Hydraulic pressing-shearing testing machine

Abstract

The invention relates to a hydraulic pressing-shearing testing machine. An upper pressing plate is equipped with an upper pressing plate pressing disk with a rotating axis extending in the upper and lower directions, and a lower pressing plate is equipped with a lower pressing plate pressing disk with a rotating axis extending in the upper and lower directions. A shearing plate upper pressing diskfor being matched with the upper pressing plate pressing disk to perform a shearing test on a rubber supporting seat on the upper side is rotatably arranged at the upper end of a shearing plate, anda shearing plate lower pressing disk for being matched with the lower pressing plate pressing disk to perform a shearing test on a rubber supporting seat on the lower side is rotatably arranged at thelower end of the shearing plate. The upper pressing plate pressing disk, the shearing plate upper pressing disk, the shearing plate lower pressing disk and the lower pressing plate pressing disk arecoaxially arranged, and the upper pressing plate pressing disk, the shearing plate upper pressing disk, the shearing plate lower pressing disk and the lower pressing plate pressing disk are provided with first stations and second stations with a rotation angle difference of 180 degrees. The hydraulic pressing-shearing testing machine can perform double-direction loading in the horizontal directionon the rubber supporting seats.

Description

technical field [0001] The invention relates to a hydraulic compression shear testing machine in the field of testing machines. Background technique [0002] Compression-shear testing machine is mainly used for testing the axial and radial compression, shear and rotational mechanical tests of rubber bearings under the compound conditions of compressive and shearing forces of various bridge plate and basin rubber bearings. Mechanical performance tests such as compressive elastic modulus, shear elastic modulus, allowable shear angle, friction coefficient and ultimate compressive strength of rubber bearings can be carried out. [0003] Existing hydraulic compression shear testing machines such as figure 1 As shown, the compression-shear testing machine includes a vertical loading mechanism and a horizontal loading mechanism, the vertical loading mechanism includes a vertical loading bracket, the vertical loading bracket includes a base, a column 5 and a beam 4, and a vertical ...

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Problems solved by technology

In this way, the shear resistance of the rubber bearing is tested. The problem with the existing hydraulic compression shear testing machine is that the loading trolley can only apply force to the rubber bearing because the loading trolley uses the vertical loading bracket as the reaction force frame. The force acting in one direction, that is to say, the shear plate can only exert a shear force in one direction on the rubber bearing, which is far from the bridge shear force on the rubber bearing in the real earthquake environment. In an earthquake environment, the bridge may shake back and forth in one direction, so the shear force on the rubber bearing is also a reciprocating action in one direction, and the deformation of the rubber bearing is not only in one direction, but the compression force in the prior art The shear test machine can only realize the shear test of the deformation of the rubber bearing in one direction, which is not in line with the real force of the rubber bearing

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