A pull-and-press device for corrosion resistance and shear resistance testing of anchor rods

Abstract

A pull-and-pressing device used for the anti-corrosion and shear-resistance testing of anchor rods. Through the shear force direction changing device, the gear motor controls the axial rotation of the flap member, adjusts the shear force direction, and controls the lifting of the top shaft through the hydraulic cylinder to drive the flip. The plate forms an angle of shearing force, and the upper pressure cylinder is driven to sink by the hydraulic press, and the lower end cone of the upper pressure cylinder collides with the turning plate, and is restricted by the turning plate, resulting in a sliding fit and forming a shear force. Through the alternating operation of the hydraulic press and the shear force changing device, the shear force test in different directions and angles can be simulated. Through the construction site soil set in the environmental cylinder, the corrosive environment after the construction of the anchoring specimen is simulated. In the real environment, with the weather changes, the corrosive liquid in the soil will also have dry and wet changes. Therefore, a negative pressure suction device and a suction pump are set up to simulate the dry and wet cycle of the soil according to the historical weather cycle changes of the construction site. At the same time, in the liquid reservoir, the corrosive liquid can also be extracted for testing, or various reagents can be added to test the anchoring specimen.

Description

technical field [0001] The invention relates to the technical field of engineering detection, in particular to a pulling and pressing device and a seasoning packaging structure used for the anti-corrosion and anti-shear testing of anchor rods. Background technique [0002] At present, bolt or anchor cable support has become the main support method for coal mine roadway safety and efficiency, and has been widely used in coal mine roadways in my country. The anchor rod or anchor cable support is to anchor the anchor rod or anchor cable in the coal and rock body, tighten the rod (cable) tail nut (lock), apply a pre-tightening force to the surrounding rock, and restrain the deformation of the roadway surrounding rock from separation, fracture, etc. Expansion and slip dislocation. It is of great significance to study the axial load and axial deformation performance of bolt or cable support in the process of deepening the mechanism of bolt or cable support, improve the reliabilit...

AI Technical Summary

Problems solved by technology

[0004] The problem existing in the existing test equipment is that the force direction is single during the shear force test, and the variability of the force direction cannot be simulated under actual working conditions.

During the anti-corrosion test, the geological environment of the construction site was not simulated

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