CN207133067U - A kind of rapid sampling attachment of portable undisturbed soil open column shape sample - Google Patents

Abstract

The utility model discloses a portable rapid sampling device for a hollow columnar sample of undisturbed soil, which comprises a positioning drill rod, the positioning drill rod is covered with a shaft sleeve, and the shaft sleeve is stationary relative to the positioning drill rod. It also includes an inner ring knife, the inner ring knife is sequentially connected with a first rotating part and the inner ring knife body from top to bottom, the first rotating part is set outside the shaft sleeve, the first rotating part can rotate around the shaft sleeve, and the inner ring knife The outer diameter of the body is the same as the inner diameter of the ring-shaped soil sample. It also includes an outer ring knife, the outer ring knife is sequentially connected with a second rotating part and the outer ring knife body from top to bottom, the second rotating part is set outside the first rotating part, and the second rotating part can rotate around the first rotating part , the inner diameter of the outer ring cutter body is the same as the outer diameter of the ring-shaped soil sample. The problem in the prior art that there is no specific test equipment for sampling the hollow columnar sample of undisturbed soil is solved, and the utility model can quickly sample the hollow columnar sample of undisturbed soil, and has strong controllability.

Description

A portable rapid sampling device for hollow cylindrical samples of undisturbed soil

technical field

The utility model relates to the fields of geotechnical engineering and soil mechanics, in particular to a portable rapid sampling device for a hollow columnar sample of undisturbed soil.

Background technique

The parameter determination of soil samples is a necessary item in civil engineering. It provides a variety of parameter basis for the design of above-ground and underground structures, and is the basis of structure design. Therefore, the determination of soil parameters has very important practical value and significance. The determination of soil parameters mostly requires the determination of the parameters of the undisturbed soil samples, that is, the undisturbed soil samples need to be obtained on site, and the measurement of some parameters currently requires the acquisition of hollow annular columnar soil samples.

At present, for the experiment of the hollow circular columnar undisturbed soil sample, the blocky undisturbed soil is generally taken out first, and then the sample is manually cut, and finally the hollow annular columnar soil sample is obtained, but the operation is cumbersome and the human disturbance is large. In the prior art, there is no more targeted test method and test equipment for sampling the undisturbed soil hollow columnar sample, and the existing tests have poor controllability.

Therefore, how to design a device that can quickly sample the undisturbed soil hollow columnar sample while enhancing the controllability is a technical problem that we need to solve.

Utility model content

The purpose of this utility model is to provide a portable rapid sampling device for undisturbed soil hollow columnar samples, which solves the problem in the prior art that there is no more targeted test equipment for sampling undisturbed hollow columnar samples of soil. It can quickly sample the undisturbed soil hollow columnar sample, and has strong controllability.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model provides a portable rapid sampling device for a hollow columnar sample of undisturbed soil, which comprises a positioning drill rod, the positioning drill rod is covered with a shaft sleeve, and the shaft sleeve is stationary relative to the positioning drill rod.

It also includes an inner ring knife, the inner ring knife is sequentially connected with a first rotating part and the inner ring knife body from top to bottom, the first rotating part is set outside the shaft sleeve, the first rotating part can rotate around the shaft sleeve, and the inner ring knife The outer diameter of the body is the same as the inner diameter of the ring-shaped soil sample.

It also includes an outer ring knife, the outer ring knife is sequentially connected with a second rotating part and the outer ring knife body from top to bottom, the second rotating part is set outside the first rotating part, and the second rotating part can rotate around the first rotating part , the inner diameter of the outer ring cutter body is the same as the outer diameter of the ring-shaped soil sample.

Furthermore, the utility model is characterized in that:

The top of the positioning drill pipe is connected with a placement platform, the upper end of the placement platform is connected with a leveling level, and a leveling bubble is arranged in the leveling level.

The lower part of the positioning drill rod is provided with several rows of steel nails.

The bottom of the inner ring cutter body is provided with a first toothed notch; the bottom of the outer ring cutter body is provided with a second toothed notch.

A first rotating device capable of rotating the first rotating part is connected to an upper part of the first rotating part, and a second rotating device capable of rotating the second rotating part is connected to an upper part of the second rotating part.

The inner surface of the bushing is rough and the outer surface is smooth.

The positioning drill pipe, the inner ring cutter and the outer ring cutter are all made of high-strength, high-rigidity stainless steel.

The shaft sleeve is made of high-strength polymer material.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model provides a portable rapid sampling device for the hollow columnar sample of undisturbed soil, which is positioned by the positioning drill rod; and the hollow cylindrical sample of the undisturbed soil is quickly sampled by the rotation of the inner ring knife and the outer ring knife. The principle is simple and easy. Understand, small footprint, convenient, safe and flexible operation, can effectively improve test efficiency, enhance test controllability, reduce test cost, and have good use and promotion value.

Further, the horizontal level is located on the top of the positioning drill pipe for evaluating the level of the device, wherein a central level bubble is set for real-time observation of the level of the device, so that it can be corrected and adjusted in time during the sampling process.

Description of drawings

Fig. 1 is a structural schematic diagram of a portable rapid sampling device for a hollow cylindrical sample of undisturbed soil provided by the utility model.

Among them, 1. Horizontal level; 2. Positioning drill pipe; 3. Shaft sleeve; 4. Inner ring cutter; 5. Outer ring cutter; 6. Toothed notch; 7. Steel nail.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to FIG. 1 , the utility model provides a portable rapid sampling device for a hollow cylindrical sample of undisturbed soil, including a positioning drill rod 2 , which is covered with a shaft sleeve 3 , and the shaft sleeve 3 is stationary relative to the positioning drill rod 2 .

Also includes the inner ring knife 4, the inner ring knife 4 is sequentially connected with the first rotating part and the inner ring knife body from top to bottom, the first rotating part is set outside the shaft sleeve 3, and the first rotating part can rotate around the shaft sleeve 3 , the outer diameter of the inner ring cutter body is the same as the inner diameter of the ring-shaped soil sample.

Also includes the outer ring knife 5, the outer ring knife 5 is sequentially connected with the second rotating part and the outer ring knife body from top to bottom, the second rotating part is set outside the first rotating part, and the second rotating part can rotate around the first rotating part. The inner diameter of the outer ring cutter body is the same as the outer diameter of the ring-shaped soil sample taken.

Illustratively, the horizontal level 1 is set on the placement platform, located on the top of the positioning drill pipe 2, and is used to evaluate the level of the device, wherein a central level bubble is provided for real-time observation of the level of the device, which is convenient for sampling during the sampling process. can be corrected and adjusted in a timely manner.

The positioning drill pipe 2 is made of high-strength, high-rigidity stainless steel material. The horizontal level 1 is arranged on its top, and the bottom end is provided with a steel nail 7. The steel nail 7 must be reliably welded with the positioning drill pipe 2. The local positioning drill pipe 2 is drilled into the soil to play a positioning role, and to provide a fulcrum for drilling of soil samples.

The shaft sleeve 3 is made of non-deformable high-strength polymer material, the inner surface is roughened, and the outer surface is smoothed. High friction contact, the two do not rotate each other, and the outside is smooth, providing a rotating shaft for the drilling of the ring cutter;

The inner ring knife 4 is made of high-strength, high-rigidity stainless steel material, and the first toothed notch 6 is arranged at the bottom, which is convenient to cut into or screw into the soil, and the outer diameter is the inner diameter of the ring-shaped soil sample to ensure Integrity and original characteristics of the interior of the soil sample; the upper part of the first rotating part of the inner ring knife 4 is connected with a first rotating device, which can easily rotate the first rotating part to rotate.

The outer tool changer is located on the outermost periphery and is also made of high-strength, high-rigidity stainless steel. Its inner diameter is the size of the outer diameter of the ring-shaped soil sample, and there is a second tooth-shaped incision 6 at the bottom, which is convenient for cutting or screwing into the soil. After drilling into the soil body, it is taken out as a whole, so as to complete the rapid removal of the annular columnar sample. The upper part of the second rotating part of the outer ring knife 5 is connected with a second rotating device, which can easily rotate the second rotating part.

It should be noted that the main material of the utility model is high-strength, high-rigidity stainless steel material, which ensures that no large deformation or damage occurs during the sampling process.

The utility model provides a portable rapid sampling device for the hollow columnar sample of the undisturbed soil, which is positioned by the positioning drill rod 2; the inner ring knife 4 and the outer ring knife 5 are rotated to quickly sample the hollow columnar sample of the undisturbed soil, The principle is simple and easy to understand, the floor space is small, the operation is convenient, safe and flexible, it can effectively improve the test efficiency, enhance the controllability of the test, reduce the cost of the test, and has good use and promotion value.

Claims (6)

1. A kind of 1. rapid sampling attachment of portable undisturbed soil open column shape sample, it is characterised in that including positioning drilling rod (2), Axle sleeve (3) is cased with outside positioning drilling rod (2), axle sleeve (3) is static relative to positioning drilling rod (2)；

   Also including interior cutting ring (4), interior cutting ring (4) is sequentially connected provided with the first rotating part and interior cutting ring body from top to bottom, and first Rotating part is enclosed on axle sleeve (3) outside, and the first rotating part can rotate around axle sleeve (3), and the external diameter of interior cutting ring body is with taking ring-type native The internal diameter of body sample is identical；

   Also including outer cutting ring (5), outer cutting ring (5) is sequentially connected provided with the second rotating part and outer cutting ring body from top to bottom, and second Rotating part is enclosed on outside the first rotating part, and the second rotating part can rotate around the first rotating part, and the internal diameter of outer cutting ring body is with being taken The external diameter of ring-type soil body sample is identical.
2. 2. the rapid sampling attachment of portable undisturbed soil open column shape sample according to claim 1, it is characterised in that fixed Placement platform is connected with the top of position drilling rod (2), the upper surface of placement platform is connected with level vial device (1), level vial device (1) level vacuole is provided with.
3. 3. the rapid sampling attachment of portable undisturbed soil open column shape sample according to claim 1, it is characterised in that fixed The bottom of position drilling rod (2) is provided with some row's steel nails (7).
4. 4. the rapid sampling attachment of portable undisturbed soil open column shape sample according to claim 1, it is characterised in that interior The bottom of cutting ring body is provided with the first teeth cutouts (6)；The bottom of outer cutting ring body is provided with the second teeth cutouts (6).
5. 5. the rapid sampling attachment of portable undisturbed soil open column shape sample according to claim 1, it is characterised in that the The top of one rotating part is connected with the first rotating device that can rotate the first rotating part, and the top of the second rotating part is connected with The second rotating device that can rotate the second rotating part.
6. 6. the rapid sampling attachment of portable undisturbed soil open column shape sample according to claim 1, it is characterised in that axle Cover the rough inner surface of (3), smooth outer surface.