CN216034643U - Automobile - Google Patents
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- CN216034643U CN216034643U CN202121200989.2U CN202121200989U CN216034643U CN 216034643 U CN216034643 U CN 216034643U CN 202121200989 U CN202121200989 U CN 202121200989U CN 216034643 U CN216034643 U CN 216034643U
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Abstract
The utility model belongs to the technical field of whole vehicle structure arrangement, and relates to an automobile, which comprises a frame and a rear axle, wherein the rear axle comprises two double-wheel steering drive axles which are oppositely arranged on the left and the right; the double-wheel steering drive axle comprises an inner wheel, an outer wheel, a first drive motor, a first speed reduction mechanism, a second drive motor, a second speed reduction mechanism and suspension structures, wherein the suspension structures of the two double-wheel steering drive axles form a rear suspension, the inner wheel and the outer wheel form double wheels, the suspension structures are positioned right above the double wheels, and the upper end of a drive motor mounting steering seat is rotatably connected to a torsion rocker arm of the suspension structure around a vertical axis. The automobile of this application, because the double wheel of the double-wheel steering drive axle of rear axle can turn to and drive independently of the front wheel, has reduced the turning diameter of automobile greatly, can satisfy the trafficability characteristic of automobile at less turning radius curve operating mode.
Description
Technical Field
The utility model belongs to the technical field of vehicles and relates to an automobile.
Background
The existing arrangement mode of the passenger car or the commercial car is the car type adopting a single-motor centralized power source drive axle or the car type adopting a wheel-side drive motor distributed power source drive axle, generally, the rear overhang is long (the rear overhang can not exceed 65% of the wheelbase to limit the length of the rear overhang according to the national regulation), and the wheelbase is short (the area of a low floor area of the passenger car is limited, or the cargo carrying capacity between the wheelbases of the trucks is also limited).
The length of the wheel base is limited by the arrangement space of the power assembly, so that the lengthened space of the wheel base is limited; in the vehicle type adopting the single-wheel steering drive axle, the length of the wheel base is limited due to the bearing capacity of the single wheel, so that the space for lengthening the wheel base is limited.
In the vehicle model adopting the driving axle with the distributed power sources such as the wheel-side driving motor and the like, the turning diameter is limited due to the large-axle-distance arrangement mode because the double-driving axle has no steering function.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the problem that the turning diameter of the automobile model of the existing large-wheelbase arrangement mode is limited is solved.
In order to solve the technical problem, the utility model provides an automobile. The automobile comprises a frame and a rear axle, wherein the rear axle comprises two double-wheel steering drive axles which are oppositely arranged on the left and the right;
the double-wheel steering drive axle comprises a drive motor mounting steering seat, an inner side wheel, an outer side wheel, a first drive motor, a first speed reducing mechanism, a second drive motor, a second speed reducing mechanism and suspension structures, wherein the suspension structures of the two double-wheel steering drive axles form a rear suspension, the inner side wheels are arranged on the inner side of the outer side wheel side by side, the upper end of the drive motor mounting steering seat penetrates through a gap between the inner side wheel and the outer side wheel, the first drive motor is mounted on the outer side of the lower end of the drive motor mounting steering seat, and the second drive motor is mounted on the inner side of the lower end of the drive motor mounting steering seat; an output shaft of the first driving motor is connected with an input end of the first speed reducing mechanism, an output end of the first speed reducing mechanism is connected with an outer wheel, an output shaft of the second driving motor is connected with an input end of the second speed reducing mechanism, and an output end of the second speed reducing mechanism is connected with an inner wheel;
the first speed reducing mechanism, the first driving motor, the second driving motor and the second speed reducing mechanism are sequentially arranged in a space formed by the inner wheels and the outer wheels in a surrounding manner from outside to inside;
the inner side wheel and the outer side wheel form double wheels, the suspension structure is positioned right above the double wheels, and the upper end of the driving motor mounting steering seat is rotatably connected to a torsion rocker arm of the suspension structure around a vertical axis.
Optionally, the suspension structure is an air suspension structure, the air suspension structure includes an upper thrust plate, a lower thrust plate, an air spring and a torsion rocker arm, the upper thrust plate is disposed above the lower thrust plate, the air spring is located between the upper thrust plate and the lower thrust plate, the upper end of the air spring is fixed on the frame, the lower end of the air spring is fixed on the lower thrust plate, the front end of the upper thrust plate and the front end of the lower thrust plate are hinged to the frame, and the rear end of the upper thrust plate and the rear end of the lower thrust plate are hinged to the torsion rocker arm.
Optionally, the air suspension structure further includes a damper, the damper is located between the upper thrust plate and the lower thrust plate, an upper end of the damper is fixed to the frame, and a lower end of the damper is fixed to the lower thrust plate.
Optionally, the output end of the first speed reducing mechanism is connected with the rim of the outer wheel, and the output end of the second speed reducing mechanism is connected with the rim of the inner wheel.
Optionally, the vehicle further comprises a bottom power battery pack located between the front wheelset of the dual wheels.
Optionally, the frame includes a cabin, a rear seat is provided at a rear portion of the cabin, the rear seat is located in a low floor area in front of the suspension structure, and the bottom power battery pack is located below the rear seat.
Optionally, the rear seat is located between the dual wheel steer drive axle and a rear door of the automobile.
Optionally, a plurality of rows of seats are arranged in the middle of the carriage, and the plurality of rows of seats are located in a low floor area between the front door and the rear door.
Optionally, a top power battery pack is arranged on the outer side of the top of the carriage.
Optionally, the wheelbase of the vehicle accounts for 75-85% of the length of the vehicle.
According to the automobile provided by the embodiment of the utility model, the rear axle comprises two double-wheel steering drive axles which are oppositely arranged at the left and the right, the inner wheels are arranged on the inner sides of the outer wheels side by side to form double wheels, and the upper end of the driving motor mounting steering seat is rotatably connected to the torsion rocker arm of the suspension structure around a vertical axis. The first driving motor and the second driving motor can respectively control the rotating speed of the outer wheel and the inner wheel so as to form a rotating speed difference between the outer wheel and the inner wheel; the rotation speed difference enables the ground to generate different friction counter forces on the tire treads of the inner wheels and the outer wheels, and then a steering moment enabling the driving motor mounting steering seat to rotate around a vertical axis is generated, and the double-wheel steering is completed. Because the double wheels can be independent of the steering and driving of the front wheels, the turning diameter of the automobile is greatly reduced, and the trafficability of the automobile in the running working condition of a curve with a small turning diameter can be met.
Drawings
FIG. 1 is a schematic view of an automobile provided by an embodiment of the present invention;
FIG. 2 is another schematic view of an automobile according to an embodiment of the present invention;
FIG. 3 is a schematic view of a dual wheel steer axle of an automobile according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of the dual wheels of a dual wheel steer-drive axle of an automobile according to an embodiment of the present invention;
FIG. 5 is a schematic view of a rear wheel turning diameter of the prior art;
fig. 6 is a schematic view of a turning diameter of the rear wheel according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
10. a frame; 101. a carriage;
20. a dual-wheel steering drive axle; 201. the driving motor is provided with a steering seat; 202. an inboard wheel; 203. an outboard wheel; 204. a first drive motor; 205. a first speed reduction mechanism; 206. a second drive motor; 207. a second reduction mechanism; 208. a suspension structure; 2081. an upper thrust plate; 2082. a lower thrust plate; 2083. an air spring; 2084. a torsion rocker arm; 2085. a shock absorber;
30. a bottom power battery pack;
40. a top power battery pack;
50. a rear seat;
60. a seat;
70. a front wheel;
80. a rear door;
90. a front door.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 to 4, an automobile according to an embodiment of the present invention includes a frame 10, a front axle (not shown) including a left front wheel 70 and a right front wheel 70 and a front suspension (not shown), and a rear axle (not shown) including a left steering drive axle 20 and a right steering drive axle 20.
The double-wheel steering drive axle 20 comprises a drive motor mounting steering seat 201, inner side wheels 202, outer side wheels 203, a first drive motor 204, a first speed reducing mechanism 205, a second drive motor 206, a second speed reducing mechanism 207 and suspension structures 208, wherein the suspension structures 208 of the two double-wheel steering drive axles 20 form a rear suspension, the inner side wheels 202 are arranged on the inner sides of the outer side wheels 203 side by side, the upper end of the drive motor mounting steering seat 201 penetrates out of a gap between the inner side wheels 202 and the outer side wheels 203, the first drive motor 204 is mounted on the outer side of the lower end of the drive motor mounting steering seat 201, and the second drive motor 206 is mounted on the inner side of the lower end of the drive motor mounting steering seat 201; an output shaft of the first driving motor 204 is connected to an input end of the first speed reduction mechanism 205, an output end of the first speed reduction mechanism 205 is connected to the outer wheels 203, an output shaft of the second driving motor 206 is connected to an input end of the second speed reduction mechanism 207, and an output end of the second speed reduction mechanism 207 is connected to the inner wheels 202.
The first speed reduction mechanism 205, the first driving motor 204, the second driving motor 206 and the second speed reduction mechanism 207 are sequentially arranged in a space surrounded by the inner wheel 202 and the outer wheel 203 from outside to inside.
The inner wheel 202 and the outer wheel 203 form a double wheel, the suspension structure 208 is positioned right above the double wheel, and the upper end of the driving motor installation steering base 201 is rotatably connected to a torsion rocker arm 2084 of the suspension structure 208 around a vertical axis.
The second driving motor 206 and the first driving motor 204 are symmetrically arranged at the inner side and the outer side of the driving motor installation steering seat 1, and have the following advantages:
(1) when the double wheels are in dynamic state, the vibration generated when the two motors are combined is eliminated.
(2) When the double wheels are in dynamic state, the rotational inertia of the two motors is the same, and vibration is reduced.
(3) When the dual wheels are in a static state, the wheel loads of the outside wheel 203 and the inside wheel 202 are the same, so that the wear of the outside wheel 203 and the inside wheel 202 is uniform.
(4) When the double wheels steer, the self torque of the two motors is prevented from influencing steering.
The double wheels are steering driving wheels, and are combined with the short front and rear suspensions, so that the mass center and the axle load of the whole vehicle are reasonably distributed, the uniform abrasion of the wheels of the whole vehicle (prolonging the service life of the tire) and the reasonable adhesive force of the double wheels can be met, and the axle load proportion of the braking direction stability required by the front axle load is also met. The double-wheel steering drive axle 20 is an independent suspension bridge, so that the riding comfort of passengers or the cargo carrying perfectness are greatly improved. In an embodiment, the suspension structure 208 is an air suspension structure, the air suspension structure includes an upper thrust plate 2081, a lower thrust plate 2082, an air spring 2083 and a torsion rocker arm 2084, the upper thrust plate 2081 is disposed above the lower thrust plate 2082, the air spring 2083 is located between the upper thrust plate 2081 and the lower thrust plate 2082, the upper end of the air spring 2083 is fixed on the vehicle frame 10, the lower end of the air spring 2083 is fixed on the lower thrust plate 2082, the front end of the upper thrust plate 2081 and the front end of the lower thrust plate 2082 are hinged on the vehicle frame 10, and the rear end of the upper thrust plate 2081 and the rear end of the lower thrust plate 2082 are hinged on the torsion rocker arm 2084.
In an embodiment, the air suspension structure further includes a shock absorber 2085, the shock absorber 2085 is located between the upper thrust plate 2081 and the lower thrust plate 2082, an upper end of the shock absorber 2085 is fixed to the vehicle frame 10, and a lower end of the shock absorber 2085 is fixed to the lower thrust plate 2085.
In one embodiment, the output end of the first speed reduction mechanism 205 is connected to the rim of the outer wheel 203, and the output end of the second speed reduction mechanism 207 is connected to the rim of the inner wheel 202.
In one embodiment, the vehicle further includes a bottom power battery pack 30, the bottom power battery pack 30 being located between the front wheelbases of the dual wheels.
In one embodiment, the vehicle frame 10 includes a compartment 101, a rear seat 50 is disposed at a rear portion of the compartment 101, the rear seat 50 is located forward of the suspension structure 208, and the bottom power battery pack 30 is located below the rear seat 50.
Because the suspension structure 208 is located right above the double wheels, the upper thrust plate 2081 and the lower thrust plate 2082 are higher, a power battery pack (bottom power battery pack 30) can be arranged at the bottom of the space in the front part of the rear axle, and the base of the rear seat 50 can be arranged, so that the bottom space at the rear part of the carriage 101 can be fully utilized.
In one embodiment, the rear seat 50 is located between the dual wheel steer axle 20 and a rear door 80 of the vehicle.
In one embodiment, a plurality of rows of seats 60 are disposed in the middle of the vehicle compartment 101, and the plurality of rows of seats 60 are located between the front door 90 and the rear door 80.
In one embodiment, a top power battery pack 40 is disposed on the top outer side of the vehicle cabin 101. Therefore, more power battery packs can be arranged by fully utilizing the top space of the carriage 101, and the cruising ability is improved.
In one embodiment, the wheelbase of the vehicle is 75-85% of the length of the vehicle. That is, the automobile employs a large wheelbase arrangement. Thus, in combination with the short front and rear suspensions, and no seat is disposed at the rear of the rear suspension, the rear seats 50, 60 are located in a low floor region where the ride comfort and the convenience of getting on/off the vehicle are the best. When the automobile is applied to a passenger car, the passenger carrying riding comfort, the driving/braking safety, the turning passing performance, the backing and warehousing convenience and the like of the passenger car can be obviously improved.
When the automobile is applied to a truck, the rear seat 50 and the seat 60 can be removed, the front passenger seat is designed near a driving seat according to requirements, and the goods transportation completeness, the driving/braking safety, the turning passing performance, the backing and warehousing convenience and the like of the truck can be obviously improved.
According to the automobile provided by the embodiment of the utility model, the first driving motor and the second driving motor can respectively control the rotating speeds of the outer side wheel and the inner side wheel, so that the rotating speed difference is formed between the outer side wheel and the inner side wheel; the rotation speed difference enables the ground to generate different friction counter forces on the tire treads of the inner wheels and the outer wheels, and then a steering moment enabling the driving motor mounting steering seat to rotate around a vertical axis is generated, and the double-wheel steering is completed. Referring to fig. 3 and 4, as the double wheels can be steered and driven independently of the front wheels, the turning diameter of the automobile is greatly reduced, and the trafficability of the automobile in a small-turning-diameter curve running condition can be met. It can also be seen from the parameters in fig. 6 that this large-wheelbase arrangement also meets the yaw value W requirement for turn-through capability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An automobile is characterized by comprising a frame and a rear axle, wherein the rear axle comprises two double-wheel steering drive axles which are oppositely arranged on the left and the right;
the double-wheel steering drive axle comprises a drive motor mounting steering seat, an inner side wheel, an outer side wheel, a first drive motor, a first speed reducing mechanism, a second drive motor, a second speed reducing mechanism and suspension structures, wherein the suspension structures of the two double-wheel steering drive axles form a rear suspension, the inner side wheels are arranged on the inner side of the outer side wheel side by side, the upper end of the drive motor mounting steering seat penetrates through a gap between the inner side wheel and the outer side wheel, the first drive motor is mounted on the outer side of the lower end of the drive motor mounting steering seat, and the second drive motor is mounted on the inner side of the lower end of the drive motor mounting steering seat; an output shaft of the first driving motor is connected with an input end of the first speed reducing mechanism, an output end of the first speed reducing mechanism is connected with an outer wheel, an output shaft of the second driving motor is connected with an input end of the second speed reducing mechanism, and an output end of the second speed reducing mechanism is connected with an inner wheel;
the first speed reducing mechanism, the first driving motor, the second driving motor and the second speed reducing mechanism are sequentially arranged in a space formed by the inner wheels and the outer wheels in a surrounding manner from outside to inside;
the inner side wheel and the outer side wheel form double wheels, the suspension structure is positioned right above the double wheels, and the upper end of the driving motor mounting steering seat is rotatably connected to a torsion rocker arm of the suspension structure around a vertical axis.
2. The automobile of claim 1, wherein the suspension structure is an air suspension structure, the air suspension structure comprises an upper thrust plate, a lower thrust plate, an air spring and a torsion rocker arm, the upper thrust plate is disposed above the lower thrust plate, the air spring is located between the upper thrust plate and the lower thrust plate, the upper end of the air spring is fixed on the frame, the lower end of the air spring is fixed on the lower thrust plate, the front end of the upper thrust plate and the front end of the lower thrust plate are hinged on the frame, and the rear end of the upper thrust plate and the rear end of the lower thrust plate are hinged on the torsion rocker arm.
3. The automobile of claim 2, wherein the air suspension structure further comprises a damper located between the upper thrust plate and the lower thrust plate, an upper end of the damper being fixed to the frame, and a lower end of the damper being fixed to the lower thrust plate.
4. The vehicle of claim 1, wherein the output of the first reduction mechanism is connected to the rim of the outboard wheel and the output of the second reduction mechanism is connected to the rim of the inboard wheel.
5. The vehicle of claim 1 further comprising a bottom power battery pack located between the front wheelset of the dual wheels.
6. The vehicle of claim 5, wherein the frame comprises a cabin having a rear seat disposed at a rear portion thereof, the rear seat being located in a low floor area forward of the suspension structure, the bottom power battery pack being located below the rear seat.
7. The vehicle of claim 6, wherein the rear seat is located between the dual wheel steer axle and a rear door of the vehicle.
8. The automobile of claim 6, wherein a plurality of rows of seats are provided in a middle portion of the vehicle compartment, the plurality of rows of seats being located in a low floor region between the front door and the rear door.
9. The vehicle of claim 6, wherein a top power battery pack is disposed on the top exterior side of the passenger compartment.
10. The vehicle of claim 1, wherein the wheelbase of the vehicle is 75-85% of the overall vehicle length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200989.2U CN216034643U (en) | 2021-05-31 | 2021-05-31 | Automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200989.2U CN216034643U (en) | 2021-05-31 | 2021-05-31 | Automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216034643U true CN216034643U (en) | 2022-03-15 |
Family
ID=80552181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121200989.2U Active CN216034643U (en) | 2021-05-31 | 2021-05-31 | Automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216034643U (en) |
-
2021
- 2021-05-31 CN CN202121200989.2U patent/CN216034643U/en active Active
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