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我车间原有的桥式起重机提升限制器,是利用小钢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:1.重锤由铁环与钩头钢绳相连,易受钩头钢绳磨损;2.系重锤的小绳有时断裂,重锤掉下,发生事故;3.小绳与钩头钢绳缠绕,限制失灵,当司机注意不够时,钩头上天,拉断钩头钢绳,
The original bridge crane lifting limiter in my workshop is a heavy hammer closing switch that hangs on a limit switch with a small steel rope. The hook head rises and withstands the weight, releasing the small rope, opening the limit switch, and cutting off the power. During use, we feel that this type of limiter has the following disadvantages: 1. The weight is connected to the steel wire of the hook head by the iron ring, which is vulnerable to the wear of the hook wire; 2. The small string of the weight is sometimes broken and heavy. The hammer fell and an accident occurred; 3. The small rope and the hook-head wire rope are wound to limit the malfunction. When the driver pays insufficient attention, he hooks the head to heaven and breaks the steel wire at the hook end.