Mechanical type soil sampling apparatus

Abstract

The invention relates to a soil sampling device for measuring the bulk density of soil. The invention adopts a mechanical soil sampling device which is provided with a machine frame, wherein one end of the machine frame is provided with a longitudinal cutting mechanism, the middle part of the machine frame is provided with a soil sampler bracket, the bracket is provided with a soil sampler, and the other end of the machine frame is provided with a transverse feeding mechanism. The soil sampler is composed of a soil sampling pipe, a ring-shaped cutter, a soil sampling pipe shoe and a cutter-pushing ring, wherein the interior of the soil sampling pipe is provided with a plurality of ring-shaped cutters, one end of the ring-shaped cutter in the soil sampling pipe is provided with the cutter-pushing ring, a gap is arranged between the soil sampling pipe and the ring-shaped cutter, one end of the soil sampling pipe is provided with a convex ring matched with the soil sampler bracket, the other end of the soil sampling pipe is provided with the soil sampling pipe shoe, the soil sampling pipe shoe is connected with the screw thread of the outer wall of the soil sampling pipe, and the outer wall of the soil sampling pipe is provided with a scale. The invention has the advantages of the simple structure, the convenient use, the reliable operation, gaining a plurality of layers of soil sample once, the high efficiency, and ensuring the sampling quality.

Description

technical field [0001] The invention relates to the field of geotechnical testing, in particular to a soil-taking device for measuring soil bulk density. Background technique [0002] Soil bulk density is the weight per unit volume of soil without destroying the natural structure, usually expressed in grams per cubic centimeter. The bulk density of soil reflects the soil structure, air permeability, water permeability and water retention capacity. Generally, the soil bulk density of the plow layer is 1-1.3 grams / cubic centimeter, and the deeper the soil layer, the greater the bulk density, which can reach 1.4-1.6 grams / cubic centimeter. The smaller the soil bulk density, the better the soil structure, air permeability and water permeability. Measures such as deep plowing of orchards and increasing application of organic fertilizers can significantly reduce soil bulk density. [0003] In current agricultural production, the most classic method of soil extraction is to use t...

AI Technical Summary

Problems solved by technology

Patent No. 85202405, titled "A Soil Borrower for Testing Soil Bulk Density", can take samples directly, overcoming the soil sample errors that exist in prior art soil taking devices that require manual hammering to take samples, but it has not overcome The problem of slow sampling speed and low efficiency

[0004] The ring-knife method of taking soil to measure the soil bulk density needs to dig a section hole first, the operation process is complicated, and the degree of soil just filled with the ring-knife is not easy to control, it is easy to cause the soil not to fill the ring-knife or the soil sample is compacted, making the Bulk density produces error, which affects the test accuracy. Therefore, the circular knife method has the defects of low soil extraction efficiency and difficult guarantee of soil sample quality.

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