A seed selection device for an agricultural seeding machine
By using a plug-in sieve plate and an electric adjustment structure, the problems of inconvenient sieve plate replacement and fixed tilt angle are solved, achieving efficient and accurate seed sieving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHIFENG CITY SONGSHAN DISTRICT AGRI & ANIMAL HUSBANDRY BUREAU
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-21
AI Technical Summary
The existing seed selection devices of agricultural seeding machinery have inconvenient sieve plates that cannot be replaced, cannot dynamically adjust the tilt angle, and the screening method results in uneven seed rolling speed, affecting screening accuracy and efficiency.
It adopts a plug-in sieve plate structure and wedge block limiting, combined with electric push rod to adjust the tilt angle of the sieve plate, and extends the contact time between the seeds and the sieve plate by driving the sieve plate to move through the motor.
It improves the efficiency of sieve plate replacement, controls the seed rolling speed, extends the contact time, and enhances the sieve accuracy and overall seed selection effect.
Smart Images
Figure CN224525268U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seed selection device technology, and more specifically, to a seed selection device for agricultural sowing machinery. Background Technology
[0002] Agricultural planting is closely related to people's lives. People's food and clothing are basically inseparable from agricultural planting. In order to improve the quality of agricultural products, seed selection devices are usually used to remove shriveled and unripe seeds.
[0003] Utility model patent application publication number 202421528238.7 discloses a seed selection device for agricultural sowing machinery, including a box body, a filter box at the top of the box body, a feeding chamber at the top of the filter box, a feeding hopper at the top of the feeding chamber, a rotating rod rotatably mounted inside the feeding chamber, one end of the rotating rod passing through the feeding chamber and fixedly connected to a first motor located outside the feeding chamber, multiple feeding plates fixedly mounted on the rotating rod, a guide plate inclinedly mounted inside the filter box, an air inlet pipe and an air outlet pipe respectively on both sides of the filter box, a bracket fixedly mounted inside the air inlet pipe and an axis rotating on each of the two brackets, multiple fan blades movable inside the air inlet pipe fixedly mounted on the axis rotating, one end of the axis passing through the bracket and fixedly connected to a second motor located on the bracket, which can remove skin and empty shells from the seeds before sorting and screening, thereby avoiding the clogging of the sieve plates by skin and empty shells during the seed sorting and screening process, and ensuring the normal sorting and screening of seeds.
[0004] While the aforementioned device can clean empty shells and dander during use, the following problems still exist:
[0005] 1. The sieve plates in the above-mentioned devices are generally fixedly connected, making them difficult to disassemble or replace. When selecting seeds of different sizes and shapes, a significant amount of time and labor must be spent on complete replacements or tedious adjustments. This not only significantly increases the workload of operators but also drastically reduces the overall efficiency of seed selection operations.
[0006] 2. The sieve plate of the above-mentioned device always maintains a single preset tilt angle and cannot be dynamically adjusted according to seed characteristics (such as roundness, size, and weight). This results in the inability to effectively control the rolling speed of different seeds on the sieve surface. They either slide down too quickly and are not fully screened, or they accumulate too slowly, affecting the sorting, ultimately causing a decrease in screening accuracy and poor seed selection effect.
[0007] 3. The above-mentioned device relies on the up-and-down vibration of the sieve plate for screening. This motion mode easily causes seeds to jump on the sieve surface rather than roll or slide effectively. Jumping reduces the effective contact time and area between the seeds and the sieve holes, lowering the probability of qualified seeds passing through the sieve. At the same time, some seeds are easily shaken away or directly ejected from the sieve surface, resulting in waste of useful seeds and a loss of overall screening efficiency.
[0008] To address the above problems, there is an urgent need to develop a seed selection device for agricultural seeding machinery. Utility Model Content
[0009] In view of the problems existing in the prior art, this utility model provides a seed selection device for agricultural sowing machinery to solve the technical problem of inconvenience in replacing the sieve plate mentioned in the background art.
[0010] To achieve the above objectives, this utility model provides the following technical solution: a seed selection device for agricultural sowing machinery, comprising a support leg, a seed selection box fixedly connected to the support leg, a closed door fixedly connected to the front side of the seed selection box, symmetrically distributed fixing blocks fixedly connected to the inner wall of the seed selection box, a connecting plate slidably connected to the fixing block, a fixing frame fixedly connected between two adjacent connecting plates, a sliding frame slidably connected to the fixing frame, a sieve plate inserted into the sliding frame, two fixing plates fixedly connected to the front side of the sliding frame, a sliding column slidably connected to the fixing plate, a wedge block fixedly connected to the sliding column, a spring fixedly connected between the wedge block and the adjacent fixing plate, through holes provided on both sides of the seed selection box, an inclined plate fixedly connected to each through hole of the seed selection box, a through groove provided on the side of the sliding frame near the inclined plate, a rotating structure provided between the two fixing frames, and a reciprocating structure provided on the rear side of the seed selection box.
[0011] The present invention is further configured such that each of the two adjacent fixing blocks has an arc-shaped surface on its opposite side, and the arc-shaped surface of the fixing block is in contact with the adjacent connecting plate.
[0012] The present invention is further configured such that the rotating structure includes two rotating shafts, both of which are rotatably connected to the rear side of the seed selection box, the rotating shafts are fixedly connected to the adjacent fixed frame, and the rotating shafts are fixedly connected to gears.
[0013] The present invention is further configured such that the central axis of the rotating shaft coincides with the midpoint of the line connecting the two fixed frames.
[0014] The present invention is further configured such that two guide posts are fixedly connected to the rear side of the seed selection box, a sliding block is slidably connected between the two guide posts, two racks are fixedly connected to the sliding block, the two racks are centrally symmetrical, the racks mesh with the adjacent gears, and an electric push rod is fixedly connected to the rear side of the seed selection box, the telescopic end of the electric push rod is fixedly connected to the sliding block.
[0015] The present invention is further configured such that the reciprocating structure includes two connecting columns, the two connecting columns are slidably connected to the rotating shaft, the connecting columns are fixedly connected to the adjacent sliding frame, and a connecting plate is rotatably connected between the two connecting columns.
[0016] The present invention is further configured such that a connecting block is fixedly connected to the connecting plate, the connecting block is provided with a through groove, a support plate is fixedly connected to the rear side of the seed selection box, a motor is fixedly connected to the support plate, a circular plate is fixedly connected to the output shaft of the motor, a fixing column is fixedly connected to the eccentric part of the circular plate, and the fixing column is slidably connected in the through groove of the connecting block.
[0017] Compared with the prior art, this utility model provides a seed selection device for agricultural sowing machinery, which has the following beneficial effects:
[0018] 1. This utility model uses an insert-type connection between the sliding frame and the sieve plate, which makes it easy to remove the sieve plate from the sliding frame. Furthermore, the sieve plate is limited by a wedge block, which keeps the sieve plate and the sliding frame in a relatively fixed state, thereby improving the efficiency of sieve plate replacement and reducing the labor intensity of manual labor.
[0019] 2. This utility model adjusts the extension length of the electric push rod to rotate the two rotating shafts, changing the tilt angle of the two fixed frames. When the fixed frames rotate, the connecting plates on both sides of the fixed frames slide along the arc surface of the adjacent fixed blocks, ensuring the stability of the fixed frames. By changing the tilt angle of the fixed frames and the sieve plate, the rolling speed of different seeds on the sieve plate is effectively controlled, improving the screening effect of different seeds.
[0020] 3. This utility model uses a motor to drive a circular plate to rotate, which causes two connecting columns to drive adjacent sliding frames to slide back and forth along adjacent fixed frames. The sliding frames drive the sieve plate to move back and forth synchronously. When the seeds fall into the sieve plate, the sieve plate sieves the seeds, thereby extending the contact time between the seeds and the sieve plate. Attached Figure Description
[0021] Figure 1 This is a front view of the seed selection device of an agricultural sowing machine according to the present invention.
[0022] Figure 2 This is a schematic diagram of the structure of the fixed frame and the sieve plate in this utility model;
[0023] Figure 3 This is a rear view schematic diagram of the seed selection box and gears in this utility model;
[0024] Figure 4 This is a structural schematic diagram of the fixing block and connecting plate 1 in this utility model;
[0025] Figure 5 This is an exploded view of the fixed frame and the sliding frame in this utility model;
[0026] Figure 6 This is a cross-sectional view of the fixed frame and the sliding frame in this utility model;
[0027] Figure 7 This is a schematic diagram of the sliding column and wedge block in this utility model;
[0028] Figure 8 This is a schematic diagram of the sliding block and rack in this utility model;
[0029] Figure 9 This is a schematic diagram of the connecting plate 2 and the connecting block in this utility model.
[0030] In the diagram: 1. Support leg; 2. Seed selection box; 3. Enclosed door; 4. Fixing block; 5. Connecting plate one; 6. Fixing frame; 7. Sliding frame; 8. Sieve plate; 9. Fixing plate; 10. Sliding column; 11. Wedge block; 12. Spring; 13. Rotating shaft; 14. Gear; 15. Guide column; 16. Sliding block; 17. Rack; 18. Electric push rod; 19. Connecting column; 20. Connecting plate two; 21. Connecting block; 22. Support plate; 23. Motor; 24. Circular plate; 25. Fixing column. Detailed Implementation
[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0033] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0034] Please see Figures 1-9A seed selection device for agricultural sowing machinery includes a support leg 1, a seed selection box 2 fixedly connected to the support leg 1, a closed door 3 fixedly connected to the front of the seed selection box 2, symmetrically distributed fixing blocks 4 fixedly connected to the inner wall of the seed selection box 2, connecting plates 5 slidably connected to the fixing blocks 4, a fixing frame 6 fixedly connected between two adjacent connecting plates 5, a sliding frame 7 slidably connected to the fixing frame 6, a sieve plate 8 inserted into the sliding frame 7, two fixing plates 9 fixedly connected to the front of the sliding frame 7, and sliding columns slidably connected to the fixing plates 9. 10. A wedge block 11 is fixedly connected to the sliding column 10. A spring 12 is fixedly connected between the wedge block 11 and the adjacent fixed plate 9. Through holes are provided on both sides of the seed selection box 2. An inclined plate is fixedly connected to each through hole of the seed selection box 2. A through groove is provided on the side of the sliding frame 7 near the inclined plate. A rotating structure is provided between the two fixed frames 6. A reciprocating structure is provided on the rear side of the seed selection box 2. Arc-shaped surfaces are provided on the opposite sides of the two adjacent fixed blocks 4. The arc-shaped surfaces of the fixed blocks 4 are in contact with the adjacent connecting plates.
[0035] Please see Figure 3 , Figure 5 , Figure 6 , 8 and Figure 9 The rotating structure includes two rotating shafts 13, both of which are rotatably connected to the rear side of the seed selection box 2. The rotating shafts 13 are fixedly connected to the adjacent fixed frame 6, and gears 14 are fixedly connected to the rotating shafts 13. The central axis of the rotating shafts 13 coincides with the midpoint of the line connecting the two fixed frames 6. Two guide posts 15 are fixedly connected to the rear side of the seed selection box 2, and a sliding block 16 is slidably connected between the two guide posts 15. Two racks 17 are fixedly connected to the sliding block 16. The two racks 17 are centrally symmetrical and mesh with the adjacent gears 14. An electric push rod 18 is fixedly connected to the rear side of the seed selection box 2, and the telescopic end of the electric push rod 18 is fixedly connected to the sliding block 16.
[0036] Please see Figure 3 and Figure 9 The reciprocating structure includes two connecting columns 19, which are slidably connected to the rotating shaft 13. The connecting columns 19 are fixedly connected to the adjacent sliding frame 7. A connecting plate 20 is rotatably connected between the two connecting columns 19. A connecting block 21 is fixedly connected to the connecting plate 20. The connecting block 21 is provided with a through groove. A support plate 22 is fixedly connected to the rear side of the seed box 2. A motor 23 is fixedly connected to the support plate 22. A circular plate 24 is fixedly connected to the output shaft of the motor 23. A fixing column 25 is fixedly connected to the eccentric part of the circular plate 24. The fixing column 25 is slidably connected in the through groove of the connecting block 21.
[0037] Working principle: Before using this device for seed selection, manually open the closed door 3, then select a sieve plate 8 with an appropriate aperture according to the size of the seeds, and then pull the sliding column 10 upward. The sliding column 10 drives the wedge block 11 to move upward, and the spring 12 is compressed, inserting the sieve plate 8 into the sliding frame 7. Release the sliding column 10, and under the elastic force of the spring 12, the wedge block 11 moves downward to reset, limiting the sieve plate 8 and making the sieve plate 8 and the sliding frame 7 relatively fixed. Then close the closed door 3.
[0038] Start the electric push rod 18. Adjust the extension length of the electric push rod 18 according to the volume and shape of the seeds. When the extension end of the electric push rod 18 drives the sliding block 16 to move upward, the sliding block 16 drives the two racks 17 to move upward. The racks 17 drive the adjacent gears 14 to rotate. Since the two racks 17 are centrally symmetrical, the two gears 14 rotate in opposite directions. The gears 14 drive the adjacent rotating shaft 13 to rotate. The rotating shaft 13 drives the adjacent fixed frame 6 to rotate. The fixed frame 6 slides along the arc surface of the adjacent fixed block 4 through the connecting plates 5 on both sides. When the extension end of the electric push rod 18 stops moving, the fixed frame 6 stops swinging. During the above process, the tilt angle of the two fixed frames 6 and the sieve plate 8 decreases. Conversely, when the extension end of the electric push rod 18 moves downward, the tilt angle of the fixed frame 6 increases.
[0039] Then, seeds are stably and continuously fed into the seed selection box 2 from the top via a screw conveyor. The motor 23 is started, and the output shaft of the motor 23 drives the circular plate 24 to rotate circumferentially. The circular plate 24 drives the fixed column 25 to rotate circumferentially. The fixed shaft moves back and forth along the through groove of the connecting block 21. In turn, the connecting block 21 drives the connecting plate to move back and forth. The connecting plate 20 drives the two connecting columns 19 to slide back and forth along the adjacent rotating shaft 13. The connecting columns 19 drive the adjacent sliding frame 7 to slide back and forth along the adjacent fixed frame 6. The sliding frame 7 drives the sieve plate 8 to move back and forth synchronously. When the seeds fall into the sieve plate 8, the sieve plate 8 sieves the seeds. The sieved seeds roll through the through groove of the fixed frame 6 onto the inclined plate of the seed selection box 2 and are then discharged from the seed selection box 2. The seeds that have passed through the sieve plate 8 continue to fall downwards for continuous sieving.
[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A seed selection device for agricultural seeding machinery, comprising support legs (1), characterized in that: A seed selection box (2) is fixedly connected to the support leg (1). A closed door (3) is fixedly connected to the front side of the seed selection box (2). A symmetrically distributed fixing block (4) is fixedly connected to the inner wall of the seed selection box (2). A connecting plate (5) is slidably connected to the fixing block (4). A fixing frame (6) is fixedly connected between two adjacent connecting plates (5). A sliding frame (7) is slidably connected to the fixing frame (6). A sieve plate (8) is inserted into the sliding frame (7). Two fixing plates (9) are fixedly connected to the front side of the sliding frame (7). The fixed plate (9) is slidably connected to a sliding column (10), the sliding column (10) is fixedly connected to a wedge block (11), and a spring (12) is fixedly connected between the wedge block (11) and the adjacent fixed plate (9). Both sides of the seed selection box (2) are provided with through holes, and inclined plates are fixedly connected to the through holes of the seed selection box (2). The sliding frame (7) is provided with a through groove on the side near the inclined plate. A rotating structure is provided between the two fixed frames (6), and a reciprocating structure is provided on the rear side of the seed selection box (2).
2. The seed selection device for agricultural sowing machinery according to claim 1, characterized in that: The two adjacent fixing blocks (4) are provided with arc-shaped surfaces on opposite sides, and the arc-shaped surfaces of the fixing blocks (4) are in contact with the adjacent connecting plates.
3. The seed selection device for agricultural sowing machinery according to claim 1, characterized in that: The rotating structure includes two rotating shafts (13), both of which are rotatably connected to the rear side of the seed selection box (2). The rotating shafts (13) are fixedly connected to the adjacent fixed frame (6), and gears (14) are fixedly connected to the rotating shafts (13).
4. The seed selection device for agricultural sowing machinery according to claim 3, characterized in that: The central axis of the rotating shaft (13) coincides with the midpoint of the line connecting the two fixed frames (6).
5. The seed selection device for agricultural sowing machinery according to claim 3, characterized in that: Two guide posts (15) are fixedly connected to the rear side of the seed selection box (2). A sliding block (16) is slidably connected between the two guide posts (15). Two racks (17) are fixedly connected to the sliding block (16). The two racks (17) are in a centrally symmetrical state. The racks (17) mesh with the adjacent gears (14). An electric push rod (18) is fixedly connected to the rear side of the seed selection box (2). The telescopic end of the electric push rod (18) is fixedly connected to the sliding block (16).
6. The seed selection device for agricultural sowing machinery according to claim 5, characterized in that: The reciprocating structure includes two connecting columns (19), which are slidably connected to the rotating shaft (13). The connecting columns (19) are fixedly connected to the adjacent sliding frame (7), and a connecting plate (20) is rotatably connected between the two connecting columns (19).
7. The seed selection device for agricultural sowing machinery according to claim 6, characterized in that: The connecting plate 2 (20) is fixedly connected to a connecting block (21), the connecting block (21) is provided with a through groove, the rear side of the seed selection box (2) is fixedly connected to a support plate (22), the support plate (22) is fixedly connected to a motor (23), the output shaft of the motor (23) is fixedly connected to a circular plate (24), the eccentric part of the circular plate (24) is fixedly connected to a fixing column (25), and the fixing column (25) is slidably connected in the through groove of the connecting block (21).