Spiral-downward undisturbed soil triaxial sample maker

Abstract

The application relates to a spiral-downward undisturbed soil triaxial sample maker, and belongs to the technical field of the indoor soil engineering testing of the civil engineering subject. The sample maker comprises a support mechanism, a cutting mechanism, and a sample bearing mechanism; the lifting of the cutting mechanism is driven by two lifting shafts, two wedge-shaped detachable cuttingblades replace the manual cutting, the cutting blades with two different diameters are used for cutting the soil sample into the cylinder samples required by the test in twice; a cutting speed switchis turned off after the sample making is accomplished, a cutting turntable is ascended to take out the made sample. The undisturbed soil cannot be disturbed in the cutting process, the influences of uncertain factors and artificial factors in the soil cutting process are avoided, and the sample making can be precisely and efficiently accomplished; compared with a soil cutter of undisturbed soil inthe existing laboratory, the sample making efficiency is doubled, and the sample making time is about 15min.

Description

technical field [0001] The application relates to a spin-down type undisturbed soil triaxial sample preparation device, which belongs to the technical field of indoor geotechnical testing in the discipline of civil engineering. Background technique [0002] At present, with the continuous development of the construction industry, it is necessary to determine the mechanical properties of the undisturbed soil at the beginning of the project. Triaxial mechanical tests are usually used to provide information for the design of building structures. When the undisturbed soil is tested for triaxial mechanical tests, the cylindrical soil body with a diameter of 150 mm and a height of 200 mm should be made into a standard sample. The standard sample is usually a cylinder with a diameter of 39.1 mm and a height of 80 mm; To disturb the sample, appropriate sample preparation equipment, commonly called a soil cutter or sampler, must be used. [0003] At present, although the sample prep...

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Problems solved by technology

[0005] The present invention provides a spin-down type undisturbed triaxial sample sample preparation device to solve the problem of cumbersome operation steps in the sample preparation process of the existing sample preparation equipment, which is greatly affected by the operating proficiency of the sample preparation personnel, low sample preparation efficiency, and low sample preparation efficiency. During the sample preparation process, the disturbance of the soil sample is large, and the success rate of sample preparation is not high.

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