Cylinder type soil sampling device for detection

Abstract

The invention discloses a cylinder type soil sampling device for detection. The cylinder type soil sampling device comprises a transverse plate and a sampling cylinder, wherein a spiral shaft is arranged between a top plate and the transverse plate; a bearing is arranged at the side wall of a lifting rod; a slide sleeve is arranged on the spiral shaft, and is connected with the spiral shaft in a thread matching way; the outside wall of the slide lifting rod is connected with the inner wall of a rotary sleeve pipe through a spline; the interior of the side wall of the sampling cylinder is provided with an annular cavity which is coaxial with the sampling cylinder; an annular press plate is arranged at the bottom part of the annular cavity; a plurality of inclined through holes are formed inthe inside wall of the annular cavity; a guide rod is arranged in each inclined through hole, the upper end of each guide rod is connected with the inclined surface of an annular press plate througha slide mechanism, and the lower side of the annular press plate is connected with the bottom wall of the annular cavity through a reset spring. The cylinder type soil sampling device has the advantages that the structure is simple, the sampling efficiency is higher, the bending and breaking of the sampling cylinder are avoided, the disengaging from the sampling cylinder due to moving-up of sampling soil is avoided, the labor intensity is lower, the operation is simple and convenient, and the practicality is stronger.

Description

technical field [0001] The invention relates to geological sampling equipment, in particular to a cylinder type soil sampling device for detection. Background technique [0002] The collection and analysis of soil is of great significance, such as the study of agricultural production, soil pollution control, animal and plant research, etc. Therefore, there are also various soil collection tools, and the most commonly used sampling tool is the soil auger. The soil drill consists of a tubular drill bit connected to the drill pipe and a handle fixed to the upper end of the drill pipe. When taking soil samples, hold the handle and rotate vigorously to lock the soil in the pipe of the drill bit, and then use a thin stick to squeeze out the required soil. Scraping, this method of collecting soil is time-consuming and laborious, which has a strong impact on the work efficiency of soil collection. Generally, when using this type of soil drill to collect relatively dense deep soil, ...

AI Technical Summary

Problems solved by technology

The soil drill consists of a tubular drill bit connected to the drill pipe and a handle fixed to the upper end of the drill pipe. When taking soil samples, hold the handle and rotate vigorously to lock the soil in the pipe of the drill bit, and then use a thin stick to squeeze out the required soil. Scraping, this method of collecting soil is time-consuming and laborious, which seriously affects the work efficiency of soil collection

Generally, when using this kind of soil drill to collect relatively dense deep soil, the operator needs to hit the drill pipe with a hammer to generate a large downward force, so that the soil drill can enter the deep soil layer. The material of the drill pipe has a high requirement for firmness, and the drill pipe is easily deformed if it is directly hit

Similarly, with the increase of sampling depth, the difficulty of taking out the sampler will also increase, which not only consumes manpower, but also easily leads to problems such as damage to the soil extractor

In addition, it is very difficult to take out the soil column in the tubular drill bit, especially when it is necessary to ensure the structural shape of the soil column, it is easier to cause damage when taking out the soil column, and the efficiency of the soil extraction process is low

Sampling with the sampling cylinder may cause the soil to be hard and cause the sampling cylinder to bend and break. At the same time, when the sampled soil is connected with the bottom soil, the sampling cylinder may be separated from the sampling cylinder, resulting in sampling failure.

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