电梯制动试验保护装置执行机构制动元件研究  

Research on the braking element of the actuator of the protection device in the elevator braking test

作　　者：井德强 刘涛 王刚 Jing Deqiang;Liu Tao;Wang Gang

机构地区：[1]陕西省特种设备检验检测研究院,西安710048

出　　处：《起重运输机械》2022年第17期36-41,55,共7页Hoisting and Conveying Machinery

基　　金：陕西省市场监督管理局科技计划项目(2020KY05)。

摘　　要：为防止电梯制动试验过程中因轿厢失控滑移引起的安全事故,文中针对额定速度在0.63~3.5 m/s之间的曳引式乘客电梯,设计了一种基于电梯失控滑移距离而触发的轿厢安全钳动作先导保护装置。通过对保护装置执行机构4个工作阶段的功能分析,以及制动元件自锁条件和制动可靠性分析,确定了可靠制动条件,即楔块的楔形角取值不应大于楔块长直角面和斜面的摩擦角之差,为制动元件的结构设计提供了理论依据;通过对前3阶段制动元件的动力学分析,完成了制动弹簧的设计,计算出了执行机构各工作阶段的响应时间,为执行机构响应速度的计算提供了理论参考。To prevent the safety accident caused by the runaway sliding of the car in the elevator braking test,a pilot protection device of the car safety clamp action triggered by the runaway sliding distance of the elevator was designed for the traction passenger elevator with the rated speed of 0.63-3.5 m/s.By analyzing the functions of the actuating mechanism of the protection device in four working stages,as well as the self-locking condition of the braking element and the reliability analysis of braking,the reliable braking condition was determined,that is,the wedge angle of the wedge should not be greater than the difference between the friction angle of the long right angle surface and the inclined plane of the wedge,which provides a theoretical basis for the structural design of the braking element.Through the dynamic analysis of the braking elements in the first three stages,the braking spring was designed,and the response time of each working stage of the actuator was calculated,which provides a theoretical reference for the calculation of the response speed of the actuator.

关 键 词：电梯 制动试验 保护装置 制动元件 自锁 响应速度 

分 类 号：TU857[建筑科学]