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An ultra-deep shaft large traction friction lifting system and method

A technology of friction lifting and hoisting system, which is applied in hoisting device, clockwork mechanism, etc. It can solve the problems that large-diameter steel wire ropes are not easy to manufacture and process, unfavorable for the safe operation of the lifting system, and affect the service life of steel wire ropes, etc., so as to improve safety and reliability. , the effect of stress fluctuation reduction and enveloping angle increase

Active Publication Date: 2019-06-28
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The multi-rope friction hoisting system is an important link in the mine production process and is widely used in the modern mining industry. The existing shaft tower friction hoisting system basically connects each hoisting wire rope to two hoisting containers after winding the friction wheel once. The enclosing angle formed is generally about 180°. When the shaft tower friction lifting system is applied to the lifting of an ultra-deep shaft, the breaking force under the condition of a small number of wire ropes cannot meet the existing safety factor requirements, and meets the safety factor requirements. The diameter of the tail rope required is relatively large, and the large-diameter steel wire rope is not easy to manufacture and process, and the quality of the steel wire rope increases after the diameter increases, and at the same time, the traction force required to ensure the normal operation of the system is relatively large. High and large-diameter wire ropes will cause large stress fluctuations, which will affect the service life of the wire rope and is not conducive to the safe operation of the lifting system

Method used

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  • An ultra-deep shaft large traction friction lifting system and method
  • An ultra-deep shaft large traction friction lifting system and method
  • An ultra-deep shaft large traction friction lifting system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Take six wire ropes as an example, such as figure 2 and image 3 As shown, by setting six large grooves on the friction roller, two wire ropes can be wound inside, and each hoisting wire rope wraps twice around the large grooves opened on each friction roller, which increases the encirclement of the lifting system. horn. The resulting enveloping angle is 180°×(2n−1)=540°. Wherein n is the number of winding steel wire ropes of steel wire ropes in each groove.

Embodiment 2

[0039] Take six wire ropes as an example, such as Figure 4 and Figure 5 As shown, by providing multiple large grooves on the friction roller, three turns of wire rope can be wound inside, and each hoisting wire rope winds three times in the large groove provided on each friction roller, which increases the enveloping angle of the lifting system. The resulting enveloping angle is 180°×(2n−1)=900°. Wherein n is the number of winding steel wire ropes of steel wire ropes in each groove.

[0040]When the left hoisting container is lifted and the right hoisting container is lowered, the hoisting wire rope on the left is lifted upwards, and the hoisting wire rope on the right is lowered downwards. The wire rope on the left not only moves upwards in the vertical direction, but also tends to move to the left in the horizontal direction. Since the structure of the large groove can be arc-shaped, that is, the left side in the groove is high and the right side is low, such as Figure...

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Abstract

The invention discloses a super deep vertical shaft large-traction friction lifting system and method. A plurality of large grooves are formed in a friction roller, the interior can be wound with tworings of steel wire ropes, each steel wire rope is wound in each large groove formed in the friction roller two or more times, and therefore the surrounding angle of the lifting system is increased. By means of the super deep vertical shaft large-traction friction lifting system and method, a simple structure is adopted, the traction and tail role diameter which are needed by normal running of thelifting system are guaranteed, and the manufacturing cost and the machining difficulty of the steel wire ropes are reduced. The multiple grooves are formed on the basis of an existing shaft tower type multi-rope friction lifting system, two rings of steel wire ropes can be wound inside, each steel wire rope is wound in each large groove formed in the friction roller two or more times, and therefore the surrounding angle formed by each steel wire rope is 180 degree*(2n-1), wherein n is the steel wire rope winding number of the steel wire ropes in each large groove. Stress fluctuation in the lifting system is reduced, the service life of the steel wire ropes is prolonged, and safety of the lifting system is improved.

Description

technical field [0001] The invention belongs to the technical field of mine hoisting, and in particular relates to a large traction force friction lifting system and method for an ultra-deep vertical shaft, in particular to a large traction force friction lifting system with an increased enveloping angle. Background technique [0002] The multi-rope friction hoisting system is an important link in the mine production process and is widely used in the modern mining industry. The existing shaft tower friction hoisting system basically connects each hoisting wire rope to two hoisting containers after winding the friction wheel once. The enclosing angle formed is generally about 180°. When the shaft tower friction lifting system is applied to the lifting of an ultra-deep shaft, the breaking force under the condition of a small number of wire ropes cannot meet the existing safety factor requirements, and meets the safety factor requirements. The diameter of the tail rope required...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/30B66D1/54B66D1/56
CPCB66D1/30B66D1/54B66D1/56
Inventor 朱真才张宁曹国华周公博彭维红彭玉兴李伟
Owner CHINA UNIV OF MINING & TECH