Vibration analysis of bogie components based on electromechanical coupling model and test for high speed train

High-speed train has the characteristics of multiple internal and external excitation sources and frequency bandwidth, which has a great impact on the operation quality and safety of train. In order to compare and analyze the longitudinal and vertical vibration of traction motor, gearbox and frame end, the electro-mechanical coupling simulation model of high-speed train was established. The results show that there is a significant frequency, i.e., 6 times traction motor output torque fundamental frequency, on the longitudinal and vertical of traction motor and pinion, and on the vertical of big gear. The test data show that the rail gap impact points at lateral of axle box and frame end are synchronized. The vibration amplitude of gear box for the turnout impact is much less than that for the inter station impact. The gear box has a 600 Hz main frequency, and there is a 28 Hz - 30 Hz side frequency around the 600Hz center frequency.