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目前,在SC型施工升降机上广泛采用的齿轮锥鼓渐进式防坠安全器,其工作原理是:当吊笼意外下坠,防坠安全器随着吊笼一起加速下落,齿轮轴的转速越来越快,当达到动作速度时,离心限速装置就带动锥鼓制动轮与齿轮轴一同转动。此时,齿轮轴带动制动轮开始转动。当制动轮被迫转动时,与锥鼓制动轮螺杆部分通过螺纹副联接的压紧螺母就有跟随转动的趋势。由于与压紧螺母联接的阻转块限制了压紧螺母的周向转动,此时压紧螺母只能随锥鼓制动轮的转动
At present, widely used in construction SC jacking cone taper progressive anti-fall safety device, the working principle is: When the cage accidental fall, anti-fall safety device along with the cage to accelerate the whereabouts of the gear shaft speed more The faster the centrifugal speed limiter drives the cone drum brake wheel to rotate with the gear shaft when the speed is reached. At this moment, the gear shaft drives the brake wheel to start to rotate. When the brake wheel is forced to rotate, the clamping nut, which is connected to the screw part of the drum of the drum by means of the screw thread, tends to follow. Since the blocker coupled with the compression nut limits the circumferential rotation of the compression nut, the compression nut can only rotate with the drum brake drum