Brezplačno inženirsko orodje
Kalkulator za načrtovanje uravnotežene platforme
Zasnujte uravnoteženo platformo (mehko oporo) za uravnoteženje rotorja. Izračunajte potrebno togost vzmeti, naravno frekvenco, statični odklon in prenosljivost.
Rezultati
Lastna frekvenca platforme
Lastna frekvenca sistema masa-vzmet platforme:
Kje mskupaj = mrotor + mplatforma in kskupaj je skupna togost vseh vzmeti (N/m).
Zahtevana togost na vzmet
Kje n je število vzmeti in ftarča = vrtljaji na minuto/60 × razmerje (npr. ×1/3).
Prenosljivost
Nedvoumna prenosljivost pri delovni hitrosti:
Za dobre pogoje uravnoteženja mora biti T manjši od 15%. Frekvenčno razmerje 3 daje T ≈ 12,5%.
Statični odklon
Praktični primer
Dano: mrotor = 80 kg, mplatforma = 15 kg, 1800 vrt/min, 4 vzmeti, prestavno razmerje 1/3
mskupaj = 95 kg, žop = 30 Hz, ftarča = 10 Hz
kskupaj = 95 × (2π×10)² = 375.055 N/m = 375,1 N/mm
kna vzmet = 375.1 / 4 = 93,8 N/mm
δstatični = 95 × 9,81 / 375.055 × 1000 = 2,49 mm
T = 1/(3²-1) = 12.5%
⚠️ Opomba: Prepričajte se, da imajo vse vzmeti enako togost in da je obremenitev centrirana. Neenakomeren odklon povzroči nagibanje, kar popači odčitke vibracij med uravnoteženjem.
A balancing platform (soft support) is a simple structure — typically a steel frame or plate — mounted on springs. It supports a rotor for field balancing by allowing free vibration response at operating speed. The platform's natural frequency is tuned well below operating speed (typically ≤ 1/3).
The natural frequency must be well below operating speed to ensure the system operates in the isolation region — above the resonance peak. At a frequency ratio of 3, transmissibility drops to about 12.5%, meaning the rotor vibrates freely and the balancing instrument can accurately detect unbalance.
Common configurations:
- 4 springs — most common, one at each corner
- 2 springs — small, lightweight rotors
- 3 springs — triangular platforms
- 6–8 springs — large, heavy rotors
All springs must have equal stiffness and the load must be centered.
Welded steel frame or plate (10–20 mm thick) is most common. Aluminum for smaller rotors. Platform mass is typically 10–25% of rotor mass. Ensure the platform is flat and all spring mounting points are at equal height.
Yes, but rubber mounts have higher damping (reducing measurement precision), and stiffness varies with temperature and load history. Coil springs are preferred for their consistent, well-defined stiffness and low damping. Dynamic rubber stiffness is typically 1.3–2× higher than static stiffness.
Postopki, opisani na tej strani, so bili razviti in terensko preizkušeni s strani ekipe Vibromera z uporabo naprave Balanset-1A, prenosnega dvokanalnega uravnoteževalnika in analizatorja vibracij za uravnoteženje rotorjev na mestu uporabe.
Profesionalni instrumenti in programska oprema za uravnoteženje na terenu. Zasnujte svojo platformo za uravnoteženje in preverite rezultate z našimi prenosnimi uravnoteževalniki. Uporabljajo se v več kot 50 državah.
