Expanding-type large head anchor rod

A head-expanding and expansion-type technology, applied in construction, sheet pile wall, infrastructure engineering, etc., can solve the problems of difficulty in opening, inconvenient operation, complex structure, etc., and achieve easy failure, simple structure and high energy conversion rate. Effect

Inactive Publication Date: 2018-07-31
郑敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although this solution can improve the pullout resistance of the bolt, the structure is complicated, the operation is inconvenient, and it is easy to fail, and it is difficult to achieve the effect of opening in hard soil

Method used

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  • Expanding-type large head anchor rod
  • Expanding-type large head anchor rod
  • Expanding-type large head anchor rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] see Figures 1 to 3 , an expansion-type enlarged head anchor rod, including a rod body 1 and a bullet-shaped hollow enlarged part 2 arranged at the front end of the rod body 1; the enlarged part 2 is composed of a cylindrical part 21 and a tapered part 22; the cylindrical part 21 One end is fixedly connected to the front end of the rod body 1; the tapered part 22 is surrounded by a plurality of fan-shaped single pieces 221; the fan-shaped single piece 221 is rotatably connected to the other end of the cylindrical part 21; the inner seal of the cylindrical part 21 The sliding sleeve is provided with a bullet-shaped push block 23; the push block 23 and the cylindrical part 21 surround an explosion chamber 24; the explosion chamber 24 is filled with gunpowder; The inner side of the fan-shaped single piece 221 is provided with a protrusio...

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PUM

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Abstract

The invention relates to an expanding-type large head anchor rod. The expanding-type large head anchor rod comprises a rod body and a bullet-shaped hollow expanding portion arranged at the front end of the rod body; the expanding portion is composed of a cylindrical portion and a cone portion; one end of the cylindrical portion is fixedly connected with the front end of the rod body; and the coneportion is formed by enclosing a plurality of fan-shaped single pieces. The fan-shaped single pieces are rotatably connected with the other end of the cylindrical portion; a bullet-shaped pushing block is arranged in the cylindrical portion in a sealing and sliding sleeved model and an explosive cavity is formed by enclosing the pushing block and the cylindrical portion; and the explosive cavity is filled with gunpowder. The gunpowder is detonated by a lead which extends out of the rear end of the rod body; protrusions are arranged on the inner side faces of the fan-shaped single pieces; the cone portion is formed into a claw-like shape by external supporting and extruding of the protrusions by the pushing block after the gunpowder is detonated; and the cylindrical portion is progressivelyreduced in diameter from one end to the other end connected with the rod body.

Description

technical field [0001] The invention relates to an expansion-type expanding head bolt, which belongs to rock and soil construction equipment in the field of building construction. Background technique [0002] Bolt support is a reinforcement and support method used in surface engineering such as slopes and deep foundation pits, as well as underground chambers such as tunnels and stopes. Use metal parts, wood parts, polymer parts or other materials to make pole columns, drive them into pre-drilled holes in the surface rock mass or the rock mass around the chamber, and use the special structure of the head, pole body and tail supporting plate, or Depending on the bonding effect, the surrounding rock and the stable rock mass are combined to produce suspension effects, composite beam effects, and reinforcement effects to achieve the purpose of support. The degree of combination between the bolt bearing body and the rock mass has a direct impact on the support effect. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74
CPCE02D5/74
Inventor 郑敏
Owner 郑敏
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