CN110654224A - Wheel driving system and vehicle - Google Patents
Wheel driving system and vehicle Download PDFInfo
- Publication number
- CN110654224A CN110654224A CN201810713999.2A CN201810713999A CN110654224A CN 110654224 A CN110654224 A CN 110654224A CN 201810713999 A CN201810713999 A CN 201810713999A CN 110654224 A CN110654224 A CN 110654224A
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- China
- Prior art keywords
- wheel
- gear
- housing
- hub
- planetary gear
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Retarders (AREA)
Abstract
The invention discloses a wheel driving system and a vehicle, wherein the wheel driving system comprises: wheel limit motor, reduction gear and planetary gear mechanism, the reduction gear includes: the input gear and the output gear are meshed with each other in the vertical direction, and the input gear is connected with the wheel-side motor; the planetary gear mechanism includes: the planetary gear is arranged on the planet carrier, the planetary gear is meshed between the sun gear and the gear ring, the sun gear is connected with the output gear, the planet carrier is fixed, and the gear ring is connected with a hub of a wheel and transmits power to the hub. Therefore, the wheel edge driving system is more compact in structure and beneficial to widening the width of a vehicle channel by matching the wheel edge motor, the speed reducer and the planetary gear mechanism, the structure of the wheel edge driving system is simpler, and the transmission efficiency of the wheel edge driving system can be improved.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a wheel-side driving system and a vehicle with the same.
Background
For a passenger car driven by a traditional central engine or a motor, a rear-section bottom plate generally adopts a stepping type high-low plate, and a full-channel low-floor type structure cannot be realized.
The main reducer of the wheel-side drive axle in the prior art uses two-set split type two-stage reduction transmission gear pair, so that the axial dimension of the reducer is large, the vehicle rear floor can only adopt a step type high floor, the full-channel low floor type structure is made reluctantly, the channel width is also very narrow, the trafficability characteristic is influenced, and some overseas national regulations have certain requirements on the channel width of the full-channel low floor type structure, and the overseas operation of the domestic passenger car brand popularization is also influenced.
In the related technology, the planetary gear mechanism of the planetary reducer adopts a mode of fixing a gear ring and outputting a planet carrier, the planet carrier is connected with the shell of the planetary reducer for transmission, the connection mode has higher requirements, and the problem of failure of the planetary reducer mechanism caused by loose connection exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a wheel-side drive system which is more compact and facilitates widening of the vehicle tunnel width.
The invention further provides a vehicle.
The wheel-side drive system according to the present invention includes: wheel limit motor, reduction gear and planetary gear mechanism, the reduction gear includes: the input gear and the output gear are meshed with each other in the vertical direction, and the input gear is connected with the wheel-side motor; the planetary gear mechanism includes: the planetary gear is arranged on the planet carrier, the planetary gear is meshed between the sun gear and the gear ring, the sun gear is connected with the output gear, the planet carrier is fixed, and the gear ring is connected with a hub of a wheel and transmits power to the hub.
According to the wheel-side driving system, the wheel-side motor, the speed reducer and the planetary gear mechanism are matched, so that the structure of the wheel-side driving system is more compact, the width of a vehicle channel is widened, the structure of the wheel-side driving system is simpler, and the transmission efficiency of the wheel-side driving system can be improved.
In some embodiments of the present invention, the speed reducer further includes an output shaft to which the output gear is fixed, the output shaft being integrated with the sun gear.
In some embodiments of the invention, the decelerator comprises: the first shell is fixedly connected with the planet carrier.
In some embodiments of the invention, the planet carrier is fixed to the first housing by fasteners.
In some embodiments of the invention, the decelerator comprises: the wheel edge motor is provided with a motor base, and the motor base is connected with the first shell.
In some embodiments of the present invention, the planetary gear mechanism further includes a second housing, the ring gear is integrated on an inner wall of the second housing, and the second housing is fixedly connected to the hub.
In some embodiments of the invention, the second housing has a ring of internal teeth formed on an inner wall thereof, the internal teeth forming the ring gear.
In some embodiments of the present invention, the output power of the wheel-side motor sequentially passes through the input gear, the output gear, the sun gear, the planet gear, the ring gear, and the second housing, and then outputs the power to the hub of the wheel.
In some embodiments of the present invention, the wheel-side driving system further comprises: a brake, the brake comprising: the brake disc is fixed with the hub, and the brake air chamber is connected with the brake calipers; the speed reducer includes: a first housing, the brake caliper being fixed with the first housing.
According to the invention, the vehicle comprises the wheel side driving system.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a wheel-side drive system according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the planetary gear mechanism, the wheel and the hub of the wheel-side drive system according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a planetary gear mechanism of a wheel-side drive system according to an embodiment of the present invention;
FIG. 4 is an exploded view of the planetary gear mechanism and hub of the wheel-side drive system according to an embodiment of the present invention;
fig. 5 is an enlarged view at a in fig. 4.
Reference numerals:
the wheel-side drive system 10;
a wheel-side motor 1;
a speed reducer 2; an input gear 21; an output gear 22; an output shaft 23; a first housing 24; an input shaft 25;
a planetary gear mechanism 3; a sun gear 31; the planet wheels 32; a carrier 33; the ring gear 34;
a second housing 35; a housing portion 351; a mounting portion 352; mounting holes 353;
a brake 4; a brake chamber 41; a brake caliper 42; a brake disk 43; brake disk fixing bolts 44;
a fastener 5; an end cap 6;
a wheel 20;
a hub 30; hub bolts 301; a hub bearing 302.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A wheel-side drive system 10 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 1 to 5, a wheel-side drive system 10 according to an embodiment of the present invention includes: wheel limit motor 1, reduction gear 2 and planetary gear mechanism 3. The decelerator 2 may include: an input gear 21 and an output gear 22 which are vertically meshed with each other, wherein the input gear 21 is connected with the wheel edge motor 1. Note that the vertical direction refers to the up-down direction in fig. 1.
The planetary gear mechanism 3 may include: sun gear 31, planet gears 32, planet carrier 33 and ring gear 34, planet gears 32 can be arranged on planet carrier 33, planet gears 32 can be freely sleeved on planet carrier 33 through bearings, planet gears 32 can freely rotate relative to planet carrier 33, planet gears 32 are meshed between sun gear 31 and ring gear 34, sun gear 31 is connected with output gear 22, planet carrier 33 is fixed, ring gear 34 is connected with hub 30 of wheel 20 and transmits the power of hub motor 1 to hub 30,
wherein, reduction gear 2 of this application adopts input gear 21 and output gear 22 to reduce speed and increase the torsion, satisfy the dynamic property of whole car, reduction gear 2 passes through input gear 21 and output gear 22 and meshes in vertical mutually, can make wheel limit actuating system 10's structure simpler, can make reduction gear 2 compacter in the ascending structure of axial direction, the size that sets up like this and to make reduction gear 2 reduces, be favorable to widening transaxle axle housing width, can make and reach as far as possible channel width in the vehicle, thereby can widen vehicle channel width. Further, since the carrier 33 is fixed, the power is directly output to the hub 30 via the ring gear 34, so that the loss of power can be reduced, and the power transmission efficiency can be improved.
Therefore, the wheel-side driving system 10 can be more compact in structure through the cooperation of the wheel-side motor 1, the speed reducer 2 and the planetary gear mechanism 3, the width of a vehicle channel can be widened, the structure of the wheel-side driving system 10 can be simpler, and the transmission efficiency of the wheel-side driving system 10 can be improved.
In some examples of the present invention, as shown in fig. 1 and 2, the decelerator 2 may further include: the output shaft 23, the output gear 22 can be fixedly arranged on the output shaft 23, and the output gear 22 and the output shaft 23 can be rigidly connected together, so that the output gear 22 can be stably assembled on the output shaft 23, the output gear 22 and the output shaft 23 can be prevented from sliding relatively, and the output gear 22 can be ensured to rotate along with the output shaft 23.
Moreover, the output shaft 23 and the sun gear 31 may be integrated, wherein when the wheel-side driving system 10 operates, the power of the speed reducer 2 may be transmitted to the sun gear 31 through the output shaft 23, so as to improve the overall structural strength of the sun gear 31 and the output shaft 23, and prevent the joint between the sun gear 31 and the output shaft 23 from being broken, thereby preventing the sun gear 31 from being separated from the output shaft 23, and further ensuring that the sun gear 31 and the output shaft 23 can rotate at the same speed.
In some examples of the invention, as shown in fig. 1 and 2, the reducer 2 may include: the first housing 24 and the hub 30 may be freely fitted to the first housing 24 by a hub bearing 302, the hub 30 may rotate with respect to the first housing 24, and the first housing 24 and the carrier 33 are fixedly connected. It should be noted that, after the carrier 33 is fixed to the first casing 24, the carrier 33 cannot rotate, so that the carrier 33 can be firmly assembled to the first casing 24, and the carrier 33 can be prevented from falling off from the first casing 24.
In some examples of the invention, as shown in fig. 2, the planet carrier 33 may be secured to the first housing 24 by fasteners 5. It should be noted that the fastening member 5 may be configured as a nut, and the planet carrier 33 may be fixed on the first casing 24 by the nut, wherein the fastening performance of the nut is good, so that the planet carrier 33 can be better and stably assembled on the first casing 24, and the planet carrier 33 can be further prevented from falling off from the first casing 24, thereby improving the working performance of the fastening member 5.
In some examples of the invention, as shown in fig. 1 and 2, the reducer 2 may include: first casing 24, wheel limit motor 1 can be provided with the motor cabinet, and the motor cabinet links to each other with first casing 24, and wherein, wheel limit motor 1 can be through the one end fixed connection of bolt with the motor cabinet, and reduction gear 2 can be through the other end fixed connection of bolt with the motor cabinet, so set up and can assemble wheel limit motor 1, motor cabinet and reduction gear 2 reliably together, can promote the overall structure intensity of wheel limit motor 1, motor cabinet and reduction gear 2.
In some examples of the present invention, as shown in fig. 1 to 3, the planetary gear mechanism 3 may further include a second housing 35, and the ring gear 34 may be integrated on an inner wall of the second housing 35, and the second housing 35 is fixedly connected to the hub 30. It should be noted that the second housing 35 may be connected to the hub 30 by the hub bolts 301, and the end cover 6 may be connected to the second housing 35 by bolts, so that the second housing 35 and the hub 30 can be stably assembled together, the second housing 35 can be prevented from being separated from the hub 30, and the operational reliability of the wheel-rim driving system 10 can be ensured.
Further, the second housing 35 and the ring gear 34 of the planetary gear mechanism 3 may be integrated into a whole, a circle of internal teeth may be formed on the inner wall of the second housing 35, the circle of internal teeth may constitute the ring gear 34 of the planetary gear mechanism 3, and the ring gear 34 and the planet gear 32 are engaged with each other, so that the process of separately providing the ring gear 34 may be omitted, the number of parts constituting the planetary gear mechanism 3 may be reduced, and the structure of the wheel-side driving system 10 may be further simplified. In addition, the problem that power is interrupted due to unstable connection caused by the mode that the gear ring is connected with the second shell 35 through bolts can be effectively solved by adopting the mode that the internal teeth are integrated on the second shell 35, the risk that the planetary gear mechanism 3 is damaged is reduced, the reliability of the wheel-side driving system 10 is improved, and the service life is prolonged. From whole angle, the mode integrated level that ring gear 34 is integrated in second casing 35 is high, can also effectually reduce spare part occupation space, improves space utilization, makes the spare part overall arrangement in second casing 35 more nimble. Finally, the gear ring 34 is integrated with the second shell 35, so that the production and assembly efficiency can be effectively improved, and the labor cost can be reduced.
In some examples of the present invention, as shown in fig. 4 and 5, a circle of internal teeth may be formed on an inner wall of the second housing 35, and the internal teeth may form the ring gear 34, so that the second housing 35 and the ring gear 34 can be integrated, the structure of the planetary gear mechanism 3 can be simpler, and since the carrier 33 is fixed, power is directly output to the hub 30 through the second housing 35, so that the transmission efficiency can be higher, and at the same time, the overall structure of the second housing 35 and the ring gear 34 can be more compact, the volume of the planetary gear mechanism 3 can be reduced, the process of separately providing the ring gear 34 can be omitted, the number of parts constituting the planetary gear mechanism 3 can be reduced, so that the structure of the planetary gear mechanism 3 can be simpler, and the structure of the wheel-side driving system 10 can be simplified.
In some examples of the present invention, as shown in fig. 4 and 5, the second housing 35 may include: the sleeve portion 351 and the mounting portion 352 are arranged, the sleeve portion 351 is connected with the mounting portion 352, the sleeve portion 351 is arranged on the outer side of the hub 30 in a sleeved mode, and the mounting portion 352 is fixedly connected with the hub 30 through a plurality of fasteners. It should be noted that the fastening member may be a bolt, the mounting portion 352 may also be provided with a plurality of mounting holes 353, and the fastening member may pass through the mounting holes 353 on the mounting portion 352, so that the mounting portion 352 and the hub 30 may be firmly assembled together.
In some examples of the present invention, as shown in fig. 1 and 2, the speed reducer 2 may further include an input shaft 25, the wheel-side motor 1 is connected to the input gear 21 through the input shaft 25, power is input through the input shaft 25, the input gear 21 and the input shaft 25 may be rigidly connected, and the input gear 21 may rotate with the input shaft 25 at the same speed.
In some examples of the present invention, the output power of the wheel-side motor 1 may output power to the hub 30 of the wheel 20 after passing through the input shaft 25, the input gear 21, the output gear 22, the output shaft 23, the sun gear 31, the planet gear 32, the ring gear 34, and the second housing 35 in sequence. The dynamic property of the whole vehicle can be met through two-stage speed reduction and torque increase of the speed reducer 2 and the planetary gear mechanism 3.
In some examples of the invention, as shown in fig. 1 and 2, the wheel-side drive system 10 may further include: the brake 4, the brake 4 may include: a brake disc 43, a brake caliper 42, a brake chamber 41 and a brake disc fixing bolt 44, wherein the brake disc 43 is fixed to the hub 30, the brake disc 43 can be connected to the hub 30 by the brake disc fixing bolt 44, the brake chamber 41 is connected to the brake caliper 42, and the speed reducer 2 can include: the first housing 24 and the brake caliper 42 are fixed to the first housing 24.
Also, the planetary gear mechanism 3 outputs a large reduction ratio: z35/Z31，Z35Number of teeth of hub 30, Z31The number of teeth of the sun gear 31 is the same, so that the dynamic property of the whole vehicle can be satisfied.
According to the vehicle provided by the embodiment of the invention, the wheel driving system 10 comprises the wheel driving system 10 provided by the embodiment, and the wheel driving system 10 is arranged and installed on the vehicle, so that the structure of the wheel driving system 10 can be more compact, the width of a vehicle channel can be widened, the structure of the wheel driving system 10 can be simpler, and the transmission efficiency of the wheel driving system 10 can be improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An edge wheel drive system, comprising:
a wheel-side motor;
a reducer, the reducer comprising: the input gear and the output gear are meshed with each other in the vertical direction, and the input gear is connected with the wheel-side motor;
a planetary gear mechanism, the planetary gear mechanism comprising: the planetary gear is arranged on the planet carrier, the planetary gear is meshed between the sun gear and the gear ring, the sun gear is connected with the output gear, the planet carrier is fixed, and the gear ring is connected with a hub of a wheel and transmits power to the hub.
2. The wheel-side drive system according to claim 1, wherein the speed reducer further includes an output shaft to which the output gear is fixed, the output shaft being integrated with the sun gear.
3. The wheel-side drive system according to claim 1, wherein the speed reducer includes: the first shell is fixedly connected with the planet carrier.
4. The wheel-side drive axle according to claim 3, wherein the carrier is fixed to the first housing by a fastener.
5. The wheel-side drive system according to claim 1, wherein the speed reducer includes: the wheel edge motor is provided with a motor base, and the motor base is connected with the first shell.
6. The wheel edge drive system of claim 1, wherein the planetary gear mechanism further comprises a second housing, the ring gear being integrated on an inner wall of the second housing, the second housing being fixedly connected to the hub.
7. The wheel-edge drive system according to claim 6, wherein a circle of internal teeth is formed on an inner wall of the second housing, the internal teeth forming the ring gear.
8. The wheel-side driving system according to claim 1, wherein the output power of the wheel-side motor passes through the input gear, the output gear, the sun gear, the planetary gear, the ring gear, and the second housing in sequence and then outputs the power to a hub of a wheel.
9. The wheel edge drive system according to claim 1, further comprising: a brake, the brake comprising: the brake disc is fixed with the hub, and the brake air chamber is connected with the brake calipers;
the speed reducer includes: a first housing, the brake caliper being fixed with the first housing.
10. A vehicle characterized by comprising the wheel-side drive system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713999.2A CN110654224B (en) | 2018-06-29 | 2018-06-29 | Wheel driving system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713999.2A CN110654224B (en) | 2018-06-29 | 2018-06-29 | Wheel driving system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110654224A true CN110654224A (en) | 2020-01-07 |
| CN110654224B CN110654224B (en) | 2022-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713999.2A Active CN110654224B (en) | 2018-06-29 | 2018-06-29 | Wheel driving system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110654224B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483905A (en) * | 2022-02-21 | 2022-05-13 | 浙江万向精工有限公司 | Novel wheel edge integrated system |
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| CN103442918A (en) * | 2011-03-09 | 2013-12-11 | 沃尔沃拉斯特瓦格纳公司 | Wheel hub motor arrangement |
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| Publication number | Publication date |
|---|---|
| CN110654224B (en) | 2022-03-18 |
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