Combine harvester transmission structure and combine harvester

Abstract

The invention relates to the technical field of agricultural equipment, in particular to a combine harvester transmission structure and a combine harvester. The transmission structure of the combine harvester comprises an engine power output shaft which transmits power of an engine to the downstream; the engine power output shaft is in transmission connection with the main intermediate shaft; the main intermediate shaft is in transmission connection with the cleaning transmission shaft; the cleaning transmission shaft comprises a cleaning right side shaft and a cleaning left side shaft which are connected with each other; the right cleaning shaft is in transmission connection with the fan, the left cleaning shaft is in transmission connection with the seed elevator, and the seed elevator is in transmission connection with the impurity elevator and the screen box. In the transmission structure of the combine harvester, the cleaning right side shaft and the cleaning left side shaft jointly bear loads, the cleaning transmission shaft transmits power to the fan and the seed elevator, the loads of the cleaning transmission shaft can be reduced, and the transmission structure of the cleaning transmission shaft is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural equipment, and in particular to a transmission structure of a combine harvester and the combine harvester. Background Art

[0002] A combine harvester is a combined machine for harvesting crops. It is a harvesting machine that can complete the processes of harvesting, threshing, separating stems, removing debris, chopping and scattering straw of cereal crops at one time. It obtains grains directly from the field, saving manpower and material resources and greatly reducing the burden on farmers.

[0003] Large grain combine harvesters have different transmission routes. Due to the limitations of the overall layout, the failure rate of the transmission device of key working parts is often high, which brings high maintenance costs to enterprises and customers.

[0004] The transmission of a combine harvester mainly includes main transmission, cutting table transmission, drum transmission, screen box transmission, pushing and auger transmission, fan transmission, elevator transmission, grain unloading transmission, grass discharge transmission, chopping transmission, etc. There are many transmission branches and the transmission structure is complex. The transmission of key parts often fails such as slipping, burning, and breaking, causing the combine harvester to fail to work, seriously affecting customer profits.

[0005] In the related technology, the engine of the combine harvester transmits power to the cleaning transmission half shaft, and the cleaning rotating half shaft transmits power to the fan, seed elevator and screen box, etc. The transmission of the cleaning transmission half shaft is complex and the load is large, which can easily cause shaft breakage, belt damage, chain breakage and other related failures. Summary of the invention

[0006] The purpose of the present invention is to provide a combine harvester transmission structure and a combine harvester, so as to solve the technical problems existing in the prior art that the transmission of the cleaning transmission half-shaft is complex, the load is large, and it is easy to cause shaft breakage, belt damage, chain breakage and other related faults.

[0007] The present invention provides a transmission structure of a combine harvester, comprising: an engine power output shaft, which transmits the power of the engine to the downstream; a main intermediate shaft, the engine power output shaft is transmission-connected to the main intermediate shaft; a cleaning transmission shaft, the main intermediate shaft is transmission-connected to the cleaning transmission shaft; the cleaning transmission shaft comprises a cleaning right side shaft and a cleaning left side shaft which are connected to each other; the cleaning right side shaft is transmission-connected to a fan, the cleaning left side shaft is transmission-connected to a seed material elevator, and the seed material elevator is transmission-connected to a debris elevator and a screen box respectively.

[0008] The engine power output shaft transmits the engine power to the main intermediate shaft, and the main intermediate shaft transmits the power to the cleaning transmission shaft, that is, to the cleaning right shaft and the cleaning left shaft; the cleaning right shaft transmits the power to the fan, and the fan works; the cleaning left shaft transmits the power to the seed material elevator, and the seed material elevator can transmit the power to the miscellaneous elevator and the screen box while working, and the miscellaneous elevator and the screen box work separately. In the transmission structure of the combine harvester of the present invention, the cleaning right shaft and the cleaning left shaft share the load, and the cleaning transmission shaft transmits the power to the fan and the seed material elevator, which can reduce the load of the cleaning transmission shaft, making the transmission structure of the cleaning transmission shaft simple, and can reduce the risk of related failures such as shaft breakage, belt damage, and chain breakage.

[0009] Furthermore, the cleaning right shaft and the cleaning left shaft are integrally formed, and in the width direction of the fuselage of the combine harvester, the cleaning transmission shaft extends from one side of the fuselage to the other side of the fuselage.

[0010] Furthermore, the left side of the main intermediate shaft is transmission connected to the bridge transmission shaft, and the bridge transmission shaft is transmission connected to the left side and the right side of the cutting table respectively; the right side of the main intermediate shaft is transmission connected to the grass removal wheel, the pushing auger and the cleaning transmission shaft respectively; the grass removal wheel is transmission connected to the drum and the chopper respectively.

[0011] Furthermore, the engine power output shaft is also transmission connected to the grain unloading intermediate shaft, the grain unloading intermediate shaft is transmission connected to the unloading barrel transmission box, the unloading barrel transmission box is transmission connected to the left side of the front bottom auger of the grain tank, the left side of the front bottom auger of the grain tank is transmission connected to the right side of the front bottom auger of the grain tank, and the right side of the front bottom auger of the grain tank is transmission connected to the rear bottom auger of the grain tank.

[0012] Furthermore, the engine power output shaft is connected to the main intermediate shaft through a main clutch belt drive assembly, the left side of the intermediate shaft is connected to the bridge drive shaft through a bridge clutch belt drive assembly, and the bridge drive shaft is connected to the cutter through a cutter belt drive assembly; the engine power output shaft is connected to the grain unloading intermediate shaft through a grain unloading clutch belt drive assembly.

[0013] Furthermore, the right side of the intermediate shaft is connected to the grass discharge wheel shaft of the grass discharge wheel through a grass discharge belt transmission assembly, the grass discharge wheel shaft is connected to the drum shaft of the drum through a drum speed change belt transmission assembly, and the grass discharge wheel shaft is connected to the chopping shaft of the chopper through a chopping belt transmission assembly; the right side of the intermediate shaft is connected to the pushing auger shaft of the pushing auger through a pushing auger belt transmission assembly; the right side of the intermediate shaft is connected to the cleaning drive shaft through a cleaning belt transmission assembly, the right side cleaning shaft is connected to the fan through a fan speed change belt transmission assembly, the left side cleaning shaft is connected to the seed material elevator shaft of the seed material elevator through a seed material lifting belt transmission assembly, the seed material elevator shaft is connected to the miscellaneous elevator through a miscellaneous chain transmission assembly, and the seed material elevator shaft is connected to the screen box through a screen box belt transmission assembly.

[0014] The present invention provides a combine harvester, comprising the above-mentioned combine harvester transmission structure.

[0015] Furthermore, the combine harvester also includes a belt tensioning structure; the belt tensioning structure includes a fixed tensioning wheel, a movable tensioning wheel and a tensioning adjustment member; the number of the fixed tensioning wheels is multiple, including a first fixed tensioning wheel and a second fixed tensioning wheel, the first fixed tensioning wheel is used to abut against the outer wall of the belt, the second fixed tensioning wheel is used to abut against the inner wall of the belt, and the movable tensioning wheel is used to abut against the outer wall of the belt; one of the first fixed tensioning wheel and the movable tensioning wheel is used to be arranged close to the driven pulley; the tensioning adjustment member is connected to the movable tensioning wheel to drive the movable tensioning wheel to move.

[0016] Furthermore, the first fixed tension wheel, the second fixed tension wheel and the movable tension wheel are used to be located on the same side of the belt; the other of the first fixed tension wheel and the movable tension wheel is used to be arranged close to the driving pulley; the first fixed tension wheel and the movable tension wheel are arranged closer to the other side of the belt than the second fixed tension wheel.

[0017] Furthermore, the combine harvester comprises a single-row grass discharge wheel, and the grass discharge wheel is drivingly connected to the chopper via a primary chopping belt transmission assembly.

[0018] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a perspective view of a combine harvester from a first viewing angle according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 a perspective view of a second viewing angle of the combine harvester shown;

[0022] Figure 3 for Figure 1 The structural schematic diagram of the middle belt tensioning structure of the combine harvester shown;

[0023] Figure 4 The transmission route framework diagram of the transmission structure of the combine harvester according to the embodiment of the present invention.

[0024] Icons: 1-engine power output shaft; 2-main intermediate shaft; 3-cleaning drive shaft; 4-bridge drive shaft; 5-unloading intermediate shaft; 6-cutting table shaft; 7-grass discharge wheel shaft; 8-drum shaft; 9-shredder shaft; 10-pushing auger shaft; 20-fan shaft; 30-seed material elevator shaft; 40-residue elevator shaft; 50-screen box shaft; 60-main clutch belt drive assembly; 70-bridge clutch belt drive assembly; 80-cutting table belt drive assembly; 90-grain discharge clutch belt drive assembly; 100-grass discharge belt drive assembly; 110-drum variable speed belt drive assembly; 120-shredder belt drive assembly; 130-pushing Agitator belt drive assembly; 140-cleaning belt drive assembly; 150-fan variable speed belt drive assembly; 160-seed material lifting belt drive assembly; 170-miscellaneous chain drive assembly; 180-screen box belt drive assembly; 190-belt tensioning structure; 191-first fixed tensioning wheel; 192-second fixed tensioning wheel; 193-movable tensioning wheel; 194-tensioning adjustment member; 1941-driving member; 1942-support plate; 19411-cable; 19412-spring; 19413-pull rod; 195-pressure pulley; 196-belt; 197-driving pulley; 198-driven pulley. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, 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.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] It should be noted that the combine harvester in the embodiment of the present invention can realize the functions of harvesting, threshing, separating stems, removing debris, chopping and scattering straw, etc., and the structural device can adopt conventional ones. The present invention mainly protects the transmission structure of the combine harvester.

[0032] like Figure 1 , Figure 2 and Figure 4As shown, the present invention provides a transmission structure of a combine harvester, including an engine power output shaft 1, which transmits the power of the engine to the downstream (other components requiring power); a main intermediate shaft 2, the engine power output shaft 1 is transmission-connected with the main intermediate shaft 2; a cleaning transmission shaft 3, the main intermediate shaft 2 is transmission-connected with the cleaning transmission shaft 3; the cleaning transmission shaft 3 includes a cleaning right side shaft and a cleaning left side shaft that are connected to each other; the cleaning right side shaft is transmission-connected with the fan, the cleaning left side shaft is transmission-connected with the seed material elevator, and the seed material elevator is transmission-connected with the miscellaneous elevator and the screen box respectively.

[0033] In this embodiment, the engine power output shaft 1 transmits the engine power to the main intermediate shaft 2, and the main intermediate shaft 2 transmits the power to the cleaning transmission shaft 3, that is, to the cleaning right shaft and the cleaning left shaft; the cleaning right shaft transmits the power to the fan, and the fan works; the cleaning left shaft transmits the power to the seed material elevator, and the seed material elevator can transmit the power to the miscellaneous elevator and the screen box while working, and the miscellaneous elevator and the screen box work separately. In the transmission structure of the combine harvester of this embodiment, the cleaning right shaft and the cleaning left shaft share the load, and the cleaning transmission shaft 3 transmits the power to the fan and the seed material elevator, which can reduce the load of the cleaning transmission shaft 3, making the transmission structure of the cleaning transmission shaft 3 simple, and can reduce the risk of related failures such as shaft breakage, belt damage, and chain breakage.

[0034] Among them, the right side axis of cleaning and the left side axis of cleaning can be connected and fixed by a connecting piece.

[0035] As an optional solution, the right cleaning shaft and the left cleaning shaft are integrally formed. In the width direction of the fuselage of the combine harvester, the cleaning transmission shaft 3 extends from one side of the fuselage to the other side of the fuselage, that is, the 3 cleaning transmission shafts in this embodiment are coaxial, have high strength, can improve transmission efficiency, and further reduce the probability of failure.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, on the basis of the above embodiment, further, the left side of the main intermediate shaft 2 is transmission connected with the bridge transmission shaft 4, and the bridge transmission shaft 4 is transmission connected with the left side and the right side of the cutting table respectively; the right side of the main intermediate shaft 2 is transmission connected with the grass discharge wheel, the pushing auger and the cleaning transmission shaft 3 respectively; the grass discharge wheel is transmission connected with the drum and the chopper respectively.

[0037] In this embodiment, the left side of the main intermediate shaft 2 transmits power to the cross-bridge transmission shaft 4, and the cross-bridge transmission shaft 4 makes the cross-bridge work, and transmits power to the left and right sides of the cutting table at the same time. The right side of the main intermediate shaft 2 transmits power to the grass discharge wheel to make the grass discharge wheel work, and the grass discharge wheel can simultaneously transmit power to the roller to make the roller work, and the grass discharge wheel can simultaneously transmit power to the chopper to make the chopper work. Specifically, the right side of the main intermediate shaft 2 transmits power to the right side of the grass discharge wheel, the right side of the grass discharge wheel transmits power to the left side of the grass discharge wheel, and the left side of the grass discharge wheel transmits power to the roller and the chopper.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, on the basis of the above embodiment, further, the engine power output shaft 1 is also transmission connected to the grain unloading intermediate shaft 5, the grain unloading intermediate shaft 5 is transmission connected to the unloading barrel transmission box, the unloading barrel transmission box is transmission connected to the left side of the front bottom auger of the grain tank, the left side of the front bottom auger of the grain tank is transmission connected to the right side of the front bottom auger of the grain tank, and the right side of the front bottom auger of the grain tank is transmission connected to the rear bottom auger of the grain tank.

[0039] In this embodiment, the engine power output shaft 1 transmits power to the grain unloading intermediate shaft 5, and the grain unloading intermediate shaft 5 transmits power to the unloading barrel. While working, the unloading barrel can transmit power to the left side of the front bottom auger of the grain tank, and the left side of the front bottom auger of the grain tank transmits power to the right side of the front bottom auger of the grain tank, and the right side of the front bottom auger of the grain tank transmits power to the right side of the rear bottom auger of the grain tank, that is, the power is transmitted to the rear bottom auger of the grain tank.

[0040] In some optional schemes, the transmission structure of the combine harvester provided by the embodiment of the invention optimizes the transmission route, so that the transmission efficiency is high and the failure rate is reduced, thereby increasing the service life of the belt and chain, and facilitating subsequent maintenance and servicing, thereby increasing user benefits.

[0041] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, further, the engine power output shaft 1 is connected to the main intermediate shaft 2 through the main clutch belt drive assembly 60, the left side of the intermediate shaft is connected to the bridge drive shaft 4 through the bridge clutch belt drive assembly 70, and the bridge drive shaft 4 is connected to the cutter through the cutter belt drive assembly 80; the engine power output shaft 1 is connected to the grain unloading intermediate shaft through the grain unloading clutch belt drive assembly 90.

[0042] In this embodiment, the main clutch belt transmission assembly 60 may include a main clutch belt, a main clutch driving wheel and a main clutch driven wheel. The main clutch driving wheel may be coaxially arranged with the engine power output shaft 1, the main clutch driven wheel may be coaxially arranged with the main intermediate shaft 2, and the main clutch belt may be connected between the main clutch driving wheel and the main clutch driven wheel. The bridge clutch belt transmission assembly 70 may include a bridge clutch belt, a bridge clutch driving wheel and a bridge clutch driven wheel. The bridge clutch driving wheel may be coaxially arranged on the left side of the main intermediate shaft 2, the bridge clutch driven wheel may be coaxially arranged with the bridge transmission shaft 4, and the bridge clutch belt may be connected between the bridge clutch driving wheel and the bridge clutch driven wheel. The cutting platform belt transmission assembly 80 may include a cutting platform belt, a cutting platform driving wheel and a cutting platform driven wheel. The cutting platform driving wheel may be coaxially arranged with the bridge transmission shaft 4, the cutting platform driven wheel may be coaxially arranged with the cutting platform shaft 6, and the two ends of the cutting platform belt may be respectively sleeved on the cutting platform driving wheel and the cutting platform driven wheel. The grain unloading clutch belt drive assembly 90 may include a grain unloading clutch belt, a grain unloading clutch driving wheel and a grain unloading clutch driven wheel. The grain unloading clutch driving wheel may be coaxially arranged with the engine power output shaft 1, and the grain unloading clutch driven wheel may be coaxially arranged with the grain unloading shaft. The grain unloading clutch belt is connected between the grain unloading clutch driving wheel and the grain unloading clutch driven wheel.

[0043] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, further, the right side of the intermediate shaft is connected to the grass discharge wheel shaft 7 of the grass discharge wheel through the grass discharge belt transmission assembly 100, the grass discharge wheel shaft 7 is connected to the roller shaft 8 of the roller through the roller speed change belt transmission assembly 110, and the grass discharge wheel shaft 7 is connected to the chopping shaft 9 of the chopper through the chopping belt transmission assembly 120. Specifically, the grass discharge belt transmission assembly 100 may include a grass discharge belt, a grass discharge driving wheel and a grass discharge driven wheel, the grass discharge driving wheel may be coaxially arranged on the right side of the main intermediate shaft, the grass discharge driven wheel is coaxially arranged with the grass discharge wheel shaft 7, and the two ends of the grass discharge belt are respectively sleeved on the grass discharge driving wheel and the grass discharge driven wheel. The roller speed-changing belt transmission assembly 110 may include a roller speed-changing belt, a roller speed-changing driving wheel and a roller speed-changing driven wheel. The roller speed-changing driving wheel may be coaxially arranged on the grass-discharging wheel shaft 7 (which may be the left side of the grass-discharging wheel shaft), the roller speed-changing driven wheel may be coaxially arranged on the roller shaft 8, and the roller speed-changing belt is connected between the roller speed-changing driving wheel and the roller speed-changing driven wheel. The chopping belt transmission assembly 120 may include a chopping belt, a chopping driving wheel and a chopping driven wheel. The chopping driving wheel may be coaxially arranged on the grass-discharging wheel shaft 7 (which may be the left side of the grass-discharging wheel shaft), the chopping driven wheel may be coaxially arranged on the chopping shaft 9, and the two ends of the chopping belt are respectively sleeved on the chopping driving wheel and the chopping driven wheel.

[0044] like Figure 1 and Figure 2As shown, on the basis of the above-mentioned embodiment, further, the right side of the intermediate shaft is connected to the pushing auger shaft 10 of the pushing auger through a pushing auger belt transmission assembly 130. Specifically, the pushing auger belt transmission assembly 130 may include a pushing auger belt, a pushing auger driving wheel and a pushing auger driven wheel. The pushing auger driving wheel may be coaxially arranged on the right side of the main intermediate shaft, and the pushing auger driven wheel may be coaxially arranged on the pushing auger shaft 10. The two ends of the pushing auger belt are respectively mounted on the pushing auger driving wheel and the pushing auger driven wheel.

[0045] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, further, the right side of the main intermediate shaft is connected to the cleaning drive shaft 3 through the cleaning belt drive assembly 140, the right side shaft of the cleaning is connected to the fan through the fan speed change belt drive assembly 150, the left side shaft of the cleaning is connected to the seed material elevator shaft 30 of the seed material elevator through the seed material lifting belt drive assembly 160, the seed material elevator shaft 30 is connected to the miscellaneous elevator through the miscellaneous chain drive assembly 170, and the seed material elevator shaft 30 is connected to the screen box through the screen box belt drive assembly 180.

[0046] Specifically, the cleaning belt drive assembly 140 may include a cleaning belt, a cleaning driving wheel and a cleaning driven wheel. The cleaning driving wheel may be coaxially arranged on the right side of the main intermediate shaft, and the cleaning driven wheel may be coaxially arranged on the cleaning transmission shaft 3 (of the main body, arranged on the right side cleaning shaft), and the two ends of the cleaning belt may be respectively mounted on the cleaning driving wheel and the cleaning driven wheel.

[0047] The fan speed change belt drive assembly 150 may include a fan speed change belt, a fan speed change driving wheel and a fan speed change driven wheel. The fan speed change driving wheel may be coaxially arranged on the right side shaft of the cleaning machine, and the fan speed change driven wheel may be coaxially arranged on the fan shaft 20. The two ends of the fan belt are respectively mounted on the fan speed change driving wheel and the fan speed change driven wheel.

[0048] The seed material lifting belt transmission assembly 160 includes a seed material lifting belt, a seed material lifting driving wheel and a seed material lifting driven wheel. The seed material lifting driving wheel can be coaxially arranged on the left side shaft of the cleaning machine, and the seed material lifting driven wheel is coaxially arranged on the seed material lifting shaft. The two ends of the seed material lifting belt are respectively mounted on the seed material lifting driving wheel and the seed material lifting driven wheel.

[0049] The miscellaneous chain transmission assembly 170 may include a miscellaneous chain, a miscellaneous driving wheel and a miscellaneous driven wheel. The miscellaneous driving wheel may be coaxially arranged on the seed material lifting shaft, and the miscellaneous driven wheel may be coaxially arranged on the miscellaneous lifting shaft 40. The two ends of the miscellaneous chain are respectively mounted on the miscellaneous driving wheel and the miscellaneous driven wheel.

[0050] The screen box belt drive assembly 180 may include a screen box belt, a screen box driving wheel and a screen box driven wheel. The screen box driving wheel may be coaxially arranged on the seed material lifting shaft, and the screen box driven wheel may be coaxially arranged on the screen box shaft 50. The two ends of the screen box belt are respectively mounted on the screen box driving wheel and the screen box driven wheel.

[0051] It should be noted that the "axis" in the embodiment of the present invention is the central axis of rotation.

[0052] An embodiment of the present invention further provides a combine harvester, comprising the combine harvester transmission structure of any of the above-mentioned technical solutions, and thus having all the beneficial technical effects of the combine harvester transmission structure, which will not be described in detail herein.

[0053] like Figure 3 As shown, based on the above embodiment, the combine harvester further includes a belt tensioning structure 190; the belt tensioning structure 190 can be arranged at the belt transmission component where the belt tension needs to be adjusted.

[0054] The belt tensioning structure includes a fixed tensioning wheel, a movable tensioning wheel 193 and a tensioning adjustment member 194; there are multiple fixed tensioning wheels, including a first fixed tensioning wheel 191 and a second fixed tensioning wheel 192, the first fixed tensioning wheel 191 is used to abut against the outer wall of the belt, the second fixed tensioning wheel 192 is used to abut against the inner wall of the belt 196, and the movable tensioning wheel 193 is used to abut against the outer wall of the belt 196; one of the first fixed tensioning wheel 191 and the movable tensioning wheel 193 is used to be set close to the driven pulley 198; the tensioning adjustment member 194 is connected to the movable tensioning wheel 193 to drive the movable tensioning wheel 193 to move.

[0055] It can be understood that the belt 196 in the belt transmission assembly is annular, and in the length direction of the belt 196, the driving pulley 197 (i.e., the driving pulley) and the driven pulley 198 (i.e., the driven pulley) are respectively located on both sides of the belt 196, and in the width direction of the belt 196, the belt 196 includes a first side and a second side that are oppositely arranged. The belt portion located on the first side and the belt portion located on the second side are both formed with an inner wall and an outer wall.

[0056] In this embodiment, the first fixed tension wheel 191 among the multiple fixed tension wheels can support the belt 196 on the outside of the belt, and the second fixed tension wheel 192 can support the belt on the inside of the belt; the position of the movable tension wheel 193 is adjusted by the tension adjustment member 194, so that the force of the movable tension wheel 193 pressing the belt 196 can be adjusted, thereby adjusting the tension of the belt 196. The cooperation between the fixed tension wheel and the movable tension wheel 193 facilitates the tensioning of the belt 196, which can effectively reduce the jumping of the belt 196 during operation and prevent the belt from jumping and being damaged. In addition, one of the first fixed tension wheel 191 and the movable tension wheel 193 is arranged close to the driven pulley 198, so that the part of the belt 196 close to the driven pulley 198 can be pressed against the inside of the belt, thereby increasing the wrap angle of the driven pulley 198, thereby improving the transmission efficiency of the belt 196.

[0057] There may be multiple fixed tension wheels, multiple fixed tension wheels may be arranged on the first side, multiple fixed tension wheels may be arranged on the second side, or multiple fixed tension wheels may be arranged on both the first side and the second side.

[0058] As an alternative, Figure 1 and Figure 2 As shown, the first fixed tensioner 191 and the second fixed tensioner 192 are used to be located on the same side of the belt 196 .

[0059] In this embodiment, the first fixed tensioning wheel 191 and the second fixed tensioning wheel 192 are located on the same side of the belt, that is, the first fixed tensioning wheel 191 and the second fixed tensioning wheel 192 are both located on the first side or the second side of the belt. In this way, two fixed tensioning wheels can be arranged one inside and one outside on the same side of the belt 196, so that the tensioning of the belt 196 is more effective.

[0060] On the basis of the above embodiment, further, the movable tension wheel 193 can be arranged on a different side of the belt 196 from the first fixed tension wheel 191. For example, the first fixed tension wheel 191 and the second fixed tension wheel 192 are arranged on the first side of the belt 196, and the movable tension wheel 193 is arranged on the second side of the belt 196; the first fixed tension wheel 191 and the second fixed tension wheel 192 are arranged on the second side of the belt 196, and the movable tension wheel 193 is arranged on one side of the belt.

[0061] As an alternative, Figure 1 and Figure 2As shown, the movable tensioning wheel 193 and the first fixed tensioning wheel 191 are used to be located on the same side of the belt 196. For example, the first fixed tensioning wheel 191 and the second fixed tensioning wheel 192 are arranged on the first side of the belt 196, and the movable tensioning wheel 193 is also arranged on the first side of the belt; the first fixed tensioning wheel 191 and the second fixed tensioning wheel 192 are arranged on the second side of the belt, and the movable tensioning wheel 193 is arranged on the second side of the belt 196; the other of the first fixed tensioning wheel 191 and the movable tensioning wheel 193 is used to be arranged close to the driving pulley 197.

[0062] In this embodiment, the movable tensioning wheel 193 and the first fixed tensioning wheel 191 are located on the same side, so one of the first fixed tensioning wheel 191 and the movable tensioning wheel 193 is arranged close to the driven pulley 198, and the other is arranged close to the driving pulley 197. Accordingly, the wrap angle of the driving pulley 197 can be increased to further improve the transmission efficiency.

[0063] The movable tension wheel 193 may be disposed closer to the driven pulley 198 than the first fixed tension wheel 191 , or the first fixed tension wheel 191 may be disposed closer to the driven pulley 198 than the movable tension wheel 193 .

[0064] like Figure 1 and Figure 2 As shown, on the basis of the above-mentioned embodiment, further, the first fixed tensioning wheel 191 and the movable tensioning wheel 193 are arranged closer to the other side of the belt compared to the second fixed tensioning wheel 192. Such an arrangement can tension the corresponding belt parts between the first fixed tensioning wheel 191 and the second fixed tensioning wheel 192 and between the second fixed tensioning wheel 192 and the movable tensioning wheel 193, thereby making the tensioning of the entire belt 196 more stable and effective, and further reducing belt jumping.

[0065] The movable tension wheel 193 is located between the first fixed tension wheel 191 and the second fixed tension wheel 192 .

[0066] As an alternative, Figure 1 and Figure 2 As shown, the second fixed tension wheel 192 is located between the first fixed tension wheel 191 and the second fixed tension wheel 192 .

[0067] In this embodiment, the second fixed tensioning wheel 192 is located between the first fixed tensioning wheel 191 and the movable tensioning wheel 193, and can form a triangular structure with two upper parts (close to the inner side of the belt 196) and one lower part, so that the belt 196 can be tensioned more effectively and forcefully, further reducing belt vibration.

[0068] like Figure 2As shown, on the basis of the above embodiment, further, the belt tensioning structure also includes a belt pressure wheel 195; the belt pressure wheel 195 is used to abut against the outer wall of the belt; and the belt pressure wheel 195 is located on the other side of the belt opposite to the side where the first fixed tensioning wheel 191 is provided. Specifically, if the first fixed tensioning wheel 191, the second fixed tensioning wheel 192 and the movable tensioning wheel 193 are provided on the first side of the belt, the belt pressure wheel 195 is provided on the second side of the belt; if the first fixed tensioning wheel 191, the second fixed tensioning wheel 192 and the movable tensioning wheel 193 are provided on the second side of the belt 196, the belt pressure wheel 195 is provided on the first side of the belt.

[0069] In this embodiment, the belt pressure pulley 195 presses the belt inward, further increasing the wrap angle of the driven pulley 198 and the wrap angle of the driving pulley 197, and further improving the transmission efficiency.

[0070] The number of the belt-pressing rollers 195 is one, two, three or four, etc., and can be set according to needs.

[0071] like Figure 1 and Figure 2 As shown, based on the above embodiment, further, the tensioning adjustment member 194 includes a driving member 1941 and a support plate 1942; the support plate 1942 is used for rotational connection with the fuselage of the combine harvester through a rotating shaft, and the driving member 1941 and the movable tensioning wheel 193 are rotationally connected to the two ends of the bracket respectively (it can be understood that the two ends of the support plate 1942 are respectively located on both sides of the rotating shaft).

[0072] In this embodiment, the support plate 1942 forms a lever structure through the rotating shaft, and the driving member 1941 drives one end of the support plate 1942 to move in a direction away from the belt 196, and the other end of the support plate 1942 drives the movable tension wheel 193 to press the belt 196 inward; the driving member 1941 drives one end of the support plate 1942 to move in a direction close to the belt 196, and the other end of the support plate 1942 drives the movable tension wheel 193 to move in a direction away from the belt 196, so that the pressure on the belt can be reduced, thereby adjusting the tension of the belt. The tension adjusting member 194 of this structure is simple in structure and low in cost.

[0073] The adjusting member may be an electric mechanism such as an electric telescopic rod, a cylinder or an oil cylinder fixed on the fuselage. The adjusting member may also include a cable 19411, a spring 19412 connected to the cable 19411, and a pull rod 19413 connected to the spring 19412 (playing a buffering role). The end of the pull rod 19413 away from the spring 19412 is rotatably connected to the support plate 1942. The support plate 1942 is driven by the cable 19411. The cable 19411 may be fixed to the fuselage, thereby fixing the current position of the movable tension wheel 193.

[0074] like Figure 1 and Figure 2 As shown, the combine harvester includes a single-row grass discharge wheel, which is connected to the chopper through a primary chopping belt transmission assembly. The transmission structure between the grass discharge wheel and the chopper is simple, which can effectively avoid blockage in the grass discharge process, improve the straw chopping efficiency, ensure smooth grass discharge, have little impact on the belt, and extend the service life of the belt.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present invention and forming different embodiments.

Claims

1. A transmission structure for a combine harvester, characterized in that: include: The engine power output shaft transmits the engine power to the downstream; A main intermediate shaft, the engine power output shaft is drivingly connected to the main intermediate shaft; A cleaning transmission shaft, the main intermediate shaft is drivingly connected to the cleaning transmission shaft; the cleaning transmission shaft comprises a cleaning right shaft and a cleaning left shaft which are connected to each other; the cleaning right shaft is drivingly connected to the fan, the cleaning left shaft is drivingly connected to the seed material elevator, and the seed material elevator is drivingly connected to the debris elevator and the screen box respectively.

2. The transmission structure of the combine harvester according to claim 1, characterized in that: The right cleaning shaft and the left cleaning shaft are integrally formed, and in the width direction of the fuselage of the combine harvester, the cleaning transmission shaft extends from one side of the fuselage to the other side of the fuselage.

3. The transmission structure of the combine harvester according to claim 1, characterized in that: The left side of the main intermediate shaft is in driving connection with the bridge transmission shaft, and the bridge transmission shaft is respectively in driving connection with the left side of the cutting platform and the right side of the cutting platform; The right side of the main intermediate shaft is respectively connected to the grass discharge wheel, the pushing auger and the cleaning transmission shaft; the grass discharge wheel is respectively connected to the drum and the chopper.

4. The transmission structure of the combine harvester according to claim 3, characterized in that: The engine power output shaft is also transmission connected to the grain unloading intermediate shaft, the grain unloading intermediate shaft is transmission connected to the unloading barrel transmission box, the unloading barrel transmission box is transmission connected to the left side of the front bottom auger of the grain box, the left side of the front bottom auger of the grain box is transmission connected to the right side of the front bottom auger of the grain box, and the right side of the front bottom auger of the grain box is transmission connected to the rear bottom auger of the grain box.

5. The transmission structure of the combine harvester according to claim 4, characterized in that: The engine power output shaft is connected to the main intermediate shaft through a main clutch belt drive assembly, the left side of the intermediate shaft is connected to the bridge transmission shaft through a bridge clutch belt drive assembly, and the bridge transmission shaft is connected to the cutting platform through a cutting platform belt drive assembly; The engine power output shaft is connected to the grain unloading intermediate shaft through a grain unloading clutch belt transmission assembly.

6. The transmission structure of the combine harvester according to claim 3, characterized in that: The right side of the intermediate shaft is connected to the grass removal wheel shaft of the grass removal wheel through a grass removal belt transmission assembly, the grass removal wheel shaft is connected to the drum shaft of the drum through a drum speed change belt transmission assembly, and the grass removal wheel shaft is connected to the chopping shaft of the chopper through a chopping belt transmission assembly; The right side of the intermediate shaft is connected to the push auger shaft of the push auger through a push auger belt transmission assembly; The right side of the intermediate shaft is connected to the cleaning drive shaft through a cleaning belt drive assembly, the right side of the cleaning shaft is connected to the fan through a fan speed changing belt drive assembly, the left side of the cleaning shaft is connected to the seed material elevator shaft of the seed material elevator through a seed material lifting belt drive assembly, the seed material elevator shaft is connected to the miscellaneous elevator through a miscellaneous chain drive assembly, and the seed material elevator shaft is connected to the screen box through a screen box belt drive assembly.

7. A combine harvester, characterized in that: include: A combine harvester transmission structure as claimed in any one of claims 1 to 6.

8. The combine harvester according to claim 7, characterized in that: The combine harvester also includes a belt tensioning structure; The belt tensioning structure comprises a fixed tensioning wheel, a movable tensioning wheel and a tensioning adjusting member; There are multiple fixed tension wheels, including a first fixed tension wheel and a second fixed tension wheel, the first fixed tension wheel is used to abut against the outer wall of the belt, the second fixed tension wheel is used to abut against the inner wall of the belt, and the movable tension wheel is used to abut against the outer wall of the belt; one of the first fixed tension wheel and the movable tension wheel is used to be arranged close to the driven pulley; the tension adjusting member is connected to the movable tension wheel to drive the movable tension wheel to move.

9. The combine harvester according to claim 8, characterized in that: The first fixed tension wheel, the second fixed tension wheel and the movable tension wheel are used to be located on the same side of the belt; the other of the first fixed tension wheel and the movable tension wheel is used to be arranged close to the driving pulley; the first fixed tension wheel and the movable tension wheel are arranged closer to the other side of the belt than the second fixed tension wheel.

10. The combine harvester according to claim 7, characterized in that: The combine harvester comprises a single-row grass row wheel, and the grass row wheel is drivingly connected to the chopper via a primary chopping belt transmission assembly.

Images