Experiment Research on Emergency Stop Vibrations of Key Components in the Friction Vertical Lifting System

Abstract

In order to analyze emergency stop vibration of the friction vertical lifting system under different loads, a loading experiment was carried out, and the longitudinal vibration characteristics of the carriage, frame, and steel rope were measured during the emergency braking process of an elevator. Accordingly, it is found that the load mass does not affect the peak deceleration value of the car frame and the wire rope during downwards emergency stop. Then, vertical vibration is explored using the time-varying vibration analysis theory. The obtained results show that when analyzing the vibration of objects on both sides of the traction wheel, the deceleration of the wire rope on both sides of the traction wheel are not equal, and the influence of the pressure change during the traction-wheel friction should be considered in calculations. This article may provide a reference to calculate the steel rope tension of the elevator and mine hoist.

Active Control System Applied to Vibration Level Control in High-Speed Elevators

“…In [11][12][13][14][15][16], studies are presented that revealed that vibration during the elevator emergency braking process directly affects the performance of the elevator traction system, thus affecting the safety, reliability, and comfort of passengers. In [17], results are presented that demonstrate that the vertical vibrations of the elevator traction system are maximized during the braking operation.…”