关键词: 浮动式齿圈, 行星齿轮变速箱, 振动检测, 频谱模型, 故障诊断

Abstract: A thorough research for spectral structure of gearbox vibration signal had great help to the fault diagnosis of gearbox.But so far,there was no relevant research on the spectral structure of the planetary gearbox with floating gear ring.Aiming at the characteristics of transmission structure of planetary gearbox with floating ring gear,effect of vibration signal transmission path on vibration spectral structure of gearbox was researched,and the vibration spectral models for gear fault of planetary gearboxes with floating ring gear were proposed.Envelope spectrum analysis method was used to study the gearbox fault vibration signal amplitude modulation,which simplified the gearbox fault diagnosis.Fault diagnosis test was carried out by using the proposed spectral models,and the fault in the transmission was found accurately.

Key words: floating gear ring, planetary gearbox, vibration detection, spectral models, fault diagnosis