Soil detection sampling device

Abstract

The invention provides a soil detection sampling device, and belongs to the technical field of environment detection. The soil detecting and sampling device comprises a drilling barrel, a circle of fan-shaped drilling teeth are arranged at the bottom end of the drilling barrel, the fan-shaped drilling teeth swing inwards to be in a horizontal state through the bottom end to seal the bottom end of the drilling barrel, a detachable sampling pipe is arranged in the center of the drilling barrel, and a circle of fan-shaped partition plate is arranged on the inner side wall of the drilling barrel. The bottom end of the fan-shaped partition plate swings inwards to be tightly attached to the sampling pipe to divide an inner cavity of the drilling barrel, the fan-shaped partition plate is in the state that the bottom end inclines inwards in the initial state, a piston body is arranged in the sampling pipe and plugs an opening in the bottom end of the sampling pipe, and a first driving structure and a second driving structure which can ascend and descend are arranged on the inner wall of the drilling barrel. The first driving structure can drive the fan-shaped drill teeth to rotate, and the second driving structure can drive the fan-shaped partition plate to rotate. The device has the advantages that the soil sampling purity is high, backfilling is not needed, and the sample sampling operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental detection, and in particular to a soil detection sampling device. Background Art

[0002] In order to achieve real-time monitoring of the soil, a soil sampler is one of the tools frequently used in environmental monitoring. Soil samples are taken out through the sampler, and then the soil samples are tested and analyzed to obtain the various components contained in the soil and then determine the degree of soil contamination.

[0003] For example, the patent with application number 202310433398.7 provides a soil sampling and detection device, including a fixed frame, a drill pipe, a sampling pipe, a transmission assembly and a drive assembly. Under the action of the first drive unit, the drill pipe rotates and moves downward, and the drill bit arranged at the lower end of the drill pipe stirs the soil. When the drill pipe reaches the specified depth, under the action of the second drive unit, the sampling pipe slides downward relative to the drill pipe. During the downward sliding of the sampling pipe, the lower end of the sampling pipe can push the drill blocks away from each other, so that the sampling pipe remains clean before sampling, thereby improving the purity of the sampling. During the downward sliding of the sampling pipe for sampling, under the action of the transmission assembly, the support sleeve of the sliding sealing sleeve arranged on the outside of the sampling pipe slides upward, so that the space inside the sampling pipe increases, and the air pressure inside the sampling pipe decreases, so as to prevent the soil sample entering the sampling pipe from slipping out of the sampling pipe, thereby further improving the purity of the sampling.

[0004] In the above-mentioned prior art, although it is possible to collect soil samples by passing the sampling tube downward through the drill pipe after the soil is drilled out, thereby improving the collection purity. However, in the actual operation process, since the drill pipe discharges a large amount of soil other than the sample when drilling the soil, it is necessary to backfill the soil sample after the soil sample sampling operation is completed, which affects the operation efficiency of sample collection. In view of this, the present application provides a soil detection sampling device. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a soil detection sampling device.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A soil detection sampling device comprises a drill barrel, wherein a circle of fan-shaped drill teeth is arranged at the bottom end of the drill barrel, and the fan-shaped drill teeth are swung inwardly to a horizontal state by the bottom end to close the bottom end of the drill barrel, and the fan-shaped drill teeth are in a state with the bottom end vertically facing downward in an initial state, a detachable sampling tube is arranged at the center of the drill barrel, and a circle of fan-shaped partitions is arranged on the inner side wall of the drill barrel, and the fan-shaped partitions are swung inwardly to be close to the sampling tube by the bottom end to separate the inner cavity of the drill barrel, and the fan-shaped partitions are in an initial state with the bottom end tilted inwardly, the upper and lower ends of the sampling tube are in an open state, a piston body is arranged in the sampling tube, and the piston body blocks the open bottom end of the sampling tube, and the inner wall of the drill barrel is provided with a first driving structure and a second driving structure that can be raised and lowered, the first driving structure can drive the fan-shaped drill teeth to rotate, and the second driving structure can drive the fan-shaped partition to rotate.

[0008] Furthermore, the first driving structure includes an outer ring body, an inner ring body, a first connecting rod and a first upper connecting ring. The outer ring body can be lifted and lowered on the bottom of the inner wall of the drill barrel, and the inner ring body can be lifted and lowered on the inner surface of the outer ring body. The two ends of the first connecting rod are respectively connected to the first upper connecting ring and the inner ring body, and the first upper connecting ring is located above the drill barrel, the inner surface of the fan-shaped drill tooth contacts the outer side surface of the inner ring, and the outer side of the top end of the fan-shaped drill tooth contacts the lower end surface of the drill barrel.

[0009] Furthermore, the outer end of the top of the fan-shaped drill tooth is located on the same circumferential plane as the inner wall surface of the drill barrel when the fan-shaped drill tooth rotates to a horizontal state, and a telescopic rod is arranged between the inner ring body and the outer ring body, and the telescopic rod is used to control the maximum rising distance of the inner ring body on the outer ring body.

[0010] Furthermore, the first driving structure also includes a first lifting control ring and a first oil cylinder. The first lifting control ring is rotatably sleeved on the top of the first upper connecting ring, and one side of the first lifting control ring is connected to the first oil cylinder.

[0011] Furthermore, the second driving structure includes a pressure rod, a push rod, a second connecting rod and a second upper connecting ring, the pressure rod and the push rod are arranged on the upper and lower sides of the outer end of the fan-shaped partition, the second connecting rod is installed inside the wall of the drill barrel, the pressure rod and the push rod are fixedly installed on the second connecting rod, and the top end of the second connecting rod passes through the drill barrel and is fixed to the second upper connecting ring.

[0012] Furthermore, the fan-shaped partition includes a fan-shaped plate body, a fan-shaped connecting part and a block-shaped connecting part. The rotation center of the fan-shaped plate body is the bottom of its outer end, the fan-shaped connecting part is a fan-shaped structure with the rotation center of the fan-shaped plate body as a circle, and the fan-shaped connecting part is fixedly installed on the outer end of the fan-shaped plate body, the block-shaped connecting part is fixedly installed on the outer surface of the fan-shaped connecting part, and the block-shaped connecting part is located between the pressure rod and the top rod.

[0013] Furthermore, the second driving structure also includes a second lifting control ring and a second oil cylinder. The second lifting control ring is rotatably sleeved on the outside of the second upper connecting ring, and one side of the second lifting control ring is connected to the second oil cylinder.

[0014] Furthermore, a first inner bracket is fixedly mounted on the inner surface of the second upper connecting ring, and the sampling tube is threadedly connected to the center of the first inner bracket.

[0015] Furthermore, a second inner bracket is installed inside the first upper connecting ring, a piston rod is installed on the top of the piston body, a circular plate is arranged on the top of the piston rod, a through hole with an inner diameter larger than the outer diameter of the sampling tube is opened at the center of the second inner bracket, the outer diameter of the circular plate is larger than the inner diameter of the through hole, and when the fan-shaped drill teeth and the fan-shaped partition are in a horizontal state, the lower surface of the circular plate contacts the upper surface of the second inner bracket.

[0016] Furthermore, the outer rotating sleeve of the drill barrel is provided with a lifting seat, a rotating motor is installed on the lifting seat, the power end of the rotating motor is connected to the drill barrel by a transmission belt, the lifting seat can be lifted and lowered on the frame, the lifting seat is threadedly connected with a lifting screw, one end of the lifting screw is connected to a forward and reverse motor for controlling the rotation of the lifting screw, and the bottom end of the lifting screw is rotatably installed on the frame.

[0017] The present invention has the following beneficial effects:

[0018] 1. By setting fan-shaped drill teeth and fan-shaped partitions, after the drill tube drills into the soil to a preset sampling depth, the fan-shaped partition rotates inwardly through the lower end and cooperates with the sampling tube to separate the inner cavity of the drill tube, and the fan-shaped drill teeth rotate inwardly through the bottom end to seal the bottom end of the drill tube, so that the sampled soil sample can be separated between the fan-shaped partition and the fan-shaped drill teeth. Afterwards, the fan-shaped drill teeth continue to move upward and cooperate with the upward movement of the piston body, and the fan-shaped drill teeth press the sample soil from the bottom end of the sampling tube into the sampling tube. By cooperating with the suction effect of the piston body, not only the sample collection amount can be increased, but also the sample is convenient to enter the sampling tube, thereby improving the sample collection purity and making the collection of soil samples more convenient.

[0019] 2. Sampling is performed inside the drill barrel by setting sampling tubes. Moreover, all the soil will be retained inside the drill barrel when the drill barrel is drilling into the soil. Furthermore, after the sampling is completed, all the soil will remain in the original place when the drill barrel is pumping out the soil, which will not cause soil loss and does not require secondary soil backfilling operations, making it more convenient to collect soil samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 The present invention Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 The present invention Figure 1 A partial cross-sectional view of

[0023] Figure 4 The present invention Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 It is a schematic diagram of the pressure rod, the push rod and the second connecting rod in the drill tube of the present invention;

[0025] Figure 6 The present invention Figure 5 Enlarged view of point C in the middle;

[0026] Figure 7 It is a schematic diagram of the limiting groove of the present invention.

[0027] In the figure: 1, drill barrel; 2, fan-shaped drill teeth; 3, sampling tube; 4, fan-shaped partition; 4.1, fan-shaped plate body; 4.2, fan-shaped connecting part; 4.3, block-shaped connecting part; 5, piston body; 6, outer ring body; 7, inner ring body; 8, first connecting rod; 9, first upper connecting ring; 10, telescopic rod; 11, first lifting control ring; 12, first oil cylinder; 13, pressure rod; 14, push rod; 15, second connecting rod; 16, second upper connecting ring; 17, second lifting control ring; 18, second oil cylinder; 19, first inner bracket; 20, second inner bracket; 21, piston rod; 22, circular plate; 23, through hole; 24, lifting seat; 25, rotating motor; 26, transmission belt; 27, lifting screw; 28, forward and reverse motor; 29, limit groove; 30, limit block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, the present embodiment provides a soil detection sampling device, comprising a drill barrel 1, a circle of fan-shaped drill teeth 2 is arranged at the bottom end of the drill barrel 1, the fan-shaped drill teeth 2 are swung inwardly to a horizontal state by the bottom end to close the bottom end of the drill barrel 1, and the fan-shaped drill teeth 2 are in a state with the bottom end vertically facing downward in the initial state, a detachable sampling tube 3 is arranged at the center of the drill barrel 1, a circle of fan-shaped partitions 4 is arranged on the inner side wall of the drill barrel 1, the fan-shaped partitions 4 are swung inwardly by the bottom end to be close to the sampling tube 3 to separate the inner cavity of the drill barrel 1, and the fan-shaped partitions 4 are in a state of inclination inwardly at the bottom end in the initial state, the upper and lower ends of the sampling tube 3 are in an open state, a piston body 5 is arranged in the sampling tube 3, the piston body 5 blocks the bottom end of the sampling tube 3, and the inner wall of the drill barrel 1 is provided with a first driving structure and a second driving structure that can be raised and lowered, the first driving structure can drive the fan-shaped drill teeth 2 to rotate, and the second driving structure can drive the fan-shaped partition 4 to rotate.

[0030] When the drill tube 1 is drilling the soil, the sampling tube 3 is inserted into the soil along with the drill tube 1 . The fan-shaped partition 4 can break the soil below the sampling tube 3 to reduce the resistance of the soil to the sampling tube 3 , making it easier to insert the sampling tube 3 into the soil.

[0031] When collecting soil samples, the fan-shaped drill teeth 2 are used to close the bottom end of the drill tube 1 through the first driving structure, and the fan-shaped partition 4 is used to separate the inner cavity of the drill tube 1 through the second driving structure, so that the collected soil sample is located between the fan-shaped partition 4 and the fan-shaped drill teeth 2 and is separated from the rest of the soil in the drill tube 1. Then, the piston body 5 is used to suck the soil into the sampling tube 3 to achieve the sampling operation of the soil sample.

[0032] During the sampling process, all the soil is located in the drill tube 1. After the sampling is completed, the sampling tube 3 is directly pulled out, and then the drill tube 1 is pulled out of the soil. At this time, all the soil will stay in the original position and will not be taken away from the ground. In particular, the fan-shaped partition 4 can crush the soil in contact with the inner wall of the drill tube 1 during the rotation of the drill tube 1 to reduce the adhesion between the soil and the inner wall of the drill tube 1. Furthermore, after the soil sampling is completed, there is no need to perform soil backfilling.

[0033] The first driving structure includes an outer ring body 6, an inner ring body 7, a first connecting rod 8 and a first upper connecting ring 9. The outer ring body 6 is installed in a liftable manner at the bottom of the inner wall of the drill barrel 1, and the inner ring body 7 is liftable and sleeved on the inner surface of the outer ring body 6. The two ends of the first connecting rod 8 are respectively connected to the first upper connecting ring 9 and the inner ring body 7, and the first upper connecting ring 9 is located above the drill barrel 1. The inner surface of the fan-shaped drill tooth 2 contacts the outer side surface of the inner ring, and the outer side of the top end of the fan-shaped drill tooth 2 contacts the lower end surface of the drill barrel 1.

[0034] In the initial state, the fan-shaped drill tooth 2 is limited by the drill barrel 1, so that its bottom end cannot rotate outward. At the same time, the inner surface of the fan-shaped drill tooth 2 is in contact with the inner ring body 7, and the inner ring lift prevents the fan-shaped drill tooth 2 from rotating inward. Furthermore, by utilizing the cooperation between the inner ring body 7 and the drill barrel 1, the fan-shaped drill tooth 2 can keep its tip vertically facing downward during drilling operations, so as to ensure that it has good drilling performance.

[0035] The inner ring body 7 leaves the inner surface of the fan-shaped drill tooth 2 by moving upward. At this time, when the outer ring body 6 moves upward, the bottom end of the drill barrel 1 causes the bottom end of the fan-shaped drill tooth 2 to rotate inward. When the fan-shaped drill tooth 2 rotates to a horizontal state, the bottom of the outer end of the fan-shaped drill tooth 2 in this state contacts the inner wall surface of the drill barrel 1. At this time, the drill barrel 1 can keep the fan-shaped drill tooth 2 in a horizontal state.

[0036] Specifically, by setting the distance of the inner ring body 7 moving upward, when the sector-shaped drill tooth 2 is in a horizontal state, its upper surface contacts the bottom of the inner ring body 7. In this way, when the sector-shaped drill tooth 2 is in a horizontal state, it is limited by the inner wall surface of the drill tube 1 and the inner ring body 7 from both inside and outside, respectively, to ensure that the sector-shaped drill tooth 2 is stably maintained in a horizontal state.

[0037] A limiting groove 29 is provided on the outer side surface of the bottom of the outer ring body 6, and a limiting block 30 capable of being inserted into the limiting groove is provided at the bottom of the inner wall of the drill tube 1. When the outer ring body 6 is at the lowest position, the limiting block 30 is inserted into the limiting groove 29 to support the outer ring body 6.

[0038] The outer end of the top of the sector-shaped drill tooth 2 is located on the same circumferential plane as the inner wall surface of the drill tube 1 when the sector-shaped drill tooth 2 rotates to a horizontal state, and a telescopic rod 10 is arranged between the inner ring body 7 and the outer ring body 6, and the telescopic rod 10 is used to control the maximum rising distance of the inner ring body 7 on the outer ring body 6.

[0039] By setting the telescopic rod 10, when the inner ring body 7 moves upward on the outer ring body 6 to the maximum distance, the telescopic rod 10 is stretched to the longest state, thereby limiting the maximum stroke of the inner ring body 7 moving upward on the outer ring body 6. When the telescopic rod 10 is stretched to the longest state, the inner ring body 7 continues to move upward, and the outer ring body 6 will be pulled upward through the telescopic rod 10. At this time, the horizontal sector drill teeth 2 will move upward in the drill tube 1, and the sector drill teeth 2 will squeeze the sample soil upward, and finally the sample soil will be pressed into the sampling tube 3 to assist the piston body 5 in achieving the sample sampling operation.

[0040] The first driving structure also includes a first lifting control ring 11 and a first oil cylinder 12. The first lifting control ring 11 is rotatably sleeved on the top of the first upper connecting ring 9, and one side of the first lifting control ring 11 is connected to the first oil cylinder 12. The first lifting control ring 11 is controlled to rise and fall by the first oil cylinder 12, and the first lifting control ring 11 controls the rise and fall of the inner ring body 7 through the first upper connecting ring 9 and the first connecting rod 8.

[0041] Specifically, the first lifting control ring 11 can be driven to move up and down by the first oil cylinder 12. In the process of drilling, the first upper connecting ring 9 rotates synchronously with the drill tube 1.

[0042] The first inner bracket 19 is fixedly mounted on the inner surface of the second upper connecting ring 16, and the sampling tube 3 is threadedly connected to the center of the first inner bracket 19. In this way, on the one hand, the sampling tube 3 can be inserted into the soil along with the drill pipe 1 by utilizing the first inner bracket 19. On the other hand, the sampling tube 3 can be removed from the first inner bracket 19 by directly rotating the sampling tube 3.

[0043] The second driving structure includes a pressure rod 13, a push rod 14, a second connecting rod 15 and a second upper connecting ring 16. The pressure rod 13 and the push rod 14 are arranged on the upper and lower sides of the outer end of the fan-shaped partition 4. The second connecting rod 15 is installed inside the wall of the drill barrel 1. The pressure rod 13 and the push rod 14 are fixedly installed on the second connecting rod 15. The top end of the second connecting rod 15 passes through the drill barrel 1 and is fixed to the second upper connecting ring 16.

[0044] The second upper connecting ring 16 controls the lifting and lowering movement of the second connecting rod 15 by lifting and lowering, and the second connecting rod 15 drives the top rod 14 and the pressure rod 13 to rise and fall. Specifically, when the second connecting rod 15 moves upward, the top rod 14 will push up the outer end of the fan-shaped partition 4, so that the bottom end of the fan-shaped partition 4 rotates downward. In this state, it is the initial state of the fan-shaped partition 4, and the fan-shaped partition 4 is kept in a state with the bottom end tilted inward.

[0045] When the second connecting rod 15 moves downward, the pressing rod 13 presses down the outer end of the fan-shaped partition 4, so that the bottom end of the fan-shaped partition 4 rotates inward, so that the fan-shaped partition 4 is in a horizontal state.

[0046] The second driving structure also includes a second lifting control ring 17 and a second oil cylinder 18. The second lifting control ring 17 is rotatably sleeved on the outside of the second upper connecting ring 16, and one side of the second lifting control ring 17 is connected to the second oil cylinder 18. The lifting and lowering of the second lifting control ring 17 can be controlled by the second oil cylinder 18, and then the second lifting control ring 17 drives the second upper connecting ring 16 to perform lifting and lowering movements.

[0047] The fan-shaped partition 4 includes a fan-shaped plate body 4.1, a fan-shaped connecting part 4.2 and a block-shaped connecting part 4.3. The rotation center of the fan-shaped plate body 4.1 is the bottom of its outer end. The fan-shaped connecting part 4.2 is a fan-shaped structure with the rotation center of the fan-shaped plate body 4.1 as a circle. The fan-shaped connecting part 4.2 is fixedly mounted on the outer end of the fan-shaped plate body 4.1. The block-shaped connecting part 4.3 is fixedly mounted on the outer surface of the fan-shaped connecting part 4.2, and the block-shaped connecting part 4.3 is located between the pressure rod 13 and the top rod 14. When the second connecting rod 15 moves downward, the pressure rod 13 will press down the block-shaped connecting part 4.3, so that the fan-shaped partition 4 rotates as a whole to a horizontal state.

[0048] A receiving groove is provided inside the side wall of the drill tube 1, the fan-shaped connecting portion 4.2 is located in the receiving groove, and the push rod 14 and the pressure rod 13 are both located in the receiving groove. When the fan-shaped partition 4 is in the initial state, the fan-shaped connecting plate blocks the notch of the receiving groove to prevent the soil in the drill tube 1 from entering the receiving groove. When the fan-shaped partition 4 is in the horizontal state, the fan-shaped connecting plate enters the receiving groove, and the fan-shaped connecting plate keeps blocking the notch of the receiving groove.

[0049] A second inner bracket 20 is installed inside the first upper connecting ring 9, a piston rod 21 is installed at the top of the piston body 5, a circular plate 22 is arranged at the top of the piston rod 21, a through hole 23 with an inner diameter larger than the outer diameter of the sampling tube 3 is opened at the center of the second inner bracket 20, the outer diameter of the circular plate 22 is larger than the inner diameter of the through hole 23, and when the sector-shaped drill teeth 2 and the sector-shaped partition plate 4 are in a horizontal state, the lower surface of the circular plate 22 contacts the upper surface of the second inner bracket 20.

[0050] When the sector-shaped partition plate 4 rotates to a horizontal state, the second upper connecting ring 16 moves downward. At this time, the second upper connecting ring 16 drives the sampling tube 3 to move downward through the first inner bracket 19. When the sector-shaped drill teeth 2 rotate to a horizontal state, the second inner bracket 20 moves upward with the first upper connecting ring 9 and contacts the bottom of the circular plate 22. When the sector-shaped drill teeth 2 squeeze the soil sample upward into the sampling tube 3, the second inner bracket 20 pushes the circular plate 22 upward, so that the piston body 5 synchronously sucks the sample soil.

[0051] The outer rotating sleeve of the drill tube 1 is provided with a lifting seat 24, and a rotating motor 25 is installed on the lifting seat 24. The power end of the rotating motor 25 is connected to the drill tube 1 through a transmission belt 26. The lifting seat 24 can be lifted and lowered on the frame. The lifting seat 24 is threadedly connected with a lifting screw 27. One end of the lifting screw 27 is connected to a forward and reverse motor 28 for controlling the rotation of the lifting screw 27. The bottom end of the lifting screw 27 is rotatably installed on the frame.

[0052] The first oil cylinder 12 and the second oil cylinder 18 are both mounted on the lifting seat 24. The rotary motor 25 drives the drill tube 1 to rotate through the transmission belt 26, and cuts the soil with the fan-shaped drill teeth 2. The forward and reverse motor 28 drives the lifting screw to rotate forward and reverse through the male drive, driving the drill tube 1 to move up and down.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A soil detection sampling device, characterized in that: The drill tube (1) comprises a drill barrel (1), wherein a circle of fan-shaped drill teeth (2) are arranged at the bottom end of the drill barrel (1), wherein the fan-shaped drill teeth (2) are swung inward at the bottom end to a horizontal state to seal the bottom end of the drill barrel (1), and the fan-shaped drill teeth (2) are in an initial state with the bottom end facing vertically downward, wherein a detachable sampling tube (3) is arranged at the center of the drill barrel (1), and a circle of fan-shaped partitions (4) are arranged on the inner side wall of the drill barrel (1), wherein the fan-shaped partitions (4) are swung inward at the bottom end to be in close contact with the sampling tube (3) to seal the bottom end of the drill barrel (1). The inner cavity is divided, and the fan-shaped partition (4) is in an initial state with its bottom end tilted inwards, the upper and lower ends of the sampling tube (3) are open, a piston body (5) is arranged in the sampling tube (3), and the piston body (5) blocks the bottom opening of the sampling tube (3), and the inner wall of the drill tube (1) is provided with a first driving structure and a second driving structure that can be raised and lowered, the first driving structure can drive the fan-shaped drill teeth (2) to rotate, and the second driving structure can drive the fan-shaped partition (4) to rotate.

2. A soil detection sampling device as claimed in claim 1, characterized in that: The first driving structure comprises an outer ring body (6), an inner ring body (7), a first connecting rod (8) and a first upper connecting ring (9); the outer ring body (6) is movably mounted on the bottom of the inner wall of the drill barrel (1); the inner ring body (7) is movably sleeved on the inner surface of the outer ring body (6); the two ends of the first connecting rod (8) are respectively connected to the first upper connecting ring (9) and the inner ring body (7); and the first upper connecting ring (9) is located above the drill barrel (1); the inner surface of the fan-shaped drill tooth (2) contacts the outer side surface of the inner ring; and the outer side of the top end of the fan-shaped drill tooth (2) contacts the lower end surface of the drill barrel (1).

3. A soil detection sampling device as claimed in claim 2, characterized in that: The outer end of the top of the sector-shaped drill tooth (2) is located on the same circumferential surface as the inner wall surface of the drill tube (1) when the sector-shaped drill tooth (2) is rotated to a horizontal state. A telescopic rod (10) is provided between the inner ring body (7) and the outer ring body (6). The telescopic rod (10) is used to control the maximum rising distance of the inner ring body (7) on the outer ring body (6).

4. A soil detection sampling device as claimed in claim 2, characterized in that: The first driving structure also includes a first lifting control ring (11) and a first oil cylinder (12); the first lifting control ring (11) is rotatably sleeved on the top of the first upper connecting ring (9); one side of the first lifting control ring (11) is connected to the first oil cylinder (12).

5. A soil detection sampling device as claimed in claim 1, characterized in that: The second driving structure comprises a pressure rod (13), a push rod (14), a second connecting rod (15) and a second upper connecting ring (16); the pressure rod (13) and the push rod (14) are arranged on the upper and lower sides of the outer end of the fan-shaped partition (4); the second connecting rod (15) is installed inside the wall of the drill tube (1); the pressure rod (13) and the push rod (14) are both fixedly installed on the second connecting rod (15); the top end of the second connecting rod (15) passes through the drill tube (1) and is fixed to the second upper connecting ring (16).

6. A soil detection sampling device as claimed in claim 5, characterized in that: The fan-shaped partition (4) comprises a fan-shaped plate body (4.1), a fan-shaped connecting part (4.2) and a block-shaped connecting part (4.3), the rotation center of the fan-shaped plate body (4.1) is the bottom of its outer end, the fan-shaped connecting part (4.2) is a fan-shaped structure with the rotation center of the fan-shaped plate body (4.1) as a circle, and the fan-shaped connecting part (4.2) is fixedly installed on the outer end of the fan-shaped plate body (4.1), and the block-shaped connecting part (4.3) is fixedly installed on the outer surface of the fan-shaped connecting part (4.2), and the block-shaped connecting part (4.3) is located between the pressure rod (13) and the top rod (14).

7. A soil detection sampling device as claimed in claim 5, characterized in that: The second driving structure further comprises a second lifting control ring (17) and a second oil cylinder (18); the second lifting control ring (17) is rotatably sleeved on the outside of the second upper connecting ring (16); one side of the second lifting control ring (17) is connected to the second oil cylinder (18).

8. A soil detection sampling device as claimed in claim 5, characterized in that: A first inner bracket (19) is fixedly mounted on the inner surface of the second upper connecting ring (16), and the sampling tube (3) is threadedly connected to the center of the first inner bracket (19).

9. A soil detection sampling device as claimed in claim 8, characterized in that: A second inner bracket (20) is installed inside the first upper connecting ring (9), a piston rod (21) is installed at the top end of the piston body (5), a circular plate (22) is arranged at the top end of the piston rod (21), a through hole (23) with an inner diameter greater than the outer diameter of the sampling tube (3) is opened at the center of the second inner bracket (20), the outer diameter of the circular plate (22) is greater than the inner diameter of the through hole (23), and when the fan-shaped drill teeth (2) and the fan-shaped partition plate (4) are in a horizontal state, the lower surface of the circular plate (22) contacts the upper surface of the second inner bracket (20).

10. A soil detection sampling device as claimed in claim 1, characterized in that: The outer rotating sleeve of the drill tube (1) is provided with a lifting seat (24), a rotating motor (25) is installed on the lifting seat (24), a power end of the rotating motor (25) is connected to the drill tube (1) through a transmission belt (26), the lifting seat (24) is installed on the frame in a lifting manner, a lifting screw (27) is threadedly connected to the lifting seat (24), one end of the lifting screw (27) is connected to a forward and reverse motor (28) for controlling the rotation of the lifting screw (27), and the bottom end of the lifting screw (27) is rotatably installed on the frame.

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