A seed presser with adjustable pressure

Abstract

This utility model discloses a seed compactor with adjustable compaction pressure, including a frame on which a seeding component, a soil-removing component, and a compaction component are sequentially mounted. Wheel components are installed at the four corners of the frame. The compaction component includes a compaction wheel, a square frame, and a fixed shaft. A mounting plate is fixed to the top of the frame, and the square frame is fixedly connected to the bottom of the mounting plate. A fixed shaft is fixed between the two side walls of the square frame, passing through the compaction wheel and rotatably connected to it. The utility model also includes an adjustment component for adjustable compaction pressure. By using a load-bearing block and a steel rope to rotate a motor, the compaction wheel pressure can be linearly adjusted to meet the needs of different crops and soils.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, and in particular to a seed press with adjustable pressing pressure. Background Technology

[0002] In agricultural sowing, a seed roller is a commonly used device. Its main function is to compact the soil after sowing. Moderate compaction ensures close contact between the soil and the seeds, which helps the seeds absorb water and nutrients and improves the germination rate. However, existing seed rollers use a fixed pressure setting. In sandy and loose soil, a fixed pressure may result in insufficient contact between the seeds and the soil; while in heavy clay soil, excessive pressure can easily cause soil compaction and hinder root development. Therefore, depending on the different soil looseness of different lands, the roller needs to apply different pressures to the soil.

[0003] The prior art, CN215011509U, provides a wheat compactor that rotates a first threaded rod and a second threaded rod, causing them to move downwards. This downward movement of the first and second threaded rods applies pressure to an elastic element, which in turn applies pressure to the compactor roller. This allows for quick and effective adjustment of the compactor roller's pressure on the soil. However, when adjusting the pressure, both the first and second threaded rods need to be rotated. Furthermore, increasing the pressure makes rotating the first and second threaded rods more difficult due to the elastic force provided by the elastic element. This results in inconvenient operation for adjusting the compactor roller's pressure on the soil. Additionally, the need to adjust both the first and second threaded rods can easily lead to uneven pressure on the left and right sides, resulting in uneven soil compaction.

[0004] Therefore, there is an urgent need for a seed compactor with adjustable and uniform compaction pressure. Utility Model Content

[0005] The purpose of this invention is to provide a seed compactor with adjustable compaction pressure to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A seed compactor with adjustable compaction pressure includes a frame on which a seeding component, a soil-removing component, and a compaction component are sequentially mounted, and wheel components are mounted at the four corners of the frame.

[0008] A pressing assembly includes a pressing wheel, a square frame, and a fixed shaft. A mounting plate is fixed to the top of the frame, and the square frame is fixedly connected to the bottom of the mounting plate. A fixed shaft is fixed between the two side walls of the square frame, and the fixed shaft passes through the pressing wheel and is rotatably connected to the pressing wheel.

[0009] An adjustment assembly includes multiple load-bearing blocks, multiple steel ropes, a rotating motor, and a rotating rod. An extension plate is fixed to one side of the frame, and the rotating motor is fixed to the top of the extension plate. The output end of the rotating motor is fixedly connected to one end of the rotating rod. A first support plate is fixed to the top of the frame on the side opposite to the rotating motor. The other end of the rotating rod is rotatably connected to the first support plate via a bearing. The rotating rod is arranged parallel to the pressing wheel. Multiple load-bearing blocks are arranged on both sides of the fixed shaft. The load-bearing blocks are fixedly connected to the rotating rod via the steel ropes. The length of the steel ropes decreases sequentially in the direction away from the pressing wheel. The steel ropes pass through the mounting plate but do not contact the mounting plate.

[0010] Furthermore, the sowing assembly includes a seed box and a seed metering device. Two fixed frames are fixed at the top of the frame, and the seed box is fixed between the two fixed frames. Multiple seed boxes are arranged along the axial direction of the press wheel. An opening is provided at the bottom of the seed box, and the seed metering device is disposed at the opening. Both ends of the seed metering device are rotatably connected to the bottom of the seed box. Multiple placement slots are evenly distributed along the circumference of the seed metering device, and the outer wall of the seed metering device is in contact with the inner wall of the seed box.

[0011] Furthermore, the soil-removing assembly includes a scraper, a lever motor, a fixed plate, and a threaded rod. The lever motor is fixedly connected to the fixed frame, and the output end of the lever motor is fixedly connected to one end of the threaded rod. The other end of the threaded rod passes through the fixed plate and is threadedly rotatably connected to the fixed plate. Fixed rods are fixed on both sides of the fixed plate, and a first slider is fixed at the end of the fixed rod. First sliding rods are correspondingly fixed on both sides of the bottom end of the frame. A first sliding track that cooperates with the first slider is vertically opened on the first sliding rod. The top end of the scraper is fixedly connected to the bottom end of the fixed plate.

[0012] Furthermore, a semi-circular frame is fixed at the top center of the square frame, and multiple springs are evenly installed between the top of the semi-circular frame and the mounting plate.

[0013] Furthermore, the bottom end of the load-bearing block is provided with a groove corresponding to the fixed shaft, and elastic protrusions are fixed on both sides of the load-bearing block at the groove, and the groove is locked with the fixed shaft.

[0014] Furthermore, it also includes a clamping assembly, which includes a clamping motor, a second rotating shaft, a gear, a rack, a pressure plate, a connecting rod, and a support column. The clamping motor is fixed to the top of the extension plate, and its output end is fixedly connected to one end of the second rotating shaft. A second support plate is fixed to the top of the frame on the side opposite to the extension plate. The other end of the second rotating shaft is rotatably connected to the second support plate. A gear is installed on the second rotating shaft, and the rack meshes with the gear. The bottom end of the rack is fixedly connected to the middle of the connecting rod. Pressure plates are fixed at both ends of the connecting rod. Through holes for the steel rope to pass through are opened on the pressure plates. A second sliding rod parallel to the rack is fixed to the bottom of the frame. A second slider is fixed to one side of the rack, and a first slide rail that cooperates with the second slider is vertically opened on the second sliding rod.

[0015] Furthermore, the wheel assembly includes a column, an axle, and a wheel. The column is fixed at each of the four corners at the bottom of the frame. One end of the axle is fixedly connected to the bottom of the column, and the other end of the axle is rotatably connected to the wheel.

[0016] This utility model discloses the following technical effects: It provides a seed compactor with adjustable pressing pressure. The load-bearing blocks and steel rope work in conjunction with a rotating motor to linearly adjust the pressing wheel pressure, meeting the needs of different crops and soil types. A spring-assisted buffer and elastic locking design with the fixed shafts of the load-bearing blocks on both sides ensure stable and uniform pressure transmission. Multiple seed boxes and a precision seed metering device enable high-precision multi-row synchronous sowing. The soil-removing component adaptively adjusts the scraper height via a threaded rod drive, precisely controlling the soil covering thickness. An electric adjustment system paired with a gear-rack pressing component ensures efficient and stable operation, preventing steel rope slippage during adjustment. The overall structure is compact, and the modular layout enables integrated "sowing-covering-pressing" operations, effectively improving operational efficiency and sowing quality. It is suitable for various crops and soil types, demonstrating excellent application adaptability and technological innovation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This utility model discloses a seed compactor with adjustable compaction pressure; main view.

[0019] Figure 2 Top view of a seed compactor with adjustable compaction pressure according to this utility model;

[0020] Figure 3 This utility model Figure 2 AA diagram;

[0021] Figure 4 : Schematic diagram of the pressure plate assembly structure of this utility model;

[0022] Figure 5 : Schematic diagram of the load-bearing block structure of this utility model;

[0023] Figure 6 Schematic diagram of the first sliding rod and the first slider of this utility model

[0024] Figure 7 : Schematic diagram of the first sliding rod structure of this utility model;

[0025] Figure 8 : Schematic diagram of the scraper assembly structure of this utility model;

[0026] Specifically, the components are: 1. Frame; 2. Pressing wheel; 3. Square frame; 4. Fixed shaft; 5. Mounting plate; 6. Load-bearing block; 7. Steel rope; 8. Rotating motor; 9. Rotating rod; 10. Extension plate; 11. First support plate; 12. Seed box; 13. Seed metering device; 14. Fixed frame; 15. Placement slot; 16. Scraper; 17. Lever motor; 18. Fixed plate; 19. Threaded rod; 20. Fixed rod; 21. First slider; 22. First sliding rod; 23. First slide rail; 24. Semi-circular frame; 25. Spring; 26. Groove; 27. Pressing motor; 28. Second rotating shaft; 29. ​​Gear; 30. Rack; 31. Pressure plate; 32. Connecting rod; 33. Support column; 34. Through hole; 35. Car column; 36. Rotating shaft; 37. Wheel; 38. Protrusion; 39. Connecting frame; 40. Second support plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The specific implementation method is as follows:

[0030] like Figures 1-8As shown; This utility model discloses a seed compactor with adjustable compaction pressure, including a frame 1, on which a seeding component, a soil-pulling component and a compaction component are sequentially installed, and wheel components are installed at the four corners of the frame 1.

[0031] The pressing assembly includes a pressing wheel 2, a square frame 3 and a fixed shaft 4. A mounting plate 5 is fixed at the top of the frame 1. The square frame 3 is fixedly connected to the bottom of the mounting plate 5. A fixed shaft 4 is fixed between the two side walls of the square frame 3. The fixed shaft 4 passes through the pressing wheel 2 and is rotatably connected to the pressing wheel 2.

[0032] The adjustment assembly includes multiple load-bearing blocks 6, multiple steel ropes 7, a rotating motor 8, and a rotating rod 9. An extension plate 10 is fixed on one side of the frame 1, and the rotating motor 8 is fixed to the top of the extension plate 10. The output end of the rotating motor 8 is fixedly connected to one end of the rotating rod 9. A first support plate 11 is fixed on the top of the frame 1 opposite to the rotating motor 8. The other end of the rotating rod 9 is rotatably connected to the first support plate 11 through a bearing. The rotating rod 9 is arranged parallel to the pressing wheel 2. Multiple load-bearing blocks 6 are arranged on both sides of the fixed shaft 4. The load-bearing blocks 6 are fixedly connected to the rotating rod 9 through steel ropes 7. The length of the steel ropes 7 decreases sequentially in the direction away from the pressing wheel 2. The steel ropes 7 pass through the mounting plate 5 and do not contact the mounting plate 5.

[0033] This invention utilizes a rotating motor 8 to drive a rotating rod 9 to rotate. Because the length of the steel rope 7 decreases in the direction away from the pressing wheel 2, when the rotating rod 9 rotates, the steel ropes 7 of different lengths will cause multiple load-bearing blocks 6 on both sides of the fixed shaft 4 to rise and fall to different degrees. The rise and fall of the load-bearing blocks 6 changes the vertical pressure applied to the fixed shaft 4, thereby adjusting the pressure of the pressing wheel 2 on the soil. In the overall operation process, the seeding component mounted on the frame 1 first completes the seed sowing, then the soil-spreading component covers the seeds with soil through the scraper 16, and finally the pressing wheel 2 of the pressing component compacts the soil under the adjusted pressure, realizing the integrated operation of sowing, covering, and pressing.

[0034] Specifically, by rotating the motor 8 in conjunction with the steel rope 7 and the load-bearing block 6, the compaction pressure can be quickly and flexibly adjusted to meet the compaction requirements of different crops and soil conditions. The pressure can be increased on sandy soil and decreased on heavy clay soil to prevent compaction. The identical setting at both ends of the fixed shaft 4 ensures that the pressure received at both ends is the same, thus making the pressure of the compaction wheel 2 uniform. The sowing, soil spreading, and compaction components are arranged in sequence to achieve continuous automated operation, reduce repetitive operations, and greatly improve sowing efficiency. The clamping design of the load-bearing block 6 and the fixed shaft 4, as well as the buffering effect of the spring 25, ensures stable pressure transmission during the compaction process, making the soil compacted evenly, creating good conditions for seed germination, and improving crop emergence rate and growth quality.

[0035] In this embodiment, the sowing assembly includes a seed box 12 and a seed metering device 13. Two fixed frames 14 are fixed at the top of the frame 1, and the seed box 12 is fixed between the two fixed frames 14. Multiple seed boxes 12 are arranged along the axial direction of the press wheel 2. The bottom of the seed box 12 is provided with an opening, and the seed metering device 13 is provided at the opening. Both ends of the seed metering device 13 are rotatably connected to the bottom of the seed box 12. Multiple placement slots 15 are evenly distributed along the circumference on the seed metering device 13, and the outer wall of the seed metering device 13 is in contact with the inner wall of the seed box 12.

[0036] In this embodiment, two seeding components are provided, and the seed metering device 13 is rotated by a motor (this motor is not shown in the figure).

[0037] The seed metering device 13 of this utility model has evenly distributed placement slots 15 on its circumference, which serve as "quantitative seed picking units". Each placement slot 15 has a fixed volume and picks up seeds sequentially when rotating. Combined with the close fit design between the seed metering device 13 and the inner wall of the seed box 12, it effectively avoids seed omission, accumulation or excessive discharge. Actual tests have shown that in the sowing of crops such as wheat and corn, the single-seed sowing accuracy can reach more than 90%, which is a significant improvement compared to the traditional gravity seed metering device 13 (accuracy of about 75%). It reduces seed waste while ensuring uniform crop emergence, laying the foundation for later growth and yield.

[0038] In this embodiment, the soil-removing assembly includes a scraper 16, a lever motor 17, a fixing plate 18, and a threaded rod 19. The lever motor 17 is fixedly connected to the fixing frame 14. The output end of the lever motor 17 is fixedly connected to one end of the threaded rod 19. The other end of the threaded rod 19 passes through the fixing plate 18 and is threadedly rotatably connected to the fixing plate 18. Fixing rods 20 are fixed on both sides of the fixing plate 18. A first slider 21 is fixed at the end of the fixing rod 20. A first sliding rod 22 is fixed on both sides of the bottom end of the frame 1. A first sliding track 23 that cooperates with the first slider 21 is vertically opened on the first sliding rod 22. The top end of the scraper 16 is fixedly connected to the bottom end of the fixing plate 18.

[0039] After the lever motor 17 of this utility model is powered on, it drives the threaded rod 19, which is fixedly connected to its output end, to rotate. Since the threaded rod 19 is threadedly connected to the fixed plate 18, according to the principle of thread transmission, the rotational motion of the threaded rod 19 is converted into the linear motion of the fixed plate 18 along the axial direction of the threaded rod 19. At the same time, the first slider 21 at the ends of the fixed rods 20 on both sides of the fixed plate 18 slides in the first slide rail 23 of the first sliding rod 22 at the bottom of the frame 1, which guides and limits the movement of the fixed plate 18, ensuring that the fixed plate 18 rises and falls smoothly. This, in turn, drives the scraper 16, which is fixedly connected to the bottom of the fixed plate 18, to adjust its vertical position, thereby achieving flexible adjustment of the height of the scraper 16. During the sowing operation, by controlling the forward and reverse rotation and the number of rotations of the lever motor 17, the height of the scraper 16 off the ground can be precisely adjusted to adapt to different soil covering requirements.

[0040] In this embodiment, a semi-circular frame 24 is fixed at the top center of the square frame 3, and multiple springs 25 are evenly installed between the top of the semi-circular frame 24 and the mounting plate 5.

[0041] In this embodiment, a connecting frame 39 is fixed at the bottom of the mounting plate 5. The connecting frame 39 has a concave structure, and four springs 25 are evenly installed at the bottom of the connecting frame 39 and the top of the semi-circular frame 24.

[0042] The semi-circular frame 24 of this utility model is connected to the first support plate 11 by multiple springs 25 installed at the top, forming an elastic support structure. When the pressing wheel 2 contacts the ground for pressing operations, if the ground is uneven or the pressing resistance changes, the pressing wheel 2 and the square frame 3 will be subjected to upward or downward impact forces. At this time, the springs 25 absorb or release energy through compression or elongation deformation, buffering the impact force, so that the pressing wheel 2 can adaptively adjust its height according to the undulation of the ground. At the same time, the elastic restoring force of the springs 25 maintains the continuous pressure of the pressing wheel 2 on the soil. This structure utilizes the elastic characteristics of the springs 25 to add flexible buffering on the basis of mechanical rigid connection, balancing the force fluctuations during the pressing process.

[0043] In this embodiment, the bottom end of the load-bearing block 6 is provided with a groove 26 corresponding to the fixed shaft 4, and elastic protrusions 38 are fixed on both sides of the load-bearing block at the groove 26. The groove 26 is locked with the fixed shaft 4.

[0044] The load-bearing block 6 of this utility model is clamped to the fixed shaft 4 by the bottom groove 26. The elastic protrusions 38 on both sides of the groove 26 deform during assembly, forming a radial clamping force. When the rotating motor 8 lifts or lowers the load-bearing block 6 through the steel rope 7, it is convenient to place several load-bearing blocks 6 on the fixed shaft 4 to adjust the pressure.

[0045] In this embodiment, a clamping assembly is also included. The clamping assembly includes a clamping motor 27, a second rotating shaft 28, a gear 29, a rack 30, a pressure plate 31, a connecting rod 32, and a support column 33. The clamping motor 27 is fixed to the top of the extension plate 10. The output end of the clamping motor 27 is fixedly connected to one end of the second rotating shaft 28. A second support plate 40 is fixed to the top of the side of the frame 1 opposite to the extension plate 10. The other end of the second rotating shaft 28 is rotatably connected to the second support plate 40. A gear 29 is installed on the second rotating shaft 28. The rack 30 meshes with the gear 29. The bottom end of the rack 30 is fixedly connected to the middle of the connecting rod 32. Pressure plates 31 are fixed at both ends of the connecting rod 32. Through holes 34 for the steel rope 7 to pass through are opened on the pressure plates 31. A second sliding rod parallel to the rack 30 is fixed to the bottom of the frame 1. A second slider is fixed to one side of the rack 30. A first slide rail 23 that cooperates with the second slider is vertically opened on the second sliding rod.

[0046] After the pressure motor 27 of this utility model is started, the output shaft drives the second rotating shaft 28 to rotate, and the gear 29 installed on the second rotating shaft 28 rotates accordingly. Since the gear 29 meshes with the rack 30, the circular motion of the gear 29 is converted into the linear motion of the rack 30 through the inter-tooth force. Under the guidance of the slide rail formed by the second sliding rod and the second slider, the rack 30 moves smoothly vertically, driving the connecting rod 32 and the pressure plates 31 at both ends to rise and fall synchronously. The through hole 34 on the pressure plate 31 allows the steel rope 7 to pass through. When the pressure plate 31 descends, it applies pressure to the steel rope 7, making it fit tightly against the connection between the fixed shaft 4 and the load-bearing block 6. When the pressure plate 31 rises, the restraint of the steel rope 7 is released, and the position of the load-bearing block 6 can be freely adjusted, thereby realizing the control of the pressing and releasing of the steel rope 7 and ensuring the stability of the transmission of the steel rope 7 during the pressure adjustment process.

[0047] In this embodiment, the wheel 37 assembly includes a column 35, a shaft 36 and a wheel 37. The column 35 is fixed at each of the four corners of the bottom of the frame 1. One end of the shaft 36 is fixedly connected to the bottom of the column 35, and the other end of the shaft 36 is rotatably connected to the wheel 37.

[0048] The column 35 of this utility model is vertically fixed at the four corners of the bottom end of the frame 1, serving as the main component for load-bearing and connection, providing support for the entire press. The wheel 37 can rotate freely around the axis of the shaft 36. During the operation of the press, the wheel 37 contacts the ground and generates rolling friction, driving the press forward.

[0049] In practical use, this utility model discloses a seed-pressing and pressing device with adjustable pressing pressure. Using a frame 1 as a carrier, it integrates components for sowing, soil removal, and pressing to achieve integrated operation. During operation, the wheel 37 assembly supports the entire machine and provides the power for movement. The seed metering device 13 of the sowing assembly quantitatively picks up and places seeds through the placement trough 15. The scraper 16 of the soil removal assembly, driven by a lever motor 17, is height-adjusted via a threaded rod 19 and guided by a slider track, thus leveling the soil. The pressing wheel 2 of the pressing assembly is rotatably connected to a fixed shaft 4. The adjustment assembly drives a rotating rod 9 via a rotating motor 8, using the length difference of the steel rope 7 to control the position of the load-bearing block 6, changing the pressure on the fixed shaft 4, and thus adjusting the pressing pressure of the pressing wheel 2. A spring 25 buffers the impact from the ground. Simultaneously, the pressing assembly, driven by a motor, uses a gear 29 and rack 30 mechanism to raise and lower the pressing plate 31 to press or release the load-bearing block 6, ensuring stability during the adjustment process. All components work together to achieve precise sowing and efficient pressing.

[0050] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A seed presser with adjustable presser force, characterized in that: include; The machine frame is equipped with a seeding assembly, a soil-removing assembly, and a compaction assembly, and wheel assemblies are installed at the four corners of the machine frame. A pressing assembly includes a pressing wheel, a square frame, and a fixed shaft. A mounting plate is fixed to the top of the frame, and the square frame is fixedly connected to the bottom of the mounting plate. A fixed shaft is fixed between the two side walls of the square frame, and the fixed shaft passes through the pressing wheel and is rotatably connected to the pressing wheel. An adjustment assembly includes load-bearing blocks, steel ropes, a rotating motor, and a rotating rod. An extension plate is fixed to one side of the frame, and the rotating motor is fixed to the top of the extension plate. The output end of the rotating motor is fixedly connected to one end of the rotating rod. A first support plate is fixed to the top of the frame on the side opposite to the rotating motor. The other end of the rotating rod is rotatably connected to the first support plate via a bearing. The rotating rod is arranged parallel to the pressing wheel. Multiple load-bearing blocks are arranged on both sides of the fixed shaft. The load-bearing blocks are fixedly connected to the rotating rod via the steel ropes. The length of the steel ropes decreases sequentially in the direction away from the pressing wheel. The steel ropes pass through the mounting plate but do not contact the mounting plate. The sowing assembly includes a seed box and a seed metering device. Two fixed frames are fixed at the top of the frame, and the seed box is fixed between the two fixed frames. Multiple seed boxes are arranged along the axial direction of the press wheel. The bottom of the seed box is provided with an opening, and the seed metering device is provided at the opening. Both ends of the seed metering device are rotatably connected to the bottom of the seed box. Multiple placement slots are evenly distributed along the circumference on the seed metering device, and the outer wall of the seed metering device is in contact with the inner wall of the seed box. The soil-removing assembly includes a scraper, a lever motor, a fixed plate, and a threaded rod. The lever motor is fixedly connected to the fixed frame, and the output end of the lever motor is fixedly connected to one end of the threaded rod. The other end of the threaded rod passes through the fixed plate and is threadedly rotatably connected to the fixed plate. Fixed rods are fixed on both sides of the fixed plate, and a first slider is fixed at the end of the fixed rod. First sliding rods are correspondingly fixed on both sides of the bottom end of the frame. A first sliding track that cooperates with the first slider is vertically opened on the first sliding rod. The top end of the scraper is fixedly connected to the bottom end of the fixed plate.

2. The seed presser according to claim 1, wherein: A semi-circular frame is fixed at the top center of the square frame, and multiple springs are evenly installed between the top of the semi-circular frame and the mounting plate.

3. The seed compactor with adjustable compaction pressure according to claim 1, characterized in that: The bottom end of the load-bearing block is provided with a groove corresponding to the fixed shaft. The load-bearing block is fixed with elastic protrusions on both sides of the groove. The groove is locked with the fixed shaft.

4. The seed compactor with adjustable compaction pressure according to claim 1, characterized in that: It also includes a clamping assembly, which includes a clamping motor, a second rotating shaft, a gear, a rack, a pressure plate, a connecting rod, and a support column. The clamping motor is fixed to the top of the extension plate, and its output end is fixedly connected to one end of the second rotating shaft. A second support plate is fixed to the top of the frame on the side opposite to the extension plate. The other end of the second rotating shaft is rotatably connected to the second support plate. A gear is installed on the second rotating shaft, and the rack meshes with the gear. The bottom end of the rack is fixedly connected to the middle of the connecting rod. Pressure plates are fixed at both ends of the connecting rod. Through holes for the steel rope to pass through are opened on the pressure plates. A second sliding rod parallel to the rack is fixed to the bottom of the frame. A second slider is fixed to one side of the rack. A first slide rail that cooperates with the second slider is vertically opened on the second sliding rod.

5. A seed compactor with adjustable compaction pressure according to claim 1, characterized in that: The wheel assembly includes a column, an axle, and a wheel. The column is fixed at each of the four corners at the bottom of the frame. One end of the axle is fixedly connected to the bottom of the column, and the other end of the axle is rotatably connected to the wheel.

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