CN220523189U - Speed reducer - Google Patents
Speed reducer Download PDFInfo
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- CN220523189U CN220523189U CN202321406276.0U CN202321406276U CN220523189U CN 220523189 U CN220523189 U CN 220523189U CN 202321406276 U CN202321406276 U CN 202321406276U CN 220523189 U CN220523189 U CN 220523189U
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- gear
- speed
- fixing seat
- reduction
- bearing
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 40
- 230000009467 reduction Effects 0.000 claims abstract description 128
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of speed reducers, and particularly discloses a speed reducer, which comprises: the eccentric shaft is sequentially provided with a concentric part and an eccentric part along the direction from the input end to the output end of the eccentric shaft, the axial lead of the concentric part is coincident with that of the eccentric shaft, and the axial lead of the eccentric part is parallel to that of the eccentric shaft; the shell is sleeved on the concentric part through a bearing, the shell is provided with a speed reduction cavity, and the eccentric part is positioned in the speed reduction cavity; the first speed reduction assembly is arranged on the eccentric part and is in transmission connection with the shell; the second speed reducing assembly is arranged at one end of the eccentric shaft away from the concentric part and is in transmission connection with the first speed reducing assembly. Compared with the prior RV reducer, the RV reducer has the advantages of reducing assembly parts and reducing manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a speed reducer.
Background
The speed reducer is an independent component consisting of a gear drive, a worm drive and a gear-worm drive enclosed in a rigid housing, and is commonly used as a speed reduction transmission between a driving element and a working machine. The function of matching rotational speed and transmitting torque between a prime motor and a working machine or an actuating mechanism is widely applied to modern machines.
The speed reducer on the market at present can be divided into a gear reducer, a worm reducer and a planetary gear reducer according to the types, wherein the RV speed reducer belongs to the planetary gear reducer, and the speed reducer drives three small eccentric shafts and gears in a planet carrier to carry out speed reduction transmission through a motor input shaft, so that the whole structure is complex, and the manufacturing cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the speed reducer, which has the advantages of simple structure, less assembly parts compared with the prior RV speed reducer, and reduced manufacturing cost.
The technical aim of the utility model is realized by the following technical scheme:
a speed reducer, comprising:
the eccentric shaft is sequentially provided with a concentric part and an eccentric part along the direction from the input end to the output end of the eccentric shaft, the axial lead of the concentric part is coincident with that of the eccentric shaft, and the axial lead of the eccentric part is parallel to that of the eccentric shaft;
the shell is sleeved on the concentric part through a bearing, the shell is provided with a speed reduction cavity, and the eccentric part is positioned in the speed reduction cavity;
the first speed reduction assembly is arranged on the eccentric part and is in transmission connection with the shell;
the second speed reducing assembly is arranged at one end of the eccentric shaft away from the concentric part and is in transmission connection with the first speed reducing assembly.
Compared with the prior art, the RV reducer has the advantages that the purpose of reducing the speed can be achieved only by adopting the cooperation of one eccentric shaft and two groups of speed reducing assemblies, assembly parts are reduced compared with the prior RV reducer which needs three eccentric shafts to drive gears to rotate, the structure is effectively simplified, and the manufacturing cost is reduced.
As a preferable scheme of the utility model, the shell comprises a motor fixing seat, a gear fixing seat and a bearing fixing seat, wherein the bearing fixing seat is sleeved on the eccentric shaft through a first bearing, the motor fixing seat is respectively connected with the gear fixing seat and the bearing fixing seat, the motor fixing seat and the gear fixing seat jointly form a speed reduction cavity, a tooth pattern is arranged on one surface, close to the speed reduction cavity, of the gear fixing seat, and the gear fixing seat is in transmission connection with the first speed reduction assembly through the tooth pattern.
By adopting the scheme, the motor fixing seat and the gear fixing seat jointly form a speed reduction cavity, the gear fixing seat is provided with the insection on one side close to the speed reduction cavity, and the first speed reduction assembly performs circumferential swinging motion under the action of the eccentric part and can be meshed with the gear fixing seat through the insection on the gear fixing seat, so that first-stage speed reduction is realized.
As a preferable scheme of the utility model, a clearance adjusting ring is arranged on the eccentric shaft, and the clearance adjusting ring is connected with the bearing fixing seat.
As a preferable scheme of the utility model, the first speed reducing assembly comprises a first speed reducing gear, a second speed reducing gear and a gear ring, the first speed reducing gear is arranged on the eccentric part through a second bearing, the second speed reducing gear is arranged on the first speed reducing gear and is in transmission connection with the second speed reducing assembly, the outer side wall and the inner side wall of the gear ring are respectively provided with insections, and the gear ring is respectively in meshed connection with the first speed reducing gear and the gear fixing seat.
By adopting the scheme, when the eccentric shaft rotates, the first reduction gear can do circumferential swinging motion under the action of the eccentric part and is meshed with the inner side wall of the gear ring, the insection of the outer side wall of the gear ring is meshed with the insection of the gear fixing seat to realize first-stage reduction, and meanwhile, the second reduction gear is in transmission connection with the second reduction assembly and realizes second-stage reduction through the cooperation of the second reduction gear and the second reduction assembly.
As a preferable scheme of the utility model, the insection of the outer side wall of the gear ring and the insection of the inner side wall of the gear change are concave-convex arc insections.
By adopting the scheme, the gear ring adopts concave-convex circular arc-shaped insections, and has the advantages of small contact stress and high bearing capacity.
As a preferable scheme of the utility model, one side of the first reduction gear, which is close to the second reduction assembly, is provided with a mounting convex ring, and the second reduction gear is sleeved on the mounting convex ring and is in transmission connection with the second reduction assembly.
By adopting the scheme, the second reduction gear is fixedly arranged on the first reduction gear through sleeving, and the second reduction gear can rotate along with the rotation of the first reduction gear, so that power can be transmitted to the second reduction assembly.
As a preferable mode of the present utility model, the insection of the second reduction gear is a circular arc involute insection.
As a preferable scheme of the utility model, the second speed reduction assembly comprises an output gear seat, the output gear seat is arranged on the eccentric shaft through a third bearing, a transmission convex ring is arranged on one surface of the output gear seat, which is close to the first speed reduction assembly, the inner side wall of the transmission convex ring is provided with insections, and the transmission convex ring is in transmission connection with the first speed reduction assembly through insections.
By adopting the scheme, the output gear seat can rotate under the cooperation of the transmission convex ring and the second reduction gear, so that the second-stage reduction is realized.
As a preferable scheme of the utility model, a fourth bearing is arranged between the output gear seat and the shell, and the fourth bearing is sleeved on the transmission convex ring and is connected with the shell.
By adopting the scheme, the output gear seat is arranged on the eccentric shaft through the third bearing, and a fourth bearing is arranged between the output gear seat and the gear fixing seat, so that the output gear seat can be ensured to smoothly rotate through the third bearing and the fourth bearing.
The speed reducer has the following beneficial effects: the eccentric part on the eccentric shaft drives the first reduction gear and the gear ring to do circumferential swinging motion so as to realize first-stage reduction, the second reduction gear is sleeved on the installation convex ring of the first reduction gear, the second reduction gear can rotate along with the first reduction gear, the second reduction gear is meshed with the inner side wall of the transmission convex ring on the output gear seat, and the output gear seat can rotate under the cooperation of the second reduction gear and the transmission convex ring so as to realize second-stage reduction; compared with the prior RV reducer, the RV reducer has the advantages of simple integral structure and effective reduction of manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of an explosion structure of a speed reducer according to the present utility model;
FIG. 2 is a schematic view of a horizontal cross-sectional structure of a speed reducer according to the present utility model;
in the figure: 1. an eccentric shaft; 11. an input end; 12. an output end; 13. a concentric part; 14. a eccentric portion; 2. a housing; 21. a deceleration cavity; 22. a motor fixing seat; 23. a gear fixing seat; 24. a bearing fixing seat; 25. a gap adjusting ring; 3. a first deceleration assembly; 31. a first reduction gear; 32. a second reduction gear; 33. a gear ring; 34. installing a convex ring; 4. a second deceleration assembly; 41. an output gear seat; 42. a transmission convex ring; 5. a first bearing; 6. a second bearing; 7. a third bearing; 8. and a fourth bearing.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a speed reducer.
Referring to fig. 1, in an embodiment of the present utility model, the speed reducer includes: the eccentric shaft 1, the shell 2, the first speed reduction assembly 3 and the second speed reduction assembly 4 are sequentially provided with a concentric part 13 and an eccentric part 14 along the direction from the input end 11 to the output end 12 of the eccentric shaft 1, the axial line of the concentric part 13 coincides with the axial line of the eccentric shaft 1, and the axial line of the eccentric part 14 is parallel to the axial line of the eccentric shaft 1, wherein the eccentric shaft 1, the concentric part 13 and the eccentric part 14 are integrally formed; the shell 2 is sleeved on the concentric part 13 through a bearing, the shell 2 is provided with a deceleration cavity 21, and the eccentric part 14 is positioned in the deceleration cavity 21; the first speed reducing assembly 3 is arranged on the eccentric part 14 and is in transmission connection with the shell 2; the second reduction assembly 4 is arranged at the end of the eccentric shaft 1 remote from the concentric part 13 and is in driving connection with the first reduction assembly 3. The purpose of speed reduction can be achieved by only adopting the cooperation of one eccentric shaft 1 and two groups of speed reduction assemblies, compared with the existing RV speed reducer, the three eccentric shafts 1 are required to drive gears to rotate, assembly parts are reduced, the structure is effectively simplified, and the manufacturing cost is reduced.
Referring to fig. 1 and 2, in an embodiment, the housing 2 includes a motor fixing seat 22, a gear fixing seat 23 and a bearing fixing seat 24, the bearing fixing seat 24 is sleeved on the eccentric shaft 1 through a first bearing 5, the motor fixing seat 22 is respectively connected with the gear fixing seat 23 and the bearing fixing seat 24 through screws, the motor fixing seat 22 and the gear fixing seat 23 jointly form a speed reduction cavity 21, a tooth trace is formed on one surface, close to the speed reduction cavity 21, of the gear fixing seat 23, and the gear fixing seat 23 is in meshed connection with the first speed reduction assembly 3 through the tooth trace. The motor fixing seat 22 and the gear fixing seat 23 jointly form a speed reduction cavity 21, and the side, close to the speed reduction cavity 21, of the gear fixing seat 23 is provided with insections, and the first speed reduction assembly 3 performs circumferential swinging motion under the action of the eccentric part 14 and can be meshed with the gear fixing seat 23 through insections on the gear fixing seat 23, so that first-stage speed reduction is realized.
Referring to fig. 2, in one embodiment, the eccentric shaft 1 is sleeved with a gap adjusting ring 25, and the gap adjusting ring 25 is connected with the bearing fixing seat 24 through a screw.
Referring to fig. 1 and 2, in an embodiment, the first reduction gear 3 includes a first reduction gear 31, a second reduction gear 32 and a gear ring 33, the first reduction gear 31 is mounted on the eccentric portion 14 through the second bearing 6, the second reduction gear 32 is disposed on the first reduction gear 31 and is in transmission connection with the second reduction gear 4, in this embodiment, a mounting convex ring 34 is welded on a side of the first reduction gear 31 close to the second reduction gear 4, the second reduction gear 32 is mounted on the mounting convex ring 34 through interference fit and is in meshing connection with the second reduction gear 4, the outer side wall and the inner side wall of the gear ring 33 are respectively provided with insections, the gear ring 33 is respectively in meshing connection with the first reduction gear 31 and the gear fixing seat 23, insections of the outer side wall of the gear ring 33 and insections of the gear change inner side wall are arc-shaped insections, and insections of the second reduction gear 32 are arc-shaped involute insections. When the eccentric shaft 1 rotates, the first reduction gear 31 can do circumferential swinging motion under the action of the eccentric part 14 and is meshed with the inner side wall of the gear ring 33, the insection of the outer side wall of the gear ring 33 is meshed with the insection of the gear fixing seat 23 to realize first-stage reduction, meanwhile, the second reduction gear 32 is in transmission connection with the second reduction assembly 4, the second-stage reduction is realized through the cooperation of the second reduction gear 32 and the second reduction assembly 4, the gear ring 33 adopts concave-convex insection, the advantages of small contact stress and high bearing capacity are achieved, the second reduction gear 32 is fixedly arranged on the first reduction gear 31 through sleeving, and the second reduction gear 32 can rotate along with the rotation of the first reduction gear 31, so that power can be transmitted to the second reduction assembly 4.
Referring to fig. 1 and 2, in an embodiment, the second reduction assembly 4 includes an output gear seat 41, the output gear seat 41 is mounted on the eccentric shaft 1 through a third bearing 7, a transmission convex ring 42 is welded on one surface of the output gear seat 41, which is close to the first reduction assembly 3, an inner sidewall of the transmission convex ring 42 is provided with a tooth trace, the transmission convex ring 42 is engaged with the second reduction gear 32 through the tooth trace, a fourth bearing 8 is disposed between the output gear seat 41 and the housing 2, and the fourth bearing 8 is sleeved on the transmission convex ring 42 and is connected with the housing 2. The output gear seat 41 can rotate under the cooperation of the transmission convex ring 42 and the second reduction gear 32, so that the second-stage reduction is realized; the output gear seat 41 is mounted on the eccentric shaft 1 through the third bearing 7, and a fourth bearing 8 is further mounted between the output gear seat 41 and the gear fixing seat 23, so that the third bearing 7 and the fourth bearing 8 can ensure smooth rotation of the output gear seat 41.
The eccentric part 14 on the eccentric shaft 1 drives the first reduction gear 31 and the gear ring 33 to do circumferential swinging motion so as to realize first-stage reduction, the second reduction gear 32 is sleeved on the installation convex ring 34 of the first reduction gear 31, the second reduction gear 32 can rotate along with the first reduction gear 31, the second reduction gear 32 is meshed with the inner side wall of the transmission convex ring 42 on the output gear seat 41, and the output gear seat 41 can rotate under the cooperation of the second reduction gear 32 and the transmission convex ring 42 so as to realize second-stage reduction; compared with the prior RV reducer, the RV reducer has the advantages of simple integral structure and effective reduction of manufacturing cost.
The working principle of the application is as follows: when the eccentric shaft 1 rotates, the first reduction gear 31 arranged on the eccentric portion 14 can do circumferential swinging motion, the first reduction gear 31 is meshed with the inner side wall of the gear ring 33, the outer side of the gear ring 33 is meshed with the insection on the fixing seat of the gear ring 33, so that the gear ring 33 also does circumferential swinging motion along with the first reduction gear 31 under the action of the first reduction gear 31, at the moment, the first-stage reduction is completed, and because the second reduction gear 32 is installed on the installation convex ring 34 of the first reduction gear 31 in an interference fit manner, the second reduction gear 32 rotates along with the rotation of the first reduction gear 31, the second reduction gear 32 is meshed and connected with the inner side wall of the transmission convex ring 42 positioned on the output gear seat 41, and the output gear seat 41 rotates under the action of the second reduction gear 32, so that the second-stage reduction is completed.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (9)
1. A speed reducer, characterized by comprising:
the eccentric shaft is sequentially provided with a concentric part and an eccentric part along the direction from the input end to the output end of the eccentric shaft, the axial lead of the concentric part is coincident with that of the eccentric shaft, and the axial lead of the eccentric part is parallel to that of the eccentric shaft;
the shell is sleeved on the concentric part through a bearing, the shell is provided with a speed reduction cavity, and the eccentric part is positioned in the speed reduction cavity;
the first speed reduction assembly is arranged on the eccentric part and is in transmission connection with the shell;
the second speed reducing assembly is arranged at one end of the eccentric shaft away from the concentric part and is in transmission connection with the first speed reducing assembly.
2. The speed reducer of claim 1, wherein: the shell comprises a motor fixing seat, a gear fixing seat and a bearing fixing seat, wherein the bearing fixing seat is sleeved on the eccentric shaft through a first bearing, the motor fixing seat is respectively connected with the gear fixing seat and the bearing fixing seat, the motor fixing seat and the gear fixing seat jointly form a speed reduction cavity, a tooth line is arranged on one surface, close to the speed reduction cavity, of the gear fixing seat, and the gear fixing seat is in transmission connection with the first speed reduction assembly through the tooth line.
3. A speed reducer according to claim 2, characterized in that: and a gap adjusting ring is arranged on the eccentric shaft and is connected with the bearing fixing seat.
4. A speed reducer according to claim 2, characterized in that: the first speed reducing assembly comprises a first speed reducing gear, a second speed reducing gear and a gear ring, the first speed reducing gear is arranged on the eccentric part through a second bearing, the second speed reducing gear is arranged on the first speed reducing gear and is in transmission connection with the second speed reducing assembly, the outer side wall and the inner side wall of the gear ring are respectively provided with insections, and the gear ring is respectively meshed and connected with the first speed reducing gear and the gear fixing seat.
5. The speed reducer of claim 4, wherein: the insection of gear ring lateral wall and the insection of gear trade inside wall are unsmooth convex insection.
6. The speed reducer of claim 4, wherein: one side of the first reduction gear, which is close to the second reduction assembly, is provided with a mounting convex ring, and the second reduction gear is sleeved on the mounting convex ring and is in transmission connection with the second reduction assembly.
7. The speed reducer of claim 4, wherein: the insection of the second reduction gear is arc involute insection.
8. The speed reducer of claim 1, wherein: the second speed reduction assembly comprises an output gear seat, the output gear seat is arranged on the eccentric shaft through a third bearing, a transmission convex ring is arranged on one surface, close to the first speed reduction assembly, of the output gear seat, tooth patterns are arranged on the inner side wall of the transmission convex ring, and the transmission convex ring is in transmission connection with the first speed reduction assembly through the tooth patterns.
9. The speed reducer of claim 8, wherein: a fourth bearing is arranged between the output gear seat and the shell, and the fourth bearing is sleeved on the transmission convex ring and is connected with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406276.0U CN220523189U (en) | 2023-06-02 | 2023-06-02 | Speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406276.0U CN220523189U (en) | 2023-06-02 | 2023-06-02 | Speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220523189U true CN220523189U (en) | 2024-02-23 |
Family
ID=89923341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321406276.0U Active CN220523189U (en) | 2023-06-02 | 2023-06-02 | Speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220523189U (en) |
-
2023
- 2023-06-02 CN CN202321406276.0U patent/CN220523189U/en active Active
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