Volume 41 Issue 6
Dec.  2023
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Article Navigation >  Journal of Transport Information and Safety  > 2023  >  41(6): 12-19
WANG Jiaxin, ZHANG Hanchen, WU Zhiqiang, LIU Yuqing, CHEN Zaigang. A Suspension Stiffness Optimization for Driving System in High-speed Train with the Built-in Axle Box Based on Orthogonal Test[J]. Journal of Transport Information and Safety, 2023, 41(6): 12-19. doi: 10.3963/j.jssn.1674-4861.2023.06.002
Citation: WANG Jiaxin, ZHANG Hanchen, WU Zhiqiang, LIU Yuqing, CHEN Zaigang. A Suspension Stiffness Optimization for Driving System in High-speed Train with the Built-in Axle Box Based on Orthogonal Test[J]. Journal of Transport Information and Safety, 2023, 41(6): 12-19. doi: 10.3963/j.jssn.1674-4861.2023.06.002
shu

A Suspension Stiffness Optimization for Driving System in High-speed Train with the Built-in Axle Box Based on Orthogonal Test

doi: 10.3963/j.jssn.1674-4861.2023.06.002
  • 1.

    CRRC Tangshan Co., LTD, Tangshan 063000, China

  • 2.

    State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, China

  • Received Date: 2023-03-29
    Available Online: 2024-04-03
    Abstract
  • As the core subsystem of the power bogie of high-speed trains, the drive system is an important guarantee for the safe operation of high-speed trains. However, with the continuous increase in operating speed, the reliable and safe operation of high-speed trains is seriously challenged. To reduce the dynamic loads on the suspension nodes of the axle box built-in high-speed dynamic vehicle driving system and to reduce the vibration level of the key components of the driving system, this paper carries out an optimization study on the suspension stiffness of the driving system. To reduce the dynamic loads and the vibration levels of components in the driving system, an optimization analysis of the suspension stiffness is performed in this study. Based on the multi-body system dynamics theory, the axle box built-in high-speed locomotive dynamics model is established by comprehensively considering the effects of track random uneven excitation, traction power transmission and gear meshing. Using the orthogonal test design method, with the optimization objective of reducing the suspension load at the traction motor lifting point and the vertical load at the axle articulation point of the gearbox, the influence of the suspension stiffness of the traction motor lifting point, the gearbox boom lifting point, and the motor-gearbox connection point on the vibration acceleration of the key components of the vehicle and the dynamic load at the suspension nodes of the driving system are investigated. The influence law is also analyzed by using the extreme difference analysis method to obtain the optimal matching combination of the suspension stiffness of the driving system. The results show that the maximum longitudinal, lateral, and vertical suspension loads of the motor with optimized parameters are reduced by 22.3%, 37.9%, and 9.8%, respectively. Meanwhile, the vertical load between the gearbox and wheel axle is reduced by 9.1%. The lateral vibration accelerations of the motor, gearbox, and axle box are significantly reduced.

     

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