汽车后桥主减速器齿轮啮合故障诊断研究

Fault Detection of Main Reducer Gear Engagement on Automobile Rear Axle

通过主减速器齿轮配对机对主减速器齿轮啮合的振动进行监测,利用Matlab对振动信号进行分析,先采用时域分析法从宏观角度判断主减速器齿轮是否存在故障,然后采用频域分析法通过对齿轮故障频率的识别与遴选,进一步判断主减速器齿轮的故障类型,识别主减速器故障,该方法具有可行性和可靠性。

The mashing vibration of main reducer gear was monitored by gear matching machine, and the vibration signals were analyzed by Matlab. Firstly, the time domain analysis was employed to identify whether there is a fault or not in main reduc- tion gear in macroscopic view. Then the frequency domain analysis was conducted to determine the main reduction gear fault type through the identification and selection of gear failure frequency. The method is feasible and reliable.