Bottom reaming device for roadway anchor hole

An anchoring hole and hole bottom technology, which is used in the installation of anchor rods, drilling equipment and methods, drilling equipment, etc., can solve problems such as bond surface damage and anchoring system failure, so as to reduce support costs and reduce the cost of anchor rods. The effect of row spacing and improving construction speed

Inactive Publication Date: 2018-06-15
XINJIANG INST OF ENG
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the existing anchoring technology that the bonding surface between the anchoring agent and the hole wall is damaged due to insufficient strength of the anchoring hole wall, which eventually leads to the failure of the anchoring system, the invention provides a roadway anchoring hole bottom reaming device

Method used

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  • Bottom reaming device for roadway anchor hole
  • Bottom reaming device for roadway anchor hole
  • Bottom reaming device for roadway anchor hole

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Embodiment Construction

[0022] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

[0023] Such as Figure 1-7 As shown, it is a structural schematic diagram of an embodiment of the present invention. The bottom reaming device of the anchor hole of the present invention includes: a drilling tool top cap 1, a cylindrical pin 2, a support connecting rod 3, a connecting rod spring pin 4, and a rotary blade 5 , blade connection spring pin 6, push rod 7, blade support sleeve 8, spring 9, drill handle 10 and bayonet pin 11, the first end of described push rod 7 is provided with a plurality of rotating blades 5, and described rotating blade 5 One end of one end is connected with the push rod 7 through the support connecting rod 3, and the d...

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Abstract

The invention belongs to the field of supports in coal mines, and discloses a roadway anchor hole hole-bottom reaming device, comprising a support connecting rod (3), rotating cutters (5), a cutter connecting spring pin (6), a push rod (7), a cutter support sleeve (8), and a drilling tool handle (10). The first end of the push rod (7) is provided with a plurality of rotating cutters (5). One end (5) of the rotating cutter (5) is connected with the push rod (7) through the support connecting rod (3), and the other end is connected with the drilling tool handle (10) which is on the second end of the support connecting rod (3) through the cutter support sleeve (8). The drilling tool handle (10) pushes the push rod (7) to move under the action of external forces, so as to apply external forces on the rotating cutters (5), so the rotating cutters (5) expand rotating radius outward. The device improves binding power of a roadway anchoring agent and drill hole surrounding rocks, improves anchoring system stability, and has significance on controlling occurrence of wall caving and roof collapse accidents in an anchor bolt support roadway.

Description

technical field [0001] The invention belongs to the field of coal mine support and relates to a hole bottom reaming device for roadway anchor holes. Background technique [0002] In recent years, bolt support technology has become one of the main support forms of coal mine roadway support due to its low cost, simple construction process, and fast construction speed. of a revolution. Bolt support is to anchor the front end (anchor head) of the bolt to the stable rock mass. On the one hand, at the end of the rod body (anchor tail), the axial preload is applied to the rod body through the joint action of the bolt tray and the pre-tightening nut. , so as to inhibit the axial deformation of the surrounding rock of the roadway along the rod body, and prevent the surrounding rock from separating layers; [0003] In the construction of the existing bolt support technology, the installation and anchoring process of the bolt is generally as follows: first, use the "drill bit-drill p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/28E21D20/00
CPCE21B7/28E21D20/003
Inventor 张伟光王鹏张俊敏蔡昌宣王传美李春阁杨长德
Owner XINJIANG INST OF ENG
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