A harvester

Abstract

The utility model provides a harvester, including the stripping device for corn ear bract removal, set in stripping device below with separating bract and kernel carries out the cleaning of cleaning screen, and set in stripping device and cleaning screen between for the bract and kernel that falls to the auxiliary cleaning device of cleaning screen disperses, wherein, auxiliary cleaning device drives the raking tooth on the raking axle through the eccentric motion of first swing arm, second swing arm, falls the bract on the cleaning screen, even disperses to the cleaning screen from the rear of cleaning screen, separates the bract and kernel, falls the kernel, after the collection of kernel recovery subassembly, can be transported to the kernel box or ear box, when using kernel box, can carry out the lifting of kernel box and overturn. The utility model provides a harvester, simple structure, high reliability, can obviously promote the cleaning effect of harvester, promotes the ear and kernel transfer efficiency of harvester.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a harvester. Background Technology

[0002] In existing corn harvesters, after the ears are picked at the header, a conveyor transports the ears to the hulling device to remove the husks. During this process, corn kernels often fall off along with the husks. Normally, the husks fall into a cleaning mechanism below, where they separate from the kernels. The fallen kernels are collected, and the husks are discharged from the harvester. With the trend towards larger domestically produced harvesters, the feed rate of the header has increased, and the processing capacity of the various processing mechanisms has improved accordingly. This has resulted in a greater amount of husks and stalks per unit time, leading to husk and kernel accumulation. Due to the increased size of the processing mechanisms, uneven husk distribution and insufficient cleaning occur, affecting the cleaning effect and causing kernel loss and waste. Utility Model Content

[0003] The purpose of this invention is to provide a harvester that solves the problem of insufficient processing and accumulation of husks in the cleaning system after the peeling device has finished peeling, thereby effectively improving the harvester's operating efficiency and quality.

[0004] According to one aspect of the present invention, a harvester is provided, comprising a peeling device, a cleaning sieve, and an auxiliary cleaning device; the peeling device is used to remove husks from corn ears; the cleaning sieve is disposed below the peeling device to clean the separated husks and kernels; the auxiliary cleaning device is disposed between the peeling device and the cleaning sieve to disperse husks and kernels that fall onto the cleaning sieve; the auxiliary cleaning device comprises: a conveying shaft, teeth, a first swing arm, and a second swing arm; the conveying shaft is disposed along the width direction of the harvester; the teeth are sequentially and movably disposed along the extension direction of the conveying shaft, and the conveying shaft includes at least two teeth arranged in parallel in sequence; one end of the first swing arm is movably connected to one end of the conveying shaft; the second swing arm is disposed opposite to the first swing arm on the conveying shaft, and the second swing arm is movably connected to the other side of the conveying shaft; the first swing arm and the second swing arm swing synchronously, driving the conveying shaft to rotate eccentrically, thereby causing the teeth to distribute the husks evenly along the direction of the cleaning sieve.

[0005] By setting an auxiliary cleaning device between the peeling device and the cleaning screen, the cleaning effect of the husks can be effectively improved, allowing the husks to be evenly distributed on the cleaning screen for screening, thereby improving cleaning efficiency, reducing the seed content of the husks, and improving the harvesting quality of the harvester.

[0006] Furthermore, the system also includes a transmission system for driving the auxiliary cleaning device. The transmission system comprises: a first pulley, a drive shaft, a transition sprocket, a first linkage shaft, a second sprocket, and a third sprocket. The first pulley is connected to the engine to provide power. The drive shaft is arranged along the width direction of the harvester. The first pulley is located on one side of the drive shaft, and the first sprocket is located on the opposite side of the drive shaft. The transition sprocket is mounted on the harvester frame, and the first sprocket and the transition sprocket are connected by a chain. The first linkage shaft is parallel to the drive shaft and located below the cleaning screen. The second sprocket and the transition sprocket are connected by a chain. The second sprocket is located on one side of the first linkage shaft and rotates synchronously with the transition sprocket. The first swing arm rotates eccentrically with the second sprocket. The third sprocket is located on the opposite side of the first linkage shaft and rotates synchronously with the first linkage shaft. The second swing arm is located on the opposite side of the first linkage shaft and rotates eccentrically with the third sprocket.

[0007] The drive structure of the auxiliary cleaning device is simple and easy to disassemble and assemble, which can improve the efficiency of harvester relocation operations.

[0008] Preferably, the auxiliary cleaning device further includes a first limiting arm and a second limiting arm disposed at both ends of the conveying shaft; a first side portion including a first limiting hole and a second limiting hole are disposed opposite to each other in the length direction of the harvester between the peeling device and the cleaning screen, and the conveying shaft passes through the first limiting hole and the second limiting hole; the other end of the first limiting arm is movably connected to the first upper beam of the first side portion through a connector; the other end of the second limiting arm is movably connected to the second upper beam of the second side portion through a connector.

[0009] Preferably, the cleaning screen includes a third swing arm that rotates synchronously with the second sprocket and a fourth swing arm that rotates synchronously with the third sprocket, the third swing arm and the fourth swing arm being respectively disposed at both ends of the second linkage shaft.

[0010] Preferably, the cleaning screen further includes a first connecting rod and a second connecting rod that are drively connected to the third swing arm and the fourth swing arm. One end of the first connecting rod is connected to one side of the second linkage shaft, and the other end of the first connecting rod is connected to the first lower beam of the first side portion through the connector. One end of the second connecting rod is connected to the opposite side of the second linkage shaft, and the other end of the second connecting rod is connected to the second lower beam of the second side portion through the connector.

[0011] Preferably, the cleaning screen further includes a third link and a fourth link symmetrically arranged with the first link and the second link in the length direction of the cleaning screen. One end of the third link is connected to the cleaning screen, and the other end of the third link is connected to the first lower beam of the first side portion through the connector.

[0012] Preferably, the first connecting rod includes a support plate, a first rotating part, a bending part, and a second rotating part. The support plate is disposed at one end of the first rotating part. The first rotating part and the bending part are fixed by a reinforcing plate. The second rotating part is disposed on the outside of the first lower beam. An opening is provided at the bottom of the second rotating part. The connecting member is disposed on the lower side of the first lower beam and fixed to the opening.

[0013] Preferably, the connector includes a hollow shaft, a pin with a fixed opening inside the hollow shaft, an upper bearing and a lower bearing for fixing the hollow shaft, and the connector is fixed to the frame by bolts.

[0014] Preferably, the device further includes a grain collection device, which includes a grain recovery assembly disposed below the cleaning screen and a grain elevator disposed on the side of the harvester. The grain elevator is connected to the grain recovery assembly. A grain fan is disposed on top of the grain elevator for grain removal. A grain channel is connected to the grain fan and the grain elevator for discharging grains into a grain box or ear box.

[0015] Preferably, the grain channel includes a cob box channel and a grain box channel, the cob box channel being connected to the cob box, and the opening of the grain box channel being located above the grain box; the bottom plate of the cob box channel is provided with a grain channel opening, the grain channel opening being connected to the grain box channel; the grain box channel and the cob box channel are switched by a baffle, one end of the baffle being rotatably mounted on the bottom plate to block the grain channel opening.

[0016] Preferably, one end of the baffle is provided with a rotating component and rotates around the rotating component; the rotating component includes a rotating handle for switching the baffle setting angle and a rotating handle fixing plate, and the rotating handle and the fixing plate are fixed by a pin.

[0017] Preferably, the grain box is located on one side of the harvester, adjacent to the grain elevator. The grain box is connected to the harvester frame via a base frame. The grain box is equipped with a drive device that can drive the grain box to rotate. The drive device includes a rotating cylinder, a rotating frame, and a grain box support frame.

[0018] Preferably, the peeling device includes a star wheel assembly rotatably mounted on the peeling frame for backward feeding of corn ears, and peeling rollers disposed below the star wheel assembly for peeling the ears, the peeling device including at least seven sets of peeling rollers.

[0019] This utility model provides a harvester that, by incorporating an auxiliary cleaning device, can evenly distribute the husks onto a cleaning sieve, thereby improving grain screening efficiency and reducing grain loss. The auxiliary cleaning device has a simple drive structure, is easy to assemble and disassemble, and is highly adaptable. The harvester provided by this utility model can reduce labor costs and improve the quality of harvesting operations. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a schematic diagram of the right side of a harvester provided by this utility model.

[0022] Figure 2 This is a schematic diagram of the left side of a harvester provided by this utility model.

[0023] Figure 3 This is a schematic diagram of a peeling device provided by the present invention.

[0024] Figure 4 A schematic diagram of the auxiliary cleaning device provided by this utility model Figure 1 .

[0025] Figure 5 A schematic diagram of the auxiliary cleaning device provided by this utility model Figure 2 .

[0026] Figure 6 A schematic diagram of the auxiliary cleaning device provided by this utility model Figure 3 .

[0027] Figure 7 A schematic diagram of the auxiliary cleaning device provided by this utility model Figure 4 .

[0028] Figure 8 A schematic diagram of the auxiliary cleaning device provided by this utility model Figure 5 .

[0029] Figure 9 This is a schematic diagram of the connecting component structure in an auxiliary cleaning device provided by this utility model.

[0030] Figure 10 A schematic diagram of a grain blower and grain channel structure provided by this utility model. Figure 1 .

[0031] Figure 11 A schematic diagram of a grain blower and grain channel structure provided by this utility model. Figure 2 .

[0032] Figure 12 A schematic diagram of a grain box flipping structure provided by this utility model.

[0033] Figure 13 This is a schematic diagram of a grain box in a flipped state, which is provided for this utility model.

[0034] Explanation of icon numbers: 100-Harvester; 1-Peeling device; 11-Star wheel (not shown); 12-Peeling roller; 2-Cleaning screen; 21-Third swing arm; 22-Fourth swing arm; 23-Second linkage shaft; 24-First connecting rod; 241-Pattern; 242-First rotating part; 243-Bending part; 244-Second rotating part; 25-Second connecting rod; 26-Third connecting rod; 27-Fourth connecting rod; 3-Auxiliary cleaning device; 31-Pushing shaft; 32-Pushing tooth; 33-First swing arm; 34-Second swing arm; 35-First limiting arm; 36-Second limiting arm; 4-Transmission system; 41-First pulley; 42-Drive shaft; 43-First sprocket; 44-Transition sprocket; 45-First linkage shaft; 46-Second sprocket; 47-Third sprocket; 51-First side part; 511-First limiting hole; 52-Second side part; 521 - Second limiting hole; 53- First upper beam; 54- Second upper beam; 55- First lower beam; 56- Second lower beam; 57- Connector; 571- Hollow shaft; 572- Pin; 573- Upper bearing; 574- Lower bearing; 6- Grain collecting device; 61- Grain recycling assembly; 62- Grain elevator; 63- Grain fan; 64- Grain channel; 641- Ear box channel; 6411- Bottom Plate; 642-Grain box channel; 643-Baffle; 644-Grain channel opening; 645-Rotating component; 645a-Rotating handle; 645b-Rotating handle fixing plate; 65-Grain box; 651-Drive device; 651a-Tilting cylinder; 651b-Tilting frame; 651c-Grain box support frame; 651d-Tilting chute; 651e-Tilting connecting rod; 652-Base frame; 7-Ear box. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0037] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0041] See Figure 1 , Figure 2 This embodiment provides a harvester for corn harvesting. The header cuts the corn stalks, separating the ears from the stalks. The ears are then conveyed by an elevator to a hulling device 1 for hull removal. During hull removal, a star wheel conveys the ears to the rear of the hulling device 1, and hulling rollers 12 located below the star wheel remove the hulls. The ears are hulled simultaneously as they are conveyed backward, thus improving work efficiency. In this embodiment, seven sets of hulling rollers 12 are used for hull removal. The hulls are screened by a cleaning sieve 2 to separate the kernels from the hulls. The hulls are then chopped by a hull chopping device and discharged from the harvester. The kernels pass through a kernel collection component 61 below the cleaning sieve 2 and are then conveyed by a kernel elevator 62 connected to the kernel collection component 61 to an ear box 7 or a kernel box 65.

[0042] See Figures 3-9 During the husk removal process, the husks contain kernels that have fallen from the corn cobs. A cleaning sieve 2 is positioned below the peeling device 1 and uses vibration to separate the kernels from the husks. The separated corn kernels fall into the kernel collection assembly 61 below. The husks are then chopped by the husk chopping device and discharged from the harvester. In this embodiment, to ensure the husks are evenly distributed on the cleaning sieve 2, an auxiliary cleaning device 3 is provided between the peeling device 1 and the cleaning sieve 2. The auxiliary cleaning device 3 is used to evenly distribute the husks on the cleaning sieve 2, enabling more efficient separation of the husks and mixed corn kernels. The auxiliary cleaning device 3 includes a conveying shaft 31, a conveying tooth 32, a first swing arm 33, and a second swing arm 34. The conveying shaft 31 is used to set the teeth 32. The conveying shaft 31 is set along the width direction of the harvester, and the teeth 32 are sequentially and movably set along the extension direction of the conveying shaft 31. At least two teeth 32 are arranged side by side on the conveying shaft 31 to disperse the accumulated husks onto the cleaning screen 2. One end of the first swing arm 33 is movably connected to one end of the conveying shaft 31. The second swing arm 34 is set opposite to the first swing arm 33 on the conveying shaft 31, and the second swing arm 34 is movably connected to the other side of the conveying shaft 31. The first swing arm 33 and the second swing arm 34 swing synchronously, driving the conveying shaft 31 to rotate eccentrically. With the working direction of the harvester as the front, under the synchronous action of the first swing arm 33 and the second swing arm 34, the teeth on the conveying shaft 31 push the husks from the rear of the cleaning screen 2 to the front of the cleaning screen 2 to avoid the accumulation of husks. If the cleaning screen 2 does not clean sufficiently, the grains are discharged along with the husks. By setting up an auxiliary cleaning device 3, the implementation method can effectively prevent the husks from accumulating on the cleaning screen 2, avoid blockage during the cleaning process, and prevent insufficient separation of husks and grains. This can significantly improve the working quality of the harvester and increase economic benefits.

[0043] See Figure 4 , Figure 5 , Figure 6In a preferred embodiment, the auxiliary cleaning device 3 further includes a first limiting arm 35 and a second limiting arm 36 disposed at both ends of the conveying shaft 31. A first side portion 51 and a second side portion 52 are respectively disposed on both sides between the peeling device 1 and the cleaning screen 2. A first limiting hole 511 is provided on the first side portion 51, and a second limiting hole 521 is provided on the second side portion 52. The conveying shaft 31 passes through the first limiting hole 511 and the second limiting hole 521 and rotates between the first limiting hole 511 and the second limiting hole 521. The first limiting arm 35... One end is connected to the conveying shaft 31, and the other end is movably connected to the first upper beam 53 of the first side 51 through a connector 57. One end of the second limiting arm 36 is connected to the other side of the conveying shaft 31, and the other end of the second limiting arm 36 is movably connected to the second upper beam 54 of the second side 52 through a connector 57. During the operation of the conveying shaft 31 along with the first swing arm 33 and the second swing arm 34, the conveying position of the conveying shaft 31 is restricted due to the first limiting arm 35 and the second limiting arm 36, thus ensuring the effectiveness of the auxiliary cleaning device 3.

[0044] The auxiliary cleaning device 3 and its transmission system 4 have a simple structure and can be easily disassembled during harvester operation. The transmission system 4 of the auxiliary cleaning device 3 includes a first pulley 41 connected to the engine power supply, and a drive shaft 42 arranged along the width direction of the harvester, outputting power to the other side of the harvester. The drive shaft 42 rotates synchronously with the first pulley 41. A first sprocket 43 is arranged on the other side of the drive shaft 42, rotating synchronously with the drive shaft 42 to drive the related accessories of the peeling device 1, the auxiliary cleaning device 3, and the cleaning screen 2. Specifically, a transition sprocket 44 is mounted on the harvester frame, and the first sprocket 43 and the transition sprocket 44 are connected by a chain, rotating synchronously with the first sprocket 43. The first linkage shaft 45 is parallel to the transmission shaft 42 and is positioned below the cleaning screen 2. A second sprocket 46 and a third sprocket 47 are respectively installed at both ends of the first linkage shaft 45. The second sprocket 46 and the transition sprocket 44 are located on the same side and rotate synchronously. The third sprocket 47 rotates synchronously with the second sprocket 46 under the drive of the first linkage shaft 45. In this embodiment, the second sprocket 46 and the third sprocket 47 are eccentric sprockets, driving the auxiliary cleaning device 3 to perform eccentric motion. By setting the transition sprocket 44, the chain transmission length between the first sprocket 43 and the second sprocket 46 is reduced, kinetic energy loss is reduced, and the reliability of the transmission system 4 is ensured. Specifically, the first swing arm 33 rotates eccentrically with the second sprocket 46, and the second swing arm 34 is located on the opposite side of the first linkage shaft 45. The second swing arm 34 also rotates eccentrically with the third sprocket 47, thereby driving the auxiliary cleaning device 3 to push the husks from the rear side of the cleaning screen 2 to the front side of the cleaning screen 2. This transmission system 4 has a simple structure, is easy to disassemble and assemble, and can improve the efficiency of harvester relocation operations and ensure the working effect. In a specific embodiment, this transmission system 4 is also used to drive the cleaning screen 2 to vibrate, separating the grains and husks. The cleaning screen 2 includes a third swing arm 21 that rotates synchronously with the second sprocket 46 and a fourth swing arm 22 that rotates synchronously with the third sprocket 47. A second linkage shaft 23 is parallel to the first linkage shaft 45, located below and connected to the cleaning screen 2. The third swing arm 21 is located inside the first swing arm 33 and rotates synchronously with the second sprocket 46. The fourth swing arm 22 is located inside the second swing arm 34 and rotates synchronously with the third sprocket 47. The other ends of the third and fourth swing arms 21 and 22 are movably connected to the second linkage shaft 23. The cleaning screen 2 and the auxiliary cleaning device 3 can work synchronously. During the vibration of the cleaning screen 2, the auxiliary cleaning device 3 continuously performs the action of evenly spreading the husks onto the cleaning screen 2. Due to the simple structure of the auxiliary cleaning device 3, a malfunction of the auxiliary cleaning device 3 will not affect the continued operation of the vibrating screen or the normal working state of the harvester, thus ensuring the continuous harvesting process for the user.

[0045] The cleaning screen 2 also includes a first connecting rod 24 and a second connecting rod 25 that are connected to the third swing arm 21 and the fourth swing arm 22. The first connecting rod 24 and the second connecting rod 25 are symmetrically arranged. One end of the first connecting rod 24 is connected to one side of the second linkage shaft 23, and the other end of the first connecting rod 24 is connected to the first lower beam 55 of the first side part 51 through the connector 57. One end of the second connecting rod 25 is connected to the other side of the second linkage shaft, and the other end of the second connecting rod 25 is connected to the second lower beam 56 of the second side part 52 through the connector 57. Therefore, the cleaning screen 2 can vibrate in the front and back direction of the harvester with the second linkage shaft 23 as the rotating axis to achieve the separation of grains and husks. Because the cleaning area of ​​the cleaning screen 2 is large, a third connecting rod 26 and a fourth connecting rod 27 are also provided, symmetrically arranged along the length of the cleaning screen 2 with the first connecting rod 24 and the second connecting rod 25, respectively. The third connecting rod 26 is located on the same side as the first connecting rod 24, in front of the first connecting rod 24. The fourth connecting rod 27 is located on the same side as the second connecting rod 25, in front of the second connecting rod 25. The third connecting rod 26 and the fourth connecting rod 27 swing synchronously with the cleaning screen 2. One end of the third connecting rod 26 is connected to the cleaning screen 2, and the other end of the third connecting rod 26 is connected to the first lower beam 55 of the first side 51 through a connector 57. Correspondingly, one end of the fourth connecting rod 27 is connected to the cleaning screen 2, and the other end of the fourth connecting rod 27 is connected to the second lower beam 56 of the second side 52 through a connector 57, thereby ensuring the cleaning effect and structural stability of the cleaning screen 2.

[0046] Specifically, to ensure the stability of the cleaning screen 2 during operation and to prevent mutual interference between the first swing arm 33, second swing arm 34, third swing arm 21, fourth swing arm 22, first connecting rod 24, and second connecting rod 25 during operation, the structure of the first connecting rod 24 is illustrated below. The first connecting rod 24 includes a support plate 241, a first rotating part 242, a bending part 243, and a second rotating part 244. The support plate 241 is located at one end of the first rotating part 242 for connection with the second linkage shaft 23 to maintain synchronous rotation. The first rotating part 242 and the bending part 243 are fixed by a reinforcing plate. The second rotating part 244 is located outside the first lower beam 55, and an opening is provided at the bottom of the second rotating part 244. A connecting piece 57 is located on the lower side of the first lower beam 55 and fixed to the opening to limit the cleaning swing amplitude of the cleaning screen 2 and ensure the cleaning effect. (See also...) Figure 9 In the embodiment, the connector 57 is provided with a hollow shaft 571, a pin 572 placed inside the hollow shaft 571 for fixing the opening, and an upper bearing 573 and a lower bearing 574 for fixing the hollow shaft 571. The connector 57 is fixed to the frame by bolts so that the cleaning screen 2 and the auxiliary cleaning device 3 can operate in a specific working area and working range.

[0047] See Figures 10-13The harvester provided in this embodiment also includes a grain collection device 6, which collects and transports the cleaned grains. The grain collection device 6 includes a grain recovery assembly 61 located below the cleaning screen 2, and a grain elevator 62 located on the side of the harvester. The grain elevator 62 is connected to the grain recovery assembly 61. A grain blower 63 for removing impurities from the grains is located on top of the grain elevator 62. A grain channel 64 is connected to the grain blower 63 and the grain elevator 62, and is used to discharge grains into the grain box 65 or the ear box 7. In this embodiment, the user can choose to collect the grains separately or collect them together with the ears. Specifically, the grain channel 64 includes a ear box channel 641 and a grain box channel 642. The ear box channel 641 is connected to the ear box 7. The opening of the grain box channel 642 is located above the grain box 65. The bottom plate 6411 of the ear box channel 641 has a grain channel opening 644, which is connected to the grain box channel 642. A baffle 643 is provided between the grain box channel 642 and the ear box channel 641. The grain collection mode can be adjusted by adjusting the baffle 643. One end of the baffle 643 is rotatably mounted on the bottom plate 6411. Rotating the baffle 643 can block or open the grain channel opening 644, thus switching the grain collection mode. A rotating component 645 is provided at one end of the baffle 643, and the baffle rotates around the rotating component 645. The rotating component 645 is located at the grain channel opening 644. The rotating component 645 includes a rotating handle 645a for switching the angle of the baffle 643 and a rotating handle fixing plate 645b. The rotating handle 645a and the rotating handle fixing plate 645b are fixed by a pin. In a specific embodiment, the grain box 65 is located on one side of the harvester, adjacent to the grain elevator 62. The grain box 65 is connected to the harvester frame via a base frame 652. The grain box 65 is equipped with a driving device 651, which can drive the grain box 65 to rotate. Specifically, the grain box driving device 651 includes a rotating cylinder 651a, a rotating frame 651b, and a grain box support frame 651c. The grain box support frame 651c is arranged circumferentially around the grain box 65. The rotating frame 651b is hinged to the grain box support frame 651c and the base frame 652 respectively. The fixed end of the rotating cylinder 651a is connected to the base frame 652, and the driving end of the rotating cylinder 651a is movably connected to the grain box support frame 651c. A tilting groove 651d is provided along the length of the tilting frame 651b. One end of the tilting connecting rod 651e is fixed to the base frame 652, and the other end slides within the tilting groove 651d. When the grain box 65 is tilted, the tilting cylinder 651a drives the grain box 65 to tilt outward first. The tilting connecting rod 651e slides from top to bottom within the tilting groove 651d. When the tilting connecting rod 651e reaches the bottom of the tilting groove 651d, the tilting cylinder 651a has not yet reached its maximum stroke.The tilting cylinder 651a continues to push, at which point the grain box 65 tilts along the junction of the tilting frame 651b and the grain box support frame 651c, meaning the feed inlet of the grain box 65 begins to face downwards. When using the grain box 65 to recover grains, the tilting cylinder 651a lifts the grain box 65, adapting it to different carriers for grain unloading and transfer.

[0048] This utility model provides a harvester that meets the harvesting needs of large-scale harvesters. To accommodate large feed rates, the peeling device 1 is equipped with seven sets of peeling rollers 12 to ensure peeling efficiency. An auxiliary cleaning device 3 is included to fully shake the husks and kernels on the cleaning sieve 2, ensuring thorough separation of husks and kernels, improving harvesting cleanliness, and enhancing the harvester's reliability. Furthermore, the auxiliary cleaning device 3 and the cleaning sieve 2 share the same transmission system 4. The auxiliary cleaning device 3 has a simple structure, is easy to disassemble, and the transmission system 4 is highly reliable.

[0049] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A harvester, characterized in that, include: A peeling device for removing the husks from corn ears; A cleaning sieve, located below the peeling device, is used to clean the separated husks and seeds. An auxiliary cleaning device is provided between the peeling device and the cleaning screen to disperse the husks and seeds that fall onto the cleaning screen. The auxiliary cleaning device includes: A feed shaft, which is arranged along the width direction of the harvester; The teeth are arranged in sequence along the extension direction of the feeding shaft, and the feeding shaft includes at least two teeth arranged in parallel in sequence. A first swing arm, one end of which is movably connected to one end of the feed shaft; A second swing arm is disposed opposite to the first swing arm on the feed shaft, and the second swing arm is movably connected to the other side of the feed shaft; The first and second swing arms swing synchronously, driving the conveying shaft to rotate eccentrically, which in turn causes the teeth to distribute the leaves evenly along the setting direction of the cleaning screen.

2. A harvester as described in claim 1, characterized in that, It also includes a transmission system for driving the auxiliary cleaning device, the transmission system comprising: A first pulley is connected to the engine drive to provide power; A drive shaft is provided along the width direction of the harvester, a first pulley is provided on one side of the drive shaft, and a first sprocket is provided on the opposite side of the drive shaft; A transition sprocket is mounted on the harvester frame, and the first sprocket and the transition sprocket are connected by a chain. The first linkage shaft is arranged parallel to the transmission shaft and below the cleaning screen; The second sprocket is connected to the transition sprocket by a chain. The second sprocket is located on one side of the first linkage shaft. The second sprocket rotates synchronously with the transition sprocket, and the first swing arm rotates eccentrically with the second sprocket. The third sprocket is located on the opposite side of the first linkage shaft and rotates synchronously with the first linkage shaft. The second swing arm is located on the opposite side of the first linkage shaft and rotates eccentrically with the third sprocket.

3. A harvester as described in claim 2, characterized in that, The auxiliary cleaning device further includes a first limiting arm and a second limiting arm disposed at both ends of the conveying shaft; a first side portion including a first limiting hole and a second limiting hole are disposed opposite to each other in the length direction of the harvester between the peeling device and the cleaning screen, and the conveying shaft passes through the first limiting hole and the second limiting hole; the other end of the first limiting arm is movably connected to the first upper beam of the first side portion through a connector; the other end of the second limiting arm is movably connected to the second upper beam of the second side portion through a connector.

4. A harvester as described in claim 3, characterized in that, The cleaning screen includes a third swing arm that rotates synchronously with the second sprocket and a fourth swing arm that rotates synchronously with the third sprocket. The third swing arm and the fourth swing arm are respectively disposed at both ends of the second linkage shaft.

5. A harvester as described in claim 4, characterized in that, The cleaning screen also includes a first connecting rod and a second connecting rod that are drivenly connected to the third swing arm and the fourth swing arm. One end of the first connecting rod is connected to one side of the second linkage shaft, and the other end of the first connecting rod is connected to the first lower beam of the first side portion through the connector. One end of the second connecting rod is connected to the opposite side of the second linkage shaft, and the other end of the second connecting rod is connected to the second lower beam of the second side portion through the connector.

6. A harvester as described in claim 5, characterized in that, The cleaning screen also includes a third link and a fourth link symmetrically arranged with the first link and the second link in the length direction of the cleaning screen. One end of the third link is connected to the cleaning screen, and the other end of the third link is connected to the first lower beam of the first side part through the connector.

7. A harvester as described in claim 6, characterized in that, The first connecting rod includes a support plate, a first rotating part, a bending part, and a second rotating part. The support plate is disposed at one end of the first rotating part. The first rotating part and the bending part are fixed by a reinforcing plate. The second rotating part is disposed on the outside of the first lower beam. An opening is provided at the bottom of the second rotating part. The connecting member is disposed on the lower side of the first lower beam and fixed to the opening.

8. A harvester as described in claim 7, characterized in that, The connector includes a hollow shaft, a pin with a fixed opening inside the hollow shaft, an upper bearing and a lower bearing for fixing the hollow shaft, and the connector is fixed to the frame by bolts.

9. A harvester as described in claim 1, characterized in that, It also includes a grain collection device, which includes a grain recovery component located below the cleaning screen and a grain elevator located on the side of the harvester. The grain elevator is connected to the grain recovery component. A grain fan is located on top of the grain elevator for grain impurity removal. A grain channel is connected to the grain fan and the grain elevator for discharging grains into the grain box or ear box.

10. A harvester as described in claim 9, characterized in that, The grain channel includes a cob box channel and a grain box channel. The cob box channel is connected to the cob box, and the opening of the grain box channel is located above the grain box. The bottom plate of the cob box channel is provided with a grain channel opening, which is connected to the grain box channel. The grain box channel and the cob box channel are switched by a baffle. One end of the baffle is rotatably mounted on the bottom plate to block the grain channel opening.

11. A harvester as described in claim 10, characterized in that, One end of the baffle is provided with a rotating component and rotates around the rotating component; the rotating component includes a rotating handle for switching the baffle setting angle and a rotating handle fixing plate, and the rotating handle and the fixing plate are fixed by a pin.

12. A harvester as described in claim 11, characterized in that, The grain bin is located on one side of the harvester, adjacent to the grain elevator. The grain bin is connected to the harvester frame via a base frame. The grain bin is equipped with a drive device that can drive the grain bin to tilt. The drive device includes a tilting cylinder, a tilting frame, and a grain bin support frame.

13. A harvester as described in claim 1, characterized in that, The peeling device includes a star wheel assembly rotatably mounted on the peeling frame for backward feeding of corn ears, and peeling rollers disposed below the star wheel assembly for peeling the ears. The peeling device includes at least seven sets of peeling rollers.

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