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。
This paper introduces the dynamic te sting method for the faults of traction motor bearings of electric loco-motive by using vibrating diagnosis.
牵引齿轮磨损产生的齿形偏差使得牵引构轮和牵引电机振动加剧，噪声增大，齿根应力大幅度增大。
The tooth shape deviation in the worn traction gear will increase the vibration of traction gear and traction motor, increase the noise and increase by large scale the dedendum stress.
因此，需合理选取牵引电机吊挂关节的刚度，避免基于电机点头振动固有频率及各结构部件固有频率的振动。
Therefore, it needs to select the motor hanging rubber stiffness reasonably to avoid resonances of the structure of the driving gear.
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