CN115056648A - Transmission system and vehicle with same - Google Patents
Transmission system and vehicle with same Download PDFInfo
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- CN115056648A CN115056648A CN202210790591.1A CN202210790591A CN115056648A CN 115056648 A CN115056648 A CN 115056648A CN 202210790591 A CN202210790591 A CN 202210790591A CN 115056648 A CN115056648 A CN 115056648A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 141
- 230000002706 hydrostatic effect Effects 0.000 description 14
- 230000002441 reversible effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
- B60K17/105—Units comprising at least a part of the gearing and a torque-transmitting axle, e.g. transaxles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0039—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising three forward speeds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention provides a transmission system and a vehicle with the same, wherein the transmission system comprises an input shaft, and the transmission system further comprises: the planetary gear train component comprises a first sun gear, a second sun gear, an outer gear ring and a planet carrier which are matched with each other, and the planet carrier is used for outputting power; the first transmission assembly is respectively connected with the input shaft and the second sun gear and comprises a hydraulic unit, so that the power of the input shaft is transmitted to the second sun gear after passing through the hydraulic unit; and the input end of the second transmission assembly is connected with the input shaft, the second transmission assembly comprises a plurality of clutches, and the output end of the second transmission assembly is selectively in transmission connection with one of the first sun gear and the outer gear ring through the plurality of clutches. The invention solves the problem that the tractor in the prior art is difficult to drive.
Description
Technical Field
The invention relates to the field of tractors, in particular to a transmission system and a vehicle with the same.
Background
At present, a tractor still mainly uses a manual transmission, the ratio of a power gear shifting tractor is less than 1 percent in China, the manual gear shifting tractor is still the main form of the tractor at present, meanwhile, the tractor matched with the manual gear shifting transmission has less market share, and is mainly concentrated on the matching sleeve of an ultra-low-horse power main engine; the share of tractors equipped with power-shifting gearboxes is more than half, while the share of tractors equipped with mechanical-hydraulic power-split Continuously Variable Transmissions (CVT) representing the top-end transmission technology of tractors is also increasing continuously.
Manual fender gearbox tractor and power gearbox tractor all need the driver to select to keep off the position according to operating condition at the actual operation in-process, have increased driver's intensity of labour, and on the other hand high horsepower tractor realizes great drive ratio for making the gearbox, and the gearbox keeps off the position and often exceeds 20 and keeps off the position, has increased the tractor and has driven the degree of difficulty, has increased driver's intensity of labour.
Disclosure of Invention
The invention mainly aims to provide a transmission system and a vehicle with the same, so as to solve the problem that a tractor in the prior art is difficult to drive.
To achieve the above object, according to one aspect of the present invention, there is provided a transmission system including an input shaft, the transmission system further including: the planetary gear train component comprises a first sun gear, a second sun gear, an outer gear ring and a planet carrier which are matched with each other, and the planet carrier is used for outputting power; the first transmission assembly is respectively connected with the input shaft and the second sun gear and comprises a hydraulic unit, so that the power of the input shaft is transmitted to the second sun gear after passing through the hydraulic unit; and the input end of the second transmission assembly is connected with the input shaft, the second transmission assembly comprises a plurality of clutches, and the output end of the second transmission assembly is selectively in transmission connection with one of the first sun gear and the outer gear ring through the plurality of clutches.
Further, the first transmission assembly further comprises: a first continuous gear connected with the input shaft; a second continuous gear meshed with the first continuous gear; and the hydraulic unit is in transmission connection with the second continuous gear and the third continuous gear respectively, and the third continuous gear is used for being in transmission connection with the second sun gear.
Further, the second continuous gear, the third continuous gear and the hydraulic units are all multiple, and the multiple hydraulic units are respectively arranged in one-to-one correspondence with the multiple second continuous gears and the multiple third continuous gears.
Further, the second continuous gear, the third continuous gear and the hydraulic unit are all two.
Further, the first transmission assembly further comprises: the fourth continuous gear is connected with the second sun gear through the first transmission shaft; wherein the third continuous gear is in transmission connection with the fourth continuous gear.
Further, the first transmission assembly further comprises: and the idle gear is arranged between the third continuous gear and the fourth continuous gear and is meshed with the third continuous gear and the fourth continuous gear respectively.
Further, the plurality of clutches further includes a third clutch, and the second transmission assembly further includes: the third clutch is respectively connected with the input shaft and the synchronizer so as to link or separate the input shaft and the synchronizer; a first gear assembly and a second gear assembly, the synchronizer being selectively connectable with one of the first gear assembly and the second gear assembly; wherein, first gear assembly and second gear assembly all are connected with outer ring gear.
Further, the first gear assembly comprises a first synchronizing gear and a second synchronizing gear which are meshed with each other, the first synchronizing gear is used for being connected with the synchronizer, and the second synchronizing gear is connected with the outer gear ring through a third transmission shaft; and/or the second gear assembly comprises a third synchronous gear, a fourth synchronous gear and a fifth synchronous gear which are meshed with each other in sequence, the third synchronous gear is used for being connected with the synchronizer, and the fifth synchronous gear is connected with the outer gear ring through a third transmission shaft.
Further, the plurality of clutches includes a first clutch, and the second transmission assembly further includes: the first clutch is respectively connected with the input shaft and the first switching gear so as to link or separate the input shaft and the first switching gear; and the first switching gear is meshed with the second switching gear, and the second switching gear is connected with the first sun gear through a second transmission shaft.
Further, the plurality of clutches further includes a second clutch, and the second transmission assembly further includes: the second clutch is respectively connected with the input shaft and the third switching gear so as to link or separate the input shaft and the third switching gear; and the fourth switching gear is connected with the first sun gear through a second transmission shaft.
Further, the transmission system further includes: the first continuous gear and the first output gear are meshed with each other, the first continuous gear is connected with the input shaft, and the first output gear is used for outputting power; and/or a second output gear and a third output gear which are meshed with each other, wherein the second output gear is connected with the planet carrier, and the third output gear is used for outputting power.
According to another aspect of the present invention, there is provided a vehicle including an engine, the vehicle further including: in the transmission system, the input shaft of the transmission system is connected with the output part of the engine.
By applying the technical scheme, the transmission system comprises an input shaft, a planetary gear train component, a first transmission component and a second transmission component, wherein the planetary gear train component comprises a first sun gear, a second sun gear, an outer gear ring and a planet carrier which are matched with each other, and the planet carrier is used for outputting power; the first transmission assembly is respectively connected with the input shaft and the second sun gear, and comprises a hydraulic unit so as to transmit the power of the input shaft to the second sun gear after passing through the hydraulic unit; the input end of the second transmission assembly is connected with the input shaft, the second transmission assembly comprises a plurality of clutches, and the output end of the second transmission assembly is selectively in transmission connection with one of the first sun gear and the outer gear ring through the plurality of clutches.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic overall construction of an embodiment of the transmission system according to the invention.
Wherein the figures include the following reference numerals:
100. an input shaft; 110. a first drive shaft; 120. a second drive shaft; 130. a third drive shaft; 10. a planetary gear train component; 11. a first sun gear; 12. a second sun gear; 13. an outer ring gear; 14. a planet carrier;
20. a first transmission assembly; 21. a first continuous gear; 22. a second continuous gear; 23. a third continuous gear; 24. a fourth continuous gear; 25. an idler pulley; 200. a hydraulic unit;
30. a second transmission assembly; 300. a clutch; 301. a first clutch; 302. a second clutch; 303. a third clutch; 31. a first gear assembly; 32. a second gear assembly; 33. a synchronizer; 311. a first synchronizing gear; 312. a second synchronizing gear; 321. a third synchronizing gear; 322. a fourth synchronizing gear; 323. a fifth synchronizing gear; 331. a first switching gear; 332. a second switching gear; 333. a third switching gear; 334. a fourth switching gear; 401. a first output gear; 402. a second output gear; 403. a third output gear.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the present invention provides a transmission system including an input shaft 100, the transmission system further including: the planetary gear train component 10 comprises a first sun gear 11, a second sun gear 12, an outer gear ring 13 and a planet carrier 14 which are matched with each other, wherein the planet carrier 14 is used for outputting power; a first transmission assembly 20, wherein the first transmission assembly 20 is respectively connected with the input shaft 100 and the second sun gear 12, the first transmission assembly 20 comprises a hydraulic unit 200, and the power of the input shaft 100 is transmitted to the second sun gear 12 after passing through the hydraulic unit 200; and a second transmission assembly 30, an input end of the second transmission assembly 30 is connected with the input shaft 100, the second transmission assembly 30 comprises a plurality of clutches 300, and an output end of the second transmission assembly 30 is selectively in transmission connection with one of the first sun gear 11 and the outer ring gear 13 through the plurality of clutches 300.
The transmission system comprises an input shaft 100, a planetary gear train component 10, a first transmission component 20 and a second transmission component 30, wherein the planetary gear train component 10 comprises a first sun gear 11, a second sun gear 12, an outer gear ring 13 and a planet carrier 14 which are matched with each other, and the planet carrier 14 is used for outputting power; the first transmission assembly 20 is respectively connected with the input shaft 100 and the second sun gear 12, the first transmission assembly 20 comprises a hydraulic unit 200, and the power of the input shaft 100 is transmitted to the second sun gear 12 after passing through the hydraulic unit 200; the input end of the second transmission assembly 30 is connected with the input shaft 100, the second transmission assembly 30 comprises a plurality of clutches 300, and the output end of the second transmission assembly 30 is selectively in transmission connection with one of the first sun gear 11 and the outer gear ring 13 through the plurality of clutches 300.
Specifically, the hydraulic unit 200 is a hydrostatic unit.
In the specific implementation process of the embodiment of the invention, the swing angle of the hydraulic pump in the hydrostatic unit is changed, so that the stepless adjustment of the speed of each speed section and the continuous power interruption of the rotation speed output by the hydraulic unit are realized, and the swing angle of the hydrostatic unit can be continuously changed in the switching process of different speed sections.
Specifically, the first transmission assembly 20 further includes: a first continuous gear 21, the first continuous gear 21 being connected to the input shaft 100; a second continuous gear 22, the second continuous gear 22 being meshed with the first continuous gear 21; and a third continuous gear 23, the hydraulic unit 200 is in transmission connection with the second continuous gear 22 and the third continuous gear 23 respectively, and the third continuous gear 23 is used for being in transmission connection with the second sun gear 12.
Specifically, the second continuous gear 22, the third continuous gear 23, and the hydraulic units 200 are all plural, and the plural hydraulic units 200 are provided in one-to-one correspondence with the plural second continuous gears 22 and the plural third continuous gears 23, respectively.
In the embodiment of the invention, the number of the second continuous gear 22, the third continuous gear 23 and the hydraulic unit 200 is two, so that the space arrangement of the whole vehicle is facilitated, the hydraulic unit with large displacement and size is replaced by two hydraulic units with relatively small displacement and size, the same function is realized, the axial size of the hydraulic unit with small displacement is small, the structure is compact, and the space arrangement is facilitated.
Specifically, the first transmission assembly 20 further includes: a fourth continuous gear 24, the fourth continuous gear 24 being connected to the second sun gear 12 via a first drive shaft 110; wherein the third continuous gear 23 is in driving connection with the fourth continuous gear 24.
Specifically, the first transmission assembly 20 further includes: and an idle gear 25, the idle gear 25 being disposed between the third continuous gear 23 and the fourth continuous gear 24, the idle gear 25 being meshed with the third continuous gear 23 and the fourth continuous gear 24, respectively.
In an embodiment of the present invention, the plurality of clutches 300 further comprises a third clutch 303, and the second transmission assembly 30 further comprises: the synchronizer 33, the third clutch 303 is connected with the input shaft 100 and the synchronizer 33 respectively to link or separate the input shaft 100 and the synchronizer 33, so as to reduce power loss through the synchronizer 33; a first gear assembly 31 and a second gear assembly 32, and a synchronizer 33 selectively connected to one of the first gear assembly 31 and the second gear assembly 32; wherein the first gear assembly 31 and the second gear assembly 32 are both connected with the outer ring gear 13.
Specifically, the first gear assembly 31 includes a first synchronizing gear 311 and a second synchronizing gear 312 which are meshed with each other, the first synchronizing gear 311 is used for connecting with the synchronizer 33, and the second synchronizing gear 312 is connected with the outer ring gear 13 through a third transmission shaft 130; and/or the second gear assembly 32 comprises a third synchronizing gear 321, a fourth synchronizing gear 322 and a fifth synchronizing gear 323 which are meshed with each other in sequence, wherein the third synchronizing gear 321 is used for being connected with the synchronizer 33, and the fifth synchronizing gear 323 is connected with the outer gear ring 13 through a third transmission shaft 130.
Specifically, the plurality of clutches 300 includes a first clutch 301, and the second transmission assembly 30 further includes: a first switching gear 331, to which the first clutch 301 is connected with the input shaft 100 and the first switching gear 331, respectively, to link or separate the input shaft 100 and the first switching gear 331; the second switching gear 332, the first switching gear 331 and the second switching gear 332 mesh with each other, and the second switching gear 332 is connected to the first sun gear 11 through the second transmission shaft 120.
In an embodiment of the present invention, the plurality of clutches 300 further includes a second clutch 302, and the second transmission assembly 30 further includes: a third switching gear 333, to which the second clutch 302 is connected with the input shaft 100 and the third switching gear 333, respectively, to interlock or separate the input shaft 100 and the third switching gear 333; and a fourth switching gear 334, the fourth switching gear 334 being connected to the first sun gear 11 through the second transmission shaft 120.
Specifically, the transmission system further includes: a first continuous gear 21 and a first output gear 401 that mesh with each other, the first continuous gear 21 being connected to the input shaft 100, the first output gear 401 being used for outputting power; and/or a second output gear 402 and a third output gear 403 which are meshed with each other, the second output gear 402 being connected with the planet carrier 14, and the third output gear 403 being used for outputting power.
In the specific implementation of the embodiment of the present invention, as shown in FIG. 1, the transmission system has the following modes of operation:
(1) a reverse gear mode: in this mode, the clutch C1 (first clutch 301), the clutch C2 (second clutch 302) are all in a disengaged state, the clutch C3 (third clutch 303) is in an engaged state, and a part of the power of the engine passes through the S1 shaft (input shaft 100) -clutch C3-synchronizer SY (synchronizer 33) -Z8 gear (third synchronizing gear 321) -Z9 gear (fourth synchronizing gear 322) -Z10 gear (fifth synchronizing gear 323) in this order, and is input to the ZR outer ring gear (outer ring gear 13) in the planetary gear set 10 by the fifth synchronizing gear 323; another part of the power of the engine passes through a Z1 gear (first continuous gear 21) -Z17 gear and a Z18 gear (second continuous gear 22) -H1 hydrostatic unit and an H2 hydrostatic unit (hydraulic unit 200) -Z15 gear and a Z16 gear (third continuous gear 23) -Z14 idler gear (idler gear 25) -Z13 gear (fourth continuous gear 24) at a time, and the power is transmitted to the second sun gear 12 in the planetary gear train by the fourth continuous gear 24, and the power of the outer ring gear 13 and the second sun gear 12 is transmitted to a Z11 gear (second output gear 402) -Z12 output gear (third output gear 403) by the ZC planetary carrier (planetary carrier 14) after being coupled in the planetary gear train assembly 10, and is transmitted to the front axle and the rear axle of the whole vehicle by the third output gear 403.
(2) A forward one-stage mode: in this mode, the C1 clutch (first clutch 301), the C3 clutch (third clutch 303) are both in a disengaged state, and the C2 clutch (second clutch 302) is in an engaged state. Part of the power of the engine is transmitted from the Z5 gear (fourth switching gear 334) to the first sun gear 11 in the planetary gear set 10 via the S1 shaft (input shaft 100) -C2 clutch-Z4 gear (third switching gear 333) -Z5 gear (fourth switching gear 334); another part of the power of the engine is transmitted to the Z11 gear (second output gear 402) through the ZC planet carrier (planet carrier 14) after being coupled in the planetary gear train assembly 10, and the second output gear 402 transmits the power to the Z12 output gear (third output gear 403) and finally to the front axle and the rear axle after being transmitted to the Z12 output gear (third output gear 403) through the Z1 gear (first continuous gear 21) -Z17 gear and Z18 gear (second continuous gear 22) -H1 hydrostatic unit and H2 hydrostatic unit (hydraulic unit 200) -Z15 gear and Z16 gear (third continuous gear 23) -Z14 idler gear (idler 25) -Z13 gear (fourth continuous gear 24).
(3) A forward two-stage mode: in this mode, the C1 clutch assembly (first clutch 301), the C2 clutch assembly (second clutch 302) are both in a disengaged state and the C3 clutch assembly (third clutch 303) is in an engaged state. Part of the power of the engine is input to the ZR outer ring gear (outer ring gear 13) in the planetary gear train assembly 10 through the S1 shaft (input shaft 100) -C3 clutch-SY synchronizer assembly (synchronizer 33) -Z6 gear (first synchronizing gear 311) -Z7 gear (second synchronizing gear 312) and the second synchronizing gear 312; another part of the power of the engine is transmitted to a Z11 gear (a second output gear 402) through a ZC planet carrier (a planet carrier 14) after being coupled in the planetary gear train assembly 10, and the second output gear 402 transmits the power to a Z12 output gear (a third output gear 403) and finally to a front axle and a rear axle of the whole vehicle after being transmitted to the Z12 output gear (a third output gear 403) through a Z1 gear (a first continuous gear 21) -a Z17 gear and a Z18 gear (a second continuous gear 22) -an H1 hydrostatic unit and an H2 hydrostatic unit (a hydraulic unit 200) -a Z15 gear and a Z16 gear (a third continuous gear 23) -a Z14 idler gear (an idler gear 25) -a Z13 gear (a fourth continuous gear 24).
As shown in figure 1, the reverse section (reverse gear mode) and the forward section of the invention adopt the same set of clutch assemblies, thereby reducing the number of internal parts of the gearbox and reducing the power loss.
(4) Three-stage mode of advance: in this mode, the C2 clutch (second clutch 302), the C3 clutch (third clutch 303) are in a disengaged state, and the C1 clutch (first clutch) is in an engaged state. A portion of the engine power passes through the S1 shaft (input shaft 100) -C1 clutch-Z2 gear (first switching gear 331) -Z3 gear (second switching gear 332) in sequence, and is transmitted by the second switching gear to the first sun gear 11 in the planetary gear set 10; another part of the power of the engine is transmitted to the Z11 gear (second output gear 402) through the ZC planet carrier (planet carrier 14) after being coupled in the planetary gear train assembly 10, and the second output gear 402 transmits the power to the Z12 output gear (third output gear 403) and finally to the front axle and the rear axle after being transmitted to the Z12 output gear (third output gear 403) through the Z1 gear (first continuous gear 21) -Z17 gear and Z18 gear (second continuous gear 22) -H1 hydrostatic unit and H2 hydrostatic unit (hydraulic unit 200) -Z15 gear and Z16 gear (third continuous gear 23) -Z14 idler gear (idler 25) -Z13 gear (fourth continuous gear 24).
(5) PTO power take off mode: the power of the engine is directly output through an S1 shaft (input shaft 100) -Z1 gear (first continuous gear 21) -Z19 gear (first output gear 401).
Wherein, PTO power take off mode refers to: the power of the tractor is output to power take-off, and the rear part of the tractor transmits rotary power to the farm tool.
In a particular implementation of an embodiment of the invention, the transmission system further comprises an electronic control unit which, when the vehicle is in a forward state, controls the synchronizer to engage with the gear Z6:
when the vehicle is in the forward stage mode, the electronic control unit controls the second clutch 302(C2) to be closed, the hydraulic unit 200 rotates from a negative maximum swing angle to a positive maximum swing angle, the rotating speed output by the hydraulic unit 200 is transmitted to Z5 and Z4 through ZS1, and as the first clutch and the second clutch are disengaged at the moment, ZR and Z2, Z3, Z6 and Z7 are in an idling state;
when the vehicle is in a forward second stage, the power output by the engine is transmitted to the hydraulic unit 200, the hydraulic unit is turned from a positive maximum swing angle to a negative maximum swing angle, the rotating speed output by the hydraulic unit 200 is output to Z7 and Z6 from ZR, when the rotating speeds of Z7 and Z6 are increased to a preset speed, the electronic control unit controls the third clutch to be closed, the third clutch and the second clutch can be synchronously closed at the moment, no gear shifting impact exists, after the gear shifting is finished, the electronic control unit controls the second clutch to be opened, and the ZS1, the Z5, the Z4, the Z2 and the Z3 are in an idling state;
when the vehicle is in a forward three-section mode, power output by an engine is transmitted to the hydraulic unit 200, the hydraulic unit is turned to a positive maximum swing angle from a negative maximum swing angle, the rotating speed output by the hydraulic unit 200 is transmitted to Z3 and Z2 from ZS1, when the rotating speed is increased to a preset speed, the electronic control unit controls the first clutch C1 to be connected, the first clutch and the third clutch can be synchronously closed at the moment, no gear shifting impact exists, after gear shifting is finished, the electronic control unit controls the third clutch to be disconnected, and at the moment, ZR and Z5, Z4, Z6 and Z7 are in an idling state.
In summary, the hydraulic unit of the transmission system of the present invention can realize continuous changes of negative maximum pivot angle-positive maximum pivot angle, positive maximum pivot angle-negative maximum pivot angle, and negative maximum pivot angle-positive maximum pivot angle, thereby realizing no power interruption adjustment and no shift shock.
When the vehicle is in reverse mode, the electronic control unit controls the synchronizer to engage Z8.
Specifically, by reasonably designing the tooth number of the gear pair, the speed ratio of the Z3/Z2 gear pair in the forward three-section mode is obviously greater than that of the Z5/Z4 gear pair in the forward one-section mode, so that the output speed of the forward three-section mode is higher than that of the forward one-section mode and the forward two-section mode, the speed ratios of the forward three-section mode and the forward two-section mode are continuous, and stepless speed change is guaranteed.
In conclusion, the transmission system of the invention uses a set of double planet row system (planetary gear train component 10), a set of synchronizer (synchronizer 33) and three sets of clutches 300 to realize 4 speed sections, so that the whole vehicle can realize the functions of forward and backward movement, and the adoption of a set of clutches can reduce the difficulty of the internal space arrangement of the transmission case and is beneficial to improving the transmission efficiency of the transmission case. The forward direction is provided with 3 speed sections, the reverse direction (reverse gear) is provided with 1 speed section, the switching of different speed sections is controlled by the combination and the separation of corresponding clutches, the hydraulic unit 200 participates in each speed section, the swing angle of the hydraulic pump in the hydrostatic unit is changed, the rotating speed output by the hydraulic unit realizes the stepless adjustment of the speed of each speed section and the continuous uninterrupted power, the swing angle of the hydrostatic unit can realize the continuous change in the switching process of different speed sections, the wear of the clutches in the switching process of different speed sections is reduced, the service life of the gearbox is prolonged, the gear shifting impact is reduced, and the driving experience is improved. Alternatively, the present application may be practiced to utilize one or more hydrostatic units of equal displacement or larger size to achieve the same transmission principles by adjusting the H1-hydrostatic unit, the H2-hydrostatic unit.
Alternatively, the same transmission principle can be achieved in this application by adding or subtracting idler gears at any gear.
Alternatively, the present application may adjust the maximum forward vehicle speed and the maximum reverse vehicle speed by increasing or decreasing the number of clutches and gear pairs.
Alternatively, the present application may implement the same power output transmission principle by adjusting the output position of the Z19 gear (first output gear 401), connecting it with other transmission shafts.
Alternatively, the present application may add clutches before and after the Z19 gear to enable control of PTO power transmission and interruption.
The present invention also provides a vehicle comprising an engine, the vehicle further comprising: in the above-described transmission system, the input shaft 100 of the transmission system is connected to the output of the engine.
The application provides a novel transmission scheme of HMCVT (hydraulic mechanical stepless speed change), helps to improve the whole level of the tractor in China, promotes the upgrading of the tractor industry, and develops mechanical hydraulic power split Continuously Variable Transmission (CVT) to help to fill up the domestic blank, so that the production of the domestic high-end high-horsepower tractor becomes possible. Meanwhile, because the transmission system adopts a fully-electrically-controlled clutch control scheme, the HMCVT tractor has lower difficulty in the fields of unmanned driving, automatic navigation and the like, and the development of the tractor to the unmanned direction is facilitated.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the transmission system comprises an input shaft 100, a planetary gear train component 10, a first transmission component 20 and a second transmission component 30, wherein the planetary gear train component 10 comprises a first sun gear 11, a second sun gear 12, an outer gear ring 13 and a planet carrier 14 which are matched with each other, and the planet carrier 14 is used for outputting power; the first transmission assembly 20 is respectively connected with the input shaft 100 and the second sun gear 12, the first transmission assembly 20 comprises a hydraulic unit 200, and the power of the input shaft 100 is transmitted to the second sun gear 12 after passing through the hydraulic unit 200; the input end of the second transmission assembly 30 is connected with the input shaft 100, the second transmission assembly 30 comprises a plurality of clutches 300, and the output end of the second transmission assembly 30 is selectively in transmission connection with one of the first sun gear 11 and the outer gear ring 13 through the plurality of clutches 300.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A transmission system comprising an input shaft (100), characterized in that the transmission system further comprises:
the planetary gear train assembly (10) comprises a first sun gear (11), a second sun gear (12), an outer gear ring (13) and a planet carrier (14) which are matched with each other, wherein the planet carrier (14) is used for outputting power;
a first transmission assembly (20), wherein the first transmission assembly (20) is respectively connected with the input shaft (100) and the second sun gear (12), and the first transmission assembly (20) comprises a hydraulic unit (200) so as to transmit the power of the input shaft (100) to the second sun gear (12) after passing through the hydraulic unit (200);
a second transmission assembly (30), an input end of the second transmission assembly (30) is connected with the input shaft (100), the second transmission assembly (30) comprises a plurality of clutches (300), and an output end of the second transmission assembly (30) is selectively in transmission connection with one of the first sun gear (11) and the outer ring gear (13) through the plurality of clutches (300).
2. The transmission system according to claim 1, wherein the first transmission assembly (20) further comprises:
a first continuous gear (21), the first continuous gear (21) being connected with the input shaft (100);
a second continuous gear (22), said second continuous gear (22) being in mesh with said first continuous gear (21);
a third continuous gear (23), the hydraulic unit (200) being in driving connection with the second continuous gear (22) and the third continuous gear (23), respectively, the third continuous gear (23) being for driving connection with the second sun gear (12).
3. The transmission system according to claim 2, wherein the second continuous gear (22), the third continuous gear (23), and the hydraulic unit (200) are each provided in plurality, and the plurality of hydraulic units (200) are provided in one-to-one correspondence with the plurality of second continuous gears (22) and the plurality of third continuous gears (23), respectively.
4. A transmission system according to claim 3, characterized in that said second continuous gear (22), said third continuous gear (23) and said hydraulic unit (200) are all two.
5. The transmission system according to claim 2, wherein the first transmission assembly (20) further comprises:
a fourth continuous gear (24), said fourth continuous gear (24) being connected to said second sun gear (12) by a first drive shaft (110);
wherein the third continuous gear (23) is in driving connection with the fourth continuous gear (24).
6. The transmission system according to claim 5, wherein the first transmission assembly (20) further comprises:
an idler gear (25), the idler gear (25) being disposed between the third and fourth continuous gears (23, 24), the idler gear (25) being in mesh with the third and fourth continuous gears (23, 24), respectively.
7. The transmission system of claim 1, wherein the plurality of clutches (300) further includes a third clutch (303), the second transmission assembly (30) further comprising:
a synchronizer (33), the third clutch (303) being connected to the input shaft (100) and the synchronizer (33) respectively to interlock or separate the input shaft (100) and the synchronizer (33);
a first gear assembly (31) and a second gear assembly (32), said synchronizer (33) being selectively connectable with one of said first gear assembly (31) and said second gear assembly (32); wherein the first gear assembly (31) and the second gear assembly (32) are both connected with the outer ring gear (13).
8. The transmission system according to claim 7,
the first gear assembly (31) comprises a first synchronizing gear (311) and a second synchronizing gear (312) which are meshed with each other, the first synchronizing gear (311) is used for being connected with the synchronizer (33), and the second synchronizing gear (312) is connected with the outer gear ring (13) through a third transmission shaft (130); and/or
The second gear assembly (32) comprises a third synchronizing gear (321), a fourth synchronizing gear (322) and a fifth synchronizing gear (323) which are meshed with each other in sequence, the third synchronizing gear (321) is used for being connected with the synchronizer (33), and the fifth synchronizing gear (323) is connected with the outer gear ring (13) through a third transmission shaft (130).
9. The transmission system of claim 1, wherein the plurality of clutches (300) includes a first clutch (301), the second transmission assembly (30) further comprising:
a first switching gear (331), the first clutch (301) being connected with the input shaft (100) and the first switching gear (331) respectively to interlock or separate the input shaft (100) and the first switching gear (331);
a second switching gear (332), wherein the first switching gear (331) is meshed with the second switching gear (332), and the second switching gear (332) is connected with the first sun gear (11) through a second transmission shaft (120).
10. The transmission system according to any one of claims 1 to 9, wherein the plurality of clutches (300) further includes a second clutch (302), the second transmission assembly (30) further comprising:
a third switching gear (333), wherein the second clutch (302) is respectively connected with the input shaft (100) and the third switching gear (333) to link or separate the input shaft (100) and the third switching gear (333);
a fourth switching gear (334), the fourth switching gear (334) being connected to the first sun gear (11) via a second transmission shaft (120).
11. The transmission system of claim 1, further comprising:
a first continuous gear (21) and a first output gear (401) that mesh with each other, the first continuous gear (21) being connected with the input shaft (100), the first output gear (401) being used for outputting power; and/or
A second output gear (402) and a third output gear (403) which are meshed with each other, wherein the second output gear (402) is connected with the planet carrier (14), and the third output gear (403) is used for outputting power.
12. A vehicle including an engine, characterized by further comprising:
a transmission system according to any one of claims 1 to 11, an input shaft (100) of the transmission system being connected to an output of the engine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210790591.1A CN115056648A (en) | 2022-07-06 | 2022-07-06 | Transmission system and vehicle with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210790591.1A CN115056648A (en) | 2022-07-06 | 2022-07-06 | Transmission system and vehicle with same |
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| CN115056648A true CN115056648A (en) | 2022-09-16 |
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| CN202210790591.1A Pending CN115056648A (en) | 2022-07-06 | 2022-07-06 | Transmission system and vehicle with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853977A (en) * | 2023-02-22 | 2023-03-28 | 潍柴动力股份有限公司 | Transmission system and transmission method |
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| CN115853977A (en) * | 2023-02-22 | 2023-03-28 | 潍柴动力股份有限公司 | Transmission system and transmission method |
| CN115853977B (en) * | 2023-02-22 | 2023-05-23 | 潍柴动力股份有限公司 | Transmission system and transmission method |
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Address after: 261001 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Applicant after: WEICHAI POWER Co.,Ltd. Applicant after: Weichai Hydraulic Transmission Co.,Ltd. Address before: 261001 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Applicant before: WEICHAI POWER Co.,Ltd. Applicant before: LINDE HYDRAULICS (CHINA) Co.,Ltd. |
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