CN215883291U - Non-bearing type double-motor electric axle - Google Patents
Non-bearing type double-motor electric axle Download PDFInfo
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- CN215883291U CN215883291U CN202120582077.XU CN202120582077U CN215883291U CN 215883291 U CN215883291 U CN 215883291U CN 202120582077 U CN202120582077 U CN 202120582077U CN 215883291 U CN215883291 U CN 215883291U
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Abstract
The utility model relates to a non-bearing type double-motor electric axle. The utility model aims to solve the technical problems of large unsprung mass and low driving efficiency of the conventional electric axle. The first motor and the second motor of the axle are both positioned above the frame and are respectively placed on two sides of the central axis of the frame; the primary planetary gear reducer of the transmission comprises a sun gear, a planet carrier and a gear ring; the gear ring is fixed on the transmission shell; the sun gear is connected with the first motor through a first clutch; the two-stage double-intermediate-shaft speed reducer comprises a driving gear, an intermediate shaft gear and a driven gear; the driving gear is connected with the planet carrier through a spline; the intermediate shaft gear comprises two gears which are coaxially and fixedly connected, and the two gears are respectively meshed with the driving gear and the driven gear; the output gear is connected with the driven gear or the planet carrier through the gear shifting mechanism, and the output gear is connected with the second motor through the second clutch.
Description
Technical Field
The utility model relates to an electric axle, in particular to a non-bearing type double-motor electric axle.
Background
In recent years, electric vehicles have become one of the mainstream directions of vehicle development due to the increasing energy problems and environmental problems. Electric drive axle assembly (being electronic axle) adopts central motor associated mode transaxle structure mostly among the current electric motor car, and the advantage of this kind of connected mode is simple structure and with low costs, but its shortcoming that exists is: 1) the single motor has single driving power, limited driving force and low driving efficiency; 2) the volume is large, and the unsprung mass of the whole vehicle is increased.
Disclosure of Invention
The utility model aims to solve the technical problems of low driving efficiency and large unsprung mass of the conventional electric axle and provides a non-bearing type double-motor electric axle.
In order to solve the technical problems, the technical solution provided by the utility model is as follows:
a non-bearing type double-motor electric axle is characterized in that: comprises that
The bicycle comprises a frame, a first motor, a second motor, a first clutch, a second clutch, an axle transmission assembly, two hub shafts and two wheels;
the first motor and the second motor are both positioned above the frame and are respectively placed on two sides of the central axis of the frame;
the transmission comprises a transmission shell, a primary planetary gear reducer, a secondary double-intermediate-shaft reducer, a gear shifting mechanism and an output gear, wherein the primary planetary gear reducer, the secondary double-intermediate-shaft reducer, the gear shifting mechanism and the output gear are arranged in the transmission shell;
the primary planetary gear reducer comprises a sun gear, a planet carrier and a gear ring;
the gear ring is fixed on the transmission shell;
the sun gear is connected with the first motor through a first clutch;
the two-stage double-intermediate-shaft speed reducer comprises a driving gear, an intermediate shaft gear and a driven gear;
the driving gear is connected with the planet carrier through a spline;
the intermediate shaft gear comprises two gears which are coaxially and fixedly connected, and the two gears are respectively meshed with the driving gear and the driven gear;
the output gear is connected with the driven gear or the planet carrier through the gear shifting mechanism, and the output gear is connected with the second motor through the second clutch.
Further, the axle transmission assembly comprises an intermediate wheel and a differential;
the intermediate wheel is respectively meshed with the output gear and the differential mechanism,
two output ends of the differential are respectively connected with one ends of the two hub shafts;
the two wheels are respectively arranged at the other ends of the two hub shafts;
the hub shaft is fixedly connected with the frame.
Furthermore, two output ends of the differential mechanism are respectively provided with a first universal joint, a swing half shaft and a second universal joint which are connected in sequence, and the two second universal joints are respectively connected with one ends of the two hub shafts.
Further, a damping leaf spring is mounted between the frame and the hub of the wheel.
Furthermore, the driven gear is sleeved on the planet carrier in an empty mode to form a double-intermediate-shaft structure.
Further, the gear shifting mechanism is of a sliding sleeve structure or a synchronizer structure.
Furthermore, the first motor, the second motor, the transmission housing and the differential are fixedly connected with the frame.
Compared with the prior art, the utility model has the following beneficial effects:
1. the non-bearing type double-motor electric axle provided by the utility model has the advantages that the double-motor driving axle is provided with two driving motors, and compared with a transmission single-motor system, the driving force is large, the driving efficiency is high, and the advantages of dynamic property and economy are realized.
2. According to the non-bearing type double-motor electric axle provided by the utility model, the differential mechanism is connected with the wheels through the swing half shaft and the universal joint, so that the motor, the transmission, the differential mechanism and the hub shaft can be fixed on a frame, the unsprung mass of the whole vehicle is reduced, and the operating stability of the whole vehicle is improved.
3. According to the non-bearing type double-motor electric axle provided by the utility model, when the double-motor driven axle shifts gears, power can be continuously transmitted through the second motor, the interruption of power is reduced, and the dynamic property and the comfort are improved.
Drawings
FIG. 1 is a schematic structural view of a non-load-bearing dual-motor electric axle according to the present invention;
description of reference numerals:
1-a first electric machine, 2-a second electric machine, 3-a first clutch, 4-a second clutch, 5-a sun gear, 6-a planet carrier, 7-a planet gear, 8-a ring gear, 9-a driving gear, 10-a countershaft gear, 11-a driven gear, 12-an output gear, 13-a idle gear, 14-a differential, 15-an output half shaft, 16-a first universal joint, 17-a swing half shaft, 18-a second universal joint, 19-a hub shaft, 20-a frame, 21-a gear shift mechanism and 22-a wheel.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
The utility model provides a non-bearing type double-motor electric axle, which can reduce unsprung mass of a whole vehicle, and can improve working efficiency of a motor and dynamic property and economical efficiency of the whole vehicle through cooperative driving of double motors. The structure of the bicycle comprises a frame 20, a first motor 1, a second motor 2, a first clutch 3, a second clutch 4, an axle transmission assembly, two hub shafts 19 and two wheels 22; the first motor 1 and the second motor 2 are both positioned above the frame 20 and are respectively placed on two sides of the central axis of the frame 20; the transmission comprises a transmission shell, a primary planetary gear reducer, a secondary double-intermediate-shaft reducer, a gear shifting mechanism 21 and an output gear 12, wherein the primary planetary gear reducer, the secondary double-intermediate-shaft reducer, the gear shifting mechanism and the output gear are arranged in the transmission shell; the primary planetary gear reducer comprises a sun gear 5, a planet gear 7, a planet carrier 6 and a gear ring 8; the ring gear 8 is fixed to the transmission housing and remains stationary; the sun gear 5 is connected with the first motor 1 through the first clutch 3; the two-stage double-intermediate-shaft speed reducer comprises a driving gear 9, an intermediate shaft gear 10 and a driven gear 11; the driving gear 9 is connected with the planet carrier 6 through a spline; the intermediate shaft gear 10 comprises two gears which are coaxially and fixedly connected, and the two gears are respectively meshed with the driving gear 9 and the driven gear 11; the output gear 12 is connected to the driven gear 11 or the planet carrier 6 via a shift mechanism 21, and the output gear 12 is further connected to the second electric machine 2 via the second clutch 4.
With the above configuration, when the output gear 12 is connected to the driven gear 11 via the shift mechanism 21, a low gear is engaged, and when the output gear 12 is connected to the carrier 6 via the shift mechanism 21, a high gear is engaged.
The axle transmission assembly comprises an intermediate wheel 13 and a differential 14; the intermediate wheel 13 is respectively meshed with the output gear 12 and the differential 14, so that the differential 14 is driven, and the output gear 12 transmits power to the differential 14 through the intermediate wheel 13; two output ends of the differential 14 are respectively connected with one ends of two hub shafts 19; the two wheels 22 are respectively arranged at the other ends of the two hub shafts 19; the hub axle 19 is fixedly coupled to the frame 20. Two output half shafts 15 of the differential 14 are respectively provided with a first universal joint 16, a swing half shaft 17 and a second universal joint 18 which are connected in sequence, and the two second universal joints 18 are respectively connected with one ends of two hub shafts 19 to realize power transmission. Adopt this structure, connect through swing semi-axis 17 and universal joint between differential mechanism 14 and the wheel 22, do not link firmly, make first motor 1, second motor 2, gearbox housing, differential mechanism 14 and wheel hub axle 19 all can link firmly with frame 20, install leaf spring for the shock attenuation between the wheel hub of frame 20 and wheel 22, compare with traditional electricity drive bridge, show to have reduced the unsprung mass of whole car, improved the stability of whole car manipulation.
The driven gear 11 is sleeved on the planet carrier 6 in an empty mode to form a double-intermediate-shaft structure, and the double-intermediate-shaft structure can enable the driven gear 11 to be suspended on the planet carrier 6 without bearing support.
The gear shifting mechanism 21 is of a sliding sleeve structure or a synchronizer structure, a low gear is left-engaged, and the driving gear 9 is connected with the driven gear 11 to transmit power; or a high gear is engaged rightwards, and the output gear 12 is connected with the planet carrier 6 to transmit power.
When the transmission shifts gears, the second clutch 4 is engaged, the second motor 2 works to drive the output gear 12, the gear shifting mechanism 21 shifts gears, and the second motor 2 provides driving force for the whole vehicle in the gear shifting process, so that the power interruption in the gear shifting process is reduced; when the first motor 1 is driven, the second motor 2 can be combined for auxiliary driving through the second clutch 4, or the second clutch 4 is disconnected, and the first motor 1 is driven independently; the whole vehicle can also be driven by the second electric machine 2 alone, at which time the first clutch 3 is disengaged, or the shift mechanism 21 is in a neutral state.
The non-bearing type double-motor electric axle can effectively reduce the unsprung mass of the whole vehicle and improve the operation stability; the double-motor two-gear speed change is adopted, so that the motor can work more efficiently, and the dynamic property and the economical efficiency of the whole vehicle are improved; in the gear shifting process, the gear shifting without power interruption can be realized, and the dynamic property and the comfort are improved.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (7)
1. The utility model provides a non-formula bi-motor electric axle that bears which characterized in that: comprises that
The bicycle comprises a frame (20), a first motor (1), a second motor (2), a first clutch (3), a second clutch (4), an axle transmission assembly, two hub shafts (19) and two wheels (22);
the first motor (1) and the second motor (2) are both positioned above the frame (20) and are respectively placed on two sides of the central axis of the frame (20);
the transmission comprises a transmission shell, a primary planetary gear reducer, a secondary double-intermediate-shaft reducer, a gear shifting mechanism (21) and an output gear (12), wherein the primary planetary gear reducer, the secondary double-intermediate-shaft reducer, the gear shifting mechanism and the output gear are arranged in the transmission shell;
the primary planetary gear reducer comprises a sun gear (5), a planet gear (7), a planet carrier (6) and a gear ring (8);
the ring gear (8) is fixed on the transmission housing;
the sun gear (5) is connected with the first motor (1) through the first clutch (3);
the two-stage double-intermediate-shaft speed reducer comprises a driving gear (9), an intermediate shaft gear (10) and a driven gear (11);
the driving gear (9) is connected with the planet carrier (6) through a spline;
the middle shaft gear (10) comprises two gears which are coaxially and fixedly connected, and the two gears are respectively meshed with the driving gear (9) and the driven gear (11);
the output gear (12) is connected with the driven gear (11) or the planet carrier (6) through a gear shifting mechanism (21), and the output gear (12) is connected with the second motor (2) through a second clutch (4).
2. The non-load bearing dual-motor electric axle of claim 1, wherein:
the axle transmission assembly comprises an intermediate wheel (13) and a differential (14);
the intermediate wheel (13) is respectively meshed with the output gear (12) and the differential (14),
two output ends of the differential (14) are respectively connected with one ends of two hub shafts (19);
the two wheels (22) are respectively arranged at the other ends of the two hub shafts (19);
the hub shaft (19) is fixedly connected with the frame (20).
3. The non-load bearing dual-motor electric axle of claim 2, wherein:
two output ends of the differential (14) are respectively provided with a first universal joint (16), a swing half shaft (17) and a second universal joint (18) which are sequentially connected, and the second universal joints (18) are respectively connected with one ends of two hub shafts (19).
4. The non-load bearing dual-motor electric axle of claim 1, 2 or 3, wherein:
and a damping steel plate spring is arranged between the frame (20) and the hub of the wheel (22).
5. The unsupported dual-motor electric axle of claim, wherein:
the driven gear (11) is sleeved on the planet carrier (6) in an empty mode to form a double-intermediate-shaft structure.
6. The non-load bearing dual-motor electric axle of claim 5, wherein:
the gear shifting mechanism (21) is of a sliding sleeve structure or a synchronizer structure.
7. The non-load bearing dual-motor electric axle of claim 6, wherein:
the first motor (1), the second motor (2), the transmission shell and the differential (14) are fixedly connected with the frame (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120582077.XU CN215883291U (en) | 2021-03-22 | 2021-03-22 | Non-bearing type double-motor electric axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120582077.XU CN215883291U (en) | 2021-03-22 | 2021-03-22 | Non-bearing type double-motor electric axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215883291U true CN215883291U (en) | 2022-02-22 |
Family
ID=80339594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120582077.XU Active CN215883291U (en) | 2021-03-22 | 2021-03-22 | Non-bearing type double-motor electric axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215883291U (en) |
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2021
- 2021-03-22 CN CN202120582077.XU patent/CN215883291U/en active Active
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