改革开放以来,随着我国经济的飞速发展,城市建设的步伐也是日新月异,高楼大厦拔地而起。电梯作为不可缺少的垂直运输设备,在人们工作、生活中占有越来越重要的位置。人们在注重效率享受舒适的同时,也对安全防护问题提出了更高的要求。对电梯有所了解的人都知道在垂直升降电梯的众多安全防护措施中安全钳尤其重要是必不可少的装置,但却往往忽视了对其执行机构——限速器的关注。如果把安全钳比做是汽车的刹车盘,限速 Since the reform and opening up, with the rapid economic development in our country, the pace of urban construction is also changing with each passing day. As an indispensable vertical transportation equipment, elevators occupy more and more important positions in people’s work and life. While people pay attention to efficiency and comfort, they also put forward higher requirements on security protection. Anyone who knows the elevator knows that safety gear is an essential element in many of the safety precautions for vertically moving elevators, but often overlooks the concern with its actuator, the governor. If the safety gear is compared to the car’s brake disc, speed limit