Screw type soil-taking and sample-cutting apparatus

Abstract

The invention relates to a screw type soil-taking and sample-cutting apparatus. A separable screw device is additionally arranged on a soil-taking cutting ring; the screw device comprises a cutting ring seat top board and a support column perpendicular to and fixedly connected with a pedestal, wherein the cutting ring seat top board is located at the upper part of the support column and is movably connected with the support column through a bolt, the central position of the cutting ring seat top board is provided with a bearing capable of sliding along the cutting ring seat top board, a movable bolt on the bearing is connected with a force applying rod, and the cutting ring is arranged below a force applying plate. During soil sampling, a soil sample is placed on the pedestal of the apparatus, then the blade of the cutting ring is downwardly put on the soil sample, the cutting ring seat top board is pulled upwardly to allow the force applying plate to be rightly placed on the top of the cutting ring, and then the cutting ring seat top board is forcibly pulled upwards to allow the force applying plate to uniformly exert forces on the cutting ring so as to enable the cutting ring to enter into the soil sample. According to the invention, the cutting ring is improved, so the cutting ring can be smoothly pressed into a hard soil sample for sampling by using ordinary manual pushing; and force application is uniform in the whole sampling process, and sampling efficiency and quality are improved.

Description

technical field [0001] The invention relates to the field of civil engineering sampling tools, in particular to a soil sampling and cutting device. Background technique [0002] The ring knife 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. A ring knife is essentially a rigid, open-ended cylindrical sleeve with a sharper edge at one end. In specific use, a relatively large soil sample is prepared first, and then the ring knife is placed on the soil sample, the cutting edge is in contact with the surface of the sample, and then pressed down firmly to make the ring knife enter the soil sample. In the process of forcefully moving the ring knife downward, the blade of the ring knife cuts into the surrounding soil samples. When the ring knife completely enters and penetrates the soil sample layer, the soil sample in the ring knife is taken out to make a complete sample. so...

AI Technical Summary

Problems solved by technology

In the traditional experiment, the ring knife is pressed down into the soil sample by manual direct pressing. However, if the soil is hard, it is difficult to manually press the ring knife into the sample.

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