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1.故障现象1台SJX5470TXJ550型修井机发动机启动后,所有仪表指示值正常,操作人员进行加、减挡操作也正常。但是在进行井口作业时,操作人员将吊钩加上负载后挂入Ⅲ挡,吊钩却仅以Ⅰ挡速度缓慢提升,且换挡塔锁挡指示灯闪烁。当吊钩快到井架顶端时松开油门,吊钩仍慢速上升。断开滚筒离合器并拉下滚筒制动,吊钩才逐渐停止上升。随后放下吊钩挂入Ⅲ挡继续作业,速度仍是Ⅰ挡。重启发动机,故障依旧。
1. Symptom 1 SJX5470TXJ550 workover rig engine started, all instrumentation values are normal, the operator to add, the downshift operation is also normal. However, during wellhead operation, the operator hooks the hook into the third gear after adding the load, and the hook only slowly ramps up at the first gear speed, and the shift tower lock indicator flashes. When the hook is near the top of the derrick, the throttle is released and the hook still rises slowly. Disconnect the drum clutch and pull down the drum brake, the hook gradually stopped rising. Then put down the hook into the III block to continue homework, the speed is still Ⅰ block. Restart the engine, the fault still.