Small automatic harvester

Abstract

A gasoline engine rotates reversely to drive a threshing wheel and a threshing shaft, the threshing shaft is provided with a threshing cylinder in a threshing compartment, the threshing cylinder is provided with large round baffles at the two ends, a small round baffle in the middle, three steel pipes and the threshing shaft, the threshing cylinder is divided into three parts by the four round baffles, threshing nails are welded outwards on the three steel pipes, and the threshing nails are connected with the threshing roller. The other end of the threshing shaft penetrates out of the threshing compartment, is round, is milled with a small section of small plane and is provided with a transmission main umbrella wheel, the main umbrella wheel and a transmission main belt wheel are integrated, and the main umbrella wheel and the threshing shaft are fixed by a screw nailed on the small section of plane, so that the integrated screw of the threshing shaft and the transmission main belt wheel rotates along with the shaft after being fastened; when the screw is loosened, the threshing cylinder rotates; the height of the whole field grain piles can be controlled to be consistent according to needs, the grain piles are not crushed, and the stable yield of ratooning rice is ensured.

Description

Technical Field

[0001] The invention relates to a small automatic harvester. Background Art

[0002] Harvesters can be seen everywhere, large and small, fully automatic, semi-automatic, half-feeding, and full-feeding. People like full-feeding threshers very much, but they need to be cut manually and fed in handfuls, which is still a bit labor-intensive; large, fully automatic harvesters like Kubota are very labor-saving and inexpensive, costing about 150 yuan per mu, because Kubota can only operate freely in dry fields, but it can produce 150 to 200 kilograms of millet per mu, and the rice seedlings grown are denser than those sown in spring.

[0003] In summary, an ultra-small and light automatic harvester that can meet the above requirements and operate in muddy paddy fields has come into being. Summary of the invention

[0004] A small automatic harvester is characterized in that: a gasoline engine 1 rotates counterclockwise to drive a threshing wheel 2 and a threshing shaft 2A, the threshing shaft 2A has: large circular baffles at both ends and a small circular baffle in the middle in the threshing chamber, three steel pipes and the threshing shaft 2A form a threshing drum, four circular baffles divide the threshing drum into three sections, and three steel pipes are welded with threshing nails 2B outwardly;

[0005] The other end of the threshing shaft 2A passes through the threshing chamber, which is round but with a small flat surface milled out, and has a transmission main umbrella wheel 3 on it. The main umbrella wheel 3 and the transmission main pulley 3A are integrated, and it and the threshing shaft 2A are fixed on the small flat surface by a screw, so that the threshing shaft 2A and the transmission main pulley 3A, which are integrated, rotate with the shaft when the screw is tightened, and the threshing drum alone rotates when the screw is loosened;

[0006] The main umbrella wheel 3 drives the umbrella wheel 4A and the coaxial flat main belt wheel 4 to rotate clockwise, driving the cutter top belt wheel 5. The coaxial lower end of the cutter top belt wheel 5 is equipped with a cutter main wheel 5A, and the other side in front is equipped with a cutter belt tightening wheel 5B. The cutter belt 5C is sleeved on these two wheels. The cutter belt 5C is fixed with a cutter of about 3 cm long and about 2 cm wide, with the tip of the knife facing outward and bent toward the rear of the operation, and the interval is about 30 cm.

[0007] The cutter top pulley 5 has a synchronous small wheel 7 under it, which drives a synchronous large wheel 7A with a synchronous belt. The synchronous large wheel 7A has a pulley on it to drive the main wheel 6 of the top of the grain-pulling top. The top of the grain-pulling top is tightened by a pulley 38, which is used to bend the top belt of the grain-pulling top, so that each top wheel of the grain-pulling top is stressed.

[0008] The device for shaking the grains is that the shaft of the main wheel 6 on the top of the grain shaking machine extends downward; the plastic grain shaking bucket 6A is an irregular triangular bucket, the bottom of the bucket is connected and fixed to the bottom of the top bracket, and the bucket mouth is downward; the front is the grain dividing tip 35, one side is smooth and extends to the bottom of the grain shaking belt 12, and the other side is shorter, so that the grain shaking belt 12 is exposed, and the grain shaking bracket 6B is installed on this side and fixed on the bucket mouth; the length of the back side is basically the same as this side; the presser foot telescopic device 34 is fixed on the grain shaking bracket 6B; the shaft of the main wheel 6 on the top of the grain shaking machine passes through the grain shaking bucket 6A downward, the main belt pulley 9 of the grain shaking machine is connected to the bottom and rear of the grain shaking bracket 6B, and the grain shaking belt tightening wheel 11 is also installed in the front below the grain shaking bracket 6B; the grain shaking belt 12 is sleeved on these two wheels; the grain shaking belt 12 has whiskers like a rubber broom, which are about 5 cm long, like toothbrush bristles in rows, harder than toothbrush bristles, and the rows are about 5 cm apart;

[0009] The synchronous large wheel 7A drives the catching shaft 8; the catching shaft 8 has a catching belt main wheel 10, and a catching belt tightening wheel 10A on the other side in front, and the catching belt 10B is set on these two wheels; the catching belt 10B has a width of about 6 cm, and the same catching nails are arranged on both sides, and the catching nails are about 4 cm high and about 5 cm apart. It catches the ear of grain rod 36 sent by the catching belt 12, and is controlled by a presser foot 33 outside; the ear of grain rod is smooth behind and behind each catching barrel 6A. The ear of grain channel 41 composed of smooth aluminum alloy wall panels moves forward, and the ear of grain sent by the next grain-pulling belt 12 is on the back of the tail of the presser foot 33. The part of the grain-grabbing nail that is higher than the back of the presser foot grabs it and enters the opposite side of the back of the next presser foot and is taken away; because it is in the middle of the two grain-grabbing nails, the ear of grain comes to the final position of the grain-grabbing shaft 8 under the operation of the grain-grabbing belt 10B. At this time, all the ear of grain is still upward, and the weight of the ear of grain will bend downward; the grabbing nail The grain grabbing accelerating wheel 8A on the grain shaft 8 is 1.6 times the diameter of the main wheel 10 of the grain grabbing belt. The grain grabbing nails of the grain grabbing accelerating wheel 8A rotate about 1.6 times faster than the grain grabbing nails on the grain grabbing belt 10B that turns 180 degrees on the main wheel 10 of the grain grabbing belt. The grain grabbing accelerating wheel 8A rotates 360 degrees without a belt, and only the grain grabbing nails grab the grain ear part. The weight of the grain ear is greater than the weight of the ear stem, which generates centrifugal force, and the grain ear part falls to the grain conveying belt 16 first; see the grain ear stem fall to 3 7; because the grain ear stalks 36 have not completely escaped from the constraints of the grain grabbing nails on the grain grabbing belt 10B at this time, the grain ears will first lie on the grain conveying belt 16 and enter the threshing gate 31A first. A small number of grain ear stalks have not fallen. As the grain grabbing nails of the grain grabbing accelerating wheel 8A retreat in the grain grabbing nail holes set in the grain grabbing accelerating wheel baffle 8B, all the grain ear stalks will be blocked by the grain grabbing accelerating wheel baffle 8B and fall down and lie on the grain conveying belt 16; enter the threshing gate 31A; the grain conveying belt 16 is transported from low to high;

[0010] The main transmission pulley 3A drives the transition belt large wheel 13, and the transition belt large wheel 13 has a coaxial large gear 13A and a transition belt small wheel 14; the large gear drives the small gear 15 and the coaxial grain conveying pulley 15A, the grain conveying belt tightening wheel 15B, and the grain conveying belt 16; the large gear drives the small gear to change the reverse rotation to the forward rotation and the speed of the grain conveying belt 16 is accelerated; the toothbrush-like hairs on the grain conveying belt 16 move quickly toward the threshing gate 31A in rows, and it drags in the grain ear stalks while dragging the flying grains back; there are also grain protection plates on both sides of the grain conveying belt 16, and all the grains can only enter the grain outlet screen 28, pass through the grain outlet 26, and enter the pocket; the threshing nails 2B in the threshing compartment pick up the grain ear stalks from the grain conveying belt 16 to enter the threshing operation.

[0011] In addition to the machine housing, threshing door 31A, grain discharging screen 28, grain discharging port 26, grass discharging device 29, door 27 that can be opened for discharging grain, and operating handle 30, there is also a machine cover 31. A threaded grain discharging knife 32 is arranged inside the machine cover 31. The thread slope of the threaded grain discharging knife 32 at the top of the threshing door 31A is relatively large, and the thread slopes of other threads are relatively small and consistent; the grains pass through the grain discharging screen 28 to the grain discharging port 26 and enter the bag; the machine operator holds the operating handle 30 and follows the machine;

[0012] When a person stands on the walking boat 22 close to the position of the person standing in the threshing box, the machine becomes semi-feeding; the threshing box is equipped with duck feet cloth to prevent grains from splashing; there is a protruding part behind the walking boat 22, which is used to hold a bag connected to the outlet 26; remove the belt of the flat main pulley 4, so that the automatic harvesting part in the front is disengaged, leaving the walking part still in the driving state, loosen the clutch device 25 or turn off the engine, loosen the integrated fastening screw of the transmission main pulley 3A, and start the machine to let it move to another pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached drawings, an embodiment of the present invention is illustrated by way of non-limiting example, and further features and advantages of the present invention will become more apparent in the detailed description that follows.

[0014] Attached Figure 1 This is a transmission diagram of a small automatic harvester.

[0015] Attached Figure 2 This is a top view of a small automatic harvester.

[0016] Attached Figure 3 This is the front view of a small automatic harvester.

[0017] Attached Figure 4 Schematic diagram of the grain ears entering the thresher of a small automatic harvester.

[0018] In the figure, 1: gasoline engine; 2: threshing wheel; 2A: threshing shaft; 2B: threshing nail; 3: driving main umbrella wheel; 3A: driving main pulley; 4: flat main pulley; 4A: umbrella wheel; 5: top pulley of cutting knife; 5A: main wheel of cutting knife; 5B: tensioning wheel of cutting knife belt; 5C: cutting knife belt; 6: threshing pulley; 6A: threshing bucket; 6B: threshing bracket; 7: synchronous small wheel; 7A: synchronous large wheel; 8: catching shaft; 8A: catching wheel of accelerating; 8B: catching wheel of accelerating; 9: threshing main pulley; 10: catching belt main wheel; 10A: catching belt tensioning wheel; 10B: catching belt; 11: threshing belt tensioning wheel; 12: threshing belt; 13: transition belt large wheel; 13A: large gear; 14: transition belt small wheel; 15: small gear; 15A: transmission Grain belt wheel; 15B: Grain conveying belt tensioning wheel; 16: Grain conveying belt; 17: Walking belt wheel; 18: Walking main sprocket; 19: Walking chain tensioning wheel; 20: Walking sprocket; 21: Walking gripping wheel; 22: Walking boat; 23: Walking driven wheel; 24: Connecting screw; 24A: Adjusting device; 25: Clutch device; 26: Grain outlet; 27: Door that can be opened for grain outlet; 28: Grain outlet screen; 29: Grass outlet device; 30: Operating handle; 31: Machine cover; 31A: Threshing door 32; Threaded grain discharge knife; 33: Presser foot; 34: Presser foot telescopic device; 35: Grain dividing tip; 36: Grain ear rod; 37: Grain ear rod inversion; 38: Grain top belt tensioning wheel; 39: Grain dividing knife; 40: Grain dividing knife paddle; 41: Grain ear rod channel. DETAILED DESCRIPTION

[0019] A small automatic harvester is characterized in that: a gasoline engine 1 rotates counterclockwise to drive a threshing wheel 2 and a threshing shaft 2A, the threshing shaft 2A has: large circular baffles at both ends and a small circular baffle in the middle in the threshing chamber, three steel pipes and the threshing shaft 2A form a threshing drum, four circular baffles divide the threshing drum into three sections, and three steel pipes are welded with threshing nails 2B outwardly;

[0020] The other end of the threshing shaft 2A passes through the threshing chamber, which is round but with a small flat surface milled out, and has a transmission main umbrella wheel 3 on it. The main umbrella wheel 3 and the transmission main pulley 3A are integrated, and it and the threshing shaft 2A are fixed on the small flat surface by a screw, so that the threshing shaft 2A and the transmission main pulley 3A, which are integrated, rotate with the shaft when the screw is tightened, and the threshing drum alone rotates when the screw is loosened;

[0021] The main umbrella wheel 3 drives the umbrella wheel 4A and the coaxial flat main belt wheel 4 to rotate clockwise, driving the cutter top belt wheel 5. The coaxial lower end of the cutter top belt wheel 5 is equipped with a cutter main wheel 5A, and the other side in front is equipped with a cutter belt tightening wheel 5B. The cutter belt 5C is sleeved on these two wheels. The cutter belt 5C is fixed with a cutter of about 3 cm long and about 2 cm wide, with the tip of the knife facing outward and bent toward the rear of the operation, and the interval is about 30 cm.

[0022] The cutter top pulley 5 has a synchronous small wheel 7 under it, which drives a synchronous large wheel 7A with a synchronous belt. The synchronous large wheel 7A has a pulley on it to drive a main wheel 6 (there are multiple top wheels for pulling the grain, only this one rotates counterclockwise, and the others rotate clockwise. There are also multiple other devices for pulling the grain, and the structures are the same); the top belt tensioning wheel 38 for pulling the grain is used to bend the top belt of the grain, so that each top wheel of the grain is stressed;

[0023] The device for shaking the grains is that the shaft of the main wheel 6 on the top of the grain shaking machine extends downward; the plastic grain shaking bucket 6A is an irregular triangular bucket, the bottom of the bucket is connected and fixed below the top bracket, and the bucket mouth is downward; the front is the grain dividing tip 35, one side is smooth and extends to the bottom of the grain shaking belt 12, and the other side is shorter, so that the grain shaking belt 12 is exposed, and the grain shaking bracket 6B is installed on this side and fixed on the bucket mouth; the length of the back side is basically the same as this side, because the presser foot 33 is installed; the presser foot telescopic device 34 is fixed on the grain shaking bracket 6B; the shaft of the main wheel 6 on the top of the grain shaking machine passes through the grain shaking bucket 6A downward, the main belt pulley 9 of the grain shaking machine is connected to the bottom and rear of the grain shaking bracket 6B, and the grain shaking belt tightening wheel 11 is also installed in the front below the grain shaking bracket 6B; the grain shaking belt 12 is set on these two wheels; the grain shaking belt 12 has whiskers like a rubber broom, and the whiskers are about 5 cm long and arranged in rows like toothbrush bristles, which are harder than toothbrush bristles, and the rows are about 5 cm apart;

[0024] The synchronous large wheel 7A drives the grain grabbing shaft 8 in the same body; the grain grabbing belt main wheel 10 is arranged at the lower end of the grain grabbing shaft 8, and the grain grabbing belt tightening wheel 10A is arranged at the other side in front, and the grain grabbing belt 10B is set on these two wheels; the grain grabbing belt 10B has a width of about 6 cm, and the same grain grabbing nails are arranged on both sides, and the grain grabbing nails are about 4 cm high and about 5 cm apart. It grabs the grain ear rod 36 sent by the grain-pulling belt 12, and of course there is a presser foot 33 outside to hold it, just like pinching it by hand, which can be more or less stable; the grain ear rod is smooth behind each grain-pulling barrel 6A. The ear of grain rod channel 41 composed of square and smooth aluminum alloy wall panels moves forward, and the ear of grain rod sent by the next grain-pulling belt 12 is on the back of the tail of the presser foot 33. The part of the grain-grabbing nail higher than the back of the presser foot grabs it and enters the opposite side of the back of the next presser foot and is taken away; because it is between the two grain-grabbing nails, the ear of grain rod comes to the final position of the grain-grabbing shaft 8 under the operation of the grain-grabbing belt 10B. At this time, all the ear of grain rods are still upward, and the weight of the ear of grain will bend downward; the grain-grabbing accelerating wheel 8A on the grain-grabbing shaft 8 is the grain-grabbing belt The grain grabbing spikes of the grain grabbing accelerating wheel 8A rotate about 1.6 times faster than the grain grabbing spikes on the grain grabbing belt 10B that turns 180 degrees on the main wheel 10 of the grain grabbing belt. The grain grabbing accelerating wheel 8A rotates 360 degrees without a belt, and only the grain grabbing spikes grab the grain ear part. The weight of the grain ear is greater than the weight of the ear stem, which generates centrifugal force, and the grain ear part falls to the grain conveying belt 16 first; as shown by the fall of the grain ear stem 37: because at this time the grain ear stem 36 has not completely broken free from the grain grabbing spikes on the grain grabbing belt 10B The grain ears lie on the grain conveying belt 16 first, and enter the threshing gate 31A first. A small number of grain ear stalks have not fallen. As the grain grabbing nails of the grain grabbing accelerating wheel 8A retreat in the grain grabbing nail holes specially provided in the grain grabbing accelerating wheel baffle 8B, all the grain ear stalks will be blocked by the grain grabbing accelerating wheel baffle 8B and fall down and lie on the grain conveying belt 16; enter the threshing gate 31A; this method is exactly the same as manual feeding, which is the key to the present invention; in addition, the grain conveying belt 16 is transported from low to high, which provides height space for the subsequent device;

[0025] The main transmission pulley 3A drives the transition belt large wheel 13, and the transition belt large wheel 13 has a coaxial large gear 13A and a transition belt small wheel 14; the large gear drives the small gear 15 and the coaxial grain conveying pulley 15A, the grain conveying belt tightening wheel 15B, and the grain conveying belt 16; the large gear drives the small gear to change the reverse rotation to the forward rotation and the speed of the grain conveying belt 16 is accelerated; in addition, the toothbrush-like hairs on the grain conveying belt 16 quickly move towards the threshing gate 31A in rows, and it drags in the grain ear stalks while dragging the flying grains back; there are also grain protection plates on both sides of the grain conveying belt 16, and all the grains can only enter the grain outlet screen 28, pass through the grain outlet 26, and enter the pocket; the threshing nails 2B in the threshing compartment pick up the grain ear stalks from the grain conveying belt 16 to enter the threshing operation (because it is a prior art, it will not be introduced).

[0026] The small automatic harvester is characterized in that: in addition to the machine housing, the threshing door 31A, the grain discharging screen 28, the grain discharging port 26, the grass discharging device 29, the door 27 that can be opened for discharging grain, and the operating handle 30, there is also a machine cover 31, and a threaded grain discharging knife 32 is arranged in the machine cover 31. The thread slope of the threaded grain discharging knife 32 at the top of the threshing door 31A is relatively large, so that the grain ear stems entering from the threshing door 31A can leave quickly and less grains can be splashed out of the threshing door 31A; the other thread slopes are relatively small and consistent, so that the grain ear stems can be hit more, and the cleaned grain straw can be blown out of the grass discharging device 29 by the fan at the rear of the threshing drum and returned to the field; the grains pass through the grain discharging screen 28 to the grain discharging port 26 and enter the bag; the machine operator holds the operating handle 30 and follows the machine;

[0027] To preserve the straw, the longer ones cut by hand are piled up in handfuls, and then the integrated fastening screw of the transmission main pulley 3A is loosened, and the machine is started. At this time, only the threshing drum rotates; a person stands on the walking boat 22 close to the position of the person standing in the threshing box, and the machine becomes semi-fed; the threshing box is equipped with duck feet cloth to prevent the grains from splashing; there is a protruding part at the back of the walking boat 22, which is specially used to hold the bag connected to the grain outlet 26; the belt of the flat main pulley 4 can also be removed to disengage the automatic harvesting part in the front, and the walking part is still in the driven state. After the operator finishes beating this pile, he releases the clutch device 25 or turns off the engine to stop the threshing drum, loosens the integrated fastening screw of the transmission main pulley 3A, and starts the machine to let it move to another pile.

[0028] There are multiple rice-pulling devices in front of the machine. The rice-pulling devices on both sides meet at the junction of the rice-pulling devices. The rice-pulling knife 39 is really like a large kitchen knife with the blade facing forward. Each rice-pulling device is like a large kitchen knife with the blade facing forward. Only when the machine moves forward can they separate the rushing and chaotic rice seedlings and follow the guidance of the rice-pulling device. Only when the ear stalk 36 is caught and held firmly can the cutting knife below cut it off. The rice-pulling knife paddle 40 at the rear of the rice-pulling knife 39 is like a traffic policeman, guiding the ear stalks coming from both sides. The machine has a clutch device 25 that tightens the belt on the gasoline engine 1 side and the harvester rotates, and loosens the belt and only the gasoline engine 1 rotates. There are also two screws 24 connecting the thresher and the walking boat 22 and an adjusting device 24A on both sides for adjusting the height of the grain pile.

[0029] The transition belt small wheel 14 drives the traveling belt pulley 17 and the traveling main sprocket 18 on the same axis. The chain of the traveling main sprocket 18 has a traveling chain tensioning wheel 19 to adjust the tightness, and can be sleeved on any tooth position of the traveling sprocket 20. If it is sleeved on a large tooth position, it will move slowly, and vice versa. The shaft of the traveling sprocket 20 extends out of the traveling boat 22, and a traveling gripping wheel 21 and a traveling driven wheel 23 are fixed on both sides. When the traveling chain is separated up and down, it is in the traveling boat 22; the front of the traveling boat 22 is a straight mouth, and the bottom is tilted upward for easy movement; in paddy fields, the blades of the traveling gripping wheel 21 extend into the mud to grip the ground, and the traveling driven wheel 23 is basically useless. In dry fields, the outer ring of the traveling gripping wheel 21 touches the ground to exert force, and the traveling driven wheel 23 is to maintain balance.

[0030] The small automatic harvester can control the height of the grain piles in the whole field to be consistent as needed. The grain piles weighing about 100 kg will not be crushed, ensuring the stable yield of regenerated rice. The operator holds the operating handle 30 degrees with both hands to control the direction and steering. The machine automatically moves, cuts, threshes, and winnows the grains, blows away the straw, and automatically puts the grains into bags.

[0031] The straw can be used as feed for cattle in winter, and can be spun into straw ropes for packaging of machine parts. Burning it is an energy source, and its ash is the best potassium fertilizer. Open the cover and turn it into a semi-feeding machine, and you can harvest the straw. The ultra-light and ultra-small self-propelled machine can protect the flatness of the fields and not form furrows and ridges. The key is that it is operated by one person, with a harvesting width of 1.4 meters and one acre can be harvested in two hours. The machine body, which combines full feeding and semi-feeding, is about 1.5 meters long, 1.2 meters high, and 1.4 meters wide. It moves automatically in the fields and on the road. When moving from one field to another, it can be divided into a walking boat and a harvester by moving four screws. Each one weighs only about 40-70 kilograms, and two elderly people can carry it. There is no need to dig field ridges, which reduces soil erosion and useless work in the fields. Harvesting more regenerated rice is what farmers want.

Claims

1. Small automatic harvester, characterized by: The gasoline engine (1) rotates counterclockwise to drive the threshing wheel (2) and the threshing shaft (2A). The threshing shaft (2A) is provided with large circular baffles at both ends and a small circular baffle in the middle in the threshing chamber. Three steel pipes and the threshing shaft (2A) form a threshing drum. The four circular baffles divide the threshing drum into three sections. Threshing nails (2B) are welded outwardly on the three steel pipes. The other end of the threshing shaft (2A) passes through the threshing chamber, is circular but has a small flat surface milled out, and has a transmission main umbrella wheel (3) on it. The main umbrella wheel (3) and the transmission main pulley (3A) are integrated, and the main umbrella wheel (3) and the threshing shaft (2A) are fixed on the small flat surface by a screw, so that the threshing shaft (2A) and the transmission main pulley (3A) rotate with the shaft when the screw is tightened, and the threshing drum alone rotates when the screw is loosened; The main umbrella wheel (3) drives the umbrella wheel (4A) and the coaxial flat main belt wheel (4) to rotate clockwise, driving the cutter top belt wheel (5), the cutter main wheel (5A) is coaxially arranged at the lower end of the cutter top belt wheel (5), and the cutter belt tightening wheel (5B) is arranged on the other side in front, and the cutter belt (5C) is sleeved on these two wheels, and the cutter belt (5C) is fixed with a cutter of about 3 cm in length and about 2 cm in width, with the tip of the cutter facing outward and bending toward the rear of the operation, and the interval is about 30 cm; A synchronous small wheel (7) is arranged under the cutter top pulley (5) to drive a synchronous large wheel (7A) with a synchronous belt. A belt pulley is arranged above the synchronous large wheel (7A) to drive a main wheel (6) for removing the grains. A tensioning wheel (38) is arranged on the top belt of the grain removing machine to bend the top belt of the grain removing machine so that each wheel of the grain removing machine is subjected to force. The device for removing the grains is a device for removing the grains, the shaft of the main wheel (6) on the top of the grain removing device extends downward; the plastic grain removing bucket (6A) is an irregular triangular bucket, the bottom of the bucket is connected and fixed to the bottom of the top bracket, and the bucket mouth is downward; the front is a grain dividing tip (35), one side is smooth and extends to the bottom of the grain removing belt (12), and the other side is shorter to allow the grain removing belt (12) to be exposed, and the grain removing bracket (6B) is installed on this side and fixed on the bucket mouth; the length of the back side is basically the same as this side; the presser foot telescopic device (34) is fixed on The plowing frame (6B) is mounted on the plowing frame (6B); the axis of the plowing top main wheel (6) passes through the plowing barrel (6A) downwardly; the plowing main belt wheel (9) is connected to the rear of the plowing frame (6B); the plowing belt tensioning wheel (11) is also installed in the front of the plowing frame (6B); the plowing belt (12) is mounted on the two wheels; the plowing belt (12) has whiskers like a rubber broom, which are about 5 cm long and arranged in rows like toothbrush bristles, which are harder than toothbrush bristles, and the interval between rows is about 5 cm; The synchronous large wheel (7A) drives the grain grabbing shaft (8) in the same body; the grain grabbing shaft (8) is provided with a main wheel (10) for the grain grabbing belt, and a tensioning wheel (10A) for the grain grabbing belt on the other side in front, and the grain grabbing belt (10B) is sleeved on these two wheels; the width of the grain grabbing belt (10B) is about 6 cm, and the same grain grabbing nails are arranged on both sides, and the grain grabbing nails are about 4 cm high and about 5 cm apart, and the grain grabbing nails catch the grain ear rods (36) sent by the grain pulling belt (12), and the outside is provided with a presser foot (33) to control; the grain ear rods are smoothly pressed in each grain pulling barrel (6A) The ear of grain rod channel (41) formed by the rear and smooth aluminum alloy wall plate of the next rice-pulling belt (12) is on the back of the tail of the presser foot (33), and the part of the rice-grabbing nail higher than the back of the presser foot grabs it and enters the opposite side of the back of the next presser foot and is taken away; because it is between the two rice-grabbing nails, the ear of grain rod comes to the final position of the rice-grabbing shaft (8) under the operation of the rice-grabbing belt (10B), at this time all the ear of grain rods are still upward, and the weight of the ear of grain will bend downward; the rice-grabbing shaft (8) The grain grabbing accelerating wheel (8A) on the main wheel (10) of the grain grabbing belt is 1.6 times the diameter of the main wheel (10) of the grain grabbing belt. The grain grabbing nails of the grain grabbing accelerating wheel (8A) rotate about 1.6 times faster than the grain grabbing nails on the grain grabbing belt (10B) that turns 180 degrees on the main wheel (10) of the grain grabbing belt. The grain grabbing accelerating wheel (8A) rotates 360 degrees without a belt. Only the grain grabbing nails grab the grain ear part. The weight of the grain ear is greater than the weight of the ear stalk, which generates centrifugal force, and the grain ear part falls to the grain conveying belt (16) first; the grain ear stalk falls to (37); At this time, the ear stalks (36) have not completely escaped from the constraints of the grabbing nails on the grabbing belt (10B), so the ears of grain first lie on the conveying belt (16) and enter the threshing gate (31A). A small number of ear stalks have not fallen down. As the grabbing nails of the grabbing accelerating wheel (8A) retreat from the grabbing nail holes provided on the grabbing accelerating wheel baffle (8B), all the ear stalks will be blocked by the grabbing accelerating wheel baffle (8B) and fall down and lie on the conveying belt (16); enter the threshing gate (31A); the conveying belt (16) is transported from low to high; The main transmission pulley (3A) drives the transition belt large wheel (13), and the transition belt large wheel (13) is coaxially provided with a large gear (13A) and a transition belt small wheel (14); the large gear drives the small gear (15) and the coaxial grain conveying belt wheel (15A), the grain conveying belt tightening wheel (15B), and the grain conveying belt (16); the large gear drives the small gear to change the reverse rotation into the forward rotation and the speed of the grain conveying belt (16) is accelerated; the bristles on the grain conveying belt (16) move quickly to the threshing gate (31A) in rows, and the grain conveying belt (16) drags in the grain ear stalks and also drags the grains flying out back; there are grain protection plates on both sides of the grain conveying belt (16), and all the grains can only enter the grain outlet screen (28), pass through the grain outlet (26), and enter the pocket; the threshing nails (2B) in the threshing compartment pick up the grain ear stalks from the grain conveying belt (16) to enter the threshing operation.

2. The small automatic harvester according to claim 1, characterized in that: The machine comprises a housing, a threshing door (31A), a grain discharging screen (28), a grain discharging port (26), a grass discharging device (29), a door (27) that can be opened for discharging grain, and an operating handle (30), and a machine cover (31). A threaded grain discharging knife (32) is arranged in the machine cover (31). The threaded grain discharging knife (32) has a relatively large thread slope at the top of the threshing door (31A), and the threaded threads of the other sections are relatively small and consistent. Grains pass through the grain discharging screen (28) to the grain discharging port (26) and enter a bag. The machine operator holds the operating handle (30) and follows the machine. When a person stands on the walking boat (22) close to the position where the person stands in the threshing box, the machine becomes half-fed; the threshing box is equipped with a duck-foot cloth to prevent the grains from splashing; there is a protruding part at the back of the walking boat (22) for accommodating a bag connected to the outlet (26); the belt of the flat main pulley (4) is removed to disengage the automatic harvesting part in front, leaving the walking part in the driving state, loosening the clutch device (25) or turning off the engine, loosening the integrated fastening screw of the transmission main pulley (3A), and starting the machine to let it move to another pile.

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