介绍了采用振动诊断技术,对机车牵引电机轴承故障进行动态检测的方法。利用简易诊断法可判断电机轴承有无异常,而精密诊断法则进一步判断电机轴承发生故障的部位,借助诊断分析系统,对所测信号进行频谱分析,根据电机轴承不同部位故障的特征频率,确定故障程度和部位,以便及时采取防范措施。 This paper introduces the method of using vibration diagnosis technology to dynamically detect bearing faults of locomotive traction motor. The use of simple diagnostic method to determine whether the motor bearing anomalies, and precision diagnosis rules to further determine the motor bearing failure of the site, with the aid of diagnostic analysis system, the measured signal spectrum analysis, according to different parts of the motor bearing fault frequency to determine the fault Extent and location, in order to take timely preventive measures.