Vibration Performance of Traction Gearbox of a High-Speed Train: Theoretical Analysis and Experiments

The gearbox is the key component of traction drive system a high-speed train. At same time, can easily experience box housing failure due to bearing internal excitation from gear meshing and external motor torque fluctuation, wheel polygon, so on. In order analyze vibration noise gearbox, dynamic model train transmission was established under conditions time-varying stiffness error. A frequency spectrum analysis at nodes that changed with speed carried out. test rig for built, testing method put forward. research on various working were out, evaluation indexes acceleration, intensity, air different measuring points obtained. study provided reference basis performance optimization design fault diagnosis railway system.