Agricultural field information collection device for agricultural management

Abstract

This application discloses a farmland information collection device for agricultural management, belonging to the field of farmland information collection technology. It includes a trolley, a mounting frame fixedly installed at the rear of the trolley, an outer sampling cylinder movably mounted on the mounting frame, a drive assembly for driving the rotation and lifting of the outer sampling cylinder, a sampling assembly for retrieving samples, and a control assembly to prevent the trolley from tipping over. The control assembly includes a lead screw rotatably mounted on the mounting frame and a guide rod fixed to the mounting frame. The beneficial effect of this application is that it provides a farmland information collection device for agricultural management. Through the provided outer and inner sampling cylinders, during sampling, the outer sampling cylinder moves downwards to insert into the soil while simultaneously rotating. The serrated edges cut the soil, facilitating soil sampling and preventing the trolley from tipping over due to hard soil.

Description

Technical Field

[0001] This application relates to the field of farmland information collection technology, and more specifically, to a farmland information collection device for agricultural management. Background Technology

[0002] In agricultural management, the collection of farmland information is crucial for agricultural planning and guidance. Existing farmland information collection equipment, including those monitoring soil moisture, pests, and diseases, is collecting data in real time. In particular, farmland soil conditions are closely related to the quality of agricultural products. The extensive use of chemical fertilizers and pesticides in agricultural production has led to increasingly serious soil pollution problems, such as excessive heavy metals and organic pollution. Accurately detecting various indicators in the soil is of great significance for assessing soil quality, ensuring agricultural product safety, and preventing soil pollution. Currently, unmanned equipment is commonly used as the carrier for information collection. For example, drones are used to observe the growth of crops in farmland from the air, and unmanned vehicles are used to inspect farmland. When collecting farmland soil information, soil sampling devices are usually mounted on unmanned vehicles to collect soil samples. Existing soil sampling devices generally use a sampling tube inserted into the soil by a drive structure to collect samples. However, due to the small mass of unmanned vehicles, when the sampling tube is inserted into the soil, it is easy to lift the vehicle when it encounters a hard soil layer, which will affect the sampling effect and may also cause the vehicle to tip over.

[0003] Therefore, there is a need for a farmland information collection device for agricultural management to solve the above problems. Summary of the Invention

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a farmland information collection device for agricultural management, comprising: a trolley, a mounting frame fixedly mounted on the rear of the trolley, an external sampling cylinder movably mounted on the mounting frame, and a drive assembly for driving the external sampling cylinder to rotate and move up and down; a sampling assembly for retrieving samples; and a control assembly to prevent the trolley from tipping over. The control assembly includes: a lead screw rotatably mounted on the mounting frame and a guide rod fixedly mounted on the mounting frame; a movable frame slidably mounted inside the mounting frame; the lead screw and the movable frame being threadedly connected; the guide rod and the movable frame being slidably connected; the external sampling cylinder being movably mounted on the movable frame; a rotating ring rotatably mounted on the mounting frame; the rotating ring slidingly engaging with the external sampling cylinder; and a motor fixedly mounted on the mounting frame, with a drive shaft fixedly connected to the motor's power output end. A second crown-shaped wheel is fixedly mounted at one end of the lead screw, and the upper part of the drive shaft... A first crown-shaped wheel is slidably arranged. The movement of the first crown-shaped wheel causes the first crown-shaped wheel and the second crown-shaped wheel to have a first state of mutual engagement and a second state of disengagement. A support cylinder is fixedly connected to the mounting frame. A sliding cylinder is fixedly connected to the piston rod end of the support cylinder. A fixed tank is fixedly arranged inside the mounting frame. The sliding cylinder passes through the fixed tank and slides and seals with the fixed tank. A through hole is provided on the side wall of the sliding cylinder, which is located inside the fixed tank. A piston rod with one end protruding is slidably arranged inside the fixed tank. One end of the piston rod is fixedly connected to a support foot. A lower ring plate is fixedly connected to the lower end of the sliding cylinder. A support spring is connected between the lower ring plate and the support foot. A control piston cylinder is fixedly connected to the mounting frame. A connecting pipe is provided between the control piston cylinder and the fixed tank. A piston rod is slidably arranged inside the control piston cylinder. A control frame is fixedly connected to one end of the piston rod. A connecting spring is provided between the control frame and the first crown-shaped wheel. The two ends of the connecting spring are respectively fixedly connected to the first crown-shaped wheel and the control frame.

[0006] Furthermore, the drive assembly includes a drive shaft with a transmission wheel fixedly connected to it, the transmission wheel and the rotating ring being connected by a transmission belt, an outer flange fixedly provided at the upper end of the outer sampling cylinder, a connecting ring rotatably provided on the moving frame, a connecting rod fixedly connected to the connecting ring passing through the outer flange and slidingly engaging with the outer flange, a retaining ring fixedly connected to one end of the connecting rod, a pressure spring connected between the connecting ring and the outer flange, the two ends of the pressure spring respectively abutting against the connecting ring and the outer flange, a synchronizing rod fixedly connected to the rotating ring passing through the outer flange and slidingly engaging with the outer flange, a support ring rotatably provided on the mounting frame fixedly connected to one end of the synchronizing rod.

[0007] Furthermore, the sampling assembly includes: an inner sampling cylinder that is sleeved and rotatably disposed inside the outer sampling cylinder; sampling holes that pass through the left and right sides are provided on both the outer sampling cylinder and the guide rod; the sampling holes on the outer sampling cylinder and the sampling holes on the inner sampling cylinder have two states: staggered and overlapping; a limiting flange is fixedly provided on the outer flange; a sliding plate is slidably disposed on the inner sampling cylinder; a limiting block is fixedly connected to the sliding plate; and a limiting groove for the limiting block to be inserted is provided on the limiting flange.

[0008] Furthermore, an installation rod is fixedly installed on the inner sampling cylinder, passing through the sliding plate. The installation rod slides with the sliding plate, and a retaining ring is fixedly connected to one end of the installation rod. A tension spring is installed between the sliding plate and the retaining ring, with the two ends of the tension spring abutting against the sliding plate and the retaining ring, respectively.

[0009] Furthermore, a first guide plate and a second guide plate are fixedly installed on the sliding plate, with a gap between the first guide plate and the second guide plate. An L-shaped rod is slidably installed on the outer flange, with a retaining ring fixedly connected to one end of the L-shaped rod. A return spring is connected between the retaining ring and the outer flange, with both ends of the return spring fixedly connected to the outer flange and the retaining ring, respectively. An abutment bracket is fixedly connected to the upper end of the L-shaped rod, and a crossbar is fixedly connected to the L-shaped rod, with the crossbar located in the gap between the first guide plate and the second guide plate.

[0010] Furthermore, a first cylinder is fixedly installed on the trolley. The first cylinder has a retractable hollow piston rod. One end of the hollow piston rod is located inside the inner sampling cylinder. A sliding rod is slidably installed inside the hollow piston rod. A spring is installed between the hollow piston rod and the sliding rod.

[0011] Furthermore, the lower end of the outer sampling tube is lower than the lower end of the inner sampling tube, and the lower end of the outer sampling tube is provided with edge serrations.

[0012] Furthermore, a sampling cylinder is fixedly installed on the mounting frame, and a connecting plate is fixedly connected to the telescopic end of the sampling cylinder. A sampling pusher corresponding to the sampling hole is provided on the connecting plate. A receiving cylinder is fixedly installed on the opposite side of the sampling cylinder on the mounting frame. A receiving block is fixedly connected to the telescopic end of the receiving cylinder, and a receiving groove corresponding to the connecting plate is opened on the receiving block.

[0013] The beneficial effects of this application are as follows: 1. When sampling, the outer sampling cylinder moves downward to insert into the soil and rotates at the same time. The serrated edge cuts the soil to facilitate soil sampling. When the soil is hard and lifts the trolley, the outer sampling cylinder stops descending. At this time, the pressure spring is in a compressed state and the drive shaft continues to drive the rotating ring to rotate, so that the outer sampling cylinder continues to maintain a certain pressure and continue to rotate and cut.

[0014] 2. Sampling holes are provided on the side walls of both the outer and inner sampling cylinders, and these holes can be either staggered or overlapped. When the sample is inserted into the soil, the sampling holes are staggered to prevent soil leakage during sampling. After sampling, the sampling holes overlap to facilitate sample removal.

[0015] 3. By using the sampling cylinder and receiving cylinder, the extension end of the sampling cylinder extends, allowing the connecting plate to push the soil sample in the outer sampling cylinder through the sampling hole. At the same time, the extension end of the receiving cylinder also extends, causing one side of the receiving block to abut against the outer wall of the outer sampling cylinder, thereby pushing the soil sample into the receiving trough for storage. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram according to one embodiment of the present application; Figure 2 yes Figure 1 An installation diagram of the mounting frame in the embodiment; Figure 3 yes Figure 1 The installation diagram of the external sampling tube in the embodiment described above; Figure 4 yes Figure 1 The installation diagram of the rotating ring in the embodiment is shown below; Figure 5 yes Figure 1 A schematic diagram of the cross-sectional structure of the mounting frame in the embodiment; Figure 6 yes Figure 1 The installation diagram of the mobile frame in the embodiment is shown below; Figure 7 yes Figure 1 The embodiment is shown in the diagram of the installation of the connecting ring; Figure 8 yes Figure 7 A magnified view of a section at point A in the middle; Figure 9 yes Figure 1 Cross-sectional view of the first cylinder in the embodiment; Figure 10 yes Figure 1 A schematic diagram of the abutment frame in the embodiment. Figure 11 yes Figure 1 A schematic diagram of the sliding cylinder in the embodiment; Figure 12 yes Figure 11 A magnified view of a section at point B in the middle.

[0019] Figure label: 10. Trolley; 11. Mounting frame; 12. Outer sampling cylinder; 13. Motor; 14. Drive shaft; 15. Rotating ring; 16. Transmission belt; 17. Transmission wheel; 18. Lead screw; 19. Guide rod; 20. Moving frame; 21. Connecting ring; 22. Outer flange; 23. Connecting rod; 24. Retaining ring; 25. Pressure spring; 26. Synchronizing rod; 27. Control frame; 28. Support ring; 29. ​​Inner sampling cylinder; 30. Sampling hole; 31. Limiting flange; 32. Limiting groove; 33. Sliding plate; 34. Limiting block; 35. Mounting rod; 36. Tension spring; 37. First guide plate; 38. Second guide plate 39. First cylinder; 40. Hollow piston rod; 41. Sliding rod; 42. Push-out plate; 43. Edge serration; 44. Sampling cylinder; 45. Connecting plate; 46. Sampling push head; 47. Receiving cylinder; 48. Receiving block; 49. Receiving groove; 50. L-shaped rod; 51. Support cylinder; 52. Sliding cylinder; 53. Fixed tank; 54. Through hole; 55. Piston rod; 56. Lower ring plate; 57. Support leg; 58. Support spring; 59. Connecting pipe; 60. Control piston cylinder; 61. First crown wheel; 62. Connecting spring; 63. Second crown wheel; 64. Return spring; 65. Abutment frame. Detailed Implementation

[0020] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0021] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0022] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0023] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Reference Figure 1-12 An agricultural management farmland information collection device includes: a trolley 10, a mounting frame 11, an outer sampling tube 12, a motor 13, a drive shaft 14, and a rotating ring 15. The trolley 10 is a conventional agricultural unmanned vehicle. The mounting frame 11 is fixed to the rear end of the trolley 10. The outer sampling tube 12 is movably mounted on the mounting frame 11. An inner sampling tube 29 is fitted inside the outer sampling tube 12 and rotatably mounted thereon. The lower end of the outer sampling tube 12 is lower than the lower end of the inner sampling tube 29, and edge serrations 43 are provided at the lower end of the outer sampling tube 12. When sampling is required, the outer sampling tube 12 moves downwards to insert into the soil while simultaneously rotating. The edge serrations 43 cut the soil to facilitate soil sampling. Specifically, a motor 13 is fixedly mounted on the mounting frame 11. The motor 13 is a servo motor, which can precisely control the number of revolutions in both forward and reverse directions. The power output end of the motor 13 is fixedly connected to a drive shaft 14. A lead screw 18 is rotatably mounted on the mounting frame 11 and is connected to the drive shaft 14. A guide rod 19 is fixedly mounted on the mounting frame 11. A movable frame 20 is provided between the guide rod 19 and the lead screw 18. The movable frame 20 is threadedly connected to the lead screw 18 and slides with the guide rod 19, so that when the lead screw 18 rotates, it can drive the movable frame 20 up and down. The moving frame 20 has a connecting ring 21 rotatably mounted at its lower end. An outer flange 22 is fixedly mounted at the upper edge of the outer sampling cylinder 12. A connecting rod 23, passing through the outer flange 22, is fixedly connected to the connecting ring 21. The outer flange 22 and the connecting rod 23 are in sliding engagement. A pressure spring 25 is connected between the connecting ring 21 and the outer flange 22, with both ends of the pressure spring 25 abutting against the connecting ring 21 and the outer flange 22 respectively. A retaining ring 24 is fixedly connected to one end of the connecting rod 23, limiting the outer flange 22 and preventing the connecting rod 23 from dislodging. When the moving frame 20 moves downwards, it drives the outer flange 22 and the outer sampling cylinder 12 downwards via the connecting ring 21, at which point the pressure spring 25 is compressed.

[0026] A rotating ring 15 is rotatably mounted on the mounting frame 11, and a transmission wheel 17 is fixedly mounted on the drive shaft 14. A transmission belt 16 connects the transmission wheel 17 and the rotating ring 15, transmitting power from the drive shaft 14 to the rotating ring 15, thereby causing the rotating ring 15 to rotate. Two synchronizing rods 26 are fixedly mounted on the rotating ring 15, passing through the outer flange 22. A support ring 28 is fixedly mounted at the lower end of the two synchronizing rods 26, and the support ring 28 is rotatably mounted on the mounting frame 11. When the drive shaft 14 rotates, it drives the lead screw 18 to rotate, which in turn drives the moving frame 20 and the outer sampling cylinder 12 to move downwards for sampling. At the same time, the transmission belt 16 drives the rotating ring 15 to rotate, which in turn drives the outer sampling cylinder 12 to rotate and cut the soil through the edge serrations 43 at the lower end of the outer sampling cylinder 12, facilitating sampling.

[0027] To avoid the hard soil layer causing the outer sampling cylinder 12 to lift the trolley 10 and affect sampling when moving downwards, the following solution is adopted. A second crown wheel 63 is fixed to one end of the lead screw 18, and a first crown wheel 61 is slidably mounted on the drive shaft 14. The movement of the first crown wheel 61 allows for a first state of engagement and a second state of disengagement between the first crown wheel 61 and the second crown wheel 63. In the first state, the drive shaft 14 rotates, driving the lead screw 18 to rotate; in the second state, the drive shaft 14 does not drive the lead screw 18 to rotate. A support cylinder 51 is fixedly connected to the mounting frame 11, and a sliding cylinder 52 is fixedly connected to the piston rod end of the support cylinder 51. A fixed tank 53 is fixedly mounted inside the mounting frame 11, and the sliding cylinder 52 passes through the fixed tank 53 and slides in a sealed manner with the fixed tank 53. A through hole 54 located inside a fixed tank 53 is provided on the side wall of the sliding cylinder 52. A piston rod 55 with one end protruding is slidably installed inside the fixed tank 53. One end of the piston rod 55 is fixedly connected to a support foot 57. A lower ring plate 56 is fixedly connected to the lower end of the sliding cylinder 52. A support spring 58 is connected between the lower ring plate 56 and the support foot 57. When sampling is performed, the piston rod end of the support cylinder 51 extends, thereby driving the sliding cylinder 52 to move, causing the piston rod 55 and the support foot 57 to move downward, so that the support foot 57 contacts and supports the ground until the support spring 58 is compressed. It should be noted that both the fixed tank 53 and the sliding cylinder 52 are filled with hydraulic oil.

[0028] A control piston cylinder 60 is fixedly connected inside the mounting frame 11. A connecting pipe 59 connects the control piston cylinder 60 to the fixed tank 53. A piston rod is slidably mounted inside the control piston cylinder 60. A control frame 27 is fixedly connected to one end of the piston rod. A connecting spring 62 is provided between the control frame 27 and the first crown wheel 61. The two ends of the connecting spring 62 are respectively fixedly connected to the first crown wheel 61 and the control frame 27. The first crown wheel 61 rotates synchronously with the drive shaft 14. When the support spring 58 is compressed, the piston rod 55 pushes the hydraulic oil in the sliding cylinder 52 into the control piston cylinder 60 through the connecting pipe 59, thereby causing the piston rod end of the control piston cylinder 60 to extend, driving the control frame 27 to move downward, causing the first crown wheel 61 to move from the first state to the second state, at which time it can drive the lead screw 18 to rotate. When the soil is hard, the trolley 10 is lifted. Under the action of the support spring 58, the piston rod 55 and the sliding cylinder 52 will move relative to each other, thereby drawing the hydraulic oil back into the sliding cylinder 52. This causes the first crown wheel 61 to move from the first state to the second state, no longer driving the lead screw 18 to rotate, and the outer sampling cylinder 12 no longer descends. At this time, since the pressure spring 25 is in a compressed state and the drive shaft 14 continues to drive the rotating ring 15 to rotate, the outer sampling cylinder 12 continues to maintain a certain pressure and continue to rotate and cut, cutting the harder soil layer. It should be noted that a position sensor (not shown in the figure) is also provided on the mounting frame 11, and a corresponding detection block is provided on the moving frame 20. When the keyway of the position sensor reaches the detection block, the outer sampling cylinder 12 moves to the lowest position. The position sensor and the detection block are existing technologies and will not be described in detail. After sampling is completed, the motor 13 outputs power in the reverse direction to drive the outer sampling cylinder 12 to rise. It should be noted that the uppermost end of the lead screw 18 is a no-travel section. When the lead screw 18 moves to the uppermost position, the lead screw 18 continues to rotate in the reverse direction and the moving frame 20 no longer moves.

[0029] To facilitate soil sampling from different soil layers, the following scheme is adopted. Sampling holes 30 are provided on the side walls of the outer sampling cylinder 12 and the inner sampling cylinder 29, and these holes have two states: staggered and overlapping. When the sample is inserted into the soil, the sampling holes 30 are in the staggered state to prevent soil leakage during sampling. After sampling is completed, the sampling holes 30 overlap, facilitating sample removal.

[0030] A sampling cylinder 44 is fixedly mounted on the mounting frame 11. A connecting plate 45 is fixedly connected to the telescopic end of the sampling cylinder 44. A sampling pusher 46 corresponding to the sampling hole 30 is provided on the connecting plate 45. A receiving cylinder 47 is fixedly mounted on the opposite side of the sampling cylinder 44 on the mounting frame 11. A receiving block 48 is fixedly connected to the telescopic end of the receiving cylinder 47. A receiving groove 49 corresponding to the connecting plate 45 is opened on the receiving block 48. After sampling is completed, the outer sampling cylinder 12 moves to the uppermost position, so that the sampling hole 30 is directly opposite the sampling pusher 46, and the sampling holes 30 also overlap. As the sampling cylinder 44 extends, the connecting plate 45 pushes the soil sample in the outer sampling cylinder 12 through the sampling hole 30. At the same time, the receiving cylinder 47 also extends, so that one side of the receiving block 48 is attached to the outer wall of the outer sampling cylinder 12, thereby pushing the soil sample into the receiving trough 49 for storage. It should be noted that there are multiple receiving cylinders 47 distributed along the axis of the outer sampling cylinder 12, which can sample samples from multiple soil layers.

[0031] To prevent relative rotation between the outer sampling cylinder 12 and the inner sampling cylinder 29 when they are inserted downwards into the soil layer or pulled out in opposite directions, which could cause the sampling holes 30 to overlap and leak soil, the following solution is adopted. A limiting flange 31 is fixedly installed on the outer flange 22, and a sliding plate 33 is slidably installed on the inner sampling cylinder 29. The sliding plate 33 is fixedly connected to a limiting block 34, and a limiting groove 32 is provided on the limiting flange 31 for the limiting block 34 to be inserted. When the outer sampling cylinder 12 moves downwards to take samples, the limiting block 34 is inserted into the limiting groove 32, fixing the outer sampling cylinder 12 and the inner sampling cylinder 29 relatively and preventing rotation. When the outer sampling cylinder 12 moves to the uppermost side, the limiting block 34 disengages from the limiting groove 32, allowing the outer sampling cylinder 12 and the inner sampling cylinder 29 to be adjusted from a state where the sampling holes 30 do not overlap to a state where the sampling holes 30 overlap.

[0032] Specifically, a first guide plate 37 and a second guide plate 38 are fixedly installed on the sliding plate 33, with a gap between the first guide plate 37 and the second guide plate 38. An L-shaped rod 50 is slidably installed on the outer flange 22, with a retaining ring fixedly connected to one end of the L-shaped rod 50. A return spring 64 is connected between the retaining ring and the outer flange 22, with both ends of the return spring 64 fixedly connected to the outer flange 22 and the retaining ring, respectively. An abutment bracket 65 is fixedly connected to the upper end of the L-shaped rod 50, and a crossbar is fixedly connected to the L-shaped rod 50, with the crossbar located in the gap between the first guide plate 37 and the second guide plate 38. Both the first guide plate 37 and the second guide plate 38 are arranged at an angle. It can be understood that when the outer sampling cylinder 12 moves upward after sampling, when it reaches the uppermost side, the abutment frame 65 will abut against the lower end of the rotating ring 15, thereby stretching the return spring 64. Initially, due to the action of the limiting block 34, the outer sampling cylinder 12 and the inner sampling cylinder 29 will not rotate relative to each other, so that the crossbar of the L-shaped rod 50 will contact the second guide plate 38 and push the second guide plate 38 and the sliding plate 33 to move, causing the tension spring 36 to stretch. When the limiting block 34 disengages from the limiting groove 32, the outer sampling cylinder 12 will push the inclined second guide plate 38, thereby causing the inner sampling cylinder 29 and the outer sampling cylinder 12 to rotate relative to each other, so that the sampling hole 30 coincides, which facilitates the subsequent removal of the sample.

[0033] A first cylinder 39 is also fixedly installed on the mounting frame 11. The first cylinder 39 has a telescopically oriented hollow piston rod 40. One end of the hollow piston rod 40 is located inside the inner sampling cylinder 29. A sliding rod 41 is slidably arranged inside the hollow piston rod 40. A spring is connected between the hollow piston rod 40 and the sliding rod 41. When the outer sampling cylinder 12 moves downward, it drives the ejection plate 42 and the sliding rod 41 to move, thereby stretching the spring. When the outer sampling cylinder 12 is at its uppermost position and soil needs to be ejected, the first cylinder 39 extends, driving the hollow piston rod 40 and the ejection plate 42 to move, thus ejecting the soil from the lower end.

[0034] Work or installation process: 1. When sampling is required, the motor 13 is started to output power, which drives the drive shaft 14 to rotate forward, thereby driving the outer sampling cylinder 12 to move downward and insert into the soil while rotating simultaneously. The soil is cut by the edge serrations 43 to facilitate soil insertion for sampling. When the lead screw 18 rotates, it can drive the moving frame 20 to move up and down. The lower end of the moving frame 20 is rotatably provided with a connecting ring 21. An outer flange 22 is fixedly provided at the upper edge of the outer sampling cylinder 12. A connecting rod 23 passing through the outer flange 22 is fixedly connected to the connecting ring 21. The outer flange 22 and the connecting rod 23 are slidably engaged. A pressure spring 25 is connected between the connecting ring 21 and the outer flange 22. The two ends of the pressure spring 25 abut against the connecting ring 21 and the outer flange 22 respectively. A retaining ring 24 is fixedly connected to one end of the connecting rod 23. The retaining ring 24 limits the outer flange 22 to prevent the connecting rod 23 from coming off. When the moving frame 20 moves downward, it will drive the outer flange 22 and the outer sampling cylinder 12 to move downward through the connecting ring 21. At this time, the pressure spring 25 will be compressed.

[0035] 2. When the drive shaft 14 rotates, it drives the lead screw 18 to rotate, which in turn drives the moving frame 20 and the outer sampling cylinder 12 to move downward to take samples. At the same time, the drive belt 16 drives the rotating ring 15 to rotate, which in turn drives the outer sampling cylinder 12 to rotate and cut the soil through the edge serration 43 at the lower end of the outer sampling cylinder 12, which facilitates sampling.

[0036] 3. When sampling, the piston rod end of the support cylinder 51 extends, thereby driving the sliding cylinder 52 to move, causing the piston rod 55 and the support leg 57 to move downward, so that the support leg 57 contacts and supports the ground until the support spring 58 is compressed.

[0037] 4. When the support spring 58 is compressed, the piston rod 55 pushes the hydraulic oil in the sliding cylinder 52 into the control piston cylinder 60 through the connecting pipe 59, thereby causing the piston rod end of the control piston cylinder 60 to extend and drive the control frame 27 to move downward, so that the first crown wheel 61 moves from the first state to the second state, which can drive the lead screw 18 to rotate. When the soil is hard and the trolley 10 is lifted, the piston rod 55 will move relative to the sliding cylinder 52 under the action of the support spring 58, thereby drawing the hydraulic oil back into the sliding cylinder 52, so that the first crown wheel 61 moves from the first state to the second state, no longer driving the lead screw 18 to rotate, and the outer sampling cylinder 12 will no longer descend. At this time, since the pressure spring 25 is in a compressed state and the drive shaft 14 continues to drive the rotating ring 15 to rotate, the outer sampling cylinder 12 continues to maintain a certain pressure and continues to rotate and cut, cutting the harder soil layer.

[0038] 5. After sampling is completed, control motor 13 to reverse drive shaft 14 by the same number of revolutions, and the outer sampling cylinder 12 moves to its uppermost position, so that sampling hole 30 is directly opposite sampling push head 46, and the sampling holes 30 also overlap. The extension end of sampling cylinder 44 extends, so that connecting plate 45 pushes the soil sample in outer sampling cylinder 12 through sampling hole 30. At the same time, the extension end of receiving cylinder 47 also extends, so that one side of receiving block 48 is against the outer wall of outer sampling cylinder 12, thereby pushing the soil sample into receiving trough 49 for storage. It should be noted that there are multiple receiving cylinders 47 distributed along the axis of outer sampling cylinder 12, which can sample samples from multiple soil layers.

[0039] 6. When the outer sampling cylinder 12 moves downward to take a sample, the limiting block 34 is embedded in the limiting groove 32, which fixes the outer sampling cylinder 12 and the inner sampling cylinder 29 relatively and prevents them from rotating. When the outer sampling cylinder 12 moves to the uppermost position, the limiting block 34 disengages from the limiting groove 32, allowing the outer sampling cylinder 12 and the inner sampling cylinder 29 to adjust from a state where the sampling holes 30 do not overlap to a state where the sampling holes 30 overlap. After the outer sampling cylinder 12 completes sampling, it moves upward. When it reaches the uppermost position, the abutment frame 65 abuts against the lower end of the rotating ring 15, thereby stretching the return spring 64. Initially, due to the action of the limiting block 34, the outer sampling cylinder 12 and the inner sampling cylinder 29 do not rotate relative to each other, causing the crossbar of the L-shaped rod 50 to contact the second guide plate 38 and push the second guide plate 38 and the sliding plate 33 to move, causing the tension spring 36 to stretch. After the limiting block 34 disengages from the limiting groove 32, the outer sampling cylinder 12 pushes the inclined second guide plate 38, thereby causing the inner sampling cylinder 29 and the outer sampling cylinder 12 to rotate relative to each other, so that the sampling holes 30 overlap, facilitating the subsequent removal of samples.

[0040] 7. As the outer sampling cylinder 12 moves downward, it will drive the push plate 42 and the sliding rod 41 to move, thereby stretching the spring. When the outer sampling cylinder 12 is at the top and needs to push out the soil, it will extend through the first cylinder 39.

[0041] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. An agricultural field information collection device for agricultural management, comprising: The trolley (10) has a mounting frame (11) fixedly installed on its rear side, characterized in that: An external sampling cylinder (12) is movably mounted on the mounting frame (11), as well as a drive assembly for driving the external sampling cylinder (12) to rotate and lift. The sampling component that removes the sample; Control components to prevent the trolley (10) from tipping over; The control component includes: a lead screw (18) rotatably mounted on the mounting frame (11) and a guide rod (19) fixed on the mounting frame (11); a movable frame (20) is slidably mounted inside the mounting frame (11); the lead screw (18) is threadedly connected to the movable frame (20); the guide rod (19) is slidably connected to the movable frame (20); and the outer sampling cylinder (12) is movably mounted on the movable frame (20), which drives the outer sampling cylinder (12) to move up and down. A rotating ring (15) is rotatably provided on the mounting frame (11). The rotating ring (15) is slidably engaged with the outer sampling cylinder (12). The rotating ring (15) drives the outer sampling cylinder (12) to rotate. A motor (13) is fixedly mounted on a mounting frame (11). The power output end of the motor (13) is fixedly connected to a drive shaft (14). A second crown wheel (63) is fixed at one end of the lead screw (18). A first crown wheel (61) is slidably mounted on the drive shaft (14). The movement of the first crown wheel (61) causes the first crown wheel (61) and the second crown wheel (63) to have a first state of mutual cooperation and a second state of discooperation. A support cylinder (51) is fixedly connected to the mounting frame (11). A sliding cylinder (52) is fixedly connected to the piston rod end of the support cylinder (51). A fixed tank (53) is fixedly installed inside the mounting frame (11). The sliding cylinder (52) passes through the fixed tank (53) and slides and seals with the fixed tank (53). A through hole (54) is provided on the side wall of the sliding cylinder (52) inside the fixed tank (53). A piston rod (55) with one end protruding is slidably installed inside the fixed tank (53). A support foot (57) is fixedly connected to one end of the piston rod (55). A lower ring plate is fixedly connected to the lower end of the sliding cylinder (52). (56) A support spring (58) is provided between the lower ring plate (56) and the support leg (57). A control piston cylinder (60) is fixedly connected inside the mounting frame (11). A connecting pipe (59) is provided between the control piston cylinder (60) and the fixed tank (53). A piston rod is slidably provided inside the control piston cylinder (60). A control frame (27) is fixedly connected to one end of the piston rod. A connecting spring (62) is provided between the control frame (27) and the first crown wheel (61). The two ends of the connecting spring (62) are fixedly connected to the first crown wheel (61) and the control frame (27) respectively.

2. The farmland information collection device for agricultural management according to claim 1, characterized in that: The drive assembly includes a drive shaft (14) with a drive wheel (17) fixedly connected to it. The drive wheel (17) and the rotating ring (15) are connected by a drive belt (16). An outer flange (22) is fixedly provided on the upper end of the outer sampling cylinder (12). A connecting ring (21) is rotatably provided on the moving frame (20). A connecting rod (23) is fixedly connected to the connecting ring (21), passing through the outer flange (22) and slidingly engaging with the outer flange (22). A retaining ring (24) is fixedly connected to one end. A pressure spring (25) is connected between the connecting ring (21) and the outer flange (22). The two ends of the pressure spring (25) abut against the connecting ring (21) and the outer flange (22) respectively. A synchronizing rod (26) is fixedly connected to the rotating ring (15), passing through the outer flange (22) and slidingly engaging with the outer flange (22). A support ring (28) is fixedly connected to one end of the synchronizing rod (26) and rotatably mounted on the mounting frame (11).

3. The farmland information collection device for agricultural management according to claim 2, characterized in that: The sampling assembly includes: an inner sampling cylinder (29) which is sleeved and rotatably disposed inside the outer sampling cylinder (12); sampling holes (30) that pass through the left and right sides are provided on both the outer sampling cylinder (12) and the guide rod (19); the sampling holes (30) on the outer sampling cylinder (12) and the sampling holes (30) on the inner sampling cylinder (29) have two states: staggered and overlapping; a limiting flange (31) is fixedly disposed on the outer flange (22); a sliding plate (33) is slidably disposed on the inner sampling cylinder (29); a limiting block (34) is fixedly connected to the sliding plate (33); and a limiting groove (32) for the limiting block (34) to be embedded is provided on the limiting flange (31).

4. The farmland information collection device for agricultural management according to claim 3, characterized in that: An installation rod (35) passing through a sliding plate (33) is fixedly installed on the inner sampling cylinder (29). The installation rod (35) slides with the sliding plate (33). A retaining ring is fixedly connected to one end of the installation rod (35). A tension spring (36) is provided between the sliding plate (33) and the retaining ring. The two ends of the tension spring (36) abut against the sliding plate (33) and the retaining ring, respectively.

5. The farmland information collection device for agricultural management according to claim 4, characterized in that: The sliding plate (33) is also fixedly provided with a first guide plate (37) and a second guide plate (38), and there is a gap between the first guide plate (37) and the second guide plate (38). An L-shaped rod (50) is slidably provided on the outer flange (22). A retaining ring is fixedly connected to one end of the L-shaped rod (50). A return spring (64) is connected between the retaining ring and the outer flange (22). The two ends of the return spring (64) are fixedly connected to the outer flange (22) and the retaining ring, respectively. An abutment frame (65) is fixedly connected to the upper end of the L-shaped rod (50). A crossbar is also fixedly connected to the L-shaped rod (50), and the crossbar is located in the gap between the first guide plate (37) and the second guide plate (38).

6. The farmland information collection device for agricultural management according to claim 5, characterized in that: A first cylinder (39) is fixedly installed on the mounting frame (11). The first cylinder (39) has a retractable hollow piston rod (40). One end of the hollow piston rod (40) is located inside the inner sampling cylinder (29). A sliding rod (41) is slidably installed inside the hollow piston rod (40). A spring is connected between the hollow piston rod (40) and the sliding rod (41).

7. The farmland information collection device for agricultural management according to claim 6, characterized in that: The lower end of the outer sampling tube (12) is lower than the lower end of the inner sampling tube (29), and edge serrations (43) are provided at the lower end of the outer sampling tube (12).

8. The farmland information collection device for agricultural management according to claim 7, characterized in that: A sampling cylinder (44) is fixedly installed on the mounting frame (11). A connecting plate (45) is fixedly connected to the telescopic end of the sampling cylinder (44). A sampling pusher (46) corresponding to the sampling hole (30) is provided on the connecting plate (45). A receiving cylinder (47) is fixedly installed on the opposite side of the sampling cylinder (44) on the mounting frame (11). A receiving block (48) is fixedly connected to the telescopic end of the receiving cylinder (47). A receiving groove (49) corresponding to the connecting plate (45) is opened on the receiving block (48).

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