CN111271421A - Planetary traction transmission bearing type speed reducer - Google Patents
Planetary traction transmission bearing type speed reducer Download PDFInfo
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- CN111271421A CN111271421A CN201911363184.7A CN201911363184A CN111271421A CN 111271421 A CN111271421 A CN 111271421A CN 201911363184 A CN201911363184 A CN 201911363184A CN 111271421 A CN111271421 A CN 111271421A
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- planetary
- transmission
- rolling body
- planet
- limiting
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- 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
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
- F16H13/08—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion with balls or with rollers acting in a similar manner
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- 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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a planetary traction transmission bearing type speed reducer, which comprises a transmission inner shaft, an outer ring, a planetary rolling body and a planetary traction transmission gear train formed by a planetary carrier, wherein the planetary rolling body is matched with the transmission inner shaft and the outer ring in a friction transmission mode; the limiting parts are integrated on the inner transmission shaft and the outer transmission ring, the positioning structure of the speed reducer can be simplified, the axial size can be reduced, the planetary rolling bodies can be prevented from axially inclining and deforming by axially limiting the planetary rolling bodies, vibration is prevented, noise is reduced, the operation efficiency is improved, the shell clamping phenomenon is eliminated, and the operation smoothness is improved.
Description
Technical Field
The invention belongs to the technical field of planetary reducers, and particularly relates to a planetary traction transmission bearing type reducer.
Background
The planetary reducer is a device for realizing speed reduction by using a planetary speed reducing mechanism, and is usually used in a device with limited installation space of the speed reducer, such as a hub motor and the like, because the planetary reducer is small in size and large in transmission ratio, the existing planetary reducer usually adopts a planetary gear speed reducing mechanism, namely, a planetary gear is used as a planetary rolling body, and the planetary gear and an inner ring transmit power through gear meshing at the same time. In addition, the processing and assembling difficulty of the planetary gear is high, and the cost is high.
Therefore, in order to solve the above problems, a planetary traction transmission bearing reducer is needed, which utilizes the friction force among the contact surfaces of the transmission inner shaft, the planetary rolling body and the outer ring to transmit motion and power and realizes the transmission and bearing support functions of a planetary friction wheel, and the planetary traction transmission bearing reducer integrates the functions of speed reduction and bearing, and has the advantages of simple structure, stable operation, reliable bearing, slipping in overload, low processing cost and the like;
patent CN205639286U discloses a planetary traction transmission speed reduction bearing, wherein the rolling bodies are in smooth surface fit with the inner and outer rings, and in order to bear axial force, the structure adopts an end face ball bearing between the input/output rotating part and the end cover, which increases the structural complexity. However, if the bearing is cancelled, the operation efficiency of transmission is greatly reduced when the structure bears axial force due to relative sliding in a mode of local direct contact of end surfaces;
therefore, it is necessary to improve the structure of the reduction bearing, to simplify the structure thereof, to reduce the axial dimension thereof, and to improve the transmission efficiency thereof.
Disclosure of Invention
In view of the above, the present invention provides a planetary traction drive bearing type speed reducer, which can simplify the structure thereof, reduce the axial dimension thereof, and improve the drive efficiency thereof.
The invention discloses a planetary traction transmission bearing type speed reducer which comprises a transmission inner shaft, an outer ring, a planetary rolling body and a planetary carrier, wherein the planetary traction transmission gear train is formed by the transmission inner shaft, the outer ring, the planetary rolling body and the planetary carrier together, the planetary rolling body is matched with the transmission inner shaft and the outer ring in a friction transmission mode, and a limiting part for supporting two circumferential ends of the planetary rolling body to form axial limiting is arranged on the outer circle of the transmission inner shaft and/or the inner circle of the outer.
Furthermore, the excircle of the transmission inner shaft and the excircle of the outer ring are both provided with limiting parts, and the limiting parts are in contact with the excircles at the two axial ends of the planetary rolling body.
Furthermore, in an axial sectional view, the contact surface of the limiting part and the excircle of the end part of the planet rolling body is in a tangential arc and linear contact mode or in a two tangential arc contact mode to form a rolling friction pair.
Further, the rolling body is arranged between the outer ring and the inner ring in an interference fit mode and used for generating positive pressure of friction transmission.
Furthermore, the excircle of the two axial ends of the planetary rolling body is of a concave or convex fillet structure, the limiting part is a limiting ring which is circumferentially protruded on the excircle of the transmission inner shaft and the excircle of the outer ring, and the limiting ring is provided with an annular arc surface or a conical surface which is tangent with the fillet of the planetary rolling body.
Furthermore, the contact point of the limiting part on the inner circle of the outer ring and the planetary rolling body is positioned on the cylindrical surface where the inner circle of the outer ring is positioned, and the contact point of the limiting part on the outer circle of the transmission inner shaft and the planetary rolling body is positioned on the cylindrical surface where the outer circle of the transmission inner shaft is positioned.
Further, when the limiting part and the outer circle of the end part of the planetary rolling body adopt a two-tangent arc contact mode, the diameters of the two arcs are unequal.
Further, the planet carrier is coaxially arranged in a rotating fit with the opposite end of the inner transmission shaft.
Furthermore, the planet carrier comprises a left planet carrier and a right planet carrier which are positioned at the two axial ends of the planet rolling body, and the planet rolling body is rotationally matched with the wheel axle of the planet rolling body and is arranged on the two planet carriers.
Furthermore, the wheel shaft and the planet rolling body are in running fit through a bearing.
The invention has the beneficial effects that:
the bearing type speed reducer has the advantages of simple structure, stable supporting and running, capability of slipping during transmission in overload and the like; the arrangement mode of the structure enables the planet rolling bodies and the transmission inner shaft to be pressed, so that the diameter requirements on the planet rolling bodies and the transmission inner shaft are not high, and compared with a planet traction gear train adopting a gear, the radial arrangement size of the planet traction gear train can be reduced by reducing the diameters of the planet rolling bodies and the transmission inner shaft, the overall size of the speed reducer is reduced, and the structure of the whole driving system is compact;
the limiting parts are integrated on the inner transmission shaft and the outer transmission ring, the positioning structure of the speed reducer can be simplified, the axial size can be reduced, the planetary rolling bodies can be prevented from axially inclining and deforming by axially limiting the planetary rolling bodies, vibration is prevented, noise is reduced, the transmission efficiency is improved, the shell clamping phenomenon is eliminated, and the operation smoothness is improved.
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention in example 1;
FIG. 2 is an enlarged view of point A of FIG. 1;
FIG. 3 is an enlarged view of point A in example 2;
FIG. 4 is an enlarged view of point A in example 3;
Detailed Description
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of point A of FIG. 1; FIG. 3 is an enlarged view of point A in example 2; FIG. 4 is an enlarged view of point A in example 3;
as shown in the figure: the planetary traction transmission bearing type speed reducer comprises a transmission inner shaft, an outer ring, a planetary rolling body and a planetary traction transmission gear train formed by a planetary carrier, wherein the planetary rolling body is matched with the transmission inner shaft and the outer ring in a friction transmission mode, and a limiting part for forming axial limiting is arranged on the outer circle of the transmission inner shaft and/or the inner circle of the outer ring and is used for abutting against two circumferential ends of the planetary rolling body. The positions of the transmission inner shaft 1, the outer ring 2, the planetary rolling body 3 and the planet carrier 6 respectively correspond to a sun wheel, an outer ring, a planet wheel and a planet carrier in a planetary traction gear train; any two of the inner transmission shaft 1, the outer transmission shaft 2 and the planet carrier 6 are used as an input end and an output end of the speed reducer, the input end and the output end of the inner transmission shaft 1 and the outer transmission shaft 2 are respectively in transmission fit with the output shaft and the output shaft, wherein the inner transmission shaft 1 and the outer transmission shaft 2 can be used as the input end and the output end of the speed reducer to achieve the functions of speed reduction and torque increase, similarly, the outer transmission shaft 2 and the planet carrier 6 can also be used as the input end and the output end of the speed reducer, any two of the inner transmission shaft 1, the outer transmission shaft 2 and the planet carrier 6 can be used as the input end and the output end of the speed reducer, the embodiment is not repeated, the scheme that the inner transmission shaft 1 and the planet carrier 6 are used as the input end and the output end of the speed reducer is adopted in the embodiment, when the transmission inner shaft 1 is of a solid shaft structure, the solid shaft can be used as an input shaft, the transmission inner shaft and the input shaft are integrated into a whole by the structure, and the structure of the speed reducing bearing is simplified; the arrangement mode of the structure enables the planet rolling bodies and the transmission inner shaft to be pressed, so that the diameter requirements on the planet rolling bodies and the transmission inner shaft are not high, and compared with a planet traction gear train adopting a gear, the radial arrangement size of the planet traction gear train can be reduced by reducing the diameters of the planet rolling bodies and the transmission inner shaft, the overall size of the speed reducer is reduced, and the structure of the whole driving system is compact; the outer circle of the transmission inner shaft and/or the inner circle of the outer ring are/is provided with limiting parts, the limiting parts can be independently arranged on the outer circle of the transmission inner shaft to axially limit the planetary rolling bodies, the limiting parts can also be independently arranged on the inner circle of the outer ring to axially limit the planetary rolling bodies, or the limiting parts can be simultaneously arranged on the outer circle of the transmission inner shaft and the inner circle of the outer ring, the limiting parts are integrated on the transmission inner shaft and the outer ring, the positioning structure of the speed reducer can be simplified, the axial size is reduced, the planetary rolling bodies can be prevented from axially inclining and deforming by axially limiting the planetary rolling bodies, the vibration is prevented, the noise is reduced, the operation efficiency is improved, the shell clamping.
In this embodiment, the outer circle of the transmission inner shaft and the inner circle of the outer ring are both provided with a limiting part, and the limiting parts are in contact with the outer circles at two axial ends of the planetary rolling body. The limiting parts arranged on the outer circle of the transmission inner shaft and the inner circle of the outer ring can improve the axial stability of the planetary rolling body, and the outer circles at two axial ends of the planetary rolling body are in contact with the limiting parts, so that rolling friction is formed between the planetary rolling body and the limiting parts, the abrasion phenomenon of the end part of the planetary rolling body can be improved, the vibration of the planetary rolling body caused by friction is improved, and the running stability of the speed reducer is improved.
In this embodiment, in an axial cross-sectional view, the contact surface between the limiting part and the outer circle of the end of the planetary rolling element is in a tangential arc and linear contact manner or in a two tangential arc contact manner to form a rolling friction pair. Referring to fig. 2, the outer circles of the two axial ends of the planetary rolling element are convex round corner structures, and the contact surface of the limiting part and the round corner is a plane tangent to the round corner; with reference to fig. 3, the embodiment is an embodiment 2, the embodiment 2 has the same structure as that of the embodiment 1, and only the structure at the point a is different, in this embodiment, the outer circles at the two axial ends of the planetary rolling element also have convex rounded corner structures, and the contact surface between the limiting part and the rounded corner is an arc surface tangent to the rounded corner; referring to fig. 4 and fig. 3, the embodiment is an embodiment 3, the rest of the structure of the embodiment 3 is the same as that of the embodiment 1, only the structure at the point a is different, in the embodiment, the excircle of the two axial ends of the planet rolling body is in a concave round angle structure, the contact surface of the limiting part and the round angle is a cambered surface tangent to the round angle, the planet rolling body and the limiting part form point contact in a macroscopic state, and due to compression, the planetary rolling element is in line contact in a microscopic state, the axial effective limit of the planetary rolling element can be realized through the structure, meanwhile, the friction between the planet rolling body and the limiting part is reduced through the rolling friction pair, the running smoothness of the planet rolling body is improved, meanwhile, an automatic aligning function can be formed through the cambered surface, the planetary rolling bodies are further prevented from axially inclining and deforming, vibration is prevented, noise is reduced, the operation efficiency is improved, the shell clamping phenomenon is eliminated, and the operation smoothness is improved.
In this embodiment, the rolling elements are disposed between the outer ring and the inner ring in an interference fit manner, and are used for generating positive pressure of friction transmission. When the bearing type speed reducer of the embodiment is assembled, the diameter of an envelope outer ring formed by combining the transmission inner shaft 1 and the planetary rolling bodies 3 is slightly larger than the inner diameter of the outer ring, namely, the bearing type speed reducer is assembled with a certain interference, the assembled inner ring and the assembled planetary rolling bodies generate certain compression deformation, the outer ring generates expansion deformation, so that pressing force required by friction traction of the planetary rolling bodies 3 is generated, when wet friction transmission is adopted among the planetary rolling bodies, the outer ring and the transmission inner shaft, the surfaces of the inner ring, the transmission inner shaft and the planetary rolling bodies are hardened, the inner ring, the transmission inner shaft and the planetary rolling bodies can work in a lubricant with a high pressure viscosity index after being mutually compressed, a lubricating oil film with high shearing strength is generated in a contact area under high pressure, and friction.
In this embodiment, the outer circles at the two axial ends of the planetary rolling element are in an inward concave or outward convex fillet structure, the limiting portion is a limiting ring circumferentially protruding from the outer circle of the transmission inner shaft and the inner circle of the outer ring, and the limiting ring has an annular arc surface or a conical surface tangent to the fillet of the planetary rolling element. Referring to fig. 2, the outer circles of the two axial ends of the planetary rolling element are of convex round corner structures, wherein the inner side of the limiting ring is provided with a conical surface tangent to the round corner, referring to fig. 3, the outer circles of the two axial ends of the planetary rolling element are of convex round corner structures, wherein the inner side of the limiting ring is provided with an arc surface tangent to the round corner, referring to fig. 4, the outer circles of the two axial ends of the planetary rolling element are of concave round corner structures, wherein the inner side of the limiting ring is provided with an arc surface tangent to the round corner; the limiting part forms an annular structure, the continuous rolling friction of the planetary rolling body along the limiting part is facilitated, and the stability of the planetary rolling body in the rolling process is improved.
In this embodiment, a contact point between the limiting portion on the outer circle inner circle and the planetary rolling element is located on a cylindrical surface where the outer circle inner circle is located, and a contact point between the limiting portion on the transmission inner shaft outer circle and the planetary rolling element is located on the cylindrical surface where the transmission inner shaft outer circle is located. The inner circle of the outer ring is an area where the planetary rolling body is in rolling fit with the outer ring, namely a cylindrical surface corresponding to a bonding surface of the outer ring B in the figure 1, the outer circle of the transmission inner shaft is an area where the planetary rolling body is in rolling fit with the transmission inner shaft, namely a cylindrical surface where a bonding surface of the transmission inner shaft C in the figure is located, and as shown in figures 2 to 4, an axial extension line of a contact point of a limiting part on the inner circle of the outer ring and the planetary rolling body is located in the cylindrical surface where the inner circle of the outer ring is located, namely the radial distance between the contact point of the limiting part and the planetary rolling body and the axis of the outer ring is equal to the radius of the inner ring of the outer ring, and similarly, an axial extension line of the limiting part on the outer circle of the transmission inner shaft and the contact point of the planetary rolling body is located in the cylindrical surface where the outer circle of the transmission, the speed difference between the two is eliminated, the phenomenon of stress concentration or slipping caused by the speed difference is eliminated, and the rolling stability of the planetary rolling body is improved.
In this embodiment, when the limiting portion and the outer circle of the end portion of the planetary rolling element adopt two tangent arc contact modes, the diameters of the two arcs are different. Referring to fig. 3, for the convex fillet structure, the diameter of the arc surface of the limiting portion is greater than the diameter of the fillet of the planetary rolling element in this embodiment, that is, the two are tangent to one point, and certainly, the diameter of the arc surface of the limiting portion may be smaller than the diameter of the fillet of the planetary rolling element, and at this time, the two are tangent to two points; referring to fig. 4, for the concave rounded corner structure, the diameter of the arc surface of the limiting portion is smaller than the diameter of the rounded corner of the planetary rolling element in this embodiment, that is, the two are tangent to one point, and certainly, the diameter of the arc surface of the limiting portion may be larger than the diameter of the rounded corner of the planetary rolling element, and at this time, the two are tangent to two points; the point contact of the limiting part and the planetary rolling body in a macroscopic state can be realized through two arc tangent structures with different diameters, the abrasion is reduced, the interference phenomenon of the limiting part and the planetary rolling body can be improved, the assembly precision is improved, and the requirements on the processing precision of a fillet structure and the cambered surface of the limiting part are lowered.
In this embodiment, the planet carrier is coaxially arranged in a rotational fit with the opposite end of the inner transmission shaft. The inner end of the transmission inner shaft 1 extends into the supporting hole of the opposite end face of the planet carrier 6, and the transmission inner shaft 1 and the supporting hole can be in transmission fit through a bearing, so that the transmission inner shaft 1 is prevented from forming a cantilever structure, and the stability of the transmission inner shaft is improved.
In this embodiment, the planetary carrier 6 includes a left planetary carrier 6a and a right planetary carrier 6b at both axial ends of the planetary rolling elements 3, which are rotatably fitted to their axles and mounted on the two planetary carriers. Two ends of the planetary rolling element wheel shaft 7 are arranged on the left and right planetary carriers in a rotating fit manner; the left and right planet carriers of the embodiment can be connected into a whole through bolts, the structure is convenient for installing the retainer, the left and right planet carriers support the planet rolling bodies 3, the integral consistency of parts is improved, and the planet rolling bodies are further limited from generating inclined deformation.
In the embodiment, the wheel shaft and the planetary rolling body are in running fit through the bearing 4. A pair of bearings is arranged on the wheel shaft to improve the rotation fluency of the planet and reduce the friction of the planet rolling body.
In this embodiment, oil seals 5 are provided between the left and right planetary carriers 6a and 6b and the inner circle of the outer ring. The inside of the bearing type speed reducer is sealed through an oil seal, and the left end cover 8 and the right end cover 9 are integrated with the oil seal to seal the inside of the bearing type speed reducer, so that a lubricant is prevented from leaking; in this embodiment, the inner transmission shaft 1 serves as an output shaft, and the output shaft 8 is integrally connected to the outside of the right planet carrier 6b, so that the effects of speed reduction and torque increase are achieved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a planet traction drive bearing type reduction gear which characterized in that: the planetary traction transmission gear train comprises a transmission inner shaft, an outer ring, a planetary rolling body and a planet carrier, wherein the planetary traction transmission gear train is formed by the transmission inner shaft, the outer ring, the planetary rolling body and the planet carrier together, the planetary rolling body is matched with the transmission inner shaft and the outer ring in a friction transmission mode, and a limiting part for supporting two circumferential ends of the planetary rolling body to form axial limiting is arranged on the outer circle of the transmission inner shaft and/or the inner.
2. A planetary traction drive bearing-type reducer according to claim 1, wherein: and the outer circle of the transmission inner shaft and the inner circle of the outer ring are both provided with limiting parts, and the limiting parts are in contact with the outer circles at two axial ends of the planetary rolling body.
3. A planetary traction drive bearing-type reducer according to claim 2, wherein: in an axial sectional view, the contact surface of the limiting part and the excircle of the end part of the planet rolling body is in a tangential arc and linear contact mode or in a two tangential arc contact mode to form a rolling friction pair.
4. A planetary traction drive bearing-type reducer according to claim 1, wherein: the rolling body is arranged between the outer ring and the inner ring in an interference fit mode and used for generating positive pressure of friction transmission.
5. A planetary traction drive bearing-type reducer according to claim 3, wherein: the outer circles at two axial ends of the planetary rolling body are of concave or convex fillet structures, the limiting parts are limiting rings which are circumferentially protruded on the outer circle of the transmission inner shaft and the inner circle of the outer ring, and the limiting rings are provided with annular arc surfaces or conical surfaces which are tangent with the fillet of the planetary rolling body.
6. A planetary traction drive bearing-type reducer according to any one of claims 2 to 5, wherein: the contact point of the limiting part on the outer circle inner circle and the planetary rolling body is positioned on the cylindrical surface where the outer circle inner circle is positioned, and the contact point of the limiting part on the transmission inner shaft outer circle and the planetary rolling body is positioned on the cylindrical surface where the transmission inner shaft outer circle is positioned.
7. A planetary traction drive bearing-type reducer according to claim 3, wherein: when the limiting part and the outer circle of the end part of the planet rolling body adopt two tangent arc contact modes, the diameters of the two arcs are unequal.
8. A planetary traction drive bearing-type reducer according to claim 3, wherein: the opposite end of the planet carrier and the inner transmission shaft are coaxially arranged in a rotating fit mode.
9. A planetary traction drive bearing-type reducer according to claim 1, wherein: the planet carrier comprises a left planet carrier and a right planet carrier which are positioned at the two axial ends of the planet rolling body, and the planet rolling body is rotationally matched with the wheel axle and is arranged on the two planet carriers.
10. A planetary traction drive bearing-type reducer according to claim 8, wherein: the wheel shaft is in running fit with the planet rolling body through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911363184.7A CN111271421A (en) | 2019-12-26 | 2019-12-26 | Planetary traction transmission bearing type speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911363184.7A CN111271421A (en) | 2019-12-26 | 2019-12-26 | Planetary traction transmission bearing type speed reducer |
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| Publication Number | Publication Date |
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| CN111271421A true CN111271421A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911363184.7A Pending CN111271421A (en) | 2019-12-26 | 2019-12-26 | Planetary traction transmission bearing type speed reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776395A (en) * | 2021-01-22 | 2022-07-22 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108137A (en) * | 1997-10-03 | 1999-04-20 | Nippon Densan Shinpo Kk | Traction transmitting device |
| CN104061295A (en) * | 2014-05-29 | 2014-09-24 | 温岭市天工工量刃具科技服务中心有限公司 | Friction planetary reducer |
| CN109372963A (en) * | 2018-11-23 | 2019-02-22 | 重庆大学 | More channel-type planet Traction Drive bearing type speed reducers |
| CN109538704A (en) * | 2018-11-23 | 2019-03-29 | 重庆大学 | Planet Traction Drive bearing type integration deceleration wheel hub |
| CN110475988A (en) * | 2017-03-31 | 2019-11-19 | Im系统控股有限公司 | Compound planetary friction drive device |
-
2019
- 2019-12-26 CN CN201911363184.7A patent/CN111271421A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108137A (en) * | 1997-10-03 | 1999-04-20 | Nippon Densan Shinpo Kk | Traction transmitting device |
| CN104061295A (en) * | 2014-05-29 | 2014-09-24 | 温岭市天工工量刃具科技服务中心有限公司 | Friction planetary reducer |
| CN110475988A (en) * | 2017-03-31 | 2019-11-19 | Im系统控股有限公司 | Compound planetary friction drive device |
| CN109372963A (en) * | 2018-11-23 | 2019-02-22 | 重庆大学 | More channel-type planet Traction Drive bearing type speed reducers |
| CN109538704A (en) * | 2018-11-23 | 2019-03-29 | 重庆大学 | Planet Traction Drive bearing type integration deceleration wheel hub |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776395A (en) * | 2021-01-22 | 2022-07-22 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
| CN114776395B (en) * | 2021-01-22 | 2023-10-31 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
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