A grass separating device for a rice harvester

Abstract

The utility model discloses a rice harvester weed separating device, concretely relates to rice harvester technical field, include: the machine case, the top of machine case and bottom all are equipped with the opening, and the inside bottom of machine case is provided with the filter plate of inclined distribution, one side of machine case is equipped with the grass outlet of filter plate, and the bottom of filter plate extends to the inside of grass outlet, the inside top of machine case is connected with two first connecting shafts through bearing symmetry, the utility model discloses by setting multiple groups first threshing roller, second threshing roller and third threshing roller from top to bottom, and the interval between it gradually reduces from big to small, and the rice of cutting is sent into the machine case by rice harvester conveying device, and under the action of transmission mechanism, can make multiple groups first threshing roller, second threshing roller and third threshing roller synchronous rotation to the inside and carry out multistage threshing treatment to the rice falling between it, and further, the separation effect of straw and rice kernel has been improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of rice harvester technology, specifically to a weed separation device for a rice harvester. Background Technology

[0002] A rice harvester is an integrated machine for harvesting crops. It completes harvesting and threshing in one go, collects the grains into a storage bin, and then transports the grains to a transport vehicle via a conveyor belt. Manual harvesting is also possible, where rice, wheat, and other crop stalks are laid out in the field and then picked up and threshed by grain harvesting machinery. It is a crop harvesting machine that harvests both the grains and stalks of rice, wheat, and other cereal crops.

[0003] Currently, existing weed separation devices for rice harvesters mainly use two toothed rollers to separate the harvested rice grains from the straw. However, the actual separation effect is generally poor, making it difficult to achieve multi-stage threshing of the rice grains. This often results in a large number of rice grains remaining attached to the straw, leading to ineffective separation. Utility Model Content

[0004] The purpose of this invention is to provide a weed separation device for a rice harvester. This device consists of multiple sets of first, second, and third threshing rollers arranged from top to bottom, with the spacing between them gradually decreasing. After the cut rice grains are fed into the machine housing by the rice harvester's conveying device, the multiple sets of first, second, and third threshing rollers rotate synchronously inward under the action of the transmission mechanism, performing multi-stage threshing on the rice grains that fall between them. This significantly improves the separation effect of straw and rice grains, thus solving the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a weed separation device for a rice harvester, comprising:

[0006] The casing has openings at both the top and bottom, and the bottom of the casing has inclined filter plates. One side of the casing has a grass outlet facing the filter plates, and the bottom of the filter plates extends into the grass outlet.

[0007] The top of the inner chamber of the machine is symmetrically connected by bearings to two first connecting shafts, each of which is equipped with a first threshing roller. The middle of the inner chamber of the machine is symmetrically connected by bearings to two second connecting shafts, each of which is equipped with a second threshing roller. The bottom of the inner chamber of the machine is equipped with a third connecting shaft, each of which is equipped with a third threshing roller. The third threshing roller is located above the filter plate. A transmission mechanism is provided between the first connecting shafts, the second connecting shafts, and the third connecting shafts.

[0008] Preferably, the transmission mechanism includes first synchronous pulleys symmetrically arranged at one end of the two first connecting shafts extending to the outside of the chassis, second synchronous pulleys symmetrically arranged at one end of the two second connecting shafts extending to the outside of the chassis, and third synchronous pulleys symmetrically arranged at one end of the two third connecting shafts extending to the outside of the chassis, and a synchronous belt is provided between the second synchronous pulleys and the upper first synchronous pulley and the lower third synchronous pulley.

[0009] Preferably, the transmission mechanism further includes a drive motor located on the outside of the chassis relative to one end of the synchronous belt, and gears are fixed at one end of each of the two third connecting shafts relative to one end of the third synchronous pulley. The two gears mesh with each other, and the output end of the drive motor is connected to one of the gears.

[0010] Preferably, the distance between the two first threshing rollers is greater than the distance between the two second threshing rollers, and the distance between the two second threshing rollers is greater than the distance between the two third threshing rollers.

[0011] Preferably, multiple sets of connecting columns are symmetrically arranged on both sides of the inner side of the casing. The side walls of the connecting columns are provided with clamping plates, and multiple clamping plates are interspersed between the first threshing roller, the second threshing roller and the third threshing roller. Multiple cylinders are symmetrically arranged on both sides of the casing, and the output end of the cylinder extends into the casing and is fixedly connected to the connecting columns.

[0012] Preferably, multiple sliding grooves are symmetrically arranged at both ends of the inner side of the chassis, and the end of the connecting column is slidably fitted in the sliding groove.

[0013] Preferably, a vibration motor is provided on the bottom side of the filter plate.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] By setting multiple sets of first, second, and third threshing rollers from top to bottom, with the spacing between them gradually decreasing from large to small, the cut rice grains are fed into the machine box by the rice harvester's conveying device. Under the action of the transmission mechanism, the multiple sets of first, second, and third threshing rollers can rotate inward synchronously and perform multi-stage threshing on the rice grains falling between them, thereby greatly improving the separation effect of straw and rice grains.

[0016] By alternating connecting columns and clamping plates between the first, second, and third threshing rollers, and driven by a cylinder, the adjacent clamping plates can clamp the rice grains falling between them, thereby further threshing the rice and greatly improving the weed separation effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a longitudinal sectional view of the chassis of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the chassis of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the cylinder and the clamping plate of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Casing; 2. Opening; 3. Straw outlet; 4. Filter plate; 5. First threshing roller; 6. Second threshing roller; 7. Third threshing roller; 8. First synchronous pulley; 9. Second synchronous pulley; 10. Third synchronous pulley; 11. Synchronous belt; 12. Drive motor; 13. Gear; 14. Cylinder; 15. Connecting column; 16. Clamping plate; 17. Slide groove; 18. First connecting shaft; 19. Second connecting shaft; 20. Third connecting shaft. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1-5 The weed separation device for a rice harvester shown includes:

[0027] The machine casing 1 has openings 2 at both the top and bottom, and the bottom of the machine casing 1 is provided with inclined filter plates 4. One side of the machine casing 1 is provided with a grass outlet 3 facing the filter plates 4, and the bottom of the filter plates 4 extends into the grass outlet 3.

[0028] A vibration motor is installed on the bottom side of filter plate 4.

[0029] Two first connecting shafts 18 are symmetrically connected to the top of the inner casing 1 via bearings. Each of the two first connecting shafts 18 is equipped with a first threshing roller 5. Two second connecting shafts 19 are symmetrically connected to the middle of the inner casing 1 via bearings. Each of the two second connecting shafts 19 is equipped with a second threshing roller 6. A third connecting shaft 20 is provided at the bottom of the inner casing 1. Each of the two third connecting shafts 20 is equipped with a third threshing roller 7. The third threshing roller 7 is located above the filter plate 4. A transmission mechanism is provided between the first connecting shafts 18, the second connecting shafts 19 and the third connecting shafts 20.

[0030] The distance between the two first threshing rollers 5 is greater than the distance between the two second threshing rollers 6, and the distance between the two second threshing rollers 6 is greater than the distance between the two third threshing rollers 7.

[0031] The transmission mechanism includes first synchronous pulleys 8 symmetrically arranged on one end of two first connecting shafts 18 extending to the outside of the housing 1, second synchronous pulleys 9 symmetrically arranged on one end of two second connecting shafts 19 extending to the outside of the housing 1, and third synchronous pulleys 10 symmetrically arranged on one end of two third connecting shafts 20 extending to the outside of the housing 1. A synchronous belt 11 is provided between each of the second synchronous pulleys 9 and the upper first synchronous pulley 8 and the lower third synchronous pulley 10.

[0032] The transmission mechanism also includes a drive motor 12 located on the outside of the housing 1 at one end relative to the synchronous belt 11. Two third connecting shafts 20 are each fixed with a gear 13 at one end relative to the third synchronous pulley 10. The two gears 13 mesh with each other, and the output end of the drive motor 12 is connected to one of the gears 13.

[0033] In use, the cut rice grains can be fed into the machine box 1 by the rice harvester's conveying device. By starting the drive motor 12, the drive motor 12 can drive two gears 13 to mesh inward, causing the gears 13 to drive two third connecting shafts 20 to rotate inward simultaneously. Then, under the synchronous movement of the third synchronous pulley 10, the second synchronous pulley 9, the first synchronous pulley 8 and the synchronous belt 11, the two second connecting shafts 19 and the two first connecting shafts 18 can rotate inward simultaneously. This allows multiple sets of first threshing rollers 5, second threshing rollers 6 and third threshing rollers 7 to rotate inward synchronously and thresh the rice grains that fall between them. As the distance between the first threshing rollers 5, second threshing rollers 6 and third threshing rollers 7 gradually decreases, the rice grains can be threshed in multiple stages, thereby greatly improving the separation effect of straw and rice grains.

[0034] After threshing, the rice grains can fall through the filter plate 4, while the straw and weeds can be intercepted on the filter plate 4. With the vibration of the vibrating motor, the rice grains can be shaken off more effectively, while the straw and weeds slide out through the straw outlet 3.

[0035] Multiple sets of connecting columns 15 are symmetrically arranged on both sides of the inside of the casing 1. Clamping plates 16 are provided on the side walls of the connecting columns 15, and multiple clamping plates 16 are interspersed between the first threshing roller 5, the second threshing roller 6 and the third threshing roller 7. Multiple cylinders 14 are symmetrically arranged on both sides of the casing 1. The output end of the cylinder 14 extends into the casing 1 and is fixedly connected to the connecting columns 15.

[0036] Multiple sliding grooves 17 are symmetrically arranged on both ends of the inner side of the chassis 1, and the ends of the connecting posts 15 are slidably fitted in the sliding grooves 17.

[0037] The cylinder 14 drives the connecting column 15 to slide along the slide groove 17, which in turn drives the clamping plate 16 to move. The two adjacent clamping plates 16 can clamp the rice grains that fall between them. Since multiple sets of clamping plates 16 are interspersed between the first threshing roller 5, the second threshing roller 6 and the third threshing roller 7, the rice grains can be further threshed, which greatly improves the weed separation effect.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A weed separation device for a rice harvester, characterized in that, include: The machine box (1) has openings (2) at both the top and bottom, and the bottom of the machine box (1) is provided with inclined filter plates (4). The machine box (1) has a grass outlet (3) facing the filter plate (4) on one side, and the bottom of the filter plate (4) extends into the grass outlet (3). The top of the inner casing (1) is symmetrically connected by bearings to two first connecting shafts (18), each of which is equipped with a first threshing roller (5). The middle of the inner casing (1) is symmetrically connected by bearings to two second connecting shafts (19), each of which is equipped with a second threshing roller (6). The bottom of the inner casing (1) is equipped with a third connecting shaft (20), each of which is equipped with a third threshing roller (7). The third threshing roller (7) is located above the filter plate (4). A transmission mechanism is provided between the first connecting shafts (18), the second connecting shafts (19), and the third connecting shafts (20).

2. The weed separation device for a rice harvester according to claim 1, characterized in that: The transmission mechanism includes first synchronous pulleys (8) symmetrically arranged on the two first connecting shafts (18) extending to one end of the casing (1), second synchronous pulleys (9) symmetrically arranged on the two second connecting shafts (19) extending to one end of the casing (1), and third synchronous pulleys (10) symmetrically arranged on the two third connecting shafts (20) extending to one end of the casing (1). A synchronous belt (11) is provided between the second synchronous pulley (9) and the upper first synchronous pulley (8) and the lower third synchronous pulley (10).

3. The weed separation device for a rice harvester according to claim 2, characterized in that: The transmission mechanism also includes a drive motor (12) located on the outside of the housing (1) at one end relative to the synchronous belt (11). Two third connecting shafts (20) are each fixed with a gear (13) at one end relative to the third synchronous pulley (10). The two gears (13) mesh with each other, and the output end of the drive motor (12) is connected to one of the gears (13).

4. The weed separation device for a rice harvester according to claim 1, characterized in that: The distance between the two first threshing rollers (5) is greater than the distance between the two second threshing rollers (6), and the distance between the two second threshing rollers (6) is greater than the distance between the two third threshing rollers (7).

5. The weed separation device for a rice harvester according to claim 1, characterized in that: Multiple sets of connecting columns (15) are symmetrically arranged on both sides of the inner side of the casing (1). The side wall of the connecting column (15) is provided with clamping plates (16), and multiple clamping plates (16) are interspersed between the first threshing roller (5), the second threshing roller (6) and the third threshing roller (7). Multiple cylinders (14) are symmetrically arranged on both sides of the casing (1). The output end of the cylinder (14) extends into the casing (1) and is fixedly connected to the connecting column (15).

6. The weed separation device for a rice harvester according to claim 5, characterized in that: Multiple sliding grooves (17) are symmetrically arranged at both ends of the inner side of the chassis (1), and the end of the connecting column (15) is slidably fitted in the sliding groove (17).

7. The weed separation device for a rice harvester according to claim 1, characterized in that: A vibration motor is provided on the bottom side of the filter plate (4).

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