Soil sampling device for land resource planning and sampling method thereof

Abstract

The invention discloses a soil sampling device for land resource planning and a sampling method thereof, and belongs to the technical field of soil sampling, the soil sampling device comprises a supporting seat fixedly supported above the ground at a sampling position, a stand column is fixedly mounted on the upper surface of the supporting seat, and a top seat is fixedly mounted at the top of the stand column; an adjusting motor is fixedly mounted at the top of the top seat, meanwhile, a threaded rod is fixedly mounted at the output end of the adjusting motor, a movable seat is arranged on the outer side of the stand column, and a sampling barrel is rotationally mounted in the middle of the movable seat. The cutting base is fixedly installed at the lower end of the sampling barrel, the drilling efficiency of the sampling barrel is improved, and a cutting assembly is arranged on the inner side of the cutting base. According to the soil sampling device for land resource planning and the sampling method of the soil sampling device, residual soil dust in previous sampling can be automatically cleaned before sampling, the lower end of sample soil can be segmented, automatic clamping and supporting are conducted, and the sample soil can be completely taken out conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil sampling device for land resource planning and a sampling method thereof. Background Art

[0002] Land resource planning requires research on the land and soil to determine soil properties, moisture, fertility and other related factors for the rational planning and rational use of land resources. In the early stage of exploration, the soil in the planned area is randomly sampled and analyzed, so a soil sampler is needed.

[0003] The prior art (application number: 202011098910.X, Chinese patent with application date of 2020-10-14) discloses a sampling device for soil remediation, including a body with walking wheels, a horizontal and lateral moving mechanism is provided on the body, a telescopic rod is provided on the horizontal and lateral moving mechanism, a sampling mechanism is provided at the telescopic end of the telescopic rod, the outer wall of the rotating outer tube is provided with a spirally wound upward soil feeding fin, and a soil block clamping and anti-detachment mechanism is provided in the sampling inner tube; a driving mechanism for driving the rotating outer tube to rotate is provided on the sampling inner tube, the driving mechanism includes an inner gear ring arranged on the first limiting ring block, a transmission gear meshing with the inner gear ring is provided on the sampling inner tube, and a driving motor connected to the transmission gear is fixed on the connecting rod; the body is provided with a soil surface cleaning mechanism in front of the sampling mechanism. It has the characteristics of complete sampling and good sampling effect, and avoids the phenomenon of soil blocks in the sampling inner tube being detached when the sampling inner tube moves upward; Although the sampling device in the prior art is provided with a clamping and anti-slipping mechanism to clamp the sample, it lacks a splitting mechanism, so that there is still a connection between the lower end of the sample soil and the underground soil. When the sampling device moves upward, the sample soil is easily subjected to tension and slips, thereby making it impossible to achieve complete sampling, and there are certain usage defects. Summary of the invention

[0004] The purpose of the present invention is to provide a soil sampling device for land resource planning and a sampling method thereof, so as to solve the problem raised in the above background technology that the sampling devices currently on the market lack a splitting mechanism, so that there is still a connection between the lower end of the sample soil and the underground soil, so that when the sampling device moves upward, the sample soil is easily subjected to tension and slips, thereby making it impossible to achieve complete sampling.

[0005] To achieve the above object, the present invention provides the following technical solution: a soil sampling device for land resource planning, comprising a support seat fixedly supported above the ground at the sampling location, a column fixedly mounted on the upper surface of the support seat, a top seat fixedly mounted on the top of the column, an adjusting motor fixedly mounted on the top of the top seat, a threaded rod fixedly mounted on the output end of the adjusting motor, a movable seat arranged on the outer side of the column, a sampling barrel rotatably mounted on the middle position of the movable seat; It also includes: a transmission assembly installed between the adjustment motor and the sampling tube to achieve driving drilling of the sampling tube; A cutting seat is fixedly mounted on the lower end of the sampling tube to improve the drilling efficiency of the sampling tube. A cutting assembly is arranged inside the cutting seat to realize the segmentation of the bottom of the sample soil. A lifting ring is installed on the upper outer side of the sampling tube for lifting, and the outer side of the lifting ring is rotatably connected to a movable ring, and the upper end of the movable ring is fixedly connected to a connecting rod, and the upper end of the connecting rod passes through the movable seat and is connected to a top plate, and the middle lower surface of the top plate is connected to a gas delivery assembly; The fixed cylinder is evenly fixed on the upper outer side of the sampling cylinder. The inner side of the fixed cylinder is telescopically connected with a pull rod, and an air storage bag is also arranged on the inner side of the fixed cylinder. The air storage bag is connected to a limiting air bag through a pipeline. At the same time, the limiting air bag is embedded in the inner wall of the sampling cylinder to limit the soil sample.

[0006] Preferably, the movable seat is penetrated by the column and forms a lifting structure with the column, and the movable seat and the threaded rod are threadedly connected, and the movable seat and the supporting seat are arranged in parallel.

[0007] By adopting the above technical solution, the adjustment motor can be started to drive the threaded connection between the threaded rod and the movable seat, so that the movable seat drives the sampling tube above it to be raised and lowered to achieve sampling at different depths.

[0008] Preferably, the transmission assembly includes a gear fixedly mounted on the output end of the driving motor, and the outer side of the gear is meshingly connected with a gear ring, and the gear ring is fixedly mounted on the outer side of the upper end of the sampling cylinder.

[0009] By adopting the above technical solution, when the driving motor drives the gear to rotate, the transmission action of the gear ring can drive the sampling tube to rotate synchronously, so that the sampling tube can use the cutting seat at its lower end to drill the soil.

[0010] Preferably, during the rotation of the sampling tube, the pull rod is telescopically adjusted with the fixed tube under the action of centrifugal force, and a first spring is connected between one end of the pull rod located inside the fixed tube and the inner wall of the fixed tube, and the air storage bag is stretched when the pull rod slides outward.

[0011] By adopting the above technical solution, when the sampling tube rotates, the pull rod can be telescopically adjusted with the fixed tube under the action of centrifugal force, so that the end of the pull rod can stretch the air storage bag, so that the air storage bag can extract part of the gas in the limiting air bag, thereby realizing the adjustment of the volume of the limiting air bag.

[0012] Preferably, the limiting airbag is arranged in an annular structure, and the limiting airbag can clamp and limit the sample inside the sampling tube during its expansion.

[0013] By adopting the above technical solution, the limiting airbag can clamp and fix the sample after expansion and adjustment, avoiding the entire sample from slipping when the sampling tube is lifted, and ensuring the integrity of the sample when it is taken out.

[0014] Preferably, a connecting rod is rotatably connected between the lifting ring and the pull rod, and when the pull rod slides outward, the lifting ring is pulled downward along the outside of the sampling cylinder through the connecting rod, and the gas delivery assembly includes a lifting rod rotatably installed on the lower surface of the top plate, and the lower end of the lifting rod passes through the upper end of the sampling cylinder, and the lower end of the lifting rod is fixedly connected to a piston plate, and the piston plate is interference-slidably installed on the inner side of the sampling cylinder.

[0015] By adopting the above technical solution, when the pull rod pulls the lifting ring downward through the connecting rod, it can drive the top plate to move downward through the movable ring and the connecting rod, so that the top plate drives the piston plate to move downward on the inner side of the sampling cylinder through the lifting rod, thereby realizing the transportation of gas inside the sampling cylinder, thereby blowing out the soil dust remaining inside the sampling cylinder before sampling.

[0016] Preferably, the cutting assembly includes an adjusting ring rotatably installed in the inner cavity of the cutting seat, and the outer wall of the adjusting ring is evenly fixed with a second fixing block, and the inner wall of the cavity of the cutting seat is evenly fixed with a first fixing block, and an adjusting airbag is fixedly connected between the first fixed block and the second fixed block, and the adjusting airbag and the limiting airbag are connected by a pipe.

[0017] By adopting the above technical solution, after the air storage bag expands, part of the gas inside it will also enter the regulating air bag, so that the regulating air bag pushes the second fixed block after expansion, so that the adjusting ring can rotate in the inner cavity of the cutting seat.

[0018] Preferably, the inner wall of the lower end of the cavity of the cutting seat is evenly provided with a first guide groove arranged in an arc shape, and the adjusting ring is evenly provided with a second guide groove, and the positions of the first guide groove and the second guide groove are arranged correspondingly up and down, and an adjusting shaft is slidably arranged between the first guide groove and the second guide groove, a cutting piece is fixedly arranged on the outer side of the adjusting shaft, and a second spring is fixedly connected between the cutting piece and the inner wall of the cutting seat, and limiting holes are evenly provided on the inner side wall of the cutting seat, and the cutting piece and the limiting hole are gap-matched, and an elastic rubber film is connected between the cutting piece and the inner wall of the limiting hole to prevent soil from entering the limiting hole, and when the adjusting ring rotates, the cutting piece is driven to extend along the limiting hole through the adjusting shaft to realize cutting of the lower end of the soil sample.

[0019] By adopting the above technical solution, when the adjusting ring rotates, the cutting blade can be driven to perform telescopic adjustment on the inner side of the limiting hole, so that the cutting blade can cut the lower end of the soil sample to facilitate the subsequent removal of the sample. At the same time, the extended cutting blade can support the soil sample.

[0020] Preferably, the sampling method of the sampling device comprises the following specific steps: S1. Place the support base stably above the ground at the sampling location, then start the driving motor so that the gear at the output end of the driving motor meshes with the gear ring on the outside of the sampling tube, thereby driving the sampling tube to rotate. At this time, the sampling tube will drive the fixed tube and the pull rod to rotate synchronously, so that the pull rod will be telescopically adjusted with the fixed tube under the action of centrifugal force. At this time, the pull rod will pull the lifting ring down on the outside of the sampling tube through the connecting rod, so that the movable ring on the outside of the sampling tube can drive the lifting rod down through the connecting rod and the top plate, so that the piston plate at the lower end of the lifting rod moves down on the inside of the sampling tube, so as to push the gas inside the sampling tube, so that the soil remaining from the last sampling of the sampling tube can be blown out and cleaned. When the control and adjustment motor drives the threaded rod to rotate, the threaded rod and the movable seat are threadedly connected, driving the movable seat to move down, so that the sampling tube on the movable seat can drill into the soil to achieve sampling; S2. When the cutting seat at the lower end of the sampling tube drills to the preset sampling depth, the driving motor is stopped, so that the sampling tube stops rotating. At this time, the pull rod will be reset under the elastic force of the first spring, thereby squeezing the air storage bag, so that part of the gas in the air storage bag enters the limit air bag and the regulating air bag. At this time, the limit air bag can expand to clamp the soil sample to prevent the sample from falling under the action of gravity due to too little friction. At the same time, after the regulating air bag expands, it will push the adjusting ring to rotate through the second fixed block, so that the adjusting ring drives the adjusting shaft to slide along the first guide groove and the second guide groove. At this time, the cutting piece will rotate and extend along the limit hole to achieve the segmentation of the lower end of the sample soil, and at the same time, the lower end of the sample can be supported to facilitate the subsequent lifting of the sample. At the same time, when the pull rod is reset, the top plate will drive the piston piece to move upward on the inner side of the sampling tube, so that there is a negative pressure effect between the sampling tube and the soil sample, further preventing the soil sample from slipping; S3. Control the regulating motor to drive the movable seat to move upward, so that the sampling tube can take the soil sample off the ground, place the collecting device under the sampling tube, and then manually press the top plate to restore the limiting airbag and the regulating airbag. At this time, the limiting airbag and the cutting piece can release the support and limitation of the soil sample, so that the soil sample can be smoothly discharged from the inside of the sampling tube to achieve complete sampling.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the soil sampling device for land resource planning and the sampling method thereof can automatically clean the soil dust remaining from the previous sampling before sampling, and can divide the lower end of the sample soil and automatically clamp and support it, so as to facilitate the complete removal of the sample soil. The specific contents are as follows; 1. A movable seat and a sampling tube are provided. By starting the adjusting motor, the output end of the adjusting motor drives the threaded rod, so that the threaded rod and the movable seat are threadedly connected, and the movable seat is driven to move downward, so that the sampling tube on the movable seat can be drilled into the ground to adjust the sampling depth; 2. A fixed cylinder, a pull rod and a piston plate are provided. As the sampling cylinder rotates, it will drive the fixed cylinder on the outside to rotate synchronously, so that the pull rod on the inside of the fixed cylinder can be telescopically adjusted under the action of centrifugal force, so that the pull rod can drive the lifting ring to move upward through the connecting rod, so that the movable ring drives the lifting rod and the piston plate to move downward through the connecting rod and the top plate, so that the piston plate pushes the gas in the sampling cylinder, and then cleans the residual soil from the last sampling attached to the inner wall of the sampling cylinder; 3. A limit air bag and a cutting blade are provided. When the sampling drilling stops, the pull rod will be reset under the action of the first spring force, thereby squeezing the air bag, so that the gas in the air bag enters the limit air bag and the adjustment air bag. At this time, the limit air bag will expand and stick to the inner side wall of the soil sample. At the same time, the adjustment air bag will expand and push the adjustment ring to rotate, so that the cutting blade can be driven to rotate and extend out in the limit hole, so as to segment and support the lower end of the sample soil, thereby facilitating the subsequent complete removal of the sample soil; Furthermore, as the pull rod is reset, it can drive the lifting ring to move upward and reset, thereby driving the piston plate to move upward on the inner side of the upper end of the sampling tube through the top plate and the lifting rod, so that the air pressure between the sampling tube and the upper end of the soil sample is reduced, achieving negative pressure adsorption of the sample, and further preventing the sample from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the connection structure between the movable seat and the sampling tube of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the movable seat and the sampling tube of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the top view of the cutting seat of the present invention; Figure 8 This is a schematic diagram of the split structure of the cutting seat of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the cutting seat of the present invention.

[0023] In the figure: 1. support seat; 2. column; 3. top seat; 4. adjustment motor; 5. threaded rod; 6. movable seat; 7. drive motor; 8. sampling tube; 9. gear; 10. gear ring; 11. cutting seat; 1101. first fixed block; 1102. first guide groove; 1103. limit hole; 12. lifting ring; 13. fixed tube; 14. pull rod; 15. first spring; 16. air bag; 17. limit air bag; 18. adjustment ring; 1801. second fixed block; 1802. second guide groove; 19. adjustment air bag; 20. cutting disc; 2001. adjustment shaft; 21. second spring; 22. movable ring; 23. connecting rod; 24. connecting rod; 25. top plate; 26. lifting rod; 27. piston disc. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0025] Example 1: Please refer to Figure 1-Figure 5 As shown, the existing soil sampling device is inconvenient to automatically clean the residual soil from the previous sampling attached to the inside before sampling, which makes the sample easily contaminated by mixed materials. In order to solve this technical problem, this embodiment discloses the following technical contents; A soil sampling device for land resource planning, comprising a support base 1 fixedly supported above the ground at a sampling location, a column 2 fixedly mounted on the upper surface of the support base 1, a top seat 3 fixedly mounted on the top of the column 2, an adjusting motor 4 fixedly mounted on the top of the top seat 3, a threaded rod 5 fixedly mounted on the output end of the adjusting motor 4, a movable seat 6 disposed on the outer side of the column 2, a sampling tube 8 rotatably mounted at the middle position of the movable seat 6; It also includes: a transmission assembly, which is installed between the adjustment motor 4 and the sampling tube 8 to achieve the driving drilling of the sampling tube 8; The lifting ring 12 is installed on the upper outer side of the sampling tube 8 for lifting. The outer side of the lifting ring 12 is rotatably connected with a movable ring 22, and the upper end of the movable ring 22 is fixedly connected with a connecting rod 23, and the upper end of the connecting rod 23 passes through the movable seat 6 and is connected with a top plate 25, and the middle lower surface of the top plate 25 is connected with a gas delivery component; The fixed tube 13 is evenly fixed on the upper outer side of the sampling tube 8. The inner side of the fixed tube 13 is telescopically connected with a pull rod 14, and an air storage bag 16 is also provided on the inner side of the fixed tube 13. The air storage bag 16 is connected to a limiting air bag 17 through a pipeline. At the same time, the limiting air bag 17 is embedded in the inner wall of the sampling tube 8 to limit the soil sample.

[0026] The movable seat 6 is penetrated by the column 2 and forms a lifting structure with the column 2, and the movable seat 6 and the threaded rod 5 are threadedly connected, and the movable seat 6 and the supporting seat 1 are arranged in parallel.

[0027] The transmission assembly includes a gear 9 fixedly mounted on the output end of the driving motor 7 , and a gear ring 10 is meshedly connected to the outer side of the gear 9 , and the gear ring 10 is fixedly mounted on the outer side of the upper end of the sampling tube 8 .

[0028] During the rotation of the sampling tube 8, the pull rod 14 is telescopically adjusted with the fixed tube 13 under the action of centrifugal force, and a first spring 15 is connected between one end of the pull rod 14 located inside the fixed tube 13 and the inner wall of the fixed tube 13, and the air storage bag 16 is stretched when the pull rod 14 slides outward.

[0029] A connecting rod 23 is rotatably connected between the lifting ring 12 and the pull rod 14, and when the pull rod 14 slides outward, the lifting ring 12 is pulled downward along the outside of the sampling tube 8 through the connecting rod 23, and the gas delivery assembly includes a lifting rod 26 rotatably installed on the lower surface of the top plate 25, and the lower end of the lifting rod 26 passes through the upper end of the sampling tube 8, and the lower end of the lifting rod 26 is fixedly connected to a piston plate 27, and the piston plate 27 is installed on the inner side of the sampling tube 8 by interference sliding.

[0030] By adopting the above technical solution, the support seat 1 is stably placed above the ground at the sampling location, and then the drive motor 7 is started, so that the gear 9 at the output end of the drive motor 7 and the gear ring 10 on the outside of the sampling tube 8 are meshed and connected, thereby driving the sampling tube 8 to rotate. At this time, the sampling tube 8 will drive the fixed tube 13 and the pull rod 14 to rotate synchronously, so that the pull rod 14 will be telescopically adjusted with the fixed tube 13 under the action of centrifugal force. At this time, the pull rod 14 will pull the lifting ring 12 to move downward on the outside of the sampling tube 8 through the connecting rod 23, so that The movable ring 22 on the outside of the sampling tube 8 can drive the lifting rod 26 to move downward through the connecting rod 24 and the top plate 25, so that the piston piece 27 at the lower end of the lifting rod 26 moves downward on the inner side of the sampling tube 8, thereby pushing the gas inside the sampling tube 8, so that the soil remaining from the last sampling of the sampling tube 8 can be blown out and cleaned. When the control and adjustment motor 4 drives the threaded rod 5 to rotate, the threaded rod 5 and the movable seat 6 are threadedly connected, driving the movable seat 6 to move downward, so that the sampling tube 8 on the movable seat 6 can drill into the soil to achieve sampling.

[0031] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. The existing soil sampling device is inconvenient to split and support the soil end, making it inconvenient to completely remove the soil. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 3-Figure 8 As shown; The cutting seat 11 is fixedly mounted on the lower end of the sampling tube 8 to improve the drilling efficiency of the sampling tube 8. A cutting assembly is arranged inside the cutting seat 11 to realize the segmentation of the bottom of the sample soil. The lifting ring 12 is installed on the upper outer side of the sampling tube 8 for lifting. The outer side of the lifting ring 12 is rotatably connected with a movable ring 22, and the upper end of the movable ring 22 is fixedly connected with a connecting rod 23, and the upper end of the connecting rod 23 passes through the movable seat 6 and is connected with a top plate 25, and the middle lower surface of the top plate 25 is connected with a gas delivery component; The fixed tube 13 is evenly fixed on the upper outer side of the sampling tube 8. The inner side of the fixed tube 13 is telescopically connected with a pull rod 14, and an air storage bag 16 is also provided on the inner side of the fixed tube 13. The air storage bag 16 is connected to a limiting air bag 17 through a pipeline. At the same time, the limiting air bag 17 is embedded in the inner wall of the sampling tube 8 to limit the soil sample.

[0032] The limiting airbag 17 is arranged in an annular structure, and the limiting airbag 17 can clamp and limit the sample inside the sampling tube 8 during its expansion.

[0033] The cutting assembly includes an adjusting ring 18 rotatably installed in the inner cavity of the cutting seat 11, and the outer wall of the adjusting ring 18 is evenly fixed with a second fixing block 1801, and the inner wall of the cavity of the cutting seat 11 is evenly fixed with a first fixing block 1101, and at the same time, an adjusting airbag 19 is fixedly connected between the first fixing block 1101 and the second fixing block 1801, and the adjusting airbag 19 and the limiting airbag 17 are connected by a pipe.

[0034] The inner wall of the lower end of the cavity of the cutting seat 11 is evenly provided with an arc-shaped first guide groove 1102, and the adjusting ring 18 is evenly provided with a second guide groove 1802, and the positions of the first guide groove 1102 and the second guide groove 1802 are correspondingly arranged up and down, and an adjusting shaft 2001 is slidably arranged between the first guide groove 1102 and the second guide groove 1802, a cutting blade 20 is fixedly arranged on the outer side of the adjusting shaft 2001, and a second spring 21 is fixedly connected between the cutting blade 20 and the inner wall of the cutting seat 11, and a limiting hole 1103 is evenly provided on the inner side wall of the cutting seat 11, and the cutting blade 20 and the limiting hole 1103 are clearance-matched, and an elastic film is connected between the cutting blade 20 and the inner wall of the limiting hole 1103 to prevent soil from entering the limiting hole 1103, and when the adjusting ring 18 rotates, the cutting blade 20 is driven to extend along the limiting hole 1103 through the adjusting shaft 2001 to achieve cutting of the lower end of the soil sample.

[0035] By adopting the above technical solution, when the cutting seat 11 at the lower end of the sampling tube 8 drills to the preset sampling depth, the driving motor 7 is stopped, so that the sampling tube 8 stops rotating. At this time, the pull rod 14 will be reset under the elastic force of the first spring 15, thereby squeezing the air storage bag 16, so that part of the gas in the air storage bag 16 enters the limiting air bag 17 and the adjusting air bag 19. At this time, the limiting air bag 17 can expand to clamp the soil sample to prevent the sample from falling under the action of gravity due to too little friction. At the same time, after the adjusting air bag 19 expands, it will push the adjusting ring 18 to rotate through the second fixing block 1801, so that the adjusting ring 18 drives the adjusting shaft 2001 to slide along the first guide groove 1102 and the second guide groove 1802. At this time, the cutting blade 20 will slide along the limiting hole 11 03 rotates and extends out to achieve the segmentation of the lower end of the sample soil, and at the same time, the lower end of the sample can be supported to facilitate the subsequent lifting of the sample. At the same time, when the pull rod 14 is reset, the top plate 25 will drive the piston plate 27 to move upward on the inner side of the sampling tube 8, so that a negative pressure effect is stored between the sampling tube 8 and the soil sample, further preventing the soil sample from slipping; the control adjustment motor 4 drives the movable seat 6 to move upward, so that the sampling tube 8 can take the soil sample off the ground, and the collecting device is placed under the sampling tube 8. Then, the top plate 25 is manually pressed to restore the limiting airbag 17 and the adjusting airbag 19. At this time, the limiting airbag 17 and the cutting piece 20 can release the support and limitation of the soil sample, so that the soil sample can be smoothly discharged from the inner side of the sampling tube 8 to achieve complete sampling.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soil sampling device for land resource planning, comprising a support base (1) fixedly supported above the ground at a sampling location, a column (2) fixedly mounted on the upper surface of the support base (1), a top seat (3) fixedly mounted on the top of the column (2), an adjustment motor (4) fixedly mounted on the top of the top seat (3), a threaded rod (5) fixedly mounted on the output end of the adjustment motor (4), a movable seat (6) disposed on the outer side of the column (2), a sampling tube (8) rotatably mounted in the middle of the movable seat (6); It is characterized in that Also includes: A transmission assembly is installed between the regulating motor (4) and the sampling tube (8) to realize driving and drilling of the sampling tube (8); A cutting seat (11) is fixedly mounted on the lower end of the sampling tube (8) to improve the drilling efficiency of the sampling tube (8); a cutting assembly is provided on the inner side of the cutting seat (11) to achieve segmentation of the bottom of the sample soil; A lifting ring (12) is installed on the upper outer side of the sampling tube (8) in a lifting manner, the outer side of the lifting ring (12) is rotatably connected to a movable ring (22), and the upper end of the movable ring (22) is fixedly connected to a connecting rod (23), and the upper end of the connecting rod (23) passes through the movable seat (6) and is connected to a top plate (25), and the middle lower surface of the top plate (25) is connected to a gas transmission component; The fixed cylinder (13) is evenly fixedly mounted on the upper outer side of the sampling cylinder (8), the inner side of the fixed cylinder (13) is telescopically connected to a pull rod (14), and an air storage bag (16) is also arranged on the inner side of the fixed cylinder (13), and the air storage bag (16) is connected to a limiting air bag (17) through a pipeline, and the limiting air bag (17) is embedded in the inner wall of the sampling cylinder (8) to achieve the limitation of the soil sample.

2. A soil sampling device for land resource planning according to claim 1, characterized in that: The movable seat (6) is penetrated by the column (2) and forms a lifting structure with the column (2), the movable seat (6) and the threaded rod (5) are threadedly connected, and the movable seat (6) and the supporting seat (1) are arranged in parallel.

3. A soil sampling device for land resource planning according to claim 1, characterized in that: The transmission assembly comprises a gear (9) fixedly mounted on the output end of the drive motor (7), and the outer side of the gear (9) is meshingly connected with a gear ring (10), and the gear ring (10) is fixedly mounted on the outer side of the upper end of the sampling tube (8).

4. A soil sampling device for land resource planning according to claim 1, characterized in that: During the rotation of the sampling tube (8), the pull rod (14) is telescopically adjusted with the fixed tube (13) under the action of centrifugal force, and a first spring (15) is connected between one end of the pull rod (14) located inside the fixed tube (13) and the inner wall of the fixed tube (13), and the air storage bag (16) is stretched when the pull rod (14) slides outward.

5. A soil sampling device for land resource planning according to claim 4, characterized in that: The limiting airbag (17) is arranged in an annular structure, and during the expansion process of the limiting airbag (17), the sample inside the sampling tube (8) is clamped and limited.

6. A soil sampling device for land resource planning according to claim 4, characterized in that: A connecting rod (23) is rotatably connected between the lifting ring (12) and the pull rod (14), and when the pull rod (14) slides outward, the lifting ring (12) is pulled downward along the outer side of the sampling tube (8) through the connecting rod (23), and the gas transmission component includes a lifting rod (26) rotatably mounted on the lower surface of the top plate (25), and the lower end of the lifting rod (26) penetrates the upper end of the sampling tube (8), and the lower end of the lifting rod (26) is fixedly connected to a piston plate (27), and the piston plate (27) is installed on the inner side of the sampling tube (8) in an interference sliding manner.

7. A soil sampling device for land resource planning according to claim 1, characterized in that: The cutting assembly comprises an adjusting ring (18) rotatably mounted in an inner cavity of a cutting seat (11), and a second fixing block (1801) is evenly fixedly arranged on an outer wall of the adjusting ring (18), and a first fixing block (1101) is evenly fixedly arranged on an inner wall of the cavity of the cutting seat (11), and an adjusting airbag (19) is fixedly connected between the first fixing block (1101) and the second fixing block (1801), and the adjusting airbag (19) and the limiting airbag (17) are connected via a pipeline.

8. The soil sampling device for land resource planning according to claim 7, characterized in that: The inner wall of the lower end of the cavity of the cutting seat (11) is evenly provided with an arc-shaped first guide groove (1102), and the adjusting ring (18) is evenly provided with a second guide groove (1802), and the positions of the first guide groove (1102) and the second guide groove (1802) are arranged correspondingly up and down, and an adjusting shaft (2001) is slidably arranged between the first guide groove (1102) and the second guide groove (1802), and a cutting blade (20) is fixedly arranged on the outer side of the adjusting shaft (2001), and the cutting blade (20) and the cutting seat ( 11) and the inner wall thereof, a second spring (21) is fixedly connected therebetween, and the inner wall of the cutting seat (11) is evenly provided with limit holes (1103), and the cutting blade (20) and the limit hole (1103) are clearance-matched, and an elastic film is connected between the cutting blade (20) and the inner wall of the limit hole (1103) to prevent soil from entering the limit hole (1103), and when the adjusting ring (18) rotates, the adjusting shaft (2001) drives the cutting blade (20) to extend along the limit hole (1103), thereby realizing the cutting of the lower end of the soil sample.

9. The soil sampling device for land resource planning according to claim 1, characterized in that: A sampling method of the sampling device is also disclosed, and the specific method steps are as follows: S1. Place the support base (1) stably above the ground at the sampling location, then start the drive motor (7) so that the gear (9) at the output end of the drive motor (7) and the gear ring (10) on the outside of the sampling tube (8) are meshed and connected, thereby driving the sampling tube (8) to rotate. At this time, the sampling tube (8) will drive the fixed tube (13) and the pull rod (14) to rotate synchronously, so that the pull rod (14) and the fixed tube (13) can be telescopically adjusted under the action of centrifugal force. At this time, the pull rod (14) will pull the lifting ring (12) through the connecting rod (23) to move downward on the outside of the sampling tube (8), so that the sampling tube ( 8) The outer movable ring (22) can drive the lifting rod (26) to move downward through the connecting rod (24) and the top plate (25), so that the piston plate (27) at the lower end of the lifting rod (26) moves downward on the inner side of the sampling tube (8), so as to push the gas inside the sampling tube (8), so that the soil remaining from the last sampling of the sampling tube (8) can be blown out and cleaned, and when the control and adjustment motor (4) drives the threaded rod (5) to rotate, the threaded rod (5) and the movable seat (6) are threadedly connected, so as to drive the movable seat (6) to move downward, so that the sampling tube (8) on the movable seat (6) can be drilled into the soil to achieve sampling; S2. When the cutting seat (11) at the lower end of the sampling tube (8) drills to the preset sampling depth, the driving motor (7) is stopped, so that the sampling tube (8) stops rotating. At this time, the pull rod (14) is reset under the elastic force of the first spring (15), thereby squeezing the air storage bag (16), so that part of the gas in the air storage bag (16) enters the limiting air bag (17) and the regulating air bag (19). At this time, the limiting air bag (17) can expand to clamp the soil sample to prevent the sample from falling under the action of gravity due to too little friction. At the same time, the regulating air bag (19) will expand and pass through the second fixing block (18). 01) pushing the adjusting ring (18) to rotate, so that the adjusting ring (18) drives the adjusting shaft (2001) to slide along the first guide groove (1102) and the second guide groove (1802), and at this time, the cutting piece (20) will rotate and extend along the limiting hole (1103), so as to segment the lower end of the sample soil, and at the same time support the lower end of the sample to facilitate the subsequent lifting of the sample. At the same time, when the pull rod (14) is reset, the top plate (25) drives the piston plate (27) to move upward on the inner side of the sampling tube (8), so that there is a negative pressure effect between the sampling tube (8) and the soil sample, thereby further preventing the soil sample from slipping; S3, controlling the regulating motor (4) to drive the movable seat (6) to move upward, so that the sampling tube (8) can take the soil sample off the ground, placing the collecting device under the sampling tube (8), and then manually pressing the top plate (25) to restore the limiting airbag (17) and the regulating airbag (19). At this time, the limiting airbag (17) and the cutting piece (20) can release the support and limit of the soil sample, so that the soil sample can be smoothly discharged from the inner side of the sampling tube (8), thereby achieving complete sampling.

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