Hydraulic push clamp

Abstract

The invention discloses a hydraulic horizontally pushing clamp. The hydraulic horizontally pushing clamp comprises a clamp body, wherein the clamp body is provided with a pincer hole one side end of which is provided with an opening; the bottom of the pincer hole is provided with a top plate, the two ends of the top plate are respectively provided with a first inclined sliding block, and each first inclined sliding block is provided with a second inclined sliding block; the end parts of the second inclined sliding blocks are provided with second limiting blocks, and the two second inclined sliding blocks can be close to or far away from each other along vertical moving of the corresponding first inclined sliding blocks respectively so as to clamp or loosen a sample. The hydraulic horizontally pushing clamp provided by the invention has the advantages that the two ends of the top plate are respectively provided with the first inclined sliding blocks, the second inclined sliding blocks and the second limiting blocks, when the sample is clamped, the first inclined sliding blocks are driven to move through the top plate, the second inclined sliding blocks can not upward move under the action of the second limiting blocks, the sample is only clamped along a horizontal direction, the clamping manner can not generate an axial extrusion force on the sample, the influence factor of the test is reduced, the testing accuracy is improved, and the hydraulic horizontally pushing clamp is applied in a clamp pulling test, a pressing test and a fatigue test.

Description

technical field [0001] The invention relates to a fixture of a testing machine, in particular to a hydraulic horizontal pushing fixture. Background technique [0002] At present, the hydraulic clamps in the testing machine industry are all linear clamping, and generally include a clamp body with jaws. There are two inclined slideways arranged opposite to each other inside the jaws of the clamp body, and each inclined slideway is equipped with a Slanted sliders, clamping blocks are installed on each slanted slider. When clamping, that is, the piston of the hydraulic cylinder directly pushes the inclined slider to move upward along the inclined slide, so that the clamping block moves to the middle to reduce the distance between the two clamping blocks and clamp the sample, and at the same time, the clamping block will also move along the Walk in the direction of the hydraulic piston. The clamping force is formed by the test tension of the testing machine itself, and the oil ...

AI Technical Summary

Problems solved by technology

The current hydraulic clamps have the following defects: the testing machine is generally equipped with two identical hydraulic clamps, one hydraulic clamp is fixed, and the other hydraulic clamp is installed on a movable part (such as a movable beam)

When installing the sample, when the first hydraulic clamp has clamped one end of the sample, and the other end of the sample is clamped by another hydraulic clamp, the clamp block will clamp the sample radially, and it will also generate force on the sample. Axial extrusion force, this extrusion force will cause certain damage to the sample, and directly affect the accuracy of subsequent tests, and can only be used for tensile tests, and the clamps will be loosened during compression tests and fatigue tests

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