轨道车辆轮轨关系检测及等效锥度管理  

Inspection on wheel and rail interface of rail vehicles and management of equivalent conicity

作　　者：曾京[1] 干锋[1] 罗光兵[1] Zeng Jing;Gan Feng;Luo Guangbing

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《现代城市轨道交通》2021年第6期29-34,共6页Modern Urban Transit

摘　　要：轮轨关系是轨道车辆安全运行的主要研究对象,而等效锥度是重要评价指标,通过等效锥度可以判断晃车和抖车现象。研究结果表明,车体的横向晃动频率在1~2 Hz,主要是等效锥度过低引起车辆蛇行失稳所致。车体抖动频率在8 Hz左右,主要是等效锥度过高诱发车体模态共振所致。为更精准的分析等效锥度变化,需要系统的、精确的检测设备实行全线线路廓形检测以及轮对型面的磨耗检测,结合车轮踏面和轨道廓形进行轮轨交叉匹配运算,得到全部车辆和线路的等效锥度热力图进行轮轨健康管理及运营评价,通过等效锥度管理可实现对车体抖动晃动的诊断和预防,并对轮对镟修和钢轨打磨提供合理的指导意见。Wheel rail interface is the main research focus of vehicle safety operation,and the equivalent conicity is an important evaluation index.The phenomenon of shaking and rolling can be judged by equivalent conicity.The results show that the lateral snaking frequency of the vehicle body is 1-2 Hz,which is mainly caused by the instability of the vehicle and caused by the too low equivalent conicity.The vibration frequency of the car body is around 8 Hz,which is mainly caused by the high equivalent conicity.In order to analyze the change of equivalent conicity more accurately,systematic and accurate inspection equipment is required to carry out line profile inspection and worn wheel profile inspection.With consideration of wheel running tread and track profile,wheel rail profile cross matching algorithm is carried out,and the equivalent conicity thermal diagram of all vehicles and lines is obtained for health management and operation evaluation of wheel and rail,The diagnosis and prevention of the hunting and rolling of the car body can be realized by equivalent conicity management,providing reasonable guidance for wheel lathing and rail grinding.

关 键 词：轨道车辆 轮轨关系 等效锥度 低频晃车 健康管理 

分 类 号：U279.2[机械工程—车辆工程]