Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train

Jingwei CHEN; Tao CUI; Jianfeng SUN; Wei WANG

doi:10.13890/j.issn.1000-128x.2020.05.104

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Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train

Research & Development | 更新时间：2021-12-10

- Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train
- Electric Drive for Locomotives Issue 5, Pages: 128-131,137(2020)
- 作者机构：
  
  1.中车唐山机车车辆有限公司，河北　唐山　063035
  2.西南交通大学　牵引动力国家重点实验室，四川　成都　610031
  3.西南交通大学　机械工程学院，四川　成都　610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2020.05.104
  CLC：
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Jingwei CHEN, Tao CUI, Jianfeng SUN, et al. Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train. [J]. Electric Drive for Locomotives (5):128-131,137(2020)
DOI：

Jingwei CHEN, Tao CUI, Jianfeng SUN, et al. Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train. [J]. Electric Drive for Locomotives (5):128-131,137(2020) DOI： 10.13890/j.issn.1000-128x.2020.05.104.

摘要

为了研究钢轨在轨距角处打磨量对高速列车异常低频晃动的影响，通过对标准CN60廓形和实测轨距角过渡打磨廓形的插值，得到了一组对应不同磨耗量的钢轨廓形。以某型动车组为研究对象，并选取标准S1002CN为车轮踏面廓形，计算分析了其与不同钢轨廓形匹配下轮轨接触关系以及车体横向振动响应的变化规律。分析结果表明，随着钢轨轨距角处打磨量的增大，其与标准S1002CN踏面匹配下的等效锥度逐渐减小，轮轨接触点位置逐渐集中至踏面名义滚动圆附近和轨顶附近，车体横向振动加速度主频减小且幅值增大，相应的横向平稳性指标增大。基于此，筛选出了其中1个钢轨廓形作为临界廓形，用于限定钢轨打磨的合理范围。

Abstract

To study the influence of the polished depth of rail profile at the gauge angle on the low-frequency vibration of high-speed train, a group of rail profiles were obtained by interpolating between the standard CN60 profile and the measured rail profile which was excessively polished at the gauge angle. Choosing a certain type of EMUs as the research object, and selecting the standard profile S1002CN as the wheel profile, the evolution law of the wheel-rail contact relationship and the lateral vibration of the carbody were calculated and analyzed when it matched with different rail profiles. The analysis results showed that with the increasing of grinding depth at the rail gauge angle, the equivalent conicity under the matching relationship between the rail and the standard profile S1002CN decreased gradually, and the wheel-rail contact points moved to the nominal rolling circle of the tread and the rail top. Moreover, the frequency of the vibration decreased while the amplitude of vibration and the lateral sperling index increased. Finally, one of the rail profiles was selected as the critical profile to limit the reasonable range of rail grinding.

关键词

高速列车低频晃动轮轨匹配关系钢轨打磨空间插值仿真钢轨

Keywords

high-speed trainlow frequency huntingwheel-rail contact relationshiprail grindingspatial interpolationsimulationrail

references

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