ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS

ZHANG KeYuan; WANG WenJian; GUO Jun; LIU QiYue

doi:10.16579/j.issn.1001.9669.2016.03.004

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ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS

更新时间：2022-09-22

- ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS
- Journal of Mechanical Strength Vol. 38, Issue 3, Pages: 447-452(2016)
- 作者机构：
  
  1. 西南交通大学摩擦学研究所
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2016.03.004
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ZHANG KeYuan, WANG WenJian, GUO Jun, et al. ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS. [J]. 38(3):447-452(2016)
DOI：

ZHANG KeYuan, WANG WenJian, GUO Jun, et al. ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS. [J]. 38(3):447-452(2016) DOI： 10.16579/j.issn.1001.9669.2016.03.004.

摘要

钢轨打磨列车作业时存在一定打磨压力波动,从而影响打磨钢轨的表面不平顺。在考虑加载机构的运动行为及砂轮-钢轨接触行为的基础上,建立了打磨小车动力学分析模型,利用该模型研究了钢轨高低不平顺、打磨速度、钢轨波磨、打磨小车结构参数等因素对钢轨打磨压力波动的影响。结果表明:轨道高低不平顺是打磨压力产生波动的主要原因;提高打磨速度,打磨压力波动减小;特定的钢轨波磨波长会使打磨机构产生共振,导致打磨压力波动出现峰值;优化打磨小车一系定位刚度和打磨单元的轻量化有利于减小打磨压力波动,提高钢轨打磨作业的稳定性。

Abstract

There is some grinding pressure fluctuation on the rail grinding train operation,which affects the uneven surface of grinding rail. The dynamic model of rail grinding vehicle was established which gave full consideration to the grinding mechanism’s motion behavior and contact area behavior between rail and grinding wheel. Furthermore,the effect of the vertical irregularity of rail surface,grinding speed,rail corrugation and structure parameters of grinding vehicle on the grinding pressure fluctuation were explored in detail. The results show that the vertical irregularity of rail surface is the main cause of grinding pressure fluctuation. With an increase of grinding speed,the pressure fluctuation reduces. Certain wavelengths of rail corrugation result in the resonance of grinding mechanism,which causes the grinding pressure fluctuation peaks. The optimization of primary locating stiffness of grinding vehicle and the lightweight of grinding mechanism are beneficial to decrease the grinding pressure fluctuation and increase the grinding stability.

关键词

钢轨打磨压力波动打磨速度钢轨波磨

Keywords

Rail grindingPressure fluctuationGrinding speedRail corrugation

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