CN113858939A - Power transmission device - Google Patents
Power transmission device Download PDFInfo
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- CN113858939A CN113858939A CN202111170931.2A CN202111170931A CN113858939A CN 113858939 A CN113858939 A CN 113858939A CN 202111170931 A CN202111170931 A CN 202111170931A CN 113858939 A CN113858939 A CN 113858939A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 69
- 239000000969 carrier Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction 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
- 239000003638 chemical reducing agent Substances 0.000 description 1
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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
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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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
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a power transmission device which comprises a main motor, an auxiliary motor, a first brake, a second brake, a double-planet-row gear mechanism, a limited slip differential assembly, a first main input shaft, an auxiliary input shaft, a transmission shaft, a parking ratchet wheel and a first clutch, wherein the main motor and the double-planet-row gear mechanism are both arranged on the first main input shaft; the parking ratchet wheel, the auxiliary motor and the first clutch are all arranged on the auxiliary input shaft, and the auxiliary input shaft is connected with the limited slip differential assembly through an auxiliary input shaft gear ring; the limited slip differential assembly is connected with wheels. The invention has the advantages of compact structure, large transmission ratio, strong bearing capacity and the like.
Description
Technical Field
The invention relates to the technical field of vehicle power assemblies, in particular to a power transmission device.
Background
With the development of new energy automobiles, particularly the national policy of double points, opportunities are given to domestic automobile enterprises to develop pure electric vehicles vigorously. At present, pure electric vehicles in the market all adopt single-gear speed reducers with fixed speed ratios, and have the problems of high requirements on driving motors, insufficient power performance, poor economy and the like, so that the development of a multi-gear transmission which can ensure that the motors run in a high-efficiency interval to the maximum extent, and simultaneously provides stronger power and has good economy is the target of various large vehicle enterprises.
Disclosure of Invention
In view of this, the invention provides a power transmission device, which adopts a dual motor, two brakes and a dual planetary gear mechanism to realize a 2-gear speed ratio, adopts a dual planetary gear and clutch combination mode for a differential assembly to realize a limited slip function, and simultaneously provides a P-gear parking function, and has the advantages of compact structure, large transmission ratio, strong bearing capacity and the like.
The invention provides a power transmission device which comprises a main motor, an auxiliary motor, a first brake, a second brake, a double-planet-row gear mechanism, a limited slip differential assembly, a first main input shaft, an auxiliary input shaft, a transmission shaft and a first clutch, wherein the main motor is connected with the auxiliary motor through the first brake; the main motor is connected with the first main input shaft, the double-planet-row gear mechanism is arranged on the first main input shaft, the first brake and the second brake are both connected with the double-planet-row gear mechanism, the transmission shaft is sleeved outside the first main input shaft and is connected with the double-planet-row gear mechanism and the limited slip differential assembly, and the limited slip differential assembly is connected with wheels; the auxiliary motor is connected with the first clutch, the first clutch is connected with the auxiliary input shaft, and the auxiliary input shaft is connected with the limited slip differential assembly.
Further, double row planetary gear mechanism includes front sun gear, front planet carrier, front gear ring, front planet wheel, front sun gear and second main input shaft, and can with second main input shaft rotates together, the second input shaft is established outside the first main input shaft, front sun gear with front planet wheel meshes mutually, front planet wheel with front gear ring meshes mutually, front planet wheel locates on the front planet carrier, first stopper with the front planet carrier is connected, the second stopper with second main input shaft is connected.
Further, double row planetary gear mechanism still includes back row sun gear, back row planet carrier, back row ring gear and back row planet wheel, back row sun gear with first main input shaft is connected, and can with first main input shaft rotates together, back row sun gear with back row planet wheel meshes mutually, back row planet wheel with back row ring gear meshes mutually, back row planet wheel locates on the back row planet carrier, back row planet carrier with the transmission shaft is connected, back row planet carrier with the front row ring gear is connected, and can with the front row ring gear rotates together, back row ring gear with the front row planet carrier is connected, and can with the front row planet carrier rotates together.
Further, the transmission shaft is coaxially arranged with the first main input shaft and the second main input shaft, the transmission shaft is connected with a transmission shaft gear ring and can rotate together with the transmission shaft gear ring, and the transmission shaft gear ring is meshed with a differential gear ring.
Further, the auxiliary input shaft is connected with an auxiliary input shaft gear ring and can rotate together with the auxiliary input shaft gear ring, and the auxiliary input shaft gear ring is meshed with the differential gear ring.
Furthermore, the parking device also comprises a parking ratchet wheel which is arranged on the auxiliary input shaft and is connected with the auxiliary input shaft into a whole.
Further, limited slip differential assembly includes two star planet rows and second clutch, two star planet rows include sun gear, interior planet wheel, outer planet wheel and two star planet carriers, outer planet wheel with the meshing of differential ring gear, interior planet wheel with outer planet wheel and the sun gear meshing, two star planet carriers with interior planet wheel and outer planet wheel is connected, the second clutch with two star planet carriers are connected, the differential ring gear the second clutch the sun gear with two star planet carrier coaxial arrangement.
Furthermore, the limited slip differential further comprises a first support frame, a second support frame, a first output shaft and a second output shaft, wherein the first support frame and the second support frame are arranged on two opposite sides of the differential gear ring, the sun gear and the second clutch are connected with the first output shaft, the double-star planet carrier is connected with the second output shaft, and the first output shaft and the second output shaft are respectively connected with corresponding wheels.
When the first gear runs, the first brake works, the second brake does not work, the rear row gear ring is static, and the power of the main motor acts on wheels through the first main input shaft, the rear row sun gear, the rear row planet carrier, the transmission shaft gear ring, the differential gear ring and the limited slip differential assembly; and/or the power of the auxiliary motor acts on wheels through the first clutch, the auxiliary input shaft gear ring, the differential gear ring and the limited slip differential assembly.
Further, when the vehicle runs at the second gear, the first brake does not work, the second brake works, the second main input shaft is stationary, and the power of the main motor acts on the wheels through the output of the first main input shaft, the rear sun gear, the rear planet carrier, the rear gear ring, the front planet carrier, the front gear ring, the transmission shaft gear ring, the differential gear ring and the limited slip differential assembly; and/or the power of the auxiliary motor acts on wheels through the first clutch, the auxiliary input shaft gear ring, the differential gear ring and the limited slip differential assembly.
Further, when the R gear runs, the main motor is driven in a reverse rotation mode, and the power of the main motor acts on wheels through the first main input shaft, the rear row sun gear, the rear row planet carrier, the transmission shaft gear ring, the differential gear ring and the output of the limited slip differential assembly.
Compared with the prior art, the invention has the following beneficial technical effects:
the power transmission device provided by the invention adopts a double-planetary gear transmission structure and two brakes to realize a 2-gear speed ratio, and has the advantages of compact structure, large transmission ratio, strong bearing capacity and the like; the differential assembly adopts a mode of combining the double-star planetary gear and the clutch, so that the required space is smaller and the structure is more compact on the premise of meeting the function of limiting slip; the mode of combining the main motor and the auxiliary motor is adopted, the main motor works during normal running, and the double motors work simultaneously during climbing or accelerating, so that the driving motor of the pure electric vehicle can be ensured to operate in a high-efficiency interval to the maximum extent while providing strong power, and the battery endurance mileage can be increased; the parking mechanism is integrated on the auxiliary input shaft, so that the safe parking of the vehicle in a static state is effectively ensured; the auxiliary input shaft gear is meshed with the differential gear ring, so that the rotating directions of the main motor and the auxiliary motor are always kept consistent, power is provided for a vehicle through combination and separation of the clutch according to driving requirements, and the high-efficiency interval of the motor is expanded to the maximum extent.
Drawings
FIG. 1 is a schematic structural view of a power transmission device according to the present invention;
FIG. 2 is a power transmission route diagram during first gear operation according to the present invention;
FIG. 3 is a diagram of a power transmission route during the second gear operation of the present invention;
fig. 4 is a power transmission route diagram during the R range operation in the present invention.
Wherein: 10A-main motor; 10B-auxiliary motor; 20A-a first brake; 20B-a second brake; 30-double planetary gear mechanism; 31-front row sun gear; 32-front row planet carrier; 33-front row gear ring; 34-rear row sun gear; 35-rear row planet carrier; 36-rear row gear ring; 37-front row planet; 38-rear row planet; 40-a limited slip differential assembly; 41-differential ring gear; 42-double star planet row; 421-sun gear; 422-inner planet wheel; 423-outer planet; 424-double star planet carrier; 43-a first support frame; 44-a second support; 45-a first output shaft; 46-a second output shaft; 50A-a first primary input shaft; 50B-a second primary input shaft; 50C-secondary input shaft; 50C 1-secondary input shaft ring gear; 60-a transmission shaft; 61-a drive shaft gear ring; 70-a parking ratchet; 80A-a first clutch; 80B-a second clutch; 90A-a first bearing; 90B-a second bearing; 90C-third bearing.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated in the present description are based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the power transmission device of the present invention includes a primary motor 10A, a secondary motor 10B, a first brake 20A, a second brake 20B, a double planetary gear mechanism 30, a limited slip differential assembly 40, a first primary input shaft 50A, a secondary input shaft 50C, a transmission shaft 60, a parking ratchet 70 and a first clutch 80A.
The main motor 10A is connected with a first main input shaft 50A, the first brake 20A and the second brake 20B are both connected with a double-planet-row gear mechanism 30, the double-planet-row gear mechanism 30 is arranged on the first main input shaft 50A, a transmission shaft 60 is sleeved outside the first main input shaft 50A, the transmission shaft 60 is connected with the double-planet-row gear mechanism 30 and a limited slip differential assembly 40, the limited slip differential assembly 40 is connected with a wheel, and power output by the main motor 10A finally acts on the wheel; the auxiliary motor 10B is connected with the first clutch 80A, the first clutch 80A is connected with the auxiliary input shaft 50C, the parking ratchet wheel 70 is arranged on the auxiliary input shaft 50C, the auxiliary input shaft 50C is connected with the limited slip differential assembly 40, the limited slip differential assembly 40 is connected with a wheel, and finally the power output by the auxiliary motor 10B also acts on the wheel.
Specifically, the double planetary gear mechanism 30 includes a front sun gear 31, a front carrier 32, a front ring gear 33, a front planetary gear 37, a rear sun gear 34, a rear carrier 35, a rear ring gear 36, and a rear planetary gear 38. The front-row sun gear 31 and the second main input shaft 50B are connected into a whole and can rotate together with the second input shaft 50B, in this embodiment, the connection of the two elements into a whole can mean that the two elements are integrally formed or the two elements are fixedly connected together, the second input shaft 50B is sleeved outside the first main input shaft 50A, the front-row sun gear 31 is meshed with the front-row planet gear 37, the front-row planet gear 37 is meshed with the front-row gear ring 33, and the front-row planet gear 37 is arranged on the front-row planet carrier 32; the rear sun gear 34 is integrated with the first main input shaft 50A or fixedly connected with the same, the rear sun gear 34 is engaged with the rear planet gears 38, the rear planet gears 38 are engaged with the rear ring gear 36, the rear planet gears 38 are arranged on the rear planet carrier 35, the rear planet carrier 35 is integrated with the front ring gear 33 or fixedly connected with the same, and can rotate together with the front ring gear 33, and the rear ring gear 36 is integrated with the front planet carrier 32 or fixedly connected with the same, and can rotate together with the front planet carrier 32. The rear row planet carrier 35 is fixedly connected with the transmission shaft 60, and transmits the power of the main motor 10A after speed change through the double-planet-row gear structure 30.
Further, the first brake 20A is connected to the front row carrier 32, when the first brake 20A operates, the front row carrier 32 and the rear row ring gear 36 are stationary, the second brake 20B is connected to the second main input shaft 50B, when the second brake 20B operates, the second main input shaft 50B is stationary, and the first brake 20A and the second brake 20B are engaged with the double planetary gear mechanism 30, so that a 2-speed ratio can be achieved.
Further, the transmission shaft 60 is coaxially arranged with the first main input shaft 50A and the second main input shaft 50B, and is freely sleeved together, so that the structure is compact, the occupied space is small, and the middle of the transmission shaft is supported by the first bearing 90A and can freely rotate. The transmission shaft 60 is connected with the limited slip differential assembly 40 through the transmission shaft gear ring 61, the transmission shaft gear ring 61 and the transmission shaft 60 are of an integrated structure or fixedly connected and can rotate together with the transmission shaft gear ring 61, the transmission shaft gear ring 61 is meshed with the differential gear ring 41, and when the main motor 10A works, the power of the main motor 10A can be transmitted to the limited slip differential assembly 40 to finally act on wheels.
Specifically, the auxiliary input shaft 50C is rotatably supported on the transmission case through the third bearing 90C, the auxiliary input shaft 50C and the auxiliary input shaft ring gear 50C1 are of an integrated structure or fixedly connected with each other, and can rotate together with the auxiliary input shaft ring gear 50C1, the auxiliary input shaft ring gear 50C1 is meshed with the differential ring gear 41, when the auxiliary motor 10B works, the power of the auxiliary motor 10B can be transmitted to the limited slip differential assembly 40 to finally act on wheels, and the rotation directions of the main motor 10A and the auxiliary motor 10B can be ensured to be always kept consistent. The parking ratchet 70 is provided on the sub input shaft 50C and is integrated with the sub input shaft 50C or fixedly connected to the same, and the vehicle can be safely parked in a stationary state by engaging or disengaging the first clutch 80A.
Specifically, the limited slip differential assembly 40 includes a double planetary gearset 42 and a second clutch 80B, a first carrier 43, a second carrier 44, a first output shaft 45, and a second output shaft 46. The double-star planet carrier 42 comprises a sun wheel 421, an inner planet wheel 422, an outer planet wheel 423 and a double-star planet carrier 424, the outer planet wheel 423 is meshed with the differential gear ring 41, the inner planet wheel 422 is meshed with the outer planet wheel 423 and the sun wheel 421, the double-star planet carrier 424 is arranged on the inner planet wheel 422 and the outer planet wheel 423, and the second clutch 80B is connected with the double-star planet carrier 424 and can be connected with or separated from the double-star planet carrier 424 to control whether the double-star planet carrier 424 rotates or not, so that the slip limiting function of the differential is realized. The differential ring gear 41, the second clutch 80B, the sun gear 421 and the double star carrier 424 are coaxially arranged, requiring less axial space. The first support bracket 43 and the second support bracket 44 are both provided on two opposite sides of the differential ring gear 41, and the first support bracket 43 and the second support bracket 44 are both supported by the second bearing 90B. The sun gear 421 and the second clutch 80B are both connected to the first output shaft 45, the double-star planet carrier 424 is connected to the second output shaft 46, the first output shaft 45 and the second output shaft 46 are respectively connected to corresponding wheels, and the power output transmitted from the main motor 10A or the auxiliary motor 10B to the limited slip differential assembly 40 is finally applied to the wheels.
The invention can realize the 2-gear speed ratio and the reverse gear function, and the power transmission path of each gear is as follows:
referring to fig. 2, when the first gear is operated, the first brake 20A is operated, the second brake 20B is not operated, the rear gear ring 36 is stationary, and power can be output by any one of the following two power routes or by both of the two power routes:
power transmission line 1: main motor 10A → first main input shaft 50A → rear sun gear 34 → rear carrier 35 → propeller shaft 60 → propeller shaft ring gear 61 → differential ring gear 41 → limited slip differential assembly 40 → wheels.
Power transmission line 2: the electric motor 10B → the first clutch 80A → the sub input shaft 50C → the sub input shaft ring gear 50C1 → the differential ring gear 41 → the limited slip differential assembly 40 → the wheel.
Referring to fig. 3, in the second gear operation, the first brake 20A does not work, the second brake 20B works, the second main input shaft 50B is stationary, and the power can be output by any one of the following two power routes or by both of the two power routes:
power transmission line 1: main electric machine 10A → first main input shaft 50A → rear sun gear 34 → rear carrier 35 → rear ring gear 36 → front carrier 32 → front ring gear 33 → propeller shaft 60 → propeller shaft ring gear 61 → differential ring gear 41 → limited slip differential assembly 40 → wheels.
Power transmission line 2: the auxiliary electric machine 10B → the first clutch 80A → the sub input shaft 50C → the sub input shaft ring gear 50C1 → the differential ring gear 41 → the limited slip differential assembly 40 → the wheel.
Referring to fig. 4, when the R gear is in operation, the main motor 10A is driven in reverse rotation, and the power transmission route is as follows:
As can be seen from the above description, the power transmission device provided by the invention adopts a double-planetary gear transmission structure and two brakes to realize a 2-gear speed ratio, and has the advantages of compact structure, large transmission ratio, strong bearing capacity and the like; the differential assembly adopts a mode of combining the double-star planetary gear and the clutch, so that the required space is smaller and the structure is more compact on the premise of meeting the function of limiting slip; the mode of combining the main motor and the auxiliary motor is adopted, the main motor works during normal running, and the double motors work simultaneously during climbing or accelerating, so that the driving motor of the pure electric vehicle can be ensured to operate in a high-efficiency interval to the maximum extent while providing strong power, and the battery endurance mileage can be increased; the parking mechanism is integrated on the auxiliary input shaft, so that the safe parking of the vehicle in a static state is effectively ensured; the auxiliary input shaft gear is meshed with the differential gear ring, so that the rotating directions of the main motor and the auxiliary motor are always kept consistent, power is provided for a vehicle through combination and separation of the clutch according to driving requirements, and the high-efficiency interval of the motor is expanded to the maximum extent.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A power transmission device is characterized by comprising a main motor (10A), an auxiliary motor (10B), a first brake (20A), a second brake (20B), a double-planet-row gear mechanism (30), a limited slip differential assembly (40), a first main input shaft (50A), an auxiliary input shaft (50C), a transmission shaft (60) and a first clutch (80A);
the main motor (10A) is connected with the first main input shaft (50A), the double-planet-row gear mechanism (30) is arranged on the first main input shaft (50A), the first brake (20A) and the second brake (20B) are both connected with the double-planet-row gear mechanism (30), the transmission shaft (60) is sleeved outside the first main input shaft (50A), the transmission shaft (60) is connected with the double-planet-row gear mechanism (30) and the limited slip differential assembly (40), and the limited slip differential assembly (40) is connected with wheels;
the sub motor (10B) is connected to the first clutch (80A), and the first clutch (80A) is connected to the sub input shaft (50C).
2. The power transmission device according to claim 1, wherein the double planetary gear mechanism (30) comprises a front row sun gear (31), a front row planet carrier (32), a front row ring gear (33), a front row planet gear (37), the front row sun gear (31) is connected to a second main input shaft (50B) and is rotatable together with the second main input shaft (50B), the second input shaft (50B) is sleeved outside the first main input shaft (50A), the front row sun wheel (31) is meshed with the front row planet wheels (37), the front row planet wheels (37) are meshed with the front row gear ring (33), the front row planet wheels (37) are arranged on the front row planet carrier (32), the first brake (20A) is connected to the front carrier (32), and the second brake (20B) is connected to the second main input shaft (50B).
3. The power transmission device according to claim 2, wherein the double planetary gear mechanism (30) further comprises a rear sun gear (34), a rear carrier (35), a rear ring gear (36) and a rear planet gear (38), the rear sun gear (34) is connected to the first main input shaft (50A) and is capable of rotating together with the first main input shaft (50A), the rear sun gear (34) is engaged with the rear planet gear (38), the rear planet gear (38) is engaged with the rear ring gear (36), the rear planet gear (38) is provided on the rear carrier (35), the rear carrier (35) is connected to the transmission shaft (60), the rear carrier (35) is connected to the front ring gear (33) and is capable of rotating together with the front ring gear (33), the rear row of the gears (36) is connected with the front row of the planet carrier (32) and can rotate together with the front row of the planet carrier (32).
4. A power transmission device according to claim 3, characterised in that the propeller shaft (60) is arranged coaxially with the first main input shaft (50A) and the second main input shaft (50B), that the propeller shaft (60) is connected with a propeller shaft ring gear (61) and is rotatable together with the propeller shaft ring gear (61), and that the propeller shaft ring gear (61) meshes with a differential ring gear (41).
5. The power transmission device as claimed in claim 4, characterized in that the counter input shaft (50C) is connected with a counter input shaft ring gear (50C1) and is rotatable together with the counter input shaft ring gear (50C1), and the counter input shaft ring gear (50C1) is meshed with the differential ring gear (41).
6. The power transmission device according to claim 5, further comprising a parking ratchet (70), wherein the parking ratchet (70) is provided on the sub input shaft (50C) and is integrated with the sub input shaft (50C).
7. The power transmission device of claim 5, wherein the limited slip differential assembly (40) includes a double planetary row (42) and a second clutch (80B), the double-star planet row (42) comprises a sun wheel (421), an inner planet wheel (422), an outer planet wheel (423) and a double-star planet carrier (424), the outer planet gears (423) are in mesh with the differential ring gear (41), the inner planet gears (422) are in mesh with the outer planet gears (423) and the sun gear (421), the double-planet carrier (424) is connected with the inner planet wheel (422) and the outer planet wheel (423), the second clutch (80B) is connected with the double-star planet carrier (424), and the differential ring gear (41), the second clutch (80B), the sun gear (421) and the double-star planet carrier (424) are coaxially arranged.
8. The power transmission device according to claim 7, wherein the limited slip differential (40) further comprises a first support bracket (43), a second support bracket (44), a first output shaft (45), and a second output shaft (46), the first support bracket (43) and the second support bracket (44) are provided on two opposite sides of the differential ring gear (41), the sun gear (421) and the second clutch (80B) are connected to the first output shaft (45), the double star carrier (424) is connected to the second output shaft (46), and the first output shaft (45) and the second output shaft (46) are respectively connected to corresponding wheels.
9. The power transmission device according to claim 8, wherein in first gear operation, the first brake (20A) is operated, the second brake (20B) is not operated, the rear row ring gear (36) is stationary, and the power of the main motor (10A) is applied to wheels through the first main input shaft (50A), the rear row sun gear (34), the rear row carrier (35), the propeller shaft (60), the propeller shaft ring gear (61), the differential ring gear (41) and the limited slip differential assembly (40) output; and/or the power of the auxiliary motor (10B) is output and acted on wheels through the first clutch (80A), the auxiliary input shaft (50C), the auxiliary input shaft ring gear (50C1), the differential ring gear (41) and the limited slip differential assembly (40).
10. The power transmission device according to claim 8, wherein in the second gear, the first brake (20A) is not operated, the second brake (20B) is operated, the second main input shaft (50B) is stationary, and the power of the main motor (10A) is applied to wheels through the first main input shaft (50A), the rear sun gear (34), the rear carrier (35), the rear ring gear (36), the front carrier (32), the front ring gear (33), the propeller shaft (60), the propeller shaft ring gear (61), the differential ring gear (41) and the limited slip differential assembly (40); or/and the power of the auxiliary motor (10B) acts on wheels through the output of the first clutch (80A), the auxiliary input shaft (50C), the auxiliary input shaft ring gear (50C1), the differential ring gear (41) and the limited slip differential assembly (40).
11. The power transmission device according to claim 8, wherein when the R range is in operation, the main motor (10A) is driven in reverse, and the power of the main motor (10A) is output to act on wheels through the first main input shaft (50A), the rear sun gear (34), the rear carrier (35), the transmission shaft (60), the transmission shaft ring gear (61), the differential ring gear (41) and the limited slip differential assembly (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111170931.2A CN113858939A (en) | 2021-10-08 | 2021-10-08 | Power transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111170931.2A CN113858939A (en) | 2021-10-08 | 2021-10-08 | Power transmission device |
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| Publication Number | Publication Date |
|---|---|
| CN113858939A true CN113858939A (en) | 2021-12-31 |
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| CN202111170931.2A Pending CN113858939A (en) | 2021-10-08 | 2021-10-08 | Power transmission device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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