Transmission system of longitudinal axial flow combine harvester

Abstract

The invention relates to a longitudinal axial flow combine harvester transmission system, and belongs to the field of harvesters. The power driving device is simultaneously connected with the walking driving device, the unloading transmission device and the threshing device through belt pulleys, one end of an input shaft of the cleaning transmission box is connected with the walking driving device, and the other end of the input shaft is simultaneously connected with the cleaning transmission box and the cleaning device; the auxiliary fan shaft is connected with an input shaft of the cleaning transmission box, the auxiliary fan shaft is connected with the main fan shaft through a belt pulley, the auxiliary fan shaft is simultaneously connected with the grain lifting mechanism, the impurity lifting mechanism and the screen box transmission mechanism through belt pulleys, the main fan shaft is sleeved with a speed regulation disc, and the main fan shaft is fixedly sleeved with a fixed disc. The movable disc and the adjusting pad are both movably arranged on a main fan shaft in a sleeving mode, the adjusting pad is arranged between the fixed disc and the movable disc, the fixed disc, the movable disc and the adjusting pad form a space for sleeving a belt, and the space is in a horn shape with symmetrical longitudinal sections. The working load of the main fan shaft can be reduced, and the rotating speed of the fan can be adjusted.

Description

Technical Field

[0001] The present invention relates to the field of harvesters, and in particular to a longitudinal axial flow combine harvester transmission system. Background Art

[0002] In a full-feed combine harvester, crops are cut by the harvesting device and transported to the threshing and separation device via a conveyor for threshing and separation. The threshed stalks are chopped by a chopper behind the threshing drum and scattered onto the harvested field. The threshed mixture is cleaned by the cleaning device, and the clean grains are transported to the grain tank via a grain elevator. The remaining debris is returned to the upper screen or the threshing drum for secondary cleaning or re-threshing via a debris re-threshing device. In a full-feed combine harvester, the power for each device comes from the engine, which drives the corresponding devices through various transmission mechanisms.

[0003] In existing full-feed combine harvesters, the power for the machine's travel mechanism is typically transmitted from the engine output shaft, located below the cab, to the travel gearbox input shaft. The gearbox then drives the crawler tracks, which propel the machine. The power for the working mechanism is then transmitted from the engine output shaft to the fan shaft of the cleaning unit to drive the fan. The power is then transmitted from the fan shaft to the threshing drum shaft, the grain auger drive shaft, the waste auger drive shaft, and the chopper drive input shaft of the threshing and separation unit.

[0004] In this type of transmission, since the fan shaft serves as both the working part of the fan and the power input part for other devices, its workload is large. Moreover, as a fan shaft, its operating speed is high and cannot be changed. Therefore, high assembly accuracy and strength requirements are placed on the entire transmission device. At the same time, maintenance is inconvenient, which increases the manufacturing, assembly and after-sales maintenance costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a longitudinal axial flow combine harvester transmission system to solve the above problems.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a longitudinal axial flow combine harvester transmission system, comprising: a power drive device, a travel drive device, a cleaning device, a header transmission device, a grain unloading transmission device, a threshing device, a chopping device, a cleaning transmission box input shaft and a cleaning transmission box; the power drive device is connected to the travel drive device, the grain unloading transmission device and the threshing device at the same time through a pulley, one end of the cleaning transmission box input shaft is connected to the travel drive device, and the other end is connected to the cleaning transmission box and the cleaning device at the same time, the cleaning transmission box is connected to the header transmission device, and the chopping device is connected to the threshing device; the cleaning device comprises: a fan transmission mechanism, a grain lifting mechanism, a miscellaneous lifting mechanism The fan transmission mechanism comprises an auxiliary fan shaft and a main fan shaft, the auxiliary fan shaft is connected to the input shaft of the cleaning transmission box, the auxiliary fan shaft is connected to the main fan shaft through a pulley, and the auxiliary fan shaft is simultaneously connected to the grain lifting mechanism, the miscellaneous lifting mechanism and the screen box transmission mechanism through a pulley, a speed regulating disk is sleeved on the main fan shaft, the speed regulating disk comprises a fixed plate, a movable plate and an adjustment pad, the fixed plate is fixedly sleeved on the main fan shaft, the movable plate and the adjustment pad are both movably sleeved on the main fan shaft, the adjustment pad is arranged between the fixed plate and the movable plate, the fixed plate, the movable plate and the adjustment pad form a space for the belt to be sleeved, and the space is a trumpet-shaped symmetrical longitudinal cross-section.

[0007] The beneficial effects of the present invention are as follows: compared with the technical solution in the prior art in which the power of the entire machine working device is transmitted from the fan shaft, the present invention is provided with an auxiliary fan shaft and a main fan shaft, and only transmits the power of the grain lifting device, the miscellaneous lifting device and the cleaning device in the harvester from the auxiliary fan shaft, and transmits the power of the walking device, the grain unloading device, the threshing and separation device and the chopper in the harvester directly from the engine, which is beneficial to reducing the workload of the main fan shaft, thereby reducing the manufacturing, assembly and after-sales maintenance costs; in addition, a speed regulating disk is mounted on the main fan shaft, which is also beneficial to adjusting the diameter of the pulley when the belt is mounted between the fixed plate and the moving plate through the fixed plate and the moving plate, thereby adjusting the rotation speed of the main fan shaft and realizing the adjustment of the fan speed.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, three gears meshing in sequence are arranged side by side in the cleaning transmission box, and the input shaft of the cleaning transmission box passes through the gear on one side and is coaxially connected to the auxiliary fan shaft.

[0010] The beneficial effect of adopting the above further solution is that the cleaning transmission box adopts gear transmission, and transmits power to the cutting platform transmission device and the cleaning device at the same time, with high transmission efficiency.

[0011] Furthermore, the harvesting platform transmission device includes: a cleaning transmission box output shaft, a harvesting platform transmission box input shaft and a harvesting platform transmission box; the cleaning transmission box output shaft passes through the gear on the other side, the harvesting platform transmission box input shaft is connected to the harvesting platform transmission box, the cleaning transmission box output shaft and the harvesting platform transmission box input shaft are connected by a pulley, a first floating tensioning wheel is provided on the pulley between the cleaning transmission box output shaft and the harvesting platform transmission box input shaft, and the harvesting platform transmission box is connected to the harvesting device of the harvester.

[0012] The beneficial effect of adopting the above further solution is that it is conducive to transmitting the power output by the cleaning transmission box to the harvesting device of the harvester, and the first floating tensioning wheel is conducive to transmitting and disconnecting power by tightening or loosening the belt.

[0013] Furthermore, the grain lifting mechanism includes: a grain auger input shaft, two grain auger bevel gears and a grain auger transmission shaft; one end of the grain auger input shaft is connected to the auxiliary fan shaft through a pulley, and the two grain auger bevel gears are vertically meshed. The two grain auger bevel gears are respectively mounted on the other end of the grain auger input shaft and the grain auger transmission shaft, and the end of the grain auger transmission shaft away from the grain auger bevel gears is connected to the grain lifting device of the harvester.

[0014] The beneficial effect of adopting the above further scheme is that the grain auger input shaft is conducive to transmitting the power on the auxiliary fan shaft to the grain auger bevel gear, and after the two grain auger bevel gears change direction, the power is output to the grain lifting device of the harvester.

[0015] Furthermore, the miscellaneous lifting mechanism includes: a miscellaneous auger input shaft, two miscellaneous auger bevel gears and a miscellaneous auger transmission shaft; one end of the miscellaneous auger input shaft is connected to the auxiliary fan shaft through a pulley, and the two miscellaneous auger bevel gears are vertically meshed. The two miscellaneous auger bevel gears are respectively mounted on the other end of the miscellaneous auger input shaft and the miscellaneous auger transmission shaft, and the end of the miscellaneous auger transmission shaft away from the miscellaneous auger bevel gears is connected to the miscellaneous lifting device of the harvester.

[0016] The beneficial effect of adopting the above further scheme is that the miscellaneous auger input shaft is conducive to transmitting the power on the auxiliary fan shaft to the miscellaneous auger bevel gear, and after changing direction of the two miscellaneous auger bevel gears, the power is output to the miscellaneous lifting device of the harvester.

[0017] Furthermore, the screen box transmission mechanism includes: a transition shaft, a screen box drive shaft and a screen box; one end of the transition shaft is connected to the auxiliary fan shaft through a pulley, and the other end is connected to the screen box drive shaft through a pulley, the screen box drive shaft is connected to the screen box, and the screen box is connected to the cleaning device of the harvester.

[0018] The beneficial effect of adopting the above further solution is that the transition shaft is conducive to transmitting the power on the auxiliary fan shaft to the screen box drive shaft through the pulley, thereby driving the screen box and the harvester's cleaning device to work.

[0019] Furthermore, the power drive device includes: an engine, an engine output shaft and a power intermediate shaft; the engine output shaft passes through the engine, and the engine output shaft at one end of the engine is connected to the power intermediate shaft through a pulley.

[0020] The beneficial effect of adopting the above further solution is that the engine output shaft passes through the engine, which is conducive to transmitting the engine power to both sides simultaneously through the output shaft, and is conducive to the engine directly driving more working devices of the harvester.

[0021] Furthermore, the travel drive device includes: a travel intermediate shaft, a travel gearbox input shaft and a travel gearbox; one end of the travel intermediate shaft is connected to the power intermediate shaft through a pulley, and the other end is connected to the cleaning transmission box input shaft through a pulley, the middle of the travel intermediate shaft is connected to the travel gearbox input shaft through a pulley, the travel gearbox input shaft is connected to the travel gearbox, and the travel gearbox is connected to the harvester's travel device;

[0022] The grain unloading transmission device includes a grain unloading transmission box input shaft and a grain unloading transmission box; the engine output shaft at the other end of the engine is connected to the grain unloading transmission box input shaft through a pulley, and a second floating tensioner is provided on the pulley between the engine output shaft and the grain unloading transmission box input shaft, the grain unloading transmission box input shaft is connected to the grain unloading transmission box, and the grain unloading transmission box is connected to the grain unloading device of the harvester.

[0023] The beneficial effects of adopting the above-mentioned further scheme are: the traveling intermediate shaft is conducive to transmitting the engine output power transmitted through the power intermediate shaft to the traveling gearbox, thereby driving the traveling device of the harvester to work; the input shaft of the unloading transmission box is conducive to transmitting the power output of the engine directly to the unloading transmission box, thereby driving the unloading device of the harvester to work, and the second floating tensioning wheel is conducive to controlling the connection and disconnection of the engine power transmitted to the unloading transmission box by tensioning and loosening.

[0024] Furthermore, the threshing device includes: a threshing drum transmission box input shaft, a threshing drum transmission box and a threshing drum; the engine output shaft is connected to one end of the threshing drum transmission box input shaft through a pulley, a third floating tensioning pulley is provided on the pulley between the engine output shaft and the threshing drum transmission box input shaft, the other end of the threshing drum transmission box input shaft is connected to the threshing drum transmission box, the threshing drum is connected to the threshing drum transmission box, and the threshing drum is connected to the threshing separation device of the harvester.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that the input shaft of the threshing drum transmission box is conducive to directly transmitting the power output by the engine to the threshing drum, thereby driving the threshing and separation device of the harvester to work. Compared with the technical scheme of transmitting power from the main fan shaft to the threshing drum in the prior art, the present invention directly transmits the power output by the engine to the threshing drum with a large workload, thereby reducing the workload of the main fan shaft.

[0026] Furthermore, the chopper device includes a chopper input shaft and a chopper; the chopper input shaft is connected to the chopper, and the chopper input shaft is connected to the threshing drum transmission box input shaft through a pulley.

[0027] The beneficial effect of adopting the above further solution is that the chopper input shaft is conducive to transmitting power to the chopper, thereby driving the chopper to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A transmission schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram of the fan transmission mechanism and speed regulating disk provided in an embodiment of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. Power drive unit; 2. Travel drive unit; 3. Cleaning unit; 4. Cutting platform transmission unit; 5. Grain unloading transmission unit; 6. Threshing unit; 7. Chopping unit; 8. Cleaning transmission box input shaft; 9. Cleaning transmission box; 11. Engine; 12. Engine output shaft; 13. Power intermediate shaft; 21. Travel intermediate shaft; 22. Travel transmission box input shaft; 23. Travel transmission box; 31. Fan transmission mechanism; 32. Grain lifting mechanism; 33. Miscellaneous lifting mechanism; 34. Screen box transmission mechanism; 35. Speed regulating disk; 41. Cleaning transmission box output shaft; 42. Cutting platform transmission box input shaft; 43. Cutting platform transmission Box; 51, unloading grain transmission box input shaft; 52, unloading grain transmission box; 61, threshing drum transmission box input shaft; 62, threshing drum transmission box; 63, threshing drum; 71, chopper input shaft; 72, chopper; 311, auxiliary fan shaft; 312, main fan shaft; 321, grain auger input shaft; 322, grain auger bevel gear; 323, grain auger drive shaft; 331, miscellaneous auger input shaft; 332, miscellaneous auger bevel gear; 333, miscellaneous auger drive shaft; 341, transition shaft; 342, screen box drive shaft; 343, screen box; 351, fixed plate; 352, moving plate; 353, adjustment pad. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 and Figure 2As shown, a longitudinal flow combine harvester transmission system includes: a power drive device 1, a travel drive device 2, a cleaning device 3, a header transmission device 4, a grain unloading transmission device 5, a threshing device 6, a chopping device 7, a cleaning transmission box input shaft 8 and a cleaning transmission box 9; the power drive device 1 is connected to the travel drive device 2, the grain unloading transmission device 5 and the threshing device 6 at the same time through a pulley, one end of the cleaning transmission box input shaft 8 is connected to the travel drive device 2, and the other end is connected to the cleaning transmission box 9 and the cleaning device 3 at the same time, the cleaning transmission box 9 is connected to the header transmission device 4, and the chopping device 7 is connected to the threshing device 6; the cleaning device 3 includes: a fan transmission mechanism 31, a grain lifting mechanism 32, a miscellaneous lifting mechanism 33 and a screen box transmission mechanism 34, the fan transmission mechanism 31 includes an auxiliary fan shaft 311 and a main fan shaft The auxiliary fan shaft 311 is connected to the input shaft 8 of the cleaning transmission box, and the auxiliary fan shaft 311 is connected to the main fan shaft 312 through a pulley. The auxiliary fan shaft 311 is simultaneously connected to the grain lifting mechanism 32, the miscellaneous lifting mechanism 33 and the screen box transmission mechanism 34 through a pulley. The main fan shaft 312 is provided with a speed regulating disk 35, and the speed regulating disk 35 includes a fixed disk 351, a movable disk 352 and an adjustment pad 353. The fixed disk 351 is fixedly mounted on the main fan shaft 312, and the movable disk 352 and the adjustment pad 353 are both movably mounted on the main fan shaft 312. The adjustment pad 353 is arranged between the fixed disk 351 and the movable disk 352. The fixed disk 351, the movable disk 352 and the adjustment pad 353 form a space for the belt to be mounted, and the space is a trumpet-shaped symmetrical longitudinal cross-section.

[0034] Among them, it should be noted that: the working principle of the speed regulating disk 35 is that when the movable disk 352 approaches the fixed disk 351, the space between the fixed disk 351 and the movable disk 352 becomes smaller, and the belt is arranged on the part close to the outer diameter in this space, which is equivalent to the diameter of the pulley becoming larger, so when power is transmitted to the main fan shaft 312, the speed of the main fan shaft 312 will decrease; conversely, when the movable disk 352 is away from the fixed disk 351, the space between the fixed disk 351 and the movable disk 352 becomes larger, and the belt is arranged on the part close to the inner diameter in this space, which is equivalent to the diameter of the pulley becoming smaller, so when power is transmitted to the main fan shaft 312, the speed of the main fan shaft 312 will increase.

[0035] The beneficial effects of the present invention are as follows: compared with the technical solution in the prior art in which the power of the entire machine working device is transmitted from the fan shaft, the present invention is provided with an auxiliary fan shaft and a main fan shaft, and only transmits the power of the grain lifting device, the miscellaneous lifting device and the cleaning device in the harvester from the auxiliary fan shaft, and transmits the power of the walking device, the grain unloading device, the threshing and separation device and the chopper in the harvester directly from the engine, which is beneficial to reducing the workload of the main fan shaft, thereby reducing the manufacturing, assembly and after-sales maintenance costs; in addition, a speed regulating disk is mounted on the main fan shaft, which is also beneficial to adjusting the diameter of the pulley when the belt is mounted between the fixed plate and the moving plate through the fixed plate and the moving plate, thereby adjusting the rotation speed of the main fan shaft and realizing the adjustment of the fan speed.

[0036] Preferably, Figure 1 As shown, three gears meshing in sequence are arranged side by side in the cleaning transmission box 9 , and the cleaning transmission box input shaft 8 passes through the gears on one side and is coaxially connected to the auxiliary fan shaft 311 .

[0037] The beneficial effect of adopting the above preferred solution is that the cleaning transmission box adopts gear transmission, and transmits power to the cutting platform transmission device and the cleaning device at the same time, with high transmission efficiency.

[0038] Preferably, Figure 1 As shown, the harvesting platform transmission device 4 includes: a cleaning transmission box output shaft 41, a harvesting platform transmission box input shaft 42 and a harvesting platform transmission box 43; the cleaning transmission box output shaft 41 passes through the gear on the other side, and the harvesting platform transmission box input shaft 42 is connected to the harvesting platform transmission box 43, and the cleaning transmission box output shaft 41 and the harvesting platform transmission box input shaft 42 are connected by a pulley, and a first floating tensioning wheel is set on the pulley between the cleaning transmission box output shaft 41 and the harvesting platform transmission box input shaft 42, and the harvesting platform transmission box 43 is connected to the harvesting device of the harvester.

[0039] The beneficial effects of adopting the above preferred solution are: it is conducive to transmitting the power output by the cleaning transmission box to the harvesting device of the harvester, and the first floating tensioning wheel is conducive to transmitting and disconnecting power by tightening or loosening the belt.

[0040] Preferably, Figure 1 As shown, the grain lifting mechanism 32 includes: a grain auger input shaft 321, two grain auger bevel gears 322 and a grain auger transmission shaft 323; one end of the grain auger input shaft 321 is connected to the auxiliary fan shaft 311 through a pulley, and the two grain auger bevel gears 322 are vertically meshed, and the two grain auger bevel gears 322 are respectively mounted on the other end of the grain auger input shaft 321 and the grain auger transmission shaft 323, and the end of the grain auger transmission shaft 323 away from the grain auger bevel gear 322 is connected to the grain lifting device of the harvester.

[0041] The beneficial effect of adopting the above preferred scheme is that the grain auger input shaft is conducive to transmitting the power on the auxiliary fan shaft to the grain auger bevel gear, and after the two grain auger bevel gears change direction, the power is output to the grain lifting device of the harvester.

[0042] Preferably, Figure 1 As shown, the miscellaneous lifting mechanism 33 includes: a miscellaneous auger input shaft 331, two miscellaneous auger bevel gears 332 and a miscellaneous auger transmission shaft 333; one end of the miscellaneous auger input shaft 331 is connected to the auxiliary fan shaft 311 through a pulley, and the two miscellaneous auger bevel gears 332 are vertically meshed, and the two miscellaneous auger bevel gears 332 are respectively mounted on the other end of the miscellaneous auger input shaft 331 and the miscellaneous auger transmission shaft 333, and the end of the miscellaneous auger transmission shaft 333 away from the miscellaneous auger bevel gears 332 is connected to the miscellaneous lifting device of the harvester.

[0043] The beneficial effect of adopting the above-mentioned preferred scheme is that the miscellaneous auger input shaft is conducive to transmitting the power on the auxiliary fan shaft to the miscellaneous auger bevel gear, and after changing direction through the two miscellaneous auger bevel gears, the power is output to the miscellaneous lifting device of the harvester.

[0044] Preferably, Figure 1 As shown, the screen box transmission mechanism 34 includes: a transition shaft 341, a screen box drive shaft 342 and a screen box 343; one end of the transition shaft 341 is connected to the auxiliary fan shaft 311 through a pulley, and the other end is connected to the screen box drive shaft 342 through a pulley, the screen box drive shaft 342 is connected to the screen box 343, and the screen box 343 is connected to the cleaning device of the harvester.

[0045] The beneficial effect of adopting the above preferred solution is that the transition shaft is conducive to transmitting the power on the auxiliary fan shaft to the screen box drive shaft through the pulley, thereby driving the screen box and the harvester's cleaning device to work.

[0046] Preferably, Figure 1 As shown, the power drive device 1 includes: an engine 11, an engine output shaft 12 and a power intermediate shaft 13; the engine output shaft 12 passes through the engine 11, and the engine output shaft 12 at one end of the engine 11 is connected to the power intermediate shaft 13 through a pulley.

[0047] The beneficial effect of adopting the above preferred solution is that the engine output shaft passes through the engine, which is conducive to transmitting the engine power to both sides simultaneously through the output shaft, and is conducive to the engine directly driving more working devices of the harvester.

[0048] Preferably, Figure 1As shown, the travel drive device 2 includes: a travel intermediate shaft 21, a travel gearbox input shaft 22 and a travel gearbox 23; one end of the travel intermediate shaft 21 is connected to the power intermediate shaft 13 through a pulley, and the other end is connected to the cleaning transmission box input shaft 8 through a pulley, the middle of the travel intermediate shaft 21 is connected to the travel gearbox input shaft 22 through a pulley, the travel gearbox input shaft 22 is connected to the travel gearbox 23, and the travel gearbox 23 is connected to the travel device of the harvester;

[0049] The grain unloading transmission device 5 includes a grain unloading transmission box input shaft 51 and a grain unloading transmission box 52; the engine output shaft 12 at the other end of the engine 11 is connected to the grain unloading transmission box input shaft 51 through a pulley, and a second floating tensioner is provided on the pulley between the engine output shaft 12 and the grain unloading transmission box input shaft 51, the grain unloading transmission box input shaft 51 is connected to the grain unloading transmission box 52, and the grain unloading transmission box 52 is connected to the grain unloading device of the harvester.

[0050] The beneficial effects of adopting the above-mentioned preferred scheme are: the walking intermediate shaft is conducive to transmitting the engine output power transmitted through the power intermediate shaft to the walking gearbox, thereby driving the harvester's walking device to work; the unloading transmission box input shaft is conducive to directly transmitting the engine output power to the unloading transmission box, thereby driving the harvester's unloading device to work, and the second floating tensioning wheel is conducive to controlling the connection and disconnection of the engine power transmitted to the unloading transmission box by tensioning and loosening.

[0051] Preferably, Figure 1 As shown, the threshing device 6 includes: a threshing drum transmission box input shaft 61, a threshing drum transmission box 62 and a threshing drum 63; the engine output shaft 12 is connected to one end of the threshing drum transmission box input shaft 61 through a pulley, a third floating tensioning pulley is provided on the pulley between the engine output shaft 12 and the threshing drum transmission box input shaft 61, the other end of the threshing drum transmission box input shaft 61 is connected to the threshing drum transmission box 62, the threshing drum 63 is connected to the threshing drum transmission box 62, and the threshing drum 63 is connected to the threshing separation device of the harvester.

[0052] It should be noted that the threshing drum transmission box 62 has two transmission ratios, high and low, and can output two rotational speeds to drive the threshing drum 63 .

[0053] The beneficial effect of adopting the above-mentioned preferred scheme is that the input shaft of the threshing drum transmission box is conducive to directly transmitting the power output by the engine to the threshing drum, thereby driving the threshing and separation device of the harvester to work. Compared with the technical solution of transmitting power from the main fan shaft to the threshing drum in the prior art, the present invention directly transmits the power output by the engine to the threshing drum with a large workload, thereby reducing the workload of the main fan shaft.

[0054] Preferably, Figure 1 As shown, the chopper device 7 includes a chopper input shaft 71 and a chopper 72; the chopper input shaft 71 is connected to the chopper 72, and the chopper input shaft 71 is connected to the threshing drum transmission box input shaft 61 through a pulley.

[0055] It should be noted that, in a preferred embodiment of the present invention, the chopper input shaft 71 is connected to the threshing drum transmission box 62 , and the power of the threshing drum transmission box 62 is transmitted to the chopper 72 via the chopper input shaft 71 .

[0056] The beneficial effect of adopting the above preferred solution is that the chopper input shaft is conducive to transmitting power to the chopper, thereby driving the chopper to work.

[0057] One of the key points of the present invention is that while one path of power output by the engine is transmitted to the traveling gearbox 23 through the power intermediate shaft 13 and the traveling intermediate shaft 21, the traveling intermediate shaft 13 branches out another path to drive the harvester's cleaning transmission box 9. The cleaning transmission box 9 outputs power in two paths and transmits the power to the harvesting table transmission device 4 and the cleaning device 3 respectively. The auxiliary fan shaft 311 in the cleaning device 3 then transmits the power to the main fan shaft 312, the grain lifting device, the miscellaneous lifting device and the cleaning device.

[0058] Another key point of the present invention is that the other power output by the engine is directly transmitted to the threshing drum 63 and the chopper shaft 72 through the threshing drum transmission box input shaft 61.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0062] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0063] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A longitudinal axial flow combine harvester transmission system, characterized in that: include: A power drive device (1), a travel drive device (2), a cleaning device (3), a cutting table transmission device (4), a grain unloading transmission device (5), a threshing device (6), a chopping device (7), a cleaning transmission box input shaft (8) and a cleaning transmission box (9); the power drive device (1) is connected to the travel drive device (2), the grain unloading transmission device (5) and the threshing device (6) through a pulley, one end of the cleaning transmission box input shaft (8) is connected to the travel drive device (2), and the other end is connected to the cleaning transmission box (9) and the cleaning device (3) at the same time, the cleaning transmission box (9) is connected to the cutting table transmission device (4), and the chopping device (7) is connected to the threshing device (6); The cleaning device (3) comprises: a fan transmission mechanism (31), a grain lifting mechanism (32), a debris lifting mechanism (33) and a screen box transmission mechanism (34); the fan transmission mechanism (31) comprises an auxiliary fan shaft (311) and a main fan shaft (312); the auxiliary fan shaft (311) is connected to the input shaft (8) of the cleaning transmission box; the auxiliary fan shaft (311) is connected to the main fan shaft (312) via a pulley; the auxiliary fan shaft (311) is simultaneously connected to the grain lifting mechanism (32), the debris lifting mechanism (33) and the screen box transmission mechanism (34) via a pulley; the main fan A speed regulating disc (35) is sleeved on the shaft (312), and the speed regulating disc (35) includes a fixed disc (351), a movable disc (352) and an adjusting pad (353). The fixed disc (351) is fixedly sleeved on the main fan shaft (312), and the movable disc (352) and the adjusting pad (353) are both movably sleeved on the main fan shaft (312). The adjusting pad (353) is arranged between the fixed disc (351) and the movable disc (352). The fixed disc (351), the movable disc (352) and the adjusting pad (353) form a space for the belt to be sleeved, and the space is a trumpet shape with a symmetrical longitudinal cross-section.

2. A longitudinal axial flow combine harvester transmission system according to claim 1, characterized in that: Three gears meshing in sequence are arranged side by side in the cleaning transmission box (9); the cleaning transmission box input shaft (8) passes through the gears on one side and is coaxially connected to the auxiliary fan shaft (311).

3. A longitudinal axial flow combine harvester transmission system according to claim 2, characterized in that: The cutting platform transmission device (4) comprises: a cleaning transmission box output shaft (41), a cutting platform transmission box input shaft (42) and a cutting platform transmission box (43); the cleaning transmission box output shaft (41) passes through the gear on the other side, the cutting platform transmission box input shaft (42) is connected to the cutting platform transmission box (43), the cleaning transmission box output shaft (41) and the cutting platform transmission box input shaft (42) are connected through a pulley, a first floating tensioning wheel is provided on the pulley between the cleaning transmission box output shaft (41) and the cutting platform transmission box input shaft (42), and the cutting platform transmission box (43) is connected to the harvesting device of the harvester.

4. The longitudinal axial flow combine harvester transmission system according to claim 1, characterized in that: The grain lifting mechanism (32) comprises: a grain auger input shaft (321), two grain auger bevel gears (322) and a grain auger transmission shaft (323); one end of the grain auger input shaft (321) is connected to the auxiliary fan shaft (311) via a pulley, the two grain auger bevel gears (322) are vertically meshed, the two grain auger bevel gears (322) are respectively sleeved on the other end of the grain auger input shaft (321) and the grain auger transmission shaft (323), and one end of the grain auger transmission shaft (323) away from the grain auger bevel gears (322) is connected to the grain lifting device of the harvester.

5. The longitudinal axial flow combine harvester transmission system according to claim 1, characterized in that: The waste lifting mechanism (33) comprises: a waste auger input shaft (331), two waste auger bevel gears (332) and a waste auger transmission shaft (333); one end of the waste auger input shaft (331) is connected to the auxiliary fan shaft (311) through a pulley, the two waste auger bevel gears (332) are vertically meshed, the two waste auger bevel gears (332) are respectively sleeved on the other end of the waste auger input shaft (331) and the waste auger transmission shaft (333), and the end of the waste auger transmission shaft (333) away from the waste auger bevel gears (332) is connected to the waste lifting device of the harvester.

6. The longitudinal axial flow combine harvester transmission system according to claim 1, characterized in that: The screen box transmission mechanism (34) includes: a transition shaft (341), a screen box drive shaft (342) and a screen box (343); one end of the transition shaft (341) is connected to the auxiliary fan shaft (311) through a pulley, and the other end is connected to the screen box drive shaft (342) through a pulley, the screen box drive shaft (342) is connected to the screen box (343), and the screen box (343) is connected to the cleaning device of the harvester.

7. The longitudinal axial flow combine harvester transmission system according to claim 1, characterized in that: The power drive device (1) comprises: an engine (11), an engine output shaft (12) and a power intermediate shaft (13); the engine output shaft (12) passes through the engine (11), and the engine output shaft (12) at one end of the engine (11) is connected to the power intermediate shaft (13) via a pulley.

8. The longitudinal axial flow combine harvester transmission system according to claim 7, characterized in that: The travel drive device (2) comprises: a travel intermediate shaft (21), a travel gearbox input shaft (22) and a travel gearbox (23); one end of the travel intermediate shaft (21) is connected to the power intermediate shaft (13) via a pulley, and the other end is connected to the cleaning transmission box input shaft (8) via a pulley; the middle of the travel intermediate shaft (21) is connected to the travel gearbox input shaft (22) via a pulley; the travel gearbox input shaft (22) is connected to the travel gearbox (23); and the travel gearbox (23) is connected to the travel device of the harvester; The grain unloading transmission device (5) includes a grain unloading transmission box input shaft (51) and a grain unloading transmission box (52); the engine output shaft (12) at the other end of the engine (11) is connected to the grain unloading transmission box input shaft (51) through a pulley, and a second floating tensioner is provided on the pulley between the engine output shaft (12) and the grain unloading transmission box input shaft (51), the grain unloading transmission box input shaft (51) is connected to the grain unloading transmission box (52), and the grain unloading transmission box (52) is connected to the grain unloading device of the harvester.

9. The longitudinal axial flow combine harvester transmission system according to claim 7, characterized in that: The threshing device (6) comprises: a threshing drum transmission box input shaft (61), a threshing drum transmission box (62) and a threshing drum (63); the engine output shaft (12) is connected to one end of the threshing drum transmission box input shaft (61) through a pulley, a third floating tensioning wheel is provided on the pulley between the engine output shaft (12) and the threshing drum transmission box input shaft (61), the other end of the threshing drum transmission box input shaft (61) is connected to the threshing drum transmission box (62), the threshing drum (63) is connected to the threshing drum transmission box (62), and the threshing drum (63) is connected to the threshing separation device of the harvester.

10. The longitudinal axial flow combine harvester transmission system according to claim 9, characterized in that: The chopping device (7) comprises a chopper input shaft (71) and a chopper (72); the chopper input shaft (71) is connected to the chopper (72), and the chopper input shaft (71) is connected to the threshing drum transmission box input shaft (61) via a pulley.

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