机车牵引电机轴承保持架振动特性研究  

Research on Vibration Performance for Bearing Cage of Locomotive Traction Motor

作　　者：袁少宁 刘志明[1] YUAN Shaoning;LIU Zhiming(School of Mechanical and Electronic Control Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《铁道机车车辆》2022年第6期9-17,共9页Railway Locomotive & Car

基　　金：国铁集团科技研发项目(P2019J001)。

摘　　要：保持架异常振动是造成保持架断裂失效的主要原因之一。针对机车牵引电机传动端圆柱滚子轴承,基于ADAMS建立了动力学仿真模型,采用GSTIFF变步长积分算法进行求解,分析了不同电机工况、轴承径向间隙和保持架兜孔间隙对保持架振动特性的影响。结果表明:在电机最高转速工况下,保持架打滑严重,振动较为剧烈;当轴承径向间隙减小时,保持架打滑和振动减弱,运动稳定性提高;随着保持架兜孔间隙减小,保持架打滑略有减弱,但振动增强。研究结果可为机车牵引电机轴承的设计提供理论依据。The abnormal vibration of the cage is one of the main reasons for the fracture failure of the cage.Aiming at the cylindrical roller bearing at the driving end of locomotive traction motor,the dynamic simulation model is established based on ADAMS and the GSTIFF variable step length integral algorithm is adopted to solve the problem.The influence of different motor working conditions,bearing radial clearance and cage pocket clearance on cage vibration performance is analyzed.The results show that the cage slips seriously and the vibration is severe under the condition of the highest motor speed;when the bearing radial clearance decreases,the slippage and vibration of cage are weakened,and the stability of motion is improved;with the decrease of the cage pocket clearance,the slippage of cage decreases slightly,but the vibration increases obviously.The research results can provide a theoretical basis for the design of locomotive traction motor bearing.

关 键 词：机车 牵引电机 圆柱滚子轴承 保持架 振动特性 

分 类 号：U260.4[机械工程—车辆工程]