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基于机电液耦合的钢轨打磨模型

曾鲁庆 崔大宾 李立

曾鲁庆, 崔大宾, 李立. 基于机电液耦合的钢轨打磨模型[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20220577
引用本文: 曾鲁庆, 崔大宾, 李立. 基于机电液耦合的钢轨打磨模型[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20220577
ZENG Luqing, CUI Dabin, LI Li. Rail Grinding Model Based on Mechanical-Electric-Hydraulic Coupling[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220577
Citation: ZENG Luqing, CUI Dabin, LI Li. Rail Grinding Model Based on Mechanical-Electric-Hydraulic Coupling[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220577

基于机电液耦合的钢轨打磨模型

doi: 10.3969/j.issn.0258-2724.20220577
基金项目: 四川省科技计划(2021YJ0026)
详细信息
    作者简介:

    曾鲁庆(1981—),男,博士研究生,研究方向为钢轨打磨,E-mail:51642328@qq.com

    通讯作者:

    李立(1966—) ,女,教授,博士,研究方向为钢轨打磨、轮轨关系,E-mail:lili@swjtu.edu.cn

  • 中图分类号: U216.65

Rail Grinding Model Based on Mechanical-Electric-Hydraulic Coupling

  • 摘要:

    钢轨打磨发生在钢轨打磨车行驶过程中,会受到钢轨打磨车动力学性能的影响. 钢轨打磨一般设置为恒功率打磨,涉及到砂轮钢轨接触关系、砂轮钢轨磨削关系、液压系统、控制系统等,是一个机电液耦合过程. 在考虑机电液耦合的钢轨打磨过程中,基于车辆轨道耦合动力学,建立机电液耦合的钢轨打磨整体模型,包含车辆轨道耦合动力学子模型、砂轮钢轨接触子模型、磨削子模型、液压系统子模型;通过与已有的实验数据对比,对该钢轨打磨模型进行验证. 研究结果表明:车辆轨道动力学模型验证时,脱轨系数最大误差为11.11%,轮重减载率最大误差为7.69%,轮轴横向力最大误差为11.68%;液压控制模型验证时,在0.7Hz与1.7Hz波磨下,无杆腔压力偏差率分别为−2.96% ~ 2.92%、−0.32% ~ 1.38%,无杆腔流量偏差率为−24.11% ~ 0、−48.72% ~ 0;磨削模型验证时,整体趋势一致,最大偏差点处偏差量为0.036 mm;以上偏差均在可接受范围内,此模型能应用于实际的钢轨打磨研究中.

     

  • 图 1  钢轨打磨车

    Figure 1.  Rail grinder

    图 2  打磨车车辆-轨道空间耦合模型

    Figure 2.  Vehicle-track spatial coupling model of rail grinder

    图 3  砂轮钢轨接触图

    Figure 3.  Wheel-track contact

    图 4  等效弹簧

    Figure 4.  Equivalent spring

    图 5  液压模型

    Figure 5.  Hydraulic submodel

    图 6  基于机电液耦合钢轨打磨模型

    Figure 6.  Rail grinding model based on mechanical-electric-hydraulic coupling

    图 7  打磨作业车的动力学指标

    Figure 7.  Dynamic indicators of rail grinder

    图 8  波磨不平顺对打磨压力与流量的影响

    Figure 8.  Influence of rail irregularity on grinding pressure and flow

    图 9  磨削深度对比图

    Figure 9.  Grinding depth comparison

    表  1  曲线设置

    Table  1.   Curve parameters

    曲线工况 曲线半径/m 缓和曲线/m 外轨超高值/m 圆曲线长/m 通过速度/(km·h−1
    1 400 120 0.12 100 70
    2 500 110 0.11 100 80
    3 600 100 0.1 100 80
    4 700 100 0.1 100 100
    5 800 100 0.1 100 100
    6 1000 90 0.09 100 100
    7 1000 90 0.09 100 110
    8 1200 80 0.08 100 120
    下载: 导出CSV
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  • 收稿日期:  2022-08-16
  • 网络出版日期:  2024-07-25

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