CN102777555B - Continuous power infinitely variable speed transmission mechanism - Google Patents
Continuous power infinitely variable speed transmission mechanism Download PDFInfo
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- CN102777555B CN102777555B CN201210285821.5A CN201210285821A CN102777555B CN 102777555 B CN102777555 B CN 102777555B CN 201210285821 A CN201210285821 A CN 201210285821A CN 102777555 B CN102777555 B CN 102777555B
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Abstract
The invention discloses a continuous power infinitely variable speed transmission mechanism, which comprises a reverse synchronous gear and a positive synchronous gear which are respectively in gear engagement with a power keeping input shaft, a first planetary gear train and a second planetary gear train which are connected through a speed-regulating power input shaft, and a transmission gear engaged with an output shaft keeping gear, wherein a bidirectional synchronizing clutch is arranged between the reverse synchronous gear and the positive synchronous gear and is connected to the second planetary gear train through the clutch; and the transmission gear is connected with the first planetary gear train through an output switching clutch and is connected with the second planetary gear train through a second internal gear. The full-range infinitely variable speed of the output shaft from the reverse maximum speed to the positive maximum speed can be realized by means of the speed change of the speed-regulating power input shaft and the engagement and disengagement of the clutch only under the condition that the rotating speed and the rotating direction of the power keeping input shaft, the output speed is stably changed and no power is interrupted in the whole process. The variable speed in the reverse direction is performed in the same mode.
Description
Technical field
The present invention relates to driving mechanism, specifically a kind of continuous power infinitely variable speed gearing for wheel machine.
Background technique
Gear-driven feature is that velocity ratio is fixed, if make output element have larger slewing range often to need to design the gearbox comprising multiple velocity ratio.When gear switch, due to the nonsynchronous reason of element speeds, two gears can not transferring power simultaneously, needs first to throw off rear engagement, causes the interruption of outputting power.Same due to speed nonsynchronous reason, gear shift can cause mechanical shock, impacts, need more velocity ratio, manipulation can be made so again more complicated if reduce.
On wheel machine, fluid torque converter and the hand shift gear-box of adopting as walking speed-regulating device more at present.Although fluid torque converter can absorb shifting shock well, its working efficiency is lower, especially when traveling gear is in the large torque conditions of the slow-speed of revolution.Power interruption during gear shift also has a significant impact the operation of wheel machine on ramp.
For gear graduation technical field, especially to running mechanism actuation techniques field, mechanical shock when solving gear shift and power interruption are for raising device operability, steadily travelling comfort and to reduce energy consumption all very necessary.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the continuous power infinitely variable speed gearing of above-mentioned disappearance.
Summary of the invention
The object of the present invention is to provide a kind of power infinitely variable speed gearing continuously, when the rotational velocity of continuous driving force input shaft and sense of rotation all remain unchanged, only lean on the velocity variations of speed governing power input shaft and the clutch of clutch just can realize output shaft from reverse top speed to the omnidistance stepless change of forward top speed, whole the output of process velocity variations is steady, power failure-free.Speed change is as the same in the other direction.
In order to reach above-mentioned purpose, present invention employs following technological scheme, a kind of power infinitely variable speed gearing continuously, the first planet train comprise and keeps the reverse sync gear of gears meshing and forward synchromesh gear respectively with continuous driving force input shaft, being connected by speed governing power input shaft and the second planetary gear train, and output shaft keep the driving gear of gears meshing; Be provided with bi-directional synchronization clutch between described reverse sync gear and forward synchromesh gear and be connected to the second planetary gear train by this clutch, described driving gear is connected with first planet train by output switching clutch on the one hand, is connected on the other hand by secondary annulus with the second planetary gear train.
Described first planet train and the second planetary gear train include sun gear, planet carrier and internal gear, and the shared sun wheel shaft of two cover planetary gear train is as speed governing power input shaft.
Internal gear in described first planet train i.e. the first internal gear is fixing design, and the internal gear in described second planetary gear train and secondary annulus are fixedly connected with driving gear.
The described bi-directional synchronization clutch being used for throwing off with forward and reverse synchromesh gear or combine is connected on planet carrier i.e. second planet carrier of the second planetary gear train; In the planet carrier that the described output switching clutch being used for throwing off with driving gear or combine is connected to first planet train and the first row carrier.
Described reverse sync gear keeps gears meshing by tumbler gear and continuous driving force input shaft.
Described reverse sync gear and forward synchromesh gear all keep gears meshing with fixed speed ratio and continuous driving force input shaft; Gears meshing is kept with fixed speed ratio between described driving gear output shaft.
Compared to prior art, the present invention has following beneficial effect:
The present invention makes full use of the characteristic of Gear Planet Transmission, at the different planetary mechanism element drives output shaft of different gear shift stages, the speed of speed governing power input shaft is raised or reduces the rising all causing output shaft speed, and second cover planetary mechanism speed change be for starting point with the terminal of first set planetary mechanism slewing range, achieve the cumulative of slewing range, make the speed regulation capacity of speed governing power input element obtain maximum performance.Meanwhile, the second planet carrier is provided with a bi-directional synchronization clutch, not only ensure that the nothing impact of two cover planetary mechanisms and the switching of power failure-free, forward and reverse output of speed changer also can be made to have slewing range large equally.
No matter be that output shaft rotates forward or counterrotating, two-way respectively have a specific velocity node, and this two node is the interface point of first set planetary gear train and the second cover planetary gear train slewing range.On node, bi-directional synchronization clutch during speedup on the second planet carrier and forward or backwards synchromesh gear speed sync; Powershift clutch during deceleration in the first row carrier is synchronous with transmission gear speeds.Due to clutch two rotating part speed sync, can first the clutch being about to a set of planetary mechanism of the work of entering be combined, then by the throw-out-of clutch of the another set of planetary mechanism by disengaging work.Ensure that the power of mechanical gear shift process is continuous, and without impact.
Accompanying drawing explanation
Fig. 1 is the structure driven schematic diagram of a kind of continuous power infinitely variable speed gearing of the present invention;
Fig. 2 is output line speed and the element speeds graph of a relation of a kind of continuous power infinitely variable speed gearing of the present invention.
In figure: 1, reverse sync gear; 2, bi-directional synchronization clutch; 3, forward synchromesh gear; 4, second planet carrier; 5, secondary annulus; 6, output shaft; 7, the first row carrier; 8, speed governing power input shaft; 9, first internal gear; 10, output switching clutch; 11, driving gear; 12, continuous driving force input shaft; 13, tumbler gear.
Embodiment
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the present invention.
According to Fig. 1-Fig. 2, a kind of power infinitely variable speed gearing continuously, the first planet train comprise and keep the reverse sync gear 1 of gears meshing and forward synchromesh gear 3 respectively with continuous driving force input shaft 12, being connected by speed governing power input shaft 8 and the second planetary gear train, keeps the driving gear 11 of gears meshing with output shaft 6; Be provided with bi-directional synchronization clutch 2 between described reverse sync gear and forward synchromesh gear and be connected to the second planetary gear train by this clutch, described driving gear is connected with first planet train by output switching clutch 10 on the one hand, is connected on the other hand by secondary annulus 5 with the second planetary gear train.Described reverse sync gear 1 keeps gears meshing by tumbler gear 13 and continuous driving force input shaft 12.
First planet train and the second planetary gear train include sun gear, planet carrier and internal gear, and the shared sun wheel shaft of two cover planetary gear train is as speed governing power input shaft 8.Internal gear in first planet train i.e. the first internal gear 9 is fixing design, and the internal gear in described second planetary gear train and secondary annulus 5 are fixedly connected with driving gear 11.The bi-directional synchronization clutch being used for throwing off with forward and reverse synchromesh gear or combine is connected on planet carrier i.e. second planet carrier of the second planetary gear train; In the planet carrier that the described output switching clutch being used for throwing off with driving gear or combine is connected to first planet train and the first row carrier.Reverse sync gear and forward synchromesh gear all keep gears meshing with fixed speed ratio and continuous driving force input shaft; Gears meshing is kept with fixed speed ratio between described driving gear output shaft.
As shown in Figure 1, if continuous driving force input shaft 12 counterclockwise rotates; Initial state speed governing power input shaft 8 rotating speed is zero, and bi-directional synchronization clutch 2 and output switching clutch 10 are all in disengaged condition, and under this state, output shaft 6 rotating speed is zero.
Above-mentioned rotary speed direction sees from right to left according to Fig. 1, lower same; If be counterclockwise forward.
1, if make output gear shaft 6 forward speedup, process is as follows:
1.1, output switching clutch 10 closes, and first planet train enters working state;
1.2, oppositely increase the rotating speed of speed governing power input shaft 8;
1.3, because the first internal gear 9 is fixed, speed governing power input shaft 8 can drive the first row carrier 7 oppositely speedup; Because input switch clutch is closed, driving gear 11 and secondary annulus 5 are also along with the first row carrier 7 oppositely speedup; Driving gear 11 driver output axle 6 forward speedup;
1.4, secondary annulus 5 and speed governing power input shaft 8 drive the second planet carrier 4 oppositely speedup jointly simultaneously;
1.5, when the second planet carrier 4 speed increases to synchronous with forward synchromesh gear 3, first bi-directional synchronization clutch 2 is combined with forward synchromesh gear 3, then output switching clutch 10 is thrown off.Now mechanical gear shift completes, and first planet train departs from working state, and the second planetary gear train enters working state.Export without interrupting at this gearshift procedure medium power.
1.6, reduce speed governing power input shaft 8 rotating speed to zero and continue speedup again to forward maximum (top) speed, in this process, secondary annulus 5 and driving gear 11 continue reverse speedup, thus driver output axle 6 continues forward speedup.
2, if make output shaft 6 slow down, its process is contrary with process 1.The main points in mechanical gear shift stage are: first closed output switching clutch 10, then throw off bi-directional synchronization clutch 2.
3, the reverse speedup of output shaft is substantially identical with process 1 and 2 with the process of reduction of speed, just the rotary speed direction of speed governing power input shaft 8 is contrary with its rotary speed direction in respective process, and in mechanical gear shift process, bi-directional synchronization clutch 2 will combine with reverse sync gear 1 or throw off.
Fig. 2 has showed the corresponding relation between the rotational speed of each primary component in speed-change process and output speed.Horizontal ordinate: output line speed; Ordinate: transmission element rotating speed.101 is the corresponding relation line of speed governing power input shaft 8, and 102 is the corresponding relation line of the first row carrier 7, and 103 is the corresponding relation line of output shaft 6, and 104 is the corresponding relation line of the second planet carrier 4, and 105 is the corresponding relation line of secondary annulus 5.
Two epicyclic trains work in different slewing ranges.In low-speed range, speed changer is driven separately by speed governing power input shaft; In high-speed range, speed changer is driven jointly by continuous driving force input shaft and speed governing power input shaft.On certain velocity node, two planetary gear train switch, the common driver output axle of two planetary gear train on switching point.This type of belt drive according to engine-driving continuous driving force input shaft, fluid motor-driven speed governing power input shaft, is then highly suitable for the hoofing part of wheel machine.
The foregoing is only preferred embodiment of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (1)
1. a continuous power infinitely variable speed gearing, it is characterized in that, the first planet train comprise and keep the reverse sync gear of gears meshing and forward synchromesh gear respectively with continuous driving force input shaft, being connected by speed governing power input shaft and the second planetary gear train, keep the driving gear of gears meshing with output shaft; Be provided with bi-directional synchronization clutch between described reverse sync gear and forward synchromesh gear and be connected to the second planetary gear train by this clutch, described driving gear is connected with first planet train by output switching clutch on the one hand, be connected with the second planetary gear train by secondary annulus on the other hand, described second planetary gear train comprises sun gear, planet carrier and internal gear, and the internal gear in described second planetary gear train and secondary annulus are fixedly connected with driving gear.
2. the continuous power infinitely variable speed gearing of one according to claim 1, it is characterized in that, described first planet train comprises sun gear, planet carrier and internal gear, and the shared sun wheel shaft of first planet train and the second planetary gear train is as speed governing power input shaft.
3. the continuous power infinitely variable speed gearing of one according to claim 2, is characterized in that, the internal gear in described first planet train i.e. the first internal gear is fixing design.
4. the continuous power infinitely variable speed gearing of one according to claim 2, is characterized in that, described in be used for throwing off with forward and reverse synchromesh gear or combine bi-directional synchronization clutch be connected on planet carrier i.e. second planet carrier of the second planetary gear train; In the planet carrier that the described output switching clutch being used for throwing off with driving gear or combine is connected to first planet train and the first row carrier.
5. the continuous power infinitely variable speed gearing of one according to claim 1, is characterized in that, described reverse sync gear keeps gears meshing by tumbler gear and continuous driving force input shaft.
6. the continuous power infinitely variable speed gearing of one according to claim 1, is characterized in that, described reverse sync gear and forward synchromesh gear all keep gears meshing with fixed speed ratio and continuous driving force input shaft; Gears meshing is kept with fixed speed ratio between described driving gear output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285821.5A CN102777555B (en) | 2012-08-13 | 2012-08-13 | Continuous power infinitely variable speed transmission mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285821.5A CN102777555B (en) | 2012-08-13 | 2012-08-13 | Continuous power infinitely variable speed transmission mechanism |
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| CN102777555A CN102777555A (en) | 2012-11-14 |
| CN102777555B true CN102777555B (en) | 2015-04-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075475A (en) * | 2013-01-19 | 2013-05-01 | 龙宏元 | Planetary series stepless transmission for controlling rotating speed of controlled transmission path |
| CN103486207B (en) * | 2013-03-12 | 2015-12-23 | 山东常林机械集团股份有限公司 | A kind of power infinitely variable speed gearing continuously |
| CN110657201B (en) * | 2018-06-29 | 2022-03-18 | 比亚迪股份有限公司 | Transmission, power driving system and vehicle |
| CN110657203B (en) * | 2018-06-29 | 2022-02-08 | 比亚迪股份有限公司 | Transmission, power driving system and vehicle |
| CN113879115A (en) * | 2021-11-03 | 2022-01-04 | 上海馨联动力系统有限公司 | Electrically driven power transmission device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255915A (en) * | 2008-04-03 | 2008-09-03 | 常林股份有限公司 | Transmission mechanism of integral power shift hydraulic transmission for engineering machinery |
| CN202746512U (en) * | 2012-08-13 | 2013-02-20 | 山东常林机械集团股份有限公司 | Continuous power stepless speed-changing transmission mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100240547B1 (en) * | 1996-11-20 | 2000-03-02 | 최태수 | Continuously variable transmission |
| JP4637632B2 (en) * | 2005-03-31 | 2011-02-23 | 株式会社エクォス・リサーチ | Continuously variable transmission |
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- 2012-08-13 CN CN201210285821.5A patent/CN102777555B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255915A (en) * | 2008-04-03 | 2008-09-03 | 常林股份有限公司 | Transmission mechanism of integral power shift hydraulic transmission for engineering machinery |
| CN202746512U (en) * | 2012-08-13 | 2013-02-20 | 山东常林机械集团股份有限公司 | Continuous power stepless speed-changing transmission mechanism |
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