Soil detection sampling device

Abstract

The invention belongs to the technical field of soil sampling devices, and particularly relates to a soil detection sampling device. Comprising a main rod, and the lower side of the main rod is fixedly connected with connecting pieces which are evenly distributed in the circumferential direction; the sampling barrel is arranged below the main rod, inclined grooves which are uniformly distributed in the circumferential direction are formed in the sampling barrel, and the inclined grooves are in extrusion fit with the adjacent connecting pieces; the operating handle is arranged on the upper side of the main rod, the operating handle is provided with a first sliding groove, the first sliding groove is connected with a first limiting piece in a sliding mode, and a spring is arranged between the first limiting piece and the operating handle. The operation handle and the main rod are limited through the first limiting piece, rapid connection between the operation handle and the main rod is achieved, rapid connection between the connecting piece and the sampling barrel is achieved by sliding the connecting piece into the inclined groove of the sampling barrel, and therefore the assembling speed of the device in the using process is increased, and the soil sampling efficiency is improved.

Description

Technical Field

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

[0002] Oilfield land improvement and greening is an important environmental protection measure, which aims to restore the land damaged by oil extraction activities, improve the ecological environment, and enhance the productivity and aesthetics of the land. Before determining the land improvement plan, it is necessary to use a soil testing and sampling device to sample the land to determine the various parameters of the land, so as to formulate a suitable improvement plan. The soil testing and sampling device is a tool used to collect soil samples from the surface or underground for laboratory analysis or field testing. The design of these devices can be very simple or quite complex, depending on factors such as the required sample type, depth, and soil properties. Common soil sampling devices include: hand shovels, soil drills, spiral drills, heavy hammer samplers, multi-tube samplers, and automatic sampling robots. Among them, the soil drill is a tool that can extract continuous soil columnar samples from deep in the soil. Depending on the design, there are two types: manual and electric.

[0003] Most of the existing manual soil drills are of detachable type to facilitate carrying, but the connection method of the existing soil drills is mostly threaded connection. The threaded connection takes a long time to splice and disassemble the soil drill, affecting the efficiency of soil sampling. Moreover, when in use, the rotation of the soil drill needs to be consistent with the direction of tightening the thread, otherwise it will cause the soil drill connection to loosen, affecting the sampling efficiency. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a soil detection sampling device.

[0005] The technical solution is: a soil detection sampling device, including: A main rod, the lower side of which is fixedly connected with connecting pieces evenly distributed in the circumferential direction; A sampling cylinder is arranged below the main rod, and the sampling cylinder is provided with circumferentially uniformly distributed oblique grooves, which are extruded and matched with the adjacent connecting piece, and the main rod and the sampling cylinder are quickly connected by the connecting piece sliding into the adjacent oblique groove; An operating handle is arranged on the upper side of the main rod, and the operating handle is provided with a first sliding groove, and the first sliding groove is slidably connected with a first limiting piece, a spring is arranged between the first limiting piece and the operating handle, and the main rod is provided with a limiting groove that cooperates with the first limiting piece to limit the main rod, and the quick connection between the main rod and the operating handle is achieved through the limitation between the first limiting piece and the adjacent limiting groove.

[0006] As a further preferred solution, a threaded protrusion is provided on the outer side of the sampling tube to assist the sampling tube in inserting into the soil for sampling.

[0007] As a further preferred solution, the operating handle is provided with a second slide groove, the second slide groove is slidably connected with a sliding member, the first slide groove and the second slide groove are communicated and both are filled with liquid.

[0008] As a further preferred solution, the connecting member is provided with a third slide groove, the third slide groove is slidably connected with a locking member, the sampling tube is provided with grooves evenly distributed in the circumferential direction, and the locking member is limitedly matched with adjacent grooves.

[0009] As a further preferred solution, it also includes: A slide bar, the slide bar is arranged in the main bar; A plurality of scraping knives are evenly distributed in the circumferential direction, and the plurality of scraping knives are fixedly connected to the lower side of the sliding rod; The cleaning piece is fixedly connected to the lower side of the slide rod, the scrapers evenly distributed circumferentially are squeezed and matched with the cleaning piece, the cleaning piece is slidably matched with the inner wall of the sampling tube, and the movement of the soil is controlled by the deformation of the cleaning piece.

[0010] As a further preferred solution, it also includes: An operating member, disposed on the upper side of the slide bar; The second limiting member is slidably connected to the operating member, a spring is arranged between the second limiting member and the operating member, the slide bar is provided with a slot, the second limiting member is limitedly matched with the slot, and the second limiting member is extrusion-matched with the slide bar.

[0011] As a further preferred solution, the second limiting member is provided with inclined surfaces which are symmetrically distributed up and down.

[0012] As a further preferred solution, it also includes: Sliding plates, the number of which is consistent with the number of the connecting members, the main rod is provided with fourth sliding grooves evenly distributed in the circumference, the sliding plates are slidably connected in the adjacent fourth sliding grooves, the fourth sliding grooves are connected with the adjacent third sliding grooves and both are filled with liquid; Sliding plates, the number of which is consistent with the number of the sliding discs, the sliding plates are slidably connected to the main rod, and springs and thin ropes are arranged between the sliding plates and the adjacent sliding discs.

[0013] As a further preferred solution, the main rod is slidably connected with limit columns evenly distributed circumferentially, a spring is arranged between the limit columns and the main rod, the limit columns are limitedly matched with the adjacent sliding plates, and the sliding plate is provided with a positioning groove that is limitedly matched with the adjacent limit columns.

[0014] As a further preferred solution, the sliding rod is fixedly connected with an extrusion ring, the sliding plates uniformly distributed circumferentially are all extrusion-matched with the extrusion ring, and the sliding plates are made of elastic material.

[0015] The present invention has the following advantages: the present invention limits the operating handle and the main rod by the first limiting member, thereby realizing a quick connection between the operating handle and the main rod; the connecting member slides into the inclined groove of the sampling tube, thereby realizing a quick connection between the connecting member and the sampling tube, thereby accelerating the assembly speed of the device when in use and improving the soil sampling efficiency.

[0016] The soil in the sampling tube is broken up by the scraper, thereby speeding up the cleaning of the soil in the sampling tube, and the residual soil on the inner wall of the sampling tube is scraped off by the cleaning piece, thereby improving the cleanliness of the soil cleaning in the sampling tube and preventing the sampling tube from being affected by the previous sampling when sampling the soil at the next position.

[0017] After the cleaning member has finished cleaning the sampling tube, the sliding plate drives the adjacent locking member to release the limit on the sampling tube, thereby reducing the time used to separate the sampling tube from the connecting member, and further improving the efficiency of soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the sampling tube of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the main rod and the operating handle of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first limiting member and the sliding member of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the connecting member and the locking member of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the main rod, the operating handle and the sliding rod of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding rod, the operating member and the second limiting member of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the main rod and the sliding rod of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the limiting column and the extrusion ring of the present invention.

[0019] Among them: 1-main rod, 101-fourth slide groove, 2-connecting piece, 201-third slide groove, 3-sampling tube, 4-operating handle, 401-first slide groove, 402-second slide groove, 5-first limiting piece, 6-sliding piece, 7-locking piece, 8-sliding rod, 9-scraper, 10-cleaning piece, 11-operating piece, 12-second limiting piece, 13-sliding disk, 14-sliding plate, 15-limiting column, 16-extrusion ring. DETAILED DESCRIPTION

[0020] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as upper and lower mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the components in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words "connection" in this application include direct and indirect connections unless otherwise specified.

[0021] A soil testing sampling device, such as Figure 1-9 As shown, it includes a main rod 1, and a plurality of (three are taken as an example in the figure) circumferentially uniformly distributed connecting members 2 are fixedly connected to the lower side of the main rod 1, and the connecting member 2 is composed of a connecting rod and a convex column, and the convex column is used to connect the connecting member 2 and the sampling tube 3; the sampling tube 3, the lower side of the sampling tube 3 is thin and the upper side is thick, and the lower side of the sampling tube 3 is provided with a notch, which is used to reduce the resistance when the sampling tube 3 is inserted into the soil, and the sampling tube 3 is arranged below the main rod 1, and a plurality of (three are taken as an example in the figure) circumferentially uniformly distributed inclined grooves are provided on the upper side of the sampling tube 3, and the inclined grooves are squeezed and matched with adjacent connecting members 2, and the main rod 1 and the sampling tube 3 are quickly connected by sliding the connecting member 2 into the adjacent inclined grooves. When in use, the main rod 1 is rotated counterclockwise from the top view, and the main rod 1 drives the three connecting members 2 to rotate. The convex column part of the connecting member 2 cannot continue to rotate relative to the sampling tube 3 due to being blocked by the adjacent inclined grooves on the sampling tube 3, thereby driving the sampling tube 3 to rotate; an operating handle 4 is set On the upper side of the main rod 1, the operating handle 4 is in a straight line shape as a whole. The lever principle is used to reduce the force required for rotating the main rod 1. The operating handle 4 is provided with a first sliding groove 401. As shown in the figure, two first sliding grooves 401 are symmetrically distributed, so that the force on the main rod 1 when the operating handle 4 is rotated is more uniform. The first sliding groove 401 is slidably connected with a first limiting member 5. The first limiting member 5 is composed of a round rod and a limiting block. The round rod portion of the first limiting member 5 is used to cooperate with the adjacent first sliding groove 401 to form a seal. A spring is provided between the first limiting member 5 and the operating handle 4. The spring is used to push the adjacent first limiting member 5 so that the first limiting member 5 is inserted into the adjacent limiting groove on the main rod 1. The main rod 1 is provided with a limiting groove that cooperates with the first limiting member 5. The quick connection between the main rod 1 and the operating handle 4 is realized by the limiting between the first limiting member 5 and the adjacent limiting groove. When the operating handle 4 is rotated, the main rod 1 is pushed to rotate by the two first limiting members 5.

[0022] A threaded protrusion is provided on the outer side of the sampling tube 3 to assist the sampling tube 3 in inserting into the soil for sampling. When the sampling tube 3 rotates counterclockwise from the top view, the threaded protrusion on the sampling tube 3 is inserted into the soil, and the upper side of the threaded protrusion on the sampling tube 3 is subjected to the downward force of the soil, thereby assisting the sampling tube 3 in inserting into the soil.

[0023] The operating handle 4 is provided with a second slide groove 402, and the second slide groove 402 is slidably connected with a sliding member 6. The sliding member 6 is composed of a round rod and a disc. The first slide groove 401 and the second slide groove 402 are connected and both are filled with liquid. The liquid mentioned here and below is hydraulic oil for transmission. The second slide groove 402 is located on the upper side of the disc part of the sliding member 6 and is filled with liquid. When the sliding member 6 moves downward, a negative pressure is formed on the upper side of the second slide groove 402, and the liquid in the two first slide grooves 401 is drawn into the second slide groove 402, thereby transmitting the two first limit members 5 to separate from the two limit grooves on the main rod 1, so as to realize the quick disassembly between the operating handle 4 and the main rod 1.

[0024] A third slide groove 201 is provided on the inner side of the convex column part of the connecting member 2, and a locking member 7 is slidably connected to the third slide groove 201. The sampling tube 3 is provided with a plurality of grooves (three are taken as an example in the figure) evenly distributed in the circumferential direction. The locking member 7 is limitedly matched with adjacent grooves. When the connecting member 2 rotates, no matter from which direction it rotates, the connecting member 2 and the sampling tube 3 will not be separated.

[0025] When using the device, first combine the main rod 1, the sampling tube 3 and the operating handle 4, then align the sampling tube 3 with the soil at the sampling location, press down the operating handle 4 and turn it to insert the sampling tube 3 into the soil for sampling. When the sampling tube 3 is filled with soil, the sampling tube 3 is lifted up by the operating handle 4, and then the soil in the sampling tube 3 is put into the storage box. After the sampling is completed, the main rod 1, the sampling tube 3 and the operating handle 4 are disassembled and put into the tool kit.

[0026] The main rod 1 also includes: a slide bar 8, which is used to drive a scraper 9 and a cleaning piece 10 to take out the soil in the sampling tube 3. The slide bar 8 is arranged in the main rod 1; a scraper 9, which has a plurality of scrapers 9 evenly distributed in the circumferential direction, and is used to crush the soil in the sampling tube 3 so as to take out the soil in the sampling tube 3. The plurality of scrapers 9 are fixedly connected to the lower side of the slide bar 8; a cleaning piece 10, which is made of elastic material. When the scraper 9 rotates clockwise from the top view and moves downward, the scraper 9 scrapes the soil. At this time, the cleaning piece 10 moves downward synchronously, and the cleaning piece 10 is squeezed by the soil and deformed, and the edge of the cleaning piece 10 moves upward. The sliding rod 8 is tilted to allow the soil to pass through. When the soil in the sampling tube 3 is crushed, the sliding rod 8 is pulled upward, and the sliding rod 8 drives the scraper 9 and the cleaning piece 10 to move upward. At this time, the cleaning piece 10 is supported by a number of scrapers 9. The edge of the cleaning piece 10 will not bend downward to allow the soil to pass through, so that the cleaning piece 10 can scrape off the soil remaining on the inner wall of the sampling tube 3 to avoid the soil attached to the inner wall of the sampling tube 3 affecting the next sampling. The cleaning piece 10 is fixed to the lower side of the sliding rod 8, and the scrapers 9 evenly distributed circumferentially are all squeezed and matched with the cleaning piece 10. The cleaning piece 10 slides with the inner wall of the sampling tube 3 to control the movement of the soil through the deformation of the cleaning piece 10.

[0027] After the sampling tube 3 is filled with soil, the sampling tube 3 is lifted up, and then the sampling tube 3 is aligned with the storage box, and then the slide bar 8 is pushed downward. The slide bar 8 drives the scraper 9 to move downward, thereby pushing the soil in the sampling tube 3 into the storage box. If the soil is too compact and difficult to push, the slide bar 8 is rotated so that the scraper 9 scrapes the soil into pieces. When all the soil in the sampling tube 3 is scraped into pieces, the soil in the sampling tube 3 moves to the upper side of the cleaning piece 10, and then the upper side of the sampling tube 3 is aligned with the upper side of the storage box, and then the slide bar 8 is moved upward. The slide bar 8 drives the cleaning piece 10 to scrape off the soil remaining on the inner wall of the sampling tube 3. At the same time, the cleaning piece 10 pushes the scraped soil in the sampling tube 3 to move, so that the soil in the sampling tube 3 is poured into the storage box from the upper side.

[0028] It also includes: an operating member 11, which is used to assist in rotating the slide bar 8 and is arranged on the upper side of the slide bar 8; a second limiting member 12, two of which are taken as an example in the figure, which is slidably connected to the operating member 11, and a spring is arranged between the second limiting member 12 and the operating member 11, and the spring is used to allow adjacent second limiting members 12 to be inserted into adjacent slots on the slide bar 8, and the slide bar 8 is provided with a slot, and the second limiting member 12 is limitedly matched with the slot, and the second limiting member 12 is squeezed and matched with the slide bar 8. When the operating member 11 rotates, the slide bar 8 is driven to rotate through the two second limiting members 12.

[0029] The second limit member 12 is provided with inclined surfaces symmetrically distributed up and down, which are used to quickly connect the operating member 11 with the slide bar 8. When the operating member 11 is installed, the operating member 11 is moved downward, and the operating member 11 drives the two second limit members 12 to move. When the two second limit members 12 contact the slide bar 8, the second limit members 12 are squeezed and moved. When the second limit member 12 is aligned with the adjacent slots, the second limit member 12 is inserted into the adjacent slots under the action of adjacent springs. When the operating member 11 is removed, the operating member 11 is moved upward, and the operating member 11 drives the two second limit members 12 to move. The second limit member 12 is squeezed and moved by the adjacent slots. The second limit member 12 compresses the adjacent springs. When the operating member 11 is separated from the slide bar 8, the second limit member 12 is reset under the action of the adjacent springs.

[0030] When the scraper 9 is needed to crush the soil, the operating member 11 is rotated, and the operating member 11 drives the slide bar 8 to rotate through the two second limit members 12, thereby reducing the force required to rotate the slide bar 8 through the lever principle, and the slide bar 8 drives the scraper 9 to rotate.

[0031] The main rod 1 is provided with fourth slide grooves 101 evenly distributed in the circumference, and the sliding disc 13 is slidably connected to the adjacent fourth slide grooves 101. When the sliding disc 13 moves downward, the liquid in the adjacent fourth slide groove 101 is pressed into the adjacent third slide groove 201, thereby pushing the adjacent locking member 7 to insert into the adjacent groove on the sampling tube 3. The fourth slide groove 101 is connected with the adjacent third slide groove 201 and both are filled with liquid. The fourth slide groove 101 is connected with the adjacent third slide groove 201 through a hose. The hose can be set on the outside of the main rod 1 and the adjacent connecting member 2, and can also pass through the main rod 1 and the adjacent connecting member 2; sliding plates 14, the number of sliding plates 14 is the same as that of sliding plates The number of disks 13 is consistent, and the sliding plate 14 is slidably connected to the main rod 1. A spring and a thin rope are arranged between the sliding plate 14 and the adjacent sliding disk 13. When the sliding plate 14 moves upward, the adjacent sliding disk 13 is pulled by the adjacent thin rope, thereby transmitting the locking member 7 to separate from the adjacent groove on the adjacent sampling tube 3. When the connecting member 2 and the sampling tube 3 are connected, the locking member 7 is squeezed by the upper side of the adjacent inclined groove, and the locking member 7 moves and presses the liquid in the adjacent third slide groove 201 into the adjacent fourth slide groove 101. The liquid in the fourth slide groove 101 increases, pushing the adjacent sliding disk 13 to move upward and compressing the adjacent spring. When the locking member 7 is aligned with the adjacent groove, the sliding disk 13 is reset under the action of the adjacent spring and transmits the adjacent locking member 7 to insert into the adjacent groove.

[0032] The main rod 1 is slidably connected with a plurality of (three are taken as an example in the figure) circumferentially evenly distributed limit columns 15, and a spring is arranged between the limit column 15 and the main rod 1. The spring is initially in a compressed state. Only when the extrusion force of the sliding plate 14 on the adjacent limit column 15 is sufficient, can the limit column 15 be pushed to move and further compress the adjacent spring. The limit column 15 is limitedly matched with the adjacent sliding plate 14, and the sliding plate 14 is provided with a positioning groove that is limitedly matched with the adjacent limit column 15. When the sliding plate 14 moves downward, the sliding plate 14 squeezes the adjacent limit column 15. When the positioning groove on the sliding plate 14 is aligned with the adjacent limit column 15, the limit column 15 is inserted into the adjacent positioning groove on the sliding plate 14 under the action of the adjacent spring.

[0033] The slide bar 8 is fixedly connected with an extrusion ring 16. The middle diameter of the slide bar 8 is small, which is used to prevent the slide bar 8 from contacting the three sliding plates 14. There is a gap between the extrusion ring 16 and the main rod 1. The three sliding plates 14 are all extruded and matched with the extrusion ring 16. The side of the sliding plate 14 close to the slide bar 8 is made of elastic material, so that the sliding plate 14 is deformed when it is squeezed. The side of the sliding plate 14 away from the slide bar 8 is made of hard material. When the adjacent limit column 15 contacts the sliding plate 14, a collision occurs. When the extrusion ring 16 moves downward, the extrusion ring 16 pushes the three The sliding plate 14 moves downward, and when the sliding plate 14 moves to the lower side of the limit column 15, the sliding plate 14 is supported by the main rod 1 and stops moving. At this time, the extrusion ring 16 continues to squeeze the sliding plate 14, and the sliding plate 14 is bent. When the extrusion ring 16 moves upward, the extrusion ring 16 contacts the sliding plate 14 again, and the sliding plate 14 moves upward. After the sliding plate 14 returns to its original position, the extrusion ring 16 squeezes the sliding plate 14 again to bend it. When the extrusion ring 16 separates from the sliding plate 14, the sliding plate 14 is reset under the action of its own elasticity.

[0034] When using the device, first move the slide bar 8 downward so that the slide bar 8 drives the slide plate 14 to move downward to the lower side of the adjacent limit column 15 through the squeeze ring 16, and then take samples. As the soil in the sampling tube 3 gradually increases, the soil in the sampling tube 3 contacts the scraper 9, and the soil pushes the scraper 9 to move upward. The scraper 9 drives the squeeze ring 16 to move upward, and the squeeze ring 16 pushes the slide plate 14 to move upward. The positioning groove of the slide plate 14 is aligned with the adjacent limit column 15. A sound is made when the limit column 15 is inserted into the adjacent positioning groove, indicating that the soil in the sampling tube 3 is full. Then the soil is transferred to the storage box. During this process, the locking member 7 is always located in the adjacent groove. When the slide When the movable plate 14 is located at the lower side of the adjacent limiting column 15, the adjacent thin rope is in a relaxed state. When the sliding plate 14 is located at the upper side of the adjacent limiting column 15 and the positioning groove of the sliding plate 14 is aligned with the adjacent limiting column 15, the adjacent thin rope is in a taut state. When the soil in the sampling tube 3 is transferred, the extrusion ring 16 drives the sliding plate 14 back to the upper side of the adjacent limiting column 15. At this time, the sliding plate 14 pulls the adjacent sliding disk 13 upward through the adjacent thin rope, and the sliding disk 13 drives the adjacent locking piece 7 to separate from the adjacent groove, thereby facilitating the separation of the connecting piece 2 and the sampling tube 3. After the sampling is completed, the device can be directly disassembled and put back into the tool kit. If sampling needs to be continued, just move the slide bar 8 downward again.

[0035] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A soil detection sampling device, characterized in that it comprises: A main rod (1), the lower side of which is fixedly connected with connecting pieces (2) evenly distributed in the circumferential direction; A sampling cylinder (3) is arranged below the main rod (1), and the sampling cylinder (3) is provided with circumferentially evenly distributed inclined grooves, the inclined grooves are pressed and matched with the adjacent connecting piece (2), and the main rod (1) and the sampling cylinder (3) are quickly connected by sliding the connecting piece (2) into the adjacent inclined groove; An operating handle (4) is arranged on the upper side of the main rod (1), the operating handle (4) is provided with a first sliding groove (401), the first sliding groove (401) is slidably connected with a first limiting member (5), a spring is arranged between the first limiting member (5) and the operating handle (4), the main rod (1) is provided with a limiting groove that cooperates with the first limiting member (5), and a quick connection between the main rod (1) and the operating handle (4) is achieved by limiting between the first limiting member (5) and an adjacent limiting groove.

2. A soil detection sampling device according to claim 1, Its characteristics are: A threaded protrusion is provided on the outer side of the sampling tube (3) for assisting the sampling tube (3) in being inserted into the soil for sampling.

3. A soil detection sampling device according to claim 1, Its characteristics are: The operating handle (4) is provided with a second slide groove (402), the second slide groove (402) is slidably connected to a sliding member (6), the first slide groove (401) and the second slide groove (402) are communicated and both are filled with liquid.

4. A soil detection sampling device according to claim 1, Its characteristics are: The connecting member (2) is provided with a third sliding groove (201), the third sliding groove (201) is slidably connected with a locking member (7), the sampling tube (3) is provided with grooves evenly distributed in the circumferential direction, and the locking member (7) is limitedly matched with adjacent grooves.

5. A soil detection sampling device according to claim 4, Its characteristics are: Also included are: A sliding rod (8), wherein the sliding rod (8) is arranged inside the main rod (1); A plurality of scraping knives (9) are evenly distributed in the circumferential direction, and the plurality of scraping knives (9) are fixedly connected to the lower side of the sliding rod (8); The cleaning piece (10) is fixedly connected to the lower side of the slide rod (8), and the scraping knives (9) uniformly distributed in the circumferential direction are all squeezed and matched with the cleaning piece (10). The cleaning piece (10) is slidably matched with the inner wall of the sampling tube (3), and the movement of the soil is controlled by the deformation of the cleaning piece (10).

6. A soil detection sampling device according to claim 5, Its characteristics are: Also included are: An operating member (11) is arranged on the upper side of the slide bar (8); The second limiting member (12) is slidably connected to the operating member (11); a spring is provided between the second limiting member (12) and the operating member (11); the slide bar (8) is provided with a slot; the second limiting member (12) is in limiting engagement with the slot; and the second limiting member (12) is in extrusion engagement with the slide bar (8).

7. A soil detection sampling device according to claim 6, Its characteristics are: The second limiting member (12) is provided with inclined surfaces which are symmetrically distributed up and down.

8. A soil detection sampling device according to claim 7, Its characteristics are: Also included are: Sliding plates (13), the number of the sliding plates (13) being the same as the number of the connecting members (2), the main rod (1) being provided with fourth sliding grooves (101) uniformly distributed in the circumferential direction, the sliding plates (13) being slidably connected in adjacent fourth sliding grooves (101), the fourth sliding grooves (101) being connected with the adjacent third sliding grooves (201), and both being filled with liquid; A sliding plate (14), the number of the sliding plates (14) being the same as the number of the sliding discs (13), the sliding plate (14) being slidably connected to the main rod (1), and a spring and a thin rope being arranged between the sliding plate (14) and the adjacent sliding disc (13).

9. A soil detection sampling device according to claim 8, Its characteristics are: The main rod (1) is slidably connected to limit posts (15) uniformly distributed in the circumferential direction, a spring is provided between the limit posts (15) and the main rod (1), the limit posts (15) are in position-limiting cooperation with adjacent sliding plates (14), and the sliding plates (14) are provided with positioning grooves that are in position-limiting cooperation with adjacent limit posts (15).

10. A soil detection sampling device according to claim 9, Its characteristics are: The sliding rod (8) is fixedly connected to an extrusion ring (16), and the sliding plates (14) uniformly distributed in the circumferential direction are all extruded and matched with the extrusion ring (16), and the sliding plates (14) are made of elastic material.

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