Adjustable sieve pore mechanism for feeding hopper of threshing machine
By designing a detachable sieve plate and an upper and lower vibration mechanism, the problems of sieve blockage and impurity mixing are solved, and the sieve holes are cleaned and separated by vibration, thereby improving threshing efficiency and grain purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-03
AI Technical Summary
The sieve mechanism of existing threshers is difficult to disassemble and clean after threshing, which leads to sieve blockage. In addition, the lack of vibration function during threshing affects threshing efficiency and grain purity.
An adjustable screen hole mechanism for a thresher feed hopper was designed. The screen hole plate can be disassembled and cleaned through bevel gears, bevel gear rings, rotating grooves and snap-fit mechanisms, and the screen hole mechanism can be reciprocated up and down through worm gears, worm wheels, rotating shafts and bidirectional synchronous motors.
It effectively removes impurities from the sieve holes, prevents clogging, improves the sieve hole flow, and separates impurities from the grains through vibration, thereby improving the purity and quality of the grains.
Smart Images
Figure CN224069240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen hole mechanism technology, specifically to an adjustable screen hole mechanism for a thresher feed hopper. Background Technology
[0002] Before the crops enter the threshing machine, impurities can be screened out through the adjustable screen hole mechanism, improving the threshing quality. Different crops have different characteristics such as particle size and shape. By adjusting the size of the screen holes, the threshing machine can better adapt to the threshing work of different crops, realize multiple uses of one machine, and improve the efficiency and economy of agricultural machinery.
[0003] The existing technology has the following problems:
[0004] The existing equipment cannot disassemble and clean the screen plate after threshing. Residual crop debris and impurities will gradually accumulate and clog the screen holes, making it difficult for crops to pass through the screen holes smoothly in the subsequent threshing process, resulting in reduced threshing efficiency. Due to the clogging of the screen holes, the throughput may decrease significantly and the threshing time will be extended. In addition, the existing equipment cannot vibrate the screen hole mechanism up and down during the threshing process. Without vibration, some impurities may mix with the material and cannot be effectively screened out, affecting the screening effect and the purity of the material. Utility Model Content
[0005] This invention provides an adjustable screen hole mechanism for the feed hopper of a thresher to solve the problems existing in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] An adjustable screen hole mechanism for a thresher feed hopper includes a feed hopper, a U-shaped bracket fixedly connected to the upper side of the feed hopper, a movable seat provided on the inner surface of the feed hopper, a movable groove formed on the inner surface of the feed hopper, the inner surface of the movable groove being movably connected to the movable seat, two connecting columns fixedly connected to the upper side of the movable seat, and a rotating groove formed on the inner surface of the movable seat.
[0008] A further improvement of this utility model is that: a drive motor is fixedly connected to the upper side of the movable seat, a bevel gear is fixedly connected to the output shaft of the drive motor, a rotating ring is rotatably connected to the inner surface of the rotating groove, a bevel gear ring is fixedly connected to the upper side of the rotating ring, and the outer wall of the bevel gear meshes with the bevel gear ring.
[0009] A further improvement of this utility model is that: a fixed sieve plate is fixedly connected to the lower part of the inner surface of the movable seat, a sieve hole plate is movably connected to the inner surface of the rotating ring, the upper side of the fixed sieve plate is movably connected to the sieve hole plate, and two snap-fit mechanisms are provided on the upper side of the sieve hole plate.
[0010] A further improvement of the present invention is that the snap-fit mechanism includes a rotating column, a fixing plate is fixedly connected to the outer wall of the rotating column, two threaded holes are opened on the upper side of the screen plate, a bolt is provided on the upper side of the fixing plate, and the outer wall of the bolt is threadedly connected to the threaded hole.
[0011] A further improvement of this utility model is that: a bidirectional synchronous motor is fixedly connected to the upper side of the U-shaped bracket, and a worm is fixedly connected to both output ends of the bidirectional synchronous motor. A worm wheel is meshed with the outer wall of the worm, and two support plates are fixedly connected to the upper side of the U-shaped bracket. The outer wall of the worm is rotatably connected to the support plates.
[0012] A further improvement of this utility model is that: a rotating shaft is fixedly connected to the front side of the worm gear, a turntable is fixedly connected to the outer wall of the rotating shaft, a rotating rod is rotatably connected to the eccentric part of the turntable, the other end of the rotating rod is rotatably connected to a connecting column, and the outer wall of the rotating shaft is rotatably connected to a U-shaped bracket.
[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0014] 1. This utility model provides an adjustable screen hole mechanism for the feed hopper of a thresher. Through the cooperation of rotating column, fixed plate, bolt, threaded hole, fixed screen plate, screen hole plate, rotating ring and conical tooth ring, the screen hole plate can be disassembled and cleaned after threshing. After threshing, crop debris, dust, straw and other impurities are easy to adhere to the screen holes. By disassembling and cleaning, these residues can be completely removed, avoiding the accumulation of impurities that cause screen hole blockage and ensuring the smooth flow of the screen holes.
[0015] 2. This utility model provides an adjustable screen hole mechanism for the feed hopper of a thresher. Through the cooperation of a worm gear, support plate, worm wheel, rotating shaft, turntable, rotating rod and bidirectional synchronous motor, the screen hole mechanism can be vibrated up and down during the threshing process. The vibration helps to completely separate impurities from the grains, reduce the amount of impurities mixed into the threshed grains, and improve the purity and quality of the grains. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a partial structural schematic diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the snap-fit structure of this utility model;
[0019] Figure 4This is a partial structural cross-sectional schematic diagram of the present invention;
[0020] Figure 5 This is a schematic diagram of the vibration structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the rotating ring structure of this utility model;
[0022] Figure 7 This is a schematic diagram of the perforated plate structure of this utility model.
[0023] In the diagram: 1. Feed hopper; 2. Movable seat; 3. U-shaped bracket; 4. Connecting column; 5. Drive motor; 6. Bevel gear; 7. Fixed screen plate; 8. Screen hole plate; 9. Rotating ring; 10. Bevel gear ring; 11. Snap-fit mechanism; 12. Movable groove; 13. Rotating groove; 14. Worm gear; 15. Support plate; 16. Worm wheel; 17. Rotating shaft; 18. Turntable; 19. Rotating rod; 20. Bidirectional synchronous motor; 111. Rotating column; 112. Fixed plate; 113. Bolt; 114. Threaded hole. Detailed Implementation
[0024] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:
[0025] like Figure 1 As shown, this utility model provides an adjustable screen hole mechanism for the feed hopper of a thresher, including a feed hopper 1. A U-shaped bracket 3 is fixedly connected to the upper side of the feed hopper 1. A movable seat 2 is provided on the inner surface of the feed hopper 1. A movable groove 12 is opened on the inner surface of the feed hopper 1. The inner surface of the movable groove 12 is movably connected to the movable seat 2. Two connecting columns 4 are fixedly connected to the upper side of the movable seat 2. A rotating groove 13 is opened on the inner surface of the movable seat 2. The feed hopper 1 is the inlet for materials to enter the thresher. The U-shaped bracket 3 plays the role of supporting and fixing related components, so that it forms a stable overall structure with the feed hopper 1. The movable seat 2 is set in the feed hopper 1 and is movably connected to the feed hopper 1 through the movable groove 12, so that the movable seat 2 can move within a certain range in the feed hopper 1. The connecting columns 4 are fixed on the upper side of the movable seat 2 for connecting other components. The rotating groove 13 is opened on the inner surface of the movable seat 2 to provide space for the rotation of the rotating ring 9.
[0026] like Figure 2-3As shown, this utility model provides a technical solution: Preferably, a drive motor 5 is fixedly connected to the upper side of the movable seat 2, a bevel gear 6 is fixedly connected to the output shaft of the drive motor 5, a rotating ring 9 is rotatably connected to the inner surface of the rotating groove 13, a bevel gear ring 10 is fixedly connected to the upper side of the rotating ring 9, the outer wall of the bevel gear 6 meshes with the bevel gear ring 10, a fixed sieve plate 7 is fixedly connected to the lower part of the inner surface of the movable seat 2, a sieve hole plate 8 is movably connected to the inner surface of the rotating ring 9, the upper side of the fixed sieve plate 7 is movably connected to the sieve hole plate 8, two snap-fit mechanisms 11 are provided on the upper side of the sieve hole plate 8, each snap-fit mechanism 11 includes a rotating column 111, a fixed plate 112 is fixedly connected to the outer wall of the rotating column 111, two threaded holes 114 are opened on the upper side of the sieve hole plate 8, a bolt 113 is provided on the upper side of the fixed plate 112, and the outer wall of the bolt 113 is threadedly connected to the threaded holes 114. When the drive motor 5 is working... Its output shaft drives the bevel gear 6 to rotate. Since the bevel gear 6 is meshed with the bevel gear ring 10, the rotation of the bevel gear 6 will drive the bevel gear ring 10 to rotate, which in turn causes the rotating ring 9, which is fixedly connected to the bevel gear ring 10, to rotate in the rotating groove 13. The fixed screen plate 7 is fixed on the lower part of the inner surface of the movable seat 2, which plays a preliminary screening role. The screen hole plate 8 is movably connected to the rotating ring 9 and the fixed screen plate 7. When it is necessary to disassemble and clean the screen hole plate 8, unscrew the bolt 113 so that it is connected to the threaded hole 1. 14. Separate, then rotate the rotating column 111 to drive the fixed plate 112 to rotate, and remove the screen plate 8 from the rotating ring 9 for cleaning. During installation, put the screen plate 8 into the rotating ring 9, rotate the rotating column 111 to align the fixed plate 112 with the threaded hole 114 on the screen plate 8, and then tighten the bolt 113 to fix it. This realizes the detachable cleaning of the screen plate 8, which can thoroughly remove agricultural debris, dust, straw and other impurities attached to the screen holes, avoid screen hole blockage, and ensure the smooth flow of the screen holes.
[0027] like Figure 4-7As shown, this utility model provides a technical solution: Preferably, a bidirectional synchronous motor 20 is fixedly connected to the upper side of the U-shaped bracket 3. Worms 14 are fixedly connected to both output ends of the bidirectional synchronous motor 20. A worm wheel 16 is meshed with the outer wall of the worm 14. Two support plates 15 are fixedly connected to the upper side of the U-shaped bracket 3. The outer wall of the worm 14 is rotatably connected to the support plates 15. A rotating shaft 17 is fixedly connected to the front side of the worm wheel 16. A turntable 18 is fixedly connected to the outer wall of the rotating shaft 17. A rotating rod 19 is rotatably connected to the eccentric part of the turntable 18. The other end of the rotating rod 19 is rotatably connected to the connecting column 4. The outer wall of the rotating shaft 17 is rotatably connected to the U-shaped bracket 3. The bidirectional synchronous motor 20 is then started. Then, its two output ends drive the worm 14 to rotate. Since the worm 14 is meshed with the worm wheel 16, the rotation of the worm 14 will drive the worm wheel 16 to rotate. When the worm wheel 16 rotates, it drives the rotating shaft 17 fixedly connected to it to rotate, which in turn causes the turntable 18 fixed on the rotating shaft 17 to rotate. The rotating rod 19 rotatably connected to the eccentric part of the turntable 18 will make up-and-down reciprocating motion in the vertical direction as the turntable 18 rotates. The other end of the rotating rod 19 is rotatably connected to the connecting column 4, thereby driving the movable seat 2 to vibrate up and down in the feed hopper 1. Therefore, during the threshing process, the screen hole mechanism vibrates up and down. Vibration helps to completely separate impurities from the grains, reduce the impurities mixed into the threshed grains, and improve the purity and quality of the grains.
[0028] The working principle of the adjustable screen hole mechanism in the feed hopper of this thresher will be explained in detail below.
[0029] like Figure 1-7As shown, when the drive motor 5 is working, its output shaft drives the bevel gear 6 to rotate. Since the bevel gear 6 is meshed with the bevel gear ring 10, the rotation of the bevel gear 6 will drive the bevel gear ring 10 to rotate, which in turn causes the rotating ring 9, which is fixedly connected to the bevel gear ring 10, to rotate in the rotating groove 13. The fixed screen plate 7 is fixed on the lower part of the inner surface of the movable seat 2, which plays a preliminary screening role. The screen hole plate 8 is movably connected to the rotating ring 9 and the fixed screen plate 7. When it is necessary to disassemble and clean the screen hole plate 8, unscrew the bolt 113 to separate it from the threaded hole 114, and then rotate the rotating column 111 to drive the fixed plate 112 to rotate, so that the screen hole plate 8 can be taken out from the rotating ring 9 for cleaning. During installation, the screen hole plate 8 is placed into the rotating ring 9, the rotating column 111 is rotated to align the fixed plate 112 with the threaded hole 114 on the screen hole plate 8, and then the bolt 113 is tightened to fix it. This realizes the detachable cleaning of the screen hole plate 8, which can thoroughly clean it. The screen holes are protected from agricultural debris, dust, straw, and other impurities to prevent clogging and ensure unobstructed flow. After the bidirectional synchronous motor 20 starts, its two output ends drive the worm gear 14 to rotate. Since the worm gear 14 is meshed with the worm wheel 16, its rotation drives the worm wheel 16 to rotate. The rotation of the worm wheel 16 drives the rotating shaft 17, which is fixedly connected to it, to rotate. This, in turn, causes the turntable 18, fixed on the shaft 17, to rotate. The rotating rod 19, eccentrically connected to the turntable 18, moves vertically up and down as the turntable 18 rotates. The other end of the rotating rod 19 is rotatably connected to the connecting column 4, causing the movable seat 2 to vibrate up and down within the feed hopper 1. Therefore, during the threshing process, the screen mechanism vibrates up and down, which helps to completely separate impurities from the grains, reducing the amount of impurities mixed into the threshed grains and improving the purity and quality of the grains.
[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A threshing machine feed hopper adjustable screen mechanism characterised in that: Including the feeding hopper (1), the upper side of the feeding hopper (1) is fixedly connected with the U-shaped support (3), the inner surface of the feeding hopper (1) is provided with the movable seat (2), the inner surface of the feeding hopper (1) is provided with the movable groove (12), the inner surface of the movable groove (12) is movably connected with the movable seat (2), the upper side of the movable seat (2) is fixedly connected with two connecting columns (4), and the inner surface of the movable seat (2) is provided with the rotating groove (13).
2. A threshing machine feed hopper adjustable sieve mechanism according to claim 1 wherein: The upper side of the movable seat (2) is fixedly connected with the driving motor (5), the output shaft of the driving motor (5) is fixedly connected with the bevel gear (6), the inner surface of the rotating groove (13) is rotatably connected with the rotating ring (9), the upper side of the rotating ring (9) is fixedly connected with the bevel gear ring (10), and the outer wall of the bevel gear (6) is meshedly connected with the bevel gear ring (10).
3. A threshing machine feed hopper adjustable sieve mechanism according to claim 2 wherein: The inner surface of the movable seat (2) is fixedly connected with the fixed sieve plate (7), the inner surface of the rotating ring (9) is movably connected with the sieve hole plate (8), the upper side of the fixed sieve plate (7) is movably connected with the sieve hole plate (8), and the upper side of the sieve hole plate (8) is provided with two clamping mechanisms (11).
4. A threshing machine feed hopper adjustable sieve mechanism according to claim 3 wherein: The clamping mechanism (11) comprises a rotating column (111), the outer wall of the rotating column (111) is fixedly connected with a fixed plate (112), the upper side of the sieve hole plate (8) is provided with two threaded holes (114), the upper side of the fixed plate (112) is provided with a bolt (113), and the outer wall of the bolt (113) is screwedly connected with the threaded hole (114).
5. A threshing machine feed hopper adjustable sieve mechanism as claimed in claim 1 wherein: The upper side of the U-shaped support (3) is fixedly connected with the bidirectional synchronous motor (20), both output ends of the bidirectional synchronous motor (20) are fixedly connected with the worm (14), the outer wall of the worm (14) is meshedly connected with the worm wheel (16), the upper side of the U-shaped support (3) is fixedly connected with two supporting plates (15), and the outer wall of the worm (14) is rotatably connected with the supporting plate (15).
6. A threshing machine feed hopper adjustable sieve mechanism according to claim 5 wherein: The front side of the worm wheel (16) is fixedly connected with the rotating shaft (17), the outer wall of the rotating shaft (17) is fixedly connected with the rotating disc (18), the eccentric portion of the rotating disc (18) is rotatably connected with the rotating rod (19), the other end of the rotating rod (19) is rotatably connected with the connecting column (4), and the outer wall of the rotating shaft (17) is rotatably connected with the U-shaped support (3).