CN2708040Y - Harmonic friction stepless gearbox - Google Patents
Harmonic friction stepless gearbox Download PDFInfo
- Publication number
- CN2708040Y CN2708040Y CN 03276400 CN03276400U CN2708040Y CN 2708040 Y CN2708040 Y CN 2708040Y CN 03276400 CN03276400 CN 03276400 CN 03276400 U CN03276400 U CN 03276400U CN 2708040 Y CN2708040 Y CN 2708040Y
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- CN
- China
- Prior art keywords
- harmonic
- friction wheel
- transmission
- stepless gearbox
- generator
- 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
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Abstract
The utility model relates to a harmonic friction stepless gearbox whose power-transmission is the theory of the planetary transmission, comprising an input shaft, a rigid friction wheel, a flexible friction wheel, and an output shaft. A harmonic generator is plugged on the input shaft, and the ratio and the transmission ratio of the harmonic generator are large (single stage: ratio 10-1000; transmission ratio 100). The utility model has the advantages of constant power output, no slide in the transmission, high efficiency, compact conformation, small volume, light weight, smooth transmission, no noise, safety, easy manufacture; besides, the utility model can be used in the transmission which needs stepless speed change.
Description
Affiliated technical field
It is the mechanical friction infinitely variable speed transmission of principle with the Gear Planet Transmission that the utility model relates to a kind of, is adapted to the big harmonic wave friction stepless gearbox of transmission middle low power velocity ratio and gear ratio.
Background technique
The structure of the harmonic wave friction stepless gearbox of using has two kinds of patterns at present.(1) wave-generator is initiatively controlled the speed governing of rigidity friction wheel, the output of flexible friction wheel.(2) wave-generator active, the rigidity friction wheel is fixed, and its speed governing is exported and controlled to the flexible friction wheel.
The principle of harmonic wave friction variable speed is: the inner diameter of rigidity friction wheel is greater than the outer diameter of flexible friction wheel, and harmonic generator is pressed on the flexible friction wheel on the inner headed face of rigidity friction wheel, makes it to produce to paste and opens up motion.The outer diameter of flexible friction wheel and the inner diameter difference of rigidity friction wheel are more little, and gear ratio is big more.Therefore, make the internal diameter of rigidity friction wheel and the difference of the outer diameter that flexible friction is taken turns to produce variation continuously, just can obtain stepless change.The friction torque that produces between flexible friction wheel and the rigidity friction wheel is exactly the output torque of output shaft.The transmission principle of harmonic wave Friction Stepless that Here it is.
The flexible friction wheel is made the circular cone tube or the rigidity friction wheel is made internal taper hole.Harmonic generator makes the compliant wheel radial deformation and is pressed on the rigidity friction wheel hole wall, and control rigidity friction wheel or flexible friction wheel shaft is to moving during speed governing, and the diameter difference of two-wheeled changes taking place, and forces the harmonic generator radial displacement.When speed adjustable range is big, generally make two ripples.The transmission capacity of the harmonic wave friction stepless gearbox of using is less at present, and slewing range is also less, particularly to the speed governing of close steps scope, does not also have fine solution.
Summary of the invention
For the ability and the expansion velocity ratio slewing range that improve the transmission of harmonic wave Friction Stepless, the utility model is at harmonic wave cone friction gear (number of patent application: the new harmonic friction stepless gearbox of designing on the basis 022848193).The utility model single staged transmission ratio can realize 10-1000, and gear ratio is 100.
The technical scheme in the invention for solving the technical problem is: the rigidity friction wheel that has internal taper hole is assemblied in the frame, and just the wheel outside is fixedly connected with tooth bar, can move back and forth under the driving of gear.The flexible friction wheel places rigidity friction wheel taper hole and output shaft to connect firmly.In the axis hole of input shaft cylindrical spring is housed, the left end of spring is a pressure regulator valve, and pressure regulator valve and axis hole link with screw thread.The right-hand member of spring is a thrust valve, and the conical surface of thrust valve and the harmonic generator bar that inserts in the input shaft radial hole contact.Wave-generator roller outer shroud is made the evagination circular shape.Rigidity friction wheel relative flexibility friction wheel and wave-generator are moved to the fastest ratio position.Rotate the pressure regulator valve extrusion spring again, spring drives thrust valve, and thrust valve promotes harmonic generator, and wave-generator is out of shape the flexbile gear roof pressure and is pressed on the rigidity friction wheel inner hole surface.
Just wheel is given the suitable precompression of spring in the fastest ratio position by pressure regulator valve.To big speed ratio stepless speed regulation, the rigidity friction wheel is an active force to the pressure of flexible friction wheel to mobile rigidity friction wheel from close steps.Just the taper hole of wheel is contacted to small end with flexbile gear by big end and moves.Flexbile gear compressing wave-generator radially moves and is pushing away the thrust valve holddown spring.Wave-generator thrust valve conical surface in revesal is more many greatly to the active force of thrust valve than spring to its active force, thereby wave-generator makes that positive pressure increases between flexible friction wheel and the rigidity friction wheel, and the friction torque of generation is big, has increased transmission capacity.
The beneficial effects of the utility model are: 1. increased transmission capacity; 2. wave-generator is bigger in the radial displacement space, effect lower edge of thrust valve, increases transmission slewing range when.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model overall construction drawing.
Fig. 2 is the overcoat sectional view of rolling bearing 5 outer shrouds on the utility model harmonic generator.
Fig. 3 is the utility model harmonic generator upper roller sectional view (the evagination roller of the also available band sliding bearing of rolling bearing 5 replaces).
Fig. 4 is the view of the utility model thrust valve 3
Among Fig. 1, A. input shaft, B. output shaft, 1. pressure regulator valve, 2. cylindrical spring, 3. thrust valve, 4. harmonic wave wave-generator, 5. rolling bearing, 6. the housing washer collar, 7. flexible friction wheel, 8. the rigidity friction wheel of band taper hole, 9. tooth bar, 10. gear, 11. worm gears, 12. worm screws.
Embodiment
In Fig. 1, axle A and axle B support with a pair of angular contact ball bearing or tapered roller bearing respectively.Process a through hole at axle A center, left end (small end) car goes out internal thread and pressure regulator valve 1 and revolves and join, dress cylindrical spring 2 and thrust valve 3 in the hole, and axle A right-hand member (big end) processing radial direction through hole is installed harmonic generator.According to the size of precompression, cylindrical spring 2 can be single, also can with the combination.Thrust valve 3, its cone angle alpha should be greater than two times of friction angle , to guarantee the smooth and easy of reciprocating speed-regulating.The roller of harmonic generator, available deep groove ball bearing, outer shroud will attach together a convex-dished sleeve with close-fitting, uses the split ring axis to fixing.The roller of harmonic generator, the evagination roller of also available band sliding bearing.Flexible friction wheel 7 should be made the thin walled cylinder formula, interferes for discord rigidity friction wheel inner conical surface in the speed-change process, and should there be circular arc (the flexible friction wheel also can be done coning, and the rigidity friction wheel should be made drum type) its end.Rigidity friction wheel external cylindrical surface and frame hole and have feather key movingly, do not rotate so that can move axially.Gear 10 and worm gear 11 usefulness bindings are connected on the same axle.
In the embodiment shown in fig. 1, rotation pressure regulator valve 1 makes spring 2 obtain energy, and spring 2 promotes thrust valve 3, and thrust valve 3 promotes harmonic generators 4 makes flexible friction take turns 7 resiliently deformables and be pressed on the taper hole of rigidity friction wheel 8.Through harmonic generator 4, exported by output shaft B by flexible friction wheel 7 and rigidity friction wheel 8 by axle A input for power.When needing speed change in the transmission process, turn handwheel through worm screw 12, worm gear 11 coaxial fixed gears 10, tooth bar 9 drives rigidity friction wheel 8 and moves back and forth, and carries out stepless change.
Claims (4)
1. harmonic wave friction stepless gearbox, in frame, can control and move the rigidity friction wheel that has taper hole, flexible friction wheel and output shaft connect firmly, harmonic generator initiatively, it is characterized in that: the harmonic generator that has a roller inserts in the input shaft radial hole with thrust valve inclined-plane in the axis hole and contacts, the thrust valve left side contacts with cylindrical spring, and the cylindrical spring left side contacts with pressure regulator valve, and pressure regulator valve connects with screw thread and axis hole.
2. harmonic wave friction stepless gearbox according to claim 1 is characterized in that: the roller on the harmonic generator, install evagination circular arc cover additional on the available deep groove ball bearing outer shroud.
3. harmonic wave friction stepless gearbox according to claim 1 is characterized in that: the roller of harmonic generator, can use the evagination arc wheel of being with sliding bearing.
4. harmonic wave friction stepless gearbox according to claim 1 is characterized in that: it is that a pyramid or an end are circular cone for the cylinder the other end for the cylinder the other end that thrust valve can be made an end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276400 CN2708040Y (en) | 2003-08-13 | 2003-08-13 | Harmonic friction stepless gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276400 CN2708040Y (en) | 2003-08-13 | 2003-08-13 | Harmonic friction stepless gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708040Y true CN2708040Y (en) | 2005-07-06 |
Family
ID=34842863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03276400 Expired - Fee Related CN2708040Y (en) | 2003-08-13 | 2003-08-13 | Harmonic friction stepless gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708040Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439759A (en) * | 2022-03-25 | 2022-05-06 | 溧阳市新力机械铸造有限公司 | Lifting self-speed-regulating impeller device for steam compressor |
-
2003
- 2003-08-13 CN CN 03276400 patent/CN2708040Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439759A (en) * | 2022-03-25 | 2022-05-06 | 溧阳市新力机械铸造有限公司 | Lifting self-speed-regulating impeller device for steam compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |