Harvester transmission system and harvester

Abstract

The utility model provides a harvester transmission system and a harvester, which comprise a power output belt wheel, a grain tank transmission system, a first belt wheel set, a main transmission shaft, a grass chopping transmission system, a grain transmission system, a second belt wheel set, an air screen transmission system and a gap bridge input belt wheel, the power output belt wheel is connected with an engine, and the grain tank transmission system comprises a grain tank idle wheel. The grain box idle wheel is connected with the power output belt wheel through a belt, the first belt wheel set is connected with the main transmission shaft, the grain transmission system is connected with the other end, opposite to the first belt wheel set, of the main transmission shaft, and the main transmission shaft drives the grain transmission system to work. According to the harvester transmission system and the harvester, power transmission of a movement mechanism is achieved through the transmission shaft penetrating through the threshing rack of the harvester, the structure is simpler, the cost and maintenance difficulty of the whole harvester are effectively reduced, the problem that straw of harvested materials is wound due to the fact that a plurality of shafts are arranged in the middle of the harvester is solved, and the harvesting efficiency is improved. And material cleaning is influenced.

Description

Technical Field

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

[0002] In the prior art, large harvesters need to transmit engine power to various moving parts, such as the harvesting section, threshing section, cleaning section, fan section, and grass chopping section. In existing harvester transmission schemes, the seed transmission system and other transmission systems are distributed on the same side of the threshing frame, while the engine transmission is on the other side. This results in a complex layout of components on one side and an empty space on the other side. The frame is also offset from the center. Since the transmission is concentrated on one side of the frame, the assembly and maintenance of the entire machine are limited, the operation steps are complicated, and the width is large, which is not conducive to miniaturization of the machine. In addition, the existing scheme uses multiple shafts to pass through the threshing frame of the harvester for power transmission, which has a complex transmission route. Moreover, the multiple shafts in the middle of the harvester easily cause the harvested material straw to be entangled, affecting the material cleaning.

[0003] Therefore, it is necessary to provide a harvester transmission system and a harvester to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to provide a harvester transmission system and a harvester. By rationally designing the transmission system, power transmission of the motion mechanism is achieved through a transmission shaft that passes through the threshing frame of the harvester. The structure of this solution is simpler, effectively reducing the cost and maintenance difficulty of the entire machine. At the same time, it avoids the problem of multiple shafts being set in the middle of the harvester, which causes the entanglement of harvested material straw and affects the material cleaning.

[0005] The purpose of the utility model is to provide a harvester transmission system and a harvester. Through the reasonable design of the transmission system, the threshing and cleaning transmission system and the grain lifting transmission system are placed on both sides of the harvester frame, which is beneficial to the distribution of the center of gravity of the whole machine, expands the assembly and maintenance space on the transmission side, facilitates personnel operation, and reduces the left and right widths of the frame assembly, which is beneficial to the miniaturization of the machine.

[0006] The purpose of the utility model is to provide a harvester transmission system and a harvester, which optimizes the number of pulleys with larger diameters to a minimum, thereby effectively reducing the system weight and component manufacturing costs while achieving the same transmission effect.

[0007] According to one aspect of the present invention, a harvester transmission system and a harvester are provided. With the harvester's forward direction as the front, the system comprises a power output pulley, a grain tank transmission system, a first pulley assembly, a main drive shaft, a grass cutting transmission system, a seed transmission system, a second pulley assembly, a wind screen transmission system, and a bridge input pulley. The power output pulley is located on the left side of the harvester and is connected to the engine via a main output pulley for power output. The grain tank transmission system includes a grain tank idler pulley, which is belt-connected to the power output pulley to drive the grain tank transmission system. The first pulley assembly is located on the same side as the engine and is belt-connected to the power output pulley. The first pulley assembly includes a first main output pulley and a first secondary output pulley that rotate integrally. The main output pulley and the power output pulley are belt-connected.

[0008] The first pulley group is connected to the main transmission shaft to drive the main transmission shaft to rotate, and the main output pulley is connected to the grass-chopping transmission system through a belt, thereby driving the grass-chopping transmission system to work, and the grain transmission system is connected to the other end of the main transmission shaft opposite to the first pulley group, and the main transmission shaft drives the grain transmission system to work, and the second pulley group is connected to the auxiliary output pulley through a belt, and the second pulley group includes a second main output pulley and a second auxiliary output pulley that rotate as a whole, and the second main output pulley is connected to the first auxiliary output pulley through a belt, and the wind screen transmission system includes a wind screen wheel group, and the wind screen wheel group is connected to the second auxiliary output pulley through a belt drive, thereby driving the wind screen transmission system to complete the crop cleaning work, and the bridge input pulley is connected to the second main output pulley through a belt drive to drive the harvester to cross the bridge.

[0009] Through the rational design of the transmission system of the harvester, the utility model realizes the power transmission of all the moving mechanisms by a transmission shaft penetrating the threshing frame of the harvester. The utility model has a simpler structure, effectively reduces the cost and maintenance difficulty of the harvester, and avoids the problem of entanglement of harvested material straw caused by multiple shafts arranged in the middle of the harvester, which affects the material cleaning.

[0010] The bridge input pulley and the second main output pulley are connected through a belt drive to drive the harvester to cross the bridge, thereby realizing the transportation of harvested crops across the bridge and the rotation of the reel.

[0011] Preferably, the grain transmission system includes a third pulley assembly, a continuously variable speed driven pulley, and a grain lifting transmission system. The third pulley assembly is connected to the main drive shaft and rotates therewith. The third pulley assembly includes a third main output pulley and a third secondary output pulley. The continuously variable speed driven pulley and the third main output pulley are connected by a belt to drive the threshing drum to rotate. The grain lifting transmission system includes a miscellaneous lifting pulley, which is connected to the third secondary output pulley by a belt to output power to drive the grain lifting transmission system. The continuously variable speed driven pulley can achieve different speed requirements for the threshing drum when harvesting different crops, thereby meeting the threshing needs of various crops.

[0012] Preferably, the grain elevator transmission system further comprises a miscellaneous auger, a B sprocket, a C sprocket, a grain auger, a miscellaneous elevator, and a grain elevator. The miscellaneous elevator pulley is connected to one end of the miscellaneous auger to drive the miscellaneous auger to rotate. The B sprocket is connected to the other end of the miscellaneous auger and rotates with the miscellaneous auger. The C sprocket is chain-drivenly connected to the B sprocket. The C sprocket is connected to one end of the grain auger to drive the grain auger to rotate. The miscellaneous elevator is chain-drivenly connected to the miscellaneous auger. The grain elevator is chain-drivenly connected to the other end of the grain auger. The miscellaneous auger and the grain auger are arranged in a left-right direction of the harvester, with the grain auger placed in front of the miscellaneous auger.

[0013] Preferably, the debris elevator includes an A sprocket, an E sprocket and a debris elevator chain. The A sprocket is coaxially arranged with the debris elevator pulley and rotates synchronously with the debris elevator pulley. The A sprocket is close to the harvester side relative to the debris elevator pulley, and the E sprocket is placed above the A sprocket. One end of the debris elevator chain is sleeved on the A sprocket and the other end is sleeved on the E sprocket; the grain elevator includes a D sprocket placed on the other end of the grain agitator, and a grain elevator chain with one end sleeved on the D sprocket.

[0014] Preferably, the grain lifting system also includes an F sprocket, a G sprocket and a miscellaneous auxiliary auger. The F sprocket is coaxially arranged with the E sprocket and rotates synchronously with the E sprocket. The G sprocket is chain-drivenly connected to the F sprocket, and the miscellaneous auger is connected to the G sprocket and driven by the G sprocket.

[0015] Preferably, the grain tank transmission system also includes a grain tank pulley, a first grain tank sprocket, a bottom gear box wheel, a second grain tank sprocket, a grain tank agitator wheel and a grain tank horizontal agitator. The grain tank pulley is connected to the grain tank idler by a belt, the grain tank sprocket is coaxially arranged with the grain tank pulley and rotates synchronously with the grain tank pulley, the bottom gear box wheel is connected to the grain tank sprocket by a chain transmission, the second grain tank sprocket is coaxially arranged with the bottom gear box wheel and the bottom gear box wheel rotates synchronously, the grain tank agitator wheel is connected to the second grain tank sprocket by a chain transmission, and the grain tank agitator wheel is connected to the grain tank horizontal agitator to drive the grain tank horizontal agitator to rotate.

[0016] Preferably, the wind screen wheel group includes an integrally rotating wind screen input wheel and a wind screen output wheel, the wind screen input wheel and the wind screen output wheel are connected by a connecting assembly, the wind screen input wheel is connected to the second pair of output pulleys by a belt drive, and the wind screen output wheel includes an active stepless speed regulating wheel and a vibrating screen active wheel.

[0017] Preferably, the wind screen drive system also includes a driven continuously variable speed wheel connected to the active continuously variable speed wheel via a belt drive, and a vibrating screen wheel connected to the vibrating screen driving wheel via a chain drive. The connection between the driven continuously variable speed wheel and the active continuously variable speed wheel enables stepless fan speed regulation, allowing for varying airflow rates in the cleaning system when harvesting different crops, thereby improving the cleanliness of air-separated crop grains. The vibrating screen wheel is connected to the vibrating screen driving wheel to separate the crop grains from the crushed straw, which is then blown out of the machine.

[0018] Preferably, the grass chopping transmission system includes a grass chopping wheel connected to the main output pulley via a belt, a grass chopping pulley connected to the grass chopping wheel assembly via a belt, and a grass chopping blade assembly connected to the grass chopping pulley and rotating synchronously with the grass chopping pulley. Through the above transmission method, straw chopping and returning to the field can be achieved.

[0019] Preferably, the grain tank transmission system also includes an inclined auger connected to the bottom gear box wheel through a bevel gear set and rotating with the bottom gear box, and a grain unloading auger connected to the inclined auger.

[0020] Preferably, the first pulley group also includes a connecting seat for connecting the first main output pulley and the first secondary output pulley, the first main output pulley includes an input part and an output part, the input part is connected to the power output pulley through a belt, and the output part is connected to the grass-chopping wheel through a belt.

[0021] Preferably, the second main output pulley includes a pulley input portion and a pulley output portion, the pulley input portion is connected to the first secondary output pulley via a belt, and the pulley output portion is connected to the bridge input pulley via a belt.

[0022] Preferably, a harvester includes an engine, a grain tank assembly, a bridge assembly, a threshing assembly, and a grass chopping assembly, wherein the grain tank assembly is placed in front of the engine, the bridge assembly is placed in front of the grain tank assembly, the grass chopping assembly is placed below the engine, and the threshing assembly is placed in front of the grass chopping assembly.

[0023] Preferably, a harvester comprises the harvester transmission system of the above-mentioned solution.

[0024] The utility model provides a harvester transmission system and a harvester. By rationally designing the transmission system, a transmission shaft passes through the threshing frame of the harvester, thereby realizing power transmission to all motion mechanisms. The utility model has a simpler structure, effectively reducing the overall cost and maintenance difficulty of the harvester, and at the same time avoiding the problem of multiple shafts being arranged in the middle of the harvester causing entanglement of harvested material straw, thereby affecting material cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a schematic diagram of the overall transmission system of a harvester from one perspective;

[0027] Figure 2 This is a schematic diagram of the local transmission system on the left side of the harvester;

[0028] Figure 3 This is the overall schematic diagram of the harvester transmission system from another perspective;

[0029] Figure 4 This is a schematic diagram of the local transmission system on the right side of the harvester;

[0030] Figure 5 Schematic diagram of the wind screen wheel group;

[0031] Figure 6 Schematic diagram of the first pulley assembly;

[0032] Figure 7 Schematic diagram of the second pulley assembly;

[0033] Figure 8 This is a schematic diagram of the harvester as a whole.

[0034] Description of Figure Numbers:

[0035] 1. Engine; 2. Grain tank assembly; 3. Bridge assembly; 4. Threshing assembly; 5. Grass chopping assembly; 20. Main drive shaft; 101. Grain tank idler; 102. Grain tank pulley; 103. First grain tank sprocket; 104. Bottom gearbox pulley; 105. Second grain tank sprocket; 106. Grain tank auger wheel; 107. Grain tank horizontal auger; 108. Tilt auger; 109. Unloading auger; 110. Power output Pulley; 111, main output pulley; 210, first pulley group; 210a, first active output pulley; 210b, first auxiliary output pulley; 210c, connecting seat; 2101, input portion; 2102, output portion; 220, second pulley group; 220a, second main output pulley; 220b, second auxiliary output pulley; 2201, pulley input portion; 2202, pulley output portion; 230, grass cutting pulley ; 231, grass cutting pulley; 232, grass cutting blade assembly; 240, wind screen wheel group; 240a, wind screen input wheel; 240b, wind screen output wheel; 240c, connecting assembly; 2401 active stepless speed regulating wheel; vibrating screen active wheel; 241, driven stepless speed regulating wheel; 242, vibrating screen wheel; 250, third pulley group; 251, third main output pulley; 252, third auxiliary output pulley; 260, stepless Speed-changing driven wheel; 270, miscellaneous lifting pulley; 271, A sprocket; 272, miscellaneous auger; 273, miscellaneous lifting chain; 274, E sprocket; 275, F sprocket; 276, G sprocket; 277, miscellaneous auxiliary auger; 280, B sprocket; 281, C sprocket; 282, grain auger; 283, D sprocket; 284, grain lifting chain; 100, harvester transmission system; 200, harvester. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0037] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0038] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0039] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0040] 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.

[0041] 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 drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0042] The embodiment for implementing the present invention will be described based on the accompanying drawings. It should be noted that in the following description, the direction of F is set to "front" (refer to Figure 1 、 Figure 4 、 Figure 8 ), set the direction of B to "back" (refer to Figure 1 、 Figure 4 、 Figure 8 ).

[0043] See also Figures 1 to 7 As shown, this embodiment provides a harvester transmission system 100 and a harvester, which, with the forward direction of the harvester as the front, includes a power output pulley 110, a grain tank transmission system, a first pulley group 210, a main transmission shaft 20, a grass cutting transmission system, a grain transmission system, a second pulley group 220, a wind screen transmission system and a bridge input pulley.

[0044] The power output pulley 110 is placed on the left side of the harvester and is connected to the engine 1 through the main output pulley 111 for power output. The grain tank transmission system includes a grain tank idler pulley 101. The grain tank idler pulley 101 is connected to the power output pulley 110 by a belt to drive the grain tank transmission system to work. The first pulley group 210 is placed on the same side as the engine 1 and is connected to the power output pulley 110 by a belt. The first pulley group 210 includes a first main output pulley and a first auxiliary output pulley 210a, a first active output pulley, which rotate as a whole; 210b, the main output pulley is connected to the power output pulley 110 by a belt.

[0045] The first pulley group 210 is connected to the main transmission shaft 20 to drive the main transmission shaft 20 to rotate, and the main output pulley is connected to the grass-chopping transmission system through a belt, thereby driving the grass-chopping transmission system to work, and the grain transmission system is connected to the other end of the main transmission shaft 20 relative to the first pulley group 210. The main transmission shaft 20 drives the grain transmission system to work, and the second pulley group 220 is connected to the auxiliary output pulley through a belt. The second pulley group 220 includes a second main output pulley 220a and a second auxiliary output pulley 220b that rotates as a whole, and the second main output pulley 220a is connected to the first active output pulley of the first auxiliary output pulley 210a; 210b is connected by a belt, and the wind screen transmission system includes a wind screen wheel group 240, and the wind screen wheel group 240 is connected to the second auxiliary output pulley 220b through belt transmission, thereby driving the wind screen transmission system to complete the crop cleaning work, and the bridge input pulley is connected to the second main output pulley 220a through belt transmission to drive the bridge work of the harvester.

[0046] Through this application, the transmission system of the harvester is rationally designed, and a transmission shaft is used to penetrate the threshing frame of the harvester 200 to realize the power transmission of the motion mechanism. The structure of this application is simpler, which effectively reduces the cost and maintenance difficulty of the harvester 200. At the same time, it avoids the problem of multiple shafts being set in the middle of the harvester 200 causing the harvested material straw to be entangled, affecting the material cleaning.

[0047] The bridge input pulley is connected to the second main output pulley 220a through a belt drive, which is used to drive the bridge operation of the harvester 200, thereby realizing bridge transportation of harvested crops and rotation of the reel.

[0048] The grain transmission system includes a third pulley assembly 250, a continuously variable speed driven pulley 260, and a grain lifting transmission system. The third pulley assembly is connected to the main drive shaft 20 and rotates therewith. The third pulley assembly 250 includes a third main output pulley 251 and a third secondary output pulley 252. The continuously variable speed driven pulley 260 and the third main output pulley 251 are connected by a belt to drive the threshing drum. The grain lifting transmission system includes a miscellaneous lifting pulley 270, which is connected to the third secondary output pulley 252 by a belt to output power to drive the grain lifting transmission system. The continuously variable speed driven pulley 260 can achieve different threshing drum speed requirements for different crops, thereby meeting the threshing needs of various crops.

[0049] See also Figure 3 and Figure 4 As shown, the grain elevator transmission system also includes a waste auger 272, a B sprocket 280, a C sprocket 281, a grain auger 282, a waste elevator, and a grain elevator. The waste elevator pulley 270 is connected to one end of the waste auger 272 to drive the waste auger 272 to rotate. The B sprocket 280 is connected to the other end of the waste auger 272 and rotates with the waste auger 272. The C sprocket 281 is connected to the B sprocket 280 through a chain transmission. The C sprocket 281 is connected to one end of the grain auger 282 to drive the grain auger 282 to rotate. The waste elevator is connected to the waste auger 272 through a chain transmission. The grain elevator is connected to the other end of the grain auger 282 through a chain transmission. The waste auger 272 and the grain auger 282 are arranged in a left-right direction of the harvester 200, with the grain auger 282 placed in front of the waste auger 272.

[0050] The debris elevator includes an A sprocket 271, an E sprocket 274 and a debris elevator chain 273. The A sprocket 271 is coaxially arranged with the debris elevator pulley 270 and rotates synchronously with the debris elevator pulley 270. The A sprocket 271 is close to the harvester side relative to the debris elevator pulley 270. The E sprocket 274 is placed above the A sprocket 271. One end of the debris elevator chain 273 is sleeved on the A sprocket 271 and the other end is sleeved on the E sprocket 274; the grain elevator includes a D sprocket 283 placed on the other end of the grain agitator 282, and a grain elevator chain 284, one end of which is sleeved on the D sprocket 283.

[0051] The grain lifting system also includes an F sprocket 275, a G sprocket 276 and a miscellaneous auxiliary auger 277. The F sprocket 275 is coaxially arranged with the E sprocket 274 and rotates synchronously with the E sprocket 274. The G sprocket 276 is chain-connected to the F sprocket 275. The miscellaneous auger 272 is connected to the G sprocket 276 and driven by the G sprocket 276.

[0052] The grain tank transmission system also includes a grain tank pulley 102, a first grain tank sprocket 103, a bottom gear box wheel 104, a second grain tank sprocket 105, a grain tank agitator wheel 106 and a grain tank horizontal agitator 107. The grain tank pulley 102 is connected to the grain tank idler wheel 101 by a belt, the grain tank sprocket is coaxially arranged with the grain tank pulley 102 and rotates synchronously with the grain tank pulley 102, the bottom gear box wheel 104 is connected to the grain tank sprocket by a chain transmission, the second grain tank sprocket 105 is coaxially arranged with the bottom gear box wheel 104 and the bottom gear box wheel 104 rotates synchronously, the grain tank agitator wheel 106 is connected to the second grain tank sprocket 105 by a chain transmission, and the grain tank agitator wheel 106 is connected to the grain tank horizontal agitator 107 to drive the grain tank horizontal agitator 107 to rotate.

[0053] The grain tank transmission system also includes an inclined auger 108 connected to the bottom gear box wheel 104 via a bevel gear set (not shown) and rotating with the bottom gear box, and a grain unloading auger 109 connected to the inclined auger 108.

[0054] The wind screen wheel group 240 includes a wind screen input wheel 240a and a wind screen output wheel 240b that rotate as a whole. The wind screen input wheel 240a and the wind screen output wheel 240b are connected by a connecting component 240c. The wind screen input wheel 240a is connected to the second auxiliary output pulley 220b through a belt drive. The wind screen output wheel 240b includes an active stepless speed regulation wheel and a vibrating screen active wheel.

[0055] The wind screen drive system also includes a driven continuously variable speed wheel 2401 connected to the active continuously variable speed wheel via a belt drive; a vibrating screen drive wheel 241; and a vibrating screen wheel 242 connected to the vibrating screen drive wheel via a chain drive. The connection between the driven continuously variable speed wheel 2401, the active continuously variable speed wheel, the vibrating screen drive wheel 241, and the active continuously variable speed wheel enables stepless fan speed regulation, allowing for varying airflow rates when harvesting different crops and improving the cleanliness of air-selected crop grains. The vibrating screen wheel 242, connected to the vibrating screen drive wheel, separates crop grains from straw fragments, blowing the straw fragments out of the machine.

[0056] The grass chopping transmission system includes a grass chopping wheel 230 connected to the main output pulley via a belt, a grass chopping belt wheel 231 connected to the grass chopping belt wheel 230 via a belt, and a grass chopping blade assembly 232 connected to the grass chopping belt wheel 231 and rotating synchronously with the grass chopping belt wheel 231. Through the above transmission method, straw chopping and returning to the field can be achieved.

[0057] The first pulley assembly 210 further includes a first primary output pulley and a first secondary output pulley 210a for connecting the first primary output pulley and the first secondary output pulley

[0058] The first active output pulley; the connecting seat 210c of 210b, the first main output pulley includes an input part 2101 and an output part 2102, the input part 2101 is connected to the power output pulley 110 through a leather, and the output part 2102 is connected to the grass-chopping wheel 230 through a belt.

[0059] The second main output pulley 220a includes a pulley input part 2201 and a pulley output part 2202. The pulley input part 2201 is connected to the first active output pulley 210a; 210b through a belt, and the pulley output part 2202 is connected to the bridge input pulley through a belt.

[0060] See also Figure 8 As shown, this embodiment provides a harvester 200, including an engine 1, a grain tank assembly 2, a bridge assembly 3, a threshing assembly 4, a grass chopping assembly 5, and the harvester transmission system 100 of the above embodiment, the grain tank assembly 2 is placed in front of the engine 1, the bridge assembly 3 is placed in front of the grain tank assembly 2, the grass chopping assembly 5 is placed below the engine 1, and the threshing assembly 4 is placed in front of the grass chopping assembly 5.

[0061] This embodiment involves a belt drive or a chain drive. It is obvious to those skilled in the art that, according to design requirements, the belt drive can also replace the chain drive, and the chain drive can also be replaced by the belt drive.

[0062] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A harvester transmission system, with the harvester's forward direction as the front, characterized in that: include: A power output pulley is placed on the left side of the harvester and is connected to the engine through a main output wheel for power output; A grain tank transmission system, the grain tank transmission system comprising a grain tank idler wheel, the grain tank idler wheel being connected to a power output pulley belt to drive the grain tank transmission system; a first pulley assembly, the first pulley assembly being placed on the same side as the engine and being connected to the power output pulley via a belt, the first pulley assembly comprising a first main output pulley and a first secondary output pulley that rotate as one, the main output pulley being connected to the power output pulley via a belt; A main transmission shaft, wherein the first pulley set is connected to the main transmission shaft to drive the main transmission shaft to rotate; The grass-chopping transmission system, wherein the main output pulley is connected to the grass-chopping transmission system via a belt, thereby driving the grass-chopping transmission system to work; A grain transmission system, wherein the grain transmission system is connected to the other end of the main transmission shaft opposite to the first pulley assembly, and the main transmission shaft drives the grain transmission system to work; a second pulley assembly, wherein the second pulley assembly is connected to the secondary output pulley via a belt, the second pulley assembly comprising a second main output pulley and a second secondary output pulley that rotate integrally, the second main output pulley being connected to the first secondary output pulley via a belt; A wind screen transmission system, comprising a wind screen wheel assembly, wherein the wind screen wheel assembly is connected to the second output pulley via a belt drive, thereby driving the wind screen transmission system to complete the crop cleaning work; The bridge input pulley is connected to the second main output pulley through a belt drive to drive the harvester to cross the bridge.

2. A harvester transmission system according to claim 1, characterized in that: The grain transmission system comprises: a third pulley group, the third pulley group being connected to the main transmission shaft and rotating therewith, the third pulley group comprising a third main output pulley and a third auxiliary output pulley; a continuously variable speed driven wheel, wherein the continuously variable speed driven wheel is connected to the third main output pulley via a belt to drive the threshing drum to rotate; A grain lifting transmission system includes a miscellaneous lifting pulley, and the miscellaneous lifting pulley is connected to the third auxiliary output pulley through a belt to output power to drive the grain lifting transmission system to work.

3. A harvester transmission system according to claim 2, characterized in that: The grain lifting transmission system also includes: A miscellaneous auger, wherein the miscellaneous lifting pulley is connected to one end of the miscellaneous auger to drive the miscellaneous auger to rotate; A sprocket B, the sprocket B is connected to the other end of the miscellaneous auger and rotates with the miscellaneous auger; A C sprocket, the C sprocket is chain-drivenly connected to the B sprocket; A grain auger, wherein the C sprocket is connected to one end of the grain auger to drive the grain auger to rotate; A miscellaneous waste elevator, the miscellaneous waste elevator being in transmission connection with the miscellaneous waste auger chain; A grain elevator, wherein the grain elevator is connected to the other end of the grain auger via a chain drive; The miscellaneous auger and the grain auger are extended and arranged along the left and right directions of the harvester, and the grain auger is placed in front of the miscellaneous auger.

4. A harvester transmission system according to claim 3, characterized in that: The debris elevator includes an A sprocket, an E sprocket and a debris elevator chain. The A sprocket is coaxially arranged with the debris elevator pulley and rotates synchronously with the debris elevator pulley. The A sprocket is close to the harvester side relative to the debris elevator pulley, and the E sprocket is placed above the A sprocket. One end of the debris elevator chain is sleeved on the A sprocket and the other end is sleeved on the E sprocket; the grain elevator includes a D sprocket placed on the other end of the grain agitator, and a grain elevator chain with one end sleeved on the D sprocket.

5. A harvester transmission system according to claim 4, characterized in that: The grain lifting system also includes an F sprocket, a G sprocket and a miscellaneous auxiliary auger. The F sprocket is coaxially arranged with the E sprocket and rotates synchronously with the E sprocket. The G sprocket is chain-drivenly connected to the F sprocket. The miscellaneous auger is connected to the G sprocket and driven by the G sprocket.

6. A harvester transmission system according to claim 5, characterized in that: The grain tank transmission system also includes: A grain tank pulley, wherein the grain tank pulley is connected to the grain tank idler pulley via a belt; a first grain tank sprocket, the grain tank sprocket being coaxially arranged with the grain tank pulley and rotating synchronously with the grain tank pulley; A bottom gear box wheel, wherein the bottom gear box wheel is connected to the grain tank sprocket via a chain drive; a second grain tank sprocket, the second grain tank sprocket being coaxially arranged with the bottom gear box wheel and the bottom gear box wheel rotating synchronously; A grain tank auger wheel, wherein the grain tank auger wheel is connected to the second grain tank sprocket via a chain drive; A grain tank horizontal auger, wherein the grain tank auger wheel is connected to the grain tank horizontal auger to drive the grain tank horizontal auger to rotate.

7. A harvester transmission system according to claim 6, characterized in that: The wind screen wheel group includes a wind screen input wheel and a wind screen output wheel that rotate as a whole. The wind screen input wheel and the wind screen output wheel are connected by a connecting assembly. The wind screen input wheel is connected to the second auxiliary output pulley through a belt drive. The wind screen output wheel includes an active stepless speed regulating wheel and a vibrating screen active wheel.

8. A harvester transmission system according to claim 7, characterized in that: The wind screen transmission system also includes a driven stepless speed regulating wheel connected to the active stepless speed regulating wheel through a belt transmission, and a vibrating screen wheel connected to the vibrating screen driving wheel through a chain transmission.

9. A harvester transmission system according to claim 8, characterized in that: The grass-chopping transmission system includes a grass-chopping wheel connected to the main output pulley via a belt, a grass-chopping pulley connected to the grass-chopping wheel group via a belt, and a grass-chopping blade assembly connected to the grass-chopping pulley and rotating synchronously with the grass-chopping pulley.

10. A harvester transmission system according to claim 9, characterized in that: The grain tank transmission system also includes an inclined auger connected to the bottom gear box wheel through a bevel gear set and rotating with the bottom gear box, and a grain unloading auger connected to the inclined auger.

11. A harvester transmission system according to claim 10, characterized in that: The first pulley group also includes a connecting seat for connecting the first main output pulley and the first secondary output pulley. The first main output pulley includes an input part and an output part. The input part is connected to the power output pulley through a belt, and the output part is connected to the grass-chopping wheel through a belt.

12. A harvester transmission system according to claim 11, characterized in that: The second main output pulley includes a pulley input portion and a pulley output portion, the pulley input portion is connected to the first secondary output pulley via a belt, and the pulley output portion is connected to the bridge input pulley via a belt.

13. A harvester, characterized in that: Including the harvester transmission system according to claim 1 or claim 12.

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