城市轨道交通某型车辆轴温检测系统误报隐性故障问题研究  

Research on Problem of Certain Urban Rail Transit Vehicle Misreporting Hidden Failures in Axle Temperature Detection System

作　　者：邱作成 刘杰 张艳明 夏鹏 QIU Zuocheng;LIU Jie;ZHANG Yanming;XIA Peng(CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China)

机构地区：[1]中车长春轨道客车股份有限公司,长春130062

出　　处：《城市轨道交通研究》2021年第1期207-209,共3页Urban Mass Transit

摘　　要：某型城市轨道交通车辆由A型轴温检测系统升级为B型轴温检测系统后,中央控制单元数据中频繁报出头车3/4轴头CAN1/2路隐性故障,通过更换端部接线箱连接器相应公、母针可解决故障问题。通过对连接器内部针位排布规律、连接器插针插拔力检验数据、连接器安装结构进行综合分析,以及对B型轴温系统工作原理和安装结构进行分析,判断是由于连接器线缆无可靠固定、连接器受车体振动影响、内部插针插拔力不足造成接触电阻异常,进而引起误报隐性故障问题。优化解决方案为:在车下线槽盖板上焊接固定支架,对车下的以连接器悬线进行固定,避免振动对连接器的影响。After the axle temperature detection system of a certain type of urban rail transit vehicle is upgraded from type A to type B,the hidden fault of 3/4 axle CAN 1/2 circuit of the first vehicle is frequently reported in the data of the central control unit,and the fault problem is solved by replacing the corresponding male and female pins of the terminal junction box connector.Through comprehensive analysis of the arrangement rule of the pin position inside the connector,the test of the insertion and removal force of the pin,the installation structure of the connector,and the working principle and the installation structure of B type axle temperature detection system,it is judged that the contact resistance is abnormal due to lack of reliable fixation of the connector cable,connector being affected by vehicle vibration,and insufficient insertion and removal force of the pin inside,which leads to the problem of false alarming hidden fault.The optimization solution is derived to be,welding the fixed bracket on the cover plate of the vehicle downlead groove,and fixing the suspension wire passing through the connector to avoid the influence of vehicle vibration on the use of the connector.

关 键 词：城市轨道交通 车辆 轴温检测系统 故障误报 

分 类 号：U260.3311[机械工程—车辆工程]