CN103573940A - Continuously variable transmission with pin tooth transmission function - Google Patents
Continuously variable transmission with pin tooth transmission function Download PDFInfo
- Publication number
- CN103573940A CN103573940A CN201210265214.2A CN201210265214A CN103573940A CN 103573940 A CN103573940 A CN 103573940A CN 201210265214 A CN201210265214 A CN 201210265214A CN 103573940 A CN103573940 A CN 103573940A
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- China
- Prior art keywords
- cone
- tooth
- pin
- chain
- transmission
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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
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/24—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using chains or toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Friction Gearing (AREA)
Abstract
The invention relates to a continuously variable transmission with pin tooth transmission function, in particular to a continuously variable transmission transmitting by a cone disc with elastic teeth and a swinging pin and chain pin shaft in an engaged friction manner. The cone disc is composed of a cone shell, a support cone disc and a plurality of elastic concave teeth. The elastic concave teeth are circularly and discontinuously distributed along a rotating cone surface of the cone shell, each elastic concave tooth is arranged along the direction of a busbar of the cone surface, the swinging pin and chain pin shaft is in meshed transmission with the elastic concave teeth of the cone shell, and the end surface of the swinging pin and chain pin shaft is in friction transmission with the cone surface of the cone shell. By the continuously variable transmission, the difficulty that a swinging pin chain and a cone disc of an existing continuously variable transmission can hardly transmit large power only by relying on static friction is broken through, and the continuously variable transmission can be used on vehicles with large displacement and other transmission equipment.
Description
One, technical field
The present invention relates to a kind of pin tooth drive stepless speed variator, particularly a kind of cone dish of flexible tooth and the bearing pin engagement of pendulum pin chain and friction Composite Transmission stepless speed variator.
Two, background technique
Stepless speed-change automobile be the main trend ，Ge great automobile factory of current development of automobile in order to improve the competitive ability of product, all carry out energetically the R&D work of stepless speed variator (Continuously Variable Transmission).Current, popular stepless speed variator has mainly adopted two kinds of kinds of drive in the world: a kind of is Steel Belt Transmission, and another kind is the transmission of pendulum pin chain.
During the work of CVT stepless speed variator, must be by hydraulic pressure pressure, allow a pair of V-arrangement cone dish of variable groove width tightly clamp pendulum pin chain, because it is the frictional force transferring power of utilizing between pendulum pin chain and cone dish, between pendulum pin chain and cone dish, do not allow to skid, in order to increase stiction, the most direct mode is exactly the pressure increasing between pendulum pin chain and cone dish.Advantages such as that although CVT gearbox has are comfortable, volume is little, efficiency is high and energy-conservation, there is an obvious weakness in CVT stepless speed variator: friction transmission is difficult to provide enough large driving power, and CVT stepless speed variator is still difficult to use in large discharge capacity almost car.
This patent adopts engagement and the friction Composite Transmission of pendulum pin chain bearing pin and flexible tooth cone dish, break through existing stepless speed variator pendulum pin chain and only depend on static friction to be difficult to transmit powerful difficulty, stepless speed variator can be equipped for large discharge capacity automobile and other transmissions.
Three, summary of the invention
In order to solve stepless speed variator pendulum pin chain, only depend on static friction to be difficult to transmit powerful difficulty, the present invention proposes a kind of cone dish and the bearing pin engagement of pendulum pin chain and friction Composite Transmission stepless speed variator of flexible tooth, and the key problem in technology of this patent is to solve equal pitch bearing pin and the speed change engagement problem that becomes the bar tooth of tooth pitch.
Technological scheme of the present invention: a kind of flexible tooth cone dish and the bearing pin engagement of pendulum pin chain and friction transmision stepless speed-variator, be specifically related to a kind of in the middle of two pairs of cone dishes, there is a pendulum pin chain, it is characterized in that the friction driving of pendulum pin chain and cone dish to change into the cone dish and the bearing pin engagement of pendulum pin chain and friction Composite Transmission of flexible tooth.Cone dish is comprised of conical shell, cone of support dish, elasticity convex bar tooth, along conical shell rotary cone hoop, be interrupted some elasticity convex bar teeth that distribute, each elasticity convex bar tooth is along cone element direction, convex bar tooth engagement driving on pendulum pin chain bearing pin and conical shell, pendulum pin chain pin roll end face and the transmission of conical shell conical surface friction.
Along conical shell cone element, have convex breach, elasticity convex bar tooth is arranged in conical shell convex breach, and elasticity convex bar tooth is assembled some Compress Springs and connected with conical shell with bolt by a cone of support dish by convex steel bar bottom surface.
Compress Spring in elasticity convex bar tooth is limit spring, and its maximum compressibility equals convex tooth depth, and usings this as the criterion of selecting limit spring, thereby guarantees that Topland and the conical surface seamlessly transit.
The feature of the technical program is to change stepless speed variator friction driving into engagement and friction Composite Transmission.Due to cone dish convex-shaped bar tooth along bus radially, bar space width changes with tooth is long, and the chain link of pendulum pin chain is equal length, and being therefore engaged in speed-change process of pendulum pin chain bearing pin and bar tooth is constantly to change, time and bearing pin and bar tooth engagement driving, time and bearing pin and conical surface friction transmission.When the moment of torsion transmitting is greater than after friction torque, the engagement of bearing pin and bar tooth becomes main transmitting assemblies, through appropriate design, can transmit enough large moment of torsion.
In transmission process, the bearing pin of pendulum pin chain and the way of contact between the conical surface and convex bar tooth have four kinds:
When the bearing pin of pendulum pin chain meshes with convex bar tooth, be with engagement system transmitting torque;
When bearing pin contacts with bar tooth tooth top, due to the camber of spring feature of convex bar tooth, convex bar tooth will be compressed to conical surface cambered surface by bearing pin, be the mode transmitting torque rubbing;
When bearing pin contacts with bar tooth flank, for example contact with the hypotenuse mid point of the trapezoidal flank of tooth, the following part in convex bar toe joint contact will be compressed to conical surface cambered surface by bearing pin, and the mode transmitting torque to mesh.
When pendulum pin chain pin roll end face contacts with the cone dish conical surface and be vertical with cone element, be with friction mode transmitting torque.
The art of this patent beneficial effect:
By the cone dish and pendulum pin chain bearing pin engagement driving and friction driving combined technology scheme of flexible tooth, overcome existing stepless speed variator and only by friction driving, be difficult to transmit powerful difficulty, for bright prospects have been started in stepless speed variator application on high-powered car or other equipments.
Four, accompanying drawing explanation
Fig. 1 is elastic strip tooth cone dish diagram
Fig. 2 is in elastic strip tooth diagram (A-A diagram) diagram: 1 conical shell, 2 cone of support dishes, 3 convex steel bars, 4 limit spring, 5 convex breach, 6 bolts.
Five, embodiment
(1) cone dish design
The speed-change process of stepless speed variator is exactly to change the engaging friction circle radius R of pendulum pin chain on cone dish
2process.
First, set basic circle.So-called basic circle is exactly to mesh one by one at cone dish engaging friction circle upper pin and bar tooth, is complete engagement driving.In the situation that transmitting same torque, if adopt fricting transmissioning mode, basic circle place will provide maximum frictional force.This patent replaces friction that driving force is provided by bearing pin and the engagement of bar tooth, thereby has obviously improved the ability of driving torque.And on other pendulum pin chain cone dish engaging friction circle, be the Composite Transmission of bearing pin and the engagement of bar tooth and pin roll end face and the friction of cone dish.
Secondly, determine the bar number of teeth order Z on basic circle
1.If Base radius is R
1, tooth pitch equals chain pitch p, and basic circle girth is 2 π R
1=Z
1p.Be on basic circle, to have Z
1individual bar tooth.
Cone dish is comprised of conical shell 1, cone of support dish 2, elasticity convex steel bar 3, limit spring 4, along conical shell cone element, there is convex breach 5, convex steel bar 3 is arranged in conical shell convex breach 5, and convex steel bar 3 bottom surfaces are assembled some Compress Springs 4 and connected with conical shell by a cone of support dish 2 use bolts 6.
(2) speed change engagement driving is analyzed A
The speed-change process of stepless speed variator is exactly to change the engaging friction circle radius R of pendulum pin chain on cone dish
2process.
If Base radius is R
1, the bar number of teeth is Z
1, tooth pitch equals chain pitch p, and basic circle girth is 2 π R
1=Z
1p.Pendulum pin chain engaging friction circle radius is R
2, circumference is 2 π R
2=Z
2p, Z
2be the chain number on engaging friction circumference, have Z
2/ Z
1=R
2/ R
1, this is chain number on engaging friction circumference when the basic circle number of teeth is proportional with the radius of engaging friction circle and basic circle.For the chain number (tooth pitch) between adjacent two teeth, also observe this rule.
If get pendulum pin chain engaging friction circle radius R
2=100mm, Base radius R1=50mm, other design parameters are constant, the tooth pitch on this circle compared with basic circle on tooth pitch increase and to be twice, be i.e. Z
2/ Z
1=R
2/ R
1=100/50=2 now puts bearing pin and the bar tooth engagement driving on pin chain, and an adjacent bearing pin and conical surface friction transmission have realized the Composite Transmission of engagement and friction thus.
(3) if analyzing B, speed change engagement driving gets pendulum pin chain engaging friction circle radius R
2=75mm, Base radius R
1=50mm, other design parameters are constant, the tooth pitch on this circle compared with basic circle on tooth pitch increase, i.e. Z
2/ Z
1=R
2/ R
1this represents there are 3 chain links between 2 bar teeth=75/50=3/2, when pendulum pin chain bearing pin is by basic circle R
1=50mm is to circle R
2in=75mm speed-change process, at R
2on=75mm circle, bearing pin on pendulum pin chain and bar tooth engagement driving, an adjacent bearing pin is positioned at bar tooth top portion friction driving.
Claims (3)
1. a pin tooth drive stepless speed variator, be specifically related to a kind of in the middle of two pairs of cone dishes, there is a pendulum pin chain, it is characterized in that: the cone dish and the bearing pin engagement of pendulum pin chain and friction Composite Transmission that the friction driving of pendulum pin chain and cone dish are changed into flexible tooth, cone dish is by conical shell, cone of support dish, elasticity convex bar tooth forms, along conical shell rotary cone hoop, be interrupted some elasticity convex bar teeth that distribute, each elasticity convex bar tooth is along cone element direction, elasticity convex bar tooth engagement driving on pendulum pin chain bearing pin and conical shell, pendulum pin chain pin roll end face and the transmission of conical shell conical surface friction.
2. elasticity convex bar tooth claimed in claim 1, it is characterized in that: along conical shell cone element, have convex breach, elasticity convex bar tooth is arranged in conical shell convex breach, and elasticity convex bar tooth is assembled some Compress Springs and connected with conical shell with bolt by a cone of support dish by convex steel bar bottom surface.
3. elasticity convex bar tooth claimed in claim 1, is characterized in that: the Compress Spring in elasticity convex bar tooth is limit spring, and its maximum compressibility equals convex tooth depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210265214.2A CN103573940A (en) | 2012-07-30 | 2012-07-30 | Continuously variable transmission with pin tooth transmission function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210265214.2A CN103573940A (en) | 2012-07-30 | 2012-07-30 | Continuously variable transmission with pin tooth transmission function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103573940A true CN103573940A (en) | 2014-02-12 |
Family
ID=50046404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210265214.2A Pending CN103573940A (en) | 2012-07-30 | 2012-07-30 | Continuously variable transmission with pin tooth transmission function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103573940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140626A (en) * | 2018-11-03 | 2020-05-12 | 范泽林 | Continuously variable transmission |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1222344B (en) * | 1961-12-30 | 1966-08-04 | Reimers Getriebe K G | Infinitely variable chain transmission with toothed conical disks arranged in pairs and forming a chain groove with a wedge-shaped cross-section |
| JPH04194440A (en) * | 1990-11-28 | 1992-07-14 | Yasuo Ono | Chain type continuously variable transmission |
| WO2000050785A2 (en) * | 1999-02-23 | 2000-08-31 | Ran Siman Tov | Continuous variable transmission |
| CN1442623A (en) * | 2002-03-06 | 2003-09-17 | 程乃士 | Mechanical friction type stepless speed change device |
| CN1888476A (en) * | 2005-06-30 | 2007-01-03 | 程乃士 | Equal strength conjugate metal belt or swing pin chain type driving assembly for stepless speed changer |
| CN101644312A (en) * | 2008-08-08 | 2010-02-10 | 范泽林 | Continuously variable transmission |
| CN201705873U (en) * | 2010-06-18 | 2011-01-12 | 上海工程技术大学 | Centrifugal segmental gear chain type continuously variable transmission |
| CN102444700A (en) * | 2010-10-11 | 2012-05-09 | 张敏 | Cvt continuously variable transmission |
-
2012
- 2012-07-30 CN CN201210265214.2A patent/CN103573940A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1222344B (en) * | 1961-12-30 | 1966-08-04 | Reimers Getriebe K G | Infinitely variable chain transmission with toothed conical disks arranged in pairs and forming a chain groove with a wedge-shaped cross-section |
| JPH04194440A (en) * | 1990-11-28 | 1992-07-14 | Yasuo Ono | Chain type continuously variable transmission |
| WO2000050785A2 (en) * | 1999-02-23 | 2000-08-31 | Ran Siman Tov | Continuous variable transmission |
| CN1442623A (en) * | 2002-03-06 | 2003-09-17 | 程乃士 | Mechanical friction type stepless speed change device |
| CN1888476A (en) * | 2005-06-30 | 2007-01-03 | 程乃士 | Equal strength conjugate metal belt or swing pin chain type driving assembly for stepless speed changer |
| CN101644312A (en) * | 2008-08-08 | 2010-02-10 | 范泽林 | Continuously variable transmission |
| CN201705873U (en) * | 2010-06-18 | 2011-01-12 | 上海工程技术大学 | Centrifugal segmental gear chain type continuously variable transmission |
| CN102444700A (en) * | 2010-10-11 | 2012-05-09 | 张敏 | Cvt continuously variable transmission |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140626A (en) * | 2018-11-03 | 2020-05-12 | 范泽林 | Continuously variable transmission |
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Application publication date: 20140212 |