Bolt and cable pull-out strength tester

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...

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

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