为及时发现和准确诊断轨道交通机车车辆走行部轴承保持架故障,对轴承保持架变形故障的信息产生机理进行了分析,对走行部车载监测装置采集的数据进行了基于冲击信息的特征提取与故障模式识别方法研究,提出了通过联合轴承保持架故障特征谱与外孤谱的保持架变形识别方法。实践证明,该方法对轨道交通机车车辆走行部轴承保持架的故障诊断具有实际的工程应用价值。 In order to detect and diagnose the failure of the bearing cage of the running gear of the rail transit locomotive in time, the information generating mechanism of the deformation of the bearing cage was analyzed. The data collected from the on-board monitoring device of the running gear were extracted based on the impact information and the fault The research on pattern recognition method has proposed a method of identifying the deformation of the cage through the joint bearing cage failure characteristic spectrum and the external solitary spectrum. Practice has proved that this method has practical engineering application value for the fault diagnosis of the bearing cage of the running gear of the rail transit locomotive.