Tractor control system based on section hydraulic stepless speed change

Abstract

The utility model relates to the field of tractor control systems, in particular to a tractor control system based on section hydraulic stepless speed change, which comprises an engine, a power unit module, a planetary hybrid module, a mechanical speed change module, a PTO (power take-off) output module and a front axle and rear axle module. The power unit module is connected with the planetary hybrid module, the planetary hybrid module is connected with the mechanical speed change module, and the problems that although the number of gears of power gear shifting is reduced, the design and control difficulty of coupling of a high-pressure and efficient hydraulic transmission system and a planetary mechanism is large, and domestic technologies are lacked in an existing liquid-mixing stepless speed change system are solved.

Description

Technical Field

[0001] This utility model relates to the field of tractor control systems, specifically a tractor control system based on segmented hydraulic continuously variable transmission. Background Technology

[0002] Tractors operate under complex and diverse conditions, and their corresponding operating speeds and traction loads are also varied and complex. During operation, tractors need to frequently change the gear ratio of the transmission by shifting gears to keep the engine in a more economical and efficient working state. Therefore, tractor transmissions typically have more than 10 forward and reverse gears, and some transmissions even have around 40 gears.

[0003] Currently, tractor products in my country primarily use an engine combined with a mechanical stepped transmission to output traction power. Internationally, tractor transmissions, in addition to mechanical stepped transmissions, utilize power shift gearboxes and continuously variable transmissions (CVTs). These products have a high degree of automation, effectively reducing the workload of operators. Furthermore, through strategic automatic shifting and gear changes, they achieve optimal automatic operation.

[0004] Because the wet clutches of power shift tractors are subject to harsh operating conditions, have a large number of wet clutches, complex shift control strategies, and high precision requirements for hydraulic control systems, the design, control, and manufacturing of the gearboxes are complex. Although the hydraulic-hybrid continuously variable transmission system reduces the number of gears in power shifting, the design and control of the high-pressure, high-efficiency hydraulic transmission system and planetary mechanism coupling are difficult. At present, my country is only in the stage of prototype production and preliminary market promotion. There is a shortage of mature applications and commercial products. Such products on the market are basically imported equipment. Utility Model Content

[0005] The purpose of this invention is to provide a tractor control system based on segmented hydraulic continuously variable transmission to solve the problems mentioned in the background art.

[0006] The technical solution of this utility model is:

[0007] The system includes a transmission system comprising an engine, a power unit module, a planetary hybrid module, a PTO output module, and front and rear axle modules. The engine's output end is connected to a first output shaft, on which a gear 102 is mounted. The power unit module includes a first power source and a second power source. The planetary hybrid module is equipped with a PTO power output hybrid clutch and a planetary gear hybrid structure. The first power source drives the PTO power output hybrid clutch, and the second power source drives the planetary gear hybrid structure. A gear 206 is mounted on the output shaft of the planetary gear hybrid structure. The PTO power output hybrid clutch has a third output shaft, on which a gear 207 is mounted. The gear 207 and the... The PTO output module is located at the other end of the third output shaft. The mechanical transmission module includes a PTO output and a fourth output shaft. The fourth output shaft is connected to the main drive axle. Gears 301, 303, 305, and 307 are arranged on the third output shaft between the PTO power output hybrid clutch and the PTO output. Gears 302, 304, 306, and 308 are arranged on the fourth output shaft. Gears 302 and 301 mesh, gears 304 and 303 mesh, gears 306 and 305 mesh, and gears 308 and 307 mesh. The front and rear axle modules are located on the main drive axle.

[0008] Further specified, the first power source is a hydraulic pump or a first motor, the second power source is a hydraulic motor or a second motor, the output end of the first power source is provided with gear 101, the engine is connected to the PTO power output hybrid clutch through a first output shaft, gear 102 meshes with gear 101, the output end of the second power source is provided with gear 103, and also includes a second output shaft, the second output shaft is connected to the planetary gear hybrid structure, gear 104 is provided on the second output shaft, gear 104 meshes with gear 103.

[0009] Further specifying, the planetary gear hybrid structure includes a 205 sun gear, a 203 gear ring, and a 204 planetary carrier. A 202 gear is disposed on the outer side of the 203 gear ring. The planetary gears on the 204 planetary carrier mesh with the internal gears of the 205 sun gear and the 203 gear ring. A 201 gear is mounted on the first output shaft located between the PTO power output hybrid clutch and the 102 gear. The 201 gear meshes with the 202 gear. The 205 sun gear is connected to the second output shaft. A 206 gear is disposed on the output shaft of the 204 planetary carrier.

[0010] Further specifying, the planetary gear hybrid structure includes a 205 sun gear, a 203 gear ring, and a 204 planetary carrier. The second output shaft is connected to the 205 sun gear. A 2021 gear is mounted on the 204 planetary carrier. A 201 gear is mounted on the first output shaft located between the PTO power output hybrid clutch and the 102 gear. The 2021 gear meshes with the 201 gear. The 205 sun gear meshes with the planetary gears on the 204 planetary carrier. The planetary gears also mesh with the internal gear of the 203 gear ring. An output shaft is mounted on the 203 gear ring, and a 206 gear is mounted on the output shaft.

[0011] Further specifying, the engine is connected to the first power source, the first power source is connected to the PTO power output hybrid clutch via a first output shaft, and the second power source is connected to the planetary gear hybrid structure via a second output shaft.

[0012] Further, it also includes a mechanical reversing module, which includes gears 209 and 210. Gear 208 is arranged on the third output shaft next to gear 207. Gear 209 is mounted on the second output shaft and meshes with gears 208 and 207 respectively.

[0013] Further specifying, the front and rear axle modules include a front drive transfer block and a rear axle drive block. The front drive transfer block includes a front drive axle and a 501 gear mounted on the front drive axle. A 502 gear and a 602 gear are mounted on the main drive axle, and the 501 gear and the 502 gear mesh with each other. The rear axle drive block includes two drive wheels on both sides and a rear drive axle. A 601 gear is provided on the rear drive axle, and the 601 gear and the 602 gear mesh with each other.

[0014] Further specifying, the front and rear axle modules include a rear axle drive block, which includes two drive wheels, a rear drive axle, and two planetary reducers. A 404 ring gear and a 406 ring gear are respectively provided on the two planetary reducers. The module also includes an active differential steering module, which includes a differential pump and a differential motor. The differential pump and the differential motor are connected. A 401 gear is provided on the differential pump, and the 401 gear meshes with the 102 gear. A 402 gear is provided on the drive end of the differential motor, and the 402 gear meshes with the 404 ring gear via a 403 gear. A transmission rod is sleeved in the inner hole of the 402 gear, and a 405 gear is provided on the other end of the transmission rod, which meshes with the 406 gear.

[0015] Further, it also includes an external battery, which is connected to the first power source and the second power source respectively.

[0016] The beneficial effects of adopting the above technical solutions are:

[0017] 1. Through modular combination, electric and hydraulic modules can be interchanged to realize the functions of hydraulic-hybrid continuously variable transmission and electric-hybrid continuously variable transmission. By setting the continuously variable transmission module, the mechanical transmission structure can be effectively reduced, thereby improving engine efficiency and reducing fuel consumption.

[0018] 2. By adding or removing the differential drive system, modularization can be achieved, enabling the switching between wheeled tractor products and tracked tractor products, thus expanding the product application range.

[0019] 3. A single planetary system is adopted. Different hydraulic and electric power take-off modules and drive modules are arranged at the three ports of the single planetary system, namely the sun, planet carrier, and gear ring, to realize the conversion of mechanical power of the engine to hydraulic power and electric power. The stepless speed regulation function of the entire transmission system is realized through the hydraulic stepless or electric stepless system.

[0020] 4. An external power supply is provided to meet the high-power power input needs of external working tools. Attached Figure Description

[0021] Figure 1 This is the A-1 configuration diagram of the hybrid transmission in this utility model;

[0022] Figure 2 This is the A-2 configuration diagram of the hybrid transmission in this utility model;

[0023] Figure 3 This is the B-1 configuration diagram of the hybrid transmission in this utility model;

[0024] Figure 4This is the B-2 configuration diagram of the hybrid transmission in this utility model;

[0025] Figure 5 This is the A-1-1 configuration diagram of the hybrid transmission in this utility model;

[0026] Figure 6 This is the B-1-1 configuration diagram of the hybrid transmission in this utility model;

[0027] Figure 7 This is the B-1-2 configuration diagram of the hybrid transmission in this utility model;

[0028] Figure 8 This is a schematic diagram of the hybrid transmission configuration diagram A-2 in this utility model, plus an external battery.

[0029] Explanation of reference numerals in the attached diagram: 1-Engine, 2-First power source, 3-Second power source, 4-PTO power output hybrid clutch, 5-First output shaft, 6-Second output shaft, 7-Third output shaft, 8-PTO output, 9-Fourth output shaft, 10-Main drive axle, 11-Front drive transfer case, 111-Front drive axle, 12-Rear axle drive block, 121-Drive wheel, 122-Rear drive axle, 123-Planetary reduction axle, 124-Active differential steering module, 125-Differential pump, 126-Differential motor, 127-External battery. Detailed Implementation

[0030] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention. Example 1

[0031] like Figure 1As shown, a tractor control system based on segmented hydraulic continuously variable transmission (CVT) includes a transmission system comprising an engine, a power unit module, a planetary hybrid module, and a mechanical transmission module. The power unit module is divided into a first power source 2 and a second power source 3, which are respectively a first motor and a second motor. The planetary hybrid module is equipped with a PTO power output hybrid clutch 4 and a planetary gear hybrid structure. The engine 1 is connected to the PTO power output hybrid clutch 4 via a first output shaft 5. Gear 102 is mounted on shaft 5. Gear 101 is mounted on the output end of the first motor. Gear 102 meshes with gear 101. Gear 103 is mounted on the output end of the second motor. The system also includes a second output shaft 6, on which gear 104 is mounted. Gear 104 meshes with gear 103. The planetary gear hybrid structure includes a sun gear 205, a ring gear 203, and a planet carrier 204. Gear 202 is mounted outside the ring gear 203. The planetary gears on the planet carrier 204 simultaneously mesh with both the sun gear 205 and the ring gear 203. The internal gears mesh. Gear 201 is mounted on the first output shaft 5 located between gears 4 and 102 of the PTO power output hybrid clutch. Gear 201 meshes with gear 202. The sun gear 205 is connected to the second output shaft 6. Gear 206 is mounted on the output shaft of the planetary carrier 204. The PTO power output hybrid clutch 4 is equipped with a third output shaft 7, on which gear 207 is mounted. Gear 207 meshes with gear 206. The mechanical transmission module also includes a PTO output 8 and a fourth output shaft 9. Output shaft 9 is connected to main drive axle 10, and PTO output 8 is connected to third output shaft 7. Gears 301, 303, 305, and 307 are installed on third output shaft 7 between PTO power output hybrid clutch 4 and PTO output 8. Gears 302, 304, 306, and 308 are installed on fourth output shaft 9. Gears 302 and 301 mesh, gears 304 and 303 mesh, gears 306 and 305 mesh, and gears 308 and 307 mesh.

[0032] Engine 1 is connected to gear 102 via first output shaft 5. Gear 102 meshes with gear 101. First motor is connected to gear 101 to achieve electric drive power take-off. Second motor is connected to the sun gear 205 of planetary hybrid system via gear 103 and gear 104 to achieve hybrid power input. At the same time, gear ring 203 meshes with gear 201 on first output shaft 5 and gear 202 on gear ring 203 to achieve engine power input. Planetary carrier 204 meshes with gear 207 on third output shaft 7 via gear 206. The hybrid power is steppedly output on fourth output shaft 9 through the engagement and switching of four sets of gears on fourth output shaft 9. Engine 1 is directly connected to the input end of PTO power output hybrid clutch 4 to achieve lossless PTO output. PTO power on / off is controlled by PTO power output hybrid clutch 4. Example 2

[0033] The difference between Example 2 and Example 1 is that: in Example 1, the first power source 2 and the second power source 3 are the first motor and the second motor, respectively, and an electric continuously variable transmission module is used; in Example 2, the first power source 2 and the second power source 3 are the hydraulic pump and the hydraulic motor, respectively, and a hydraulic continuously variable transmission module is used. Example 3

[0034] like Figure 2 As shown, the difference between Embodiment 3 and Embodiment 1 is as follows: In Embodiment 1, a 202 gear is provided on the outer side of the 203 gear ring, and the planetary gear on the 204 planetary carrier meshes with both the 205 sun gear and the internal gear of the 203 gear ring. A 201 gear is installed on the first output shaft 5 located between the PTO power output hybrid clutch 4 and the 102 gear, and the 201 gear meshes with the 202 gear. The 205 sun gear is connected to the second output shaft 6. In Embodiment 3, a 2021 gear is provided on the 204 planetary carrier, and a 201 gear is installed on the first output shaft 5 located between the PTO power output hybrid clutch 4 and the 102 gear. The 2021 gear meshes with the 201 gear, and the 205 sun gear meshes with the planetary gear on the 204 planetary carrier. The planetary gear meshes with the internal gear of the 203 gear ring. An output shaft is provided on the 203 gear ring, and a 206 gear is provided on the output shaft.

[0035] Engine 1 is connected to gear 102 via first output shaft 5. Gear 102 meshes with gear 101. First motor is connected to gear 101 to achieve electric drive power take-off. Second motor is connected to the sun gear 205 of planetary hybrid system via gear 103 and gear 104 to achieve hybrid power input. At the same time, planetary carrier 204 meshes with gear 201 on first output shaft 5 and gear 2021 on planetary carrier 204 to achieve power input to engine 1. Gear ring 203 meshes with gear 207 on third output shaft 7 via gear 206. Hybrid power is steppedly output on fourth output shaft 9 through the engagement and switching of four sets of gears on fourth output shaft 9. Engine 1 is directly connected to the input end of PTO power output hybrid clutch 4 to achieve lossless PTO output. PTO power is controlled by PTO power output hybrid clutch 4. Example 4

[0036] The difference between Example 4 and Example 3 is that in Example 3, the first power source 2 and the second power source 3 are the first motor and the second motor, respectively, and an electric continuously variable transmission module is used. In Example 4, the first power source and the second power source are the hydraulic pump and the hydraulic motor, respectively, and a hydraulic continuously variable transmission module is used.

[0037] Example 1 and Example 2 are two embodiments of the hybrid transmission A-1 configuration diagram, and Example 3 and Example 4 are hybrid transmission A-2 configuration diagrams. The main difference between the A-1 and A-2 configuration diagrams lies in the change of the planetary gear hybrid structure. Example 5

[0038] like Figure 3As shown, a tractor control system based on segmented hydraulic continuously variable transmission includes a transmission system comprising an engine, a power unit module, a planetary hybrid module, and a mechanical transmission module. The power unit module is divided into a first power source 2 and a second power source 3, which are respectively a first motor and a second motor. The planetary hybrid module is equipped with a PTO power output hybrid clutch 4 and a planetary gear hybrid structure. The engine 1 is connected to the first motor, and the first motor and the PTO power output hybrid clutch 4 are connected via a first output shaft 5. Gear 102 is mounted on the first output shaft 5, and gear 201 is mounted on the first output shaft 5 between the PTO power output hybrid clutch 4 and gear 102. The planetary gear hybrid structure includes a sun gear 205, a gear ring 203, and a planetary carrier 204. Gear 202 is located outside the gear ring 203, and the planetary gears on the planetary carrier 204 mesh with both the sun gear 205 and the internal gears of the gear ring 203. Gear 201... Gear 202 meshes with the sun gear 205, which is connected to the second motor via the second output shaft. Gear 206 is mounted on the output shaft of the planetary carrier 204. The PTO power output hybrid clutch 4 has a third output shaft 7, on which gear 207 is mounted. Gear 207 meshes with gear 206. The PTO output module is located at the other end of the third output shaft 7. The mechanical transmission module includes a PTO output and a fourth output shaft 9, which is connected to the main drive axle 10. Gears 301, 303, 305, and 307 are installed on the third output shaft 7 between the TO power output hybrid clutch 4 and the PTO output 8. Gears 302, 304, 306, and 308 are installed on the fourth output shaft 9. Gears 302 and 301 mesh, gears 304 and 303 mesh, gears 306 and 305 mesh, and gears 308 and 307 mesh. The front and rear axle modules are installed on the main drive axle 10.

[0039] Engine 1 is connected to the first motor to achieve electric drive. The first motor is connected to the PTO power output hybrid clutch 4 through the first output shaft 5. The second motor is connected to the 205 sun gear through the second output shaft to achieve hybrid power input. The planetary gear hybrid structure achieves engine power input through the meshing of gears 202 and 201 on the 203 ring gear. The 204 planetary carrier achieves stepped output of hybrid power on the fourth output shaft 9 through the meshing of gears 206 and 207 and the engagement and switching of four sets of gears on the third output shaft 7 and the fourth output shaft 9. Engine 1 is directly connected to the input end of the PTO power output hybrid clutch 4 to achieve lossless PTO output. The PTO power is controlled by the PTO power output hybrid clutch 4. Example 6

[0040] The difference between Example 6 and Example 5 is that: in Example 5, the first power source 2 and the second power source 3 are the first motor and the second motor, respectively, and an electric continuously variable transmission module is adopted; in Example 6, the first power source 2 and the second power source 3 are the hydraulic pump and the hydraulic motor, respectively, and a hydraulic continuously variable transmission module is adopted. Example 7

[0041] like Figure 4 As shown, the difference between Embodiment 7 and Embodiment 5 is that in Embodiment 6, a 202 gear is provided on the outer side of the 203 gear ring, the planetary gear on the 204 planetary carrier meshes with both the 205 sun gear and the internal gear of the 203 gear ring, a 201 gear is installed on the first output shaft 5 located between the PTO power output hybrid clutch 4 and the 102 gear, the 201 gear meshes with the 202 gear, and the 205 sun gear is connected to the second output shaft 6. In Embodiment 7, a 2021 gear is provided on the 204 planetary carrier, a 201 gear is installed on the first output shaft 5 located between the PTO power output hybrid clutch 4 and the 102 gear, the 2021 gear meshes with the 201 gear, the 205 sun gear meshes with the planetary gear on the 204 planetary carrier, the planetary gear meshes with the internal gear of the 203 gear ring, an output shaft is provided on the 203 gear ring, and a 206 gear is provided on the output shaft. Example 8

[0042] The difference between Example 8 and Example 7 is that in Example 8, the first power source 2 and the second power source 3 are the first motor and the second motor, respectively, and an electric continuously variable transmission module is adopted. In Example 7, the first power source 2 and the second power source 3 are the hydraulic pump and the hydraulic motor, respectively, and a hydraulic continuously variable transmission module is adopted.

[0043] Examples 5 and 6 are two embodiments of the hybrid transmission B-1 configuration diagram, and Examples 7 and 8 are B-2 configuration diagrams of the hybrid transmission. The main difference between the B-1 and B-2 configuration diagrams lies in the change of the planetary gear hybrid structure. Example 9

[0044] like Figure 5 As shown, Embodiment 9 is the A-1-1 configuration diagram of the hybrid transmission. The difference between the A-1-1 configuration diagram of the hybrid transmission and the A-1 configuration diagram of the hybrid transmission is that it also includes a mechanical reversing module. The mechanical reversing module includes gear 209 and gear 210. Gear 208 is arranged on the third output shaft 7 next to gear 207. Gear 209 is mounted on the second output shaft 6. Gear 209 meshes with gear 208 and gear 207 respectively.

[0045] Example 10:

[0046] like Figure 6As shown, the difference between the B-1-1 configuration diagram and the B-1 configuration diagram of the hybrid transmission is that the front and rear axle modules include a front drive transfer block 11 and a rear axle drive block 12. The front drive transfer block 11 includes a front drive axle 111 and a 501 gear mounted on the front drive axle 111. Gears 502 and 602 are mounted on the main drive axle 10, and gears 501 and 502 mesh with each other. The rear axle drive block 12 includes two drive wheels 121 on both sides and a rear drive axle 122. Gear 601 is set on the rear drive axle 122, and gears 601 and 602 mesh with each other. The planetary gear hybrid structure is directly connected to the mechanical transmission module to achieve segmented continuously variable transmission. The front drive transfer block 11 is integrated with the mechanical transmission module, and the mechanical transmission module is directly connected to the rear axle drive block 12.

[0047] Example 11:

[0048] like Figure 7 As shown, the difference between the B-1-2 configuration diagram and the B-1-1 configuration diagram of the hybrid transmission is that the front and rear axle modules only include the rear axle drive block 12. The rear axle drive block includes two drive wheels 121, a rear drive axle 122, and two planetary side reduction axles 123. 404 and 406 gear rings are respectively provided on the two planetary side reduction axles 123. It also includes an active differential steering module 124, which includes a differential pump 125 and a differential motor 126. The differential pump 125 and the differential motor 126 are connected. A 401 gear is provided on the differential pump 125, and the 401 gear meshes with the 102 gear. A 402 gear is provided on the drive end of the differential motor 126, and the 402 gear meshes with the 404 gear ring through a 403 gear. A transmission rod is sleeved in the inner hole of the 402 gear, and a 405 gear is provided on the other end of the transmission rod, which meshes with the 406 gear.

[0049] The power take-off end of the active differential steering module 124 is connected through the meshing of gear 102 and gear 401. The drive end is connected to the gear rings of the planetary side reduction bridge 123 on both sides of the rear drive module through gears 402, 403, 404, 405, and 406, respectively, to achieve active differential steering.

[0050] Example 12:

[0051] like Figure 8 As shown, it also includes an external battery 127, which is connected to the first motor and the second motor respectively. Relying on the planetary gear hybrid structure, the first power source 2 and the second power source 3 can achieve pure electric operation as drive output. In the engine working state, this configuration uses the first motor and the second motor to realize the power generation function, which can realize the power supply to external agricultural machinery.

[0052] Through modular combination, electric and hydraulic modules can be interchanged, realizing continuously variable transmission (CVT) functions for hydraulic and electric systems. By setting up CVT modules, the mechanical transmission structure can be effectively reduced, improving engine efficiency and reducing fuel consumption. Modularization of the drive differential system through addition and subtraction adjustment enables switching between wheeled and tracked tractor products, expanding the product application range. By adopting a single planetary system, different hydraulic and electric power take-off modules and drive modules are arranged at the sun, planet carrier, and gear ring ports of the single planetary system, realizing the conversion of engine mechanical power to hydraulic and electric power. Through hydraulic or electric CVT systems, the stepless speed regulation function of the entire transmission system is realized.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tractor control system based on segmented hydraulic continuously variable transmission, characterized in that: The system includes a transmission system comprising an engine (1), a power unit module, a planetary hybrid module, a mechanical transmission module, a PTO output module, and a front and rear axle module. The output end of the engine is connected to a first output shaft (5), on which a 102 gear is mounted. The engine is connected to a PTO power output hybrid clutch (4) via the first output shaft (5). The power unit module includes a first power source (2) and a second power source (3). The planetary hybrid module is equipped with a PTO power output hybrid clutch (4) and a planetary gear hybrid structure. The first power source (2) drives the PTO power output hybrid clutch (4), and the second power source (3) drives the planetary gear hybrid structure. A 206 gear is mounted on the output shaft of the planetary gear hybrid structure. The PTO power output hybrid clutch (4) is equipped with a third output shaft (7). A 207 gear is provided on the output shaft (7), and the 207 gear meshes with the 206 gear. The PTO output module is located at the other end of the third output shaft (7). The mechanical transmission module includes a PTO output and a fourth output shaft (9). The fourth output shaft (9) is connected to the main drive axle (10). A 301 gear, a 303 gear, a 305 gear, and a 307 gear are provided on the third output shaft (7) between the PTO power output hybrid clutch (4) and the PTO output. A 302 gear, a 304 gear, a 306 gear, and a 308 gear are provided on the fourth output shaft (9). The 302 gear meshes with the 301 gear, the 304 gear meshes with the 303 gear, the 306 gear meshes with the 305 gear, and the 308 gear meshes with the 307 gear. The front axle and rear axle modules are located on the main drive axle (10).

2. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 1, characterized in that: The first power source (2) is a hydraulic pump or a first motor, and the second power source (3) is a hydraulic motor or a second motor. The output end of the first power source (2) is provided with a 101 gear. The engine (1) is connected to the PTO power output hybrid clutch (4) through the first output shaft (5). The 102 gear and the 101 gear mesh with each other. The output end of the second power source (3) is provided with a 103 gear and also includes a second output shaft (6). The second output shaft (6) is connected to the planetary gear hybrid structure. The second output shaft (6) is provided with a 104 gear, and the 104 gear and the 103 gear mesh with each other.

3. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 2, characterized in that: The planetary gear hybrid structure includes a 205 sun gear, a 203 gear ring, and a 204 planetary carrier. A 202 gear is provided on the outer side of the 203 gear ring. The planetary gears on the 204 planetary carrier mesh with the internal gears of the 205 sun gear and the 203 gear ring. A 201 gear is installed on the first output shaft (5) located between the PTO power output hybrid clutch (4) and the 102 gear. The 201 gear meshes with the 202 gear. The 205 sun gear is connected to the second output shaft (6). A 206 gear is provided on the output shaft of the 204 planetary carrier.

4. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 2, characterized in that: The planetary gear hybrid structure includes a 205 sun gear, a 203 gear ring, and a 204 planetary carrier. The second output shaft (6) is connected to the 205 sun gear. A 2021 gear is provided on the 204 planetary carrier. A 201 gear is installed on the first output shaft (5) located between the PTO power output hybrid clutch (4) and the 102 gear. The 2021 gear meshes with the 201 gear. The 205 sun gear meshes with the planetary gear on the 204 planetary carrier. The planetary gear meshes with the internal gear of the 203 gear ring. An output shaft is provided on the 203 gear ring, and a 206 gear is provided on the output shaft.

5. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 1, characterized in that: The engine (1) is connected to the first power source (2), the first power source (2) is connected to the PTO power output hybrid clutch (4) through the first output shaft (5), and the second power source (3) is connected to the planetary gear hybrid structure through the second output shaft (6).

6. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 3, characterized in that: It also includes a mechanical reversing module, which includes gear 209 and gear 210. Gear 208 is provided on the third output shaft (7) next to gear 207. Gear 209 is installed on the second output shaft (6) and meshes with gear 208 and gear 207 respectively.

7. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 5, characterized in that: The front and rear axle modules include a front drive transfer block (11) and a rear axle drive block (12). The front drive transfer block includes a front drive axle (111) and a 501 gear mounted on the front drive axle (111). A 502 gear and a 602 gear are mounted on the main drive axle (10). The 501 gear and the 502 gear mesh with each other. The rear axle drive block (12) includes two drive wheels (121) on both sides and a rear drive axle (122). A 601 gear is provided on the rear drive axle (122). The 601 gear and the 602 gear mesh with each other.

8. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 5, characterized in that: The front and rear axle modules include a rear axle drive block (12), which includes two drive wheels (121), a rear drive axle (122), and two planetary reducers (123). A 404 gear ring and a 406 gear ring are respectively provided on the two planetary reducers (123). The module also includes an active differential steering module (124), which includes a differential pump (125) and a differential motor (126). The differential pump (125) is connected to the differential motor (126) and is provided with a gear 401. The gear 401 meshes with the gear 102. The drive end of the differential motor (126) is provided with a gear 402. The gear 402 meshes with the gear ring 404 through a gear 403. A transmission rod is sleeved in the inner hole of the gear 402. The other end of the transmission rod is provided with a gear 405. The gear 405 meshes with the gear ring 406.

9. A tractor control system based on segmented hydraulic continuously variable transmission according to claim 2, characterized in that: It also includes an external battery (127), which is connected to the first power source (2) and the second power source (3) respectively.

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