Anti-upwarp device for shear box

Abstract

The invention relates to an anti-upwarp device for a shear box. The anti-upwarp device is mounted on a shear tester in a bilateral symmetry manner. The anti-upwarp device is characterized in that an anti-upwarp device bracket comprises a base and an anti-upwarp block perpendicularly welded in the middle of the base, wherein reinforcement ribs are arranged between the base and the anti-upwarp block; the base is fixed on a side beam through a bracket fixing screw; the anti-upwarp block is horizontally fixed on a top layer stacking ring through an anti-upwarp block; a clearance is reserved between the anti-upwarp block and the top layer stacking ring. The anti-upwarp device for the shear box is simple in structure and high in mechanical strength; the problem that the shear box is upwarped and tilted in the shear test process in the prior art can be effectively solved, and the test precision is improved.

Description

technical field [0001] The invention relates to a scissor box anti-warping device. Background technique [0002] The shear tester is used to measure the shear strength of the soil. Usually, the soil sample is sheared by applying a horizontal force under different vertical pressures to obtain the shear stress when the shear plane is damaged, and then the shear resistance of the soil is determined according to Coulomb's law. Strength parameter. When the shear box is horizontally pressed during the actual shear test, the shear box will tilt slightly after being loaded due to the rolling of the soil sample particles on the shear surface, resulting in a decrease in the measurement accuracy of the tester. [0003] The traditional direct shear instrument has an infinite mechanism on the top of the scissors box, and the problem of the scissors box tilting upwards is very likely to occur during the test. Seriously affect the test accuracy. Especially for large coarse-grained soil ...

AI Technical Summary

Problems solved by technology

When the shear box is horizontally pressed during the actual shear test, the shear box will tilt slightly after being loaded due to the rolling of the soil sample particles on the shear surface, resulting in a decrease in the measurement accuracy of the tester

[0003] The traditional direct shear instrument has an infinite mechanism on the top of the scissors box, and the problem of the scissors box tilting upwards is very likely to occur during the test.

Seriously affect the test accuracy

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