CN1292467A - Gear-type high uniform velocity stepless speed change device - Google Patents
Gear-type high uniform velocity stepless speed change device Download PDFInfo
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- CN1292467A CN1292467A CN 99121611 CN99121611A CN1292467A CN 1292467 A CN1292467 A CN 1292467A CN 99121611 CN99121611 CN 99121611 CN 99121611 A CN99121611 A CN 99121611A CN 1292467 A CN1292467 A CN 1292467A
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Abstract
The gear type high-uniform stepless variable drive consists of epicyclic gear and high uniform velocity mathematical curve speed-regulating mechanism. On the basis of mathematic methods of approximation and coverage and kinematics said invention initiates the invented "double uniform velocity cycloid" function theory so as to produce the stepless speed-regulating mechanism with high uniform velocity, linear continuity and large-range rigidity. It not only is simple in structure, similar to two-stage gear pair, but also possesses good driving rigidity, high mechanical efficiency, high speed stability, output uniformity and simple process, so that it can fully meet the requirements in the fields or mechanical engineering, machine-tool machining, traffic transportation and chemical industry, etc.
Description
Originally belong to gearing, be used for the speed change of dynamic power machine.
Investigate domestic and international patent and relevant books, similar extremely many, only nearly seven, eight years patent just reaches thousands of.Most is the friction class, as types such as wide belt, steel ball, cone pulleys, though the rigid gear class is also arranged, as: CN1045292,1056558,1066586,1068199 and the GVSA type three-phase pulsation speed variator arranged side by side produced of chain type, sliding vane and Germany, the pulsation speed variator of Lero---Max type produced in USA, the shunting class that the little mechanism of class feedback great institutions still arranged is as: CN1045292,1056343,1019194,1068178 etc. all representative.The friction type shortcoming is a lot, people wish that always high-caliber rigid-types is arranged, therefore a large amount of patents appear, but mechanism is always very complicated, and output at the uniform velocity steadily, vibration at high speed and aspects such as noise and transmission efficiency are all undesirable, so this research has for a long time become the classical big topic of mechanical industry.
The objective of the invention is and to pay with the transmission that simply reaches similar I and II gear, design the stepless speed adjusting gear of high uniform velocity, large speed ratio scope, make transmission stiffness, mechanical efficiency, high-speed smooth degree and technology simplification etc., all be not less than common gear type gearbox.
Researchs such as long-term profound mechanism of warp and kinology, mathematics, find that establishing planet arm (Fig. 3) OO ' in the planetary mechanism (Fig. 5) rotates with definite value angular velocity φ, sun gear also rotates with (with respect to the planet arm) fixed angular speed β, then two speed ratio β/φ=C are constant value, and setting C is a scope (C
aTo C
b) interior successive value, i.e. C ∈ (C
a, C
b), then can ask at planet wheel O ' and go up arbitrfary point P (x, track y).
Establish OP=λ r (λ is a radius variation ratio) R, r again and be respectively the sun, planetary pinion reference radius, R/r=m, t are the time, and θ t is planet wheel O ' (with respect to a planet arm) corner, thus because of two-wheeled be that gear motion has
∴ θ=β R/r=m β=mC φ, ∵ α=pi/2-(t=pi/2-φ t (mC+1) of θ+φ) again
∴X=OD=OE-DE=OE-PG=(R+r)cosφt-λr?cosφt(mC+1)
Y=PD=EO '-O ' G=(R+r) sin φ t-λ r sin φ t (mC+1) promptly gets the lopcus function of asking P to order:
This is at the uniform velocity to rotate the curvilinear function that produces because of the sun and planet two gears are, for convenience might as well be called " two uniform velocity cycloid " function, be definite value because of R in actual design, r, λ again, ratio C is the most representative cross variable, also might as well be called C curve system again, be standing wave deltoid periodically, the cycle is φ t ∈ (0,2 π/mC).(0, π/mC) research is relatively dwindled speed ratio district (C as can be known within the possible range to get its half cycle section φ t ∈
a, C
b), remove the curve two ends, take out the intermediate portion segmentation shortly and study, this speed ratio district is divided into the as far as possible little arithmetic series of difference, for example establish C
b-C
a=H, as divide 10 grades, this progression is H/10,2H/10, and 3H/10 ... H counts each the substitution function again, forms intensive curvilinear system (Fig. 4), establishes them and is C
1, C
2, C
3... C
10, can find that the quite long intermediate section of these curves is very accurately approximate, be the angle position difference only, the short more then degree of approximation of intermediate section is high more, only needs with a certain C in them
kRotation just can extremely accurately substitute other each curve one by one, has also just substituted whole C ∈ (C
a, C
b) curvilinear system.Want strict control as this accuracy rating, then can become district (C according to speed
a, C
b) wait designing requirement, based on " two at the uniform velocity curve cycloid ", obtain this curvilinear system and C
kCovering rate function, and stipulate out the degree of approximation of this rate, accurately determine the effective intermediate section of each curve again.The establishment that this " two uniform velocity cycloid " is theoretical makes the present invention's " high uniform velocity stepless speed change device " structural design that reliable basis arranged.
Figure of description Fig. 1, the 2nd, total figure.Fig. 3 is " two uniform velocity cycloid " formation base figure.Fig. 4 is λ=1, R/r=1, speed ratio c=0.4,0.6,0.8 ... " two uniform velocity cycloid " curvilinear system, Fig. 5,6 are respectively layman's galaxy and speed regulating mechanism assembly.Fig. 7,8 is respectively speed regulating mechanism and each part of layman's galaxy decomposes.Fig. 9 decomposes for framework accessory.Figure 10 is expert galaxy formula continuous variable transmission assembly.
The present invention is made up of (Fig. 1,2) layman's galaxy train of gearings 2, one-way driving mechanism 3, high uniform velocity mathematic curve speed regulating mechanism 1 and frame 4.Exterior epicyclic gear system is made up of solar shaft 5, planet arm 6, sun gear 7, planetary pinion 8 (Fig. 5,8).The sun gear center is porose and be set on the solar shaft, and both are fastening and be positioned at the train center.The planet arm is the disk that has long cover, and long trepanning is assemblied in solar shaft with bearing, and all being loaded on bearing of cover stretched out frame again behind the frame central hole and made line shaft; Dish week is fixed a plurality of planet axis 10, and each planet wheel 8 with Bearing Installation.One-way driving mechanism 3 is arranged on the planetary pinion, and this mechanism is provided with the earhole plate on the outer collar with steel ball (post) formula one-way driving mechanism commonly used to become eccentric disk 9, and fixed eccentric shaft 11 on the earhole, and pine is being joined roll sleeve 12 and forms on the axle; Also bearings such as ball, roller can be set between the two.This steel ball (post) formula one-way driving mechanism also can replace with the ratchet one-way driving mechanism.The new expert galaxy that the superior planet train also can be used internal-round gear wheel composition instead substitutes (Figure 10), as long as it is the center hole and the solar shaft of this new planet arm 39 is fastening, again sun gear is changed with the interior mutually internal-round gear wheel 38 that meshes of each planetary pinion and be new sun gear, its center is provided with long cover 40, trepanning uses Bearing Installation in solar shaft, cover week, in the frame hole, other mechanism of this expert galaxy was identical with layman's galaxy stepless speed variator with Bearing Installation.High uniform velocity mathematic curve speed regulating mechanism (Fig. 6,7) is by n group (n=2,3,4, be example with n=2 among the figure), every group be 1 french curves 14, plate axle 13, rail chain 20, bar nail 17, connecting rod 18 and complete machine only be one rail plate 15, transfer wheel 19, transfer wheel flange 28, frame plate 25, show speed dish 29, transfer handle 30, fixed 31, compositions such as frame plate flange 32, cover plate 34.The french curves cross section is a sipes, and its center of rotation plate axle 13 is positioned on the front of the slot center hole, and there are chain hole 16 and bar nail 17 in its tail end inboard, and the center line of curve board slot is above " two uniform velocity cycloid " function curve of chatting.
C is at (C
a, C
b) in get in the actual use with the speed governing ratio that needs most or intermediate value (C
a+ C
b)/2, or decide according to precision.Rail plate 15 is that the center has the lateral opening plectane of n group arc, is made up of back edge 23 and 24 two of position-limited edges for every group; Back edge is the track disc of curve board slot outside breech face along the rotation of plate axle, and position-limited edge is identical with the outer limit position that rotate in the french curves outside; Rail chain 20 is multichain sheet short pitch chains, and front end is fixed in chain hole 16, and the rear end is fixed in and is transferred the wheel periphery; The rail chain also can be that flexible tapes such as boundary dimension the rubber that fabric sandwich arranged identical with it, polyamine fat replace.Frame plate 25 is that periphery is porose and be anchored on the plectane of rail plate screw 21, and its center is porose to be assemblied in and to transfer wheel 19 cylindricals to become to change to join, and there is the wide arc groove 26 that is embedded by the rail chain part in the hole near week; The leading portion outer side of arc groove is a curve board slot inner side edge breech face along the track disc of plate axle rotation, back segment inboard with become parallel again after the limit of frame plate center hole is tangent.Like this, it is the circular arc return-enclosure at center with the plate axle that the rail chain leading portion outside has constituted one with back edge 24, it has linked up adjacent curve plate " two uniform velocity cycloid " shape central channel, just forms 360 ° of full circle cycle loops of many curve waveforms, causes roll sleeve loop cycle in the speed governing campaign in groove; Transferring wheel 19 is the porose sheaves in center, is inserted with in the groove to transfer nail 22, is loaded on solar shaft with bearing in the center hole; Connecting rod 18 is the porose arc plates in two ends, and two holes are installed on bar nail 17 and transfer nail; Transferring wheel flange 28 is axle sleeves of tep reel, and dish is contained in Cheng Peizhuan in the frame plate hole week, and the dish side is anchored on the accent wheel, and axle sleeve hole is sleeved on to become to change on the solar shaft joins, and cover has spline in week.Frame plate flange 32 also is the axle sleeve of tep reel, and dish side and frame plate are fastening, and the axle sleeve outer end is stretched out frame and made line shaft, and there is wide square hole 33 at the axle sleeve middle part, and the axle sleeve hole outer end is assemblied in solar shaft with bearing, and the axle sleeve periphery that is assemblied in accent wheel flange is changeed in the inner end with joining.Transferring handle 30 is the axle sleeves that have the screw otic placode, and axle sleeve hole has spline slippery with the spline of transferring wheel flange shaft sleeve cylindrical, and the cylindrical of this axle sleeve is assemblied in the center hole of wide square hole portion and becomes loose running fit; Show the speed dish for tabular, speed cone is carved with on top, the porose frame plate flange shaft sleeve root perimembranous that is tight with in lower end; Fixed have screw thread to 31 heads, be assemblied in and transfer in the handle screw, it can show the place's locking of the different scales of speed dish, unscrew and decide handle and rotate the accent handle, just can be in the big space of wide square hole left-right rotation, transfer the splined hole of sleeve just to drive and transfer wheel flange 28, drive again and transfer wheel 19 to rotate, connecting rod 18 just push-and-pull french curves 14 along 13 rotations of plate axle, and the french curves center line just can be at (C in rotation
a, C
b) in be that each bar curve accurately overlaps one by one with " two uniform velocity cycloid ", relatively locked fixed and show fast each position of coiling, just can fix these coincidence relations.Rotate the planet carrier cover and stretch out rack section, the just motion of controlled work " two uniform velocity cycloid curve " in the groove of french curves of roll sleeve 12, by effects such as one-way driving mechanism, planetary pinion, sun gears, solar shaft just can be at adjustable extent (C
a, C
b) the interior ascending rotating speed of exporting constant speed than C (being uniform motion) one by one.Roll sleeve can be come into another curve board slot by the return-enclosure that rail chain and back edge form again after producing a certain curve board slot, and so constantly shuttling movement has been finished at the uniform velocity speed governing of continuous stepless.Frame (Fig. 9) is made up of cover 35, machine box 36, base plate 37; The machine box becomes barrel-shaped, bung has a plurality of screws, and there is center hole at the bucket end and uses Bearing Installation the axle sleeve of frame plate flange 32, and the peripheral planar of ining succession of bucket makes to install the base plate 37 of usefulness, cover is the porose plectane that is fixed in machine box mouth of periphery, and its center is porose and the planet carrier axle sleeve with Bearing Installation.The axle sleeve of the axle sleeve of solar shaft 5, planet arm 6, frame plate flange 32 is all protractile, forms three line shafts, will be wherein one fix with frame, after remaining two, output shaft that can be used as power wherein then, another part just can be used as power input shaft; One of three projecting shafts part is as do input (or output) axle, and then other two the definite value speed that can work in coordination with the speed of work and (or poor) are exported (or input) axle; Because of the roll sleeve of a plurality of planet wheels is placed in several curve board slots, under the function of one-way driving mechanism " get give up at a high speed low speed value ", make " two uniform velocity cycloid " groove at french curves center only have only extremely short middle part " height is section at the uniform velocity " to play the speed output action, what output speed should be very at the uniform velocity when therefore importing at the uniform velocity.
The research of flexible mathematical method such as, covering approximate and the basic setting of kinology because of successfully having used, initiated " two uniform velocity cycloid " function theory, thereby the high uniform velocity that produces, LINEAR CONTINUOUS, the stepless speed regulation of rigidity on a large scale, therefore not only simple in structurely reach similar two-stage gear transmission and pay, and all very superior at aspects such as transmission stiffness, mechanical efficiency, high-speed smooth, output uniform velocity, anufacturabilities, it can satisfy the high request in all fields such as mechanical engineering, machine tooling, communications and transportation, light textile chemical industry fully.
Claims (7)
1. gear-type high uniform velocity stepless speed change device is characterized in that: it by exterior epicyclic gear be 2, one-way driving mechanism 3, high uniform velocity mathematic curve speed regulating mechanism 1 and frame 4 form; Exterior epicyclic gear system is made up of solar shaft 5, planet arm 6, sun gear 7, planetary pinion 8; The sun gear center is porose and be set on the solar shaft, and both are fastening and be positioned at the train center; The planet arm is the disk of belt length cover, and trepanning is assemblied in solar shaft with bearing, and cover week is loaded on the frame central hole with bearing, all fixing a plurality of planet axis 10 of dish, and each planet wheel 8 with Bearing Installation; One-way driving mechanism 3 is arranged on the planetary pinion, and this mechanism is provided with earhole on the outer collar with steel ball (post) formula one-way driving mechanism commonly used to become eccentric disk 9, and fixed eccentric shaft 11 on the earhole, and pine is being joined roll sleeve 12 and forms on the axle; High uniform velocity mathematic curve speed regulating mechanism is by n group (n=2.3.4. ...) every group be 1 french curves 14, plate axle 13, rail chain 20, bar nail 17, connecting rod 18 and complete machine only one rail plate 15, transfer wheel 19, transfer wheel flange 28, frame plate 25, show speed dish 29, transfer handle 30, fixed 31, composition such as frame plate flange 32; The cross section of french curves is an equal-width groove, and its center of rotation plate axle 13 is positioned on the front of the slot center hole, and there are chain hole 16 and bar nail 17 in its tail end inboard, and the center of curve board slot is specific " two uniform velocity cycloid " function curve:
Speed ratio C is at (C
a, C
b) in get the speed governing ratio that needs most in the use, or get intermediate value (C
a+ C
b)/2, or decide according to precision; Rail plate 15 is that the center has the lateral opening plectane of n group arc, is made up of back edge 23 and 24 two of position-limited edges for every group; Back edge is the track disc of curve board slot outer side breech face along the rotation of plate axle, and the shape of position-limited edge is identical with the outer limit position that french curves rotates outer side surface; Rail chain 20 is multichain sheet short pitch chains, and its front end is fixed on the chain hole 16, and rear end week is due to transferring the wheel periphery; Frame plate 25 is the porose plectanes that are anchored on rail plate screw 21 of periphery, and it has the center hole assembling to become commentaries on classics to join with transferring wheel 19 cylindricals, and there is the wide arc groove 26 that is embedded by rail chain bottom in the hole near week; The outer side of arc groove leading portion is the track disc of curve board slot inner side edge breech face rotation; Adjacent curve plate central channel has been linked up in the rail chain front end outside and the circular arc return-enclosure that back edge 24 constitutes, and just forms 360 ° of full circle cycle loop troughs of many curve waveforms; Transferring wheel 19 is sheaves that center hole is arranged, and is inserted with in the groove to transfer nail 22, and center hole is assemblied in solar shaft with bearing; Connecting rod 18 is the porose arc plates in two ends, and two holes are assemblied in bar nail 17 respectively and transfer nail; Transferring wheel flange 28 is axle sleeves of tep reel, dish be contained in week with the frame plate hole in become to change and join, the dish side is anchored on to transfer wheel, axle sleeve hole to be sleeved on to become to change on the solar shaft joins, overlapping has spline in week; Frame plate flange 32 also is the axle sleeve of tep reel, and dish side and frame plate be week tightly, and there is wide square hole 33 at the axle sleeve middle part, and the outer end of axle sleeve hole is loaded on solar shaft with bearing, and the axle sleeve periphery that is loaded on accent wheel flange is changeed in the inner end with joining; Transferring handle 30 is the axle sleeves that have the screw otic placode, and this axle sleeve hole has spline slippery with the spline of transferring wheel flange shaft sleeve cylindrical, and the cylindrical of this axle sleeve is assemblied in the center hole of wide square hole portion and becomes loose running fit; Show the speed dish for tabular, speed cone is carved with on top, the porose axle sleeve root perimembranous that is tight with at the frame plate flange plate in lower end; Fixed have screw thread to 31 heads, is assemblied in to transfer in the handle screw; Frame is made up of cover 35, machine box 36, base plate 37; The machine box becomes barrel-shaped, bung has a plurality of screws, and bucket has center hole the end and the axle sleeve of frame plate flange with Bearing Installation, the barrel rim flat base plate 37 of ining succession, cover is that periphery is porose and be fixed in the plectane of machine box mouth, and its center is porose and the planet carrier axle sleeve with Bearing Installation.
2. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1, it is characterized in that: exterior epicyclic gear system also can be that to use the new inner planet gear that the internal-round gear wheel forms instead be to replace, as long as it is the center hole and the solar shaft of new planet arm 39 is fastening, again the central part sun gear is changed to taking turns 38 with the interior mutually internal-round gear that meshes of each planetary pinion, become new sun gear, this Gear center has axle sleeve 40, trepanning solar shaft with Bearing Installation, cover week uses Bearing Installation in the frame hole, this cover stretches out frame again and makes line shaft, and other structure is identical with layman's galaxy.
3. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1 is characterized in that: also bearings such as ball, roller can be set between eccentric shaft 11 and the roll sleeve 12.
4. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1, it is characterized in that: the axle sleeve of the axle sleeve of planet arm 6, solar shaft 5, frame plate flange 32 is all protractile, form three line shafts, will be wherein one fix with frame, after remaining two, output shaft that can be used as power wherein then, another part just can make to become power input shaft.
5. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1, it is characterized in that: one of planet arm axle cover, solar shaft and frame plate flange shaft sleeve three projecting shafts part is as do input (or output) axle, and then other two definite values that can work in coordination with the speed of work and (or poor) are exported (or input) axle.
6. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1, it is characterized in that: the rail chain also can replace with flexible tapes such as boundary dimension the polyamine fat that fabric sandwich arranged identical with it, rubber.
7. the described a kind of gear-type high uniform velocity stepless speed change device of claim 1, it is characterized in that: its steel ball (post) formula one-way driving mechanism also can wait with the pawl type one-way driving mechanism and replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99121611 CN1292467A (en) | 1999-10-08 | 1999-10-08 | Gear-type high uniform velocity stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99121611 CN1292467A (en) | 1999-10-08 | 1999-10-08 | Gear-type high uniform velocity stepless speed change device |
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| Publication Number | Publication Date |
|---|---|
| CN1292467A true CN1292467A (en) | 2001-04-25 |
Family
ID=5282048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99121611 Pending CN1292467A (en) | 1999-10-08 | 1999-10-08 | Gear-type high uniform velocity stepless speed change device |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398069B (en) * | 2007-09-24 | 2012-01-11 | 麦妙玲 | Continuously variable transmission |
| WO2014201938A1 (en) * | 2013-06-17 | 2014-12-24 | Xu Yu | Flexibly engaged continuously variable transmission gearbox |
-
1999
- 1999-10-08 CN CN 99121611 patent/CN1292467A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398069B (en) * | 2007-09-24 | 2012-01-11 | 麦妙玲 | Continuously variable transmission |
| WO2014201938A1 (en) * | 2013-06-17 | 2014-12-24 | Xu Yu | Flexibly engaged continuously variable transmission gearbox |
| US10006525B2 (en) | 2013-06-17 | 2018-06-26 | Yu Xu | Flexibly engaged continuously variable transmission gearbox |
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Owner name: BEIJING SITONG TIANGONG MECHANICAL TECHN CO., LTD Free format text: FORMER OWNER: NONE Effective date: 20011011 |
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