Peanut planting device with adjustable planting spacing

Abstract

This invention relates to the field of planting machinery technology and relates to a peanut planting device with adjustable planting spacing. It addresses the problem of cumbersome plant spacing adjustment in existing peanut planting devices by achieving plant spacing adjustment through a simple structure. The device includes a frame, a seed box, a planting wheel, and a plant spacing adjustment assembly. The assembly includes main planting teeth, secondary planting teeth, a fixed tube, and an adjustment drive mechanism. Multiple fixed tubes are located inside the planting wheel and are evenly arranged circumferentially. One end of each main planting tooth is slidably disposed within the corresponding fixed tube. The sidewall of each main planting tooth has a notch, and the secondary planting tooth is located within the notch and hinged to the main planting tooth via a hinge shaft. The adjustment drive mechanism, located on a support, drives the movement of the main planting teeth relative to the fixed tube. This invention adjusts the length of the main planting teeth extending from the planting wheel by adjusting the drive mechanism, thereby adjusting the distance between the ends of adjacent main planting teeth and thus achieving plant spacing adjustment.

Description

Technical Field

[0001] This invention relates to the field of sowing machinery technology, specifically a peanut sowing device with adjustable sowing spacing. Background Technology

[0002] The emergence of sowing machinery has improved the efficiency of sowing operations. Chinese Patent CN209768179U discloses a peanut sowing device with adjustable plant spacing, including a housing. A first support rod is installed inside the housing, and a second support rod is installed on one side of a connecting plate. A limit block is installed at one end of the second support rod, and a sowing port is installed at the bottom of the housing. This invention uses a first support rod fixedly connected to the housing via a fixing plate to fix the movement trajectory of the drive shaft and the position of the first support rod. The first support rod is movably connected to the drive shaft, and the movement of the drive shaft adjusts the position of the seed container. The seed container is movably connected to the housing, allowing direct adjustment of its position. The seed container is fixedly connected to an operating rod, and its position is controlled by the operating rod. The sowing port penetrates the housing and connects to the seed container, allowing seeds to be conveyed to the sowing port. A hub is movably connected to the first connecting rod via a connecting column, facilitating the movement of the entire device and the seed container. When adjusting the plant spacing of the above-mentioned peanut planting device, it is necessary to move the entire device and the seed container, which is a rather cumbersome operation. Summary of the Invention

[0003] The purpose of this invention is to provide a peanut planting device with adjustable planting spacing, which solves the problem of cumbersome operation of adjusting plant spacing in existing peanut planting devices, and achieves plant spacing adjustment through a simple structure.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: a peanut planting device with adjustable planting spacing, including a frame, a seed box, a planting wheel, and a plant spacing adjustment component. The front end of the frame has a steering wheel, the rear end of the frame has a drive wheel, the top of the frame has a seed box, and the bottom of the frame has a planting wheel frame. The center of the planting wheel has a support member, which includes a first support plate, a connecting shaft, and a second support plate arranged sequentially and fixedly connected. The first and second support plates are rotatably connected to the corresponding end faces of the planting wheel. A support shaft is fixed at the center of the first and second support plates, and sliders are fixed at both ends of the support shaft. The sliders are slidably connected to the planting wheel frame. The planting wheel frame has a planting wheel lifting mechanism that drives the sliders to move up and down. The plant spacing adjustment component includes a main planting tooth, a secondary planting tooth, a fixed tube, and an adjustment drive mechanism. The fixed tube... Multiple fixed tubes are evenly arranged circumferentially inside the seeding wheel. One end of the fixed tube faces the center of the connecting shaft and contacts the outer wall of the connecting shaft. One end of the main seeding tooth is slidably disposed inside the other end of the corresponding fixed tube. The side wall of the main seeding tooth has a notch. The auxiliary seeding tooth is located in the notch and is hinged to the main seeding tooth through a hinge shaft. A torsion spring is provided between the auxiliary seeding tooth and the main seeding tooth. In its natural state, the auxiliary seeding tooth and the main seeding tooth form a closed temporary seed storage cavity. The adjustment drive mechanism is located on the support and is used to drive the main seeding tooth to move relative to the fixed tube. The direction of movement of the main seeding tooth is the radial direction of the seeding wheel. The bottom of the seed box is connected to the inner cavity of the connecting shaft through a seed delivery tube. The side wall of the connecting shaft has a seed leakage hole. The seeds in the seed delivery tube enter the inner cavity of the connecting shaft under gravity and then fall into the corresponding fixed tube through the seed leakage hole.

[0005] Furthermore, the seeding wheel lifting mechanism includes a lifting motor and a vertically arranged lead screw. The lifting motor is fixed to the bottom of the frame. One end of the lead screw is connected to the output end of the lifting motor through a coupling. The other end of the lead screw is threadedly connected to one of the sliders, and the lead screw is rotatably connected to the seeding wheel frame.

[0006] Furthermore, the adjustment drive mechanism includes an adjustment motor, an adjustment gear, and a drive disk. The adjustment motor is fixed to the end face of the second support disk, the adjustment gear is fixed to the output end of the adjustment motor, and the drive disk is rotatably mounted on the connecting shaft. One end face of the drive disk has a ring of external teeth that mesh with the adjustment gear, and the other end face of the drive disk has several drive grooves evenly arranged circumferentially. The arrangement direction of the drive grooves forms an acute angle with the radius of any point of the drive groove. The sidewall of the main seeding tooth has a drive rod that is slidably connected to the drive groove.

[0007] Furthermore, a seeding wheel drive mechanism is provided between the drive wheel and the seeding wheel. The seeding wheel drive mechanism includes a drive box and a drive sprocket, a driven sprocket, a tension wheel, and an elastic connector located within the drive box. The drive box is fixed on the seeding wheel frame. The drive sprocket is coaxially arranged with the drive wheel. The driven sprocket is rotatably mounted on another slider. A connecting plate is fixed to the end face of the seeding wheel. The connecting plate is coaxially arranged with the driven sprocket. An elastic connector is provided between the tension wheel and the drive box. A drive chain is provided between the drive sprocket, the driven sprocket, and the tension wheel.

[0008] Furthermore, the elastic connector includes a guide seat, a slide rod, a tension spring, and a tension wheel frame. The tension wheel is rotatably mounted on the tension wheel frame. The guide seat is fixed to the inner wall of the drive box. One end of the slide rod is fixedly connected to the tension wheel frame, and the other end of the slide rod is slidably connected to the guide seat. The tension spring is located between the guide seat and the tension wheel frame.

[0009] Furthermore, the steering wheels are rotatably mounted on steering wheel frames, one of which is rotatably connected to the frame via a first driven steering shaft, and the other is rotatably connected to the frame via a second driven steering shaft. The frame has a steering assembly that drives the steering wheel frames to rotate in the horizontal plane.

[0010] Furthermore, the steering assembly includes a steering box and a steering motor, a left steering mechanism, and a right steering mechanism located within the steering box. The steering box is fixed to the top of the frame. The output end of the steering motor is fixed with a vertically arranged active steering shaft, which is located between a first driven steering shaft and a second driven steering shaft. Both the left and right steering mechanisms include an upper active steering wheel, a lower active steering wheel, a first driven steering wheel, and a second driven steering wheel. The upper and lower active steering wheels are vertically arranged and fixed to the active steering shaft. The diameter and number of teeth of the first driven steering wheel are greater than those of the second driven steering wheel. The first driven steering wheel of the left steering mechanism and the second driven steering wheel of the right steering mechanism are fixed to the first driven steering shaft. The second driven steering wheel of the left steering mechanism and the first driven steering wheel of the right steering mechanism are fixed on the second driven steering shaft. A steering chain or belt is installed between the upper driving steering wheel, lower driving steering wheel, first driven steering wheel and second driven steering wheel of the left steering mechanism. Another steering chain or belt is installed between the upper driving steering wheel, lower driving steering wheel, first driven steering wheel and second driven steering wheel of the right steering mechanism. When the driven steering wheel of the left steering mechanism rotates counterclockwise with the corresponding driven steering shaft, the driven steering wheel of the right steering mechanism slips with the corresponding driven steering shaft. When the driven steering wheel of the right steering mechanism rotates clockwise with the corresponding driven steering shaft, the driven steering wheel of the left steering mechanism slips with the corresponding driven steering shaft.

[0011] Furthermore, a release gear is fixed at the end of the hinge shaft, located outside the seeding wheel. A release disc is fixed on one of the sliders. The release disc has several internal teeth. During the rotation of the seeding wheel, after the release gear meshes with the internal teeth, the internal teeth drive the release gear to rotate, thereby causing the secondary seeding teeth to separate from the main seeding teeth.

[0012] The beneficial effects of the present invention are: the present invention adjusts the length of the main sowing tooth extending out of the sowing wheel by adjusting the drive mechanism, thereby adjusting the distance between the ends of two adjacent main sowing teeth, and thus realizing the adjustment of the sowing spacing. Attached Figure Description

[0013] Figure 1 This is one of the three-dimensional diagrams of the present invention;

[0014] Figure 2 This is the second three-dimensional diagram of the present invention;

[0015] Figure 3 This is the left view of the present invention;

[0016] Figure 4 This is a top view of the present invention;

[0017] Figure 5 This is a bottom view of the present invention;

[0018] Figure 6 This is the front view of the present invention;

[0019] Figure 7 for Figure 5 AA section view in the middle;

[0020] Figure 8 for Figure 5 BB section view in the middle;

[0021] Figure 9 A three-dimensional diagram of the steering assembly, including the active steering wheel, the first driven steering wheel, and the second driven steering wheel;

[0022] Figure 10 for Figure 9 Side view;

[0023] Figure 11 This is a top view of the left steering mechanism;

[0024] Figure 12 This is a top view of the right steering mechanism;

[0025] Figure 13 Left view of the seeding wheel drive mechanism;

[0026] Figure 14 Left view assembly drawing of the seeding reel and seeding reel lifting mechanism;

[0027] Figure 15 This is a left view of the seeding reel;

[0028] Figure 16 This is a right view of the seeding reel;

[0029] Figure 17 This is a diagram of the internal structure of the seeding reel;

[0030] Figure 18 This is a cross-sectional view of the seeding reel;

[0031] Figure 19 A 3D drawing of the support component;

[0032] Figure 20 This is a side view of the support component;

[0033] Figure 21 This is a diagram illustrating the principle of plant spacing adjustment.

[0034] Figure 22 Left view assembly drawing of the release disc and release gear;

[0035] Figure 23 for Figure 22 Enlarged view of section C in the image;

[0036] In the diagram: 1. Frame; 11. Drive wheel; 12. Drive wheel frame; 13. Steering wheel; 14. Steering wheel frame; 15. Drive motor and gearbox; 16. Transmission box; 17. Transmission mechanism; 18. Steering bearing; 19. Seeding wheel frame; 191. First slide groove; 2. Steering box; 21. Steering motor; 22. Driven steering shaft; 23. First driven steering shaft; 24. Second driven steering shaft; 25. Upper drive steering wheel; 25'. Lower drive steering wheel; 26. First driven steering wheel; 27. Second driven steering wheel; 28. Steering chain or belt; 3. Seeding wheel; 31. First support plate; 32. Second support plate; 33. Seeding wheel bearing; 34. Support shaft; 35. Side hole; 36. Second slide groove; 37. Connecting shaft, 371 Seed leakage hole, 38 Drive disc, 381 External gear, 382 Drive groove, 39 Connecting disc, 4 Adjusting motor, 41 Adjusting gear, 5 Main seeding tooth, 51 Secondary seeding tooth, 52 Fixing tube, 53 Notch, 54 Hinge shaft, 55 Drive rod, 56 Release gear, 6 Seed box, 61 Seed conveying tube, 7 Lifting motor, 71 Lead screw, 72 Support, 73 Slider, 731 Threaded hole, 732 Through hole, 733 Shaft hole, 8 Drive box, 81 Drive sprocket, 82 Driven sprocket, 83 Drive chain, 84 Tensioner, 85 Tensioner bracket, 86 Tensioner spring, 87 Slide rod, 88 Guide seat, 89 Driven sprocket shaft, 9 Release disc, 91 Internal gear. Detailed Implementation

[0037] like Figures 1 to 23As shown, the present invention includes a frame 1, a drive wheel 11, a steering wheel 13, a steering assembly, a seed box 6, a sowing wheel 3, a sowing wheel drive mechanism, a sowing wheel lifting mechanism, and a plant spacing adjustment assembly. The present invention will be described in detail below with reference to the accompanying drawings.

[0038] like Figures 1 to 23 As shown, the peanut planting device with adjustable planting spacing includes a frame 1, a seed box 6, a planting wheel 3, and a plant spacing adjustment assembly. The front end of the frame 1 has a steering wheel 13, and the rear end of the frame 1 has a drive wheel 11. Specifically, as shown... Figures 1 to 3 As shown, the drive wheel 11 is rotatably mounted on the drive wheel frame 12, which is fixed to the bottom of the rear end of the frame 1. A travel drive mechanism is located between the drive wheel 11 and the frame 1, and this mechanism drives the rotation of the drive wheel 11. The travel drive mechanism includes a drive motor, a gearbox 15, and a transmission box 16, as shown... Figure 5 As shown, the drive motor and gearbox 15 are fixed to the bottom of the frame 1. The output shaft of the drive motor and gearbox 15 extends into the transmission box 16, which contains a transmission mechanism 17, such as... Figure 7 As shown, the transmission mechanism 17 connects the output shaft of the drive motor and the transmission 15 to the drive wheel 11. The transmission mechanism 17 can be a chain drive mechanism or a belt drive mechanism. The steering wheel 13 is rotatably mounted on the steering wheel frame 14, as shown. Figures 7 to 9 As shown, one steering wheel carrier 14 is rotatably connected to the frame 1 via a first driven steering shaft 23, and the other steering wheel carrier 14 is rotatably connected to the frame 1 via a second driven steering shaft 24. The frame 1 has a steering assembly that drives the steering wheel carriers 14 to rotate in the horizontal plane. To facilitate the assembly of the first driven steering shaft 23 and the second driven steering shaft 24, as shown... Figure 7 , Figure 8 As shown, a steering bearing 18 is fixed at the bottom of the frame 1. The first driven steering shaft 23 and the second driven steering shaft 24 pass through the steering bearing 18 and are fixedly connected to the inner ring of the steering bearing 18.

[0039] The structure and working principle of the steering component of the present invention are described below:

[0040] like Figures 7 to 12 As shown, the steering assembly includes a steering box 2 and a steering motor 21, a left steering mechanism, and a right steering mechanism located within the steering box 2. The steering box 2 is fixed to the top of the frame 1. The output end of the steering motor 21 is fixed with a vertically arranged active steering shaft 22, and the active steering shaft 22 is located between a first driven steering shaft 23 and a second driven steering shaft 24. Figure 9 , Figure 10As shown, the left and right steering mechanisms are arranged vertically. Each mechanism includes an upper driving steering wheel 25, a lower driving steering wheel 25', a first driven steering wheel 26, and a second driven steering wheel 27. The upper and lower driving steering wheels 25 and 25' are vertically arranged and fixed to the driving steering shaft 22. One upper driving steering wheel 25 and one lower driving steering wheel 25' form a group, and two groups of upper and lower driving steering wheels 25 and 25' are arranged on the driving steering shaft 22. The diameter and number of teeth of the first driven steering wheel 26 are greater than those of the second driven steering wheel 27. The first driven steering wheel 26 of the left steering mechanism and the second driven steering wheel 27 of the right steering mechanism are fixed to the first driven steering shaft 23, and the second driven steering wheel 27 of the left steering mechanism and the first driven steering wheel 26 of the right steering mechanism are fixed to the second driven steering shaft 24. Figure 11As shown, a steering chain or belt 28 is fitted between the upper driving steering wheel 25, the lower driving steering wheel 25′, the first driven steering wheel 26, and the second driven steering wheel 27 of the left steering mechanism. When the steering chain or belt 28 engages with the first driven steering wheel 26, both sides of the steering chain or belt 28 engage with the upper driving steering wheel 25 and the lower driving steering wheel 25′, respectively. Similarly, when the steering chain or belt 28 engages with the second driven steering wheel 27, both sides of the steering chain or belt 28 engage with the upper driving steering wheel 25 and the lower driving steering wheel 25′, respectively. Another steering chain or belt 28 is fitted between the upper driving steering wheel 25, the lower driving steering wheel 25′, the first driven steering wheel 26, and the second driven steering wheel 27 of the right steering mechanism. The steering chain or belt 28 between the upper driving steering wheel 25 and the first driven steering wheel 26 forms a V-shape, and the steering chain or belt 28 between the lower driving steering wheel 25′ and the second driven steering wheel 27 also forms a V-shape. In this way, when the active steering shaft 22 rotates, it drives the upper active steering wheel 25 and the lower active steering wheel 25′ to rotate in the same direction. This, in turn, drives the first driven steering wheel 26 and the second driven steering wheel 27 to rotate in the same direction via the steering chain or belt 28. Ultimately, this drives the first driven steering shaft 23 and the second driven steering shaft 24 to rotate in the same direction, thereby causing the two steering wheel carriers 14 to rotate in the same direction. Because the diameters and tooth counts of the first driven steering wheel 26 and the second driven steering wheel 27 are different, the rotation angles of the two steering wheel carriers 14 are different, thus achieving overall steering. This invention uses the steering motor 21 to drive the active steering shaft 22 to rotate in both directions, thereby achieving left and right steering. When turning left, the left steering mechanism is in the working state, and the right steering mechanism is in the non-working state. When turning right, the left steering mechanism is in the non-working state, and the right steering mechanism is in the working state. To achieve this, the first driven steering wheel 26 and the second driven steering wheel 27 rotate synchronously in one direction with the first driven steering shaft 23, and the first driven steering wheel 26 and the second driven steering wheel 27 also rotate synchronously in one direction with the second driven steering shaft 24. That is, when the driving steering shaft 22 rotates clockwise, the first driven steering wheel 26 of the left steering mechanism rotates counterclockwise with the first driven steering shaft 23, and the second driven steering wheel 27 rotates counterclockwise with the second driven steering shaft 24. Slippage occurs between the second driven steering wheel 27 and the first driven steering shaft 23, and between the first driven steering wheel 26 and the second driven steering shaft 24 of the right steering mechanism. When the driving steering shaft 22 rotates counterclockwise, the second driven steering wheel 27 of the right steering mechanism rotates clockwise with the first driven steering shaft 23, and the first driven steering wheel 26 of the right steering mechanism rotates clockwise with the second driven steering shaft 24. Slippage occurs between the first driven steering wheel 26 and the first driven steering shaft 23 of the left steering mechanism, and slippage occurs between the second driven steering wheel 27 and the second driven steering shaft 24.That is: when the driven steering wheel of the left steering mechanism rotates counterclockwise with the corresponding driven steering shaft, the driven steering wheel of the right steering mechanism slips with the corresponding driven steering shaft; when the driven steering wheel of the right steering mechanism rotates clockwise with the corresponding driven steering shaft, the driven steering wheel of the left steering mechanism slips with the corresponding driven steering shaft.

[0041] like Figure 4 As shown, the top of the frame 1 has a seed box 6, such as Figure 1 As shown, the bottom of the frame 1 has a seeding wheel frame 19, as... Figure 14 As shown, the seeding reel has a support at its center, such as... Figure 19 , Figure 20 As shown, the support includes a first support plate 31, a connecting shaft 37, and a second support plate 32, which are sequentially arranged and fixedly connected. The first support plate 31 and the second support plate 32 are rotatably connected to the corresponding end faces of the seeding wheel 3. Specifically, a circular hole is provided on the end face of the seeding wheel 3, and the first support plate 31 and the second support plate 32 extend into the corresponding circular hole on the end face of the seeding wheel 3. Figure 15 , Figure 16 As shown, a seeding wheel bearing 33 is provided between the first support plate 31 and the inner wall of the circular hole, and between the second support plate 32 and the inner wall of the circular hole. A support shaft 34 is fixed at the center of the first support plate 31 and the second support plate 32, as shown. Figure 8 , Figure 14 As shown, both ends of the support shaft 34 are fixed with sliders 73, which are slidably connected to the seeding wheel frame 19. Therefore, a first groove 191 is provided on the seeding wheel frame 19 to be slidably connected to the sliders 73.

[0042] like Figure 8 , Figure 14 As shown, the seeding wheel frame 19 has a seeding wheel lifting mechanism that drives the slider 73 to move up and down. The seeding wheel lifting mechanism includes a lifting motor 7 and a vertically arranged lead screw 71. The lifting motor 7 is fixed to the bottom of the frame 1. One end of the lead screw 71 is connected to the output end of the lifting motor 7 via a coupling, and the other end of the lead screw 71 is threadedly connected to one of the sliders 73. The lead screw 71 is rotatably connected to the seeding wheel frame 19 via a support 72. Figure 22 As shown, for assembly, a threaded hole 731 is provided on the top of the slider 73, and a shaft hole 733 is provided on the side of the slider 73 to mate with the end of the support shaft 34. The end of the support shaft 34 extends into the shaft hole 733 and is fixedly connected to the slider 73. When the lifting motor 7 is working, it drives the lead screw 71 to rotate, which in turn drives the slider 73 to move up and down, and in turn drives the seeding wheel 3 to move up and down. The seeding wheel lifting mechanism drives the seeding wheel 3 to move up and down, which can adjust the seeding depth.

[0043] like Figures 17 to 20 As shown, the plant spacing adjustment component includes a main sowing tooth 5, a secondary sowing tooth 51, a fixing tube 52, and an adjustment drive mechanism, as follows: Figure 17 , Figure 18 As shown, the fixing tubes 52 are located inside the sowing wheel 3 and are multiple tubes evenly arranged along the circumference. One end of the fixing tube 52 faces the center of the connecting shaft 37 and contacts the outer wall of the connecting shaft 37. One end of the main sowing tooth 5 is slidably disposed in the other end of the corresponding fixing tube 52. The side wall of the main sowing tooth 5 has a notch 53. The auxiliary sowing tooth 51 is located in the notch 53 and is hinged to the main sowing tooth 5 through the hinge shaft 54. A torsion spring is provided between the auxiliary sowing tooth 51 and the main sowing tooth 5. In its natural state, the auxiliary sowing tooth 51 and the main sowing tooth 5 form a closed temporary seed storage cavity. Both the auxiliary sowing tooth 51 and the main sowing tooth 5 are hollow structures with an opening on one side, thus forming a closed temporary seed storage cavity. The adjustment drive mechanism is located on the support and is used to drive the main sowing tooth 5 to move relative to the fixing tube 52. The direction of movement of the main sowing tooth 5 is the radial direction of the sowing wheel 3. Figure 19 , Figure 20 As shown, the adjustment drive mechanism includes an adjustment motor 4, an adjustment gear 41, and a drive disk 38. The adjustment motor 4 is fixed to the end face of the second support disk 32, the adjustment gear 41 is fixed to the output end of the adjustment motor 4, and the drive disk 38 is rotatably mounted on a connecting shaft 37. The connecting shaft 37 passes through the center of the drive disk 38. A ring of external teeth 381 that mesh with the adjustment gear 41 is fixed on one end face of the drive disk 38. The other end face of the drive disk 38 has several drive grooves 382 evenly arranged circumferentially. The arrangement direction of the drive grooves 382 forms an acute angle with the radius of any point of the drive groove 382. Figure 17 As shown, the side wall of the main seeding tooth 5 has a drive rod 55 that is slidably connected to the drive groove 382. After the adjustment motor 4 is started, the adjustment gear 41 rotates accordingly, thereby driving the drive disk 38 to rotate. When the drive disk 38 rotates, the drive groove 382 rotates accordingly, thereby causing the drive rod 55 to move along the length direction of the drive groove 382. As a result, the distance between the drive rod 55 and the center of the seeding wheel 3 changes, and the drive rod 55 moves radially, driving the main seeding tooth 5 to move radially along the seeding wheel 3, thereby adjusting the length of the main seeding tooth 5 extending out of the seeding wheel 3, that is, the position of the main seeding tooth 5 relative to the fixed tube 52. Figure 21 As shown, when the length of the main sowing tooth 5 extending beyond the sowing wheel 3 increases, the distance L between the ends of two adjacent main sowing teeth 5 increases, i.e., L2 is greater than L1. After the seeds are moved out through the ends of the main sowing teeth 5, the sowing spacing / interval increases.

[0044] To drive the rotation of the seeding wheel 3 so that the main seeding teeth 5 can insert into the soil, a seeding wheel drive mechanism is provided between the seeding wheel 3 and the drive wheel 11, which drives the rotation of the seeding wheel 3 via the drive wheel 11. Figure 2 , Figure 7 and Figure 8As shown, the seeding wheel drive mechanism includes a drive box 8 and a driving sprocket 81, a driven sprocket 82, a tensioning wheel 84, and an elastic connecting member located within the drive box 8. The drive box 8 is fixed on the seeding wheel frame 19. The driving sprocket 81 is coaxially arranged with the drive wheel 11. The driven sprocket 82 is rotatably mounted on another slider 73. A connecting disc 39 is fixed to the end face of the seeding wheel 3. The connecting disc 39 is coaxially arranged with the driven sprocket 82. An elastic connecting member is provided between the tensioning wheel 84 and the drive box 8. A drive chain 83 is provided between the driving sprocket 81, the driven sprocket 82, and the tensioning wheel 84. Figure 13 As shown, the elastic connector includes a guide seat 88, a slide rod 87, a tension spring 86, and a tension wheel frame 85. The tension wheel 84 is rotatably mounted on the tension wheel frame 85. The guide seat 88 is fixed to the inner wall of the drive box 8. One end of the slide rod 87 is fixedly connected to the tension wheel frame 85, and the other end of the slide rod 87 is slidably connected to the guide seat 88. The tension spring 86 is located between the guide seat 88 and the tension wheel frame 85. When the tension spring 86 is in a compressed state, it causes the tension wheel 84 to tend to move away from the driven sprocket 82, thereby tensioning the drive chain 83. Since the driven sprocket 82 is fixedly connected to the connecting disc 39, and the connecting disc 39 is fixedly connected to the seeding wheel 3, when the seeding wheel lifting mechanism drives one of the sliders 73 to move up and down along the seeding wheel frame 19, the seeding wheel 3 moves up and down accordingly, and the driven sprocket 82 moves up and down. As a result, the distance between the driven sprocket 82 and the tension wheel 84 decreases or increases. At this time, the tension spring 86 extends or shortens to keep the drive chain 83 in a taut state and adapt to the needs of the seeding wheel 3 moving up and down.

[0045] like Figure 2 As shown, the bottom of the seed box 6 is connected to the inner cavity of the connecting shaft 37 via the seed delivery pipe 61. Therefore, as... Figure 22 As shown, one of the sliders 73 has a through hole 732. The upper end of the seed delivery tube 61 is connected to the seed box 6, and the lower end of the seed delivery tube 61 passes through the through hole 732 and extends into the inner cavity of the connecting shaft 37. Figure 20 As shown, the side wall of the connecting shaft 37 has a seed leakage hole 371. Seeds in the seed delivery tube 61 enter the inner cavity of the connecting shaft 37 under gravity, and then fall through the seed leakage hole 371 into the corresponding fixed tube 52. The seed box 6 has a seed retrieval mechanism, which is existing technology. The seed retrieval mechanism is used to retrieve seeds one by one from the seed box 6 and put them into the seed delivery tube 61.

[0046] To drive the secondary seeding tooth 51 to swing relative to the main seeding tooth 5, thereby causing the secondary seeding tooth 51 to separate from the main seeding tooth 5, so that the seeds in the temporary seed storage cavity fall into the soil, such as... Figure 15 As shown, a release gear 56 located outside the seeding wheel 3 is fixed to the end of the hinge shaft 54, as... Figure 22 As shown, a release disc 9 is fixed on one of the sliders 73, as... Figure 23As shown, the release disc 9 has several internal teeth 91. During the rotation of the seeding wheel 3, the release gear 56 meshes with the internal teeth 91, and the internal teeth 91 drive the release gear 56 to rotate, thereby causing the auxiliary seeding tooth 51 to separate from the main seeding tooth 5.

[0047] The working principle of this invention is described below:

[0048] (1) Add peanut seeds to be sown into the seed box 6; (2) Drive the entire frame 1 to move in the field through the walking drive mechanism. During the movement of the frame 1, the sowing wheel 3 is driven to rotate through the sowing wheel drive mechanism. During the rotation of the sowing wheel 3, the ends of the main sowing tooth 5 and the auxiliary sowing tooth 51 are inserted into the soil in sequence. At the same time, the peanut seeds in the seed box 6 enter the seed delivery tube 61 one by one, and enter the connecting shaft 37 through the seed leakage hole 371, and then enter each fixed tube 52 in sequence; (3) When the main sowing tooth 5 is inserted into the soil and is in a vertical state, the inner tooth 91 just contacts the release gear 56 on the main sowing tooth 5; as the sowing wheel 3 continues to rotate, the inner tooth 91 meshes with the release gear 56 on the main sowing tooth 5, thereby driving the release gear 56 to rotate around the axis of the hinge shaft 54, and then the auxiliary sowing tooth 51 separates from the main sowing tooth 5. (3) When the seed spacing / spacing needs to be adjusted, the main seeding tooth 5 is moved relative to the fixed tube 52 by adjusting the drive mechanism to increase or decrease the length of the main seeding tooth 5 extending out of the seeding wheel 3; (4) When the seeding depth needs to be adjusted, the seeding wheel 3 is moved up and down by the seeding wheel lifting mechanism to adjust the depth of the main seeding tooth 5 extending into the soil, thereby adjusting the seeding depth; When the seeding spacing is adjusted, the seeding depth will also change due to the change in the position between the main seeding tooth 5 and the seeding wheel 3. Therefore, the adjustment of the seeding depth can be carried out in conjunction with the adjustment of the seeding spacing; (5) When the frame 1 needs to turn, the left or right turning mechanism of the turning assembly is activated to drive the turning wheel frame 14 to rotate to the left or to the right, thereby achieving the turning.

[0049] This invention adjusts the length of the main sowing teeth 5 extending beyond the sowing wheel 3 by adjusting the drive mechanism, thereby adjusting the distance between the ends of two adjacent main sowing teeth 5, and thus adjusting the sowing spacing. The sowing wheel 3 is moved up and down by a sowing wheel lifting mechanism, thereby adjusting the sowing depth. Furthermore, the adjustment of the sowing depth can be coordinated with the adjustment of the sowing spacing to meet sowing needs. The sowing wheel drive mechanism includes a tension wheel 84, and the tension wheel 84 and the elastic connecting member are configured to keep the drive chain 83 of the sowing wheel drive mechanism in a taut state, thus meeting the needs of the sowing wheel 3 moving up and down.

Claims

1. Adjustable spacing peanut seeding device, comprising a frame, a seed box, a seeding wheel and a plant spacing adjustment assembly, the front end of the frame is provided with a steering wheel, the rear end of the frame is provided with a drive wheel, the top of the frame is provided with a seed box, and the bottom of the frame is provided with a seeding wheel frame, characterized in that, The center of the seeding wheel is provided with a support, the support comprises a first support disc, a connecting shaft and a second support disc which are sequentially arranged and fixedly connected, the first support disc and the second support disc are rotationally connected with corresponding end faces of the seeding wheel, the center of the first support disc and the second support disc is fixedly provided with a support shaft, both ends of the support shaft are fixedly provided with sliding blocks, the sliding blocks are slidingly connected with the seeding wheel frame in an up-down mode, the seeding wheel frame is provided with a seeding wheel lifting mechanism for driving the sliding blocks to move up and down; the plant spacing adjusting assembly comprises a main seeding tooth, a secondary seeding tooth, a fixed tube and an adjusting driving mechanism, the fixed tube is located in the inside of the seeding wheel and is a plurality of tubes which are uniformly arranged along the circumference, one end of the fixed tube is directed to the center of the connecting shaft and is in contact with the outer wall of the connecting shaft, one end of the main seeding tooth is slidingly arranged in the other end of the corresponding fixed tube, the side wall of the main seeding tooth is provided with a notch, the secondary seeding tooth is located in the notch and is hingedly connected with the main seeding tooth through a hinge shaft, and the secondary seeding tooth and the main seeding tooth are provided with a torsional spring therebetween, the torsional spring is in a natural state so that the secondary seeding tooth and the main seeding tooth enclose a closed temporary seed storage cavity, the adjusting driving mechanism is located on the support for driving the main seeding tooth to move relative to the fixed tube, and the moving direction of the main seeding tooth is the radial direction of the seeding wheel; the bottom of the seed box is communicated with the inner cavity of the connecting shaft through a seed conveying tube, the side wall of the connecting shaft is provided with a seed leakage hole, the seeds in the seed conveying tube fall into the inner cavity of the connecting shaft under the action of gravity, and then fall into the corresponding fixed tube through the seed leakage hole; the adjusting driving mechanism comprises an adjusting motor, an adjusting gear and a driving disc, the adjusting motor is fixed to the end face of the second support disc, the adjusting gear is fixed to the output end of the adjusting motor, the driving disc is rotationally installed on the connecting shaft, one end face of the driving disc is fixedly provided with a ring of external teeth which are engaged with the adjusting gear, the other end face of the driving disc is provided with a plurality of driving grooves which are uniformly arranged along the circumference, the arrangement direction of the driving grooves and the radius of any point of the driving grooves form an acute angle, and the side wall of the main seeding tooth is provided with a driving rod which is slidingly connected with the driving grooves.

2. The adjustable spacing peanut planter of claim 1, wherein, The seeding wheel lifting mechanism comprises a lifting motor and a vertically arranged lead screw, the lifting motor is fixed to the bottom of the frame, one end of the lead screw is connected with the output end of the lifting motor through a shaft coupling, the other end of the lead screw is threadedly connected with one of the sliding blocks, and the lead screw is rotationally connected with the seeding wheel frame.

3. The adjustable spacing peanut planter of claim 1, wherein, The driving wheel and the seeding wheel are provided with a seeding wheel driving mechanism, the seeding wheel driving mechanism comprises a driving box, a driving sprocket, a driven sprocket, a tensioning wheel and an elastic connecting piece which are located in the driving box, the driving box is fixed to the seeding wheel frame, the driving sprocket is coaxially arranged with the driving wheel, the driven sprocket is rotationally installed on the other sliding block, the end face of the seeding wheel is fixedly provided with a connecting disc, the connecting disc is coaxially arranged with the driven sprocket, the tensioning wheel is provided with the elastic connecting piece between the driving box, and the driving sprocket, the driven sprocket and the tensioning wheel are provided with a driving chain therebetween.

4. The adjustable spacing peanut planter of claim 3, wherein, The elastic connecting piece comprises a guide seat, a slide rod, a tension spring and a tension wheel frame, the tension wheel is rotatably installed on the tension wheel frame, the guide seat is fixed on the inner wall of the driving box, one end of the slide rod is fixedly connected with the tension wheel frame, the other end of the slide rod is slidably connected with the guide seat, and the tension spring is located between the guide seat and the tension wheel frame.

5. The adjustable spacing peanut planter of claim 1, wherein, The steering wheels are rotatably installed on steering wheel frames, one of the steering wheel frames is rotatably connected with the frame through a first driven steering shaft, the other steering wheel frame is rotatably connected with the frame through a second driven steering shaft, and the frame is provided with a steering assembly for driving the steering wheel frames to rotate in a horizontal plane.

6. The adjustable spacing peanut planter of claim 5, wherein, The steering assembly comprises a steering box and a steering motor, a left steering mechanism and a right steering mechanism located in the steering box, the steering box is fixed on the top of the frame, the output end of the steering motor is fixed with a vertical driving steering shaft, the driving steering shaft is located between the first driven steering shaft and the second driven steering shaft, the left steering mechanism and the right steering mechanism each comprise an upper driving steering wheel, a lower driving steering wheel, a first driven steering wheel and a second driven steering wheel, the upper driving steering wheel and the lower driving steering wheel are arranged in a vertical mode and are fixed on the driving steering shaft, the first driven steering wheel is larger in diameter and in number of teeth than the second driven steering wheel, the first driven steering wheel of the left steering mechanism and the second driven steering wheel of the right steering mechanism are fixed on the first driven steering shaft, the second driven steering wheel of the left steering mechanism and the first driven steering wheel of the right steering mechanism are fixed on the second driven steering shaft, a steering chain or a steering belt is cooperatively installed between the upper driving steering wheel, the lower driving steering wheel, the first driven steering wheel and the second driven steering wheel of the left steering mechanism, and another steering chain or another steering belt is cooperatively installed between the upper driving steering wheel, the lower driving steering wheel, the first driven steering wheel and the second driven steering wheel of the right steering mechanism; when the driven steering wheels of the left steering mechanism rotate counterclockwise with the corresponding driven steering shafts, the driven steering wheels of the right steering mechanism slip with the corresponding driven steering shafts; when the driven steering wheels of the right steering mechanism rotate clockwise with the corresponding driven steering shafts, the driven steering wheels of the left steering mechanism slip with the corresponding driven steering shafts.

7. The adjustable spacing peanut planter of claim 1, wherein, The hinge shaft end is fixed with a release gear located outside the seeding wheel, one of the sliders is fixed with a release disc, the release disc is provided with a plurality of internal teeth, during the rotation of the seeding wheel, the release gear meshes with the internal teeth, the internal teeth drive the rotation of the release gear, and then the auxiliary seeding teeth are separated from the main seeding teeth.

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