Mine vertical shaft ultra-deep large-load lifting system and counterweight distribution method thereof

Abstract

A mine vertical shaft ultra-deep large-load lifting system comprises lifting steel wire ropes, a friction wheel, guide wheels, secondary sheaves, a container and a balance rope. The left and right secondary sheaves are symmetrical in the left-right direction about the center of the friction wheel and are staggered in the front-back direction, and the horizontal heights of the left and right secondary sheaves are both higher than that of the friction wheel. The horizontal heights of the left and right guide wheels are both lower than that of the friction wheel. The horizontal position, in contact with the lifting steel wire ropes, of the left guide wheel corresponds to the gravity center suspension point of the container. The horizontal position, in contact with the lifting steel wire ropes, of the right guide wheel corresponds to the gravity center suspension point of a counter weight. The part, above the container, of each lifting steel wire rope is sequentially wound around the leftguide wheel, the left secondary sheave, the friction wheel, the left secondary sheave and the friction wheel and is connected to the counter weight through the right guide wheel. The part, above the counter weight, of each lifting steel wire rope is sequentially wound around the right guide wheel, the right secondary sheave, the friction wheel, the right secondary sheave and the friction wheel andis connected to the container through the left guide wheel. The lower end of the container and the lower end of the counter weight are connected through the balance rope and closed. The mine verticalshaft ultra-deep large-load lifting system can achieve ultra-deep large-load conveyance and avoids excessively large stress fluctuation in the operation process.

Description

technical field [0001] The invention relates to a mine shaft hoisting system, in particular to a mine shaft ultra-deep distance large-load hoisting system and a counterweight distribution method thereof, which belong to the technical field of mine hoisting. Background technique [0002] Due to the change of wire rope length during operation and the change of load value during loading and unloading, the mine shaft hoisting system will cause stress fluctuations, as well as the requirements for the anti-skid safety factor of friction wheels, which limit the depth that can be lifted in mine production and the single-time capacity. The load of loading and transportation makes the production efficiency of coal in the mine not high, and because the number of stress cycles that the steel wire rope can bear is limited, the large stress fluctuation will cause the safety of the lifting system to be low, which is not conducive to the safe and efficient production of the mine. Contents ...

AI Technical Summary

Problems solved by technology

[0002] Due to the change of wire rope length during operation and the change of load value during loading and unloading, the mine shaft hoisting system will cause stress fluctuations, as well as the requirements for the anti-skid safety factor of friction wheels, which limit the depth that can be lifted in mine production and the single-time capacity. The load of loading and transportation makes the production efficiency of coal in the mine not high, and because the number of stress cycles that the steel wire rope can withstand is limited, the large stress fluctuation will cause the safety of the lifting system to be low, which is not conducive to the safe and efficient production of the mine

Images