高速动车组列车轴箱轴承振动监测与故障分析

Vibration Monitoring and Failure Analysis of the Axle Box Bearings for High-Speed EMU

摘要: 轴箱轴承作为高速动车组列车的关键零部件，其性能以及其故障的发生直接影响着列车的运行安全，因此对高速动车组列车轴箱轴承的运行状态监测，并对其发生的故障进行准确分析和预测具有重要意义。本文针对高速动车组列车轴箱轴承振动监测与故障分析需求，设计搭建轴承振动监测系统，并在高速动车组列车试验台上进行轴承振动测试实验，并采用时频域对振动数据分析，有效诊断出故障轴承，本文所搭建的列车轴箱轴承振动监测系统为在高速动车组列车的装车提供技术支撑，为列车安全运行提供重要保证。

Abstract: The axle-box bearings are the key components of high-speed EMU train, whose performance and fault directly affect the operating safety. Therefore, it is of great significance to monitor the motion state of bearings and to accurately analyze and predict their faults. In order to monitor the vibration and analyze fault of axle-box bearing, the software and hardware systems of vibration monitoring are designed and used to test vibration experiments. Then, the fault bearing can be effectively diagnosed by time-frequency domain analysis based on the collected data. The vibration monitoring systems of axle-box bearing can provide technical support and ensure safety of the high-speed EMU trains.