Impurity removing mechanism for grain combine harvester

Abstract

The impurity removing mechanism comprises a machine frame, a first fixing rod and a second fixing rod are arranged in the machine frame, a first rotating wheel is installed on the first fixing rod, an impurity collecting box is arranged on the right side of a vertical plate, and a through opening is formed in the position, close to the right side of the top of the fixing plate, of the bottom of the vertical plate. Through holes distributed at equal intervals are formed in the left side of the conveying belt, a scraping plate with a brush at the bottom is arranged in the through hole, and a miscellaneous grain collecting box is arranged on the right side of the conveying belt, so that grains fall down through the through holes distributed at equal intervals and are conveyed into the miscellaneous grain collecting box through the conveying belt to be collected; the pneumatic telescopic rod drives the scraping plate with the brush at the bottom to turn over some rice husks, straw and the like left on the fixing plate back and forth, impurities and rice husks cannot be left, through holes cannot be blocked, the impurities and the rice husks are collected through the impurity collecting box, the impurities and the rice husks of grains are well treated, and the practicability is high. And the safety degree is high, and the risk of being stirred is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grain harvesters for agricultural machinery, and specifically relates to an impurity removing mechanism for a combine harvester. Background Technique

[0002] A combine harvester is an agricultural machine used to efficiently collect and process cereal crops such as wheat, corn, and rice during the harvesting season. It can complete the picking and preliminary processing of crops on one machine, greatly improving the harvesting efficiency and labor productivity. Harvesting requires multiple steps, and impurity removal is one of the key steps. After the grains are separated from the straw, further cleaning is required to remove impurities in the grains, such as chaff, dust, and doped straw. Traditional methods mainly achieve impurity removal by using sieves and fans. The sieve is used to screen the grains, while the fan is used to blow away dust and impurities. However, when the fan blows away dust, impurities, and chaff, the fan may get stuck. Usually, to avoid getting stuck, the wind force of the fan is increased. In this way, the fan will also carry away the grains when blowing away dust, impurities, and chaff, resulting in waste. Therefore, transformation is needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide an impurity removing mechanism for a combine harvester to solve the problem raised in the above background technique that when the fan blows away dust, impurities, and chaff, the fan has a risk of getting stuck. Usually, to avoid getting stuck, the wind force of the fan is increased. In this way, the fan will also carry away the grains when blowing away dust, impurities, and chaff, resulting in waste. Therefore, transformation is needed.

[0004] To achieve the above object, the present utility model provides the following technical solutions: A cleaning mechanism for a combine harvester, including a frame. Inside the frame, there are a first fixed rod and a second fixed rod. A first runner is installed on the first fixed rod, and a second runner is installed on the second fixed rod. The first runner and the second runner are respectively connected to both sides of a conveyor belt. A servo motor is installed at the front end of the first fixed rod. Baffles are installed on the front and rear sides and the front and back of the first fixed rod and the second fixed rod. On the side where the two baffles are close to each other, fastening bolts are detachably connected at equal intervals. A plurality of the fastening bolts are respectively detachably connected to corresponding fixed strips at equal intervals. The two fixed strips are respectively fixedly connected to the front and rear sides of a fixing plate. Through holes are distributed at equal intervals on the fixing plate. A resisting plate is installed on the left side of the fixing plate near a support rod. A grain cutting fork shovel is arranged on the left side of the fixing plate. A vertical plate is installed on the right side of the fixing plate. An impurity collection box is arranged on the right side of the vertical plate. At the bottom of the vertical plate, close to the top right side of the fixing plate, there is a through opening. A scraping plate with a brush at the bottom is arranged in the through opening. The right side of the scraping plate with a brush at the bottom is engaged with the output end of a pneumatic telescopic rod. The rod body of the pneumatic telescopic rod penetrates through the right side of the impurity collection box. A second connecting frame is installed at the bottom of the rod body of the pneumatic telescopic rod. The fixing plate is arranged above the conveyor belt. An impurity-free grain collection box is arranged on the right side of the conveyor belt.

[0005] Preferably, connecting clips two are installed at the front and rear ends on the left side of the impurity-free grain collection box. The two connecting clips two are respectively engaged with the front and rear ends on the right side of the second fixed rod. On the left sides of the two connecting clips two, corresponding connecting clips one are respectively arranged. The two connecting clips one are respectively engaged with the front and rear ends on the left side of the second fixed rod. A plurality of connecting bolts are respectively detachably connected between the two connecting clips two and the corresponding connecting clips one.

[0006] Preferably, the scraping plate with a brush at the bottom is slidably connected to the tops of the fixing plate and the impurity collection box.

[0007] Preferably, a support rod is installed on the grain cutting fork shovel. A semi-gear is installed at the front end of the support rod. The semi-gear is meshed with a full-gear. The full-gear is fixedly connected to the output end of a DC servo motor. The front and rear sides of the support rod are respectively rotatably connected to support frames. The two support frames are respectively installed on the left side of the frame.

[0008] Preferably, opening plates are arranged at the bottom right side of the impurity collection box and the right side of the impurity-free grain collection box.

[0009] Preferably, two first connecting frames are installed on the impurity collection box.

[0010] Preferably, protective covers are sleeved outside the semi-gear, outside the full-gear, and outside the DC servo motor.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: After the grains fall through the equally spaced through holes, some impurities such as husks and straw will remain on the fixed plate. Then, the pneumatic telescopic rod drives the scraper with a brush at the bottom to enter the fixed plate from the through port, and turns over the husks and straw remaining on the fixed plate back and forth, so that the husks and straw are turned down and the grains mixed inside fall through the through holes again. Moreover, the through holes will also be brushed back and forth by the brush on the bottom of the scraper with a brush at the bottom, so that they will not be blocked. Then, the pneumatic telescopic rod also drives the scraper with a brush at the bottom to scrape the husks and straw off the fixed plate and scrape them into the impurity collection box through the through port for collection. After the impurity collection box collects the husks and straw, etc., the grain impurities inside the impurity collection box can be taken out from the bottom. An opening plate is provided at the bottom of the impurity collection box. The grains falling through the through holes will enter the impurity-free grain collection box through the conveyor belt. The conveyor belt is connected to the first runner and the second runner. The first runner is installed on the first fixed rod, and the first fixed rod is driven to rotate by a servo motor. The rotation of the first fixed rod drives the first runner to rotate, and the rotation of the first runner drives the second runner to rotate through the connected conveyor belt. In this way, the impurities of the grains are collected, and the grains after being processed and filtered are also collected. In this way, through the transformation, the impurities and husks of the grains can be well processed, and the processed impurities and husks are collected, and the grains are also collected. Compared with the impurities and husks blown away by the traditional fan, there is no risk of being entangled, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the left side view three-dimensional diagram of the present utility model.

[0013] Figure 2 is the top view display diagram of the present utility model.

[0014] Figure 3 is the internal structure display diagram of the present utility model.

[0015] Figure 4 is the structural disassembly display diagram of the present utility model.

[0016] Figure 5 is the front view three-dimensional diagram of the present utility model.

[0017] In the figure: 1, frame; 2, support frame; 3, support rod; 4, grain cutting fork shovel; 5, DC servo motor; 6, full gear; 7, half gear; 8, servo motor; 9, first fixed rod; 10, second fixed rod; 11, first runner; 12, second runner; 13, conveyor belt; 14, baffle; 15, fixed plate; 16, through hole; 17, fixed strip; 18, fastening bolt; 19, vertical plate; 20, through port; 21, scraper with brush at the bottom; 22, pneumatic telescopic rod; 23, impurity collection box; 24, first connecting frame; 25, second connecting frame; 26, first connecting clip; 27, second connecting clip; 28, connecting bolt; 29, impurity-free grain collection box; 30, protective cover; 31, opening plate; 32, abutting plate. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 5, the utility model provides a cleaning mechanism for a combine harvester, which includes a frame 1. Inside the frame 1, there are a first fixed rod 9 and a second fixed rod 10. A first runner 11 is installed on the first fixed rod 9, and a second runner 12 is installed on the second fixed rod 10. The first runner 11 and the second runner 12 are respectively connected to both sides of a conveyor belt 13. A servo motor 8 is installed at the front end of the first fixed rod 9. Baffles 14 are installed on the front and rear sides and the front and back of the first fixed rod 9 and the second fixed rod 10. On the side where the two baffles 14 are close to each other, fastening bolts 18 are detachably connected at equal intervals. A plurality of fastening bolts 18 are respectively detachably connected to corresponding fixing strips 17 at equal intervals. The two fixing strips 17 are respectively fixedly connected to the front and rear sides of a fixing plate 15. Through holes 16 are evenly distributed on the fixing plate 15. A resisting plate 32 is installed on the left side of the fixing plate 15 near a support rod 3. A grain cutting fork shovel 4 is arranged on the left side of the fixing plate 15. A vertical plate 19 is installed on the right side of the fixing plate 15. An impurity collection box 23 is arranged on the right side of the vertical plate 19. A through port 20 is arranged at the bottom of the vertical plate 19 close to the top right side of the fixing plate 15. A scraper 21 with a brush at the bottom is arranged in the through port 20. The right side of the scraper 21 with a brush at the bottom is engaged with the output end of a pneumatic telescopic rod 22. The rod body of the pneumatic telescopic rod 22 penetrates through the right side of the impurity collection box 23. A second connecting frame 25 is installed at the bottom of the rod body of the pneumatic telescopic rod 22. The fixing plate 15 is arranged above the conveyor belt 13. A non-impurity grain collection box 29 is arranged on the right side of the conveyor belt 13. Connecting clips two 27 are installed at the front and rear ends on the left side of the non-impurity grain collection box 29. The two connecting clips two 27 are respectively engaged with the front and rear ends on the right side of the second fixed rod 10. Connecting clips one 26 are respectively arranged on the left sides corresponding to the two connecting clips two 27. The two connecting clips one 26 are respectively engaged with the front and rear ends on the left side of the second fixed rod 10. A plurality of connecting bolts 28 are respectively detachably connected between the two connecting clips two 27 and the corresponding connecting clips one 26;

[0020] The through holes 16 on the fixed plate 15 allow the grains after threshing to fall. The size of the through holes 16 is mainly set according to the size of the grain. After the equally spaced through holes 16 allow the grains to fall, some impurities such as chaff and straw will remain on the fixed plate 15. Then, the pneumatic telescopic rod 22 drives the scraper 21 with a brush at the bottom to enter the fixed plate 15 from the through port 20, and turns over the chaff and straw remaining on the fixed plate 15 back and forth, so that the chaff and straw are turned down and the grains mixed in them fall again from the through holes 16. Moreover, the through holes 16 will also be brushed back and forth by the brush on the bottom of the scraper 21 with a brush at the bottom, so that they will not be blocked. Then, the pneumatic telescopic rod 22 also drives the scraper 21 with a brush at the bottom to scrape the chaff and straw away from the fixed plate 15, and the baffle 32 blocks the grain impurities on the fixed plate 15 on the left side so that they will not fall outside, and scrapes them into the impurity collection box 23 through the through port 20 for collection. After the impurity collection box 23 collects the chaff and straw, etc., the grain impurities inside the impurity collection box 23 can be taken out from the bottom. An opening plate 31 is provided at the bottom of the impurity collection box 23. The grains that fall from the through holes 16 will enter the impurity-free grain collection box 29 through the conveyor belt 13. The conveyor belt 13 is connected to the first runner 11 and the second runner 12. The first runner 11 is installed on the first fixed rod 9. The first fixed rod 9 is driven to rotate by the servo motor 8. The rotation of the first fixed rod 9 drives the first runner 11 to rotate. The rotation of the first runner 11 drives the second runner 12 to rotate through the connected conveyor belt 13. In this way, the grain impurities are collected, and the grains after being processed and filtered are also collected. In this way, through the transformation, the grain impurities and chaff can be well processed, and the processed impurities and chaff are collected, and the grains are also collected. Compared with the impurities and chaff blown away by the traditional fan, there is no risk of being caught, and the safety factor is high.

[0021] The scraper 21 with a brush at the bottom is slidably connected to the tops of the fixed plate 15 and the impurity collection box 23. The scraper 21 with a brush at the bottom is provided at the through port 20. The pneumatic telescopic rod 22 drives the scraper 21 with a brush at the bottom to come out of the through port 20 onto the fixed plate 15 and into the impurity collection box 23.

[0022] A support rod 3 is installed on the grain cutting fork shovel blade 4. A semi-gear 7 is installed at the front end of the support rod 3. The semi-gear 7 is meshed and connected with a full gear 6. The full gear 6 is fixedly connected to the output end of a DC servo motor 5. Support frames 2 are rotatably connected to both the front and rear sides of the support rod 3. The two support frames 2 are respectively installed on the left side of the frame 1. The DC servo motor 5 drives the full gear 6 to rotate. The full gear 6 drives the meshed semi-gear 7 to make a half turn. In this way, the grain cutting fork shovel blade 4 will not make a 360-degree flip on the support frame 2, but only make a half turn. The grain cutting fork shovel blade 4 flips from the bottom to a point on the upper right side and will not flip downwards anymore. It just flips onto the fixed plate 15, forks and shovels the grain with the grain cutting fork shovel blade 4, and rotates and flips into the frame 1 for grain separation processing.

[0023] Open plates 31 are provided on the bottom right side of the impurity collection box 23 and on the right side of the impurity-free grain collection box 29. The open plates 31 are the doors on the impurity collection box 23 and the impurity-free grain collection box 29, which are convenient for taking out the grains with impurities removed, as well as removing the impurities and rice husks of the grains. Two connecting frames one 24 are installed on the impurity collection box 23. The two connecting frames one 24 mainly support and fix the impurity collection box 23. Protective covers 30 are sleeved outside the semi-gear 7, outside the full gear 6, and outside the DC servo motor 5. The protective covers 30 protect the semi-gear 7, the full gear 6, and the DC servo motor 5.

[0024] In the present utility model, the through holes 16 on the fixing plate 15 allow the grains after threshing to fall. The size of the through holes 16 is mainly set according to the size of the grains. After the equally spaced through holes 16 allow the grains to fall, some impurities such as chaff and straw will remain on the fixing plate 15. Then, the pneumatic telescopic rod 22 drives the scraper 21 with a brush at the bottom to enter the fixing plate 15 from the through port 20, and turns over the chaff and straw remaining on the fixing plate 15 back and forth, so that the chaff and straw are turned down and the grains mixed inside fall again from the through holes 16. Moreover, the through holes 16 will also be brushed back and forth by the brush on the bottom of the scraper 21 with a brush at the bottom, so that they will not be blocked. Then, the pneumatic telescopic rod 22 also drives the scraper 21 with a brush at the bottom to scrape the chaff and straw off the fixing plate 15, and the baffle 32 blocks the left side of the grain impurities on the fixing plate 15 so that they will not fall to the outside, and scrapes them into the impurity collection box 23 through the through port 20 for collection. After the impurity collection box 23 collects the chaff and straw, etc., the grain impurities inside the impurity collection box 23 can be taken out from the bottom. An opening plate 31 is provided at the bottom of the impurity collection box 23. The grains falling from the through holes 16 will enter the impurity-free grain collection box 29 through the conveyor belt 13. The conveyor belt 13 is connected to the first runner 11 and the second runner 12. The first runner 11 is installed on the first fixed rod 9. The first fixed rod 9 is driven to rotate by the servo motor 8. The rotation of the first fixed rod 9 drives the first runner 11 to rotate. The rotation of the first runner 11 drives the second runner 12 to rotate through the connected conveyor belt 13. In this way, the grain impurities are collected, and the processed and filtered grains are also collected. In this way, through the transformation, the grain impurities and chaff can be well processed, and the processed impurities and chaff are collected, and the grains are also collected. Compared with the impurities and chaff blown away by the traditional fan, there is no risk of being entangled, and the safety factor is high.

[0025] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A cleaning mechanism for a combine harvester, comprising a frame (1), characterized in that: Inside the frame (1), a first fixed rod (9) and a second fixed rod (10) are provided. A first runner (11) is installed on the first fixed rod (9), and a second runner (12) is installed on the second fixed rod (10). The first runner (11) and the second runner (12) are respectively connected to both sides of the conveyor belt (13). A servo motor (8) is installed at the front end of the first fixed rod (9). Baffles (14) are erected on the front and rear sides of the first fixed rod (9) and the second fixed rod (10). On the side where the two baffles (14) are close to each other, fastening bolts (18) are detachably connected at equal intervals. A plurality of the fastening bolts (18) are respectively detachably connected to the corresponding fixed bars (17) at equal intervals. The two fixed bars (17) are respectively fixedly connected to the front and rear sides of the fixed plate (15). Through holes (16) are evenly distributed on the fixed plate (15). A resisting plate (32) is installed on the left side of the fixed plate (15) near the support rod (3). A grain cutting fork shovel (4) is arranged on the left side of the fixed plate (15). A vertical plate (19) is installed on the right side of the fixed plate (15). An impurity collection box (23) is arranged on the right side of the vertical plate (19). A through port (20) is arranged at the bottom of the vertical plate (19) close to the top right side of the fixed plate (15). A scraper (21) with a brush at the bottom is arranged in the through port (20). The right side of the scraper (21) with a brush at the bottom is engaged with the output end of the pneumatic telescopic rod (22). The rod body of the pneumatic telescopic rod (22) penetrates through the right side of the impurity collection box (23). A second connecting frame (25) is installed at the bottom of the rod body of the pneumatic telescopic rod (22). The fixed plate (15) is arranged above the conveyor belt (13). A non-impurity grain collection box (29) is arranged on the right side of the conveyor belt (13).

2. The impurity removal mechanism for a combine harvester according to claim 1, characterized in that: On the front and rear ends of the left side of the non-impurity grain collection box (29), second connecting clamps (27) are installed. The two second connecting clamps (27) are respectively clamped on the front and rear ends of the right side of the second fixed rod (10). On the left sides of the two second connecting clamps (27), first connecting clamps (26) are respectively arranged. The two first connecting clamps (26) are respectively clamped on the front and rear ends of the left side of the second fixed rod (10). The two second connecting clamps (27) are respectively detachably connected to the corresponding first connecting clamps (26) by a plurality of connecting bolts (28).

3. The impurity removal mechanism for a combine harvester according to claim 1, characterized in that: The scraper (21) with a brush at the bottom is slidably connected to the tops of the fixed plate (15) and the impurity collection box (23).

4. A cleaning mechanism for a combine harvester according to claim 1, characterized in that: A support rod (3) is installed on the grain cutting fork shovel (4). A semi-gear (7) is installed at the front end of the support rod (3). The semi-gear (7) is meshed and connected with a full gear (6). The full gear (6) is fixedly connected to the output end of the DC servo motor (5). The front and rear sides of the support rod (3) are respectively rotatably connected to support frames (2). The two support frames (2) are respectively installed on the left side of the frame (1).

5. A cleaning mechanism for a combine harvester according to claim 1, characterized in that: Open plates (31) are arranged on the bottom right side of the impurity collection box (23) and the right side of the non-impurity grain collection box (29).

6. The cleaning mechanism for a combine harvester according to claim 1, characterized in that: Two first connecting brackets (24) are installed on the impurity collection box (23).

7. A cleaning mechanism for a combine harvester according to claim 4, characterized in that: A protective cover (30) is sleeved outside the external gear (7), outside the full gear (6) and outside the DC servo motor (5).

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