CN202746511U - Double-planetary gear transmission system - Google Patents
Double-planetary gear transmission system Download PDFInfo
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- CN202746511U CN202746511U CN 201220446791 CN201220446791U CN202746511U CN 202746511 U CN202746511 U CN 202746511U CN 201220446791 CN201220446791 CN 201220446791 CN 201220446791 U CN201220446791 U CN 201220446791U CN 202746511 U CN202746511 U CN 202746511U
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- gear
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- gears
- planetary gear
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- 230000005540 biological transmission Effects 0.000 title abstract description 12
- 239000000969 carrier Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 4
- 239000003638 reducing agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001340 slower Effects 0.000 description 1
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Abstract
The utility model provides a double-planetary gear transmission system and relates to the technical field of mechanical transmission. A gear ring A is arranged at the circumference of a planetary gear outer shell along the internal side; the inner end of a power shaft is connected with a planetary gear bracket; the outer edge of the planetary gear bracket are divided into three branch forks parallel to the power shaft; a big planetary gear and a small planetary gear are connected to each branch fork in sequence; the gear ring A surrounds and is engaged with the three big planetary gears; the internal sides of the three big planetary gears surround and are engaged with small sun gears; the internal sides of the three small planetary gears surround and are engaged with big sun gears; the small sun gears and the big sun gears are mutually arranged on an output shaft; the output shaft is fixed on a motor outer shell through a bearing; a gear ring B is arranged on the circumference of the motor outer shell along the internal side; and the gear ring B surrounds and is engaged with the three small planetary gears. The double-planetary gear transmission system provided by the utility model has the advantages of double-gear automatic transmission, high transmission efficiency and long service life of equipment.
Description
Technical field
The utility model relates to the mechanical speed change technical field, further is planetary speed variator.
Background technique
General speed change gear adopts parallel axes multi-gear Transmission Design, and its advantage is, can realize automatic speed changing, but it is in the process of gear engagement, and the axle translation extrapolation that easily causes forms the torsion phenomenon of axle, thereby causes energy loss, has affected transmission efficiency.Simultaneously, equipment is fragile.
Meanwhile, in speed change gear, mostly the planetary gear speed-changing system is that single planetary gear slows down, and its advantage is: a gear places three center planetary gears, is connected by three planetary pinions; Because three planetary pinions are symmetrical, and planetary pinion be outward gear ring, the axle translation torsion phenomenon that therefore can avoid general parallel shaft (speed) reducer to cause, thus can avoid energy loss, the raising transmission efficiency.But its shortcoming is to realize automatic speed changing.
Summary of the invention
The purpose of this utility model is to provide a kind of dual planetary gear speed variator system, and it can overcome above shortcoming, brings into play both advantages, thereby realizes efficient speed change.And life of equipment is long, and is durable.
The purpose of this utility model realizes by following scheme:
1, dual planetary gear speed variator system, comprise line shaft, output shaft, planetary pinion, gear ring, the outer end of line shaft connects power, line shaft passes through the center of circle of planetary pinion frame, and by bearing connection planetary pinion frame, the circumference of planetary pinion frame is provided with tooth along the inboard, form gear ring A, it is characterized in that: the inner of line shaft connects planetary gear carrier, three forks parallel with line shaft are told in the planetary gear carrier outer, and each fork is upper to connect mafor planet gear and small planetary gear successively by bearing; Described gear ring A encircles and meshes three mafor planet gears, three mafor planet gear inboards encircle and mesh small sun gear, three small planetary gear inboards encircle and mesh large sun gear, small sun gear is arranged on the output shaft with large sun gear jointly, output shaft is fixed on the motor casing body by bearing, the circumference of motor casing body is provided with tooth along the inboard, forms gear ring B, and gear ring B encircles and mesh three small planetary gears.
The purpose of this utility model is further to realize by following scheme:
Described three mafor planet gears and three small planetary gears are symmetrical around line shaft.
Described planetary pinion frame and motor casing body are interconnected and fixed.
Described large sun gear is centrifugal clutch pinion, small sun gear is ratchet, being set to of centrifugal clutch pinion and ratchet: take a speed limit as the boundary, when rotating speed is lower than this speed limit, line shaft drives three mafor planet gears and rotates, three mafor planet gear engagement small sun gears, thereby the rotation of drive output shaft, at this moment, large sun gear is in idling conditions; When rotating speed was higher than this speed limit, line shaft drove three small planetary gears and rotates, and three small planetary gears mesh large sun gear, thereby drove the rotation of output shaft, and at this moment, small sun gear is in idling conditions.
The external diameter of described planetary pinion frame, motor casing body is made into the same, correspondingly adjusts a fork, so that the axle of the axial ratio mafor planet gear of small planetary gear is outer.
The beneficial effects of the utility model are: 1, the same with single planetary gear efficient, small sun gear (ratchet) places three mafor planet gear centers, is connected by three mafor planet gears; Large sun gear (centrifugal clutch pinion) places three small planetary gear centers, is connected by three small planetary gears, forms two shift transmissions; Because it is symmetrical that three large small planetary gears are, and planetary pinion be outward gear ring, the axle translation torsion phenomenon that therefore can avoid general parallel shaft (speed) reducer to cause, thus can avoid energy loss, the raising transmission efficiency.2, two gear automatic speed changings have been realized.3, compact structure, volume is little.4, life of equipment is long, durable.
Description of drawings
Fig. 1 is the utility model structural representation, and Fig. 2 is the utility model mafor planet gear structural representation.
Among the figure: 1 is line shaft, and 2 is the planetary pinion frame, and 2-1 is gear ring, 3 is planetary gear carrier, 3-1 is a fork, and 4 is the motor casing body, and 4-1 is gear ring, 5 is motor, 6 is motor reel, and 7 is small planetary gear, and 8 is mafor planet gear, 9 is large sun gear (centrifugal clutch pinion), and 10 is small sun gear (ratchet).
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, and above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with embodiment the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1 and Figure 2, line shaft 1 passes through the center of circle of planetary pinion frame 2, and by bearing connection planetary pinion frame 2, planetary pinion frame 2 is in the form of annular discs, side-looking is " ］ " shape (referring to Fig. 1), the circumference of planetary pinion frame 2 is provided with tooth along the inboard, forms gear ring 2-1, gear ring 2-1 encircles three mafor planet gears 8, and simultaneously with three mafor planet gears 8 on the tooth engagement; The inner of line shaft 1 connects planetary gear carrier 3, three fork 3-1s parallel with pto＝power take-off 1 are told in planetary gear carrier 3 outers, it is symmetrical around line shaft 1 that each fork 3-1 upward connects mafor planet gear 8 and 7, three mafor planet gears 8 of small planetary gear and three small planetary gears 7 successively by bearing.Motor 5 is outside equipped with motor casing body 4, motor casing body 4 is in the form of annular discs, side-looking is " ［ " shape (referring to Fig. 1), the circumference of motor casing body 4 is provided with tooth along the inboard, form gear ring 4-1, gear ring 4-1 encircles three small planetary gears 7, and simultaneously with three small planetary gears 7 on the tooth engagement; Motor reel 6 passes through motor casing body 4 centers of circle, and be fixed on the motor casing body 4 by the bearing activity, motor reel 6 is provided with large sun gear (centrifugal clutch pinion) 9 and small sun gear (ratchet) 10, wherein, small sun gear (ratchet) 10 places three mafor planet gear 8 centers, is connected by three mafor planet gears 8; Large sun gear (centrifugal clutch pinion) 9 places three small planetary gear 7 centers, is connected by three small planetary gears 7.
Planetary pinion frame 2 can be interconnected and fixed with motor casing body 4, also can be fixing separately.
When rotating speed is low (1 grade), line shaft 1 drives three mafor planet gears 8 and rotates, three mafor planet gear 8 engagement small sun gears (ratchet) 10, thereby the rotation of driving electric arbor 6.At this moment, large sun gear (centrifugal clutch pinion) 9 is in idling conditions.
When rotating speed is higher (2 grades), line shaft 1 drives three small planetary gears 7 and rotates, three small planetary gear 7 large sun gears of engagement (centrifugal clutch pinion) 9, at this moment, because speed reaches certain value, the centrifugal force that produces is so that centrifugal clutch generation effect, and large sun gear 9 no longer dallies, thus the rotation of driving electric arbor 6.At this moment, small sun gear (ratchet) 10 is in idling conditions.
Because it is symmetrical that three large small planetary gears are, and planetary pinion be outward gear ring, the axle translation torsion phenomenon that therefore can avoid general parallel shaft (speed) reducer to cause, thus can avoid energy loss, the raising transmission efficiency.
Embodiment 2:
As shown in Figure 1, the external diameter of planetary pinion frame 2, motor casing body 4 is made into the same, correspondingly adjusts a fork 3-1, so that the axle of the axial ratio mafor planet gear 8 of small planetary gear 7 is outer.The effect of doing like this is that outward appearance neatly coordinates.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (5)
1. dual planetary gear speed variator system, comprise line shaft, output shaft, planetary pinion, gear ring, the outer end of line shaft connects power, line shaft passes through the center of circle of planetary pinion frame, and by bearing connection planetary pinion frame, the circumference of planetary pinion frame is provided with tooth along the inboard, form gear ring A, it is characterized in that: the inner of line shaft connects planetary gear carrier, three forks parallel with line shaft are told in the planetary gear carrier outer, and each fork is upper to connect mafor planet gear and small planetary gear successively by bearing; Described gear ring A encircles and meshes three mafor planet gears, three mafor planet gear inboards encircle and mesh small sun gear, three small planetary gear inboards encircle and mesh large sun gear, small sun gear is arranged on the output shaft with large sun gear jointly, output shaft is fixed on the motor casing body by bearing, the circumference of motor casing body is provided with tooth along the inboard, forms gear ring B, and gear ring B encircles and mesh three small planetary gears.
2. dual planetary gear speed variator system according to claim 1 is characterized in that: described three mafor planet gears and three small planetary gears are symmetrical around line shaft.
3. dual planetary gear speed variator system according to claim 1, it is characterized in that: described planetary pinion frame and motor casing body are interconnected and fixed.
4. dual planetary gear speed variator system according to claim 1, it is characterized in that: described large sun gear is centrifugal clutch pinion, small sun gear is ratchet, being set to of centrifugal clutch pinion and ratchet: take a speed limit as the boundary, when rotating speed was lower than this speed limit, line shaft drove three mafor planet gears and rotates, three mafor planet gear engagement small sun gears, thereby drive the rotation of output shaft, at this moment, large sun gear is in idling conditions; When rotating speed was higher than this speed limit, line shaft drove three small planetary gears and rotates, and three small planetary gears mesh large sun gear, thereby drove the rotation of output shaft, and at this moment, small sun gear is in idling conditions.
5. dual planetary gear speed variator system according to claim 1 is characterized in that: the external diameter of described planetary pinion frame, motor casing body is made into the same, correspondingly adjusts a fork, so that the axle of the axial ratio mafor planet gear of small planetary gear is outer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446791 CN202746511U (en) | 2012-09-04 | 2012-09-04 | Double-planetary gear transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446791 CN202746511U (en) | 2012-09-04 | 2012-09-04 | Double-planetary gear transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746511U true CN202746511U (en) | 2013-02-20 |
Family
ID=47705910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220446791 Expired - Fee Related CN202746511U (en) | 2012-09-04 | 2012-09-04 | Double-planetary gear transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746511U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386497A (en) * | 2018-01-11 | 2018-08-10 | 福州六班动力机械工程有限公司 | A kind of adaptive transmission and the automobile with adaptive transmission |
| CN110395110A (en) * | 2019-08-09 | 2019-11-01 | 中北大学 | A kind of pure electric automobile two speed transmission |
-
2012
- 2012-09-04 CN CN 201220446791 patent/CN202746511U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386497A (en) * | 2018-01-11 | 2018-08-10 | 福州六班动力机械工程有限公司 | A kind of adaptive transmission and the automobile with adaptive transmission |
| CN110395110A (en) * | 2019-08-09 | 2019-11-01 | 中北大学 | A kind of pure electric automobile two speed transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130904 |