Microcomputer control electro-hydraulic servo large bidirectional direct shear apparatus

Abstract

The invention discloses a microcomputer control electro-hydraulic servo large bidirectional direct shear apparatus. The direct shear apparatus can satisfy a sample with larger size, can apply higher stress ratio, can simulate practical condition really, and is suitable for experimental research on the mechanical properties of contact faces of a plurality of materials. The direct shear apparatus comprises a host machine (1), a hydraulic system (2) and an electro-hydraulic servo control system (3). The host machine (1) comprises a bearing machine frame, a vertical servo loading oil cylinder (103), an upper shearing test table (104), horizontal bearing brackets (106, 106'), horizontal shearing servo loading oil cylinders (105, 110), a lower shearing test table (108) and a combined shearing box device (109), wherein the bearing machine frame consists of a bearing cross beam (101), four upright posts (102) and a machine base (107); the horizontal shearing servo loading oil cylinders (105, 110) are arranged on the horizontal bearing brackets (106, 106') and have consistent central height; the lower shearing test table (108) comes in and comes out of a test position through a linear guide rail arranged on the machine base; and the combined shearing box device (109) is arranged on the lower shearing test table (108).

Description

technical field [0001] The invention relates to a direct shear test device. Background technique [0002] In recent years, due to the frequent occurrence of flood disasters caused by climate change, flood control work is urgent, and flood control projects are facing a huge test. The safety of water conservancy projects and flood control projects depends on the performance of engineering materials. Therefore, the experimental research on various water conservancy projects and flood control engineering materials cannot be ignored. However, the materials used in water conservancy projects and flood control projects are of various types and complex organizations, and there are many testing items for materials. The direct shear test equipment in the prior art is only suitable for small-sized samples, the load is small and the detection items are single. The existing problems are that it cannot be tested on larger-sized samples, cannot apply a large stress ratio, and cannot reali...

AI Technical Summary

Problems solved by technology

The direct shear test equipment in the prior art is only suitable for small-sized samples, the load is small and the detection items are single. The existing problems are that it cannot be tested on larger-sized samples, cannot apply a large stress ratio, and cannot realize complex forces. The detection of samples in the state can no longer meet the needs of large-scale water conservancy projects and flood control projects, and the diversification and complexity of materials.

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