CN201206616Y - Bimetallic belt drive stepless transmission - Google Patents
Bimetallic belt drive stepless transmission Download PDFInfo
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- CN201206616Y CN201206616Y CNU2008200806126U CN200820080612U CN201206616Y CN 201206616 Y CN201206616 Y CN 201206616Y CN U2008200806126 U CNU2008200806126 U CN U2008200806126U CN 200820080612 U CN200820080612 U CN 200820080612U CN 201206616 Y CN201206616 Y CN 201206616Y
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- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
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- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
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- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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Abstract
The utility model relates to a continuously variable transmission (CVT) driven by a bimetallic strip. The CVT comprises a driving transmission shaft; a driven transmission shaft; a first fixed cone-plate and a second fixed cone-plate, which are arranged on the driving transmission shaft and the driven transmission shaft respectively; a first moving cone-plate and a second moving cone-plate, which are arranged on the driving transmission shaft, slide in the axial direction and are symmetrically distributed on both sides of the first fixed cone-plate; a third moving cone-plate and a fourth moving cone-plate, which are arranged on the driven transmission shaft, slide in the axial direction and are symmetrically distributed on both sides of the second fixed cone-plate; friction disks respectively positioned between the fixed cone-plate and the moving cone-plate; and a first transmission metallic strip or chain and a second transmission metallic strip or chain, which are connected between the driving transmission shaft and the driven transmission shaft. The continuously variable transmission (CVT) adopts the bimetallic strip or chains for transmission, and has the characteristics of simple transmission mechanism, large transmission torque, high efficiency and reliability of the transmission system and long service life.
Description
Technical field
The utility model relates to a kind of stepless speed variator transmission device, belongs to the mechanical transmissioning technology field.
Background technique
Speed changer has manual transmission, automatic transmission, stepless speed variator; For manual transmission, because the number of teeth of the gear train of every retaining is fixed, then the gear ratio of each retaining is a definite value (just so-called " level "), such as, for car, one retaining gear ratio is 3.455, two retainings are 2.056, again to 0.85 of five retainings, be exactly total these numerals are multiplied by the velocity ratio of base ratio again, have only 5 values (promptly having 5 grades) altogether, it is a step change transmission thus.For automatic transmission, it is to utilize the speed of a motor vehicle and load (stroke of gas pedal) to carry out two-parameter control, also be the step type speed changer, only automatic transmission can realize the increase and decrease of gear automatically according to the speed of the speed of a motor vehicle, can eliminate the variable block sensation of stick shift car " pause and transition in rhythm or melody ".And the difference of stepless speed variator and step type is, its gear ratio is not the point that is interrupted, but a series of continuous values, for example can change to 0.85 from 3.455 always, the stepless speed variator structure is simpler than traditional speed changer, and volume is littler, and it had not both had numerous gear pairs of manual transmission, the planetary gear set that does not also have the automatic transmission complexity, it mainly leans on driven wheel and metal tape (chain) to realize the stepless variation of speed ratio.
Variable Speed Technology CVT (Continuously Variable Transmission) adopts driving belt (chain) and the variable driven wheel of the working diameter incompatible transferring power that matches, can realize continuously changing of velocity ratio, thus the optimum Match of the power train of obtaining and engine operating condition.Metal tape is made of two bundle metal rings and a hundreds of tinsel.Initiatively wheels and driven wheels all are made up of movable plate and fixed tray, and a side belt wheel close with oil cylinder can slide on axle, and opposite side is then fixing.Movable plate and fixed tray all are cone structures, and their conical surface forms the V-type groove and comes and V-type metal driving belt (chain) engagement.The power of engine output shaft output at first is delivered to the driving wheel of CVT, is delivered to follower by the V-type driving belt then; For automobile, also pass to wheel at last and drive automobile through retarder, differential mechanism.Movable plate by driving wheel and follower during work moves axially the radius of clean-up that changes driving wheel, the follower conical surface and the engagement of V-type driving belt, thereby changes velocity ratio.The axial internal clearance of movable plate is realized by control system adjusting driving wheel, follower oil hydraulic pump oil cylinder working-pressure as required by the operator.Because the radius of clean-up of driving wheel and follower can realize continuous adjusting, thereby has realized stepless change.
In the hydraulic system of metal tape (chain) formula stepless speed variator, the effect of slave cylinder is the tension force of control metal tape,, reliably transmission efficient from the power of motor to guarantee.Move vertically the position of actuating cylinder control initiative taper dish, moves along the V-type groove at active wheels metal tape, because the length of metal tape is constant, metal tape changes in the opposite direction along the V-type groove on driven wheels.The turning radius of metal tape on active wheels and driven wheels changes, and realizes the continuous variation of speed ratio.Yet the research that improves the driving belt performance and the CVT transmitted power limit is being carried out always, fluid torque converter is integrated in the CVT system, the clamping force of driven wheel realizes electronization control, adopts energy-saving pump in CVT, and driving belt replaces traditional rubber tape with metal tape.New technological progress has overcome the original technological deficiency of CVT system, has caused that the transmitting torque capacity is bigger, the emerging of the second generation CVT of more excellent performance.Compare with fourth gear automatic transmission, the CVT system can will speed up performance and improve 10%, and fuel economy improves 10%-15%.CVT technical development at present gets quite rapid, each big auto vendor is all in the research and development of strengthening this field, especially in the future that has extensive prospect at hybrid vehicle, the status of CVT and effect can not be substituted especially, and it will be the main trend of following speed changer development.
Stepless speed variator has simple in structure, and volume is little, characteristics such as part is few, the work ratio coverage is wide, Economy height, and easy and motor forms ideal matching, thereby improves combustion process, and then reduces oil consumption and discharging; Yet the stepless speed variator carry-over moment of using in the prior art is big not enough, transmitted power more limited (it is following that torque generally is confined to 135Nm) and driving belt defective such as damage easily.Therefore, the stepless speed variator of the big torque of research and development transmission at present is a current important research direction.
The model utility content
At the deficiencies in the prior art and defective, the purpose of this utility model provides a kind of stepless speed variator of bimetallic strip transmission, to solve the less difficult problem of carry-over moment in the prior art, overcomes deficiencies such as the stepless speed variator transmission efficiency is low, working life is short.
The technical solution of the utility model is as follows:
A kind of stepless speed variator of bimetallic strip transmission, it is characterized in that: this stepless speed variator contains initiative drive shaft, passive transmission shaft, being separately positioned on first on initiative drive shaft and the passive transmission shaft decides awl dish and second and decides the awl dish, being arranged on slides vertically on the initiative drive shaft and be arranged symmetrically in first decides the first mantle dish and the second mantle dish of awl dish both sides, being arranged on slides vertically on the passive transmission shaft and be arranged symmetrically in second decides the 3rd mantle dish and the 4th mantle dish of awl dish both sides, decide the friction plate between awl dish and the mantle dish and connect initiative drive shaft and passive transmission shaft between the first transmission metal tape or the chain and second transmission metal tape or the chain.
In the technique scheme of the present utility model, described first decides awl dish and second decides the bipyramid face spare of awl dish for symmetry.The described first mantle dish adopts the ball key to be connected with the second mantle dish and initiative drive shaft; The 3rd mantle dish adopts the ball key to be connected with the 4th mantle dish and passive transmission shaft.
Another technical characteristics of the present utility model also is: the friction plate structure that described friction plate adopts self adaption to regulate, this friction plate structure contain main connecting sheet, the saddle sheet that links to each other with main connecting sheet, rotate auricle and be set in multiple layer metal Steel Belt ring on the saddle sheet; Two saddle sheets of symmetric arrangement before and after described saddle sheet adopts rotate the two ends, the left and right sides that auricle is separately positioned on the saddle sheet; Rotate auricle and be " protruding " shape, form by auricle support and auricle termination two-part; Described auricle supports and is arranged between two saddle sheets, is connected with two saddle sheets by the auricle axle.
The utility model compared with prior art, have the following advantages and effect: 1. two mantle dishes are arranged respectively on each initiative drive shaft and passive transmission shaft, two transmission metal tapes (chain) have driving torque big (providing big nearly one times torque than existing stepless speed variator), the efficient height of transmission system and the characteristics such as prolongation in working life of awl dish.2. also can fully adopt existing stepless speed variator controller to control moving of mantle dish, the control complexity of system is increased; 5. owing to adopted bimetal driving belt (chain), make the reliability of transmitting improve greatly; Mechanism on initiative drive shaft and the passive transmission shaft is basic identical, can reduce manufacture difficulty.4. the employed friction plate of the utility model adopts the friction plate structure of self adaption adjusting, makes the driving belt (chain) and the contact area of awl dish increase, and contact pressure is even; And, rotate auricle and can self adaption regulate the friction fit angle to reduce the influence that driving belt (chain) deflection is brought, the Adaptive matching enhancing of feasible contact.
Description of drawings
The structural representation of the stepless speed variator of the bimetallic strip transmission that Fig. 1 provides for the utility model.
Fig. 2 is the structural representation of the stepless speed variator of the friction plate structure of employing self adaption adjusting.
The plan view of the friction plate structure that the self adaption that Fig. 3 provides for the utility model is regulated.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the three-dimensional structure diagram that " protruding " shape is rotated auricle.
Among the figure: 1-initiative drive shaft; Decide the awl dish on 2-initiative drive shaft; The first mantle dish on 3-initiative drive shaft; The second mantle dish on 4-initiative drive shaft; 5-passive transmission shaft; Decide the awl dish on the 6-passive transmission shaft; The first mantle dish on the 7-passive transmission shaft; The second mantle dish on the 8-passive transmission shaft; 9-the first metal driving belt; 10-the second metal driving belt; The friction plate that 11-self adaption is regulated; 12-main connecting sheet; 13-saddle sheet; 14-auricle axle; 15-auricle termination; 16-multiple layer metal Steel Belt ring; 17-rotation auricle; 18-auricle supports; 19-auricle rubbing surface.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model, structure and working procedure embodiment are further described:
The structural representation of the stepless speed variator of the bimetallic strip transmission that Fig. 1 provides for the utility model.This stepless speed variator contains initiative drive shaft 1, passive transmission shaft 5, being separately positioned on first on initiative drive shaft and the passive transmission shaft decides awl dish 2 and second and decides awl dish 6, being arranged on slides vertically on the initiative drive shaft and be arranged symmetrically in first decides the first mantle dish 3 and the second mantle dish 4 of awl dish both sides, being arranged on slides vertically on the passive transmission shaft and be arranged symmetrically in second decides the 3rd mantle dish 7 and the 4th mantle dish 8 of awl dish both sides, decide the friction plate 11 between awl dish and the mantle dish and connect initiative drive shaft and passive transmission shaft between the first transmission metal tape 9 and the second transmission metal tape 10.First decides awl dish 2 and second decides the bipyramid face spare of awl dish 6 for symmetry.The first mantle dish 3 adopts the ball key to be connected with the second mantle dish 4 and initiative drive shaft; The 3rd mantle dish 7 also adopts the ball key to be connected with the 4th mantle dish 8 and passive transmission shaft.
If will realize gearing down, then the first mantle dish 3 on the active rotation axle 1 and the second mantle dish 4 are mid point to decide awl dish 2, slide laterally simultaneously; And this moment, the first mantle dish 7 and the second mantle dish 8 on the passive transmission shaft 5 was mid point decide awl dish 6, simultaneously slip to the inside; The length of transmission first metal tape 9 and the second transmission metal tape 10 is fixed, velocity ratio is recently determined by the radius of gyration of metal tape on initiative driver group and the passive driving wheel group, the axial internal clearance of mantle dish can recently be determined according to gearing down on two transmission shafts, can adopt hydraulic system to control moving axially of mantle dish, promptly utilize at present in the widely used hydraulic control system of belt (chain type) stepless speed variator, but need carry out synchronization control to two mantle dishes on each, also can adopt the control mode of pure mechanical electronic mode, all moving should keep synchronously, and makes suitable pressure of maintenance between driving belt (chain) upper friction plate 11 and the awl dish.
If will realize the speedup transmission, then the first mantle dish 3 on the active rotation axle 1 and the second mantle dish 4 are mid point to decide awl dish 2, slide to the inside simultaneously; And this moment, the first mantle dish 7 and the second mantle dish 8 on the passive transmission shaft 5 was mid point decide awl dish 6, simultaneously slip laterally; Velocity ratio is recently determined by the radius of gyration of metal tape (or chain) on initiative driver group and the passive driving wheel group, the axial internal clearance of mantle dish can recently be determined according to the speedup transmission on two transmission shafts, all moving should keep synchronously, and makes suitable pressure of maintenance between driving belt (chain) upper friction plate 11 and the awl dish.
Claims (4)
1, a kind of stepless speed variator of bimetallic strip transmission, it is characterized in that: this stepless speed variator contains initiative drive shaft (1), passive transmission shaft (5), being separately positioned on first on initiative drive shaft and the passive transmission shaft decides awl dish (2) and second and decides awl dish (6), being arranged on slides vertically on the initiative drive shaft and be arranged symmetrically in first decides the first mantle dish (3) and the second mantle dish (4) of awl dish both sides, being arranged on slides vertically on the passive transmission shaft and be arranged symmetrically in second decides the 3rd mantle dish (7) and the 4th mantle dish (8) of awl dish both sides, decide the friction plate (11) between awl dish and the mantle dish and connect initiative drive shaft and passive transmission shaft between the first transmission metal tape (9) and the second transmission metal tape (10).
2, according to the stepless speed variator of the described bimetallic strip transmission of claim 1, it is characterized in that: described first decides awl dish (2) and second decides the bipyramid face spare of awl dish (6) for symmetry.
3, according to the stepless speed variator of the described bimetallic strip transmission of claim 1, it is characterized in that: the first mantle dish (3) adopts the ball key to be connected with the second mantle dish (4) and initiative drive shaft; The 3rd mantle dish (7) adopts the ball key to be connected with the 4th mantle dish (8) and passive transmission shaft.
4, according to the stepless speed variator of claim 1,2 or 3 described bimetallic strip transmissions, it is characterized in that: saddle sheet (13), the rotation auricle (17) that the friction plate structure that described friction plate (11) adopts self adaption to regulate, this friction plate structure contain main connecting sheet (12), link to each other with main connecting sheet and be set in multiple layer metal Steel Belt ring (16) on the saddle sheet; Two saddle sheets of symmetric arrangement before and after described saddle sheet adopts rotate the two ends, the left and right sides that auricle is separately positioned on the saddle sheet; Rotate auricle and be " protruding " shape, form by auricle support (18) and auricle termination (15) two-part; Described auricle supports and is arranged between two saddle sheets, is connected with two saddle sheets by the auricle axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200806126U CN201206616Y (en) | 2008-05-16 | 2008-05-16 | Bimetallic belt drive stepless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200806126U CN201206616Y (en) | 2008-05-16 | 2008-05-16 | Bimetallic belt drive stepless transmission |
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| Publication Number | Publication Date |
|---|---|
| CN201206616Y true CN201206616Y (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200806126U Expired - Fee Related CN201206616Y (en) | 2008-05-16 | 2008-05-16 | Bimetallic belt drive stepless transmission |
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| Country | Link |
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| CN (1) | CN201206616Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168744A (en) * | 2011-04-29 | 2011-08-31 | 金华市星诚科技有限公司 | Twin-belt synchronous movement continuously variable transmission |
| CN102478105A (en) * | 2010-11-24 | 2012-05-30 | 程乃士 | Intelligent pressuring continuously-variable transmission |
| CN103144670A (en) * | 2013-03-19 | 2013-06-12 | 陈全强 | Track vehicle |
| CN104221611A (en) * | 2014-08-28 | 2014-12-24 | 湖州思达机械制造有限公司 | Belt wheel structure for harvester |
| CN105151032A (en) * | 2015-09-25 | 2015-12-16 | 清华大学 | Load sensing transmission mechanism and brake system having load sensing transmission mechanism |
-
2008
- 2008-05-16 CN CNU2008200806126U patent/CN201206616Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478105A (en) * | 2010-11-24 | 2012-05-30 | 程乃士 | Intelligent pressuring continuously-variable transmission |
| CN102478105B (en) * | 2010-11-24 | 2014-03-26 | 程乃士 | Intelligent pressuring continuously-variable transmission |
| CN102168744A (en) * | 2011-04-29 | 2011-08-31 | 金华市星诚科技有限公司 | Twin-belt synchronous movement continuously variable transmission |
| CN102168744B (en) * | 2011-04-29 | 2013-04-24 | 金华市星诚科技有限公司 | Twin-belt synchronous movement continuously variable transmission |
| CN103144670A (en) * | 2013-03-19 | 2013-06-12 | 陈全强 | Track vehicle |
| CN103144670B (en) * | 2013-03-19 | 2015-07-08 | 陈全强 | Track vehicle |
| CN104221611A (en) * | 2014-08-28 | 2014-12-24 | 湖州思达机械制造有限公司 | Belt wheel structure for harvester |
| CN104221611B (en) * | 2014-08-28 | 2016-06-08 | 湖州思达机械制造有限公司 | Pulley structure for harvester |
| CN105151032A (en) * | 2015-09-25 | 2015-12-16 | 清华大学 | Load sensing transmission mechanism and brake system having load sensing transmission mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20100516 |