Harvester transmission system and harvester

Abstract

According to the harvester transmission system and the harvester, the advancing direction of the harvester serves as the front, and an engine is arranged at the left end of the harvester; the grain unloading transmission system is connected with the engine, the main transmission shaft is arranged in the width direction of the harvester, the first transmission wheel is arranged at the left end of the main transmission shaft, the second transmission wheel is arranged at the right end of the main transmission shaft, and the main transmission shaft rotates synchronously with the first transmission wheel and the second transmission wheel. The grass throwing transmission wheel is arranged on the rear side of the first transmission wheel and connected with the first transmission wheel; the main transmission shaft is sleeved with the lifting transmission wheel, the lifting transmission wheel is located on the side where the first transmission wheel is located, and the lifting transmission wheel and the main transmission shaft integrally rotate to drive the lifting device to work. And the variable speed disc is connected with the second transmission wheel, is arranged on the front side of the second transmission wheel and provides transmission power for the grain cleaning device. According to the harvester transmission system, power is distributed to the left side and the right side of the harvester through the main transmission shaft, loss in the power transmission process is reduced, meanwhile, the harvester is compact in layout, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a harvester transmission system and a harvester. Background Art

[0002] In the existing harvester transmission system, when the engine provides power to the various structures of the harvester, a plurality of transmission shafts arranged along the width direction of the harvester are usually used to transmit the engine power step by step to the components on the front and rear sides of the harvester to realize the operation of the harvester. However, in this process, the power transmitted along the transmission shaft is lost, and there is even a phenomenon of asynchronous transmission on the left and right sides of the harvester, which affects the operating efficiency of the harvester. At the same time, if there are too many transmission shafts, it will affect the spatial layout inside the harvester and the storage capacity of the harvester, and then affect the harvesting energy efficiency and harvesting efficiency of the harvester. Therefore, it is necessary to provide a harvester transmission system and a harvester to overcome the above-mentioned defects. Summary of the invention

[0003] The object of the present invention is to provide a harvester transmission system and a harvester, so as to solve the problems of low transmission efficiency and transmission power loss caused by too many harvester transmission shafts, and at the same time, avoid the problem that the transmission shaft layout affects the internal structure of the harvester.

[0004] According to one aspect of the present invention, a harvester transmission system is provided, in which the engine is arranged at the left end of the harvester with the forward direction of the harvester as the front, and the engine is provided with an output wheel; a grain unloading transmission system is used for grain storage and loading and unloading, and the grain unloading transmission system is connected to the output wheel; a main transmission shaft is arranged along the width direction of the harvester; a first transmission wheel is sleeved on the left end of the main transmission shaft and rotates synchronously with the main transmission shaft, and the first transmission wheel is connected to the output wheel through a belt; a grass throwing transmission wheel is arranged at the rear side of the first transmission wheel, and the grass throwing transmission wheel is connected to the first transmission wheel to drive the grass throwing device The lifting transmission wheel is sleeved on the main transmission shaft and rotates synchronously with the main transmission shaft, and the lifting transmission wheel is arranged at the left end of the main transmission shaft and is adjacent to the first transmission wheel, thereby driving the elevator to work; the second transmission wheel is arranged at the right end of the main transmission shaft and rotates integrally with the main transmission shaft; the speed change disc is connected to the second transmission wheel belt, and the speed change disc is arranged on the upper side of the second transmission wheel to provide power to the threshing drum; the third transmission wheel is connected to the second transmission wheel by a belt; the screening disc assembly rotates synchronously with the third transmission wheel to provide power to the screening disc and the fan.

[0005] In the harvester transmission system, a main transmission shaft is arranged along the width direction of the harvester to transmit power to the left and right sides of the harvester, so as to avoid setting multiple transmission shafts in the harvester, thereby affecting the layout of the harvester and the transmission effect of the harvester.

[0006] Preferably, the grain unloading driving wheel is connected to the output wheel via a belt; the grain unloading sprocket rotates synchronously with the grain unloading driving wheel, and the grain unloading sprocket is connected to a grain unloading gear box to drive the grain unloading gear box to drive the grain unloading device to operate.

[0007] Preferably, the speed change disc is connected to the threshing drum shaft and rotates integrally with the threshing drum shaft, and the other end of the threshing drum shaft is connected to the axial flow box through a coupling; the axial flow box is connected to the separation drum to drive the threshing drum to rotate.

[0008] Preferably, the screening plate assembly includes a fourth transmission wheel for driving the vibrating screen and a fifth transmission wheel for driving the fan; the fourth transmission wheel is connected to the vibrating screen input sprocket to drive the vibrating screen to vibrate; the fifth transmission wheel is connected to the fan input pulley through a belt to drive the fan to rotate.

[0009] Preferably, the screening disc assembly comprises a sixth transmission wheel for driving the bridge, and the sixth transmission wheel rotates synchronously with the fourth transmission wheel and the fifth transmission wheel; the fifth transmission wheel, the fourth transmission wheel and the sixth transmission wheel are arranged in sequence from right to left.

[0010] Preferably, a chopper drive wheel is arranged on the right side of the grass throwing drive wheel, and the chopper drive wheel rotates synchronously with the grass throwing drive wheel; the chopper drive wheel is connected to the chopping roller shaft seat through a belt.

[0011] Preferably, the elevator transmission wheel is connected to the seventh transmission wheel by a belt, and the seventh transmission wheel drives the elevator to operate; an eighth transmission wheel is arranged on the left side of the seventh transmission wheel, and the eighth transmission wheel rotates synchronously with the seventh transmission wheel, and the eighth transmission wheel drives the miscellaneous elevator.

[0012] Preferably, the grain unloading transmission system also includes a grain unloading connecting shaft, the grain unloading driving wheel is sleeved on the grain unloading connecting shaft and rotates integrally with the grain unloading connecting shaft; the grain unloading sprocket is sleeved on the left end of the grain unloading connecting shaft, and the right end of the grain unloading connecting shaft is connected to the frame through a bearing seat; the grain unloading transmission system is arranged at the left end of the harvester and is located on the left side of the main transmission shaft.

[0013] Preferably, the screening disc assembly and the third transmission wheel are arranged in front of the second transmission wheel, and the screening disc assembly and the third transmission wheel are arranged on the same axis and rotate integrally; the sixth transmission wheel is connected to the bridge input pulley belt; the bridge input pulley is arranged in front of the screening disc assembly.

[0014] In this harvester transmission system, the engine power is distributed to the left and right sides of the harvester through the main transmission shaft, driving the various operating mechanisms of the harvester to complete the harvesting of crops. In this process, power transmission is achieved only through a main transmission shaft arranged along the width of the harvester, that is, the number of power transmission levels from the engine to each operating mechanism is reduced, avoiding power transmission loss.

[0015] The present invention also provides a harvester, comprising the harvester transmission system as described above.

[0016] A harvester equipped with this harvester transmission system realizes power distribution on the left and right sides of the harvester through the main transmission shaft, realizes power transmission of the harvester, thereby avoiding power loss of the engine output during the transmission process, improving the power utilization efficiency of the harvester, and further improving the transmission efficiency of the harvester. Using a main transmission shaft can improve the internal space utilization of the harvester, improve the compactness of the harvester's spatial layout, and at the same time, reduce the production cost of the harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0018] Figure 1 A schematic diagram of a harvester provided in accordance with an embodiment of the present invention.

[0019] Figure 2 The left side transmission diagram of the harvester provided in the embodiment of the present invention.

[0020] Figure 3 The right side transmission diagram of the harvester provided in the embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the transmission structure of the harvester provided in the embodiment of the present invention Figure 1 .

[0022] Figure 5 Schematic diagram of the transmission structure of the harvester provided in the embodiment of the present invention Figure 2 .

[0023] Figure 6 for Figure 5 Enlarged view of part A in the middle.

[0024] Figure 7 for Figure 5 Enlarged view of part B in the middle.

[0025] Figure 8 A cross-sectional view of a harvester screening disc assembly provided in accordance with an embodiment of the present invention.

[0026] Description of Figure Numbers:

[0027] 200-harvester; 100-harvester transmission system; 10-engine; 101-output wheel; 20-unloading transmission system; 201-unloading connecting shaft; 202-unloading driving wheel; 203-unloading sprocket; 204-bearing seat; 210-main transmission shaft; 211-first transmission wheel; 221-throwing transmission wheel; 222-chopper transmission wheel; 223-chopping roller shaft seat; 231-lifting transmission wheel; 232-seventh transmission wheel; 233-eighth Transmission wheel; 311-second transmission wheel; 311a-second transmission main wheel; 311b-second transmission secondary wheel; 321-speed change plate; 331-third transmission wheel; 332-screening disc assembly; 333-fourth transmission wheel; 335-sixth transmission wheel; 334-fifth transmission wheel; 336-vibrating screen input sprocket; 337-fan input pulley; 338-bridge input pulley; 341-thresher drum shaft; 342-axial flow box; 343-coupling. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0030] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0034] See also Figures 1 to 6 As shown, this embodiment provides a harvester, which includes a harvesting table, a bridge, an elevator, a granary, a spreading and chopping device, etc., to realize the harvesting operation. During the operation, the harvesting table transports the harvested crops to the rear, and the threshing drum and the cleaning device thresh and clean the grains. The elevator then transports the grains to the granary, and the grain storage and transfer are realized through the grain unloading system. In the harvester provided in this embodiment, the power of the engine 10 is distributed to the left and right sides of the harvester through the main transmission shaft 210, and the power transmission is realized by connecting the transmission wheels to the transmission wheels, thereby reducing the step-by-step distribution of power through the drive shaft arranged along the width direction of the harvester, thereby avoiding the loss of the harvester's transmission power. See Figure 2 , Figure 3 In the harvester transmission system provided in the present embodiment, the engine 10 is arranged on the left side of the harvester with the forward direction of the harvester as the front. It should be noted that the engine 10 can also be arranged on the right side of the harvester. At this time, the layout position of the harvester equipped with a harvesting device is symmetrical to the position when the engine 10 is arranged on the left side of the harvester. The embodiment of the present invention is illustrated by arranging the engine 10 on the left side of the harvester.

[0035] An output wheel 101 is provided on the engine 10 for outputting the power of the engine 10. The grain unloading transmission system 20 for grain storage is directly connected to the output wheel 101, and the grain unloading transmission system 20 is connected to the output wheel 101 of the engine 10 through a belt, and then the power of the engine 10 is transmitted to the grain unloading transmission system 20 to perform grain unloading operations. In the harvester transmission system provided in the embodiment, a main transmission shaft 210 is provided along the width direction of the harvester, and a first transmission wheel 211 is provided at the left end of the main transmission shaft 210, and the first transmission wheel 211 is connected to the output wheel 101 through a belt, and then the first transmission wheel 211 rotates synchronously with the output wheel 101, and the main transmission shaft 210 connected to the first transmission wheel 211 rotates synchronously therewith, and the power of the engine 10 is transmitted from the first transmission wheel 211 to the main transmission shaft 210. The grass throwing transmission wheel 221 is arranged at the rear side of the first transmission wheel 211, and the grass throwing transmission wheel 221 is connected to the first transmission wheel 211 through a belt. During the rotation of the first transmission wheel 211, the grass throwing transmission wheel 221 rotates accordingly, thereby driving the grass throwing device to operate. The lifting transmission wheel 231 is sleeved on the main transmission shaft 210 and is located on one side of the first transmission wheel 211 and rotates synchronously with the main transmission shaft 210. During the rotation of the main transmission shaft 210, the lifting transmission wheel 231 transmits power to the harvester elevator to drive the elevator to operate. The second transmission wheel 311 is arranged at the right end of the main transmission shaft 210 and rotates integrally with the main transmission shaft 210. The power output by the engine 10 is transmitted to the right end of the harvester by the second transmission wheel 311 arranged on the main transmission shaft 210, providing power for the right side transmission of the harvester. In the right side transmission system of the harvester provided in this embodiment, the speed change disc 321 is used to drive the threshing drum to rotate. The second transmission wheel 311 is connected to the third transmission wheel 331 , and the third transmission wheel 331 rotates synchronously with the screening disc assembly 332 as a whole, and the transmission between the second transmission wheel 311 and the third transmission wheel 331 is transmitted through a belt.

[0036] In the harvester transmission system, the power distribution of the engine 10 to the left and right sides of the harvester is achieved by only setting the main transmission shaft 210 in the width direction of the harvester, thereby reducing the power loss of the engine 10 during step-by-step transmission, thereby improving the transmission efficiency of the harvester.

[0037] In the embodiment, for the transmission on the left side of the harvester, the grain unloading transmission system 20 transmits the power for grain storage and loading and unloading, and the grain unloading transmission system 20 is connected to the engine 10. In the harvester provided in this embodiment, the engine 10 directly provides power to the grain unloading transmission system 20, and the grain unloading transmission system 20 is connected to the output wheel 101. Specifically, the grain unloading driving wheel 202 is connected to the output wheel 101 through a belt, and the grain unloading sprocket 203 is arranged on the left side of the grain unloading driving wheel 202 and rotates synchronously with the grain unloading driving wheel 202. The grain unloading sprocket is connected to the grain unloading gear box, drives the grain unloading gear box to rotate, and then drives the grain unloading device to operate. The grain unloading transmission system 20 is arranged in front of the harvester engine 10. In an optional embodiment, the grain unloading transmission system 20 also includes a grain unloading connecting shaft 201, and the grain unloading connecting shaft 201 is arranged parallel to the left side of the main transmission shaft 210. The grain unloading driving wheel 202 is sleeved on the grain unloading connecting shaft 201, and is connected to the output wheel 101 of the engine 10 through the grain unloading belt. When the output wheel 101 drives the grain unloading driving wheel 202 to rotate, the grain unloading connecting shaft 201 and the grain unloading driving wheel 202 rotate synchronously. A grain unloading sprocket 203 is arranged at the left end of the grain unloading connecting shaft 201, and the grain unloading sprocket 203 is connected to the grain unloading gear box to provide transmission power to the grain unloading device. In the grain unloading transmission system 20 of the harvester, for the grain unloading connecting shaft 201, the right side of the grain unloading connecting shaft 201 is fixed to the frame of the harvester by setting a bearing seat 204, so as to realize the synchronous rotation of the grain unloading connecting shaft 201 and the output wheel 101 of the engine 10, thereby providing driving power to the grain unloading transmission system 20.

[0038] Specifically, a chopper drive wheel 222 is arranged on the right side of the grass throwing wheel, and the chopper drive wheel 222 rotates synchronously with the grass throwing drive wheel 221. The chopper drive wheel 222 and the grass throwing drive wheel 221 can be connected by a connecting shaft, so that the chopper drive wheel 222 and the grass throwing drive wheel 221 can rotate integrally; the chopper drive wheel 222 is connected to the chopping roller shaft seat 223 by a belt. The elevator drive wheel is connected to the seventh drive wheel 232 by a belt to drive the harvester elevator to work; an eighth drive wheel 233 is arranged on the left side of the seventh drive wheel 232, and the eighth drive wheel 233 is connected to the waste elevator by a transmission chain. During the threshing process of the threshing drum, part of the threshed waste falls onto the vibrating screen, and the threshed waste is transported to the separation drum for further processing and re-threshing through the waste agitator, so that the cleanliness of the harvested grain is higher.

[0039] Specifically, after the power of the engine 10 is transmitted to the main transmission shaft 210, the power is transmitted to the speed disc 321 through the second transmission wheel 311. The speed disc 321 is sleeved on one end of the threshing drum shaft 341. The rotation of the speed disc 321 drives the threshing drum shaft 341 to rotate; the other end of the threshing drum shaft 341 is connected to the axial flow box 342, and the axial flow box 342 is connected to the threshing drum, thereby driving the threshing drum to rotate. A coupling 343 is also arranged between the axial flow box 342 and the threshing drum shaft 341. The coupling 343 performs shock absorption and buffering during the rapid rotation of the threshing drum, thereby protecting the transmission system of the threshing drum and extending the service life of the equipment. In this embodiment, the speed disc 321 adjusts the rotation speed by changing the rotation radius, thereby changing the rotation speed of the threshing drum shaft 341, and then the rotation speed of the threshing drum changes accordingly.

[0040] For the second transmission wheel 311 in this embodiment, the second transmission wheel 211 includes a second transmission main wheel 311a and a second transmission sub-wheel 311b rotating integrally therewith, wherein the second transmission main wheel 311a is connected to the speed change disc 321 by a belt, and the second transmission sub-wheel 311b is connected to the screening disc assembly.

[0041] The screening disc assembly 332 includes a fourth transmission wheel 333 for driving the vibrating screen and a fifth transmission wheel 334 for driving the fan. The second transmission wheel 311 is connected to the third transmission wheel 331, and the third transmission wheel 331 rotates integrally with the screening disc assembly 332, that is, the third transmission wheel 331 rotates integrally with the fourth transmission wheel 333 and the fifth transmission wheel 334, and then the third transmission wheel 331 and the fourth transmission wheel 333 drive the vibrating screen and the fan to achieve grain cleaning. The vibrating screen mainly achieves grain screening by vibration, and the fan rotates to provide cyclones to screen the grains. During the vibration of the vibrating screen, the fan rotates to remove impurities such as straw on the vibrating screen. In this process, the fourth transmission wheel 333 is a sprocket, which is connected to the vibrating screen input sprocket 336 to drive the vibrating screen connected to the vibrating screen input sprocket 336 to operate; the fifth transmission wheel 334 is connected to the fan input pulley 337 through a belt, thereby driving the fan to rotate. The screening disc assembly 332 also includes a sixth transmission wheel 335 for driving the harvester bridge. The sixth transmission wheel 335 is connected to the harvester bridge input pulley 338 by a belt. During the harvester cleaning process, the sixth transmission wheel 335 rotates synchronously with the third transmission wheel 331, the fourth transmission wheel 333, and the fifth transmission wheel 334.

[0042] In this embodiment, the screening disc assembly 332 is arranged in front of the second transmission wheel 311. When the power of the engine 10 is transmitted to the right side of the harvester, the power is transmitted to the third transmission wheel 331 through the second transmission wheel 311, and then the screening disc assembly 332 is driven to work. The sixth transmission wheel 335 arranged in the screening disc assembly 332 drives the harvester bridge input pulley 338 to rotate through the bridge belt, driving the bridge to work, so as to achieve continuous and stable walking and harvesting of the harvester. In this embodiment, for the screening disc assembly 332 and the third transmission wheel 331, the specific arrangement and setting method is that the fifth transmission wheel 334, the fourth transmission wheel 333, and the sixth transmission wheel 335 are arranged in sequence from right to left. For ordinary harvesters, the bridge is arranged at the connection between the harvester header and the fuselage, and the bridge input pulley 338 is arranged in front of the screening disc assembly 332. As for the screening disc assembly 332 and the third transmission wheel 331, the screening disc assembly 332 and the third transmission wheel 331 are arranged in front of the second transmission wheel 311, and the screening disc assembly 332 and the third transmission wheel 331 are arranged on the same axis and rotate integrally; the sixth transmission wheel 335 is connected with the bridge input wheel belt 338 and the bridge input pulley 338 is arranged in front of the screening disc assembly 332, and the bridge input pulley 338 drives the harvester to cross the bridge. It should be noted that the second transmission wheel 211 connected to the third transmission wheel 331 by a belt is the second transmission sub-wheel 311b, thereby realizing transmission.

[0043] In the harvester provided by the embodiment of the present invention, the power of the engine 10 is distributed to the left and right sides of the harvester through the main transmission shaft 210, and the power is transmitted to the working parts through the transmission wheels arranged on the left and right sides, thereby avoiding power loss during the transmission process. At the same time, only one transmission shaft arranged along the width direction of the harvester and transmitting the power of the engine 10 to the left and right sides of the harvester is used in the whole machine, thereby saving the manufacturing cost of the harvester and making the spatial layout of the harvester compact, which is in line with economic benefits and production benefits.

[0044] It will be apparent to those skilled in the art that various modifications and variations may be made to the above 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 covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A harvester transmission system, characterized in that: include: An engine, with the forward direction of the harvester as the front, the engine is arranged at the left end of the harvester, and the engine is provided with an output wheel; A grain unloading transmission system, which is used for grain storage and loading and unloading, and is connected to the output wheel; A main transmission shaft, the main transmission shaft is arranged along the width direction of the harvester; A first transmission wheel, which is sleeved on the left end of the main transmission shaft and rotates synchronously with the main transmission shaft, and is connected to the output wheel through a belt; A grass throwing transmission wheel, which is arranged at the rear side of the first transmission wheel, and is connected to the first transmission wheel to drive the grass throwing device to rotate; An elevating transmission wheel, which is sleeved on the main transmission shaft and rotates synchronously with the main transmission shaft, and the elevating transmission wheel is arranged at the left end of the main transmission shaft and adjacent to the first transmission wheel, thereby driving the elevator to work; A second transmission wheel, which is disposed at the right end of the main transmission shaft and rotates integrally with the main transmission shaft; A speed change plate, the speed change plate is connected to the second transmission wheel belt, the speed change plate is arranged on the upper side of the second transmission wheel, and is used to provide power to the threshing drum; a third transmission wheel, the third transmission wheel being connected to the second transmission wheel via a belt; A screening disc assembly rotates synchronously with the third transmission wheel to provide power to the screening disc and the fan.

2. A harvester transmission system according to claim 1, characterized in that: The grain unloading transmission system comprises: A grain unloading driving wheel, wherein the grain unloading driving wheel is connected to the output wheel via a belt; A grain unloading sprocket wheel rotates synchronously with the grain unloading driving wheel, and the grain unloading sprocket wheel is connected to a grain unloading gear box to drive the grain unloading gear box to drive the grain unloading device to operate.

3. A harvester transmission system as claimed in claim 1, characterized in that: The speed change disc is connected to the threshing drum shaft and rotates integrally with the threshing drum shaft. The other end of the threshing drum shaft is connected to the axial flow box through a coupling; the axial flow box is connected to the separation drum to drive the threshing drum to rotate.

4. A harvester transmission system as claimed in claim 1, characterized in that: The screening plate assembly includes a fourth transmission wheel for driving the vibrating screen and a fifth transmission wheel for driving the fan; the fourth transmission wheel is connected to the vibrating screen input sprocket to drive the vibrating screen to vibrate; the fifth transmission wheel is connected to the fan input pulley through a belt to drive the fan to rotate.

5. A harvester transmission system as claimed in claim 4, characterized in that: The screening disc assembly comprises a sixth transmission wheel for driving the bridge, and the sixth transmission wheel rotates synchronously with the fourth transmission wheel and the fifth transmission wheel; the fifth transmission wheel, the fourth transmission wheel and the sixth transmission wheel are arranged in sequence from right to left.

6. A harvester transmission system as claimed in claim 1, characterized in that: A chopper drive wheel is arranged on the right side of the grass throwing drive wheel, and the chopper drive wheel rotates synchronously with the grass throwing drive wheel; the chopper drive wheel is connected to the chopping roller shaft seat through a belt.

7. A harvester transmission system as claimed in claim 1, characterized in that: The lifting transmission wheel is connected to the seventh transmission wheel through a belt, and the seventh transmission wheel drives the elevator to operate; the eighth transmission wheel is arranged on the left side of the seventh transmission wheel, and the eighth transmission wheel rotates synchronously with the seventh transmission wheel, and the eighth transmission wheel drives the miscellaneous elevator.

8. A harvester transmission system as claimed in claim 2, characterized in that: The grain unloading transmission system also includes a grain unloading connecting shaft, the grain unloading active wheel is sleeved on the grain unloading connecting shaft and rotates integrally with the grain unloading connecting shaft; the grain unloading sprocket is sleeved on the left end of the grain unloading connecting shaft, and the right end of the grain unloading connecting shaft is connected to the frame through a bearing seat; the grain unloading transmission system is arranged at the left end of the harvester and is located on the left side of the main transmission shaft.

9. A harvester transmission system as claimed in claim 5, characterized in that: The screening disc assembly and the third transmission wheel are arranged in front of the second transmission wheel, and the screening disc assembly and the third transmission wheel are arranged on the same axis and rotate integrally; the sixth transmission wheel is connected to the bridge input wheel belt; the bridge input pulley is arranged in front of the screening disc assembly.

10. A harvester, characterized in that: It comprises a harvester transmission system as described in any one of claims 1 to 9 above.

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