CN2687425Y - Gear reduction unit - Google Patents
Gear reduction unit Download PDFInfo
- Publication number
- CN2687425Y CN2687425Y CN 200420015577 CN200420015577U CN2687425Y CN 2687425 Y CN2687425 Y CN 2687425Y CN 200420015577 CN200420015577 CN 200420015577 CN 200420015577 U CN200420015577 U CN 200420015577U CN 2687425 Y CN2687425 Y CN 2687425Y
- Authority
- CN
- China
- Prior art keywords
- wheel
- output shaft
- planet carrier
- planet
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Retarders (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The utility model provides a gear reduction mechanism, comprising an input shaft, a planet carrier, a planet wheel, a wheel rim, a brake, a wheel hub, and an output shaft. Wherein, the input shaft is connected with the output shaft of the electric motor, and a gear ring is fixed onto the electric motor casing. One end of the output shaft is connected with the planet carrier through drum-shaped teeth, and the other end of the output shaft is connected with the wheel hub, and a full floating structure is adopted. The transmission shaft of the speed reduction mechanism of the utility model only bears the torque moment without bearing the bending moment; the reliability and the life length of the speed reducer can be improved; the speed reducer and the power shaft are made to simultaneously turn as the wheel, and the gear reduction mechanism can be used for the four-wheel turning driving.
Description
[technical field]
The utility model relates to a kind of reduction gears mechanism, especially a kind of reduction gears mechanism that includes planetary gear train that is used for wheel hub electric motor of electric vehicle.
[background technique]
In recent years, along with The development in society and economy, people's environmental consciousness is progressively strengthened, and electric motor car pollution-free, that do not consume fossil energy has obtained people's common concern, and begins to enter practical stage.In the wheel hub driving arrangement of electric motor car, reducing gear is indispensable device.Its input end links to each other with drive motor, and output terminal links to each other with drive hub, to reduce the rotating speed of drive motor, improves the torque and the driving force of its output.At this reducing gear that is used for wheel hub electric motor of electric vehicle, reduction gears mechanism, the reduction gears mechanism that especially includes planetary gear train is to use the most general equipment.
For example, Chinese patent 02258632 has disclosed a kind of retarder of translator, and this retarder is exactly the reduction gears mechanism that includes planetary gear train.It includes wheel hub, motor, planet carrier, is installed in planet wheel, sun gear and gear ring on the planet carrier.Pass through clutch coupling between gear ring and the wheel hub, and adopted the structure of two-stage asteroid wheel.Its structure is comparatively complicated, bear that moment is little, working life short, can only be used for the electric bicycle field.
Chinese patent CN2507693Y has disclosed the another kind of reduction gears mechanism that includes planetary gear train.It is a kind of with semiaxis as input shaft, output torque to tire by planet carrier, the fixed planetary reducer of gear ring.Dress drum brake in the tire.This retarder can only be used for the axle reduction of automobile, can not be used for the ransaxle that front wheel driving and band turn to, and influences overall width and outward appearance, is subjected to size restrictions that disk type braker can not be installed, and has limited the Applicable scope of break.And, therefore influenced the life-span of retarder and hub bearing because its semiaxis will bear the vertical force, longitudinal force, lateral force of wheel transmission and the moment of flexure that they cause.
[model utility content]
The purpose of this utility model provides and a kind ofly can be used for four-wheel steering and drive, and reliable operation, long reduction gears mechanism of life-span.
For achieving the above object, the utility model provides a kind of reduction gears mechanism, comprises input shaft, planet carrier, planet wheel, wheel rim, break, wheel hub and output shaft, and wherein input shaft links to each other with the output shaft of motor, and gear ring is fixed on the motor housing.Output shaft one end links to each other with planet carrier by crowned teeth, and the other end and wheel hub connect, and output shaft adopts the wholly floating structure.
As further improvement, planet carrier is in radially delocalization.
The quantity of preferred planet wheel is three, is fixed on the planet carrier equably by planet axis.
The utility model reduction gears mechanism links to each other with planet carrier by crowned teeth owing to its output shaft, and the other end of output shaft and wheel hub connect, output shaft adopts the wholly floating structure, thereby make the transmission shaft of the utility model reducing gear only bear torque, do not bear moment of flexure, improved the reliability and the life-span of retarder, and retarder and line shaft can be turned to simultaneously with wheel, can be used for four-wheel steering and drive.
Planet carrier is in radially delocalization, can realize floating of planet carrier, and and then realize that all carrying of retarder is unsteady, make the retarder running steadily, reduced the gear transmission noise.
It is big to the utlity model has velocity ratio, compact structure, and the characteristics that cost is low can realize that the four-wheel steering of automobile drives when the wheel motor that is used for electric vehicle drives.
[description of drawings]
In conjunction with example the utility model is described in further detail with reference to the accompanying drawings:
Fig. 1 is a kind of embodiment's of a kind of reduction gears mechanism of the utility model a structural representation.
[embodiment]
A kind of embodiment of the present utility model comprises input shaft 1, planet carrier 2, planet wheel 3, gear ring 4, brake shoe 5, wheel rim 6, break 7, wheel hub 8 and the output shaft 10 of being with central gear as shown in Figure 1.Gear ring 4 is by being bolted on the motor housing, and three equally distributed planet wheels 3 are fixed on the planet carrier by planet axis.Gear ring 4 is by being bolted on the motor housing, and forming one is driving link with input shaft 1, and planet carrier 2 is a driven member, the planetary reducer that gear ring 4 is fixed.One end of output shaft 10 links to each other with planet carrier 2 by crowned teeth, and the other end and wheel hub 8 connect.Output shaft 10 adopts the wholly floating structure, does not have fixing radial support, and sky is enclosed within on the planet carrier 2.The moment of flexure that produces in the wheel movement passes to motor casing through hub bearing 9, retarder shell, and output shaft only bears the torque of wheel, thereby reduces the stress of driving gear, the reliability and the life-span of having improved retarder.
Output shaft 10 1 ends and planet carrier 2 connect, and the other end and wheel hub 8 connect, and wheel hub 8 connects with disk type braker 7 and wheel rim 6 again, and planet carrier 2 is in radially delocalization.This structure has realized floating of planet carrier 2, and then has realized that all carrying of retarder is unsteady, makes the retarder running steadily, has reduced the gear transmission noise.Retarder makes 3 planet wheels 3 evenly share load by the unsteady of planet carrier 2, reduces the unbalance factor of load, improves the stationarity and the reliability of running.
When being used for the motor deceleration, motor passes through its output shaft with the input shaft 1 of transmission of power to reducing gear, by 3 planet wheels of central gear drive, 3 rotations of input shaft 1 the other end.Planet wheel 3 drives planet carrier 2 and rotates, and realizes deceleration, and planet carrier 2 is realized the power of motor is passed on the wheel again by wheel hub 8 driving torques.
The utility model can be installed disk type braker, cooperates the stepless speed regulation of wheel hub motor, can realize that the four-wheel steering of electric vehicle drives.Boundary dimension is little, and is in light weight.Retarder, wheel hub, break, the wheel rim compactness that interconnects, axial dimension is little, has guaranteed the clearance of automobile.And it is big to have a velocity ratio, compact structure, and the characteristics that cost is low can realize that the four-wheel steering of automobile drives.When being used for the used for electric vehicle wheel motor and driving, playing slows down increase turn round, the effect of transfer motion power.
The foregoing description just embodies the preferred version of technical solutions of the utility model, those skilled in the art to wherein some part some changes that may make all embodied principle of the present utility model, belong within the protection domain of the present utility model.
Claims (3)
1. reduction gears mechanism, comprise input shaft, planet carrier, planet wheel, wheel rim, break, wheel hub and output shaft, wherein input shaft links to each other with the output shaft of motor, gear ring is fixed on the motor housing, it is characterized in that: an end of described output shaft (10) links to each other with described planet carrier (2) by crowned teeth, the other end of output shaft (10) and described wheel hub (8) connect, and described output shaft (10) adopts the wholly floating structure.
2. reduction gears mechanism as claimed in claim 1 is characterized in that: described planet carrier (2) is in radially delocalization.
3. reduction gears mechanism as claimed in claim 1 is characterized in that: the quantity of described planet wheel (3) is three, is fixed on equably on the planet carrier (2) by planet axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015577 CN2687425Y (en) | 2004-02-12 | 2004-02-12 | Gear reduction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015577 CN2687425Y (en) | 2004-02-12 | 2004-02-12 | Gear reduction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687425Y true CN2687425Y (en) | 2005-03-23 |
Family
ID=34668762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420015577 Expired - Lifetime CN2687425Y (en) | 2004-02-12 | 2004-02-12 | Gear reduction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687425Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901588A (en) * | 2015-06-18 | 2015-09-09 | 宋召挺 | Magnetic suspension automobile tyre system and method of alleviating automobile shaft abrasion |
-
2004
- 2004-02-12 CN CN 200420015577 patent/CN2687425Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901588A (en) * | 2015-06-18 | 2015-09-09 | 宋召挺 | Magnetic suspension automobile tyre system and method of alleviating automobile shaft abrasion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140212 Granted publication date: 20050323 |
|
| CX01 | Expiry of patent term |