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1发现隐患2012年9月,笔者对同一厂家生产的同型号的2台曳引式货梯进行定期检验。检验过程中,进行的各项试验均能满足《电梯监督检验和定期检验规则——曳引与强制驱动电梯》的规定。但是,在进行空载曳引力试验时,当轿厢触发上极限开关后,短接上极限开关,电梯无法启动运行。根据现场情况,初步判断是电梯安全回路故障,电梯主接触器线圈无法得电,导致电梯无法启动。经过排查之后,电梯安全回路正
1 found hidden In September 2012, the author of the same manufacturer to produce the same type of 2 hoisting freight ladder for regular inspection. During the inspection process, all the tests conducted can meet the requirements of “Rules for Supervision and Inspection of Escalators and Periodic Inspection - Traction and Forced-Drive Elevators”. However, during the no-load traction test, when the car triggers the upper limit switch, short-circuit the limit switch and the elevator can not start running. According to the site situation, the initial judgment is that the safety circuit of the elevator is faulty, the main contactor coil of the elevator can not get electricity, and the elevator can not be started. After investigation, the elevator safety circuit is positive