阐述了轮缘高度、轮缘厚度以及轮缘综合值3个参数对城市轨道车辆车轮的作用以及重要性,基于城市轨道交通某线路车轮的实际磨耗数据,分别对这3个参数进行重点研究,分析了各参数对车辆车轮磨耗的影响,主要结果表明:该线路属于典型的踏面磨损线路,存在较普遍的轮缘虚增厚问题,拖车的第一轴和第四轴存在一定同轴左、右车轮轮缘磨损不均匀现象。有针对性地提出延长该线路车轮使用寿命的建议,认为可以通过适当调节轮轨硬度比、定期反向运行、调整拖车空气制动力和动车电制动力的分配比例、降低空气制动切入点速度等方法有效降低车轮磨耗,提高车辆的安全运营。

This paper discusses the role and the importance of three parameters, that is, the flange height, the flange thickness and the comprehensive value of the flange. Based on the actural wear data of the wheel flange in some urban rail line, the effects of the three parameters on the wear of wheels of a vehicle are analysed. It is shown that this line is a typical tread wear line; the virtual thickening flange is common for the vehicles of the line, the asymmetric wear on the wheel flange can be found in the first and fourth shafts of the trailer car. Finally, some suggestions on how to improve the service life of the line are proposed. For example, the proper adjustment of the wheel-rail hardness ratio, the regular reverse operation, the adjustment of the force distribution for the trailer air braking and moter car electric braking, reducing the proportion of the air braking point velocity and other methods to reduce the wheel wear, improve the safe operation of the urban rail vehicle.