Spiral sharp-rib anchor rod and spiral rib drilling rod for drilling hole of spiral sharp-rib anchor rod

A technology of spiral and sharp ribs, which is applied in the field of mine support equipment, can solve the problems of increasing the consumption of anchoring agent materials and construction costs, the inability to realize the slag discharge of multi-head spiral ribs of drill pipes, and the cumbersome means of installing anchor rods, etc., to achieve rigidity improvement, The effect of increasing the strength and accuracy of the bolt

Inactive Publication Date: 2006-08-09
孔祥清
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When in use, first drill a round hole with a nominal diameter of 28 mm and a depth of more than 1.8 mm with an ordinary drill pipe, and then insert an anchor rod with a nominal diameter of 18-22 mm into it. Since the anchor rod is thin and the hole is large, it is necessary to add The anchoring agent fixes the anchor rod, and the installation method of the anchor rod is cumbersome, which increases the consumption of expensive anchoring agent materials and construction costs
If you drill an ordinary drill pipe that matches the existing anchor rod with a hole smaller than 18-22 mm: first, the rigidity is not enough to work; second, it is difficult to discharge slag during drilling;

Method used

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  • Spiral sharp-rib anchor rod and spiral rib drilling rod for drilling hole of spiral sharp-rib anchor rod
  • Spiral sharp-rib anchor rod and spiral rib drilling rod for drilling hole of spiral sharp-rib anchor rod
  • Spiral sharp-rib anchor rod and spiral rib drilling rod for drilling hole of spiral sharp-rib anchor rod

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Embodiment Construction

[0008] Spiral ribbed anchor rod, which has a polished rod 1, the polished rod 1 is integrated with the rod body 2, the surface of the rod body 2 is rolled with a spiral sharp rib 3, the bottom (root) of the spiral sharp rib 3 is 1.5-3.5 mm thick, and the upper part is 0.5-2.5 mm thick , spiral sharp ribs 3 1.5-4 mm high. Spiral sharp rib 3-pitch lead is 6-12 mm. The thickness of the section shape of the spiral sharp rib 3 is less than a quarter of the lead of the pitch. Said a kind of spiral rib drilling rod for drilling spiral pointed rib bolt holes, it has a rod body 2, a drill bit 4 is arranged at one end of the rod body 2, and a rolling car on the surface of the rod body 2 has a spiral rib 5, so that the rod body 2 and the spiral rib 5 form a One piece, the drill pipe adopts multi-head spiral rib 5 structure, the pitch lead is greater than 30 mm, the rod diameter is 20-21 mm, and the drilling diameter is 20-22 mm.

[0009] The spiral sharp-rib bolt of the present inventi...

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Abstract

The spiral sharp-rib anchor rod has one straight rod section and one rod section with rolled spiral sharp-rib on the surface. The spiral rib drilling rod for drilling the spiral sharp rib hole has one rod body with rolled spiral rib and one bit on one end of the rod body. The present invention makes it possible to fix the bolt support inserted into the hole without using bolt support fixing agent and this makes the operation simple and the bolt support reusable.

Description

technical field [0001] The invention relates to a support tool for mines, which is a spiral sharp-rib bolt and a spiral-rib drill pipe for drilling the hole of the spiral sharp-rib bolt. Background technique [0002] At present, most of the drill pipes and anchor products used for support in mines are single hexagonal steel, twisted steel, spiral ribs and round steel welded on the round steel, and the anchor rods are mostly rebar. When in use, first drill a round hole with a nominal diameter of 28 mm and a depth of more than 1.8 mm with an ordinary drill pipe, and then insert an anchor rod with a nominal diameter of 18-22 mm into it. Since the anchor rod is thin and the hole is large, it is necessary to add The anchoring agent fixes the anchor rod, and there are objectively cumbersome means of installing the anchor rod, which increases the consumption of expensive anchoring agent materials and construction costs. If drilling is matched with an ordinary drill pipe with a hol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00E21D20/00
Inventor 孔祥清
Owner 孔祥清
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