Soil auger for undisturbed bisect soil column of filed soil

Abstract

The invention relates to a soil auger for an undisturbed bisect soil column of filed soil, which comprises a power device, an undisturbed soil inner cylinder, a helical outer cylinder and soil cutting devices. The power device is positioned on the top of the soil auger; the power device, the undisturbed soil inner cylinder and the helical outer cylinder are arranged concentrically up and down. A fixing sleeve for the undisturbed soil inner cylinder on a fixed shaft on the lower part of a direction-changing gear case of the power device is coupled to the undisturbed soil inner cylinder. The undisturbed soil inner cylinder is arranged in the helical outer cylinder, and downwards passes through a shield bearing on the lower part of an inner wall of the helical outer cylinder; and two parallel sheet helixes are welded on the outer wall of helical outer cylinder; two helical soil scrapers are welded at the bottoms of the two parallel sheet helixes; and a set of soil cutting device is arranged at the opposite positions of the outer wall of helical outer cylinder respectively. The soil auger has the advantages of simple structure, simple and convenient operation and convenient carrying, is suitable for field survey, observation and sampling related to soil, guarantees the undisturbed performance and the representativeness of the soil, reduces the working capacity, avoids damaging the soil sample environment, and has the advantages of wide application, accuracy and high efficiency.

Description

technical field [0001] The invention relates to a soil-borrowing drill for undisturbed soil profiles in the field, in particular to a field survey soil type, soil fertility and soil pollution status, collection of undisturbed soil columns of soil undisturbed sections and undisturbed soil samples of different depth soil layers, and observation of undisturbed soil profiles The properties of the soil undisturbed profile soil column to take the soil drill. Background technique [0002] Existing field soil surveys require excavating a 1.0-2.0m long x 1.0m wide x 1.5-2.0m deep soil profile pit or using a hollow drill to cut vertically and other methods such as hammering or impact drilling to classify the soil system Investigation, soil type classification, soil configuration analysis, soil profile observation, soil fertility characteristics and soil nutrient migration changes, soil ecological investigation, soil environmental pollution and undisturbed soil sample collection at dif...

AI Technical Summary

Problems solved by technology

[0002] Existing field soil surveys require excavating a 1.0-2.0m long x 1.0m wide x 1.5-2.0m deep soil profile pit or using a hollow drill to cut vertically and other methods such as hammering or impact drilling to classify the soil system Investigation, soil type classification, soil configuration analysis, soil profile observation, soil fertility characteristics and soil nutrient migration changes, soil ecological investigation, soil environmental pollution and undisturbed soil sample collection at different depths, etc., the workload is heavy and the efficiency is low , the degree of damage to the sample plot environment is large

[0003] Adopt existing Luoyang shovel and hammer type, impact type earth-borrowing drill and other existing earth-borrowing drills, can not prevent the extruding and compacting between the drill wall and the soil taken and between the soil inside the drill body, and also The influence of the surrounding soil on the extrusion force and soil shear stress of the undisturbed soil column cannot be eliminated, and the original state of the soil is inevitably changed. Pollution and other influences destroy the soil formation layer and change the physical characteristics of the soil profile such as soil structure and pore conditions, which cannot meet the needs of scientific experiments, field management and other agricultural practical technologies and agricultural technology promotion. The soil natural structure profile and undisturbed soil The original shape and representativeness required by the sample, and the non-standard and non-standard sampling lead to uneven soil sampling depth and volume, inaccurate, large errors between samples, poor comparability, and the original shape and poor representation

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