CN101550995A - Stepless speed change device of circularly arranged cone pulleys - Google Patents
Stepless speed change device of circularly arranged cone pulleys Download PDFInfo
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- CN101550995A CN101550995A CNA2009100519154A CN200910051915A CN101550995A CN 101550995 A CN101550995 A CN 101550995A CN A2009100519154 A CNA2009100519154 A CN A2009100519154A CN 200910051915 A CN200910051915 A CN 200910051915A CN 101550995 A CN101550995 A CN 101550995A
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- speed change
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Abstract
The invention discloses a stepless speed change device of circularly arranged cone pulleys, comprising a driven shaft and a driving shaft arranged around the driven shaft. The driven shaft is provided with a columnar friction pulley capable of axially moving, which is connected with a position control device; each driving shaft is provided with a conical friction pulley of which the inner conical face contacts with the columnar face of the columnar friction pulley in parallel to form a friction driving face. The stepless speed change device drives through the friction driving face between the conical friction pulley and the columnar friction pulley and can drive relatively high torque in a use rotation speed range. When position of the columnar friction pulley is in stepless change, drive ratio between the conical friction pulley and the columnar friction pulley will be also in corresponding stepless change so as to realize stepless speed change. The stepless speed change device has advantages of simple and compact structure, reliable property, low cost and so on.
Description
Technical field
The present invention relates to a kind of infinitely variable speed transmission.
Background technique
Known stepless speed variator transmission divides towed and two kinds of forms of friction type usually, and towed transmission is by the liquid medium molecular force transferring power between surface of contact; The friction type transmission is by the frictional force transferring power of surface of contact.Towed drive stepless speed variator typical case utilization is exactly to draw the ring type stepless speed variator, and its advantage is tandem arrangement to organize draw ring more, and the moment of torsion of transmission is big, the efficient height, but shortcoming is a device heat load height, and very high to the requirement of liquid medium physicochemical properties, it is lower to transmit rotating speed.Friction type stepless speed changer typical case utilization is exactly a metal V variable v-belt drive, by axial adjustment V-belt well width, and the radius of control driving wheel and follower V band actual contact face, thus realize regulating continuously velocity ratio.Metal V variable v-belt drive compact structure, control is convenient, the transmission of energy high speed, but many, the complex structure of its member, the requirement on machining accuracy height, and can not transmit too high moment of torsion, anxious quicken and skid easily during transmitting large torque, so be used for speed change transmission more than small displacement engine.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of novel friction type infinitely variable speed transmission, to overcome the above-mentioned defective of prior art.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: a kind of stepless speed change device of circularly arranged cone pulleys, comprise a driven shaft and be arranged in driven axial driving shaft, driven shaft is provided with an axially movable cylindricality friction wheel, and described cylindricality friction wheel also is connected with a position control; Every driving shaft is provided with a cone friction wheel, and the conical surface of described cone friction wheel inboard and the parallel contact of the cylinder of cylindricality friction wheel form the friction driving face.
Preferably, described driving shaft along annular be distributed on driven shaft around.
Preferably, the shaft axis of described driving shaft and driven shaft all intersects at a point.
Preferably, each driving shaft becomes identical angle with driven shaft, and this angle equals half of cone friction wheel cone-apex angle.
Preferably, also include pedestal, the two ends of described driven shaft, driving shaft all by bearings on pedestal.
Preferably, an end of described driven shaft is provided with output gear.
More preferably, described each driving shaft all is connected by bevel gear drive with an input shaft.
Preferably, match by spline between described cylindricality friction wheel and the driven shaft, described position control be one can be along driven shaft shift fork in axial sliding, described cylindricality friction wheel is positioned at shift fork.
Preferably, described cone friction wheel also is connected with pressure regulating mechanism.
More preferably, match by spline between described cone friction wheel and the driving shaft, can endwisely slip between cone friction wheel and the driving shaft, described pressure regulating mechanism comprises the adjusting nut and the spring that are enclosed within on the driving shaft, and spring is between the big end of adjusting nut and cone friction wheel.
The invention has the beneficial effects as follows: utilize the friction driving face between cone friction wheel and the cylindricality friction wheel to carry out transmission, can in using speed range, transmit higher moment of torsion.When infinitely changing the position of cylindricality friction wheel, the velocity ratio between cone friction wheel and the cylindricality friction wheel also can correspondingly stepless variation, thereby realizes stepless change.It is simple in structure, compact that the present invention has, reliable performance, advantage such as cost is low.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the cross-sectional view of stepless speed change device of circularly arranged cone pulleys of the present invention.
Fig. 2 is a kind of three-dimensional structure diagram with six cone friction wheel embodiments of the present invention.
Fig. 3 is the sectional view of a driving shaft unit.
Fig. 4 is the annexation schematic representation of cylindricality friction wheel, shift fork and driven shaft.
Fig. 5 is the angular dependence schematic representation of driving shaft and driven shaft.
1. pedestals among the figure, 2. bevel gear, 3. bevel gear, 4. input shaft, 5. cylindricality friction wheel, 6. driven shaft,
7. adjusting nut, 8. spring, 9. cone friction wheel, 10. driving shaft, 11. pedestals, 12. output gears, 13. shift forks
Embodiment
As shown in Figure 1 and Figure 2, stepless speed change device of circularly arranged cone pulleys of the present invention comprises a driven shaft 6 that is positioned at central authorities, at many driving shafts of arranged around 10 of driven shaft 6, be the six roots of sensation in the present embodiment, and driving shaft 10 along annular be distributed on driven shaft 6 around.The two ends of driven shaft 6 and driving shaft 10 respectively by bearings on pedestal 1,11.
Be with a cylindricality friction wheel 5 on the driven shaft 6, the surface of driven shaft 6 is provided with vertical chute, also be provided with spline in the endoporus of cylindricality friction wheel 5, therefore the Placement between cylindricality friction wheel 5 and the driven shaft 6 is a spline fitted, can move axially between cylindricality friction wheel 5 and the driven shaft 6, but can not relatively rotate.
Every driving shaft 10 is provided with a cone friction wheel 9, and in conjunction with Fig. 5, driving shaft 10 tilts to install, and the shaft axis of each driving shaft 10 and driven shaft 6 all intersects at a point 0.6 one-tenth identical angle α of each driving shaft 10 and driven shaft, angle α=10 ° in the present embodiment, this angle α equals half of cone friction wheel 9 cone-apex angle θ.Like this, the conical surface of cone friction wheel 9 inboards and the just in time parallel contact of the cylinder of cylindricality friction wheel 5 form the friction driving face.Big end at cone friction wheel 9 is provided with an inner chamber, as shown in Figure 3, have a spring 8 to be enclosed within on the driving shaft 10 in this inner chamber, an end of spring 8 contacts with cone friction wheel 9, the other end contacts with adjusting nut 7, and adjusting nut 7 is by one section threads engaged on the driving shaft 10.Keep cone friction wheel 9 to contact with cylindricality friction wheel 5 driving faces, rotate adjusting nut 7, just can adjust the decrement of spring 8, thereby adjust the contact pressure between cone friction wheel 9 and the cylindricality friction wheel 5, therefore, spring 8 and adjusting nut 7 have just constituted pressure regulating mechanism.Also match between cone friction wheel 9 and the driving shaft 10, thereby can in the axial restraint scope, slide between cone friction wheel 9 and the driving shaft 10 by spline.This design has ensured that surface of contact remains uniform pressure, axial motion between cone friction wheel 9 and the driving shaft 10 simultaneously also can compensate manufacturing, alignment error, and device thermal expansion tolerance in the operation process, can effectively improve component's life and transmission robustness.
Because the diameter of cone friction wheel 9 is continually varyings, therefore cylindricality friction wheel 5 is different with the contact position of cone friction wheel 9, velocity ratio between them is also inequality, when changing the axial position of cylindricality friction wheel 5 continuously, just can change the velocity ratio between driving shaft 10 and the driven shaft 6 continuously, thereby realize stepless change.For this reason, the present invention is provided with the position control of a cylindricality friction wheel, in the present embodiment, position control is a shift fork 13, as shown in Figure 4, cylindricality friction wheel 5 is between two jaws of shift fork 13, and the jaw of shift fork 13 is enclosed within the fork pockets at cylindricality friction wheel 5 two ends.When changing the position of shift fork 13, the axial position that can drive cylindricality friction wheel 5 changes.Shift fork 13 can use known straight line driving mechanism to drive, and during executing location control, all in high speed rotating, so the resistance of shift fork is very little, the velocity ratio linear change ensures stable drive to each driving component, and is efficient.
Above-mentioned member constitutes the total member of core of stepless speed changes devices of the present invention, and assembly is installed on the casing with modular manner, to guarantee mounting process and precision.
Input shaft 4 is arranged with driven shaft 6 coaxial lines, bevel gear 3 is installed in the end of input shaft 4, a bevel gear 2 is all installed in the end of every driving shaft 10, bevel gear 2 all is meshed with bevel gear 3, like this, the power of importing from input shaft 4 passes to driving shaft 10 through bevel gear drive, passes to driven shaft 6 by friction driving again, the outer end of driven shaft 6 is provided with output gear 12, is used for outputting power.
Further specify working principle of the present invention below.
Fig. 1 has clearly illustrated structure of the present invention and working principle: from textural, the interior side bus of each cone friction wheel 9 (the nearside wheel profile in the sectional drawing) all with the parallel axes of driven shaft 6, and with cylindricality friction wheel 5 parallel contacts, that is the interior side bus of each cone friction wheel 9 is all equidistant to the axle center of cylindricality friction wheel 5.When cylindricality friction wheel 5 (follower) is in different axial positions, also can be different with the diameter of the cone friction wheel 9 of cone friction wheel 9 (driving wheel) contacting point, the output velocity ratio is also different.Because cylindricality friction wheel 5 has certain width, be that line contacts with cone friction wheel 9 rubbing surfaces, so the diameter of the cone friction wheel 9 of each point correspondence also can be different on the Line of contact, can there be relative slippage in the upper conical friction wheel 9 of Line of contact with point on the cylindricality friction wheel 5.Under the current contact position, be the actual transmission diameter, be defined as the equivalent diameter of cone friction wheel 9 in this position at the diameter of the pairing cone friction wheel 9 of point that does not have relative slippage on the Line of contact between the two-wheeled.The actual transmission of current location is than being exactly the equivalent diameter of follower diameter divided by driving wheel.If the diameter of cylindricality friction wheel 5 is Dout, whole sliding stroke along driven shaft 6 in pedestal 1,11 is L, if it is start of a run that cylindricality friction wheel 5 is in the low order end shown in Fig. 1, at this starting point place, cone friction wheel 9 is Ds with cylindricality friction wheel 5 contacted equivalent diameters, the position (to the distance of starting point) of cylindricality friction wheel 5 on driven shaft 6 is Lx under shift fork 13 effects, and then in this position, speed change gear output velocity ratio is
And in the whole sliding stroke L, gear range is
Under the working state, power is assigned to 9, six groups of cone friction wheels of each group cone friction wheel 9 by bevel gear 3,2 and is formed six transmission surface of contact by same input shaft 4 input, drives same cylindricality friction wheel 5 jointly, via 6 outputs of a total driven shaft.Shift fork 13 is stirred the cylindricality friction wheel vertically under the driving mechanism effect, realize the step-less adjustment of velocity ratio.
The friction type transmission is under the fixing situation of the friction factor of surface of contact, and size that can transmitting torque depends on the size of surface of contact area and the size of surface of contact normal pressure.Increase contact pressure and can effectively increase transmitting torque, but while power is loaded and heat load also can increase,, and can reduce transmission efficiency the physical and chemical performance requirement raising of member and lubricant medium.So the pressure of surface of contact can not infinitely increase, but gets a rational design load.Another effective ways that increase driving torque are the frictional contact surface areas that increase transmission.The present invention can increase the friction driving face effectively by selecting the quantity of cone friction wheel.The quantity of cone friction wheel 9 is many more, and speed change gear can transmit big more moment of torsion, reasonably selects the quantity of cone friction wheel can reach the optimization balance of moment of torsion and structure, cost.Simultaneously, the diameter of cone friction wheel end diameter, layout inclination angle, cylindricality friction wheel, and the optimal design of cylindricality friction wheel stroke can obtain desirable gear range.
The present invention adopts taper cone pulley to adjust element as the driving of stepless transmission, and structure is compact simpler than traditional metal V band, and cost advantage is very obvious.The taper of many groups is the even layout design of wheels initiatively, has effectively increased the transmission area of contact, and the follower rubbing surface is a column envelope surface all the time, and axial motion does not have sudden load change, and stable drive can be transmitted bigger moment of torsion, and bears big moment of torsion sudden change.Pressure regulating mechanism on the cone friction wheel is when guarantee continues to compress, and dynamically compensate for process and running deviation effectively improve transmission irregularity and device lifetime.Only control single straight line motion unit, just can realize stepless change control, actuator is very simple, thereby has improved efficient.
In the foregoing description; input shaft, output gear, driving shaft and driven shaft are relative concept; those skilled in the art can understand at an easy rate; if utilize output gear 12 input power; driven shaft 6 drives driving shaft 10 and rotates, and by input shaft 4 outputting powers, can realize stepless speed change function too; therefore, this application scenarios is also within protection scope of the present invention.
Claims (10)
1. stepless speed change device of circularly arranged cone pulleys, it is characterized in that: comprise a driven shaft (6) and be arranged in driven axial driving shaft (10), driven shaft (6) is provided with an axially movable cylindricality friction wheel (5), and described cylindricality friction wheel (5) also is connected with a position control; Every driving shaft (10) is provided with a cone friction wheel (9), and the conical surface of described cone friction wheel (9) inboard and the parallel contact of cylinder of cylindricality friction wheel (5) form the friction driving face.
2. stepless speed change device of circularly arranged cone pulleys according to claim 1 is characterized in that: described driving shaft (10) along annular be distributed on driven shaft (6) around.
3. stepless speed change device of circularly arranged cone pulleys according to claim 1 and 2 is characterized in that: the shaft axis of described driving shaft (10) and driven shaft (6) all intersects at a point.
4. stepless speed change device of circularly arranged cone pulleys according to claim 3 is characterized in that: each driving shaft (10) becomes identical angle with driven shaft (6), and this angle equals half of cone friction wheel (9) cone-apex angle.
5. stepless speed change device of circularly arranged cone pulleys according to claim 1 is characterized in that: also include pedestal (1,11), the two ends of described driven shaft (6), driving shaft (10) all by bearings on pedestal (1,11).
6. stepless speed change device of circularly arranged cone pulleys according to claim 1 is characterized in that: an end of described driven shaft (6) is provided with output gear (12).
7. stepless speed change device of circularly arranged cone pulleys according to claim 6 is characterized in that: described each driving shaft (10) all is connected by bevel gear drive with an input shaft (4).
8. stepless speed change device of circularly arranged cone pulleys according to claim 1, it is characterized in that: match by spline between described cylindricality friction wheel (5) and the driven shaft (6), described position control be one can be along driven shaft shift fork (13) in axial sliding, described cylindricality friction wheel (5) is positioned at shift fork (13).
9. stepless speed change device of circularly arranged cone pulleys according to claim 1 is characterized in that: described cone friction wheel (9) also is connected with pressure regulating mechanism.
10. stepless speed change device of circularly arranged cone pulleys according to claim 9, it is characterized in that: match by spline between described cone friction wheel (9) and the driving shaft (10), can endwisely slip between cone friction wheel (9) and the driving shaft (10), described pressure regulating mechanism comprises the adjusting nut (7) and the spring (8) that are enclosed within on the driving shaft (10), and spring (8) is positioned between the big end of adjusting nut (7) and cone friction wheel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100519154A CN101550995B (en) | 2009-05-25 | 2009-05-25 | Stepless speed change device of circularly arranged cone pulleys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100519154A CN101550995B (en) | 2009-05-25 | 2009-05-25 | Stepless speed change device of circularly arranged cone pulleys |
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| CN101550995A true CN101550995A (en) | 2009-10-07 |
| CN101550995B CN101550995B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100519154A Expired - Fee Related CN101550995B (en) | 2009-05-25 | 2009-05-25 | Stepless speed change device of circularly arranged cone pulleys |
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Cited By (19)
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| CN102261445A (en) * | 2011-04-07 | 2011-11-30 | 孙向阳 | Automobile low-power-consumption toothless automatic transmission |
| CN102808909A (en) * | 2011-06-03 | 2012-12-05 | 袁啸宇 | Non-slip type stepless speed change device |
| CN102853042A (en) * | 2012-09-01 | 2013-01-02 | 郭克亚 | Long-cone rolling cone type infinitely variable speed transmission mechanism |
| CN103791051A (en) * | 2014-03-04 | 2014-05-14 | 杨科 | Stepless speed regulator driven by friction wheel |
| CN104085717A (en) * | 2014-06-24 | 2014-10-08 | 吴中区甪直渡岘工艺品厂 | Constant-speed material winding machine |
| CN104395642A (en) * | 2012-05-03 | 2015-03-04 | 道格拉斯·马格雅利 | Variable transmission and method and system of manufacture |
| CN105840755A (en) * | 2016-04-08 | 2016-08-10 | 邵阳学院 | Annularly-arranged double-frustum friction type automatic stepless speed change device |
| CN106402304A (en) * | 2016-09-14 | 2017-02-15 | 西南大学 | Stepless speed changing device |
| CN107401587A (en) * | 2017-09-15 | 2017-11-28 | 杨锋 | A kind of infinitely variable speed transmission |
| CN107747615A (en) * | 2017-11-06 | 2018-03-02 | 浙江工业大学 | A kind of mechanism that can realize variable speed |
| CN107763159A (en) * | 2017-11-06 | 2018-03-06 | 浙江工业大学 | A kind of stepless speed changing mechanism |
| CN107825288A (en) * | 2017-11-06 | 2018-03-23 | 浙江工业大学 | A kind of grinding and polishing device with stepless shift function |
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| CN108679181A (en) * | 2018-07-12 | 2018-10-19 | 上海欣原汽车技术开发有限公司 | A kind of cone Belt-type Adjustable-speed Drive device |
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| CN114017480A (en) * | 2021-11-01 | 2022-02-08 | 双皕精工机械(无锡)有限公司 | Compact gear transmission |
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2009
- 2009-05-25 CN CN2009100519154A patent/CN101550995B/en not_active Expired - Fee Related
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| CN102261445A (en) * | 2011-04-07 | 2011-11-30 | 孙向阳 | Automobile low-power-consumption toothless automatic transmission |
| CN102808909B (en) * | 2011-06-03 | 2015-04-15 | 袁啸宇 | Non-slip type stepless speed change device |
| CN102808909A (en) * | 2011-06-03 | 2012-12-05 | 袁啸宇 | Non-slip type stepless speed change device |
| US10066711B2 (en) | 2012-05-03 | 2018-09-04 | Douglas Magyari | Variable transmission and method and system of manufacture |
| CN104395642A (en) * | 2012-05-03 | 2015-03-04 | 道格拉斯·马格雅利 | Variable transmission and method and system of manufacture |
| CN102853042B (en) * | 2012-09-01 | 2014-12-31 | 郭克亚 | Long-cone rolling cone type infinitely variable speed transmission mechanism |
| CN102853042A (en) * | 2012-09-01 | 2013-01-02 | 郭克亚 | Long-cone rolling cone type infinitely variable speed transmission mechanism |
| CN103791051A (en) * | 2014-03-04 | 2014-05-14 | 杨科 | Stepless speed regulator driven by friction wheel |
| CN103791051B (en) * | 2014-03-04 | 2017-06-06 | 杨科 | A kind of buncher of frictional wheel drive |
| CN104085717A (en) * | 2014-06-24 | 2014-10-08 | 吴中区甪直渡岘工艺品厂 | Constant-speed material winding machine |
| CN105840755A (en) * | 2016-04-08 | 2016-08-10 | 邵阳学院 | Annularly-arranged double-frustum friction type automatic stepless speed change device |
| CN105840755B (en) * | 2016-04-08 | 2017-12-29 | 邵阳学院 | A kind of frictional infinitely variable speed device of ring cloth bipyramid platform |
| CN106402304B (en) * | 2016-09-14 | 2018-07-10 | 西南大学 | Stepless speed change device |
| CN106402304A (en) * | 2016-09-14 | 2017-02-15 | 西南大学 | Stepless speed changing device |
| CN107401587A (en) * | 2017-09-15 | 2017-11-28 | 杨锋 | A kind of infinitely variable speed transmission |
| CN107763159A (en) * | 2017-11-06 | 2018-03-06 | 浙江工业大学 | A kind of stepless speed changing mechanism |
| CN107825282A (en) * | 2017-11-06 | 2018-03-23 | 浙江工业大学 | A kind of grinding and polishing device that can realize variable speed |
| CN107825288A (en) * | 2017-11-06 | 2018-03-23 | 浙江工业大学 | A kind of grinding and polishing device with stepless shift function |
| CN107747615A (en) * | 2017-11-06 | 2018-03-02 | 浙江工业大学 | A kind of mechanism that can realize variable speed |
| CN108679181A (en) * | 2018-07-12 | 2018-10-19 | 上海欣原汽车技术开发有限公司 | A kind of cone Belt-type Adjustable-speed Drive device |
| CN109555826A (en) * | 2018-12-08 | 2019-04-02 | 陈世昆 | Centrifugal pendulum friction lantern ring speed changer |
| CN111219466A (en) * | 2019-02-28 | 2020-06-02 | 西安交通大学 | Symmetrical multi-cone-ring friction type automobile continuously variable transmission |
| CN110434614A (en) * | 2019-07-31 | 2019-11-12 | 王卫东 | A kind of preparation facilities of blood vessel section blood vessel bracket |
| CN110700111A (en) * | 2019-10-31 | 2020-01-17 | 河南城建学院 | Bridge floor concrete layer reinforcing bar positioner |
| CN114017480A (en) * | 2021-11-01 | 2022-02-08 | 双皕精工机械(无锡)有限公司 | Compact gear transmission |
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