Oscillation three axis determinator equipped with confined pressure steady compensator

Abstract

The invention is equipped with a vibration triaxial measuring apparatus of confined pressure stabilizing compensator, the machine rack is equipped with triaxial cell, the upper part is equipped with force transmission axis, the upper part of the force transmission axis connecting bar is equipped with axial direction servo-hydraulic system, the power cylinder pulls the force transmission axis through the oil cylinder piston, the bottom part of the force transmission axis is equipped with sample hat, the connecting bar of the force transmission axis is also equipped with a load cell; the side of the triaxial cell is equipped with confined pressure pressurization system, the system is equipped with lateral water cylinder, which is characterized in that the confined pressure compression system is equipped with confined pressure stabilizing compensator, the structure is that: the lateral water tank is connected with lateral fluid pressure cylinder, at the same time the upper part of the power cylinder is equipped with water cylinder which is connected with force transmission axis coaxially in series, and is connected with lateral water tank through pressure-proof steel hollow steel tube. The invention solves the problem that the lateral confined pressure is not sufficient in prior art, or the confined pressure fluctuation range is too large, which exceeds the allowable error, the confined pressure is stable when the invention is vibrated in axial direction, the confined pressure fluctuation range does not exceed 2the confined pressure value. At the same time, the lateral confined pressure can be added up to 5MPa.

Description

technical field [0001] The application relates to a civil engineering testing machine, in particular to a vibration triaxial measuring instrument provided with a confining pressure stabilization compensator. Background technique [0002] Large-scale vibrating triaxial measuring instrument (commonly known as vibrating triaxial measuring instrument) is the most commonly used instrument for measuring the dynamic characteristics of coarse-grained soil, such as dynamic strength, dynamic modulus, and dynamic deformation parameters. The structure of the large-scale vibration triaxial measuring instrument in the prior art is: a triaxial pressure chamber is arranged in the frame, a force transmission shaft is arranged above the triaxial pressure chamber, and an axial servo hydraulic system is arranged at the upper end of the connecting rod of the force transmission shaft: the The structure of the axial servo hydraulic system is that the power cylinder (axial vibrator) pushes and pull...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem in the prior art that the amplitude of lateral confining pressure fluctuations is too large and exceeds the allowable error, the purpose of this application is to provide a vibration triaxial measuring instrument equipped with a confining pressure stabilization compensator. The pressure can be kept stable, and the confining pressure fluctuation range does not exceed 2% of the confining pressure value during the larger dynamic test

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