CN217514965U - Two electromechanical bridge and vehicles that drive of two grades of bi-motor - Google Patents

Abstract

The utility model belongs to the technical field of electric vehicles, a double-gear double-motor electric drive bridge and a vehicle are disclosed, wherein, the double-gear double-motor electric drive bridge comprises two driving mechanisms which are symmetrically distributed, and each driving mechanism comprises a motor, a transmission assembly and a locking assembly; the transmission assembly comprises a sun gear fixedly connected to an output shaft of the motor, a planet carrier fixedly connected to a wheel shaft, planet gears fixedly connected to the planet carrier, and a gear ring meshed with the planet gears, the planet gears are also meshed with the sun gear, the wheel shaft is configured to be connected with or separated from the output shaft of the motor, and the locking assembly is configured to lock or unlock the gear ring. Through the double-gear double-motor drive axle, the gear shifting and speed regulating can be carried out on the wheels, the differential rotation of the wheels on two wheel shafts can be realized so as to realize the steering of the vehicle, the single-side wheels can be driven independently, and the double-gear double-motor drive axle is simple in structure, small in size and high in transmission efficiency.

Description

Two electromechanical bridge and vehicles of driving of two grades

Technical Field

The utility model relates to an electric vehicle technical field especially relates to a two shelves of two motor-driven bridge and vehicle.

Background

The new energy vehicle of electric drive is the trend of the world and future development direction, wherein, the transaxle is regarded as common actuating mechanism, wide application in electric automobile technical field, in order to adapt to the technological development of new energy electric automobile, the electric transaxle driven by driving motor has appeared in the market, but the electric transaxle on the market is mostly a grade of simple structure now, the rotational speed of motor is decided by the wheel speed when low-speed traveling and high-speed traveling, the rotational speed of motor is unadjustable in the driving process, the efficiency when resulting in the moment when traveling at low-speed and high-speed can not be satisfied simultaneously, can't satisfy present increasingly high technical requirement to the new energy vehicle. In order to avoid the phenomenon that the rotating speed of the motor is not adjustable, the double-gear double-motor driven bridge is produced. However, the existing double-gear double-motor electric drive bridge has the defects that the speed difference of the left wheel and the right wheel is adjusted through a differential mechanism, so that the structure of the double-gear electric drive bridge is complex, the size is large, and the transmission efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two electromechanical bridge and vehicles that drive of two grades to solve two electromechanical bridge that drive among the prior art of two grades and all adjust the wheel speed difference of controlling the two-wheeled through differential mechanism, lead to the structure of two grades of electric bridge structures complicated, it is bulky, and the problem that transmission efficiency is low.

To achieve the purpose, the utility model adopts the following technical proposal:

a double-gear double-motor electric drive bridge comprises two driving mechanisms which are symmetrically distributed, wherein each driving mechanism comprises a motor, a transmission assembly and a locking assembly;

the transmission assembly comprises a sun gear fixedly connected to an output shaft of the motor, a planet carrier fixedly connected to a wheel shaft, planet gears fixedly connected to the planet carrier, and a ring gear meshed with the planet gears, the planet gears are also meshed with the sun gear, the wheel shaft is configured to be connected with or disconnected from an output shaft of the motor, and the locking assembly is configured to lock or unlock the ring gear.

Preferably, the transmission assembly includes a first clutch, the first clutch includes a first connection end and a second connection end, the first connection end is fixedly connected with the output shaft of the motor, and the second connection end is fixedly connected with the wheel axle.

Preferably, the first clutch is an electromagnetic clutch.

Preferably, the locking assembly comprises a locking wheel, the locking wheel is meshed with the gear ring, and the locking wheel can lock or unlock the gear ring.

Preferably, the gear ring comprises an outer gear ring and an inner gear ring, the inner gear ring is meshed with the planet gear, and the outer gear ring is meshed with the locking wheel.

Preferably, the locking assembly further comprises a second clutch, the second clutch comprises a third connecting end and a fourth connecting end, the third connecting end is fixedly connected with the wheel shaft of the locking wheel, and the fourth connecting end is fixedly connected with the shell of the double-gear double-motor electric drive bridge.

Preferably, the second clutch is an electromagnetic clutch.

Preferably, the housing is located between the two second clutches.

Preferably, the two motors are arranged at intervals and are located between the two transmission assemblies.

A vehicle comprises the double-gear double-motor driven bridge.

The utility model has the advantages that:

an object of the utility model is to provide a two electromechanical bridge that drive of two grades, this two electromechanical bridge that drive of two grades can adjust the vehicle and carry out low-speed driving, high-speed driving, turn and unilateral wheel individual drive, concretely, when the vehicle is gone at low-speed, the axletree is configured as the output shaft separation with the motor, locking subassembly locking ring gear, the output shaft of motor drives sun gear and planet wheel meshing, the planet wheel still meshes with the ring gear, make the planet wheel drive the planet carrier and rotate around the output shaft of motor, planet carrier and axletree fixed connection, thereby drive the axletree and rotate, thereby drive the low-speed driving of vehicle; when the vehicle runs at a high speed, the wheel shaft is configured to be connected with the output shaft of the motor, the locking assembly unlocks the gear ring, the output shaft of the motor directly drives the wheel shaft to synchronously rotate, so that the vehicle is driven to run at a high speed, and the output shaft of the motor also drives the sun gear, the planet gear and the gear ring to synchronously rotate; when the vehicle turns in the process of low-speed running or high-speed running, the motors of the two driving mechanisms are controlled to output different rotating speeds respectively, and it can be understood that in the process, the transmission ratios of the two transmission assemblies are the same, so that the vehicle turns by adjusting the rotating speeds of the two motors; secondly, when the wheel on one wheel axle loses adhesion relative to the ground, the motor on the side can be powered off, and the motor of the other driving mechanism drives the wheel on the wheel axle to rotate so as to help the vehicle get rid of the trouble. To sum up, can shift the speed governing through this two electromechanical bridge of two grades of wheels, also enable two epaxial wheel differential rotations of wheel and turn to in order to realize the vehicle, also can realize driving unilateral wheel alone, and this two electromechanical bridge of two grades of two electromechanical bridge simple structure, small, transmission efficiency is high.

The utility model also provides a vehicle, this vehicle adopt foretell two electromechanical bridge of shifting, can shift the speed governing to the wheel, also enable two epaxial wheel differential rotations of axletree and turn to in order to realize the vehicle, also can realize the unilateral wheel individual drive.

Drawings

Fig. 1 is a schematic structural diagram of a dual-gear dual-motor electric bridge according to an embodiment of the present invention.

In the figure:

1. a drive mechanism; 11. a motor; 12. a transmission assembly; 121. a sun gear; 122. a planet carrier; 123. a planet wheel; 124. a ring gear; 125. a first clutch; 1251. a first connection end; 1252. a second connection end; 13. a locking assembly; 131. locking wheels; 132. a second clutch; 1321. a third connection end; 1322. a fourth connection end; 14. a housing;

2. a wheel shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a double-gear double-motor driven bridge, wherein, as shown in figure 1, the double-gear double-motor driven bridge comprises two driving mechanisms 1 which are symmetrically distributed, and each driving mechanism 1 comprises a motor 11, a transmission assembly 12 and a locking assembly 13; the transmission assembly 12 includes a sun gear 121 fixedly connected to the output shaft of the motor 11, a planet carrier 122 fixedly connected to the wheel shaft 2, planet gears 123 fixedly connected to the planet carrier 122, and an annulus gear 124 engaged with the planet gears 123, the planet gears 123 also engaged with the sun gear 121, the wheel shaft 2 is configured to be connectable with or disconnectable from the output shaft of the motor 11, and the locking assembly 13 is configured to be able to lock or unlock the annulus gear 124.

The double-gear double-motor driven axle can adjust a vehicle to perform low-speed running, high-speed running, turning and single-side wheel individual driving, as shown in fig. 1, specifically, when the vehicle runs at low speed, the wheel shaft 2 is configured to be separated from an output shaft of the motor 11, the locking assembly 13 locks the gear ring 124, the output shaft of the motor 11 drives the sun wheel 121 and the planet wheels 123 to be meshed, the planet wheels 123 are also meshed with the gear ring 124, so that the planet wheels 123 drive the planet carrier 122 to rotate around the output shaft of the motor 11, and the planet carrier 122 is fixedly connected with the wheel shaft 2, so as to drive the wheel shaft 2 to rotate, thereby driving the vehicle to run at low speed; when the vehicle runs at a high speed, the wheel shaft 2 is configured to be connected with the output shaft of the motor 11, the locking assembly 13 unlocks the gear ring 124, and the output shaft of the motor 11 directly drives the wheel shaft 2 to synchronously rotate, so as to drive the vehicle to run at a high speed, and it can be understood that the output shaft of the motor 11 also drives the sun gear 121, the planet gear 123 and the gear ring 124 to synchronously rotate; when the vehicle turns in the process of low-speed running or high-speed running, the motors 11 of the two driving mechanisms 1 are controlled to output different rotating speeds respectively, and it can be understood that in the process, the transmission ratios of the two transmission assemblies 12 are the same, so that the vehicle turns by adjusting the rotating speeds of the two motors 11; secondly, when the wheel on one wheel shaft 2 loses adhesion with the ground, the motor 11 on the side can be powered off, and the motor 11 of the other driving mechanism 1 drives the wheel on the wheel shaft 2 to rotate so as to help the vehicle get out of the trouble. In conclusion, the double-gear double-motor electric drive axle can shift gears and regulate speed of wheels, can also enable the wheels on the two wheel shafts 2 to rotate in a differential mode so as to achieve steering of the vehicle, and can also achieve single-side wheel independent driving.

It will be appreciated that the two drive configurations correspond to two drive wheels of the vehicle respectively.

As shown in fig. 1, the transmission assembly 12 includes a first clutch 125, the first clutch 125 includes a first connection end 1251 and a second connection end 1252, the first connection end 1251 is fixedly connected to the output shaft of the motor 11, and the second connection end 1252 is fixedly connected to the wheel shaft 2. Specifically, when the vehicle runs at a low speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are separated, so that the wheel shaft 2 is separated from the output shaft of the motor 11, the locking assembly 13 locks the ring gear 124, the output shaft of the motor 11 drives the sun gear 121 and the planet gear 123 to be engaged, the planet gear 123 is also engaged with the ring gear 124, so that the planet gear 123 drives the planet carrier 122 to rotate around the output shaft of the motor 11, and the planet carrier 122 is fixedly connected with the wheel shaft 2, so as to drive the wheel shaft 2 to rotate, thereby driving the vehicle to run at a low speed; when the vehicle runs at a high speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are connected, so that the wheel shaft 2 is connected with the output shaft of the motor 11, the locking assembly 13 unlocks the gear ring 124, and the output shaft of the motor 11 directly drives the wheel shaft 2 to rotate synchronously, thereby driving the vehicle to run at a high speed.

Specifically, in the present embodiment, the first clutch 125 is an electromagnetic clutch. So as to control the connection or disconnection of the first connection terminal 1251 and the second connection terminal 1252. Specifically, the first clutch 125 may be one of a dry-type multi-plate electromagnetic clutch and a wet-type multi-plate electromagnetic clutch, and as an alternative, the first clutch 125 may be replaced with another clutch such as a dog clutch or a diaphragm spring clutch, or the first clutch 125 may be replaced with another structure having an output shaft for connecting and disconnecting the wheel shaft 2 and the motor 11.

As shown in fig. 1, the locking assembly 13 includes a locking wheel 131, the locking wheel 131 is engaged with the gear ring 124, and the locking wheel 131 can lock or unlock the gear ring 124. Specifically, when the vehicle runs at a low speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are separated, so that the wheel shaft 2 is separated from the output shaft of the motor 11, the lock wheel 131 locks the ring gear 124, the output shaft of the motor 11 drives the sun gear 121 and the planet gear 123 to be meshed, the planet gear 123 is also meshed with the ring gear 124, so that the planet gear 123 drives the planet carrier 122 to rotate around the output shaft of the motor 11, and the planet carrier 122 is fixedly connected with the wheel shaft 2, so that the wheel shaft 2 is driven to rotate, and the vehicle runs at a low speed; when the vehicle runs at a high speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are connected, so that the wheel shaft 2 is connected with the output shaft of the motor 11, the locking wheel 131 unlocks the gear ring 124, and the output shaft of the motor 11 directly drives the wheel shaft 2 to synchronously rotate, thereby driving the vehicle to run at a high speed.

Specifically, as shown in fig. 1, the locking assembly 13 further includes a second clutch 132, the second clutch 132 includes a third connecting end 1321 and a fourth connecting end 1322, the third connecting end 1321 is fixedly connected to the axle of the locking wheel 131, and the fourth connecting end 1322 is fixedly connected to the housing 14 of the dual-gear dual-electric drive bridge. Specifically, when the vehicle runs at a low speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are separated, so that the wheel shaft 2 is separated from the output shaft of the motor 11, the third connection end 1321 and the fourth connection end 1322 are connected, the wheel shaft of the locking wheel 131 is locked by the second clutch 132, so that the ring gear 124 is locked, the output shaft of the motor 11 drives the sun gear 121 and the planet gears 123 to mesh, the planet gears 123 are also meshed with the ring gear 124, so that the planet gears 123 drive the planet carrier 122 to rotate around the output shaft of the motor 11, and the planet carrier 122 is fixedly connected with the wheel shaft 2, so as to drive the wheel shaft 2 to rotate, so that the vehicle runs at a low speed; when the vehicle runs at a high speed, the first connection end 1251 and the second connection end 1252 of the first clutch 125 are connected, so that the wheel shaft 2 is connected with the output shaft of the motor 11, the third connection end 1321 and the fourth connection end 1322 are separated, the wheel shaft of the locking wheel 131 is unlocked, the gear ring 124 is unlocked, the output shaft of the motor 11 directly drives the wheel shaft 2 to synchronously rotate, so that the vehicle is driven to run at a high speed, it can be understood that the output shaft of the motor 11 also drives the sun gear 121, the planet gear 123 and the gear ring 124 to synchronously rotate, and the gear ring 124 is meshed with the locking wheel 131. Wherein the housing 14 is fixedly connected with the frame of the vehicle.

Further specifically, the second clutch 132 is an electromagnetic clutch. So as to control the connection or separation of the third connection terminal 1321 and the fourth connection terminal 1322. Specifically, the second clutch 132 may be one of a dry-type multi-plate electromagnetic clutch and a wet-type multi-plate electromagnetic clutch, and as an alternative, the second clutch 132 may be replaced with another clutch such as a dog clutch or a diaphragm spring clutch, or the second clutch 132 may be replaced with another structure having a housing 14 that connects and disconnects the locking wheel 131 and the two-speed dual motor driven bridge.

Further specifically, as shown in fig. 1, the ring gear 124 includes an outer ring gear and an inner ring gear, the inner ring gear is engaged with the planet gears 123, and the outer ring gear is engaged with the lock gear 131. The arrangement is such that the planet gears 123 can be engaged with the ring gear 124 and the sun gear 121 simultaneously, and the volume of the planet carrier 122 can be reduced.

Preferably, as shown in fig. 1, the housing 14 is located between the two second clutches 132. The size of the double-gear double-motor driven bridge can be further reduced.

Preferably, as shown in fig. 1, two motors 11 are arranged at intervals and are located between two transmission assemblies 12. The size of the double-gear double-motor driven bridge can be further reduced.

The utility model also provides a vehicle, this vehicle adopt foretell two electromechanical bridge of shifting, can shift the speed governing to the wheel, also enable the wheel differential rotation on two axletrees 2 in order to realize that the vehicle turns to, also can realize the unilateral wheel individual drive.

Specifically, the vehicle includes a controller electrically connected to the first clutch 125 and the second clutch 132, the controller being capable of controlling the connection or disconnection of the first connection terminal 1251 and the second connection terminal 1252 of the first clutch 125 and also capable of controlling the connection or disconnection of the third connection terminal 1321 and the fourth connection terminal 1322 of the second clutch 132.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The double-gear double-motor electric drive bridge is characterized by comprising two driving mechanisms (1) which are symmetrically distributed, wherein each driving mechanism (1) comprises a motor (11), a transmission assembly (12) and a locking assembly (13);

the transmission assembly (12) comprises a sun gear (121) fixedly connected to an output shaft of the motor (11), a planet carrier (122) fixedly connected to a wheel shaft (2), planet gears (123) fixedly connected to the planet carrier (122), and an annulus gear (124) meshed with the planet gears (123), the planet gears (123) are also meshed with the sun gear (121), the wheel shaft (2) is configured to be connected with or separated from the output shaft of the motor (11), and the locking assembly (13) is configured to be capable of locking or unlocking the annulus gear (124).

2. The dual-gear dual-electromechanical drive axle according to claim 1, characterized in that the transmission assembly (12) comprises a first clutch (125), the first clutch (125) comprising a first connection end (1251) and a second connection end (1252), the first connection end (1251) being fixedly connected to the output shaft of the electric machine (11), the second connection end (1252) being fixedly connected to the wheel axle (2).

3. The dual gear dual electric motor driven bridge according to claim 2, characterized in that the first clutch (125) is an electromagnetic clutch.

4. The double gear double electric motor driven bridge according to claim 1, characterized in that the locking assembly (13) comprises a locking wheel (131), the locking wheel (131) being in engagement with the toothed ring (124), the locking wheel (131) being capable of locking or unlocking the toothed ring (124).

5. Double-gear double-electromechanical drive bridge according to claim 4, characterized in that the gear ring (124) comprises an outer gear ring and an inner gear ring, the inner gear ring being in mesh with the planet wheels (123) and the outer gear ring being in mesh with the locking wheel (131).

6. The double-gear double-electromechanical axle according to claim 4, characterized in that the locking assembly (13) further comprises a second clutch (132), the second clutch (132) comprising a third connection end (1321) and a fourth connection end (1322), the third connection end (1321) being fixedly connected to the axle of the locking wheel (131), the fourth connection end (1322) being fixedly connected to the housing (14) of the double-gear double-electromechanical axle.

7. The dual gear dual electric motor driven bridge according to claim 6, wherein the second clutch (132) is an electromagnetic clutch.

8. The dual gear dual electromechanical axle according to claim 6, wherein said housing (14) is located between two of said second clutches (132).

9. Double gear double electric motor driven bridge according to any of claims 1-8, characterized in that two electric motors (11) are arranged spaced apart and each located between two transmission assemblies (12).

10. A vehicle, characterized in that it comprises a two-gear two-motor electric drive bridge according to any of claims 1 to 9.

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