Tensioning device for rock-soil pre-stressed anchor cable or anchor rod

A prestressed anchor cable and tensioning device technology, applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve the problem of uneven stranding force, etc., to simplify the mechanism and reduce the tension back The effect of reducing damage and saving steel strand materials

Active Publication Date: 2021-11-12
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a geotechnical prestressed anchor cable or bolt optimized tensioning device to solve the technical problem of inhomogeneity in the force of different wire harnesses

Method used

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  • Tensioning device for rock-soil pre-stressed anchor cable or anchor rod
  • Tensioning device for rock-soil pre-stressed anchor cable or anchor rod
  • Tensioning device for rock-soil pre-stressed anchor cable or anchor rod

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Embodiment Construction

[0034] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the scope of protection of this application. The detailed description of the embodiments is not intended to limit the scope of the invention as claimed, but to represent only selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the p...

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Abstract

The invention relates to a tunnel or footrill technology, and provides a tensioning device for a rock-soil pre-stressed anchor cable or anchor rod. Thetensioning devicesequentially comprises a plurality of mutually independent jacking limiting assemblies, a plurality of mutually independent single wire harness tensioning assemblies and a plurality of independent piston assemblies from front to back. Each jacking limitingassembly comprises a clamping piece limiting jacking head, a jacking limiting assembly inner component and a jacking device springback spring, wherein the jacking limiting assembly inner component is used for allowing anchor cable wire harnesses or anchor rods to pass through, the clamping piece limiting jacking head can movably abut against clamping pieces of anchorage devices of the anchor cable wire harnesses or the anchor rods, the jacking device springback spring tightly jacks the clamping piece limiting jacking head on the rear side, so that the anchor cable harness or the anchor rod is prevented from returning after being pulled; the multiple independent piston assemblies comprise tensioning component pistons connected to the rear ends of the tensioning clamps respectively, the tensioning component pistons are contained in the piston cavities of the cylinder body in a sliding mode, series oil way assemblies are connected between the piston cavities, and the series oil way assemblies are connected into rod cavities of the piston cavities.

Description

technical field [0001] The application relates to the technical field of equipment for excavating or lining tunnels, adit or large underground chambers, and in particular to a geotechnical prestressed anchor cable or anchor rod tensioning device. Background technique [0002] The lengths of steel strands in different harnesses of the anchor cable are often not uniform. Using the current tensioning equipment based on equal elongation tension can easily cause uneven force of different harness strands, and the uneven force will lead to anchorage. The anchoring quality and prestress of the cable are affected. [0003] The current commonly used anchor cable tensioning equipment has a structure that has been used for nearly half a century. The structure of the tensioning equipment remains unchanged, but the usage scenarios and pretension requirements of the anchor cables have changed greatly. The current tensioning equipment can no longer meet the current anchor cable constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/10G01N3/02E02D5/74E02D33/00
CPCG01N3/10G01N3/02E02D5/74E02D33/00E02D2250/0046E02D2600/30
Inventor 杨军边文辉詹家旺
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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