摘要
一系钢弹簧是动车组重要的承载和减振部件,其故障问题主要集中在断裂和磨损上。目前对于钢弹簧断裂故障的分析大多基于仿真和材料学分析方法,而未对其异常受力根源进行深入研究。从振动响应角度对某动车组一系钢弹簧疲劳断裂故障问题进行深入分析,综合理化分析、振动模态测试以及车轮状态调查,找到钢弹簧失效的根本原因,即车轮存在多边形,且其产生的强迫振动导致钢弹簧发生接触性疲劳断裂。通过车轮镟修,解决了钢弹簧断裂故障问题。
Primary steel spring is important bearing and damping component of EMU,the faults of which occur mainly as fracture and wear.At present,most analysis of steel spring fracture faults is based on simulation and material analysis methods,and the root cause of the abnormal stress is not studied in depth.From the perspective of vibration response,the fatigue fracture problem of primary steel spring in certain EMU is analyzed in depth.The physical-chemical analysis,vibration mode test and wheel state investigation are comprehensively adopted to locate the root cause of spring failure,that polygon exists in wheel and the induced forced vibration leads to contact fatigue fracture of primary steel spring.Through wheel lathing,the problem of steel spring fracture is solved.
作者
崔利通
杨集友
曾一鸣
李晓峰
王泽飞
段亮
CUI Litong;YANG Jiyou;ZENG Yiming;LI Xiaofeng;WANG Zefei;DUAN Liang(CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China;不详)
出处
《城市轨道交通研究》
北大核心
2021年第2期38-43,共6页
Urban Mass Transit
基金
中国中车科技研究开发计划重点课题(2017CDB040)
中国铁路科技研究开发计划重大课题(2017J003-B)。
