CN214215454U - Power assembly, driving hub and vehicle - Google Patents
Power assembly, driving hub and vehicle Download PDFInfo
- Publication number
- CN214215454U CN214215454U CN202023323924.5U CN202023323924U CN214215454U CN 214215454 U CN214215454 U CN 214215454U CN 202023323924 U CN202023323924 U CN 202023323924U CN 214215454 U CN214215454 U CN 214215454U
- Authority
- CN
- China
- Prior art keywords
- output shaft
- gear
- output
- clutch
- planetary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structure Of Transmissions (AREA)
Abstract
The utility model relates to the technical field of power, concretely relates to power assembly, drive wheel hub and vehicle, power assembly includes the output group of two sets of mirror image settings, output group includes driving motor and derailleur, driving motor includes first output shaft, first output shaft is connected with the derailleur transmission; the transmission includes a second output shaft; four shafts of a first output shaft and a second output shaft of the two output groups are positioned on the same axis; the utility model discloses a differential function can be guaranteed again in the time of two sets of output group, realization no mechanical differential structure, and is through two sets of the first output shaft of output group, second output shaft four-axis are located the same axis to and the output group of mirror image setting, can guarantee that the weight distribution of assembly is more even, promote stability.
Description
Technical Field
The utility model relates to a power technology field, concretely relates to power assembly, drive wheel hub and vehicle.
Background
As shown in fig. 1, a pure electric vehicle usually adopts a centralized transmission scheme, and a fixed-speed-ratio speed reducer FG inputs power through a driving motor M, outputs the power to two half shafts through a differential D, and then drives wheels to drive the vehicle.
The centralized transmission system usually adopts a split type, single-speed-ratio and parallel-shaft power assembly, namely, a driving motor and a speed reducer are not integrated by adopting a common shell, and a driving motor flange and a speed reducer flange are connected together by bolts; the speed reducer has only one speed ratio, and cannot give consideration to acceleration/climbing performance and the highest speed; the output shaft of the driving motor (namely the input shaft of the speed reducer) is not coaxial with the output shaft of the speed reducer, namely the speed reducer has a total center distance. A typical single-speed-ratio parallel shaft speed reducer is shown in FIG. 2, and is separated from a driving motor, and the speed inside the speed reducer is reduced through two stages of cylindrical gears, so that a differential mechanism is integrated.
Wherein:
1 is an input shaft gear which is usually connected with a rotating shaft of a driving motor through a spline so as to receive power transmitted from the driving motor;
2 is a middle shaft gear which is fixed on the middle shaft teeth and is meshed with the gear on the input shaft teeth;
3 is a middle shaft gear;
4 is a main reducing gear which is meshed with a gear on a gear shaft of the intermediate shaft;
and 5, a differential side gear which transmits power to wheels through a half shaft.
Along with the improvement of the performance requirement of the whole vehicle on the power assembly and the requirement on the space size of the power assembly, the integration of the power assembly and the multi-gear of the speed reducer are development trends.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a power assembly, a driving wheel hub and a vehicle which can ensure the differential function when a mechanical differential structure is cancelled are provided.
In order to solve the technical problem, the utility model discloses a first technical scheme be:
providing a power assembly, which comprises two output groups arranged in a mirror image mode, wherein each output group comprises a driving motor and a transmission, the driving motor comprises a first output shaft, and the first output shaft is in transmission connection with the transmission; the transmission includes a second output shaft;
the four shafts of the first output shaft and the second output shaft of the two output groups are positioned on the same axis.
In order to solve the technical problem, the utility model discloses a second kind technical scheme be:
a driving hub comprises a hub body, wherein the output group is arranged in the hub body.
In order to solve the above technical problem, the utility model discloses a third kind technical scheme be:
a vehicle comprises a plurality of power assemblies and/or driving hubs.
The beneficial effects of the utility model reside in that: through two sets of output group, can guarantee the differential function again when realizing not having mechanical differential structure, through two sets of first output shaft, the second output shaft four-axis of output group are located same axis to and the output group that the mirror image set up, can guarantee that the weight distribution of assembly is more even, promotes stability.
Drawings
FIG. 1 is a schematic diagram of a prior art centralized drive train scheme;
FIG. 2 is a prior art single ratio parallel axis reducer solution;
FIG. 3 is a schematic illustration of a powertrain according to a first embodiment of the present application;
FIG. 4 is a schematic illustration of a powertrain according to a second embodiment of the present application;
FIG. 5 is a schematic view of a drive hub according to a third embodiment of the present application;
FIG. 6 is a schematic illustration of a vehicle according to a fourth embodiment of the present application;
FIG. 7 is a schematic view of a compound planetary row of Ravigneavx;
description of reference numerals: 10. a first clutch; 11. a second clutch; 12. a first sun gear; 13. an outer planetary gear; 14. an outer planet row gear ring; 15. a second sun gear; 16. an inner planetary gear; 17. a stator; 18. a rotor; 19. a housing; 20. a third sun gear; 21. a third ring gear; 22. a third planetary gear; 30. a hub body; 40. a vehicle; 41. and (7) wheels.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the power assembly of the present invention includes two output groups arranged in mirror image, where the output group includes a driving motor and a transmission, the driving motor includes a first output shaft, and the first output shaft is in transmission connection with the transmission; the transmission includes a second output shaft;
the four shafts of the first output shaft and the second output shaft of the two output groups are positioned on the same axis.
From the above description, through two sets of output group, can guarantee the differential function again when realizing not having mechanical differential structure, through two sets of first output shaft, the second output shaft four-axis of output group are located same axis to and the output group that the mirror image set up, can guarantee that the weight distribution of assembly is more even, promotes stability.
Further, the transmission includes a first planetary row, a second planetary row, a first clutch 10 and a second clutch 11;
the first planet row comprises a first sun gear 12, an outer planet gear 13 and an outer planet row ring gear 14;
the second planetary row comprises a second sun gear 15, a second planet carrier and inner planet gears 16;
the first output shaft is in transmission connection with a second planet row sun gear; the inner planetary gear 16 is connected to the second planet carrier; the first clutch 10 is in transmission connection with the second planet carrier; the outer planetary gear 13 is in transmission connection with the second clutch 11 through the first sun gear 12; the inner planetary gear 16 and the outer planetary gear 13 are arranged between the second sun gear 15 and the outer planet row ring gear 14;
the outer planet row ring gear 14 is in transmission connection with a second output shaft.
Further, the first planet row and the second planet row are combined into a ravigneaux compound planet row.
From the above description, it can be seen that the weight and volume of the axle can be further reduced by combining the first planetary row and the second planetary row into a ravigneaux compound planetary row.
Further, the transmission further includes a third planetary row including a third sun gear 20, a third ring gear 21, a third carrier, and third planetary gears 22;
the outer planet row gear ring 14 is in transmission connection with a third sun gear 20; the third planetary gears 22 are located between the third sun gear 20 and the third ring gear 21, and the third planetary gears 22 are in transmission connection with the second output shaft through a third planet carrier.
Further, the first clutch 10 is one of a multi-plate clutch, a band brake or a dog clutch;
the second clutch 11 is one of a multi-plate clutch, a band brake, or a dog clutch.
Further, the driving motor comprises a stator 17 and a rotor 18, and the first output shaft is in transmission connection with the rotor 18;
the rotor 18, the first output shaft and the second output shaft are located on the same axis.
Further, the power assembly further comprises a shell 19, and the two output sets are integrated in the shell 19.
From the above description, it can be known that by integrating the two output sets in the same housing 19, the common housing 19 is realized, so that the weight and volume of the axle can be reduced, and the power density can be improved.
A driving hub comprises a hub body 30, and an output group is arranged in the hub body 30.
A vehicle 40 comprising a plurality of drive units as described in any one of the preceding claims and/or a drive hub as described above.
Furthermore, four wheels 41 are included, and the power assembly has two groups; the four second output shafts of the two groups of power assemblies are in transmission connection with four wheels 41 respectively.
Example one
A power assembly comprises two output groups arranged in a mirror image mode, wherein each output group comprises a driving motor and a transmission, the driving motor comprises a first output shaft, and the first output shaft is in transmission connection with the transmission; the transmission includes a second output shaft;
the four shafts of the first output shaft and the second output shaft of the two output groups are positioned on the same axis.
The transmission comprises a first planetary row, a second planetary row, a first clutch 10 and a second clutch 11;
the first planet row comprises a first sun gear 12, an outer planet gear 13 and an outer planet row ring gear 14;
the second planetary row comprises a second sun gear 15, a second planet carrier and inner planet gears 16;
the first output shaft is in transmission connection with a second planet row sun gear; the inner planetary gear 16 is connected to the second planet carrier; the first clutch 10 is in transmission connection with the second planet carrier; the outer planetary gear 13 is in transmission connection with the second clutch 11 through the first sun gear 12; the inner planetary gear 16 and the outer planetary gear 13 are arranged between the second sun gear 15 and the outer planet row ring gear 14;
the outer planet row ring gear 14 is in transmission connection with a second output shaft.
The first planet row and the second planet row are combined into a Lavenner composite planet row.
The first clutch 10 is one of a multi-plate clutch, a band brake or a dog tooth clutch;
the second clutch 11 is one of a multi-plate clutch, a band brake, or a dog clutch.
The driving motor comprises a stator 17 and a rotor 18, and the first output shaft is in transmission connection with the rotor 18;
the rotor 18, the first output shaft and the second output shaft are located on the same axis.
The power assembly further comprises a housing 19, and the two output sets are integrated in the housing 19.
Example two
A power assembly similar to the first embodiment will not be described in detail, wherein
The transmission further comprises a third planetary row comprising a third sun gear 20, a third ring gear 21, a third planet carrier and third planet gears 22;
the outer planet row gear ring 14 is in transmission connection with a third sun gear 20; the third planetary gears 22 are located between the third sun gear 20 and the third ring gear 21, and the third planetary gears 22 are in transmission connection with the second output shaft through a third planet carrier.
EXAMPLE III
A driving hub comprises a hub body 30, and an output group in the first embodiment or the second embodiment is arranged in the hub body 30.
Example four
A vehicle comprises four wheels and two groups of power assemblies in the first embodiment or the second embodiment;
and four second output shafts of the two groups of power assemblies are respectively in transmission connection with four wheels.
Two speed ratios are achieved with the Ravigneavx compound planetary row (i.e., the first planetary row and the second planetary row) and the first clutch (B1) and the second clutch (B2). As shown in Table 1, when the driving motor rotates forward, B1 is closed and B2 is opened simultaneously, the vehicle moves forward and is in the larger speed ratio i of the two gears1(gear D1); when the driving motor rotates forwards, the brake B2 is closed, the brake B1 is opened simultaneously, and the vehicle moves forwards and is in the lower speed ratio i of two gears2(gear D2); vehicle back (R)The driving motor is reversely rotated, and B1 is closed, and B2 is opened.
Meter-gear control
| B1 | B2 | Driving motor | |
| D1 | √ | Forward rotation | |
| D2 | √ | Forward rotation | |
| R | √ | Reverse rotation |
When the gear is shifted, one clutch is opened while the other clutch is simultaneously combined, so that the continuous and stable output power can be ensured. Therefore, power gear shifting can be realized, the gear shifting process is free of power interruption, and the comfort is high.
Taking the D1 shift D2 as an example, the vehicle starts to run at the D1 low gear, when the vehicle speed reaches the upshift line, B1 is gradually opened, and B2 is gradually combined at the same time, until B1 is completely released and B2 is completely combined, power can be continuously output to the wheels all the time, and therefore the whole gear shifting process has no power interruption.
If the speed ratio generated by the first and second planetary rows cannot meet the requirement of the whole vehicle, a third planetary row with the speed ratio of i can be added3Then, then
The D1 and R speed ratios are: i.e. i1×i3；
The D2 gear ratio is: i.e. i2×i3。
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A power assembly is characterized by comprising two output groups arranged in a mirror image mode, wherein each output group comprises a driving motor and a transmission, the driving motor comprises a first output shaft, and the first output shaft is in transmission connection with the transmission; the transmission includes a second output shaft;
the four shafts of the first output shaft and the second output shaft of the two output groups are positioned on the same axis.
2. The powertrain of claim 1, wherein the transmission includes a first planetary row, a second planetary row, a first clutch, and a second clutch;
the first planet row comprises a first sun gear, an outer planet gear and an outer planet row gear ring;
the second planet row comprises a second sun gear, a second planet carrier and an inner planet gear;
the first output shaft is in transmission connection with a second planet row sun gear; the inner planetary gear is connected to the second planetary carrier; the first clutch is in transmission connection with the second planet carrier; the outer planetary gear is in transmission connection with the second clutch through the first sun gear; the inner planetary gear and the outer planetary gear are arranged between the second sun gear and the outer planet row gear ring;
and the outer planet row gear ring is in transmission connection with a second output shaft.
3. The powertrain system of claim 2, wherein the first and second planetary rows are combined as a ravigneaux compound planetary row.
4. The powertrain according to any of claims 2 or 3, wherein the transmission further comprises a third planetary row comprising a third sun gear, a third ring gear, a third planet carrier, and third planet gears;
the outer planet row gear ring is in transmission connection with a third sun gear; the third planetary gear is positioned between the third sun gear and the third gear ring, and is in transmission connection with the second output shaft through the third planet carrier.
5. A powertrain according to any of claims 2 or 3, characterised in that the first clutch is one of a multiplate clutch, a band brake or a dog clutch;
the second clutch is one of a multi-plate clutch, a band brake or a dog clutch.
6. The powertrain according to any one of claims 1 to 3, wherein the driving motor comprises a stator and a rotor, and the first output shaft is in transmission connection with the rotor;
the rotor, the first output shaft and the second output shaft are located on the same axis.
7. A locomotion assembly according to any one of claims 1-3, further comprising a housing, both sets of said outputs being integrated in the housing.
8. A drive hub comprising a hub body, wherein an output set as claimed in any one of claims 1 to 6 is provided in the hub body.
9. A vehicle comprising a plurality of drive units according to any one of claims 1 to 7 and/or a drive hub according to claim 8.
10. The vehicle of claim 9, including four wheels, and wherein there are two sets of said powertrain; and four second output shafts of the two groups of power assemblies are respectively in transmission connection with four wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323924.5U CN214215454U (en) | 2020-12-31 | 2020-12-31 | Power assembly, driving hub and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323924.5U CN214215454U (en) | 2020-12-31 | 2020-12-31 | Power assembly, driving hub and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214215454U true CN214215454U (en) | 2021-09-17 |
Family
ID=77708162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023323924.5U Active CN214215454U (en) | 2020-12-31 | 2020-12-31 | Power assembly, driving hub and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214215454U (en) |
-
2020
- 2020-12-31 CN CN202023323924.5U patent/CN214215454U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4624154A (en) | Drive unit for motor vehicle | |
| US6565470B2 (en) | Automatic transmission apparatus | |
| CN109630626B (en) | Eight-front eight-reverse planetary speed change mechanism | |
| CN103527732A (en) | Seven-gear planet automatic gearbox | |
| US20160040755A1 (en) | Multi-Speed Gearbox | |
| CN218777398U (en) | Three-gear electric drive bridge structure | |
| WO2021073184A1 (en) | Two-gear variable-speed bridge driving system without driving force interruption | |
| US8936527B2 (en) | Transmission with radially stacked gear sets including annular gear | |
| US20050028627A1 (en) | Gear reduction unit | |
| CN204592176U (en) | A kind of electric vehicle centrifugal formula third gear automatic speed-changing system | |
| CN213575370U (en) | Integrated two-gear transfer case assembly with separately arranged front and rear axle outputs | |
| CN214215454U (en) | Power assembly, driving hub and vehicle | |
| CN112693305A (en) | Axle and vehicle | |
| CN216923142U (en) | Transmission and electric drive system and vehicle | |
| CN108223718B (en) | Four-planet-row automatic transmission and vehicle | |
| WO2023159917A1 (en) | Planetary-gear-set-type transmission and vehicle | |
| CN203713556U (en) | Motor for pure electric vehicle and transmission-integrated power assembly | |
| CN111306262B (en) | Four-gear speed change mechanism | |
| CN110725910A (en) | New energy commercial vehicle EAT derailleur gear drive structure | |
| CN108240432A (en) | Double rank planetary gears | |
| CN113074222A (en) | Four-freedom-degree multi-gear compound planetary speed change mechanism | |
| CN113153988B (en) | Three-degree-of-freedom nine-gear compound planetary transmission mechanism | |
| CN210478394U (en) | Two keep off coaxial electric bridge | |
| WO2019228265A1 (en) | Changeable linear speed reduction clutch | |
| CN110805666A (en) | Seven-gear planetary gear transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |