有轨电车轮对轴承失效原因的分析及优化改进  

Failure Reason Analysis and Optimized Improvement on Wheel Bearings for Tramcar

作　　者：曾献智[1,2,3] 奚强 刘璇[1] 王宏 温朝杰 ZENG Xianzhi;XI Qiang;LIU Xuan;WANG Hong;WEN Chaojie(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Zhongzhe High-Speed Railway Bearing Co.,Ltd.,Quzhou 324000,China;Strategic Alliance for Technology Innovation in Rolling Bearing Industry,Luoyang 471039,China;HBIS Group Co.,Ltd.,Handan 056000)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]中浙高铁轴承有限公司,浙江衢州324000 [3]滚动轴承产业技术创新战略联盟,河南洛阳471039 [4]河钢集团有限公司,河北邯郸056000

出　　处：《轴承》2020年第11期34-39,共6页Bearing

摘　　要：以某型有轨电车轮对轴承为研究对象,针对轴承在使用过程中出现的早期失效,利用理论计算、形貌及金相检验等技术手段,分析导致轴承失效的原因为轴承与车轮、车轴安装配合尺寸链设计不当,使轴承产生过大的负游隙,增加了轴承附加载荷,导致轴承疲劳剥落。依据分析结果,提出轴承游隙优化方案,经装车使用验证,解决了轮对轴承早期疲劳剥落问题。Taking a type of wheel bearings for tramcar as research objects,aimed at early failure of the bearings during use,the technical means such as theoretical calculation,morphology and metallographic examination are used,the failure reason is improper design of dimension chain of the bearings,wheel and axle during matching installation,the bearings produce excessive negative clearance,the additional load of the bearings are increased,resulting in fatigue spalling of the bearings.According to analysis results,the optimization scheme is put forward for clearance of the bearings.The problem of early fatigue spalling of wheel bearings is solved through verification of loading and use.

关 键 词：滚动轴承 轮对轴承 有轨电车 疲劳 剥落 安装 配合 负游隙 

分 类 号：TH133.33+2[机械工程—机械制造及自动化] TG115[金属学及工艺—物理冶金]