Echilibrarea ventilatoarelor industriale de evacuare: Ghid complet de la teorie la practic\u0103<\/title>\n \n <meta name=\"keywords\" content=\"exhaust balancing, fan balancing, industrial ventilation, vibration analysis, field balancing, Balanset-1A, exhaust fan maintenance\">\n <style>\n\n h1 {\n color: #1e3a8a;\n border-bottom: 3px solid #3b82f6;\n padding-bottom: 10px;\n }\n h2 {\n color: #1e40af;\n border-left: 4px solid #3b82f6;\n padding-left: 15px;\n margin-top: 30px;\n }\n h3 {\n color: #1e40af;\n margin-top: 25px;\n }\n .table-container {\n overflow-x: auto;\n margin: 20px 0;\n }\n table {\n width: 100%;\n border-collapse: collapse;\n margin: 20px 0;\n background-color: white;\n }\n th {\n background-color: #1e40af;\n color: white;\n padding: 12px;\n text-align: left;\n }\n td {\n padding: 10px;\n border: 1px solid #ddd;\n }\n tr:nth-child(even) {\n background-color: #f1f5f9;\n }\n .formula {\n background-color: #eff6ff;\n padding: 15px;\n border-left: 4px solid #3b82f6;\n margin: 15px 0;\n font-family: monospace;\n text-align: center;\n }\n .warning {\n background-color: #fef3c7;\n border: 1px solid #f59e0b;\n padding: 15px;\n margin: 15px 0;\n border-radius: 5px;\n }\n .tip {\n background-color: #dcfce7;\n border: 1px solid #22c55e;\n padding: 15px;\n margin: 15px 0;\n border-radius: 5px;\n }\n ul, ol {\n margin: 15px 0;\n padding-left: 30px;\n }\n .highlight {\n background-color: #dbeafe;\n padding: 2px 4px;\n border-radius: 3px;\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"container\">\n <h1>Echilibrarea ventilatoarelor industriale de evacuare: Ghid complet de la teorie la practic\u0103<\/h1>\n\n <h2>Sec\u021biunea 1: Principiile fundamentale ale dezechilibrului - \u00cen\u021belegerea \u201eDe ce\u201d-ului<\/h2>\n \n <p>Echilibrarea maselor rotative este una dintre opera\u021biunile cheie \u00een \u00eentre\u021binerea \u0219i repararea echipamentelor industriale, fiind deosebit de important\u0103 pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii. Pentru eliminarea eficient\u0103 \u0219i informat\u0103 a problemelor legate de vibra\u021biile excesive, este necesar\u0103 o \u00een\u021belegere profund\u0103 a proceselor fizice care stau la baza dezechilibrului, a variet\u0103\u021bilor, cauzelor \u0219i consecin\u021belor distructive ale acestuia.<\/p>\n\n <h3>1.1. Fizica dezechilibrului: \u0218tiin\u021ba vibra\u021biilor<\/h3>\n \n <p>\u00centr-o lume ideal\u0103, un corp rotativ, cum ar fi rotorul unui ventilator de evacuare, ar fi perfect echilibrat. Din punct de vedere mecanic, aceasta \u00eenseamn\u0103 c\u0103 axa sa central\u0103 principal\u0103 de iner\u021bie coincide complet cu axa geometric\u0103 de rota\u021bie. Cu toate acestea, \u00een realitate, din cauza imperfec\u021biunilor de fabrica\u021bie \u0219i a factorilor opera\u021bionali, apare o condi\u021bie numit\u0103 dezechilibru, \u00een care centrul de mas\u0103 al rotorului este decalat fa\u021b\u0103 de axa sa de rota\u021bie.<\/p>\n \n <p>C\u00e2nd un astfel de rotor dezechilibrat \u00eencepe s\u0103 se roteasc\u0103, aceast\u0103 deplasare a masei genereaz\u0103 for\u021b\u0103 centrifug\u0103. Aceast\u0103 for\u021b\u0103 \u00ee\u0219i schimb\u0103 continuu direc\u021bia, ac\u021bion\u00e2nd perpendicular pe axa de rota\u021bie \u0219i transmi\u021b\u00e2ndu-se prin arbore la suporturile lag\u0103relor \u0219i apoi la \u00eentreaga structur\u0103. Aceast\u0103 for\u021b\u0103 ciclic\u0103 este cauza principal\u0103 a vibra\u021biilor.<\/p>\n \n <div class=\"formula\">\n F = m \u00d7 \u03c9\u00b2 \u00d7 r\n <\/div>\n \n <p>Unde F este for\u021ba centrifug\u0103, m este magnitudinea masei dezechilibrate, \u03c9 este viteza unghiular\u0103, iar r este distan\u021ba de la axa de rota\u021bie la masa dezechilibrat\u0103 (excentricitate).<\/p>\n \n <p>Aspectul cheie al acestei rela\u021bii este c\u0103 for\u021ba iner\u021bial\u0103 cre\u0219te propor\u021bional cu p\u0103tratul vitezei de rota\u021bie (\u03c9\u00b2). Acest lucru are o semnifica\u021bie practic\u0103 enorm\u0103 pentru <strong>echilibrarea evacuarii<\/strong> proceduri. De exemplu, dublarea vitezei ventilatorului de evacuare va cre\u0219te for\u021ba vibra\u021bional\u0103 de patru ori. Aceast\u0103 cre\u0219tere neliniar\u0103 explic\u0103 de ce un ventilator de evacuare care func\u021bioneaz\u0103 acceptabil la viteze mici poate prezenta niveluri catastrofale de vibra\u021bii atunci c\u00e2nd atinge o vitez\u0103 nominal\u0103 sau crescut\u0103, cum ar fi atunci c\u00e2nd este controlat prin convertizoare de frecven\u021b\u0103.<\/p>\n\n <h3>1.2. Clasificarea dezechilibrului: trei tipuri de probleme<\/h3>\n \n <p>Dezechilibrul rotorului, \u00een func\u021bie de aranjamentul reciproc al axei de iner\u021bie \u0219i al axei de rota\u021bie, este \u00eemp\u0103r\u021bit \u00een trei tipuri principale:<\/p>\n \n <h4>Dezechilibru static (for\u021b\u0103\/dezechilibru static)<\/h4>\n\t\t\t<div id=\"attachment_3705\" style=\"width: 760px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/\u0420\u043e\u0442\u0435\u0440_statika-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3705\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/Roter_statika-1024x549.jpg\" alt=\"Configura\u021bie de echilibrare a rotorului cu motor electric pe suporturi, senzori de vibra\u021bii, dispozitiv de m\u0103surare, laptop cu afi\u0219aj software\" width=\"750\" height=\"402\" class=\"size-large wp-image-3705\" \/><\/a><p id=\"caption-attachment-3705\" class=\"wp-caption-text\">Configura\u021bie ma\u0219in\u0103 de echilibrat rotoare cu sistem de monitorizare controlat de computer pentru m\u0103surarea for\u021belor statice \u0219i dinamice \u00een vederea detect\u0103rii dezechilibrelor \u00een componentele rotative ale motorului electric.<\/p><\/div>\n <p><strong>Defini\u0163ie:<\/strong> Apare atunci c\u00e2nd axa de iner\u021bie este deplasat\u0103 paralel cu axa de rota\u021bie. Acest lucru poate fi vizualizat ca av\u00e2nd un \u201epunct greu\u201d pe rotor.<\/p>\n <p><strong>Diagnostic:<\/strong> Acest tip de dezechilibru este unic prin faptul c\u0103 se manifest\u0103 chiar \u0219i \u00een repaus. Dac\u0103 un astfel de rotor este plasat pe suporturi orizontale cu frecare redus\u0103 (numite \u201emuchii de cu\u021bit\u201d), acesta se va roti \u00eentotdeauna sub influen\u021ba gravita\u021biei \u0219i se va opri cu v\u00e2rful greu \u00een jos.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Eliminat relativ simplu prin ad\u0103ugarea (sau eliminarea) unei mase corective \u00eentr-un plan, la 180 de grade opus punctului greu identificat. Dezechilibrul static este caracteristic rotoarelor \u00eenguste, \u00een form\u0103 de disc, cu raporturi lungime-diametru (L\/D) mici (de exemplu, mai pu\u021bin de 0,5).<\/p>\n \n <h4>Dezechilibrul cuplului<\/h4>\n\t\t\t\n <p><strong>Defini\u0163ie:<\/strong> Apare atunci c\u00e2nd axa de iner\u021bie intersecteaz\u0103 axa de rota\u021bie \u00een centrul de mas\u0103 al rotorului. Din punct de vedere fizic, acest lucru este echivalent cu a avea dou\u0103 mase egale dezechilibrate situate \u00een dou\u0103 planuri diferite de-a lungul rotorului \u0219i pozi\u021bionate la 180 de grade una fa\u021b\u0103 de cealalt\u0103.<\/p>\n <p><strong>Diagnostic:<\/strong> \u00cen pozi\u021bie static\u0103, un astfel de rotor este echilibrat \u0219i nu va tinde s\u0103 ocupe nicio pozi\u021bie specific\u0103. Cu toate acestea, \u00een timpul rota\u021biei, aceast\u0103 pereche de mase creeaz\u0103 un moment de \u201ebalansare\u201d sau \u201eoscilare\u201d care tinde s\u0103 roteasc\u0103 rotorul perpendicular pe axa de rota\u021bie, provoc\u00e2nd vibra\u021bii puternice la nivelul suporturilor.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Necesit\u0103 corec\u021bie \u00een cel pu\u021bin dou\u0103 planuri pentru a compensa acest moment.<\/p>\n \n <h4>Dezechilibru dinamic<\/h4>\n\t\t\t<div id=\"attachment_3695\" style=\"width: 760px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/long-rotor.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3695\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/long-rotor-1024x549.jpg\" alt=\"Configurarea echilibr\u0103rii rotorului cu motor electric pe suporturi de rulmen\u021bi, senzori de vibra\u021bii, cabluri \u0219i ecran de laptop pentru analizorul Vibromera\" width=\"750\" height=\"402\" class=\"size-large wp-image-3695\" \/><\/a><p id=\"caption-attachment-3695\" class=\"wp-caption-text\">Schema tehnic\u0103 a unui aparat de testare a rotorului unui motor electric cu \u00eenf\u0103\u0219ur\u0103ri de cupru montate pe rulmen\u021bi de precizie, conectat la un echipament electronic de monitorizare pentru m\u0103surarea dinamicii de rota\u021bie.<\/p><\/div>\n \u00a0 \u00a0 \u00a0 \u00a0<p><strong>Defini\u0163ie:<\/strong> Acesta este cel mai general \u0219i frecvent \u00eent\u00e2lnit caz \u00een practic\u0103, \u00een care axa de iner\u021bie nu este nici paralel\u0103, nici intersecteaz\u0103 axa de rota\u021bie, ci este oblic\u0103 \u00een spa\u021biu cu aceasta. Dezechilibrul dinamic este \u00eentotdeauna o combina\u021bie de dezechilibre statice \u0219i de cuplu.<\/p>\n <p><strong>Diagnostic:<\/strong> Se manifest\u0103 doar \u00een timpul rota\u021biei rotorului.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Necesit\u0103 \u00eentotdeauna echilibrarea \u00een cel pu\u021bin dou\u0103 plane de corec\u021bie pentru a compensa simultan at\u00e2t componentele for\u021bei, c\u00e2t \u0219i cele ale momentului.<\/p>\n\n <h3>1.3. Cauzele profunde ale problemelor: De unde provine dezechilibrul?<\/h3>\n \n <p>Cauzele dezechilibrului pot fi \u00eemp\u0103r\u021bite \u00een dou\u0103 mari grupuri, relevante \u00een special pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii:<\/p>\n \n <h4>Factori opera\u021bionali (cei mai frecven\u021bi):<\/h4>\n <ul>\n <li><strong>Acumulare de materiale:<\/strong> Cea mai frecvent\u0103 cauz\u0103 pentru func\u021bionarea ventilatoarelor de evacuare \u00een medii contaminate. Acumularea neuniform\u0103 de praf, murd\u0103rie, vopsea, produse de proces sau umezeal\u0103 pe palele rotorului modific\u0103 distribu\u021bia masei.<\/li>\n <li><strong>Uzur\u0103 \u0219i coroziune:<\/strong> Uzura abraziv\u0103 inegal\u0103 a lamelor, eroziunea pic\u0103turilor cauzat\u0103 de p\u0103trunderea lichidului sau coroziunea chimic\u0103 duc la pierderea de mas\u0103 \u00een anumite zone \u0219i la un dezechilibru consecutiv.<\/li>\n <li><strong>Deformare termic\u0103:<\/strong> \u00cenc\u0103lzirea sau r\u0103cirea neuniform\u0103 a rotorului, \u00een special \u00een timpul opririlor prelungite ale echipamentelor fierbin\u021bi, poate duce la \u00eendoirea temporar\u0103 sau permanent\u0103 a arborelui sau a rotorului.<\/li>\n <li><strong>Pierderea greut\u0103\u021bilor de echilibrare:<\/strong> Greut\u0103\u021bile corective instalate anterior se pot desprinde din cauza vibra\u021biilor, coroziunii sau impactului mecanic.<\/li>\n <\/ul>\n \n <h4>Defecte de fabrica\u021bie \u0219i asamblare:<\/h4>\n <ul>\n <li><strong>Defecte de fabrica\u021bie:<\/strong> Neuniformitatea materialului (de exemplu, porozitatea turn\u0103rii), inexactit\u0103\u021bi \u00een prelucrare sau asamblarea palelor pe rotor de calitate slab\u0103.<\/li>\n <li><strong>Erori de asamblare \u0219i instalare:<\/strong> Montare necorespunz\u0103toare a rotorului pe arbore, aliniere necorespunz\u0103toare, sl\u0103birea fix\u0103rii butucului, aliniere necorespunz\u0103toare a arborilor motorului \u0219i ventilatorului.<\/li>\n <li><strong>Probleme ale componentelor conexe:<\/strong> Utilizarea curelelor de transmisie nestandardizate sau uzate, defecte ale rulmen\u021bilor, sl\u0103birea fix\u0103rii unit\u0103\u021bii pe funda\u021bie (starea cunoscut\u0103 sub numele de \u201epicior moale\u201d).<\/li>\n <\/ul>\n\n <h3>1.4. Consecin\u021bele dezechilibrului: Reac\u021bia \u00een lan\u021b a distrugerii<\/h3>\n \n <p>Ignorarea problemelor de dezechilibru duce la o reac\u021bie \u00een lan\u021b de consecin\u021be distructive care afecteaz\u0103 at\u00e2t componentele echipamentelor mecanice, c\u00e2t \u0219i performan\u021ba economic\u0103, fiind \u00een special critic\u0103 \u00een cazul sistemelor de evacuare:<\/p>\n \n <h4>Consecin\u021be mecanice:<\/h4>\n <ul>\n <li><strong>Vibra\u021bii \u0219i zgomot:<\/strong> Cre\u0219terea brusc\u0103 a vibra\u021biilor \u0219i a zgomotului este cea mai evident\u0103 consecin\u021b\u0103, duc\u00e2nd la deteriorarea condi\u021biilor de lucru \u0219i servind ca prim semnal al unei defec\u021biuni.<\/li>\n <li><strong>Uzur\u0103 accelerat\u0103 a rulmen\u021bilor:<\/strong> Cea mai frecvent\u0103, costisitoare \u0219i periculoas\u0103 consecin\u021b\u0103. Sarcinile ciclice cauzate de for\u021ba centrifug\u0103 provoac\u0103 oboseal\u0103 accelerat\u0103 \u0219i distrugerea elementelor de rulare \u0219i a c\u0103ilor de rulare, reduc\u00e2nd durata de via\u021b\u0103 a rulmen\u021bilor de zeci de ori.<\/li>\n <li><strong>Defec\u021biune la oboseal\u0103:<\/strong> Expunerea prelungit\u0103 la vibra\u021bii duce la acumularea de oboseal\u0103 \u00een metal, put\u00e2nd cauza distrugerea arborilor, a structurilor de sus\u021binere, a sudurilor \u0219i chiar ruperea \u0219uruburilor de ancorare care fixeaz\u0103 unitatea de funda\u021bie.<\/li>\n <li><strong>Deteriorarea componentelor adiacente:<\/strong> Vibra\u021biile distrug, de asemenea, conexiunile cuplajelor, transmisiile prin curele \u0219i etan\u0219\u0103rile arborelui.<\/li>\n <\/ul>\n \n <h4>Consecin\u021be economice \u0219i opera\u021bionale:<\/h4>\n <ul>\n <li><strong>Consum crescut de energie:<\/strong> O parte semnificativ\u0103 a energiei motorului nu este cheltuit\u0103 pentru mi\u0219carea aerului, ci pentru crearea de vibra\u021bii, ceea ce duce la pierderi financiare directe.<\/li>\n <li><strong>Performan\u021b\u0103 redus\u0103:<\/strong> Vibra\u021biile pot perturba caracteristicile aerodinamice ale rotorului, duc\u00e2nd la reducerea fluxului de aer \u0219i a presiunii create de ventilatorul de evacuare.<\/li>\n <li><strong>Timp de nefunc\u021bionare \u00een caz de urgen\u021b\u0103:<\/strong> \u00cen cele din urm\u0103, dezechilibrul duce la oprirea de urgen\u021b\u0103 a echipamentelor, ceea ce duce la repara\u021bii costisitoare \u0219i pierderi cauzate de nefunc\u021bionarea liniei de produc\u021bie.<\/li>\n <li><strong>Amenin\u021b\u0103ri la adresa siguran\u021bei:<\/strong> \u00cen cazuri critice, este posibil\u0103 distrugerea rotorului la viteze mari, ceea ce reprezint\u0103 amenin\u021b\u0103ri directe la adresa vie\u021bii \u0219i s\u0103n\u0103t\u0103\u021bii personalului.<\/li>\n <\/ul>\n\n <h2>Sec\u021biunea 2: Diagnosticarea vibra\u021biilor - Arta diagnostic\u0103rii precise<\/h2>\n \n <p>Diagnosticarea corect\u0103 este piatra de temelie a unei echilibr\u0103ri reu\u0219ite. \u00cenainte de a continua corec\u021bia masei, este necesar s\u0103 se stabileasc\u0103 cu mare \u00eencredere c\u0103 dezechilibrul este \u00eentr-adev\u0103r cauza principal\u0103 a vibra\u021biilor excesive. Aceast\u0103 sec\u021biune este dedicat\u0103 metodelor instrumentale care permit nu doar detectarea problemei, ci \u0219i identificarea precis\u0103 a naturii acesteia.<\/p>\n\n <h3>2.1. De ce vibra\u021biile nu sunt \u00eentotdeauna dezechilibrate: diagnostic diferen\u021bial<\/h3>\n \n <p>Un principiu cheie pe care orice specialist \u00een \u00eentre\u021binere trebuie s\u0103 \u00eel \u00een\u021beleag\u0103: vibra\u021biile excesive sunt un simptom, nu un diagnostic. De\u0219i dezechilibrul este una dintre cele mai frecvente cauze ale vibra\u021biilor ventilatorului de evacuare, exist\u0103 \u0219i alte defecte care pot crea tipare similare, care trebuie excluse \u00eenainte de a \u00eencepe. <strong>echilibrarea evacuarii<\/strong> lucru.<\/p>\n \n <p>Principalele defecte \u201emascate\u201d \u00een dezechilibru:<\/p>\n <ul>\n <li><strong>Nealiniere:<\/strong> Nealinierea arborelui dintre motor \u0219i ventilator. \u00cen spectrul de vibra\u021bii, caracterizat\u0103 printr-un v\u00e2rf semnificativ la frecven\u021b\u0103 dubl\u0103 de func\u021bionare (2x), \u00een special \u00een direc\u021bie axial\u0103.<\/li>\n <li><strong>Sl\u0103bire mecanic\u0103:<\/strong> Sl\u0103birea \u0219uruburilor de sus\u021binere a lag\u0103relor, fisuri \u00een cadrul funda\u021biei. Se manifest\u0103 printr-o serie de armonice de frecven\u021b\u0103 de func\u021bionare (1x, 2x, 3x etc.) \u0219i, \u00een cazuri grave, subarmonice (0,5x, 1,5x).<\/li>\n <li><strong>Defecte ale rulmen\u021bilor:<\/strong> Exfoliere, fisuri pe c\u0103ile de rulare sau elementele de rulare. Genereaz\u0103 vibra\u021bii la componente caracteristice de \u00eenalt\u0103 frecven\u021b\u0103, nesincrone (nu multipli ai frecven\u021bei de rota\u021bie), calculate din geometria rulmentului.<\/li>\n <li><strong>Arbore \u00eendoit:<\/strong> Creeaz\u0103 vibra\u021bii at\u00e2t la frecven\u021bele de func\u021bionare (1x), c\u00e2t \u0219i la cele de func\u021bionare dubl\u0103 (2x), ceea ce complic\u0103 foarte mult diagnosticarea \u0219i necesit\u0103 aplicarea obligatorie a analizei de faz\u0103 pentru a distinge \u00eentre dezechilibru \u0219i nealiniere.<\/li>\n <li><strong>Rezonan\u0163\u0103:<\/strong> Amplificare brusc\u0103 \u0219i multipl\u0103 a vibra\u021biilor atunci c\u00e2nd frecven\u021ba de rota\u021bie \u00een func\u021bionare coincide cu una dintre frecven\u021bele naturale ale structurii. Aceast\u0103 condi\u021bie extrem de periculoas\u0103 nu este eliminat\u0103 prin echilibrare.<\/li>\n <\/ul>\n\n <h3>2.2. Trusa de instrumente a specialistului: Ochii \u0219i urechile inginerului<\/h3>\n \n <p>Diagnosticare precis\u0103 a vibra\u021biilor \u0219i opera\u021biuni ulterioare <strong>echilibrarea evacuarii<\/strong> necesit\u0103 echipamente specializate:<\/p>\n \n <ul>\n <li><strong>Senzori de vibra\u021bii (accelerometre):<\/strong> Mijloace primare de colectare a datelor. Pentru o imagine tridimensional\u0103 complet\u0103 a vibra\u021biilor ma\u0219inii, senzorii sunt instala\u021bi pe carcasele rulmen\u021bilor \u00een trei direc\u021bii perpendiculare reciproc: orizontal\u0103, vertical\u0103 \u0219i axial\u0103.<\/li>\n <li><strong>Analizoare\/echilibratoare de vibra\u021bii portabile:<\/strong> Instrumente moderne precum <strong>Balanset-1A<\/strong> Combin\u0103 func\u021bii de vibrometru (m\u0103surarea nivelului general al vibra\u021biilor), analizor de spectru cu transformat\u0103 Fourier rapid\u0103 (FFT), contor de faz\u0103 \u0219i calculator de echilibrare. Acestea permit diagnosticarea complet\u0103 \u0219i echilibrarea direct la locul de operare al echipamentului.<\/li>\n <li><strong>Tahometru (optic sau laser):<\/strong> Parte integrant\u0103 a oric\u0103rui kit de echilibrare. Necesar pentru m\u0103surarea precis\u0103 a vitezei de rota\u021bie \u0219i sincronizarea m\u0103sur\u0103rii fazei. Pentru func\u021bionare, o mic\u0103 bucat\u0103 de band\u0103 reflectorizant\u0103 se aplic\u0103 pe ax sau pe alt\u0103 pies\u0103 rotativ\u0103.<\/li>\n <li><strong>Software:<\/strong> Software-ul specializat permite gestionarea bazelor de date ale echipamentelor, analizarea tendin\u021belor vibra\u021biilor \u00een timp, efectuarea de diagnostice aprofundate ale spectrului \u0219i generarea automat\u0103 a rapoartelor de lucru.<\/li>\n <\/ul>\n\n <h3>2.3. Citirea spectrelor de vibra\u021bii (analiza FFT): Descifrarea semnalelor ma\u0219inii<\/h3>\n \n <p>Semnalul de vibra\u021bie m\u0103surat de accelerometru reprezint\u0103 o dependen\u021b\u0103 complex\u0103 de amplitudine-timp. Pentru diagnosticare, un astfel de semnal este pu\u021bin informativ. Metoda cheie de analiz\u0103 este Transformata Fourier rapid\u0103 (FFT), care descompune matematic semnalul temporal complex \u00een spectrul s\u0103u de frecven\u021b\u0103. Spectrul arat\u0103 exact ce frecven\u021be con\u021bin energie de vibra\u021bie, permi\u021b\u00e2nd identificarea acestor surse de vibra\u021bii.<\/p>\n \n <p>Indicatorul cheie al dezechilibrului \u00een spectrul vibra\u021biilor este prezen\u021ba unui v\u00e2rf dominant la o frecven\u021b\u0103 exact egal\u0103 cu frecven\u021ba de rota\u021bie a rotorului. Aceast\u0103 frecven\u021b\u0103 este desemnat\u0103 ca 1x. Amplitudinea (\u00een\u0103l\u021bimea) acestui v\u00e2rf este direct propor\u021bional\u0103 cu magnitudinea dezechilibrului.<\/p>\n\n <div class=\"table-container\">\n <table>\n <thead>\n <tr>\n <th>Defect<\/th>\n <th>Frecven\u021be caracteristice \u00een spectru<\/th>\n <th>Caracteristici de m\u0103surare a fazei<\/th>\n <th>Ac\u021biuni recomandate<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Dezechilibru static<\/td>\n <td>V\u00e2rf dominant 1x \u00een direc\u021bii radiale (orizontal\u0103, vertical\u0103)<\/td>\n <td>Faz\u0103 stabil\u0103. Diferen\u021b\u0103 de faz\u0103 \u00eentre suporturi \u00een aceea\u0219i direc\u021bie ~0\u00b0 (\u00b130\u00b0)<\/td>\n <td>Cur\u0103\u021ba\u021bi rotorul. Efectua\u021bi echilibrarea pe un singur plan<\/td>\n <\/tr>\n <tr>\n <td>Dezechilibru de cuplu\/dinamic<\/td>\n <td>V\u00e2rf dominant 1x \u00een direc\u021bii radiale \u0219i adesea axiale<\/td>\n <td>Faz\u0103 stabil\u0103. Diferen\u021b\u0103 de faz\u0103 \u00eentre suporturi \u00een aceea\u0219i direc\u021bie ~180\u00b0 (\u00b130\u00b0)<\/td>\n <td>Verifica\u021bi deformarea (\u201efigura opt\u201d). Efectua\u021bi echilibrarea pe dou\u0103 planuri<\/td>\n <\/tr>\n <tr>\n <td>Nealiniere<\/td>\n <td>V\u00e2rf ridicat de 2x, adesea \u00eenso\u021bit de 1x \u0219i 3x. Se observ\u0103 mai ales \u00een direc\u021bie axial\u0103.<\/td>\n <td>Diferen\u021b\u0103 de faz\u0103 ~180\u00b0 \u00een direc\u021bie axial\u0103 pe cuplaj<\/td>\n <td>Efectua\u021bi alinierea cu laser a arborilor motorului \u0219i ventilatorului<\/td>\n <\/tr>\n <tr>\n <td>Sl\u0103bire mecanic\u0103<\/td>\n <td>Serie de armonice 1x, 2x, 3x... Adesea sunt prezente subarmonice (0,5x, 1,5x)<\/td>\n <td>Faz\u0103 instabil\u0103, \u201es\u0103ritoare\u201d<\/td>\n <td>Str\u00e2nge\u021bi toate conexiunile cu \u0219uruburi (suporturi, funda\u021bie). Verifica\u021bi dac\u0103 exist\u0103 fisuri.<\/td>\n <\/tr>\n <tr>\n <td>Defect al rulmentului<\/td>\n <td>V\u00e2rfuri nesincrone de \u00eenalt\u0103 frecven\u021b\u0103 la frecven\u021bele caracteristice ale defectelor<\/td>\n <td>-<\/td>\n <td>Verifica\u021bi lubrifierea. \u00cenlocui\u021bi rulmentul.<\/td>\n <\/tr>\n <tr>\n <td>Rezonan\u0163\u0103<\/td>\n <td>V\u00e2rf extrem de ridicat la frecven\u021ba de func\u021bionare care coincide cu frecven\u021ba natural\u0103<\/td>\n <td>Faza se schimb\u0103 brusc cu 180\u00b0 la trecerea prin frecven\u021ba de rezonan\u021b\u0103<\/td>\n <td>Modifica\u021bi viteza de operare sau rigiditatea structural\u0103. Echilibrarea este ineficient\u0103<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>2.4. Rolul cheie al analizei de faz\u0103: confirmarea diagnosticului<\/h3>\n \n <p>Analiza fazelor este un instrument puternic care permite confirmarea definitiv\u0103 a diagnosticului de \u201edezechilibru\u201d \u0219i distingerea acestuia de alte defecte care se manifest\u0103, de asemenea, la frecven\u021ba de func\u021bionare 1x.<\/p>\n \n <p>Faza este, \u00een esen\u021b\u0103, rela\u021bia de timp dintre dou\u0103 semnale de vibra\u021bie de frecven\u021b\u0103 identic\u0103, m\u0103surat\u0103 \u00een grade. Aceasta arat\u0103 cum se mi\u0219c\u0103 diferite puncte ale ma\u0219inii unul fa\u021b\u0103 de cel\u0103lalt \u0219i fa\u021b\u0103 de marcajul reflectorizant de pe arbore.<\/p>\n \n <h4>Determinarea tipului de dezechilibru \u00een func\u021bie de faz\u0103:<\/h4>\n <ul>\n <li><strong>Dezechilibru static:<\/strong> Ambele suporturi ale rulmen\u021bilor se mi\u0219c\u0103 sincron, \u201e\u00een faz\u0103\u201d. Prin urmare, diferen\u021ba de unghi de faz\u0103 m\u0103surat\u0103 la dou\u0103 suporturi \u00een aceea\u0219i direc\u021bie radial\u0103 va fi apropiat\u0103 de 0\u00b0 (\u00b130\u00b0).<\/li>\n <li><strong>Dezechilibru de cuplu sau dinamic:<\/strong> Suporturile efectueaz\u0103 o mi\u0219care oscilatorie \u201e\u00een antifaz\u0103\u201d. \u00cen mod corespunz\u0103tor, diferen\u021ba de faz\u0103 dintre ele va fi aproape de 180\u00b0 (\u00b130\u00b0).<\/li>\n <\/ul>\n \n <div class=\"warning\">\n <strong>Important:<\/strong> Stabilitatea unghiului de faz\u0103 \u00een sine este un criteriu crucial de diagnostic. \u00cenainte de a \u00eencepe echilibrarea, trebuie efectuate 2-3 porniri de control pentru a se asigura c\u0103 citirile de amplitudine \u0219i faz\u0103 sunt repetabile (de exemplu, faza nu deviaz\u0103 mai mult de 10-15\u00b0). Dac\u0103 faza \u201eplute\u0219te\u201d haotic sau se modific\u0103 semnificativ \u00een timpul pornirilor repetate, acesta este un \u201esemnal de alarm\u0103\u201d care indic\u0103 prezen\u021ba unei probleme mai complexe dec\u00e2t un simplu dezechilibru.\n <\/div>\n\n\t\t\t\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" 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https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Baza magnetic\u0103.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Band\u0103 reflectorizant\u0103\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic "Balanset-1A" OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic "Balanset-1A" OEM\">Echilibrator dinamic \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas 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class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n\t\t\t\n <h2>Sec\u021biunea 3: Ghid practic de echilibrare - Metode pas cu pas \u0219i sfaturi profesionale<\/h2>\n \n <p>Aceast\u0103 sec\u021biune prezint\u0103 \u00eendrum\u0103ri detaliate, pas cu pas, pentru efectuarea <strong>echilibrarea evacuarii<\/strong> munc\u0103, de la opera\u021biuni preg\u0103titoare p\u00e2n\u0103 la tehnici specializate pentru diferite tipuri de ventilatoare de evacuare.<\/p>\n\n <h3>3.1. Etapa preg\u0103titoare - 50% de succes<\/h3>\n \n <p>Preg\u0103tirea de calitate este cheia succesului \u0219i siguran\u021bei <strong>echilibrarea evacuarii<\/strong>Neglijarea acestei etape duce adesea la rezultate incorecte \u0219i pierdere de timp.<\/p>\n \n <h4>Siguran\u021ba \u00eenainte de toate:<\/h4>\n <p>\u00cenainte de \u00eenceperea oric\u0103rei lucr\u0103ri, echipamentul trebuie complet scos de sub tensiune. Se aplic\u0103 proceduri standard de blocare\/etichetare (LOTO) pentru a preveni pornirea accidental\u0103. Trebuie verificat\u0103 absen\u021ba tensiunii la bornele motorului.<\/p>\n \n <h4>Cur\u0103\u021bare \u0219i inspec\u021bie vizual\u0103:<\/h4>\n <p>Aceasta nu este o opera\u021biune preliminar\u0103, ci primar\u0103. Rotorul trebuie cur\u0103\u021bat temeinic de orice acumul\u0103ri - murd\u0103rie, praf, produs. \u00cen multe cazuri, o cur\u0103\u021bare de calitate elimin\u0103 complet sau reduce semnificativ dezechilibrul, f\u0103c\u00e2nd inutil\u0103 o echilibrare ulterioar\u0103. Dup\u0103 cur\u0103\u021bare, se efectueaz\u0103 o inspec\u021bie vizual\u0103 atent\u0103 a paletelor, discurilor \u0219i sudurilor pentru a depista fisuri, ad\u00e2ncituri, deform\u0103ri \u0219i semne de uzur\u0103.<\/p>\n \n <h4>Verificare mecanic\u0103 (\u201eIerarhia interven\u021biilor\u201d):<\/h4>\n <p>\u00cenainte de corectarea distribu\u021biei masei, trebuie verificat\u0103 rezisten\u021ba mecanic\u0103 a \u00eentregului ansamblu:<\/p>\n <ul>\n <li><strong>Str\u00e2ngerea conexiunii cu \u0219uruburi:<\/strong> Verifica\u021bi \u0219i, dac\u0103 este necesar, str\u00e2nge\u021bi \u0219uruburile care fixeaz\u0103 rotorul de butuc, butucul de arbore, carcasele lag\u0103relor de cadru \u0219i \u0219uruburile de ancorare ale cadrului de funda\u021bie.<\/li>\n <li><strong>Verificare geometric\u0103:<\/strong> Folosind comparatoare cu cadran, verifica\u021bi b\u0103taia radial\u0103 \u0219i axial\u0103 a arborelui \u0219i a rotorului. De asemenea, verifica\u021bi vizual sau folosind \u0219abloane \u0219i instrumente de m\u0103surare alinierea palelor \u0219i uniformitatea unghiului de atac al acestora.<\/li>\n <\/ul>\n\n <h3>3.2. Echilibrare static\u0103: Metode simple pentru cazuri simple<\/h3>\n \n <p>Echilibrarea static\u0103 se aplic\u0103 rotoarelor \u00eenguste, \u00een form\u0103 de disc (de exemplu, rotoarelor cu raport L\/D mic) atunci c\u00e2nd echilibrarea dinamic\u0103 este imposibil\u0103 din punct de vedere tehnic sau impracticabil\u0103 din punct de vedere economic.<\/p>\n \n <h4>Metoda cu muchie de cu\u021bit:<\/h4>\n <p>Metod\u0103 clasic\u0103 \u0219i foarte precis\u0103. Rotorul (scos din unitate) este plasat pe dou\u0103 prisme perfect orizontale, paralele \u0219i netede sau pe dou\u0103 suporturi cu frecare redus\u0103. Sub ac\u021biunea gravita\u021biei, \u201epunctul greu\u201d al rotorului va tinde \u00eentotdeauna s\u0103 ocupe pozi\u021bia inferioar\u0103. Greutatea corectiv\u0103 este instalat\u0103 strict opus (la 180\u00b0) acestui punct. Procesul se repet\u0103 p\u00e2n\u0103 c\u00e2nd rotorul r\u0103m\u00e2ne \u00een echilibru neutru \u00een orice pozi\u021bie.<\/p>\n \n <h4>Metoda de rota\u021bie liber\u0103 (\u201elinie vertical\u0103\u201d):<\/h4>\n <p>Metod\u0103 simplificat\u0103 aplicabil\u0103 ventilatoarelor cu pale direct montate. Dup\u0103 scoaterea curelelor de transmisie (dac\u0103 exist\u0103), rotorul este rotit lent \u0219i eliberat. Paleta cea mai grea va c\u0103dea \u00een jos. Corec\u021bia se face prin ad\u0103ugarea de greut\u0103\u021bi mici (de exemplu, folosind band\u0103 adeziv\u0103 sau magne\u021bi) la cele mai u\u0219oare palete p\u00e2n\u0103 c\u00e2nd rotorul nu mai caut\u0103 nicio pozi\u021bie specific\u0103.<\/p>\n\n <h3>3.3. Echilibrarea dinamic\u0103 a c\u00e2mpului: abordare profesional\u0103<\/h3>\n \n <p>Aceasta este metoda principal\u0103 pentru industrie <strong>echilibrarea evacuarii<\/strong>, efectuat\u0103 cu ajutorul unor instrumente specializate, cum ar fi <strong>Balanset-1A<\/strong> f\u0103r\u0103 dezasamblarea echipamentului. Procesul const\u0103 \u00een mai mul\u021bi pa\u0219i obligatorii.<\/p>\n \n <h4>Pasul 1: M\u0103surarea ini\u021bial\u0103 (Rularea ini\u021bial\u0103)<\/h4>\n <ul>\n <li>Senzorii de vibra\u021bii sunt instala\u021bi pe carcasele rulmen\u021bilor, iar pe arbore este aplicat\u0103 o band\u0103 reflectorizant\u0103 pentru tahometru.<\/li>\n <li>Ventilatorul de evacuare este pornit \u0219i adus la tura\u021bia nominal\u0103 de func\u021bionare.<\/li>\n <li>Folosind un analizor de vibra\u021bii, se \u00eenregistreaz\u0103 datele ini\u021biale: amplitudinea (de obicei \u00een mm\/s) \u0219i unghiul de faz\u0103 (\u00een grade) ale vibra\u021biei la frecven\u021ba de func\u021bionare 1x. Aceste date reprezint\u0103 vectorul de dezechilibru ini\u021bial.<\/li>\n <\/ul>\n \n <h4>Pasul 2: Curs\u0103 de prob\u0103 cu greutatea<\/h4>\n <p><strong>Logic\u0103:<\/strong> Pentru ca instrumentul s\u0103 calculeze exact cum s\u0103 corecteze dezechilibrul, este necesar s\u0103 introduc\u0103 o modificare cunoscut\u0103 \u00een sistem \u0219i s\u0103 observe reac\u021bia acestuia. Acesta este scopul instal\u0103rii greut\u0103\u021bii de prob\u0103.<\/p>\n \n <ul>\n <li><strong>Selectarea masei \u0219i a loca\u021biei:<\/strong> Greutatea de prob\u0103 este aleas\u0103 astfel \u00eenc\u00e2t s\u0103 provoace o modificare vizibil\u0103, dar sigur\u0103, a vectorului de vibra\u021bie (de exemplu, modificarea amplitudinii de 20-30% \u0219i\/sau defazajul de 20-30\u00b0). Greutatea este ata\u0219at\u0103 temporar \u00een planul de corec\u021bie selectat, la o pozi\u021bie unghiular\u0103 cunoscut\u0103.<\/li>\n <li><strong>M\u0103surare:<\/strong> Repeta\u021bi pornirea \u0219i efectuarea m\u0103sur\u0103torilor, \u00eenregistr\u00e2nd noile valori ale amplitudinii \u0219i fazei.<\/li>\n <\/ul>\n \n <h4>Pasul 3: Calculul greut\u0103\u021bii corective \u0219i instalare<\/h4>\n <p>Instrumente moderne de echilibrare, cum ar fi <strong>Balanset-1A<\/strong> Efectueaz\u0103 automat sc\u0103derea vectorial\u0103 a vectorului de vibra\u021bie ini\u021bial din vectorul ob\u021binut cu greutatea de prob\u0103. Pe baza acestei diferen\u021be (vector de influen\u021b\u0103), instrumentul calculeaz\u0103 masa precis\u0103 \u0219i unghiul precis la care trebuie instalat\u0103 greutatea corectiv\u0103 permanent\u0103 pentru a compensa dezechilibrul ini\u021bial.<\/p>\n \n <p>Corec\u021bia se poate face fie prin ad\u0103ugarea de mas\u0103 (sudarea pl\u0103cilor metalice, instalarea \u0219uruburilor cu piuli\u021be), fie prin \u00eendep\u0103rtarea masei (g\u0103urirea, \u0219lefuirea). Ad\u0103ugarea de mas\u0103 este preferabil\u0103, deoarece este un proces reversibil \u0219i mai controlat.<\/p>\n \n <h4>Pasul 4: Verificare rulare \u0219i echilibrare ajustare<\/h4>\n <ul>\n <li>Dup\u0103 instalarea greut\u0103\u021bii corective permanente (\u0219i \u00eendep\u0103rtarea greut\u0103\u021bii de prob\u0103), se efectueaz\u0103 o verificare pentru a evalua rezultatul.<\/li>\n <li>Dac\u0103 nivelul vibra\u021biilor a sc\u0103zut, dar dep\u0103\u0219e\u0219te \u00een continuare standardele acceptabile, se efectueaz\u0103 echilibrarea. Procedura se repet\u0103, dar rezultatele verific\u0103rii sunt acum utilizate ca date ini\u021biale. Acest lucru permite o abordare iterativ\u0103, pas cu pas, a calit\u0103\u021bii echilibr\u0103rii necesare.<\/li>\n <\/ul>\n\n <h3>3.4. Echilibrare pe un singur plan sau pe dou\u0103 planuri? Criterii practice de selec\u021bie<\/h3>\n \n <p>Alegerea \u00eentre echilibrarea pe un singur plan \u0219i pe dou\u0103 planuri este o decizie cheie care afecteaz\u0103 succesul \u00eentregii proceduri, fiind deosebit de important\u0103 pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii.<\/p>\n \n <h4>Criteriu principal: Raportul dintre lungimea rotorului (L) \u0219i diametrul (D).<\/h4>\n <ul>\n <li>Dac\u0103 L\/D < 0,5 \u0219i o vitez\u0103 de rota\u021bie mai mic\u0103 de 1000 RPM, de obicei domin\u0103 dezechilibrul static, fiind suficient\u0103 echilibrarea pe un singur plan.<\/li>\n <li>Dac\u0103 L\/D > 0,5 sau viteza de rota\u021bie este mare (>1000 RPM), dezechilibrul cuplului \u00eencepe s\u0103 joace un rol semnificativ, necesit\u00e2nd o echilibrare pe dou\u0103 planuri pentru eliminare.<\/li>\n <\/ul>\n \n <div class=\"tip\">\n <strong>Sfat practic:<\/strong> Dac\u0103 \u00een timpul echilibr\u0103rii pe un singur plan observa\u021bi o sc\u0103dere a vibra\u021biilor la un suport (unde se efectueaz\u0103 corec\u021bia), dar o cre\u0219tere semnificativ\u0103 la suportul opus, acesta este un semn clar al unei componente puternice de dezechilibru al cuplului. \u00cen acest caz, opri\u021bi imediat \u00eencerc\u0103rile de corec\u021bie pe un singur plan \u0219i trece\u021bi la echilibrarea pe dou\u0103 planuri.\n <\/div>\n\n <h3>3.5. Particularit\u0103\u021bi ale echilibr\u0103rii ventilatorului suspendat \u00een consol\u0103<\/h3>\n \n <p>Ventilatoarele de evacuare de tip suspendat, \u00een care roata de lucru (rotorul) este amplasat\u0103 dincolo de suporturile lag\u0103relor, prezint\u0103 o complexitate deosebit\u0103 pentru echilibrare.<\/p>\n \n <p><strong>Problem\u0103:<\/strong> Astfel de sisteme sunt inerent instabile dinamic \u0219i extrem de sensibile la dezechilibru, \u00een special la cele de tip cuplu. Acest lucru se manifest\u0103 adesea prin vibra\u021bii axiale anormal de mari.<\/p>\n \n <p><strong>Complica\u021bii:<\/strong> Aplicarea metodelor standard pe dou\u0103 planuri la rotoarele suspendate duce adesea la rezultate nesatisf\u0103c\u0103toare sau necesit\u0103 instalarea unor greut\u0103\u021bi corective insuficient de mari. Reac\u021bia sistemului la greutatea de prob\u0103 poate fi neintuitiv\u0103: de exemplu, instalarea greut\u0103\u021bii pe rotor poate provoca o modificare mai mare a vibra\u021biilor la suportul \u00eendep\u0103rtat (la motor) dec\u00e2t la cel apropiat.<\/p>\n \n <p><strong>Recomand\u0103ri:<\/strong> Echilibrarea ventilatorului de evacuare suspendat necesit\u0103 o experien\u021b\u0103 specializat\u0103 mai vast\u0103 \u0219i o \u00een\u021belegere mai bun\u0103 a dinamicii. Adesea este necesar\u0103 utilizarea de module software specializate \u00een analizoarele de vibra\u021bii care aplic\u0103 metoda de separare a for\u021bei statice\/de cuplu pentru un calcul mai precis al masei corective.<\/p>\n\n <h2>Sec\u021biunea 4: Cazuri complexe \u0219i tehnici profesionale<\/h2>\n \n <p>Chiar \u0219i cu respectarea strict\u0103 a procedurilor, speciali\u0219tii pot \u00eent\u00e2lni situa\u021bii \u00een care abord\u0103rile standard nu dau rezultate. Aceste cazuri necesit\u0103 o analiz\u0103 mai profund\u0103 \u0219i aplicarea unor tehnici non-standard.<\/p>\n\n <h3>4.1. Gre\u0219eli tipice \u0219i cum s\u0103 le evi\u021bi<\/h3>\n \n <h4>Gre\u0219eala 1: Diagnostic incorect<\/h4>\n <p>Cea mai frecvent\u0103 \u0219i costisitoare gre\u0219eal\u0103 - \u00eencercarea de a echilibra vibra\u021biile cauzate de nealiniere, sl\u0103bire mecanic\u0103 sau rezonan\u021b\u0103.<\/p>\n <p><strong>Solu\u021bie:<\/strong> \u00cencepe\u021bi \u00eentotdeauna cu o analiz\u0103 complet\u0103 a vibra\u021biilor (analiza spectrului \u0219i a fazei). Dac\u0103 spectrul nu prezint\u0103 o dominan\u021b\u0103 clar\u0103 a v\u00e2rfurilor 1x, dar sunt prezente v\u00e2rfuri semnificative la alte frecven\u021be, echilibrarea nu poate \u00eencepe p\u00e2n\u0103 la eliminarea cauzei principale.<\/p>\n \n <h4>Gre\u0219eala 2: Ignorarea etapei preg\u0103titoare<\/h4>\n <p>Omiterea etapelor de cur\u0103\u021bare a rotorului sau de verificare a str\u00e2ngerii conexiunilor cu \u0219uruburi.<\/p>\n <p><strong>Solu\u021bie:<\/strong> Respecta\u021bi cu stricte\u021be \u201eierarhia interven\u021biilor\u201d descris\u0103 \u00een sec\u021biunea 3.1. Cur\u0103\u021barea \u0219i str\u00e2ngerea nu sunt op\u021biuni, ci primi pa\u0219i obligatorii.<\/p>\n \n <h4>Gre\u0219eala 3: \u00cendep\u0103rtarea tuturor greut\u0103\u021bilor vechi de echilibrare<\/h4>\n <p>Aceast\u0103 ac\u021biune distruge rezultatele echilibr\u0103rii anterioare (posibil din fabric\u0103) \u0219i adesea complic\u0103 semnificativ lucrarea, deoarece dezechilibrul ini\u021bial poate deveni foarte mare.<\/p>\n <p><strong>Solu\u021bie:<\/strong> Nu \u00eendep\u0103rta\u021bi niciodat\u0103 toate greut\u0103\u021bile f\u0103r\u0103 un motiv \u00eentemeiat. Dac\u0103 rotorul a acumulat multe greut\u0103\u021bi mici din echilibr\u0103rile anterioare, acestea pot fi \u00eendep\u0103rtate, dar apoi combina\u021bi suma vectorial\u0103 a acestora \u00eentr-o singur\u0103 greutate echivalent\u0103 \u0219i instala\u021bi-o la locul ei.<\/p>\n \n <h4>Gre\u0219eala 4: Neverificarea repetabilit\u0103\u021bii datelor<\/h4>\n <p>\u00cenceperea echilibr\u0103rii cu citiri ini\u021biale instabile ale amplitudinii \u0219i fazei.<\/p>\n <p><strong>Solu\u021bie:<\/strong> \u00cenainte de instalarea greut\u0103\u021bii de prob\u0103, efectua\u021bi 2-3 porniri de control. Dac\u0103 amplitudinea sau faza \u201eplute\u0219te\u201d de la \u00eenceput la \u00eenceput, aceasta indic\u0103 prezen\u021ba unei probleme mai complexe (rezonan\u021b\u0103, curbur\u0103 termic\u0103, instabilitate aerodinamic\u0103). Echilibrarea \u00een astfel de condi\u021bii nu va da un rezultat stabil.<\/p>\n\n <h3>4.2. Echilibrarea \u00een apropierea rezonan\u021bei: c\u00e2nd exist\u0103 faz\u0103<\/h3>\n \n <p><strong>Problem\u0103:<\/strong> C\u00e2nd viteza de func\u021bionare a ventilatorului de evacuare este foarte apropiat\u0103 de una dintre frecven\u021bele naturale de vibra\u021bie ale sistemului (rezonan\u021b\u0103), unghiul de faz\u0103 devine extrem de instabil \u0219i foarte sensibil la cele mai mici fluctua\u021bii de vitez\u0103. Acest lucru face ca calculele vectoriale standard bazate pe m\u0103surarea fazei s\u0103 fie inexacte sau complet imposibile.<\/p>\n \n <p><strong>Solu\u021bie: Metoda cu patru runde<\/strong><\/p>\n <p><strong>Esen\u0163\u0103:<\/strong> Aceast\u0103 metod\u0103 unic\u0103 de echilibrare nu utilizeaz\u0103 m\u0103sur\u0103tori de faz\u0103. Calculul corectiv al greut\u0103\u021bii se efectueaz\u0103 exclusiv pe baza modific\u0103rilor amplitudinii vibra\u021biilor.<\/p>\n \n <p><strong>Proces:<\/strong> Metoda necesit\u0103 patru rul\u0103ri secven\u021biale:<\/p>\n <ol>\n <li>M\u0103sura\u021bi amplitudinea ini\u021bial\u0103 a vibra\u021biei<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu greutatea de prob\u0103 instalat\u0103 \u00een pozi\u021bia condi\u021bionat\u0103 de 0\u00b0<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu aceea\u0219i greutate mutat\u0103 la 120\u00b0<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu aceea\u0219i greutate mutat\u0103 la 240\u00b0<\/li>\n <\/ol>\n \n <p>Pe baza celor patru valori ale amplitudinii ob\u021binute, se construie\u0219te solu\u021bia grafic\u0103 (metoda intersec\u021biei cercurilor) sau se efectueaz\u0103 un calcul matematic, permi\u021b\u00e2nd determinarea masei necesare \u0219i a unghiului de instalare a greut\u0103\u021bii corective.<\/p>\n\n <h3>4.3. C\u00e2nd problema nu este echilibru: for\u021be structurale \u0219i aerodinamice<\/h3>\n \n <h4>Probleme structurale:<\/h4>\n <p>Funda\u021biile slabe sau cr\u0103pate, suporturile sl\u0103bite pot rezona cu frecven\u021ba de func\u021bionare a ventilatorului de evacuare, multiplic\u00e2nd vibra\u021biile de nenum\u0103rate ori.<\/p>\n <p><strong>Diagnostic:<\/strong> Pentru a determina frecven\u021bele naturale structurale \u00een stare inactiv\u0103, se aplic\u0103 testul de impact (testul de lovire). Acesta se efectueaz\u0103 folosind un ciocan modal special \u0219i un accelerometru. Dac\u0103 una dintre frecven\u021bele naturale g\u0103site este apropiat\u0103 de frecven\u021ba de rota\u021bie de func\u021bionare, problema este \u00eentr-adev\u0103r rezonan\u021ba.<\/p>\n \n <h4>For\u021be aerodinamice:<\/h4>\n <p>Turbulen\u021bele fluxului de aer la intrare (datorit\u0103 obstacolelor sau clapetei excesiv \u00eenchise, a\u0219a-numita \u201e\u00eenfometare a ventilatorului\u201d) sau la ie\u0219ire pot provoca vibra\u021bii de joas\u0103 frecven\u021b\u0103, adesea instabile, care nu au leg\u0103tur\u0103 cu dezechilibrul de mas\u0103.<\/p>\n <p><strong>Diagnostic:<\/strong> Se efectueaz\u0103 un test cu modificarea sarcinii aerodinamice la o vitez\u0103 de rota\u021bie constant\u0103 (de exemplu, prin deschiderea\/\u00eenchiderea treptat\u0103 a amortizorului). Dac\u0103 nivelul vibra\u021biilor se modific\u0103 semnificativ, natura acestora este probabil aerodinamic\u0103.<\/p>\n\n <h3>4.4. Analiza unui exemplu real (studii de caz)<\/h3>\n \n <h4>Exemplul 1 (Rezonan\u021b\u0103):<\/h4>\n <p>\u00centr-un caz documentat, echilibrarea ventilatorului de alimentare folosind metoda standard nu a dat rezultate din cauza citirilor de faz\u0103 extrem de instabile. Analiza a ar\u0103tat c\u0103 viteza de func\u021bionare (29 Hz) a fost foarte apropiat\u0103 de frecven\u021ba natural\u0103 a rotorului (28 Hz). Aplicarea metodei cu patru runde, independent\u0103 de faz\u0103, a permis reducerea cu succes a vibra\u021biilor la un nivel acceptabil, oferind o solu\u021bie temporar\u0103 p\u00e2n\u0103 la \u00eenlocuirea ventilatorului cu unul mai fiabil.<\/p>\n \n <h4>Exemplul 2 (Defecte multiple):<\/h4>\n <p>Analiza vibra\u021biilor ventilatoarelor de evacuare de la fabrica de zah\u0103r a relevat probleme complexe. Un spectru al ventilatorului a indicat o nealiniere unghiular\u0103 (v\u00e2rfuri mari de 1x \u0219i 2x \u00een direc\u021bie axial\u0103), \u00een timp ce altul a ar\u0103tat sl\u0103bire mecanic\u0103 (armonice uniforme 1x, 2x, 3x). Acest lucru demonstreaz\u0103 importan\u021ba elimin\u0103rii secven\u021biale a defectelor: mai \u00eent\u00e2i s-au efectuat alinierea \u0219i str\u00e2ngerea elementelor de fixare, iar abia apoi, dac\u0103 este necesar, s-a efectuat echilibrarea.<\/p>\n\n <h2>Sec\u021biunea 5: Standarde, toleran\u021be \u0219i \u00eentre\u021binere preventiv\u0103<\/h2>\n \n <p>Etapa final\u0103 a oric\u0103rei lucr\u0103ri tehnice este evaluarea calit\u0103\u021bii acesteia \u00een conformitate cu cerin\u021bele de reglementare \u0219i dezvoltarea unei strategii pentru men\u021binerea echipamentelor \u00een stare corespunz\u0103toare pe termen lung.<\/p>\n\n <h3>5.1. Prezentare general\u0103 a standardelor cheie (ISO)<\/h3>\n \n <p>Mai multe standarde interna\u021bionale sunt utilizate pentru evaluarea calit\u0103\u021bii echilibr\u0103rii \u0219i a st\u0103rii de vibra\u021bii a ventilatoarelor de evacuare.<\/p>\n \n <h4>ISO 14694:2003:<\/h4>\n <p>Standardul principal pentru ventilatoarele industriale. Stabile\u0219te cerin\u021be pentru calitatea echilibr\u0103rii \u0219i nivelurile maxime admise de vibra\u021bii \u00een func\u021bie de categoria de aplica\u021bie a ventilatorului (BV-1, BV-2, BV-3 etc.), putere \u0219i tipul de instalare.<\/p>\n \n <h4>ISO 1940-1:2003:<\/h4>\n <p>Acest standard define\u0219te gradele de calitate a echilibr\u0103rii (G) pentru rotoarele rigide. Gradul de calitate caracterizeaz\u0103 dezechilibrul rezidual admis. Pentru majoritatea ventilatoarelor industriale de evacuare, se aplic\u0103 urm\u0103toarele grade:<\/p>\n <ul>\n <li><strong>G6.3:<\/strong> Calitate industrial\u0103 standard, potrivit\u0103 pentru majoritatea aplica\u021biilor industriale generale.<\/li>\n <li><strong>G2.5:<\/strong> Calitate \u00eembun\u0103t\u0103\u021bit\u0103, necesar\u0103 pentru ventilatoarele de evacuare de mare vitez\u0103 sau deosebit de critice, unde cerin\u021bele privind vibra\u021biile sunt mai stricte.<\/li>\n <\/ul>\n \n <h4>ISO 10816-3:2009:<\/h4>\n <p>Regleaz\u0103 evaluarea st\u0103rii de vibra\u021bii a ma\u0219inilor industriale pe baza m\u0103sur\u0103torilor efectuate pe piesele nerotative (de exemplu, carcasele rulmen\u021bilor). Standardul introduce patru zone de condi\u021bie:<\/p>\n <ul>\n <li><strong>Zona A:<\/strong> \u201eBun\u201d (echipament nou)<\/li>\n <li><strong>Zona B:<\/strong> \u201eSatisf\u0103c\u0103tor\u201d (func\u021bionare nelimitat\u0103 permis\u0103)<\/li>\n <li><strong>Zona C:<\/strong> \u201eAcceptabil pentru o perioad\u0103 limitat\u0103 de timp\u201d (este necesar\u0103 identificarea \u0219i eliminarea cauzei)<\/li>\n <li><strong>Zona D:<\/strong> \u201eInacceptabil\u201d (vibra\u021biile pot provoca daune)<\/li>\n <\/ul>\n \n <h4>ISO 14695:2003:<\/h4>\n <p>Acest standard stabile\u0219te metode \u0219i condi\u021bii unificate pentru m\u0103sur\u0103torile vibra\u021biilor ventilatoarelor industriale, necesare pentru asigurarea comparabilit\u0103\u021bii \u0219i reproductibilit\u0103\u021bii rezultatelor ob\u021binute la momente diferite \u0219i pe echipamente diferite.<\/p>\n\n <h3>5.2. Strategie pe termen lung: Integrare \u00een programul de mentenan\u021b\u0103 predictiv\u0103<\/h3>\n \n <p><strong>Echilibrarea evacuarii<\/strong> nu ar trebui considerat\u0103 o opera\u021biune de repara\u021bie unic\u0103. Este o parte integrant\u0103 a strategiei moderne de mentenan\u021b\u0103 predictiv\u0103.<\/p>\n \n <p>Implementarea monitoriz\u0103rii regulate a vibra\u021biilor (de exemplu, prin colectarea datelor de traseu folosind analizoare portabile) permite urm\u0103rirea st\u0103rii echipamentelor \u00een timp. Analiza tendin\u021belor, \u00een special cre\u0219terea treptat\u0103 a amplitudinii vibra\u021biilor la frecven\u021ba de func\u021bionare 1x, este un indicator fiabil al dezvolt\u0103rii dezechilibrului.<\/p>\n \n <p>Aceast\u0103 abordare permite:<\/p>\n <ul>\n <li>Planificarea echilibr\u0103rii \u00een avans, \u00eenainte ca nivelul vibra\u021biilor s\u0103 ating\u0103 valorile critice stabilite de standardul ISO 10816-3.<\/li>\n <li>Prevenirea deterior\u0103rii secundare a rulmen\u021bilor, cuplajelor \u0219i structurilor de sus\u021binere care apar inevitabil \u00een timpul func\u021bion\u0103rii prelungite cu vibra\u021bii excesive.<\/li>\n <li>Eliminarea timpilor de nefunc\u021bionare neplanifica\u021bi \u00een caz de urgen\u021b\u0103 prin transformarea lucr\u0103rilor de repara\u021bii \u00een categoria lucr\u0103rilor preventive planificate.<\/li>\n <\/ul>\n \n <p>Crearea unei baze de date electronice cu principalele st\u0103ri de vibra\u021bii ale echipamentelor \u0219i analiza regulat\u0103 a tendin\u021belor formeaz\u0103 baza pentru luarea unor decizii de \u00eentre\u021binere solide din punct de vedere tehnic \u0219i eficiente din punct de vedere economic, cresc\u00e2nd \u00een cele din urm\u0103 fiabilitatea \u0219i eficien\u021ba general\u0103 a produc\u021biei.<\/p>\n\n <div class=\"warning\">\n <strong>Concluzie:<\/strong> Profesional <strong>echilibrarea evacuarii<\/strong> folosind echipamente moderne precum <strong>Balanset-1A<\/strong> necesit\u0103 o abordare sistematic\u0103 care combin\u0103 cuno\u0219tin\u021be teoretice, abilit\u0103\u021bi practice \u0219i proceduri de diagnostic adecvate. 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\n\n\n \n \n Echilibrarea ventilatoarelor industriale de evacuare: Ghid complet de la teorie la practic\u0103<\/title>\n \n <meta name=\"keywords\" content=\"exhaust balancing, fan balancing, industrial ventilation, vibration analysis, field balancing, Balanset-1A, exhaust fan maintenance\">\n <style>\n\n h1 {\n color: #1e3a8a;\n border-bottom: 3px solid #3b82f6;\n padding-bottom: 10px;\n }\n h2 {\n color: #1e40af;\n border-left: 4px solid #3b82f6;\n padding-left: 15px;\n margin-top: 30px;\n }\n h3 {\n color: #1e40af;\n margin-top: 25px;\n }\n .table-container {\n overflow-x: auto;\n margin: 20px 0;\n }\n table {\n width: 100%;\n border-collapse: collapse;\n margin: 20px 0;\n background-color: white;\n }\n th {\n background-color: #1e40af;\n color: white;\n padding: 12px;\n text-align: left;\n }\n td {\n padding: 10px;\n border: 1px solid #ddd;\n }\n tr:nth-child(even) {\n background-color: #f1f5f9;\n }\n .formula {\n background-color: #eff6ff;\n padding: 15px;\n border-left: 4px solid #3b82f6;\n margin: 15px 0;\n font-family: monospace;\n text-align: center;\n }\n .warning {\n background-color: #fef3c7;\n border: 1px solid #f59e0b;\n padding: 15px;\n margin: 15px 0;\n border-radius: 5px;\n }\n .tip {\n background-color: #dcfce7;\n border: 1px solid #22c55e;\n padding: 15px;\n margin: 15px 0;\n border-radius: 5px;\n }\n ul, ol {\n margin: 15px 0;\n padding-left: 30px;\n }\n .highlight {\n background-color: #dbeafe;\n padding: 2px 4px;\n border-radius: 3px;\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"container\">\n <h1>Echilibrarea ventilatoarelor industriale de evacuare: Ghid complet de la teorie la practic\u0103<\/h1>\n\n <h2>Sec\u021biunea 1: Principiile fundamentale ale dezechilibrului - \u00cen\u021belegerea \u201eDe ce\u201d-ului<\/h2>\n \n <p>Echilibrarea maselor rotative este una dintre opera\u021biunile cheie \u00een \u00eentre\u021binerea \u0219i repararea echipamentelor industriale, fiind deosebit de important\u0103 pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii. Pentru eliminarea eficient\u0103 \u0219i informat\u0103 a problemelor legate de vibra\u021biile excesive, este necesar\u0103 o \u00een\u021belegere profund\u0103 a proceselor fizice care stau la baza dezechilibrului, a variet\u0103\u021bilor, cauzelor \u0219i consecin\u021belor distructive ale acestuia.<\/p>\n\n <h3>1.1. Fizica dezechilibrului: \u0218tiin\u021ba vibra\u021biilor<\/h3>\n \n <p>\u00centr-o lume ideal\u0103, un corp rotativ, cum ar fi rotorul unui ventilator de evacuare, ar fi perfect echilibrat. Din punct de vedere mecanic, aceasta \u00eenseamn\u0103 c\u0103 axa sa central\u0103 principal\u0103 de iner\u021bie coincide complet cu axa geometric\u0103 de rota\u021bie. Cu toate acestea, \u00een realitate, din cauza imperfec\u021biunilor de fabrica\u021bie \u0219i a factorilor opera\u021bionali, apare o condi\u021bie numit\u0103 dezechilibru, \u00een care centrul de mas\u0103 al rotorului este decalat fa\u021b\u0103 de axa sa de rota\u021bie.<\/p>\n \n <p>C\u00e2nd un astfel de rotor dezechilibrat \u00eencepe s\u0103 se roteasc\u0103, aceast\u0103 deplasare a masei genereaz\u0103 for\u021b\u0103 centrifug\u0103. Aceast\u0103 for\u021b\u0103 \u00ee\u0219i schimb\u0103 continuu direc\u021bia, ac\u021bion\u00e2nd perpendicular pe axa de rota\u021bie \u0219i transmi\u021b\u00e2ndu-se prin arbore la suporturile lag\u0103relor \u0219i apoi la \u00eentreaga structur\u0103. Aceast\u0103 for\u021b\u0103 ciclic\u0103 este cauza principal\u0103 a vibra\u021biilor.<\/p>\n \n <div class=\"formula\">\n F = m \u00d7 \u03c9\u00b2 \u00d7 r\n <\/div>\n \n <p>Unde F este for\u021ba centrifug\u0103, m este magnitudinea masei dezechilibrate, \u03c9 este viteza unghiular\u0103, iar r este distan\u021ba de la axa de rota\u021bie la masa dezechilibrat\u0103 (excentricitate).<\/p>\n \n <p>Aspectul cheie al acestei rela\u021bii este c\u0103 for\u021ba iner\u021bial\u0103 cre\u0219te propor\u021bional cu p\u0103tratul vitezei de rota\u021bie (\u03c9\u00b2). Acest lucru are o semnifica\u021bie practic\u0103 enorm\u0103 pentru <strong>echilibrarea evacuarii<\/strong> proceduri. De exemplu, dublarea vitezei ventilatorului de evacuare va cre\u0219te for\u021ba vibra\u021bional\u0103 de patru ori. Aceast\u0103 cre\u0219tere neliniar\u0103 explic\u0103 de ce un ventilator de evacuare care func\u021bioneaz\u0103 acceptabil la viteze mici poate prezenta niveluri catastrofale de vibra\u021bii atunci c\u00e2nd atinge o vitez\u0103 nominal\u0103 sau crescut\u0103, cum ar fi atunci c\u00e2nd este controlat prin convertizoare de frecven\u021b\u0103.<\/p>\n\n <h3>1.2. Clasificarea dezechilibrului: trei tipuri de probleme<\/h3>\n \n <p>Dezechilibrul rotorului, \u00een func\u021bie de aranjamentul reciproc al axei de iner\u021bie \u0219i al axei de rota\u021bie, este \u00eemp\u0103r\u021bit \u00een trei tipuri principale:<\/p>\n \n <h4>Dezechilibru static (for\u021b\u0103\/dezechilibru static)<\/h4>\n\t\t\t<div id=\"attachment_3705\" style=\"width: 760px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/\u0420\u043e\u0442\u0435\u0440_statika-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3705\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/Roter_statika-1024x549.jpg\" alt=\"Configura\u021bie de echilibrare a rotorului cu motor electric pe suporturi, senzori de vibra\u021bii, dispozitiv de m\u0103surare, laptop cu afi\u0219aj software\" width=\"750\" height=\"402\" class=\"size-large wp-image-3705\" \/><\/a><p id=\"caption-attachment-3705\" class=\"wp-caption-text\">Configura\u021bie ma\u0219in\u0103 de echilibrat rotoare cu sistem de monitorizare controlat de computer pentru m\u0103surarea for\u021belor statice \u0219i dinamice \u00een vederea detect\u0103rii dezechilibrelor \u00een componentele rotative ale motorului electric.<\/p><\/div>\n <p><strong>Defini\u0163ie:<\/strong> Apare atunci c\u00e2nd axa de iner\u021bie este deplasat\u0103 paralel cu axa de rota\u021bie. Acest lucru poate fi vizualizat ca av\u00e2nd un \u201epunct greu\u201d pe rotor.<\/p>\n <p><strong>Diagnostic:<\/strong> Acest tip de dezechilibru este unic prin faptul c\u0103 se manifest\u0103 chiar \u0219i \u00een repaus. Dac\u0103 un astfel de rotor este plasat pe suporturi orizontale cu frecare redus\u0103 (numite \u201emuchii de cu\u021bit\u201d), acesta se va roti \u00eentotdeauna sub influen\u021ba gravita\u021biei \u0219i se va opri cu v\u00e2rful greu \u00een jos.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Eliminat relativ simplu prin ad\u0103ugarea (sau eliminarea) unei mase corective \u00eentr-un plan, la 180 de grade opus punctului greu identificat. Dezechilibrul static este caracteristic rotoarelor \u00eenguste, \u00een form\u0103 de disc, cu raporturi lungime-diametru (L\/D) mici (de exemplu, mai pu\u021bin de 0,5).<\/p>\n \n <h4>Dezechilibrul cuplului<\/h4>\n\t\t\t\n <p><strong>Defini\u0163ie:<\/strong> Apare atunci c\u00e2nd axa de iner\u021bie intersecteaz\u0103 axa de rota\u021bie \u00een centrul de mas\u0103 al rotorului. Din punct de vedere fizic, acest lucru este echivalent cu a avea dou\u0103 mase egale dezechilibrate situate \u00een dou\u0103 planuri diferite de-a lungul rotorului \u0219i pozi\u021bionate la 180 de grade una fa\u021b\u0103 de cealalt\u0103.<\/p>\n <p><strong>Diagnostic:<\/strong> \u00cen pozi\u021bie static\u0103, un astfel de rotor este echilibrat \u0219i nu va tinde s\u0103 ocupe nicio pozi\u021bie specific\u0103. Cu toate acestea, \u00een timpul rota\u021biei, aceast\u0103 pereche de mase creeaz\u0103 un moment de \u201ebalansare\u201d sau \u201eoscilare\u201d care tinde s\u0103 roteasc\u0103 rotorul perpendicular pe axa de rota\u021bie, provoc\u00e2nd vibra\u021bii puternice la nivelul suporturilor.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Necesit\u0103 corec\u021bie \u00een cel pu\u021bin dou\u0103 planuri pentru a compensa acest moment.<\/p>\n \n <h4>Dezechilibru dinamic<\/h4>\n\t\t\t<div id=\"attachment_3695\" style=\"width: 760px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/long-rotor.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3695\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/03\/long-rotor-1024x549.jpg\" alt=\"Configurarea echilibr\u0103rii rotorului cu motor electric pe suporturi de rulmen\u021bi, senzori de vibra\u021bii, cabluri \u0219i ecran de laptop pentru analizorul Vibromera\" width=\"750\" height=\"402\" class=\"size-large wp-image-3695\" \/><\/a><p id=\"caption-attachment-3695\" class=\"wp-caption-text\">Schema tehnic\u0103 a unui aparat de testare a rotorului unui motor electric cu \u00eenf\u0103\u0219ur\u0103ri de cupru montate pe rulmen\u021bi de precizie, conectat la un echipament electronic de monitorizare pentru m\u0103surarea dinamicii de rota\u021bie.<\/p><\/div>\n \u00a0 \u00a0 \u00a0 \u00a0<p><strong>Defini\u0163ie:<\/strong> Acesta este cel mai general \u0219i frecvent \u00eent\u00e2lnit caz \u00een practic\u0103, \u00een care axa de iner\u021bie nu este nici paralel\u0103, nici intersecteaz\u0103 axa de rota\u021bie, ci este oblic\u0103 \u00een spa\u021biu cu aceasta. Dezechilibrul dinamic este \u00eentotdeauna o combina\u021bie de dezechilibre statice \u0219i de cuplu.<\/p>\n <p><strong>Diagnostic:<\/strong> Se manifest\u0103 doar \u00een timpul rota\u021biei rotorului.<\/p>\n <p><strong>Corec\u0163ie:<\/strong> Necesit\u0103 \u00eentotdeauna echilibrarea \u00een cel pu\u021bin dou\u0103 plane de corec\u021bie pentru a compensa simultan at\u00e2t componentele for\u021bei, c\u00e2t \u0219i cele ale momentului.<\/p>\n\n <h3>1.3. Cauzele profunde ale problemelor: De unde provine dezechilibrul?<\/h3>\n \n <p>Cauzele dezechilibrului pot fi \u00eemp\u0103r\u021bite \u00een dou\u0103 mari grupuri, relevante \u00een special pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii:<\/p>\n \n <h4>Factori opera\u021bionali (cei mai frecven\u021bi):<\/h4>\n <ul>\n <li><strong>Acumulare de materiale:<\/strong> Cea mai frecvent\u0103 cauz\u0103 pentru func\u021bionarea ventilatoarelor de evacuare \u00een medii contaminate. Acumularea neuniform\u0103 de praf, murd\u0103rie, vopsea, produse de proces sau umezeal\u0103 pe palele rotorului modific\u0103 distribu\u021bia masei.<\/li>\n <li><strong>Uzur\u0103 \u0219i coroziune:<\/strong> Uzura abraziv\u0103 inegal\u0103 a lamelor, eroziunea pic\u0103turilor cauzat\u0103 de p\u0103trunderea lichidului sau coroziunea chimic\u0103 duc la pierderea de mas\u0103 \u00een anumite zone \u0219i la un dezechilibru consecutiv.<\/li>\n <li><strong>Deformare termic\u0103:<\/strong> \u00cenc\u0103lzirea sau r\u0103cirea neuniform\u0103 a rotorului, \u00een special \u00een timpul opririlor prelungite ale echipamentelor fierbin\u021bi, poate duce la \u00eendoirea temporar\u0103 sau permanent\u0103 a arborelui sau a rotorului.<\/li>\n <li><strong>Pierderea greut\u0103\u021bilor de echilibrare:<\/strong> Greut\u0103\u021bile corective instalate anterior se pot desprinde din cauza vibra\u021biilor, coroziunii sau impactului mecanic.<\/li>\n <\/ul>\n \n <h4>Defecte de fabrica\u021bie \u0219i asamblare:<\/h4>\n <ul>\n <li><strong>Defecte de fabrica\u021bie:<\/strong> Neuniformitatea materialului (de exemplu, porozitatea turn\u0103rii), inexactit\u0103\u021bi \u00een prelucrare sau asamblarea palelor pe rotor de calitate slab\u0103.<\/li>\n <li><strong>Erori de asamblare \u0219i instalare:<\/strong> Montare necorespunz\u0103toare a rotorului pe arbore, aliniere necorespunz\u0103toare, sl\u0103birea fix\u0103rii butucului, aliniere necorespunz\u0103toare a arborilor motorului \u0219i ventilatorului.<\/li>\n <li><strong>Probleme ale componentelor conexe:<\/strong> Utilizarea curelelor de transmisie nestandardizate sau uzate, defecte ale rulmen\u021bilor, sl\u0103birea fix\u0103rii unit\u0103\u021bii pe funda\u021bie (starea cunoscut\u0103 sub numele de \u201epicior moale\u201d).<\/li>\n <\/ul>\n\n <h3>1.4. Consecin\u021bele dezechilibrului: Reac\u021bia \u00een lan\u021b a distrugerii<\/h3>\n \n <p>Ignorarea problemelor de dezechilibru duce la o reac\u021bie \u00een lan\u021b de consecin\u021be distructive care afecteaz\u0103 at\u00e2t componentele echipamentelor mecanice, c\u00e2t \u0219i performan\u021ba economic\u0103, fiind \u00een special critic\u0103 \u00een cazul sistemelor de evacuare:<\/p>\n \n <h4>Consecin\u021be mecanice:<\/h4>\n <ul>\n <li><strong>Vibra\u021bii \u0219i zgomot:<\/strong> Cre\u0219terea brusc\u0103 a vibra\u021biilor \u0219i a zgomotului este cea mai evident\u0103 consecin\u021b\u0103, duc\u00e2nd la deteriorarea condi\u021biilor de lucru \u0219i servind ca prim semnal al unei defec\u021biuni.<\/li>\n <li><strong>Uzur\u0103 accelerat\u0103 a rulmen\u021bilor:<\/strong> Cea mai frecvent\u0103, costisitoare \u0219i periculoas\u0103 consecin\u021b\u0103. Sarcinile ciclice cauzate de for\u021ba centrifug\u0103 provoac\u0103 oboseal\u0103 accelerat\u0103 \u0219i distrugerea elementelor de rulare \u0219i a c\u0103ilor de rulare, reduc\u00e2nd durata de via\u021b\u0103 a rulmen\u021bilor de zeci de ori.<\/li>\n <li><strong>Defec\u021biune la oboseal\u0103:<\/strong> Expunerea prelungit\u0103 la vibra\u021bii duce la acumularea de oboseal\u0103 \u00een metal, put\u00e2nd cauza distrugerea arborilor, a structurilor de sus\u021binere, a sudurilor \u0219i chiar ruperea \u0219uruburilor de ancorare care fixeaz\u0103 unitatea de funda\u021bie.<\/li>\n <li><strong>Deteriorarea componentelor adiacente:<\/strong> Vibra\u021biile distrug, de asemenea, conexiunile cuplajelor, transmisiile prin curele \u0219i etan\u0219\u0103rile arborelui.<\/li>\n <\/ul>\n \n <h4>Consecin\u021be economice \u0219i opera\u021bionale:<\/h4>\n <ul>\n <li><strong>Consum crescut de energie:<\/strong> O parte semnificativ\u0103 a energiei motorului nu este cheltuit\u0103 pentru mi\u0219carea aerului, ci pentru crearea de vibra\u021bii, ceea ce duce la pierderi financiare directe.<\/li>\n <li><strong>Performan\u021b\u0103 redus\u0103:<\/strong> Vibra\u021biile pot perturba caracteristicile aerodinamice ale rotorului, duc\u00e2nd la reducerea fluxului de aer \u0219i a presiunii create de ventilatorul de evacuare.<\/li>\n <li><strong>Timp de nefunc\u021bionare \u00een caz de urgen\u021b\u0103:<\/strong> \u00cen cele din urm\u0103, dezechilibrul duce la oprirea de urgen\u021b\u0103 a echipamentelor, ceea ce duce la repara\u021bii costisitoare \u0219i pierderi cauzate de nefunc\u021bionarea liniei de produc\u021bie.<\/li>\n <li><strong>Amenin\u021b\u0103ri la adresa siguran\u021bei:<\/strong> \u00cen cazuri critice, este posibil\u0103 distrugerea rotorului la viteze mari, ceea ce reprezint\u0103 amenin\u021b\u0103ri directe la adresa vie\u021bii \u0219i s\u0103n\u0103t\u0103\u021bii personalului.<\/li>\n <\/ul>\n\n <h2>Sec\u021biunea 2: Diagnosticarea vibra\u021biilor - Arta diagnostic\u0103rii precise<\/h2>\n \n <p>Diagnosticarea corect\u0103 este piatra de temelie a unei echilibr\u0103ri reu\u0219ite. \u00cenainte de a continua corec\u021bia masei, este necesar s\u0103 se stabileasc\u0103 cu mare \u00eencredere c\u0103 dezechilibrul este \u00eentr-adev\u0103r cauza principal\u0103 a vibra\u021biilor excesive. Aceast\u0103 sec\u021biune este dedicat\u0103 metodelor instrumentale care permit nu doar detectarea problemei, ci \u0219i identificarea precis\u0103 a naturii acesteia.<\/p>\n\n <h3>2.1. De ce vibra\u021biile nu sunt \u00eentotdeauna dezechilibrate: diagnostic diferen\u021bial<\/h3>\n \n <p>Un principiu cheie pe care orice specialist \u00een \u00eentre\u021binere trebuie s\u0103 \u00eel \u00een\u021beleag\u0103: vibra\u021biile excesive sunt un simptom, nu un diagnostic. De\u0219i dezechilibrul este una dintre cele mai frecvente cauze ale vibra\u021biilor ventilatorului de evacuare, exist\u0103 \u0219i alte defecte care pot crea tipare similare, care trebuie excluse \u00eenainte de a \u00eencepe. <strong>echilibrarea evacuarii<\/strong> lucru.<\/p>\n \n <p>Principalele defecte \u201emascate\u201d \u00een dezechilibru:<\/p>\n <ul>\n <li><strong>Nealiniere:<\/strong> Nealinierea arborelui dintre motor \u0219i ventilator. \u00cen spectrul de vibra\u021bii, caracterizat\u0103 printr-un v\u00e2rf semnificativ la frecven\u021b\u0103 dubl\u0103 de func\u021bionare (2x), \u00een special \u00een direc\u021bie axial\u0103.<\/li>\n <li><strong>Sl\u0103bire mecanic\u0103:<\/strong> Sl\u0103birea \u0219uruburilor de sus\u021binere a lag\u0103relor, fisuri \u00een cadrul funda\u021biei. Se manifest\u0103 printr-o serie de armonice de frecven\u021b\u0103 de func\u021bionare (1x, 2x, 3x etc.) \u0219i, \u00een cazuri grave, subarmonice (0,5x, 1,5x).<\/li>\n <li><strong>Defecte ale rulmen\u021bilor:<\/strong> Exfoliere, fisuri pe c\u0103ile de rulare sau elementele de rulare. Genereaz\u0103 vibra\u021bii la componente caracteristice de \u00eenalt\u0103 frecven\u021b\u0103, nesincrone (nu multipli ai frecven\u021bei de rota\u021bie), calculate din geometria rulmentului.<\/li>\n <li><strong>Arbore \u00eendoit:<\/strong> Creeaz\u0103 vibra\u021bii at\u00e2t la frecven\u021bele de func\u021bionare (1x), c\u00e2t \u0219i la cele de func\u021bionare dubl\u0103 (2x), ceea ce complic\u0103 foarte mult diagnosticarea \u0219i necesit\u0103 aplicarea obligatorie a analizei de faz\u0103 pentru a distinge \u00eentre dezechilibru \u0219i nealiniere.<\/li>\n <li><strong>Rezonan\u0163\u0103:<\/strong> Amplificare brusc\u0103 \u0219i multipl\u0103 a vibra\u021biilor atunci c\u00e2nd frecven\u021ba de rota\u021bie \u00een func\u021bionare coincide cu una dintre frecven\u021bele naturale ale structurii. Aceast\u0103 condi\u021bie extrem de periculoas\u0103 nu este eliminat\u0103 prin echilibrare.<\/li>\n <\/ul>\n\n <h3>2.2. Trusa de instrumente a specialistului: Ochii \u0219i urechile inginerului<\/h3>\n \n <p>Diagnosticare precis\u0103 a vibra\u021biilor \u0219i opera\u021biuni ulterioare <strong>echilibrarea evacuarii<\/strong> necesit\u0103 echipamente specializate:<\/p>\n \n <ul>\n <li><strong>Senzori de vibra\u021bii (accelerometre):<\/strong> Mijloace primare de colectare a datelor. Pentru o imagine tridimensional\u0103 complet\u0103 a vibra\u021biilor ma\u0219inii, senzorii sunt instala\u021bi pe carcasele rulmen\u021bilor \u00een trei direc\u021bii perpendiculare reciproc: orizontal\u0103, vertical\u0103 \u0219i axial\u0103.<\/li>\n <li><strong>Analizoare\/echilibratoare de vibra\u021bii portabile:<\/strong> Instrumente moderne precum <strong>Balanset-1A<\/strong> Combin\u0103 func\u021bii de vibrometru (m\u0103surarea nivelului general al vibra\u021biilor), analizor de spectru cu transformat\u0103 Fourier rapid\u0103 (FFT), contor de faz\u0103 \u0219i calculator de echilibrare. Acestea permit diagnosticarea complet\u0103 \u0219i echilibrarea direct la locul de operare al echipamentului.<\/li>\n <li><strong>Tahometru (optic sau laser):<\/strong> Parte integrant\u0103 a oric\u0103rui kit de echilibrare. Necesar pentru m\u0103surarea precis\u0103 a vitezei de rota\u021bie \u0219i sincronizarea m\u0103sur\u0103rii fazei. Pentru func\u021bionare, o mic\u0103 bucat\u0103 de band\u0103 reflectorizant\u0103 se aplic\u0103 pe ax sau pe alt\u0103 pies\u0103 rotativ\u0103.<\/li>\n <li><strong>Software:<\/strong> Software-ul specializat permite gestionarea bazelor de date ale echipamentelor, analizarea tendin\u021belor vibra\u021biilor \u00een timp, efectuarea de diagnostice aprofundate ale spectrului \u0219i generarea automat\u0103 a rapoartelor de lucru.<\/li>\n <\/ul>\n\n <h3>2.3. Citirea spectrelor de vibra\u021bii (analiza FFT): Descifrarea semnalelor ma\u0219inii<\/h3>\n \n <p>Semnalul de vibra\u021bie m\u0103surat de accelerometru reprezint\u0103 o dependen\u021b\u0103 complex\u0103 de amplitudine-timp. Pentru diagnosticare, un astfel de semnal este pu\u021bin informativ. Metoda cheie de analiz\u0103 este Transformata Fourier rapid\u0103 (FFT), care descompune matematic semnalul temporal complex \u00een spectrul s\u0103u de frecven\u021b\u0103. Spectrul arat\u0103 exact ce frecven\u021be con\u021bin energie de vibra\u021bie, permi\u021b\u00e2nd identificarea acestor surse de vibra\u021bii.<\/p>\n \n <p>Indicatorul cheie al dezechilibrului \u00een spectrul vibra\u021biilor este prezen\u021ba unui v\u00e2rf dominant la o frecven\u021b\u0103 exact egal\u0103 cu frecven\u021ba de rota\u021bie a rotorului. Aceast\u0103 frecven\u021b\u0103 este desemnat\u0103 ca 1x. Amplitudinea (\u00een\u0103l\u021bimea) acestui v\u00e2rf este direct propor\u021bional\u0103 cu magnitudinea dezechilibrului.<\/p>\n\n <div class=\"table-container\">\n <table>\n <thead>\n <tr>\n <th>Defect<\/th>\n <th>Frecven\u021be caracteristice \u00een spectru<\/th>\n <th>Caracteristici de m\u0103surare a fazei<\/th>\n <th>Ac\u021biuni recomandate<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Dezechilibru static<\/td>\n <td>V\u00e2rf dominant 1x \u00een direc\u021bii radiale (orizontal\u0103, vertical\u0103)<\/td>\n <td>Faz\u0103 stabil\u0103. Diferen\u021b\u0103 de faz\u0103 \u00eentre suporturi \u00een aceea\u0219i direc\u021bie ~0\u00b0 (\u00b130\u00b0)<\/td>\n <td>Cur\u0103\u021ba\u021bi rotorul. Efectua\u021bi echilibrarea pe un singur plan<\/td>\n <\/tr>\n <tr>\n <td>Dezechilibru de cuplu\/dinamic<\/td>\n <td>V\u00e2rf dominant 1x \u00een direc\u021bii radiale \u0219i adesea axiale<\/td>\n <td>Faz\u0103 stabil\u0103. Diferen\u021b\u0103 de faz\u0103 \u00eentre suporturi \u00een aceea\u0219i direc\u021bie ~180\u00b0 (\u00b130\u00b0)<\/td>\n <td>Verifica\u021bi deformarea (\u201efigura opt\u201d). Efectua\u021bi echilibrarea pe dou\u0103 planuri<\/td>\n <\/tr>\n <tr>\n <td>Nealiniere<\/td>\n <td>V\u00e2rf ridicat de 2x, adesea \u00eenso\u021bit de 1x \u0219i 3x. Se observ\u0103 mai ales \u00een direc\u021bie axial\u0103.<\/td>\n <td>Diferen\u021b\u0103 de faz\u0103 ~180\u00b0 \u00een direc\u021bie axial\u0103 pe cuplaj<\/td>\n <td>Efectua\u021bi alinierea cu laser a arborilor motorului \u0219i ventilatorului<\/td>\n <\/tr>\n <tr>\n <td>Sl\u0103bire mecanic\u0103<\/td>\n <td>Serie de armonice 1x, 2x, 3x... Adesea sunt prezente subarmonice (0,5x, 1,5x)<\/td>\n <td>Faz\u0103 instabil\u0103, \u201es\u0103ritoare\u201d<\/td>\n <td>Str\u00e2nge\u021bi toate conexiunile cu \u0219uruburi (suporturi, funda\u021bie). Verifica\u021bi dac\u0103 exist\u0103 fisuri.<\/td>\n <\/tr>\n <tr>\n <td>Defect al rulmentului<\/td>\n <td>V\u00e2rfuri nesincrone de \u00eenalt\u0103 frecven\u021b\u0103 la frecven\u021bele caracteristice ale defectelor<\/td>\n <td>-<\/td>\n <td>Verifica\u021bi lubrifierea. \u00cenlocui\u021bi rulmentul.<\/td>\n <\/tr>\n <tr>\n <td>Rezonan\u0163\u0103<\/td>\n <td>V\u00e2rf extrem de ridicat la frecven\u021ba de func\u021bionare care coincide cu frecven\u021ba natural\u0103<\/td>\n <td>Faza se schimb\u0103 brusc cu 180\u00b0 la trecerea prin frecven\u021ba de rezonan\u021b\u0103<\/td>\n <td>Modifica\u021bi viteza de operare sau rigiditatea structural\u0103. Echilibrarea este ineficient\u0103<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>2.4. Rolul cheie al analizei de faz\u0103: confirmarea diagnosticului<\/h3>\n \n <p>Analiza fazelor este un instrument puternic care permite confirmarea definitiv\u0103 a diagnosticului de \u201edezechilibru\u201d \u0219i distingerea acestuia de alte defecte care se manifest\u0103, de asemenea, la frecven\u021ba de func\u021bionare 1x.<\/p>\n \n <p>Faza este, \u00een esen\u021b\u0103, rela\u021bia de timp dintre dou\u0103 semnale de vibra\u021bie de frecven\u021b\u0103 identic\u0103, m\u0103surat\u0103 \u00een grade. Aceasta arat\u0103 cum se mi\u0219c\u0103 diferite puncte ale ma\u0219inii unul fa\u021b\u0103 de cel\u0103lalt \u0219i fa\u021b\u0103 de marcajul reflectorizant de pe arbore.<\/p>\n \n <h4>Determinarea tipului de dezechilibru \u00een func\u021bie de faz\u0103:<\/h4>\n <ul>\n <li><strong>Dezechilibru static:<\/strong> Ambele suporturi ale rulmen\u021bilor se mi\u0219c\u0103 sincron, \u201e\u00een faz\u0103\u201d. Prin urmare, diferen\u021ba de unghi de faz\u0103 m\u0103surat\u0103 la dou\u0103 suporturi \u00een aceea\u0219i direc\u021bie radial\u0103 va fi apropiat\u0103 de 0\u00b0 (\u00b130\u00b0).<\/li>\n <li><strong>Dezechilibru de cuplu sau dinamic:<\/strong> Suporturile efectueaz\u0103 o mi\u0219care oscilatorie \u201e\u00een antifaz\u0103\u201d. \u00cen mod corespunz\u0103tor, diferen\u021ba de faz\u0103 dintre ele va fi aproape de 180\u00b0 (\u00b130\u00b0).<\/li>\n <\/ul>\n \n <div class=\"warning\">\n <strong>Important:<\/strong> Stabilitatea unghiului de faz\u0103 \u00een sine este un criteriu crucial de diagnostic. \u00cenainte de a \u00eencepe echilibrarea, trebuie efectuate 2-3 porniri de control pentru a se asigura c\u0103 citirile de amplitudine \u0219i faz\u0103 sunt repetabile (de exemplu, faza nu deviaz\u0103 mai mult de 10-15\u00b0). 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data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Senzor optic (tahometru cu laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Baza magnetic\u0103.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Band\u0103 reflectorizant\u0103\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic "Balanset-1A" OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Con\u021binutul kitului Balanset-1A cu 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class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic "Balanset-1A" OEM\">Echilibrator dinamic \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/posts\/800?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas 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class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n\t\t\t\n <h2>Sec\u021biunea 3: Ghid practic de echilibrare - Metode pas cu pas \u0219i sfaturi profesionale<\/h2>\n \n <p>Aceast\u0103 sec\u021biune prezint\u0103 \u00eendrum\u0103ri detaliate, pas cu pas, pentru efectuarea <strong>echilibrarea evacuarii<\/strong> munc\u0103, de la opera\u021biuni preg\u0103titoare p\u00e2n\u0103 la tehnici specializate pentru diferite tipuri de ventilatoare de evacuare.<\/p>\n\n <h3>3.1. Etapa preg\u0103titoare - 50% de succes<\/h3>\n \n <p>Preg\u0103tirea de calitate este cheia succesului \u0219i siguran\u021bei <strong>echilibrarea evacuarii<\/strong>Neglijarea acestei etape duce adesea la rezultate incorecte \u0219i pierdere de timp.<\/p>\n \n <h4>Siguran\u021ba \u00eenainte de toate:<\/h4>\n <p>\u00cenainte de \u00eenceperea oric\u0103rei lucr\u0103ri, echipamentul trebuie complet scos de sub tensiune. Se aplic\u0103 proceduri standard de blocare\/etichetare (LOTO) pentru a preveni pornirea accidental\u0103. Trebuie verificat\u0103 absen\u021ba tensiunii la bornele motorului.<\/p>\n \n <h4>Cur\u0103\u021bare \u0219i inspec\u021bie vizual\u0103:<\/h4>\n <p>Aceasta nu este o opera\u021biune preliminar\u0103, ci primar\u0103. Rotorul trebuie cur\u0103\u021bat temeinic de orice acumul\u0103ri - murd\u0103rie, praf, produs. \u00cen multe cazuri, o cur\u0103\u021bare de calitate elimin\u0103 complet sau reduce semnificativ dezechilibrul, f\u0103c\u00e2nd inutil\u0103 o echilibrare ulterioar\u0103. Dup\u0103 cur\u0103\u021bare, se efectueaz\u0103 o inspec\u021bie vizual\u0103 atent\u0103 a paletelor, discurilor \u0219i sudurilor pentru a depista fisuri, ad\u00e2ncituri, deform\u0103ri \u0219i semne de uzur\u0103.<\/p>\n \n <h4>Verificare mecanic\u0103 (\u201eIerarhia interven\u021biilor\u201d):<\/h4>\n <p>\u00cenainte de corectarea distribu\u021biei masei, trebuie verificat\u0103 rezisten\u021ba mecanic\u0103 a \u00eentregului ansamblu:<\/p>\n <ul>\n <li><strong>Str\u00e2ngerea conexiunii cu \u0219uruburi:<\/strong> Verifica\u021bi \u0219i, dac\u0103 este necesar, str\u00e2nge\u021bi \u0219uruburile care fixeaz\u0103 rotorul de butuc, butucul de arbore, carcasele lag\u0103relor de cadru \u0219i \u0219uruburile de ancorare ale cadrului de funda\u021bie.<\/li>\n <li><strong>Verificare geometric\u0103:<\/strong> Folosind comparatoare cu cadran, verifica\u021bi b\u0103taia radial\u0103 \u0219i axial\u0103 a arborelui \u0219i a rotorului. De asemenea, verifica\u021bi vizual sau folosind \u0219abloane \u0219i instrumente de m\u0103surare alinierea palelor \u0219i uniformitatea unghiului de atac al acestora.<\/li>\n <\/ul>\n\n <h3>3.2. Echilibrare static\u0103: Metode simple pentru cazuri simple<\/h3>\n \n <p>Echilibrarea static\u0103 se aplic\u0103 rotoarelor \u00eenguste, \u00een form\u0103 de disc (de exemplu, rotoarelor cu raport L\/D mic) atunci c\u00e2nd echilibrarea dinamic\u0103 este imposibil\u0103 din punct de vedere tehnic sau impracticabil\u0103 din punct de vedere economic.<\/p>\n \n <h4>Metoda cu muchie de cu\u021bit:<\/h4>\n <p>Metod\u0103 clasic\u0103 \u0219i foarte precis\u0103. Rotorul (scos din unitate) este plasat pe dou\u0103 prisme perfect orizontale, paralele \u0219i netede sau pe dou\u0103 suporturi cu frecare redus\u0103. Sub ac\u021biunea gravita\u021biei, \u201epunctul greu\u201d al rotorului va tinde \u00eentotdeauna s\u0103 ocupe pozi\u021bia inferioar\u0103. Greutatea corectiv\u0103 este instalat\u0103 strict opus (la 180\u00b0) acestui punct. Procesul se repet\u0103 p\u00e2n\u0103 c\u00e2nd rotorul r\u0103m\u00e2ne \u00een echilibru neutru \u00een orice pozi\u021bie.<\/p>\n \n <h4>Metoda de rota\u021bie liber\u0103 (\u201elinie vertical\u0103\u201d):<\/h4>\n <p>Metod\u0103 simplificat\u0103 aplicabil\u0103 ventilatoarelor cu pale direct montate. Dup\u0103 scoaterea curelelor de transmisie (dac\u0103 exist\u0103), rotorul este rotit lent \u0219i eliberat. Paleta cea mai grea va c\u0103dea \u00een jos. Corec\u021bia se face prin ad\u0103ugarea de greut\u0103\u021bi mici (de exemplu, folosind band\u0103 adeziv\u0103 sau magne\u021bi) la cele mai u\u0219oare palete p\u00e2n\u0103 c\u00e2nd rotorul nu mai caut\u0103 nicio pozi\u021bie specific\u0103.<\/p>\n\n <h3>3.3. Echilibrarea dinamic\u0103 a c\u00e2mpului: abordare profesional\u0103<\/h3>\n \n <p>Aceasta este metoda principal\u0103 pentru industrie <strong>echilibrarea evacuarii<\/strong>, efectuat\u0103 cu ajutorul unor instrumente specializate, cum ar fi <strong>Balanset-1A<\/strong> f\u0103r\u0103 dezasamblarea echipamentului. Procesul const\u0103 \u00een mai mul\u021bi pa\u0219i obligatorii.<\/p>\n \n <h4>Pasul 1: M\u0103surarea ini\u021bial\u0103 (Rularea ini\u021bial\u0103)<\/h4>\n <ul>\n <li>Senzorii de vibra\u021bii sunt instala\u021bi pe carcasele rulmen\u021bilor, iar pe arbore este aplicat\u0103 o band\u0103 reflectorizant\u0103 pentru tahometru.<\/li>\n <li>Ventilatorul de evacuare este pornit \u0219i adus la tura\u021bia nominal\u0103 de func\u021bionare.<\/li>\n <li>Folosind un analizor de vibra\u021bii, se \u00eenregistreaz\u0103 datele ini\u021biale: amplitudinea (de obicei \u00een mm\/s) \u0219i unghiul de faz\u0103 (\u00een grade) ale vibra\u021biei la frecven\u021ba de func\u021bionare 1x. Aceste date reprezint\u0103 vectorul de dezechilibru ini\u021bial.<\/li>\n <\/ul>\n \n <h4>Pasul 2: Curs\u0103 de prob\u0103 cu greutatea<\/h4>\n <p><strong>Logic\u0103:<\/strong> Pentru ca instrumentul s\u0103 calculeze exact cum s\u0103 corecteze dezechilibrul, este necesar s\u0103 introduc\u0103 o modificare cunoscut\u0103 \u00een sistem \u0219i s\u0103 observe reac\u021bia acestuia. Acesta este scopul instal\u0103rii greut\u0103\u021bii de prob\u0103.<\/p>\n \n <ul>\n <li><strong>Selectarea masei \u0219i a loca\u021biei:<\/strong> Greutatea de prob\u0103 este aleas\u0103 astfel \u00eenc\u00e2t s\u0103 provoace o modificare vizibil\u0103, dar sigur\u0103, a vectorului de vibra\u021bie (de exemplu, modificarea amplitudinii de 20-30% \u0219i\/sau defazajul de 20-30\u00b0). Greutatea este ata\u0219at\u0103 temporar \u00een planul de corec\u021bie selectat, la o pozi\u021bie unghiular\u0103 cunoscut\u0103.<\/li>\n <li><strong>M\u0103surare:<\/strong> Repeta\u021bi pornirea \u0219i efectuarea m\u0103sur\u0103torilor, \u00eenregistr\u00e2nd noile valori ale amplitudinii \u0219i fazei.<\/li>\n <\/ul>\n \n <h4>Pasul 3: Calculul greut\u0103\u021bii corective \u0219i instalare<\/h4>\n <p>Instrumente moderne de echilibrare, cum ar fi <strong>Balanset-1A<\/strong> Efectueaz\u0103 automat sc\u0103derea vectorial\u0103 a vectorului de vibra\u021bie ini\u021bial din vectorul ob\u021binut cu greutatea de prob\u0103. Pe baza acestei diferen\u021be (vector de influen\u021b\u0103), instrumentul calculeaz\u0103 masa precis\u0103 \u0219i unghiul precis la care trebuie instalat\u0103 greutatea corectiv\u0103 permanent\u0103 pentru a compensa dezechilibrul ini\u021bial.<\/p>\n \n <p>Corec\u021bia se poate face fie prin ad\u0103ugarea de mas\u0103 (sudarea pl\u0103cilor metalice, instalarea \u0219uruburilor cu piuli\u021be), fie prin \u00eendep\u0103rtarea masei (g\u0103urirea, \u0219lefuirea). Ad\u0103ugarea de mas\u0103 este preferabil\u0103, deoarece este un proces reversibil \u0219i mai controlat.<\/p>\n \n <h4>Pasul 4: Verificare rulare \u0219i echilibrare ajustare<\/h4>\n <ul>\n <li>Dup\u0103 instalarea greut\u0103\u021bii corective permanente (\u0219i \u00eendep\u0103rtarea greut\u0103\u021bii de prob\u0103), se efectueaz\u0103 o verificare pentru a evalua rezultatul.<\/li>\n <li>Dac\u0103 nivelul vibra\u021biilor a sc\u0103zut, dar dep\u0103\u0219e\u0219te \u00een continuare standardele acceptabile, se efectueaz\u0103 echilibrarea. Procedura se repet\u0103, dar rezultatele verific\u0103rii sunt acum utilizate ca date ini\u021biale. Acest lucru permite o abordare iterativ\u0103, pas cu pas, a calit\u0103\u021bii echilibr\u0103rii necesare.<\/li>\n <\/ul>\n\n <h3>3.4. Echilibrare pe un singur plan sau pe dou\u0103 planuri? Criterii practice de selec\u021bie<\/h3>\n \n <p>Alegerea \u00eentre echilibrarea pe un singur plan \u0219i pe dou\u0103 planuri este o decizie cheie care afecteaz\u0103 succesul \u00eentregii proceduri, fiind deosebit de important\u0103 pentru <strong>echilibrarea evacuarii<\/strong> aplica\u021bii.<\/p>\n \n <h4>Criteriu principal: Raportul dintre lungimea rotorului (L) \u0219i diametrul (D).<\/h4>\n <ul>\n <li>Dac\u0103 L\/D < 0,5 \u0219i o vitez\u0103 de rota\u021bie mai mic\u0103 de 1000 RPM, de obicei domin\u0103 dezechilibrul static, fiind suficient\u0103 echilibrarea pe un singur plan.<\/li>\n <li>Dac\u0103 L\/D > 0,5 sau viteza de rota\u021bie este mare (>1000 RPM), dezechilibrul cuplului \u00eencepe s\u0103 joace un rol semnificativ, necesit\u00e2nd o echilibrare pe dou\u0103 planuri pentru eliminare.<\/li>\n <\/ul>\n \n <div class=\"tip\">\n <strong>Sfat practic:<\/strong> Dac\u0103 \u00een timpul echilibr\u0103rii pe un singur plan observa\u021bi o sc\u0103dere a vibra\u021biilor la un suport (unde se efectueaz\u0103 corec\u021bia), dar o cre\u0219tere semnificativ\u0103 la suportul opus, acesta este un semn clar al unei componente puternice de dezechilibru al cuplului. \u00cen acest caz, opri\u021bi imediat \u00eencerc\u0103rile de corec\u021bie pe un singur plan \u0219i trece\u021bi la echilibrarea pe dou\u0103 planuri.\n <\/div>\n\n <h3>3.5. Particularit\u0103\u021bi ale echilibr\u0103rii ventilatorului suspendat \u00een consol\u0103<\/h3>\n \n <p>Ventilatoarele de evacuare de tip suspendat, \u00een care roata de lucru (rotorul) este amplasat\u0103 dincolo de suporturile lag\u0103relor, prezint\u0103 o complexitate deosebit\u0103 pentru echilibrare.<\/p>\n \n <p><strong>Problem\u0103:<\/strong> Astfel de sisteme sunt inerent instabile dinamic \u0219i extrem de sensibile la dezechilibru, \u00een special la cele de tip cuplu. Acest lucru se manifest\u0103 adesea prin vibra\u021bii axiale anormal de mari.<\/p>\n \n <p><strong>Complica\u021bii:<\/strong> Aplicarea metodelor standard pe dou\u0103 planuri la rotoarele suspendate duce adesea la rezultate nesatisf\u0103c\u0103toare sau necesit\u0103 instalarea unor greut\u0103\u021bi corective insuficient de mari. Reac\u021bia sistemului la greutatea de prob\u0103 poate fi neintuitiv\u0103: de exemplu, instalarea greut\u0103\u021bii pe rotor poate provoca o modificare mai mare a vibra\u021biilor la suportul \u00eendep\u0103rtat (la motor) dec\u00e2t la cel apropiat.<\/p>\n \n <p><strong>Recomand\u0103ri:<\/strong> Echilibrarea ventilatorului de evacuare suspendat necesit\u0103 o experien\u021b\u0103 specializat\u0103 mai vast\u0103 \u0219i o \u00een\u021belegere mai bun\u0103 a dinamicii. Adesea este necesar\u0103 utilizarea de module software specializate \u00een analizoarele de vibra\u021bii care aplic\u0103 metoda de separare a for\u021bei statice\/de cuplu pentru un calcul mai precis al masei corective.<\/p>\n\n <h2>Sec\u021biunea 4: Cazuri complexe \u0219i tehnici profesionale<\/h2>\n \n <p>Chiar \u0219i cu respectarea strict\u0103 a procedurilor, speciali\u0219tii pot \u00eent\u00e2lni situa\u021bii \u00een care abord\u0103rile standard nu dau rezultate. Aceste cazuri necesit\u0103 o analiz\u0103 mai profund\u0103 \u0219i aplicarea unor tehnici non-standard.<\/p>\n\n <h3>4.1. Gre\u0219eli tipice \u0219i cum s\u0103 le evi\u021bi<\/h3>\n \n <h4>Gre\u0219eala 1: Diagnostic incorect<\/h4>\n <p>Cea mai frecvent\u0103 \u0219i costisitoare gre\u0219eal\u0103 - \u00eencercarea de a echilibra vibra\u021biile cauzate de nealiniere, sl\u0103bire mecanic\u0103 sau rezonan\u021b\u0103.<\/p>\n <p><strong>Solu\u021bie:<\/strong> \u00cencepe\u021bi \u00eentotdeauna cu o analiz\u0103 complet\u0103 a vibra\u021biilor (analiza spectrului \u0219i a fazei). Dac\u0103 spectrul nu prezint\u0103 o dominan\u021b\u0103 clar\u0103 a v\u00e2rfurilor 1x, dar sunt prezente v\u00e2rfuri semnificative la alte frecven\u021be, echilibrarea nu poate \u00eencepe p\u00e2n\u0103 la eliminarea cauzei principale.<\/p>\n \n <h4>Gre\u0219eala 2: Ignorarea etapei preg\u0103titoare<\/h4>\n <p>Omiterea etapelor de cur\u0103\u021bare a rotorului sau de verificare a str\u00e2ngerii conexiunilor cu \u0219uruburi.<\/p>\n <p><strong>Solu\u021bie:<\/strong> Respecta\u021bi cu stricte\u021be \u201eierarhia interven\u021biilor\u201d descris\u0103 \u00een sec\u021biunea 3.1. Cur\u0103\u021barea \u0219i str\u00e2ngerea nu sunt op\u021biuni, ci primi pa\u0219i obligatorii.<\/p>\n \n <h4>Gre\u0219eala 3: \u00cendep\u0103rtarea tuturor greut\u0103\u021bilor vechi de echilibrare<\/h4>\n <p>Aceast\u0103 ac\u021biune distruge rezultatele echilibr\u0103rii anterioare (posibil din fabric\u0103) \u0219i adesea complic\u0103 semnificativ lucrarea, deoarece dezechilibrul ini\u021bial poate deveni foarte mare.<\/p>\n <p><strong>Solu\u021bie:<\/strong> Nu \u00eendep\u0103rta\u021bi niciodat\u0103 toate greut\u0103\u021bile f\u0103r\u0103 un motiv \u00eentemeiat. Dac\u0103 rotorul a acumulat multe greut\u0103\u021bi mici din echilibr\u0103rile anterioare, acestea pot fi \u00eendep\u0103rtate, dar apoi combina\u021bi suma vectorial\u0103 a acestora \u00eentr-o singur\u0103 greutate echivalent\u0103 \u0219i instala\u021bi-o la locul ei.<\/p>\n \n <h4>Gre\u0219eala 4: Neverificarea repetabilit\u0103\u021bii datelor<\/h4>\n <p>\u00cenceperea echilibr\u0103rii cu citiri ini\u021biale instabile ale amplitudinii \u0219i fazei.<\/p>\n <p><strong>Solu\u021bie:<\/strong> \u00cenainte de instalarea greut\u0103\u021bii de prob\u0103, efectua\u021bi 2-3 porniri de control. Dac\u0103 amplitudinea sau faza \u201eplute\u0219te\u201d de la \u00eenceput la \u00eenceput, aceasta indic\u0103 prezen\u021ba unei probleme mai complexe (rezonan\u021b\u0103, curbur\u0103 termic\u0103, instabilitate aerodinamic\u0103). Echilibrarea \u00een astfel de condi\u021bii nu va da un rezultat stabil.<\/p>\n\n <h3>4.2. Echilibrarea \u00een apropierea rezonan\u021bei: c\u00e2nd exist\u0103 faz\u0103<\/h3>\n \n <p><strong>Problem\u0103:<\/strong> C\u00e2nd viteza de func\u021bionare a ventilatorului de evacuare este foarte apropiat\u0103 de una dintre frecven\u021bele naturale de vibra\u021bie ale sistemului (rezonan\u021b\u0103), unghiul de faz\u0103 devine extrem de instabil \u0219i foarte sensibil la cele mai mici fluctua\u021bii de vitez\u0103. Acest lucru face ca calculele vectoriale standard bazate pe m\u0103surarea fazei s\u0103 fie inexacte sau complet imposibile.<\/p>\n \n <p><strong>Solu\u021bie: Metoda cu patru runde<\/strong><\/p>\n <p><strong>Esen\u0163\u0103:<\/strong> Aceast\u0103 metod\u0103 unic\u0103 de echilibrare nu utilizeaz\u0103 m\u0103sur\u0103tori de faz\u0103. Calculul corectiv al greut\u0103\u021bii se efectueaz\u0103 exclusiv pe baza modific\u0103rilor amplitudinii vibra\u021biilor.<\/p>\n \n <p><strong>Proces:<\/strong> Metoda necesit\u0103 patru rul\u0103ri secven\u021biale:<\/p>\n <ol>\n <li>M\u0103sura\u021bi amplitudinea ini\u021bial\u0103 a vibra\u021biei<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu greutatea de prob\u0103 instalat\u0103 \u00een pozi\u021bia condi\u021bionat\u0103 de 0\u00b0<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu aceea\u0219i greutate mutat\u0103 la 120\u00b0<\/li>\n <li>M\u0103sura\u021bi amplitudinea cu aceea\u0219i greutate mutat\u0103 la 240\u00b0<\/li>\n <\/ol>\n \n <p>Pe baza celor patru valori ale amplitudinii ob\u021binute, se construie\u0219te solu\u021bia grafic\u0103 (metoda intersec\u021biei cercurilor) sau se efectueaz\u0103 un calcul matematic, permi\u021b\u00e2nd determinarea masei necesare \u0219i a unghiului de instalare a greut\u0103\u021bii corective.<\/p>\n\n <h3>4.3. C\u00e2nd problema nu este echilibru: for\u021be structurale \u0219i aerodinamice<\/h3>\n \n <h4>Probleme structurale:<\/h4>\n <p>Funda\u021biile slabe sau cr\u0103pate, suporturile sl\u0103bite pot rezona cu frecven\u021ba de func\u021bionare a ventilatorului de evacuare, multiplic\u00e2nd vibra\u021biile de nenum\u0103rate ori.<\/p>\n <p><strong>Diagnostic:<\/strong> Pentru a determina frecven\u021bele naturale structurale \u00een stare inactiv\u0103, se aplic\u0103 testul de impact (testul de lovire). Acesta se efectueaz\u0103 folosind un ciocan modal special \u0219i un accelerometru. Dac\u0103 una dintre frecven\u021bele naturale g\u0103site este apropiat\u0103 de frecven\u021ba de rota\u021bie de func\u021bionare, problema este \u00eentr-adev\u0103r rezonan\u021ba.<\/p>\n \n <h4>For\u021be aerodinamice:<\/h4>\n <p>Turbulen\u021bele fluxului de aer la intrare (datorit\u0103 obstacolelor sau clapetei excesiv \u00eenchise, a\u0219a-numita \u201e\u00eenfometare a ventilatorului\u201d) sau la ie\u0219ire pot provoca vibra\u021bii de joas\u0103 frecven\u021b\u0103, adesea instabile, care nu au leg\u0103tur\u0103 cu dezechilibrul de mas\u0103.<\/p>\n <p><strong>Diagnostic:<\/strong> Se efectueaz\u0103 un test cu modificarea sarcinii aerodinamice la o vitez\u0103 de rota\u021bie constant\u0103 (de exemplu, prin deschiderea\/\u00eenchiderea treptat\u0103 a amortizorului). Dac\u0103 nivelul vibra\u021biilor se modific\u0103 semnificativ, natura acestora este probabil aerodinamic\u0103.<\/p>\n\n <h3>4.4. Analiza unui exemplu real (studii de caz)<\/h3>\n \n <h4>Exemplul 1 (Rezonan\u021b\u0103):<\/h4>\n <p>\u00centr-un caz documentat, echilibrarea ventilatorului de alimentare folosind metoda standard nu a dat rezultate din cauza citirilor de faz\u0103 extrem de instabile. Analiza a ar\u0103tat c\u0103 viteza de func\u021bionare (29 Hz) a fost foarte apropiat\u0103 de frecven\u021ba natural\u0103 a rotorului (28 Hz). Aplicarea metodei cu patru runde, independent\u0103 de faz\u0103, a permis reducerea cu succes a vibra\u021biilor la un nivel acceptabil, oferind o solu\u021bie temporar\u0103 p\u00e2n\u0103 la \u00eenlocuirea ventilatorului cu unul mai fiabil.<\/p>\n \n <h4>Exemplul 2 (Defecte multiple):<\/h4>\n <p>Analiza vibra\u021biilor ventilatoarelor de evacuare de la fabrica de zah\u0103r a relevat probleme complexe. Un spectru al ventilatorului a indicat o nealiniere unghiular\u0103 (v\u00e2rfuri mari de 1x \u0219i 2x \u00een direc\u021bie axial\u0103), \u00een timp ce altul a ar\u0103tat sl\u0103bire mecanic\u0103 (armonice uniforme 1x, 2x, 3x). Acest lucru demonstreaz\u0103 importan\u021ba elimin\u0103rii secven\u021biale a defectelor: mai \u00eent\u00e2i s-au efectuat alinierea \u0219i str\u00e2ngerea elementelor de fixare, iar abia apoi, dac\u0103 este necesar, s-a efectuat echilibrarea.<\/p>\n\n <h2>Sec\u021biunea 5: Standarde, toleran\u021be \u0219i \u00eentre\u021binere preventiv\u0103<\/h2>\n \n <p>Etapa final\u0103 a oric\u0103rei lucr\u0103ri tehnice este evaluarea calit\u0103\u021bii acesteia \u00een conformitate cu cerin\u021bele de reglementare \u0219i dezvoltarea unei strategii pentru men\u021binerea echipamentelor \u00een stare corespunz\u0103toare pe termen lung.<\/p>\n\n <h3>5.1. Prezentare general\u0103 a standardelor cheie (ISO)<\/h3>\n \n <p>Mai multe standarde interna\u021bionale sunt utilizate pentru evaluarea calit\u0103\u021bii echilibr\u0103rii \u0219i a st\u0103rii de vibra\u021bii a ventilatoarelor de evacuare.<\/p>\n \n <h4>ISO 14694:2003:<\/h4>\n <p>Standardul principal pentru ventilatoarele industriale. Stabile\u0219te cerin\u021be pentru calitatea echilibr\u0103rii \u0219i nivelurile maxime admise de vibra\u021bii \u00een func\u021bie de categoria de aplica\u021bie a ventilatorului (BV-1, BV-2, BV-3 etc.), putere \u0219i tipul de instalare.<\/p>\n \n <h4>ISO 1940-1:2003:<\/h4>\n <p>Acest standard define\u0219te gradele de calitate a echilibr\u0103rii (G) pentru rotoarele rigide. Gradul de calitate caracterizeaz\u0103 dezechilibrul rezidual admis. Pentru majoritatea ventilatoarelor industriale de evacuare, se aplic\u0103 urm\u0103toarele grade:<\/p>\n <ul>\n <li><strong>G6.3:<\/strong> Calitate industrial\u0103 standard, potrivit\u0103 pentru majoritatea aplica\u021biilor industriale generale.<\/li>\n <li><strong>G2.5:<\/strong> Calitate \u00eembun\u0103t\u0103\u021bit\u0103, necesar\u0103 pentru ventilatoarele de evacuare de mare vitez\u0103 sau deosebit de critice, unde cerin\u021bele privind vibra\u021biile sunt mai stricte.<\/li>\n <\/ul>\n \n <h4>ISO 10816-3:2009:<\/h4>\n <p>Regleaz\u0103 evaluarea st\u0103rii de vibra\u021bii a ma\u0219inilor industriale pe baza m\u0103sur\u0103torilor efectuate pe piesele nerotative (de exemplu, carcasele rulmen\u021bilor). Standardul introduce patru zone de condi\u021bie:<\/p>\n <ul>\n <li><strong>Zona A:<\/strong> \u201eBun\u201d (echipament nou)<\/li>\n <li><strong>Zona B:<\/strong> \u201eSatisf\u0103c\u0103tor\u201d (func\u021bionare nelimitat\u0103 permis\u0103)<\/li>\n <li><strong>Zona C:<\/strong> \u201eAcceptabil pentru o perioad\u0103 limitat\u0103 de timp\u201d (este necesar\u0103 identificarea \u0219i eliminarea cauzei)<\/li>\n <li><strong>Zona D:<\/strong> \u201eInacceptabil\u201d (vibra\u021biile pot provoca daune)<\/li>\n <\/ul>\n \n <h4>ISO 14695:2003:<\/h4>\n <p>Acest standard stabile\u0219te metode \u0219i condi\u021bii unificate pentru m\u0103sur\u0103torile vibra\u021biilor ventilatoarelor industriale, necesare pentru asigurarea comparabilit\u0103\u021bii \u0219i reproductibilit\u0103\u021bii rezultatelor ob\u021binute la momente diferite \u0219i pe echipamente diferite.<\/p>\n\n <h3>5.2. Strategie pe termen lung: Integrare \u00een programul de mentenan\u021b\u0103 predictiv\u0103<\/h3>\n \n <p><strong>Echilibrarea evacuarii<\/strong> nu ar trebui considerat\u0103 o opera\u021biune de repara\u021bie unic\u0103. Este o parte integrant\u0103 a strategiei moderne de mentenan\u021b\u0103 predictiv\u0103.<\/p>\n \n <p>Implementarea monitoriz\u0103rii regulate a vibra\u021biilor (de exemplu, prin colectarea datelor de traseu folosind analizoare portabile) permite urm\u0103rirea st\u0103rii echipamentelor \u00een timp. Analiza tendin\u021belor, \u00een special cre\u0219terea treptat\u0103 a amplitudinii vibra\u021biilor la frecven\u021ba de func\u021bionare 1x, este un indicator fiabil al dezvolt\u0103rii dezechilibrului.<\/p>\n \n <p>Aceast\u0103 abordare permite:<\/p>\n <ul>\n <li>Planificarea echilibr\u0103rii \u00een avans, \u00eenainte ca nivelul vibra\u021biilor s\u0103 ating\u0103 valorile critice stabilite de standardul ISO 10816-3.<\/li>\n <li>Prevenirea deterior\u0103rii secundare a rulmen\u021bilor, cuplajelor \u0219i structurilor de sus\u021binere care apar inevitabil \u00een timpul func\u021bion\u0103rii prelungite cu vibra\u021bii excesive.<\/li>\n <li>Eliminarea timpilor de nefunc\u021bionare neplanifica\u021bi \u00een caz de urgen\u021b\u0103 prin transformarea lucr\u0103rilor de repara\u021bii \u00een categoria lucr\u0103rilor preventive planificate.<\/li>\n <\/ul>\n \n <p>Crearea unei baze de date electronice cu principalele st\u0103ri de vibra\u021bii ale echipamentelor \u0219i analiza regulat\u0103 a tendin\u021belor formeaz\u0103 baza pentru luarea unor decizii de \u00eentre\u021binere solide din punct de vedere tehnic \u0219i eficiente din punct de vedere economic, cresc\u00e2nd \u00een cele din urm\u0103 fiabilitatea \u0219i eficien\u021ba general\u0103 a produc\u021biei.<\/p>\n\n <div class=\"warning\">\n <strong>Concluzie:<\/strong> Profesional <strong>echilibrarea evacuarii<\/strong> folosind echipamente moderne precum <strong>Balanset-1A<\/strong> necesit\u0103 o abordare sistematic\u0103 care combin\u0103 cuno\u0219tin\u021be teoretice, abilit\u0103\u021bi practice \u0219i proceduri de diagnostic adecvate. 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