CN210733717U

CN210733717U - Electric drive axle with double motors and single-speed parallel shaft for reducing speed on pulley side

Info

Publication number: CN210733717U
Application number: CN201921544528.XU
Authority: CN
Inventors: 李杨; 杨启晨; 李瑞丰; 孔文; 郑梦瑶
Original assignee: Dongfeng Dana Axle Co Ltd
Current assignee: Dongfeng Dana Axle Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-12
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a name is electric drive axle of two motor single-speed parallel shaft band pulley limit speed reduction. Belongs to the technical field of automobile manufacturing. The electric drive axle mainly solves the problems that the existing electric drive axle occupies the structural arrangement space of the chassis and influences the arrangement quantity of batteries. It is mainly characterized in that: the device comprises a first motor, a second motor, a gear box, a transmission shaft assembly, a wheel-side reducer assembly, a first wheel and a second wheel; the first motor and the second motor are respectively arranged on two sides of the gear box; the gear box contains a reducer assembly, the reducer assembly comprises a primary meshed driving gear and a secondary meshed driven gear; the motor shafts of the first motor and the second motor are parallel to the transmission shaft of the transmission shaft assembly. The utility model has the characteristics of occupy that chassis structure arrangement space is less relatively, do not influence the battery and arrange quantity, the high-efficient workspace of motor wide, energy utilization is high, the vehicle is extended to go to the mileage long and can compromise whole car dynamic property and economic nature, the electric drive axle of mainly used single-speed parallel shaft pulley limit speed reduction.

Description

Electric drive axle with double motors and single-speed parallel shaft for reducing speed on pulley side

Technical Field

The utility model belongs to the technical field of the automobile manufacturing. In particular to an electric drive axle with double motors and single-speed parallel shafts for reducing speed on a pulley side.

Background

The rapid development of the automobile industry and the increasing demand of people for automobiles drive the continuous increase of the automobile output and the automobile holding capacity, thereby aggravating the energy problems and the environmental problems which are generally concerned by people at present. The pure electric vehicle has the characteristics of low noise, no pollution, diversified energy sources and high energy efficiency, and is an important way for solving the vehicle problem in urbanization.

At present, in an electric drive axle with single-speed parallel shafts and wheel-side speed reduction, an automobile manufacturer uses a drive motor, in order to meet the requirement of dynamic property, the size and the mass of the motor are large, the large chassis structure arrangement space is occupied, and the arrangement quantity of batteries is influenced; the maximum rotating speed of the motor is generally low, the efficient working area of the motor is narrow, the energy utilization rate is low, the driving range of the vehicle is short, and the dynamic property and the economical efficiency of the whole vehicle are hardly considered.

Disclosure of Invention

In order to overcome the prior art not enough, the utility model provides a two motor single-speed parallel shaft pulley limit electric drive axle that slows down.

In order to achieve the above object, the utility model adopts the following technical solutions: the utility model provides a two motor single-speed parallel shaft band pulley limit electric drive axle that slows down, includes first motor, gear box, transmission shaft assembly, hub reduction gear assembly, first wheel and second wheel, and the gear box contains the reduction gear assembly, and one side at the gear box, its characterized in that are installed to first motor: the reducer assembly comprises a primary driving gear and a primary driven gear which are meshed with each other, and a secondary driving gear and a secondary driven gear which are meshed with each other; the gear box is characterized by also comprising a second motor, wherein the second motor is arranged on the other side of the gear box; the motor shafts of the first motor and the second motor are parallel to the transmission shaft of the transmission shaft assembly.

The utility model discloses among the technical solution the output of first motor and second motor respectively with the spline meshing of one-level driving gear.

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.

The technical solution of the utility model also comprises a differential mechanism; the transmission shaft assembly comprises a half shaft, and two ends of the differential are connected with the half shaft.

The wheel reduction assembly in the technical solution of the utility model comprises a sun wheel, a planet carrier and a gear ring, which are respectively arranged in a first wheel and a second wheel; the transmission shaft assembly is connected with the sun gear through a spline.

The first motor and the second motor in the technical solution of the utility model are driving motors with the same model; the device also comprises a differential mechanism; the transmission shaft assembly comprises a half shaft, and two ends of the differential are connected with the half shaft; the wheel-side reducer assembly comprises a sun wheel, a planet carrier and a gear ring, and is respectively arranged in a first wheel and a second wheel; the transmission shaft assembly is connected with the sun gear through a spline.

The utility model discloses based on current electric drive axle, adopt dual drive motor parallel arrangement to provide power, motor output torque passes through reduction gear, semi-axis and transmits the wheel, and volume and quality that this kind of structure was arranged and can be reduced single motor, and the space utilization is more reasonable, reduces the shared space of axle, increases the battery capacity in carriage, and the highest rotational speed of small motor is higher, and high-efficient interval is wide, has promoted whole car efficiency, has increased the vehicle and has continued to go the mileage. The electric drive axle is also provided with a wheel-side speed reducer, so that the trafficability and the dynamic property of the whole vehicle are enhanced.

The utility model has the characteristics of occupy that chassis structure arrangement space is less relatively, do not influence the battery and arrange quantity, the high-efficient workspace of motor is wide, energy utilization is high, the vehicle is extended to the mileage and can compromise whole car dynamic nature and economic nature. The utility model discloses the electric drive axle of the speed reduction of single-speed parallel shaft band pulley limit of mainly used.

Drawings

Fig. 1 is a schematic structural diagram of the electric drive axle assembly of the present invention.

The names corresponding to the sequence numbers in the figure are as follows: the device comprises a first motor 1, a second motor 2, a primary driving gear 3, a primary driven gear 4, a secondary driving gear 5, a secondary driven gear 6, a half shaft 7, a sun gear 8, a planet gear 9, a planet carrier 10, a gear ring 11, a first wheel 12 and a second wheel 13.

Detailed Description

As shown in fig. 1, the utility model relates to an electric drive axle of speed reduction of double-motor single-speed parallel shaft pulley limit, including first motor 1, second motor 2, gear box, transmission shaft assembly, differential mechanism (not shown in the figure), wheel reduction assembly, first wheel 12 and second wheel 13. Wherein, first motor 1 installs in one side of gear box, and the opposite side at the gear box is installed to second motor 2 symmetry, and the output of first motor 1 and second motor 2 meshes with the spline of one-level driving gear 3 respectively. The first motor 1 and the second motor 2 are driving motors with the same model, and the sum of the power of the first motor 1 and the power of the second motor 2 is equal to the power of the existing single motor, so that the size and the mass of the first motor 1 and the second motor 2 can be relatively small, the chassis structure space is convenient to arrange in a balanced manner, and the arrangement quantity of batteries is not influenced. The first motor 1 and the second motor 2 may be different types of driving motors. The gearbox contains a speed reducer assembly comprising a meshed primary drive gear 3 and primary driven gear 4, and a meshed secondary drive gear 5 and secondary driven gear 6. The transmission shaft assembly comprises a half shaft 7, and two ends of the differential are connected with one end of the half shaft 7. The motor shafts of the first motor 1 and the second motor 2 are parallel to the half shaft 7. The hub reduction gear assembly comprises a sun gear 8, a planet gear 9, a planet carrier 10 and a gear ring 11 which are respectively arranged in a first wheel 12 and a second wheel 13, and one end of a half shaft 7 is connected with the sun gear 8 through a spline.

First motor 1, second motor 2 arranges respectively in the both sides of one-level driving gear 3, first motor 1, second motor 2 output torque transmits one-level driving gear 3 through spline connection, one-level driving gear 3 transmits power one-level driven gear 4 through gear engagement, one-level driven gear 4 transmits power for second level driving gear 5 through spline connection, second level driving gear 5 connects and transmits power for second level driven gear 6 through gear engagement, second level driven gear 6 transmits power for semi-axis 7 through differential mechanism, semi-axis 7 transmits power for sun gear 8 through spline connection, sun gear 8 transmits power for planet wheel 9 through gear engagement, ring gear 11 is fixed motionless, planet wheel 9 transmits power for planet carrier 10, planet carrier 10 passes through wheel hub with power input to first wheel 12, second wheel 13.

The utility model has the advantages as follows: the design of double motors is adopted, so that the high-efficiency area of the motor is wider, and the use is more excellent; 2. each motor has small volume and more reasonable arrangement, and the space of the chassis is saved; 3. the double motors are symmetrically arranged on two sides of the gear box, so that the problem of motor offset is solved, and the driving comfort of the vehicle is improved; 4. the wheel hub reducer is arranged, so that the trafficability and the dynamic property of the whole vehicle are improved.

Claims

1. The utility model provides a two quick parallel shaft belt wheel limit of motor drive axle that slows down, includes first motor (1), gear box, transmission shaft assembly, hub reduction gear assembly, first wheel (12) and second wheel (13), and the gear box contains the reduction gear assembly, and one side at the gear box is installed in first motor (1), its characterized in that: the reducer assembly comprises a primary driving gear (3) and a primary driven gear (4) which are meshed with each other, and a secondary driving gear (5) and a secondary driven gear (6) which are meshed with each other; the gearbox also comprises a second motor (2), wherein the second motor (2) is arranged on the other side of the gearbox; the motor shafts of the first motor (1) and the second motor (2) are parallel to the transmission shaft of the transmission shaft assembly.

2. The dual-motor single-speed parallel-shaft pulley-side decelerated electric drive axle according to claim 1, characterized in that: the output ends of the first motor (1) and the second motor (2) are respectively meshed with the spline of the first-stage driving gear (3).

3. The dual-motor single-speed parallel-shaft pulley-side decelerated electric drive axle according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (2) are driving motors with the same type or different types.

4. The dual-motor single-speed parallel-shaft pulley-side decelerated electric drive axle according to claim 1 or 2, characterized in that: the device also comprises a differential mechanism; the transmission shaft assembly comprises a half shaft (7), and two ends of the differential are connected with the half shaft (7).

5. The dual-motor single-speed parallel-shaft pulley-side decelerated electric drive axle according to claim 1 or 2, characterized in that: the hub reduction gear assembly comprises a sun gear (8), a planet gear (9), a planet carrier (10) and a gear ring (11), which are respectively arranged in a first wheel (12) and a second wheel (13); the transmission shaft assembly is connected with the sun wheel (8) through a spline.

6. The dual-motor single-speed parallel-shaft pulley-side decelerated electric drive axle according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (2) are driving motors with the same model; the device also comprises a differential mechanism; the transmission shaft assembly comprises a half shaft (7), and two ends of the differential are connected with the half shaft (7); the hub reduction gear assembly comprises a sun gear (8), a planet gear (9), a planet carrier (10) and a gear ring (11), which are respectively arranged in a first wheel (12) and a second wheel (13); the transmission shaft assembly is connected with the sun wheel (8) through a spline.