Research on the Influence of Wheel Tread Wear on Pinion and Rack Contact State of Rack-rail Trains

Lei Huanhuan; Zhao Jiadong; Zhao Yukai; Shi Lubing; Li Zhiyuan; Yue Zihao

doi:10.16578/j.issn.1004.2539.2024.04.018

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Research on the Influence of Wheel Tread Wear on Pinion and Rack Contact State of Rack-rail Trains

Test·Analysis | 更新时间：2024-04-19

- Research on the Influence of Wheel Tread Wear on Pinion and Rack Contact State of Rack-rail Trains
- Journal of Mechanical Transmission Vol. 48, Issue 4, Pages: 131-137(2024)
- 作者机构：
  
  郑州机械研究所有限公司，河南郑州 450001
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2024.04.018
  CLC：
- Published：15 April 2024，
  
  Received：04 May 2023，
  
  Revised：17 May 2023，
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雷欢欢,赵家栋,赵玉凯等.车轮踏面磨耗对齿轨列车齿轮齿条接触状态影响研究[J].机械传动,2024,48(04):131-137.

Lei Huanhuan,Zhao Jiadong,Zhao Yukai,et al.Research on the Influence of Wheel Tread Wear on Pinion and Rack Contact State of Rack-rail Trains[J].Journal of Mechanical Transmission,2024,48(04):131-137.
雷欢欢,赵家栋,赵玉凯等.车轮踏面磨耗对齿轨列车齿轮齿条接触状态影响研究[J].机械传动,2024,48(04):131-137. DOI： 10.16578/j.issn.1004.2539.2024.04.018.

Lei Huanhuan,Zhao Jiadong,Zhao Yukai,et al.Research on the Influence of Wheel Tread Wear on Pinion and Rack Contact State of Rack-rail Trains[J].Journal of Mechanical Transmission,2024,48(04):131-137. DOI： 10.16578/j.issn.1004.2539.2024.04.018.

摘要

针对齿轨列车车轮踏面磨耗情况下难以探究齿轮齿条接触状态规律的问题，提出了一种基于Hertz接触理论的考虑车轮踏面磨耗情况的齿轮齿条齿面接触应力计算模型。首先，分析了磨耗情况下齿轮齿条的接触关系，获得了接触应力计算关键参数随车轮磨耗的变化规律，并结合Hertz接触理论构建了考虑车轮磨耗的齿轮齿条接触应力计算模型；然后，选取某工程齿轮齿条参数进行计算，获得了磨耗周期内的齿面接触应力分布，并通过27组有限元仿真试验获得了不同磨耗量、不同接触位置的齿轮齿条接触应力数据，与上述计算模型结果进行了对比；最后，运用上述计算模型进一步分析了车轮磨耗影响接触应力规律的内在机制和关键因素。结果表明，模型结果与仿真计算结果的最大相对误差为7.71%，验证了计算模型的准确性；车轮踏面磨耗量越大，齿轮齿条啮入点附近的接触应力越大，其影响机制是车轮磨耗导致啮入点附近驱动齿轮曲率半径急剧减小；增大初始中心距和齿条齿顶圆角影响系数，可降低车轮踏面磨耗对接触应力的影响，并可通过减小高度调整周期来优化接触状态情况。

Abstract

Aiming at the problem that it is difficult to explore the contact state law of racks and pinions under the condition of rack-rail train wheel tread wear

a calculation model of rack and pinion tooth surface contact stress considering wheel tread wear is proposed based on the Hertz contact theory. Firstly

the contact relationship of racks and pinions under wheel tread wear is analyzed

the change law of key parameters of contact stress calculation with wheel wear is obtained

and the contact stress calculation model of racks and pinions considering wheel wear is constructed in combination with the Hertz contact theory. Then

the rack and pinion parameters of an engineering are selected for calculation

the tooth surface contact stress distribution in the wear cycle is obtained

and the contact stress data of the pinions and racks and of different wear quantities and different contact positions are obtained through 27 sets of finite element simulation tests

which are compared with the above calculation model results. Finally

the above calculation model is used to further analyze the internal mechanism and key factors of wheel wear affecting the contact stress law. The results show that the maximum relative error between the model results and the simulation calculation results is 7.71%

which verifies the accuracy of the calculation model. The greater the wear of the wheel tread is

the greater the contact stress near the meshing entry point of the rack and pinion will be; and the influence mechanism is that the radius of curvature of the drive gear near the meshing entry point is sharply reduced by wheel wear. Increasing the initial center distance and the rack tooth top fillet influence coefficient can reduce the influence of the wheel tread wear. The height adjustment period can also be appropriately reduced to optimize the contact state situation.

关键词

齿轨列车车轮踏面磨耗齿轮齿条Hertz接触齿面接触应力理论计算

Keywords

Rack-rail trainWheel tread wearRack and pinionHertz contactTooth surface contact stressTheoretical calculation

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