A soil testing sampling device

Abstract

The application provides a soil detection sampling device and belongs to the technical field of environmental detection. The soil detection sampling device comprises a drill cylinder, a circle of fan-shaped drill teeth is arranged at the bottom end of the drill cylinder, the fan-shaped drill teeth are closed by being swung inward to a horizontal state at the bottom end, a detachable sampling tube is arranged at the center of the drill cylinder, a circle of fan-shaped partitions is arranged on the inner side wall of the drill cylinder, the fan-shaped partitions are separated by being swung inward to be close to the sampling tube, the fan-shaped partitions are in an initial state of being inclined inward at the bottom end, a piston body is arranged in the sampling tube, the piston body blocks the open bottom end of the sampling tube, the inner wall of the drill cylinder is provided with a first driving structure and a second driving structure which can be lifted, the first driving structure can drive the fan-shaped drill teeth to rotate, and the second driving structure can drive the fan-shaped partitions to rotate. The application has the advantages of high soil sampling purity, no need of backfilling and improved sample sampling operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of environmental testing technology, specifically to a soil testing and sampling device. Background Technology

[0002] To enable soil monitoring and real-time monitoring, soil samplers are one of the most frequently used tools in environmental monitoring. Soil samples are taken out using samplers, and then the soil samples are tested and analyzed to determine the various components contained in the soil, thereby judging the degree of soil pollution.

[0003] For example, patent application number 202310433398.7 provides a soil sampling and testing device, including a fixing frame, a drill pipe, a sampling tube, a transmission assembly, and a drive assembly. Under the action of the first drive unit, the drill pipe rotates and moves downwards, and the drill bit at the lower end of the drill pipe agitates the soil. When the drill pipe reaches a specified depth, under the action of the second drive unit, the sampling tube slides downwards relative to the drill pipe. During the downward sliding process, the lower end of the sampling tube can push the drill blocks away from each other, keeping the sampling tube clean before sampling, thereby improving the purity of the sample. During the downward sliding sampling process, under the action of the transmission assembly, the support sleeve that slides and seals on the outside of the sampling tube slides upwards, increasing the space inside the sampling tube and reducing the air pressure inside the sampling tube, preventing the soil sample entering the sampling tube from slipping out of the sampling tube, further improving the purity of the sample.

[0004] While the aforementioned prior art enables the sampling tube to be inserted downwards through the drill pipe after drilling to collect soil samples, thus improving the purity of the samples, in actual operation, a large amount of soil other than the sample is discharged during drilling. This necessitates backfilling the soil sample after sampling, affecting the efficiency of the sample collection process. Therefore, this application provides a soil testing and sampling device. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a soil testing and sampling device.

[0006] The technical solution of this invention is implemented as follows:

[0007] A soil testing and sampling device includes a drill cylinder with a ring of fan-shaped drill teeth at its bottom end. The fan-shaped drill teeth swing inward from their bottom ends to a horizontal position, sealing the bottom end of the drill cylinder. Initially, the fan-shaped drill teeth are vertically downward at their bottom ends. A detachable sampling tube is located at the center of the drill cylinder. A ring of fan-shaped baffles is located on the inner wall of the drill cylinder. The fan-shaped baffles swing inward from their bottom ends to a position close to the sampling tube, separating the inner cavity of the drill cylinder. Initially, the fan-shaped baffles are inclined inward at their bottom ends. The upper and lower ends of the sampling tube are open. A piston body is located inside the sampling tube, sealing the open bottom end of the sampling tube. The inner wall of the drill cylinder is equipped with a first driving structure and a second driving structure capable of lifting and lowering. The first driving structure can drive the fan-shaped drill teeth to rotate, and the second driving structure can drive the fan-shaped baffles to rotate.

[0008] Furthermore, the first drive structure includes an outer ring body, an inner ring body, a first connecting rod, and a first upper connecting ring. The outer ring body is vertically mounted on the bottom of the inner wall of the drill barrel, and the inner ring body is vertically fitted onto 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 surface of the inner ring, and the outer side of the tip of the fan-shaped drill tooth contacts the lower end face of the drill barrel.

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

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

[0011] Furthermore, the second drive 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 vertically on the upper and lower sides of the outer end of the fan-shaped partition. The second connecting rod is installed inside the cylinder wall of the drill barrel. The pressure rod and the push rod are both fixedly installed on the second connecting rod. 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 sector-shaped partition includes a sector-shaped plate body, a sector-shaped connecting part, and a block-shaped connecting part. The rotation center of the sector-shaped plate body is the bottom of its outer end. The sector-shaped connecting part is a sector-shaped structure with the rotation center of the sector-shaped plate body as a circle. The sector-shaped connecting part is fixedly installed on the outer end of the sector-shaped plate body. The block-shaped connecting part is fixedly installed on the outer surface of the sector-shaped connecting part and is located between the pressure rod and the top rod.

[0013] Furthermore, the second drive structure also includes a second lifting control ring and a second hydraulic 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 hydraulic cylinder.

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

[0015] Furthermore, a second inner support is installed inside the first upper connecting ring, a piston rod is installed at the top of the piston body, a circular plate is provided at 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 support, 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 is in contact with the upper surface of the second inner support.

[0016] Furthermore, a lifting seat is rotatably fitted on the outside of the drill barrel, and a rotary motor is installed on the lifting seat. The power end of the rotary motor is connected to the drill barrel via a transmission belt. The lifting seat is rotatably mounted on the frame. A lifting screw is threadedly connected to the lifting seat. One end of the lifting screw is connected to a forward and reverse motor that controls the rotation of the lifting screw. The bottom end of the lifting screw is rotatably mounted on the frame.

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

[0018] 1. By setting up fan-shaped drill teeth and fan-shaped baffles, after the drill tube penetrates the soil to the preset sampling depth, the fan-shaped baffles rotate inward at the bottom and work with the sampling tube to divide the inner cavity of the drill tube. The fan-shaped drill teeth rotate inward at the bottom to close the bottom of the drill tube. This separates the soil sample to be sampled between the fan-shaped baffles and the fan-shaped drill teeth. Then, the fan-shaped drill teeth continue to move upward and work with the piston body to move upward. The fan-shaped drill teeth press the soil sample from the bottom of the sampling tube into the sampling tube. Through the suction action of the piston body, not only can the amount of sample collected be increased, but the sample can also be easily put into the sampling tube, improving the purity of the sample collection and making it more convenient to collect soil samples.

[0019] 2. By setting up sampling tubes to sample inside the drill barrel, and during the drilling process, all the soil is retained inside the drill barrel. Therefore, after the sample is collected, when the drill barrel is extracted, all the soil remains in place, preventing soil loss and eliminating the need for secondary soil backfilling, making soil sample collection more convenient. Attached Figure Description

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

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

[0022] Figure 3 This is the present invention. Figure 1 A partial sectional view in the document;

[0023] Figure 4 This is the present invention. Figure 3 Enlarged view at point B in the middle;

[0024] Figure 5 This is a schematic diagram of the pressure rod, push rod, and second connecting rod of the present invention inside the drill barrel;

[0025] Figure 6 This is the present invention. Figure 5 Enlarged view at point C;

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

[0027] In the diagram: 1. Drill barrel; 2. Sector-shaped drill teeth; 3. Sampling tube; 4. Sector-shaped partition; 4.1. Sector-shaped plate body; 4.2. Sector-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 hydraulic cylinder; 13. Pressure rod; 14. Push rod; 15. Second connecting rod; 16. Second upper connecting ring; 17. Second lifting control ring; 18. Second hydraulic cylinder; 19. First inner support; 20. Second inner support; 21. Piston rod; 22. Circular plate; 23. Through hole; 24. Lifting seat; 25. Rotary motor; 26. Transmission belt; 27. Lifting screw; 28. Forward and reverse motor; 29. ​​Limiting groove; 30. Limiting block. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, this embodiment provides a soil testing and sampling device, including a drill cylinder 1. A ring of fan-shaped drill teeth 2 is provided at the bottom end of the drill cylinder 1. The fan-shaped drill teeth 2 swing inward from the bottom end to a horizontal state to close the bottom end of the drill cylinder 1. In the initial state, the fan-shaped drill teeth 2 are vertically downward at the bottom end. A detachable sampling tube 3 is provided at the center of the drill cylinder 1. A ring of fan-shaped baffles 4 is provided on the inner side wall of the drill cylinder 1. The fan-shaped baffles 4 swing inward from the bottom end to a position close to the sampling tube 3 to divide the inner cavity of the drill cylinder 1. In the initial state, the fan-shaped baffles 4 are inclined inward at the bottom end. The upper and lower ends of the sampling tube 3 are open. A piston body 5 is provided inside the sampling tube 3. The piston body 5 seals the open bottom end of the sampling tube 3. The inner wall of the drill cylinder 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 baffles 4 to rotate.

[0030] During the drilling process of the drill barrel 1, the sampling tube 3 is inserted into the soil along with the drill barrel 1. The fan-shaped baffle 4 can break up the soil below the sampling tube 3 to reduce the resistance of the soil to the sampling tube 3, making it easier for the sampling tube 3 to be inserted into the soil.

[0031] When collecting soil samples, the first driving structure causes the fan-shaped drill teeth 2 to seal the bottom of the drill cylinder 1, and the second driving structure causes the fan-shaped baffle 4 to divide the inner cavity of the drill cylinder 1, so that the collected soil sample is located between the fan-shaped baffle 4 and the fan-shaped drill teeth 2 and is separated from the rest of the soil in the drill cylinder 1. Then, the piston body 5 is used to draw the soil into the sampling tube 3 to complete the soil sample collection operation.

[0032] During the sampling process, all soil remains inside drill cylinder 1. After sampling is complete, sampling tube 3 is directly extracted, and then drill cylinder 1 is pulled out of the soil. At this point, all the soil remains in its original position and is not carried away from the ground. In particular, the fan-shaped baffle 4, as it rotates with drill cylinder 1, can break up the soil in contact with the inner wall of drill cylinder 1, thereby reducing the adhesion between the soil and the inner wall of drill cylinder 1. Therefore, after soil sampling is completed, there is no need for soil backfilling.

[0033] The first drive 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 vertically mounted on the bottom of the inner wall of the drill barrel 1. The inner ring body 7 is vertically fitted onto 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 surface of the inner ring, and the outer side of the top of the fan-shaped drill tooth 2 contacts the lower end face of the drill barrel 1.

[0034] In the initial state, the fan-shaped drill bit 2 is limited by the drill barrel 1, preventing its bottom end from rotating outward. At the same time, the inner surface of the fan-shaped drill bit 2 is in contact with the inner ring body 7, which prevents the fan-shaped drill bit 2 from rotating inward. Thus, by utilizing the cooperation between the inner ring body 7 and the drill barrel 1, the fan-shaped drill bit 2 can maintain a vertically downward position during drilling operations, ensuring that it has good drilling performance.

[0035] The inner ring 7 moves upward away from the inner surface of the fan-shaped drill tooth 2. At this time, when the outer ring 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 contacts the inner wall surface of the drill barrel 1 in this state. At this time, the drill barrel 1 can keep the fan-shaped drill tooth 2 in a horizontal state.

[0036] Specifically, by setting the upward displacement distance of the inner ring body 7, when the fan-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 fan-shaped drill tooth 2 is in a horizontal state, it is limited by the inner wall surface of the drill barrel 1 and the inner ring body 7 from both the inner and outer sides, so as to ensure that the fan-shaped drill tooth 2 is stably kept in a horizontal state.

[0037] A limiting groove 29 is provided on the outer side of the bottom of the outer ring body 6. A limiting block 30 that can be inserted into the limiting groove is provided at the bottom of the inner wall of the drill barrel 1. When the outer ring body 6 is in the lowest position, the limiting block 30 is inserted into the limiting groove 29 to support the outer ring body 6.

[0038] When the fan-shaped drill tooth 2 rotates to a horizontal position, the outer end of the top is located on the same circumferential surface as the inner wall of the drill barrel 1. 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 upward distance of the inner ring body 7 within the outer ring body 6.

[0039] By setting the telescopic rod 10, when the inner ring 7 moves upward a maximum distance on the outer ring 6, the telescopic rod 10 is stretched to its longest state, thereby limiting the maximum upward stroke of the inner ring 7 on the outer ring 6. When the telescopic rod 10 is stretched to its longest state, the inner ring 7 continues to move upward, pulling the outer ring 6 upward through the telescopic rod 10. At this time, the horizontally positioned fan-shaped drill teeth 2 move upward within the drill cylinder 1, squeezing the sample soil upward, ultimately forcing the sample soil into the sampling tube 3 to assist the piston body 5 in achieving the sample sampling operation.

[0040] The first drive structure also includes a first lifting control ring 11 and a first hydraulic 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 hydraulic cylinder 12. The first hydraulic cylinder 12 controls the lifting and lowering of the first lifting control ring 11, which in turn controls the lifting and lowering of the inner ring body 7 through the first upper connecting ring 9 and the first connecting rod 8.

[0041] Specifically, the first hydraulic cylinder 12 can drive the first lifting control ring 11 to move up and down. During the drilling process, the first upper connecting ring 9 rotates synchronously with the drill barrel 1.

[0042] The inner surface of the second upper connecting ring 16 is fixedly fitted with a first inner support 19, and the sampling tube 3 is threadedly connected to the center of the first inner support 19. This arrangement allows the sampling tube 3 to be inserted into the soil along with the drill barrel 1 using the first inner support 19. On the other hand, the sampling tube 3 can be removed from the first inner support 19 by simply rotating it.

[0043] The second drive 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 vertically 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 cylinder wall of the drill barrel 1. Both 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 through lifting and lowering. The second connecting rod 15 drives the top rod 14 and the pressure rod 13 to lift and lower. Specifically, when the second connecting rod 15 moves upward, the top rod 14 pushes the outer end of the fan-shaped partition 4, causing the bottom end of the fan-shaped partition 4 to rotate downward. This state is the initial state of the fan-shaped partition 4, keeping the fan-shaped partition 4 in a state where the bottom end is tilted inward.

[0045] When the second connecting rod 15 moves downward, the pressure rod 13 will press down on the outer end of the sector-shaped partition 4, causing the bottom end of the sector-shaped partition 4 to rotate inward, so that the sector-shaped partition 4 is in a horizontal state.

[0046] The second drive structure also includes a second lifting control ring 17 and a second hydraulic 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 hydraulic cylinder 18. The second hydraulic cylinder 18 can control the lifting and lowering of the second lifting control ring 17, thereby using the second lifting control ring 17 to drive the second upper connecting ring 16 to perform lifting and lowering movements.

[0047] The sector-shaped partition 4 includes a sector-shaped plate body 4.1, a sector-shaped connecting part 4.2, and a block-shaped connecting part 4.3. The rotation center of the sector-shaped plate body 4.1 is the bottom of its outer end. The sector-shaped connecting part 4.2 is a sector-shaped structure with the rotation center of the sector-shaped plate body 4.1 as a circle, and the sector-shaped connecting part 4.2 is fixedly installed on the outer end of the sector-shaped plate body 4.1. The block-shaped connecting part 4.3 is fixedly installed on the outer surface of the sector-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 on the block-shaped connecting part 4.3, causing the sector-shaped partition 4 to rotate to a horizontal state.

[0048] The drill barrel 1 has a receiving groove inside its side wall. The fan-shaped connecting part 4.2 is located inside the receiving groove, as are the top rod 14 and the pressure rod 13. When the fan-shaped partition 4 is in its initial state, the fan-shaped connecting plate seals the opening of the receiving groove, preventing soil from entering the receiving groove from the drill barrel 1. When the fan-shaped partition 4 is in a horizontal state, the fan-shaped connecting plate enters the receiving groove and remains in a state of sealing the opening of the receiving groove.

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

[0050] During the rotation of the sector-shaped partition 4 to a horizontal position, the second upper connecting ring 16 moves downwards. At this time, the second upper connecting ring 16 drives the sampling tube 3 downwards via the first inner support 19. During the rotation of the sector-shaped drill teeth 2 to a horizontal position, the second inner support 20 moves upwards along with the first upper connecting ring 9 and contacts the bottom of the circular plate 22. While the sector-shaped drill teeth 2 pushes the soil sample upwards into the sampling tube 3, the second inner support 20, through the upper circular plate 22, causes the piston body 5 to synchronously draw in the soil sample.

[0051] The drill barrel 1 is externally fitted with a lifting seat 24, on which a rotary motor 25 is mounted. The power end of the rotary motor 25 is connected to the drill barrel 1 via a transmission belt 26. The lifting seat 24 is mounted on the frame in a height-adjustable manner. The lifting seat 24 is threadedly connected to a lifting screw 27. One end of the lifting screw 27 is connected to a forward and reverse motor 28 that controls the rotation of the lifting screw 27. The bottom end of the lifting screw 27 is rotatably mounted on the frame.

[0052] Both the first hydraulic cylinder 12 and the second hydraulic cylinder 18 are mounted on the lifting base 24. The rotary motor 25 drives the drill barrel 1 to rotate via the transmission belt 26, using the fan-shaped drill teeth 2 to cut the soil. The forward and reverse motor 28 drives the lifting screw to rotate forward and reverse, driving the drill barrel 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A soil testing and sampling device, characterized in that, The system includes a drill barrel (1), with a ring of fan-shaped drill teeth (2) at the bottom end. The fan-shaped drill teeth (2) swing inward from the bottom end to a horizontal position to close the bottom end of the drill barrel (1). Initially, the fan-shaped drill teeth (2) are vertically downward at the bottom end. A detachable sampling tube (3) is provided at the center of the drill barrel (1). A ring of fan-shaped baffles (4) is provided on the inner wall of the drill barrel (1). The fan-shaped baffles (4) swing inward from the bottom end to closely adhere to the sampling tube (3) to close the bottom end of the drill barrel (1). The inner cavity is divided, and the fan-shaped partition (4) is initially inclined inward at the bottom. The upper and lower ends of the sampling tube (3) are open. A piston body (5) is provided inside the sampling tube (3). The piston body (5) seals the open bottom end of the sampling tube (3). 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. 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 vertically mounted on the bottom of the inner side wall of the drill barrel (1). The inner ring body (7) is vertically 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). The first upper connecting ring (9) is located above the drill barrel (1). The inner surface of the fan-shaped drill tooth (2) is in contact with the outer side of the inner ring. The outer side of the top of the fan-shaped drill tooth (2) is in contact with the lower end face of the drill barrel (1). The first drive 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 end 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 second drive structure includes a pressure rod (13), a top rod (14), a second connecting rod (15), and a second upper connecting ring (16). The pressure rod (13) and the top rod (14) are arranged vertically on the upper and lower sides of the outer side of the fan-shaped partition (4). The second connecting rod (15) is installed inside the cylinder wall of the drill barrel (1). The pressure rod (13) and the top 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 barrel (1) and is fixed to the second upper connecting ring (16). The second drive 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).

2. The soil testing and sampling device as described in claim 1, characterized in that, When the fan-shaped drill tooth (2) rotates to a horizontal state, the outer end of the top is located on the same circumferential surface as the inner wall of the drill barrel (1). 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 upward distance of the inner ring body (7) within the outer ring body (6).

3. The soil testing and sampling device as described in claim 1, characterized in that, The sector-shaped partition (4) includes a sector-shaped plate body (4.1), a sector-shaped connecting part (4.2), and a block-shaped connecting part (4.3). The rotation center of the sector-shaped plate body (4.1) is the bottom of its outer end. The sector-shaped connecting part (4.2) is a sector-shaped structure with the rotation center of the sector-shaped plate body (4.1) as a circle. The sector-shaped connecting part (4.2) is fixedly installed on the outer end of the sector-shaped plate body (4.1). The block-shaped connecting part (4.3) is fixedly installed on the outer surface of the sector-shaped connecting part (4.2). The block-shaped connecting part (4.3) is located between the pressure rod (13) and the top rod (14).

4. The soil testing and sampling device as described in claim 1, characterized in that, The inner surface of the second upper connecting ring (16) is fixedly mounted with a first inner bracket (19), and the sampling tube (3) is threadedly connected to the center of the first inner bracket (19).

5. The soil testing and sampling device as described in claim 4, characterized in that, The first upper connecting ring (9) is equipped with a second inner support (20), the piston body (5) is equipped with a piston rod (21) at the top, the piston rod (21) is provided with a circular plate (22) at the top, the second inner support (20) is provided with a through hole (23) with an inner diameter larger than the outer diameter of the sampling tube (3) at the center, the outer diameter of the circular plate (22) is larger than the inner diameter of the through hole (23), and when the fan-shaped drill teeth (2) and the fan-shaped partition (4) are in a horizontal state, the lower surface of the circular plate (22) is in contact with the upper surface of the second inner support (20).

6. The soil testing and sampling device as described in claim 1, characterized in that, The drill barrel (1) is externally fitted with a lifting seat (24), and a rotary motor (25) is installed on the lifting seat (24). The power end of the rotary motor (25) is connected to the drill barrel (1) via a transmission belt (26). The lifting seat (24) is mounted on the frame in a height-adjustable manner. The lifting seat (24) is threadedly connected to a lifting screw (27). One end of the lifting screw (27) is connected to a forward and reverse motor (28) that controls the rotation of the lifting screw (27). The bottom end of the lifting screw (27) is rotatably mounted on the frame.

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