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A kind of extrusion and frictional energy-absorbing bolt

A friction-type bolt technology, which is used in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of low bearing capacity of extendable bolts, unbalanced constant resistance and large deformation functions, etc., and achieve good support Protective effect, low cost, high bearing capacity

Active Publication Date: 2016-08-24
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides an extruded and frictional energy-absorbing anchor to solve the problems of low bearing capacity, unbalanced constant resistance and large deformation functions of the existing sleeve-type extensible anchor, It meets the characteristics of large deformation of the surrounding rock of the roadway, and is a constant resistance energy-absorbing bolt with high bearing capacity, structure, safety and reliability.

Method used

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  • A kind of extrusion and frictional energy-absorbing bolt
  • A kind of extrusion and frictional energy-absorbing bolt
  • A kind of extrusion and frictional energy-absorbing bolt

Examples

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Effect test

Embodiment 1

[0019] Example 1, such as figure 1 As shown, an extruded, frictional energy-absorbing anchor includes an anchor body 4 and a sleeve 6, an energy-absorbing lining pipe 5 is arranged inside the sleeve 6, and the end of the sleeve 6 is fixedly connected to the end clip 7, The head end is fixedly connected with the anti-entry nut 1; the head end of the anchor rod body 4 is placed in the sleeve 6 outside the energy-absorbing lining tube 5, and the end passes through the energy-absorbing lining tube 5 in turn, and the end clamp 7 is placed in the end clamp 7, the squeeze and frictional energy-absorbing anchor also includes a pre-tightening nut 2 and an anchor tray 3, the anchor tray 3 is set on the head end of the sleeve 6, and the pre-tightening nut 2 is set on Between the anchor rod tray 3 and the anti-ingress nut 1, it is placed outside the sleeve 6 and threaded with the sleeve 6; as image 3 As shown, the sleeve 6 is an outer circle inner circle sleeve, such as image 3 As sho...

Embodiment 2

[0025] Example 2, such as figure 2 As shown, an extruded, frictional energy-absorbing anchor includes an anchor body 4 and a sleeve 6, an energy-absorbing lining pipe 5 is arranged inside the sleeve 6, and the end of the sleeve 6 is fixedly connected to the end clip 7, The head end is fixedly connected with the anti-entry nut 1; the head end of the anchor rod body 4 is placed in the sleeve 6 outside the energy-absorbing lining tube 5, and the end passes through the energy-absorbing lining tube 5 in turn, and the end clamp 7 is placed in the end clamp 7, the squeeze and frictional energy-absorbing anchor also includes a pre-tightening nut 2 and an anchor tray 3, the anchor tray 3 is set on the end of the anchor body 4, and the pre-tightening nut 2 is set Outside the anchor body 4 between the anchor tray 3 and the end of the anchor body 4, and threaded with the anchor body 4; as Figure 4 As shown, the sleeve 6 is a hexagonal sleeve with an outer circle and an inner hexagon, a...

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PUM

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Abstract

The invention discloses an extrusion and friction type energy absorption anchor rod which comprises an anchor rod body and a sleeve. An energy absorption lining pipe is arranged in the sleeve, the tail end of the sleeve is fixedly connected with a tail end clamp, and the head end of the sleeve is fixedly connected with a screwing-preventing nut. The head end of the anchor rod body is arranged in the sleeve outside the energy absorption lining pipe, and the tail end of the anchor rod body sequentially penetrates through the energy absorption lining pipe and the tail end clamp to be arranged outside the tail end clamp. The extrusion and friction type energy absorption anchor rod further comprises a pre-tightening nut and an anchor rod tray, the problem that an existing sleeve type extensible anchor rod is low in bearing capacity, constant in resistance and unbalanced in large-deformation function is solved, the large-deformation requirement of a roadway surrounding rock is met, and the extrusion and friction type energy absorption anchor rod is high in bearing capacity, simple, safe and reliable in structure, constant in resistance, easy to assemble, low in cost and quick and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of safety support in underground projects such as mining engineering, water conservancy and hydropower engineering, and tunnel engineering, and relates to a support structure for large-deformation coal and rock mass, in particular to an extruding and frictional energy-absorbing bolt. Background technique [0002] In the engineering support process of mine engineering, water conservancy and hydropower engineering, tunnel engineering, etc., bolt is a kind of support equipment widely used; with the continuous increase of mining depth and large-scale underground engineering construction, the geological conditions are becoming more and more serious. The more complex the roadway is, the surrounding rock of the roadway often shows the characteristics of high stress and large deformation, while the traditional bolt elongation is low, so it is difficult to apply in the support of large deformation of the surrounding r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00
CPCE21D21/0033E21D21/004
Inventor 潘一山王爱文孟村影李忠华李国臻曾祥华
Owner LIAONING TECHNICAL UNIVERSITY
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