CN1314911C - Automatic stepless speed changing device - Google Patents
Automatic stepless speed changing device Download PDFInfo
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- CN1314911C CN1314911C CNB2004100124890A CN200410012489A CN1314911C CN 1314911 C CN1314911 C CN 1314911C CN B2004100124890 A CNB2004100124890 A CN B2004100124890A CN 200410012489 A CN200410012489 A CN 200410012489A CN 1314911 C CN1314911 C CN 1314911C
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- shaft
- rocking arm
- axle
- stepless speed
- oil
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Abstract
The present invention discloses an automatic stepless speed changer. One end of a rocking arm is connected to a crankshaft through a connecting rod, and the other end of the rocking arm is connected to an overrunning clutch through a connecting rod. The overrunning clutch is sheathed on a one-way shaft, and an oil cylinder, a slide block and a spring penetrate in a rocking arm. A hollow speed regulating shaft radially penetrates in the slide block, and both ends of the speed regulating shaft are connected to the slide block positioned by the oil cylinder and the spring. The end of the crankshaft is coaxially connected with an oil pump which is connected with the oil cylinder at one end of the speed regulating shaft through an oil path. The present invention uses a hydraulic system to induce the margin and the lack between input power and output power. By automatically regulating the length proportion of a driving end and a driven end of the rocking arm, thereby, the automatic regulation of the drive speed change proportion is achieved, and thus, a mechanical device of the present invention is installed and used so as to achieve ideal power match.
Description
Technical field
The present invention relates to a kind of mechanical variable speed device, specifically a kind of automatic stepless speed variator.
Background technique
Existing stepless speed variator has the friction type, and its disadvantage is that the life-span is short, and power loss is big; Pulsed is arranged, and its shortcoming is a complex structure, and operating mode is not good when cost height, big at a high speed load, and can control automatically rare.00109979.5 number patent disclosure a kind of " stepless speed variator ", its structure is to be provided with to grind the pendulum-type driving mechanism between input shaft and output shaft, and this driving mechanism includes the constant angular velocity device that joins with input shaft, wobble-plate, by coiling and cardan shaft etc.Realize its described stepless change by grinding the pendulum-type driving mechanism.But this device and what is called are wherein ground the pendulum-type driving mechanism, and not only each bilge construction is relatively complicated, rarely use in mechanical device, and also are difficult for seeing it can realize infinite variable speed principle from disclosed specification.
Summary of the invention
Purpose of the present invention just provides a kind of automatic stepless speed variator of practical, so that mechanical device is adjusted gear ratio automatically, reaches desirable power match.
The present invention is achieved in that this device is an end that connects rocking arm on bent axle by right connecting rod, and the other end of rocking arm is by left link rob free wheel device, and free wheel device is socketed on the one-way shaft.In rocking arm, be installed with inner cylinder, inner slide and inner spring.The hollow speed governing axle of cross-under radially in inner slide.Two of speed governing axle terminates on the slide block of being located by oil cylinder and spring.End at bent axle is coaxially connected with oil pump, and the oil cylinder of this oil pump and speed governing axle one end joins by oil circuit.When bent axle rotates, do oscillating motion around the speed governing axle of institute's cross-under by the rocking arm that right connecting rod drives under input power drives.The left connecting rod that the rocking arm the other end is connect drives free wheel device thereupon and does oscillating motion, and one-way shaft produces unidirectional rotatablely moving under the effect of free wheel device.Because oil pump is coaxial with bent axle, in crankshaft rotating, oil pump can be according to the size of bent axle moment of torsion and the height of rotating speed, by the oil cylinder of oil circuit to the speed governing shaft end, and provide hydraulic oil by the inner cylinder in the axial rocking arm that connects of hollow speed governing, piston promotion slide block and inner slide in each oil cylinder are arrived on the suitable position, thereby make the drive end that is connected across the rocking arm on the speed governing axle and the length respective change of driven end; the amplitude of fluctuation of rocking arm changes thereupon; then finally change the swing speed of free wheel device, makes the output torque of one-way shaft and rotating speed realize the automatic stepless adjusting.
Stepless speed changes devices of the present invention is to induce nargin and deficiency between input power and the output power with hydraulic system, by the drive end of automatic adjustment rocking arm and the length ratio of driven end, and then reach the automatic adjustment of transmission gear shift ratio, make the mechanical device of installing and using stepless speed variator of the present invention reach desirable power match thus.The design that core of the present invention is rocker arm body and itself and being connected of speed governing axle, cooperation are equipped with the induction and the control of hydraulic system on this basis, thereby have realized reliable, mechanical automatic stepless speed change.Rocking arm and the combining form of passing through wherein inner cylinder, inner slide and inner spring have not only guaranteed the motion unanimity of speed governing axle at each point, have also stablized the relative position of rocking arm simultaneously, and this device is operated steadily.The hollow-core construction of speed governing axle also makes it become the asphalt channel of each oil cylinder in parallel, has overcome the drawback that has flexible pipe (oil circuit) in motion thus, has guaranteed the reliable of device.
Description of drawings
Fig. 1 is a structure diagram of the present invention.
Fig. 2 is a partial structurtes schematic representation of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Embodiment
As shown in Figure 1, the basic comprising of speed change gear of the present invention is an end that connects rocking arm 23 on bent axle 9 by right connecting rod 28, and the other end of rocking arm connects free wheel device 24 by left connecting rod 29, and free wheel device 24 is socketed on the one-way shaft 18.In rocking arm 23, be installed with inner cylinder 22, inner slide 21 and inner spring 30.The hollow speed governing axle 25 of cross-under radially in inner slide 21.Two of speed governing axle terminates on the slide block 19 of being located by oil cylinder 20 and spring 31.Be coaxially connected with oil pump 10 in the end of bent axle 9, the oil cylinder of this oil pump and speed governing axle 25 1 ends joins by oil circuit.In this structure, bent axle 9 is as power input shaft, and one-way shaft 18 is as pto.
Because oil pump 10 is coaxial with bent axle 9, when the input power interference, the rotating speed of bent axle can increase, the fuel delivery of oil pump 10 strengthens thereupon, two oil cylinders 20 by hollow speed governing axle 25 parallel connections and the piston in the rocking arm inner cylinder 22 can promote slide block 19 and inner slide 21 separately, and drive speed governing axle 25 and move right.At this moment the drive end of rocking arm 23 shortens, and the driven end lengthening, the amplitude of fluctuation of the left connecting rod 29 that is connected with the rocking arm driven end strengthens, and the rotating speed of free wheel device 24 improves, and the output speed of one-way shaft 18 also just improves thereupon.On the contrary, when input is short of power, the rotating speed of bent axle 9 can descend to some extent, the pressure of oil pump 10 each oil cylinder that offers descends thereupon, under the tension force effect of rocking arm inner spring 30, and under the tension force effect of the spring 31 on speed governing axle 25 slide blocks that two ends connect 19, slide block and inner slide are promoted left, driving speed governing axially moves left, make the drive end lengthening of rocking arm 23, and driven end shortens, the amplitude of fluctuation of left connecting rod 29 reduces, the rotating speed of free wheel device 24 descends, and the output speed of one-way shaft 18 also just descends thereupon.Realized the automatic adjusting of output torque and output speed thus.
As seen from Figure 2, in the casing 33 of gearbox, be fixed with two slip locating pieces 34 respectively by screw 32, the part body double as oil cylinder 20 of locating piece 34, the slide block 19 of piston in the oil cylinder and top (direction as shown) fuses.Each cross-under of the two ends of speed governing axle 25 is fixed in the slide block 19, and the axle center of speed governing axle has oil duct, and this oil duct communicates with oil duct and oil cylinder 20 in the piston by the oil groove on the slide block 19.At the top of slide block 19 apical grafting spring 31.When oil pump oiling pressure increases, piston in the oil cylinder 20 is extrapolated, the elastic force that slide block 19 overcomes spring 31 drive on the speed governing axle 25 and move (oil cylinder in the rocking arm 23 since the central duct by speed governing axle 25 be connected, thereby collaborative and promote the displacement of speed governing axle synchronously).
As seen from Figure 3, rocking arm 23 is a body member, bottom cross-under inner cylinder 22, and piston in the inner cylinder and the inner slide on top 21 fuse.Cross-under speed governing axle 25 in the inner slide, the central oil passage of speed governing axle communicates with oil duct and inner cylinder 22 in the piston by the oil groove in the inner slide.At the top of inner slide 21 apical grafting inner spring 30, the inner spring upper end is fastened on the spring positioning seat of rocking arm 23.The upper end of rocking arm 23 and right connecting rod 28 are rotationally connected, another termination bent axle 9 of right connecting rod 28.The lower end lateral margin and the left connecting rod 29 of rocking arm 23 are rotationally connected, another termination free wheel device 24 of left connecting rod 29, and free wheel device 24 is connected on the one-way shaft 18 by key.
The above-mentioned base main body that is this stepless speed changes devices constitutes, on the basis of above-mentioned basic device, same side in bent axle 9 and one-way shaft 18 can be connected shaft end gear 8 respectively, between two axial ends, be connected to jack shaft 6, be connected to the secondary cone pulley 7 that can be respectively be meshed by sliding on the jack shaft 6 with shaft end gear 8 on bent axle spindle nose or the one-way shaft spindle nose.After increasing this gear drive, can be with jack shaft 6 as power input shaft.When the secondary cone pulley 7 on the jack shaft 6 when shaft end gear 8 on the bent axle 9 is meshed, be above-mentioned automatic stepless speed change mechanism; When secondary cone pulley 7 when shaft end gear on the one-way shaft 18 is meshed, then can walk around rocker arm body, by one-way shaft 18 direct outputting powers.
On this basis, if the outboard end of jack shaft 6 is connect input shaft 16 through clutch 5, then Ci Shi input shaft 16 promptly becomes the power input shaft in this speed change gear.And, by on input shaft, installing clutch 5 additional, can improve the usability of this speed change gear.
Clutch 5 can adopt conventional clutch configurations such as friction clutch, the present invention has provided a kind of buffering clutch, its structure (as shown in Figure 1) is, on input shaft 16, be coaxially connected with buffering oil pump 1, the piston head of the cushion cylinder 4 that joins with buffering oil pump 1 oil circuit is connected on the clutch 5, is serially connected with control valve 3 and pressure fixing valve 2 at the buffering oil pump on the oil circuit with being connected of cushion cylinder.When input shaft 16 rotates, drive 1 work of buffering oil pump.Depress control valve 3, hydraulic oil enters cushion cylinder 4, and piston can promote clutch 5 closures, and power is reached jack shaft 6, again by the engagement of secondary cone pulley 7 with shaft end gear 8, drives bent axle 9 and rotates, and speed change gear can be started working.This buffering clutch by cushion cylinder control has been realized the buffering clutch of gear.Like this, when heavy load starting, can increase detent torque, realize the smooth transition of rotating speed, thereby protect this speed change gear, increase the service life.
In addition, set up clutch 5 after, if be used as power when using foot throttle with internal-combustion engine, the gas pedal clutch pedal that can link, and clutch pedal also can use separately.During idling, internal-combustion engine separates with speed changer; Step on the throttle, clutch is closed simultaneously, and speed changer is promptly started working.
Rocker arm body in this speed change gear is to realize infinite variable speed critical component, and its quantity is many more, and the stationarity of speed change gear work is just good more, and correspondingly volume is also just big more.Generally can select the 2-6 group, under special circumstances, the selection list is organized or also is feasible more than 6 groups.What provide among Fig. 1 is the implementation of three groups of rocker arm bodies, is promptly dividing the inner slide 21 be connected in three right connecting rods 28 being provided with along radially 120 ° of five equilibriums of axle rocking arm 23, three rocking arms identical with three structures all to be socketed on the speed governing axle 25 on the bent axle 9.Be socketed with overstep clovoroom clutch 24 on one-way shaft 18, each free wheel device joins through left connecting rod 29 and a rocking arm 23 respectively.
On the speed change gear basis of above-mentioned various structures, all can an output shaft 15 be set in that the axle head of one-way shaft 18 is other, on the spindle nose of one-way shaft and output shaft 15, be connected a gear graduation driving mechanism.This gear drive is by forming at two speed change gears 12 that connect on the output shaft 15 and three grades of cone pulleys 26 that are slidingly connected on the spindle nose of one-way shaft 18.In addition, also can set up the tumbler gear 27 of realizing the commutation transmission in this gear graduation driving mechanism, this tumbler gear 27 is connected on the little middle transition axle.The corresponding gear 14 that can be meshed that is connected on output shaft 15 with tumbler gear 27.Like this, when three grades of cone pulleys 26 on the one-way shaft 18 are meshed with speed change gear 12 or tumbler gear 27 respectively, can obtain the output variable speed ratio and different turning to of different range section.
Among Fig. 1, on the speed change gear basis of above-mentioned various structures, can be at oil pump 10 series flow control valve 11 of serial connection on the oil circuit that is connected with oil cylinder.Regulate series flow control valve 11, can change the output torque of this stepless speed changes devices.
Claims (8)
1, a kind of automatic stepless speed variator, it is characterized in that this device is to go up an end that connects rocking arm (23) by right connecting rod (28) at bent axle (9); the other end of rocking arm connects free wheel device (24) by left connecting rod (29), and free wheel device (24) is socketed on the one-way shaft (18); In rocking arm (23), be installed with inner cylinder (22), inner slide (21) and inner spring (30); The hollow speed governing axle (25) of cross-under radially in inner slide (21); Two of speed governing axle terminates on the slide block (19) of being located by oil cylinder (20) and spring (31); Be coaxially connected with oil pump (10) in the end of bent axle (9), the oil cylinder of this oil pump and speed governing axle (25) one ends joins by oil circuit.
2, automatic stepless speed variator according to claim 1, it is characterized in that being connected to shaft end gear (8) respectively at the same side of bent axle (9) and one-way shaft (18), between two axial ends, be connected to jack shaft (6), be connected to the secondary cone pulley (7) that can be respectively be meshed by sliding on the jack shaft (6) with shaft end gear (8) on bent axle spindle nose or the one-way shaft spindle nose.
3, automatic stepless speed variator according to claim 2 is characterized in that the outboard end of jack shaft (6) connects input shaft (16) through clutch (5).
4, automatic stepless speed variator according to claim 3, it is characterized in that being coaxially connected with on the input shaft (16) buffering oil pump (1), piston head in the cushion cylinder (4) that joins with buffering oil pump (1) oil circuit is connected on the clutch (5), at the buffering oil pump and be serially connected with control valve (3) and pressure fixing valve (2) being connected of cushion cylinder on the oil circuit.
5, automatic stepless speed variator according to claim 2, it is characterized in that going up three right connecting rods (28) and three rocking arms (23) that structure is identical that divide the radially five equilibrium setting that is connected to the edge axle at bent axle (9), the inner slide in three rocking arms (21) all is socketed on the speed governing axle (25); Be socketed with overstep clovoroom clutch (24) on one-way shaft (18), each free wheel device joins through a left connecting rod (29) and a rocking arm (23) respectively.
6, automatic stepless speed variator according to claim 1 or 5 is characterized in that at the other output shaft (15) that is provided with of the axle head of one-way shaft (18), is connected to the gear graduation driving mechanism on the spindle nose of one-way shaft and output shaft.
7, automatic stepless speed variator according to claim 6 is characterized in that also being provided with the tumbler gear (27) of realizing the commutation transmission in the gear graduation driving mechanism.
8,, it is characterized in that being serially connected with series flow control valve (11) on the oil circuit in oil pump (10) and being connected of oil cylinder according to claim 1,4,5 or 7 described automatic stepless speed variators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100124890A CN1314911C (en) | 2004-08-19 | 2004-08-19 | Automatic stepless speed changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100124890A CN1314911C (en) | 2004-08-19 | 2004-08-19 | Automatic stepless speed changing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598361A CN1598361A (en) | 2005-03-23 |
| CN1314911C true CN1314911C (en) | 2007-05-09 |
Family
ID=34662832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100124890A Expired - Fee Related CN1314911C (en) | 2004-08-19 | 2004-08-19 | Automatic stepless speed changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1314911C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062355A (en) * | 2012-12-27 | 2013-04-24 | 龙宏元 | Stroke-variable elastic continuously-variable transmission or rotary speed controller |
| CN105526324B (en) * | 2014-09-28 | 2018-01-16 | 中国航空工业集团公司西安飞机设计研究所 | A kind of power, the stepless adjustable output device of displacement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545560A (en) * | 1982-03-24 | 1985-10-08 | Dresser Industries, Inc. | Valve coupling |
| CN2078823U (en) * | 1990-04-28 | 1991-06-12 | 宁波海洋渔业公司渔机厂 | Pulsation stepless variable drive |
| CN1281107A (en) * | 2000-08-07 | 2001-01-24 | 万永立 | Stepless speed variator |
| CN2743628Y (en) * | 2004-08-19 | 2005-11-30 | 王平生 | Automatic steploss speed changer |
-
2004
- 2004-08-19 CN CNB2004100124890A patent/CN1314911C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545560A (en) * | 1982-03-24 | 1985-10-08 | Dresser Industries, Inc. | Valve coupling |
| CN2078823U (en) * | 1990-04-28 | 1991-06-12 | 宁波海洋渔业公司渔机厂 | Pulsation stepless variable drive |
| CN1281107A (en) * | 2000-08-07 | 2001-01-24 | 万永立 | Stepless speed variator |
| CN2743628Y (en) * | 2004-08-19 | 2005-11-30 | 王平生 | Automatic steploss speed changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1598361A (en) | 2005-03-23 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20100819 |