CN202371092U - Planetary speed reducer capable of realizing reverse constant-speed transfer - Google Patents
Planetary speed reducer capable of realizing reverse constant-speed transfer Download PDFInfo
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- CN202371092U CN202371092U CN2011205468486U CN201120546848U CN202371092U CN 202371092 U CN202371092 U CN 202371092U CN 2011205468486 U CN2011205468486 U CN 2011205468486U CN 201120546848 U CN201120546848 U CN 201120546848U CN 202371092 U CN202371092 U CN 202371092U
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- ring gear
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Abstract
The utility model relates to a planetary speed reducer capable of realizing reverse constant-speed transfer. The planetary speed reducer comprises a sun gear, an inner gear ring, a planetary gear set, a planetary gear carrier and a shell, wherein the sun gear is fixed on an input shaft; an output shaft is fixedly arranged on the planetary gear carrier; and the shell is positioned on the input shaft and the output shaft by bearings. The planetary speed reducer is characterized in that the inner gear ring is positioned on the shell through a bearing; a one-way movement structure is arranged between the inner gear ring and the shell; and three planetary gears which are uniformly distributed between the inner gear ring and the sun gear are positioned on pin shafts of the planetary gear carrier through one-way bearings. The one-way bearings are arranged on the side of the inner gear ring and the planetary gears, or a one-way clutch is additionally arranged on the side of the inner gear ring, so that variable-speed transmission is adopted when moment is positively transferred, same-speed transmission is adopted when the moment is reversely transferred, the application range of a planetary transmission is expanded, the planetary speed reducer can be particularly applied to a scheme that a vehicle starting motor and a generator are integrally designed, the starting requirement of high torque can be met only by one motor, and the motor can be reversely driven at constant speed to generate electricity after an engine is started.
Description
Technical field:
The utility model belongs to the deceleration field, slows down during particularly a kind of forward carry-over moment and the planetary reducer of constant speed during reverse the transmission.
Background technique:
Planetary reducer is a kind of traditional retarding device; Extensively apply on the power train; But have high, the characteristics of multi-stage serial connection again of advantages of small volume, speed change efficient, its structure includes and comprises sun gear, ring gear, planet wheel, planetary wheel carrier and shell, and sun gear is fixed on the input shaft; Be fixed with output shaft on the planetary wheel carrier, locate through bearing between shell and input shaft and output shaft.Existing planetary reducer is reversible carry-over moment structure, also is that the forward transmission is deceleration, and back transfer is the speedup behavior, generally is used in the deceleration of motor output, seldom utilizes its reverse speedup effect, does not perhaps consider on the acting in opposition.But at special occasions, in vehicle launch motor and generator integrated design, promptly need consider reverse problem of transmission, the constant speed structure during especially reverse the transmission, this just becomes the object of the utility model research.
Summary of the invention:
The purpose of the utility model is that a kind of forward transmission of design is slowed down, the planetary reducer of reverse transmission constant speed; Secondary objective promptly provides a kind of planetary reducer of high reduction speed ratio.
The utility model technological scheme is achieved in that a kind of planetary reducer of reverse transmission constant speed; Comprise sun gear, ring gear, planetary gear set, planetary wheel carrier and shell; Sun gear is fixed on the input shaft, is fixed with output shaft on the planetary wheel carrier, locatees through bearing between shell and input shaft and output shaft; It is characterized in that ring gear is positioned on the shell through a bearing, be the unidirectional movement structure between ring gear and shell; Three planetary gear set that are distributed between ring gear and sun gear are positioned on the bearing pin of planetary wheel carrier through unilateral bearing.Described ring gear cooperates with unilateral bearing on the planet wheel, realize the relation of reverse transmission output shaft and the transmission of input shaft constant speed, and forward transmission and common planetary reducer is as good as.
Unidirectional movement structure between said ring gear and shell refers to and is provided with a kind of overrunning clutch between the two.When forward transmits speed change, make ring gear not rotate, planet wheel rotates the output decelerating effect around ring gear; During reverse transmission, ring gear can follow planetary pinion and output shaft rotates synchronously, drives the rotation of input shaft constant speed.
The positioning bearing that unidirectional movement structure between said ring gear and shell refers between ring gear and shell is a unilateral bearing.Also promptly utilize a unilateral bearing, both played positioning relation, also play the effect that is rotated in the forward of restriction ring gear.
In order to improve the reduction speed ratio of single-stage planetary retarder, it can adopt following two kinds of concrete schemes to realize:
One of which, said planetary gear set are coaxial disjunctor bidentate wheel construction, comprise a gearwheel and a small gear, wherein gearwheel and sun gear engagement, and small gear and ring gear engagement, the bidentate wheel construction is positioned on the planetary wheel carrier bearing pin through unilateral bearing.The tooth that utilizes coaxial bidentate wheel to exist is poor, can reach higher reduction speed ratio.
Two, said planetary gear set is the multi-stage gear gear, primary pinion in this multi-stage gear gear and sun gear engagement, final stage gear and ring gear engagement; Each gear is positioned on the planetary wheel carrier through bearing pin separately, wherein has a gear to be positioned on the described bearing pin through unilateral bearing.Utilize the multi-stage gear gear, can reach the reduction speed ratio of design demand, make, reach traditional inaccessiable deceleration effect at the one-level planetary transmission.But when multi-change speed, should notice that the output shaft sense of rotation wants consistent.
The planetary reducer structure that the utility model provides, during its forward carry-over moment, the input shaft high speed rotating of planetary reducer is high pulling torque, the slow-speed of revolution after slowing down, and is exported by output shaft.During reverse carry-over moment, moment is by the output shaft input of planetary reducer, and retarder does not play decelerating effect, and by the input shaft output torque, at this moment input shaft and output shaft rotate with speed; Vice versa.
The utility model adopts unilateral bearing at ring gear and planet wheel side, and perhaps the additional overrunning clutch of ring gear side makes that the forward transmission is the speed change transmission; And reverse transmission is with fast transmission, and perhaps the forward transmission is with fast transmission, and the transmission of reverse transmission speedup; The use field of expansion planetary transmission; Especially can apply in the scheme of vehicle launch motor and generator integrated design, only need a motor, both satisfy the need of the starting of big torque; After the engine start, can generate electricity by reverse transmission constant speed drive motor again; Moreover the planetary gear set of the utility model can adopt the multi-stage gear speed change, can improve reduction speed ratio, the output characteristics that torque is big, volume is little of retarder.
Description of drawings:
Below in conjunction with concrete legend the utility model is further specified:
The reverse transmission constant speed of Fig. 1 planetary reducer generalized section
The planetary reducer schematic representation of Fig. 2 bidentate wheel construction
The planetary reducer schematic representation of Fig. 3 multi-stage gear structure
Wherein
1-sun gear 2-ring gear 3-planetary gear set
31-gearwheel 32-small gear 33-primary pinion
34-final stage gear 4-planetary wheel carrier 5-shell
6-input shaft 7-output shaft 8-bearing
81-unilateral bearing 82-overrunning clutch
Embodiment:
See figures.1.and.2; The planetary reducer of reverse transmission constant speed comprises sun gear 1, ring gear 2, planetary gear set 3, planetary wheel carrier 4 and shell 5, and sun gear is fixed on the input shaft 6; Be fixed with output shaft 7 on the planetary wheel carrier 4; Ring gear 2 is positioned on the shell 5 through a bearing 8 through bearing 8 location for 7 of shell 5 and input shaft 6 and output shafts, and 5 on ring gear 2 and shell are the unidirectional movement structure; Described unidirectional movement structure has two kinds of organization plans; The positioning bearing that first ring gear 2 and shell are 5 directly adopts a unilateral bearing; It two is to be provided with a kind of overrunning clutch 82 at ring gear 2 and 5 on shell; Ring gear 2 relative fixed when being rotated in the forward by its realization, ring gear 2 rotatable structures during counter-rotating.Three planetary gear set 3 that are distributed on 1 of ring gear 2 and sun gear are positioned on the bearing pin of planetary wheel carrier 4 through unilateral bearing 81; Make planetary gear set 3 that the planetary wheel carrier 4 generation rotations relatively of a direction also can only be arranged; During counter-rotating and planetary wheel carrier 4 synchronous; Cooperate with ring gear 2, drive sun gear 1 and rotate synchronously.
Above-mentioned planetary gear set 3 can refer to existing individual gears structure, also can adopt following two kinds of preferred versions, to design the torque bigger with output of higher rotating ratio.
Like figure; Said planetary gear set 3 is coaxial disjunctor bidentate wheel construction, comprises a gearwheel 31 and a small gear 32, wherein gearwheel 31 and sun gear 1 engagement; Small gear 32 and ring gear 2 engagements, the bidentate wheel construction is positioned on planetary wheel carrier 4 bearing pins through unilateral bearing 81.This structure traffic direction is the same with single planet wheel, but that rotating ratio can be done is higher
With reference to Fig. 3, said planetary gear set 3 is the multi-stage gear gear, primary pinion 33 in this multi-stage gear gear and sun gear 1 engagement, final stage gear 34 and ring gear 2 engagements; Each gear is positioned on the planetary wheel carrier 4 through bearing pin separately, wherein has a gear to be positioned on the described bearing pin through unilateral bearing 81, and also being only need have one in the multiple sets of teeth wheel to adopt unilateral bearing 81, can realize the purpose of stall; The design of multi-stage gear gear can further improve rotating ratio, satisfies needing of different outputs.
Claims (5)
1. the planetary reducer of a reverse transmission constant speed; Comprise sun gear, ring gear, planetary gear set, planetary wheel carrier and shell; Sun gear is fixed on the input shaft, is fixed with output shaft on the planetary wheel carrier, locatees through bearing between shell and input shaft and output shaft; It is characterized in that ring gear is positioned on the shell through a bearing, be the unidirectional movement structure between ring gear and shell; Three planetary gear set that are distributed between ring gear and sun gear are positioned on the bearing pin of planetary wheel carrier through unilateral bearing.
2. the planetary reducer of a kind of reverse transmission constant speed according to claim 1 is characterized in that unidirectional movement structure between said ring gear and shell refers to be provided with a kind of overrunning clutch between the two.
3. the planetary reducer of a kind of reverse transmission constant speed according to claim 1 is characterized in that the positioning bearing that the unidirectional movement structure between said ring gear and shell refers between ring gear and shell is a unilateral bearing.
4. the planetary reducer of a kind of reverse transmission constant speed according to claim 1; It is characterized in that said planetary gear set is coaxial disjunctor bidentate wheel construction; Comprise a gearwheel and a small gear; Wherein gearwheel and sun gear engagement, small gear and ring gear engagement, the bidentate wheel construction is positioned on the planetary wheel carrier bearing pin through unilateral bearing.
5. the planetary reducer of a kind of reverse transmission constant speed according to claim 1 is characterized in that said planetary gear set is the multi-stage gear gear, primary pinion in this multi-stage gear gear and sun gear engagement, final stage gear and ring gear engagement; Each gear is positioned on the planetary wheel carrier through bearing pin separately, wherein has a gear to be positioned on the described bearing pin through unilateral bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205468486U CN202371092U (en) | 2011-12-23 | 2011-12-23 | Planetary speed reducer capable of realizing reverse constant-speed transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205468486U CN202371092U (en) | 2011-12-23 | 2011-12-23 | Planetary speed reducer capable of realizing reverse constant-speed transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371092U true CN202371092U (en) | 2012-08-08 |
Family
ID=46594796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205468486U Expired - Fee Related CN202371092U (en) | 2011-12-23 | 2011-12-23 | Planetary speed reducer capable of realizing reverse constant-speed transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494083A (en) * | 2011-12-23 | 2012-06-13 | 叶羽经 | Constant-speed reverse transfer planetary reducer |
| CN105370823A (en) * | 2014-08-21 | 2016-03-02 | 苏州工业园区泰格电子科技有限公司 | Speed regulation device |
-
2011
- 2011-12-23 CN CN2011205468486U patent/CN202371092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494083A (en) * | 2011-12-23 | 2012-06-13 | 叶羽经 | Constant-speed reverse transfer planetary reducer |
| CN105370823A (en) * | 2014-08-21 | 2016-03-02 | 苏州工业园区泰格电子科技有限公司 | Speed regulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |