A soil borrower for testing soil density by the ring knife method

Abstract

The invention discloses a soil-sampling machine for testing soil density through a cutting-ring method. The soil-sampling machine comprises an inner barrel, an outer barrel, a connecting structure and an upper circular cutter, wherein the outer barrel is sleeved on the outer wall of the inner barrel; the connecting structure is in sliding connection with the inner barrel and the outer barrel; the upper circular cutter is arranged in the outer barrel and is located under the inner barrel; and the outer wall of the upper circular cutter is closely attached to the inner wall of the outer barrel. When the soil is sampled, the inner barrel is slid at first and the circular cutter is driven to be completely pressed into the soil, and then the outer barrel is pressed into the soil and surrounded on the outer periphery of the circular cutter; the outer wall of the circular cutter is closely attached to the inner wall of the outer barrel, so that the circular cutter and the inner barrel are together taken out of the soil when the outer barrel is upward lifted; the inner barrel is downward slid along the vertical direction, the circular cutter is jacked out of the outer barrel by the inner barrel, and then the circular cutter is taken away, so that the soil-sampling process is completed, the whole soil-sampling process is simplified, and the working efficiency is increased; and the circular cutter filled with soil can be directly used as a sample for testing soil density through the cutting-ring method.

Description

technical field [0001] The invention relates to the technical field of geotechnical testing, in particular to a soil borrower used for testing soil density by a ring-knife method. Background technique [0002] At present, in the soil density test, the accuracy of the soil density measurement results mainly depends on the sampling and sample processing, and the soil sampling is very important, and the soil is usually taken by a soil extractor. [0003] Chinese patent document CN204964231U discloses a kind of earth-moving machine, which comprises an inner cylinder, an outer cylinder, a handle, a connecting rod, a pedal and a ring knife. Wherein, the outer cylinder is sleeved on the outer wall of the inner cylinder, and the tops of the inner cylinder and the outer cylinder both have flanges extending outward, and the two flanges are connected by buckles; the handle is fixed inside by a connecting rod. On the top of the cylinder flange, the pedal is passed through the connectin...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the phenomenon of soil scattering is easy to occur in the soil removal process of the prior art, and the soil taken out cannot directly be used as the sample of the ring knife method to test the soil density.

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