Analysis of the rotation angle of a coupler used on heavy haul locomotives
Analysis of the rotation angle of a coupler used on heavy haul locomotives
复制标题
DOI：
10.1177/0954409713496766
复制
发表时间：
2014-11
期刊：
影响因子：
--
通讯作者：
Ziqiang Xu;Weihua Ma;Qing Wu;S. Luo
中科院分区：
文献类型：
--
作者：
Ziqiang Xu;Weihua Ma;Qing Wu;S. Luo
列车长度和轴荷的增加显着增加了重载列车的列车内力。这些力与车钩的旋转行为相结合会对列车的运行安全产生不利影响。本文分析了施加压缩力时耦合器的旋转行为。还提出了耦合器合适的自由旋转角度和稳定机构。使用由三个重载机车和两个车钩组成的列车动态模型进行模拟。结果表明，车钩自由旋转角为6°的列车比初始自由旋转角为8°的列车具有更好的动态安全性和更低的车轮踏面磨损程度。机车结构参数的变化，包括二挡自由间隙、前后挡之间的距离、二挡与车钩销之间的距离，会影响车钩的最大旋转角度，进而影响列车的运行安全。选择重载车钩及缓冲系统时应考虑机车结构参数与车钩自由旋转角度的匹配，避免因车钩过度旋转而产生安全问题。
Increases in train length and axle loads have significantly increased in-train forces for heavy haul trains. These forces when combined with the rotation behavior of the coupler can exert an adverse effect on the operational safety of trains. This paper analyzes the rotation behavior of a coupler resulting from the application of a compressive force. A suitable free-rotation angle for the coupler and a stabilization mechanism are also presented. Simulations were performed using a dynamic model of a train consisting of three heavy haul locomotives and two couplers. The obtained results indicate that trains with free-rotation angles of the coupler of 6°have a better dynamic safety and lower levels of wheel tread wear than trains with an initial free-rotation angle of 8°. Variation of the locomotive’s structural parameters, including the secondary stop free clearance, the distance between front and rear stops and the distance between secondary stop and coupler pin, affects the maximum rotation angle of the coupler and, in turn, the operational safety of the train. The matching of the locomotive’s structural parameters and the free-rotation angle of the coupler should be considered when selecting a heavy haul coupler and buffer system so as to avoid safety problems caused by excessive rotation behavior of the coupler.