基于动车组横向稳定性的等效锥度限值研究  

Research on Limit Value of Equivalent Conicity Based on Lateral Stability of EMU Trains

作　　者：许自强[1] XU Ziqiang(Locomotive ＆ Car Research Institute, China Academy of Railway Sciences, Beijing 100081, China)

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《中国铁路》2017年第12期29-34,共6页China Railway

基　　金：中国铁路总公司科技研究开发计划项目(2016G008-E;2016J007-H);中国铁道科学研究院科技研究开发计划项目(2015YJ047)

摘　　要：轮轨接触几何匹配关系直接影响动车组的振动性能,轮轨接触不匹配可造成动车组构架横向加速度报警、车体晃车等问题。通过对镟修后初始等效锥度和车体晃车进行研究,提出镟修后初始等效锥度限值,评价镟修质量。通过对服役动车组等效锥度的跟踪、镟修到限等效锥度分布范围与报警轮对等效锥度值的统计,提出LMA、LMB、LMC、LMD型4种车轮踏面不同速度级的服役等效锥度限值,评估动车组横向稳定性。根据等效锥度限值对车轮进行管理可以控制轮轨型面与接触关系,有效缓解构架横向加速度报警与车体晃车问题,实现车轮状态修,提高镟修经济性。The geometric matching of wheel-rail contact directly affects the vibration performance of EMU trains. Wheel-rail mismatching may cause several problems such as EMU structure＇s lateral acceleration alarm and train shaking. Based on the research on the initial equivalent conicity and train shaking after lathing, the limit value of initial equivalent conicity after lathing was proposed and the lathing quality was evaluated in this paper. Based on tracking of equivalent conicity of EMU trains in operation, distribution range of equivalent conicity and statistics of equivalent conicity value of wheel sets in alarm, this paper proposed the limit value of equivalent conicity at different speed levels regarding four types of wheel treads, LMA, LMB, LMC and LMD respectively. The paper also evaluated the lateral stability of EMU trains. Wheel management based on limit value of equivalent conicity could be utilized to control the wheel-rail relationship in terms of profile and contact, relieving the problems of lateral acceleration alarm and train shaking. Repairing depending on track condition could be carried out, which makes lathing more economical.

关 键 词：横向稳定性 车体晃车 等效锥度限值 LMB型车轮踏面 轮轨接触 

分 类 号：U270.11[机械工程—车辆工程]