CN105465291A - Mixed-speed-ratio transmission - Google Patents
Mixed-speed-ratio transmission Download PDFInfo
- Publication number
- CN105465291A CN105465291A CN201610066278.8A CN201610066278A CN105465291A CN 105465291 A CN105465291 A CN 105465291A CN 201610066278 A CN201610066278 A CN 201610066278A CN 105465291 A CN105465291 A CN 105465291A
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- China
- Prior art keywords
- input shaft
- power
- differential mechanism
- power input
- pto
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Classifications
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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
- F16H3/087—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 characterised by the disposition of the gears
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/033—Series gearboxes, e.g. gearboxes based on the same design being available in different sizes or gearboxes using a combination of several standardised units
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/033—Series gearboxes, e.g. gearboxes based on the same design being available in different sizes or gearboxes using a combination of several standardised units
- F16H2057/0335—Series transmissions of modular design, e.g. providing for different transmission ratios or power ranges
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Retarders (AREA)
Abstract
The invention discloses a mixed-speed-ratio transmission. The mixed-speed-ratio transmission comprises a first-stage differential mechanism, a second-stage differential mechanism, a reducer and a brake. The first-stage differential mechanism is normally assembled, and two half shafts serve as output shafts, namely, the first power output shaft and the second power output shaft. Two original output half shafts of the second-stage differential mechanism serve as power input shafts, namely, the first power input shaft and the second power input shaft, a driven bevel gear of the second-stage differential mechanism serves as a power output gear, and an original independent input shaft serves as a power output shaft. The first power output shaft is in linkage and transmission with the first power input shaft. The second power output shaft is in linkage with a reducer input shaft, a reducer output shaft is in linkage with the second power input shaft, and the brake is arranged at the linkage section of the reducer output shaft and the second power input shaft. According to the technical scheme, the mixed-speed-ratio transmission is designed based on the minimum energy consumption principle, and stepless speed changing is achieved finally by utilizing the equilibrium torque characteristic of the differential mechanisms and combining the reducer and the brake.
Description
Technical field
The present invention relates to stepless speed changes devices, particularly one realizes infinite variable speed mixing rotating ratio speed changer by gear structure.
Background technique
Electrodeless parameter device conventional is at present CVT gearbox, and this gearbox exists following short slab:
As uninterrupted transmission means continuously, CVT is more reasonable than classification fixed gear transmission gearbox, but existing CVT because do not have gear, is carried out circulation way efficiency will be caused to reduce by contacting of steel band (chain) and driving wheel and follower " stiction ".Following particular problem is there is in transmitting procedure:
(1) steel band (chain) slides
Steel band by driving wheel to follower transfer of torque time, first output shaft needs moment of torsion to be delivered on steel band, then by steel band torque transfer to follower, follower passes to wheel by output shaft moment of torsion again.In this process, steel band and driving wheel, follower are all surface contact, and for " skidding " situation, to provide structure basic; The lubricant oil having some in addition exactly in parameter case is due to lubrication and heat radiation, although the lubricant oil frictional force used is comparatively large, lubricant oil is conducive to producing " slip " after all.
(2) steel band overtension
The steel band tension force of CVT is very crucial factor: slightly pine a bit can be increased the weight of skidding, even cannot be transmitted power, and the slightly tight running resistance that a bit may cause again increases, can reduce efficiency of transmission equally.Everybody can think that the problem that CVT gearbox easily generates heat when high speed is that steel band and two wheel frictions cause usually, and in fact, the tension that steel band stretches tight also can cause wheel operationally to produce more heat.
Steel band overtension not only can lose certain power and reduce efficiency of transmission, also can heat be become to be collected at formation temperature in gearbox kinetic energy and rise.
(3) existing steel band transmission bearer power is limited
Current CVT is mainly used in small-power power assembly, and one of reason is exactly this transmission means power that can carry is limited.300 Ns of rice have been accomplished the carrying power of CVT by some enterprises, considerably increase the coverage rate of power; In general, continue the difficulty of raising power carrying by increasing, cost of production also can significantly improve.
These problems above-mentioned are all adopt gear transmission evitable, and gear structure does not have a kind of electrodeless parameter structure of efficient stable at present.
Summary of the invention
The present invention is directed to above-mentioned technical problem, propose one and realize infinite variable speed mixing rotating ratio speed changer by gear structure.
For reaching above object, be achieved through the following technical solutions:
A kind of mixing rotating ratio speed changer, comprising: first order differential mechanism, second level differential mechanism, retarder and break;
Wherein, first order differential mechanism is normal assembling, and two semiaxis, as output shaft, are respectively the first pto＝power take-off and the second pto＝power take-off;
Second level differential mechanism, using original two output axle shafts as power input shaft, is respectively the first power input shaft and the second power input shaft, and using the driven wheel of differential of this differential mechanism as power output gear, original separate input shaft is as pto＝power take-off;
First pto＝power take-off connects with the first power input shaft and is 1:1 transmission;
Second pto＝power take-off connects with reducer input shaft, and reducer output shaft connects with the second power input shaft, and is positioned at reducer output shaft and the second power input shaft connecting section is provided with break.
Adopt the present invention of technique scheme, first order differential mechanism is that power resources are divided into two-way, and a road is used for high speed specific output, and two tunnels are used for low speed specific output.The effect of second level differential mechanism is than the rotating speed obtaining needing admixed together by two-way friction speed.
First drive path is: the first pto＝power take-off and the first power input shaft place drive path;
Second drive path is: the second pto＝power take-off, retarder, break and the second power input shaft place drive path;
Wherein retarder is the retarder (selecting according to the actual requirements) of a fixed proportion;
The effect of break is that the torque in its path, place of increase is to reduce the Driving Torque in this path, utilize the function of differential mechanism balancing moment, torque is progressively transferred in another path, until to be braked device completely locked path, break place, torque is all transferred in a road, realizes the linear speed regulating process of speed changer bottom gear to top gear.Contrary by slow releasing break, the torque of the second drive path declines gradually, and a road torque also declines thereupon, until break discharges completely, torque is all exported by two tunnels, exports and obtains minimum speed ratio.
The job requirement of its break needs with reference to second level differential mechanism output terminal load.
As preferred structure, also comprise: be arranged at the continuous press pump in the first pto＝power take-off and the first power input shaft place approach axes and accumulator; Hydraulic brake selected by break;
Wherein, accumulator is provided with Safety valve and electric control valve;
Accumulator separate three pipelines respectively connecting brakes, continuous press pumps is communicated with the mechanical locking mechanism on retarder, the purpose of design of this structure is to avoid break to produce pressure release skidding when being in braking state for a long time.
The present invention, according to " minimum stream power " design, utilizes the characteristic of differential mechanism balancing moment and finally realizes stepless change in conjunction with retarder and break.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The present invention is totally 3 width accompanying drawings, wherein:
Theory structure schematic diagram when Fig. 1 is two-way mixing speed ratio of the present invention.
Fig. 2 is first order differential design schematic diagram of the present invention.
Theory structure schematic diagram when Fig. 3 is three tunnel mixing speed ratio of the present invention.
In figure: 1, first order differential mechanism, 1.1, the first pto＝power take-off, the 1.2, second pto＝power take-off, 2, second level differential mechanism, 2.1, the first power input shaft, 2.2, the second power input shaft, 3, retarder, 4, break, C, accumulator, Tg2, continuous press pump, F1, Safety valve, F2, electric control valve.
Embodiment
One mixing rotating ratio speed changer as depicted in figs. 1 and 2, comprising: first order differential mechanism 1, second level differential mechanism 2, retarder 3 and break 4;
Wherein, first order differential mechanism 1 is normal assembling, and two semiaxis, as output shaft, are respectively the first pto＝power take-off 1.1 and the second pto＝power take-off 1.2;
Second level differential mechanism 2 is using original two output axle shafts as power input shaft, be respectively the first power input shaft 2.1 and the second power input shaft 2.2, using the driven wheel of differential of this differential mechanism as power output gear, original separate input shaft is as pto＝power take-off;
First order differential mechanism 1 is identical differential mechanism with second level differential mechanism 2;
First pto＝power take-off 1.1 connects 1:1 transmission with the first power input shaft 2.1;
Second pto＝power take-off 1.2 connects with retarder 3 input shaft, reducer output shaft connects with the second power input shaft 2.2, and being positioned at reducer output shaft and the second power input shaft 2.2 connecting section is provided with break 4, reducer output shaft and the second power input shaft 2.2 can be the same axis and to design or two-axis synchronization rotates trim designs;
Adopt the present invention of technique scheme, first order differential mechanism 1 is that power resources are divided into two-way, and a road is used for high speed specific output, and two tunnels are used for low speed specific output; The effect of second level differential mechanism 2 is than the rotating speed obtaining needing admixed together by two-way friction speed.
First drive path is: the first pto＝power take-off 1.1 and the first power input shaft 2.1 place drive path;
Second drive path is: the second pto＝power take-off 1.2, retarder 3, break 4 and the second power input shaft 2.2 place drive path;
Wherein retarder is the retarder (selecting according to the actual requirements) of a fixed proportion;
The job requirement of its break 4 needs with reference to second level differential mechanism 2 output terminal load, because the load of second level differential mechanism 2 output terminal is after motion is got up (as automobile), required load will reduce, so just need to detect this load, then the working state of real-time regulating brake 4;
As preferred structure, also comprise: be arranged at the continuous press pump Tg2 in the first pto＝power take-off 1.1 and the first power input shaft 2.1 place approach axes and accumulator C; Hydraulic brake selected by break 4;
Wherein, accumulator C is provided with Safety valve F1 and electric control valve F2;
Accumulator C separates three pipelines, and connecting brake 4, continuous press pump Tg2 are communicated with the mechanical locking mechanism on retarder respectively;
When break 4 is when being in braking state for a long time, pressure release can be produced skid, propose further solution: as shown in Figure 1, wherein B1 is first drive path and B2 is reducer input shaft and the second pto＝power take-off 1.2 shaft part in second drive path; B3 is reducer output shaft and the second power input shaft 2.2 shaft part in second drive path:
Q1 represents accumulator and is connected oil circuit with break 4; Q2 represents accumulator and is connected oil circuit with continuous press pump Tg2; Q3 represents the connection oil circuit of mechanical locking mechanism on accumulator and retarder;
Speed changer (independent first drive path transmission) F2 under full speed operation state closes completely, in C, oil pressure reaches peak value, break 4 is locked by B2 and B3, continuous press pump Tg2 is connected on B1 axle simultaneously, B1 rotating speed is very fast, drive continuous press pump Tg2 continuous pressure in accumulator C, maintain pressure stability in accumulator C, Q3 is connected on the mechanical locking mechanism of retarder, Locking Device is started when oil pressure reaches certain value, or utilize the method for electronic detection, when detecting that B2 axle does not rotate, start electric control lock locking mechanism, thus improve reliability and stability of the present invention.
Second level differential mechanism 2 is started to walk: break 4 is off position, (be now G by second level differential mechanism 2 output terminal load set, retarder is that 1:4 slows down) first drive path load be the load of second level differential mechanism 2 output terminal be 0.5G, the reducer output shaft of the second drive path and the second power input shaft 2.2 place partial load are the load of second level differential mechanism 2 output terminal is 0.5G, reducer input shaft and the second pto＝power take-off 1.2 load are 1/4*0.5G, like this will mainly through the second drive path as power delivery section under the principle of first order retarder at balancing moment, meanwhile first drive path is for slowly running, now total output speed is minimum speed,
Speedup process then increases the reducer input shaft in its path, place (the second drive path) and the load of the second pto＝power take-off 1.2 part by break 4, reduce the Driving Torque in this path, utilize the function of differential mechanism balancing moment, torque is progressively transferred to (first drive path) in another path, until to be braked device completely locked path, break 4 place, torque is all transferred in a road, realizes the linear speed regulating process of speed changer bottom gear to top gear.Reduce place path load by slow releasing break (the now control of break needs adjustment in real time, reference second level differential mechanism 2 output terminal load) on the contrary finally to realize slowing down to realize torque transferred.
According to the technical solution used in the present invention, also can design and power is divided into multichannel, multichannel mixing also needs corresponding differential mechanism combination, technique scheme is two-way mixing, need two differential mechanisms, often increase by a road more backward and all need increase by two differential mechanisms, increase corresponding retarder and break, when retarder mixes with two-way with break assembly sequency, assembly sequency is identical simultaneously.If accompanying drawing 1 is two-way mixing, accompanying drawing 3 is three tunnel mixing.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art are not departing within the scope of technical solution of the present invention, when the technology contents that appeal can be utilized to disclose is made a little change or is modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (2)
1. a mixing rotating ratio speed changer, is characterized in that: comprise, first order differential mechanism (1), second level differential mechanism (2), retarder (3) and break (4);
Wherein, first order differential mechanism (1) is normal assembling, and two semiaxis, as output shaft, are respectively the first pto＝power take-off (1.1) and the second pto＝power take-off (1.2);
Second level differential mechanism (2) is using original two output axle shafts as power input shaft, be respectively the first power input shaft (2.1) and the second power input shaft (2.2), using the driven wheel of differential of this differential mechanism as power output gear, original separate input shaft is as pto＝power take-off;
First pto＝power take-off (1.1) connects with the first power input shaft (2.1) and is 1:1 transmission;
Second pto＝power take-off (1.2) connects with retarder (3) input shaft, reducer output shaft connects with the second power input shaft (2.2), and is positioned at reducer output shaft and the second power input shaft (2.2) connecting section is provided with break (4).
2. one mixing rotating ratio speed changer according to claim 1, it is characterized in that: also comprise, be arranged at the first pto＝power take-off (1.1) and the continuous press pump (Tg2) in the approach axes of the first power input shaft (2.1) place and accumulator (C); Hydraulic brake selected by break (4);
Wherein, accumulator (C) is provided with Safety valve (F1) and electric control valve (F2);
Accumulator (C) separates three pipelines, and connecting brake (4), continuous press pump (Tg2) are communicated with the mechanical locking mechanism on retarder respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610066278.8A CN105465291A (en) | 2016-01-29 | 2016-01-29 | Mixed-speed-ratio transmission |
| CN201610214284.3A CN105757189B (en) | 2016-01-29 | 2016-04-06 | A kind of mixing rotating ratio speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610066278.8A CN105465291A (en) | 2016-01-29 | 2016-01-29 | Mixed-speed-ratio transmission |
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| Publication Number | Publication Date |
|---|---|
| CN105465291A true CN105465291A (en) | 2016-04-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610066278.8A Pending CN105465291A (en) | 2016-01-29 | 2016-01-29 | Mixed-speed-ratio transmission |
| CN201610214284.3A Active CN105757189B (en) | 2016-01-29 | 2016-04-06 | A kind of mixing rotating ratio speed changer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610214284.3A Active CN105757189B (en) | 2016-01-29 | 2016-04-06 | A kind of mixing rotating ratio speed changer |
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| CN (2) | CN105465291A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112499078A (en) * | 2020-11-17 | 2021-03-16 | 何丽 | Robot for logistics storage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2893219A4 (en) * | 2012-09-06 | 2016-12-28 | Dana Ltd | Transmission having a continuously or infinitely variable variator drive |
| CN202937755U (en) * | 2012-10-19 | 2013-05-15 | 联合汽车电子有限公司 | Hybrid stepless speed change device |
| CN203892482U (en) * | 2014-02-28 | 2014-10-22 | 张宝山 | Double-difference type continuously variable transmission |
| CN104088973B (en) * | 2014-06-27 | 2016-08-17 | 姚长水 | A kind of buncher of gear drive Hydraulic Adjustable Speed |
| CN105221692B (en) * | 2015-11-09 | 2019-02-12 | 西南大学 | A kind of no clutch stepless speed changer |
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2016
- 2016-01-29 CN CN201610066278.8A patent/CN105465291A/en active Pending
- 2016-04-06 CN CN201610214284.3A patent/CN105757189B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105757189B (en) | 2018-07-10 |
| CN105757189A (en) | 2016-07-13 |
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Application publication date: 20160406 |