Dynamic behavior of elevator compensating sheave during buffer strike

5th Symposium on the Mechanics of Slender Structures

物理学;力学

Watanabe, S.^1 ; Okawa, T.^2

Advanced Technology RandD Center, Mitsubishi Electric Corp., 8-1-1 Tsukaguchi Honmachi, Hyogo, Amagasaki, Japan^1

Inazawa Works, Mitsubishi Electric Corp., 1 Hishi-machi, Inazawa, Aichi, Japan^2

关键词: 2 degree of freedoms;    Constraint forces;    Dynamic behaviors;    Dynamic tension;    Elevator systems;    Maximum constraints;    Vibration model;    Vibration modes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/721/1/012015/pdf
DOI  :  10.1088/1742-6596/721/1/012015

学科分类：力学，机械学

来源: IOP

【 摘 要 】

This paper shows an elevator dynamic model that calculates the compensating sheave motion during a buffer strike. Our equivalent 2-degree-of-freedom vibration model of an elevator system, which consists of a car, a compensating sheave, and compensating ropes, can evaluate the dynamic tension of the compensating ropes caused by a buffer strike. The constraint force, which restricts the upward motion of the compensating sheave, is estimated from the dynamic rope tension. The constraint force is represented by the summation of two vibration modes and is the function of the limited distance of the compensating sheave's upward movement. Our formula, which evaluates the maximum constraint force, shows that a shorter limited distance of the compensating sheave increases the constraint force.