CN202001562U - DCT (double-clutch transmission) comprising one-way clutches - Google Patents
DCT (double-clutch transmission) comprising one-way clutches Download PDFInfo
- Publication number
- CN202001562U CN202001562U CN2011201336064U CN201120133606U CN202001562U CN 202001562 U CN202001562 U CN 202001562U CN 2011201336064 U CN2011201336064 U CN 2011201336064U CN 201120133606 U CN201120133606 U CN 201120133606U CN 202001562 U CN202001562 U CN 202001562U
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- Prior art keywords
- clutch
- gear
- shaft
- input
- retaining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/10—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The utility model discloses a DCT (double-clutch transmission) comprising one-way clutches, which comprises two starting clutches, two input shafts, two middle shafts, an output shaft and two one-way clutches. Driving gears of all gear positions are disposed on a first middle shaft and a second middle shaft, the output shaft is provided with driven gears meshed with the driving gears of all gear positions, a first one-way clutch is disposed on a first input shaft and is inlaid in a first input gear or positioned between a first starting clutch and the first input gear, and a second one-way clutch is disposed on the second input shaft and is inlaid in a second input gear or positioned between a second starting clutch and the second input gear. When used for shifting gear, the transmission is speedy and stable in power switching and avoids torque interference due to the one-way clutches, not only can eliminate interference and impact during gear shifting, but also can guarantee uninterrupted power, complication degree of control of the double clutches is reduced, a gear shifting procedure is more stable, and a product is more durable.
Description
Technical field
The utility model relates to a kind of double-clutch automatic gearbox (DCT).
Background technique
Dual-clutch transmission with the shift transformation that almost do not have tractive force and interrupt as the manual transmission of motor vehicle and known and obtained proof.The shift process that no tractive force interrupts has been avoided load conversion and velocity disturbance, thereby realizes the more comfortable rideability and the acceleration capabilities of improvement.
But with regard to existing dual-clutch transmission, dual-clutch transmission is cut off for fear of shift process power in shift process, realizes smooth-going gearshift, then two clutches transmitting torque simultaneously just will inevitably appear in double clutch in handoff procedure, promptly produces the overlapping phenomenon that moment of torsion transmits.If the control of the overlapping phenomenon of this moment of torsion is improper in handoff procedure, then might cause two interlocking interference and shift impact between the gear, make transmission system produce bigger dynamic load, cause phenomenons such as clutch slipping, self-excited vibration, transmission system impact, cause the friction plate temperature to raise, produce distortion even ablative degradation, directly influence separation, engagement characteristics and the life-span of clutch.If rationally control this moment of torsion overlapping phenomenon in the handoff procedure, just must add complicated control system, this has increased the difficulty of dual-clutch transmission on utilization is promoted undoubtedly, the working procedure of easy rational control dual-clutch transmission how, the emphasis and the difficult point of double-clutch speed changer Application and Development at present just.
The model utility content
At deficiency of the prior art, the utility model provides a kind of and has avoided dual-clutch transmission moment of torsion to occur in shift process transmitting interference phenomenon when overlapping, reduce the DCT that dual-clutch transmission is controlled the employing overrunning clutch of difficulty in the course of the work.Interference and impact when the DCT of employing overrunning clutch not only can eliminate gearshift can guarantee that again power is not cut off simultaneously, the more important thing is and reduced the control complexity of double clutch in the prior art that make shift process more steady, product is more durable.
A kind of DCT that adopts overrunning clutch that the utility model provides comprises that the first input gear, the second input gear, first start clutch, second and start clutch, first input shaft, second input shaft, first jack shaft, second jack shaft, output shaft and reverse gear shaft; Described first jack shaft and second jack shaft are provided with the driving gear of each gear, and output shaft is provided with the driven gear that is meshed with each gear driving gear, and reverse gear shaft is provided with reverse idler gear; It is characterized in that: also comprise first overrunning clutch and second overrunning clutch; First overrunning clutch be arranged on first input shaft and be embedded in the first input gear or first start clutch and and the first input gear between; Second overrunning clutch is arranged on second input shaft and is embedded in the second input gear or second and starts between the clutch and the second input gear.
The DCT of employing overrunning clutch of the present utility model compared with prior art has following advantage:
1, the utility model is provided with overrunning clutch respectively between the nearest driving gear on two startup clutches and corresponding input shaft, when gearshift, only need the cohesive process of a startup clutch of control, another starts clutch only after powershift is finished, no longer its separation is got final product during transmitting torque, in the powershift process, be in complete bonding state always, because the existence of overrunning clutch, the powershift quick and stable, moment of torsion can not take place interfere, the control difficulty compared with prior art greatly reduces.
2, the DCT of employing overrunning clutch of the present utility model has avoided occurring moment of torsion and has transmitted interference phenomenon when overlapping in shift process, reduces dual-clutch transmission control difficulty in the course of the work; And not only can eliminate the interference and the impact in when gearshift, and can guarantee that again power is not cut off, make shift process more steady, product is more durable.
3, the utility model only needs the speed changer of conventional construction is slightly made improvements, and promptly can realize a kind of DCT of employing overrunning clutch with low cost, has good controlled and stable.
4, the DCT of employing overrunning clutch of the present utility model does not adopt the structure of original coaxial-type double-clutch speed changer, and adopted the layout of two input shafts up and down, therefore, reduced original coaxial-type dual-clutch transmission to the requirement of input shaft at aspects such as rigidity, this will help the technology upgrading of state internal clutch manufacturer, so the utility model has been realized a kind of dual-clutch transmission of being convenient to control.
5, for wet clutch DCT, by the effect of overrunning clutch, the band in the time of can reducing throw-out-of clutch is arranged moment of torsion, thereby further reduces the oil consumption of motor.
Description of drawings
Fig. 1 is a kind of preposition structural representation that the retaining of five on the motor vehicle adopts the DCT of overrunning clutch that laterally is installed in that is used for.
In the accompanying drawing: C1-first starts clutch; C2-second starts clutch; F1-first overrunning clutch; F2-second overrunning clutch; 1-the second input gear; 2-motor output gear; 3 first input gears; 4 first input shafts; 5-the first jack shaft; 6-five retaining driving gears; 7-three retaining driving gears; 8-two retaining output gears; 9-the second synchronizer; 10-four retaining output gears; 11-one retaining driving gear; 12-one retaining output gear; 13-output gear reverses gear; 14-output shaft; 15-the three synchronizer; 16-the second jack shaft; 17-driving gear reverses gear; 18-reverse idler gear I; 19-reverse gear shaft; 20-reverse idler gear II; 21-four retaining driving gears; 22-two retaining driving gears; 23-three retaining output gears; 24-the first synchronizer; 25-five retaining output gears; 26-the second input shaft; 27-odd number retaining; 28-even number retaining.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Adopt the DCT of overrunning clutch, comprise that the first input gear 3, the second input gear 1, first start clutch C1, second and start clutch C2, first input shaft 4, second input shaft 26, first jack shaft 5, second jack shaft 16, output shaft 14, reverse gear shaft 19, the first overrunning clutch F1 and the second overrunning clutch F2.First jack shaft 5 and second jack shaft 16 are provided with the driving gear of each gear, and output shaft 14 is provided with the driven gear that is meshed with each gear driving gear, and reverse gear shaft 19 is provided with reverse idler gear.The first overrunning clutch F1 be arranged on first input shaft 4 and be embedded in the first input gear 3 or first start clutch C1 and and the first input gear 3 between; The second overrunning clutch F2 is arranged on second input shaft 26 and second and starts between the clutch C2 and the second input gear 1.
Fig. 1 is a kind of preposition structural representation that the retaining of five on the motor vehicle adopts the DCT of overrunning clutch that laterally is installed in that is used for, as shown in the figure.Adopt among the DCT of overrunning clutch at this, by the first startup clutch C1, the second startup clutch C2 of two wet types (or dry type), the double clutch that the first overrunning clutch F1, the second overrunning clutch F2 form.First input shaft 4 and second input shaft 26 are separately positioned on the both sides of motor output gear 2, and respectively by the second input gear 1 and the first input gear, 3 engagement drive transmitting moments of torsion.First input shaft 4 is passed to by the first overrunning clutch F1 and the impassioned moment of torsion of the first startup clutch C1 and sets gradually five retaining driving gears 6, three retaining driving gears 7 and a retaining driving gear 11 on first jack shaft, 5, the first jack shafts 5 from left to right; In like manner second jack shaft 16 is connected and transmitting torque with the second input arbor wheel 1 by identical mode, sets gradually two retaining driving gears 22, the four retaining driving gear 21 and the driving gears 17 that reverse gear on second jack shaft 16 from left to right; Set gradually five retaining output gears 25, first synchronizer 24, three retaining output gears 23, two retaining output gears 8, second synchronizer 9, four retaining output gears 10, retaining output gear 12, the 3rd synchronizer 15 on the output shaft 14 from left to right, output gear 13 reverses gear; Reverse gear shaft 19 is arranged between second jack shaft 16 and the output shaft 14, and the reverse idler gear I 18 and the reverse idler gear II 20 that are meshed with the reverse gear driving gear 17 and the output gear 13 that reverses gear respectively are set on the reverse gear shaft 19.Start clutch C1 according to first of wet type (or dry type) and drive first jack shaft 5, the second and start clutch C2 and drive second jack shaft 16, the startup clutch outer member of this double clutch with import gear and be connected.Thereby first input shaft 4 transfers a torque to first jack shaft 5 by the first startup clutch C1 and the first free wheel device F1 and drives one group of odd number gear (i.e. five retaining driving gears 6, three retaining driving gears 7 and a retaining driving gear 11), drives one group of even number gear (promptly two keeping off driving gears 22 and four retaining driving gears 21) thereby second input shaft 26 transfers a torque to second jack shaft 16 by the second startup clutch C2 and the second free wheel device F2.
At length narrate the power transmission of DCT on forward gear below according to employing overrunning clutch of the present utility model:
Rising two retainings with a retaining is example:
When the DCT that adopts overrunning clutch hangs a retaining, input shaft increases drive first jack shaft 5 rotating speeds with engine speed and constantly increases, before the rotating speed of first jack shaft arrives the shift speed of two retainings, it promptly is the mode that adopts block selecting in advance that second synchronizer 9 pushes two retaining output gear 8(, in advance synchronizer is pushed two retaining output gears), this moment, second synchronizer 9 and the 3rd synchronizer 15 all were bonding state, start clutch C2 this moment second is closed, the first overrunning clutch F1 is in the wedging state, transmitting torque, the first startup clutch C1 is a disengaged condition, and the first overrunning clutch F1 is transmitting torque not; When the needs speed changer switches to two retainings, second starts clutch C2 begins closure, start clutch C2 second and enter the sliding wear state, when the slip at its two ends is reduced to a certain numerical value, the second overrunning clutch F2 enters the wedging state, second starts the beginning transmitting portions moment of torsion of clutch C2, at this moment, the first overrunning clutch F1 and the second overrunning clutch F2 are in the wedging state, and first starts clutch C1 and second starts clutch C2 transmitting torque simultaneously, along with the closure gradually of the first startup clutch C2, the moment of torsion of its transmission increases gradually, and first moment of torsion that starts clutch C1 transmission reduces gradually, and is last, is transformed into moment of torsion and all starts clutch C1 transmission by first, at this moment, second starts clutch C2 also still is in the sliding wear state, and first starts still combination fully of clutch C1, but transmitting torque not; Along with being further closed of the second startup clutch C2, second slip that starts clutch C2 two ends further reduces, the rotating speed of second jack shaft 16 moves closer to the rotating speed of second input shaft 26, and since this moment first synchronizer 24 do not throw off, second jack shaft, 16 rotating speeds are higher than the rotating speed of first input shaft 4 thereupon gradually, and the first overrunning clutch F1 enters disengaged position; At last, first starts clutch C1 end sliding wear enters complete bonding state, and powershift is all finished; At this moment, make first to start clutch C1 separation, and first synchronizer 24 is thrown off, gearshift is finished.
In above-mentioned shift process, only need the cohesive process of a startup clutch of control, another starts clutch only after powershift is finished, no longer its separation is got final product during transmitting torque, in the powershift process, be in complete bonding state always, since the existence of overrunning clutch, the powershift quick and stable, moment of torsion can not take place interfere, the control difficulty compared with prior art greatly reduces.
In like manner, it is consistent with above-mentioned principle that two retainings rise three retainings, three retaining liters, four retainings, four retainings rise five its principles of retaining.
Falling four retainings with five retainings is example:
When automobile travels with five retainings, the DCT that adopts overrunning clutch is with five retaining work, before input shaft speed is reduced to four retaining shift speed, it promptly is the mode that adopts block selecting in advance that second synchronizer 9 pushes four retaining output gear 10(, in advance synchronizer is allocated to four retaining output gears), this moment, first synchronizer 24 and second synchronizer 9 all were closed state, at this moment, make second to start clutch C2 closure fully, because second jack shaft, 16 rotating speeds are higher than second input shaft, 26 rotating speeds, therefore the second overrunning clutch F2 still is in disengaged position, though second start the closed not transmitting torque of clutch C2, the power of system remains and starts clutch C1 by first and transmit.When rotating speed reaches shift speed, first starts clutch C1 begins to separate, first starts that clutch C1 separates gradually and when entering the sliding wear state, the rotating speed of first jack shaft 5 and second jack shaft 16 reduces gradually, simultaneously, input shaft increases owing to the load reduction rotating speed, when second jack shaft, 16 speed drops to second start clutch C2 when synchronous, the second overrunning clutch F2 enters the wedging state, beginning transmitting portions moment of torsion, at this moment, the first overrunning clutch F1 and the second overrunning clutch F2 are in the wedging state, the first overrunning clutch F1 and the second overrunning clutch F2 be transmitting torque simultaneously, separation gradually along with the first startup clutch C1, the moment of torsion of its transmission reduces gradually, and increase gradually by second moment of torsion that starts clutch C2 and second overrunning clutch F2 transmission, at last, be transformed into moment of torsion and all start clutch C2 and second overrunning clutch F2 transmission by second, at this moment, first starts clutch C1 transmitting torque not, it is separated fully, and first synchronizer 24 is thrown off, gearshift is finished.
In above-mentioned shift process, only need the separation process of a startup clutch of control, another starts clutch is before powershift, also do not carry out making it in conjunction with getting final product when moment of torsion transmits, be in complete bonding state in the powershift process, because the existence of overrunning clutch, moment of torsion can not take place powershift interferes, the shift process quick and stable, the control difficulty compared with prior art greatly reduces.
In like manner, four the retaining fall three the retaining, three the retaining fall two the retaining, two the retaining fall one the retaining its principle consistent with above-mentioned principle.
The first overrunning clutch F1 and the second overrunning clutch F2 can have lockable mechanism, the anti-motor that drags when being used to brake.
Certainly, adopt the structure of the DCT of overrunning clutch to be not limited to structure shown in Figure 1 (Fig. 1 adopts two middle shaft types to arrange), also can adopt one-way clutch speed changer structure as shown in Figure 2 to realize, be retaining 27 of the odd number in original speed changer and even number retaining 28 are separately positioned in two casings with the difference of Fig. 1, and it is the position of free wheel device is separately positioned on the output shaft of two speed changers, but the same with the working principle of the one-way clutch speed changer shown in Fig. 1.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (1)
1. a DCT who adopts overrunning clutch comprises that the first input gear (3), the second input gear (1), first start clutch (C1), second and start clutch (C2), first input shaft (4), second input shaft (26), first jack shaft (5), second jack shaft (16), output shaft (14) and reverse gear shaft (19); Described first jack shaft (5) and second jack shaft (16) are provided with the driving gear of each gear, and output shaft (14) is provided with the driven gear that is meshed with each gear driving gear, and reverse gear shaft (19) is provided with reverse idler gear; It is characterized in that: also comprise first overrunning clutch (F1) and second overrunning clutch (F2); First overrunning clutch (F1) is arranged on first input shaft (4) and goes up and be embedded in the first input gear (3) or be positioned at first and start clutch (C1) and first and import between the gear (3); Second overrunning clutch (F2) is arranged on second input shaft (26) and goes up and be embedded in the second input gear (1) or be positioned at second and start clutch (C2) and second and import between the gear (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201336064U CN202001562U (en) | 2011-04-29 | 2011-04-29 | DCT (double-clutch transmission) comprising one-way clutches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201336064U CN202001562U (en) | 2011-04-29 | 2011-04-29 | DCT (double-clutch transmission) comprising one-way clutches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001562U true CN202001562U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201336064U Expired - Fee Related CN202001562U (en) | 2011-04-29 | 2011-04-29 | DCT (double-clutch transmission) comprising one-way clutches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001562U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782363A (en) * | 2014-12-26 | 2016-07-20 | 韩奎义 | Multisource transmission |
| CN108189663A (en) * | 2017-12-11 | 2018-06-22 | 江苏大学 | A kind of power maintenance automatic speed changer for machine hybrid drive train |
| CN112524210A (en) * | 2021-02-08 | 2021-03-19 | 万鑫精工(湖南)股份有限公司 | Speed reducer for crane and crane |
| 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
- 2011-04-29 CN CN2011201336064U patent/CN202001562U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782363A (en) * | 2014-12-26 | 2016-07-20 | 韩奎义 | Multisource transmission |
| CN108189663A (en) * | 2017-12-11 | 2018-06-22 | 江苏大学 | A kind of power maintenance automatic speed changer for machine hybrid drive train |
| CN112524210A (en) * | 2021-02-08 | 2021-03-19 | 万鑫精工(湖南)股份有限公司 | Speed reducer for crane and crane |
| WO2022166992A1 (en) * | 2021-02-08 | 2022-08-11 | 万鑫精工(湖南)股份有限公司 | Speed reducer for crane and crane |
| 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 |
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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: 20111005 Termination date: 20120429 |