CN115143249B - HMCVT power split transmission system and engineering machinery - Google Patents
HMCVT power split transmission system and engineering machinery Download PDFInfo
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- CN115143249B CN115143249B CN202210507420.3A CN202210507420A CN115143249B CN 115143249 B CN115143249 B CN 115143249B CN 202210507420 A CN202210507420 A CN 202210507420A CN 115143249 B CN115143249 B CN 115143249B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 87
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 10
- 230000009347 mechanical transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
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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
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
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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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
-
- 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
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
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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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- 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
- B60K25/00—Auxiliary drives
- B60K25/06—Auxiliary drives from the transmission power take-off
- B60K2025/065—Auxiliary drives from the transmission power take-off the transmission being fluidic, e.g. hydraulic
-
- 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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- 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
- F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse 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 relates to the technical field of speed changers, in particular to an HMCVT power split transmission system and engineering machinery, wherein a first parallel shaft system is provided with a first forward drive gear, a second forward drive gear, a third forward drive gear and a reverse drive gear, and is in transmission connection with a hydraulic pump assembly; the second parallel shaft system is provided with a first forward driven gear, a second forward driven gear, a third forward driven gear and a reverse driven gear set, and the hydraulic motor assembly is connected with the hydraulic pump assembly through a hydraulic pipeline; the first planet wheel assembly comprises a first gear ring, a first sun gear and a first planet wheel; the second planetary gear assembly comprises a second sun gear and a second planetary gear, and the HMCVT power split transmission system provided by the invention can realize speed change of a forward gear and seamless switching of a reverse gear by adjusting swing angle change of a swash plate of the hydraulic pump assembly, and has no power interruption point.
Description
Technical Field
The invention relates to the technical field of transmissions, in particular to an HMCVT power split transmission system and engineering machinery.
Background
Mechanical hydraulic power split continuously variable transmissions (HMCVT) offer significant advantages over manual shift transmissions and power shift transmissions. The whole vehicle is stably started when the engine runs at a low speed, so that the driving comfort is improved, meanwhile, the tractor adopting the transmission route can ensure that the continuous power output is realized under the operation condition, the unstable torque or the interruption does not exist in the acceleration and deceleration process, and the operation efficiency and the operation quality are improved; because the road conditions in the field are complex and changeable, the variable-speed transmission route can enable the tractor to realize the full power output of the engine under all driving conditions.
In the prior art, the power split stepless speed change transmission system only drives forward or backward through a parallel shafting, and a power break point exists when gear change is carried out, so that continuous output of power cannot be realized.
Disclosure of Invention
The invention aims to provide an HMCVT power split transmission system and engineering machinery, which are used for solving the problem that the continuous output of power cannot be realized because a power split stepless speed change transmission system in the prior art only drives forwards or backwards through a parallel shafting and has a power break point when gear change is carried out.
To achieve the purpose, the invention adopts the following technical scheme:
An HMCVT power split transmission system, comprising:
The hydraulic system comprises a first parallel shaft system, a first forward gear driving gear, a second forward gear driving gear, a third forward gear driving gear and a reverse gear driving gear are arranged on the first parallel shaft system, the first parallel shaft system is in transmission connection with a hydraulic pump assembly, and the first parallel shaft system can drive the hydraulic pump assembly;
The first-gear driving gear is connected with the first-gear driving gear in a driving way, the second-gear driving gear is connected with the second-gear driving gear in a driving way, the third-gear driving gear is connected with the third-gear driving gear in a driving way, and the third-gear driving gear is connected with the third-gear driving gear in a driving way;
The hydraulic motor assembly is connected with the hydraulic pump assembly through a hydraulic pipeline;
The first planetary gear assembly comprises a first gear ring, a first sun gear and a first planetary gear, wherein the first gear ring is in transmission connection with the forward second-gear driven gear, the first sun gear is in transmission connection with the second parallel shaft system, and the first planetary gear is in meshing connection between the first gear ring and the first sun gear;
The second planetary gear assembly comprises a second sun gear and a second planetary gear, and the second sun gear is in transmission connection with the hydraulic motor assembly;
The coupling planet carrier is in transmission connection with the first planet wheel and the second planet wheel, and an output driving gear is arranged on the coupling planet carrier.
Preferably, the first parallel shaft system is further provided with a forward first gear clutch, a forward second gear clutch, a forward third gear clutch and a reverse gear clutch;
the forward first-gear clutch can be used for switching on or switching off the power transmission of the first parallel shafting and the forward first-gear driving gear;
the forward second-gear clutch can be used for switching on or switching off the power transmission of the first parallel shafting and the forward second-gear driving gear;
The forward three-gear clutch can be used for switching on or switching off the power transmission of the first parallel shafting and the forward three-gear driving gear;
The reverse clutch can switch on or off the power transmission of the first parallel shafting and the reverse driving gear.
Preferably, the hydraulic pump assembly comprises a hydraulic pump driving gear, a hydraulic pump driven gear and a hydraulic pump, wherein the hydraulic pump driving gear is in transmission connection with the first parallel shafting, the hydraulic pump driven gear is in transmission connection with the hydraulic pump driving gear and can drive the hydraulic pump, and the hydraulic pump is connected with the hydraulic motor assembly through the hydraulic pipeline.
Preferably, the hydraulic motor assembly comprises a hydraulic motor, a hydraulic motor driving gear and a hydraulic motor driven gear, wherein the hydraulic motor is connected with the hydraulic pump through the hydraulic pipeline, the hydraulic motor driving gear is connected with the hydraulic motor and drives the hydraulic motor driven gear, and the hydraulic motor driven gear is connected with the second sun gear in a transmission manner.
Preferably, the device further comprises an output driven gear and an output shafting, wherein the output driven gear is connected with the output driving gear in a transmission mode and drives the output shafting to rotate.
Preferably, the output shaft is in driving connection with the rear axle.
Preferably, the reverse driven gear set comprises a reversing gear and a reverse driven gear, the reversing gear is in meshed connection with the reverse driving gear, and the reverse driven gear is in meshed connection with the reversing gear.
Preferably, the first planetary gear assembly and the second planetary gear assembly are on the same axis.
Preferably, the first parallel shafting is in driving connection with the engine.
On the other hand, the invention also provides engineering machinery, which comprises the HMCVT power split transmission system.
The invention has the beneficial effects that: the HMCVT power split transmission system provided by the invention can realize the forward and backward functions of the whole vehicle, wherein the forward direction is divided into 3 speed sections, the backward direction is divided into 1 speed section, and the stepless speed regulation of the speeds of each speed section and continuous uninterrupted power are realized by changing the swing angle of the hydraulic pump assembly; meanwhile, two groups of planetary gear trains are adopted as a speed-changing converging device, and a coupling planetary carrier is shared, so that the whole system is compact in structure, relatively simple and high in transmission efficiency. When the whole vehicle is stationary, parking can be realized through coupling of mechanical flow and hydraulic flow power.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an HMCVT power split transmission system according to the present invention.
In the figure:
1. A first parallel axis system; 11. advancing a first gear driving gear; 111. a first gear clutch; 12. advancing a second gear driving gear; 121. a forward second gear clutch; 13. advancing the three-gear driving gear; 131. forward three speed clutch; 14. a reverse gear driving gear; 141. a reverse clutch;
2. A second parallel axis; 21. advancing the first-gear driven gear; 22. advancing the second-gear driven gear; 23. advancing the three-gear driven gear; 24. a reverse driven gear set; 241. a reversing gear; 242. a reverse driven gear;
3. coupling a planet carrier; 31. an output drive gear;
41. an output driven gear; 42. an output shaft system;
10. A hydraulic pump assembly; 101. a hydraulic pump drive gear; 102. a hydraulic pump driven gear; 103. a hydraulic pump;
20. A hydraulic motor assembly; 201. a hydraulic motor; 202. a hydraulic motor drive gear; 203. a hydraulic motor driven gear;
30. A first planet assembly; 301. a first ring gear; 302. a first sun gear; 303. a first planet;
40. A second planetary gear assembly; 401. a second sun gear; 402. and a second planet wheel.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, the present embodiment provides an HMCVT power split transmission system including a first parallel shaft 1, a second parallel shaft 2, a hydraulic motor assembly 20, a first planetary gear assembly 30, a second planetary gear assembly 40, and a coupling planet carrier 3; the first parallel shafting 1 is provided with a first forward gear driving gear 11, a second forward gear driving gear 12, a third forward gear driving gear 13 and a reverse gear driving gear 14, the first parallel shafting 1 is in transmission connection with a hydraulic pump assembly 10, and the first parallel shafting 1 can drive the hydraulic pump assembly 10; the second parallel shaft system 2 is provided with a first forward driven gear 21, a second forward driven gear 22, a third forward driven gear 23 and a reverse driven gear set 24, wherein the first forward driven gear 21 is in transmission connection with the first forward driving gear 11, the second forward driven gear 22 is in transmission connection with the second forward driving gear 12, the third forward driven gear 23 is in transmission connection with the third forward driving gear 13, and the reverse driven gear set 24 is in transmission connection with the reverse driving gear 14; the hydraulic motor assembly 20 is connected to the hydraulic pump assembly 10 by a hydraulic line; the first planetary gear assembly 30 comprises a first gear ring 301, a first sun gear 302 and a first planetary gear 303, wherein the first gear ring 301 is in transmission connection with the forward second-gear driven gear 22, the first sun gear 302 is in transmission connection with the second parallel shaft system 2, and the first planetary gear 303 is in meshing connection between the first gear ring 301 and the first sun gear 302; the second planetary gear assembly 40 comprises a second sun gear 401 and a second planetary gear 402, the second sun gear 401 is in driving connection with the hydraulic motor assembly 20; the coupling planet carrier 3 is in driving connection with the first planet wheel 303 and the second planet wheel 402, the coupling planet carrier 3 is further provided with internal teeth which are meshed with the first planet wheel 402, and the coupling planet carrier 3 is provided with an output driving gear 31.
The specific working process of the HMCVT power splitting transmission system provided by the embodiment is as follows:
When the vehicle is in a first forward gear, in a mechanical transmission path, the first parallel shaft system 1 drives the first forward gear driving gear 11 to rotate, the first forward gear driving gear 11 drives the first forward gear driven gear 21 to rotate, the first forward gear driven gear 21 drives the second parallel shaft system 2 to rotate, the second parallel shaft system 2 drives the first sun gear 302, and the first sun gear 302 drives the first planet gear 303; in the hydraulic transmission path, the first parallel shaft system 1 drives the hydraulic pump assembly 10, the hydraulic pump assembly 10 drives the hydraulic motor assembly 20, the hydraulic motor assembly 20 outputs power to the second sun gear 401, the second sun gear 401 drives the second planet gear 402, the first planet gear 303 and the second planet gear 402 output power from the output driving gear 31 after being coupled through the coupling planet carrier 3, and the output speed of the hydraulic motor assembly 20 can be changed by adjusting and changing the swing angle of the hydraulic pump assembly 10 so as to change the output speed after being coupled through the coupling planet carrier 3, so that the speed regulation of one gear forward is realized.
When the planetary gear is in a second forward gear, in a mechanical transmission path, the first parallel shafting 1 drives the second forward gear driving gear 12 to rotate, the second forward gear driving gear 12 drives the second forward gear driven gear 22 to rotate, the second forward gear driven gear 22 drives the first gear ring 301 to rotate, and the first gear ring 301 drives the first planet gears 303 to rotate so as to transmit power to the coupling planet carrier 3; the hydraulic transmission path is advanced by one gear.
When the three-gear transmission mechanism is in a three-gear forward motion, in a mechanical transmission path, a first parallel shaft system 1 drives a three-gear forward motion driving gear 13 to rotate, the three-gear forward motion driving gear 13 drives a three-gear forward motion driven gear 23 to rotate, the three-gear forward motion driven gear 23 drives a second parallel shaft system 2 to rotate, the second parallel shaft system 2 drives a first sun gear 302, and the first sun gear 302 drives a first planet gear 303; the hydraulic transmission path is advanced by one gear.
In the reverse gear, in the mechanical transmission path, the first parallel shaft system 1 drives the reverse gear driving gear 14, the reverse gear driving gear 14 drives the reverse gear driven gear set 24, the reverse gear driven gear set 24 drives the second parallel shaft system 2 to rotate in the opposite direction to the forward gear, and the hydraulic transmission path is advanced by one gear.
Through the gear shifting transmission, when a driver shifts from the first forward gear to the second forward gear, the first planet gear 303 is directly driven by the second parallel shaft system 2 to be converted into the gear ring to be driven, when shifting to the third forward gear, the second parallel shaft system 2 is driven to be changed back, meanwhile, the continuous change of the rotation speed of the output shaft can be realized by matching with the continuous change state of the swashplate angle of the hydraulic pump assembly 10, the change of the first forward gear and the forward gear to the reverse gear can be switched seamlessly, the power transmission performance and the fuel economy of the vehicle can be obviously improved, and the capability of adapting to various complex road conditions can be obviously improved.
The HMCVT power split transmission system provided in this embodiment can enable the whole vehicle to realize forward and reverse functions, where the forward direction is divided into 3 speed segments, the reverse direction is divided into 1 speed segment, and by changing the swing angle of the hydraulic pump assembly 10, the rotational speed output on the coupling planet carrier 3 realizes stepless adjustment of the speeds of each speed segment and continuous power is not interrupted; meanwhile, two groups of planetary gear trains are adopted as speed-changing converging devices, and the coupling planetary carriers 3 are shared, so that the whole system is compact in structure, relatively simple and high in transmission efficiency. When the whole vehicle is stationary, parking can be realized through coupling of mechanical flow and hydraulic flow power; furthermore, the hydraulic pump assembly 10 and the hydraulic motor assembly 20 of the present embodiment respectively adopt a split variable pump and a variable motor, the spatial arrangement is flexible, the speed regulation range of the hydraulic variable unit is wide, the number of mechanical segments is reduced, and the stepless variable of the gear-shifting output rotation speed is realized.
Specifically, the first parallel shafting 1 is further provided with a forward first gear clutch 111, a forward second gear clutch 121, a forward third gear clutch 131 and a reverse gear clutch 141; the forward first-gear clutch 111 can switch on or off the power transmission of the first parallel shafting 1 and the forward first-gear driving gear 11; the forward second-gear clutch 121 can switch on or off the power transmission of the first parallel shafting 1 and the forward second-gear driving gear 12; the forward three-gear clutch 131 can switch on or off the power transmission of the first parallel shafting 1 and the forward three-gear driving gear 13; the reverse clutch 141 can switch on or off the power transmission of the first parallel shaft system 1 and the reverse drive gear 14.
Specifically, the hydraulic pump assembly 10 includes a hydraulic pump driving gear 101, a hydraulic pump driven gear 102 and a hydraulic pump 103, the hydraulic pump driving gear 101 is in transmission connection with the first parallel shaft system 1, the hydraulic pump driven gear 102 is in transmission connection with the hydraulic pump driving gear 101 and can drive the hydraulic pump 103, the hydraulic pump 103 is connected with the hydraulic motor assembly 20 through a hydraulic pipeline, further, the hydraulic motor assembly 20 includes a hydraulic motor 201, a hydraulic motor driving gear 202 and a hydraulic motor driven gear 203, the hydraulic motor 201 is connected with the hydraulic pump 103 through a hydraulic pipeline, the hydraulic motor driving gear 202 is in transmission connection with the hydraulic motor 201 and drives the hydraulic motor driven gear 203, the hydraulic motor driven gear 203 is in transmission connection with the second sun gear 401, and the smooth shifting process and the unpowered break point are realized by adjusting the swing angle of the hydraulic pump 103.
Specifically, the device further comprises an output driven gear 41 and an output shaft system 42, wherein the output driven gear 41 is in transmission connection with the output driving gear 31 and drives the output shaft system 42 to rotate, and the output shaft system 42 is in transmission connection with the rear axle so as to drive the engineering machinery.
Specifically, the reverse driven gear set 24 includes a reversing gear 241 and a reverse driven gear 242, the reversing gear 241 is in meshed connection with the reverse driving gear 14, the reverse driven gear 242 is in meshed connection with the reversing gear 241, and the reversing gear 241 can realize power transmission reversing, so as to complete reverse operation of the engineering machinery.
Specifically, the first planetary gear assembly 30 and the second planetary gear assembly 40 are on the same axis, so that the transmission coaxiality is good, the occupied space is small, and the assembly is convenient.
Specifically, the first parallel shaft system 1 is in driving connection with the engine, and changes the output power of the engine.
On the other hand, the embodiment also provides engineering machinery, which comprises the HMCVT power split transmission system, and the output rotating speed can realize stepless speed regulation of each speed section and continuous power interruption.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. An HMCVT power split transmission system, comprising:
The hydraulic transmission device comprises a first parallel shaft system (1), wherein a first forward gear driving gear (11), a second forward gear driving gear (12), a third forward gear driving gear (13) and a reverse gear driving gear (14) are arranged on the first parallel shaft system (1), the first parallel shaft system (1) is in transmission connection with a hydraulic pump assembly (10), and the first parallel shaft system (1) can drive the hydraulic pump assembly (10);
The device comprises a second parallel shaft system (2), wherein a first forward driven gear (21), a second forward driven gear (22), a third forward driven gear (23) and a reverse driven gear set (24) are arranged on the second parallel shaft system (2), the first forward driven gear (21) is in transmission connection with a first forward driving gear (11), the second forward driven gear (22) is in transmission connection with a second forward driving gear (12), the third forward driven gear (23) is in transmission connection with a third forward driving gear (13), and the reverse driven gear set (24) is in transmission connection with a reverse driving gear (14);
A hydraulic motor assembly (20) connected to the hydraulic pump assembly (10) by a hydraulic line;
The first planetary gear assembly (30) comprises a first gear ring (301), a first sun gear (302) and a first planetary gear (303), wherein the first gear ring (301) is in transmission connection with the forward second-gear driven gear (22), the first sun gear (302) is in transmission connection with the second parallel shaft system (2), and the first planetary gear (303) is in meshed connection between the first gear ring (301) and the first sun gear (302);
A second planetary gear assembly (40) comprising a second sun gear (401) and a second planetary gear (402), said second sun gear (401) being drivingly connected to said hydraulic motor assembly (20);
The coupling planet carrier (3), coupling planet carrier (3) transmission connect in first planet wheel (303) with second planet wheel (402), be provided with output driving gear (31) on coupling planet carrier (3).
2. The HMCVT power split transmission system according to claim 1, characterized in that the first parallel shaft system (1) is further provided with a forward first gear clutch (111), a forward second gear clutch (121), a forward third gear clutch (131) and a reverse gear clutch (141);
the forward first gear clutch (111) can switch on or off the power transmission of the first parallel shaft system (1) and the forward first gear driving gear (11);
The forward second-gear clutch (121) can be used for switching on or switching off the power transmission of the first parallel shafting (1) and the forward second-gear driving gear (12);
The forward three-gear clutch (131) can be used for switching on or switching off the power transmission of the first parallel shafting (1) and the forward three-gear driving gear (13);
the reverse clutch (141) can switch on or off the power transmission of the first parallel shaft system (1) and the reverse driving gear (14).
3. The HMCVT power split transmission system of claim 1, characterized in that the hydraulic pump assembly (10) comprises a hydraulic pump drive gear (101), a hydraulic pump driven gear (102) and a hydraulic pump (103), the hydraulic pump drive gear (101) being drivingly connected to the first parallel shaft system (1), the hydraulic pump driven gear (102) being drivingly connected to the hydraulic pump drive gear (101) and being capable of driving the hydraulic pump (103), the hydraulic pump (103) being connected to the hydraulic motor assembly (20) by means of the hydraulic line.
4. A HMCVT power split transmission system according to claim 3, characterized in that the hydraulic motor assembly (20) comprises a hydraulic motor (201), a hydraulic motor drive gear (202) and a hydraulic motor driven gear (203), the hydraulic motor (201) being connected to the hydraulic pump (103) by the hydraulic line, the hydraulic motor drive gear (202) being drivingly connected to the hydraulic motor (201) and driving the hydraulic motor driven gear (203), the hydraulic motor driven gear (203) being drivingly connected to the second sun gear (401).
5. The HMCVT power split transmission system of claim 1, further comprising an output driven gear (41) and an output shaft (42), wherein the output driven gear (41) is drivingly connected to the output drive gear (31) and drives rotation of the output shaft (42).
6. The HMCVT power split transmission system of claim 5, characterized in that the output shaft (42) is drivingly connected to the rear axle.
7. The HMCVT power split transmission system of claim 1, characterized in that the reverse driven gearset (24) includes a reverse gear (241) and a reverse driven gear (242), the reverse gear (241) being meshingly connected to the reverse drive gear (14), the reverse driven gear (242) being meshingly connected to the reverse gear (241).
8. HMCVT power splitting transmission according to claim 1, characterized in that the first planetary wheel assembly (30) and the second planetary wheel assembly (40) are on the same axis.
9. HMCVT power split transmission according to claim 1, characterized in that the first parallel shaft system (1) is drivingly connected to the engine.
10. A construction machine comprising an HMCVT power split transmission system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507420.3A CN115143249B (en) | 2022-05-10 | 2022-05-10 | HMCVT power split transmission system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507420.3A CN115143249B (en) | 2022-05-10 | 2022-05-10 | HMCVT power split transmission system and engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115143249A CN115143249A (en) | 2022-10-04 |
| CN115143249B true CN115143249B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210507420.3A Active CN115143249B (en) | 2022-05-10 | 2022-05-10 | HMCVT power split transmission system and engineering machinery |
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| CN (1) | CN115143249B (en) |
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| US4363247A (en) * | 1979-11-19 | 1982-12-14 | Orshansky Transmission Corporation | Transmission with a first-stage hydrostatic mode and two hydromechanical stages |
| JP2714879B2 (en) * | 1990-11-30 | 1998-02-16 | 株式会社小松製作所 | Machinery-hydraulic transmission |
| JPH09296851A (en) * | 1996-03-04 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Variable speed power transmission device |
| GB2386164A (en) * | 2002-03-06 | 2003-09-10 | Ford New Holland Nv | Hydro-mechanical transmission |
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