CN104896026B - Roller speed reducer - Google Patents
Roller speed reducer Download PDFInfo
- Publication number
- CN104896026B CN104896026B CN201510217930.7A CN201510217930A CN104896026B CN 104896026 B CN104896026 B CN 104896026B CN 201510217930 A CN201510217930 A CN 201510217930A CN 104896026 B CN104896026 B CN 104896026B
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- Prior art keywords
- roller
- planetary gear
- fixed seat
- output wheel
- speed reducer
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a kind of Roller speed reducer, including eccentric bushing, planetary gear, output wheel and fixed seat, planetary gear is sheathed on eccentric bushing, output wheel and fixed seat are sheathed on the two ends of planetary gear respectively, planetary gear is in transmission connection with output wheel, is provided with the first roller between planetary gear and fixed seat, and the outside of planetary gear and the inner side of fixed seat are equipped with U-type groove, the U-type groove quantity of fixed seat is equal with the first roller quantity, and the U-type groove quantity of planetary gear is less than the first roller quantity.Roller speed reducer passes through the principle with reference to gear with small teeth difference transmission, realizes the large speed ratio gear of planetary gear and eccentric shaft, makes decelerator have the advantages that small volume, speed ratio be big, speed change high precision, rigid strong.Adjust the gear ratio of Roller speed reducer by the quantity changing the first roller, pass through to change the transmission of the torque magnitude of diameter adjustment Roller speed reducer of the first roller simultaneously.First roller is arranged in fixed seat and the U-type groove of planetary gear, can alleviate the friction of radial forces and the collision of planetary gear and fixed seat.
Description
Technical field
The present invention relates to deceleration device, particularly to a kind of Roller speed reducer.
Background technology
Known, with the development of drive technology, mechanical transmission fields to the required precision of reductor, bearing capacity and make
It is proposed higher and higher requirement with the life-span.Existing transmission shifting mechanism typically passes through gear drive, turbine worm is driven,
Sprocket wheel chain drive etc..Gear drive can be using external tooth engagement or internal tooth engagement.External tooth engagement while total number of teeth in engagement few, one
As only pass through to increase the modulus of gear and increase driving torque, the organization volume that large speed ratio output needs is big.Internal messing is using few
Tooth difference principle, can have multiple tooth engagement simultaneously, but in transmission, inside and outside interference of tooth constrains engaging tooth quantity, is equally difficult to export
Super-huge torque.Sprocket transmission adopts the engagement transmission power of sprocket wheel and chain, although permissible by the way of many row chains, many toothrows
Transmitting large torque, but its gear ratio little it is impossible to realize large speed ratio transmission.And above-mentioned traditional reductor body constitution is big, precision is low,
Rigidity is not strong, and production and processing is relatively difficult.
Content of the invention
It is an object of the invention to provide a kind of simple production process, the rigidly strong, Roller speed reducer of high precision, small volume.
For achieving the above object, according to an aspect of the invention, it is provided a kind of Roller speed reducer, including eccentric bushing,
Planetary gear, output wheel and fixed seat, planetary gear is sheathed on eccentric bushing, and output wheel and fixed seat are sheathed on the two of planetary gear respectively
End, planetary gear is in transmission connection with output wheel, is provided with the first roller, the outside of planetary gear and fixed seat between planetary gear and fixed seat
Inner side be equipped with U-type groove, the U-type groove quantity of fixed seat is equal with the first roller quantity, and the U-type groove quantity of planetary gear is less than the
One roller quantity.Roller speed reducer passes through the principle with reference to gear with small teeth difference transmission, realizes the large speed ratio of planetary gear and eccentric shaft
Gear, makes decelerator have the advantages that small volume, speed ratio be big, speed change high precision, rigidity are strong.By changing the first roller
Quantity adjusts the gear ratio of Roller speed reducer；Pass through to change the torsion of the diameter adjustment Roller speed reducer of the first roller simultaneously
The transmission of size.First roller is arranged in the radial direction that can alleviate planetary gear and fixed seat in fixed seat and the U-type groove of planetary gear
The friction of active force and collision.
In some embodiments, it is provided with the second roller between planetary gear and output wheel, planetary gear is equipped with output wheel
Roller slot corresponding with the second roller.Thus, the connection of planetary gear and output wheel realized by the second roller, makes planetary gear and output wheel
It is synchronized with the movement.Second roller can freely roll, and can buffer the friction between planetary gear and output wheel and collision.
In some embodiments, it is provided with the 3rd roller for supporting rotation between eccentric bushing and planetary gear.Thus, partially
Heart set and planetary gear are inconsistent with the 3rd roller respectively, and the 3rd roller plays the effect supporting rotation, eliminates the use of bearing,
Simplify reducer structure further, make decelerator be easy to assemble.
In some embodiments, the outside of one end of eccentric bushing and the inner side of fixed seat offset, the eccentric bushing other end
Outside is offseted with the inner side of output wheel, and fixed seat and output wheel are socketed.Thus, the position of eccentric bushing, output wheel and fixed seat sets
Put, make reducer structure compact, reduce decelerator volume further.
In some embodiments, it is provided with the first decussation roller group, eccentric bushing and fixed seat between eccentric bushing and fixed seat
Inconsistent with the first decussation roller group respectively.Thus, the first decussation roller group is provided axially and radially with fixed seat for eccentric bushing
Support, make eccentric bushing more steady with the relative motion of fixed seat.
In some embodiments, it is provided with the second decussation roller group, eccentric bushing and output wheel between eccentric bushing and output wheel
Inconsistent with the second decussation roller group respectively.Thus, the second decussation roller group is provided axially and radially with output wheel for eccentric bushing
Support, make eccentric bushing more steady with the relative motion of output wheel.
In some embodiments, it is provided with the 3rd decussation roller group, output wheel and fixed seat between output wheel and fixed seat
Inconsistent with the 3rd decussation roller group respectively.Thus, the 3rd decussation roller group is provided axially and radially with fixed seat for output wheel
Support, make fixed seat more steady with the relative motion of output wheel.
Beneficial effects of the present invention are：Roller speed reducer passes through the principle with reference to gear with small teeth difference transmission, realizes planetary gear
With the large speed ratio gear of eccentric shaft, decelerator is made to have the advantages that small volume, speed ratio be big, speed change high precision, rigidity are strong.Logical
Cross the gear ratio of the quantity adjustment Roller speed reducer changing the first roller.First roller is arranged in the U-shaped of fixed seat and planetary gear
The radial forces of planetary gear and fixed seat in groove, can be alleviated.The eccentric bushing of Roller speed reducer, planetary gear, output wheel and solid
The compact volume reducing decelerator further of reservation assembling.The setting of decussation roller group makes the operation of Roller speed reducer more flat
Surely.The Roller speed reducer of the present invention is by eccentric bushing, planetary gear, output wheel, fixed seat, multigroup roller and multiple decussation roller group shape
Become, each component processing is easy, and then makes Roller speed reducer be readily produced processing.
Brief description
Fig. 1 is the structural representation of the Roller speed reducer of an embodiment of the present invention；
Fig. 2 is Roller speed reducer shown in Fig. 1 along the sectional view of line A-A；
Fig. 3 is Roller speed reducer shown in Fig. 2 along the sectional view of line B-B；
Fig. 4 is Roller speed reducer shown in Fig. 2 along the sectional view of line C-C；
Fig. 5 is the structural representation of Roller speed reducer opposite face shown in Fig. 1；
Fig. 6 is the structural representation of the first decussation roller group of Roller speed reducer shown in Fig. 2.
Specific embodiment
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
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 include eccentric bushing 1 (be Roller speed reducer power defeated
Enter portion), planetary gear 2, output wheel 3 and fixed seat 4.Planetary gear 2 is sheathed on eccentric bushing 1, and output wheel 3 and fixed seat 4 are sheathed respectively
Two ends in planetary gear 2.The outside of one end of eccentric bushing 1 is offseted with the inner side of fixed seat 4, the outside of eccentric bushing 1 other end with
The inner side of output wheel 3 offsets, and fixed seat 4 and output wheel 3 are socketed.Its excircle of center axis deviation of the endoporus of eccentric bushing 1
Central axis, the central axis of the endoporus of eccentric bushing 1 is located at same straight line with the central axis of output wheel 3 and fixed seat 4.
As shown in Figure 2, Figure 3 and Figure 4, it is provided with the first roller 5, the lateral surface of planetary gear 2 between planetary gear 2 and fixed seat 4
All offer U-type groove with the medial surface of fixed seat 4, the U-type groove quantity of fixed seat 4 is equal with the first roller 5 quantity, planetary gear 2
U-type groove quantity be less than the first roller 5 quantity, and the U-type groove quantity of planetary gear 2 differs one with the first roller 5 quantity.
Planetary gear 2 is in transmission connection with output wheel 3.It is provided with multiple second rollers 6, Duo Ge between planetary gear 2 and output wheel 3
Two rollers 6 are uniformly distributed between planetary gear 2 and output wheel 3.Planetary gear 2 and output wheel 3 are equipped with corresponding with the second roller 6
Roller slot.Planetary gear 2 is provided with and the corresponding roller slot of the second roller 6, and this roller slot is bigger than the second roller external diameter；Output wheel 3 sets
Have and the corresponding roller slot of the second roller 6, this roller slot size as the second roller external diameter, form roller slot and the second roller
The conflict of a plurality of line.Therefore, planetary gear 2 and output wheel 3 are driven by the second roller 6, realize being synchronized with the movement.Planetary gear 2 with defeated
Go out and between wheel 3, there is space, the width in space is more than the diameter of the second roller 6, make planetary gear 2 have the space that skew rotates.
It is uniformly distributed the 3rd roller 7 for support both of them rotation between eccentric bushing 1 and planetary gear 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 is offseted with the inner side of fixed seat 4 end.
The central axis of annular boss 11 is located at same straight line with the central axis of fixed seat 4 endoporus.Annular boss 11 and fixed seat 4 it
Between be provided with the first decussation roller group 41.Eccentric bushing 1 and fixed seat 4 offer the connection for accommodating the second decussation roller group 31
Groove.As shown in figure 5, the inside edge of fixed seat 4 is provided with the first briquetting 42, the first briquetting 42 and fixed seat 4 are fixed by screw
Connect.The bottom surface of the first briquetting 42 is offseted with the first decussation roller group 41.
Eccentric bushing 1 deviates from the outside of the end of mounting seat and the tip inside of output wheel 3 offsets.Eccentric bushing 1 with output
Wheel 3 offset part outer circumference central axis, be located at same straight line with the central axis of output wheel 3.Eccentric bushing 1 and output
Wheel 3 is provided with the second decussation roller group 31 in place of offseting.Eccentric bushing 1 and output wheel 3 all offer for accommodating the second decussation roller
The link slot of group 31.As shown in figure 1, the inside edge of output wheel 3 is provided with the second briquetting 32, the second briquetting 32 and output wheel 3 lead to
Cross screw to be fixedly connected.Second briquetting 32 bottom surface and the second decussation roller group 31 offset.
The outside of output wheel 3 is offseted with the medial surface of fixed seat 4, and both places of offseting are provided with the 3rd decussation roller group 33.Defeated
Go out wheel 3 and fixed seat 4 all offers the link slot for accommodating the 3rd decussation roller group 33.As shown in figure 1, output wheel 3 is outer
Lateral edges are provided with the 3rd briquetting 34, the 3rd briquetting 34 is fixedly connected by screw with output wheel 3.The bottom surface of the 3rd briquetting 34 with
3rd decussation roller group 33 offsets.
Fig. 6 is the structural representation of the first decussation roller group 41.First decussation roller group 41 is by multiple rollings arranged in a crossed manner
Post 411 forms.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 Fig. 2 eccentric bushing 1 and fixed seat 4 offset, part is provided with the first sealing ring 43.Eccentric bushing 1 and output wheel 3 phase
It is provided with the second sealing ring 35 to part.Output wheel 3 and fixed seat 4 are provided with the 3rd sealing ring 36 in place of offseting.Three sealing rings make
Eccentric bushing 1, output wheel 3 and fixed seat 4 form sealing space, planetary gear 2, the first roller 5, the second roller 6, the 3rd roller 7
In sealing space.
As shown in Figure 1 and Figure 5, eccentric bushing 1, output wheel 3 and fixed seat 4 all have installing hole.
The work process of the Roller speed reducer of present embodiment is：During eccentric bushing 1 input rotary power, outside eccentric bushing 1
Side drives the 3rd roller 7 in an eccentric manner around the lateral surface swing turn of eccentric bushing 1.The turn of the 3rd roller 7, will carry
Dynamic planetary gear 2 moves rotation, the outer circumference of eccentric bushing 1 eccentric so that planetary gear 2 is also eccentric in the central axis of fixed seat 4,
Thus the outside roller slot of planetary gear 2 is carried out with the identical action of the first roller 5 and disengaging action simultaneously, form planetary gear 2 and move
Dynamic rotation (as Fig. 4).It is to coincide to be connected so that planetary gear 2 is same with output wheel 3 that planetary gear 2 adopts the second roller 6 with output wheel 3
Step rotates.
The rotating speed of output wheel 3 isV1For the rotating speed of eccentric bushing, M is the number of the first roller 5.Outputting torsion is defeated
Enter M times of torsion.
The assembling process of the Roller speed reducer of present embodiment is：
1st, the first decussation roller group 41 is loaded in the link slot between the annular boss 11 of eccentric bushing 1 and fixed seat 4
(note:Add lubricating oil), then by the first briquetting 42 fit on, and adopt and be screwed；
2nd, the 3rd group of rollers 7 is loaded (note on the outside disc of eccentric bushing 1:Add lubricating oil)；
3rd, planetary gear 2 is set with the outside with the 3rd roller 7；
4th, the first roller 5 is loaded (note between the U-type groove of planetary gear 2 and the U-type groove of fixed seat 4:Add lubricating oil)；
5th, the second roller 6 is loaded (note in the roller slot of planetary gear 2:Add lubricating oil)；
6th, output wheel 3 is loaded, then the 3rd decussation roller group 33 loads in output wheel 3 and the link slot of fixed seat 4
(note:Add lubricating oil), and the 3rd briquetting 34 is loaded onto, screw of simultaneously screwing on is solid；
7th, the second decussation roller group 31 is loaded (note in the link slot that output wheel 4 is with eccentric bushing 1:Add lubricating oil), and
Second briquetting 32 is loaded onto, screw of simultaneously screwing on is solid；
8th, the first sealing ring 43, the second sealing ring 35 and the 3rd sealing ring 36 are loaded, i.e. assembling completes.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, some deformation can also be made and improve, these broadly fall into the protection model of the present invention
Enclose.
Claims (8)
1. Roller speed reducer, including eccentric bushing (1), planetary gear (2), output wheel (3) and fixed seat (4), described planetary gear (2) set
Located at eccentric bushing (1), described output wheel (3) and fixed seat (4) are sheathed on the two ends of planetary gear (2), described planetary gear (2) respectively
And output wheel (3) is in transmission connection it is characterised in that being provided with the first roller (5), institute between described planetary gear (2) and fixed seat (4)
The inner side in the outside and fixed seat (4) of stating planetary gear (2) is equipped with U-type groove, the U-type groove quantity and first of described fixed seat (4)
Roller (5) quantity is equal, and the U-type groove quantity of described planetary gear (2) is less than the first roller (5) quantity.
2. Roller speed reducer according to claim 1 is it is characterised in that set between described planetary gear (2) and output wheel (3)
There is the second roller (6), described planetary gear (2) is equipped with roller slot corresponding with the second roller (6) with output wheel (3).
3. Roller speed reducer according to claim 2 is it is characterised in that the slot opening of the roller slot of described planetary gear (2)
More than the external diameter of the second roller (6), the width of rebate of the roller slot of described output wheel (3) is equal to the external diameter of the second roller (6) to degree.
4. Roller speed reducer according to claim 1 and 2 it is characterised in that described eccentric bushing (1) and planetary gear (2) it
Between be provided with for support rotation the 3rd roller (7).
5. Roller speed reducer according to claim 1 it is characterised in that the outside of one end of described eccentric bushing (1) with solid
The inner side of reservation (4) offsets, and the outside of described eccentric bushing (1) other end is offseted with the inner side of output wheel (3), described fixed seat
(4) it is socketed with output wheel (3).
6. Roller speed reducer according to claim 4 is it is characterised in that set between described eccentric bushing (1) and fixed seat (4)
There are the first decussation roller group (41), described eccentric bushing (1) and fixed seat (4) inconsistent with the first decussation roller group (41) respectively.
7. Roller speed reducer according to claim 4 is it is characterised in that set between described eccentric bushing (1) and output wheel (3)
There are the second decussation roller group (31), described eccentric bushing (1) and output wheel (3) inconsistent with the second decussation roller group (31) respectively.
8. Roller speed reducer according to claim 4 is it is characterised in that set between described output wheel (3) and fixed seat (4)
There are the 3rd decussation roller group (33), described output wheel (3) and fixed seat (4) 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 CN104896026A (en) | 2015-09-09 |
| CN104896026B true CN104896026B (en) | 2017-03-01 |
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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 |
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| CN (1) | CN104896026B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (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 |
| JP5438297B2 (en) * | 2008-10-10 | 2014-03-12 | ナブテスコ株式会社 | Eccentric oscillating gear unit |
| DE102010014174B4 (en) * | 2010-04-07 | 2012-04-26 | Sew-Eurodrive Gmbh & Co. Kg | roller drive |
| CN103089955B (en) * | 2011-10-27 | 2015-11-25 | 比亚迪股份有限公司 | A kind of speed change gear |
| 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 |
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- 2015-04-30 CN CN201510217930.7A patent/CN104896026B/en active Active
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| CN104896026A (en) | 2015-09-09 |
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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 |
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