CN209852073U - Wheel driving system and vehicle using same - Google Patents
Wheel driving system and vehicle using same Download PDFInfo
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- CN209852073U CN209852073U CN201920070442.1U CN201920070442U CN209852073U CN 209852073 U CN209852073 U CN 209852073U CN 201920070442 U CN201920070442 U CN 201920070442U CN 209852073 U CN209852073 U CN 209852073U
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- speed reducing
- reducing mechanism
- driving motor
- supporting arm
- fixed
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Abstract
The utility model relates to a wheel limit actuating system and use this wheel limit actuating system's vehicle, wheel limit actuating system includes driving motor, reduction gears and support arm, one of driving motor and reduction gears fixes the inboard at the support arm, another fixes the outside at the support arm, be provided with the motor fixed knot who is used for fixed driving motor on the support arm respectively constructs with the reduction gears fixed knot who is used for fixed reduction gears constructs, fix driving motor and reduction gears respectively in the both sides of support arm through motor fixed knot structure and reduction gears fixed knot structure, thus, the inside and outside both sides atress of support arm is more even, the problem that driving motor and reduction gear install in the same one side of support arm and lead to the support arm atress unbalance among the prior art has been solved yet, driving motor and reduction gear install in the prior art and lead to the vehicle to appear vibration fatigue easily with one side of support arm, The reliability is not high.
Description
Technical Field
The utility model relates to a wheel limit actuating system and use this wheel limit actuating system's vehicle.
Background
With the increasing shortage of global energy and the continuous deterioration of the environment, in order to save energy and reduce the exhaust emission of vehicles, many countries around the world are in vigorous research and development and popularization of electric vehicles at present, and the electric vehicles can save energy, reduce emission, improve the riding comfort of people and solve the problem of energy shortage.
The traditional passenger car adopting the fuel power mode adopts a central direct-drive mode, namely, the power of an engine is transmitted to an axle through a transmission and a transmission shaft and then transmitted to a tire through an axle speed reducer, a differential and a half shaft. For the traditional electric motor coach, the engine is only changed into the motor, and the transmission form of the power is not changed. In order to design a passenger car from the aspect of electromotion, the transmission form of the power needs to be optimized, and the problems are generally solved by two methods at present: the first is to adopt the wheel hub motor to drive, namely arrange the motor in the wheel directly, the advantage is that the space utilization is high, but the motor volume can't be large, waterproof, heat-dissipating have problems safely, the power of the wheel hub motor is difficult to support the load of the full member of passenger train at the same time; the second is that the motors are arranged at two ends of the bridge and fixed on the bridge, some of the motors are directly driven coaxially with the wheels, and some of the motors are indirectly driven through a speed reducer or a wheel-side speed reducer.
For example, chinese patent application publication No. CN106364309A discloses a double trailing arm steering independent suspension for a wheel-side motor driven electric bus. The driving motor is arranged at the wheel position of the passenger car, the driving motor is positioned at one side where an output shaft of the speed reducer is positioned, the speed reducer is fixed on the supporting arm, and the output shaft of the speed reducer penetrates through a central hole of the supporting arm and is connected with a wheel edge structure of the passenger car. In this independent suspension, the reduction gear is fixed on the medial surface of support arm, and the terminal surface of driving motor output is installed on the side of reduction gear, and driving motor and reduction gear are fixed together in the same one side of support arm promptly, and the stress that this kind of cantilever beam form set up the mode, can cause the support arm is unbalanced, and the vehicle very easily appears vibrating fatigue, the not high problem of reliability when going on the road surface of jolting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wheel driving system to solve the problem that the driving motor and the reducer are arranged at the same side of the supporting arm in the prior art, so that the stress of the supporting arm is unbalanced; the utility model aims at providing a vehicle still lies in providing a driving motor and reduction gear install in the same one side of support arm and lead to the vehicle to appear tired, the not high problem of reliability easily among the solution prior art.
In order to achieve the above object, the wheel driving system of the present invention adopts the following technical solutions:
a wheel driving system comprises a driving motor, a speed reducing mechanism and a supporting arm, wherein one of the driving motor and the speed reducing mechanism is fixed on the inner side of the supporting arm, the other one of the driving motor and the speed reducing mechanism is fixed on the outer side of the supporting arm, and a motor fixing structure for fixing the driving motor and a speed reducing mechanism fixing structure for fixing the speed reducing mechanism are respectively arranged on the supporting arm.
The wheel edge driving system has the advantages that: the driving motor and the speed reducing mechanism are respectively fixed on two sides of the supporting arm through the motor fixing structure and the speed reducing mechanism fixing structure, so that the stress on the inner side and the outer side of the supporting arm is more uniform, and the problem that the stress on the supporting arm is unbalanced because the driving motor and the speed reducer are arranged on the same side of the supporting arm in the prior art is solved.
Further, in order to facilitate direct transmission connection between the output shaft of the motor and the input end of the speed reducing mechanism, the support arm is further provided with a through hole through which the output shaft of the driving motor passes to be in transmission connection with the input end of the speed reducing mechanism, or through which the input end of the speed reducing mechanism passes to be in transmission connection with the output shaft of the driving motor, or through which the coupler passes to be in transmission connection with the input end of the speed reducing mechanism and the output end of the driving motor respectively.
Further, for convenience of processing, the motor fixing structure and the speed reducing mechanism fixing structure are both fixing holes.
Furthermore, in order to shorten the distance from the output end of the speed reducing mechanism to the hub and facilitate the rotation of the output end of the speed reducing mechanism driving the hub, the driving motor is fixed on the inner side of the supporting arm, and the speed reducing mechanism is fixed on the outer side of the supporting arm.
Further, in order to obtain larger transmission ratio and output torque, the speed reducing mechanism is a planetary gear speed reducing mechanism, and a planet carrier of the planetary gear speed reducing mechanism is fixed on the supporting arm.
In order to achieve the above object, the present invention provides a vehicle, which adopts the following technical solutions:
a vehicle comprises a frame and a wheel driving system connected with the frame, wherein the wheel driving system comprises a driving motor, a speed reducing mechanism and a supporting arm connected with the frame, one of the driving motor and the speed reducing mechanism is fixed on the inner side of the supporting arm, the other one of the driving motor and the speed reducing mechanism is fixed on the outer side of the supporting arm, and a motor fixing structure used for fixing the driving motor and a speed reducing mechanism fixing structure used for fixing the speed reducing mechanism are respectively arranged on the supporting arm.
The beneficial effect of the technical scheme of the vehicle is that: the driving motor and the speed reducing mechanism are respectively fixed on two sides of the supporting arm through the motor fixing structure and the speed reducing mechanism fixing structure, so that the stress on the inner side and the outer side of the supporting arm is more uniform, and the problems that the driving motor and the speed reducer are installed on the same side of the supporting arm in the prior art, vibration fatigue easily occurs to a vehicle, and the reliability is not high are solved.
Further, in order to facilitate direct transmission connection between the output shaft of the motor and the input end of the speed reducing mechanism, the support arm is further provided with a through hole through which the output shaft of the driving motor passes to be in transmission connection with the input end of the speed reducing mechanism, or through which the input end of the speed reducing mechanism passes to be in transmission connection with the output shaft of the driving motor, or through which the coupler passes to be in transmission connection with the input end of the speed reducing mechanism and the output end of the driving motor respectively.
Further, for convenience of processing, the motor fixing structure and the speed reducing mechanism fixing structure are both fixing holes.
Furthermore, in order to shorten the distance from the output end of the speed reducing mechanism to the hub and facilitate the rotation of the output end of the speed reducing mechanism driving the hub, the driving motor is fixed on the inner side of the supporting arm, and the speed reducing mechanism is fixed on the outer side of the supporting arm.
Further, in order to obtain larger transmission ratio and output torque, the speed reducing mechanism is a planetary gear speed reducing mechanism, and a planet carrier of the planetary gear speed reducing mechanism is fixed on the supporting arm.
Drawings
Fig. 1 is a schematic partial structural view of a vehicle according to an embodiment of the present invention;
description of reference numerals: the planetary gear train comprises an A-primary planetary gear train, a B-secondary planetary gear train, a 1-tire, a 2-wheel hub, a 3-primary inner gear ring, a 4-primary planetary gear, a 5-primary sun gear, a 6-primary planetary carrier, a 7-secondary inner gear ring, an 8-secondary planetary gear, a 9-secondary sun gear, a 10-secondary planetary carrier, a 11-transmission shaft, a 12-driving motor and a 13-supporting arm.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses the concrete embodiment of well vehicle:
as shown in fig. 1, the tire comprises a frame (not shown), a tire 1 and a wheel driving system, the wheel driving system comprises a driving motor 12, a speed reducing mechanism and a supporting arm 13, wherein the supporting arm 13 is fixedly connected with the frame, the supporting arm 13 is respectively provided with a speed reducing mechanism fixing structure and a motor fixing structure, the direction close to the inside of the vehicle is the inner side, the direction far away from the vehicle is the outer side, the speed reducing mechanism is fixed on the axial outer side of the supporting arm 13 through the speed reducing mechanism fixing structure, and the driving motor 12 is fixed on the axial inner side of the supporting arm 13 through the motor fixing structure. Specifically, the motor fixing structure is a fixing hole through which a bolt passes.
The speed reducing mechanism is a planetary gear speed reducing mechanism, in particular to a double-planet-row type speed reducing mechanism, namely the speed reducing mechanism comprises two stages of planetary gear trains, namely a first stage planetary gear train A and a second stage planetary gear train B which are arranged in parallel along the axial direction, and the second stage planetary gear train B is positioned on the inner side of the first stage planetary gear train A in the axial direction.
The primary planetary gear train A comprises a primary sun gear 5 in transmission connection with a power output shaft of a driving motor 12, a transmission shaft 11 is connected between the primary sun gear 5 and the power output shaft of the driving motor 12, and specifically, the power output shaft of the driving motor 12 penetrates through a supporting arm 13 and then is connected with the transmission shaft 11, so that a through hole for the power output shaft of the driving motor 12 to penetrate through is formed in the supporting arm 13. The driving motor 12 drives the primary sun gear 5 to rotate through the transmission shaft 11, and a primary planet gear 4, a primary planet carrier 6 and a primary inner gear ring 3 are arranged in a matching manner with the primary sun gear 5, wherein the primary inner gear ring 3 is fixed on the inner ring of the wheel hub 2. When the primary sun gear 5 rotates, the primary planet gear 4 rotates along with the primary sun gear 5, and the primary planet gear 4 rotates and revolves simultaneously, so the primary planet carrier 6 rotates, meanwhile, as the wheel hub 2 rotates when the vehicle runs, namely, the primary annular gear 3 rotates, for the primary planetary gear train a, the primary sun gear 5, the primary planet gear 4, the primary planet carrier 6 and the primary annular gear 3 all rotate, and none of the components is a braking element, so the primary planetary gear train a is equivalent to a neutral gear without power output according to the working principle of the planetary gear mechanism.
The second-stage planetary gear train B comprises a second-stage sun gear 9 in transmission connection with the first-stage planet carrier 6, and a transmission shaft 11 is connected with the first-stage sun gear 5 after passing through the second-stage sun gear 9, so that a through hole for the transmission shaft 11 to pass through is formed in the second-stage sun gear 9, namely, the transmission shaft 11 and the second-stage sun gear 9 are in relative rotation. The secondary planet gear 8, the secondary planet carrier 10 and the secondary inner gear ring 7 are matched with the secondary sun gear 9, wherein the secondary inner gear ring 7 is also fixed on the inner ring of the hub 2 and is used for driving the hub 2 to rotate, so that the primary inner gear ring 3 and the secondary inner gear ring 7 are directly welded and fixed on the hub 2.
The secondary planet carrier 10 is fixed to the outer side surface of the support arm 13, and at this time, the secondary planet carrier 10 serves as a connecting portion of the speed reducing mechanism connected to the support arm 13, and the secondary planet carrier 10 is connected to the support arm 13 through a speed reducing mechanism fixing structure, specifically, a fixing hole through which a bolt passes. Therefore, the secondary planet carrier 10 is fixed and does not rotate, and then for the secondary planetary gear train B, the secondary planet carrier 10 is a braking element, according to the working principle of the planetary gear mechanism, when the secondary sun gear 9 rotates along with the primary planet carrier 6, the secondary sun gear 9 is a power input element, and the secondary planet gears 8 only do autorotation motion, and at the moment, the secondary ring gear 7 is a power output element, and the secondary ring gear 7 drives the hub 2 to rotate. Because the first-stage inner gear ring 3 and the second-stage inner gear ring 7 are both arranged in the hub 2, the space in the hub 2 is fully utilized, the space outside the hub 2 is saved, the two-stage planetary gear train can output larger transmission ratio and output torque, the problem of insufficient installation space caused by overlarge structure due to the fact that the transmission ratio and the output torque are improved is solved, the arrangement and installation of a wheel-side driving system are facilitated, and the manufacturing and the assembly of a vehicle are further facilitated.
The utility model discloses in, second grade planet carrier 10 is connected to the axial lateral surface of support arm 13, driving motor 12 is connected to the axial medial surface, the structure is very compact, made things convenient for the installation of second grade planet carrier 10 and driving motor 12 to fixed, and, because reduction gears and driving motor 12 set up the both sides at support arm 13, like this, the inside and outside both sides atress of support arm 13 is more even, solved driving motor 12 and reduction gear and installed at support arm 13 with one side and lead to the vehicle vibration fatigue to appear easily, the not high problem of reliability.
The working principle of the wheel edge driving system is as follows: when the vehicle runs, a power output shaft of a driving motor 12 drives a primary sun gear 5 to rotate through a transmission shaft 11, a primary planet gear 4 rotates along with the primary planet gear 4, and the primary planet gear 4 rotates in an autorotation and revolution simultaneously, so that a primary planet carrier 6 rotates along with the primary planet carrier, and a primary inner gear ring 3 also rotates due to the rotation of a hub 2, a brake element is not arranged in a primary planet gear train A, the primary planet gear train A is a neutral gear mechanism without power output, and the primary planet carrier is used for bearing a primary speed reduction function, driving a secondary sun gear 9 to rotate through the rotation of the primary planet carrier 6, further driving a secondary planet gear 8 and a secondary inner gear ring 7 to. In fact, the hub 2, the primary inner gear ring 3, the primary planet gear 4, the primary planet carrier 6, the secondary sun gear 9, the secondary planet gear 8 and the secondary inner gear ring 7 form a closed loop, the secondary inner gear ring 7 enables the rotating speed output by the hub 2 to be fed back to the primary inner gear ring 3, and then the rotating speed is fed back to the secondary planetary gear train B through the primary planet gear 4 and the primary planet carrier 6, so that a dynamic self-adjusting process is realized.
In this embodiment, the support arm is provided with a through hole for the power output shaft of the driving motor to pass through, the power output shaft of the driving motor is connected with the transmission shaft after passing through the through hole, in other embodiments, the transmission shaft is not provided, and the power output shaft of the driving motor is directly connected with the primary sun gear in a transmission manner after passing through the through hole; in addition, in other embodiments, a transmission shaft is fixed on the primary sun gear and serves as an input end of the speed reducing mechanism, and the transmission shaft can penetrate through the supporting arm to be in transmission connection with a power output shaft of the driving motor; in addition, in other embodiments, the coupling may pass through the through hole of the support arm and then be in transmission connection with the primary sun gear and the power output shaft of the driving motor, respectively. Of course, in other embodiments, the support arm may not have a through hole, and the driving connection portion of the driving motor and the speed reducing mechanism may be located outside the support arm.
In this embodiment, the motor fixing structure and the reduction mechanism fixing structure are both fixing holes. In other embodiments, the motor fixing structure and the speed reducing mechanism fixing structure may both be connection flanges, and specifically, the driving motor and the speed reducing mechanism are provided with corresponding connection flanges; the motor and the speed reducing mechanism can also be welded and fixed on the supporting arm, and at the moment, the driving motor fixing structure and the speed reducing mechanism fixing structure are arm surfaces of the supporting arm or fixing plates which are fixed on the supporting arm and used for welding and fixing the driving motor and the speed reducing mechanism.
In this embodiment, the driving motor is fixed on the axial inner side of the supporting arm, and the speed reducing mechanism is fixed on the axial outer side of the supporting arm.
In the present embodiment, the speed reduction mechanism is a planetary gear speed reduction mechanism, and the carrier of the planetary gear speed reduction mechanism is fixed to the support arm. In other embodiments, the reduction mechanism may be of another type, for example, a helical gear reduction mechanism, a cylindrical gear reduction mechanism, in which case the housing of the gear reduction mechanism is fixed to the support arm.
The utility model discloses well wheel limit actuating system's concrete embodiment:
the structure of the wheel-side drive system is the same as that of the wheel-side drive system of the vehicle in the above-described embodiment, and the description thereof is omitted.
Claims (10)
1. The utility model provides a wheel limit actuating system, includes driving motor, reduction gears and support arm, its characterized in that: one of the driving motor and the speed reducing mechanism is fixed on the inner side of the supporting arm, the other one is fixed on the outer side of the supporting arm, and a motor fixing structure for fixing the driving motor and a speed reducing mechanism fixing structure for fixing the speed reducing mechanism are respectively arranged on the supporting arm.
2. The wheel-side drive system according to claim 1, wherein: the supporting arm is further provided with a through hole for the output shaft of the driving motor to penetrate through so as to be in transmission connection with the input end of the speed reducing mechanism, or for the input end of the speed reducing mechanism to penetrate through so as to be in transmission connection with the output shaft of the driving motor, or for the coupler to penetrate through so as to be in transmission connection with the input end of the speed reducing mechanism and the output end of the driving motor respectively.
3. The wheel-side drive system according to claim 1 or 2, characterized in that: and the motor fixing structure and the speed reducing mechanism fixing structure are both fixing holes.
4. The wheel-side drive system according to claim 1 or 2, characterized in that: the driving motor is fixed on the inner side of the supporting arm, and the speed reducing mechanism is fixed on the outer side of the supporting arm.
5. The wheel-side drive system according to claim 1 or 2, characterized in that: the speed reducing mechanism is a planetary gear speed reducing mechanism, and a planet carrier of the planetary gear speed reducing mechanism is fixed on the supporting arm.
6. The utility model provides a vehicle, includes the frame and the wheel driving system who links to each other with the frame, wheel driving system includes driving motor, reduction gears and the support arm that links to each other with the frame, its characterized in that: one of the driving motor and the speed reducing mechanism is fixed on the inner side of the supporting arm, the other one is fixed on the outer side of the supporting arm, and a motor fixing structure for fixing the driving motor and a speed reducing mechanism fixing structure for fixing the speed reducing mechanism are respectively arranged on the supporting arm.
7. The vehicle according to claim 6, characterized in that: the supporting arm is further provided with a through hole for the output shaft of the driving motor to penetrate through so as to be in transmission connection with the input end of the speed reducing mechanism, or for the input end of the speed reducing mechanism to penetrate through so as to be in transmission connection with the output shaft of the driving motor, or for the coupler to penetrate through so as to be in transmission connection with the input end of the speed reducing mechanism and the output end of the driving motor respectively.
8. The vehicle according to claim 6 or 7, characterized in that: and the motor fixing structure and the speed reducing mechanism fixing structure are both fixing holes.
9. The vehicle according to claim 6 or 7, characterized in that: the driving motor is fixed on the inner side of the supporting arm, and the speed reducing mechanism is fixed on the outer side of the supporting arm.
10. The vehicle according to claim 6 or 7, characterized in that: the speed reducing mechanism is a planetary gear speed reducing mechanism, and a planet carrier of the planetary gear speed reducing mechanism is fixed on the supporting arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070442.1U CN209852073U (en) | 2019-01-16 | 2019-01-16 | Wheel driving system and vehicle using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070442.1U CN209852073U (en) | 2019-01-16 | 2019-01-16 | Wheel driving system and vehicle using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209852073U true CN209852073U (en) | 2019-12-27 |
Family
ID=68930324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920070442.1U Active CN209852073U (en) | 2019-01-16 | 2019-01-16 | Wheel driving system and vehicle using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209852073U (en) |
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2019
- 2019-01-16 CN CN201920070442.1U patent/CN209852073U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |