近年来,多个城市地铁车辆通过整车公路运输后牵引电机均出现不同程度的异响,拆解电机后发现电机轴承滚道表面经过整车公路运输后留下了深浅不一的轴向压痕。本文通过分析牵引电机轴承在整车公路运输过程中的受力情况进而分析电机异响的原因。最后根据原因分析对牵引电机在整车公路运输过程中的防护提出建议。 In recent years, many city subway vehicles through the vehicle after the road transport motor traction were different levels of abnormal sound, dismantling the motor found that the motor bearing raceway surface after the vehicle road transport left a depth of varying axial compression mark. In this paper, by analyzing the traction motor bearings in the vehicle during the road transport stress analysis of the reasons for the motor noise. Finally, according to the reasons for the analysis of the traction motor vehicle road transport in the protection of recommendations.