Soil sampling device for agricultural information collection

Abstract

The invention belongs to the field of soil sampling, and particularly relates to a soil sampling device for agricultural information acquisition, which comprises a T-shaped rod, the bottom end of the T-shaped rod is fixedly connected with the top end of a sampling barrel, four groups of sampling grooves are formed in the surface of the sampling barrel, and opening and closing mechanisms are arranged in the sampling grooves. An opening and closing mechanism is arranged in the sampling barrel, the opening and closing mechanism is used for opening and closing the sampling groove, a collecting barrel is arranged in the sampling barrel in a sleeving manner, a pulling mechanism is arranged on the collecting barrel, and the pulling mechanism is used for pulling the collecting barrel to enable the collecting barrel to normally slide in the sampling barrel, so that soil in the collecting barrel can be conveniently taken out; through the structural design of the pulling mechanism, after the collecting barrel is filled with soil, a soil sample in the collecting barrel can be conveyed to the ground only by pulling the collecting barrel upwards and enabling the collecting barrel to slide in the sampling barrel, and the sampling barrel does not need to be pulled out of the soil, so that the sampling process is more labor-saving and convenient.

Description

Technical Field

[0001] The invention relates to the field of soil sampling, in particular to a soil sampling device for collecting agricultural information. Background Art

[0002] Soil carbon storage refers to the total amount of carbon fixed in the soil and is an important indicator of soil quality. By measuring soil carbon storage, we can understand the state of soil fertility and provide a basis for rational fertilization. Before measurement, a sampling device is needed to take out the soil, and then professional instruments are used for measurement.

[0003] According to a soil carbon stock measurement sampling device proposed in patent document CN221426012U, it relates to the technical field of soil sampling devices. A soil carbon stock measurement sampling device comprises a sampling tube, the top of which is fixedly connected with an extension tube, the inner wall of the extension tube is communicated with the inner wall of the sampling tube, a push block is arranged inside the sampling tube, and a soil carbon stock measurement sampling device is provided with a positioning ring and a rubber ring. When sampling the soil, the sampling tube is inserted into the soil, the ground surface blocks the positioning ring, the positioning ring compresses the spring, and the spring is deformed. Then, after the sampling tube is pulled out after the soil sampling is completed, the deformed spring drives the positioning ring and the rubber ring to reset. The rubber ring scrapes the outer surface of the sampling tube during the movement, and scrapes off the soil attached to the outer surface of the sampling tube, which is conducive to preventing the soil from falling into the soil sample and causing a certain degree of pollution to the soil sample.

[0004] However, when the soil sampling device in the above technology samples soil at different depths, due to the limited volume of the sampling tube, after the sampling tube is filled with soil, it is necessary to completely pull the sampling tube out from the sampling point, and only after the soil collected inside is scraped out can the sampling tube be used to continue the sampling operation. The friction between the outside of the sampling tube and the soil is generally large, and it is very difficult to pull out the sampling tube and reinsert the sampling barrel into the sampling point. Therefore, in view of the above problem, a soil sampling device for collecting agricultural information is proposed. Summary of the invention

[0005] In order to solve the problem that the soil sampling device in the above technology has a limited volume of the sampling tube when sampling soil at different depths, after the sampling tube is filled with soil, it is necessary to completely pull the sampling tube out from the sampling point, and scrape out the soil collected inside before using the sampling tube to continue the sampling operation. The friction between the outside of the sampling tube and the soil is generally large, and it is very difficult to pull out the sampling tube and reinsert the sampling barrel into the sampling point. The present invention proposes a soil sampling device for collecting agricultural information.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a soil sampling device for collecting agricultural information described in the present invention comprises a T-shaped rod, the bottom end of the T-shaped rod is fixedly connected to the top end of the sampling tube, four groups of sampling grooves are provided on the surface of the sampling tube, an opening and closing mechanism is provided inside the sampling groove, the opening and closing mechanism is used to open and close the sampling grooves, a collecting tube is sleeved inside the sampling tube, a pulling mechanism is provided on the collecting tube, the pulling mechanism is used to pull the collecting tube so that the collecting tube can slide normally inside the sampling tube to facilitate the removal of soil inside the collecting tube, through grooves are provided on both sides of the collecting tube, a rotating plate is rotatably connected to the inner wall of the through groove, a pushing mechanism is provided on the inner side of the rotating plate, and the pushing mechanism is used to push the rotating plate to rotate to facilitate opening the through groove.

[0007] Preferably, the pulling mechanism includes a movable rod, which is sleeved inside the T-shaped rod, the bottom end of the movable rod is fixedly connected to the top end of the collecting cylinder, the top end of the movable rod is fixedly connected to a top plate, the bottom end of the top plate is fitted with the inner wall of the mounting groove, the mounting groove is opened at the top end of the T-shaped rod, the top end of the top plate is kept horizontal with the top end of the T-shaped rod, and the top end of the top plate is fixedly connected to two sets of handles.

[0008] Preferably, the opening and closing mechanism includes four groups of sealing plates, and the sealing plates are all arc-shaped in design. The sealing plates are slidably connected to the inside of the storage groove, and the storage groove is opened inside the sampling groove. The top of the sealing plate is fixedly connected to the connecting block, and the top of the connecting block is fixedly connected to the top of the sleeve. The sleeve is sleeved on the outside of the T-shaped rod, and the bottom end of the sleeve contacts the top of the sampling tube. The inner wall of the sleeve is provided with two groups of guide grooves, and the inner wall of the guide groove is slidably connected with a protrusion, and the protrusion is fixedly connected to the position of the movable rod near the bottom end, and the protrusion is slidably connected to the inside of the vertical groove, and the vertical groove is opened at the bottom end of the T-shaped rod.

[0009] Preferably, the pushing mechanism includes two groups of arc plates, the bottom ends of the arc plates are fixedly connected to the inner wall of the rotating plate, the two groups of arc plates are respectively meshed with a group of second gears, the second gears are provided with two groups, the second gears are fixedly connected with a first gear, the first gear is meshed with a rack, the top end of the rack is fixedly connected to the connecting plate, the second gear is rotatably connected to the mounting bracket, the mounting bracket is fixedly connected to the top end of the collecting cylinder, the top end of the collecting cylinder is provided with a sliding groove, the sliding groove is arc-shaped, the sliding groove passes through the top end of the collecting cylinder and the pushing block, the bottom end of the pushing block is conical, the top end of the connecting plate is fixedly connected to the bottom end of the sliding rod, the sliding rod is sleeved inside the movable rod, the top end of the sliding rod is sleeved with a spring, the top and bottom ends of the spring are respectively fixedly connected to the fixed block and the sliding rod, and the fixed block is fixedly connected to the inner wall of the movable rod.

[0010] Preferably, the interior of the sealing plate is penetrated by two sets of fixing rings, and the fixing rings are fixedly connected to the interior of the sampling barrel, and the two sets of fixing rings are close to the top and bottom ends of the sampling slot.

[0011] Preferably, the cross-sections of the top and bottom ends of the sliding rod are both T-shaped, the bottom end of the sliding rod passes through a limiting ring, and the limiting ring is fixedly connected to the inner wall of the movable rod.

[0012] Preferably, the sliding groove passes through the collecting tube and the pushing block, the pushing block is fixedly connected to the bottom end of the collecting tube, and the bottom end of the sliding groove provided on the pushing block is fixedly connected to a sealing block.

[0013] Preferably, a slope is provided at the bottom end of the rotating plate, and a groove is provided on the arc-shaped plate.

[0014] Preferably, two groups of connecting columns are fixedly connected to the bottom end of the connecting plate, and the bottom ends of the connecting columns penetrate the collecting cylinder and the pushing block.

[0015] Preferably, two groups of the first gears are provided, and the two groups of the first gears do not contact each other.

[0016] The present invention is beneficial in that: 1. The present invention adopts the structural design of the pulling mechanism. After the collecting cylinder is filled with soil, it only needs to pull the collecting cylinder upwards and let the collecting cylinder slide inside the sampling cylinder, so that the soil sample inside the collecting cylinder can be transported to the ground without pulling the sampling cylinder out of the soil, thereby making the sampling process more labor-saving and convenient, and solving the problem of the soil sampling device in the prior art that when sampling soil at different depths, due to the limited volume of the sampling cylinder, after the sampling cylinder is filled with soil, it is necessary to completely pull the sampling cylinder out of the sampling point, and only after the soil collected inside is scraped out, can the sampling cylinder be used to continue the sampling operation. The friction between the outer side of the sampling cylinder and the soil is generally large, and it is very strenuous to pull out the sampling cylinder and reinsert the sampling barrel into the sampling point.

[0017] 2. The present invention adopts the structural design of the opening and closing mechanism. When the collecting tube slides upward to the maximum height inside the sampling tube, the sealing plate on the sampling tube will be stored in the storage groove, thereby opening the sampling groove and connecting the inside of the sampling tube with the outside world to facilitate the subsequent removal of soil. In the process of sampling the soil by the sampling tube and the collecting tube, the sealing plate can close the sampling groove, thereby preventing the soil from entering the sampling tube from the sampling groove.

[0018] 3. The present invention adopts the structural design of the pushing mechanism. When the collecting tube slides to the maximum height inside the sampling tube, the sliding rod is pressed downward, and the arc plate pushes the rotating plate to rotate outward, thereby opening the through groove, making it easier to take out the soil collected inside the collecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic structural diagram of the top end of the T-shaped rod of the present invention; Figure 4 for Figure 2 A partial enlarged view of the middle A; Figure 5 It is a structural schematic diagram of the sampling tube of the present invention; Figure 6 It is a structural schematic diagram of the collecting tube of the present invention; Figure 7 It is a schematic diagram of the connection structure of the rotating plate of the present invention; Figure 8 It is a schematic diagram of the installation structure of the push block of the present invention; Fig. 9 It is a structural schematic diagram of the top end of the push block of the present invention; Fig.10 It is a structural schematic diagram of the bottom end of the push block of the present invention; Fig.11 It is a schematic diagram of the structure of the T-shaped rod, the movable rod and the sliding rod of the present invention; Fig.12 It is a schematic diagram of the connection structure of the sealing plate of the present invention.

[0021] In the figure: 1, T-shaped rod; 20, mounting groove; 21, movable rod; 22, top plate; 23, handle; 24, sampling tube; 25, collecting tube; 26, through groove; 27, sliding groove; 28, rotating plate; 29, arc plate; 30, groove; 31, mounting frame; 32, first gear; 33, second gear; 34, sealing block; 35, push block; 36, connecting column; 37, connecting plate; 38, rack; 39, sliding rod; 40, spring; 42, fixed block; 43, limiting ring; 44, sampling groove; 45, fixed ring; 46, receiving groove; 47, sleeve; 48, guide groove; 49, connecting block; 50, sealing plate; 51, protrusion; 52, vertical groove. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1 See also Figure 1 - Fig.12 As shown, a soil sampling device for collecting agricultural information comprises a T-shaped rod 1, the bottom end of the T-shaped rod 1 is fixedly connected to the top end of a sampling tube 24, four groups of sampling slots 44 are provided on the surface of the sampling tube 24, an opening and closing mechanism is provided inside the sampling slots 44, the opening and closing mechanism is used to open and close the sampling slots 44, a collecting tube 25 is sleeved inside the sampling tube 24, a pulling mechanism is provided on the collecting tube 25, the pulling mechanism is used to pull the collecting tube 25 so that the collecting tube 25 can slide normally inside the sampling tube 24, so as to take out the soil inside the collecting tube 25, through grooves 26 are provided on both sides of the collecting tube 25, a rotating plate 28 is rotatably connected to the inner wall of the through groove 26, a pushing mechanism is provided on the inner side of the rotating plate 28, the pushing mechanism is used to push the rotating plate 28 to rotate, so as to open the through groove 26; Further, the pulling mechanism includes a movable rod 21, the movable rod 21 is sleeved inside the T-shaped rod 1, the bottom end of the movable rod 21 is fixedly connected to the top end of the collecting tube 25, the top end of the movable rod 21 is fixedly connected to a top plate 22, the bottom end of the top plate 22 is fitted with the inner wall of the mounting groove 20, the mounting groove 20 is opened at the top end of the T-shaped rod 1, the top end of the top plate 22 is kept horizontal with the top end of the T-shaped rod 1, and the top end of the top plate 22 is fixedly connected to two sets of handles 23; Through the structural design of the pulling mechanism, after the collecting tube 25 is filled with soil, it is only necessary to pull the collecting tube 25 upwards and let the collecting tube 25 slide inside the sampling tube 24, so that the soil sample inside the collecting tube 25 can be transported to the ground without pulling the sampling tube 24 out of the soil, thereby making the sampling process more labor-saving and convenient. When working, first insert the sampling tube 24 at the bottom end of the T-shaped rod 1 into the soil, and while holding the T-shaped rod 1, ensure that the top plate 22 is also in contact with the palm to prevent the movable rod 21 from sliding upward during the sampling process, and then sample by rotation. Since the collecting tube 25 is sleeved inside the sampling tube 24, the collected soil will be stored inside the collecting tube 25. At this time, by pulling the movable rod 21 upwards, the movable rod 21 can drive the collecting tube 25 to slide upward inside the sampling tube 24, and the soil sample can be collected. The soil inside the collecting tube 25 can be transported to the top of the sampling tube 24, and the position of the sampling tube 24 inside the soil can remain unchanged, thereby eliminating the operation of extracting the sampling tube 24 and reinserting the sampling tube 24 into the soil. When the sampled soil is deeper, it is only necessary to pull the T-shaped rod 1 upwards so that the sampling slot 44 on the sampling tube 24 is located above the horizontal plane. At this time, there is no need to completely extract the sampling tube 24 from the soil. A top plate 22 is fixed to the top of the movable rod 21, and the top plate 22 is in contact with the inner wall of the mounting groove 20. The contact between the top plate 22 and the inner wall of the mounting groove 20 prevents the movable rod 21 from continuing to move downward inside the T-shaped rod 1. The top of the top plate 22 is kept horizontal with the top of the T-shaped rod 1 for easy holding. Two sets of handles 23 are fixed on the top plate 22 to facilitate pulling the movable rod 21 through the handles 23.

[0024] Further, the opening and closing mechanism includes four groups of sealing plates 50, and the sealing plates 50 are all designed in an arc shape. The sealing plates 50 are slidably connected to the inside of the storage groove 46, and the storage groove 46 is opened inside the sampling groove 44. The top of the sealing plate 50 is fixedly connected to the connecting block 49, and the top of the connecting block 49 is fixedly connected to the top of the sleeve 47. The sleeve 47 is sleeved on the outside of the T-shaped rod 1, and the bottom end of the sleeve 47 contacts the top of the sampling tube 24. The inner wall of the sleeve 47 is provided with two groups of guide grooves 48, and the inner wall of the guide groove 48 is slidably connected with a protrusion 51, and the protrusion 51 is fixedly connected to the position of the movable rod 21 near the bottom end, and the protrusion 51 is slidably connected to the inside of the vertical groove 52, and the vertical groove 52 is opened at the bottom end of the T-shaped rod 1; Through the structural design of the opening and closing mechanism, when the collecting tube 25 slides upward to the maximum height inside the sampling tube 24, the sealing plate 50 on the sampling tube 24 will be stored in the storage groove 46, thereby opening the sampling groove 44 and allowing the inside of the sampling tube 24 to communicate with the outside world, so as to facilitate the subsequent removal of soil. In the process of the sampling tube 24 and the collecting tube 25 sampling the soil, the sealing plate 50 can close the sampling groove 44, thereby preventing the soil from entering the sampling tube 24 from the sampling groove 44. When working, when the movable rod 21 is pulled to allow the collecting tube 25 to slide inside the sampling tube 24, the two sets of protrusions fixed on the bottom end of the movable rod 21 51 will slide in the vertical groove 52, and the protrusion 51 passes through the vertical groove 52 and slides on the inner wall of the guide groove 48. The abutment between the protrusion 51 and the inner wall of the guide groove 48 allows the sleeve 47 to rotate, thereby driving the sealing plate 50 connected to its bottom end to rotate, and the sealing plate 50 will eventually be received inside the receiving groove 46. The sampling groove 44 originally blocked by the sealing plate 50 will be opened to facilitate the subsequent removal of the soil inside the collecting tube 25. When the collecting tube 25 slides upward to the maximum position, the through groove 26 opened on the collecting tube 25 will be aligned with the sampling groove 44 opened on the sampling tube 24, and the size of the sampling groove 44 is larger than the through groove 26.

[0025] Further, the pushing mechanism includes two groups of arc plates 29, the bottom ends of the arc plates 29 are fixedly connected to the inner wall of the rotating plate 28, the two groups of arc plates 29 are respectively meshed with a group of second gears 33, the second gears 33 are provided with two groups, the second gears 33 are fixedly connected with a first gear 32, the first gear 32 is meshed with a rack 38, the top end of the rack 38 is fixedly connected to the connecting plate 37, the second gear 33 is rotatably connected to the mounting frame 31, the mounting frame 31 is fixedly connected to the top end of the collecting cylinder 25, the A sliding groove 27 is provided at the top of the collecting tube 25, and the sliding groove 27 is designed in an arc shape. The sliding groove 27 passes through the top of the collecting tube 25 and the push block 35, and the bottom end of the push block 35 is designed in a conical shape. The top of the connecting plate 37 is fixedly connected to the bottom end of the sliding rod 39, and the sliding rod 39 is sleeved inside the movable rod 21. A spring 40 is sleeved at the top of the sliding rod 39, and the top and bottom ends of the spring 40 are fixedly connected to the fixed block 42 and the sliding rod 39 respectively, and the fixed block 42 is fixedly connected to the inner wall of the movable rod 21; Through the structural design of the pushing mechanism, when the collecting tube 25 slides to the maximum height inside the sampling tube 24, the sliding rod 39 is pressed downward, and the arc plate 29 will push the rotating plate 28 to rotate outward, thereby opening the through slot 26, so as to facilitate the removal of the soil collected inside the collecting tube 25. During operation, when the collecting tube 25 slides upward to the maximum position inside the sampling tube 24, the top of the sliding rod 39 is pressed downward to make the sliding rod 39 slide downward, and the spring 40 fixed on the sliding rod 39 will be stretched. When the bottom end of the sliding rod 39 moves downward, it will drive the connecting plate 37 to move downward, and the two sets of racks fixed on the bottom end of the connecting plate 37 38 will move downward, thereby driving the first gear 32 meshing with the rack 38 to rotate. The first gear 32 is connected to the second gear 33, so it will drive the second gear 33 to rotate on the mounting frame 31. The second gear 33 is meshed with the arc plate 29, so that the arc plate 29 slides along the sliding groove 27. The bottom end of the arc plate 29 is connected to the rotating plate 28, so it will push the rotating plate 28 outward. At this time, the rotating plate 28 can be smoothly unfolded. After the rotating plate 28 is opened, the soil inside the collecting tube 25 can be scraped out and collected through the sampling slot 44, wherein the top end of the sliding rod 39 is connected to the fixed block 42 through the spring 40.

[0026] Furthermore, the interior of the sealing plate 50 is penetrated by two sets of fixing rings 45, and the fixing rings 45 are fixedly connected to the interior of the sampling tube 24, and the two sets of fixing rings 45 are close to the top and bottom ends of the sampling slot 44; During operation, the sealing plate 50 is penetrated by the two sets of fixing rings 45 , so as to ensure the stability of the sealing plate 50 during the sliding process of the sealing plate 50 , so that the sealing plate 50 can be smoothly received in the receiving groove 46 .

[0027] Furthermore, the cross-sections of the top and bottom ends of the sliding rod 39 are both T-shaped, and the bottom end of the sliding rod 39 passes through the limiting ring 43, and the limiting ring 43 is fixedly connected to the inner wall of the movable rod 21; During operation, the bottom end of the sliding rod 39 passes through the limit ring 43 , and the limit ring 43 is used to limit the maximum distance that the sliding rod 39 moves downward, so as to prevent the sliding rod 39 from moving too far, causing the bottom end of the connecting plate 37 to abut against the first gear 32 .

[0028] Furthermore, the sliding groove 27 penetrates the collecting tube 25 and the pushing block 35, the pushing block 35 is fixedly connected to the bottom end of the collecting tube 25, and the bottom end of the sliding groove 27 opened on the pushing block 35 is fixedly connected to a sealing block 34; During operation, the sliding groove 27 is provided on the collecting tube 25 and the pushing block 35 . A sealing block 34 is fixed to the bottom end of the sliding groove 27 provided on the pushing block 35 . The sealing block 34 is used to seal the bottom end of the pushing block 35 to prevent soil from entering the sliding groove 27 .

[0029] Furthermore, the bottom end of the rotating plate 28 is provided with an inclined surface, and the arc plate 29 is provided with a groove 30; During operation, an inclined surface is provided on the bottom end of the rotating plate 28 to ensure that when the rotating plate 28 rotates inside the through slot 26, the bottom end portion of the rotating plate 28 will not abut against the inner wall of the through slot 26, so as to facilitate the smooth opening of the rotating plate 28. A groove 30 is provided on the arc plate 29. The groove 30 enables the arc plate 29 to engage with a set of second gears 33 while not contacting another set of second gears 33 to avoid jamming.

[0030] Embodiment 2 See also Figure 8 and Fig. 9 As shown, Comparative Example 1 is another embodiment of the present invention, the bottom end of the connecting plate 37 is fixedly connected with two groups of connecting columns 36, and the bottom ends of the connecting columns 36 penetrate the collecting cylinder 25 and the pushing block 35; During operation, the connecting column 36 is fixed to the bottom end of the connecting plate 37 , and when the connecting plate 37 moves downward, it can play a guiding role to ensure the stability of the connecting plate 37 moving downward.

[0031] The first gears 32 are provided with two groups, and the two groups of the first gears 32 do not contact each other; During operation, two groups of first gears 32 are provided and the two groups of first gears 32 do not contact each other to avoid friction during rotation.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A soil sampling device for collecting agricultural information, comprising a T-shaped rod (1), the bottom end of the T-shaped rod (1) being fixedly connected to the top end of a sampling tube (24), characterized in that: The surface of the sampling tube (24) is provided with four groups of sampling grooves (44), and an opening and closing mechanism is provided inside the sampling grooves (44). The opening and closing mechanism is used to open and close the sampling grooves (44). The interior of the sampling tube (24) is sleeved with a collecting tube (25), and a pulling mechanism is provided on the collecting tube (25). The pulling mechanism is used to pull the collecting tube (25) so that the collecting tube (25) can slide normally inside the sampling tube (24) so ​​as to take out the soil inside the collecting tube (25). Through grooves (26) are provided on both sides of the collecting tube (25), and the inner wall of the through groove (26) is rotatably connected to a rotating plate (28). The inner side of the rotating plate (28) is provided with a pushing mechanism, and the pushing mechanism is used to push the rotating plate (28) to rotate so as to open the through groove (26).

2. A soil sampling device for collecting agricultural information according to claim 1, characterized in that: The pulling mechanism comprises a movable rod (21), the movable rod (21) being sleeved inside the T-shaped rod (1), the bottom end of the movable rod (21) being fixedly connected to the top end of the collecting barrel (25), the top end of the movable rod (21) being fixedly connected to a top plate (22), the bottom end of the top plate (22) being in contact with the inner wall of a mounting groove (20), the mounting groove (20) being provided at the top end of the T-shaped rod (1), the top end of the top plate (22) being kept horizontal with the top end of the T-shaped rod (1), and the top end of the top plate (22) being fixedly connected to two sets of handles (23).

3. A soil sampling device for collecting agricultural information according to claim 1, characterized in that: The opening and closing mechanism comprises four groups of sealing plates (50), each of which is designed to be arc-shaped. The sealing plates (50) are slidably connected to the inside of a receiving groove (46), and the receiving groove (46) is arranged inside the sampling groove (44). The top of the sealing plate (50) is fixedly connected to a connecting block (49), and the top of the connecting block (49) is fixedly connected to the top of a sleeve (47). The sleeve (47) is sleeved on the outside of the T-shaped rod (1), and the bottom of the sleeve (47) contacts the top of the sampling tube (24). The inner wall of the sleeve (47) is provided with two groups of guide grooves (48), and the inner wall of the guide groove (48) is slidably connected with a protrusion (51), and the protrusion (51) is fixedly connected to a position close to the bottom of the movable rod (21). The protrusion (51) is slidably connected to the inside of a vertical groove (52), and the vertical groove (52) is arranged at the bottom end of the T-shaped rod (1).

4. A soil sampling device for collecting agricultural information according to claim 1, characterized in that: The pushing mechanism comprises two groups of arc-shaped plates (29), the bottom ends of the arc-shaped plates (29) are fixedly connected to the inner wall of the rotating plate (28), the two groups of arc-shaped plates (29) are respectively meshed with a group of second gears (33), two groups of second gears (33) are provided, a first gear (32) is fixedly connected to the second gear (33), the first gear (32) is meshed with a rack (38), the top end of the rack (38) is fixedly connected to the connecting plate (37), the second gear (33) is rotatably connected to the mounting frame (31), the mounting frame (31) is fixedly connected to the top end of the collecting cylinder (25), and the collecting cylinder (25) is fixedly connected to the first gear (32). A sliding groove (27) is provided at the top of the collecting tube (25), and the sliding groove (27) is designed in an arc shape. The sliding groove (27) passes through the top of the collecting tube (25) and the pushing block (35). The bottom end of the pushing block (35) is designed in a conical shape. The top end of the connecting plate (37) is fixedly connected to the bottom end of a sliding rod (39). The sliding rod (39) is sleeved inside the movable rod (21). A spring (40) is sleeved at the top end of the sliding rod (39). The top and bottom ends of the spring (40) are fixedly connected to the fixed block (42) and the sliding rod (39) respectively. The fixed block (42) is fixedly connected to the inner wall of the movable rod (21).

5. The soil sampling device for collecting agricultural information according to claim 3, characterized in that: The interior of the sealing plate (50) is penetrated by two sets of fixing rings (45), and the fixing rings (45) are fixedly connected to the interior of the sampling tube (24). The two sets of fixing rings (45) are close to the top and bottom ends of the sampling slot (44).

6. A soil sampling device for collecting agricultural information according to claim 4, characterized in that: The cross-sections of the top and bottom ends of the sliding rod (39) are both T-shaped, and the bottom end of the sliding rod (39) passes through a limiting ring (43), which is fixedly connected to the inner wall of the movable rod (21).

7. A soil sampling device for collecting agricultural information according to claim 4, characterized in that: The sliding groove (27) passes through the collecting tube (25) and the pushing block (35); the pushing block (35) is fixedly connected to the bottom end of the collecting tube (25); and a sealing block (34) is fixedly connected to the bottom end of the sliding groove (27) provided on the pushing block (35).

8. A soil sampling device for collecting agricultural information according to claim 4, characterized in that: The bottom end of the rotating plate (28) is provided with an inclined surface, and the arc-shaped plate (29) is provided with a groove (30).

9. A soil sampling device for collecting agricultural information according to claim 4, characterized in that: Two groups of connecting columns (36) are fixedly connected to the bottom end of the connecting plate (37), and the bottom ends of the connecting columns (36) penetrate the collecting cylinder (25) and the pushing block (35).

10. A soil sampling device for collecting agricultural information according to claim 4, characterized in that: Two groups of the first gears (32) are provided, and the two groups of the first gears (32) do not contact each other.

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