An anchor rod and anchor cable shear performance testing device and testing method

A testing device and anti-shearing technology, which is applied in the measuring device, uses a stable shear force to test the strength and strength characteristics of materials, etc. Simple, reasonable size design, easy disassembly effect

Active Publication Date: 2020-03-27
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the shear performance test of anchor bolts and cables is far more complicated than the tensile performance test, especially it is difficult to conduct shear tests at the engineering site, the current tests are basically laboratory tests, and the current test research is still very unsystematic

Method used

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  • An anchor rod and anchor cable shear performance testing device and testing method
  • An anchor rod and anchor cable shear performance testing device and testing method
  • An anchor rod and anchor cable shear performance testing device and testing method

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Embodiment Construction

[0053] Below in conjunction with accompanying drawing, the application is further described:

[0054] like Figure 7 As shown, the anchor rod and anchor cable shear performance testing device is characterized in that: it includes a shear unit, a friction-eliminating outer frame, a base and an auxiliary unit, wherein the friction-eliminating outer frame is arranged outside the shear unit;

[0055] As shown in Fig. 1(a), Fig. 1(b), Fig. 2(a) and Fig. 2(b), the shearing unit includes two left and right ends shearing steel sleeves 1, two ends shearing An intermediate shearing steel sleeve 2 is provided between the steel sleeves 1, and the upper and lower parts of the two-end shearing steel sleeve 1 and the intermediate shearing steel sleeve 2 can be disassembled in half. There are steel sleeves on both sides of the cylindrical steel sleeve. The connection part 4, the inner diameter of the cylindrical steel sleeves of the shearing steel sleeve 1 at both ends and the middle shearing...

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Abstract

The invention discloses a device for testing the shear resistance of a bolt and a cable, and a test method thereof. The device and the method are suitable for being used to test the support safety ofa coal mine. The device comprises a shearing unit, a friction-removing outer frame, a pedestal and an affiliated unit; the shearing unit comprises three semi-detachable cylindrical steel sleeves; thefriction-removing outer frame comprises four channel steels, four steel plates and bolts; the pedestal comprises two I-beams, two steel plates and four position-adjusting steel blocks; and the affiliated unit comprises two pressure pillow units, two pressure pillow unit steel plates and four load-transfer steel plates. The device has the advantages of simple structure, easiness in operation, and realization of the detection of the shear resistance of all common bolt and cable products.

Description

technical field [0001] The invention relates to a testing device and a testing method for the anti-shear performance of anchor rods and cables, and is especially suitable for the testing device and the testing method for the anti-shear performance of bolts and cables used in coal mine support. Background technique [0002] Bolt and cable support is the main surrounding rock reinforcement technology used in geotechnical and mining engineering. The mechanical properties of anchor rods and cables are the basic parameters for the design of reinforcement schemes. The mechanical properties of anchor rods and cables can be generally divided into axial tensile properties and transverse shear properties. For the axial tensile properties of anchor rods and cables, a large number of studies have been carried out in the past, and people's understanding of it is relatively deep and comprehensive. Existing support theories, such as suspension theory, composite beam theory, composite arc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025
Inventor 李许伟
Owner CHINA UNIV OF MINING & TECH
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