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机车与车辆间车钩连挂稳定性

邹瑞明 马卫华 罗世辉

邹瑞明, 马卫华, 罗世辉. 机车与车辆间车钩连挂稳定性[J]. 交通运输工程学报, 2016, 16(6): 48-54.
引用本文: 邹瑞明, 马卫华, 罗世辉. 机车与车辆间车钩连挂稳定性[J]. 交通运输工程学报, 2016, 16(6): 48-54.
ZOU Rui-ming, MA Wei-hua, LUO Shi-hui. Coupling stability of couplers between locomotive and vehicle[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 48-54.
Citation: ZOU Rui-ming, MA Wei-hua, LUO Shi-hui. Coupling stability of couplers between locomotive and vehicle[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 48-54.

机车与车辆间车钩连挂稳定性

基金项目: 

国家自然科学基金项目 51575458

详细信息
    作者简介:

    邹瑞明(1991-), 男, 江西樟树人, 西南交通大学工学博士研究生, 从事机车车辆动力学研究

    罗世辉(1964-), 男, 江西赣州人, 西南交通大学教授, 工学博士

  • 中图分类号: U260.34

Coupling stability of couplers between locomotive and vehicle

More Information
  • 摘要: 为了明确机车车辆间车钩的连挂稳定性, 提出了多边形接触模型, 模拟车钩连挂面之间的接触和摩擦, 即钩头轮廓面表层采用多边形建模, 以判定接触区域, 并对接触区域进行离散化处理, 通过弹性基础模型求解接触力, 由法向接触力和切向相对速度决定对应的摩擦力, 结合《机车车辆车钩连接轮廊》(TB/T 2950—2006)、干涉分析和有限元计算验证了建模方法的可靠性; 组建了能够反映中部机车动力学特性及其钩缓装置动态行为的重载列车动力学模型, 对列车在不同工况下通过1.2%长大下坡道和300m半径曲线时机车车辆间车钩的连挂稳定性进行了分析。分析结果表明: 车钩力对车钩连挂面之间的相对运动具有较大的影响, 稳定的车钩力能够使车钩连挂面之间产生法向接触力, 若车钩连挂面之间存在相对运动或相对运动的趋势时, 便会产生相应的切向摩擦力以阻止连挂车钩之间的相对运动, 当车钩力出现波动或者较小时, 连挂车钩容易处于自由间隙状态, 因此, 不足以产生足够的约束作用而出现较大的相对运动, 此时的最大垂向相对位移达到149.5 mm, 在通过300 m半径曲线时, 水平面内也会产生最大为4.5°的相对转角以补偿车钩的偏转行为。

     

  • 图  1  连挂车钩间的3种典型状态

    Figure  1.  Three typical states of coupling couplers

    图  2  车钩多边形接触模型

    Figure  2.  PCM of couplers

    图  3  多边形接触模型计算流程

    Figure  3.  Calculation process of PCM

    图  4  车钩的3种仿真接触形态

    Figure  4.  Three simulated contact forms of couplers

    图  5  列车动力学模型

    Figure  5.  Train dynamics model

    图  6  下坡道的钩头垂向相对位移

    Figure  6.  Vertical relative displacements of coupler knuckle on down-gradient

    图  7  下坡道的钩头水平面内相对转角

    Figure  7.  Relative angles in horizontal plane of coupler knuckle on down-gradient

    图  8  下坡道的车钩力

    Figure  8.  Coupler forces on down-gradient

    图  9  曲线通过时的车钩力

    Figure  9.  Coupler forces on curve

    图  10  曲线通过时的钩头垂向相对位移

    Figure  10.  Vertical relative displacements of coupler knuckle on curve

    图  11  曲线通过时的钩头水平面内相对转角

    Figure  11.  Relative angles in horizontal plane of coupler knuckle on curve

    表  1  计算结果对比

    Table  1.   Comparison of calculation results

    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-06-13
  • 刊出日期:  2016-12-25

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