CN2835705Y - Stepless transmission with moveable teeth - Google Patents
Stepless transmission with moveable teeth Download PDFInfo
- Publication number
- CN2835705Y CN2835705Y CN 200520129882 CN200520129882U CN2835705Y CN 2835705 Y CN2835705 Y CN 2835705Y CN 200520129882 CN200520129882 CN 200520129882 CN 200520129882 U CN200520129882 U CN 200520129882U CN 2835705 Y CN2835705 Y CN 2835705Y
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- Prior art keywords
- movable
- tooth
- stepless speed
- input
- speed transmission
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Abstract
The utility model relates to a stepless speed changer with moveable teeth, which uses a movable tooth chain device to change the effective transmission radius of input and output conical bodies to obtain the purpose of stepless speed change. The movable tooth chain device is provided with two groove wheels which are connected together. Movable teeth which can slide along grooves are arranged between the groove slots, and both ends of each movable tooth are respectively positioned in the grooves of the two groove wheels. The movable teeth can circumferentially move by using the circle center of an eccentric hole of an eccentric worm wheel as the circle center by the combined limitation of the eccentric worm wheel and a limiting ring. Thus, the effective transmission radius is changed by changing positions of the movable teeth on big and small ends of the input and the output cocnical bodies. The stepless speed changer of the utility model has optimized transmission structure, light weight, low cost and convenient maintenance and control.
Description
Technical field
The utility model relates to a kind of stepless speed variator, and is particularly related to a kind of movable-tooth stepless speed transmission.
Background technique
Along with the progress of science and technology, the power plant that are applied in every field such as machinery, electric power, communications and transportation and industrial and agricultural production are more and more, and wherein gear shift device is indispensable important component part.Wherein speed changer can be divided into fixed drive ratio speed changer and stepless speed variator by function.And along with the raising of industrial expansion and flow automaticity, stepless speed changes devices is as the important driving mechanism of a class, and is extensive day by day through years of development application at home and abroad.
Friction stepless gearbox is owing to the precision height, and control system is complete, in medium-to-high grade automobile application is arranged, but its efficient is low, and the cost height easily skids, and application area is restricted.Control advantage easily for transmission efficiency and the friction transmision stepless speed-variator of taking into account the fixed drive ratio speed changer, avoid the shortcoming of friction transmision stepless speed-variator, thereby derive fluid power coupling stepless speed variator, automatic transmission speed changer and double-clutch speed changer.But the major defect of above-mentioned several speed changers is complex structures, the cost height, and efficient is low, and maintenance difficulty is big.In order to reach the purpose that improves transmission efficiency, also need pressurization device and traction to increase frictional force usually.Chinese patent application number is that 200310101149.0 patent case has disclosed a kind of mechanical stepless transmission with partial gear device, but partial gear processed complex, and when entering and withdrawing from engagement, velocity jump is arranged, cause rigid impulse, be unsuitable for the high speed transmission.These weakness of above-mentioned stepless speed variator have restricted its development again and have popularized.
The model utility content
In view of the foregoing, the purpose of this utility model just provides a kind of drive mechanism optimization, light weight, and cost is low, is convenient to the movable-tooth stepless speed transmission of safeguarding and controlling.
Movable-tooth stepless speed transmission of the present utility model, at least comprise the input, the output cone that are connected with input, output shaft, worm screw, this movable-tooth stepless speed transmission has movable toothed chain device, between input, output cone, have a certain degree with input, output shaft, and be meshing with each other with cone.
Movable toothed chain device of the present utility model comprises: two sheaves, link together, and have equally distributed groove; Movable tooth, between two sheaves, two ends lay respectively in two sheave grooves, and can slide along groove; Eccentric worm gear and confinement ring, common constraint activity tooth, making movable tooth can be that circular movement is made in the center of circle with the center of circle of the eccentric opening of eccentric worm gear.
The input of movable-tooth stepless speed transmission of the present utility model, output cone are spur bevel gear.
Two sheave structures of movable-tooth stepless speed transmission of the present utility model are identical and connected by splined shaft.
Two sheaves of movable-tooth stepless speed transmission of the present utility model have radially or the equally distributed groove of helical.
The movable tooth of movable-tooth stepless speed transmission of the present utility model is the roller shape.
The eccentric worm gear of movable-tooth stepless speed transmission of the present utility model is rotated by worm screw control.
This movable-tooth stepless speed transmission is compared component and is reduced more than 50% with traditional friction transmision stepless speed-variator, weight reduces about 60%, control flexible, cost is low, can realize control and telecontrol automatically by modes such as electric power, hydraulic pressure, can be widely used in every field such as communications and transportation, machine-building.Such as being example with the automotive industry, about two, 3,000,000 of the annual automobile of producing of China, imported auto is of a great variety, and society is vigorous for the demand of automobile.Stepless speed variator of the present utility model not only can with the automobile accessories of each serial new production, various vehicles in use can also be made it to become the automobile that stepless shift function is arranged through simple the change, so its market prospects are wide.
State with other purpose, feature and advantage and can become apparent on the utility model for allowing, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the schematic diagram of the movable-tooth stepless speed transmission of a preferred embodiment of the present utility model.
Fig. 2 is the movable toothed chain sectional drawing of the movable-tooth stepless speed transmission of a preferred embodiment of the present utility model.
Embodiment
Fig. 1 is the schematic diagram of the movable-tooth stepless speed transmission of a preferred embodiment of the present utility model.Please refer to Fig. 1, wherein 1 is shell; 2,15 is end cap; 3 is eccentric worm gear; 4,16 is the sliding bearing carriage; 5,17 is rolling bearing; 6 is confinement ring; 7,25 is bolt; 8,31 is little end cap; 9,24 is high-strength bolt; 10,21 are input, output shaft; 11,22 is seal ring; 12,20,23,26 is bearing; 13,19 is spur bevel gear; 14 is splined shaft; 18 is movable tooth; 27 is speed regulating bearing; 28 are the speed governing worm screw; 29,30 is sheave.
Wherein, in a preferred embodiment, above-mentioned two sheaves 29 and 30 for example are that structure is identical, and groove is for example radially evenly opened, and link for example is a splined shaft 14; Input, output cone for example are spur bevel gear 13 and 19; Movable tooth 18 for example is a roller.
Fig. 2 is the movable toothed chain sectional drawing of the movable-tooth stepless speed transmission of a preferred embodiment of the present utility model.Movable toothed chain mainly comprises movable tooth 18, confinement ring 6, sheave 29 and sheave 30 (not shown among Fig. 2) and eccentric worm gear 3.The two ends of wherein movable tooth 18 lay respectively in the groove of sheave 29 and sheave 30, can slide along groove; The rotation of confinement ring 6 and eccentric worm gear 3 common constraint activity teeth 18, making its center of circle with the eccentric opening of eccentric worm gear 3 is that circular movement is made in the center of circle.
See figures.1.and.2 simultaneously, movable toothed chain is between input, output spur bevel gear 13 and 19.Because the angle of adjacent two grooves of sheave 29 and 30 equates with input, output spur bevel gear 13 and 19 big or small end tooth ditch angles, and movable toothed chain has certain angle of inclination with input, output shaft 10 and 21, and this makes movable toothed chain to be meshing with each other with input, output spur bevel gear 13 and 19 respectively.Movable tooth 18 can slide in the groove of sheave 29 and 30.Speed governing worm screw 28 drives eccentric worm gear 3 and rotates, eccentric worm gear 3 makes that movable tooth 18 can be that circular movement is made in the center of circle with the center of circle of the eccentric opening of eccentric worm gear 3, thereby change activity tooth 18 is in the position of importing, exporting the big small end of spur bevel gear 13 and 19, with this effective transmission radius that changes input, output spur bevel gear, realize the stepless change transmission of mechanism.When one side of movable tooth 18 meshed with the small end of importing spur bevel gear, opposite side was with the big end engagement of output spur bevel gear.When the big end of movable tooth 18 in spur bevel gear 13 or 19, effective transmission radius maximum of this input, output spur bevel gear; In the process that movable tooth 18 is slided gradually by big end, effective transmission radius of input, output spur bevel gear also diminishes gradually; When the small end of movable tooth 18 in spur bevel gear 13 or 19, effective transmission radius minimum of this input, output spur bevel gear.
In addition, eccentric worm gear 3 can be by speed governing worm screw 28 control, also can be changed control modes such as electric power that eccentric worm gear 3 rotates, hydraulic pressure by other and realize automatically and telecontrol.The engagement of cone and movable toothed chain can be straight-tooth, helical tooth or other engagement system.The connection of two sheaves can for splined shaft or other can be fixed Placement.
In order to guarantee the smooth engagement of movable toothed chain and input, output spur bevel gear, preferably the tooth top of movable tooth 18 is done glomeration.Be to increase soundness, improve structure reliability, input, output shaft 10 with 21 with input, export the Placement that can adopt high-strength bolt for example or other high reliability being connected of cone.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any person of ordinary skill in the field; in the spirit and scope that do not break away from the utility model; when can doing a little change and improvement, so the protection domain of the utility model is as the criterion when looking the claim person of defining.
Claims (6)
1. movable-tooth stepless speed transmission, at least comprise the input, the output cone that are connected with input, output shaft, worm screw, it is characterized in that this movable-tooth stepless speed transmission has movable toothed chain device, between input, output cone, have a certain degree with input, output shaft, and be meshing with each other with cone, this activity toothed chain device comprises:
Two sheaves link together, and have equally distributed groove;
Movable tooth, between two sheaves, two ends lay respectively in two sheave grooves, and can slide along groove;
Eccentric worm gear and confinement ring, common constraint activity tooth, making movable tooth can be that circular movement is made in the center of circle with the center of circle of the eccentric opening of eccentric worm gear.
2. movable-tooth stepless speed transmission according to claim 1 is characterized in that above-mentioned input, output cone are spur bevel gear.
3. movable-tooth stepless speed transmission according to claim 1 is characterized in that above-mentioned two sheave structures are identical and is connected by splined shaft.
4. movable-tooth stepless speed transmission according to claim 1 is characterized in that above-mentioned two sheaves have radially or the equally distributed groove of helical.
5. movable-tooth stepless speed transmission according to claim 1 is characterized in that above-mentioned movable tooth is the roller shape.
6. movable-tooth stepless speed transmission according to claim 1 is characterized in that above-mentioned eccentric worm gear is rotated by worm screw control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129882 CN2835705Y (en) | 2005-10-20 | 2005-10-20 | Stepless transmission with moveable teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129882 CN2835705Y (en) | 2005-10-20 | 2005-10-20 | Stepless transmission with moveable teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835705Y true CN2835705Y (en) | 2006-11-08 |
Family
ID=37300359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129882 Expired - Lifetime CN2835705Y (en) | 2005-10-20 | 2005-10-20 | Stepless transmission with moveable teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835705Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365319C (en) * | 2005-10-20 | 2008-01-30 | 荆其林 | Movable-tooth stepless speed transmission |
-
2005
- 2005-10-20 CN CN 200520129882 patent/CN2835705Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365319C (en) * | 2005-10-20 | 2008-01-30 | 荆其林 | Movable-tooth stepless speed transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080130 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |