Lever-aided soil sampler

Abstract

The invention relates to a hand-operated soil sampler including: a T-shaped handle, an extending rod, scales, square-shaped grooves, a bottom end of the extending rod, a separate-type drill, sawtooth-shaped single-blade annular cutter, and a plurality of aiding apparatuses. In the invention, the action force of a conventional T-shaped rod, according to torque, is converted into action force basedon lever principle, so that force application modes during drilling and fetching soil can be converted; meanwhile, by adjusting the length of a telescopic rod, work load on an operator can be reduced;the square-shaped grooves in the extending rod can be matched with the aiding apparatus, so that different square-shaped grooves can be changed according to depth of drilling and fetching soil; if the soil is hard and needs to drill to a farther depth, the aiding apparatuses can act on one drilling rod at the same time. By means of the sawtooth-shaped single-blade annular cutter, the drill can drill the soil conveniently; the separate-type drill can achieve separation between a soil column and the inner wall of the drill. The soil sampler has reasonable design, can save manpower, is high in working speed, effectively solves the problems of drilling and fetching soil during soil collection, and greatly improves work efficiency.

Description

technical field [0001] What the present invention relates to is a kind of soil collection appliance technology, specifically a kind of lever-assisted type soil stratification sampler. Background technique [0002] Soil sampling is a necessary link in the study of soil environmental quality and the migration and transformation of pollutants in soil. The acquisition of soil profile information is mainly realized through stratified sampling technology. [0003] According to the "Technical Specifications for Soil Environment Monitoring" (HJT 166-2004), the soil profile is based on soil characteristics, and the soil plane vertically downward from the topsoil is divided into sampling areas at different levels, and multi-point sampling is performed in the middle of each layer, etc. When it is necessary to test heavy metal indicators, avoid soil contact with the metal surface. A practical and convenient soil layered sampler is the key to accurate and complete collection of soil pro...

AI Technical Summary

Problems solved by technology

[0007] The manual soil sampler is easy to carry, easy to operate, and convenient for field soil sampling, but it is more labor-intensive; the power soil sampler uses gasoline power, which can greatly reduce the labor intensity of the soil sampler, and has the advantages of fast and deep samples, but the instrument Power facilities are required and the cost is high. Due to the limitation of field conditions, manual soil samplers are generally used to collect soil at a depth of 0-100cm. Although manual samplers have the advantages of being easy to carry and do not require power facilities, the current manual soil layered sampling However, the following deficiencies still exist:

[0008] 1. The soil sampler works by applying torque force, but when the drill pipe penetrates into the soil layer, due to the short drill pipe and high resistance, it is difficult to rotate the handle, the torque force becomes smaller, and the soil drilling is laborious; the same reason When sampling, due to the short drill pipe and strong suction, it is difficult to rotate the handle, and the sampler is difficult to remove

[0009] 2. During the soil drilling process of the soil sampler, some stones or fine sand may cause the deformation of the PVC lining placed on the inner wall of the drill bit, making it difficult to pull out the lining when taking soil. After pulling out the soil, it must be removed. The part in contact with the inner wall of the drill bit is removed, which affects the undisturbed soil sample

[0010] 3. The shape of the top of the drill bit of the soil sampler is flat, which is not conducive to the drilling of the sampler

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