Seeding machine with high stability

Abstract

The utility model belongs to the field of agricultural machinery, in particular relates to a high-stability seeding machine, and provides the following scheme aiming at the problems that the existing seeding machine is directly hung on a cross beam in a pull-type linking manner, has no four-bar linkage profiling and no depth limiting wheel, affects the uniformity of seed distance and the consistency of seeding depth, and further affects the seedling emergence condition of seeds. Comprising a frame body, a wheel carrier is rotationally arranged on one side of the frame body, a depth limiting press wheel is rotationally arranged at the bottom end of the wheel carrier, and a seed sowing device is installed in the frame body; the two ditching pieces are used for ditching land, and the two ditching pieces are rotationally arranged at the bottom of the frame body; the profiling four-connecting-rod mechanism is used for adapting to topographic changes, the seeding machine can automatically adjust the seeding depth, so that a user can conveniently adjust the seeding depth according to actual conditions, the seeding machine can float along with the topographic changes, the consistency of the seeding depth is guaranteed, and finally a more stable planting effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a seeder with high stability. Background Technology

[0002] A seeder is a device used to sow seeds into the soil according to certain requirements such as row spacing, plant spacing, sowing rate and sowing depth. It is usually composed of components such as seed metering device, furrow opener, soil covering device and compactor, which together complete the processes of seed distribution, arrangement, sowing and compaction.

[0003] The following are the disadvantages of commonly used seeders during use:

[0004] The single-unit seeding system uses a drag-and-hang method, directly attached to the crossbeam. It lacks a four-linkage guide and depth-limiting wheel, which affects the uniformity of seed spacing and the consistency of sowing depth, thus affecting seed germination. It is generally used in small-ridge planting mode. The single-unit structure is relatively wide and is not suitable for large-ridge planting mode with adjustable planting.

[0005] Four-link contoured side-limited depth sowing unit: The left and right furrow plates are attached to the side to limit the depth. The structure of each unit is wider and the gap between units is small when planting. When the soil moisture is too high or there is a lot of straw, it is easy to drag and pile up, which affects the sowing effect.

[0006] Therefore, there is a need for a seeder with better performance, more stable planting results, and high compatibility that can achieve multiple uses. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of a four-linkage guide wheel and depth limiting wheel, which affects the uniformity of seed spacing and the consistency of sowing depth, thus affecting seed germination. Therefore, this invention proposes a highly stable seeder.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A highly stable seeder includes a frame, a wheel frame rotatably mounted on one side of the frame, a limited-depth press wheel rotatably mounted at the bottom end of the wheel frame, and a seed metering device installed inside the frame.

[0010] Two trenching plates are used to trench the land, and both trenching plates are rotatably mounted at the bottom of the frame.

[0011] A contour-following four-bar linkage is used to adapt to changes in terrain. The contour-following four-bar linkage is set on one side of the frame. The contour-following four-bar linkage includes a front section of a four-bar unit, a lower contour-following link, and an upper contour-following link. Both ends of the lower and upper contour-following links are rotatably set on one side of the frame, and the front section of the four-bar unit is rotatably set on the other side of the lower and upper contour-following links.

[0012] An adjustment mechanism is used to adjust the angle of the wheel frame, and the adjustment mechanism is located inside the wheel frame.

[0013] In one possible design, the contoured four-bar linkage further includes a four-bar contoured handle and at least one contoured tension spring. The top of the upper contoured link has a sliding hole, and the bottom end of the four-bar contoured handle is disposed in the sliding hole. One end of the contoured tension spring is fixedly disposed at the top of the lower contoured link, and the other end of the contoured tension spring is fixedly disposed at the bottom end of the four-bar contoured handle. Multiple slots are provided on both sides of the sliding hole, and the multiple slots cooperate with the four-bar contoured handle.

[0014] In one possible design, the adjusting mechanism includes a threaded rod and a nut, a rotating plate is rotatably arranged inside the frame, the nut is fixedly arranged on the outer wall of the rotating plate, a rotating cylinder is rotatably arranged inside the wheel frame, one end of the threaded rod rotatably passes through the rotating cylinder, and the other end of the threaded rod extends threadedly into the interior of the nut.

[0015] In one possible design, a grooving knife is fixedly installed at the bottom of the frame and is located between two grooving plates. A seed guide tube is fixedly installed at the bottom of the frame, and the top end of the seed guide tube is connected to the discharge end of the seed metering device. The seed guide tube is located between the two grooving plates.

[0016] In one possible design, the front section of the four-link unit is internally equipped with a transmission sprocket, and the frame is internally equipped with a double-row sprocket. The outer wall of one bearing of the double-row sprocket and the outer wall of the transmission sprocket are driven by the same chain, and the outer wall of the other bearing of the double-row sprocket and the outer wall of the drive bearing of the seed metering device are driven by the same sprocket.

[0017] In one possible design, two outer scrapers are fixedly installed at the bottom of the frame, and the two outer scrapers are respectively located on the side of the two grooved plates that are far apart. An inner scraper is fixedly installed at the bottom of the frame, and the two inner scrapers are respectively located between the two grooved plates.

[0018] In one possible design, a plurality of mounting holes are provided on one side of the frame, and a seed monitoring probe is installed in at least one of the mounting holes.

[0019] In one possible design, the top and bottom of the front section of the four-link unit are provided with fixed pressure plates, and the surfaces of the front section of the four-link unit and the two fixed pressure plates are provided with through holes.

[0020] In this application, during actual use, rotating the threaded rod causes the nut to shift relative to the outer wall of the threaded rod, thereby controlling the wheel frame to move up or down along the rotation point of the furrowing plate. The rotating plate and drum will rotate accordingly to coordinate with the movement of the wheel frame, adjusting the position of the depth-limiting compaction wheel. This controls and adjusts the distance between the seeder and the ground, thus adjusting the sowing depth. The furrowing plate will create seed furrows in front, and the furrowing knife can create more precise seedbed furrows relative to the furrowing plate. Seeds are stored inside the seed metering device and fall through the seed guide tube at the bottom to achieve the sowing effect. The seed metering device is driven by an existing motor or the power from the drive shaft of a tractor, which drives the transmission sprocket to rotate. The transmission sprocket drives the double-row sprocket to rotate via a chain, and the double-row sprocket drives the drive sprocket of the seed metering device via a chain, thus realizing the sowing work. The furrowing plate and furrowing knife work together to create furrows, the seed metering device sows seeds, and the depth-limiting compaction wheel is responsible for re-compacting the soil, completing the entire sowing process. To install a seeder, the four-link front section of the seeder is fitted onto the drive unit of a tractor or similar device equipped with a main beam. Two fixing plates are then attached to the upper and lower ends of the four-link front section, respectively. The pre-set through holes on the four-link front section, the fixing plates, and the main beam are aligned and then connected and secured with bolts.

[0021] In this utility model, the highly stable seeder, through a contour-following four-bar linkage mechanism, allows the soil working parts of the seeder to float up and down with changes in terrain, thereby maintaining the consistency of the sowing depth and ensuring that the seeds can be sown stably.

[0022] In this utility model, the highly stable seeder can adjust the position of the depth-limiting press wheel through an adjustment mechanism, thereby controlling and adjusting the distance between the seeder and the ground to achieve the adjustment of the sowing depth;

[0023] In this invention, the seeder can automatically adjust the sowing depth during use, allowing users to adjust it according to actual conditions. Furthermore, the seeder can float with changes in terrain to ensure consistent sowing depth and ultimately achieve a more stable planting effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the planar structure of a seeder with high stability proposed in this utility model;

[0025] Figure 2This is a schematic diagram of the planar cross-sectional structure of a seeder with high stability proposed in this utility model;

[0026] Figure 3 This is a three-dimensional internal structure diagram of a highly stable seeder proposed in this utility model;

[0027] Figure 4 This is a bottom-view plan view of a highly stable seeder proposed in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of a highly stable seeder proposed in this utility model;

[0029] Figure 6 This is a cross-sectional plan view of a highly stable seeder proposed in this utility model;

[0030] Figure 7 This is a schematic diagram of the installation structure of a highly stable seeder proposed in this utility model.

[0031] In the diagram: 1. Frame; 2. Grooving blade; 3. Inner scraper; 4. Outer scraper; 5. Wheel frame; 6. Depth-limiting press wheel; 7. Threaded rod; 8. Rotary drum; 9. Nut; 10. Seed metering device; 11. Four-link contour handle; 12. Four-link single front section; 13. Drive sprocket; 14. Lower contour connecting rod; 15. Contouring tension spring; 16. Double-row sprocket; 17. Upper contour connecting rod; 18. Seed guide tube; 19. Mounting hole; 20. Seed monitoring probe; 21. Protective shell; 22. Rotating plate; 23. Fixing pressure plate; 24. Grooving knife. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Example 1

[0034] Reference Figure 1-2 A seeder includes: a frame 1, a wheel frame 5 rotatably mounted on one side of the frame 1, and a depth-limiting compaction wheel 6 rotatably mounted at the bottom of the wheel frame 5 for maintaining consistent sowing depth and compacting the soil during the sowing process. A seed metering device 10 is installed inside the frame 1 for evenly discharging seeds.

[0035] To achieve the ditching function, two ditching plates 2 are rotatably installed at the bottom of the frame 1. The two ditching plates 2 can ditch the land during rotation, providing a suitable soil environment for seed sowing.

[0036] To enhance the seeder's terrain adaptability, a contour-following four-bar linkage is installed on one side of the frame 1. This linkage includes a front section 12 of the four-bar unit, a lower contour-following link 14, and an upper contour-following link 17. Both ends of the lower contour-following link 14 and the upper contour-following link 17 are rotatably mounted on one side of the frame 1, while the front section 12 is rotatably mounted on the other side. When the terrain changes, the contour-following four-bar linkage can flexibly adjust to maintain the seeder's stability.

[0037] This application can be used in the field of agricultural machinery, or in other fields applicable to this application.

[0038] Example 2

[0039] refer to Figure 1 An improvement upon Example 1: A highly stable seeder, applied in the field of agricultural machinery, incorporates an adjustment mechanism inside the wheel frame 5 to allow for angle adjustment. The adjustment mechanism includes a threaded rod 7 and a nut 9. A rotating plate 22 is rotatably mounted inside the frame 1, and the nut 9 is fixedly mounted on the outer wall of the rotating plate 22. A rotating cylinder 8 is rotatably mounted inside the wheel frame 5, and one end of the threaded rod 7 rotatably passes through the rotating cylinder 8 and extends threadedly into the interior of the nut 9.

[0040] Specifically, rotating the threaded rod 7 causes the nut 9 to move relative to the outer wall of the threaded rod 7, thereby controlling the wheel frame 5 to move up or down along the rotation point with the furrowing plate 2. The rotating plate 22 and the rotating drum 8 will rotate accordingly to match the movement of the wheel frame 5, thereby adjusting the position of the depth-limiting pressing wheel 6, thus controlling and adjusting the distance between the seeder and the ground, and realizing the adjustment of the sowing depth.

[0041] Reference Figure 2-3 To further enhance the performance of the four-bar linkage, a four-bar linkage pull handle 11 and at least one four-bar linkage tension spring 15 are also included. A sliding hole is provided at the top of the upper four-bar linkage 17, and the bottom end of the four-bar linkage pull handle 11 is positioned within this hole. One end of the tension spring 15 is fixed to the top of the lower four-bar linkage 14, and the other end is fixed to the bottom of the four-bar linkage pull handle 11. Multiple slots are provided on both sides of the sliding hole, which engage with the four-bar linkage pull handle 11. By engaging the pull handle 11 into different slots, the tension of the tension spring 15 is controlled. When the seeder moves up and down with the undulations of the ground using the four-bar linkage, the tension spring 15 can mitigate the amplitude of these changes, thereby increasing its stability.

[0042] Reference Figure 2During the sowing process, to ensure that the seeds accurately fall into the furrows created by the furrowing plates 2, a furrowing knife 24 and a seed guide tube 18 are fixedly installed at the bottom of the frame 1. The furrowing knife 24 is located between the two furrowing plates 2 to further refine the furrowing effect. The top of the seed guide tube 18 is connected to the discharge end of the seed metering device 10 and is located between the two furrowing plates 2 to ensure that the seeds can fall smoothly into the furrows.

[0043] Reference Figure 3 To drive the seed metering device 10 for sowing, a transmission sprocket 13 is rotatably mounted inside the front section 12 of the four-link unit, and a double-row sprocket 16 is rotatably mounted inside the frame 1. One bearing of the double-row sprocket 16 and the outer wall of the transmission sprocket 13 are driven by the same chain. The other bearing of the double-row sprocket 16 and the outer wall of the drive bearing of the seed metering device 10 are driven by the same sprocket, thus driving the seed metering device 10.

[0044] Specifically, the seed metering device 10 is driven to dispense seeds by an existing motor or the power source on the drive shaft of a tractor, which drives the transmission sprocket 13 to rotate. The transmission sprocket 13 then drives the double-row sprocket 16 to rotate via a chain. The double-row sprocket 16, in turn, drives the drive sprocket of the seed metering device 10 via a chain, thus achieving the sowing operation. The principle of using the rotation of the drive sprocket to drive the seed metering device 10 for sowing, and the working principle of the seed metering device 10 itself, are common knowledge and will not be elaborated upon here.

[0045] The furrowing blade 2 and the furrowing knife 24 work together to open furrows, the seed metering device 10 sows seeds, and the depth-limiting compaction wheel 6 is responsible for re-compacting the soil to complete the entire sowing process.

[0046] Reference Figure 2 To prevent soil from accumulating on the sidewalls of the trenching plates 2 during the trenching process, two outer scrapers 4 and two inner scrapers 3 are fixedly installed at the bottom of the frame 1. The two outer scrapers 4 are located on opposite sides of the two trenching plates 2 and are used to scrape away the soil on the outer side of the trenching plates 2. The two inner scrapers 3 are located between the two trenching plates 2 and are used to scrape away the soil on the inner side of the trenching plates 2.

[0047] Reference Figure 6 To facilitate observation of seed sowing, multiple mounting holes 19 are provided on one side of the frame 1, and a seed monitoring probe 20 is installed in at least one mounting hole 19. The seed monitoring probe 20 allows for real-time observation of seed sowing, ensuring accuracy and uniformity.

[0048] Reference Figure 7To facilitate the installation of the seeder, fixed pressure plates 23 are provided at the top and bottom of the front section 12 of the four-link unit, and through holes are opened on the surface of the front section 12 of the four-link unit and the two fixed pressure plates 23 to facilitate fixing with fasteners such as bolts.

[0049] Specifically, the installation of the seeder is achieved by mounting the four-link front section 12 of the seeder onto the drive of a tractor or similar vehicle equipped with a main beam, and attaching two fixing plates 23 to the upper and lower ends of the four-link front section 12 respectively. At the same time, the four-link front section 12, the fixing plates 23, and the pre-set through holes on the main beam are aligned and connected and fixed with bolts.

[0050] Protective plates 21 are provided on both the upper contour link 17 and the frame 1 to protect the internal chain and other mechanisms.

[0051] Reference Figure 4 The included angle between the two grooved pieces 2 is 10.5 degrees.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highly stable seeder, characterized in that, include: A frame (1) is provided with a wheel frame (5) rotatably mounted on one side of the frame (1), and a limited-depth pressing wheel (6) is rotatably mounted at the bottom end of the wheel frame (5). A seed metering device (10) is installed inside the frame (1). Two trenching plates (2) are used to trench the land, and both trenching plates (2) are rotatably set at the bottom of the frame (1); A contour-following four-bar linkage is used to adapt to terrain changes. The contour-following four-bar linkage is set on one side of the frame (1). The contour-following four-bar linkage includes a four-bar linkage front section (12), a lower contour-following link (14), and an upper contour-following link (17). Both ends of the lower contour-following link (14) and the upper contour-following link (17) are rotatably set on one side of the frame (1). The four-bar linkage front section (12) is rotatably set on the other side of the lower contour-following link (14) and the upper contour-following link (17). An adjustment mechanism is provided for adjusting the angle of the wheel frame (5), and the adjustment mechanism is located inside the wheel frame (5).

2. The highly stable seeder according to claim 1, characterized in that, The contoured four-bar linkage also includes a four-bar contoured handle (11) and at least one contoured tension spring (15). The top of the upper contoured link (17) is provided with a sliding hole, and the bottom end of the four-bar contoured handle (11) is set in the sliding hole. One end of the contoured tension spring (15) is fixedly set at the top of the lower contoured link (14), and the other end of the contoured tension spring (15) is fixedly set at the bottom end of the four-bar contoured handle (11). Multiple slots are provided on both sides of the sliding hole, and the multiple slots are all engaged with the four-bar contoured handle (11).

3. The highly stable seeder according to claim 2, characterized in that, The adjustment mechanism includes a threaded rod (7) and a nut (9). A rotating plate (22) is rotatably arranged inside the frame (1). The nut (9) is fixedly arranged on the outer wall of the rotating plate (22). A rotating cylinder (8) is rotatably arranged inside the wheel frame (5). One end of the threaded rod (7) rotatably passes through the rotating cylinder (8), and the other end of the threaded rod (7) extends threadedly into the interior of the nut (9).

4. A highly stable seeder according to claim 3, characterized in that, A ditching knife (24) is fixedly installed at the bottom of the frame (1), and the ditching knife (24) is located between two ditching plates (2). A seed guide tube (18) is fixedly installed at the bottom of the frame (1), and the top end of the seed guide tube (18) is connected to the discharge end of the seed metering device (10). The seed guide tube (18) is located between two ditching plates (2).

5. A highly stable seeder according to claim 4, characterized in that, The front section (12) of the four-link unit is equipped with a drive sprocket (13) for rotation. The frame (1) is equipped with a double-row sprocket (16) for rotation. The outer wall of one bearing of the double-row sprocket (16) and the outer wall of the drive sprocket (13) are equipped with the same chain. The outer wall of the other bearing of the double-row sprocket (16) and the outer wall of the drive bearing of the seed metering device (10) are equipped with the same sprocket.

6. A highly stable seeder according to claim 1, characterized in that, The bottom of the frame (1) is fixedly provided with two outer scrapers (4), and the two outer scrapers (4) are respectively located on the side away from the two grooved plates (2). The bottom of the frame (1) is fixedly provided with an inner scraper (3), and the two inner scrapers (3) are respectively located between the two grooved plates (2).

7. A highly stable seeder according to claim 1, characterized in that, The frame (1) has multiple mounting holes (19) on one side, and a seed monitoring probe (20) is installed in at least one of the mounting holes (19).

8. A highly stable seeder according to claim 1, characterized in that, The top and bottom of the front section (12) of the four-link unit are provided with fixed pressure tiles (23), and the surfaces of the front section (12) of the four-link unit and the two fixed pressure tiles (23) are provided with through holes.

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