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车轮镟修型面对轮轨匹配性能的影响
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国家自然科学基金项目(51275427);牵引动力国家重点实验室自主研究课题(2012TPL-T14);中央高校基本科研业务费专项资金项目(2682014CX018EM);西南交通大学峨眉校区高层次人才队伍建设项目(RC2013-13).


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    摘要:

    目前动车组轮广泛采用的经济型镟修法,镟修后车轮并没有达到标准车轮轮缘厚度。为探究经济镟修型面对轮轨匹配性能产生的影响,为车轮维修策略的制定提供理论依据,对比分析标准车轮型面和新镟修的不同轮缘厚度车轮型面的静态匹配特性与动力学性能。结果表明:目前镟修方法得到的薄轮缘镟修型面有利于提高车辆的直线运行临界速度,但其他动力学性能指标略有下降;在通过不同半径曲线时,各型面曲线通过性能相差不大,小半径曲线工况下,各型面轮缘均与钢轨贴靠;通过大半径曲线时,在较大横移激扰下薄轮缘型面存在失稳的风险,从而造成较大的轮轨横移量及轮轴横向力,使轮缘与钢轨贴靠现象严重,造成严重的轮缘磨耗。

    Abstract:

    At present the wheels’ economical re-profiling methods were widely adopted.But the flange thickness after re-profiling was not returned to the standard thickness.In order to explore the influence of wheel re-profiling on wheel-rail matching performance,and to provide a theoretical basis for the establishment of wheel re-profiling strategy,the static matching performance and dynamic performance of new re-profiling profiles with different thickness were compared and analyzed with that of standard wheels.Results show that under the current re-profiling methods,the thin rim profile is helpful to improve the critical speed of vehicle linear running,while other dynamic performance index fall slightly.Curve passing performance of wheels with different thickness of profiles is almost the same under different radius curve.Under the condition of small radius curve,the flange of all the profiles is contacted with the rail.When passing through the large radius curves,the thin flange profile has the risk of instability under a larger excitation of lateral displacement,which will cause larger wheel/rail lateral displacement and axle lateral force and result in the serious wear of flange.

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任文娟,崔大宾,李 立,苏 建.车轮镟修型面对轮轨匹配性能的影响[J].润滑与密封,2015,40(5):16-21.
.[J]. Lubrication Engineering,2015,40(5):16-21.

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  • 在线发布日期: 2015-11-24
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