ZDJ9转辙机自动开闭器接点电阻阻值研究应用

Research and Application of Contact Resistance Value of Automatic Lid Actuator of ZDJ9 Switch Machine

文章针对因自动开闭器导致的ZDJ9转辙机故障频发问题,从不同支路接点在表示电路与启动电路承担的功能着手,通过分析电阻对表示继电器电气特性、时间特性与电机的功率特性影响,利用仿真软件与滑动变阻器模拟试验,得出接点电阻的参考标准。在保留充足安全裕量的情况下,得出检修标准为接点电阻≤3Ω,整治阈值范围为30Ω<测试值<50Ω,更换阈值为测试值≥50Ω,并优化了检修方式,确定了直流电压监测和电流曲线监测接点电阻的方法。文章以厦门地铁已开通的3条线路为例,应用该检修标准与监测方法进行验证,发现由自动开闭器引发的转辙机故障率下降100%,信号设备可靠性得到显著增强。

In response to the frequent failure of ZDJ9 switch machine caused by automatic lid actuator,this article starts with the functions of different branch contacts in the indication and starting circuits.In order to study the the influence of resistance on the electrical characteristics,time characteristics,and motor power characteristics of the indication relay,simulation software and sliding rheostat simulation tests are used to obtain reference standards for contact resistance.While retaining sufficient safety margin,the inspection standard was contact resistance≤3Ω,the rectification threshold range was 30Ω<test value<50Ω,and the replacement threshold was test value≥50Ω.The inspection method was optimized,and methods for monitoring DC voltage and current curve monitoring of contact resistance were determined.The article applies the above methods to verify three lines that have been opened in Xiamen Metro..It is found that the failure rate of switch machines has reduced by 100%,and the reliability of signal equipment has been greatly enhanced.