Large-displacement drawing machine for constant-resistance anchor tie and usage method thereof

A technology of drawing machine and large displacement, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc. It can solve the problems that cannot meet the needs of constant resistance and large deformation bolt detection, small displacement range, and low drawing load. Achieve the effect of simple structure, high bearing capacity and convenient movement
CN102944477AActive Publication Date: 2013-02-27CHINA UNIV OF MINING & TECH (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH (BEIJING)
Publication Date
2013-02-27

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Abstract

The invention provides a large-displacement drawing machine for a constant-resistance anchor tie and a usage method thereof. The large-displacement drawing machine comprises a supporting column, a hoop, a rotating seat, a hollow hydraulic cylinder and a hydraulic pump, wherein the supporting column can be supported in a tunnel; the hoop is sleeved on the supporting column; the rotating seat is assembled on the hoop; the hollow hydraulic cylinder can draw the anchor tie; the hydraulic pump drives the hollow hydraulic cylinder; the length of the supporting column can be adjusted; two ends of the supporting column can be leaned against on the bottom surface and the top surface of the tunnel, which are opposite; the hoop can be detachably mounted at different positions on the supporting column; the rotating seat can be fixedly arranged on the hoop at different rotation angles; the hollow hydraulic cylinder is connected with the hydraulic pump; and the hollow hydraulic cylinder is assembled on the rotating seat. The large-displacement drawing machine for the constant-resistance anchor tie has the advantages of large displacement range, high bearing capacity, simple structure, convenience in movement, flexibility in operation, and safety and reliability in transportation.
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Description

technical field

[0001] The invention relates to mine support engineering equipment, in particular to a constant-resistance bolt large-displacement drawing machine for roadway support bolt detection and a use method thereof. Background technique

[0002] In coal mine roadway support, bolt is the most widely used and most used support material. With the continuous increase of coal mine mining depth, the roadway surrounding rock often exhibits the characteristics of nonlinear large deformation, which is specifically manifested as large deformation of soft rock, large deformation of impact, large deformation of rockburst, large deformation of gas outburst, etc. However, the existing support materials generally have the problem of low elongation, and cannot adapt to the characteristics of large deformation of surrounding rock in deep roadways. When the surrounding rock undergoes large deformation, due to the large energy in the initial stage of deformation, the deformation energ...

Claims

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