摩擦提升防滑系统制动性能研究

Research on braking performance of friction lifting anti-skid system

以摩擦轮提升机中的绳轮机构为研究对象,构建其数学模型并推导得到经典欧拉公式。基于摩擦轮提升机的动力学特性如绳轮包角、摩擦系数及加减速过程的力学分析,建立了摩擦轮提升机防滑条件的数学模型,根据静张力比系数判断系统的防滑状态及合理的紧急减速度阈值范围。利用MATLAB对解析模型进行仿真分析,得到给定减速度条件下静张力比系数与绳轮摩擦系数及包角的关系,可用于判断不同绳轮结构在紧急制动下的防滑状态。

Taking the rope wheel mechanism in the friction wheel hoist as the research object,this paper establishes its mathematical model and derives the classical Euler formula.According to the dynamic characteristics of the friction wheel hoist,such as the sheave wrap angle,the friction coefficient and the mechanical analysis of the acceleration and deceleration process,it establishes a mathematical model of the sliding condition of the friction wheel hoist,and judges the sliding state of the system and reasonable according to the static tension ratio coefficient,the emergency deceleration threshold range.The analytic model is simulated and analyzed by MATLAB,and the relationship between static tension ratio coefficient and sheave friction coefficient and wrap angle under given deceleration conditions is obtained,which can be used to judge the anti-skid state of different sheave structures under emergency braking.