Novel expansion shell inverted wedge type grouting anchor rod

A technology of grouting bolts and inverted wedges, which is used in the installation of bolts, mining equipment, earth-moving drilling, etc.

Inactive Publication Date: 2013-06-05
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not possible to make the anchor rod bonded and anchored by g...

Method used

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  • Novel expansion shell inverted wedge type grouting anchor rod
  • Novel expansion shell inverted wedge type grouting anchor rod
  • Novel expansion shell inverted wedge type grouting anchor rod

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[0027] like figure 1 , a new type of expanded shell inverted wedge groutable anchor rod consists of an anchor rod body 1, an expanded shell anchor head 2, an inverted wedge jacket 3, a transmission ring 4, a grout stopper 5, an anchor backing plate 6, a nut 7, Several parts such as nut washer 8 are formed. The structure of a new type of expanded shell inverted wedge groutable anchor rod is as follows: the expanded shell anchor head 2 and the anchor backing plate 6 are respectively located at both ends of the anchor rod body 1, and are fixed by nuts 7 and nut washers 8; The wedge-type jacket 3 is set on the outside of the anchor rod body 1, the hollow disc 24 at the bottom of the transmission ring 4 is placed in the inverted wedge-type jacket 3, and the top metal ring 25 is in contact with the expansion shell anchor head 2; the grout stopper 5 is set on the The lower part of the anchor rod body 1.

[0028] The anchor rod body 1 is as figure 2It is a hollow rod body structur...

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Abstract

The invention provides a novel expansion shell inverted wedge type grouting anchor rod comprising an anchor rod body, an expansion shell type anchoring head, an inverted wedge type outer sleeve, a transmission ring, a grouting blocking plug, an anchoring base plate and nuts. The anchor rod is characterized in that the expansion shell type anchoring head and the anchoring base plate are located at two ends of the anchor rod body and are fixed through the nuts, the inverted wedge type outer sleeve is sleeved outside of the anchor rod body, the bottom of the transmission ring is arranged in the inverted wedge type outer sleeve, and the top end of the transmission ring contacts the expansion shell type anchoring head. The anchor rod body is a hollow metal rod element provided with left-hand threads. The expansion shell type anchoring head is small-end-up and provided with a flap-shaped structure which can open at a certain angle in an expansion mode, and can form barbs invertedly piercing in a rock body when stressed and expanded. The surface of the inverted wedge type outer sleeve is provided with inverted wedge type grooves in the annular direction. The novel expansion shell inverted wedge type grouting anchor rod has the advantages of being fast in anchoring, easy to install, capable of grouting and the like, facilitates mechanical construction, and has good anchoring effects on soft, expanded and cracked surrounding rock.

Description

technical field [0001] The invention belongs to the technical field of bolt shotcrete support and precision machinery, and relates to a novel shell-expanding inverted wedge-type groutable anchor, which is suitable for underground geotechnical engineering such as mine shafts, traffic tunnels, and various chambers. Bolt spray support is also suitable for bolt spray support of various rock and soil slopes. Background technique [0002] During the excavation process of roadway engineering, traffic tunnels, and rock and soil slopes involved in geotechnical engineering, the deformation of the surrounding rock increases significantly due to the influence of self-excavation, adjacent roadway excavation, and working face advancement. In order to prevent the deformation of the surrounding rock from threatening the safety of workers and affecting the normal production of the working face, it is essential to reinforce the surrounding rock of the working face. In the current method of s...

Claims

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Application Information

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IPC IPC(8): E21D21/00E21D20/02
Inventor 徐雪战刘万荣孟祥瑞赵光明徐卫责王向前高召宁彭超王应帅董永叶春良
Owner ANHUI UNIV OF SCI & TECH
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