CN104896026A - Roller speed reducer - Google Patents
Roller speed reducer Download PDFInfo
- Publication number
- CN104896026A CN104896026A CN201510217930.7A CN201510217930A CN104896026A CN 104896026 A CN104896026 A CN 104896026A CN 201510217930 A CN201510217930 A CN 201510217930A CN 104896026 A CN104896026 A CN 104896026A
- Authority
- CN
- China
- Prior art keywords
- roller
- fixed base
- planet wheel
- wheel
- speed reducer
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
Abstract
The invention discloses a roller speed reducer. The roller speed reducer comprises an eccentric sleeve, a planet wheel, an output wheel and a fixed base, wherein the planet wheel coats the eccentric sleeve; the output wheel and the fixed base respectively coat the two ends of the planet wheel; the planet wheel and the output wheel are in transmission connection; first rollers are arranged between the planet wheel and the fixed base; U-shaped grooves are respectively formed in the outer side of the planet wheel and the inner side of the fixed base; the U-shaped grooves of the fixed base are equal to the first rollers in number; and the U-shaped grooves of the planet wheel are fewer than the first rollers. The roller speed reducer realizes the large-speed-ratio speed change transmission of the planet wheel and the eccentric shaft through combining with a principle of small-tooth-difference gear transmission, so that the speed reducer has the advantages of small volume, large speed ratio, high speed change precision and high rigidity. The transmission ratio of the roller speed reducer is adjusted through changing the number of the first rollers; and meanwhile, the transfer of torsion magnitude of the roller speed reducer is adjusted through changing the diameter size of the first rollers. The first rollers are arranged in the U-shaped grooves of the fixed base and the planet wheel, so that the friction and the collision of radial acting force between the planet wheel and the fixed base can be relieved.
Description
Technical field
The present invention relates to speed reducer, particularly a kind of Roller speed reducer.
Background technique
Known, along with the development of drive technology, mechanical transmission fields is to required precision, the bearing capacity of speed reducer and be proposed more and more higher requirement working life.Existing transmission shifting mechanism is generally by gear transmission, turbine worm transmission, sprocket wheel chain transmission etc.Gear transmission can adopt external tooth to engage or internal tooth engagement.External tooth engagement while total number of teeth in engagement few, generally only have by increase gear modulus increase driving torque, large speed ratio export need organization volume large.Internal messing adopts few teeth difference principle, can have multiple tooth engagement simultaneously, but in transmission, inside and outside interference of tooth constrains engaging tooth quantity, is difficult to equally export super-huge torque.Sprocket transmission adopts the engagement transferring power of sprocket wheel and chain, although adopt the mode of many row chains, many toothrows can transmitting large torque, its gear ratio be little, cannot realize large speed ratio transmission.And above-mentioned traditional speed reducer physique is large, precision is low, rigidity is strong not, and production and processing is more difficult.
Summary of the invention
The object of this invention is to provide the Roller speed reducer that a kind of production technology is simple, rigidity is strong, precision is high, volume is little.
For achieving the above object, according to an aspect of the present invention, provide a kind of Roller speed reducer, comprise eccentric bushing, planet wheel, output wheel and fixed base, planet wheel is sheathed on eccentric bushing, output wheel and fixed base are sheathed on the two ends of planet wheel respectively, planet wheel and output wheel are in transmission connection, the first roller is provided with between planet wheel and fixed base, the outside of planet wheel and the inner side of fixed base are equipped with U-type groove, the U-type groove quantity of fixed base is equal with the first roller quantity, and the U-type groove quantity of planet wheel is less than the first roller quantity.Roller speed reducer, by the principle in conjunction with gear with small teeth difference transmission, realizes the large speed ratio gear of planet wheel and eccentric shaft, retarder is had volume is little, speed ratio is large, speed change precision is high, rigidity is strong advantage.By changing the velocity ratio of the quantity adjustment Roller speed reducer of the first roller; Simultaneously by the transmission of the torque magnitude of the diameter adjustment Roller speed reducer of change first roller.First roller is arranged in the U-type groove of fixed base and planet wheel, can alleviate friction and the collision of the radial forces of planet wheel and fixed base.
In some embodiments, be provided with the second roller between planet wheel and output wheel, planet wheel and output wheel are equipped with the roller slot corresponding with the second roller.Thus, the second roller realizes the connection of planet wheel and output wheel, and planet wheel and output wheel are synchronized with the movement.Second roller can Free-rolling, can cushion the friction between planet wheel and output wheel and collision.
In some embodiments, the 3rd roller for supporting rotation is provided with between eccentric bushing and planet wheel.Thus, eccentric bushing and planet wheel are inconsistent with the 3rd roller respectively, and the 3rd roller plays the effect supporting and rotate, and eliminates the use of bearing, simplifies reducer structure further, make retarder be convenient to assembling.
In some embodiments, the outside of one end of eccentric bushing and the inner side of fixed base offset, and the outside of the eccentric bushing the other end and the inner side of output wheel offset, fixed base and output wheel socket.Thus, the position of eccentric bushing, output wheel and fixed base is arranged, and makes reducer structure compact, reduces retarder volume further.
In some embodiments, be provided with the first decussation roller group between eccentric bushing and fixed base, eccentric bushing and fixed base are inconsistent with the first decussation roller group respectively.Thus, the first decussation roller group provides axis and radial support for eccentric bushing and fixed base, makes the relative movement of eccentric bushing and fixed base more steady.
In some embodiments, be provided with the second decussation roller group between eccentric bushing and output wheel, eccentric bushing and output wheel are inconsistent with the second decussation roller group respectively.Thus, the second decussation roller group provides axis and radial support for eccentric bushing and output wheel, makes the relative movement of eccentric bushing and output wheel more steady.
In some embodiments, be provided with the 3rd decussation roller group between output wheel and fixed base, output wheel and fixed base are inconsistent with the 3rd decussation roller group respectively.Thus, the 3rd decussation roller group provides axis and radial support for output wheel and fixed base, makes the relative movement of fixed base and output wheel more steady.
Beneficial effect of the present invention is: Roller speed reducer, by the principle in conjunction with gear with small teeth difference transmission, realizes the large speed ratio gear of planet wheel and eccentric shaft, retarder is had volume is little, speed ratio is large, speed change precision is high, rigidity is strong advantage.By changing the velocity ratio of the quantity adjustment Roller speed reducer of the first roller.First roller is arranged in the U-type groove of fixed base and planet wheel, can alleviate the radial forces of planet wheel and fixed base.The volume of the compact further reduction retarder of the eccentric bushing of Roller speed reducer, planet wheel, output wheel and fixed base assembling.The setting of decussation roller group makes the operation of Roller speed reducer more steady.Roller speed reducer of the present invention is formed by eccentric bushing, planet wheel, output wheel, fixed base, many group rollers and multiple decussation roller group, and each component processing is easy, and then makes Roller speed reducer be easy to production and processing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Roller speed reducer of an embodiment of the present invention;
Fig. 2 is for Roller speed reducer shown in Fig. 1 is along the sectional view of A-A line;
Fig. 3 is for Roller speed reducer shown in Fig. 2 is along the sectional view of B-B line;
Fig. 4 is for Roller speed reducer shown in Fig. 2 is along the sectional view of C-C line;
Fig. 5 is the structural representation of the opposing side of Roller speed reducer shown in Fig. 1;
The structural representation of the first decussation roller group that Fig. 6 is Roller speed reducer shown in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Fig. 1 ~ 6 show schematically show the Roller speed reducer according to one embodiment of the present invention.
As depicted in figs. 1 and 2, the Roller speed reducer of present embodiment comprises eccentric bushing 1 (being the power input part of Roller speed reducer), planet wheel 2, output wheel 3 and fixed base 4.Planet wheel 2 is sheathed on eccentric bushing 1, and output wheel 3 and fixed base 4 are sheathed on the two ends of planet wheel 2 respectively.The outside of one end of eccentric bushing 1 and the inner side of fixed base 4 offset, and the outside of eccentric bushing 1 the other end and the inner side of output wheel 3 offset, and fixed base 4 and output wheel 3 are socketed.The central axis of its excircle of center axis deviation of the endoporus of eccentric bushing 1, the central axis of the endoporus of eccentric bushing 1 and the central axis of output wheel 3 and fixed base 4 are positioned at same straight line.
As shown in Figure 2, Figure 3 and Figure 4, the first roller 5 is provided with between planet wheel 2 and fixed base 4, the outer side surface of planet wheel 2 and the inner side surface of fixed base 4 all offer U-type groove, the U-type groove quantity of fixed base 4 is equal with the first roller 5 quantity, the U-type groove quantity of planet wheel 2 is less than the first roller 5 quantity, and the U-type groove quantity of planet wheel 2 differs one with the first roller 5 quantity.
Planet wheel 2 and output wheel 3 are in transmission connection.Be provided with multiple second roller 6 between planet wheel 2 and output wheel 3, multiple second roller 6 is uniformly distributed between planet wheel 2 and output wheel 3.Planet wheel 2 and output wheel 3 are equipped with the roller slot corresponding with the second roller 6.Planet wheel 2 is provided with the roller slot corresponding with the second roller 6, and this roller slot is larger than the second roller external diameter; Output wheel 3 is provided with the roller slot corresponding with the second roller 6, and this roller slot, with the same size of the second roller external diameter, forms the conflict of roller slot and the second roller many lines.Therefore, planet wheel 2 and output wheel 3, by the second roller 6 transmission, realize being synchronized with the movement.There is space between planet wheel 2 and output wheel 3, the width in space is greater than the diameter of the second roller 6, makes planet wheel 2 have the space of skew rotation.
The 3rd roller 7 rotated for support both of them is uniformly distributed between eccentric bushing 1 and planet wheel 2.3rd roller 7 plays the effect of bearing.
The end of eccentric bushing 1 is provided with annular boss 11, and the outside of annular boss 11 and the inner side of fixed base 4 end offset.The central axis of annular boss 11 and the central axis of fixed base 4 endoporus are positioned at same straight line.The first decussation roller group 41 is provided with between annular boss 11 and fixed base 4.Eccentric bushing 1 and fixed base 4 offer the connecting groove for holding the second decussation roller group 31.As shown in Figure 5, the inside edge of fixed base 4 is provided with the first briquetting 42, first briquetting 42 and is fixedly connected with by screw with fixed base 4.Bottom surface and the first decussation roller group 41 of the first briquetting 42 offset.
The tip inside in outside and output wheel 3 that eccentric bushing 1 deviates from the end of fitting seat offsets.Offseting the central axis of outer circumference of part with output wheel 3 of eccentric bushing 1, is positioned at same straight line with the central axis of output wheel 3.Eccentric bushing 1 and output wheel 3 part that offsets is provided with the second decussation roller group 31.Eccentric bushing 1 and output wheel 3 all offer the connecting groove for holding the second decussation roller group 31.As shown in Figure 1, the inside edge of output wheel 3 is provided with the second briquetting 32, second briquetting 32 and is fixedly connected with by screw with output wheel 3.Second briquetting 32 bottom surface and the second decussation roller group 31 offset.
The outside of output wheel 3 and the inner side surface of fixed base 4 offset, and both places of offseting are provided with the 3rd decussation roller group 33.Output wheel 3 and fixed base 4 all offer the connecting groove for holding the 3rd decussation roller group 33.As shown in Figure 1, the outer ledge of output wheel 3 is provided with the 3rd briquetting 34, the 3rd briquetting 34 is fixedly connected with by screw with output wheel 3.Bottom surface and the 3rd decussation roller group 33 of the 3rd briquetting 34 offset.
Fig. 6 is the structural representation of the first decussation roller group 41.First decussation roller group 41 is made up of multiple roller arranged in a crossed manner.Second decussation roller group 31 is identical with the structure of the first decussation roller group with the structure of the 3rd decussation roller group 33.
As shown in Figure 2, eccentric bushing 1 and fixed base 4 part that offsets is provided with the first seal ring 43.Eccentric bushing 1 and output wheel 3 part that offsets is provided with the second seal ring 35.Output wheel 3 and fixed base 4 part that offsets is provided with the 3rd seal ring 36.Three seal rings make eccentric bushing 1, output wheel 3 and fixed base 4 form seal space, and planet wheel 2, first roller 5, second roller 6, the 3rd roller 7 are positioned at seal space.
As shown in Figure 1 and Figure 5, eccentric bushing 1, output wheel 3 and fixed base 4 all have mounting hole.
The working procedure of the Roller speed reducer of present embodiment is: when eccentric bushing 1 inputs rotating power, and the outer side surface of eccentric bushing 1 drives the 3rd roller 7 to swing turn around the outer side surface of eccentric bushing 1 in an eccentric manner.The turn of the 3rd roller 7, drive planet wheel 2 is moved rotation, the outer circumference of eccentric bushing 1 is eccentric, planet wheel 2 is made also to be eccentric in the central axis of fixed base 4, thus the identical action of the outside roller slot of planet wheel 2 and the first roller 5 and departs from action and carry out simultaneously, formation planet wheel 2 moves rotation (as Fig. 4).Planet wheel 2 and output wheel 3 adopt the second roller 6 to be connected for coincideing, and make planet wheel 2 and output wheel 3 synchronous axial system.
The rotating speed of output wheel 3 is
v
1for the rotating speed of eccentric bushing, M is the number of the first roller 5.Outputting torsion is M times of input torsion.
The assembly process of the Roller speed reducer of present embodiment is:
1, the first decussation roller group 41 is loaded in the connecting groove between the annular boss 11 of eccentric bushing 1 and fixed base 4 (note: add lubricant oil), then by the first briquetting 42 fit on, and adopt and be screwed;
2, the 3rd group of rollers 7 is loaded (note: add lubricant oil) on the outside disc of eccentric bushing 1;
3, planet wheel 2 is set with the outside with the 3rd roller 7;
4, the first roller 5 is loaded (note: add lubricant oil) between the U-type groove of planet wheel 2 and the U-type groove of fixed base 4;
5, the second roller 6 is loaded (note: add lubricant oil) in the roller slot of planet wheel 2;
6, loaded by output wheel 3, then the 3rd decussation roller group 33 loads output wheel 3 and (note: add lubricant oil) in the connecting groove of fixed base 4, and is loaded onto by the 3rd briquetting 34, and screw of simultaneously screwing on is solid;
7, the second decussation roller group 31 is loaded output wheel 4 and (note: add lubricant oil) in the connecting groove of eccentric bushing 1, and loaded onto by the second briquetting 32, screw of simultaneously screwing on is solid;
8, the first seal ring 43, second seal ring 35 and the 3rd seal ring 36 are loaded, namely assembled.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. Roller speed reducer, it is characterized in that, comprise eccentric bushing (1), planet wheel (2), output wheel (3) and fixed base (4), described planet wheel (2) is sheathed on eccentric bushing (1), described output wheel (3) and fixed base (4) are sheathed on the two ends of planet wheel (2) respectively, described planet wheel (2) and output wheel (3) are in transmission connection, the first roller (5) is provided with between described planet wheel (2) and fixed base (4), the outside of described planet wheel (2) and the inner side of fixed base (4) are equipped with U-type groove, the U-type groove quantity of described fixed base (4) is equal with the first roller (5) quantity, the U-type groove quantity of described planet wheel (2) is less than the first roller (5) quantity.
2. Roller speed reducer according to claim 1, it is characterized in that, be provided with the second roller (6) between described planet wheel (2) and output wheel (3), described planet wheel (2) is equipped with the roller slot corresponding with the second roller (6) with output wheel (3).
3. Roller speed reducer according to claim 2, it is characterized in that, the width of rebate of the roller slot of described planet wheel (2) is greater than the external diameter of the second roller (6), and the width of rebate of the roller slot of described output wheel (3) equals the external diameter of the second roller (6).
4. Roller speed reducer according to claim 1 and 2, is characterized in that, is provided with the 3rd roller (7) for supporting rotation between described eccentric bushing (1) and planet wheel (2).
5. Roller speed reducer according to claim 1, it is characterized in that, the outside of one end of described eccentric bushing (1) and the inner side of fixed base (4) offset, the outside of described eccentric bushing (1) the other end and the inner side of output wheel (3) offset, described fixed base (4) and output wheel (3) socket.
6. Roller speed reducer according to claim 4, it is characterized in that, be provided with the first decussation roller group (41) between described eccentric bushing (1) and fixed base (4), described eccentric bushing (1) and fixed base (4) are inconsistent with the first decussation roller group (41) respectively.
7. Roller speed reducer according to claim 4, it is characterized in that, be provided with the second decussation roller group (31) between described eccentric bushing (1) and output wheel (3), described eccentric bushing (1) and output wheel (3) are inconsistent with the second decussation roller group (31) respectively.
8. Roller speed reducer according to claim 4, it is characterized in that, be provided with the 3rd decussation roller group (33) between described output wheel (3) and fixed base (4), described output wheel (3) and fixed base (4) are inconsistent with the 3rd decussation roller group (33) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217930.7A CN104896026B (en) | 2015-04-30 | 2015-04-30 | Roller speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217930.7A CN104896026B (en) | 2015-04-30 | 2015-04-30 | Roller speed reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104896026A true CN104896026A (en) | 2015-09-09 |
| CN104896026B CN104896026B (en) | 2017-03-01 |
Family
ID=54028887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217930.7A Active CN104896026B (en) | 2015-04-30 | 2015-04-30 | Roller speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104896026B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043610A (en) * | 2019-05-07 | 2019-07-23 | 江阴市传动机械研究所 | A kind of high bearing-type speed reducer for driving robot of bearing capacity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010018821A1 (en) * | 2008-08-12 | 2010-02-18 | Ntn株式会社 | Variable valve timing device |
| WO2010041549A1 (en) * | 2008-10-10 | 2010-04-15 | ナブテスコ株式会社 | Eccentric rocking type gear device |
| DE102010014174A1 (en) * | 2010-04-07 | 2011-10-13 | Sew-Eurodrive Gmbh & Co. Kg | roller drive |
| CN103089955A (en) * | 2011-10-27 | 2013-05-08 | 比亚迪股份有限公司 | Speed change device |
| CN103527721A (en) * | 2012-07-05 | 2014-01-22 | 北京精密机电控制设备研究所 | Cycloidal pin wheel speed reducer |
| CN203822962U (en) * | 2014-05-07 | 2014-09-10 | 广西玉林正方机械有限公司 | Cycloid roll ball speed reducer |
-
2015
- 2015-04-30 CN CN201510217930.7A patent/CN104896026B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010018821A1 (en) * | 2008-08-12 | 2010-02-18 | Ntn株式会社 | Variable valve timing device |
| WO2010041549A1 (en) * | 2008-10-10 | 2010-04-15 | ナブテスコ株式会社 | Eccentric rocking type gear device |
| DE102010014174A1 (en) * | 2010-04-07 | 2011-10-13 | Sew-Eurodrive Gmbh & Co. Kg | roller drive |
| CN103089955A (en) * | 2011-10-27 | 2013-05-08 | 比亚迪股份有限公司 | Speed change device |
| CN103527721A (en) * | 2012-07-05 | 2014-01-22 | 北京精密机电控制设备研究所 | Cycloidal pin wheel speed reducer |
| CN203822962U (en) * | 2014-05-07 | 2014-09-10 | 广西玉林正方机械有限公司 | Cycloid roll ball speed reducer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043610A (en) * | 2019-05-07 | 2019-07-23 | 江阴市传动机械研究所 | A kind of high bearing-type speed reducer for driving robot of bearing capacity |
| CN110043610B (en) * | 2019-05-07 | 2023-12-12 | 江阴市传动机械研究所 | Bearing type speed reducer with high bearing capacity and capable of driving robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104896026B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102889341A (en) | Large star wheel gear box | |
| NL2013496B1 (en) | Compound planetary friction drive. | |
| CN101749376A (en) | Pure cycloidal reducer | |
| CN104455226A (en) | Three cycloidal gear type RV speed reducer | |
| CN201269296Y (en) | Harmonic bearing push rod speed reduction unit | |
| CN104896026A (en) | Roller speed reducer | |
| CN101363516B (en) | Circular mobile tooth and small tooth difference variable-speed drive device | |
| CN202402581U (en) | Variable-pitch-radius based star chain transmission stepless speed change device | |
| CN103867671B (en) | Precession steel ball reducer in parallel | |
| CN102312960A (en) | Precision oscillating tooth transmission reducer | |
| CN202418456U (en) | Circular conical surface friction planetary transmission | |
| CN106949165B (en) | Transmission gear clutch structure and transmission | |
| CN201137685Y (en) | Multishock cylinder roller speed changing bearing | |
| CN108431456A (en) | Stepless planetary variable-speed device | |
| CN207539275U (en) | A kind of small size large speed ratio precision speed reduction device | |
| CN202228609U (en) | Precision movable tooth transmission reducer | |
| CN201672005U (en) | High transmission ratio precession reducer | |
| CN201401485Y (en) | Reducer | |
| CN204226565U (en) | Three pieces type cycloid wheel RV retarder | |
| CN202091432U (en) | A speed reducer with small tooth difference | |
| CN201651187U (en) | Gyro-precession type speed reducer | |
| WO2016016645A2 (en) | Gear mechanism | |
| CN211202768U (en) | Double speed ratio speed reducer | |
| CN113339466B (en) | Tower multistage gear shifting decelerator of reconfiguration | |
| CN211288626U (en) | Gear shifting driving mechanism of double-speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171023 Address after: 516000 Guangdong Province, Huizhou city Huiyang District Sha Tian Zhen Tian tou Cun Heng Xiang Hui Ling Industrial Zone factory building two Patentee after: Huizhou Zhida star robot Co Ltd Address before: 537700 the Guangxi Zhuang Autonomous Region Yulin city Hengshan County Lu Chuan Zhen Ren Po Cun Li Mugen No. 103 Patentee before: Li Yongqiang |
|
| TR01 | Transfer of patent right |