CN208024786U - A kind of differential gearing retarder - Google Patents
A kind of differential gearing retarder Download PDFInfo
- Publication number
- CN208024786U CN208024786U CN201820148652.3U CN201820148652U CN208024786U CN 208024786 U CN208024786 U CN 208024786U CN 201820148652 U CN201820148652 U CN 201820148652U CN 208024786 U CN208024786 U CN 208024786U
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- Prior art keywords
- gear
- external gear
- external
- internal
- internal gear
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Abstract
The utility model discloses a kind of differential gearing retarders.It is characterized in that, the retarder includes at least one group of input gear group, one group of output gear group and shell.Input gear group includes two intermeshing external gears 2 and external gear 5, drives internal gear 6 to rotate by external gear 5.Output gear group includes at least two intermeshing external gears 7, external gear 8 and internal gear 12.The pivot center of internal gear 6 is identical as the pivot center of external gear 2, and the pivot center of internal gear 12 is identical as external gear 7.External gear 2 is moved with 7 coaxial synchronous of external gear, and internal gear 6 is moved with 12 coaxial synchronous of internal gear.External gear 2 is fixed on external gear 5 on shell, and is rotated by input shaft driving external gear 2.External gear 8 is engaged with internal gear 12 and external gear 7 simultaneously, and is outputed power by revolution by external gear 8.The retarder controls reduction ratio by controlling pitch circle diameter, and theoretical reduction ratio maximum is up to infinitely great.The reducer structure is simple, compact in design, does not have compliant member, good rigidity, and reduction ratio is big.
Description
Technical field
The present invention relates to mechanical engineering fields, more particularly to mechanical reduction transmission field.
Background technology
Retarder is one of common component in machine driving.Currently, main groups of reducers has planetary gear speed-reduction
A few class retarders such as device, RV retarders and harmonic speed reducer.Wherein, planetary reducer stable transmission, driving torque is big, nothing
Deceleration and speedup can be achieved at the same time in compliant member, but retarder volume is larger, and reduction ratio improves difficulty；RV retarders slow down
It is bigger, stable transmission, but transmission parts are more, and system is complex；Harmonic speed reducer transmission ratio is big, simple in structure, but has
On the one hand flexible component is unfavorable for controlling, another aspect lifetime of system is shorter.
Invention content
To solve the problems, such as that gear big retarding ratio, long-life, the present invention provide a kind of retarder without compliant member, this subtracts
Fast device realizes reduction ratio control by controlling pitch circle diameter.
Retarder of the present invention includes at least one group of input gear group, one group of output gear group and shell.Input tooth
Wheel group includes at least two intermeshing external gear I (2) and external gear II (5), by external gear II (5) driving internal gear I (6)
Rotation.Output gear group includes at least two intermeshing external gear III (7), external gear IV (8) and internal gear II (12).
Optionally, the external gear IV (8) can be made of one group of at least one gear；The external gear II (5) can be by 1 group
At least one gear forms.
The pivot center of internal gear I (6) is identical as the pivot center of external gear I (2), the pivot center of internal gear II (12)
It is identical as external gear III (7).External gear I (2) is moved with external gear III (7) coaxial synchronous, internal gear I (6) and internal gear II
(12) coaxial synchronous moves.
The rotation axis of external gear I (2) and external gear II (5) is fixed on shell, and by input shaft driving external gear I (2)
Rotation.It external gear IV (8) while being engaged with internal gear II (12) and external gear III (7), and by output shaft by external gear IV (8)
Revolution output.
If external gear I (2), internal gear I (6), external gear III (7) and internal gear II (12) pitch diameter be respectivelyd 2,d 6,d 7,d 12, then the reduction ratio of the retarder be
η=(d 12-d 7)*d 6/(d 6 d 7-d 12 d 2)
Pitch diameter by controlling external gear I (2), internal gear I (6), external gear III (7) and internal gear II (12) can
Realize different reduction ratio.
Present invention tool has the advantage that：
The retarder does not use compliant member, convenient for accurately controlling for transmission process, and improves the retarder service life.
The reducer structure is compact, small.
The retarder carries out reduction ratio control by controlling pitch diameter, and design space is big, and reduction ratio is big.
Description of the drawings
Fig. 1 is the retarder embodiment sectional view designed according to the present invention.
Fig. 2 is 10 sectional view of output rod.
Specific implementation mode
Fig. 1 is one embodiment of the present invention.With reference to figure 1, retarder of the present invention includes input shaft 1, external gear I
(2), fixing axle 3, bearing 4, external gear II (5), internal gear I (6), external gear III (7), external gear IV (8), bearing 9, output
Bar 10, bearing 11, internal gear II (12), bearing 13, bearing 14, bearing 15 and shell（It is not provided in figure）Composition.
Shell can carry out excipient design according to the structure in embodiment 1, and common engineering designer can complete housing design,
Not as emphasis in the present embodiment, hull shape structure is not discussed.
Input shaft 1 connects external input motor etc., is inputted for power.Input shaft 1 is connected by spline and external gear I (2)
It connects, external gear I (2) is driven to rotate.External gear I (2) is meshed with external gear II (5).External gear II (5) is by bearing 4 and admittedly
Dead axle 3 connects, and fixing axle 3 is fixed on shell.Under the driving of (2) external gear I, external gear II (5) is rotated around fixing axle 3.Together
When, external gear II (5) is meshed with internal gear I (6), and internal gear I (6) is driven to rotate.Internal gear I (6) by bearing 13 with
Shell connects, and pivot center is identical as the pivot center of external gear I (2).
External gear III (7) is equally connect with input shaft 1 by spline, under the drive of input shaft 1, around 1 turn of input shaft
It is dynamic.External gear III (7) is meshed with external gear IV (8), and external gear IV (8) is driven to rotate.External gear IV (8) and internal gear II
(12) it is meshed, in being rotated by jointly for external gear III (7) and internal gear II (12).Internal gear II (12) passes through bearing
14 connect with shell, and can be rotated around input shaft 1.Meanwhile internal gear II (12) and internal gear I (6) is fixedly connected with.
External gear IV (8) is connect by bearing 9 with output rod 10, is exported the revolution of external gear IV (8) by output rod 10.
10 structure of output rod is as shown in Figure 2.Output rod 10 is made of 101 axis, 102 bars, 103 axis and 104 axis.101 axis by bearing 9 with
External gear IV (8) connections, external gear IV (8) can be dynamic around 101 shaft rotations.102 bars are for connecting 103 axis and 104 axis.103 axis with
Integrated molding scheme, which can be used, in 104 axis becomes an entirety, also can separate machined.There is columnar hole inside 104 axis, for placing axis
Hold 11.
103 parts of output shaft 10 are connected by bearing 15 with shell, are outputed power.
1 top of input shaft is put into bearing 11, and is connect with output rod 10 by bearing 11, to ensure the anti-of input shaft 11
Bending ability.
Optionally, external gear III (7) can be connect or be integrally formed by fastener with external gear I (2).
Optionally, internal gear II (12) is connect or is integrally formed by fastener with internal gear I (6).
Optionally, multiple fixed external gear II (5) can be arranged between external gear I (2) and internal gear I (6), to ensure to drive
Dynamic stability.
Optionally, multiple external gear IV (8) can be arranged between external gear III (7) and internal gear II (12), and by similar
Output rod 10 is connected with output shaft.
The pitch diameter of external gear I (2) and external gear III (7) is identical or different, internal gear II (12) and internal gear I (6)
Pitch diameter it is identical or different but identical when the two difference.
When input shaft 1 moves under external input driving, internal gear I is driven by external gear I (2), external gear II (5)
(6) it moves.Internal gear I (6) and internal gear II (12) is fixedly connected with, to drive internal gear II (12) to move synchronously.Meanwhile external tooth
Take turns III (7) keeps movement synchronous with external gear 6.Due to external gear I (2), internal gear I (6), external gear III (7) and internal gear
There are different pitch diameters, to drive external gear IV (8) to carry out revolution and rotation, and by output shaft 10 by external tooth between II (12)
The revolution output for taking turns IV (8), realizes and slows down.
By the speed reducer it is found that external gear I (2), internal gear I (6), external gear III (7) and internal gear II (12)
Size without restriction relation, can be used as mutually independent design variable.If external gear I (2), internal gear I (6), external gear III
(7) and the pitch diameter of internal gear II (12) is respectivelyd 2,d 6,d 7,d 12, then the reduction ratio of the retarder be
η=(d 12-d 7)*d 6/(d 6 d 7-d 12 d 2)
By the reduction ratio calculation formula it is found that reducingd 6 d 7-d 12 d 2, it is possible to increase the reduction ratio of the retarder.External gear I (2)
Different moduluses can be selected from external gear III (7), combined, can be effectively reduced by suitable modulusd 6 d 7-d 12 d 2.When necessary,
Nonstandard gear can also be used.Whend 6 d 7=d 12 d 2When, external gear IV (8) is remained stationary as, and reduction ratio can be approximately infinitely great.Cause
This, which has larger design space, can realize big retarding ratio in a limited space.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to preferred embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that, it can modify to technical scheme of the present invention
Or equivalent replacement should all cover the claim in the present invention without departing from the objective and range of technical solution of the present invention
In range.
Claims (4)
1. a kind of differential gearing retarder, it is characterized in that：The retarder includes at least one group of input gear group, one group of output
Gear set and shell；Input gear group includes at least two intermeshing external gear I and external gear II, is driven by external gear II
Internal gear I rotations；Output gear group includes at least two intermeshing external gear III, external gear IV and internal gear II.
2. retarder as described in claim 1, it is characterised in that：The pivot center of the pivot center and external gear I of internal gear I
Identical, the pivot center of internal gear II is identical as external gear III；External gear I is moved with external gear III coaxial synchronous, internal gear I
It is moved with internal gear II coaxial synchronous.
3. retarder as claimed in claim 2, it is characterised in that：The rotation axis of external gear I and external gear II is fixed on shell
On, and by input shaft driving external gear I rotations；External gear IV is engaged with internal gear II and external gear III simultaneously, and by output shaft
The revolution of external gear IV is exported.
4. retarder as claimed in claim 2, it is characterised in that：If external gear I, internal gear I, external gear III and internal gear
The pitch diameter of II is respectively d2,d6,d7,d12, then the reduction ratio of the retarder be
η=(d12-d7)*d6/(d6d7-d12d2)
Pitch diameter by controlling external gear I, internal gear I, external gear III and internal gear II can realize different reduction ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148652.3U CN208024786U (en) | 2018-01-29 | 2018-01-29 | A kind of differential gearing retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148652.3U CN208024786U (en) | 2018-01-29 | 2018-01-29 | A kind of differential gearing retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208024786U true CN208024786U (en) | 2018-10-30 |
Family
ID=63903445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820148652.3U Expired - Fee Related CN208024786U (en) | 2018-01-29 | 2018-01-29 | A kind of differential gearing retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208024786U (en) |
-
2018
- 2018-01-29 CN CN201820148652.3U patent/CN208024786U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 Termination date: 20200129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |