Surface soil sampling device for soil detection

Abstract

The invention provides a surface soil sampling device for soil detection, and belongs to the technical field of soil sampling. The surface soil sampling device for soil detection comprises a bottom plate, a fixing frame is fixedly mounted on the top surface of the bottom plate, a mounting frame is fixedly mounted on the top surface of the fixing frame, a motor is fixedly mounted in the mounting frame, a first sampling pipe is mounted on the bottom surface of a connecting cover, and a second sampling pipe is mounted on the bottom surface of the connecting cover. A surface soil sampling assembly is arranged in the sampling pipe I. In the contraction process of a second electric telescopic rod, a first connecting plate can be driven to move in the direction of a first limiting frame, two second supports are driven to move in the direction of a second sampling pipe, and when a protective pad makes contact with one end of the second sampling pipe, the second sampling pipe is driven to move towards the outer side of the first sampling pipe; after the two second sampling pipes are inserted into the soil on the two sides of the first sampling pipe, the soil on the two sides of the first sampling pipe can be collected into the second sampling pipes, and therefore the purpose of collecting the surface soil is achieved.

Description

Technical Field

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

[0002] With the development of modern agriculture and the increase in demand for environmental protection, soil testing has become an important part of agricultural production and environmental monitoring. Traditional soil sampling devices mostly use an overall penetration sampling method. During the collection process, the surface soil is easily mixed with the deep soil, resulting in a decrease in the representativeness of the surface samples. In the prior art, the sampling tube lacks a stratified sampling structure, and the collected soil samples have layer confusion problems; soil impurities are easy to adhere to the tube wall during the sampling process, affecting the accuracy of the detection; at the same time, most devices lack automatic cleaning functions, and there is a risk of cross-contamination when reused. In addition, traditional equipment lacks an intelligent control module, and the sampling depth control relies on manual experience, resulting in low operating efficiency. How to achieve accurate stratified sampling, maintain the cleanliness of the sampling tube, and improve the level of sampling automation has become a technical problem that needs to be solved urgently for current soil sampling equipment. Summary of the invention

[0003] In order to make up for the above deficiencies, the present invention provides a surface soil sampling device for soil testing that overcomes the above technical problems or at least partially solves the above problems.

[0004] The present invention is achieved in that: The present invention provides a surface soil sampling device for soil detection, comprising a bottom plate, a fixing frame is fixedly installed on the top surface of the bottom plate, a mounting frame is fixedly installed on the top surface of the fixing frame, a motor is fixedly installed inside the mounting frame, an output end of the motor extends to the bottom surface of the fixing frame, a cross is fixedly installed on the output end of the motor, a connecting cover is arranged below the cross, a sampling tube 1 is installed on the bottom surface of the connecting cover, a sealing disk is movably clamped on the sampling tube 1, a sampling groove is opened on the top surface of the bottom plate, a surface soil sampling assembly is arranged inside the sampling tube 1, and an auxiliary sampling assembly is arranged below the sampling tube 1; The surface soil sampling assembly comprises a limit frame 1, two electric telescopic rods are fixedly installed on both sides of the limit frame 1, a connecting plate 1 is fixedly installed on the output end of the electric telescopic rod 2, a bracket 1 is fixedly installed on one side surface of the two connecting plates 1, and the insides of the two brackets 1 are movably connected with the connecting plate 2 and the bracket 2, respectively, and the surface soil sampling assembly is used for sampling the surface soil; The auxiliary sampling assembly comprises a collecting box 1 and a collecting box 2. Storage boxes are fixedly mounted on the outer surfaces of the collecting box 1 and the collecting box 2. The auxiliary sampling assembly is used for collecting sampled soil.

[0005] In a preferred solution, one end of the connecting plate 2 and the bracket 2 is provided with a connecting plate 3, one end of the connecting plate 2 and the bracket 2 is movably connected to the inside of the connecting plate 3, and a protective pad is fixedly installed on one side surface of the bracket 2. In a preferred solution, a clamping plate is movably clamped inside the limiting frame 1, and top plates are fixedly installed at both ends of the top surface of the clamping plate. A clamping groove is provided on the top surface of the top plate, and a fixed sleeve frame and a movable sleeve frame are arranged inside the clamping groove. The fixed sleeve frame is fixedly installed inside the clamping groove, and the movable sleeve frame is movably clamped inside the clamping groove. Sampling tube 2 is arranged inside the fixed sleeve frame and the movable sleeve frame, and one end of the sampling tube 2 is movably sleeved inside the fixed sleeve frame, and the other end of the sampling tube 2 is fixedly installed inside the movable sleeve frame.

[0006] In a preferred solution, a contact rod is fixedly installed on the bottom surface of the clamping plate, a contact switch is fixedly installed inside the limit frame 1, the contact switch is electrically connected to the electric telescopic rod 2, and a cleaning assembly is arranged below the electric telescopic rod 2.

[0007] In a preferred solution, the cleaning assembly includes an installation box, and the number of the installation boxes is two. The two installation boxes are respectively located below the second electric telescopic rod, and a capsule body is installed inside the installation box. A back plate is provided on one side of the capsule body, and the back plate is movably connected to the inside of the installation box. A through groove is provided on the top surface of the installation box, and a connecting block is fixedly installed on the top surface of the back plate, and the top surface of the connecting block is fixedly connected to the bottom surface of the connecting plate one.

[0008] In a preferred embodiment, an air inlet pipe is fixedly connected to one side surface of the installation box, a one-way valve 2 is fixedly installed on the outer surface of the air inlet pipe, an air outlet pipe is fixedly connected to one side surface of the installation box, a one-way valve 1 is fixedly installed on the outer surface of the air outlet pipe, and one end of the air outlet pipe extends to the interior of sampling tube 2.

[0009] In a preferred solution, a ratchet group is installed on the outer surface of the output shaft of the motor, tooth plates are provided on both sides of the ratchet group, limiting grooves are provided on one side surface of the tooth plates, L-shaped frames are fixedly installed on both side surfaces of the fixed frame, and a limiting block is fixedly installed on the bottom end of the L-shaped frame, and the limiting block is movably clamped in the inside of the limiting groove.

[0010] In a preferred solution, a connecting frame is fixedly connected to the bottom surface of the tooth plate, the other end of the connecting frame is fixedly mounted on a side surface of the storage box, and electromagnets are fixedly mounted on both side inner walls of the fixing frame.

[0011] In a preferred solution, two movable plates are provided on the bottom surface of the base plate, and scrapers are fixedly installed on the bottom surfaces of the two movable plates. Plug-in grooves are opened on both sides of the base plate, and plug-in strips are fixedly installed on both sides of the two movable plates. The movable plates are clamped in the inside of the plug-in grooves through the plug-in strips, and connecting columns are fixedly installed on the bottom surfaces of the collection box 1 and the collection box 2, and the other ends of the two connecting columns are fixedly connected to the two movable plates respectively.

[0012] In a preferred solution, two electric telescopic rods 1 are symmetrically arranged on the bottom surface of the cross, and the output ends of the two electric telescopic rods 1 are fixedly connected to the top surface of the connecting cover. Two limit frames 2 are symmetrically installed on the bottom surface of the cross, and the interiors of the two limit frames 2 are movably connected with connecting seat plates, one end of the connecting seat plate is fixedly installed on the top surface of the connecting cover, and two through holes are provided on the outer surface of the connecting cover.

[0013] The present invention provides a surface soil sampling device for soil detection, and its beneficial effects include: Precise stratified sampling technology: Through the linkage between the independently set surface soil sampling component and the main sampling tube, the laterally retractable sampling tube 2 is used to automatically collect the surface soil after the sampling tube 1 reaches the set depth. The spring buffer mechanism is used to ensure the consistency of the sampling depth, effectively solving the problem of layer confusion in traditional devices and ensuring the independence and representativeness of surface samples.

[0014] Intelligent cleaning system: The innovatively designed cleaning component generates airflow through capsule compression, automatically purging and cleaning the sampling tube before and after sampling. This design has dual functions: on the one hand, it removes the residue on the tube wall to avoid cross contamination, and on the other hand, it improves the collection efficiency of loose soil through airflow disturbance, while increasing the soil oxygen content to maintain sample activity.

[0015] Modular collection device: The auxiliary sampling component adopts an electromagnetic adsorption collection box structure, and the intelligent expansion and closing of the collection box is realized through the precise cooperation of the ratchet group and the tooth plate. After the sampling is completed, different levels of samples can be automatically separated. With the movable bottom plate structure with a scraper, the surface impurities are cleaned synchronously when the device is positioned to improve the purity of the sample.

[0016] Closed-loop control system: An intelligent linkage system integrating contact switches and electric telescopic rods. When the sealing disk triggers the surface sampling trigger mechanism, the system automatically stops the main sampling tube from pressing down and starts the lateral sampling program, achieving millimeter-level precision control of the sampling depth, which increases efficiency by times compared to traditional manual operations.

[0017] Adaptive protection structure: A buffer mechanism consisting of a protective pad and a spring is used to provide flexible contact protection during lateral sampling to avoid damage to the sample structure caused by hard impact. It is particularly suitable for sampling compacted soils and extends the service life of the equipment.

[0018] Through mechatronic design, this device has overcome key technical difficulties such as soil stratified sampling, sample anti-pollution, and intelligent control, providing a high-fidelity sample collection solution for soil composition analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a stereogram provided by an embodiment of the present invention.

[0021] Figure 2 A schematic diagram of the structure of a sampling tube provided in an embodiment of the present invention.

[0022] Figure 3 A schematic diagram of the cross-sectional structure of a sampling tube provided in an embodiment of the present invention.

[0023] Figure 4 A schematic diagram of the cleaning component structure provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the bottom structure of a fixing frame provided in an embodiment of the present invention.

[0025] Figure 6 A schematic diagram of the structure of an auxiliary sampling assembly provided in an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the overall bottom view structure provided for an embodiment of the present invention.

[0027] Figure 8 The present invention is provided as a schematic diagram of the overall front view structure of the embodiment of the present invention.

[0028] Fig. 9 A schematic diagram of the second structure of the limiting frame provided in an embodiment of the present invention.

[0029] In the figure: 1, bottom plate; 2, fixed frame; 3, mounting frame; 4, motor; 5, cross; 6, electric telescopic rod 1; 7, connecting cover; 8, through hole; 9, sampling tube 1; 10, surface soil sampling assembly; 1001, limit frame 1; 1002, electric telescopic rod 2; 1003, connecting plate 1; 1004, bracket 1; 1005, connecting plate 2; 1006, bracket 2; 1007, connecting plate 3; 1008, protective pad; 1009, sampling tube 2; 1010, clamping plate; 1012, top plate; 1013, clamping groove; 1014, fixed sleeve; 1015, movable sleeve; 1016, spring; 1017, contact switch; 1018, contact rod; 11, limit frame 2; 12 , connecting seat plate; 13, sampling slot; 14, auxiliary sampling assembly; 1401, collecting box one; 1402, collecting box two; 1403, storage box; 1404, ratchet group; 1405, L-shaped frame; 1406, limit block; 1407, tooth plate; 1408, limit slot; 1409, connecting frame; 1410, electromagnet; 1412, movable plate; 1413, scraper; 1414, plug-in slot; 1415, connecting column; 15, sealing disk; 16, cleaning assembly; 1601, installation box; 1602, capsule; 1603, abutment plate; 1604, through slot; 1605, connecting block; 1606, outlet pipe; 1607, one-way valve one; 1608, inlet pipe; 1609, one-way valve two. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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. Example

[0031] Reference Figure 1-Figure 9 The present invention provides a technical solution: a surface soil sampling device for soil detection, comprising a bottom plate 1, a fixing frame 2 is fixedly installed on the top surface of the bottom plate 1, a mounting frame 3 is fixedly installed on the top surface of the fixing frame 2, a motor 4 is fixedly installed inside the mounting frame 3, the output end of the motor 4 extends to the bottom surface of the fixing frame 2, a cross 5 is fixedly installed on the output end of the motor 4, a connecting cover 7 is arranged below the cross 5, a sampling tube 9 is installed on the bottom surface of the connecting cover 7, a sealing disk 15 is movably connected to the sampling tube 9, a sampling groove 13 is opened on the top surface of the bottom plate 1, a surface soil sampling assembly 10 is arranged inside the sampling tube 9, and an auxiliary sampling assembly 14 is arranged below the sampling tube 9.

[0032] Two electric telescopic rods 6 are symmetrically arranged on the bottom surface of the cross 5, and the output ends of the two electric telescopic rods 6 are fixedly connected to the top surface of the connecting cover 7. Two limit frames 11 are symmetrically installed on the bottom surface of the cross 5. The interiors of the two limit frames 11 are movably connected with a connecting seat plate 12. One end of the connecting seat plate 12 is fixedly installed on the top surface of the connecting cover 7, and two through holes 8 are provided on the outer surface of the connecting cover 7.

[0033] When working, when in use, first transport the entire device to a suitable sampling position, and then fix the entire device. During the sampling process, it is only necessary to control the motor 4 to start. When the motor 4 rotates, the rotating connecting cover 7 and the sampling tube 9 are driven to move downward by controlling the electric telescopic rod 6 until the rotating sampling tube 9 contacts the ground surface. Then, the sampling tube 9 can be rotated to make the sampling tube 9 slowly move toward the underground. During the movement, the soil sample can be collected into the interior of the sampling tube 9, and as the sampling tube 9 moves downward, the soil entering the interior of the sampling tube 9 can push the sealing disk 15 to move upward, so that the negative pressure generated inside the sampling tube 9 collects the collected soil sample inside the sampling tube 9, thereby completing the soil sample collection operation.

[0034] The surface soil sampling assembly 10 includes a limit frame 1001, and electric telescopic rods 1002 are fixedly installed on both sides of the limit frame 1001. Connecting plates 1003 are fixedly installed on the output ends of the electric telescopic rods 1002. Brackets 1004 are fixedly installed on the surface of one side of the two connecting plates 1003. The interiors of the two brackets 1004 are movably connected with connecting plates 1005 and brackets 1006 respectively. The surface soil sampling assembly 10 is configured for sampling surface soil.

[0035] One end of the connecting plate 2 1005 and the bracket 2 1006 is provided with a connecting plate 3 1007, and one end of the connecting plate 2 1005 and the bracket 2 1006 is movably connected to the inside of the connecting plate 3 1007, and a protective pad 1008 is fixedly installed on one side surface of the bracket 2 1006, and the internal movability of the limit frame 1001 is connected with a clamping plate 1010, and both ends of the top surface of the clamping plate 1010 are fixedly installed with a top plate 1012, and the top surface of the top plate 1012 is provided with a clamping groove 1013, and a fixed sleeve frame 1014 and a movable sleeve frame 1015 are arranged inside the clamping groove 1013, and a spring 1016 is fixedly connected between the fixed sleeve frame 1014 and the movable sleeve frame 1015, and the fixed sleeve frame 1014 is fixedly installed inside the card slot 1013, and the movable sleeve frame 1015 is movably carded inside the card slot 1013. The fixed sleeve frame 1014 and the movable sleeve frame 1015 are provided with sampling tube 2 1009. One end of the sampling tube 2 1009 is movably carded inside the fixed sleeve frame 1014, and the other end of the sampling tube 2 1009 is fixedly installed inside the movable sleeve frame 1015. A contact rod 1018 is fixedly installed on the bottom surface of the card plate 1010, and a contact switch 1017 is fixedly installed inside the limit frame 1001. The contact switch 1017 is electrically connected to the electric telescopic rod 2 1002, and a cleaning component 16 is provided below the electric telescopic rod 2 1002.

[0036] During operation, as the sealing disk 15 moves upward, it can contact the bottom end of the contact rod 1018. After the contact, as the sealing disk 15 rises, it can drive the clamping plate 1010 to move upward inside the limit frame 1001. During the movement, the sampling tube 2 1009 is driven to move upward until the top of the top plate 1012 contacts the contact switch 1017. Then, the contact switch 1017 can be used to control the motor 4 to stop rotating, and the electric telescopic rod 1 6 to stop moving. Finally, the electric telescopic rod 2 1002 is controlled to start. At this time, the height of the sampling tube 2 1009 is located at the position of the protective pad 1008. When the electric telescopic rod 2 1002 is controlled to start, it can be retracted, and the connecting plate can be driven during the retraction process. 1003 moves toward the direction of the limit frame 1001, thereby driving the two brackets 1006 to move toward the direction of the sampling tube 1009. When the protective pad 1008 contacts one end of the sampling tube 1009, the sampling tube 1009 can be driven to move toward the outside of the sampling tube 9, that is, the sampling tube 1009 is pushed to move toward the soil outside the sampling tube 9, until the two sampling tubes 1009 are inserted into the soil on both sides of the sampling tube 9, the soil on both sides of the sampling tube 9 can be collected into the interior of the sampling tube 1009. Since the height of the sampling tube 1009 is close to the ground at this time, the purpose of collecting the surface soil is achieved, avoiding the problem of low representativeness of the surface soil samples collected by the existing sampling device.

[0037] The cleaning assembly 16 includes an installation box 1601, and the number of the installation boxes 1601 is two. The two installation boxes 1601 are respectively located below the electric telescopic rod 1002. The installation box 1601 is installed with a capsule 1602 inside. A side of the capsule 1602 is provided with a plate 1603, and the plate 1603 is movably connected to the inside of the installation box 1601. The top surface of the installation box 1601 is provided with a through groove 1604, and the top surface of the plate 1603 is fixedly installed with a connecting block 1 605, the top surface of the connecting block 1605 is fixedly connected to the bottom surface of the connecting plate 1003, an air inlet pipe 1608 is fixedly connected to the surface of one side of the installation box 1601, a one-way valve 1609 is fixedly installed on the outer surface of the air inlet pipe 1608, an air outlet pipe 1606 is fixedly connected to the surface of one side of the installation box 1601, a one-way valve 1607 is fixedly installed on the outer surface of the air outlet pipe 1606, and one end of the air outlet pipe 1606 extends to the interior of the sampling tube 1009.

[0038] During operation, when the electric telescopic rod 1002 contracts and drives the connecting plate 1003 to move, the connecting block 1605 can synchronously drive the plate 1603 to move inside the capsule 1602. During the movement, the capsule 1602 can be squeezed, and the air inside the capsule 1602 can be squeezed into the interior of the air outlet pipe 1606. After the air enters the interior of the air outlet pipe 1606, the impurities remaining on the inner wall of the air outlet pipe 1606 can be cleaned, ensuring that no impurities will remain inside the sampling tube 1009 during the subsequent collection of the surface soil, thereby ensuring the cleanliness of the subsequent sampling. Moreover, in actual use, after the sampling tube 1009 is inserted into the interior of the surface soil, the air outlet pipe 1606 will continue to exhaust air, and the air will enter the gaps in the soil and be discharged through the gaps. On the one hand, it can increase the oxygen content inside the soil, so that the surface soil sample will not deteriorate. On the other hand, it can also blow out the loose soil that cannot adhere to it, which is convenient for subsequent sample collection.

[0039] The auxiliary sampling assembly 14 includes a collecting box 1 1401 and a collecting box 2 1402 . A storage box 1403 is fixedly installed on the outer surface of the collecting box 1 1401 and the collecting box 2 1402 . The auxiliary sampling assembly 14 is configured to collect sampled soil.

[0040] A ratchet group 1404 is installed on the outer surface of the output shaft of the motor 4, and tooth plates 1407 are arranged on both sides of the ratchet group 1404. Limiting grooves 1408 are provided on one side surface of the tooth plate 1407. L-shaped frames 1405 are fixedly installed on both side surfaces of the fixed frame 2. A limiting block 1406 is fixedly installed on the bottom end of the L-shaped frame 1405. The limiting block 1406 is movably connected to the inside of the limiting groove 1408. A connecting frame 1409 is fixedly connected to the bottom surface of the tooth plate 1407. The other end of the connecting frame 1409 is fixedly installed on one side surface of the storage box 1403. Electromagnets 1410 are fixedly installed on the inner walls of both sides of the fixed frame 2.

[0041] During operation, before soil sampling, the motor 4 can be rotated in the reverse direction to drive the ratchet set 1404 to rotate, thereby driving the two tooth plates 1407 to move toward the two sides of the motor 4. During the movement, the collecting box 1 1401 and the collecting box 2 1402 can be driven to gradually move away from the sampling tube 1 9, so that the sampling tube 1 9 is completely exposed, which is convenient for subsequent collection operations. After the two storage boxes 1403 are adsorbed by the two electromagnets 1410, the above-mentioned sampling operation can be carried out. In this process, the sampling tube 1 9 is in a relatively closed state before sampling, which can prevent the sampling tube 1 9 from being damaged. Impurities enter the interior of the sampling tube 9 to protect the sampling tube 9. After the sampling of the sampling tube 9 is completed, the sampling tube 9 can be driven to move to the top of the bottom plate 1 by controlling the electric telescopic rod 6, and then the collecting box 1401 and the collecting box 2 1402 are overlapped again, so that the samples in the sampling tube 9 and the sampling tube 2 1009 can be discharged into the collecting box 1 1401, the collecting box 2 1402 and the storage box 1403 respectively for collection, thereby achieving the purpose of separately collecting the collected soil samples and avoiding confusion of the collected soil samples.

[0042] Two movable plates 1412 are arranged on the bottom surface of the base plate 1, and scrapers 1413 are fixedly installed on the bottom surfaces of the two movable plates 1412. Plug-in grooves 1414 are opened on both sides of the base plate 1, and plug-in strips are fixedly installed on both sides of the two movable plates 1412. The movable plates 1412 are clamped in the inside of the plug-in grooves 1414 through the plug-in strips. Connecting columns 1415 are fixedly installed on the bottom surfaces of the collection box 1 1401 and the collection box 2 1402, and the other ends of the two connecting columns 1415 are fixedly connected to the two movable plates 1412 respectively.

[0043] During operation, when the device is placed as a whole, the scraper 1413 will be inserted into the soil. When the collecting box 1401 and the collecting box 2 1402 move toward the direction of the electromagnet 1410, the top layer of soil can be scraped off, that is, the exposed soil can be cleaned, thereby ensuring the purity of the sample collected by the sampling tube 9 during the collection process.

[0044] Specifically, the working process or working principle of the surface soil sampling device for soil detection is as follows: when in use, the device is first transported to a suitable sampling position as a whole, and then the device is fixed as a whole. During the sampling process, it is only necessary to control the motor 4 to start. When the motor 4 rotates, the rotating connecting cover 7 and the sampling tube 9 are driven to move downward by controlling the electric telescopic rod 6 until the rotating sampling tube 9 contacts the ground surface. Then, the sampling tube 9 can be rotated to make the sampling tube 9 slowly move toward the underground. During the movement, the soil sample can be collected into the interior of the sampling tube 9, and as the sampling tube 9 moves downward, the soil entering the interior of the sampling tube 9 can push the sealing disk 15 to move upward, so that the negative pressure generated inside the sampling tube 9 collects the collected soil sample inside the sampling tube 9.

[0045] As the sealing disk 15 moves upward, it can contact the bottom end of the contact rod 1018. After the contact, as the sealing disk 15 rises, it can drive the clamping plate 1010 to move upward inside the limit frame 1001. During the movement, it drives the sampling tube 2 1009 to move upward until the top of the top plate 1012 contacts the contact switch 1017. The contact switch 1017 can then be used to control the motor 4 to stop rotating, and the electric telescopic rod 1 6 to stop moving. Finally, the electric telescopic rod 2 1002 can be controlled to start. At this time, the height of the sampling tube 2 1009 is at the position of the protective pad 1008.

[0046] When the electric telescopic rod 1002 is controlled to start, it can shrink. During the shrinkage process, it can drive the connecting plate 1003 to move toward the limit frame 1001, thereby driving the two brackets 1006 to move toward the sampling tube 1009. When the protective pad 1008 contacts one end of the sampling tube 1009, it can drive the sampling tube 1009 to move toward the outside of the sampling tube 9, that is, push the sampling tube 1009 to move toward the soil outside the sampling tube 9, until the two sampling tubes 1009 are inserted into the soil on both sides of the sampling tube 9, and then the soil on both sides of the sampling tube 9 can be collected into the inside of the sampling tube 1009.

[0047] Before soil sampling, the motor 4 can be rotated in the reverse direction to drive the ratchet group 1404 to rotate, thereby driving the two tooth plates 1407 to move toward the two sides of the motor 4. During the movement, the collection box 1 1401 and the collection box 2 1402 can be driven to gradually move away from the sampling tube 1 9, so that the sampling tube 1 9 is completely exposed to facilitate subsequent collection operations. After the two storage boxes 1403 are adsorbed by the two electromagnets 1410, the above-mentioned sampling operation can be carried out. In this process, the sampling tube 1 9 is relatively loose before sampling. The closed state can prevent impurities from entering the interior of the sampling tube 9 before sampling, thereby protecting the sampling tube 9. Moreover, after the sampling of the sampling tube 9 is completed, the sampling tube 9 can be driven to move to the top of the bottom plate 1 by controlling the electric telescopic rod 6, and then the collecting box 1401 and the collecting box 2 1402 are overlapped again, so that the samples in the sampling tube 9 and the sampling tube 2 1009 can be discharged into the collecting box 1 1401, the collecting box 2 1402 and the storage box 1403 respectively for collection.

[0048] It should be noted that the motor 4 and the electric telescopic rod 6 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A surface soil sampling device for soil testing, comprising a bottom plate (1), characterized in that: A fixing frame (2) is fixedly mounted on the top surface of the bottom plate (1), a mounting frame (3) is fixedly mounted on the top surface of the fixing frame (2), a motor (4) is fixedly mounted inside the mounting frame (3), an output end of the motor (4) extends to the bottom surface of the fixing frame (2), a cross (5) is fixedly mounted on the output end of the motor (4), a connecting cover (7) is arranged below the cross (5), a sampling tube 1 (9) is mounted on the bottom surface of the connecting cover (7), a sealing disk (15) is movably connected to the sampling tube 1 (9), a sampling groove (13) is provided on the top surface of the bottom plate (1), a surface soil sampling assembly (10) is arranged inside the sampling tube 1 (9), and an auxiliary sampling assembly (14) is arranged below the sampling tube 1 (9); The surface soil sampling assembly (10) comprises a limiting frame 1 (1001), electric telescopic rods 2 (1002) are fixedly mounted on both sides of the limiting frame 1 (1001), connecting plates 1 (1003) are fixedly mounted on the output ends of the electric telescopic rods 2 (1002), brackets 1 (1004) are fixedly mounted on the surfaces of one side of the two connecting plates 1 (1003), and connecting plates 2 (1005) and brackets 2 (1006) are movably connected inside the two brackets 1 (1004), respectively. The surface soil sampling assembly (10) is configured for sampling surface soil; The auxiliary sampling assembly (14) comprises a first collecting box (1401) and a second collecting box (1402), and a storage box (1403) is fixedly mounted on the outer surface of each of the first collecting box (1401) and the second collecting box (1402). The auxiliary sampling assembly (14) is configured to collect sampled soil.

2. A surface soil sampling device for soil detection according to claim 1, characterized in that: One end of the connecting plate 2 (1005) and the bracket 2 (1006) is provided with a connecting plate 3 (1007), and one end of the connecting plate 2 (1005) and the bracket 2 (1006) are movably connected inside the connecting plate 3 (1007), and a protective pad (1008) is fixedly installed on one side surface of the bracket 2 (1006).

3. A surface soil sampling device for soil detection according to claim 2, characterized in that: A clamping plate (1010) is movably clamped inside the limiting frame 1 (1001), and top plates (1012) are fixedly installed at both ends of the top surface of the clamping plate (1010). A clamping groove (1013) is provided on the top surface of the top plate (1012), and a fixed sleeve frame (1014) and a movable sleeve frame (1015) are arranged inside the clamping groove (1013). The fixed sleeve frame (1014) is fixedly installed inside the clamping groove (1013), and the movable sleeve frame (1015) is movably clamped inside the clamping groove (1013). Sampling tube 2 (1009) is arranged inside the fixed sleeve frame (1014) and the movable sleeve frame (1015), and one end of the sampling tube 2 (1009) is movably sleeved inside the fixed sleeve frame (1014), and the other end of the sampling tube 2 (1009) is fixedly installed inside the movable sleeve frame (1015).

4. A surface soil sampling device for soil detection according to claim 3, characterized in that: A contact rod (1018) is fixedly mounted on the bottom surface of the clamping plate (1010), a contact switch (1017) is fixedly mounted inside the first limiting frame (1001), the contact switch (1017) is electrically connected to the second electric telescopic rod (1002), and a cleaning assembly (16) is arranged below the second electric telescopic rod (1002).

5. A surface soil sampling device for soil detection according to claim 4, characterized in that: The cleaning assembly (16) comprises an installation box (1601), wherein the number of the installation boxes (1601) is two, and the two installation boxes (1601) are respectively located below the second electric telescopic rod (1002); a capsule body (1602) is installed inside the installation box (1601); a support plate (1603) is provided on one side of the capsule body (1602); the support plate (1603) is movably connected to the inside of the installation box (1601); a through groove (1604) is provided on the top surface of the installation box (1601); a connecting block (1605) is fixedly installed on the top surface of the support plate (1603); and the top surface of the connecting block (1605) is fixedly connected to the bottom surface of the first connecting plate (1003).

6. A surface soil sampling device for soil testing according to claim 5, characterized in that: An air inlet pipe (1608) is fixedly connected to a surface of one side of the installation box (1601), and a one-way valve 2 (1609) is fixedly installed on the outer surface of the air inlet pipe (1608). An air outlet pipe (1606) is fixedly connected to a surface of one side of the installation box (1601), and a one-way valve 1 (1607) is fixedly installed on the outer surface of the air outlet pipe (1606). One end of the air outlet pipe (1606) extends to the interior of sampling pipe 2 (1009).

7. A surface soil sampling device for soil detection according to claim 6, characterized in that: A ratchet group (1404) is mounted on the outer surface of the output shaft of the motor (4); tooth plates (1407) are arranged on both sides of the ratchet group (1404); a limiting groove (1408) is provided on one side surface of the tooth plate (1407); an L-shaped frame (1405) is fixedly mounted on both side surfaces of the fixing frame (2); a limiting block (1406) is fixedly mounted on the bottom end of the L-shaped frame (1405); and the limiting block (1406) is movably engaged in the inside of the limiting groove (1408).

8. A surface soil sampling device for soil testing according to claim 7, characterized in that: The bottom surface of the tooth plate (1407) is fixedly connected to a connecting frame (1409), the other end of the connecting frame (1409) is fixedly mounted on a side surface of the storage box (1403), and electromagnets (1410) are fixedly mounted on both side inner walls of the fixing frame (2).

9. A surface soil sampling device for soil detection according to any one of claims 1 to 8, characterized in that: Two movable plates (1412) are arranged on the bottom surface of the bottom plate (1), and scrapers (1413) are fixedly installed on the bottom surfaces of the two movable plates (1412). Plug-in grooves (1414) are provided on both sides of the bottom plate (1), and plug-in strips are fixedly installed on both sides of the two movable plates (1412). The movable plates (1412) are clamped in the inside of the plug-in grooves (1414) through the plug-in strips. Connecting columns (1415) are fixedly installed on the bottom surfaces of the collection box 1 (1401) and the collection box 2 (1402), and the other ends of the two connecting columns (1415) are fixedly connected to the two movable plates (1412) respectively.

10. A surface soil sampling device for soil testing according to claim 9, characterized in that: Two electric telescopic rods (6) are symmetrically arranged on the bottom surface of the cross (5), and the output ends of the two electric telescopic rods (6) are fixedly connected to the top surface of the connection cover (7). Two limit frames (11) are symmetrically installed on the bottom surface of the cross (5), and the insides of the two limit frames (11) are movably connected with a connection seat plate (12), one end of the connection seat plate (12) is fixedly installed to the top surface of the connection cover (7), and the outer surface of the connection cover (7) is provided with two through holes (8).

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