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Anchor rod with external expanding devices

An expansion device and bolt technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of inability to form multi-point support and poor bolt support effect, and achieve anchoring force and tensile strength Effect boosting, enhanced effects, wide-ranging effects

Active Publication Date: 2013-09-11
CHENGDU MODERN WANTONG ANCHOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the objectives of the present invention is to address the above-mentioned deficiencies and provide a bolt with an external expansion device, in order to solve the problem of poor bolt support in the prior art and the inability to form multi-point support on the same rod body. question

Method used

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  • Anchor rod with external expanding devices

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Embodiment Construction

[0020] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0021] refer to figure 1 As shown, one embodiment of the present invention is an anchor rod with an external expansion device, which includes an elongated anchor rod body 1, and at least one expansion device 2 is installed on the outside of the anchor rod body 1, so The expansion device 2 includes at least an extrusion structure 21 and an expansion structure 22, which are used to move the extrusion structure 21 along the axial direction of the anchor body when the anchor body 1 rotates, and then squeeze each other with the expansion structure 22, and finally make the extrusion Any one or both of the compression structure 21 and the expansion structure 22 expand radially at the same time.

[0022] In this embodiment, the purpose is to provide a way of setting and forming an expansion structure at any part of the elongated anchor body 1, so that many places in the midd...

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Abstract

The invention discloses an anchor rod with external expansion devices and belongs to an expansion anchor rod. The anchor rod comprises an elongated anchor rod body, at least one expansion devices are mounted outside the anchor rod body, each expansion device at least comprises an extrusion structure and an expansion structure and is used for the circumstance that when the anchor rod body rotates, the extrusion structure moves along the axial direction of the anchor rod body to realize mutual extrusion with the expansion structure so as to finally enable any or two of the extrusion structure and the expansion structure to simultaneously form radial expansion. By arranging one or multiple expansion devices outside the anchor body, multiple supporting points can be formed on the anchor rod body; when the anchor rod body rotates, the expansion devices are under the action of threads to be extruded to expand, and expanded structures can form mechanical supporting on the hole wall of a rock stratum anchor hole, so that anchoring force and tensile effect of the anchor rod are substantially increased; anchoring strength and permanent supporting effect of the anchor rod can be further improved by means of hollow anchor rod grouting.

Description

technical field [0001] The invention relates to an expansion anchor rod, and more specifically, the invention mainly relates to an anchor rod with an external expansion device. Background technique [0002] As an important part of the new Austrian method construction, the bolt is a tension member that penetrates into the ground. One end of it is connected with the engineering component, and the other end goes deep into the ground. It reinforces the surrounding rock, disperses and transmits high stress, and limits the displacement of the surrounding rock. It has been affirmed in a large number of engineering practices. The current anchors are mainly full-length bonded anchors and end-anchor anchors, but these two types of anchors have shortcomings. The full-length bonded anchors only have the gasket at the anchor hole as their The fulcrum, and immediate support cannot be achieved, and it takes a period of time for the anchoring material (cement mortar, etc.) to set before it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
Inventor 吴航牛建文
Owner CHENGDU MODERN WANTONG ANCHOR TECH
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