CN104154199B - A kind of swing arm impulse stepless gear box - Google Patents
A kind of swing arm impulse stepless gear box Download PDFInfo
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- CN104154199B CN104154199B CN201410353343.6A CN201410353343A CN104154199B CN 104154199 B CN104154199 B CN 104154199B CN 201410353343 A CN201410353343 A CN 201410353343A CN 104154199 B CN104154199 B CN 104154199B
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Abstract
A kind of swing arm impulse stepless gear box, it includes running part, speed-ratio regulation part and output part.An eccentric it is fixed with on the power shaft of described running part, a rolling bearing it is installed with outside eccentric, it couples with a side roll of the lower swing arm of transmission swing arm, the speed regulating bearing outer ring arranged on left and right sides of ratio adjusting mechanism couples with the side of transmission swing arm top link and a side roll of output swing arm respectively, and it rolls the contact position coupled and manually can regulate speed adjusting lever and change.The output swing arm of output part can have output drive gear around the axis oscillating of take-off (propeller) shaft on take-off (propeller) shaft, output drive gear engages with output gear, and output gear is fixedly connected on output shaft by key.
Description
Technical field
The present invention relates to a kind of swing arm impulse stepless gear box, particularly relate to the speed regulative mode of a kind of impulse stepless gear box.
Background technology
Along with economic develops rapidly, the demand of power is got more and more in productive life by people, the demand in terms of speed governing is often related to during power uses, great majority are taken turns by multiple sets of teeth and are realized at present, but this gear structure raising speed is slow, safety is low, it is high to consume energy and easy to wear, still await technological innovation；Impulse stepless gear box has the advantages such as reliable operation, speed adjustable range is wide, mode of speed regulation is many, is widely used at industrial circle tools such as pharmacy, food, weaving, chemical industry, light industry, plastics, papermaking at present；Stepless pulsation speed variator has a variety of technical scheme in the prior art, but general all structures are complicated, manufacturing cost is high, and rotating ratio regulation is the most relatively difficult, is not the most provided that low-down rotating ratio.Some technical scheme security performance is low, raising speed slow, power consumption height still awaits technological innovation.
The Chinese invention patent application of Application No. 201210017062.4 discloses a kind of novel impulse stepless gear box, this buncher is made up of casing, active part, output part and speed-ratio regulation part, use manual governing handle adjusting speed ratio, can be with dynamic speed adjustment, it is also possible to static speed governing and minimum speed ratio can be zero.But the part of its speed adjusting gear is the most, and structure is relatively complicated.
The Chinese invention patent application of Application No. 89201734.1 discloses a kind of oscillating-block pulsating-mechanical stepless speed-changing device, and it is by means of eccentric disc and the stepless gear drive of freewheel clutch pulsating；This variator overcomes the problems such as the advanceto returntime ratio of main unit mechanism changes in speed governing, the pulsation curves of output shaft rotating speed is irregular change, mechanical efficiency is low with frame or the change of crank length, when having speed change, main machine frame relativeness is constant, forward and reverse output that all can work, advanceto returntime ratio value is constant, the advantages such as output is steady, but its structure is complicated, huge, manufacturing cost is high, maintenance difficult, rotating ratio regulation is the most relatively difficult, the most it is not provided that low-down rotating ratio, such as zero-turn speed ratio.
Summary of the invention
It is an object of the invention to provide a kind of simple and compact for structure, low cost of manufacture, easy to maintenance simply, take up room little, using manual governing handle adjusting speed ratio, speed governing is convenient, and speed adjusting gear is simple and practical, can be with dynamic speed adjustment, can also static speed governing, and minimum speed ratio can be zero, and range is big, security performance is good, the swing arm impulse stepless gear box that raising speed is fast.
The present invention includes running part, output part and speed-ratio regulation part；Running part includes power shaft, eccentric, eccentric rolling bearing, transmission swing arm, swing arm bearing, transmission swing arm spring, drive mechanism casing；Speed-ratio regulation part includes speed adjusting lever, little axle, fixing bearing, speed governing contiguous block, speed governing connecting shaft, speed regulating bearing；Output unit is divided and is included exporting swing arm, freewheel clutch, output swing arm spring, take-off (propeller) shaft, output drive gear, output shaft, output gear, output mechanism casing, cover plate, baffle plate.
Power shaft and output shaft are respectively rotatably arranged on casing；Power shaft one end is connected to eccentric by being bonded, and eccentric is fixed with a rolling bearing.Transmission swing arm is installed in rotation on transmission case body by swing arm bearing, transmission swing arm is divided into top link and lower swing arm, transmission swing arm spring contacts with the side of lower swing arm, its spring force make lower swing arm remain with the housing washer on eccentric rolling couple.When power shaft band movable eccentric wheel and eccentric rolling bearing rotate, owing to there is eccentric throw, eccentric housing washer can drive transmission swing arm to do cycloid motion.The fixing bearing of speed adjusting gear is fixedly mounted on speed adjusting lever, little axle is arranged on fixing bearing, the two ends of little axle are installed with a speed governing contiguous block respectively, the other end of speed governing contiguous block has axis hole, one speed governing connecting shaft is arranged in axis hole, and the two ends, left and right of speed governing connecting shaft are separately installed with speed regulating bearing.The speed regulating bearing center at two ends, left and right is maintained on same axis direction with speed governing connecting shaft all the time.The speed regulating bearing outer ring of left end keeps rolling with transmission swing arm and couples, the speed regulating bearing outer ring of right-hand member keeps rolling with output swing arm and couples, output swing arm side with output swing arm spring interface touch, its spring force make output swing arm remain with the speed regulating bearing of right-hand member roll couple.Speed regulating bearing front and back can be clamped in position that transmission swing arm contacts with left end speed regulating bearing outer ring and the position that output swing arm contacts with right-hand member speed regulating bearing outer ring, make speed regulating bearing when not rotating speed adjusting lever and the contact position of swing arm immobilizes.When rotating speed adjusting lever, the most also rotate the position changing little axle, and drive speed governing contiguous block to change the contact position of speed regulating bearing outer ring and swing arm.When left end speed regulating bearing is away from the center of rotation of transmission swing arm, the pivot angle that transmission swing arm passes to speed regulating bearing is the biggest, when left end speed regulating bearing is the closer to transmission swing arm center of rotation, pivot angle is the least, when the center of speed regulating bearing is in same straight line with the center of rotation of transmission swing arm, speed regulating bearing will not do cycloid motion.Left and right two ends speed regulating bearing is connected by speed governing connecting shaft so that it is have same pendulum angle and swing speed.The other end of output swing arm is fixedly connected on the outer shroud of freewheel clutch, and the star-wheel of freewheel clutch is connected with take-off (propeller) shaft by key, and output swing arm can do cycloid motion around the axis of take-off (propeller) shaft.Right for speed adjusting gear speed regulating bearing is passed to export swinging back and forth of swing arm and is converted into the interval unidirectional rotary motion of take-off (propeller) shaft by freewheel clutch.Take-off (propeller) shaft is provided with output transmission roller gear, and output roller gear is connected with take-off (propeller) shaft by key.Output drive gear engages with output gear, and output gear is connected with output shaft by key.Transmission swing arm, swing arm bearing, transmission swing arm spring, little axle, fixing bearing, speed governing contiguous block, speed governing connecting shaft, speed regulating bearing, output swing arm, freewheel clutch, output swing arm spring, take-off (propeller) shaft, output drive gear are complete set parts, for enabling output shaft continuous and stable one-directional rotation, in casing, it is uniformly distributed these parts of three sets on circumference with the axis of power shaft as the center of circle.
Medium speed ratio of the present invention is relevant with the pivot angle size of output swing arm, and pivot angle is the biggest, and speed ratio is the biggest, otherwise the least.It is relevant that the size of the pivot angle of the output swing arm in variator of the present invention rolls, with left speed regulating bearing outer ring and transmission swing arm, the contact position coupled, when left speed regulating bearing is away from the center of rotation of transmission swing arm, its pivot angle passing to export swing arm is the biggest, when it is near the center of rotation of transmission swing arm, its pivot angle passing to export swing arm is the least, until pivot angle is zero.The speed-ratio regulation of the swing arm impulse stepless gear box of the present invention is to be realized relative to the position of transmission swing arm center of rotation by regulation left end speed regulating bearing, can regulate when left end speed regulating bearing outer ring and transmission swing arm rolling couples the position relative to transmission swing arm center of rotation by rotating speed adjusting lever.Can be with dynamic speed adjustment, it is also possible to static speed governing.Owing to speed regulating bearing may be located at the position of transmission swing arm rotary centerline, its pivot angle is zero, so minimum speed ratio can be zero.
Accompanying drawing explanation
It is more fully described a kind of swing arm impulse stepless gear box according to the present invention below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of a preferred embodiment of the swing arm impulse stepless gear box according to the present invention.
Fig. 2 is that the running part of the preferred embodiment of the swing arm impulse stepless gear box according to the present invention shown in Fig. 1 assembles structural side view with speed-ratio regulation part.
Fig. 3 is that the output part of the preferred embodiment of the swing arm impulse stepless gear box according to the present invention shown in Fig. 1 assembles structural side view with speed-ratio regulation part.
Figure is labeled as: eccentric rolling bearing 1, eccentric 2, power shaft 3, speed governing connecting shaft 4, left speed regulating bearing 5, right speed regulating bearing 6, transmission swing arm 7, transmission swing arm bearing 8, transmission swing arm spring 9, drive mechanism casing 10, speed governing contiguous block 11, fixing bearing 12, speed adjusting lever 13, little axle 14, output swing arm 15, freewheel clutch 16, take-off (propeller) shaft 17, output swing arm spring 18, output drive gear 19, cover plate 20, baffle plate 21, output shaft 22, output gear 23, output mechanism casing 24.
Detailed description of the invention
In order to be better understood from the present invention, being described in detail a preferred embodiment of the swing arm impulse stepless gear box of the present invention below in conjunction with the accompanying drawings, description below is only exemplary and explanatory, should not have any restriction effect to protection scope of the present invention.
The embodiment according to the swing arm impulse stepless gear box of the present invention as shown in Figure 1 to Figure 3 includes running part, output part and speed-ratio regulation part.Described running part includes power shaft 3, eccentric 2, eccentric rolling bearing 1, transmission swing arm 7, swing arm bearing 8, transmission swing arm spring 9, drive mechanism casing 10；Output unit is divided and is included exporting swing arm 15, freewheel clutch 16, output swing arm spring 18, take-off (propeller) shaft 17, output drive gear 19, output shaft 22, output gear 23, cover plate 20, baffle plate 21, output mechanism casing 24.Speed-ratio regulation part includes speed adjusting lever 13, little axle 14, fixing bearing 12, speed governing contiguous block 11, speed governing connecting shaft 4, left speed regulating bearing 5, right speed regulating bearing 6.
As shown in drawings, one end of power shaft 3 is installed with an eccentric 2, and eccentric 2 is fixed with a rolling bearing 1, and the outer ring of rolling bearing 1 couples with a side roll of transmission swing arm 7.Transmission swing arm 7 is divided into top link and lower swing arm, the lower swing arm of transmission swing arm 7 remains that under the spring-force driven dual of transmission swing arm spring 9 outer ring with eccentric rolling bearing 1 rolls and contacts, on the rotating swing arm bearing 8 being arranged in transmission case body 10 of transmission swing arm 7, the side of the top link of transmission swing arm rolls with the outer ring of the left speed regulating bearing 5 of speed adjusting gear and contacts.Left speed regulating bearing 5 is fixedly mounted in speed governing connecting shaft 4 with right speed regulating bearing 6, and remain at same axis direction, speed governing connecting shaft 4 is fixedly mounted on again on the axis hole of speed governing connecting plate 11 one end, the other end of speed governing connecting plate 11 is arranged on rotating little axle 14, and little axle 14 is positioned on speed adjusting lever by fixing bearing 12.Left speed regulating bearing 5, right speed regulating bearing 6, speed governing connecting shaft 4, speed governing connecting plate 11 and little axle 14 can rotate around the axis of little axle 14 as an entirety.Speed regulating bearing 5, speed regulating bearing 6, speed governing connecting plate 11 axis around little axle together with little axle 14 will be driven to swing back and forth when cycloid motion is done in transmission swing arm 7.The outer ring of right speed regulating bearing 6 contacts with the side of output swing arm 15.The cycloid motion of right speed regulating bearing 6 drives output swing arm 15 to do cycloid motion, and output swing arm 15 remains that under the effect of the spring force of output swing arm spring 18 outer ring with right speed regulating bearing 6 rolls and contacts.Rotation direction when transmission swing arm 7 does cycloid motion with output swing arm 15 is contrary, and it is contrary with the orientation that left speed regulating bearing 5 and right speed regulating bearing 6 contact respectively, left speed regulating bearing 5 and right speed regulating bearing 6 can be clamped so that it is the invariant position each contacted when not rotating speed adjusting lever 13 with swing arm.When rotating speed adjusting lever 13, the most also rotate the position changing little axle 14 simultaneously, and drive speed governing contiguous block 11, speed governing connecting shaft 4, left speed regulating bearing 5 and right speed regulating bearing 6 to rotate around the axis of its little axle 14 thus change left speed regulating bearing 5 outer ring and roll contact position when coupling and right speed regulating bearing 6 outer ring with transmission swing arm 7 top link and contact position when exporting swing arm 15 rolling and couple.When left end speed regulating bearing 5 is away from the center of rotation of transmission swing arm 7, transmission swing arm 7 passes to left speed regulating bearing 5 pivot angle when doing cycloid motion is the biggest, when left end speed regulating bearing 5 is closer to the center of rotation of transmission swing arm 7, transmission swing arm 7 passes to left speed regulating bearing 5 pivot angle when doing cycloid motion is the least, when the center of left speed regulating bearing 5 and the rotary centerline of transmission swing arm 7 are in same straight line, left speed regulating bearing 5 will not swing.Left speed regulating bearing 5 and right speed regulating bearing 6 connect by speed governing connecting shaft 4 is fixing, it is made to have same pendulum angle and swing speed, so, output swing arm 15 can be driven when right speed regulating bearing 6 does cycloid motion to swing so that it is have identical pendulum angle and swing speed.One end of output swing arm 15 is fixedly connected on the outer shroud of freewheel clutch 16, and the star-wheel of freewheel clutch 16 is connected with take-off (propeller) shaft 17 by key, and output swing arm 15 can do cycloid motion around the axis of take-off (propeller) shaft 17.Speed adjusting gear right-hand member speed regulating bearing 6 is passed to export swinging back and forth of swing arm 15 and is converted into the interval unidirectional rotary motion of take-off (propeller) shaft 17 by freewheel clutch 17, output transmission roller gear 19 is followed take-off (propeller) shaft 17 and is rotated, owing to output drive gear 19 engages with output gear 23, output transmission roller gear 19 makes output gear 23 rotate with it when rotating, output gear 23 is connected with output shaft 22, so output shaft 22 also can rotate by key.
The swing arm impulse stepless gear box of the present invention, is not only simple in structure, compact, and variator ratio range is big, and speed change is flexible, is possible not only to the speed change when shutting down, it is also possible to the speed change when machine run, its speed adjusting gear is simple and practical, takes up room little.According in the swing arm impulse stepless gear box of the present invention, rotating ratio is relevant with the pivot angle size of output swing arm 15, and pivot angle is the biggest, and speed ratio is the biggest, otherwise then speed ratio is the least.The size of the pivot angle of the output swing arm 15 in a kind of swing arm impulse stepless gear box of the present invention is relevant with the relative position of the rotary centerline of speed regulating bearing 5 and transmission swing arm 7, when speed regulating bearing 5 is the nearest relative to the center of rotation of transmission swing arm 7 distance, speed ratio is the least, when speed regulating bearing 5 is the most remote relative to transmission swing arm center of rotation distance, and speed ratio is the biggest.Therefore the speed-ratio regulation of the present invention is to be realized relative to the position of the center of rotation of transmission swing arm 7 by regulation speed regulating bearing 5.
Claims (4)
1. a swing arm impulse stepless gear box, including running part, output part and speed-ratio regulation part；Described running part includes power shaft, eccentric, eccentric rolling bearing, transmission swing arm, swing arm bearing, transmission swing arm spring, drive mechanism casing, and its speed-ratio regulation part includes speed adjusting lever, little axle, fixing bearing, speed governing contiguous block, speed governing connecting shaft, speed regulating bearing；Described output unit is divided and is included exporting swing arm, freewheel clutch, output swing arm spring, take-off (propeller) shaft, output drive gear, output shaft, output gear, output mechanism casing, cover plate, baffle plate；It is characterized in that: be separately installed with speed regulating bearing at the two ends, left and right of speed governing connecting shaft, be arranged on left end for left speed regulating bearing, be arranged on right-hand member for right speed regulating bearing, described running part passes through transmission swing arm and contacts with the rolling of left speed regulating bearing outer ring with speed-ratio regulation part, and described output part is contacted with the rolling of right speed regulating bearing outer ring by output swing arm with speed-ratio regulation part；Described left speed regulating bearing and right speed regulating bearing are fixed in same speed governing connecting shaft, and described little axle is arranged on fixing bearing, and described fixing bearing is fixedly mounted on speed adjusting lever；Described speed regulating bearing, speed governing contiguous block, speed governing connecting shaft can swing around the little axle in fixing bearing as a set of speed-regulating part；Being provided with an eccentric on described power shaft, be fixed with an eccentric rolling bearing outside described eccentric, one end of described output swing arm is fixing with described freewheel clutch to be connected, and described freewheel clutch is arranged on take-off (propeller) shaft；Described take-off (propeller) shaft is provided with output drive gear, and described output drive gear engages with output gear, and described output gear is arranged on output shaft.
A kind of swing arm impulse stepless gear box the most according to claim 1, it is characterized in that: the transmission swing arm of described running part is divided into top link and lower swing arm, top link rolls with the left speed regulating bearing outer ring of speed-ratio regulation part and contacts, and lower swing arm remains under the effect of transmission swing arm spring force that with the eccentric housing washer of described running part rolling contacts；The output swing arm of described output part keeps rolling with the outer ring of the right speed regulating bearing of speed-ratio regulation part all the time under the active force of output swing arm spring force and contacts.
A kind of swing arm impulse stepless gear box the most according to claim 1 and 2, it is characterized in that: described transmission swing arm can rotate around it center and do cycloid motion, described output swing arm is fixedly connected on freewheel clutch outer shroud, and can do cycloid motion around take-off (propeller) shaft.
A kind of swing arm impulse stepless gear box the most according to claim 1, it is characterized in that: the left and right speed regulating bearing of described speed-ratio regulation part, speed governing connecting shaft and speed governing contiguous block can swing around the little axle of speed-ratio regulation part by rotating speed adjusting lever simultaneously, thus change left speed regulating bearing outer ring and couple contact position with transmission swing arm and right speed regulating bearing outer ring with the rolling of output swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353343.6A CN104154199B (en) | 2014-07-24 | A kind of swing arm impulse stepless gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353343.6A CN104154199B (en) | 2014-07-24 | A kind of swing arm impulse stepless gear box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154199A CN104154199A (en) | 2014-11-19 |
| CN104154199B true CN104154199B (en) | 2017-01-04 |
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Granted publication date: 20170104 Termination date: 20200724 |