CN216733909U - Four-wheel steering driving system for motor-driven automobile - Google Patents
Four-wheel steering driving system for motor-driven automobile Download PDFInfo
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- CN216733909U CN216733909U CN202122253772.4U CN202122253772U CN216733909U CN 216733909 U CN216733909 U CN 216733909U CN 202122253772 U CN202122253772 U CN 202122253772U CN 216733909 U CN216733909 U CN 216733909U
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Abstract
The utility model provides a four-wheel steering driving system for a motor-driven automobile, and relates to the field of motor-driven automobiles. The four-wheel steering system can realize four-wheel drive of the electric vehicle and simultaneously realize the four-wheel steering function, improves the power performance and the trafficability of the vehicle, and is very suitable for the application of engineering vehicle types on non-paved road surfaces and off-road surfaces; the backward driving steering axle can realize the steering of the rear wheel, and can realize the follow-up steering and the reverse steering with the front wheel through the setting under different working conditions, wherein the former can improve the stability of the vehicle in high steering, and the latter can improve the trafficability of the vehicle in low-speed driving.
Description
Technical Field
The utility model relates to the field of motor-driven automobiles, in particular to a four-wheel steering driving system for a motor-driven automobile.
Background
With the progress of science and technology and the continuous development of society, more and more people are aware of the importance of environmental protection. Concepts and policies such as "carbon neutralization" and "carbon peaking" are also increasingly recognized and implemented. In 2020, the carbon emission of the transportation industry accounts for about 10%, the third industry is ranked in each industry, and the carbon emission reduction of the transportation industry is imperative in the process of realizing 'carbon neutralization'. The new energy automobile is greatly popularized, and the existing new energy automobile has two types of electric driving and hybrid driving and is characterized in that the driving kinetic energy is provided by the driving of a motor.
The four-wheel drive can provide sufficient and stable kinetic energy for the automobile, however, the existing motor-driven automobile usually realizes the four-wheel drive of the automobile through two sets of motors and an electric control system; this approach is costly and often only allows two-wheel steering, which is also deficient in vehicle trafficability. The two sets of motors and the electric control system have certain difficulty in linkage control, the power distribution of the front axle and the rear axle needs to be ensured by a software algorithm in the existing scheme, and the power distribution has an uneven phenomenon under certain specific conditions, so that abnormal abrasion of tires is caused.
Therefore, it is necessary to provide a new four-wheel steering driving system for a motor-driven vehicle to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve one of the above technical problems, the present invention provides a four-wheel steering driving system for a motor-driven vehicle, comprising: the driving motor, axis differential mechanism, forward differential mechanism, backward differential mechanism, forward drive axle, backward drive axle, forward drive steer axle and backward drive steer axle.
Further, the middle axle differential, the forward differential and the backward differential all adopt the same differential structure.
Further, the differential structure includes a differential body, a drive shaft, a first output shaft, and a second output shaft; the driving shaft is in differential rotation connection with the first output shaft and the second output shaft through the differential mechanism body.
Furthermore, a driving shaft of the middle shaft differential is driven by a driving motor, and the first output shaft and the second output shaft are fixedly connected with one end of the forward transmission shaft and one end of the backward transmission shaft respectively.
Further, the forward differential and the backward differential are respectively arranged in the middle of the forward drive steering axle and the backward drive steering axle.
Furthermore, the driving shafts of the forward differential and the backward differential are respectively and fixedly connected with the other ends of the forward transmission shaft and the backward transmission shaft; and a first output shaft and a second output shaft of the forward differential are respectively in rotating connection with the front left and right wheels.
Furthermore, a first output shaft and a second output shaft of the backward differential are respectively in rotating connection with the left and right wheels at the back.
As a more specific solution of the embodiment, the forward and backward left and right wheels are linked in direction by a steering arm; the steering arm comprises a left steering knuckle arm, a right steering knuckle arm and a steering tie rod; the left steering knuckle arm and the right steering knuckle arm are respectively fixed on the inner sides of the left wheel hub and the right wheel hub; and two ends of the tie rod are respectively and rotatably fixed on the left knuckle arm and the right knuckle arm.
As a more specific solution of this embodiment, a transmission for adjusting the rotation speed is further provided between the driving motor and the middle shaft differential.
As a more specific solution to this embodiment, the forward-drive steering axle can also be replaced by a steering axle.
As a more specific solution to this embodiment, the rear-drive steer axle can also be replaced with a drive axle.
Compared with the prior art, the four-wheel steering driving system for the motor-driven automobile has the following beneficial effects:
1. the four-wheel steering system can realize four-wheel drive of the electric vehicle and simultaneously realize the four-wheel steering function, improves the power performance and the trafficability of the vehicle, and is very suitable for the application of engineering vehicle types on non-paved road surfaces and off-road surfaces;
2. according to the utility model, pure mechanical power can be distributed to four wheels in a balanced manner through the driving motor, the gearbox and the differential, and the power distribution of the front axle and the rear axle is ensured through a software algorithm in the existing scheme, so that the phenomenon of non-uniformity in power distribution is easy to occur, and abnormal abrasion of tires is caused;
3. the backward driving steering axle can realize the steering of the rear wheels, and can realize the follow-up steering and the reverse steering with the front wheels through setting under different working conditions, wherein the former can improve the stability of the vehicle in high steering, and the latter can improve the trafficability of the vehicle in low-speed driving.
Drawings
Fig. 1 is a schematic system diagram of a four-wheel steering driving system for a motor-driven vehicle according to an embodiment of the present invention.
Wherein, the reference numbers: 1. a drive motor; 2. a gearbox; 3. a middle shaft differential; 4. a forward drive shaft; 5. a tie rod; 6. a forward drive steer axle; 7. a rear differential; 8. a left knuckle arm; 9. and the steering axle is driven backwards.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
As shown in fig. 1, the present embodiment provides a four-wheel steering driving system for a motor-driven vehicle, comprising: the driving mechanism comprises a driving motor 1, a middle shaft differential 3, a forward differential, a backward differential 7, a forward transmission shaft 4, a backward transmission shaft, a forward driving steering axle 6 and a backward driving steering axle 9.
Further, the middle axle differential 3, the forward differential and the backward differential 7 all adopt the same differential structure.
Further, the differential structure includes a differential body, a drive shaft, a first output shaft, and a second output shaft; the driving shaft is in differential rotation connection with the first output shaft and the second output shaft through the differential mechanism body.
Furthermore, a driving shaft of the middle shaft differential mechanism 3 is driven by the driving motor 1, and the first output shaft and the second output shaft are fixedly connected with one end of the forward transmission shaft 4 and one end of the backward transmission shaft respectively.
Further, the forward differential and the backward differential 7 are respectively arranged in the middle of the forward drive steering axle 6 and the backward drive steering axle 9.
Further, the driving shafts of the forward differential and the backward differential 7 are respectively and fixedly connected with the other ends of the forward transmission shaft 4 and the backward transmission shaft; and a first output shaft and a second output shaft of the forward differential are respectively and rotationally connected with the front left wheel and the front right wheel.
Further, a first output shaft and a second output shaft of the rear differential 7 are respectively in rotational connection with the left and right rear wheels.
Specifically, the method comprises the following steps: the four-wheel steering driving system for the motor-driven automobile can realize four-wheel steering function while realizing four-wheel drive of the electric automobile, improves the dynamic performance and trafficability of the automobile, and is very suitable for engineering vehicle type application on non-paved roads and off-road roads. The driving motor and the gearbox are fixed on the vehicle body, power is distributed to the front transmission shaft and the rear transmission shaft through the differential mechanism, the front transmission shaft and the rear transmission shaft transmit the power to the front driving steering axle and the rear driving steering axle, and the driving steering axles transmit the power to tires on two sides through the differential mechanism in the middle of the axles, so that four-wheel drive is realized.
As a more specific solution of the embodiment, the forward and backward left and right wheels are linked in direction by a steering arm; the steering arms comprise a left steering knuckle arm 8, a right steering knuckle arm and a steering tie rod 5; the left knuckle arm 8 and the right knuckle arm are respectively fixed on the inner sides of the left wheel hub and the right wheel hub; and two ends of the tie rod 5 are respectively fixed on the left knuckle arm 8 and the right knuckle arm in a shaft rotating manner.
Specifically, the method comprises the following steps: the existing pure electric four-wheel drive scheme has the problem of high cost, and the two-wheel steering is also insufficient in vehicle trafficability. The two sets of motors and the electric control system have certain difficulty in linkage control, and the problem of abnormal abrasion of tires is easy to occur. Two driving steering axles can be linked by connecting a steering arm with a steering machine, and can rotate in the same direction and in different directions according to different working conditions, so that the stability and the trafficability characteristic of the vehicle are improved.
As a more specific solution of the present embodiment, a transmission 2 for adjusting the rotation speed is further disposed between the driving motor 1 and the middle shaft differential 3.
In addition, the driving mode of the driving motor, the gearbox and the differential mechanism is adopted, and different steering logics can be set for the front and the rear driving steering axles according to the running working conditions of the vehicle.
As a more specific solution to this embodiment, the forward drive steer axle 6 can also be replaced by a steer axle.
As a more specific solution of the present embodiment, the rear-drive steer axle 9 can also be replaced with a drive axle.
Specifically, the method comprises the following steps: the modes of the motor, the gearbox and the differential mechanism provided by the embodiment can be replaced by the motor and the differential mechanism, and the two modes are the same in principle. In this scheme, the mode of changing the backward driving steering axle into the driving axle belongs to the protection scope of the utility model, and similarly, the mode of changing the forward driving steering axle into the steering axle also belongs to the protection scope of the utility model.
And finally: in the embodiment, power can be distributed to four wheels in a purely mechanical and balanced manner by a driving motor, a gearbox and a differential, and the power distribution of the front axle and the rear axle is ensured by a software algorithm in the existing scheme, so that the power distribution has an uneven phenomenon under certain specific conditions, and abnormal abrasion of tires is caused. In addition, the backward driving steering axle can realize the steering of the rear wheels, and the follow-up steering and the reverse steering with the front wheels can be realized through setting under different working conditions, wherein the former can improve the stability of the vehicle in high steering, and the latter can improve the trafficability of the vehicle in low-speed driving.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A four-wheel steering drive system for a motor-driven vehicle, comprising: the device comprises a driving motor (1), a middle shaft differential (3), a forward differential, a backward differential (7), a forward transmission shaft (4), a backward transmission shaft, a forward driving steering axle (6) and a backward driving steering axle (9);
the middle shaft differential (3), the forward differential and the backward differential (7) all adopt the same differential structure;
the differential structure comprises a differential body, a driving shaft, a first output shaft and a second output shaft; the driving shaft is in differential rotation connection with the first output shaft and the second output shaft through the differential mechanism body;
a driving shaft of the middle shaft differential (3) is driven by a driving motor (1), and a first output shaft and a second output shaft are fixedly connected with one end of a forward transmission shaft (4) and one end of a backward transmission shaft respectively;
the forward differential mechanism and the backward differential mechanism (7) are respectively arranged in the middle of a forward drive steering axle (6) and a backward drive steering axle (9);
the driving shafts of the forward differential mechanism and the backward differential mechanism (7) are respectively and fixedly connected with the other ends of the forward transmission shaft (4) and the backward transmission shaft; a first output shaft and a second output shaft of the forward differential are respectively in rotating connection with front left and right wheels;
and a first output shaft and a second output shaft of the backward differential (7) are respectively and rotationally connected with the left and right wheels at the back.
2. A four-wheel steering driving system for motor-driven vehicle according to claim 1, wherein the left and right wheels in forward and backward directions are linked by a steering arm; the steering arms comprise a left steering knuckle arm (8), a right steering knuckle arm and a steering tie rod (5); the left steering knuckle arm (8) and the right steering knuckle arm are respectively fixed on the inner sides of the left wheel hub and the right wheel hub; and two ends of the tie rod (5) are respectively fixed on the left knuckle arm (8) and the right knuckle arm in a shaft rotating manner.
3. A four-wheel steering drive system for motor-driven vehicles according to claim 1, wherein a gearbox (2) for regulating the rotational speed is provided between the drive motor (1) and the center shaft differential (3).
4. A four-wheel steering drive system for motor-driven vehicles according to claim 1, characterised in that the forward drive steering axle (6) can also be replaced by a steering axle.
5. A four-wheel steering drive system for motor-driven vehicles according to claim 1, characterised in that the rear-drive steering axle (9) can also be replaced by a drive axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122253772.4U CN216733909U (en) | 2021-09-17 | 2021-09-17 | Four-wheel steering driving system for motor-driven automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122253772.4U CN216733909U (en) | 2021-09-17 | 2021-09-17 | Four-wheel steering driving system for motor-driven automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216733909U true CN216733909U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122253772.4U Active CN216733909U (en) | 2021-09-17 | 2021-09-17 | Four-wheel steering driving system for motor-driven automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216733909U (en) |
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2021
- 2021-09-17 CN CN202122253772.4U patent/CN216733909U/en active Active
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