CN2114064U - Harmonic chain variable-speed gearing - Google Patents
Harmonic chain variable-speed gearing Download PDFInfo
- Publication number
- CN2114064U CN2114064U CN 92214240 CN92214240U CN2114064U CN 2114064 U CN2114064 U CN 2114064U CN 92214240 CN92214240 CN 92214240 CN 92214240 U CN92214240 U CN 92214240U CN 2114064 U CN2114064 U CN 2114064U
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- CN
- China
- Prior art keywords
- cam
- chain
- foreign steamer
- closed chain
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Gears, Cams (AREA)
Abstract
The utility model provides a harmonic chain type variable-speed driving device which comprises a rigid outer wheel and a cam. The utility model is characterized in that a closed chain is arranged on the cam, and a driving roller matched with the closed chain is arranged on the rigid outer wheel. The utility model can be assembled into various driving mechanisms with acceleration, speed reduction, rotation in the same or reverse directions and variable transmission ratios.
Description
The utility model relates to a kind of driver of mechanical speed change transmission, particularly a kind of harmonic wave chain type speed change driver.
A kind of harmonic gear speed change driver is arranged, and is to transmit mechanical motion by the resiliently deformable of compliant member.It is by rigid internal gear, the flexible external gear of the few several teeth of specific rigidity internal gear, be sleeved in the flexible external gear the deformable thin-wall bearing and with its cross section that thin-wall bearing matches be that oval-shaped cam is formed, rotation along with cam; flexible bending deflection takes place for thin-wall bearing and flexible external gear; protrude or recessed place at flexible external gear; flexible external gear and rigid internal gear just in time mesh or throw off; and in other place, flexible external gear and rigid internal gear are in state engaging-in or that nibble out.When cam rotates continuously,, realize the transmission of mechanical motion by this displacement because the few several teeth of flexible external gear specific rigidity internal gear will produce relative displacement between rigid internal gear and the flexible external gear in thin-wall bearing.Above-mentioned harmonic gear speed change driver exists following shortcoming: driver is to adopt the resiliently deformable of parts to transmit mechanical motion, therefore to the material requirements height of flexible external gear and thin-wall bearing, difficulty of processing is big, be subjected to the restriction of flexible external gear and the counter-bending fatigue strength of thin-wall bearing, the velocity ratio of driver can not be lower than 50, and the operating life of driver is short, and starting force is apart from big.
The purpose of this utility model is to overcome above-mentioned deficiency and a kind of harmonic wave chain type speed change driver is provided.
The utility model relates to a kind of harmonic wave chain type speed change driver, comprises rigidity foreign steamer and cam, and closed chain is arranged on the cam, and the drive balls that matches with closed chain is arranged on the rigidity foreign steamer.When cam rotates continuously, the position of closed chain distortion is with the change of continuous generating period, make the chain link of closed chain and the drive balls on the rigidity foreign steamer by engaging-in, mesh, nibble out, throw off, engaging-in again ... change again and again, transmit gear motion.As long as change the master of rigidity foreign steamer, chain, cam, driven relation, and above-mentioned thrin is fixed just can be formed speedup, deceleration, in the same way or the multiple driving mechanism of counter-rotating.
Above-mentioned drive balls is a cylindrical roller, also can be tapered roller or sleeve-barrel roollr, and cylindrical roller equidistantly respectively is distributed on the interior along last of rigidity foreign steamer, and the chain number of the closed chain that the sum of cylindrical roller matches more with it is many more than one.Closed chain is a bush roller chain, cylindrical roller can be Duoed 1 than the chain number of bush roller chain, 2 ... the velocity ratio of above-mentioned driving mechanism can be changed, during cam rotation, chain is out of shape with cam, in the relevant position that cam protrudes, being loaded on the teeth that cylindrical roller on the rigidity foreign steamer and the roller on the closed chain be equivalent to gear intermeshes, because the chain number of closed chain is less than the cylindrical roller on the rigidity foreign steamer, when closed chain being fixed (deformable but not with cam rotation), when cam rotated continuously as driving wheel, the rigidity foreign steamer was then as the follower rotation of slowing down in the same way thereupon.
The utility model is compared with existing harmonic gear speed change driver has following advantage:
1, the utility model has replaced thin-wall bearing and flexible external gear in the harmonic gear speed change driver with closed chain, parts have fundamentally been eliminated because of the continuous flexural fatigue that produces of bending deflection repeatedly, therefore no longer need the high special material of counter-bending fatigue strength, the velocity ratio of driver is not subjected to the restriction of counter-bending fatigue strength, thereby make reliable operation of the present utility model, life-span is long, and is applied widely.
2, the utility model has replaced teeth on the former rigid internal gear with cylindrical roller, and teeth are engaging-in nibbles out the sliding friction that is produced thereby eliminated, and has reduced power consumption.
3, eliminate parts because of the caused power consumpiton of elastic bending deflection, reduced the starting force distance, improved transmission efficiency.
4, the shape of cross section of cam no longer is confined to ellipse.
5, simple in structure, manufacturing is easy, and cost is low.
6,, can constitute and have that multiple velocity ratio changes and with the variable speed drive of clutch function if the utility model of several different drive ratios is fitted together.Can be widely used in various mechanical devices as lathe, the traffic tool, crane crab etc.
Fig. 1 first kind of embodiment's of the present utility model structure diagram.
The sectional drawing that Fig. 2 cuts open along shaft axis for structure diagram shown in Figure 1.
Fig. 3 second kind of embodiment's of the present utility model structure diagram.
Fig. 4 the third embodiment's of the present utility model structure diagram.
The sectional drawing that Fig. 5 cuts open along shaft axis for structure diagram shown in Figure 4.
Embodiment one:
Fig. 1 and Fig. 2 have described first kind of embodiment of the present utility model.It comprises rigidity foreign steamer 1 and cam 2, the shape of cross section of cam 2 is positive triangle, cam 2 is fixed with one with frame 3, closed chain 4 is arranged on the outer of cam 2, closed chain 4 adopts bush roller chain, the chain number of closed chain 4 is 200, the rear portion of the bearing pin 5 on the closed chain 4 is passed carrier bar and is connected with transmission shaft 6, and transmission of movement is gone out by transmission shaft, rigidity foreign steamer 1 drives by the driving shaft that is attached thereto, the interior edge of rigidity foreign steamer 1 has " recessed " groove, on " recessed " groove, equidistantly respectively have 202 corresponding holes on the lower wall, cylindrical roller 7 all is housed in the hole, cylindrical roller 7 is formed by rolling body with the Roller Shaft that rolling body is made one, on the Roller Shaft, pack in the rigidity foreign steamer 1 along on " recessed " groove of opening in following two ends, on the lower wall in institute's perforate, thereby cylindrical roller 7 is matched with closed chain 4.
Embodiment two:
Fig. 3 has described second kind of embodiment of the present utility model.Embodiment two and embodiment's one difference is that the shape of cross section of cam 8 is a regular pentagon.
Embodiment three:
Fig. 4, Fig. 5 have described the third embodiment of the present utility model.Embodiment three is identical with embodiment one by tertiary structure, and the different driver concentric locking collar of velocity ratio is fitted together and constitutes, the first order is by cam 9, the rigidity foreign steamer 11 of closed chain 10 and band cylindrical roller 7 is formed, the cross section of cam 9 is oval-shaped, rigidity foreign steamer 11 is simultaneously again as partial cam, therefore the second level is by rigidity foreign steamer 11, the rigidity foreign steamer 13 of closed chain 12 and band cylindrical roller 7 is formed, rigidity foreign steamer 13 is simultaneously again as the cam of the third level, the third level is by rigidity foreign steamer 13, closed chain 14, and the rigidity foreign steamer 15 of band cylindrical roller 7 is formed.At closed chain 10, the bottom of closed chain 12 and closed chain 14 is equipped with clutch 16,17,18 respectively, clutch 16,17,18 adopts existing, when clutch 16 was thrown off with cam 9 with the 19 fixing whiles of frame, power drives cam 9 by driving shaft 20 and rotates, rigidity foreign steamer 11 slows down mechanical motion with the rotation of cam 9 and passes to the second level, fix with cam 9 and work as clutch 16, when throwing off with frame 19 simultaneously, rigidity foreign steamer 11 rotates synchronously with cam 9, and mechanical motion is not slowed down passes to the second level; And when clutch 16 is thrown off simultaneously with cam 9 and frame 19, cam 9 idle running, unpowered output therefore as long as change the state of clutch 16,17,18, just can obtain the power output of 7 kinds of friction speeds on third level rigidity foreign steamer 15.
Claims (2)
1, a kind of harmonic wave chain type speed change driver comprises rigidity foreign steamer and cam, it is characterized in that closed chain is arranged on the cam, and the drive balls that matches with closed chain is arranged on the rigidity foreign steamer.
2, harmonic wave chain type speed change driver according to claim 1, it is characterized in that described drive balls is a cylindrical roller, cylindrical roller equidistantly respectively is distributed on the interior along last of rigidity foreign steamer, and the chain number of the closed chain that the sum of cylindrical roller matches more with it is many more than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214240 CN2114064U (en) | 1992-03-11 | 1992-03-11 | Harmonic chain variable-speed gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214240 CN2114064U (en) | 1992-03-11 | 1992-03-11 | Harmonic chain variable-speed gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2114064U true CN2114064U (en) | 1992-08-26 |
Family
ID=4958824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92214240 Withdrawn CN2114064U (en) | 1992-03-11 | 1992-03-11 | Harmonic chain variable-speed gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2114064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228951A (en) * | 2010-10-07 | 2013-07-31 | 清洁*** | Gear, motor-gear unit, vehicle, generator with gear, and force transmitting element |
-
1992
- 1992-03-11 CN CN 92214240 patent/CN2114064U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228951A (en) * | 2010-10-07 | 2013-07-31 | 清洁*** | Gear, motor-gear unit, vehicle, generator with gear, and force transmitting element |
| CN103228951B (en) * | 2010-10-07 | 2016-03-23 | Tq***公司 | Gear, motor gear unit, vehicle, the cogged generator of tool, and power conveying element |
| CN105650215A (en) * | 2010-10-07 | 2016-06-08 | Tq***公司 | Gear, motor-gear unit, vehicle, generator with a gear, and force transmitting element |
| CN105650215B (en) * | 2010-10-07 | 2018-06-12 | Tq***公司 | Harmonic pin drive, motor gear unit, vehicle and generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |