Optimization of hoisting parameters in a multi-rope friction mine hoist based on the multi-source coupled vibration characteristics of hoisting catenaries

Abstract

To avoid catenary collision in a multi-rope friction mine hoist, in this study, the relevant hoisting parameters based on the multi-source coupled vibration characteristics of hoisting catenaries are optimized. First, the multi-source coupled vibration characteristics of hoisting catenaries were investigated based on an established theoretical model, indicating that the hoisting acceleration is the weak coupled hoisting parameter, and the constant hoisting velocity, hoisting load, and catenary length are the strong coupled hoisting parameters. Subsequently, a safety threshold of 50 mm for the transverse amplitude of a catenary in this work was defined and the criterion of parameter optimization was established. Finally, by applying the multi-source coupled vibration model of the catenary, the strong coupled hoisting parameters, the constant hoisting velocity, the hoisting load, and the length of the catenary were optimized to make the transverse amplitude of the catenary less than the safety threshold of 50 mm. The proposed methods of parameter optimization may be new constraints to determine the optimal hoisting parameters in the design or maintenance phase of the floortype multi-rope friction mine hoist.

Dynamic Modeling and Analysis of a Mine Hoisting System with Constant Length and Variable Length

“…Equations (8) and 9are the axial governing equations of the constant-length cable and the variable-length cable in coal mine hoist, respectively. e axial vibrational displacements of the constantlength cable and the variable-length cable are coupled at the sheave.…”

“…A method for installing two guide ropes under multiboundary constraints is proposed [7]. e parameter optimization criterion is proposed for the suspension rope collision phenomenon of the multirope friction hoist [8].…”

Vision-based transverse vibration displacement measurement of hoisting vertical ropes in mine hoists

“…If the vibration displacements of two adjacent vertical ropes in the same plane are very large, it may make them collide to each other. 1 This is an extremely dangerous state, which affects the safety of hoist and aggravates hoisting ropes, shortening their service life. For studying the vibration principle and vibration suppressing methods of flexible structures, 2,3 first of all, it needs to measure their vibration parameters.…”