A rice threshing and separating platform

Abstract

The utility model relates to rice threshing technical field especially relates to a rice threshing separation platform, including platform body, the surface fixed mounting of platform body has the threshing machine body, the inside fixed mounting of threshing machine body has the output frame, the surface of output frame is equipped with filter structure, filter structure includes servo motor, the surface of servo motor is connected with output frame fixedly, the fixed mounting of pivot of servo motor has the filter screen, the inside sliding connection of filter screen has the limit support, the limit support slidingly penetrates output frame, the surface of limit support is equipped with square hole, the inner wall sliding connection of square hole has square plate, the surface of square plate is connected with output frame fixedly, the utility model discloses through filter structure, can filter the rice straw that remains in the rice after threshing, guarantees the purity of rice particle, has improved the quality of rice, the subsequent processing utilization of convenience.

Description

Technical Field

[0001] This utility model relates to the field of rice threshing technology, and in particular to a rice threshing and separation platform. Background Technology

[0002] The rice threshing and separation platform is a key piece of equipment for rice harvesting. Its core function is to thresh rice ears and separate grains, straw and impurities. After threshing by mechanical impact, the grains are purified through multiple layers of airflow and sieving to obtain clean grains.

[0003] For example, patent number CN117356256 B discloses a threshing device for an all-around rice harvester with a threshing screen, including a threshing box and a threshing drum. The threshing drum is rotatably installed inside the threshing box, and a first screen is fixedly installed at the bottom of the threshing box. Movable components are provided on both sides of the first screen, including a positioning platform, a second screen, a positioning rod, and a docking ring. In this invention, an electric cylinder changes the angle of the adjusting rod via a synchronous connecting rod, causing the second screen to rotate around the positioning rod as the center. This separates the second screen from the first screen and moves it to both sides of the threshing box, expanding the screening area. Thus, when the threshing drum knocks the grains away, it achieves all-around screening of grains and husks, thereby solving the problem of some grains not falling onto the first screen and being squeezed away by subsequent rice grains, thus alleviating resource waste to some extent.

[0004] For example, patent number CN110859089A discloses an agricultural threshing machine device, including an axially vertical cylinder with an open top. A lower support hydraulic cylinder is eccentrically fixed at the bottom of the cylinder. The piston rod of the lower support hydraulic cylinder is vertically upward and fixed to a support base. A motor is located inside the support base, and a support plate is positioned above the support base. The bottom center of the support plate is fixed to the motor output shaft. A cylinder is connected to the top center of the support plate, and an upper pressure plate is encircled by the cylinder. An upper platform is connected to the top of the cylinder, and a bracket is also connected to the top of the upper platform. The piston rod of the upper hydraulic cylinder at the top of the bracket is vertically downward and fixedly connected to an upper connecting plate. Multiple connecting rods passing through the upper platform connect the upper pressure plate and the upper connecting plate. An arc-shaped groove is provided on the inner wall of the cylinder corresponding to the eccentric direction of the lower support hydraulic cylinder, and multiple axially vertical rubber rollers are rotatably installed within the arc-shaped groove. This invention reduces the labor intensity of threshing operations, improves work efficiency, and ensures complete separation of rice straw and rice grains after threshing.

[0005] However, existing rice threshing equipment does not completely separate rice grains from rice straw during the threshing process, making it easy for rice straw to remain mixed in with the threshed rice. This necessitates a secondary separation process, affecting the quality of the rice and its subsequent processing and utilization. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a rice threshing and separation platform, which solves the problem that some rice threshing equipment does not completely separate rice from rice straw during the threshing process, resulting in rice straw being mixed in with the threshed rice, requiring secondary separation operations and affecting the quality of the rice and its subsequent processing and utilization.

[0007] The technical solution of this utility model is as follows: a rice threshing and separating platform, comprising a platform body, a threshing machine body fixedly installed on the surface of the platform body, an output frame fixedly installed inside the threshing machine body, a filter structure provided on the surface of the output frame, the filter structure including a servo motor, the surface of the servo motor fixedly connected to the output frame, a filter screen fixedly installed on the shaft of the servo motor, a limit frame slidably connected inside the filter screen, the limit frame slidably passing through the output frame, a square hole opened on the surface of the limit frame, a square plate slidably connected to the inner wall of the square hole, the surface of the square plate fixedly connected to the output frame, and a pressing rod threaded inside the limit frame, the surface of the pressing rod abutting against the square plate.

[0008] Preferably, two support plates are fixedly installed on the surface of the threshing machine body, and support rods are rotatably inserted inside the support plates. Fans are rotatably connected to the surfaces of the two support rods, and a retaining sleeve is fitted on the arc surface of the support rod. The retaining sleeve is an elastic sleeve and is located between the support plate and the fan.

[0009] Preferably, two first springs are fixedly installed on the surface of the limiting frame, and the end of the first spring away from the limiting frame is fixedly connected to the output frame.

[0010] Preferably, a circular plate is fixedly installed at the end of the square plate away from the output frame, and the size of the circular plate is larger than the size of the square hole.

[0011] Preferably, the surface of the threshing machine body is provided with a support structure, the support structure including two upright plates, the surfaces of the two upright plates are fixedly connected to the threshing machine body, a bearing frame is rotatably connected to the surfaces of the two upright plates, a plurality of limiting grooves are opened on the surface of the bearing frame, an insert rod is slidably inserted inside the upright plate, a balance plate is fixedly installed on the surface of the insert rod, a second spring is sleeved on the arc surface of the insert rod, the two ends of the second spring are fixedly connected to the upright plate and the balance plate respectively, and the size of the insert rod is adapted to the size of the limiting groove.

[0012] Preferably, several of the limiting grooves are evenly distributed on the surface of the support frame.

[0013] Preferably, an acrylic transparent plate is fixedly installed inside the support frame.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model, by setting a filtration structure, can filter out the rice straw remaining in the rice after threshing, ensuring the purity of the rice grains, improving the quality of the rice, and facilitating subsequent processing and utilization.

[0016] 2. This utility model, by setting up a support structure, can flexibly adjust the height of the inlet support frame of the thresher according to the height of different operators, effectively avoiding problems such as excessive bending and strenuous tiptoeing caused by height differences. It not only reduces operator fatigue, but also improves the accuracy and efficiency of rice pouring, ensuring that the threshing operation can be carried out smoothly and efficiently. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0018] Figure 2 This utility model is shown. Figure 1 A schematic diagram of the side view structure;

[0019] Figure 3 This utility model is shown. Figure 2 Enlarged view of point A;

[0020] Figure 4 This utility model is shown. Figure 2 Enlarged view of point B;

[0021] Figure 5 This utility model is shown. Figure 2 Enlarged view of point C.

[0022] Explanation of reference numerals in the attached drawings: 1. Platform body; 2. Threshing machine body; 3. Output frame; 4. Filter structure; 401. Support plate; 402. Fan; 403. Support rod; 404. Sleeve; 405. Servo motor; 406. Filter screen; 407. Limiting frame; 408. Square plate; 409. Round plate; 410. First spring; 411. Extrusion rod; 412. Square hole; 5. Support structure; 51. Bearing frame; 52. Acrylic transparent plate; 53. Vertical plate; 54. Limiting groove; 55. Insert rod; 56. Balance plate; 57. Second spring. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1- Figure 5 This utility model provides an embodiment: a rice threshing and separating platform, including a platform body 1, a threshing machine body 2 fixedly installed on the surface of the platform body 1, an output frame 3 fixedly installed inside the threshing machine body 2, a filter structure 4 provided on the surface of the output frame 3, and a support structure 5 provided on the surface of the threshing machine body 2.

[0025] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 In this embodiment, the filter structure 4 includes a servo motor 405. The surface of the servo motor 405 is fixedly connected to the output frame 3. A filter screen 406 is fixedly mounted on the shaft of the servo motor 405. A limit frame 407 is slidably connected inside the filter screen 406. The limit frame 407 slides through the output frame 3. A square hole 412 is opened on the surface of the limit frame 407. A square plate 408 is slidably connected to the inner wall of the square hole 412. The surface of the square plate 408 is fixedly connected to the output frame 3. A pressing rod 411 is threaded inside the limit frame 407. The surface of the pressing rod 411 abuts against the square plate 408. When threshing rice using the rice threshing and separation platform, the limit frame 407 is first slid away from the filter screen 406. Move in direction 6. After the limiting frame 407 moves a certain distance, it slides out of the filter screen 406. Then, rotate the squeezing rod 411 and move it closer to the square plate 408. After the squeezing rod 411 moves a certain distance, its surface squeezes the square plate 408. At this time, the limiting frame 407 and the square plate 408 are fixed together. The threshing machine can then be started to thresh the rice. The threshed rice will flow out from the output frame 3. The rice straw remaining in the threshed rice will be filtered by the filter screen 406. When there is a lot of filtered rice straw, start the servo motor 405. The shaft of the servo motor 405 drives the filter screen 406 to rotate. When the filter screen 406 is at a horizontal angle, the filtered rice straw can be removed.

[0026] Two support plates 401 are fixedly installed on the surface of the threshing machine body 2. Support rods 403 are rotatably inserted inside the support plates 401. Fans 402 are rotatably connected to the surfaces of the two support rods 403. A retainer 404 is fitted on the arc surface of the support rods 403. The retainer 404 is an elastic sleeve and is located between the support plates 401 and the fans 402. The fans 402 can blow the rice straw off the horizontal filter screen 406.

[0027] Two first springs 410 are fixedly installed on the surface of the limit frame 407. The end of the first spring 410 away from the limit frame 407 is fixedly connected to the output frame 3. The spring can drive the limit frame 407 to move closer to the limit frame 407.

[0028] A circular plate 409 is fixedly installed at the end of the square plate 408 away from the output frame 3. The size of the circular plate 409 is larger than the size of the square hole 412. The circular plate 409 can prevent the limit frame 407 from sliding out of the surface of the square plate 408.

[0029] Please see Figure 1 - Figure 3 In this embodiment, the support structure 5 includes two upright plates 53, the surfaces of which are fixedly connected to the threshing machine body 2. A support frame 51 is rotatably connected to the surfaces of the two upright plates 53. Several limiting grooves 54 are formed on the surface of the support frame 51. A rod 55 is slidably inserted into the interior of each upright plate 53. A balance plate 56 is fixedly mounted on the surface of the rod 55. A second spring 57 is fitted onto the arc surface of the rod 55. The two ends of the second spring 57 are fixedly connected to the upright plate 53 and the balance plate 56, respectively. The size of the rod 55 matches the size of the limiting grooves 54. When the threshing machine is needed to thresh rice, the balance plate 56 is slid away from the upright plate 53. As the machine moves, it causes the insertion rod 55 to slide. After sliding a certain distance, the insertion rod 55 slides out of the inner wall of the upper limit groove 54 of the support frame 51. At this time, the support frame 51 is no longer fixed. Then, the support frame 51 is rotated. After the support frame 51 is rotated to the required angle, the rotation of the support frame 51 is stopped. Then, the balance plate 56 is released. Under the tension of the second spring 57, the balance plate 56 slides towards the support frame 51. While the balance plate 56 is sliding, it causes the insertion rod 55 to slide. After sliding a certain distance, the insertion rod 55 is inserted into the inner wall of the corresponding limit groove 54 on the support frame 51. At this time, the support frame 51 is fixed. At this time, the rice can be poured into the threshing machine along the support frame 51.

[0030] Several limiting grooves 54 are evenly distributed on the surface of the support frame 51. The evenly distributed limiting grooves 54 make it easy for staff to judge the adjustment angle of the support frame 51.

[0031] An acrylic transparent plate 52 is fixedly installed inside the support frame 51. After the support frame 51 blocks the entrance of the threshing machine, the acrylic transparent plate 52 allows the staff to easily observe the threshing process inside the threshing machine.

[0032] The working principle is as follows: Before starting the threshing operation, the angle of the support frame 51 needs to be adjusted according to the operator's height to ensure convenient feeding. The balance plate 56 is pulled away from the vertical plate 53. The balance plate 56 drives the insertion rod 55 to slide synchronously, causing the insertion rod 55 to disengage from the limiting groove 54 on the surface of the support frame 51, thus releasing the fixed constraint on the support frame 51. During this process, the second spring 57 on the surface of the insertion rod 55 is stretched and stores elastic potential energy. Then, the support frame 51 is rotated to an inclination angle that matches the operator's height. Subsequently, the balance plate 56 is released, and the second spring 57 releases its elastic potential energy, pulling the balance plate 56 back towards the vertical plate 53. Simultaneously, the insertion rod 55 is driven into the limiting groove 54 corresponding to the current angle, completing the fixation of the support frame 51. At this time, the operator can observe the inlet status of the thresher body 2 in advance through the acrylic transparent plate 52 inside the support frame 51 to prepare for subsequent feeding. Then, the rice to be threshed is evenly poured into the fixed support frame 51. The rice slides naturally down the inclined surface of the support frame 51 and accurately enters the feed port of the thresher body 2, avoiding leakage or equipment blockage caused by manual feeding deviation. The thresher body 2 is started, and its internal core components separate the rice grains from the rice stalks through mechanical impact and kneading. Under the influence of gravity, the separated mixture is conveyed outward from the output frame 3 inside the threshing machine body 2. When the threshed mixture flows out from the output frame 3, the grains, due to their small size and light weight, can pass through the mesh of the filter screen 406 and be collected; while the rice straw, due to its large volume and long length, is intercepted on the surface by the filter screen 406, thus separating the grains from the rice straw. When a large amount of rice straw accumulates on the surface of the filter screen 406, affecting the filtration efficiency, the servo motor 405 is started. The shaft of the servo motor 405 drives the filter screen 406 to rotate around the output frame 3 until the filter screen 406 changes from an inclined state to a horizontal state, facilitating the removal of rice straw. Then, the fan 402 on the support plate 401 is rotated. After the fan 402 is started, the airflow can blow the rice straw on the surface of the horizontal filter screen 406 to the designated collection area. If there is a small amount of sticky rice straw, it can be manually cleaned. After cleaning, the servo motor 405 is started again to reset the filter screen 406 to the inclined state, and the limit frame 407 is locked again, so that the filtration operation can continue.

[0033] Compared to the prior art and common existing technologies that rely solely on a single screening structure, resulting in a large amount of rice straw remaining after threshing and requiring additional manpower and time for secondary separation, this application achieves efficient and automated separation of rice straw and grains by specifically setting a filter structure 4 on the surface of the output frame 3. This filter structure 4 uses a servo motor 405 as its core drive, with its shaft directly fixed to the filter screen 406, allowing for flexible control of the filter screen 406's angle switching. Combined with a sliding limit frame 407 that slides through the output frame 3, and through the sliding fit between the square plate 408 and the limit frame 407, and the compression and fixation of both by the compression rod 411, the tilting filtration angle of the filter screen 406 can be stabilized during threshing. This ensures that when the mixture flows through the output frame 3 after threshing, the grains can smoothly pass through the mesh of the filter screen 406 for collection, while the rice straw, due to its size and length, is separated. The angle is firmly blocked on the surface of the filter screen 406. At the same time, the filter structure 4 is also designed with multiple auxiliary optimization components: between the two support plates 401 fixed on the surface of the threshing machine body 2, the fan 402 is rotatably connected by the support rod 403, and the elastic sleeve 404 sleeved on the arc surface of the support rod 403 can fix the angle of the fan 402. When there is a lot of rice straw accumulated on the surface of the filter screen 406, the fan 402 can be started to quickly blow the rice straw on the horizontal filter screen 406 to the designated area, avoiding the tedious manual cleaning; the two first springs 410 fixed on the surface of the limit frame 407 can automatically drive the limit frame 407 to reset towards the filter screen 406 after the squeezing rod 411 is unlocked, simplifying the operation process; the round plate 409 at the end of the square plate 408 can prevent the limit frame 407 from sliding off the square plate 408, ensuring the stability of the structure. Through this series of designs, the filter structure 4 of this application can thoroughly filter the rice straw remaining in the rice after threshing, ensuring the purity of the rice grains from the source, eliminating the need for secondary separation, significantly improving the quality of the rice, and providing convenience for subsequent processing.

[0034] Compared to the prior art and common existing technologies, where the height of the thresher inlet support frame 51 is fixed and cannot be adapted to operators of different heights, resulting in shorter operators having to tiptoe to feed materials and taller operators having to bend over to feed materials, this application achieves flexible adjustment of the height of the support frame 51 by setting a support structure 5 on the surface of the thresher body 2. The support structure 5 is based on two vertical plates 53 fixed to the threshing machine body 2. A support frame 51 is rotatably connected between the vertical plates 53. Several limiting grooves 54 are evenly opened on the surface of the support frame 51, which can accurately match the insert rods 55 that slide inside the vertical plates 53. A balance plate 56 fixed to the surface of the insert rod 55, together with a second spring 57 sleeved on its arc surface, forms an elastic locking mechanism. During adjustment, simply pull the balance plate 56 away from the vertical plate 53 to drive the insert rod 55 out of the limiting groove 54 and release the fixation to the support frame 51. After the support frame 51 is rotated to an inclination angle that matches the height of the operator, the balance plate 56 is released, and the second spring 57 will pull the balance plate 56 back to its original position, so that the insert rod 55 is locked into the corresponding limiting groove 54, thus completing the stabilization of the support frame 51. Furthermore, the acrylic transparent plate 52 fixed inside the support frame 51 allows operators to easily observe the threshing status in real time and adjust the feeding speed and quantity when the support frame 51 blocks the threshing machine inlet. The evenly distributed limiting grooves 54 facilitate operators to quickly judge and adjust the angle of the support frame 51, improving adjustment efficiency. Through the design of the support structure 5, this application can fully adapt to the working needs of operators of different heights, effectively avoiding problems such as excessive bending and strenuous tiptoeing, and significantly reducing operator fatigue. At the same time, the height-adapted angle of the support frame 51 can guide the rice to slide accurately into the threshing machine inlet along the inclined surface, reducing the risk of material leakage and equipment blockage, significantly improving the accuracy and efficiency of rice pouring, and ensuring that the entire threshing operation is continuous, smooth, and efficient.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] 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 threshing and separating platform, comprising a platform body (1), characterized in that: The threshing machine body (2) is fixedly installed on the surface of the platform body (1). The output frame (3) is fixedly installed inside the threshing machine body (2). The output frame (3) is provided with a filter structure (4) on its surface. The filter structure (4) includes a servo motor (405). The surface of the servo motor (405) is fixedly connected to the output frame (3). The shaft of the servo motor (405) is fixedly installed with a filter screen (406). The filter screen (406) is slidably connected to a limit frame (407). The limit frame (407) slides through the output frame (3). The surface of the limit frame (407) is provided with a square hole (412). The inner wall of the square hole (412) is slidably connected with a square plate (408). The surface of the square plate (408) is fixedly connected to the output frame (3). The limit frame (407) is threadedly connected with a pressing rod (411). The surface of the pressing rod (411) abuts against the square plate (408).

2. The rice threshing and separating platform according to claim 1, characterized in that: Two support plates (401) are fixedly installed on the surface of the threshing machine body (2). Support rods (403) are rotatably inserted inside the support plates (401). Fans (402) are rotatably connected to the surfaces of the two support rods (403). A retainer (404) is fitted on the arc surface of the support rod (403). The retainer (404) is an elastic sleeve and is located between the support plate (401) and the fan (402).

3. The rice threshing and separating platform according to claim 1, characterized in that: Two first springs (410) are fixedly installed on the surface of the limiting frame (407), and the end of the first spring (410) away from the limiting frame (407) is fixedly connected to the output frame (3).

4. The rice threshing and separating platform according to claim 1, characterized in that: A circular plate (409) is fixedly installed at the end of the square plate (408) away from the output frame (3), and the size of the circular plate (409) is larger than the size of the square hole (412).

5. The rice threshing and separating platform according to claim 1, characterized in that: The surface of the threshing machine body (2) is provided with a support structure (5), the support structure (5) includes two upright plates (53), the surfaces of the two upright plates (53) are fixedly connected to the threshing machine body (2), the surfaces of the two upright plates (53) are rotatably connected with a bearing frame (51), the surface of the bearing frame (51) is provided with several limiting grooves (54), the inside of the upright plate (53) is slidably inserted with a rod (55), the surface of the rod (55) is fixedly installed with a balance plate (56), the arc surface of the rod (55) is fitted with a second spring (57), the two ends of the second spring (57) are fixedly connected to the upright plate (53) and the balance plate (56) respectively, and the size of the rod (55) is adapted to the size of the limiting groove (54).

6. The rice threshing and separating platform according to claim 5, characterized in that: Several of the limiting grooves (54) are evenly distributed on the surface of the support frame (51).

7. The rice threshing and separating platform according to claim 5, characterized in that: An acrylic transparent plate (52) is fixedly installed inside the support frame (51).

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