Miniature single-shaft rock test machine

A technology of rock testing machine and testing machine, which is applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problems such as failure to reflect the continuous loading and deformation process of rocks, small amplification factor, and damage to specimens. , achieve the effect of avoiding repeated loading process and small volume

Inactive Publication Date: 2012-05-02
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only can it not reflect the continuous loading deformation process of rock, but also it is troublesome to operate
In addition, in the process of repeated loading, unloading, and moving, it is easy to cause unnecessary damage to the specimen
Secondly, the size of the standard specimen used in the existing testing machine is large, and the magnification factor of the CT scan is small, and micro-cracks cannot be seen.
There is no rock testing machine capable of loading tiny specimens in the prior art

Method used

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  • Miniature single-shaft rock test machine
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  • Miniature single-shaft rock test machine

Examples

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Embodiment Construction

[0012] Such as figure 1 As shown, a miniature uniaxial rock testing machine includes: a body 12, a pressure display instrument 14, and a push screw 11, a displacement dial 10, a lower wedge 9, an upper wedge 8, a force sensor 7, and a return spring 6 A manual loading device composed of a sample placement device composed of a test piece cylinder 4, a pressure steel column 5, a spherical pad 2, and a top preload screw 1; the test piece cylinder 4 is threadedly connected with the upper part of the body 12, and the The propulsion screw 11 penetrates the lower inner chamber 12-2 of the body from one side of the lower part of the body 12, and the propulsion screw 11 is threadedly connected with the body 12. 11 One end is installed with the lower wedge body 9, the upper wedge body 8 is in contact with the wedge surface of the lower wedge body 9, the upper plane of the upper wedge body 8 is in contact with the force sensor 7, and is located in the inner cavity of the body In 12-1, a ...

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Abstract

The invention discloses a miniature single-shaft rock test machine belonging to the field of rock mechanics. The miniature single-shaft rock test machine solves the problem that the rock damage process cannot be observed in real time by combining micro CT (Computed Tomography) due to no existence of a rock test machine for loading a miniature specimen at present. The miniature single-shaft rock test machine comprises a machine body, a pressure display instrument, a manual loading device and a specimen placing device, wherein the manual loading device comprises a propelling screw rod, a displacement dial, a lower wedge body, an upper wedge body, a force sensor and an offsetting spring, and the specimen placing device comprises a specimen cylinder, a pressure steel column, a spherical washer and a top pre-tightening screw rod. The miniature single-shaft rock test machine is used for rock single-shaft compression test and can realize CT scanning while rock loading and observe the process of crack derivatization-expansion inside a rock.

Description

technical field [0001] The invention belongs to the field of rock mechanics and rock experiments, and relates to a miniature uniaxial rock testing machine for micro-CT real-time observation. Background technique [0002] Most of the current rock material testing machines are large-scale uniaxial or triaxial testing machines, and the size of the standard specimen used in the test is φ50mm×100mm. These testing machines are driven by a motor to drive a worm gear reducer, and then drive two lead screws through a synchronous toothed belt to drive the moving beam up and down. This type of testing machine can complete the conventional uniaxial compression test or triaxial compression test of rock, and then measure the mechanical parameters such as uniaxial compressive strength or triaxial compressive strength of rock. [0003] During the pressurization process of the rock, with the gradual increase of vertical pressure or horizontal pressure, the interior of the rock will graduall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/16G01N3/06
Inventor 冯增朝赵东马玉林王彦琪郭红强
Owner TAIYUAN UNIV OF TECH
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