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对某型100%低地板轻轨车采用独立车轮动力转向架的导向机理进行分析。认为独立车轮动力转向架一侧的前、后2个车轮与轨道的接触处会因转向架前、后“轮对”发生横移和摇头而出现纵向蠕滑,产生纵向蠕滑力;在纵向蠕滑力矩的作用下,转向架前、后“轮对”将反向摇头和横移,从而使独立车轮转向架实现导向功能。通过定性分析、公式推导和动态仿真,论证了纵向耦合蠕滑导向理论的正确性,公式计算和动态仿真的结果均与定性分析的结论一致。纵向耦合能够使独立车轮动力转向架获得导向能力;实现纵向耦合的方式可以是机械的,也可以是电气的;纵向耦合独立车轮转向架的导向能力不如传统轮对转向架。
The guide mechanism of a kind of 100% low floor LRV using independent wheel power bogie is analyzed. It is considered that the contact between the two front wheels and the rear wheels on the side of the independent wheel power bogie will cause longitudinal creep due to the longitudinal movement and the longitudinal movement of the front and rear rear wheels of the bogie, Under the effect of longitudinal creep torque, the front and rear bogies will be shaken and traversed in the reverse direction so that the independent wheel bogies can be guided. Through the qualitative analysis, formula derivation and dynamic simulation, the correctness of longitudinal coupled creep guided theory is demonstrated. The results of formula calculation and dynamic simulation are consistent with the conclusions of qualitative analysis. Longitudinal coupling enables independent wheel power bogies to be steered; the manner of longitudinal coupling can be either mechanical or electrical; the ability to longitudinally couple independent wheel bogies does not provide as much steering capability as a conventional wheel-to-bogie.