Volume 25 Issue 2
Apr.  2025
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SONG Ye, QI Ya-yun, ZHAN Li-chao. Analysis of dynamics performance and wheel wear on a high-speed EMUs equipped with herringbone gears[J]. Journal of Traffic and Transportation Engineering, 2025, 25(2): 351-360. doi: 10.19818/j.cnki.1671-1637.2025.02.023
Citation: SONG Ye, QI Ya-yun, ZHAN Li-chao. Analysis of dynamics performance and wheel wear on a high-speed EMUs equipped with herringbone gears[J]. Journal of Traffic and Transportation Engineering, 2025, 25(2): 351-360. doi: 10.19818/j.cnki.1671-1637.2025.02.023
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Analysis of dynamics performance and wheel wear on a high-speed EMUs equipped with herringbone gears

doi: 10.19818/j.cnki.1671-1637.2025.02.023
  • 1.

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

  • 2.

    School of Mechanotronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China

  • 3.

    CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, Jilin, China

Funds:

National Natural Science Foundation of China U2268211

National Natural Science Foundation of China 52302467

Independent Project of State Key Laboratory of Traction Power 2023TPL-T10

Open Project of State Key Laboratory of Traction Power TPL2309

  • Received Date: 2024-03-14
  • Publish Date: 2025-04-28
    Abstract
  • A vehicle dynamics model incorporating the complete traction transmission system was built. Herringbone and helical gears were adopted in modeling the transmission system. A comparative analysis was conducted on the influence of the two gear transmission systems on wheel-rail contact parameters and vehicle dynamics performance. The effect of herringbone gear meshing on wheel wear in the transmission system was analyzed. Analysis results show that herringbone gears increase the meshing stiffness of the gear pairs, resulting in smoother torque transmission. Herringbone gears effectively reduce both the lateral forces between wheels and rails and the lateral displacement of wheelsets. The maximum lateral displacements during traction were 8.9 and 5.7 mm in the helical and herringbone gear models, respectively, indicating a reduction of 35.9% in the herringbone gear model. Herringbone gears significantly reduces the axial forces in the gears, with the maximum axial forces of helical and herringbone gears reaching 4.50 and 2.85 kN, respectively. When herringbone gear transmission systems are applied in high-speed EMUs, wheel wear becomes more concentrated after new wheels are paired with new rails, which make it difficult to achieve uniform wheel profile wear. Under straight-line conditions, wheel wear in the herringbone gear model increases by 5.96% compared to the helical gear model. Wheel wear is strongly affected by the traction torque. Harmonic torque affects wheel wear to some extent, and its increase lead to higher wear. The helix angle has a minor effect on wheel wear. The research provides a theoretical basis for the design of herringbone gear transmission systems in high-speed EMUs.

     

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