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Bolt and cable pull-out strength tester

An anchor cable puller and bolt technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of short reserve, lack of test conditions, and inability to perform bolt and anchor cable test detection. , to ensure the quality of the project and prevent cutting corners

Inactive Publication Date: 2015-07-22
郑卫华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reserved amount is too short, the test conditions are not available, and the test detection of the anchor rod and anchor cable pullout cannot be carried out.
In order to achieve random spot checks on the construction quality of anchor bolts and cables, many construction units take advantage of the disadvantages of the reserved length to construct the bolts and cables of the reserved length to be inspected strictly according to the requirements, and the test results are completely qualified; Anchor cables with no reserved length will cut corners and materials, and the construction quality of anchor cables is extremely poor, which makes it impossible to carry out the pull-out test and seriously affects the quality of the tunnel surrounding rock and slope

Method used

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  • Bolt and cable pull-out strength tester

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] An anchor rod and anchor cable pulling instrument, including a conical anchor 1, a clip 9, a jack, an oil delivery pipe 3, a hydraulic distribution valve 4, an oil pressure pump 5, a horizontal support 13, a positioning frame 15, and a displacement meter 14. That is, the jacks with screw-type adjusting top plates are evenly arranged, and are connected into one body with the connecting plate 6 to form the synchronous jack 2. The conical anchor 1 is fixed on the front end of the synchronous jack 2 through the anchor connecting plate 8, and protrudes beyond the The adjustment top plate and the jack are all connected to the hydraulic pump 5 through the oil delivery pipe 3 and the hydraulic distribution valve 4; the horizontal brackets 13 are connected by a positioning frame 15, the displacement meter 14 is installed in the middle of the positioning frame 15, and the horizontal bracket 13 is connected by a fixing screw 12 It is connected with the expansion screw 11 installed ...

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PUM

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Abstract

The invention relates to a bolt and cable pull-out strength tester. The bolt and cable pull-out strength tester comprises a conical anchor, a clamping piece, jacks, an oil pressure pump, horizontal supports, a positioning frame and a displacement meter, wherein the jacks respectively with a screw-type adjusting top tray are uniformly distributed and connected into a whole body by virtue of a connecting plate to form a synchronous jack, the conical anchor is fixed on the front end of the synchronous jack by virtue of an anchor connecting plate, and each jack is connected with the oil pressure pump by virtue of an oil conveying pipe and a hydraulic distribution valve; the positioning supports are connected with each other by virtue of the horizontal supports, the displacement meter is installed in the middle part of the positioning support, each horizontal support is connected with an expansion screw which is installed by the side of a to-be-measured bolt and cable by virtue of a fixed screw, the expansion screw and the to-be-measured bolt and rope are arranged on a same straight line, and a positioning meter is coaxial with the to-be-measured bolt and cable. By adopting the bolt and cable pull-out strength tester, the pull-out test on the to-be-measured bolt and cable with insufficient reserved length can be effectively carried out, the engineering quality can be guaranteed, and the jerry-built phenomenon of the bolt and cable in the reinforcement of tunnel surrounding rock or side slope engineering can be maximally prevented.

Description

technical field [0001] The invention relates to an anchoring quality detection device for anchor rods and cables in tunnel surrounding rock or side slope engineering reinforcement, in particular to an anchor rod and anchor cable puller for pulling out tests. Background technique [0002] In the existing bolt and cable pull-out tests, it is generally required to reserve a certain length (about 30 cm) for the test bolt and cable to ensure the implementation of the pull-out test. If the reserved amount is too short, the test conditions are not available, and the test detection of the anchor bolt and cable pullout cannot be carried out. In order to achieve random spot checks on the construction quality of anchor bolts and cables, many construction units take advantage of the disadvantages of the reserved length to construct the bolts and cables of the reserved length to be inspected strictly according to the requirements, and the test results are completely qualified; The ancho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/10
Inventor 郑卫华张春晓邓超吴琼
Owner 郑卫华
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