Bi-parting type membrane bearing cylinder for improved stress and strain type triaxial apparatus

Abstract

The invention discloses a bi-parting type membrane bearing cylinder for an improved stress and strain type triaxial apparatus. The bi-parting type membrane bearing cylinder is characterized in that two semi-circular cylinder bodies are subjected to abutting joint to form a cylinder body; a positioning spigot and a sealing rubber strip are arranged on an abutting joint part; corresponding hanging lugs and fixed connecting pieces are arranged on the surfaces of the semi-circular cylinder bodies positioned on one side of the abutting joint part; the other side of the abutting joint part is configured to hinged connection; longitudinal and horizontal air grooves crossed with each other are respectively formed in the inner surfaces of the two semi-circular cylinder bodies; the horizontal air grooves of the two semi-circular cylinder bodies subjected to abutting joint are connected with each other, and an air hole penetrating through a cylinder wall is formed in the air groove of one of thesemi-circular cylinder bodies; the air hole is communicated with an external air extraction pipe, and a piston is arranged in the pipe. According to the bi-parting type membrane bearing cylinder disclosed by the invention, a piston is controlled by utilizing a pull ring, air extraction can be realized so as to ensure that a latex membrane is adhered. The bi-parting type membrane bearing cylinder disclosed by the invention has the characteristics of simple and reasonable structure and convenience in using.

Description

technical field [0001] The invention belongs to the accessories of geotechnical testing instruments, in particular to an improved stress-strain triaxial [0002] The split-type film-supporting cylinder of the instrument. Background technique [0003] The film bearing cylinder is an essential accessory for sealing the sample and transferring the sealed sample to the triaxial instrument. [0004] The existing film-supporting cylinder is an integral component that cannot be disassembled, and its composition includes a cylinder, an air hole at the intersection of the air grooves in the middle of the cylinder, and an air suction nozzle connected to the air hole. [0005] When the film-supporting cylinder is working, the air in the film-supporting cylinder is firstly sucked by the suction ear ball through the suction pipe, so that the cylindrical latex mold installed in the cylinder is flatly attached to the inner wall of the film-bearing cylinder, and it is set on the supporting...

AI Technical Summary

Problems solved by technology

[0006] The problem existing in the existing film-supporting cylinder is that due to the metal material and inseparable performance, it is very easy to seal the sample in the working state and the sealing of the film-supporting cylinder is not tight during the process of detaching from the triaxial instrument, which will damage the sample. Cleaning and other issues

Moreover, the operation steps of the existing film-supporting cylinder for setting the sample and sealing the sample are relatively cumbersome, and it is easy to disturb the sample and affect the accuracy of the experiment.

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