{"id":567,"date":"2015-06-13T21:14:17","date_gmt":"2015-06-13T21:14:17","guid":{"rendered":"https:\/\/vibromera.eu\/?p=567"},"modified":"2025-03-05T20:33:26","modified_gmt":"2025-03-05T20:33:26","slug":"mulcovac-rotor-vyvazovani-5","status":"publish","type":"post","link":"https:\/\/vibromera.eu\/cs\/example\/mulcher-rotor-balancing-5\/","title":{"rendered":"Vyv\u00e1\u017een\u00ed rotoru mul\u010dova\u010de"},"content":{"rendered":"
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    \n\t\t\t\t\t\t\"Vyva\u017eov\u00e1n\u00ed\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/li>\n\t\t<\/ul>\t\t\t\t
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    1. <\/a><\/li>\n\t\t\t\t\t\t\t\t\t<\/ol>\n\n\t\t\t\t
      \n\t\t\t\t\t\n\t\t\t\t\t\t<\/em>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t
      \n\t\t\t\t\t\n\t\t\t\t\t\t<\/em>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div>

      Vyva\u017eov\u00e1n\u00ed rotor\u016f lesn\u00edch mul\u010dova\u010d\u016f: Kl\u00ed\u010d k efektivn\u00edmu provozu<\/h1>\n

      Lesn\u00ed mul\u010dova\u010de jsou v\u00fdkonn\u00e9 stroje ur\u010den\u00e9 k drcen\u00ed vegetace a vytv\u00e1\u0159en\u00ed protipo\u017e\u00e1rn\u00edch p\u00e1s\u016f. Srdcem mul\u010dova\u010de je rotor vybaven\u00fd speci\u00e1ln\u00edmi no\u017ei nebo zuby, kter\u00e9 se ot\u00e1\u010dej\u00ed vysokou rychlost\u00ed a rozm\u011bl\u0148uj\u00ed stromy a ke\u0159e. V d\u016fsledku intenzivn\u00edho pou\u017e\u00edv\u00e1n\u00ed a vn\u011bj\u0161\u00edch faktor\u016f v\u0161ak m\u016f\u017ee doj\u00edt k nevyv\u00e1\u017eenosti rotoru, co\u017e vede k vibrac\u00edm.<\/p>\n \n

      Co je nevyv\u00e1\u017eenost?<\/h2>\n

      Nevyv\u00e1\u017eenost je stav, kdy je hmotnost rotoru nerovnom\u011brn\u011b rozlo\u017eena vzhledem k jeho ose ot\u00e1\u010den\u00ed. To m\u00e1 za n\u00e1sledek vznik odst\u0159ediv\u00fdch sil, kter\u00e9 zp\u016fsobuj\u00ed ne\u017e\u00e1douc\u00ed vibrace. Vibrace zase mohou v\u00e9st ke zrychlen\u00e9mu opot\u0159eben\u00ed lo\u017eisek, po\u0161kozen\u00ed ostatn\u00edch sou\u010d\u00e1st\u00ed mul\u010dova\u010de, sn\u00ed\u017een\u00ed \u00fa\u010dinnosti a dokonce k poruch\u00e1m.<\/p>\n

      Existuj\u00ed dva hlavn\u00ed typy nevyv\u00e1\u017eenosti: statick\u00e1 a dynamick\u00e1.<\/p>\n \n

      Statick\u00e1 nevyv\u00e1\u017eenost<\/h3>\n

      Statick\u00e1 nevyv\u00e1\u017eenost vznik\u00e1, kdy\u017e je t\u011b\u017ei\u0161t\u011b rotoru posunuto od jeho osy ot\u00e1\u010den\u00ed. To zp\u016fsobuje, \u017ee rotor hled\u00e1 polohu, ve kter\u00e9 je jeho t\u011b\u017e\u0161\u00ed \u010d\u00e1st dole. Statickou nevyv\u00e1\u017eenost lze zjistit, i kdy\u017e se rotor neto\u010d\u00ed.<\/p>\n\n

      \"P\u0159\u00edklad<\/a>

      P\u0159\u00edklad rotoru se statickou nevyv\u00e1\u017eenost\u00ed je uveden na obr. 2.<\/p><\/div>\n \n

      Dynamick\u00e1 nevyv\u00e1\u017eenost<\/h3>\n

      Dynamick\u00e1 nevyv\u00e1\u017eenost vznik\u00e1 nerovnom\u011brn\u00fdm rozlo\u017een\u00edm hmotnosti po cel\u00e9 d\u00e9lce rotoru. V takov\u00e9m p\u0159\u00edpad\u011b vznikaj\u00ed p\u0159i ot\u00e1\u010den\u00ed s\u00edly a momenty, kter\u00e9 zp\u016fsobuj\u00ed dal\u0161\u00ed vibrace. Dynamick\u00e1 nevyv\u00e1\u017eenost se projevuje pouze p\u0159i ot\u00e1\u010den\u00ed rotoru.<\/p>\n

      \"Dynamick\u00e1<\/a>

      Dynamick\u00e1 nevyv\u00e1\u017eenost rotoru - dvojice odst\u0159ediv\u00fdch sil<\/p><\/div>\n \n

      Pro\u010d nelze dynamickou nevyv\u00e1\u017eenost napravit bez vybaven\u00ed?<\/h2>\n

      Mnoho mechanik\u016f a provozovatel\u016f se sna\u017e\u00ed odstranit nevyv\u00e1\u017eenost \"od oka\" p\u0159id\u00e1n\u00edm nebo odebr\u00e1n\u00edm z\u00e1va\u017e\u00ed na rotoru bez pou\u017eit\u00ed specializovan\u00e9ho vybaven\u00ed. Tento p\u0159\u00edstup je v\u0161ak \u00fa\u010dinn\u00fd pouze v p\u0159\u00edpad\u011b statick\u00e9 nevyv\u00e1\u017eenosti. U dynamick\u00e9 nevyv\u00e1\u017eenosti, kde jsou t\u011b\u017ek\u00e9 body v r\u016fzn\u00fdch rovin\u00e1ch rotoru, je t\u00e9m\u011b\u0159 nemo\u017en\u00e9 vizu\u00e1ln\u011b ur\u010dit jejich polohu a pot\u0159ebnou korekci hmotnosti.<\/p>\n

      K odstran\u011bn\u00ed dynamick\u00e9 nevyv\u00e1\u017eenosti je zapot\u0159eb\u00ed specializovan\u00e9 za\u0159\u00edzen\u00ed - p\u0159enosn\u00e9 vyva\u017eovac\u00ed p\u0159\u00edstroje, kter\u00e9 dok\u00e1\u017e\u00ed p\u0159esn\u011b zm\u011b\u0159it amplitudu a f\u00e1zi vibrac\u00ed a vypo\u010d\u00edtat pot\u0159ebn\u00e1 korek\u010dn\u00ed z\u00e1va\u017e\u00ed a m\u00edsta jejich instalace.<\/p>\n \n

      Nev\u00fdhody zv\u00fd\u0161en\u00fdch vibrac\u00ed<\/h2>\n

      Zv\u00fd\u0161en\u00e9 vibrace rotoru mohou m\u00edt n\u011bkolik negativn\u00edch d\u016fsledk\u016f:<\/p>\n

        \n
      • Zrychlen\u00e9 opot\u0159eben\u00ed lo\u017eisek, h\u0159\u00eddele, sk\u0159\u00edn\u011b a dal\u0161\u00edch sou\u010d\u00e1st\u00ed.<\/li>\n
      • Po\u0161kozen\u00ed hydraulick\u00e9ho syst\u00e9mu a motoru traktoru<\/li>\n
      • Sn\u00ed\u017een\u00e1 produktivita a zv\u00fd\u0161en\u00e1 spot\u0159eba paliva<\/li>\n
      • \u0160patn\u00e9 pracovn\u00ed podm\u00ednky pro obsluhu, zv\u00fd\u0161en\u00e1 \u00fanava a riziko nemoc\u00ed z povol\u00e1n\u00ed.<\/li>\n
      • Zv\u00fd\u0161en\u00e9 riziko nehod<\/li>\n <\/ul>\n \n

        Poln\u00ed vyva\u017eov\u00e1n\u00ed: \u00daspora \u010dasu a pen\u011bz<\/h2>\n

        Vyv\u00e1\u017een\u00ed rotoru mul\u010dova\u010de v ter\u00e9nu pomoc\u00ed p\u0159enosn\u00e9ho vyva\u017eovac\u00edho za\u0159\u00edzen\u00ed je efektivn\u00edm \u0159e\u0161en\u00edm, kter\u00e9 zamezuje n\u00e1kladn\u00e9mu procesu demont\u00e1\u017ee, p\u0159epravy a op\u011btovn\u00e9 mont\u00e1\u017ee za\u0159\u00edzen\u00ed. M\u016f\u017eete rychle odstranit nevyv\u00e1\u017een\u00ed a pokra\u010dovat v pr\u00e1ci, \u010d\u00edm\u017e minimalizujete prostoje a u\u0161et\u0159\u00edte \u010das i pen\u00edze.<\/p>\n \n

        Proces vyva\u017eov\u00e1n\u00ed krok za krokem pomoc\u00ed Balanset-1A<\/h3>\n