CN109187073B

CN109187073B - Spiral static pressure undisturbed soil sampler

Info

Publication number: CN109187073B
Application number: CN201811125856.6A
Authority: CN
Inventors: 汤涤洛; 汪玮; 涂修亮; 汪红武; 郝向阳; 熊伟
Original assignee: Xianning Agriculture Academy Of Sciences
Current assignee: Xianning Agriculture Academy Of Sciences
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2021-06-11
Anticipated expiration: 2038-09-26
Also published as: CN109187073A

Abstract

The invention discloses a spiral static pressure undisturbed soil sampler, which consists of a spiral soil cutting cylinder, a sampling cylinder and a fixed connecting bearing; the spiral soil cutting cylinder comprises a rotary handle, a spiral soil cutting ring cutter, a vertical ring cutter and a soil cylinder body; the rotary handle is fixed at the top of the soil barrel body, and the spiral soil cutting ring cutter is spirally distributed on the outer wall of the soil barrel body; the vertical cutting ring is arranged at the bottom of the soil barrel body; the fixed connection bearing consists of a ball bearing and a control bracket; the outer ring of the ball bearing is connected with the inner wall of the spiral soil cutting pipe, the inner ring of the ball bearing is connected with the outer wall of the sampling tube, the two parts can rotate relatively, and the groove can be clamped into the control bracket. Compared with the existing soil sampler and the existing cutting ring, the soil sampler has the advantages of simpler structure, reliable performance and simple operation, can ensure that the taken soil sample is not disturbed or is less disturbed, has simpler and labor-saving soil sampling process, is less damaged to the surrounding soil environment, and can take deeper soil samples.

Description

Spiral static pressure undisturbed soil sampler

Technical Field

The invention relates to a sampling device, in particular to an undisturbed soil sampling device.

Background

The prior art has the following disadvantages: most of soil samplers used in the existing agriculture, geological exploration and engineering are cutting rings, surface soil sampling by using the cutting rings is convenient and reliable, when sampling exceeds a certain depth, a cutting ring soil sampling method cannot meet requirements, and due to the fact that the cutting rings are not uniformly cut, soil sample disturbance is inevitably caused to affect soil sampling quality.

Disclosure of Invention

The invention provides a soil sampler which has the advantages of uniform downward cutting of a cutting ring, no disturbance of a soil sample and high soil sampling quality.

The technical scheme of the invention is as follows: the spiral static pressure undisturbed soil sampler consists of a spiral soil cutting cylinder, a sampling cylinder and a fixed connecting bearing; the spiral soil cutting cylinder comprises a rotary handle, a spiral soil cutting ring cutter, a vertical ring cutter and a soil cylinder body; the rotary handle is fixed at the top of the soil barrel body, and the spiral soil cutting ring cutter is spirally distributed on the outer wall of the soil barrel body; the vertical cutting ring is arranged at the bottom of the soil barrel body; the sampling tube consists of a sampling tube body, and grooves are formed in two ends of the top of the sampling tube body; the fixed connection bearing consists of a ball bearing and a control bracket; the outer ring of the ball bearing is connected with the inner wall of the spiral cutting soil barrel, the inner ring of the ball bearing is connected with the outer wall of the sampling barrel, the spiral cutting soil barrel and the sampling barrel can rotate relatively, and the groove can be clamped into the control bracket.

Further, the number of the rotating handles is four.

Furthermore, the knife face of the spiral soil cutting ring knife is inclined downwards.

Furthermore, a handle is also arranged on the control bracket.

Compared with the existing soil sampler and the existing cutting ring, the soil sampler has the advantages of simpler structure, reliable performance and simple operation, can ensure that the taken soil sample is not disturbed or is less disturbed, has simpler and labor-saving soil sampling process, is less damaged to the surrounding soil environment, and can take deeper soil samples.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a spiral static pressure undisturbed soil sampler of the present invention;

FIG. 2 is a schematic view of a soil barrel structure of the spiral static pressure undisturbed soil sampler of the present invention;

FIG. 3 is a schematic view of a sampling barrel structure of the spiral static pressure undisturbed soil sampler of the present invention;

FIG. 4 is a schematic view of a fixed connecting bearing of the spiral static pressure undisturbed soil sampler of the present invention;

FIG. 5 is a schematic view of a ball bearing structure of the spiral static pressure undisturbed soil sampler of the present invention;

wherein, 1-spiral cutting soil cylinder, 101-rotating handle; 102-spiral soil cutting ring cutter; 103-vertical cutting ring; 104-a soil barrel body; 2-a sampling tube; 201-sampling tube body; 202-grooves; 3-fixedly connecting a bearing; 301-ball bearings; 302-control stand; 3011-ball bearing outer ring; 3012-ball bearing inner ring.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

referring to fig. 1, a spiral static pressure undisturbed soil sampler is mainly composed of a spiral soil cutting cylinder 1, a sampling cylinder 2 and a fixed connection bearing 3.

The spiral soil cutting cylinder 1 consists of a rotary handle 101, a spiral soil cutting ring cutter 102, a vertical ring cutter 103 and a soil cylinder body 104. The rotating handles 101 are divided into four parts and fixed on the top of the soil barrel body 104; the spiral soil cutting ring cutters 102 are spirally distributed on the outer wall of the soil barrel body 104; the vertical cutting ring 103 is arranged at the bottom of the soil barrel body 104.

The rotating handle 101 is mainly used for an operator to hold and rotate to apply force; the spiral soil cutting ring cutter 102 is mainly used for converting horizontal rotation torque of an operator into vertical downward cutting force of the soil sampler through the process of rotating soil cutting, so that the soil sampler can slowly and uniformly cut into soil; the vertical cutting ring 103 is mainly used for vertically cutting soil downwards, so that the soil inside and outside the cutting ring is separated to avoid disturbing the soil to be sampled on the inner side in the soil cutting process of the spiral cutting ring.

The sampling tube 2 is a sampling tube body 201 of a thin-wall metal straight tube, a pair of symmetrically distributed rectangular grooves 202 are formed in the top of the sampling tube and can be clamped into the control bracket 302, and the helical soil cutting tube 1 does not rotate in the process of cutting soil and descending, and vertically cuts soil for sampling in a static pressure mode.

Fixed connection bearing 3 comprises ball bearing 301 and control support 302, ball bearing 301 mainly plays the effect of connecting spiral soil cutting barrel 1 and sampler barrel 2, ball bearing outer ring 3011 links to each other with spiral soil cutting barrel 1 inner wall, ball bearing inner ring 3012 links to each other with sampler barrel 2 outer wall, make two parts rotate relatively simultaneously, control support 302 fixed connection is at ball bearing inner ring top, the primary function is for cutting 1 rotatory soil cutting in-process control sampler barrel 2 irrotations at spiral soil cutting barrel, cut when soil finishes through rotatory this control support drive sampler barrel make in the barrel soil sample separate with the lower part soil body.

The assembling method comprises the following steps: placing the sampling cylinder 2 in the spiral-cut soil cylinder and connecting the sampling cylinder with the spiral-cut soil cylinder through a fixed connecting bearing; they may each be a threaded connection.

The key technology of the double-acting spiral static-pressure undisturbed soil sampler is the manufacture and assembly of the spiral soil cutting cylinder, and the cutter face of the spiral soil cutting ring cutter slightly inclines downwards, so that the cutting ring cutter can cut into the soil body smoothly.

The method comprises the following specific using steps:

1. before use, a small amount of vaseline is uniformly coated on the spiral cutting ring on the outer side of the spiral soil barrel and the inner wall of the spiral soil barrel of the sampler for lubrication;

2. removing surface impurities and needing no floating soil in a sampling place, vertically arranging a sampler at a soil sampling point, tightly holding a long handle of a control bracket by an operator to be immobile, preventing a sampling cylinder from rotating along with a spiral soil cutting cylinder, rotating the handle at a constant speed by the operator, reasonably controlling the rotating speed by the operator, ensuring that the soil sampler sinks at the constant speed to cut the soil, and manually applying certain pressure on the top of the sampler if the sampler cannot enter the soil smoothly when the soil is cut so that the soil sampler can enter the soil body smoothly;

3. when the soil sampler drills into a preset soil sampling depth, the rotating handle is stopped, and the other operator rotates the long handle of the control bracket to separate a soil sample in the sampling barrel from a soil body on the lower part under the rotating action;

4. when the soil sample in the sampling cylinder is completely separated from the lower soil body, the rotating handle is rotated reversely, so that the soil sampler rises at a constant speed until the soil sampler rises out of the ground;

5. and after the sampler grows out of the ground, the sampling cylinder is dismounted to take out the soil sample.

Claims

1. The spiral static pressure undisturbed soil sampler consists of a spiral soil cutting cylinder, a sampling cylinder and a fixed connecting bearing; the spiral-cut soil barrel is characterized by comprising a rotary handle, a spiral-cut soil cutting ring cutter, a vertical ring cutter and a soil barrel body;

the rotary handle is fixed at the top of the soil barrel body, and the spiral soil cutting ring cutter is spirally distributed on the outer wall of the soil barrel body; the vertical cutting ring is arranged at the bottom of the soil barrel body;

the sampling cylinder is composed of a sampling cylinder body, and grooves are formed in two ends of the top of the sampling cylinder body;

the fixed connecting bearing consists of a ball bearing and a control bracket; the outer ring of the ball bearing is fixedly connected with the inner wall of the spiral cutting soil barrel, the inner ring of the ball bearing is fixedly connected with the outer wall of the sampling barrel, and the spiral cutting soil barrel and the sampling barrel can rotate relatively,

the groove is clamped into the control bracket, and a handle is further arranged on the control bracket.

2. The spiral static pressure undisturbed soil sampler of claim 1 wherein said rotatable handles are four in number.

3. The spiral static pressure undisturbed soil sampler of claim 1 wherein said spiral soil cutting ring has a face that slopes downwardly.