A rice harvesting and threshing apparatus
By designing a threshing channel, clamping and conveying components, and a height limit plate in the rice harvesting and threshing equipment, the rice stalks are ensured to contact the drum beating part in a vertical state, which solves the problem of incomplete threshing caused by bent rice stalks and improves threshing efficiency and filter screen filtration speed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YULIN UNIV
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-10
AI Technical Summary
In existing rice harvesting and threshing devices, rice stalks are prone to bending during the threshing process, causing some grains at the front end of the stalks to fail to contact the threshing components, resulting in incomplete threshing.
Design a rice harvesting and threshing device. By setting a threshing channel at the top of the threshing drum, the rice stalks are kept vertical. The clamping and conveying components and height limiting plates ensure that the rice stalks are at a consistent height. Effective contact is achieved by combining the beating part of the drum. An eccentric column and connecting rope are used to accelerate the filtration of the filter screen.
This ensures good contact between the rice grains at the bottom of the rice stalks and the beating part outside the drum, improving the threshing effect. The height limit plate adapts to different rice stalk lengths, and the eccentric column accelerates the filtration of the filter screen, improving the overall threshing efficiency.
Smart Images
Figure CN224473742U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice threshing technology, specifically to a rice harvesting and threshing device. Background Technology
[0002] Threshing equipment is machinery that separates crop grains from stalks, primarily referring to harvesting machinery for grain crops. In an existing feasible millet harvesting and threshing device (patent publication number CN221749007U), a threshing box, threshing assembly, two conveying components, a plate, a screen, and an elastic support assembly are included. The threshing assembly is located inside the threshing box. The side wall of the threshing box, near the two conveying components, has an opening, a feed inlet, and a discharge outlet. The two conveying components clamp and transport the millet ears, allowing them to enter the threshing box through the feed inlet, be threshed by the threshing assembly, and then discharge through the discharge outlet. This threshing device uses a transverse feeding method, resulting in longer contact time between the millet ears and the threshing assembly, more thorough threshing, and thus improved threshing efficiency.
[0003] However, the aforementioned millet harvesting and threshing device has at least the following drawbacks in actual operation: By setting a horizontal strip opening on the side wall of the threshing box as a channel for the movement of rice stalks during threshing, some rice stalks will inevitably bend under vibration or impact from the threshing components during the threshing process. This prevents the grains at the front of these stalks from contacting the high-speed rotating threshing components inside the threshing box, resulting in some rice stalks not being threshed cleanly. To address these problems, this utility model proposes a rice harvesting and threshing device. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rice harvesting and threshing device that can keep the rice stalks vertical as they pass through the threshing channel, thereby ensuring good contact and collision between the grains at the bottom of the stalks and the beating part outside the drum, and improving the threshing effect.
[0005] To achieve the above objectives, this utility model provides a rice harvesting and threshing device to solve the problems mentioned in the background art.
[0006] This utility model is achieved through the following technical solution:
[0007] A rice harvesting and threshing device includes a threshing cylinder, a roller, and a clamping and conveying assembly, wherein: the top of the threshing cylinder has a threshing channel for moving rice stalks, and the two ends of the threshing channel are a rice stalk inlet and a rice stalk outlet, respectively; the roller is rotatably disposed inside the threshing cylinder, and a striking part protrudes from the outside of the roller; the clamping and conveying assembly is configured to convey the rice stalks along the threshing channel.
[0008] Optionally, the clamping and conveying assembly consists of two belt conveyors, which are parallel to each other and arranged on both sides of the threshing channel.
[0009] Optionally, each of the belt conveyors includes a frame, rollers, a conveyor belt, and a first drive device, wherein: the frame is fixed to the threshing drum; two rollers are rotatably connected to the frame; the conveyor belt is connected between the two rollers; and the first drive device is used to drive at least one of the rollers to rotate.
[0010] Optionally, a height restriction plate is provided above the rice straw inlet.
[0011] Optionally, the height limit plate is connected to the threshing cylinder via an adjusting bracket. The adjusting bracket includes a first bracket, a second bracket, and a positioning screw. The first bracket is fixedly connected to the threshing cylinder, the second bracket is slidably connected to the first bracket, the second bracket is connected to the height limit plate, and the positioning screw is connected between the first bracket and the second bracket.
[0012] Optionally, the first support includes an upper limit plate, a lower limit plate, and a sliding rod. The upper limit plate and the lower limit plate are fixedly connected by the two sliding rods, and the lower limit plate is fixed on the threshing cylinder. One end of the second support is connected to the height limit plate, and the other end moves through the upper limit plate. The second support and the upper limit plate are fixed by the positioning screw.
[0013] Optionally, a second driving device for driving the drum to rotate is installed on the outside of one end of the threshing cylinder near the rice straw outlet, and a V-shaped baffle is provided above the second driving device.
[0014] Optionally, a support frame is provided at the bottom of the threshing cylinder, a discharge port is provided at the bottom of the threshing cylinder, a collection trough is placed below the discharge port, and a filter structure for filtering millet is provided above the collection trough.
[0015] Optionally, one end of the roller is fixed with an eccentric column, which is offset from the axis of the roller; the filter structure includes a mesh frame and a filter screen, the filter screen is disposed at the bottom of the mesh frame, the first end of the mesh frame is rotatably connected to the support frame, and the second end of the mesh frame is connected to the eccentric column through a connecting rope.
[0016] Optionally, a material guide port is provided at the second end of the wire frame.
[0017] Compared with the prior art, this utility model provides a rice harvesting and threshing device, which has the following beneficial effects:
[0018] 1. This utility model sets the threshing channel at the top of the threshing cylinder, so that the rice stalks can always remain vertical when passing through the threshing channel, avoiding bending of the rice stalks. This ensures that the grains at the bottom of the rice stalks form good contact and collision with the beating part outside the cylinder, thereby improving the threshing effect.
[0019] 2. This utility model uses a height limiting plate to restrict the height of rice straws when they are put into the rice straw inlet, which ensures that all rice straws entering the inlet are at the same height, so that the grains at the bottom of all rice straws can contact the beating part of the roller, further improving the threshing effect; in addition, by making the height of the height limiting plate adjustable, it is easy to limit the height of rice straws of different lengths.
[0020] 3. By setting an eccentric column and connecting rope, the eccentric column will rotate around the axis of the drum during the threshing process. The eccentric column will intermittently pull the screen frame of the filter structure upward through the pull rope, causing the screen to vibrate up and down, thereby accelerating the filtration speed of the millet on the screen. Attached Figure Description
[0021] Figure 1 A schematic diagram of one-axis view of a rice harvesting and threshing equipment;
[0022] Figure 2 This is a schematic diagram of another isometric view of a rice harvesting and threshing device.
[0023] Figure 3 for Figure 2 A magnified structural diagram at point A;
[0024] Figure 4 This is a schematic diagram of a belt conveyor.
[0025] Figure 5 A schematic front view cross-section of a rice harvesting and threshing equipment;
[0026] Figure 6 This is a schematic diagram of the connection structure between the height limit plate and the adjusting bracket.
[0027] In the diagram: 100, threshing cylinder; 110, threshing channel; 111, rice straw inlet; 112, rice straw outlet; 120, discharge port; 130, support frame; 200, roller; 210, beating section; 300, belt conveyor; 310, frame; 320, roller; 330, conveyor belt; 340, first drive unit; 400, height limit plate; 410, first support; 411, upper limit plate; 412, lower limit plate; 413, slide bar; 420, second support; 421, positioning hole; 430, positioning screw; 500, second drive unit; 510, baffle plate; 600, collection trough; 610, filter structure; 611, mesh frame; 612, filter screen; 613, guide port; 614, rotating shaft; 620, eccentric column; 630, connecting rope. Detailed Implementation
[0028] 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.
[0029] Example: Please refer to Figures 1 to 6 According to an embodiment of the present invention, a rice harvesting and threshing device is provided, which may include a threshing cylinder 100, a drum 200, and a clamping and conveying assembly, wherein: the top of the threshing cylinder 100 is provided with a threshing channel 110 for moving rice straw, and the two ends of the threshing channel 110 are rice straw inlet 111 and rice straw outlet 112, respectively; the drum 200 is rotatably disposed inside the threshing cylinder 100, and the outside of the drum 200 has a slapping part 210 protruding; the clamping and conveying assembly is configured to convey rice straw along the threshing channel 110.
[0030] Using the above method, the rice stalks are placed vertically with the grains facing downwards at the rice stalk inlet 111. The clamping and conveying component clamps the rice stalks at the rice stalk inlet 111 and moves them through the threshing channel 110 to the rice stalk outlet 112. As the rice stalks pass through the threshing channel 110, the drum 200 rotates at high speed inside the threshing cylinder 100. The grains at the lower end of the rice stalks come into contact with the striking part 210 outside the drum 200 and are struck down, thus achieving rice threshing. Therefore, by placing the threshing channel 110 at the top of the threshing cylinder 100, the rice stalks remain vertical as they pass through the threshing channel 110, preventing bending. This ensures good contact and collision between the grains at the lower end of the rice stalks and the striking part 210 outside the drum 200, thereby improving the threshing effect.
[0031] like Figure 1 and Figure 2As shown, in some embodiments, the clamping and conveying assembly consists of two belt conveyors 300, which are parallel to each other and arranged on both sides of the threshing channel 110.
[0032] like Figure 4 As shown, in a specific embodiment, each belt conveyor 300 may include a frame 310, rollers 320, a conveyor belt 330, and a first drive device 340, wherein: the frame 310 is fixed on the threshing drum 100; two rollers 320 are rotatably connected to the frame 310; the conveyor belt 330 is connected between the two rollers 320; the first drive device 340 is used to drive at least one roller 320 to rotate, and the first drive device 340 may be a motor, the stator of the motor is fixed on the frame 310, and the rotor of the motor and the rollers 320 can be connected by transmission components such as belts or gear sets.
[0033] When the above-mentioned clamping and conveying assembly is used, the first driving device 340 drives the roller 320 to rotate, the roller 320 drives the conveyor belt 330 to move, and the conveyor belts 330 of the two belt conveyors 300 move in opposite directions. The rice straw is clamped between the conveyor belts 330 of the two belt conveyors 300, so that the rice straw can be conveyed along the threshing channel 110.
[0034] like Figure 1 and Figure 2 As shown, in some embodiments, a height limiting plate 400 is provided above the rice straw inlet 111. By providing the height limiting plate 400, when rice straw is placed into the rice straw inlet 111, the height of the rice straw can be limited by the height limiting plate 400. This ensures that the height of all rice straws entering the rice straw inlet 111 is consistent, thereby allowing the grains at the bottom of all rice straws to contact the beating part 210 of the roller 200, further improving the threshing effect.
[0035] like Figure 1 , Figure 2 and Figure 6As shown, in some embodiments, the height restriction plate 400 is connected to the threshing cylinder 100 via an adjusting bracket. The adjusting bracket includes a first bracket 410, a second bracket 420, and a positioning screw 430. The first bracket 410 is fixedly connected to the threshing cylinder 100, and the second bracket 420 is slidably connected to the first bracket 410 and connected to the height restriction plate 400. The positioning screw 430 is connected between the first bracket 410 and the second bracket 420. Tightening the positioning screw 430 fixes the first bracket 410 and the second bracket 420, and loosening the positioning screw 430 releases the fixation between the first bracket 410 and the second bracket 420. This configuration allows the height of the height restriction plate 400 to be adjusted, thus facilitating the height restriction of rice stalks of different lengths. Specifically, when it is necessary to adjust the height of the height limit plate 400, loosen the positioning screw 430 to allow the second bracket 420 to slide along the first bracket 410, adjust the height of the height limit plate 400, and after adjusting the height limit plate 400 to a suitable height, tighten the positioning screw 430 to fix the height of the height limit plate 400.
[0036] In one specific embodiment, the first support 410 includes an upper limit plate 411, a lower limit plate 412, and a sliding rod 413. The upper limit plate 411 and the lower limit plate 412 are fixedly connected by two sliding rods 413, and the lower limit plate 412 is fixed on the threshing cylinder 100. One end of the second support 420 is connected to the height limit plate 400, and the other end moves through the upper limit plate 411. The second support 420 and the upper limit plate 411 are fixed by positioning screws 430.
[0037] Specifically, the second bracket 420 can be fixed to the height limit bar by welding;
[0038] To better secure the second bracket 420 and the upper limit plate 411, multiple positioning holes 421 can be provided on the second bracket 420. The multiple positioning holes 421 are arranged at intervals along the length of the second bracket 420. When securing the second bracket 420 and the upper limit plate 411, the end of the positioning screw 430 can be inserted into the positioning hole 421.
[0039] In order to make the height limit plate 400 move more stably when adjusting its height, the slide bar 413 can be moved through the height limit plate 400.
[0040] like Figure 1As shown, in some embodiments, a second drive device 500 for driving the rotation of the drum 200 is installed on the outside of the end of the threshing drum 100 near the straw outlet 112. The second drive device 500 can be a motor or an engine. A V-shaped baffle 510 is provided above the second drive device 500. The baffle 510 can be fixed to the threshing drum 100 by screws or welding. By placing the second drive device 500 on the outside of the threshing drum 100, the space occupied inside the threshing drum 100 can be reduced. The V-shaped baffle 510 can prevent the threshed straw from falling onto the second drive device 500.
[0041] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, a support frame 130 is provided at the bottom of the threshing cylinder 100, and a discharge port 120 is provided at the bottom of the threshing cylinder 100. A collection trough 600 is placed below the discharge port 120, and a filter structure 610 for filtering millet is provided above the collection trough 600. The threshed millet is discharged from the discharge port 120, filtered by the filter structure 610, and then falls into the collection trough 600 for collection. Since the discharged millet inevitably contains some straw fragments, the filter structure 610 can intercept these straw fragments, thereby achieving filtration and screening of the millet.
[0042] like Figure 1 , Figure 2 and Figure 3 As shown, in order to accelerate the filtration speed of millet on the filter structure 610, in some embodiments, an eccentric column 620 is fixed at one end of the roller 200, and the eccentric column 620 is arranged off-center from the axis of the roller 200; the filter structure 610 includes a mesh frame 611 and a filter screen 612, the filter screen 612 is disposed at the bottom of the mesh frame 611, the first end of the mesh frame 611 is rotatably connected to the support frame 130, and the second end of the mesh frame 611 is connected to the eccentric column 620 through a connecting rope 630.
[0043] Specifically, the first end of the frame 611 can be rotatably connected to the support frame 130 through a rotating connection structure such as a pivot 614, a hinge, or a hinge; the end of the connecting rope 630 connected to the eccentric column 620 can be an annular end, which is movably sleeved on the outside of the eccentric column 620.
[0044] By setting up an eccentric column 620 and a connecting rope 630, during the threshing process, the eccentric column 620 will rotate around the axis of the drum 200. The eccentric column 620 will intermittently pull the mesh frame 611 of the filter structure 610 upward through the pull rope, causing the filter screen 612 to vibrate up and down, thereby accelerating the filtration speed of the millet on the filter screen 612.
[0045] like Figure 1 and Figure 2As shown, in some embodiments, a feed inlet 613 is provided at the second end of the mesh frame 611. By providing the feed inlet 613, the straw shavings intercepted on the filter screen 612 inside the mesh frame 611 can be quickly discharged, reducing the amount of straw shavings on the filter screen 612 and ensuring the filtration effect of the filter screen 612.
[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rice harvesting and threshing device, characterized in that, The device includes a threshing cylinder (100), a roller (200), and a clamping and conveying assembly, wherein: the top of the threshing cylinder (100) is provided with a threshing channel (110) for moving rice straw, and the two ends of the threshing channel (110) are a rice straw inlet (111) and a rice straw outlet (112), respectively; the roller (200) is rotatably disposed inside the threshing cylinder (100), and the outside of the roller (200) has a slapping part (210); the clamping and conveying assembly is configured to convey the rice straw along the threshing channel (110).
2. The rice harvesting and threshing equipment according to claim 1, characterized in that: The clamping and conveying assembly consists of two belt conveyors (300), which are parallel to each other and arranged on both sides of the threshing channel (110).
3. The rice harvesting and threshing equipment according to claim 2, characterized in that: Each of the belt conveyors (300) includes a frame (310), rollers (320), a conveyor belt (330), and a first drive device (340), wherein: the frame (310) is fixed on the threshing drum (100); two rollers (320) are rotatably connected to the frame (310); the conveyor belt (330) is connected between the two rollers (320); and the first drive device (340) is used to drive at least one of the rollers (320) to rotate.
4. The rice harvesting and threshing equipment according to claim 1, characterized in that: A height restriction plate (400) is installed above the rice straw inlet (111).
5. The rice harvesting and threshing equipment according to claim 4, characterized in that: The height limit plate (400) is connected to the threshing cylinder (100) via an adjusting bracket. The adjusting bracket includes a first bracket (410), a second bracket (420), and a positioning screw (430). The first bracket (410) is fixedly connected to the threshing cylinder (100), the second bracket (420) is slidably connected to the first bracket (410), the second bracket (420) is connected to the height limit plate (400), and the positioning screw (430) is connected between the first bracket (410) and the second bracket (420).
6. The rice harvesting and threshing equipment according to claim 5, characterized in that: The first bracket (410) includes an upper limit plate (411), a lower limit plate (412), and a sliding rod (413). The upper limit plate (411) and the lower limit plate (412) are fixedly connected by the two sliding rods (413). The lower limit plate (412) is fixed on the threshing cylinder (100). One end of the second bracket (420) is connected to the height limit plate (400), and the other end moves through the upper limit plate (411). The second bracket (420) and the upper limit plate (411) are fixed by the positioning screw (430).
7. The rice harvesting and threshing equipment according to claim 1, characterized in that: A second driving device (500) for driving the drum (200) to rotate is installed on the outside of the end of the threshing drum (100) near the rice straw outlet (112), and a V-shaped baffle (510) is provided above the second driving device (500).
8. The rice harvesting and threshing equipment according to claim 1, characterized in that: The bottom of the threshing cylinder (100) is provided with a support frame (130), the bottom of the threshing cylinder (100) is provided with a discharge port (120), a collection trough (600) is placed below the discharge port (120), and a filter structure (610) for filtering millet is provided above the collection trough (600).
9. The rice harvesting and threshing equipment according to claim 8, characterized in that: One end of the roller (200) is fixed with an eccentric column (620), which is offset from the axis of the roller (200); the filter structure (610) includes a mesh frame (611) and a filter screen (612), the filter screen (612) is set at the bottom of the mesh frame (611), the first end of the mesh frame (611) is rotatably connected to the support frame (130), and the second end of the mesh frame (611) is connected to the eccentric column (620) through a connecting rope (630).
10. The rice harvesting and threshing equipment according to claim 9, characterized in that: The second end of the wire frame (611) is provided with a material guide port (613).