Analysis of transverse vibration of wire rope in flexible hoisting system

Abstract

Taking the flexible hoisting system as the research object, the transverse vibration mathematical model of the steel wire rope of the winding hoisting system is established, and the transverse vibration displacement, velocity and acceleration of the steel wire rope at 18 m away from one end of the wire rope under the sine excitation at other end is obtained through the comparison and verification of the results from the mathematical model, mechanical model and experiment. The results show that: for the length of the wire rope of 20 m, under the sine excitation at the end of amplitude of 0.002 m and frequency of 20 Hz, the transverse vibration displacement at 2 m from one end of the wire rope with length of 20 m is basically between -0.005 m and 0.005 m, the transverse vibration velocity at 2 m from one end of the wire rope is basically between -0.04 m/s and 0.04 m/s, and the transverse vibration acceleration of the wire rope is basically between -0.5 m/s 2 and 0.5 m/s 2 . And the transverse vibration displacement decreases near the end, meanwhile the transverse vibration frequency increases with the reduction of length of vertical section of wire rope.

A data-driven approach for modifying the rope dynamics model of the flexible hoisting system

“…12 Wu et al employed ANSYS FLUENT 14.5 to study the vibration of the rope of conveyances under different speeds of ventilation air. 13 The results indicated that the ventilation affected the horizontal displacement of conveyance greatly. However, this research simulated the effect of different ventilation air speeds on the rope without experimental verification.…”

“…9 Wu et al established the transversal vibration dynamic model of the steel rope of the hoisting system, and obtained the transverse vibration displacement of the rope at a point in the rope under the sine excitation at the end of the rope. 10 It concluded that the transverse vibration frequency increases when the length of the rope reduces. Guo et al investigated the nonlinear dynamic responses of the rope under periodic excitation in the hoisting system with experiments of different periodic excitation frequencies.…”

Research on the Flutter Characteristics of Traction Wire Rope in Full-Scale Wind Turbine Blade Static Loading Test

“…The intensification of the transverse displacement at the sheave tangent point increases the instability of the friction force. Wu et al [8][9]used Galerkin's discretization method to obtain the transverse vibration displacements, velocities, and accelerations of the wire rope in the hoisting system of the deep mine. The experiments demonstrated that as the external excitation frequency increases, the transverse vibration displacement of the wire rope also increases.…”

The Influence of Rope Guide Sleeve Clearance on the Lateral Oscillation of Rope Guided Conveyance in Mine Hoist System caused by the Aerodynamic Force

“…Compared to a fixed guide hoisting system, a rope guide hoisting system has some advantages, such as less resistance to ventilation air flows, shorter installation times, lower capital costs and reduced maintenance requirements [1][2][3]. however, affected by the mine ventilation, tension and conveyance loading quality, etc., the lateral oscillation behaviour of rope guided conveyances is so complex that the rope guided hoisting system hasn't been understood thoroughly [4][5][6]. There are few systematic research reports, and the rope guided hoisting system is lacking a complete design guideline [7].…”