Self-drilling anchor rod

A self-drilling and bolting technology, which is applied in the installation of bolts, earth square drilling, mining equipment, etc., can solve the problems of complex processing and low production efficiency

Active Publication Date: 2021-07-30
CCTEG COAL MINING RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the related art, the self-drilling anchor can be used to drill a hole and fasten the anchor in the drilled hole for support in a single operation, but the processing is complicated and the production efficiency is low

Method used

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  • Self-drilling anchor rod
  • Self-drilling anchor rod

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Embodiment Construction

[0021] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0022] Refer to the attached Figure 1-2 A self-drilling bolt according to an embodiment of the present invention is described.

[0023] The self-drilling bolt according to the embodiment of the present invention includes a rod body 1 , a stop nut 2 and a drive nut 3 .

[0024] The rod body 1 has a first end 11 and a second end 12 , external threads are provided on the outer peripheral surface of the rod body 1 , and the external threads extend a predetermined length from the first end 11 to the second end 12 along the length direction of the rod body 1 .

[0025] Such as figure 1 As shown, the first end 11 of the rod body 1 is the right end, and the second en...

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PUM

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Abstract

The invention discloses a self-drilling anchor rod. The self-drilling anchor rod comprises a rod body, a limiting nut and a driving nut, the rod body is provided with a first end and a second end, external threads are arranged on the peripheral face of the rod body, the limiting nut is in threaded fit with the rod body, the driving nut is in threaded fit with the rod body, when the driving nut rotates in the first direction, the first face of the driving nut abuts against the second face of the limiting nut, and the rotating torque applied to the limiting nut by the driving nut is smaller than the rotating torque needed by the limiting nut rotating relative to the rod body, therefore, the limiting nut limits the driving nut to move towards the first end of the rod body, and the driving nut drives the rod body to rotate in the first direction. The self-drilling type anchor rod has the advantages of being easy to operate, easy to machine and popularize, high in reliability and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of coal mining equipment, in particular to a self-drilling bolt. Background technique [0002] Top and side supports are critical in mining and tunneling operations. The sides and roofs of mines and tunnels are made of rock formations, which must be reinforced to prevent the possibility of landslides. Bolts are widely used to strengthen rock formations. In the related art, a self-drilling bolt can be used to drill a hole and fasten the bolt in the drilled hole for support in a single operation, but the processing is complicated and the production efficiency is low. Contents of the invention [0003] The present invention is based on the inventor's discovery and recognition of the following facts and problems: [0004] In order to realize the functions of forward drilling and reverse preloading during the use of self-drilling bolts, pin holes are usually set at the tail of the bolt, and pins are placed i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/00
CPCE21D21/0026E21D20/003
Inventor 王子越康红普姜鹏飞罗超刘畅郭吉昌韦尧中陈志良曹晓明杨建威
Owner CCTEG COAL MINING RES INST
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