螺杆式上升限位器是单梁桥式起重机重要的安全装置。它的工作机理是：由钢丝绳在卷筒上的缠绕引发导绳器的运动，从而带动了与导绳器相连的螺杆式上升限位器螺杆的运动，再通过与螺母一起的撞头，去触发开关触头来断电。在起重机的安装、使用过程中，常常出现一些问题，造... Screw-type lifting limiter is an important safety device for single-girder overhead traveling crane. Its working mechanism is: the winding of the steel wire rope on the reel leads to the movement of the guide rope, so as to drive the movement of the screw-type rising stopper screw connected with the guide rope rope and then through the head with the nut Trigger switch contacts to power off. In the crane installation, the use of the process, there are often some problems, made ...