Gearbox power system and agricultural machine

Abstract

This invention provides a gearbox power system for agricultural machinery, comprising: a power reversing high / low gear integrated module, including two power shafts and an intermediate shaft. One power shaft is equipped with a forward clutch and a reverse clutch for reversing, while the other power shaft is equipped with a low-gear clutch and a high-gear clutch for shifting gears. The intermediate shaft connects a low-gear gear set and a high-gear gear set. One power shaft serves as a power input shaft for connecting drive components, and the other power shaft is a power output shaft. The power input shaft transmits power through the intermediate shaft to the power output shaft, and the axes of the intermediate shaft and the two power shafts are not coplanar. This invention integrates reversing and high / low gear functions within the three shafts of the power reversing high / low gear integrated module, improving the axial and circumferential space utilization of the module. This allows the gearbox power system to meet the needs of different application scenarios while occupying less space and having a simpler structure.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a gearbox power system and agricultural machinery. Background Technology

[0002] With the increasing application of agricultural technologies, such as tractors and other agricultural machinery, transmission systems are commonly used for power transmission. Current transmission systems typically employ a sequential axial arrangement for power reversal and high / low gear shifting. This places high demands on the axial dimensions of the gearbox, resulting in a less compact structure and lower space utilization. To save axial space, existing technologies often sacrifice the high / low gear shifting function in exchange for a shorter axial dimension. However, this prevents current transmission systems from simultaneously improving space utilization and meeting the diverse needs of various user scenarios. Utility Model Content

[0003] The main purpose of this utility model is to propose a gearbox power system and agricultural machinery, which aims to solve the technical problem that the existing technology cannot simultaneously ensure space utilization and meet the needs of more user scenarios.

[0004] To achieve the above objectives, this utility model provides a gearbox power system for agricultural machinery. The gearbox power system includes: a power reversing high / low gear integrated module comprising two power shafts and an intermediate shaft; one power shaft is equipped with a forward clutch and a reverse clutch for reversing, and the other power shaft is equipped with a low-gear clutch and a high-gear clutch for shifting gears; the intermediate shaft is driven by a low-gear gear set and a high-gear gear set; one power shaft is a power input shaft for connecting a drive component, and the other power shaft is a power output shaft; the power input shaft transmits power to the power output shaft via the intermediate shaft, and the axes of the intermediate shaft and the two power shafts are not coplanar; a four-wheel drive system, wherein the power output shaft is connected to the four-wheel drive system via a variable-speed main transmission module; the four-wheel drive system includes a front-wheel drive module and a rear-wheel drive module; the front-wheel drive module is connected to the front axle of the agricultural machinery via a four-wheel drive clutch for engaging or disengaging the front axle; and the rear-wheel drive module transmits power to the rear axle of the agricultural machinery.

[0005] In this embodiment of the present invention, the gearbox power system further includes a PTO module for outputting power to the implements of the agricultural machinery. The PTO module includes a PTO drive shaft with a PTO clutch, which is used to engage or disengage the power input shaft via the PTO clutch.

[0006] In this embodiment of the utility model, the PTO module further includes a PTO output shaft with a first PTO shifter. The first PTO shifter has PTO gear sets with different speed ratios on both sides. The first PTO shifter is used to engage or disengage the PTO gear sets so that the power transmitted by the PTO drive shaft is transmitted to the working tool through the PTO gear sets and the PTO output shaft.

[0007] In this embodiment of the present invention, a second PTO shifter is provided on the PTO drive shaft, and the PTO module further includes a PTO high-gear set. The speed ratio of the PTO high-gear set is less than the speed ratio of the two PTO gear sets. The second PTO shifter is used to engage the PTO high-gear set so that the power transmitted by the PTO drive shaft is transmitted to the PTO output shaft through the PTO high-gear set.

[0008] In this embodiment of the invention, the two power shafts are arranged sequentially in the horizontal direction, and the intermediate shaft is arranged vertically below the two power shafts. The intermediate shaft is located between the two power shafts in the horizontal direction, and both the horizontal and vertical directions are perpendicular to the axial direction of the power shafts.

[0009] In this embodiment of the utility model, the power reversing high and low gear integrated module further includes an idler shaft with a reversing idler wheel. The power input shaft transmits power to the intermediate shaft through the idler shaft. The axes of the power input shaft, the intermediate shaft, the power output shaft, and the idler shaft are not coplanar.

[0010] In this embodiment of the utility model, the main transmission module includes a main transmission output shaft for transmitting power to the four-wheel drive device. Both the power output shaft and the main transmission output shaft are provided with a main shifter. Both sides of the main shifter have main transmission gear sets with different speed ratios. The main shifter is used to engage the main transmission gear sets so that the power on the power output shaft is transmitted to the main transmission output shaft through the main transmission gear sets.

[0011] In this embodiment of the invention, the gearbox power system includes a variable-speed secondary gearbox module, and the primary gearbox module transmits power to the four-wheel drive device through the secondary gearbox module.

[0012] In this embodiment of the invention, the transmission power system further includes a creeper gear module that can reduce speed and increase torque, and the auxiliary transmission module is connected to the main transmission module through the creeper gear module; or, the creeper gear module is connected to the main transmission module through the auxiliary transmission module.

[0013] This utility model also proposes an agricultural machine, which includes a front axle, a rear axle, and a gearbox power system as described above.

[0014] Through the above technical solution, the gearbox power system provided by this utility model embodiment has the following beneficial effects: The power reversing high / low gear integrated module integrates reversing and high / low gear functions through two power shafts and one intermediate shaft, along with forward, reverse, low-gear, and high-gear clutches. The four clutches are paired and located on the two power shafts, with the intermediate shaft only connecting the low-gear and high-gear gear sets. The absence of any clutches on the intermediate shaft reduces the shaft spacing between the two power shafts and the intermediate shaft, improving the circumferential space utilization of the integrated module. Furthermore, the axes of the two power shafts and the intermediate shaft are not coplanar, allowing for a three-dimensional layout rather than a planar one, further enhancing the module's structural compactness. The power steering high / low gear integrated module is connected to the four-wheel drive system via a variable-speed main transmission module, enabling multi-speed transmission to meet different usage scenarios. The main transmission module can be a six-speed or four-speed module. The front-drive module of the four-wheel drive system engages the front axle via a four-wheel drive clutch, allowing the power steering module to transmit power to the front axle through the main transmission module. The rear-drive module transmits power to the rear axle. The front-drive and rear-drive modules work together to provide front-wheel drive and rear-wheel drive for agricultural machinery. When the four-wheel drive clutch disengages from the front axle, the front axle receives no power, and only the rear-drive module transmits power to the rear axle, enabling the rear-drive module to drive the agricultural machinery in a rear-wheel drive mode. The drive mode of the four-wheel drive system can be adjusted according to different usage needs. The structure is simple and can meet the drive requirements of different driving scenarios. This invention integrates reversing and high / low gears in the three shafts of the power reversing high / low gear integration module, improving the axial and circumferential space utilization of the module and reducing the space occupied by the transmission power system. Through the cooperation of the power reversing high / low gear integration module and the four-wheel drive device, the transmission power system can integrate multiple gears and multiple drive modes, meeting the needs of different usage scenarios with a relatively simple structure.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of the gearbox power system according to the first embodiment of this utility model; Figure 2 This is a schematic diagram of the gearbox power system according to the second embodiment of the present invention; Figure 3 This is a structural schematic diagram of the gearbox power system according to the third embodiment of this utility model; Figure 4 This is a structural schematic diagram of the gearbox power system according to the fourth embodiment of this utility model; Figure 5 This is a structural schematic diagram of the gearbox power system according to the fifth embodiment of this utility model; Figure 6 This is a structural schematic diagram of the gearbox power system according to the sixth embodiment of this utility model; Figure 7 This is a schematic diagram of the PTO module structure of the gearbox power system according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the power reversing high and low gear integrated module structure of the gearbox power system according to one embodiment of the present utility model; Figure 9 This is a partial structural schematic diagram of the gearbox power system according to one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The transmission power system according to this utility model is described below with reference to the accompanying drawings.

[0020] like Figures 1 to 9As shown in the embodiment of this utility model, for agricultural machinery, the gearbox power system 100 includes a power reversing high / low gear integrated module and a four-wheel drive device. The power reversing high / low gear integrated module includes two power shafts and an intermediate shaft S2. One power shaft is equipped with a forward clutch C1 and a reverse clutch C2 for reversing, and the other power shaft is equipped with a low gear clutch C3 and a high gear clutch C4 for shifting gears. The intermediate shaft S2 is driven by a low gear set and a high gear set. One power shaft is a power input shaft S1 for connecting the drive components, and the other power shaft is a power output shaft S3. The power input shaft S1 is used to transmit power to the power output shaft S3 through the intermediate shaft S2, and the axes of the intermediate shaft S2 and the two power shafts are not coplanar. The power output shaft S3 is connected to the four-wheel drive device through a variable speed main transmission module. The four-wheel drive device includes a front drive module and a rear drive module. The front drive module is connected to the front axle of the agricultural machinery through a four-wheel drive clutch C6, which is used to engage or disengage the front axle. The rear drive module is used to transmit power to the rear axle of the agricultural machinery.

[0021] like Figure 1 As shown, in one embodiment, the forward clutch C1 and the reverse clutch C2 are arranged axially along the power shaft on the power input shaft S1, and the low-gear clutch C3 and the high-gear clutch C4 are arranged axially along the power shaft on the power output shaft S3. Figure 7 As shown, in another embodiment, the forward clutch C1 and the reverse clutch C2 are axially mounted on the power output shaft S3, while the low-gear clutch C3 and the high-gear clutch C4 are axially mounted on the power input shaft S1. It should be noted that the forward clutch C1 and the reverse clutch C2 share the same outer hub, reducing the axial space occupied by the power shaft. The fact that both the forward clutch C1 and the reverse clutch C2 are housed in the same outer hub, and the low-gear clutch C3 and the high-gear clutch C4 sharing the same outer hub, further reduces the axial space occupied by the power shaft. The integrated high and low gear power reversing module is housed within the gearbox of the agricultural machinery, and at least one of the two power shafts is located at the top of the gearbox, reducing clutch churning losses, thereby reducing the thermal power of the gearbox power system 100 and improving the overall operating efficiency of the gearbox power system 100. In one embodiment, the forward clutch C1, reverse clutch C2, low gear clutch C3, high gear clutch C4, and four-wheel drive clutch C6 can all be electro-hydraulic controlled automatic clutches. Under the control of the existing electro-hydraulic system, the engagement and disengagement of the clutches can be realized. While controlling one clutch to disengage, the other clutch can be controlled to slowly engage, realizing uninterrupted power shifting operation and improving the driver's driving comfort.

[0022] In this embodiment, the power reversing high / low gear integrated module integrates reversing and high / low gear functions through the cooperation of two power shafts and an intermediate shaft S2 with the forward clutch C1, reverse clutch C2, low gear clutch C3, and high gear clutch C4. The four clutches are paired and located on the two power shafts, with the intermediate shaft S2 only connecting the low gear set and the high gear set. The absence of any clutches on the intermediate shaft S2 reduces the shaft spacing between the two power shafts and the intermediate shaft S2, improving the circumferential space utilization of the integrated module. Furthermore, the axes of the two power shafts and the intermediate shaft S2 are not coplanar, allowing for a three-dimensional layout rather than a planar one, further enhancing the compactness of the integrated module and making its structure more efficient. The power steering high / low gear integrated module is connected to the four-wheel drive unit through a variable-speed main transmission module, enabling multi-speed transmission to meet different usage scenarios. The main transmission module can be a six-speed or four-speed module. The front-drive module of the four-wheel drive unit engages with the front axle through the four-wheel drive clutch C6, allowing the power steering module to transmit power to the front axle via the main transmission module. The rear-drive module transmits power to the rear axle. The front-drive and rear-drive modules work together to provide front-drive and rear-drive four-wheel drive for agricultural machinery. When the four-wheel drive clutch C6 disengages from the front axle, the front axle receives no power, and only the rear-drive module transmits power to the rear axle, enabling the rear-drive module to drive the agricultural machinery in a rear-drive mode. The drive mode of the four-wheel drive unit can be adjusted according to different usage needs. The structure is simple and can meet the drive requirements of different driving scenarios. In this embodiment, the three shafts in the power reversing high and low gear integration module integrate reversing and high and low gears, which improves the axial and circumferential space utilization of the power reversing high and low gear integration module, making the space occupied by the transmission power system 100 smaller. Through the cooperation of the power reversing high and low gear integration module and the four-wheel drive device, the transmission power system 100 can integrate more than 100 gears and multiple drive modes. With a relatively simple structure, it can meet the needs of different usage scenarios.

[0023] It should be noted that the gearbox power system 100 also includes a PTO module for outputting power to the implements of agricultural machinery. The PTO module includes a PTO drive shaft S9 with a PTO clutch C7. The PTO drive shaft S9 is used to engage or disengage the power input shaft S1 via the PTO clutch C7. The implements can be bulldozer blades or tillage implements, etc. In this embodiment, the PTO clutch C7 can be an electronically controlled automatic clutch. When the PTO module needs to drive the implement, power can be transmitted to the implement via the PTO drive shaft S9 by engaging the power input shaft S1 through the PTO clutch C7. When the PTO module does not need to drive the implement, the power input shaft S1 can be disengaged through the PTO clutch C7. In this embodiment, the method of connecting the power input shaft S1 to the PTO drive shaft S9 via the PTO clutch C7 is simple in structure and easy to control the opening or closing of power, while also meeting the drive requirements of agricultural machinery implements.

[0024] In one embodiment, the PTO module further includes a PTO output shaft S10 with a first PTO shifter T7. The first PTO shifter T7 has PTO gear sets with different speed ratios on both sides. The first PTO shifter T7 engages or disengages the PTO gear sets, allowing the power transmitted by the PTO drive shaft S9 to be transmitted to the implement via the PTO gear sets and the PTO output shaft S10. In this embodiment, the first PTO shifter T7 can be a synchronizer or a meshing gear sleeve. By engaging PTO gear sets with different speed ratios, the PTO module can achieve low-gear or medium-gear drive, further meeting the different usage needs of agricultural machinery.

[0025] In another embodiment, a second PTO shifter T8 is provided on the PTO drive shaft S9. The PTO module also includes a PTO high-gear set, the speed ratio of which is less than the speed ratio of the two PTO gear sets. The second PTO shifter T8 is used to engage the PTO high-gear set, so that the power transmitted by the PTO drive shaft S9 is transmitted to the PTO output shaft S10 through the PTO high-gear set. In this embodiment, the first PTO shifter T7 is provided on the PTO output shaft S10, and the second PTO shifter T8 is provided on the PTO drive shaft S9. The two shifters are located on two separate shafts, which avoids the situation where the two shafts are too long, increasing the axial space of the transmission power system 100, and improving the axial space utilization of the transmission power system 100.

[0026] Specifically, two power shafts are arranged sequentially in the horizontal direction, and an intermediate shaft S2 is arranged vertically below the two power shafts, with the intermediate shaft S2 positioned horizontally between the two power shafts. Both the horizontal and vertical directions are perpendicular to the axial directions of the power shafts. In this embodiment, the horizontal direction can be the width direction of the transmission power system 100, and the vertical direction can be the height direction of the transmission power system 100. By arranging the power input shaft S1 and the power output shaft S3 sequentially in the horizontal direction, and placing the intermediate shaft S2 below the power input shaft S1, with the axis of the intermediate shaft S2 positioned horizontally between the two intermediate shafts S2, the circumferential (including horizontal and vertical) space of the transmission power system 100 can be fully utilized.

[0027] Furthermore, the power reversing high / low gear integrated module also includes an idler shaft S4 with a reversing idler wheel. The power input shaft S1 is used to transmit power to the intermediate shaft S2 through the idler shaft S4. The axes of the power input shaft S1, intermediate shaft S2, power output shaft S3, and idler shaft S4 are all non-coplanar. In this embodiment, reversing is specifically performed through the idler shaft S4 with the reversing idler wheel, such as... Figure 1 As shown, with the reverse clutch C2 engaged, power on the power input shaft S1 can be transmitted to the idler shaft S4 via a gear set, and then transmitted from the idler shaft S4 to the intermediate shaft S2 and the power output shaft S3. By integrating the power input shaft S1, intermediate shaft S2, power output shaft S3, and idler shaft S4 into a spatial four-shaft system (S1-S4), axial dimensions are saved, and the space of the transmission power system 100 is utilized more effectively. Figure 9 As shown, in one embodiment, S1-S4 are not coplanar in both the lateral and longitudinal directions, and the four shafts are staggered in both the lateral and longitudinal directions, which greatly improves the space utilization of the transmission power system in both the lateral and longitudinal directions.

[0028] It should be noted that the main transmission module includes a main transmission output shaft S5 for transmitting power to the four-wheel drive system. Both the power output shaft S3 and the main transmission output shaft S5 are equipped with a main shifter. Each side of the main shifter has a main transmission gear set with different speed ratios. The main shifter engages with the main transmission gear sets, allowing power from the power output shaft S3 to be transmitted to the main transmission output shaft S5 via the main transmission gear sets. In this embodiment, the main transmission module and the power reversing high / low gear integration module share the power output shaft S3, simplifying the structure and reducing the production cost of the transmission powertrain 100. Furthermore, the main shifter is installed on both the power output shaft S3 and the main transmission output shaft S5 to avoid excessively long shafts. In this embodiment, the main shifter can be a synchronizer or a meshing gear sleeve.

[0029] In one embodiment, the main transmission module can perform four-speed shifting. A main shifter is provided on both the power output shaft S3 and the main transmission output shaft S5, and the two main shifters are sequentially arranged along the axial direction of the transmission power system 100. This avoids excessively large axial distance between the power output shaft S3 and the main transmission output shaft S5, improving the circumferential space utilization of the transmission power system 100. The two main shifters are designated as a first main shifter T1 and a second main shifter T2. In another embodiment, the main transmission module can perform six-speed shifting. One main shifter is provided on the power output shaft S3, and two main shifters are provided on the main transmission output shaft S5. The three main shifters are spaced apart along the axial direction of the transmission power system 100. The three main shifters are designated as a first main shifter T1, a second main shifter T2, and a third main shifter T3. In other embodiments, the number of main shifters can be set according to actual usage requirements.

[0030] Specifically, the transmission power system includes a variable-speed auxiliary transmission module, and the main transmission module is used to transmit power to the four-wheel drive device through the auxiliary transmission module. In this embodiment, the transmission power system 100 includes a power reversing high / low gear integrated module, a main transmission module, an auxiliary transmission module, and a four-wheel drive device. Through the cooperation of multiple modules, multi-speed transmission can be further realized to meet more usage scenarios. In this embodiment, the auxiliary transmission module can be a two-speed or three-speed transmission module.

[0031] In one embodiment, the transmission power system 100 further includes a creeper module capable of reducing speed and increasing torque, with the auxiliary transmission module connected to the main transmission module via the creeper module. The addition of the creeper module to the transmission power system 100 in this embodiment enables the transmission power system 100 to integrate a low-speed, high-torque function. In another embodiment, the creeper module is connected to the main transmission module via the auxiliary transmission module. The creeper module in this embodiment can shift between transmission or low-speed gears.

[0032] like Figures 1 to 3 As shown, the main transmission module is a four-speed transmission module, including a power output shaft S3, a main transmission output shaft S5, a first main shifter T1, and a second main shifter T2. The main transmission gear set includes gears 8, 9, 10, 11, 12, 13, 14, and 15. Specifically, gears 8-15 are the gear positions: 8 / 9 is 1st gear, 10 / 11 is 2nd gear, 12 / 13 is 3rd gear, and 14 / 15 is 4th gear. The synchronizer (T1 / T2) controls one pair of gears to mesh and transmit power during each gear shift.

[0033] like Figures 4 to 6As shown, the main transmission module is a six-speed transmission module, including a power output shaft S3, a main transmission output shaft S5, a first main shifter T1, a second main shifter T2, and a third main shifter T3. The main transmission gear set also includes gears 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, and 19. Specifically, gears 8-19 are the gear positions: 8 / 9 is 1st gear, 10 / 11 is 2nd gear, 12 / 13 is 3rd gear, 14 / 15 is 4th gear, 16 / 17 is 5th gear, and 17 / 18 is 6th gear. The synchronizers (T1 / T2 / T3) control one pair of gears to mesh and transmit power during each gear shift.

[0034] like Figure 1 , Figure 2 As shown, the auxiliary transmission module is a two-speed transmission module. The auxiliary transmission module and the crawler transmission module share the auxiliary transmission input shaft S7. The auxiliary transmission module includes the auxiliary transmission input shaft S7 and the auxiliary transmission output shaft S8. The auxiliary transmission output shaft S8 is equipped with a first auxiliary shifter T5. The auxiliary transmission module includes a 24-gear 24, a 25-gear 25, a 26-gear 26, and a 27-gear 27. Gears 24-27 are low and medium gears, 24 / 25 is the low gear, and 26 / 27 is the medium gear. The T5, which uses a meshing gear sleeve, controls one pair of gears to mesh and transmit power when changing gears.

[0035] like Figure 3 As shown, the auxiliary transmission module is a three-speed transmission module. The crawler transmission module and the auxiliary transmission module share the auxiliary transmission input shaft S7. The auxiliary transmission input shaft S7 serves as the output shaft of the crawler transmission module. The auxiliary transmission module includes the auxiliary transmission input shaft S7 and the auxiliary transmission output shaft S8. The auxiliary transmission input shaft S7 is equipped with a first auxiliary shifter T5, and the auxiliary transmission output shaft S8 is equipped with a second auxiliary shifter T6. The first auxiliary shifter T5 and the second auxiliary shifter T6 can be synchronized or meshing gear sleeves. The auxiliary transmission module includes 24 gears 24, 25 gears 25, 26 gears 26, 27 gears 27, 28 gears 28, and 29 gears 29. Gears 24-29 are low, medium, and high gears, respectively. 24 / 25 is the low gear, 26 / 27 is the medium gear, and 28 / 29 is the high gear. The meshing gear sleeves (T5 / T6) control one pair of gears to mesh and transmit power during each shift.

[0036] like Figure 1As shown, the climbing gear module and the auxiliary transmission module share the auxiliary transmission input shaft S7. A crawler shifter T4 is installed on the auxiliary transmission input shaft S7. The climbing gear module includes gears 20, 21, 22, and 23. The climbing gear module uses the crawler shifter T4 to complete gear switching. Under normal circumstances, the crawler shifter T4 is coupled with gear 20, and power is directly transmitted from the main transmission output shaft S5 to the auxiliary transmission input shaft S7 without deceleration. When the crawler shifter T4 is coupled with gear 22, the power transmission becomes: main transmission output shaft S5 → climbing shaft S6 → auxiliary transmission input shaft S7, during which gears 20 to 23 participate in deceleration and torque amplification.

[0037] like Figures 1 to 6 As shown, the power reversing high and low gear integrated module includes gear 1, gear 2, gear 3, gear 4, gear 5, gear 6, and gear 7. The two ends of the intermediate shaft S2 are connected to gear 2 and gear 6. Gear 1 and gear 3 are both connected to gear 2, and gear 5 and gear 7 are both connected to gear 6. The forward clutch C1 is used to engage gear 1, the reverse clutch C2 is used to engage gear 5, the low gear clutch C3 is used to engage gear 3, and the high gear clutch C4 is used to engage gear 7. The reversing idler wheel (gear 4) on the idler shaft S4 meshes with gear 5. The low gear set includes gear 1, gear 2, and gear 3, and the high gear set includes gear 5, gear 6, and gear 7.

[0038] The power transmission route of the high and low gear integrated module in high gear is as follows: the forward clutch C1 engages with gear 1, the high gear clutch C4 engages with gear 7, the power of the power input shaft S1 is transmitted to the intermediate shaft S2 through the meshing of gear 1 and gear 2, and the power of the intermediate shaft S2 is transmitted to the power output shaft S3 through the meshing of gear 6 and gear 7. The power transmission route of the power reversing high and low gear integrated module in low gear forward is as follows: forward clutch C1 engages with gear 1, low gear clutch C3 engages with gear 3, the power of power input shaft S1 is transmitted to intermediate shaft S2 through gear 1-gear 2 meshing, and the power of intermediate shaft S2 is transmitted to power output shaft S3 through gear 2-gear 3 meshing. The power transmission route of the high and low gear integrated module in high gear reverse is as follows: reverse clutch C2 engages with gear 5, high gear clutch C4 engages with gear 7, the power input shaft S1 is transmitted to idler shaft S4 through gear 5-gear 4 meshing, then to intermediate shaft S2 through gear 4-gear 6 meshing, and finally to power output shaft S3 through gear 6-gear 7 meshing; The power transmission route of the power reversing high and low gear integrated module in low gear reverse is as follows: the reverse clutch C2 engages with the fifth gear 5, the low gear clutch C3 engages with the third gear 3, the power of the power input shaft S1 is transmitted to the idler shaft S4 through the meshing of the fifth gear 5 and the fourth gear 4, and then through the fourth gear 4 and the sixth gear 6 to the intermediate shaft S2. The power of the intermediate shaft S2 is transmitted to the power output shaft S3 through the meshing of the second gear 2 and the third gear 3.

[0039] like Figure 7 As shown, in one embodiment, the PTO module is a two-speed PTO, specifically including a first PTO shifter T7, a PTO drive shaft S9, and a PTO output shaft S10. The PTO gear set includes gears 32, 33, 34, and 35. The PTO module includes low and medium gears, controlled by synchronizer T7. Gears 32-35 are the low and medium gears of the PTO, with 32 / 33 being the low gear and 34 / 35 being the medium gear, controlled by synchronizer T7. The PTO clutch C7 controls the opening and closing of the PTO; when the PTO clutch C7 is engaged, the PTO is in the open working state, and vice versa.

[0040] like Figures 1 to 6 As shown, in another embodiment, the PTO module is a three-speed PTO, specifically including a first PTO shifter T7, a second PTO shifter T8, a PTO drive shaft S9, and a PTO output shaft S10. The PTO gear set includes gears 32, 33, 34, 35, 36, and 37. The PTO module has three gears: low, medium, and high, controlled by synchronizers (T7 / T8). Gears 32-37 are the low, medium, and high gears of the PTO, with 32 / 33 being the low gear and 34 / 35 being the medium gear. The high-speed PTO gear set includes gears 36 and 37, with 36 / 37 being the high gear. Synchronizer T7 controls the low and medium gears, and synchronizer T8 controls the high gear. The PTO clutch C7 controls the opening and closing of the PTO. When the PTO clutch C7 is engaged, the PTO is in the open working state; otherwise, it is closed.

[0041] like Figure 1As shown, in one embodiment, the power input of the four-wheel drive device is the auxiliary transmission output shaft S8. The front drive module may include a front drive shaft S11, which is connected to the auxiliary transmission output shaft S8 via a 30-gear 30 and a 31-gear 31. Power is output from the front drive shaft S11, which is ultimately connected to the front axle of the agricultural machinery. A four-wheel drive clutch C6 is mounted on the front drive shaft S11 and controls whether power is input to the front axle. When the four-wheel drive clutch C6 is engaged, the front axle receives power; otherwise, it receives no power. The rear drive module may include a rear drive shaft S12 and a differential lock clutch C5. The power input of the rear drive module is the auxiliary transmission output shaft S8, and power is ultimately output from the rear drive shaft S12. The auxiliary transmission output shaft S8 and the rear drive shaft S12 contain a bevel gear differential mechanism and a planetary reduction mechanism. The differential lock clutch C5 controls the differential lock state.

[0042] This utility model also proposes an agricultural machine, which includes the gearbox power system 100 as described above. The specific structure of the gearbox power system 100 is as described in the above embodiments. Since the agricultural machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. In one embodiment, the agricultural machine can be applied to a tractor.

[0043] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gearbox power system for agricultural machinery, characterized in that, The transmission powertrain (100) includes: The power reversing high and low gear integrated module includes two power shafts and an intermediate shaft (S2). One power shaft is equipped with a forward clutch (C1) and a reverse clutch (C2) for reversing, and the other power shaft is equipped with a low gear clutch (C3) and a high gear clutch (C4) for shifting gears. The intermediate shaft (S2) is connected to a low gear set and a high gear set. One power shaft is a power input shaft (S1) for connecting a drive component, and the other power shaft is a power output shaft (S3). The power input shaft (S1) is used to transmit power to the power output shaft (S3) through the intermediate shaft (S2), and the axes of the intermediate shaft (S2) and the two power shafts are not coplanar. The four-wheel drive system includes a power output shaft (S3) connected to the four-wheel drive system via a variable-speed main transmission module. The four-wheel drive system includes a front-wheel drive module and a rear-wheel drive module. The front-wheel drive module is connected to the front axle of the agricultural machinery via a four-wheel drive clutch (C6). The four-wheel drive clutch (C6) is used to engage or disengage the front axle. The rear-wheel drive module is used to transmit power to the rear axle of the agricultural machinery.

2. The gearbox powertrain system according to claim 1, characterized in that, The gearbox power system (100) also includes a PTO module for outputting power to the implements of the agricultural machinery. The PTO module includes a PTO drive shaft (S9) with a PTO clutch (C7) for engaging or disengaging the power input shaft (S1) via the PTO clutch (C7).

3. The gearbox powertrain system according to claim 2, characterized in that, The PTO module also includes a PTO output shaft (S10) with a first PTO shifter (T7). The first PTO shifter (T7) has PTO gear sets with different speed ratios on both sides. The first PTO shifter (T7) is used to engage or disengage the PTO gear sets so that the power transmitted by the PTO drive shaft (S9) is transmitted to the working tool through the PTO gear sets and the PTO output shaft (S10).

4. The gearbox powertrain system (100) according to claim 3, characterized in that, A second PTO shifter (T8) is provided on the PTO drive shaft (S9). The PTO module also includes a PTO high-gear set. The speed ratio of the PTO high-gear set is less than the speed ratio of the two PTO gear sets. The second PTO shifter (T8) is used to engage the PTO high-gear set so that the power transmitted by the PTO drive shaft (S9) is transmitted to the PTO output shaft (S10) through the PTO high-gear set.

5. The gearbox powertrain system according to any one of claims 1 to 4, characterized in that, The two power shafts are arranged sequentially in the horizontal direction, and the intermediate shaft (S2) is arranged vertically below the two power shafts. The intermediate shaft (S2) is located between the two power shafts in the horizontal direction, and both the horizontal and vertical directions are perpendicular to the axial direction of the power shafts.

6. The gearbox powertrain system according to any one of claims 1 to 4, characterized in that, The power reversing high and low gear integrated module also includes an idler shaft (S4) with a reversing idler wheel. The power input shaft (S1) transmits power to the intermediate shaft (S2) through the idler shaft (S4). The axes of the power input shaft (S1), the intermediate shaft (S2), the power output shaft (S3), and the idler shaft (S4) are not coplanar.

7. The gearbox powertrain system according to any one of claims 1 to 4, characterized in that, The main transmission module includes a main transmission output shaft (S5) for transmitting power to the four-wheel drive device. Both the power output shaft (S3) and the main transmission output shaft (S5) are equipped with a main shifter. Both sides of the main shifter have main transmission gear sets with different speed ratios. The main shifter is used to engage the main transmission gear sets so that the power on the power output shaft (S3) is transmitted to the main transmission output shaft (S5) through the main transmission gear sets.

8. The gearbox powertrain system according to claim 7, characterized in that, The transmission power system includes a variable-speed secondary transmission module, and the primary transmission module transmits power to the four-wheel drive device through the secondary transmission module.

9. The gearbox powertrain system according to claim 8, characterized in that, The transmission power system (100) also includes a creeper module that can reduce speed and increase torque, and the auxiliary transmission module is connected to the main transmission module through the creeper module; or, The crawler module is connected to the main transmission module through the auxiliary transmission module.

10. An agricultural machine, characterized in that, The agricultural machinery includes a front axle, a rear axle, and a gearbox power system (100) as described in any one of claims 1 to 9.

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