CN1594920A - Power transmission device for infinite variable speed mechanism - Google Patents
Power transmission device for infinite variable speed mechanism Download PDFInfo
- Publication number
- CN1594920A CN1594920A CN 200410041361 CN200410041361A CN1594920A CN 1594920 A CN1594920 A CN 1594920A CN 200410041361 CN200410041361 CN 200410041361 CN 200410041361 A CN200410041361 A CN 200410041361A CN 1594920 A CN1594920 A CN 1594920A
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- Prior art keywords
- steel ball
- axle sleeve
- transfer unit
- belt shaft
- pressure plate
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- 230000005540 biological transmission Effects 0.000 title abstract description 17
- 230000007246 mechanism Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
This invention discloses a gear-shifting transmission device, including fixed clamp, axletree with wheels, piston, mobile board with a perforation in the middle of its wimble disk, an axletree cover is vertically stretched out along the circumference of the perforation, the inside of the axletree cover and on the axletree with wheels are arc keyways with steel balls in them; the circumference of the edge of the wimble disk is paralleled with the piston chamber cover stretching out of the bearing cover. Because of the above relating structure, the mobile board of the derailleur is connected with the steel ball of the axletree, and the steel balls are laid three rows of 120 degree parting, so as to assure the steel ball can bear huge pressure when it revolves; the ball and the keyway is point-contacting, so there is no clearance because of friction and therefore avoid hollow journey phenomenon. This invention has strong rigidity, sound balance and improves the transmission efficiency.
Description
Technical field
The present invention relates to a kind of vehicular transmission, specifically relate to a kind of stepless speed variator variable-speed dynamic transfer unit.
Background technique
Usually, stepless speed variator requires movable pressure plate in design in driving pulley rotation synchronously, can also be very easy to realize moving axially, to guarantee the continuous variation of speed ratio.The power transmitting deice that this just requires between movable pressure plate and the driving pulley axle has the characteristic of high bearing stress; Has the characteristic that guarantees that movable pressure plate and driving pulley axle rotate synchronously; Have the movable pressure plate of assurance and be easy to realize axially movable characteristics etc.
Referring to Fig. 1, generally speaking, transmission of power adopts the method for key connecting between stepless speed variator movable pressure plate and the master tape wheel shaft, and main pulley axle and movable pressure plate are rotated synchronously.Key generally adopts the solid steel body, can bear the shearing stress that brings owing to distortion action, realizes the transmission of moment of torsion.Key endwisely slips in keyway, also can realize axial the moving of movable pressure plate.The seal oil chamber of stepless speed variator internal speed-changing part is by constituting between piston cylinder, movable pressure plate awl dish and the piston, and piston cylinder press-fits or is welded on the movable pressure plate.Seal oil chamber has high pressure oil, by the variation of oil pressure, realizes axial the moving of movable pressure plate.
In the said structure, key connecting exists the shortcoming that is difficult to avoid in this technical field of stepless speed variator transmission of power.As in power transmission process, because key and keyway can produce certain clearance after friction after a while, make two axles when just starting, the phenomenon of idle stroke appears in power transmission process, and cause the stationarity in the power transmission process relatively poor; Contact for face between key and the belt shaft, and be the sliding friction campaign between key and the belt shaft, friction factor is often very big, make movable pressure plate do axial motion very smoothly, in oil hydraulic cylinder, will import the more pressure oil of high pressure, produce bigger axial force, will bring inconvenience to control like this, also can consume a lot of energy, transmission efficiency is descended; Awl dish on piston cylinder and the movable pressure plate is a composite structure, because seal oil chamber inner high voltage oil, the welding between piston cylinder and the awl dish or press-fit and can not well guarantee movable pressure plate external structure rigidity and intensity influences transmission of power.
Summary of the invention
Technical problem to be solved by this invention provides a kind of stepless speed variator variable-speed dynamic transfer unit, to reach efficient height, stationarity is good, bearing capacity is strong two transmission shafts of realization carry out axial motion when rotating transmission of power purpose.
For solving the problems of the technologies described above, stepless speed variator variable-speed dynamic transfer unit of the present invention, comprise stationary platen, belt shaft, piston, movable pressure plate, awl disk center on the movable pressure plate is provided with perforation, an axle sleeve is vertically stretched out along the circumference of boring a hole in inboard at the awl dish, be sleeved on the belt shaft, it is characterized in that: be provided with arc keyway, the steel ball that is provided with in the arc keyway on the inboard of axle sleeve, the belt shaft five equilibrium; The inboard of awl dish is parallel to axle sleeve along the circumference at edge and stretches out a piston-cylinder.To adopt steel ball to connect between the movable pressure plate in the stepless speed variator and the belt shaft, and steel ball is that three of the 120 degree five equilibriums of being separated by are arranged and put, be interference fit between steel ball and the arc keyway, magnitude of interference is at 0.009～0.011MM, thereby can guarantee that steel ball bears very big pressure stress when belt shaft and movable pressure plate rotate.Hydraulic cylinder and movable pressure plate are structure as a whole, and have increased the rigidity and the intensity of hydraulic cylinder.
Stepless speed variator variable-speed dynamic transfer unit, the bottom of the arc keyway of described axle sleeve inboard is provided with an oil groove.The effect of this oil groove is lubricated, cools off steel ball.
Stepless speed variator variable-speed dynamic transfer unit, an end of the arc keyway of described axle sleeve inboard is provided with postioning abutment.
Stepless speed variator variable-speed dynamic transfer unit, described spherical Keyway Section radius of arc is greater than the steel ball radius.Because the cross section radius of arc of spherical keyway is different from the radius of steel ball, so in steel ball is placed on spherical keyway the time, spherical Keyway Section circular arc is not concentric with steel ball.For point contacts, so steel ball can make PURE ROLLING under the effect of less axial force, reduced friction, makes movable pressure plate do axial motion very smoothly between steel ball and the spherical keyway.
Stepless speed variator variable-speed dynamic transfer unit, the external diameter of described hydraulic cylinder is equal to or less than the external diameter of awl dish.
Stepless speed variator variable-speed dynamic transfer unit, owing to adopted said structure, compared with prior art: will adopt steel ball to connect between the movable pressure plate in the stepless speed variator and the belt shaft, and steel ball is that three of the 120 degree five equilibriums of being separated by are arranged and put, thereby can guarantee that steel ball can bear very big pressure stress when belt shaft and movable pressure plate rotate; Because arc key slot cross-section radius of arc is greater than the radius of steel ball, contact for putting between steel ball and the arc keyway, therefore, steel ball can be under the effect of less axial force, and PURE ROLLING has reduced friction, makes movable pressure plate do axial motion very smoothly.Overcome the gap of bringing owing to abrasion, thereby avoided the idle stroke phenomenon that occurs in power transmission process, stationarity is good, has improved transmission efficiency; Hydraulic cylinder and movable pressure plate are structure as a whole, and have increased the rigidity and the intensity of power transmitting deice.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments;
Fig. 1 is a stepless speed variator variable-speed dynamic transfer unit structural representation;
Fig. 2 is a stepless speed variator variable-speed dynamic transfer unit structural representation of the present invention
Fig. 3 is stepless speed variator variable-speed dynamic transfer unit steel ball of the present invention and the equipped schematic representation of arc keyway;
In Fig. 1, Fig. 2, Fig. 3,1, stationary platen; 2, movable pressure plate; 3, awl dish; 4, oilhole; 5, axle sleeve, 6, belt shaft; 7, steel ball; 8, arc keyway; 9, oil groove; 10, postioning abutment; 11, piston-cylinder; 12, piston; 13, hydraulic fluid chamber.
Embodiment
As Fig. 2, shown in Figure 3, stepless speed variator variable-speed dynamic transfer unit, comprise stationary platen 1, belt shaft 6, piston 12, movable pressure plate 2, awl on the movable pressure plate 2 coils 3 centers and is provided with perforation, an axle sleeve 5 is vertically stretched out along the circumference of boring a hole in inboard at awl dish 3, be sleeved on the belt shaft 6, be provided with spherical keyway 8 on the inboard of axle sleeve 5, the belt shaft 6 five equilibrium, establish three steel balls 7 in the spherical keyway 8; The inboard of awl dish is parallel to axle sleeve 5 along the circumference at edge and stretches out a hydraulic cylinder 11.To adopt steel ball 7 to connect between the movable pressure plate in the stepless speed variator 2 and the belt shaft 6, and steel ball 7 is arranged for three of the 120 degree five equilibriums of being separated by and is put, the diameter of steel ball is about 6MM, the cross section radius of arc of shape keyway 8 is about 3.078MM, be interference fit between steel ball 7 and the spherical keyway 8, magnitude of interference is at 0.009～0.011MM, and when steel ball 7 was placed in the spherical keyway 8, spherical keyway 8 cross section circular arcs were not concentric with steel ball 7.Have only several points to contact between steel ball 7 and the spherical keyway 8, steel ball 7 can bear very big pressure stress when belt shaft 6 and movable pressure plate 2 rotate.Movable pressure plate 2 is with belt shaft 6 rotations, and the oil pressure by in the oil inlet hole 4 control hydraulic fluid chambers 13 makes movable pressure plate 2 axially produce different displacements along belt shaft 6, and speed ratio is constantly changed, and passes to the different rotating speed of belt wheel mechanism output.Because steel ball 7 itself carries out rolling motion,, realize transmission of power under the effect of less axial force so steel ball 7 can move axially movable pressure plate 2 very smoothly.Because piston-cylinder 11 is structure as a whole with movable pressure plate 2; Piston-cylinder 11 is the same center of circle with axle sleeve 5; Not only add the concentricity that can well guarantee piston-cylinder 11 and axle sleeve 5 man-hour, and increased the rigidity and the intensity of hydraulic cylinder 11.
As Fig. 2, shown in Figure 3, the bottom of the spherical keyway 8 of axle sleeve 5 inboards is provided with an oil groove 9.The effect of this oil groove 9 is lubricated, cools off the steel ball 7 of centre, improves the working life of steel ball 7.One end of spherical keyway 8 is provided with postioning abutment 10, and the effect of this postioning abutment 10 is the rollings that stop steel ball 7, to determine the maximum axial displacement amount of movable pressure plate 2 on belt shaft 6.
Obviously, those skilled in the art can carry out various changes and modification to stepless speed variator variable-speed dynamic transfer unit of the present invention and not break away from the spirit and scope of the present invention like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1, stepless speed variator variable-speed dynamic transfer unit, comprise stationary platen (1), belt shaft (6), piston (12), movable pressure plate (2), awl dish (3) center on the movable pressure plate (2) is provided with perforation, an axle sleeve (5) is vertically stretched out along the circumference of boring a hole in inboard at awl dish (3), be sleeved on the belt shaft (6), axle sleeve (5) is provided with the oilhole (4) that communicates with hydraulic fluid chamber (13), it is characterized in that: the inboard of axle sleeve (5), belt shaft (6) are provided with arc keyway (8) with going up five equilibrium, are provided with steel ball (7) in the arc keyway (8); The inboard of awl dish (3) is parallel to axle sleeve (5) along the circumference at edge and stretches out a piston-cylinder (11).
2, stepless speed variator variable-speed dynamic transfer unit according to claim 1 is characterized in that: the bottom that described axle sleeve (5) is inboard, belt shaft (6) is gone up arc keyway (8) is provided with an oil groove (9).
3, stepless speed variator variable-speed dynamic transfer unit according to claim 1 and 2 is characterized in that: the end that described axle sleeve (5) is inboard, belt shaft (6) is gone up arc keyway (8) is respectively equipped with postioning abutment (10).
4, stepless speed variator variable-speed dynamic transfer unit according to claim 1 and 2 is characterized in that: described arc keyway (8) cross section radius of arc is greater than steel ball (7) radius.
5, stepless speed variator variable-speed dynamic transfer unit according to claim 1 is characterized in that: the external diameter of described piston-cylinder (11) is equal to or less than the external diameter of awl dish (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041361 CN1594920A (en) | 2004-07-09 | 2004-07-09 | Power transmission device for infinite variable speed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041361 CN1594920A (en) | 2004-07-09 | 2004-07-09 | Power transmission device for infinite variable speed mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN1594920A true CN1594920A (en) | 2005-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410041361 Pending CN1594920A (en) | 2004-07-09 | 2004-07-09 | Power transmission device for infinite variable speed mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062900B (en) * | 2006-04-26 | 2012-04-11 | 上海博润石化科技发展有限公司 | Hydrogenation method for absorbed gas isophthalonitrile |
| CN102506978A (en) * | 2011-10-24 | 2012-06-20 | 北京航天计量测试技术研究所 | Force follow-up transmission device |
| CN104214325A (en) * | 2013-05-30 | 2014-12-17 | 崴立机电（苏州）有限公司 | Tooth space control device for staggered teeth of double gears |
| CN110701266A (en) * | 2018-07-09 | 2020-01-17 | 本田技研工业株式会社 | Control device for power transmission device |
-
2004
- 2004-07-09 CN CN 200410041361 patent/CN1594920A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062900B (en) * | 2006-04-26 | 2012-04-11 | 上海博润石化科技发展有限公司 | Hydrogenation method for absorbed gas isophthalonitrile |
| CN102506978A (en) * | 2011-10-24 | 2012-06-20 | 北京航天计量测试技术研究所 | Force follow-up transmission device |
| CN104214325A (en) * | 2013-05-30 | 2014-12-17 | 崴立机电（苏州）有限公司 | Tooth space control device for staggered teeth of double gears |
| CN104214325B (en) * | 2013-05-30 | 2016-12-28 | 崴立机电（苏州）有限公司 | Bidentate side set backlash controls device |
| CN110701266A (en) * | 2018-07-09 | 2020-01-17 | 本田技研工业株式会社 | Control device for power transmission device |
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