CN217056187U - Two separation and reunion two keep off reduction gears - Google Patents
Two separation and reunion two keep off reduction gears Download PDFInfo
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- CN217056187U CN217056187U CN202220461404.0U CN202220461404U CN217056187U CN 217056187 U CN217056187 U CN 217056187U CN 202220461404 U CN202220461404 U CN 202220461404U CN 217056187 U CN217056187 U CN 217056187U
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Abstract
The utility model belongs to pure electric vehicles electric drive field discloses a two separation and reunion two keep off reduction gears, and mainly used solves current two and keeps off the problem that the reduction gear has the impact of shifting. The utility model discloses fix sun gear or planet carrier or outer ring gear in the planetary gear mechanism on the casing, two other unfixed components in rethread first clutch and second clutch hookup driving motor's the output shaft and the planetary gear mechanism, when shifting, two clutches can joint in turn in order to realize different transmission lines, the clutch all is flexible joint during this period, shift the impact can not appear, can make the reduction gear more smooth-going at whole shift in-process, avoid appearing the condition of power interruption, guarantee its operational reliability, and improve driver's subjective impression, increase driver and crew's comfort level.
Description
Technical Field
The utility model belongs to pure electric vehicles electric drive field, more specifically says, involves a two separation and reunion two and keep off reduction gears.
Background
The traditional pure electric automobile's actuating system mainly comprises a single gear reduction gear of a fixed gear ratio of drive driving motor collocation, single gear reduction gear is used for slowing down and increasing the torsion, it prevails at simple structure, the technology is mature and low in production cost, nevertheless because its velocity ratio is single, when the car is gone at a high speed, need drive driving motor to provide the super high rotational speed just can satisfy the performance requirement of car, and because drive motor is the constant power output above the critical speed, the rotational speed too big will lead to output torque to hang down excessively, influence motorist's subjective impression, and drive motor is long-term in the high rotational speed work energy consumption higher, the life-span is lower, the economic nature of vehicle can not be ensured.
At present, the fine solution of two fender reduction gears of application the problem that traditional pure electric vehicles appeared, and common pure electric vehicles two keep off reduction gears be single row planetary gear formula structure, mainly contain sun gear, planet wheel, planet carrier and outer ring gear, wherein: the central shaft of the planet gear is fixed on the planet carrier and can rotate around the central shaft, and the planet gear is respectively meshed with the sun gear and the gear ring; the sun gear in the structure is used as an input end, the planet carrier is used as an output end, the planet carrier is fixedly connected with the sun gear or the outer gear ring through a clutch, and the gear ring is fixedly connected with the external shell through a brake. The power transmission method comprises the following steps: the brake is combined, and a low gear is realized when the clutch is separated; the brake is separated, and the clutch is combined to realize high-speed gear. However, when the pure electric vehicle two-gear speed reducer with the structure is in a high-speed gear, the gear ring is connected with the planet carrier or the sun gear into a whole through the clutch, and then the transmission is carried out through the motor, so that a larger transmission pressure can be generated, the abrasion speed of the internal gear of the planet gear mechanism can be increased, and the integral service life of the speed reducer can be reduced; meanwhile, when the gear shifting is carried out, due to the fact that the brake needs to be controlled to brake or loosen the gear ring rigidly to achieve different transmission routes of the planetary gear mechanism, gear shifting impact can occur in the process, even the situation of power interruption occurs, driving feeling of a driver is affected, and discomfort can be caused to passengers.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two separation and reunion two keep off reduction gears, it is more smooth-going at the in-process of shifting, can not appear shifting the impact.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two separation and reunion two keep off reduction gears, includes driving motor, first clutch, second clutch, planetary gear mechanism includes sun gear, planet carrier, outer ring gear, and one of them and casing link firmly of sun gear, planet carrier, outer ring gear, and two other components are respectively through first clutch, second clutch and driving motor's output shaft hookup.
Furthermore, the sun gear is fixedly connected with the shell, the first clutch is connected with an output shaft of the driving motor and the outer gear ring, the second clutch is connected with an output shaft of the driving motor and the planet carrier, and the planet carrier is an output end of the planetary gear mechanism.
Furthermore, the outer gear ring is fixedly connected with the shell, the first clutch is connected with an output shaft of the driving motor and the sun gear, the second clutch is connected with an output shaft of the driving motor and the planet carrier, and the planet carrier is an output end of the planetary gear mechanism.
Furthermore, the planet carrier is fixedly connected with the shell, the first clutch is connected with an output shaft of the driving motor and the sun gear, the second clutch is connected with an output shaft of the driving motor and the outer gear ring, and the outer gear ring is the output end of the planetary gear mechanism.
Furthermore, the device also comprises a wheel shaft, and the wheel shaft is in transmission connection with the output end of the planetary gear mechanism.
Furthermore, a differential is arranged on the wheel shaft.
Furthermore, the device also comprises a speed reducing mechanism, and the speed reducing mechanism is arranged at the output end of the driving motor or the planetary gear mechanism.
Further, the speed reducing mechanism is a first-stage speed reducing mechanism or a second-stage speed reducing mechanism, and the speed reducing mechanism is determined according to actual speed reducing requirements.
Furthermore, the first clutch and the second clutch are multi-friction plate wet clutches.
Compared with the prior art, the utility model discloses following beneficial effect has:
one, the utility model discloses fix sun gear or planet carrier or outer ring gear in the planetary gear mechanism on the casing, two other unfixed components in rethread first clutch and second clutch hookup driving motor's the output shaft and the planetary gear mechanism, when shifting, two clutches can joint in turn in order to realize different transmission routes, the clutch all is the flexonics during this period, shift the impact can not appear, can make the reduction gear more smooth-going at whole shift in-process, avoid the condition of power interruption to appear, guarantee its operational reliability, and improve driver's subjective impression, increase driver and crew's comfort level.
When the first clutch is closed and the second clutch is opened, the power of the driving motor is transmitted to the planet carrier through the outer gear ring to be output, and the power is a low-speed gear, namely a first gear; when the first clutch is opened and the second clutch is closed, the power of the driving motor is directly output from the planet carrier, which is a high-speed gear, namely a second gear.
When the first clutch is closed and the second clutch is opened, the power of the driving motor is transmitted to the planet carrier through the sun gear to be output, and the power is a low-speed gear, namely a first gear; when the first clutch is opened and the second clutch is closed, the power of the driving motor is directly output from the planet carrier, which is a high-speed gear, namely a second gear.
The planet carrier is fixedly connected with the shell, the first clutch is connected with an output shaft of the driving motor and the sun gear, the second clutch is connected with an output shaft of the driving motor and the outer gear ring, the outer gear ring is an output end of the planetary gear mechanism, when the first clutch is closed and the second clutch is opened, the power of the driving motor is transmitted to the outer gear ring through the sun gear to be output, and the output is a low-speed gear, namely a first gear; when the first clutch is opened and the second clutch is closed, the power of the driving motor is directly output from the outer gear ring, and the power is a high-speed gear, namely two gears.
And the driving motor is driven by the planetary gear mechanism to transmit power to the wheel shaft, and then the power is transmitted to wheels at two ends of the wheel shaft through the differential mechanism to realize the forward movement of the vehicle.
And the speed reducing mechanism is arranged at the output end of the driving motor or the planetary gear mechanism and plays a role of further reducing speed, so that the whole speed reducer has a larger reduction ratio, and the transmission torque is increased.
And the first clutch and the second clutch are multi-friction-plate wet clutches, multiple groups of friction plates are more stable when being engaged, the transmission torque is larger, the driving experience of a vehicle driver can be improved, meanwhile, the clutch function loss caused by abrasion failure of the single group of friction plates in long-term engagement work can be avoided, and the overall wind risk resistance of the clutch can be improved.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
The clutch comprises a driving motor 1, a first clutch 2, a second clutch 3 and a sun gear 4. 5-planet carrier, 6-external gear ring, 7-wheel shaft and 8-differential.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The dual-clutch two-gear speed reducer shown in fig. 1 to 3 comprises a driving motor 1, a first clutch 2, a second clutch 3 and a planetary gear mechanism, wherein the planetary gear mechanism comprises a sun gear 4, a planet carrier 5 and an outer gear ring 6, one of the sun gear 4, the planet carrier 5 and the outer gear ring 6 is fixedly connected with a shell, and the other two elements are respectively connected with an output shaft of the driving motor 1 through the first clutch 2 and the second clutch 3.
The utility model discloses it is together fixed with the casing with sun gear 4 or planet carrier 5 or outer ring gear 6 among the planetary gear mechanism, two other unfixed components in rethread first clutch 2 and the output shaft of second clutch 3 hookup driving motor 1 and the planetary gear mechanism, when shifting, two clutches can joint in turn in order to realize different transmission lines, the clutch all is the flexonics during this period, shift the impact can not appear, can make the reduction gear more smooth-going at whole shift process, avoid appearing the condition of power interruption, guarantee its operational reliability, and improve driver's subjective impression, increase driver and crew's comfort level.
The driving device further comprises a wheel shaft 7, the wheel shaft 7 is in transmission connection with the output end of the planetary gear mechanism, a differential mechanism 8 is further arranged on the wheel shaft 7, the power of the driving motor 1 is transmitted to the wheel shaft through the planetary gear mechanism and then transmitted to wheels at two ends of the wheel shaft 7 through the differential mechanism 8 to achieve advancing of a vehicle, and the driving device is simple and compact in overall structure and reasonable in structural layout.
The speed reducer is characterized by further comprising a speed reducing mechanism, wherein the speed reducing mechanism is arranged at the output end of the driving motor 1 or the planetary gear mechanism, the speed reducing mechanism selects a primary speed reducing mechanism or a secondary speed reducing mechanism according to the actual speed reducing requirement, and the speed reducing mechanism plays a role in further reducing speed, so that the whole speed reducer has a larger speed reducing ratio, and the transmission torque is increased.
The first clutch 2 and the second clutch 3 are multi-friction-plate wet clutches, a plurality of groups of friction plates are more stable when being engaged, the transmission torque is larger, the driving experience of a vehicle driver can be improved, meanwhile, the clutch function loss caused by abrasion failure of a single group of friction plates in long-term engagement work can be avoided, and the overall wind risk resistance of the clutch can be improved.
Example 1
As shown in fig. 1, the sun gear 4 is fixed on the outer casing, the first clutch 2 connects the output shaft of the driving motor 1 with the outer gear ring 6, the second clutch 3 connects the output shaft of the driving motor 1 with the planet carrier 5, the planet carrier 5 is the output end of the planetary gear mechanism, when the first clutch 2 is closed and the second clutch 3 is opened, the power of the driving motor 1 is transmitted to the planet carrier 5 through the outer gear ring 6 for output, which is a low gear, i.e. a first gear; when the first clutch 2 is opened and the second clutch 3 is closed, the power of the driving motor 1 is directly output from the carrier 5, which is a high-speed gear, i.e., a second gear.
Example 2
As shown in fig. 2, the external gear ring 6 is fixed on the external housing, the first clutch 2 connects the output shaft of the driving motor 1 with the sun gear 4, the second clutch 3 connects the output shaft of the driving motor 1 with the planet carrier 5, the planet carrier 5 is the output end of the planetary gear mechanism, when the first clutch 2 is closed and the second clutch 3 is opened, the power of the driving motor 1 is transmitted to the planet carrier 5 through the sun gear 4 to be output, which is a low gear, i.e. a first gear; when the first clutch 2 is opened and the second clutch 3 is closed, the power of the driving motor 1 is directly output from the carrier 5, which is a high gear, i.e., a second gear.
Example 3
As shown in fig. 3, the planet carrier 5 is fixed on the outer casing, the first clutch 2 connects the output shaft of the driving motor 1 with the sun gear 4, the second clutch 3 connects the output shaft of the driving motor 1 with the outer gear ring 6, the outer gear ring 6 is the output end of the planetary gear mechanism, when the first clutch 2 is closed and the second clutch 3 is opened, the power of the driving motor 1 is transmitted to the outer gear ring 6 through the sun gear 4 for output, which is a low gear, i.e. a first gear; when the first clutch 2 is opened and the second clutch 3 is closed, the power of the drive motor 1 is directly output from the external gear ring 6, which is a high-speed gear, i.e., a second gear.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.
Claims (9)
1. The utility model provides a two separation and reunion two keep off reduction gears, includes driving motor (1), first clutch (2), second clutch (3), planetary gear mechanism, its characterized in that, planetary gear mechanism includes sun gear (4), planet carrier (5), outer ring gear (6), and sun gear (4), planet carrier (5), outer ring gear (6) one of them is fixed, and two other components are respectively through the output shaft hookup of first clutch (2), second clutch (3) with driving motor (1).
2. A double-clutch two-gear reducer according to claim 1, characterised in that the sun gear (4) is fixed, the first clutch (2) connects the output shaft of the drive motor (1) with the external gear ring (6), the second clutch (3) connects the output shaft of the drive motor (1) with the planet carrier (5), and the planet carrier (5) is the output of the planetary gear mechanism.
3. A double-clutch two-gear reducer according to claim 1, characterised in that the external gear ring (6) is fixed, the first clutch (2) connects the output shaft of the drive motor (1) with the sun gear (4), the second clutch (3) connects the output shaft of the drive motor (1) with the planet carrier (5), and the planet carrier (5) is the output of the planetary gear mechanism.
4. A double-clutch two-gear reducer according to claim 1, characterised in that the planet carrier (5) is fixed, the first clutch (2) connects the output shaft of the drive motor (1) with the sun gear (4), the second clutch (3) connects the output shaft of the drive motor (1) with the outer ring gear (6), and the outer ring gear (6) is the output of the planetary gear mechanism.
5. Double-clutch two-speed reducer according to any of claims 2, 3 or 4, further comprising a wheel shaft (7), the wheel shaft (7) being in driving connection with the output of the planetary gear mechanism.
6. Double-clutch two-gear reducer according to claim 5, characterised in that a differential (8) is also provided on the wheel shaft (7).
7. Double clutch two speed reducer according to claim 5, characterized by further comprising a reduction mechanism, which is provided at the output of the drive motor (1) or the planetary gear mechanism.
8. The dual-clutch two-speed reducer according to claim 7, wherein the speed reduction mechanism is a primary speed reduction mechanism or a secondary speed reduction mechanism.
9. A double-clutch two-speed reducer according to any of claims 2, 3 or 4, in which the first clutch (2) and the second clutch (3) are multi-plate wet clutches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220461404.0U CN217056187U (en) | 2022-03-04 | 2022-03-04 | Two separation and reunion two keep off reduction gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220461404.0U CN217056187U (en) | 2022-03-04 | 2022-03-04 | Two separation and reunion two keep off reduction gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217056187U true CN217056187U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220461404.0U Active CN217056187U (en) | 2022-03-04 | 2022-03-04 | Two separation and reunion two keep off reduction gears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217056187U (en) |
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2022
- 2022-03-04 CN CN202220461404.0U patent/CN217056187U/en active Active
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