Sunflower harvester

Abstract

The sunflower harvester comprises a vehicle body, and a header, a gap bridge threshing device, a throwing mechanism, a first storage bin and a second storage bin which are arranged on the vehicle body from front to back, and a cab is arranged at the upper part of the gap bridge threshing device; the throwing mechanism comprises a transmission bin, a transmission roller and a separation sieve bottom, and the transmission roller is movably arranged in the transmission bin; a separation sieve bottom is arranged at the lower part in the transmission bin; a sieve plate is arranged at the lower part of the separating sieve bottom; one side of the separating sieve bottom is communicated with the first storage bin; a finished product outlet at the bottom of the separating sieve is communicated with the second storage bin; and a power mechanism is arranged at the upper part of the throwing mechanism and is in transmission connection with the transmission unit of the throwing mechanism. The sunflower disc threshing device is provided with the throwing mechanism, the size of the device can be reduced, the visual field of backward observation of a driver is improved, the trafficability of the device is improved, meanwhile, the device can be combined with the prior art, the sunflower disc threshing capacity of the device can be further improved, and the sunflower disc can be conveniently thrown to the high position.

Description

Technical Field

[0001] The present invention relates to the technical field of sunflower harvesters, and specifically to a sunflower harvester. Background Art

[0002] Sunflowers are important cash crops in China and play a crucial role in the country's food security strategy. To meet China's demand for sunflowers, the mechanized harvesting of sunflowers has become an inevitable trend.

[0003] Currently, sunflower harvesting machinery in China is generally divided into two types. One is the machinery for directly harvesting sunflower heads, and the other is the machinery for threshing and harvesting sunflower cakes and seeds after inserting and harvesting the sunflower heads. The second type of machinery generally includes a vehicle body, a cutting table mechanism, a conveying mechanism, a threshing mechanism, a cleaning mechanism, a sunflower cake collection box, and a seed collection box. The harvesting principle is as follows: In the field, the sunflower heads are pre-cut from the sunflower stalks and inserted upward on the sunflower stalks to dry the seeds; after the seeds are dried, the harvester enters the field for harvesting. The cutting table mechanism strips the dried sunflower heads from the sunflower stalks, and then the sunflower heads enter the conveying mechanism and are sent into the threshing mechanism for threshing. Finally, the threshed seeds and sunflower cakes are respectively sent into the seed collection box and the sunflower cake collection box and emptied regularly for collection.

[0004] However, such sunflower harvesters in the prior art have the following drawbacks when in use:

[0005] 1. Such sunflower harvesters are complex in structure when in use. Extra threshing and transmission structures need to be designed, which will make the overall device wider, or due to layout problems, the vehicle's power mechanism needs to be placed on one side of the cab, resulting in a wider vehicle body, blocking the driver's line of sight, and affecting the passability of the equipment.

[0006] 2. In the prior art, there is also an overbridge threshing structure to replace the conveying mechanism and the extra threshing mechanism in the prior art. However, the transmission height is limited, which is not convenient for conveying the threshed sunflower heads to the storage box. At the same time, the threshing distance is limited, and it is easy to have incomplete threshing.

[0007] Therefore, a sunflower harvester is needed to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a sunflower harvester to solve the problems raised in the above background art.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: a sunflower harvester, comprising a vehicle body, and a header, a bridge threshing device, a throwing mechanism, a first storage bin, and a second storage bin arranged on the vehicle body from front to rear, wherein a cab is arranged on the upper part of the bridge threshing device; the throwing mechanism comprises a transmission bin, a transmission roller, and a separation screen bottom, wherein a plurality of horizontally arranged transmission rollers are arranged inside the transmission bin through a rotating shaft; the transmission rollers gradually rise from the side close to the bridge threshing device to the side far from the bridge threshing device in the transmission bin; a separation screen bottom is fixedly arranged at the lower end of the transmission roller inside the transmission bin;

[0010] A sieve plate is provided at the lower part of the separation screen bottom, and the side of the separation screen bottom away from the bridge threshing device is connected to the first storage bin; the finished product outlet of the separation screen bottom is connected to the second storage bin;

[0011] A power mechanism is arranged on the upper part of the throwing mechanism, and the power mechanism may be an electric motor, and the power mechanism is transmission-connected with the transmission unit of the throwing mechanism.

[0012] Preferably, the throwing mechanism also includes a rotating shaft, a first fixed block, a second fixed block, and the side of the separation screen bottom close to the bridge threshing device is rotatably connected to the transmission bin through the rotating shaft; the first fixed block is fixedly arranged on the side of the transmission bin close to the first storage bin, and the second fixed block is fixedly arranged on the surface of the separation screen bottom, and the first fixed block and the second fixed block are connected by an elastic component, which can be a spring or a damping cylinder, or a combination of the two.

[0013] Preferably, the transmission unit includes a sprocket, a transmission chain, a driving shaft, a first pulley, a second pulley, a transmission belt, a rotating arm, a tensioning wheel, and an electric push rod. A sprocket is fixedly provided at one end of the transmission shaft, a transmission chain is sleeved between the sprockets, a driving shaft is movably provided on one side of the upper end of the transmission bin through a rotating shaft, a first pulley is fixedly provided on the outer side of the driving shaft, a second pulley is fixedly provided on the surface of the upper end transmission shaft, a transmission belt is sleeved between the first pulley and the second pulley, a rotating arm is movably provided on one side of the surface of the transmission bin through a rotating shaft, a tensioning wheel is movably provided at one end of the rotating arm through a rotating shaft, an electric push rod is movably provided at the lower end of the rotating arm on the surface of the transmission bin through a rotating shaft, the movable end of the electric push rod is movably connected to the rotating arm, and the three transmission rollers can be driven to rotate at the same time through the transmission unit to transmit the sunflower disc.

[0014] Preferably, a first fixed frame is provided on one side of the upper end of the sieve plate, a first storage bin is movably provided on the upper end of the first fixed frame via a rotating shaft, a second fixed frame is provided on one side of the first fixed frame, a second storage bin is movably provided on the upper end of the second fixed frame via a rotating shaft, a sealing plate is provided on the upper end of the second storage bin, the sunflower discs thrown out by the transmission roller can be collected through the first storage bin, and the sunflower seeds can be collected through the second storage bin.

[0015] Preferably, a worm wheel fan is provided on one side of the sieve plate. An air inlet pipe is provided on one side of the surface of the worm wheel fan, and an air outlet pipe is fixedly provided on the other side of the surface of the worm wheel fan. A suction pipe is fixedly provided inside the sieve plate. A first connection interface is opened at the upper end of the suction pipe on the surface of the second storage bin, and a second connection interface is opened at the upper end of the air inlet pipe on the surface of the second storage bin. Through the worm wheel fan and the air inlet pipe, the air inside the second storage bin can be pumped out to create a negative pressure inside the second storage bin. At this time, the second storage bin is equivalent to a large vacuum cleaner. Subsequently, the sunflower seeds filtered inside the sieve plate can be sucked into the second storage bin through the suction pipe. In this way, the storage work of sunflower seeds can be completed.

[0016] Preferably, the air outlet pipe is in communication with the inside of the sieve plate. Side holes are provided on the surface of the sieve plate. The air blown out by the worm wheel fan of this device can be introduced into the inside of the sieve plate, so as to perform air separation on the sunflower seeds inside the sieve plate. In this way, smaller impurities and shriveled and lighter sunflower seeds can be blown out from the side holes, thus playing the role of air separation to improve the collection quality of sunflower seeds by the device in the subsequent process.

[0017] Preferably, sealing rings are provided on the outer surfaces of the first connection interface and the second connection interface. When the second storage bin is in the storage state, that is, when the second hydraulic cylinder is in the retracted state, the sealing rings on the lower surfaces of the first connection interface and the second connection interface will respectively fit with the surfaces of the air inlet pipe and the suction pipe, so as to play a sealing role to prevent air leakage at the joints of the air inlet pipe, the suction pipe and the second storage bin.

[0018] Preferably, a first hydraulic cylinder is movably provided between the first fixed frame and the first storage bin through a pin shaft, and a second hydraulic cylinder is movably provided between the second fixed frame and the second storage bin through a pin shaft. By the elongation of the first hydraulic cylinder and the second hydraulic cylinder, the first storage bin and the second storage bin

[0019] can be pushed to rotate, so as to pour out the stored materials inside.

[0020] Preferably, a sealing plate is provided at the upper end of the second storage bin. The upper end of the second storage bin of this device needs to be in a sealed state during operation, and the storage plate can be opened when pouring the materials inside.

[0021] Preferably, a number of first sieve holes are evenly provided at the upper end of the outer surface of the sieve plate, and second sieve holes are provided at the lower end of the outer surface of the sieve plate. The first sieve holes of this device are used to filter out larger impurities, so that the larger impurities are at the upper end of the sieve plate. Subsequently, as the sunflower harvester works, the larger impurities will directly fall off, while the second sieve holes are used to filter out smaller impurities. Finally, the sunflower seeds can be intercepted inside the sieve plate, so that the filtered sunflower seeds can slide along the inclined sieve plate towards the direction of the suction pipe.

[0022] Preferably, a limiting ring is fixedly arranged at the movable end of the damping oil cylinder, an adjusting screw is movably screwed on the lower end of the surface of the damping oil cylinder through threads, and a spring is sleeved on the surface of the damping oil cylinder between the limiting ring and the adjusting screw.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Through the continuously rotating transmission roller, the present invention can convey the sunflower disk obliquely upward, and at the same time, it can also strike the surface of the sunflower disk, so as to thresh the sunflower disk. In this way, threshing and oblique upward conveying can be carried out at the same time. Thus, the device of the present invention can be combined with the prior art, further improving the threshing ability of the device for sunflower disks. And the device can be directly arranged at the lower end of the cab, greatly reducing the volume of the device, improving the driver's rearward viewing field of vision and the passing performance of the device.

[0025] 2. The air outlet of the worm wheel fan of the present invention can be introduced into the inside of the sieve plate, so as to carry out air separation on the sunflower seeds inside the sieve plate, and blow out the smaller impurities and shriveled and lighter sunflower seeds from the side holes. In this way, the function of air separation can be achieved to improve the collection quality of sunflower seeds by the device in the subsequent process.

[0026] 3. When the electric push rod in the transmission unit contracts, it can drive the rotating arm to rotate, thereby controlling whether the pressing wheel tightly presses the transmission belt, and then controlling whether the transmission belt is tightened when needed, and further controlling whether the power transmission of the device is interrupted, so as to facilitate the control of the transmission mechanism to work and adapt to various working conditions. And when dumping the sunflower disk, the transmission mechanism of the device can stop working.

[0027] 4. When the present invention is in use, the distance between the separation sieve bottom and the transmission roller can be adjusted adaptively. When the device runs fast and a large number of sunflower disks are brought into the transmission bin at one time, the large number of sunflower disks can squeeze the separation sieve bottom, causing the elastic component to contract, and the separation sieve bottom moves down a certain distance. In this way, the gap between the separation sieve bottom and the transmission roller can be increased to tide over this congestion time, preventing the situation where manual maintenance and cleaning are required after congestion, and thus facilitating the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall structural schematic diagram of a sunflower harvester of the present invention;

[0029] Figure 2 It is another overall structural schematic diagram of a sunflower harvester of the present invention;

[0030] Figure 3 It is a partial schematic diagram of a sunflower harvester of the present invention;

[0031] Figure 4 Another side view of a sunflower harvester according to the present invention;

[0032] Figure 5 Partial bottom-up view of a sunflower harvester according to the present invention;

[0033] Figure 6 Partial front view of a sunflower harvester according to the present invention Figure 1 ;

[0034] Figure 7 Partial front view of a sunflower harvester according to the present invention Figure 2 ;

[0035] Figure 8 Partial cross-sectional view of a sunflower harvester according to the present invention;

[0036] Figure 9 A sunflower harvester according to the present invention Figure 6 Enlarged view of part A in;

[0037] Figure 10 A sunflower harvester according to the present invention Figure 7 Enlarged view of part B in.

[0038] In the figure: 1, cutting table; 2, overbridge threshing device; 3, transmission bin; 4, transmission drum; 5, rotating shaft; 6, separation sieve bottom; 7, first fixing block; 8, second fixing block; 9, damping oil cylinder; 10, sprocket; 11, transmission chain; 12, driving shaft; 13, first pulley; 14, second pulley; 15, transmission belt; 16, rotating arm; 17, tensioning pulley; 18, electric push rod; 19, sieve plate; 20, first fixing frame; 21, first storage bin; 22, second fixing frame; 23, second storage bin; 24, worm wheel fan; 25, air inlet pipe; 26, air outlet pipe; 27, suction pipe; 28, first connection interface; 29, second connection interface; 30, side hole; 31, first hydraulic cylinder; 32, second hydraulic cylinder; 33, cab;. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figures 1 - 10, the present invention provides a technical solution: a sunflower harvester, including a vehicle body 36, and a cutter head 1, a bridge threshing device 2, a throwing mechanism 35, a first storage bin 21, and a second storage bin 23 arranged on the vehicle body 36 from front to back. A cab 33 is provided above the bridge threshing device 2; a bridge threshing device 2 is arranged in the middle on one side of the cutter head 1, and a throwing mechanism 35 is arranged on one side of the bridge threshing device 2. The throwing mechanism includes a transmission bin 3, a transmission roller 4, a rotating shaft 5, a separating screen bottom 6, a first fixing block 7, a second fixing block 8, and a damping oil cylinder 9. A transmission bin 3 is fixedly arranged on one side of the bridge threshing device 2. A number of transmission rollers 4 are evenly and movably arranged inside the transmission bin 3 through bearings. From the side close to the bridge threshing device 2 to the side far from the bridge threshing device 2 in the transmission bin 3, the transmission rollers 4 gradually rise; a separating screen bottom 6 is fixedly arranged at the lower end of the transmission rollers 4 inside the transmission bin 3; a rotating shaft 5 is movably arranged through a bearing on one side inside the transmission bin 3, and a separating screen bottom 6 is fixedly arranged on the outside of the rotating shaft 5. A first fixing block 7 is fixedly arranged on one side inside the transmission bin 3, a second fixing block 8 is fixedly arranged on the surface of the separating screen bottom 6, and a damping oil cylinder 9 is arranged between the first fixing block 7 and the second fixing block 8. A transmission unit for driving the transmission rollers 4 to rotate is arranged on the surface of the transmission bin 3,

[0041] A sieve plate 19 is provided below the separating screen bottom 6. One side of the separating screen bottom 6 far from the bridge threshing device 2 is communicated with the first storage bin 21; the finished product outlet of the separating screen bottom 6 is communicated with the second storage bin 23;

[0042] A power mechanism 34 is provided above the throwing mechanism 35. In this embodiment, the power mechanism 34 includes a motor and a speed reducer, and the power mechanism 34 is in transmission connection with the transmission unit of the throwing mechanism 35.

[0043] The transmission unit includes a sprocket 10, a transmission chain 11, a driving shaft 12, a first pulley 13, a second pulley 14, a transmission belt 15, a rotating arm 16, a tensioning pulley 17, and an electric push rod 18. A sprocket 10 is fixedly arranged at one end of the transmission shaft, and a transmission chain 11 is sleeved between the sprockets 10. A driving shaft 12 is movably arranged through a rotating shaft on one side at the upper end of the transmission bin 3, and a first pulley 13 is fixedly arranged on the outside of the driving shaft 12. A second pulley 14 is fixedly arranged on the surface of the upper transmission shaft. A transmission belt 15 is sleeved between the first pulley 13 and the second pulley 14. A rotating arm 16 is movably arranged through a rotating shaft on one side of the surface of the transmission bin 3. One end of the rotating arm 16 is movably arranged through a rotating shaft with a tensioning pulley 17. An electric push rod 18 is movably arranged through a rotating shaft at the lower end of the rotating arm 16 on the surface of the transmission bin 3. The movable end of the electric push rod 18 is movably connected with the rotating arm 16 through a rotating shaft. Through the transmission unit, three transmission rollers 4 can be driven to rotate simultaneously to carry out the transmission work of the sunflower plates;

[0044] On one side of the upper end of the sieve plate 19, there is a first fixed frame 20. The upper end of the first fixed frame 20 is movably provided with a first storage bin 21 through a rotating shaft. On one side of the first fixed frame 20, there is a second fixed frame 22. The upper end of the second fixed frame 22 is movably provided with a second storage bin 23 through a rotating shaft. The first storage bin 21 can be used to remove dust from the sunflower trays thrown by the transmission roller 4, and the second storage bin 23 can be used to remove dust from the sunflower seeds;

[0045] On one side of the sieve plate 19, there is a worm wheel blower 24. On one side of the surface of the worm wheel blower 24, there is an air inlet pipe 25. On the other side of the surface of the worm wheel blower 24, there is a fixed air outlet pipe 26. Inside the sieve plate 19, there is a fixed suction pipe 27. On the surface of the second storage bin 23, a first connection interface is opened at the upper end of the suction pipe 27, and a second connection interface is opened at the upper end of the air inlet pipe 25 on the surface of the second storage bin 23. Through the worm wheel blower 24 and the air inlet pipe 25, the air inside the second storage bin 23 can be pumped out so that a negative pressure is formed inside the second storage bin 23. At this time, the second storage bin 23 is equivalent to a large vacuum cleaner. Subsequently, the filtered sunflower seeds inside the sieve plate 19 can be sucked into the second storage bin 23 through the suction pipe 27; In this way, the storage work of the sunflower seeds can be completed.

[0046] The air outlet pipe 26 is in mutual communication with the inside of the sieve plate 19. Side holes 30 are opened on the surface of the sieve plate 19. The air outlet of the worm wheel blower 24 of this device can be introduced into the inside of the sieve plate 19, so that the sunflower seeds inside the sieve plate 19 can be wind-selected, and the smaller impurities and shriveled and lighter sunflower seeds can be blown out from the side holes 30. In this way, the function of wind selection can be achieved to improve the collection quality of the sunflower seeds in the subsequent process of the device;

[0047] Sealing rings are provided on the outer surfaces of the first connection interface 28 and the second connection interface 29. When the second storage bin 23 is in the storage state, that is, when the second hydraulic cylinder 32 is in the contracted state, the sealing rings on the lower surfaces of the first connection interface 28 and the second connection interface 29 will respectively fit with the surfaces of the air inlet pipe 25 and the suction pipe 27, so as to play a sealing role to prevent air leakage at the connection between the air inlet pipe 25, the suction pipe 27 and the second storage bin 23;

[0048] A first hydraulic cylinder 31 is movably provided between the first fixed frame 20 and the first storage bin 21 through a pin shaft. A second hydraulic cylinder 32 is movably provided between the second fixed frame 22 and the second storage bin 23 through a pin shaft. By extending the first hydraulic cylinder 31 and the second hydraulic cylinder 32, the first storage bin 21 and the second storage bin 23 can be pushed to rotate, so that the stored materials inside can be poured out;

[0049] A sealing plate is provided at the upper end of the second storage bin 23. The upper end of the second storage bin 23 of this device needs to be in a sealed state during operation, and the storage plate can be opened when pouring the materials inside;

[0050] A number of first sieve holes are evenly arranged at the upper end of the outer surface of the sieve plate 19, and a second sieve hole is arranged at the lower end of the outer surface of the sieve plate 19. The first sieve holes of the device are used to filter out larger impurities, so that the larger impurities are located at the upper end of the sieve plate 19. Subsequently, with the operation of the sunflower harvester, the larger impurities will directly fall off. The second sieve hole is used to filter out smaller impurities, and finally the sunflower seeds can be intercepted inside the sieve plate 19, so that the filtered sunflower seeds can slide along the inclined sieve plate 19 towards the suction pipe 27.

[0051] A limiting ring 32 is fixedly arranged at the movable end of the damping oil cylinder 9. An adjusting screw 33 is rotatably screwed on the lower end surface of the damping oil cylinder 9 through threads. A spring 34 is sleeved on the surface of the damping oil cylinder 9 between the limiting ring 32 and the adjusting screw 33. The spring 34 can automatically push the damping oil cylinder 9 to extend and reset, so that the separation sieve bottom 6 can be lifted and reset. By rotating the adjusting screw 33 to adjust the initial compression degree of the spring 34, the downward movement threshold of the separation sieve bottom 6 each time can be changed.

[0052] Working principle: When using this device, the device can strip the sunflower disks from the stems through the cutting table 1, so that the sunflower disks can be introduced into the cutting table 1. Subsequently, the cutting table 1 conveys the sunflower disks to the overbridge threshing device 2. Then, after the overbridge threshing device 2 performs preliminary threshing on the sunflower disks, the sunflower disks can enter the throwing mechanism of this device after preliminary threshing by the overbridge threshing device 2. Subsequently, in the throwing mechanism, through the continuously rotating transmission roller 4, the sunflower disks can be conveyed obliquely upward, and at the same time, they can also strike the surface of the sunflower disks, so as to play a role in threshing the sunflower disks. In this way, threshing can be carried out and the sunflower disks can be conveyed obliquely upward. In this way, this device can be combined with the existing technology, so as to further improve the threshing ability of the device for sunflower disks and facilitate the throwing of sunflower disks to a higher place; finally, the sunflower disks will be conveyed to the upper part and be thrown into the first storage bin 21 by the transmission roller 4 at the uppermost part with the cooperation of centrifugal force, and the threshed sunflower seeds can enter the upper end of the sieve plate 19 through the filtration of the separation sieve bottom 6;

[0053] At this time, the first sieve holes are used to filter out larger impurities, causing the larger impurities to be located above the sieve plate 19. Subsequently, as the sunflower harvester operates, the larger impurities directly fall off. The second sieve holes are used to filter out smaller impurities, and finally, the sunflower seeds can be retained inside the sieve plate 19, enabling the filtered sunflower seeds to slide along the inclined sieve plate 19 towards the suction pipe 27. When the sunflower seeds move towards the suction pipe 27, at this time, through the worm wheel blower 24 and the air inlet pipe 25, the air inside the second storage bin 23 can be extracted to create a negative pressure inside the second storage bin 23. At this time, the second storage bin 23 is equivalent to a large-sized vacuum cleaner. Subsequently, the filtered sunflower seeds inside the sieve plate 19 can be sucked into the second storage bin 23 through the suction pipe 27; thus, the storage work of the sunflower seeds can be completed.

[0054] And at this time, the air output of the worm wheel blower 24 can be introduced into the sieve plate 19, thereby enabling the winnowing of the sunflower seeds inside the sieve plate 19, and thus the smaller impurities and the shriveled and lighter sunflower seeds can be blown out from the side holes 30, so that the winnowing effect can be achieved to improve the collection quality of the sunflower seeds in the subsequent device.

[0055] Meanwhile, when the device is in use, by the contraction of the electric push rod 18 in the transmission unit, the rotating arm 16 can be driven to rotate, thereby controlling whether the pressing wheel tightly presses the transmission belt 15, and thus controlling whether the transmission belt 15 is tightened when needed, and further controlling whether the power transmission of the device is interrupted, so as to facilitate the control of the transmission mechanism to work and adapt to various working conditions. For example, when dumping the sunflower trays, the transmission mechanism of the device can stop working.

[0056] Finally, when the device is in use, the distance between the separation sieve bottom 6 and the transmission drum 4 can be adjusted adaptively. When the device runs at a high speed and a large number of sunflower trays are brought into the transmission bin 3 at one time, the large number of sunflower trays can squeeze the separation sieve bottom 6, causing the damping oil cylinder 9 to contract, and the separation sieve bottom 6 to move down a certain distance. In this way, the gap between the separation sieve bottom 6 and the transmission drum 4 can be increased to tide over this congestion period, preventing the situation where manual maintenance and cleaning are required after congestion, and thus facilitating the use.

[0057] It should be noted that the bridge threshing device 22 in this application document is a Chinese patent with the patent number 202320498902.7 in the prior art. It is a mature prior art. This device can be used in combination with this patent to achieve better threshing and throwing effects for sunflower trays.

[0058] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sunflower harvester, comprising a vehicle body (36), and a header (1), a cross-bridge threshing device (2), a throwing mechanism (35), a first storage bin (21), and a second storage bin (23) which are arranged on the vehicle body (36) from front to back, and a cab (33) is arranged above the cross-bridge threshing device (2); characterized in that: The throwing mechanism (35) includes a transmission bin (3), transmission rollers (4), and a separation sieve bottom (6). A number of horizontally arranged transmission rollers (4) are movably arranged inside the transmission bin (3) through a rotating shaft; from the side of the transmission bin (3) close to the over-bridge threshing device (2) to the side far from the over-bridge threshing device (2), the transmission rollers (4) gradually rise; a separation sieve bottom (6) is fixedly arranged inside the transmission bin (3) at the lower end of the transmission rollers (4). A sieve plate (19) is arranged at the lower part of the separation sieve bottom (6). The side of the separation sieve bottom (6) far from the over-bridge threshing device (2) is communicated with the first storage bin (21); the finished product outlet of the separation sieve bottom (6) is communicated with the second storage bin (23). A power mechanism (34) is arranged at the upper part of the throwing mechanism (35), and the power mechanism (34) is in transmission connection with the transmission unit of the throwing mechanism (35).

2. A sunflower harvester according to claim 1, characterized in that: The throwing mechanism further includes a rotating shaft (5), a first fixing block (7), a second fixing block (8). One side of the separation sieve bottom (6) close to the over-bridge threshing device (2) is rotatably connected to the transmission bin (3) through the rotating shaft (5); a first fixing block (7) is fixedly arranged on one side of the transmission bin (3) close to the first storage bin (21), a second fixing block (8) is fixedly arranged on the surface of the separation sieve bottom (6), and the first fixing block (7) and the second fixing block (8) are connected through an elastic component.

3. A sunflower harvester according to claim 1, characterized in that: The transmission unit includes a sprocket (10), a transmission chain (11), a driving shaft (12), a first pulley (13), a second pulley (14), a transmission belt (15), a rotating arm (16), a tension pulley (17), and an electric push rod (18). A sprocket (10) is fixedly arranged at one end of the transmission shaft, the transmission chain (11) is sleeved between the sprockets (10), one side of the upper end of the transmission bin (3) is movably arranged with the driving shaft (12) through a rotating shaft, a first pulley (13) is fixedly arranged on the outer side of the driving shaft (12), a second pulley (14) is fixedly arranged on the surface of the upper transmission shaft, the transmission belt (15) is sleeved between the first pulley (13) and the second pulley (14), one side of the surface of the transmission bin (3) is movably arranged with the rotating arm (16) through a rotating shaft, one end of the rotating arm (16) is movably arranged with the tension pulley (17) through a rotating shaft, an electric push rod (18) is movably arranged at the lower end of the rotating arm (16) on the surface of the transmission bin (3) through a rotating shaft, and the movable end of the electric push rod (18) is movably connected to the rotating arm (16) through a rotating shaft.

4. A sunflower harvester according to claim 1, characterized in that: A first fixing frame (20) is arranged at one side of the upper end of the sieve plate (19). The first storage bin (21) is movably arranged at the upper end of the first fixing frame (20) through a rotating shaft. A second fixing frame (22) is arranged on one side of the first fixing frame (20). The second storage bin (23) is movably arranged at the upper end of the second fixing frame (22) through a rotating shaft. A sealing plate is arranged at the upper end of the second storage bin (23).

5. A sunflower harvester according to claim 4, characterized in that: The collection mechanism further includes a worm wheel blower (24), an air inlet pipe (25), an air outlet pipe (26), a suction pipe (27), a first connection interface (28), and a second connection interface. A worm wheel blower (24) is arranged on one side of the sieve plate (19). An air inlet pipe (25) is arranged on one side surface of the worm wheel blower (24). An air outlet pipe (26) is fixedly arranged on the other side surface of the worm wheel blower (24). A suction pipe (27) is fixedly arranged inside the sieve plate (19). A first connection interface (28) is opened at the upper end of the suction pipe (27) on the surface of the second storage bin (23). A second connection interface (29) is opened at the upper end of the air inlet pipe (25) on the surface of the second storage bin (23).

6. A sunflower harvester according to claim 5, characterized in that: The air outlet pipe (26) is in mutual communication with the inside of the sieve plate (19), and side holes (30) are opened on the surface of the sieve plate (19).

7. A sunflower harvester according to claim 5, characterized in that: Sealing rings are arranged on the outer side surfaces of the first connection interface (28) and the second connection interface (29).

8. A sunflower harvester according to claim 4, characterized in that: A first hydraulic cylinder (31) is movably arranged between the first fixed frame (20) and the first storage bin (21) through a pin shaft. A second hydraulic cylinder (32) is movably arranged between the second fixed frame (22) and the second storage bin (23) through a pin shaft.

9. A sunflower harvester according to claim 4, characterized in that: A number of first sieve holes are evenly opened at the upper end of the outer side surface of the sieve plate (19), and second sieve holes are opened at the lower end of the outer side surface of the sieve plate (19).

10. A sunflower harvester according to claim 1, characterized in that: A limit ring (32) is fixedly arranged at the movable end of the damping oil cylinder (9). An adjusting screw (33) is movably screwed on the lower end surface of the damping oil cylinder (9) through a thread. A spring (34) is sleeved between the limit ring (32) and the adjusting screw (33) on the surface of the damping oil cylinder (9).

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