CN202132463U - Overrunning multi-stage stepless speed changer - Google Patents
Overrunning multi-stage stepless speed changer Download PDFInfo
- Publication number
- CN202132463U CN202132463U CN201120246378U CN201120246378U CN202132463U CN 202132463 U CN202132463 U CN 202132463U CN 201120246378 U CN201120246378 U CN 201120246378U CN 201120246378 U CN201120246378 U CN 201120246378U CN 202132463 U CN202132463 U CN 202132463U
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- input shaft
- grade
- dish
- 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 - Fee Related
Links
Images
Landscapes
- Structure Of Transmissions (AREA)
Abstract
The utility model discloses an overrunning multi-stage stepless speed changer, which comprises an input shaft and an output shaft. An intermediate shaft is disposed respectively on both sides of the input shaft, and four side-by-side cone discs are arranged on the input shaft, wherein the cone discs located at both ends are arranged face to face and fixed on the input shaft, the cone discs located in the middle are arranged back to back, mutually fixed and connected to the input shaft in sliding mode, and strip grooves with adjustable width are formed respectively between the cone discs. A driven speed changing mechanism consists of two cone discs which are arranged face to face and fixed on corresponding intermediate shafts, and the strip grooves with fixed width are formed respectively between cone discs on the intermediate shafts. Annular metal straps are correspondingly disposed between the strip grooves. A plurality of shift gear sets with synchronizers are respectively installed on the intermediate shafts and respectively meshed with output gears mounted on the output shaft. The overrunning multi-stage stepless speed changer has a large range of transmission ratio, increases transmitted torque, and also achieves the objective of prolonging service life of the speed changer.
Description
Technical field
The utility model relates to a kind of automotive transmission, is specially a kind of override type multistage stepless speed variator.
Background technique
In the existing automobile variable speed technology, gear is divided into two types: a kind of is step change transmission, and another kind is stepless speed variator (Continuously Variable Transmission is called for short CVT).The advantage of step change transmission is to transmit high-power and high pulling torque; Its transmission of power is accurate, reliability is high; But its shortcoming is that the retaining number is limited, can not give full play to the performance of motor car engine, and also there is the high defective of oil consumption in the automatic transmission case in the step change transmission.Alternative stepless speed variator (following unification is represented with CVT) has infinite gear in theory; CVT and step change transmission are compared; Its advantage is a velocity ratio continuous variable within the specific limits, makes motor car engine export speed range section work preferably at power, helps reducing oil consumption; And the shift impact when not having step change transmission to change velocity ratio, more level and smooth when shifting gears like this.
Along with the development of CVT, metal band type CVT occurred, but there is the weakness that transmitting torque is limited, gear ratio is big inadequately in existing metal band type CVT, only be used for the automobile of medium and small discharge capacity at present.Because what metal band type CVT adopted is symmetrical straight edge line awl dish, metal tape will inevitably produce deflection in speed-change process, and deflection is totally unfavorable for the transmission energy process of CVT.This deflection can limit the excursion of the awl dish radius of clean-up on the one hand, makes that the excursion of gear ratio is less; Also limited the increase that awl coils the minimum radius of clean-up on the other hand, made that transferable torque is limited, promptly transmission capacity is limited, can't on bigger discharge capacity automobile, use.
The model utility content
To above-mentioned deficiency of the prior art; The main purpose of the utility model is to solve the existing big inadequately problem of metal band type stepless speed variator gear range; Further also solved the inflexible problem of control, and a kind of override type multistage stepless speed variator with big speed ratio and big transmitting torque is provided.And used two free wheel devicees to make control easier.
The technological scheme of the utility model: this programme speed changer by adopt two metal tapes forms grade gear train that output of stepless change part and diaxon input of input diaxon output can the conversion gear partly and two free wheel devicees that are connected above two parts form.Override type multistage stepless speed variator; Comprise input shaft and output shaft; It is characterized in that; Be respectively equipped with first jack shaft and second jack shaft in the both sides of input shaft, on input shaft, be provided with initiatively gear and start clutch, on described first jack shaft and second jack shaft, be respectively arranged with and be used for the driven gear that cooperates with said active gear; Said active gear is to be made up of four awl dishes that are arranged side by side; Wherein, The first awl dish and the 4th awl dish that are positioned at two ends are provided with in opposite directions and are fixed on the input shaft; Second awl dish in the middle of being positioned at and third hand tap dish are provided with dorsad and interfix and be slidingly connected with input shaft, between the first awl dish and the second awl dish and third hand tap dish and the 4th awl dish, form broad-adjustable first trough of belt and second trough of belt respectively; Said driven gear is to be made up of two awl dishes that are provided with in opposite directions and are fixed on the corresponding jack shaft, the 3rd trough of belt and the four-tape groove of each self-forming fixed width between the 5th awl dish on first jack shaft and the 7th awl dish on the 6th awl dish and second jack shaft and the 8th awl dish; At first metal tape and second metal tape that are provided with annular corresponding between the 3rd trough of belt and second trough of belt and between the four-tape groove and first trough of belt; Said first metal tape and the second metal tape homogeneous end are enclosed within on the input shaft, and the other end is enclosed within respectively on the corresponding jack shaft; First free wheel device, first grade of gear and third gear gear also are installed on first jack shaft; Second free wheel device and second grade of gear are installed on second jack shaft; Described three shelves gears respectively have a synchronizer; There is level ground to change the velocity ratio of jack shaft and output shaft through synchronizer; Described three shelves gears respectively be located at output shaft on corresponding first grade of output gear, second grade of output gear or third gear output gear be meshed, three output gears drive output shaft respectively and rotate.
Slidably awl dish through on two jack shafts, being provided with in the utility model; Regulate two subband transmission velocity ratios simultaneously; Particularly, the velocity ratio of two secondary metal tape transmissions changes in the opposite direction, when the velocity ratio of one of them band transmission is from large to small the time; The velocity ratio of another band transmission is to change from small to big, and vice versa.Owing to utilized this characteristics, the utilization free wheel device connects two strip metal bands and shelves gear, and is combined with the shelves gear transmission structure of level; Make that the excursion of velocity ratio is expanded greatly, also make the moment of torsion that transmits also significantly improve, with respect to traditional stepless speed variator; It is unrestricted that the gear ratio of the utility model speed changer can reach in theory; Adopt the metal of same strength specification, driving torque also expands to more than the twice, even bigger.
Further, first grade of output gear, second grade of output gear and third gear output gear are arranged in order by diameter is descending.
With respect to existing technology, the utlity model has following beneficial effect:
1, have velocity ratio on a large scale: the speed changer of the utility model is owing to adopt two metal tape alternations (two metal tape difference transferring power); Cooperate with the shelves gear train of different gears; The transmission specific energy of whole speed changer is changed in big scope continuously; And the shift process medium power can not interrupt, thereby further improves VE Vehicle Economy and discharging.
2, increased the moment of torsion that transmits: through the drive mechanism of design shelves gear train; The velocity ratio of whole stepless speed variator is increased; And then the velocity ratio excursion (being gear ratio) of metal band type CVT self is reduced; The awl that can increase the CVT input shaft so during fabrication coils the minimum radius of clean-up, thereby has increased transmitting torque.According to the scheme of the utility model, use the metal tape of the existing same strength specification of CVT, transmitting torque be can design and original twice even bigger stepless speed variator expanded as, can make CVT be applied to the vehicle of bigger discharge capacity.
3, prolonged the working life of speed changer:, thereby prolonged the working life of speed changer because the speed changer of the utility model adopts two metal tape alternations.
4, on two jack shafts, make control become easier with free wheel device respectively.
Description of drawings
Fig. 1 is the structural representation of the utility model override type multistage stepless speed variator.
Fig. 2 is the another kind of structural representation of the utility model override type multistage stepless speed variator.
Among the figure, 1-input shaft, 2-output shaft, 31-the first jack shaft, 32-the second jack shaft, 41-the first awl dish; 42-the second awl dish, 43-third hand tap dish, 44-the four awl dish, 45-the five awl dish, 46-the six awl dish; 47-the seven awl dish, 48-the eight awl dish, 51-the first trough of belt, 52-the second trough of belt, 53-the three trough of belt; 54-the four-tape groove, 61-the first metal tape, 62-the second metal tape, 70-start clutch, 71-the first free wheel device; 72-the second free wheel device, 81-the first grade of gear, 82-the second grade of gear, 83-third gear gear, 91-the first grade of output gear; 92-the second grade of output gear, 93-third gear output gear, 10-the first grade of synchronizer, 12-the second grade of synchronizer, 11-third gear synchronizer.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1, the override type multistage stepless speed variator of the utility model comprises input shaft 1 and output shaft 2, respectively is provided with a jack shaft in the both sides of said input shaft 1, and said input shaft 1 all is connected through metal tape with two jack shafts; On input shaft 1, be provided with initiatively gear, on first jack shaft 31 and second jack shaft 32, be respectively arranged with and be used for the driven gear that cooperates with said active gear; Said active speed changing structure is to be made up of four awl dishes that are arranged side by side, and said awl dish is the disk with conical inclined surface, is the existing mechanical parts, does not detail at this; Wherein, The first awl dish 41 and the 4th awl dish 44 that are positioned at two ends are provided with and are fixed on the input shaft 1 in opposite directions; The second awl dish 42 in the middle of being positioned at is provided with dorsad with third hand tap dish 43 and interfixes and be slidingly connected with input shaft 1, forms broad-adjustable first trough of belt 51 and second trough of belt 52 between the first awl dish 41 and the second awl dish 42 and third hand tap dish 43 and the 4th awl dish 44 respectively.Said driven gear is to be made up of two awl dishes that are arranged in opposite directions on the corresponding jack shaft, the 3rd trough of belt 53 and four-tape groove 54 of each self-forming fixed width between the 7th awl dish 47 on the 5th awl dish 45 on first jack shaft 31 and the 6th awl dish 46 and second jack shaft 32 and the 8th awl dish 48; At first metal tape 61 and second metal tape 62 that are provided with annular corresponding between the 3rd trough of belt 53 and second trough of belt 52 and between the four-tape groove 54 and first trough of belt 51; Said first metal tape 61 and second metal tape, 62 homogeneous ends are enclosed within on the input shaft 1; The other end is enclosed within respectively on the corresponding jack shaft, forms two secondary speed ratio variable strip zone drive mechanisms of motion simultaneously.When input shaft 1 rotation, first metal tape 61 and second metal tape 62 will drive first jack shaft 31 and 32 rotations of second jack shaft respectively.On input shaft 1, be provided with start clutch 70, can play a protective role to input end, when motor breaks down, can break off being connected of input shaft 1 and motor output shaft, avoid stepless speed variator to be damaged through start clutch 70 through start clutch 70.On first jack shaft 31, also be provided with first free wheel device 71, first grade of gear 81 and third gear gear 83; On second jack shaft 32, also be provided with second free wheel device 72 and second grade of gear 82, said first grade of gear 81, second grade of gear 82 and third gear gear 83 are respectively through synchronizer 10,12,11 and corresponding jack shaft combination; Corresponding being provided with is used for respectively and first grade of output gear of first grade of gear 81, second grade of gear 82 and 83 engagements of third gear gear 91, second grade of output gear 92 and third gear output gear 93 on output shaft 2.
Working principle: referring to Fig. 1, closed start clutch 70, input shaft 1 are introduced external impetus and are driven first metal tape 61 and 62 rotations of second metal tape that are enclosed within on the input shaft 1; During vehicle starting, first metal tape 61 is in the speed ratio maximum rating, and the mantle dish 46 on first jack shaft 31 is in the position near fixed cone dish 45; Mantle dish 42,43 on the corresponding input shaft 1 is in away from fixed cone dish 44 near the position of fixed cone dish 41, and the mantle dish 47 on corresponding second jack shaft 32 is in the position away from fixed cone dish 48, thereby; Second metal tape 62 is in minimum speed ratio state, and synchronizer 10 combines, and synchronizer 11,12 is in disengaged position; Natural combination along with first free wheel device 71; Power is passed to output shaft 2 through first metal tape 61 and first grade of gear 81, though also natural combination of second free wheel device 72, because synchronizer 12 disengagements; So 62 zero loads of second metal tape, not transferring power; Raising along with the speed of a motor vehicle; Speed changer reduces velocity ratio if desired, and the oil cylinder working-pressure on the mantle dish 47 is increased, and forces mantle dish 47 to be drawn close to fixed cone dish 48; Mantle dish 42,43 through second metal tape 62 promotes on the input shaft is drawn close to fixed cone dish 44 together; Promote mantle dish 46 on first jack shaft away from fixed cone dish 45 through first metal tape 61, thereby first metal tape, 61 speed ratios are reduced, and unloaded second metal tape, 62 speed ratios become big; When first metal tape, 61 speed ratio ratio change to minimum (at this moment, the second unloaded metal tape speed ratio changes to maximum) thereupon, and vehicle is when still needing speed changer to reduce velocity ratio; Synchronizer 12 combines, and the second grade of gear 82 and second jack shaft 32 is combined, through the appropriate design of one grade of gear train, second gear velocity ratio; Make at this moment with second free wheel device 72 to be that the right-hand member axle rotating speed of the jack shaft 32 of boundary is slightly larger than the left end shaft rotating speed, thus second free wheel device 72 throw off naturally, subsequently; Through increasing the oil cylinder working-pressure on the awl dish 47, first metal tape, 61 velocity ratios are increased, second metal tape, 62 velocity ratios reduce simultaneously; The left half axle rotating speed of second jack shaft 32 increases; When the left half axle of second jack shaft 32 is increased to the right-hand member axle that equals second jack shaft 32, second free wheel device, 72 natural combination, transmission of power switches to second jack shaft 32 gradually by first jack shaft 31; At last; First free wheel device 71 is thrown off fully, and power all is delivered to output shaft 2 by second metal tape 62, second jack shaft 32, second grade of gear 82, and 61 zero loads of first metal tape; Throw off synchronizer 10 then, so just accomplished switching from one grade to second gear.Switch to the gear-driven process of third gear and roughly the same above-mentioned from second grade of gear transmission.
Needing speed changer to increase subtracting in grade process of velocity ratio at vehicle, is example with the process from second gear to a grade, when second gear; Synchronizer 12 combines; Synchronizer 10,11 is in disengaged position, the natural combination of second free wheel device 72, and power is passed to output shaft 2 through second metal tape 62 and second grade of gear 82; 61 zero loads of first metal tape, not transferring power; When second metal tape 62 is increased to gearshift during synchronous points when velocity ratio; Be that the rotating speed of left half axle of boundary is identical or lower slightly with the rotating speed of one grade of gear 81 with first free wheel device 71 on first jack shaft 31, be convenient to first grade of gear 81 and combine that first free wheel device 71 is in nature and throws off or critical disengaged condition with synchronizer 10; Subsequently; First metal tape, 61 velocity ratios are increased, first free wheel device, 71 natural combination, transmission of power switches to first jack shaft 31 gradually by second jack shaft 32; At last; Second free wheel device 72 is thrown off fully, and power all is delivered to output shaft 2 by the first band transmission, first jack shaft 31, first grade of gear 81, and 62 zero loads of second metal tape; Throw off synchronizer 12 then, so just accomplished switching from second gear to a grade.Switch to second grade of gear-driven process and roughly the same above-mentioned from the third gear gear transmission.
Like this, cooperating the switching of gear, first, second two groups of metal tape alternations make transmission gear ratio free of discontinuities, non-overlapping continuous variation within a large range.
In the utility model, the gear ratio of complexed metal band transmission suitably designs the velocity ratio of each grade gear train, and the impact during gear switch is very little, and in addition, the control that two clutches switch also is automatically, and is quite easy.
In the utility model, the quantity of shelves gear is not limited only to three groups, according to the needs of actual-gear; More shelves gear also can be set; And then make speed changer have bigger gear ratio, and perhaps, can be through increasing the ratio change scope that gear reduces metal tape self; Thereby increase the minimum radius of clean-up of metal tape transmission, reach the purpose of further expansion stepless speed variator transmitting torque thus.
In the utility model, driving belt also is not limited to metal tape, adopt other types driving belt (as but be not limited to rubber tape) have the effect that enlarges its transmitting torque and gear ratio too.
Claims (2)
1. override type multistage stepless speed variator; Comprise input shaft (1) and output shaft (2); It is characterized in that; Be respectively equipped with first jack shaft (31) and second jack shaft (32) in the both sides of input shaft (1), on input shaft (1), be provided with initiatively gear and start clutch (70), on described first jack shaft (31) and second jack shaft (32), be respectively arranged with and be used for the driven gear that cooperates with said active gear; Said active gear is to be made up of four awl dishes that are arranged side by side; Wherein, The first awl dish (41) and the 4th awl dish (44) that are positioned at two ends are provided with in opposite directions and are fixed on the input shaft (1); Second awl dish (42) in the middle of being positioned at and third hand tap dish (43) are provided with dorsad and interfix and be slidingly connected with input shaft (1), between the first awl dish (41) and the second awl dish (42) and third hand tap dish (43) and the 4th awl dish (44), form broad-adjustable first trough of belt (51) and second trough of belt (52) respectively; Said driven gear is to be made up of two awl dishes that are provided with in opposite directions and are fixed on the corresponding jack shaft, the 3rd trough of belt (53) and the four-tape groove (54) of each self-forming fixed width between the 5th awl dish (45) on first jack shaft (31) and the 7th awl dish (47) on the 6th awl dish (46) and second jack shaft (32) and the 8th awl dish (48); At first metal tape (61) and second metal tape (62) that are provided with annular corresponding between the 3rd trough of belt (53) and second trough of belt (52) and between four-tape groove (54) and first trough of belt (51); Said first metal tape (61) and second metal tape (62) homogeneous end are enclosed within on the input shaft (1), and the other end is enclosed within respectively on the corresponding jack shaft; First free wheel device (71), first grade of gear (81) and third gear gear (83) also are installed on first jack shaft (31); Second free wheel device (72) and second grade of gear (82) are installed on second jack shaft (32); Described three shelves gears respectively have a synchronizer; Described three shelves gears are meshed with being located at last corresponding first grade of output gear (91), second grade of output gear (92) or the third gear output gear (93) of output shaft (2) respectively, and three output gears drive output shaft (2) respectively and rotate.
2. override type multistage stepless speed variator according to claim 1 is characterized in that, first grade of output gear (91), second grade of output gear (92) and third gear output gear (93) are arranged in order by diameter is descending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246378U CN202132463U (en) | 2011-07-13 | 2011-07-13 | Overrunning multi-stage stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246378U CN202132463U (en) | 2011-07-13 | 2011-07-13 | Overrunning multi-stage stepless speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132463U true CN202132463U (en) | 2012-02-01 |
Family
ID=45521230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120246378U Expired - Fee Related CN202132463U (en) | 2011-07-13 | 2011-07-13 | Overrunning multi-stage stepless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132463U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252076A (en) * | 2011-07-13 | 2011-11-23 | 重庆理工大学 | Double-metal-band multi-section continuously variable transmission |
| CN111465552A (en) * | 2017-05-22 | 2020-07-28 | 弗拉迪米尔·格里戈列维奇·冈查洛夫 | Speed variator for electric bicycle |
| CN113357323A (en) * | 2021-05-18 | 2021-09-07 | 璞灵(上海)汽车技术有限公司 | Centrifugal movable-tooth stepless speed changing box |
-
2011
- 2011-07-13 CN CN201120246378U patent/CN202132463U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252076A (en) * | 2011-07-13 | 2011-11-23 | 重庆理工大学 | Double-metal-band multi-section continuously variable transmission |
| CN102252076B (en) * | 2011-07-13 | 2015-11-18 | 重庆理工大学 | Bimetallic strip multi-stage stepless speed changer |
| CN111465552A (en) * | 2017-05-22 | 2020-07-28 | 弗拉迪米尔·格里戈列维奇·冈查洛夫 | Speed variator for electric bicycle |
| CN113357323A (en) * | 2021-05-18 | 2021-09-07 | 璞灵(上海)汽车技术有限公司 | Centrifugal movable-tooth stepless speed changing box |
| CN113357323B (en) * | 2021-05-18 | 2022-06-07 | 璞灵(上海)汽车技术有限公司 | Centrifugal movable-tooth stepless speed changing box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101713459B (en) | Double clutch type automatic gearbox | |
| CN103807413B (en) | mechanical transmission | |
| US9791028B2 (en) | Multi-range CVT | |
| CN101526123B (en) | Car complex transmission double-clutch transmission | |
| CN201827306U (en) | Double-clutch type automatic transmission | |
| CN104595450A (en) | Automatic two-gear transformer for pure electric automobile | |
| CN102720809B (en) | A kind of speed changer and comprise the vehicle of this speed changer | |
| CN202132463U (en) | Overrunning multi-stage stepless speed changer | |
| CN109780143A (en) | A kind of automobile front drive Duo Dang continuous change mechanism | |
| CN102230525B (en) | Driving belt stepless transmission with increased transmission torque and gear ratio | |
| CN100383433C (en) | Dual-belt or dual-chain drive synchronizing device | |
| CN103453103A (en) | Step transition type stepless speed changer | |
| CN103470703B (en) | There is the speed changer of parallel planetary gear train | |
| CN203258048U (en) | Stepless dual-clutch transmission and automobile with same | |
| CN202012600U (en) | Multistage type metal tape stepless speed variator | |
| CN101737462A (en) | double-clutch transmission mechanism | |
| CN105202128A (en) | Tri-clutch transmission for vehicle | |
| CN102252076B (en) | Bimetallic strip multi-stage stepless speed changer | |
| CN103410943A (en) | Hybrid speed changing device combining fixed-shaft gear transmission and belt-type stepless transmission | |
| CN103542074B (en) | Gear-combined type variable speed drive | |
| CN201407326Y (en) | Automotive composite driving double-clutch transmission | |
| CN103527736B (en) | There is a grade transition type variable transmission scheme | |
| CN203488646U (en) | Speed changer with parallelly-connected planetary gear train | |
| CN103939533A (en) | Gear combined variable-speed transmission device with multiple clutches | |
| CN103267089A (en) | Multi-clutch type variable transmission device |
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: 20120201 Termination date: 20120713 |