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
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] Such as figure 1 As shown, the large-displacement drawing machine for constant-resistance bolts provided by the present invention includes: a double-column support 3 , a swivel seat 2 and a hollow hydraulic cylinder 1 . The double-column support 3 can be vertically supported in the roadway to serve as the structural main body of the drawing machine. The hollow hydraulic cylinder 1 is detachably assembled on the double-column support 3 through the swivel seat 2 .
[0030] Such as figure 1 As shown, the main body of the double-column bracket 3 includes a supporting column 31, a positioning column 32 and a connecting frame 33; the supporting column 31 and the positioning column 32 are preferably hollow metal pipe fittings, preferably a metal material with good structural strength and light weight , such as: aluminum, aluminum a...
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