我车间原有的桥式起重机提升限制器,是利用小纲绳吊在行程开关上的重锤闭合开关。钩头上升,顶住重锤,使小绳松开,打开行程开关,断电限位。在使用过程中,我们感到这种限制器有下述缺点;一、重锤由铁环与钩头钢绳相连,易受钩头钢绳磨损;二、系重锤的小绳有时断裂,重锤掉下,发生事 My original crane crane lifting limiter is the use of small rope hanging in the limit switch on the heavy hammer closed switch. Hook up, withstand heavy hammer, the rope loose, open the travel switch, power limit. In use, we feel that this limiter has the following shortcomings: First, the hammer by the ring and the hook head steel rope connected, vulnerable to the hook head rope wear; Second, the weight of the rope sometimes broken rope, heavy Hammer fell, something happened