高速动车组轴箱轴承模拟线路加载试验研究

Study on Simulated Line Loading Test of Axle Box Bearing on High-speed EMU

研究了高速动车组轴箱轴承台架试验的试验条件,包括试验环境温度的要求、模拟风速的设定以及模拟列车运行速度的方法,提出了模拟线路加载的试验方案。基于实测的高速动车组轴箱轴承线路载荷谱,在高速轴承试验台上进行了加载试验,运行过程中实时监测轴承的温度变化和振动情况,运行过程稳定。试验结果表明,试验模拟线路加载试验方案可行,为高速动车组轴箱轴承的研发提供了理论参考。

The test conditions of axle box bearing rig test of high-speed EMU are studied,including the temperature of test environment,the setting of simulated wind speed and the method of simulating train running speed.The test scheme of simulated line loading test is put forward.Based on the measured line load spectrum of axle box bearing on high-speed EMU,the loading test is carried out in high-speed bearing test rig.The temperature change and vibration of bearing are monitored in real time during the whole operation,and the operation is stability.The test results show that the scheme of simulated line loading test is feasible,which provides a theoretical reference for the development of axle box bearing on high-speed EMU.