Loess sample sampling device with soil sample cutting and extraction function

Abstract

The present invention discloses a loess sample sampling device with soil sample cutting and extraction function, the loess sample sampling device with soil sample cutting and extraction function comprises a plurality of stand columns, a lower pressing plate, a horizontal fixed plate, a sampling cutter and a soil sample cutting and extraction mechanism, the sampling cutter is arranged on the bottom of the lower pressing plate, the horizontal fixed plate is provided with a lifting mechanism for driving the lower pressing plate to move up and down; the sampling cutter comprises a sampling ring cutter and a cylindrical protection casing, the sampling ring cutter vertically cuts into a loess soil layer from top to down, the cylindrical protection casing enters the loess soil layer synchronously with the sampling ring cutter, the soil sample cutting and extraction mechanism comprises a translational mechanism and a rotary cutting mechanism, the translational mechanism is located below the lower pressing plate, the rotary cutting mechanism is located below the translational mechanism, the rotary cutting mechanism comprises two translational cutting boards, two arc-shaped cutters, and multiple straight cutting steel wires, the two arc-shaped cutters are respectively arranged on the bottoms of the translational cutting boards, and the multiple straight cutting steel wires are connected between bottoms of the two arc-shaped cutters. The loess sample sampling device with soil sample cutting and extraction function is simple in structure, reasonable in design, easy to use and operate and good in use effect, and can be used for simply and fast completing a sampling procedure, and the sampling effect is good.

Description

technical field [0001] The invention relates to a soil sample sampling device, in particular to a loess sample sampling device with the functions of cutting and extracting soil samples. Background technique [0002] The soil fetcher is used to lift the undisturbed soil of the lower layer of the test soil as a sample to understand its properties. When sampling the undisturbed soft soil sample, a thin-walled soil fetcher is usually used to obtain the soil. During the soil collection process, in order to make the soft soil weak structure The skeleton is well preserved and less damaged, so the process of soil extraction needs to be very careful, minimizing or even avoiding the disturbance of soil samples from factors such as soil extraction tools and soil extraction methods. The diameter of the soil fetcher should not be less than Φ120mm. For sandy soil, a soil fetcher with a smaller diameter can be used to prevent the soil sample from falling off during extraction. In the actu...

AI Technical Summary

Problems solved by technology

In the actual sampling process, in order to understand the address status of a certain stratum, it is often necessary to take soil vertically downward. Sampling failure due to soil sample falling off, disturbance caused by the separation of the bottom of the soil sample collected in the earth taker from the underlying stratum, etc.

In addition, existing soil extractors also have defects such as inconvenient use and operation, poor use effect, etc.

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