CN210733716U - Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge - Google Patents
Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge Download PDFInfo
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- CN210733716U CN210733716U CN201921544514.8U CN201921544514U CN210733716U CN 210733716 U CN210733716 U CN 210733716U CN 201921544514 U CN201921544514 U CN 201921544514U CN 210733716 U CN210733716 U CN 210733716U
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Abstract
The utility model relates to a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge. Belongs to the technical field of new energy vehicles. The single motor mainly solves the problems of high energy loss, low transmission efficiency and weaker dynamic property of the existing single motor. It is mainly characterized in that: the device comprises a first motor, a second motor, a first half shaft, a second half shaft, a first speed reducer assembly and a second speed reducer assembly; the first and second motors are respectively arranged on the first and second speed reducer assemblies; the first and second speed reducer assemblies respectively comprise an input gear, a first and second speed reduction gears, an output gear and an intermediate shaft; the first-stage reduction gear and the first second-stage reduction gear are arranged on the intermediate shaft; the first half shaft, the second half shaft, the first motor shaft and the second motor shaft are parallel to each other. The utility model has the characteristics of two motor drives, control transmission system mutual independence, cancel mechanical differential and save the chassis space, the parallel shaft electricity that mainly used single-speed second grade slowed down drives the bridge.
Description
Technical Field
The utility model belongs to the technical field of new energy automobile. In particular to a double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge.
Background
With the increasing importance of automobile exhaust pollution and energy consumption in all parts of the world, new energy automobiles become the vehicle models which are researched and developed by automobile manufacturers in all countries. The whole vehicle power system is also changed from the original engine + gearbox + traditional axle into the currently adopted motor + transmission axle to provide power. At present, the mature and more applied electric drive technology in domestic and foreign markets is based on a transmission system consisting of a single motor and a differential speed reducer, the single motor centralized drive mode mainly depends on rigid power transmission of gears and couplings, the loss of the single motor centralized drive mode is almost the same as that of a common fuel automobile in the power transmission process, the energy loss is high, the transmission efficiency is low, and the dynamic property is weaker.
Disclosure of Invention
In order to overcome the prior art not enough, the utility model provides a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge.
In order to achieve the above object, the utility model adopts the following technical solutions: the utility model provides a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge, includes first motor, first semi-axis, second semi-axis and first reduction gear assembly, its characterized in that: the first motor is arranged on a first speed reducer assembly, the first speed reducer assembly comprises a first input gear and a first primary speed reducing gear which are meshed, a first secondary speed reducing gear and a first output gear which are meshed, and a first intermediate shaft, and the first primary speed reducing gear and the first secondary speed reducing gear are arranged on the first intermediate shaft; the motor is characterized by further comprising a second motor and a second speed reducer assembly, wherein the second motor is mounted on the second speed reducer assembly, the second speed reducer assembly comprises a second input gear and a second first-stage speed reducing gear which are meshed with each other, a second-stage speed reducing gear and a second output gear which are meshed with each other, and a second intermediate shaft, and the second first-stage speed reducing gear and the second-stage speed reducing gear are arranged on the second intermediate shaft; the two ends of the first half shaft are respectively connected with the first wheel and the first speed reducer assembly, and the two ends of the second half shaft are respectively connected with the second wheel and the second speed reducer assembly; the first half shaft, the second half shaft, the first motor shaft and the second motor shaft are parallel to each other.
The first motor and the second motor are coaxial and arranged at intervals in the technical proposal of the utility model; the first motor shaft is connected with the first input gear through a spline, and the second motor shaft is connected with the second input gear through a spline.
The utility model discloses among the technical solution first motor and first reduction gear assembly and second motor and the total composition bilateral symmetry of second reduction gear arrange.
The utility model discloses among the technical solution first motor be the driving motor of the same model or different models with the second motor.
In the technical solution of the utility model, the first half shaft is fixedly connected with the first output gear; the second half shaft is fixedly connected with the second output gear.
The first motor and the second motor in the technical solution of the utility model are driving motors with the same model; the first motor and the second motor are coaxial and arranged at intervals; the first motor and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor and the second reducer; the first motor shaft is connected with the first input gear through a spline, and the second motor shaft is connected with the second input gear through a spline; the first half shaft is fixedly connected with the first output gear, and the second half shaft is fixedly connected with the second output gear.
The utility model discloses bi-motor and reduction gear divide bilateral symmetry to arrange, and left and right sides transmission system is the same, and the output fixed mounting of motor shaft has input gear, and input gear meshes connects one-level reduction gear, and one-level reduction gear fixed mounting has second grade reduction input gear in the one end of jackshaft, the other end fixed mounting of jackshaft, and second grade reduction input gear meshes and connects second grade reduction output gear, second grade reduction output gear passes through half hub connection wheel.
The utility model discloses control transmission system mutual independence, middle mechanical connection part has only been cancelled mechanical differential mechanism isotructure as supporting role, has saved the chassis space, has reduced whole bridge weight, has improved continuation of the journey mileage. The single-speed two-stage speed reduction is adopted, the structure is simple, the torque is large, and the loss in the energy transfer process is small.
The utility model discloses owing to cancelled differential mechanism, control such as turn antiskid adopts the electron differential, and two wheel torques can independently distribute at any time according to the running state, and control is more accurate, and control efficiency is higher.
The utility model adopts distributed arrangement, compared with the traditional centralized driving mode, the distributed driving mode adopts electronic differential control, thus reducing the mechanical loss caused by the differential mechanism and improving the transmission efficiency; the torque of each motor is independently controllable, the response is fast, and the stability of the vehicle can be improved by coordinately controlling each motor; under the requirement of the same power, the power can be distributed to each motor, so that the size of the motor is reduced, and the axle is more flexibly arranged; the single-speed two-stage speed reduction integrated transmission system is simple in structure and light in weight, and the endurance mileage can be improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The names corresponding to the sequence numbers in the figure are as follows: 1-a first electric machine, 2-a first electric machine shaft, 3-a first input gear, 4-a first primary reduction gear, 5-a first intermediate shaft, 6-a first secondary reduction gear, 7-a first output gear, 8-a first half shaft, 9-a first wheel, 10-a second electric machine, 11-a second electric machine shaft, 12-a second input gear, 13-a second primary reduction gear, 14-a second intermediate shaft, 15-a second secondary reduction gear, 16-a second output gear, 17-a second half shaft, 18-a second wheel.
Detailed Description
As shown in figure 1, the utility model relates to a two motor single-speed second grade speed reduction parallel axis electricity drive bridge, including first motor 1, second motor 10, first semi-axis 8, second semi-axis 17, first reduction gear assembly and second reduction gear assembly. Wherein the first electric machine 1 is mounted on a first reducer assembly and the second electric machine 10 is mounted on a second reducer assembly. The first motor 1 and the first reducer assembly are symmetrically arranged on two sides of the second motor 10 and the first reducer assembly. The first motor 1 and the second motor 10 are driving motors of the same type, and the first motor 1 and the second motor 10 are arranged coaxially and at intervals. The first half shaft 5, the second half shaft 14, the first motor shaft 2 and the second motor shaft 11 are parallel to each other. The two ends of the first half shaft 8 are respectively connected with the first wheel 9 and the first speed reducer assembly, and the two ends of the second half shaft 17 are respectively connected with the second wheel 18 and the second speed reducer assembly.
The first speed reducer assembly comprises a first input gear 3 and a first primary speed reduction gear 4 which are meshed, a first secondary speed reduction gear 6 and a first output gear 7 which are meshed, and a first intermediate shaft 5, wherein the first primary speed reduction gear 4 and the first secondary speed reduction gear 6 are arranged on the first intermediate shaft 5. The second reducer assembly comprises a second input gear 12 and a second first-stage reduction gear (13) which are meshed, a second-stage reduction gear 15 and a second output gear 16 which are meshed, and a second intermediate shaft 14, wherein the second first-stage reduction gear 13 and the second-stage reduction gear 15 are arranged on the second intermediate shaft 14. The first motor shaft 2 is connected with the first input gear 3 through a spline, and the second motor shaft 11 is connected with the second input gear 12 through a spline. The first half shaft 8 is fixedly connected with the first output gear 7, and the second half shaft 17 is fixedly connected with the second output gear 16.
The first motor 1 is connected with a first motor shaft 2, a first input gear 3 is fixedly mounted at the output end of the first motor shaft 2, the first input gear 3 is meshed with a first primary reduction gear 4, the first primary reduction gear 4 is fixedly mounted at one end of a first intermediate shaft 5, a first secondary reduction gear 6 is mounted at the other end of the first intermediate shaft 5, the first secondary reduction gear 6 is meshed with a first output gear 7, the first output gear 7 is fixedly mounted on a first half shaft 8, and the first half shaft 8 is connected with a first wheel 9; the second motor 10 is connected with a second motor shaft 11, a second input gear 12 is fixedly mounted at the output end of the second motor shaft 11, the second input gear 12 is meshed with a second first-stage reduction gear 13, the second first-stage reduction gear 13 is fixedly mounted at one end of a second intermediate shaft 14, a second-stage reduction gear 15 is mounted at the other end of the second intermediate shaft 14, the second-stage reduction gear 15 is meshed with a second output gear 16, the second output gear 16 is fixedly mounted on a second half shaft 17, and the second half shaft 17 is connected with a second wheel 18. The functions of steering, skid resistance and the like are completed through the independent torque distribution of the double motors.
The utility model has the characteristics of as follows: 1. the double-motor drive is adopted, the left transmission system and the right transmission system are mutually independent and symmetrically arranged, the middle mechanical connection part only serves as a supporting function, structures such as a mechanical differential mechanism and the like are omitted, the loss in the energy transfer process is small, the chassis space is saved, the whole bridge weight is reduced, and the endurance mileage is improved; 2. the two-stage speed reduction is integrated, the torque is increased, and the dynamic property of a drive axle is improved; 3. the torque of each motor is independently controllable, the response is fast, the stability of the vehicle can be improved by coordinately controlling each motor, and the control is more accurate.
Claims (6)
1. The utility model provides a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge, includes first motor (1), first semi-axis (8), second semi-axis (17) and first reduction gear assembly, its characterized in that: the first motor (1) is arranged on a first speed reducer assembly, the first speed reducer assembly comprises a first input gear (3) and a first primary speed reducing gear (4) which are meshed, a first secondary speed reducing gear (6) and a first output gear (7) which are meshed, and a first intermediate shaft (5), and the first primary speed reducing gear (4) and the first secondary speed reducing gear (6) are arranged on the first intermediate shaft (5); the motor is characterized by further comprising a second motor (10) and a second speed reducer assembly, wherein the second motor (10) is installed on the second speed reducer assembly, the second speed reducer assembly comprises a second input gear (12) and a second first-stage speed reducing gear (13) which are meshed with each other, a second-stage speed reducing gear (15) and a second output gear (16) which are meshed with each other, and a second intermediate shaft (14), and the second first-stage speed reducing gear (13) and the second-stage speed reducing gear (15) are arranged on the second intermediate shaft (14); two ends of the first half shaft (8) are respectively connected with a first wheel (9) and a first speed reducer assembly, and two ends of the second half shaft (17) are respectively connected with a second wheel (18) and a second speed reducer assembly; the first half shaft (8), the second half shaft (17), the first motor shaft (2) and the second motor shaft (11) are parallel to each other.
2. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1, characterized in that: the first motor (1) and the second motor (10) are coaxially arranged at intervals; the first motor shaft (2) is connected with the first input gear (3) through a spline, and the second motor shaft (11) is connected with the second input gear (12) through a spline.
3. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor (10) and the second reducer.
4. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (10) are driving motors with the same type or different types.
5. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first half shaft (8) is fixedly connected with the first output gear (7); the second half shaft (17) is fixedly connected with the second output gear (16).
6. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (10) are driving motors with the same model; the first motor (1) and the second motor (10) are coaxially arranged at intervals; the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor (10) and the second reducer; the first motor shaft (2) is connected with the first input gear (3) through a spline, and the second motor shaft (11) is connected with the second input gear (12) through a spline; the first half shaft (8) is fixedly connected with the first output gear (7), and the second half shaft (17) is fixedly connected with the second output gear (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544514.8U CN210733716U (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544514.8U CN210733716U (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
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| Publication Number | Publication Date |
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| CN210733716U true CN210733716U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921544514.8U Active CN210733716U (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117656802A (en) * | 2020-11-30 | 2024-03-08 | 比亚迪股份有限公司 | Wheel drive assembly and vehicle |
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2019
- 2019-09-17 CN CN201921544514.8U patent/CN210733716U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117656802A (en) * | 2020-11-30 | 2024-03-08 | 比亚迪股份有限公司 | Wheel drive assembly and vehicle |
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