Screw-in type soil sample preparation tool

Abstract

The invention relates to a screw-in type soil sample preparation tool. The screw-in type soil sample preparation tool is characterized in that the tail end of the soil sample preparation tool is provided with an external thread layer and is additionally provided with a tail cover, and the internal thread in the tail cover can sleeve on the tail of the soil sample preparation tool and can be screwed; and a rotating shaft is fixedly arranged at the center of the tail cover of the soil sample preparation tool, and is provided with a hole for the penetration of the rotating shaft, a metal rod the length of which exceeds the diameter of the tail cover of the soil sample preparation tool can penetrate through the rotating shaft through the hole, and the soil sample preparation tool is conveniently driven to rotate due to the rotation of the metal rod. When the soil sample preparation tool works, the end surfaces of knife edges are of inverted triangles, knife points are downward, the projection widths of knife tails in the vertical direction are greater than the thickness of the soil sample preparation tool, and the upper parts of the triangles of the end surfaces of the knife edges are downwards inclined from interior to exterior; and holes are uniform distributed in the part of the upper parts of the triangles of the end surfaces of the knife edges on a horizontal line of the contacting position of the tool wall, and the holes penetrate through the wall of the soil sample preparation tool, so that the knife edge can enter a soil sample to take soil easily.

Description

technical field [0001] The invention relates to the field of civil engineering sampling tools, in particular to a soil sample preparation tool. Background technique [0002] The soil sample preparation tool is a kind of test equipment used for soil engineering tests. It is mainly used to prepare soil samples for testing such as soil density and water content. The soil sample preparation tool is essentially a rigid cylindrical sleeve open at both ends, with a relatively sharp cutting edge at one end. In specific use, first prepare a relatively large soil sample, then place the soil sample preparation tool on the soil sample, the cutting edge is in contact with the surface of the sample, and then press down firmly to make the soil sample preparation tool enter the soil Sample. In the process of forcefully moving the soil sample preparation tool downward, the blade of the soil sample preparation tool cuts into the surrounding soil sample. When the soil sample preparation tool...

AI Technical Summary

Problems solved by technology

In traditional experiments, the soil sample preparation tool is pressed down into the soil sample by direct manual pressing. However, if the soil is hard, the knife edge is not easy to cut in, and simple manual pressing is even more difficult.

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