Rear-mounted corn returning machine

Abstract

The invention belongs to the technical field of corn harvesting, and particularly relates to a rear-mounted corn returning machine which comprises a vehicle body. A feeding mechanism, a conveying mechanism and a peeling and threshing mechanism are arranged on the vehicle body; the peeling and threshing mechanism comprises a frame body and a fish scale threshing roller; a group of fish scale threshing rollers are rotationally connected in the frame body; a group of guide rollers are rotationally connected into the frame body, the guide rollers are located above the fish scale threshing rollers, and the guide rollers are perpendicular to the fish scale threshing rollers; the device is characterized in that the bottom end of the frame body is fixedly connected with a bearing cover, and one side of the bearing cover is in an opening state; arc-shaped filter screens are fixedly connected to the two sides of the bottom end of the bearing cover, a fixing block is fixedly connected to the middle of the bottom end of the bearing cover, the arc-shaped filter screens are symmetrically arranged relative to the fixing block, and the arc-shaped filter screens and the fixing block are fixedly connected; the side wall, away from the opening, of the bearing cover is rotationally connected with a pair of first rotating shafts symmetrically distributed relative to the fixing block. The problems of peeling and threshing during corn milk-ripe stage harvesting are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of corn harvesting, in particular to a rear-mounted corn returning machine. Background Art

[0002] The corn returner is an agricultural machine that uses machinery to complete multiple operations at one time, including picking the corn ears, stacking the corn, and returning the corn stalks to the field when the corn is ripe.

[0003] In the prior art, when harvesting corn and returning the stalks and corn husks to the field, large-scale mechanical harvesting is generally used. However, the existing device has the following problems: when peeling and threshing the corn, the husk pieces and corn kernels need to be filtered, and then the corn kernels are collected and the husk pieces are returned to the field for processing. However, the separation of corn kernels and husk pieces is generally performed by a screw blade and a filter. However, sometimes farmers sow winter wheat in advance or due to weather reasons, in the milky stage of corn (late milky stage, corn kernels meet the requirements of automatic harvesting) The corn kernels are harvested when the hardness of the corn kernels reaches a certain value. However, when the bracts are peeled, they are not completely dry but green or slightly yellow, and have more moisture. When the bracts are peeled and filtered through the filter, the bracts are easy to adhere to the auger blades. Long-term adhesion and accumulation affect the rotation of the auger blades to separate the bracts and corn kernels. In addition, excessive overall moisture will also lead to inconvenience in filtering, which is prone to blockage, affecting the overall harvesting efficiency. It is also easy for some corn kernels to fall off the filter and fall onto the soil, causing losses.

[0004] To this end, the present invention provides a rear-mounted corn returning machine. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the problem of peeling and threshing when harvesting corn at the milky stage is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the rear-mounted corn return machine described in the present invention includes a vehicle body; a feeding mechanism, a conveying mechanism and a peeling and threshing mechanism are provided on the vehicle body; the peeling and threshing mechanism includes a frame body and fish-scale threshing rollers; a group of fish-scale threshing rollers are rotatably connected in the frame body; a group of guide rollers are rotatably connected in the frame body, and the guide rollers are located above the fish-scale threshing rollers, and the guide rollers and the fish-scale threshing rollers are perpendicular to each other; a receiving cover is fixedly connected to the bottom end of the frame body, and one side of the receiving cover is in an open state; arc-shaped rollers are fixedly connected to both sides of the bottom end of the receiving cover. The filter screen is provided with a fixed block fixedly connected to the middle of the bottom end of the receiving cover, a pair of arc-shaped filter screens are symmetrically arranged about the fixed block, and the arc-shaped filter screens and the fixed block are fixedly connected; a pair of first rotating shafts symmetrically distributed about the fixed block are rotatably connected on the side wall of the receiving cover away from the opening, and the center of the first rotating shaft and the center of the arc-shaped filter screen coincide with each other; a first auger piece is fixedly connected to the first rotating shaft, and the outer wall of the first auger piece and the inner wall of the arc-shaped filter screen fit each other; a blanking plate is provided at the bottom end of the frame, and the blanking plate is inclined, and the highest end of the blanking plate is located directly above the opening of the side wall of the receiving cover; A hot air unit is provided on the first rotating shaft, and the arc filter is preliminarily dried by the hot air unit; scraping units are provided on both sides of the fixed block, and the scraping units scrape the outer surface of the first auger piece; a collecting unit is provided on the frame body, and the collecting unit collects the material filtered by the arc filter; the first rotating shafts are rotated by a power unit.

[0007] Preferably, the scraper unit includes a scraper column; the side edges of the scraper column and the side edges of the first auger piece are parallel to each other; the cross section of the fixed block is an isosceles triangle; first grooves are provided on both sides of the fixed block; first slide grooves are provided at the bottom ends of the first grooves; a first slider is provided in the first groove, and the bottom end of the first slider is slidably connected in the first slide groove; a rotating column is fixedly connected to the side wall of the scraper column away from the first rotating axis, and the end of the rotating column is located on the side wall of the first slider; both sides of the first slider are fixedly connected to the side walls of the first slide groove by first springs and second springs respectively; a group of first through grooves are provided on the first auger piece, and a group of first through grooves are located on the same horizontal plane.

[0008] Preferably, the power unit includes a first gear and a second gear; the first rotating shaft is located on the outer end of the receiving cover and is fixedly connected to the first gear; the outer wall of the receiving cover is rotatably connected to the second gear via the second rotating shaft; a pair of the first gears are symmetrically arranged about the second gear, and the pair of first gears are respectively meshed with the second gear.

[0009] Preferably, a convex cavity is provided in the fixed block; a convex block is slidably connected in the convex cavity; second grooves are provided on the side walls on both sides of the convex block; a rack plate is fixedly connected to the bottom of the second groove; the side wall of the first groove and the convex cavity are connected to each other; the rotating column is rotatably connected to the first sliding block, and the end of the rotating column penetrates into the convex cavity and is provided with a third gear; the third gear and the rack plate are meshed with each other; the convex block moves back and forth through the circulation unit.

[0010] Preferably, the circulation unit includes a circulating screw; the end of the second rotating shaft away from the second gear extends into the convex cavity, and the shaft body of the second rotating shaft located in the convex cavity is a circulating screw, and the convex block is connected to the circulating screw through a screw nut pair.

[0011] Preferably, a hollow shaft is fixedly connected to the side wall of the third gear, and the hollow shaft is rotatably connected to the side wall of the first slider; the end of the rotating column extends into the hollow shaft; a group of crescent grooves are provided on the inner wall of the hollow shaft; the rotating column is located on the outer wall of the hollow shaft and a pair of symmetrically distributed third grooves are provided; a locking block is fixedly connected to the bottom of the third groove through a spring, and the end of the locking block is an arc-shaped surface, and the pair of locking blocks are symmetrically arranged about the center point of the rotating column.

[0012] Preferably, the hot air unit includes a hollow cavity; a hollow cavity is opened in the first rotating shaft; a group of air outlet holes are opened on the outer wall of the first rotating shaft, and the group of air outlet holes and the hollow cavity are interconnected; an air inlet pipe is rotatably connected to the end of the first rotating shaft, and the air inlet pipe and the hollow cavity are interconnected.

[0013] Preferably, two groups of symmetrically distributed first slide plates and second slide plates are slidably connected on the bottom end of the convex cavity, and the first slide plate and the second slide plate are staggered front to back and left to right; a pair of arc grooves are provided at the bottom ends of the first slide plate and the second slide plate; a group of second through grooves are provided at the bottom end of the fixed block, and the positions of the second through grooves and the arc grooves correspond to each other; a group of fixed plates are fixedly connected to the bottom end of the fixed block; corrugated grooves are provided at the top ends of the first slide plate and the second slide plate; two groups of symmetrically distributed sliding rods are fixedly connected to the bottom end of the convex block, and one group of sliding rods is on the same vertical plane; the sliding rod is slidably connected in the corrugated groove; a telescopic rod is rotatably connected in the arc groove via a rotating shaft, and the side wall of the telescopic rod is rotatably connected to the side wall of the fixed plate via a rotating shaft, and a vibration ball is fixedly connected to the bottom end of the telescopic rod.

[0014] Preferably, the highest end position of the unloading plate is hinged on the frame; a group of top plates are provided at the top of the fixed block, and the top of the top plate and the bottom end of the unloading plate are in contact with each other, and a group of top plates are successively increased in height; the bottom end of the top plate passes through the fixed plate and is located in the convex cavity; a third through groove is opened at the bottom end of the top plate; a group of arc blocks are fixedly connected to the top of the convex block, and the positions of the arc blocks and the third through grooves correspond, and when the top plate is at the lowest point, the top wall of the third through groove is lower than the highest point of the arc block; when the convex block moves back and forth, the top plate is lifted up by the arc block.

[0015] Preferably, the collecting unit includes a collecting hood; the collecting hood is located below the receiving hood, and the collecting hood is arranged on the bottom end; a second auger piece is provided in the collecting hood; a lifting hood is fixedly connected to the side wall of the frame; a vertical conveyor belt is provided in the lifting hood, and the side wall at the bottom end of the lifting hood is connected to the collecting hood, and when the second auger piece rotates, it drives the collected material into the lifting hood, rises through the conveyor belt, and flows out through the top opening of the lifting hood for collection.

[0016] The beneficial effects of the present invention are as follows: 1. The rear-mounted corn return machine described in the present invention first collects the husk pieces and corn kernels separated by the fish-scale threshing roller and drops them at the initial end of the first auger piece through a discharge plate, so that the corn kernels can be transported to the farthest distance and the corn kernels can be transported far enough, which is convenient for threshing operations through an arc filter, thereby ensuring the separation of husk pieces and corn kernels. At the same time, when the first auger piece rotates for transportation, the hot air unit can be used to preliminarily dry the corn kernels and husk pieces that have fallen, thereby reducing the clumping of corn kernels and effectively reducing the attachment of husk pieces. At the same time, the scraping unit will scrape the surface of the first auger piece to avoid husk pieces or other impurities adhering to the surface of the first auger piece, thereby effectively ensuring the transportation efficiency of the first auger piece.

[0017] 2. The rear-mounted corn returner described in the present invention, when the convex block moves back and forth through the circulating screw, it will slide in the corrugated groove through the sliding rod, thereby driving the movement of the first slide plate and the second slide plate. The movement of the first slide plate and the second slide plate can drive the telescopic rod to rotate, thereby driving the vibrating ball to collide with the arc filter net, further ensuring the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 The present invention is a three-dimensional Figure 1 ; Figure 2 The present invention is a three-dimensional Figure 2 ; Figure 3 It is a three-dimensional structure of the peeling and threshing mechanism. Figure 1 ; Figure 4 It is a three-dimensional structure of the peeling and threshing mechanism. Figure 2 ; Figure 5 It is a three-dimensional Figure 1 ; Figure 6 It is a three-dimensional Figure 2 ; Figure 7 is a display diagram of the first rotating shaft and the fixed block; Figure 8 is a top cross-sectional view of the fixed block; Fig. 9 It is a side profile of the fixed block Figure 1 ; Fig.10 It is a cross-sectional view of a hollow shaft; Fig.11 It is a bottom view of the fixed block; Fig.12 It is a side profile of the fixed block Figure 2 ; Fig.13 It is the internal structure diagram of the fixed block; Fig.14 It is a local exploded view within a fixed block; In the figure: 1, vehicle body; 11, conveying mechanism; 12, peeling and threshing mechanism; 13, frame; 14, fish scale threshing roller; 15, guide roller; 2, receiving cover; 21, arc filter; 22, fixing block; 23, first auger piece; 24, first rotating shaft; 25, unloading plate; 3, first through groove; 31, first groove; 32, first slide groove; 33, first slider; 34, scraping column; 35, rotating column; 36, first spring; 37, second spring; 4, first gear; 41, second gear; 42, second rotating shaft; 5, convex cavity; 51, Circulating screw; 52, convex block; 53, third gear; 54, second groove; 55, rack plate; 6, hollow shaft; 61, third groove; 62, positioning block; 63, crescent groove; 64, hollow cavity; 65, air outlet; 66, air inlet pipe; 7, sliding rod; 71, first slide plate; 72, second slide plate; 73, corrugated groove; 74, second through groove; 75, fixing plate; 76, arc groove; 77, telescopic rod; 78, vibrating ball; 8, top plate; 81, third through groove; 82, arc block; 9, collecting cover; 91, second auger piece; 92, lifting cover. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figures 1 to 14As shown, a rear-mounted corn returner according to an embodiment of the present invention comprises a vehicle body 1; a feeding mechanism, a conveying mechanism 11 and a peeling and threshing mechanism 12 are provided on the vehicle body 1; the peeling and threshing mechanism 12 comprises a frame 13 and fish scale threshing rollers 14; a group of fish scale threshing rollers 14 are rotatably connected in the frame 13; a group of guide rollers 15 are rotatably connected in the frame 13, and the guide rollers 15 are located above the fish scale threshing rollers 14, and the guide rollers 15 and the fish scale threshing rollers 14 are perpendicular to each other; a receiving cover 2 is fixedly connected to the bottom end of the frame 13, and one side of the receiving cover 2 is in an open state; arc-shaped filter screens 21 are fixedly connected to both sides of the bottom end of the receiving cover 2, and the receiving cover A fixed block 22 is fixedly connected to the middle of the bottom end of the housing 13, a pair of arc-shaped filter screens 21 are symmetrically arranged about the fixed block 22, and the arc-shaped filter screens 21 and the fixed block 22 are fixedly connected; a pair of first rotating shafts 24 symmetrically distributed about the fixed block 22 are rotatably connected on the side wall of the receiving cover 2 away from the opening, and the center of the first rotating shaft 24 and the center of the arc-shaped filter screen 21 coincide with each other; a first auger piece 23 is fixedly connected to the first rotating shaft 24, and the outer wall of the first auger piece 23 and the inner wall of the arc-shaped filter screen 21 fit each other; a blanking plate 25 is provided at the bottom end of the frame body 13, and the blanking plate 25 is inclined, and the highest end of the blanking plate 25 is located directly above the opening of the side wall of the receiving cover 2; A hot air unit is provided on the first rotating shaft 24, and the arc filter 21 is preliminarily dried by the hot air unit; scraping units are provided on both sides of the fixed block 22, and the scraping units scrape the outer surface of the first auger piece 23; a collecting unit is provided on the frame 13, and the collecting unit collects the material filtered by the arc filter 21; a pair of the first rotating shafts 24 are rotated by a power unit; in the prior art, when corn is harvested and the stalks and corn husks are returned to the field, large-scale mechanical harvesting is generally used, but the existing device has the following problems: when the corn is peeled and threshed, the husk pieces and corn husks are The rice grains need to be filtered, and then the corn grains are collected, and the bracts are returned to the field for treatment. However, the separation of corn grains and bracts is generally carried out by auger blades and filter nets. However, sometimes farmers harvest corn in the milky stage (later stage, when the hardness of corn grains meets the automatic harvesting requirement) in order to sow winter wheat in advance or due to weather reasons. However, when the bracts are peeled at this time, because the bracts are not completely dry, but green-yellow or slightly yellow, they have more moisture. When the bracts are peeled and filtered, they are easy to adhere to the auger blades. Long-term attachment and accumulation affect the rotation of the auger blades to separate the bracts and The corn kernels have too much moisture, which will cause inconvenience in filtering and easy to cause blockage, affecting the overall harvesting efficiency. It is also easy for some corn kernels to fall off the filter and onto the soil, causing losses. For this reason, when the present invention is working, the feeding mechanism, conveying mechanism 11 and peeling and threshing mechanism 12 of the vehicle body 1 are all prior art, and the internal structure is not elaborated in detail. The prior art is to cut the stalks of corn stalks through the feeding mechanism when feeding (returning the stalks to the field), and then send the corn husks into the peeling and threshing mechanism 12 through the conveying mechanism 11. When the peeling and threshing mechanism 12 is working, the corn husks are transported through the guide rollers 15. The rice husk is then peeled and threshed by the fish scale threshing roller 14, and then the corn cob is transported out, and the husk pieces and corn kernels will fall into the receiving cover 2 through the unloading plate 25, and the unloading plate 25 can transport the husk pieces and corn kernels to the end of the first auger piece 23, and then the power unit drives a pair of first rotating shafts 24 to rotate, thereby driving a pair of first auger pieces 23 to transport the corn kernels to the opening of the side wall of the receiving cover 2, and then the corn kernels are filtered and dropped through the arc filter 21 during the transportation process, and then the husk pieces are discharged through the first auger piece 23, so that the corn kernels and husk pieces are separated;The unloading plate 25 first collects the husk pieces and corn kernels separated by the fish-scale threshing roller 14 and drops them at the initial end of the first auger piece 23, so that the corn kernels can be transported to the farthest distance, and the corn kernels can be transported to a sufficient distance, so that the threshing operation can be performed through the arc filter 21 to ensure that the husk pieces and corn kernels are separated. At the same time, when the first auger piece 23 rotates and transports, the corn kernels and husk pieces that have fallen can be preliminarily dried by the hot air unit to reduce the agglomeration of corn kernels and effectively reduce the attachment of husk pieces. At the same time, the scraping unit will scrape the surface of the first auger piece 23 to avoid husk pieces or other impurities adhering to the surface of the first auger piece 23, effectively ensuring the transportation efficiency of the first auger piece 23. ;

[0022] The scraper unit includes a scraper column 34; the side of the top view cross section of the scraper column 34 and the side of the top view cross section of the first auger piece 23 are parallel to each other; the cross section of the fixed block 22 is an isosceles triangle; both sides of the fixed block 22 are provided with a first groove 31; the bottom end of the first groove 31 is provided with a first slide groove 32; the first groove 31 is provided with a first slider 33, and the bottom end of the first slider 33 is slidably connected in the first slide groove 32; the side wall of the scraper column 34 away from the first rotating shaft 24 is fixedly connected with a rotating column 35, The end of the rotating column 35 is located on the side wall of the first slider 33; the two sides of the first slider 33 are fixedly connected to the side walls of the first slide groove 32 by the first spring 36 and the second spring 37 respectively; a group of first through grooves 3 are opened on the first auger piece 23, and a group of first through grooves 3 are located on the same horizontal plane; when working, in the initial state, the first spring 36 and the second spring 37 both push the first slider 33 to one side of the first slide groove 32, at this time, the scraper column 34 does not contact the surface of the first auger piece 23 but is very close to each other, and then at this time When the first auger piece 23 rotates, the first auger piece 23 just contacts with the scraper column 34 after rotation, thereby pushing the scraper column 34, the rotating column 35 and the first slider 33 to slide in the first groove 31. At the same time, when the first auger piece 23 pushes the scraper column 34 to move, the first auger piece 23 will be scraped by the scraper column 34. At the same time, the side edge of the top section of the scraper column 34 and the side wall of the top section of the first auger piece 23 are parallel to each other, and the first auger piece 23 can rotate to contact with the scraper column 34 (the outer surface of the scraper column 34). At the same time, because a group of first through grooves 3 are provided on the first auger piece 23, the first rotating shaft 24 drives the first auger piece 23 to rotate, and the scraper column 34 is pushed by the first auger piece 23. When the scraper column 34 is located in the first through groove 3, the scraper column 34 will return to its original position again under the action of the first spring 36 and the second spring 37. The scraper column 34 can move back and forth, thereby ensuring the cleaning of the outer surface of the first auger piece 23 (the scraper column 34 and the first auger piece 23 are in line contact).

[0023] The power unit includes a first gear 4 and a second gear 41; the first rotating shaft 24 is located on the outer end of the receiving cover 2 and is fixedly connected to the first gear 4; the second gear 41 is rotatably connected to the outer wall of the receiving cover 2 through the second rotating shaft 42; a pair of the first gears 4 are symmetrically arranged about the second gear 41, and the pair of first gears 4 are respectively meshed with the second gear 41; when working, because the pair of first gears 4 are symmetrically arranged about the second gear 41, and the pair of first gears 4 are respectively meshed with the second gear 41, because the first rotating shaft 24 will pass through an external device (such as a motor, a sprocket chain, etc., the prior art will not be elaborated), and then through the setting of the pair of first gears 4 and the second gear 41, the pair of first rotating shafts 24 can rotate in opposite directions, and because the pair of first auger pieces 23 are symmetrically arranged about the fixed block 22, the pushing directions of the pair of first auger pieces 23 are ensured to be the same.

[0024] The fixed block 22 is provided with a convex cavity 5; a convex block 52 is slidably connected in the convex cavity 5; second grooves 54 are provided on the side walls on both sides of the convex block 52; a rack plate 55 is fixedly connected to the bottom of the second groove 54; the side wall of the first groove 31 and the convex cavity 5 are communicated with each other; the rotating column 35 is rotatably connected to the first slider 33, and the end of the rotating column 35 penetrates into the convex cavity 5 and is provided with a third gear 53; the third gear 53 and the rack plate 55 are meshed with each other; the convex block 52 moves back and forth through the circulation unit; The circulation unit includes a circulation screw 51; the end of the second rotating shaft 42 away from the second gear 41 extends into the convex cavity 5, and the shaft body of the second rotating shaft 42 located in the convex cavity 5 is the circulation screw 51, and the convex block 52 is connected to the circulation screw 51 through a screw nut pair; During operation, when the first rotating shaft 24 rotates, it will drive the second rotating shaft 42 and the circulating screw 51 to rotate through the meshing of the first gear 4 and the second gear 41, and then drive the convex block 52 to move back and forth. Because the rack plate 55 and the third gear 53 are meshed with each other, and the rack plate 55 moves back and forth with the convex block 52, it drives the third gear 53 to rotate, and then drives the rotating column 35 and the scraper column 34 to rotate. The rotational force can effectively improve the scraping effect of the scraper column 34. At the same time, the rotation of the scraper column 34 can also effectively avoid the obstruction of the bracts when the scraper column 34 returns to its original position.

[0025] A hollow shaft 6 is fixedly connected to the side wall of the third gear 53, and the hollow shaft 6 is rotatably connected to the side wall of the first slider 33; the end of the rotating column 35 extends into the hollow shaft 6; a group of crescent grooves 63 are provided on the inner wall of the hollow shaft 6; the rotating column 35 is located on the outer wall of the hollow shaft 6 and a pair of symmetrically distributed third grooves 61 are provided; the bottom of the third groove 61 is fixedly connected to a positioning block 62 through a spring, and the end of the positioning block 62 is an arc surface, and the pair of positioning blocks 62 are symmetrically arranged about the center point of the rotating column 35; when working, the rotating column 35 is rotatably connected to the first slider 33, and a damping force is provided at the rotating position (the prior art, such as increasing the rotation of the rotating column 35 The friction at the connection, etc., will not be elaborated in detail), and then through the setting of the positioning block 62 and the crescent groove 63, the rotating column 35 and the scraper column 34 can rotate counterclockwise, and then the scraper column 34 can scrape upward (the scraper column 34 rotates clockwise, which will cause the scraped impurities to mix with the corn kernels downward, affecting the filtration of the corn kernels), effectively clearing the cleaning of the first auger piece 23, and also effectively preventing impurities from affecting the filtration of corn kernels. At the same time, when the third gear 53 and the rack plate 55 are meshed, the back and forth movement of the rack plate 55 will not affect the action of the first slider 33 under the first spring 36 and the second spring 37 (the spring force offsets the meshing force of the third gear 53 and the rack plate 55).

[0026] The hot air unit includes a hollow cavity 64; a hollow cavity 64 is opened in the first rotating shaft 24; a group of air outlet holes 65 are opened on the outer wall of the first rotating shaft 24, and a group of air outlet holes 65 and the hollow cavity 64 are interconnected; the end of the first rotating shaft 24 is rotatably connected to an air inlet pipe 66, and the air inlet pipe 66 and the hollow cavity 64 are interconnected; when working, when the first auger piece 23 is working, the hot air will be discharged through the hollow cavity 64 and the air outlet holes 65, which can effectively preliminarily dry the bract pieces and corn kernels, reduce moisture, effectively avoid the bract pieces and corn kernels from sticking together, and can also effectively ensure the filtering effect of the arc filter net 21.

[0027] Two groups of symmetrically distributed first slide plates 71 and second slide plates 72 are slidably connected on the bottom end of the convex cavity 5, and the first slide plates 71 and second slide plates 72 are staggered front to back and left to right; a pair of arc grooves 76 are provided at the bottom ends of the first slide plates 71 and second slide plates 72; a group of second through grooves 74 are provided at the bottom end of the fixed block 22, and the positions of the second through grooves 74 and the arc grooves 76 correspond to each other; a group of fixed plates 75 are fixedly connected to the bottom end of the fixed block 22; corrugated grooves 73 are provided at the top ends of the first slide plates 71 and second slide plates 72; two groups of symmetrically distributed sliding rods 7 are fixedly connected to the bottom end of the convex block 52, and one group of sliding rods 7 are all on the same vertical plane; the sliding rods 7 are slidably connected in the corrugated grooves 73; a telescopic rod 77 is rotatably connected in the arc groove 76 through a rotating shaft, and the side wall of the telescopic rod 77 is connected by the rotating shaft The bottom end of the telescopic rod 77 is fixedly connected to the side wall of the fixed plate 75, and a vibrating ball 78 is fixedly connected to the bottom end of the telescopic rod 77; when working, the convex block 52 will slide in the corrugated groove 73 through the sliding rod 7 when moving back and forth through the circulating screw 51, thereby driving the movement of the first slide plate 71 and the second slide plate 72. The movement of the first slide plate 71 and the second slide plate 72 can drive the telescopic rod 77 to rotate, thereby driving the vibrating ball 78 to collide with the arc filter screen 21, further ensuring the filtering effect. At the same time, because the first slide plate 71 and the second slide plate 72 are staggered front and back and left and right, it is ensured that the first slide plate 71 and the second slide plate 72 are connected to the vibrating ball 78 through the telescopic rod 77 at different states (collision state and non-collision state) at all times, thereby effectively ensuring the collision frequency with the arc filter screen 21 and ensuring the filtering effect of the arc filter screen 21.

[0028] The top end of the blanking plate 25 is hinged on the frame 13; a group of top plates 8 are provided at the top of the fixed block 22, and the top of the top plate 8 and the bottom of the blanking plate 25 are in contact with each other, and a group of top plates 8 are successively increased; the bottom end of the top plate 8 passes through the fixed plate 75 and is located in the convex cavity 5; a third through groove 81 is opened at the bottom end of the top plate 8; a group of arc blocks 82 are fixed on the top of the convex block 52, and the positions of the arc blocks 82 and the third through groove 81 correspond to each other, and when the top plate 8 is at the lowest point, the top wall of the third through groove 81 It is lower than the highest point of the arc block 82; when the convex block 52 moves back and forth, the top plate 8 is lifted up by the arc block 82; during operation, the back and forth movement of the convex block 52 can be set through the arc block 82 and the third through groove 81, so that the top plate 8 moves up, and then the lowering plate 25 is pushed up, and then after the arc block 82 and the third through groove 81 are misaligned, the lowering plate 25 moves down under the action of its own gravity and the gravity of the material, and the cycle is repeated, thereby ensuring the unloading of the lowering plate 25 and avoiding the accumulation of bract pieces and corn kernels.

[0029] The collecting unit includes a collecting cover 9; the collecting cover 9 is located below the receiving cover 2, and the collecting cover 9 is arranged on the bottom end; a second auger piece 91 is arranged in the collecting cover 9; a lifting cover 92 is fixedly connected to the side wall of the frame 13; a vertical conveyor belt is arranged in the lifting cover 92, and the side wall of the bottom end of the lifting cover 92 is connected with the collecting cover 9, and when the second auger piece 91 rotates, it drives the collected material to enter the lifting cover 92, rises through the conveyor belt, and flows out through the top opening of the lifting cover 92 for collection; when working, after being filtered by the arc filter 21, the corn kernels will fall into the collecting cover 9, and then through the action of the second auger piece 91 and the conveyor belt, it is discharged through the outlet of the lifting cover 92 (the parts in the collecting unit are also all prior art, wherein the rotation of the second auger piece 91 and the conveyor belt are both started by a motor, a sprocket chain, etc., and this is only to illustrate the operation after the corn kernels are filtered through the arc filter 21 to ensure the integrity of the overall device).

[0030] Working principle: When feeding corn stalks, the feeding mechanism is used to cut the stalks (return the stalks to the field), and then the corn husks are sent to the peeling and threshing mechanism 12 through the conveying mechanism 11. When the peeling and threshing mechanism 12 is working, the corn husks are conveyed through the guide rollers 15, and then the fish scale threshing rollers 14 drive the peeling and threshing, and then the corn cobs are conveyed out, and the husk pieces and corn kernels will fall into the receiving cover 2 through the unloading plate 25, and the unloading plate 25 can convey the husk pieces and corn kernels to the end of the first auger piece 23, and then the power unit drives a pair of first rotating shafts 24 to rotate, thereby driving a pair of first auger pieces 23 to convey , the corn kernels are conveyed to the opening of the side wall of the receiving cover 2, and then the corn kernels are filtered and dropped through the arc filter screen 21 during the conveying process, and then the husk pieces are discharged through the first auger piece 23, so as to separate the corn kernels and the husk pieces; wherein the husk pieces and corn kernels separated by the fish scale threshing roller 14 are first collected and dropped at the initial end of the first auger piece 23 through the unloading plate 25, so that the corn kernels can be conveyed to the farthest distance, so that the corn kernels can be conveyed a sufficient distance, and the threshing operation can be carried out conveniently through the arc filter screen 21, ensuring that the husk pieces and corn kernels are separated. At the same time, when the first auger piece 23 rotates for conveying, it can pass through the hot air unit The corn kernels and husk pieces that have fallen are preliminarily dried to reduce the agglomeration of the corn kernels and the attachment of the husk pieces. At the same time, the surface of the first auger piece 23 is scraped by the scraping unit to prevent the husk pieces or other impurities from being attached to the surface of the first auger piece 23, thereby effectively ensuring the conveying efficiency of the first auger piece 23. When the convex block 52 moves back and forth through the circulating screw 51, it slides in the corrugated groove 73 through the slide rod 7, thereby driving the movement of the first slide plate 71 and the second slide plate 72. The movement of the first slide plate 71 and the second slide plate 72 can drive the telescopic rod 77 to rotate, thereby driving the vibration ball 78 to filter the arc filter 2 1 performs collision operation to further ensure the filtering effect. At the same time, because the first slide plate 71 and the second slide plate 72 are staggered front and back and left and right, it is ensured that the first slide plate 71 and the second slide plate 72 are connected to the vibration ball 78 through the telescopic rod 77 and are always in different states; the back and forth movement of the convex block 52 can be set through the arc block 82 and the third through groove 81, so that the top plate 8 moves up, and then the unloading plate 25 is pushed up, and then after the arc block 82 and the third through groove 81 are misaligned, the unloading plate 25 moves down under the action of its own gravity and the gravity of the material, and the cycle is repeated, thereby ensuring the unloading of the unloading plate 25 and avoiding the unloading and accumulation of bract pieces and corn kernels.

[0031] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rear-mounted corn return machine, comprising a vehicle body (1); the vehicle body (1) is provided with a feeding mechanism, a conveying mechanism (11) and a peeling and threshing mechanism (12); the peeling and threshing mechanism (12) comprises a frame (13) and a fish scale threshing roller (14); a group of fish scale threshing rollers (14) are rotatably connected in the frame (13); a group of guide rollers (15) are rotatably connected in the frame (13), and the guide rollers (15) are located above the fish scale threshing rollers (14), and the guide rollers (15) and the fish scale threshing rollers (14) are perpendicular to each other; characterized in that: The bottom end of the frame (13) is fixedly connected to a receiving cover (2), and one side of the receiving cover (2) is in an open state; both sides of the bottom end of the receiving cover (2) are fixedly connected to arc-shaped filter screens (21), and the middle part of the bottom end of the receiving cover (2) is fixedly connected to a fixed block (22); a pair of arc-shaped filter screens (21) are symmetrically arranged about the fixed block (22), and the arc-shaped filter screens (21) and the fixed block (22) are fixedly connected; a pair of arc-shaped filter screens (21) are rotatably connected to the side wall of the receiving cover (2) away from the opening, and the fixing block (22) is fixedly connected to the fixing block (2); 2) a first rotating shaft (24) symmetrically distributed, and the center of the first rotating shaft (24) and the center of the arc-shaped filter screen (21) coincide with each other; a first auger piece (23) is fixedly connected to the first rotating shaft (24), and the outer wall of the first auger piece (23) and the inner wall of the arc-shaped filter screen (21) fit each other; a blanking plate (25) is provided at the bottom end of the frame (13), and the blanking plate (25) is inclined, and the highest end of the blanking plate (25) is located directly above the opening of the side wall of the receiving cover (2); A hot air unit is provided on the first rotating shaft (24), and the hot air unit is used to perform preliminary drying treatment on the inside of the arc filter (21); scraping units are provided on both sides of the fixed block (22), and the scraping units perform scraping treatment on the outer surface of the first auger piece (23); a collecting unit is provided on the inside of the frame (13), and the collecting unit collects substances filtered by the arc filter (21); the pair of first rotating shafts (24) are rotated by a power unit.

2. The rear-mounted corn returning machine according to claim 1, characterized in that: The scraper unit comprises a scraper column (34); the side edges of the top-view cross-section of the scraper column (34) and the side edges of the top-view cross-section of the first auger piece (23) are parallel to each other; the cross-section of the fixed block (22) is an isosceles triangle; first grooves (31) are provided on both sides of the fixed block (22); a first slide groove (32) is provided at the bottom end of the first groove (31); a first slider (33) is provided in the first groove (31), and the bottom end of the first slider (33) is slidably connected in the first slide groove (32); a rotating column (35) is fixedly connected to the side wall of the scraper column (34) away from the first rotating shaft (24), and the end of the rotating column (35) is located on the side wall of the first slider (33); the two sides of the first slider (33) are fixedly connected to the side wall of the first slide groove (32) by a first spring (36) and a second spring (37) respectively; a group of first through grooves (3) are provided on the first auger piece (23), and the group of first through grooves (3) are located on the same horizontal plane.

3. The rear-mounted corn returning machine according to claim 2, characterized in that: The power unit comprises a first gear (4) and a second gear (41); the first rotating shaft (24) is located on the outer end of the receiving cover (2) and is fixedly connected to the first gear (4); the outer wall of the receiving cover (2) is rotatably connected to the second gear (41) via a second rotating shaft (42); a pair of the first gears (4) are symmetrically arranged with respect to the second gear (41), and the pair of the first gears (4) are respectively meshed with the second gear (41).

4. The rear-mounted corn returning machine according to claim 3, characterized in that: The fixed block (22) is provided with a convex cavity (5); a convex block (52) is slidably connected in the convex cavity (5); second grooves (54) are provided on both side walls of the convex block (52); a rack plate (55) is fixedly connected to the bottom of the second groove (54); the side wall of the first groove (31) and the convex cavity (5) are communicated with each other; the rotating column (35) is rotatably connected to the first sliding block (33), and the end of the rotating column (35) is deeply inserted into the convex cavity (5) and is provided with a third gear (53); the third gear (53) and the rack plate (55) are meshed with each other; and the convex block (52) moves back and forth through the circulation unit.

5. The rear-mounted corn returning machine according to claim 4, characterized in that: The circulation unit comprises a circulation screw (51); the end of the second rotating shaft (42) away from the second gear (41) extends into the convex cavity (5), and the shaft body of the second rotating shaft (42) located in the convex cavity (5) is the circulation screw (51), and the convex block (52) is connected to the circulation screw (51) through a screw nut pair.

6. The rear-mounted corn returning machine according to claim 5, characterized in that: A hollow shaft (6) is fixedly connected to the side wall of the third gear (53), and the hollow shaft (6) is rotatably connected to the side wall of the first slider (33); the end of the rotating column (35) extends into the hollow shaft (6); a group of crescent grooves (63) are provided on the inner wall of the hollow shaft (6); a pair of symmetrically distributed third grooves (61) are provided on the outer wall of the rotating column (35) located on the hollow shaft (6); a locking block (62) is fixedly connected to the bottom of the third groove (61) through a spring, and the end of the locking block (62) is an arc surface, and the pair of locking blocks (62) are symmetrically arranged about the center point of the rotating column (35).

7. The rear-mounted corn returning machine according to claim 1, characterized in that: The hot air unit comprises a hollow cavity (64); the first rotating shaft (24) is provided with a hollow cavity (64); a group of air outlet holes (65) are provided on the outer wall of the first rotating shaft (24), and the group of air outlet holes (65) and the hollow cavity (64) are interconnected; an air inlet pipe (66) is rotatably connected to the end of the first rotating shaft (24), and the air inlet pipe (66) and the hollow cavity (64) are interconnected.

8. The rear-mounted corn returning machine according to claim 6, characterized in that: The bottom end of the convex cavity (5) is slidably connected to two groups of symmetrically distributed first slide plates (71) and second slide plates (72), and the first slide plates (71) and the second slide plates (72) are staggered front to back and left to right; a pair of arc grooves (76) are provided at the bottom ends of the first slide plates (71) and the second slide plates (72); a group of second through grooves (74) are opened at the bottom end of the fixed block (22), and the positions of the second through grooves (74) and the arc grooves (76) correspond to each other; a group of fixed plates (75) are fixedly connected to the bottom end of the fixed block (22); The top of the first slide plate (71) and the top of the second slide plate (72) are both provided with a corrugated groove (73); the bottom end of the convex block (52) is fixedly connected with two groups of symmetrically distributed sliding rods (7), and one group of sliding rods (7) is located on the same vertical plane; the sliding rod (7) is slidably connected in the corrugated groove (73); a telescopic rod (77) is rotatably connected in the arc groove (76) via a rotating shaft, and the side wall of the telescopic rod (77) is rotatably connected to the side wall of the fixed plate (75) via the rotating shaft, and a vibration ball (78) is fixedly connected to the bottom end of the telescopic rod (77).

9. The rear-mounted corn returning machine according to claim 8, characterized in that: The highest end position of the unloading plate (25) is hinged on the frame (13); a group of top plates (8) are provided at the top of the fixed block (22), and the top of the top plate (8) and the bottom of the unloading plate (25) are in contact with each other, and the group of top plates (8) are successively increased; the bottom end of the top plate (8) passes through the fixed plate (75) and is located in the convex cavity (5); a third through groove (81) is opened at the bottom end of the top plate (8); a group of arc blocks (82) are fixedly connected to the top of the convex block (52), and the positions of the arc blocks (82) and the third through groove (81) correspond, and when the top plate (8) is at the lowest point, the top wall of the third through groove (81) is lower than the highest point of the arc block (82); when the convex block (52) moves back and forth, the top plate (8) is lifted up by the arc block (82).

10. The rear-mounted corn returning machine according to claim 9, characterized in that: The collecting unit comprises a collecting hood (9); the collecting hood (9) is located below the receiving hood (2), and the collecting hood (9) is arranged on the bottom end; a second auger piece (91) is arranged inside the collecting hood (9); a lifting hood (92) is fixedly connected to the side wall of the frame (13); a vertical conveyor belt is arranged inside the lifting hood (92), and the side wall at the bottom end of the lifting hood (92) is connected to the collecting hood (9), and when the second auger piece (91) rotates, the collected material is driven into the lifting hood (92), and then rises through the conveyor belt and flows out through the top opening of the lifting hood (92) for collection.

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