现代有轨电车线路轨距加宽对独立轮对磨耗的影响

Influence of Widened Track Gauge of the Modern Tram Line on the Wear of Independent Wheelset

结合现代有轨电车车辆-轨道耦合动力学子模型、轮轨多点接触子模型与Archard材料磨耗子模型,建立了车轮磨耗预测分析模型。与相关参考文献结果进行对比,验证了本文建立模型的准确性。利用该磨耗预测模型计算分析了轨距加宽对现代有轨电车通过小半径曲线轨道时车轮磨耗的影响。结果表明:在相同的线路条件下,独立车轮轮缘磨耗大于非独立车轮,差值最大为0.94 mm,而两种车轮踏面磨耗情况较为接近;曲线半径较小的线路,轨距加宽为10~15 mm时车轮轮缘磨耗较小,而轨距加宽为15 mm时车轮轮缘磨耗较为均匀。研究结果可为现代有轨电车车辆维护提供有益参考。

Combined with the vehicle-track coupling dynamic sub-model of the modern tram,multi-point contact sub-model of wheel and rail and Archard material grinding wear sub-model,a predictive analysis model of wheel wear was established.The accuracy of the model in this paper is verified by comparing with the results of relevant references.It is used to calculate and analyze the influence of the widened gauge on the wheel wear of a modern tram when it passes through a curved track with a small radius.The results show that:under the same line condition,the abrasion of independent wheel rim is greater than that of non-independent wheel;the difference value is 0.94 mm at most,and the results for two kinds of wheel tread are close to each other.For the line with small curve radius,the wheel rim wear is relatively small when the gauge width is 10-15 mm,while the wheel rim wear is relatively uniform when the gauge width is 15 mm.The research results can provide useful reference for modern tram vehicle maintenance.