CN219295175U

CN219295175U - Vehicle transmission system and vehicle

Info

Publication number: CN219295175U
Application number: CN202320359548.XU
Authority: CN
Inventors: 桂佳林
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-04
Anticipated expiration: 2033-02-22

Abstract

The disclosure relates to the technical field of vehicles, and in particular relates to a vehicle transmission system and a vehicle. The vehicle transmission system comprises a motor, a main transmission mechanism, a front axle transmission mechanism and a rear axle transmission mechanism, wherein the main transmission mechanism is provided with an input shaft and an output shaft, the motor is connected with the input shaft, and the front axle transmission mechanism and the rear axle transmission mechanism are both connected to the output shaft so as to transmit power to the front axle transmission mechanism and the rear axle transmission mechanism through the output shaft. Through simultaneously transmitting power to the front axle and the rear axle on the output shaft, the front axle and the rear axle can be driven simultaneously by a single motor, and the whole transmission system of the vehicle has reasonable arrangement form and compact structure, and realizes four-wheel drive of the vehicle while reducing the cost.

Description

Vehicle transmission system and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, and in particular relates to a vehicle transmission system and a vehicle.

Background

At present, a common electric vehicle using a single motor as a power source is mostly in a two-wheel driving power mode, the stability of the vehicle cannot be compared with that of a four-wheel driving vehicle, and the four-wheel driving vehicle adopts a double-motor system, and the four-wheel driving of the vehicle is realized by respectively arranging driving devices on front and rear axles.

Disclosure of Invention

In order to solve the technical problems, the present disclosure provides a vehicle transmission system and a vehicle.

A first aspect of the present disclosure provides a vehicle drive system including a motor, a main drive mechanism, a front axle drive mechanism, and a rear axle drive mechanism, the main drive mechanism having an input shaft and an output shaft, the motor being connected with the input shaft, the front axle drive mechanism and the rear axle drive mechanism being both connected to the output shaft to transmit power through the output shaft to the front axle drive mechanism and the rear axle drive mechanism.

Optionally, the main transmission mechanism comprises a pulley transmission assembly comprising a belt, a driving pulley and a driven pulley;

the driving belt wheel is connected with one end of the input shaft, which is far away from the motor, the main transmission mechanism is further provided with an intermediate shaft, the driven belt wheel is arranged at one end of the intermediate shaft, the driving belt wheel and the driven belt wheel are sleeved with the belt, and the intermediate shaft and the input shaft are arranged at the same side of the belt.

Optionally, the main transmission mechanism further comprises a gear reduction transmission assembly, the gear reduction transmission assembly comprises a main reduction driving gear and a main reduction driven gear which are meshed, the main reduction driving gear is arranged at the other end of the intermediate shaft, and the main reduction driven gear is arranged on the output shaft.

Alternatively, the input shaft, the intermediate shaft, and the output shaft are parallel to each other and the axial direction thereof is parallel to the width direction of the vehicle.

Optionally, the front axle transmission mechanism comprises a front axle transmission shaft, and a transfer case driving bevel gear and a transfer case driven bevel gear which are meshed with each other, wherein the transfer case driving bevel gear is arranged on the output shaft, the transfer case driven bevel gear is arranged on the front axle transmission shaft, and the front axle transmission shaft is connected with the front axle to transmit power to the front axle.

Optionally, the front axle transmission shaft comprises a first shaft and a second shaft which are connected, and the first shaft and the second shaft are coaxially connected through a disengaging mechanism;

wherein the disengaging mechanism is a dog tooth clutch or an electromagnetic clutch or a wet clutch or a synchronizer.

Optionally, the rear axle transmission mechanism comprises a rear axle reduction driving gear and a rear axle reduction driven gear which are meshed, the rear axle reduction driving gear is arranged on the output shaft, and the rear axle reduction driven gear is arranged on the rear axle to transmit power to the rear axle.

Optionally, the rear axle includes left semi-axis and right semi-axis, left semi-axis with be provided with differential mechanism between the right semi-axis, differential mechanism includes the shell and locates left semi-axis bevel gear, right semi-axis bevel gear and two planetary gear of shell inside, left semi-axis bevel gear with right semi-axis bevel gear respectively with two planetary gear meshing, left semi-axis bevel gear sets up on the left semi-axis, right semi-axis bevel gear sets up on the right semi-axis, two planetary gear fixes on the inner wall of shell, rear axle speed reduction driven gear is fixed on the shell.

Optionally, the motor cooling device further comprises a cooling pipeline, wherein the cooling pipeline is arranged corresponding to the motor, and cooling liquid is arranged in the cooling pipeline so as to cool the motor through flowing of the cooling liquid in the cooling pipeline.

A second aspect of the present disclosure provides a vehicle comprising a vehicle driveline as described in any one of the embodiments above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the embodiment of the disclosure provides a vehicle transmission system and vehicle, including the motor, main drive mechanism, front axle drive mechanism and rear axle drive mechanism, main drive mechanism has input shaft and output shaft, the motor is connected with main drive mechanism's input shaft, motor output's power is transmitted to main drive mechanism through the input shaft, power is output by main drive mechanism's output shaft after main drive mechanism's transmission, front axle drive mechanism and rear axle drive mechanism all connect on the output shaft, with the transmission power of front axle drive mechanism and rear axle drive mechanism through the output shaft, drive front axle and rear axle rotate, can realize that single motor drives front axle and rear axle simultaneously, whole vehicle's transmission system layout form is reasonable and compact structure, realize the four-wheel drive of vehicle when reduce cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of a vehicle driveline in accordance with an embodiment of the present utility model;

fig. 2 is a schematic view of the rotational direction of a vehicle transmission system according to an embodiment of the present utility model.

Reference numerals:

1. a motor controller; 2. a motor; 3. an input shaft; 4. a driving pulley; 5. a belt; 6. a driven pulley; 7. an intermediate shaft; 8. a main reduction drive gear; 9. a main reduction driven gear; 10. transfer case drive bevel gear; 11. an output shaft; 12. a transfer case driven bevel gear; 13. a disengagement mechanism; 14. a transmission shaft; 15. a rear axle reduction driving gear; 16. a rear axle reduction driven gear; 17. a differential; 18. a left half shaft; 19. a right half shaft; 20. a wheel; 21. a left half shaft bevel gear; 22. right half shaft bevel gear; 23. a planetary gear.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The four-wheel drive transmission system and the vehicle of the electric vehicle disclosed by the utility model are described in detail by specific embodiments:

referring to fig. 1 and 2, a vehicle transmission system according to an embodiment of the present utility model includes a motor 2, a main transmission mechanism, a front axle transmission mechanism, and a rear axle transmission mechanism. The main transmission mechanism is provided with an input shaft 3 and an output shaft 11, the motor 2 is connected with the input shaft 3, and the front axle transmission mechanism and the rear axle transmission mechanism are both connected to the output shaft 11 so as to transmit power to the front axle transmission mechanism and the rear axle transmission mechanism through the output shaft 11.

Specifically, the motor 2 is used for outputting power and is connected with the input shaft 3 of the main transmission mechanism, the power output by the motor 2 is transmitted to the main transmission mechanism through the input shaft 3, the power is output by the output shaft 11 of the main transmission mechanism after being transmitted by the main transmission mechanism, and the front axle transmission mechanism and the rear axle transmission mechanism are both connected on the output shaft 11 so as to transmit power to the front axle transmission mechanism and the rear axle transmission mechanism through the output shaft 11, and the front axle and the rear axle are driven to rotate, so that the front axle and the rear axle can be driven simultaneously by a single motor, and four-wheel drive transmission of a vehicle is realized.

When the motor controller is specifically implemented, the motor controller 1 can control the motor 2 to output power, the power output by the motor 2 is transmitted to the main transmission mechanism through the input shaft 3, the main transmission mechanism can output power to the front axle and the rear axle of the vehicle at the same time, that is, the output power can be divided into two paths through the output shaft 11 of the main transmission mechanism, one path of power is transmitted to the front axle transmission mechanism through the output shaft 11 so as to drive the front axle to rotate by using the front axle transmission mechanism, the other path of power is transmitted to the rear axle transmission mechanism through the output shaft 11 so as to drive the rear axle to rotate by using the rear axle transmission mechanism, and the single motor 2 is used for simultaneously driving the front axle and the rear axle.

In some embodiments, the primary drive mechanism comprises a pulley drive assembly comprising a belt 5, a driving pulley 4 and a driven pulley 6; the belt 5 can use ordinary flat belt, V area or toothed belt etc. and the motor 2 is arranged in the first half of vehicle, and motor 2 is in the position design of keeping away from the gear train, can increase the arrangement space of gear to the transmission system adopts single motor drive, and belt drive can realize the long-range power transmission, in order to guarantee power transmission's stability, can be suitable be provided with overspeed device tensioner, both can guarantee driven stability, also can provide comparatively stable transmission ratio. It should be noted, of course, that a chain transmission or the like may be employed between the input shaft 3 and the intermediate shaft 7, as long as the stability of the power transmission can be ensured.

Specifically, the driving pulley 4 is connected with one end of the input shaft 3 far away from the motor 2, the main transmission mechanism is further provided with an intermediate shaft 7, the driven pulley 6 is arranged at one end of the intermediate shaft 7, power generated by the motor 2 is transmitted to the intermediate shaft 7 from the input shaft 3 by utilizing belt transmission, the belt 5 is sleeved on the driving pulley 4 and the driven pulley 6, and the intermediate shaft 7 and the input shaft 3 are arranged on the same side of the belt 5 as shown in fig. 1, so that arrangement space can be saved, and compactness and rationality of the transmission system arrangement of the whole vehicle are ensured. Of course, it should be noted that in other embodiments, the intermediate shaft 7 and the input shaft 3 may be disposed on different sides of the belt 5 as desired, as long as the present disclosure is not limited thereto and power can be transmitted from the input shaft 3 to the intermediate shaft 7.

In a further embodiment, the main transmission mechanism further comprises a gear reduction transmission assembly, the gear reduction transmission assembly comprises a main reduction driving gear 8 and a main reduction driven gear 9 which are meshed, the main reduction driving gear 8 is arranged at the other end of the intermediate shaft 7, and the main reduction driven gear 9 is arranged on the output shaft 11. Since the output rotation speed of the motor 2 is too large and effective deceleration can not be realized only through belt transmission, a pair of meshed main deceleration driving gears 8 and main deceleration driven gears 9 are designed in the main transmission mechanism, the rotation speed is reduced, the torsion is increased, in the embodiment shown in fig. 1, the main transmission mechanism is designed with a pair of gear pairs to realize deceleration and torsion increase, and of course, if a larger torsion requirement exists, a plurality of pairs of gear pairs can be arranged, so long as the transmission of power can be realized.

It can be understood that the motor controller 1 controls the power generated by the motor 2, the generated power is transmitted to the driving pulley 4 through the input shaft 3, the driving pulley 4 rotates and drives the driven pulley 6 to rotate through the belt 5, so that the power is transmitted to the intermediate shaft 7, the intermediate shaft 7 rotates and drives the main reduction driving gear 8 to rotate, the power can be transmitted to the output shaft 11 through the main reduction driven gear 9 meshed with the main reduction driving gear 8, and the output shaft 11 transmits the power to the front axle and the rear axle, so that the four-wheel drive of the vehicle is realized.

Further, referring to fig. 1, the input shaft 3, the intermediate shaft 7, and the output shaft 11 are parallel to each other and the axial direction thereof is parallel to the width direction of the vehicle, and the horizontal direction shown in fig. 1 is the width direction of the vehicle. Specifically, the main transmission mechanism comprises an input shaft 3, an intermediate shaft 7 and an output shaft 11, the arrangement mode adopted by the main transmission mechanism is triaxial transverse arrangement, namely, the input shaft 3, the intermediate shaft 7 and the output shaft 11 are arranged along the width direction of the automobile body and are mutually parallel, the transverse arrangement enables the power transmission distance to be short, the output direction does not need to be converted, the power loss is small, and the power transmission efficiency is high. Meanwhile, as shown in fig. 1, the motors 2 are also all arranged along the width direction of the vehicle, which is adapted to the input shaft 3; in order to achieve the transmission of power from the front half to the rear half of the vehicle, the belt 5, the driving pulley 4 and the driven pulley 6 are arranged in the longitudinal direction of the vehicle, so that the transmission system is reasonably arranged and the structure is more compact.

In some embodiments, the front axle transmission mechanism includes a front axle transmission shaft 14, and a transfer case drive bevel gear 10 and a transfer case driven bevel gear 12 that are meshed, the transfer case drive bevel gear 10 being disposed on the output shaft 11, the transfer case driven bevel gear 12 being disposed on the front axle transmission shaft 14 to connect with the front axle through the front axle transmission shaft 14 to transmit power to the front axle. That is, the power of the front axle is output from the output shaft 11 by the bevel gear pair, and referring to fig. 1, the output direction of the power is converted by a pair of transfer case drive bevel gears 10 and transfer case driven bevel gears 12 engaged with each other, so that the front axle transmission mechanism and the rear axle transmission mechanism are positioned in the same straight line and at the intermediate position of the vehicle body, making the transmission system arrangement more compact, thereby increasing the front and rear cabin space of the entire vehicle.

Further, the front axle transmission shaft 14 comprises a first shaft and a second shaft which are connected, and the first shaft and the second shaft are coaxially connected through a disengaging mechanism 13; specifically, the power output by the bevel gear pair is transmitted to the front axle through the transmission shaft 14 to realize the driving of the front wheels 20, and with continued reference to fig. 1, the transmission shaft 14 is divided into a first shaft and a second shaft, a disengaging mechanism 13 is arranged between the first shaft and the second shaft, and the first shaft and the second shaft are coaxially connected through the disengaging mechanism 13, so that the two-wheel driving or four-wheel driving mode can be changed by switching on or off the disengaging mechanism 13 according to the driving requirement of a driver or the road condition, and the two-wheel driving and four-wheel driving free conversion is realized.

Specifically, the disengagement mechanism 13 is a dog tooth clutch or an electromagnetic clutch or a wet clutch or a synchronizer. In the implementation, the clutch or the synchronizer can be switched on or off in a manual or pedal mode through a structure such as a deflector rod and the like, and a driver can change a two-wheel drive mode or a four-wheel drive mode by switching on or off the clutch or the synchronizer according to driving requirements or road conditions, so that two-wheel drive and four-wheel drive free conversion is realized. It should be noted that the disengagement mechanism 13 may be any other mechanism that can achieve the connection or disconnection of the first shaft and the second shaft, and the present disclosure is not limited thereto, as long as the connection or disconnection of the front axle transmission device can be achieved, and the conversion between two-drive and four-drive can be achieved.

Further, referring to fig. 1, the rear axle transmission mechanism includes a rear axle reduction driving gear 15 and a rear axle reduction driven gear 16 that are engaged, the rear axle reduction driving gear 15 being provided on the output shaft 11, the rear axle reduction driven gear 16 being provided on the rear axle to transmit power to the rear axle. The speed and torque reduction effect of the rear axle speed reducer can provide larger torsion force to resist the friction force between the ground and the tire so as to drive the wheel 20 to rotate, and then the vehicle can move forwards or backwards.

It should be noted that, in other embodiments, the transfer case may be connected to a rear axle transmission mechanism, where power of the rear axle is output from the output shaft 11 by a bevel gear pair, and power of the front axle is output from the output shaft 11 by a spur gear pair (or a bevel gear pair), which is not limited in this disclosure, as long as it is ensured that the transmission shafts 14 of the front axle and the rear axle are on the same straight line.

Specifically, the rear axle includes a left half shaft 18 and a right half shaft 19, a differential mechanism 17 is provided between the left half shaft 18 and the right half shaft 19, the differential mechanism 17 includes a housing, a left half shaft bevel gear 21, a left half shaft bevel gear 22 and two planetary gears 23 provided inside the housing, the left half shaft bevel gear 21 and the left half shaft bevel gear 22 are respectively meshed with the two planetary gears 23, the left half shaft bevel gear 21 is provided at one end of the left half shaft 18, the other end of the left half shaft 18 is connected with a wheel 20, the left half shaft bevel gear 22 is provided at one end of the right half shaft 19, the other end of the right half shaft 19 is connected with a wheel 20, the two planetary gears 23 are fixed on the inner wall of the housing, and the rear axle reduction driven gear 16 is fixed on the housing, as shown in fig. 1. Specifically, the casing of the differential 17 is sleeved on the left half shaft 18 and the right half shaft 19, when the rear axle speed reduction driven gear 16 rotates, the differential 17 rotates along with the rotation of the casing, and two planetary gears 23 fixed inside the differential 17 rotate along with the rotation of the casing, it can be understood that the left half shaft bevel gear 21 and the left half shaft bevel gear 22 rotate along with the rotation of the planetary gears 23, and then the left half shaft bevel gear 21 drives the left half shaft 18 to rotate, and the left half shaft bevel gear 22 drives the right half shaft 19 to rotate, thereby driving the wheels 20 to rotate to realize the forward or backward movement of the vehicle.

It can be understood that the left half shaft 18 and the right half shaft 19 are connected through the differential mechanism 17, so that the left rear wheel 20 and the right rear wheel 20 rotate at different rotation speeds, the driving wheels 20 at two sides are ensured to do pure rolling motion, and the turning radius can be reduced when the vehicle turns.

It should be noted that, the front axle transmission mechanism may also include a front axle reducer, a front axle differential mechanism, a front axle left half axle and a front axle right half axle, and the specific power transmission is similar to that of the rear axle transmission mechanism, and finally, the differential rotation between the two half axles can be realized through the front axle transmission mechanism.

Referring to fig. 2, when the motor 2 is rotated forward, that is, the rotation direction of the motor 2 is the rotation direction in which the vehicle can be advanced, the belt 5, the driving pulley 4, the driven pulley 6 and the main reduction driving gear 8 are rotated forward with the motor 2, and the main reduction driven gear 9 engaged with the main reduction driving gear 8 is rotated in the opposite direction, so that the output shaft 11 and the transfer drive bevel gear 10 and the rear axle reduction driving gear 15 provided on the output shaft 11 are rotated in the opposite direction, that is, in the reverse direction, when the power is transmitted to the rear axle reduction driving gear 15, the rotation direction of the rear axle reduction driven gear 16 engaged with the same is as the rotation direction of the motor 2, the power transmitted to the differential 17 is transmitted to the left half shaft 18 and the right half shaft 19 through the gear sets inside the same, and finally the tire is rotated in the same direction, thereby realizing the advance of the vehicle, and similarly, when the motor 2 is rotated in the reverse direction, the reverse of the vehicle can be realized.

In some embodiments, the vehicle transmission system of the present disclosure further includes a cooling line, and when the motor 2 outputs power, the temperature of the transmission system is too high under the condition that the input shaft 3 rotates at a high speed, and thus the motor 2 needs to be cooled, and the cooling line is provided corresponding to the motor 2, and a cooling liquid is provided in the cooling line to cool the motor 2 by flowing the cooling liquid in the cooling line. Specifically, the cooling liquid may be water or oil, and the motor 2 is cooled by water cooling, oil cooling, or the like.

Other embodiments of the present disclosure provide a vehicle including a vehicle driveline as in any one of the embodiments above.

The vehicle provided in the embodiments of the present disclosure includes the vehicle transmission system according to any one of the embodiments, so that the vehicle transmission system according to any one of the embodiments has the beneficial effects described above, and will not be described herein.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a vehicle transmission system, its characterized in that includes motor, main drive mechanism, front axle drive mechanism and rear axle drive mechanism, main drive mechanism has input shaft and output shaft, the motor with the input shaft is connected, front axle drive mechanism with rear axle drive mechanism all connects on the output shaft, in order to pass through the output shaft front axle drive mechanism with rear axle drive mechanism transmits power.

2. The vehicle driveline of claim 1, wherein the primary drive mechanism comprises a pulley drive assembly comprising a belt, a drive pulley, and a driven pulley;

3. The vehicle driveline of claim 2, wherein the main drive mechanism further comprises a gear reduction drive assembly comprising a meshed main reduction drive gear disposed at the other end of the intermediate shaft and a main reduction driven gear disposed on the output shaft.

4. A vehicle transmission system according to claim 3, wherein the input shaft, the intermediate shaft and the output shaft are parallel to each other and the axial direction thereof is parallel to the width direction of the vehicle.

5. The vehicle driveline of any one of claims 1 to 4, wherein the front axle drive mechanism comprises a front axle drive shaft, and a transfer drive bevel gear and a transfer driven bevel gear engaged with each other, the transfer drive bevel gear being disposed on the output shaft, the transfer driven bevel gear being disposed on the front axle drive shaft, the front axle drive shaft being connected to the front axle to transfer power thereto.

6. The vehicle driveline of claim 5, wherein the front axle drive shaft comprises first and second connected shafts, the first and second shafts being coaxially connected by a disconnect mechanism;

7. The vehicle transmission system according to any one of claims 1 to 4, characterized in that the rear axle transmission mechanism includes a rear axle reduction driving gear and a rear axle reduction driven gear that are meshed, the rear axle reduction driving gear being provided on the output shaft, the rear axle reduction driven gear being provided on a rear axle to transmit power to the rear axle.

8. The vehicle driveline of claim 7, wherein the rear axle comprises a left axle shaft and a right axle shaft, a differential is disposed between the left axle shaft and the right axle shaft, the differential comprises a housing, a left axle bevel gear, a right axle bevel gear and two planetary gears disposed inside the housing, the left axle bevel gear and the right axle bevel gear are respectively meshed with the two planetary gears, the left axle bevel gear is disposed on the left axle shaft, the right axle bevel gear is disposed on the right axle shaft, the two planetary gears are fixed on an inner wall of the housing, and the rear axle reduction driven gear is fixed on the housing.

9. The vehicle power transmission system according to any one of claims 1 to 4, characterized by further comprising a cooling line provided in correspondence with the motor, a cooling liquid being provided in the cooling line to cool down the motor by flowing the cooling liquid in the cooling line.

10. A vehicle comprising a vehicle driveline as claimed in any one of claims 1 to 9.