Precise seed-metering device with adjustable plant spacing

Abstract

The utility model belongs to the technical field of seed-metering devices, and discloses a precise seed-metering device with adjustable plant spacing. Comprising a three-point suspension device, a rack connected with the three-point suspension device, a seed-metering device installed on the rack, a seed box installed on the seed-metering device, a gearbox installed on the rack, a seed-metering hose with one end connected with the seed-metering device and a furrow opener connected with the other end of the seed-metering hose, a sliding rail is arranged on the machine frame, a sliding block is arranged on the sliding rail in a sliding mode, the sliding block is connected with the fixing rod in a sliding mode, a fixing bolt used for limiting the seed-metering device in the horizontal direction is arranged on the sliding block, and a limiting assembly used for limiting the seed-metering device in the vertical direction is arranged on the sliding block. The furrow opener has the effect of improving the stability of the furrow opener in the vertical direction.

Description

Technical Field

[0001] This utility model relates to the field of seed metering technology, and in particular to a precision seed metering device with adjustable plant spacing. Background Technology

[0002] my country ranks first in the world in both vegetable production and sales. In recent years, my country's vegetable industry has developed rapidly, with planting area and output continuously increasing. It has now surpassed grain to become my country's largest agricultural product. However, the mechanization rate of vegetable sowing is still low. Most farmers still use broadcasting, which is labor-intensive and inefficient, hindering large-scale and standardized development, and causing fluctuations in vegetable supply and prices. Vegetable seeds are small and light, and different types of vegetable seeds vary in shape and size. Existing vegetable seeders have poor versatility. The key to reducing farmers' costs and improving sowing efficiency is to find a single seeder that can sow different types of vegetable seeds.

[0003] Chinese utility model patent CN213991638U discloses an adjustable vegetable planter for precision sowing of vegetable seeds, belonging to the field of agricultural machinery research. It includes an electric tractor, a three-point suspension device, a frame, a seed box, a seed metering device, a chain, a gearbox, ground wheels, a seed metering hose, a furrow opener, a slider I, a slide rail I, a fixing bolt I, a fixing bolt II, a seed metering box, a brush seed scraper, an inner seed protection plate, an outer seed protection plate, a seed picker, an adjusting plate, an end cover, a lead screw, a slider, a slide rail, and a handwheel. The seed picker has seed filling holes with gradually increasing axial dimensions distributed on its surface. The adjusting plate achieves sowing of seeds of different sizes by blocking the seed filling holes on the seed picker. The beneficial effects of this utility model are: developing an adjustable vegetable planter with adjustable seed size, row spacing, and plant spacing, enabling the sowing of different types of vegetables using only one machine, reducing farmers' costs, and achieving precision sowing of different vegetable seeds, thus improving sowing efficiency and quality.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: The above-mentioned device stabilizes the trencher by fixing the connecting rod on the upper part of the trencher with fixing bolts. In actual use, when the frame moves, the force on the trencher in the vertical direction is much greater than the force in the horizontal direction. The connecting rod on the upper part of the trencher and the slider are prone to relative sliding, which causes the position of the trencher to change. The operator needs to frequently reinforce the fixing bolts, resulting in a poor user experience. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a precision seed metering device with adjustable plant spacing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a precision seed metering device with adjustable plant spacing, comprising a three-point suspension device, a frame connected to the three-point suspension device, a seed metering device mounted on the frame, a seed box mounted on the seed metering device, a gearbox mounted on the frame, a seed metering hose connected at one end to the seed metering device, and a furrow opener connected at the other end of the seed metering hose. A fixed rod is connected to the furrow opener. A slide rail is provided on the frame. A slider is slidably mounted on the slide rail. The slider is slidably connected to the fixed rod. A fixing bolt for limiting the seed metering device in the horizontal direction is provided on the slider. A limiting component for limiting the seed metering device in the vertical direction is provided on the slider.

[0007] By adopting the above technical solution, when workers need to sow seeds, they need to connect the three-point suspension device to the tractor to stabilize the device and the frame. Then, the worker simply needs to start the tractor to move the seed metering device. After the frame reaches the target position, the worker needs to adjust the position of the furrow opener. This is done by loosening the fixing bolts to separate them from the slide rail. The worker can then adjust the horizontal position of the furrow opener by sliding the slider horizontally. Further, the worker needs to adjust the vertical position of the furrow opener. This is done by closing the limiting component and moving the furrow opener up and down. Once the furrow opener reaches the appropriate height, the worker simply needs to reopen the limiting component to connect the fixing block and the fixing hole, thus stabilizing the furrow opener and reducing the probability of its height changing under external forces, thereby improving the user experience.

[0008] Then, the operator simply moves the frame to rotate the ground wheels, causing the gears in the gearbox to rotate along with the ground wheels. This, in turn, drives the seed collector in the seed metering unit to rotate via chain drive. As the seed collector rotates, a brush scraper removes excess seeds, causing the seeds inside the seed collector to move along the seed filling hole and the seed guard plate to a certain position below. The seeds are then discharged from the seed filling hole by gravity, moved into the seed metering hose, and finally fall into the seed furrow, completing the sowing operation.

[0009] Furthermore, a limiting groove is formed on the inner wall of the slider, and the limiting component includes a limiting plate slidably disposed in the limiting groove, a fixing block fixed on the side wall of the limiting plate near the fixing rod, and a threaded rod rotatably disposed on the side wall of the limiting plate away from the fixing block. The side wall of the fixing rod near the limiting groove has a plurality of equally spaced fixing holes, and the end of the threaded rod away from the fixing block extends to the outside of the slider and is threadedly connected.

[0010] By adopting the above technical solution, when the worker needs to adjust the height of the trencher in the vertical direction, the height of the fixing rod needs to be adjusted. At this time, the worker needs to rotate the threaded rod, which moves the threaded rod away from the fixing rod, causing the limiting plate and the fixing block to move with the threaded rod, thus separating the fixing block from the fixing hole. Subsequently, the worker only needs to pull the fixing rod up or down to adjust its height. Furthermore, after the fixing rod has moved to the appropriate position, the worker only needs to rotate the threaded rod in the opposite direction to reset it, causing the threaded rod, the limiting plate, and the fixing block to move closer to the fixing rod, thus connecting the fixing block with the fixing hole. This ensures the fixing rod remains stable under the action of the fixing block, reducing the probability of the fixing rod changing position under external force, and thus improving the stability of the trencher.

[0011] Furthermore, multiple fixing blocks are provided and evenly distributed on the side wall of the limiting plate, and the distance between two adjacent fixing blocks is equal to the distance between two adjacent fixing holes.

[0012] By adopting the above technical solution, when the operator rotates the threaded rod, multiple fixing blocks are connected to multiple fixing holes, thereby further improving the stability of the fixing rod and improving the operator's user experience.

[0013] Furthermore, each of the two inner walls opposite to the limiting groove is provided with a placement groove, and a placement block is slidably disposed in each of the two placement grooves. Both placement blocks are fixed to the limiting plate.

[0014] By adopting the above technical solution, the mounting block improves the stability of the limiting plate, reduces the probability of the limiting plate shaking when moving, and thus improves the user experience of the device.

[0015] Furthermore, a stabilizing rod is slidably disposed on the inner top wall of the frame, and a stabilizing groove is formed on the upper surface of the fixed rod, and the stabilizing rod is slidably connected to the stabilizing groove.

[0016] By adopting the above technical solution, the stabilizer bar improves the stability of the fixed bar, reduces the probability of swaying when the fixed bar moves up and down, and thus improves the user experience of the device.

[0017] Furthermore, a deceleration groove is provided on the inner wall of the stabilizing groove, and a deceleration rod is slidably disposed in the deceleration groove, the deceleration rod being fixed to the stabilizing rod.

[0018] By adopting the above technical solution, the deceleration bar increases the sliding friction between the stabilizing bar and the fixed bar, thereby reducing the rate at which the fixed bar moves downward under the action of gravity. This reduces the probability of the fixed bar falling rapidly downward when the fixed block separates from the fixed hole, thus improving the user experience for staff.

[0019] Furthermore, the side wall of the fixing rod is provided with a mounting rod to reduce the difficulty for workers to move the fixing rod.

[0020] Furthermore, a handle is fixed to the end of the threaded rod to reduce the difficulty for workers to turn the threaded rod.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. In this application, when the worker needs to sow seeds, the worker needs to connect the three-point suspension device to the tractor to stabilize the three-point suspension device and the frame. At this time, the worker only needs to start the tractor to drive the seed metering device to move. After the frame moves to the target position, the worker needs to adjust the position of the furrow opener. At this time, the worker only needs to tighten the fixing bolt to separate the fixing bolt from the slide rail. At this time, the worker only needs to slide the slider horizontally to adjust the horizontal position of the furrow opener. Further, the worker needs to adjust the vertical position of the furrow opener. The worker needs to close the limiting component and move the furrow opener up and down to adjust the vertical position of the furrow opener. After the furrow opener moves to the appropriate height, the worker only needs to reopen the limiting component to connect the fixing block with the fixing hole, thereby stabilizing the furrow opener and reducing the probability of the furrow opener changing height when subjected to external force, thus improving the worker's user experience. Subsequently, the worker only needs to move the frame to rotate the ground wheel on the frame, thereby causing the gear in the gearbox to rotate with the ground wheel, and then drive the seed taker in the seed metering device to rotate through the chain drive. During the rotation of the seed dispenser, the brush scraper removes excess seeds, causing the seeds inside the dispenser to rotate along the seed filling hole to a certain position below the seed guard plate, and then be discharged from the seed filling hole by gravity. They then move into the seed discharge hose and finally fall into the seed furrow, completing the sowing operation.

[0023] 2. In this application, when the operator needs to adjust the height of the trencher in the vertical direction, the operator needs to adjust the height of the fixing rod. At this time, the operator needs to rotate the threaded rod, which moves the threaded rod away from the fixing rod, causing the limiting plate and the fixing block to move with the threaded rod, thereby separating the fixing block from the fixing hole. Then, the operator only needs to pull the fixing rod up and down to adjust its height. Furthermore, after the fixing rod has moved to the appropriate position, the operator only needs to rotate the threaded rod in the opposite direction to reset it, causing the threaded rod, the limiting plate, and the fixing block to move closer to the fixing rod, thus connecting the fixing block with the fixing hole. This allows the fixing rod to remain stable under the action of the fixing block, reducing the probability of the fixing rod changing position when subjected to external forces, thereby improving the stability of the trencher.

[0024] 3. In this application, the deceleration bar increases the sliding friction between the stabilizer bar and the fixed bar, thereby reducing the rate at which the fixed bar moves downward under the action of gravity. This reduces the probability of the fixed bar falling rapidly downward when the fixed block separates from the fixed hole, thus improving the user experience for the staff. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the fixing rod and its connection structure according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the fixing hole and its connection structure according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the mounting groove and its connection structure according to an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the limiting component and its connection structure according to an embodiment of the present utility model.

[0030] In the diagram: 1. Three-point suspension device; 11. Frame; 2. Seed metering device; 21. Seed box; 3. Gearbox; 31. Seed metering hose; 4. Furrow opener; 41. Fixing rod; 5. Slide rail; 51. Slider; 6. Fixing bolt; 61. Limiting groove; 7. Limiting assembly; 71. Limiting plate; 72. Fixing block; 73. Threaded rod; 74. Fixing hole; 8. Installation groove; 81. Installation block; 82. Stabilizing rod; 83. Stabilizing groove; 84. Deceleration groove; 85. Deceleration rod; 86. Installation rod; 9. Handle. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] like Figure 1-5As shown in the embodiment of this application, a precision seed metering device with adjustable plant spacing is disclosed, including a three-point suspension device 1, a frame 11, a seed metering device 2, a seed box 21, a gearbox 3, a seed metering hose 31, a furrow opener 4, a fixing rod 41, a slide rail 5, a slider 51, a fixing bolt 6, a limiting component 7, a mounting block 81, a stabilizing rod 82, a deceleration rod 85, a mounting rod 86, and a handle 9. The frame 11 is connected to the three-point suspension device 1, the seed metering device 2 is mounted on the frame 11, and the seed box 21 is mounted on the seed metering device 2. The gearbox 3 is mounted on the frame 11. The seed metering hose 31 has a cylindrical structure, and one end of the seed metering hose 31 is connected to the seed metering device 2. The furrow opener 4 is connected to the other end of the seed metering hose 31. The fixing rod 41 has a rectangular rod structure and is connected to the furrow opener 4. The slide rail 5 is mounted on the frame 11. The slider 51 is a block structure and is slidably mounted on the slide rail 5. The slider 51 is also slidably connected to the fixing rod 41. The fixing bolt 6 is mounted on the slider 51 and is used to limit the seed metering device 2 in the horizontal direction.

[0033] A limiting groove 61 is formed on the inner wall of the slider 51. A limiting component 7 is set on the slider 51 to limit the seed metering device 2 in the vertical direction. The limiting component 7 includes a limiting plate 71, a fixing block 72, and a threaded rod 73. The limiting plate 71 is a rectangular plate structure and is slidably disposed in the limiting groove 61. The fixing block 72 is a rectangular block structure and is fixed to the side wall of the limiting plate 71 near the fixing rod 41. The fixing rod 41 has multiple equally spaced fixing holes 74 on the side wall near the limiting groove 61. The threaded rod 73 is rotatably disposed on the side wall of the limiting plate 71 away from the fixing block 72. The end of the threaded rod 73 away from the fixing block 72 extends to the outside of the slider 51 and is threadedly connected.

[0034] When the operator needs to adjust the height of the trencher 4 vertically, they need to adjust the height of the fixing rod 41. To do this, the operator rotates the threaded rod 73, moving it away from the fixing rod 41. This causes the limiting plate 71 and the fixing block 72 to move with the threaded rod 73, separating the fixing block 72 from the fixing hole 74. Then, the operator can adjust the height of the fixing rod 41 by pulling it up or down. Furthermore, once the fixing rod 41 is in the desired position, the operator can rotate the threaded rod 73 in the opposite direction to reset it. This moves the threaded rod 73, the limiting plate 71, and the fixing block 72 closer to the fixing rod 41, connecting the fixing block 72 with the fixing hole 74. This stabilizes the fixing rod 41 under the action of the fixing block 72, reducing the probability of the fixing rod 41 changing position under external force and thus improving the stability of the trencher 4.

[0035] To improve the user experience for staff, multiple fixing blocks 72 are provided and evenly distributed on the side wall of the limiting plate 71, and the distance between two adjacent fixing blocks 72 is equal to the distance between two adjacent fixing holes 74.

[0036] When the operator rotates the threaded rod 73, multiple fixing blocks 72 are connected to multiple fixing holes 74, which further improves the stability of the fixing rod 41 and thus enhances the operator's user experience.

[0037] The limiting groove 61 has two opposite inner walls with mounting grooves 8. The mounting block 81 is a block structure, and there are two mounting blocks 81, which are slidably disposed in the two mounting grooves 8 respectively. Both mounting blocks 81 are fixed to the limiting plate 71. The mounting blocks 81 improve the stability of the limiting plate 71, reduce the probability of the limiting plate 71 shaking when moving, and thus improve the user experience of the device.

[0038] The stabilizer bar 82 is a round rod structure and is slidably mounted on the inner top wall of the frame 11. A stabilizing groove 83 is formed on the upper surface of the fixed rod 41, and the stabilizer bar 82 is slidably connected to the stabilizing groove 83. The stabilizer bar 82 improves the stability of the fixed rod 41, reduces the probability of swaying when the fixed rod 41 moves up and down, and thus improves the user experience of the device.

[0039] A deceleration groove 84 is provided on the inner wall of the stabilizing groove 83. The deceleration rod 85 is a rod-shaped structure. The deceleration rod 85 is slidably disposed in the deceleration groove 84, and the deceleration rod 85 is fixed to the stabilizing rod 82.

[0040] The deceleration lever 85 increases the sliding friction between the stabilizer bar 82 and the fixed bar 41, thereby reducing the rate at which the fixed bar 41 moves downward under the action of gravity. This reduces the probability of the fixed bar 41 falling rapidly downward when the fixed block 72 separates from the fixed hole 74, thus improving the user experience for staff.

[0041] To improve the user experience for staff, a mounting rod 86 is provided on the side wall of the fixing rod 41 to reduce the difficulty for staff to move the fixing rod 41.

[0042] To reduce the difficulty for workers to rotate the threaded rod 73, a handle 9 is fixed to the end of the threaded rod 73.

[0043] The operating principle of the precision seed metering device 2 with adjustable plant spacing in this embodiment is as follows: When the operator needs to sow seeds, the operator needs to connect the three-point suspension device 1 to the tractor to keep the three-point suspension device 1 and the frame 11 stable. At this time, the operator only needs to start the tractor to drive the seed metering device 2 to move. After the frame 11 moves to the target position, the operator needs to adjust the position of the furrow opener 4. At this time, the operator only needs to tighten the fixing bolt 6 to separate the fixing bolt 6 from the slide rail 5. At this time, the operator only needs to slide the slider 51 horizontally to adjust the horizontal position of the furrow opener 4. Further, the operator needs to adjust the vertical position of the furrow opener 4. The operator needs to close the limiting component 7 and move the furrow opener 4 up and down to adjust the vertical position of the furrow opener 4. When the furrow opener 4 moves to the appropriate height, the operator only needs to reopen the limiting component 7 to connect the fixing block 72 with the fixing hole 74, thereby keeping the furrow opener 4 stable and reducing the probability of the furrow opener 4 changing height when subjected to external force, thus improving the operator's user experience. Subsequently, the operator only needs to move the frame 11 to rotate the ground wheel on the frame 11, thereby causing the gear in the gearbox 3 to rotate along with the ground wheel, which in turn drives the seed taker in the seed metering device 2 to rotate via chain drive. During the rotation of the seed taker, the brush scraper removes excess seeds, causing the seeds in the seed taker to rotate along the seed filling hole along the seed guard plate to a certain position below, and then be discharged from the seed filling hole by gravity, then move into the seed metering hose 31, and finally fall into the seed furrow, completing the sowing operation.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A precision seed metering device with adjustable plant spacing, comprising a three-point suspension device (1), a frame (11) connected to the three-point suspension device (1), a seed metering device (2) mounted on the frame (11), a seed box (21) mounted on the seed metering device (2), a gearbox (3) mounted on the frame (11), a seed metering hose (31) with one end connected to the seed metering device (2), and a furrow opener (4) connected to the other end of the seed metering hose (31), characterized in that: The furrow opener (4) is connected to a fixed rod (41), the frame (11) is provided with a slide rail (5), a slider (51) is slidably provided on the slide rail (5), the slider (51) is slidably connected to the fixed rod (41), the slider (51) is provided with a fixing bolt (6) for limiting the seed metering device (2) in the horizontal direction, and the slider (51) is provided with a limiting component (7) for limiting the seed metering device (2) in the vertical direction.

2. The precision seed metering device with adjustable plant spacing according to claim 1, characterized in that: The inner wall of the slider (51) is provided with a limiting groove (61). The limiting component (7) includes a limiting plate (71) slidably disposed in the limiting groove (61), a fixing block (72) fixed on the side wall of the limiting plate (71) near the fixing rod (41), and a threaded rod (73) rotatably disposed on the side wall of the limiting plate (71) away from the fixing block (72). The fixing rod (41) is provided with a plurality of equally spaced fixing holes (74) on the side wall near the limiting groove (61). The end of the threaded rod (73) away from the fixing block (72) extends to the outside of the slider (51) and is threadedly connected.

3. A precision seed metering device with adjustable plant spacing according to claim 2, characterized in that: The fixing blocks (72) are provided in multiple and are distributed at equal intervals on the side wall of the limiting plate (71). The distance between two adjacent fixing blocks (72) is equal to the distance between two adjacent fixing holes (74).

4. A precision seed metering device with adjustable plant spacing according to claim 3, characterized in that: The limiting groove (61) has two inner walls opposite to each other with a placement groove (8), and a placement block (81) is slidably disposed in each of the two placement grooves (8), and the two placement blocks (81) are fixed to the limiting plate (71).

5. A precision seed metering device with adjustable plant spacing according to claim 4, characterized in that: A stabilizing rod (82) is slidably disposed on the inner top wall of the frame (11), and a stabilizing groove (83) is provided on the upper surface of the fixing rod (41). The stabilizing rod (82) is slidably connected to the stabilizing groove (83).

6. A precision seed metering device with adjustable plant spacing according to claim 5, characterized in that: The inner wall of the stabilizing groove (83) is provided with a deceleration groove (84), and a deceleration rod (85) is slidably arranged in the deceleration groove (84). The deceleration rod (85) is fixed to the stabilizing rod (82).

7. A precision seed metering device with adjustable plant spacing according to claim 6, characterized in that: The side wall of the fixed rod (41) is provided with a mounting rod (86) to reduce the difficulty for workers to move the fixed rod (41).

8. A precision seed metering device with adjustable plant spacing according to claim 7, characterized in that: The end of the threaded rod (73) is fixed with a handle (9) to reduce the difficulty for workers to turn the threaded rod (73).

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