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Statically indeterminate equal-strength support anchor cable locking mechanism and method

A technology for supporting anchor cables and locking mechanisms, which is applied in the direction of earthwork drilling, bolt installation, mining equipment, etc., can solve problems such as caving and roof separation, achieve good results, improve anchor cable support force, Guaranteed safety effect

Inactive Publication Date: 2011-08-10
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the occurrence of such incidents and ensure the safety of underground workers, it is necessary to solve the problem of roof separation and collapse caused by part of the anchor cable breaking in the support, resulting in the decrease of the anchor cable pre-tightening force

Method used

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  • Statically indeterminate equal-strength support anchor cable locking mechanism and method
  • Statically indeterminate equal-strength support anchor cable locking mechanism and method
  • Statically indeterminate equal-strength support anchor cable locking mechanism and method

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Embodiment Construction

[0010] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0011] figure 1 As shown, the supporting anchor cable locking mechanism of the present invention is mainly composed of a cylinder bowl 2 with a disc-shaped bottom, a lock sleeve 3 and a spring 4 clamping an anchor cable 1 composed of multiple strands of steel wire, and a cylinder with a disc-shaped bottom. There is a cylindrical hole 5 in the through hole at the bottom of the bowl 2, and a tapered hole 6 is opened above the cylindrical hole 5. The lock sleeve 3 is composed of four-petal cone blocks. The tapered hole 6 matches, and the spring 4 is located in the cylindrical hole 5 in the cylinder bowl 2, and pushes against the bottom of the lock sleeve 3.

[0012] The supporting anchor cable locking method of the present invention: After the anchor cable 1 and the drug coil are pushed into the drilled hole by the anchor cable drill rig and the stirring is c...

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Abstract

The invention relates to statical indetermination equal-strength support anchor cable locking mechanism and a method thereof; the mechanism comprises a cylindrical bowl with a dished bottom, a lock sleeve arranged in the cylindrical bowl and clamping an anchor cable, and a spring arranged under the lock sleeve; the matching surface of the lock sleeve and the cylindrical bowl is a conical surface,and the lock sleeve is formed by the combination of four conical blocks. The cylindrical bowl, the lock sleeve and the spring of the anchor cable locking mechanism are sequentially sheathed on the anchor cable which is fixed by a stirring cartridge, the anchor cable pressed in the lock sleeve with the four conical blocks is divided and tightened along four directions so as to be connected with other anchor rods or anchor cables in the support, and when the anchor cable is broken in the high-stress area, as the lock sleeve arranged in the cylindrical bowl tightly wedges the anchor cable supported in the terrane, the top plate is prevented from delamination and collapse, the support force is greatly improved, and the safety of the underground personnel is effectively guaranteed; and the mechanism has simple structure, easy manufacturing technique, convenient use, reliable performance, good effect, and wide practicability to deep support.

Description

technical field [0001] The invention relates to the field of rock formation support, in particular to an anchor cable locking mechanism and method for super-statically indefinite equal-strength support suitable for high-stress areas of rock formations. Background technique [0002] With the deepening of coal mines, the ground pressure and mine pressure increase sharply. In many high-stress areas, the failure of ordinary anchor net cable support occurs, and even the support anchor rod is cut or the anchor cable is partially broken. The event that the roof separated from the layer collapsed and injured people. In order to solve the occurrence of such incidents and ensure the safety of underground workers, it is necessary to solve the problem of roof separation and collapse due to the drop of anchor cable pretension caused by partial breakage of anchor cables in support. Contents of the invention [0003] The purpose of the present invention is to overcome the problems exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00
Inventor 马占国缪协兴张帆杨建立张金亮赵玉成李强李顺才马继刚潘银光兰天朱发浩孙凯
Owner CHINA UNIV OF MINING & TECH
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