我段有七十年代生产的251电动落轮机三台,是机车检修的关键设备,在生产中发挥着重要作用。它具有卸装轮对行动迅速、安全可靠等特点。但是,这几年由于设备利用率提高,走行系统经常出现问题,严重影响了生产进度,加大了维修量,增加了维修成本。因此.我们对该故障进行分析,找出原因,并合理地解决。一、故障现象及原因分析当机车轮对需要更换和修理时,落轮机行至规定位置,机车被拆轮对下部对准升降架平台。轮对被拆下放稳后,升降架携轮对下降无障碍处,落轮机开始沿轨道移动,机车轮对被取出。但是,移动过程中经常出现走行电动机转不动现象,据统计每月发生至少 I have seventy-year-stage production of 251 electric rocket three units, locomotive maintenance is the key equipment, production plays an important role. It has the unloading wheel action fast, safe and reliable. However, due to the improvement of equipment utilization in recent years, walking systems often have problems that have seriously affected the progress of production, increased the amount of maintenance and increased maintenance costs. Therefore, we analyze the fault to find out the reason and solve it reasonably. First, the breakdown phenomenon and reason analysis When the locomotive wheel pair needs to be replaced and repaired, the locomotive machine row to the specified position, the locomotive was demolished the lower part of the wheel alignment platform. After the wheelset has been disassembled and stabilized, the lifting carriage carries the wheel to the drop-free place, the wheel dropping machine starts to move along the track, and the wheelset of the locomotive is taken out. However, the movement of the motor often appear in the process of immobility, according to statistics every month, at least