Cutting ring soil sampling device capable of preventing soil from loosening

Abstract

The utility model relates to the technical field of cutting ring soil sampling, and discloses a cutting ring soil sampling device capable of preventing soil from loosening, the integrity of soil blocks in a cutting ring is kept through structures such as a main cylinder, an inner cutting ring and an outer cutting ring, and a sawtooth thread groove is formed in the inner wall of the outer cutting ring, so that after soil enters the main cylinder from the inner part of the outer cutting ring, the soil blocks are loosened. As the top cover is located above the main cylinder and matched with the containing groove, when a user knocks the top cover through tools such as a hammer, the soil entering the main cylinder can be squeezed into the soil blocks by the bottom face of the top cover and the inner wall of the inner ring cutter, and the soil blocks are separated from the inner wall of the inner ring cutter; and finally, after the device is completely excavated out, the integrity of soil blocks in the inner cutting ring can be kept at a large probability, and the effect of protecting the integrity is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ring knife soil sampling, especially to a ring knife soil sampling device capable of preventing soil loosening. BACKGROUND

[0002] The ring knife is a commonly used instrument for sampling undisturbed soil for experiments, and is used for tests such as bulk density, compression, shear, and permeability. When using the ring knife, the cutting edge should be directed downward, and the soil sample should be cut vertically and uniformly to avoid tilting. A small amount of vaseline can be applied to the ring knife before use. After use, the ring knife should be cleaned and coated with protective oil to prevent rusting.

[0003] In actual use, the ring knife is hammered into the soil, and an external tool such as a shovel is needed to dig out the soil around the ring knife to facilitate the removal of the ring knife and the internal soil. However, due to the loosening of the soil, the integrity of the soil inside the ring knife may not be fully preserved, and the incomplete soil clumps cannot be tested. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides a ring knife soil sampling device capable of preventing soil loosening, which has the advantages of maintaining the integrity of the soil clumps and facilitating soil sampling, thereby solving the problems raised in the background.

[0005] The utility model provides the following technical scheme: a ring knife soil sampling device capable of preventing soil loosening, comprising a main cylinder, a placing groove is formed in the inside of the main cylinder, a threaded groove is formed below the placing groove in the inside of the main cylinder, the diameter of the placing groove is larger than that of the threaded groove, a top cover is slidably installed on the top of the main cylinder, a ring knife holder is provided on the top of the top cover, an inner ring knife is slidably installed in the inside of the main cylinder, the main cylinder and the inner ring knife are both short tubular steel products, and an outer ring knife is threadedly connected to the bottom of the inside of the main cylinder.

[0006] Through the above structure, the top of the main cylinder is provided with a top cover to prevent the soil inside the main cylinder and the inner ring knife from falling out of the top of the main cylinder when digging out the soil around the main cylinder. After the ring knife holder is set, the user can use a hammer or other tool to knock the device into the ground, which helps the device sink up and down in the soil. It should be noted that the device needs to be knocked and sunk on a flat soil surface.

[0007] Preferably, the inner ring knife is slidably installed between the inner walls of the placing groove, the outer wall of the inner ring knife is matched with the inner wall of the placing groove, the bottom of the top cover is matched with the inner wall of the placing groove, and the outer ring knife is threadedly installed in the threaded groove.

[0008] Through the structural arrangement, since the diameter of the placing groove is larger than the diameter of the threaded groove, the inner ring cutter will not fall out of the threaded groove after being placed in the placing groove, thereby achieving the limiting effect on the inner ring cutter.

[0009] Preferably, a thread is arranged above the outer ring of the outer ring cutter, the thread is matched with the threaded groove, a blade head is arranged below the outer ring of the outer ring cutter, and a sawtooth threaded groove is arranged in the inner ring cutter.

[0010] Through the structural arrangement, the inner wall of the outer ring cutter is provided with the sawtooth threaded groove, so as to increase the friction between the soil and the inner wall of the outer ring cutter after the soil enters the main cylinder from the inner part of the outer ring cutter, and the outer ring cutter is threadedly connected with the main cylinder, so as to be detachable.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The ring cutter soil sampling device capable of preventing soil loosening, which realizes the integrity of the soil in the inner ring cutter through the main cylinder, the inner ring cutter and the outer ring cutter, and the inner wall of the outer ring cutter is provided with the sawtooth threaded groove, so as to increase the friction between the soil and the inner wall of the outer ring cutter after the soil enters the main cylinder from the inner part of the outer ring cutter, and the friction is greater, so that the possibility of the soil incompleteness is greatly reduced. Since the top cover is arranged above the main cylinder and matched with the placing groove, when a user knocks the top cover by using a hammer or the like, the soil in the main cylinder is extruded into soil blocks by the bottom surface of the top cover and the inner wall of the inner ring cutter, and the integrity of the soil in the inner ring cutter can be maintained with a high probability after the device is completely dug out, so that the effect of protecting the integrity is achieved.

[0013] 2. The ring cutter soil sampling device capable of preventing soil loosening, which is convenient to disassemble and assemble through the arrangement of the main cylinder, the inner ring cutter and the outer ring cutter, the sliding installation of the inner ring cutter in the main cylinder and the threaded installation of the outer ring cutter at the bottom of the main cylinder, so that the device is quickly installed through the sliding and threaded modes when in use, and is convenient to disassemble and assemble when disassembled. ACCURACY OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a whole structure internal schematic view of the utility model;

[0016] Figure 3 It is a whole structure explosion schematic view of the utility model;

[0017] Figure 4 It is a main cylinder structure internal schematic view of the utility model.

[0018] In the figure: 1, main cylinder; 11, placing groove; 12, thread groove; 2, top cover; 21, ring cutter holder; 3, inner ring cutter; 4, outer ring cutter; 41, thread; 42, blade head; 43, sawtooth thread groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figures 1-3 A ring cutter soil taking device capable of preventing soil loosening, comprising a main cylinder 1, a top cover 2 is slidably installed on the top of the main cylinder 1, a ring cutter holder 21 is arranged on the top of the top cover 2, an inner ring cutter 3 is slidably installed in the main cylinder 1, the main cylinder 1 and the inner ring cutter 3 are both short tubular steel products, and have the characteristics of wear resistance and corrosion resistance, and the outer ring cutter 4 is threadedly connected to the bottom of the inner ring cutter 3.

[0021] The top cover 2 is arranged on the top of the main cylinder 1 to prevent the soil in the main cylinder 1 and the inner ring cutter 3 from falling out of the top of the main cylinder 1 when the soil around the main cylinder 1 is dug out, and the ring cutter holder 21 is arranged to facilitate the user to use a hammer or other tools to knock the device into the ground, thereby assisting the device to sink in the soil. It should be noted that the device needs to be knocked and sunk on a flat soil surface.

[0022] Please refer to Figures 1-4 The placing groove 11 is arranged in the main cylinder 1, the inner ring cutter 3 is slidably installed between the inner walls of the placing groove 11, the outer wall of the inner ring cutter 3 is matched with the inner wall of the placing groove 11, and the bottom of the top cover 2 is matched with the inner wall of the placing groove 11. When the inner ring cutter 3 is slidably installed into the placing groove 11, vaseline is evenly applied on the inner wall of the placing groove 11 or the outer wall of the inner ring cutter 3, which facilitates demolding of the inner ring cutter 3 after the soil is taken, and the thread groove 12 is arranged below the placing groove 11 in the main cylinder 1, and the outer ring cutter 4 is threadedly installed in the thread groove 12.

[0023] Since the diameter of the placing groove 11 is larger than the diameter of the thread groove 12, the inner ring cutter 3 will not fall out of the thread groove 12 after being placed in the placing groove 11, thereby limiting the inner ring cutter 3.

[0024] Please refer to Figures 1-4The outer ring cutter 4 is provided with a thread 41 above the outer ring of the outer ring cutter 4, the thread 41 is matched with the thread groove 12, the blade head 42 is arranged below the outer ring of the outer ring cutter 4, the blade head 42 can separate the soil in the inner ring of the outer ring cutter 4 from the soil in the outer ring after contacting the ground, and the inner wall of the outer ring cutter 4 is provided with a sawtooth thread groove 43.

[0025] The sawtooth thread groove 43 is arranged in the inner wall of the outer ring cutter 4, so that the friction between the soil and the inner wall of the outer ring cutter 4 is increased after the soil enters the main cylinder 1 from the inside of the outer ring cutter 4, and the outer ring cutter 4 is threadedly connected with the main cylinder 1, which is detachable, facilitates the processing of the soil below the main cylinder 1 after the soil sampling is completed, makes the soil taken out of the device more compact, the friction is greater, and the possibility of incomplete soil block is greatly reduced. Since the top cover 2 is located above the main cylinder 1 and matched with the placing groove 11, when the user knocks the top cover 2 with a hammer or other tools, the soil in the main cylinder 1 is extruded into a soil block by the bottom surface of the top cover 2 and the inner wall of the inner ring cutter 3, and the integrity of the soil block in the inner ring cutter 3 can be maintained with a high probability after the device is completely dug out, thereby achieving the protection effect.

[0026] Working principle: select the test point, lubricate the installation position of the inner ring cutter 3 in the placing groove 11 with a little vaseline, facilitate the demolding of the inner ring cutter 3, cover the top cover 2 on the top of the main cylinder 1, screw the outer ring cutter 4 into the bottom of the main cylinder 1, complete the installation work between the main cylinder 1, the top cover 2, the inner ring cutter 3 and the outer ring cutter 4, place the blade head 42 of the outer ring cutter 4 downward on the soil layer, vertically press or knock the top of the ring cutter support 21 with a hammer, so that the soil sample enters the inner ring cutter 3 through the inside of the outer ring cutter 4, and at the same time, the soil entering the inner ring cutter 3 is matched with the inner wall of the inner ring cutter 3, so that the soil is extruded into a soil block. When the inner ring cutter 3 and the outer ring cutter 4 are filled with soil, the soil around the device is excavated to facilitate the removal of the device, the soil above the opening of the outer ring cutter 4 is cut after being removed, the outer ring cutter 4 is screwed out of the inside of the main cylinder 1, the inner ring cutter 3 and the internal soil block are extruded from the bottom of the main cylinder 1 by using a tool with the same diameter as the outer ring cutter 4, the excess soil above the plane of the inner ring cutter 3 is cut after the extrusion is completed, and the trimming is completed, and the sampling is completed.

Claims

1. A cutting ring soil sampling device capable of preventing soil loosening, comprising a main barrel (1), characterized in that: The inside of the main cylinder (1) is provided with a placing groove (11), the inside of the main cylinder (1) is provided with a threaded groove (12) below the placing groove (11), the diameter of the placing groove (11) is larger than that of the threaded groove (12), the top of the main cylinder (1) is slidably provided with a top cover (2), the top of the top cover (2) is provided with a ring cutter holder (21), the inside of the main cylinder (1) is slidably provided with an inner ring cutter (3), the inner ring cutter (3) and the main cylinder (1) are both short tubular steel products, and the bottom of the inside of the main cylinder (1) is threadedly sleeved with an outer ring cutter (4).

2. The cutting ring soil sampling device according to claim 1, wherein: The inner ring cutter (3) is slidably arranged between the inner walls of the placing groove (11), the outer wall of the inner ring cutter (3) is matched with the inner wall of the placing groove (11), the bottom of the top cover (2) is matched with the inner wall of the placing groove (11), and the outer ring cutter (4) is threadedly arranged in the threaded groove (12).

3. The cutting ring soil sampling device according to claim 2, wherein: The outer ring cutter (4) is provided with a thread (41) above the outer ring thereof, the thread (41) is matched with the threaded groove (12), the outer ring cutter (4) is provided with a blade head (42) below the outer ring thereof, and the inside of the outer ring cutter (4) is provided with a sawtooth threaded groove (43).

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