城市轨道交通车辆转向架踏面制动单元闸瓦吊销轴松脱故障原因分析及优化  

Cause Analysis and Optimization of Loose Revocation Shaft of Brake Shoe Pin of Bogie Tread Brake Unit of Urban Rail Transit Vehicle

作　　者：甄文通 褚洪菲 刘顾同 李津 ZHEN Wentong;CHU Hongfei;LIU Gutong;LI Jin(Xuzhou Metro Operation Co.,Ltd.,221005,Xuzhou,China)

机构地区：[1]徐州地铁运营有限公司,徐州221005

出　　处：《城市轨道交通研究》2022年第8期159-161,165,共4页Urban Mass Transit

摘　　要：针对城市轨道交通车辆转向架踏面制动单元闸瓦吊销轴松脱现象,结合闸瓦吊销轴连接结构的特点,验算了螺栓紧固力矩,调查了螺栓质量检验控制结果,并核查了闸瓦吊销轴安装工艺的规定及执行标准,推断得到销轴螺纹孔内残存的防锈油降低了锁固胶强度,是引发闸瓦吊销轴松脱故障的根本原因。通过相关模拟试验验证了该推断的正确性。针对故障原因,提出改用高强度螺纹锁固胶、增设双叠自锁垫圈、增大紧固扭矩等优化措施。相关试验及应用结果表明,优化措施可有效避免类似故障的发生。Targeting urban rail transit vehicle bogie brake shoe pin revoked tread braking unit shaft loose phenomenon,based on the characteristics of brake shoe pin revoked shaft connection structure,bolt tightening torque is checked with calculation and bolt quality inspection control is investigated.The brake shoe revoked shaft installation process rules and enforcement is examined,which further concluded that pin screw hole residual rust-preventative oil decreases the intensity of locking glue,which is the root cause of the loose fault of brake shoe pin revocation shaft.The correctness of the inference is verified by the relevant simulation experiments.In view of the fault cause,the optimization measures such as using high strength thread locking glue,adding double self-locking gasket and increasing tightening torque are put forward.The results of relevant tests and applications show that the optimized measures can effectively avoid the occurrence of similar faults.

关 键 词：城市轨道交通 车辆 转向架 踏面制动单元 闸瓦吊销轴脱落故障 

分 类 号：U270.331[机械工程—车辆工程]