Pressure-shear testing machine with side guide rail and vertical loading cylinder

Abstract

The invention discloses a pressure-shear testing machine with a side guide rail and a vertical loading cylinder. The pressure-shear testing machine is characterized by including a machine frame, a vertical cylinder, a rolling guide rail, a load platform, a clamping mechanism and a pulley device; the clamping mechanism comprises a pretension bolt, a pushing plate, a first clamping plate and a second clamping plate, wherein the pretension bolt is mounted on one side of the machine frame, the pushing plate is connected with one end, located at the inner side of the machine frame, of the pretension bolt, the first clamping plate is installed on the surface of the pushing plate, the second clamping plate is installed on the machine frame, the load platform is arranged between the first clampingplate and the second clamping plate, a cylinder body of the vertical cylinder is installed above the machine frame, a piston rod of the vertical cylinder is arranged facing the load platform and fixed on the upper surface of the load platform, the pulley device is arranged on the machine frame and connected with the rolling guide rail. The pressure-shear testing machine with the side guide rail and the vertical loading cylinder provided by the invention can effectively solve the problems of design and manufacturing of large-load shearing force guide devices.

Description

technical field [0001] The invention relates to a compression-shear testing machine with a lateral guide rail and a vertically loaded oil cylinder. Background technique [0002] At present, more and more attention is paid to the anti-seismic requirements of structures, and the demand for seismic isolation bearings is getting higher and higher. Therefore, there are more and more corresponding testing equipment for seismic isolation bearing compression shear testing equipment. This type of testing machine mainly needs to test The data are mainly the vertical stiffness and horizontal stiffness of the isolation bearing. Under different vertical loads, the horizontal stiffness curve (dynamometer diagram) must be tested; in general, the vertical load of the compression-shear testing machine The relationship between the horizontal shear load and the horizontal shear load is 10:1, and the testing machine needs to do vertical tests and horizontal shear tests. When doing shear tests, ...

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Problems solved by technology

[0002] At present, more and more attention is paid to the anti-seismic requirements of structures, and the demand for seismic isolation bearings is getting higher and higher. Therefore, there are more and more corresponding testing equipment for seismic isolation bearing compression shear testing equipment. This type of testing machine mainly needs to test The data are mainly the vertical stiffness and horizontal stiffness of the isolation bearing. Under different vertical loads, the horizontal stiffness curve (dynamometer diagram) must be tested; in general, the vertical load of the compression-shear testing machine The relationship between the horizontal shear load and the horizontal shear load is 10:1, and the testing machine needs to do vertical tests and horizontal shear tests. When doing shear tests, the vertical load must be kept constant, and there are also certain precision requirements. During the test, the horizontal shear force will be transmitted to the vertical loading system through the specimen and other tooling, which will affect the accuracy of the test. This is especially important for the guide device to resist lateral force. Generally, the horizontal shear force When it is less than 100 tons, the anti-lateral guide rail can use linear guide rail. When the load is too large, basically exceeding the maximum load of the linear guide rail, it is not easy to design and manufacture. We also used to increase the slider Quantitative methods are used to meet the requirements of large loads, but the processing accuracy and equipment accuracy of the testing machine are strict, and the process is not easy to realize. During the test, the linear guide rail is often damaged, wasting a lot of money and time. , after a series of improvements, the guide rails we use adopt our self-designed and manufactured rolling guide rail device, which solves the above key problems. However, during the test process, the guide rails move vertically, and the shear tension must be guaranteed If the guide rail does not slip when the pressure is transformed, it is necessary to solve the problem that the guide rail is completely consistent with it during the vertical cylinder movement.

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