Two-shaft type power reversing and power high-low transmission system and tractor

Abstract

The utility model provides a two-shaft type power reversing and power high-low transmission system and a tractor. The two-shaft type power reversing and power high-low transmission system comprises a power gear shifting area, a main speed changing gear shifting area, an auxiliary speed changing gear shifting area, a transmission shaft system, a gear system and a clutch system. The transmission shaft system comprises an input shaft, a reverse gear idler shaft, an output shaft, a main speed change output shaft, a main speed change input shaft, an auxiliary speed change input shaft, a small bevel gear shaft, a power output rear section shaft and a power output front section shaft. Switching between a forward low gear and a forward high gear is controlled through the wet clutch, namely, a power high-low structure is adopted, power does not need to be cut off in the gear shifting process, the number of operating rods can be effectively reduced, and gear shifting is convenient, fast and comfortable; a high-gear driving gear and a low-gear driving gear are directly used for a forward gear, and two gears can be effectively reduced, so that compared with a transmission mechanical gear shifting system, two gears can be reduced, the manufacturing cost of a transmission system is reduced, the weight of the transmission system is reduced, and the reliability of the transmission system is improved.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically to a two-shaft power reversing and high / low power transmission system and a tractor. Background Technology

[0002] Currently, tractors generally use a mechanical shifting structure, which has low transmission efficiency, multiple control levers, cumbersome and uncomfortable operation, and requires power interruption during shifting, resulting in low overall tractor operating efficiency and a decreased user experience. Utility Model Content

[0003] The purpose of this utility model is achieved through the following technical measures: a two-shaft power reversing and power high-low transmission system, characterized in that it includes a power shifting area, a main gear shifting area, a secondary gear shifting area, a transmission shaft system, a gear system, and a clutch system;

[0004] The drive shaft system includes an input shaft, a reverse idler gear shaft, an output shaft, a main transmission output shaft, a main transmission input shaft, a secondary transmission input shaft, a small bevel gear shaft, a power output rear shaft, and a power output front shaft.

[0005] The gear system includes a reverse drive gear, a reverse idler gear, a reverse driven gear, a low-gear drive gear, a low-gear driven gear, a high-gear drive gear, a high-gear driven gear, a fourth-gear driven gear, a fourth-gear drive gear, a third-gear driven gear, a third-gear drive gear, a second-gear driven gear, a second-gear drive gear, a first-gear driven gear, a first-gear drive gear, a B-gear drive gear, a B-gear driven gear, an A-gear drive gear, an A-gear driven gear, a D-gear drive gear, a D-gear driven gear, a C-gear drive gear, a C-gear driven gear, a small bevel gear, a hydraulic output drive gear, a hydraulic output idler gear, and a hydraulic output driven gear.

[0006] The clutch system includes a reverse wet clutch, a low-gear wet clutch, and a high-gear wet clutch.

[0007] The power shift area includes two parts: power reversal and power high / low. The power shift area is equipped with one reverse wet clutch and two forward wet clutches. The two forward wet clutches include one high-gear wet clutch and one low-gear wet clutch. The main transmission shift area is equipped with four main transmission gears, and the auxiliary transmission shift area is equipped with four auxiliary transmission gears. There are 32 forward gears in forward mode and 16 reverse gears in reverse mode. The power shift area can switch between reverse, low forward gears, and high forward gears from front to back.

[0008] As a preferred option, the reverse gear adopts a two-shaft arrangement structure, with an additional reverse idler shaft, while the forward gear directly uses the high-gear wet clutch and the low-gear wet clutch to transmit power.

[0009] As a preferred option, the main and auxiliary transmission shifting areas adopt a two-shaft arrangement structure, where the main transmission first, second, third, and fourth gears are switched between the main transmission input shaft and the main transmission output shaft, and the auxiliary transmission A, B, C, and D gears are switched between the auxiliary transmission input shaft and the small bevel gear shaft.

[0010] As a preferred embodiment: the reverse drive gear, low gear drive gear, and high gear drive gear are loosely mounted on the input shaft via deep groove ball bearings; the first gear driven gear, second gear driven gear, third gear driven gear, and fourth gear driven gear are loosely mounted on the main transmission output shaft via needle roller bearings.

[0011] As a preferred embodiment: the A-gear driven gear and the B-gear driven gear are loosely fitted on the small bevel gear shaft via needle roller bearings, and the C-gear drive gear and the D-gear drive gear are loosely fitted on the auxiliary transmission input shaft via needle roller bearings.

[0012] As a preferred embodiment, a continuous hydraulic output interface is provided between the power shift zone and the main and auxiliary transmission shift zone, which can provide power to an external hydraulic pump and hydraulic motor.

[0013] A tractor characterized by employing the aforementioned two-shaft power reversing and high / low power transmission system.

[0014] Due to the adoption of the above technical solution, the advantages of this utility model compared with the prior art are:

[0015] 1. The present invention uses a wet clutch control for switching between forward and reverse gears, that is, it adopts a power reversing structure, which makes gear shifting easy, quick and comfortable;

[0016] 2. The present invention uses a wet clutch control for switching between forward low gear and forward high gear, that is, it adopts a power high and low structure. There is no need to cut off the power during the gear shifting process, which can effectively reduce the number of control levers and make gear shifting easy, quick and comfortable.

[0017] 3. In forward gear mode, both high and low gears are selectable. The main transmission has 4 variable gears, and the auxiliary transmission has 4 variable gears, resulting in 2×4×4 (32) forward gears in forward gear mode. In reverse gear mode, both the main transmission and auxiliary transmission have 4 variable gears, resulting in 1×4×4 (16) reverse gears in reverse gear mode. The large number of selectable gears and operating speeds can meet the needs of various working conditions.

[0018] 4. The forward gear of this utility model directly borrows the high and low gear drive gears, which can effectively reduce two gears. Therefore, compared with the transmission mechanical shifting system, this utility model can reduce two gears, reduce the manufacturing cost of the transmission system, reduce the weight of the transmission system, and improve the reliability of the transmission system.

[0019] 5. This utility model directly utilizes the high and low gear drive gears for the forward gear, eliminating the need for a forward gear gear. Compared with the transmission mechanical shifting system, this reduces the length of the forward gear gear in terms of the front and rear wheelbase.

[0020] 6. A continuous hydraulic output interface is added to the side of the transmission system to provide power for external hydraulic pumps, hydraulic motors, etc.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] The diagram is labeled with the following numbers: 1. Input shaft; 2. Reverse idler gear shaft; 3. Output shaft; 4. Main transmission output shaft; 5. Main transmission input shaft; 6. Secondary transmission input shaft; 7. Small bevel gear shaft; 8. Power output rear section shaft; 9. Power output front section shaft; Z1. Reverse drive gear; Z2. Reverse idler gear; Z3. Reverse driven gear; Z4. Low gear drive gear; Z5. Low gear driven gear; Z6. High gear drive gear; Z7. High gear driven gear; Z8. Fourth gear driven gear; Z9. Fourth gear drive gear; Z10. Third gear driven gear; Z11. Third gear drive gear; Z12. Second gear driven gear. Gears; Z13, Second gear drive gear; Z14, First gear driven gear; Z15, First gear drive gear; Z16, B gear drive gear; Z17, B gear driven gear; Z18, A gear drive gear; Z19, A gear driven gear; Z20, D gear drive gear; Z21, D gear driven gear; Z22, C gear drive gear; Z23, C gear driven gear; Z24, Small bevel gear; Z25, Hydraulic output drive gear; Z26, Hydraulic output idler gear; Z27, Hydraulic output driven gear; A, Reverse wet clutch; B, Low gear wet clutch; C, High gear wet clutch. Attached Figure Description

[0023] Appendix Figure 1 This is a structural diagram of the two-shaft power shift transmission system of this utility model. Detailed Implementation

[0024] Example: As attached Figure 1 As shown, a two-shaft power reversing and power high-low transmission system includes a power shifting zone, a main shifting zone, a secondary shifting zone, a drive shaft system, a gear system, and a clutch system.

[0025] The transmission shaft system includes an input shaft 1, a reverse idler gear shaft 2, an output shaft 3, a main transmission output shaft 4, a main transmission input shaft 5, a secondary transmission input shaft 6, a small bevel gear shaft 7, a power output rear section shaft 8, and a power output front section shaft 9.

[0026] The gear system includes a reverse drive gear Z1, a reverse idler gear Z2, a reverse driven gear Z3, a low-gear drive gear Z4, a low-gear driven gear Z5, a high-gear drive gear Z6, a high-gear driven gear Z7, a fourth-gear driven gear Z8, a fourth-gear drive gear Z9, a third-gear driven gear Z11, a third-gear drive gear Z11, a second-gear driven gear Z12, a second-gear drive gear Z13, a first-gear driven gear Z14, a first-gear drive gear Z15, a B-gear drive gear Z16, a B-gear driven gear Z17, an A-gear drive gear Z18, an A-gear driven gear Z19, a D-gear drive gear Z20, a D-gear driven gear Z21, a C-gear drive gear Z22, a C-gear driven gear Z23, a small bevel gear Z24, a hydraulic output drive gear Z25, a hydraulic output idler gear Z26, and a hydraulic output driven gear Z27.

[0027] The clutch system includes a reverse wet clutch A, a low-gear wet clutch B, and a high-gear wet clutch C.

[0028] The power shift area comprises two parts: power reversal and power high / low. It features one reverse wet clutch A and two forward wet clutches. The two forward wet clutches include one high-gear wet clutch C and one low-gear wet clutch B. The main transmission shift area has four main gears, and the auxiliary transmission shift area has four auxiliary gears. There are 32 forward gears in forward mode and 16 reverse gears in reverse mode. The power shift area allows for switching between reverse, low forward gears, and high forward gears from front to back.

[0029] The reverse gear adopts a two-shaft arrangement structure, with an additional reverse idler shaft 2, and the forward gear directly uses the high-gear wet clutch C and the low-gear wet clutch B to transmit power.

[0030] The main and auxiliary transmission shifting areas adopt a two-shaft arrangement structure. The main transmission input shaft 5 and the main transmission output shaft 4 are used to switch the first, second, third and fourth gears of the main transmission, and the auxiliary transmission A, B, C and D gears are used between the auxiliary transmission input shaft 6 and the small bevel gear shaft 7.

[0031] The reverse drive gear Z1, low gear drive gear Z4, and high gear drive gear Z6 are loosely mounted on the input shaft 1 via deep groove ball bearings. The first gear driven gear Z14, second gear driven gear Z12, third gear driven gear Z10, and fourth gear driven gear Z8 are loosely mounted on the main transmission output shaft 4 via needle roller bearings. The A gear driven gear Z19 and B gear driven gear Z17 are loosely mounted on the small bevel gear shaft 7 via needle roller bearings, and the C gear drive gear Z22 and D gear drive gear Z20 are loosely mounted on the auxiliary transmission input shaft 6 via needle roller bearings.

[0032] A continuous hydraulic output interface is provided between the power shift zone and the main and auxiliary transmission shift zone, which can provide power to an external hydraulic pump and hydraulic motor.

[0033] The power shift area has one reverse gear and two forward gears (high gear + low gear). The main and auxiliary transmission areas have four main transmission gears and four auxiliary transmission gears. In forward mode, there are 2×4×4 (32) forward gears, and in reverse mode, there are 1×4×4 (16) reverse gears. The specific implementation method is as follows:

[0034] Forward Gear 1 (Low-1-A): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0035] Forward Gear 2 (Low-1-B): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0036] Forward Gear 3 (Low-1-C): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0037] Forward Gear 4 (Low-1-D): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0038] Forward Gear 5 (Low-2-A): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0039] Forward Gear 6 (Low-2-B): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0040] Forward Gear 7 (Low-2-C): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0041] Forward Gear 8 (Low-2-D): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0042] Forward Gear 9 (Low-3-A): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0043] Forward Gear 10 (Low-3-B): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0044] Forward Gear 11 (Low-3-C): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0045] Forward Gear 12 (Low-3-D): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0046] Forward Gear 13 (Low-4-A): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0047] Forward Gear 14 (Low-4-B): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0048] Forward Gear 15 (Low-4-C): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0049] Forward Gear 16 (Low-4-D): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch B - low gear drive gear Z4 - low gear driven gear Z5 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0050] Forward Gear 17 (High-1-A): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0051] Forward Gear 18 (High-1-B): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0052] Forward Gear 19 (High-1-C): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0053] Forward Gear 20 (High-1-D): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0054] Forward Gear 21 (High-2-A): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second-gear drive gear Z13 - second-gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A-gear drive gear Z18 - A-gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0055] Forward Gear 22 (High-2-B): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second-gear drive gear Z13 - second-gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B-gear drive gear Z16 - B-gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0056] Forward Gear 23 (High-2-C): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second-gear drive gear Z13 - second-gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C-gear drive gear Z22 - C-gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0057] Forward Gear 24 (High-2-D): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second-gear drive gear Z13 - second-gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D-gear drive gear Z20 - D-gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0058] Forward Gear 25 (High-3-A): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third-speed drive gear Z11 - third-speed driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A-speed drive gear Z18 - A-speed driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0059] Forward Gear 26 (High-3-B): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third-speed drive gear Z11 - third-speed driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B-speed drive gear Z16 - B-speed driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0060] Forward Gear 27 (High-3-C): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third-speed drive gear Z11 - third-speed driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C-speed drive gear Z22 - C-speed driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0061] Forward Gear 28 (High-3-D): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third-speed drive gear Z11 - third-speed driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D-speed drive gear Z20 - D-speed driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0062] Forward Gear 29 (High-4-A): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth-speed drive gear Z9 - fourth-speed driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A-gear drive gear Z18 - A-gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0063] Forward Gear 30 (High-4-B): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth-speed drive gear Z9 - fourth-speed driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B-speed drive gear Z16 - B-speed driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0064] Forward Gear 31 (High-4-C): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth-speed drive gear Z9 - fourth-speed driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C-speed drive gear Z22 - C-speed driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0065] Forward gear 32 (High-4-D): Power is supplied by engine - torsional damper - input shaft 1 - high-end wet clutch C - high-end drive gear Z6 - high-end driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth-speed drive gear Z9 - fourth-speed driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D-speed drive gear Z20 - D-speed driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0066] Reverse Gear 1 (Reverse-1-A): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0067] Reverse 2 (Reverse-1-B): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0068] Reverse Gear 3 (Reverse-1-C): Power is supplied by the engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0069] Reverse Gear 4 (Reverse-1-D): Power is supplied by the engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - first gear drive gear Z15 - first gear driven gear Z14 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0070] Reverse Gear 5 (Reverse-2-A): Power is supplied by engine - torsional damper - input shaft 1 - low gear wet clutch A - low gear drive gear Z6 - low gear driven gear Z7 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0071] Reverse Gear 6 (Reverse-2-B): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0072] Reverse Gear 7 (Reverse-2-C): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0073] Reverse Gear 8 (Reverse-2-D): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - second gear drive gear Z13 - second gear driven gear Z12 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0074] Reverse Gear 9 (Reverse-3-A): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0075] Reverse 10 (Reverse-3-B): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0076] Reverse Gear 11 (Reverse-3-C): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0077] Reverse Gear 12 (Reverse-3-D): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - third gear drive gear Z11 - third gear driven gear Z10 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0078] Reverse Gear 13 (High-4-A): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - A gear drive gear Z18 - A gear driven gear Z19 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0079] Reverse Gear 14 (High-4-B): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - B gear drive gear Z16 - B gear driven gear Z17 - meshing sleeve - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0080] Reverse 15 (High-4-C): Power comes from the engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - C gear drive gear Z22 - C gear driven gear Z23 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0081] Reverse Gear 16 (High-4-D): Power is supplied by engine - torsional damper - input shaft 1 - reverse wet clutch A - reverse drive gear Z1 - reverse idler gear Z2 - reverse driven gear Z3 - output shaft 3 - spline sleeve - main transmission input shaft 5 - fourth gear drive gear Z9 - fourth gear driven gear Z8 - synchronizer - main transmission output shaft 4 - spline sleeve - auxiliary transmission input shaft 6 - meshing sleeve - D gear drive gear Z20 - D gear driven gear Z21 - small bevel gear shaft 7 - small bevel gear Z24 - rear wheel.

[0082] The power supply is provided to the agricultural implements via the engine, input shaft 1, spline sleeve, front power output shaft 9, spline sleeve, rear power output shaft 8, and agricultural implements.

[0083] The power source is the engine - input shaft 1 - spline sleeve - power output front shaft 9 - hydraulic output drive gear Z25 - hydraulic output idler gear Z26 - hydraulic output driven gear Z27 - hydraulic pump, which can provide power for external hydraulic pumps, hydraulic motors, etc.

Claims

1. A two-shaft power reversing and high / low power transmission system, characterized in that: This includes the power shift area, main transmission shift area, auxiliary transmission shift area, drive shaft system, gear system, and clutch system; The drive shaft system includes an input shaft, a reverse idler gear shaft, an output shaft, a main transmission output shaft, a main transmission input shaft, a secondary transmission input shaft, a small bevel gear shaft, a power output rear shaft, and a power output front shaft. The gear system includes a reverse drive gear, a reverse idler gear, a reverse driven gear, a low-gear drive gear, a low-gear driven gear, a high-gear drive gear, a high-gear driven gear, a fourth-gear driven gear, a fourth-gear drive gear, a third-gear driven gear, a third-gear drive gear, a second-gear driven gear, a second-gear drive gear, a first-gear driven gear, a first-gear drive gear, a B-gear drive gear, a B-gear driven gear, an A-gear drive gear, an A-gear driven gear, a D-gear drive gear, a D-gear driven gear, a C-gear drive gear, a C-gear driven gear, a small bevel gear, a hydraulic output drive gear, a hydraulic output idler gear, and a hydraulic output driven gear. The clutch system includes a reverse wet clutch, a low-gear wet clutch, and a high-gear wet clutch. The power shift area includes two parts: power reversal and power high / low. The power shift area is equipped with one reverse wet clutch and two forward wet clutches. The two forward wet clutches include one high-gear wet clutch and one low-gear wet clutch. The main transmission shift area is equipped with four main transmission gears, and the auxiliary transmission shift area is equipped with four auxiliary transmission gears. There are 32 forward gears in forward mode and 16 reverse gears in reverse mode. The power shift area can switch between reverse, low forward gears, and high forward gears from front to back.

2. The two-shaft power reversing and high / low power transmission system according to claim 1, characterized in that: The reverse gear adopts a two-shaft arrangement structure, with an additional reverse idler shaft, while the forward gear directly uses the high-gear wet clutch and the low-gear wet clutch to transmit power.

3. A two-shaft power reversing and high / low power transmission system according to claim 2, characterized in that: The main and auxiliary transmission shifting areas adopt a two-shaft arrangement structure. The main transmission first, second, third and fourth gears are switched between the main transmission input shaft and the main transmission output shaft, and the auxiliary transmission A, B, C and D gears are switched between the auxiliary transmission input shaft and the small bevel gear shaft.

4. A two-shaft power reversing and high / low power transmission system according to claim 3, characterized in that: The reverse drive gear, low gear drive gear, and high gear drive gear are loosely mounted on the input shaft via deep groove ball bearings; the first gear driven gear, second gear driven gear, third gear driven gear, and fourth gear driven gear are loosely mounted on the main transmission output shaft via needle roller bearings.

5. A two-shaft power reversing and high / low power transmission system according to claim 4, characterized in that: The A-gear driven gear and the B-gear driven gear are loosely fitted on the small bevel gear shaft via needle roller bearings, and the C-gear driven gear and the D-gear driven gear are loosely fitted on the auxiliary transmission input shaft via needle roller bearings.

6. A two-shaft power reversing and high / low power transmission system according to any one of claims 1 to 5, characterized in that: A continuous hydraulic output interface is provided between the power shift zone and the main and auxiliary transmission shift zone, which can provide power to an external hydraulic pump and hydraulic motor.

7. A tractor, characterized in that: The two-shaft power reversing and power high-low transmission system described in claim 6 is adopted.

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