CN115176592B - Green Chinese onion seed combine harvester - Google Patents
Green Chinese onion seed combine harvester Download PDFInfo
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- CN115176592B CN115176592B CN202211005334.9A CN202211005334A CN115176592B CN 115176592 B CN115176592 B CN 115176592B CN 202211005334 A CN202211005334 A CN 202211005334A CN 115176592 B CN115176592 B CN 115176592B
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- harvesting head
- green chinese
- chinese onion
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- 244000295724 Allium chinense Species 0.000 title claims abstract description 94
- 235000016790 Allium chinense Nutrition 0.000 title claims abstract description 94
- 238000003306 harvesting Methods 0.000 claims abstract description 124
- 238000004898 kneading Methods 0.000 claims abstract description 35
- 210000003128 head Anatomy 0.000 claims description 123
- 230000001360 synchronised effect Effects 0.000 claims description 89
- 238000000926 separation method Methods 0.000 claims description 60
- 238000007599 discharging Methods 0.000 claims description 48
- 239000003638 chemical reducing agent Substances 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 210000004761 scalp Anatomy 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 241000234282 Allium Species 0.000 abstract description 12
- 235000002732 Allium cepa var. cepa Nutrition 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010198 maturation time Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D45/00—Harvesting of standing crops
- A01D45/30—Harvesting of standing crops of grass-seeds or like seeds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
Abstract
A green Chinese onion seed combine harvester comprises a frame assembly, a power device, a harvesting head, a cyclone separator and a negative pressure conveying pipe; wherein the harvesting head has a kneading function on the onion bulb inflorescences, so that mature onion seeds fall off from the onion bulb inflorescences; the fallen green Chinese onion seeds and seed coats enter the cyclone separator through the negative pressure conveying pipe, the green Chinese onion seeds and seed coats rotate along the inner wall of the cyclone separating cylinder, the green Chinese onion seeds fall down along the inner wall of the cyclone separating cylinder due to small surface area to weight ratio, the seed coats rise along the inner wall of the cyclone separating cylinder due to large surface area to weight ratio, and finally are discharged from an air outlet of the cyclone separator, so that the harvesting and impurity removal of the green Chinese onion seeds are completed once; the green Chinese onion seed combine harvester has the advantages of high harvesting efficiency and recovery ratio of the green Chinese onion seeds, less manual requirement, low labor intensity, no need of a subsequent seed taking and impurity removing process and the like, thereby greatly reducing the harvesting cost of the green Chinese onion seeds and improving the economic benefit of green Chinese onion seed production enterprises.
Description
Technical Field
The invention relates to the technical field of mechanical harvesting equipment of green Chinese onion seeds, in particular to a green Chinese onion seed combine harvester.
Background
The green Chinese onion is one of important vegetable crops in China, and has large demand and wide planting area, so the demand for the green Chinese onion seeds is very large; in order to ensure the quality of the green Chinese onion seeds, the green Chinese onion seeds need to be harvested after the green Chinese onion seeds are ripe, and the green Chinese onion seeds are small and light and easily fall off from the spherical inflorescences after the green Chinese onion seeds are ripe, so that the recovery ratio of the seeds is extremely low when the green Chinese onion seeds are harvested by utilizing the harvesting principle of the existing agricultural harvesting machine, and the traditional manual operation method still has to be adopted at present for harvesting the green Chinese onion seeds; the green Chinese onion seeds are concentrated in maturation time, and the effective harvesting time is very short, so that a large amount of green Chinese onion flowers with spherical inflorescences are manually picked one by one in the harvesting period, and the labor intensity and the harvesting cost are high; meanwhile, the picked chopped green onion is subjected to the procedures of natural airing, seed knocking-off, impurity removal and the like for picking the seeds, so that the harvesting cost of the green onion seeds is high, and the economic benefit of green onion seed production enterprises is influenced.
Disclosure of Invention
In order to overcome the defects in the background technology, the invention discloses a green Chinese onion seed combine harvester which comprises a frame assembly, a power device, a harvesting head, a cyclone separator and a negative pressure conveying pipe, wherein the frame assembly is arranged on the frame assembly; wherein the harvesting head has a kneading function on the onion bulb inflorescences, so that mature onion seeds fall off from the onion bulb inflorescences; the fallen green Chinese onion seeds and seed coats enter the cyclone separator through the negative pressure conveying pipe, the green Chinese onion seeds and seed coats in the cyclone separator rotate along the inner wall of the cyclone separation cylinder, the green Chinese onion seeds fall down along the inner wall of the cyclone separation cylinder due to small surface area weight ratio to be collected, the seed coats rise along the inner wall of the cyclone separation cylinder due to large surface area weight ratio to be discharged from an air outlet of the cyclone separator finally, and accordingly harvesting and impurity removal of the green Chinese onion seeds are completed once.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: a green Chinese onion seed combine harvester comprises a frame assembly, a power device, a harvesting head, a cyclone separator and a negative pressure conveying pipe; the rack assembly comprises a rack, travelling wheels are rotatably arranged on two sides of the rack, a material receiving box is arranged on the upper part of the rack, a handrail is arranged at one end of the rack, and auxiliary wheels are rotatably arranged on the lower part of the handrail; the power device and the cyclone separator are fixedly arranged at the upper part of the frame assembly, a discharge hole at the bottom of the cyclone separator is positioned above the material receiving box, the harvesting head is fixedly arranged at the side edge of the frame assembly, and the harvesting head is connected with the cyclone separator through a negative pressure conveying pipe to generate negative pressure in the harvesting head;
the power device comprises a motor, the motor is connected with a speed reducer in a driving way, the speed reducer is provided with a speed reducer output chain wheel for outputting power and a speed reducer output belt pulley, the speed reducer output chain wheel drives the travelling wheel to rotate and walk through a chain, and the speed reducer output belt pulley drives the harvesting head to operate through a belt.
Further, the harvesting head comprises a harvesting head shell and a kneading harvesting head combination arranged in the harvesting head shell, a feed chute and a discharge chute are arranged on the front side and the rear side of the harvesting head shell, and a discharge hole is arranged on the upper part of the harvesting head shell; the rubbing harvesting head combination comprises a left rubbing head combination and a right rubbing head combination which are arranged in parallel, a left synchronous brush belt is rotationally arranged on the left rubbing head combination, a right synchronous brush belt is rotationally arranged on the right rubbing head combination, and bristle brushes and soft brushes are respectively arranged on the outer peripheral surfaces of the left synchronous brush belt and the right synchronous brush belt at intervals, and the lengths of the bristle brushes are longer than those of the soft brushes; when the harvesting head works, the bristle brushes on the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt are staggered and correspond to each other, and synchronously move upwards; in the process of harvesting the green Chinese onion seeds, the spherical inflorescences enter between the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt, the spherical inflorescences of the green Chinese onion are clamped by the bristle brushes and the soft hair brushes which are in staggered correspondence with the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt, when the left synchronous brush belt and the right synchronous brush belt synchronously move upwards, the spherical inflorescences of the green Chinese onion keep unchanged in original height, namely the spherical inflorescences of the green Chinese onion do not move upwards synchronously along with the left synchronous brush belt and the right synchronous brush belt, so that the spherical inflorescences of the green Chinese onion are repeatedly pushed back and forth to the corresponding short soft hair brushes by the long bristle brushes on the left synchronous brush belt and the right synchronous brush belt, thereby forming a kneading effect on the spherical inflorescences of the green Chinese onion, mature green Chinese onion seeds and seed coats fall off from the spherical inflorescences and are embedded in gaps of the bristle brushes and the soft hair brushes, move upwards along with the bristle brushes and the soft hair brushes, are conveyed to the upper part of a harvesting head shell, and then under the action of negative pressure airflow in the harvesting head, and the soft hair brush gaps and seed skin are conveyed into the cyclone separator.
Further, the left rubbing head combination comprises a left driving tooth-shaped shaft, a left driven tooth-shaped shaft, a left synchronous brush belt, a driving gear and a harvesting scalp belt wheel; the left driving toothed shaft and the left driven toothed shaft are rotationally connected with the harvesting head shell, the driving gear and the harvesting scalp belt wheel are fixedly connected with the circumferential surface of the left driving toothed shaft, which is positioned at the outer side of the harvesting head shell, and the harvesting scalp belt wheel is in transmission connection with the speed reducer output belt wheel through a belt; the left synchronous brush belt is wrapped on the circumferential surface of the inner side of the left driving toothed shaft and the left driven toothed shaft harvesting head shell;
the right kneading head combination comprises a right driving tooth-shaped shaft, a right driven tooth-shaped shaft, a right synchronous brush belt and a driven gear; the right driving tooth-shaped shaft and the right driven tooth-shaped shaft are rotationally connected with the harvesting head shell, the driven gear is fixedly connected with the circumferential surface of the right driving tooth-shaped shaft, which is positioned at the outer side of the harvesting head shell, and the driven gear is meshed with the driving gear; the right synchronous brush belt is wrapped on the right driving tooth-shaped shaft and the right driven tooth-shaped shaft which are positioned on the circumferential surface of the inner side of the harvesting head shell;
the bristle brushes and the soft brushes on the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt are staggered and correspond to each other.
Further, the bristle brushes and the soft brushes on the outer surfaces of the left synchronous brush belt and the right synchronous brush belt are provided with chamfers corresponding to the feed inlet sides, and the chamfers form a feed inlet of the kneading harvesting head; the harvesting head feed inlet is arranged so that the spherical inflorescences of the green Chinese onion can conveniently enter between the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt.
Preferably, the left kneading head combination further comprises a left feeding hole upper shaft and a left feeding hole lower shaft, and the left feeding hole upper shaft and the left feeding hole lower shaft are rotationally connected with the harvesting head shell; the upper shaft of the left feed inlet and the axis of the left driving toothed shaft are positioned in the same horizontal plane and are provided with an included angle; the lower shaft of the left feed inlet and the axis of the left driven toothed shaft are positioned in the same horizontal plane and are provided with an included angle; the left synchronous brush belt is wrapped on the inner side of the left driving toothed shaft, the upper shaft of the left feeding port, the inner side of the left driven toothed shaft and the circumferential surface of the lower shaft of the left feeding port;
the right kneading head combination also comprises a right feeding port upper shaft and a right feeding port lower shaft, and the right feeding port upper shaft and the right feeding port lower shaft are rotationally connected with the harvesting head shell; the axis of the upper shaft of the right feeding port and the axis of the right driving toothed shaft are positioned in the same horizontal plane and are provided with an included angle; the lower shaft of the right feed inlet and the axis of the right driven toothed shaft are positioned in the same horizontal plane and are provided with an included angle; the right synchronous brush belt is wrapped on the inner side of the right driving toothed shaft, the upper shaft of the right feeding port, the inner side of the right driven toothed shaft and the circumferential surface of the lower shaft of the right feeding port;
the left synchronous brush belt and the right synchronous brush belt form a kneading harvester feed inlet under the action of a left feed inlet upper shaft, a left feed inlet lower shaft and a right feed inlet upper shaft and a right feed inlet lower shaft; the left feeding hole upper shaft, the left feeding hole lower shaft, the right feeding hole upper shaft and the right feeding hole lower shaft are used for forming the kneading harvester feeding hole, and the opening size is larger, so that the spherical inflorescences of the green Chinese onion can enter between the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt, and the problem of low seed recovery efficiency caused by difficulty in entering between the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt due to the spherical inflorescences of the green Chinese onion is solved.
Further, the grain dividing plates are arranged on two sides of the feeding groove of the harvesting head shell, gather the scattered green Chinese onion stems, and are more beneficial to the entering of the green Chinese onion spherical inflorescences into the adjacent surfaces of the left synchronous brush belt and the right synchronous brush belt.
Further, the cyclone separator comprises a cyclone separating cylinder, a centrifugal fan, an air inlet pipe and a separating cylinder discharging door; the centrifugal fan is fixedly arranged at the upper part of the cyclone separation cylinder, the air inlet pipe is tangentially communicated with the upper side of the cyclone separation cylinder, and the air inlet pipe is connected with a discharge hole of the harvesting head shell through a negative pressure conveying pipe; when the centrifugal fan works, air in the cyclone separation cylinder is discharged from an air outlet of the centrifugal fan, and negative pressure is formed in the cyclone separation cylinder; negative pressure in the cyclone separating cylinder forms negative pressure air flow in the harvesting head shell through the air inlet pipe and the negative pressure conveying pipe; under the action of negative pressure air flow in the harvesting head shell, the green Chinese onion seeds and the seed coats enter the cyclone separation barrel tangentially through a negative pressure conveying pipe and an air inlet pipe, and form rotary air flow in the cyclone separation barrel, the negative pressure in the cyclone separation barrel is lower than the negative pressure in the harvesting head shell because the space in the cyclone separation barrel is suddenly enlarged compared with the air inlet pipe, meanwhile, the green Chinese onion seeds are collected by rotating and falling along the inner wall of the cyclone separation barrel because the surface area weight ratio is small, the seed coat surface area weight ratio is large, the seeds are rotated and lifted along the inner wall of the cyclone separation barrel, and finally are discharged from an air outlet of the cyclone separator, so that the separation of the green Chinese onion seeds and the seed coats is realized; the separating cylinder discharging door is hinged to the lower part of the cyclone separating cylinder, is also connected with the cyclone separating cylinder through an electric telescopic rod, and is also provided with a weighing sensor at the upper side; in the process of harvesting the green Chinese onion seeds by the green Chinese onion seed combine harvester, the separating cylinder discharging door is controlled to be in a closed state by an electric telescopic rod, along with the increase of the harvested green Chinese onion seeds, the gravity acting on the weighing sensor is synchronously increased, when the weight of the green Chinese onion seeds in the cyclone separating cylinder is applied to the weighing sensor to reach a set value, the weighing sensor sends a signal, the electric telescopic rod acts, and the separating cylinder discharging door is opened, so that the green Chinese onion seeds in the cyclone separating cylinder fall into a receiving box below; when the cyclone separating cylinder finishes discharging, the electric telescopic rod acts reversely to close the separating cylinder discharging door.
Preferably, the cyclone separator comprises a cyclone separating cylinder, a centrifugal fan, an air inlet pipe and a separating cylinder discharging door; the centrifugal fan is fixedly arranged at the upper part of the cyclone separation cylinder, the air inlet pipe is tangentially communicated with the upper side of the cyclone separation cylinder, and the air inlet pipe is connected with a discharge hole of the harvesting head shell through a negative pressure conveying pipe; the separating cylinder discharging door is hinged to the lower part of the cyclone separating cylinder, and a discharging door limiting block is arranged at the hinged joint of the separating cylinder discharging door and the cyclone separating cylinder; a magnet is fixedly arranged at the lower part of the separating cylinder discharging door; a conveying pipe air door is rotationally arranged in the negative pressure conveying pipe, an air door control board fixedly connected with the conveying pipe air door is arranged outside the negative pressure conveying pipe, and an air door return spring and an air door control steel wire rope are arranged on the air door control board; in the process of harvesting the green Chinese onion seeds by the green Chinese onion seed combine harvester, the separating cylinder discharging door is in a closed state through the mutual attraction of the magnets, the gravity acting on the separating cylinder discharging door is larger and larger along with the increase of the harvested green Chinese onion seeds, and when the gravity acting on the separating cylinder discharging door is enough to overcome the attraction of the magnets, the separating cylinder discharging door is automatically opened, so that the green Chinese onion seeds in the cyclone separating cylinder fall into a receiving box below; however, when the separating cylinder discharging door is opened, the opening angle of the separating cylinder discharging door is limited due to the limitation of the discharging door limiting block and is not completely in a vertical opening state, so that the separating cylinder discharging door is favorably closed under the action of negative pressure; when the cyclone separation cylinder finishes discharging, the air door control steel wire rope is pulled by hand, so that the air door control plate drives the conveying pipe air door to rotate, the negative pressure conveying pipe is closed, at the moment, negative pressure is generated at the lower part of the cyclone separation cylinder, the separation cylinder discharging door automatically rotates upwards under the action of the negative pressure at the lower part of the cyclone separation cylinder, and the separation cylinder discharging door is closed through the mutual attraction of the magnets; after the separating cylinder discharging door is closed, the air door control steel wire rope is loosened, and the air door control plate enables the air door of the conveying pipe to be opened again under the action of the tension of the air door reset spring.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses a green Chinese onion seed combine harvester which comprises a frame assembly, a power device, a harvesting head, a cyclone separator and a negative pressure conveying pipe, wherein the frame assembly is connected with the power device; wherein the harvesting head has a kneading function on the onion bulb inflorescences, so that mature onion seeds fall off from the onion bulb inflorescences; the fallen green Chinese onion seeds and seed coats enter a cyclone separator through a negative pressure conveying pipe, the green Chinese onion seeds and seed coats rotate along the inner wall of a cyclone separation cylinder in the cyclone separator, the green Chinese onion seeds are collected by rotating and falling along the inner wall of the cyclone separation cylinder due to small surface area weight ratio, the seed coats are rotated and rising along the inner wall of the cyclone separation cylinder due to large surface area weight ratio, and finally are discharged from an air outlet of the cyclone separator, so that the harvesting and impurity removal of the green Chinese onion seeds are completed once; the green Chinese onion seed combine harvester has the advantages of high harvesting efficiency and recovery ratio, less labor requirement, low labor intensity, no need of subsequent seed taking and impurity removing processes and the like, thereby greatly reducing the harvesting cost of the green Chinese onion seeds and improving the economic benefit of green Chinese onion seed production enterprises.
Drawings
FIG. 1 is a schematic view showing the appearance of a green Chinese onion seed combine harvester in accordance with the first embodiment;
FIG. 2 is a schematic view showing a green Chinese onion seed combine harvester according to a second embodiment;
FIG. 3 is a schematic diagram of the appearance of a rack assembly;
FIG. 4 is a second schematic view of the rack assembly;
FIG. 5 is a schematic view of the power plant;
FIG. 6 is a schematic view of the front view of the harvesting head according to the first embodiment;
fig. 7 is a schematic view showing the appearance of a kneading harvester according to the first embodiment;
fig. 8 is a schematic diagram of a left kneading head assembly structure according to the first embodiment;
fig. 9 is a schematic view of a right kneading head assembly structure according to the first embodiment;
FIG. 10 is a schematic view of a left synchronous brush belt according to the first embodiment;
fig. 11 is a top view of a kneading harvester according to the first embodiment;
FIG. 12 is a rear view of the appearance of the harvesting head according to the first embodiment;
FIG. 13 is a schematic view showing the appearance of a cyclone separator according to the first embodiment;
fig. 14 is an enlarged schematic view of a part a structure of a discharge gate of a separation barrel according to the first embodiment;
FIG. 15 is a schematic view showing the appearance of a green Chinese onion seed combine harvester in accordance with the second embodiment;
FIG. 16 is a front view of the appearance of a second embodiment of a harvester;
fig. 17 is a schematic view showing the appearance of a kneading harvester according to the second embodiment;
fig. 18 is a schematic diagram of an exploded view of a left kneading head assembly according to the second embodiment;
fig. 19 is a schematic view of an exploded construction of a right kneading head assembly according to the second embodiment;
FIG. 20 is a schematic view of a left synchronous brush belt according to the second embodiment;
fig. 21 is a top view of a kneading harvester according to the second embodiment;
FIG. 22 is a rear view of the appearance of the harvesting head of the second embodiment;
FIG. 23 is an enlarged schematic view of a part B of a discharge gate of a separating drum according to the second embodiment;
fig. 24 is a schematic diagram of a duct damper control structure according to the second embodiment.
In the figure: 1. a frame assembly; 1.1, a frame; 1.2, travelling wheels; 1.3, a material receiving box; 1.4, armrests; 1.5, auxiliary wheels; 2. a power device; 2.1, a motor; 2.2, a speed reducer; 2.2.1, a reducer output sprocket; 2.2.2, a reducer output pulley; 3. harvesting heads; 3.1, harvesting head housing; 3.1.1, a seedling dividing plate; 3.2, rubbing the harvesting head combination; 3.2.1, left rubbing head combination; 3.2.1.1, left driving toothed shaft; 3.2.1.2, left passive toothed shaft; 3.2.1.3, left synchronous brush belt; 3.2.1.3.1, synchronous toothed belt; 3.2.1.3.2, bristle brushes; 3.2.1.3.3, a soft brush; 3.2.1.4, a driving gear; 3.2.1.5 harvesting scalp pulley; 3.2.1.6, left feed inlet upper shaft; 3.2.1.7, left feed inlet lower shaft; 3.2.2, right kneading head combination; 3.2.2.1, right driving toothed shaft; 3.2.2.2, right passive toothed shaft; 3.2.2.3, right synchronous brush belt; 3.2.2.4, a passive gear; 3.2.2.5, right feed inlet upper shaft; 3.2.2.6, a right feed inlet lower shaft; 3.3, kneading a feed inlet of the harvesting head; 4. a cyclone separator; 4.1, a cyclone separating cylinder; 4.2, a centrifugal fan; 4.3, an air inlet pipe; 4.4, a separating cylinder discharging door; 4.4.1, electric telescopic rod; 4.4.2, a weighing sensor; 4.4.3, magnets; 4.4.4, a discharge gate threshold block; 5. a negative pressure delivery pipe; 5.1, a conveying pipe air door; 5.1.1, air door control panel; 5.1.2, air door reset spring; 5.1.3, throttle control wire rope.
Detailed Description
The invention will be explained in more detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the invention.
Embodiment one:
a green Chinese onion seed combine harvester comprises a frame assembly 1, a power device 2, a harvesting head 3, a cyclone separator 4 and a negative pressure conveying pipe 5, and is specifically shown in figures 1 and 2 of the specification;
see fig. 3, 4 of the description: the frame assembly 1 comprises a rectangular frame 1.1 formed by welding angle steel, travelling wheels 1.2 are arranged on two sides of the frame 1.1, the travelling wheels 1.2 are rotatably connected with the frame 1.1 through a rotating shaft, and a chain wheel is fixedly arranged on the rotating shaft; the upper part of the frame 1.1 is provided with a material receiving box 1.3, a material guiding plate is obliquely arranged in the material receiving box 1.3, and the material guiding plate and the outer wall of the material receiving box 1.3 form a closed space for setting a power supply and other electrical control equipment; one end of the frame 1.1 is provided with a handrail 1.4, the lower part of the handrail 1.4 is rotatably provided with an auxiliary wheel 1.5, and the linear walking or steering of the green Chinese onion seed combine harvester is controlled by the handrail 1.4;
see fig. 5 of the specification: the power device 2 is fixedly arranged in the middle of the upper part of the frame assembly 1; the power device 2 comprises a motor 2.1, the motor 2.1 is in driving connection with a speed reducer 2.2, the speed reducer 2.2 is provided with a speed reducer output sprocket 2.2.1 for outputting power and a speed reducer output belt pulley 2.2.2, and the rotary motion of the motor 2.1 is output through the speed reducer output sprocket 2.2.1 and the speed reducer output belt pulley 2.2.2 after being decelerated by the speed reducer 2.2; wherein the output chain wheel 2.2.1 of the speed reducer is in transmission connection with the chain wheel of the travelling wheel rotating shaft through a chain, and the travelling wheel 1.2 is driven to rotate and walk; wherein the speed reducer output belt pulley 2.2.2 drives the harvesting head 3 to operate through a belt;
see fig. 13, 14 of the specification: the cyclone separator 4 is fixedly arranged at the upper part of the frame assembly 1 through a supporting frame; the cyclone separator 4 comprises a cyclone separating cylinder 4.1, a centrifugal fan 4.2, an air inlet pipe 4.3 and a separating cylinder discharging door 4.4; the centrifugal fan 4.2 is fixedly arranged at the upper part of the cyclone separation cylinder 4.1, the air inlet pipe 4.3 is tangentially connected to the upper side of the cyclone separation cylinder, the separation cylinder discharge door 4.4 is two semicircular flat plates and is hinged at the lower part of the cyclone separation cylinder 4.1 through a rotating shaft, the two separation cylinder discharge doors 4.4 are also connected with the cyclone separation cylinder 4.1 through an electric telescopic rod 4.4.1, one end of the electric telescopic rod 4.4.1 is hinged on the inner wall of the cyclone separation cylinder, the other end of the electric telescopic rod is hinged on the upper side of the separation cylinder discharge door 4.4, and the opening and the closing of the separation cylinder discharge door 4.4 are controlled through the telescopic of the electric telescopic rod 4.4.1; the upper side of the separating cylinder discharging door 4.4 is also provided with a weighing sensor 4.4.2 which is used for detecting the picking amount of the green Chinese onion seeds in the cyclone separating cylinder 4.1, when the picking amount reaches a set value, the weighing sensor 4.4.2 sends out a signal, and the electric telescopic rod 4.4.1 acts to open the separating cylinder discharging door 4.4 to drop the picked green Chinese onion seeds into the receiving box 1.3;
see fig. 6-12 of the specification: the harvesting head 3 is fixedly arranged on the side edge of the frame assembly 1 through a sliding rail bracket; the harvesting head 3 comprises a harvesting head shell 3.1 and a kneading harvesting head combination 3.2 arranged in the harvesting head shell 3.1, wherein a feed chute and a discharge chute are arranged on the front side and the rear side of the harvesting head shell 3.1, a grain dividing plate 3.1.1 is arranged on the two sides of the feed chute, a discharge hole is arranged on the upper part of the feed chute, and the discharge hole is connected to an air inlet pipe 4.3 of the cyclone separator 4 through a negative pressure conveying pipe 5; the rubbing harvesting head combination 3.2 comprises a left rubbing head combination 3.2.1 and a right rubbing head combination 3.2.2 which are arranged in parallel; the left rubbing head combination 3.2.1 comprises a left driving tooth-shaped shaft 3.2.1.1, a left driven tooth-shaped shaft 3.2.1.2, a left synchronous brush belt 3.2.1.3, a driving gear 3.2.1.4 and a harvesting scalp belt wheel 3.2.1.5; the left driving toothed shaft 3.2.1.1 and the left driven toothed shaft 3.2.1.2 are in rotary connection with the harvesting head shell 3.1 through a bearing seat and a bearing fixedly arranged on the harvesting head shell 3.1, the driving gear 3.2.1.4 and a harvesting scalp pulley 3.2.1.5 are fixedly connected with the outer end of the left driving toothed shaft 3.2.1.1 through a flat key, and the harvesting scalp pulley 3.2.1.5 is in transmission connection with a reducer output pulley 2.2.2 through a belt to drive the left driving toothed shaft 3.2.1.1 to rotate; the left synchronous brush belt 3.2.1.3 is wrapped on the circumferential surface of the left driving tooth-shaped shaft 3.2.1.1 and the left driven tooth-shaped shaft 3.2.1.2 positioned on the inner side of the head-obtaining shell 3.1;
the right kneading head combination 3.2.2 comprises a right driving tooth-shaped shaft 3.2.2.1, a right driven tooth-shaped shaft 3.2.2.2, a right synchronous brush belt 3.2.2.3 and a driven gear 3.2.2.4; the right driving tooth-shaped shaft 3.2.2.1 and the right driven tooth-shaped shaft 3.2.2.2 are in rotary connection with the harvesting head shell 3.1 through a bearing seat and a bearing fixedly arranged on the harvesting head shell 3.1, a driven gear 3.2.2.4 is fixedly connected with the peripheral surface of the outer side of the right driving tooth-shaped shaft 3.2.2.1, a driven gear 3.2.2.4 is in meshed connection with the driving gear 3.2.1.4, and the driven gear 3.2.2.4 is driven to rotate by the driving gear 3.2.1.4; the right synchronous brush belt 3.2.2.3 is wrapped on the circumference surface of the right driving tooth-shaped shaft 3.2.2.1 and the right driven tooth-shaped shaft 3.2.2.2 positioned on the inner side of the head-obtaining shell 3.1;
the outer peripheral surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 are respectively provided with a bristle brush 3.2.1.3.2 and a soft bristle brush 3.2.1.3.3 at intervals, and the length of the bristle brush 3.2.1.3.2 is longer than that of the soft bristle brush 3.2.1.3.3; when the harvesting head 3 works, the bristle brushes 3.2.1.3.2 and the soft brushes 3.2.1.3.3 on adjacent surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 are in staggered correspondence, and synchronously move upwards under the drive of the left driving toothed shaft 3.2.1.1 and the right driving toothed shaft 3.2.2.1; in addition, the bristle brushes 3.2.1.3.2 and the soft brush 3.2.1.3.3 on the peripheral surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 are provided with chamfers corresponding to the feed inlet side, and the chamfers form a kneading harvest head feed inlet 3.3;
the supplementary explanation is: the left driving tooth-shaped shaft 3.2.1.1, the left driven tooth-shaped shaft 3.2.1.2, the right driving tooth-shaped shaft 3.2.2.1 and the right driven tooth-shaped shaft 3.2.2.2 are respectively provided with synchronous teeth on the circumferential surface of the inner side of the harvester shell 3.1, and the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 are synchronous tooth-shaped belts, so that when the harvester 3 works, the bristle brushes 3.2.1.3.2 and the soft brush 3.2.1.3.3 on the adjacent surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 are always staggered and correspond to each other and synchronously move upwards; meanwhile, in order to prevent the axial movement of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 from occurring in the working process of the harvesting head 3, the left driving tooth-shaped shaft 3.2.1.1, the left driven tooth-shaped shaft 3.2.1.2, the right driving tooth-shaped shaft 3.2.2.1 and the right driven tooth-shaped shaft 3.2.2.2 are positioned at the inner side of the harvesting head shell 3.1 and provided with anti-movement flanges.
Embodiment two:
see fig. 16-22 of the specification: the left kneading head combination 3.2.1 also comprises a left feed port upper shaft 3.2.1.6, a left feed port lower shaft 3.2.1.7, the left feed port upper shaft 3.2.1.6 and the left feed port lower shaft 3.2.1.7 are in rotary connection with the harvesting head shell 3.1 through a bearing seat and a bearing fixedly arranged on the harvesting head shell 3.1; the upper shaft 3.2.1.6 of the left feed inlet and the axis of the left driving toothed shaft 3.2.1.1 are positioned in the same horizontal plane and are provided with an included angle; the lower shaft 3.2.1.7 of the left feed inlet and the axis of the left passive tooth-shaped shaft 3.2.1.2 are positioned in the same horizontal plane and are provided with an included angle; the left synchronous brush belt 3.2.1.3 is wrapped on the inner side of the left driving toothed shaft 3.2.1.1, the left feeding port upper shaft 3.2.1.6 and the left driven toothed shaft 3.2.1.2, and the left feeding port lower shaft 3.2.1.7;
the right kneading head combination 3.2.2 also comprises a right feed port upper shaft 3.2.2.5 and a right feed port lower shaft 3.2.2.6, wherein the right feed port upper shaft 3.2.2.5 and the right feed port lower shaft 3.2.2.6 are in rotary connection with the harvesting head housing 3.1 through bearing blocks and bearings fixedly arranged on the harvesting head housing 3.1; the upper shaft 3.2.2.5 of the right feed inlet and the axis of the right driving toothed shaft 3.2.2.1 are positioned in the same horizontal plane and are provided with an included angle; the axis of the right feed inlet lower shaft 3.2.2.6 and the axis of the right passive tooth-shaped shaft 3.2.2.2 are positioned in the same horizontal plane and are provided with an included angle; the right synchronous brush belt 3.2.2.3 is wrapped on the inner side of the right driving toothed shaft 3.2.2.1, the upper right feed port shaft 3.2.2.5 and the inner side of the right driven toothed shaft 3.2.2.2 and the circumferential surface of the lower right feed port shaft 3.2.2.6;
the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3 form a rubbing harvester feed inlet 3.3 under the action of a left feed inlet upper shaft 3.2.1.6, a left feed inlet lower shaft 3.2.1.7, a right feed inlet upper shaft 3.2.2.5 and a right feed inlet lower shaft 3.2.2.6.
Example III
See fig. 15, 23 of the specification: a discharge gate threshold block 4.4.4 is arranged at the hinged joint of the separation cylinder discharge gate 4.4 and the cyclone separation cylinder 4.1, and a magnet 4.4.3 is fixedly arranged at the lower part of the separation cylinder discharge gate 4.4; see fig. 15, 24 of the specification: the negative pressure conveying pipe 5 is rotationally provided with a conveying pipe air door 5.1, the outside of the negative pressure conveying pipe 5 is provided with an air door control board 5.1.1 fixedly connected with the conveying pipe air door 5.1, and the air door control board 5.1.1 is provided with an air door reset spring 5.1.2 and an air door control steel wire rope 5.1.3.
The working principle of the green Chinese onion seed combine harvester of the invention is as follows: in the process of harvesting the green Chinese onion seeds, the spherical inflorescences enter between adjacent surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3, the spherical inflorescences of the green Chinese onion are clamped by the bristle brushes 3.2.1.3.2 and the soft brush 3.2.1.3.3 corresponding to the adjacent surfaces of the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3, when the spherical inflorescences of the green Chinese onion synchronously move upwards, the original height of the spherical inflorescences of the green Chinese onion is kept unchanged, namely the spherical inflorescences of the green Chinese onion do not synchronously move upwards along with the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3, therefore, the spherical inflorescences of the green Chinese onions are repeatedly pushed back and forth to the corresponding shorter soft brush 3.2.1.3.3 by the longer bristle brush 3.2.1.3.2 on the left synchronous brush belt 3.2.1.3 and the right synchronous brush belt 3.2.2.3, so that the kneading action on the spherical inflorescences of the green Chinese onions is formed, under the repeated kneading action, mature green Chinese onion seeds and seed coats fall off from the spherical inflorescences, are embedded in gaps of the bristle brush 3.2.1.3.2 and the soft brush 3.2.1.3.3, are upwards conveyed to the upper part of the harvesting head shell 3.1 along with the bristle brush 3.2.1.3.2 and the soft brush 3.2.1.3.3, and then under the action of negative pressure air flow in the harvesting head shell 3.1, the green Chinese onion seeds and seed coats embedded in gaps of the bristle brush 3.2.1.3.2 and the soft brush 3.2.1.3.3 enter the cyclone separation cylinder 4.1 through the negative pressure conveying pipe 5; the green Chinese onion seeds and the seed coats in the cyclone separation barrel 4.1 rotate along the inner wall of the cyclone separation barrel 4.1, the green Chinese onion seeds fall down along the inner wall of the cyclone separation barrel 4.1 due to small surface area weight ratio and are collected, the seed coats rise along the inner wall of the cyclone separation barrel 4.1 due to large surface area weight ratio and are finally discharged from an air outlet of the cyclone separation barrel 4.1, and therefore separation of the green Chinese onion seeds and the seed coats is achieved.
In the first embodiment, the method for controlling the discharge of the cyclone 4 is as follows: with the increase of the harvesting of the green Chinese onion seeds, the gravity acting on the weighing sensor 4.4.2 is synchronously increased, when the gravity of the weight of the green Chinese onion seeds in the cyclone separation barrel 4.1 applied to the weighing sensor 4.4.2 reaches a set value, the weighing sensor 4.4.2 sends out a signal, the electric telescopic rod 4.4.1 acts, and the separation barrel discharging door 4.4 is opened, so that the green Chinese onion seeds in the cyclone separation barrel 4.1 fall into the receiving box 1.3 below; when the cyclone separating cylinder 4.1 finishes discharging, the electric telescopic rod 4.4.1 acts reversely to close the separating cylinder discharging door 4.4.
In the third embodiment, the method for controlling the discharge of the cyclone 4 is as follows: as the harvesting of the green Chinese onion seeds increases, the gravity acting on the separating cylinder discharging door 4.4 is larger and larger, and when the gravity acting on the separating cylinder discharging door 4.4 is enough to overcome the attraction of the magnet 4.4.3, the separating cylinder discharging door 4.4 is automatically opened, so that the green Chinese onion seeds in the cyclone separating cylinder 4.1 fall into the receiving box 1.3 below; however, when the separating cylinder discharging door 4.4 is opened, the opening angle of the separating cylinder discharging door 4.4 is limited due to the limitation of the discharging cylinder opening block 4.4.4, and the separating cylinder discharging door is not completely in a vertical opening state; when the cyclone separation cylinder 4.1 finishes discharging, the air door control steel wire rope 5.1.3 is pulled by hand, the air door control plate 5.1.1 drives the conveying pipe air door 5.1 to rotate, the negative pressure conveying pipe 5 is closed, at the moment, negative pressure is generated at the lower part of the cyclone separation cylinder 4.1, the separation cylinder discharging door 4.4 automatically rotates upwards under the action of the negative pressure at the lower part of the cyclone separation cylinder 4.1, and the separation cylinder discharging door 4.4 is closed through the mutual attraction of the magnets 4.4.3; after the separating cylinder discharging door 4.4 is closed, the air door control steel wire rope 5.1.3 is loosened, and the air door control plate 5.1.1 enables the conveying pipe air door 5.1 to be opened again under the tensile force of the air door reset spring 5.1.2.
The invention is not described in detail in the prior art.
Claims (7)
1. A green Chinese onion seed combine harvester is characterized in that: comprises a frame assembly (1), a power device (2), a harvesting head (3), a cyclone separator (4) and a negative pressure conveying pipe (5); the rack assembly (1) comprises a rack (1.1), travelling wheels (1.2) are rotatably arranged on two sides of the rack (1.1), a material receiving box (1.3) is arranged on the upper portion of the rack (1.1), a handrail (1.4) is arranged at one end of the rack (1.1), and auxiliary wheels (1.5) are rotatably arranged on the lower portion of the handrail (1.4); the power device (2) and the cyclone separator (4) are fixedly arranged at the upper part of the frame assembly (1), and a discharge hole at the bottom of the cyclone separator (4) is positioned above the material receiving box (1.3); the harvesting head (3) is fixedly arranged at the side edge of the frame assembly (1), and the harvesting head (3) is connected with the cyclone separator (4) through a negative pressure conveying pipe (5);
the power device (2) comprises a motor (2.1), the motor (2.1) is in driving connection with a speed reducer (2.2), the speed reducer (2.2) is provided with a speed reducer output chain wheel (2.2.1) for outputting power, a speed reducer output belt pulley (2.2.2), the speed reducer output chain wheel (2.2.1) drives the travelling wheel (1.2) to rotate and walk through a chain, and the speed reducer output belt pulley (2.2.2) drives the harvesting head (3) to rotate through a belt;
the harvesting head (3) comprises a harvesting head shell (3.1) and a kneading harvesting head combination (3.2) arranged in the harvesting head shell, wherein a feed chute and a discharge chute are arranged at the front side and the rear side of the harvesting head shell (3.1), and a discharge hole is arranged at the upper part of the harvesting head shell; the rubbing harvesting head combination (3.2) comprises a left rubbing head combination (3.2.1) and a right rubbing head combination (3.2.2) which are arranged in parallel, a left synchronous brush belt (3.2.1.3) is rotatably arranged on the left rubbing head combination (3.2.1), a right synchronous brush belt (3.2.2.3) is rotatably arranged on the right rubbing head combination (3.2.2), and bristle brushes (3.2.1.3.2) and bristle brushes (3.2.1.3.3) are respectively arranged on the peripheral surfaces of the left synchronous brush belt (3.2.1.3) and the right synchronous brush belt (3.2.2.3) at intervals, and the length of each bristle brush (3.2.1.3.2) is larger than that of each bristle brush (3.2.1.3.3); when the harvesting head (3) works, the bristle brushes (3.2.1.3.2) and the soft bristle brushes (3.2.1.3.3) on the adjacent surfaces of the left synchronous brush belt (3.2.1.3) and the right synchronous brush belt (3.2.2.3) are in staggered correspondence and synchronously move upwards.
2. The green Chinese onion seed combine harvester of claim 1, wherein: the left kneading head combination (3.2.1) comprises a left driving toothed shaft (3.2.1.1), a left driven toothed shaft (3.2.1.2), a left synchronous brush belt (3.2.1.3), a driving gear (3.2.1.4) and a harvesting scalp belt wheel (3.2.1.5); the left driving toothed shaft (3.2.1.1) and the left driven toothed shaft (3.2.1.2) are rotationally connected with the harvesting head shell (3.1), the driving gear (3.2.1.4) and the harvesting scalp pulley (3.2.1.5) are fixedly connected with the circumferential surface of the left driving toothed shaft (3.2.1.1) positioned at the outer side of the harvesting head shell (3.1), and the harvesting scalp pulley (3.2.1.5) is in transmission connection with the reducer output pulley (2.2.2) through a belt; the left synchronous brush belt (3.2.1.3) is wrapped on the circumferential surfaces of the left driving toothed shaft (3.2.1.1) and the left driven toothed shaft (3.2.1.2) which are positioned on the inner side of the harvesting head shell (3.1);
the right kneading head combination (3.2.2) comprises a right driving toothed shaft (3.2.2.1), a right driven toothed shaft (3.2.2.2), a right synchronous brush belt (3.2.2.3) and a driven gear (3.2.2.4); the right driving toothed shaft (3.2.2.1) and the right driven toothed shaft (3.2.2.2) are rotationally connected with the harvester head shell (3.1), the driven gear (3.2.2.4) is fixedly connected with the circumferential surface of the right driving toothed shaft (3.2.2.1) positioned outside the harvester head shell (3.1), and the driven gear (3.2.2.4) is meshed with the driving gear (3.2.1.4); the right synchronous brush belt (3.2.2.3) is wrapped on the circumferential surfaces of the right driving toothed shaft (3.2.2.1) and the right driven toothed shaft (3.2.2.2) which are positioned on the inner side of the harvesting head shell (3.1);
the bristle brushes (3.2.1.3.2) and the soft brush (3.2.1.3.3) on the adjacent surfaces of the left synchronous brush belt (3.2.1.3) and the right synchronous brush belt (3.2.2.3) are in staggered correspondence.
3. The green Chinese onion seed combine harvester of claim 2, wherein: the bristle brushes (3.2.1.3.2) and the soft brush (3.2.1.3.3) on the outer peripheral surfaces of the left synchronous brush belt (3.2.1.3), the right synchronous brush belt (3.2.2.3) are provided with chamfers corresponding to the feed inlet side, and the chamfers form a kneading harvesting head feed inlet (3.3).
4. The green Chinese onion seed combine harvester of claim 2, wherein: the left kneading head combination (3.2.1) further comprises a left feed port upper shaft (3.2.1.6), a left feed port lower shaft (3.2.1.7), a left feed port upper shaft (3.2.1.6) and a left feed port lower shaft (3.2.1.7) are rotationally connected with the harvesting head shell (3.1) and are arranged at the inner side of the harvesting head shell (3.1); the axis of the upper shaft (3.2.1.6) of the left feed inlet and the axis of the left driving toothed shaft (3.2.1.1) are positioned in the same horizontal plane and are provided with an included angle; the axis of the left feed inlet lower shaft (3.2.1.7) and the axis of the left driven tooth-shaped shaft (3.2.1.2) are positioned in the same horizontal plane and are provided with an included angle; the left synchronous brush belt (3.2.1.3) is wrapped on the left driving toothed shaft (3.2.1.1) which is positioned on the inner side of the harvester head shell (3.1), the left feeding port upper shaft (3.2.1.6) and the left driven toothed shaft (3.2.1.2) which are positioned on the inner side of the harvester head shell (3.1) and the left feeding port lower shaft (3.2.1.7) circumferential surface;
the right kneading head combination (3.2.2) further comprises a right feed inlet upper shaft (3.2.2.5) and a right feed inlet lower shaft (3.2.2.6), wherein the right feed inlet upper shaft (3.2.2.5) and the right feed inlet lower shaft (3.2.2.6) are rotationally connected with the harvesting head shell (3.1) and are arranged on the inner side of the harvesting head shell (3.1); the upper shaft (3.2.2.5) of the right feed inlet and the axis of the right driving toothed shaft (3.2.2.1) are positioned in the same horizontal plane and are provided with an included angle; the lower shaft (3.2.2.6) of the right feed inlet and the axis of the right passive toothed shaft (3.2.2.2) are positioned in the same horizontal plane and are provided with an included angle; the right synchronous brush belt (3.2.2.3) is wrapped on the circumference surface of the right driving toothed shaft (3.2.2.1) which is positioned on the inner side of the harvesting head shell (3.1), the right feeding port upper shaft (3.2.2.5) and the right driven toothed shaft (3.2.2.2) which are positioned on the inner side of the harvesting head shell (3.1) and the right feeding port lower shaft (3.2.2.6);
the left synchronous brush belt (3.2.1.3) and the right synchronous brush belt (3.2.2.3) form a kneading harvester feed inlet (3.3) under the actions of a left feed inlet upper shaft (3.2.1.6), a left feed inlet lower shaft (3.2.1.7), a right feed inlet upper shaft (3.2.2.5) and a right feed inlet lower shaft (3.2.2.6).
5. The green Chinese onion seed combine harvester of claim 3 or 4, wherein: both sides of the feed chute of the harvesting head shell (3.1) are provided with seedling dividing plates (3.1.1).
6. The green Chinese onion seed combine harvester of claim 1, wherein: the cyclone separator (4) comprises a cyclone separation cylinder (4.1), a centrifugal fan (4.2), an air inlet pipe (4.3) and a separation cylinder discharge door (4.4); the centrifugal fan (4.2) is fixedly arranged at the upper part of the cyclone separation cylinder (4.1), the air inlet pipe (4.3) is tangentially communicated with the upper side of the cyclone separation cylinder, and the air inlet pipe (4.3) is connected with a discharge hole of the harvesting head shell (3.1) through the negative pressure conveying pipe (5); the separating cylinder discharging door (4.4) is hinged to the lower portion of the cyclone separating cylinder (4.1), the separating cylinder discharging door (4.4) is further connected with the cyclone separating cylinder (4.1) through an electric telescopic rod (4.4.1), and a weighing sensor (4.4.2) is further arranged on the upper side of the separating cylinder discharging door (4.4).
7. The green Chinese onion seed combine harvester of claim 1, wherein: the cyclone separator (4) comprises a cyclone separation cylinder (4.1), a centrifugal fan (4.2), an air inlet pipe (4.3) and a separation cylinder discharge door (4.4); the centrifugal fan (4.2) is fixedly arranged at the upper part of the cyclone separation cylinder (4.1), the air inlet pipe (4.3) is tangentially communicated with the upper side of the cyclone separation cylinder, and the air inlet pipe (4.3) is connected with a discharge hole of the harvesting head shell (3.1) through the negative pressure conveying pipe (5); the separating cylinder discharging door (4.4) is hinged to the lower part of the cyclone separating cylinder (4.1), and a discharging threshold block (4.4.4) is arranged at the hinged joint of the separating cylinder discharging door (4.4) and the cyclone separating cylinder (4.1); a magnet (4.4.3) is fixedly arranged at the lower part of the separating cylinder discharging door (4.4);
a conveying pipe air door (5.1) is rotationally arranged on the negative pressure conveying pipe (5), an air door control board (5.1.1) fixedly connected with the conveying pipe air door (5.1) is arranged outside the negative pressure conveying pipe (5), and an air door return spring (5.1.2) and an air door control steel wire rope (5.1.3) are arranged on the air door control board (5.1.1).
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