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Mining anchor rod

A bolt and mine-used technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problem of low prestress of bolts, easy rotation or displacement of arched backing plates, tensile strength and pull-out resistance Poor and other problems, to achieve the effect of increasing prestress, preventing rotation or displacement, and improving tensile force

Inactive Publication Date: 2015-12-30
灌阳县鸿运矿山设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a mine bolt, which solves the problems of low prestress of the traditional bolt, easy rotation or displacement of the arched backing plate, and poor tensile and pull-out resistance.

Method used

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  • Mining anchor rod

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Embodiment Construction

[0016] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0017] Such as figure 1 In the illustrated embodiment, a mine bolt includes a screw rod body 1, the front and rear ends of the screw rod body 1 are respectively provided with an anchor head 2 and a bolt 3, and the screw rod body 1 is provided with a position close to the bolt 3 An arched backing plate 4, the spiral rod body 1 on the upper and lower sides of the arched backing plate 4 is provided with a fixing nut 5 and a grouting plug 6 respectively, and a plurality of tooth heads 7 are provided on one side of the arched backing plate 4 The anchor head includes an expansion shell 8, the expansion shell 8 is provided with a through hole 9 in the axial direction, and the lower end of the through hole 9 is in the shape of a con...

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Abstract

The invention discloses a mining anchor rod. The mining anchor rod comprises a screw rod body. An anchor head and a bolt are arranged at the front end and the rear end of the screw rod body respectively. An arched base plate is arranged at the position, close to the bolt, of the screw rod body. A hold-down nut and a stop-grouting plug are arranged on the screw rod body and located on the upper side and the lower side of the arched base plate respectively. A plurality of tooth heads are arranged on one side of the arched base plate. The anchor head comprises an expansion shell, and a through hole is formed in the axial direction of the expansion shell. Moreover, the lower end of the through hole is in a big-end-down cone shape, and a cone core is arranged in the through hole. A plurality of spring clamping sheets are arranged on the portion, located between the anchor head and the stop-grouting plug, of the screw rod body. Besides, the lower ends of the spring clamping sheets are fixed to the screw rod body, and the upper ends of the spring clamping sheets are free ends capable of being dispersed.

Description

Technical field [0001] The invention relates to an anchor rod, in particular to a mine anchor rod. Background technique [0002] Anchor rod support is a common method of surrounding rock reinforcement and support in the construction of side slopes, deep foundation pits and other ground projects, as well as in the construction of underground chambers such as tunnels and stopes. By applying active prestress, the prestressed anchor rod can timely control the separation, sliding, and crack opening of the surrounding rock in the anchoring area, so that the surrounding rock is in a compressed state, and the deformation and damage of the surrounding rock are restrained. At present, my country’s resource development is gradually developing towards deep rock masses. Deep rock masses have the characteristics of large buried depth and high in-situ stress. After the excavation and unloading of the rock masses, the surrounding rock fragmentation and slab cracking are prone to serious damage, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
Inventor 熊宗泽
Owner 灌阳县鸿运矿山设备有限公司
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