CN113942641B - Elastic universal hinge - Google Patents
Elastic universal hinge Download PDFInfo
- Publication number
- CN113942641B CN113942641B CN202111176195.1A CN202111176195A CN113942641B CN 113942641 B CN113942641 B CN 113942641B CN 202111176195 A CN202111176195 A CN 202111176195A CN 113942641 B CN113942641 B CN 113942641B
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- CN
- China
- Prior art keywords
- elastic
- star
- central
- centering
- elastic bearing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/37—Rotors having articulated joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/52—Tilting of rotor bodily relative to fuselage
Abstract
The application belongs to the technical field of helicopter rotor system design, but not limited to, and discloses an elastic universal hinge, which comprises the following components: the device comprises a central piece, two centering elastic bearings, a star-shaped centering elastic bearing and a mounting bolt; the central piece comprises an integrally formed circular ring and three support arms; the three support arms are arranged at equal intervals on the outer side of the circular ring; the star-shaped central elastic bearing is arranged in the central piece circular ring and is not contacted with the side wall of the circular ring; the two centering elastic bearings are respectively fixed on the upper side and the lower side of the central piece through bolts; the two centering elastic bearings are also connected with the star-shaped center elastic bearing through bolts; the middle part of the star-shaped central elastic bearing is provided with a first shaft hole; the middle parts of the two centering elastic bearings are also provided with second shaft holes; the shaft connected with the universal hinge penetrates through the second shaft hole and the first shaft hole. The rotor wing type helicopter can meet the rotor wing movement requirements of the tilting rotor wing type helicopter in three states of a helicopter mode, a fixed wing mode and a transition mode, and can transfer and bear static load and dynamic load of two flight states and a complex transition state.
Description
Technical Field
The application belongs to the technical field of helicopter rotor system design, but not limited to, and discloses an elastic universal hinge.
Background
With the development of helicopter technology, a high-speed rotorcraft capable of taking off and landing vertically becomes a hot spot of research. The tiltrotor aircraft integrates the advantages of a helicopter and a fixed wing aircraft, and is a high-technology product for military and civil use. The rotor of a tiltrotor aircraft is the main lifting surface and control surface of a helicopter and is a key component of the tiltrotor aircraft. Studies have shown that only the universal hinge mechanism can meet the functional and kinetic requirements of tiltrotors. Currently, there are metal universal hinge mechanisms that evolve from automotive cross universal hinge mechanisms, and also complex elastic universal hinge mechanisms of the army tiltrotor V22 configuration, and the like.
Disclosure of Invention
The elastic universal hinge has the advantages of simple structure, high reliability and good maintainability.
An elastic universal hinge comprising: the device comprises a central piece, two centering elastic bearings, a star-shaped centering elastic bearing and a mounting bolt;
the central piece comprises an integrally formed circular ring and three support arms; the three support arms are arranged at equal intervals on the outer side of the circular ring;
the star-shaped central elastic bearing is arranged in the central piece circular ring and is not contacted with the side wall of the circular ring;
the two centering elastic bearings are fixed on the upper side and the lower side of the central piece through bolts respectively;
the two centering elastic bearings are also connected with the star-shaped center elastic bearing through bolts;
the middle part of the star-shaped central elastic bearing is provided with a first shaft hole;
the middle parts of the two centering elastic bearings are also provided with second shaft holes;
the shaft connected with the universal hinge penetrates through the second shaft hole and the first shaft hole.
Further, the star-shaped central elastic bearing is a triangular column, and a first shaft hole is formed in the middle of the triangular column; three first through holes are formed in three vertexes of the triangular column body; three hollow cylinders are respectively fixed in the three first through holes through elastic materials.
Further, the root parts of the three support arms of the central piece are provided with first bolt holes.
Further, the centering elastic bearing includes: the outer shell and the inner shell are connected through elastic materials;
the inner shell is provided with a second shaft hole;
the shell is provided with a second bolt hole matched with the first bolt hole in position and size and a third bolt hole matched with the first through hole in position and size;
the mounting bolts pass through the second bolt holes on the shell and the first bolt holes on the central piece to fix the shell and the central piece;
the mounting bolt passes through a third bolt hole and a first through hole on the shell to connect the shell with the star-shaped central elastic bearing.
Further, the elastic material is formed by overlapping and mixing a metal layer and a rubber layer.
Furthermore, the inner side wall of the central part ring is provided with three arc grooves at equal intervals, so that interference with the side wall of the first through hole at the vertex of the star-shaped central elastic bearing is avoided.
Furthermore, the two centering elastic bearings of the inner shell are also used for axially limiting the star-shaped central elastic bearing, so that the star-shaped central elastic bearing and the central piece are positioned on the same plane.
Further, the outer side wall of the inner shell is a first spherical surface, and the inner side wall of the joint of the outer shell and the elastic material is a second spherical surface; the first spherical surface and the second spherical surface are concentric, and the spherical center is the midpoint of the axis of the star-shaped central elastic bearing.
The beneficial effects are that:
the application realizes complex rotor movement by designing the novel elastic universal hinge, can meet the rotor movement requirements of the tilting rotor aircraft in three states of a helicopter mode, a fixed wing mode and a transition mode, and can transmit and bear static load and dynamic load of two flight states and complex transition states.
Drawings
FIG. 1 is a diagram of an elastic gimbal assembly;
FIG. 2 is a top view of a resilient gimbal hinge;
FIG. 3 is a top view of an elastomeric gimbal-star center elastomeric bearing;
FIG. 4 is a cross-sectional view of an elastic gimbal-star center elastic bearing;
wherein, 1 central part, 2 centering elastic bearing, 3 radial center elastic bearing, 4 rotor shaft, 5 mounting bolts.
Detailed Description
The application is further illustrated by the following embodiments:
the application relates to an elastic universal hinge which consists of a central part 1, a centering elastic bearing 2, a star-shaped center elastic bearing 3, a rotor shaft 4 and a mounting bolt 5.
Wherein, central part 1 includes integrated into one piece's ring and equidistant setting in the three support arms in the ring outside constitute, and screw or paddle can be connected to three support arms, and star-shaped central elastic bearing 2 installs in central part 1 ring, and central part 1 ring inside wall equidistant is equipped with three convex recess, avoids interfering and not contacting with the ring lateral wall with star-shaped central elastic bearing 3 summit lateral wall, and two centering elastic bearings 2 are fixed in central part upper and lower both sides respectively through mounting bolt 5, and two centering elastic bearings 2 are still connected with star-shaped central elastic bearing 2 through the bolt.
The middle part of the star-shaped central elastic bearing 3 is provided with a first shaft hole, the middle parts of the two centering elastic bearings 2 are also provided with a second shaft hole, and the elastic universal hinge connection rotor shaft 4 penetrates through the second shaft hole and the first shaft hole.
The star-shaped central elastic bearing 3 is a triangular cylinder, three vertexes of the triangular cylinder are provided with three first through holes, the inner wall of each first through hole is provided with a first spherical surface, three hollow cylinders are respectively fixed in the three first through holes through elastic materials, the outer side walls of the three hollow cylinders are second spherical surfaces, the elastic materials are elastic materials of a metal and rubber laminated cross mixed structure, the first spherical surfaces and the second spherical surfaces are co-spherical centers, and a plane formed by the three first spherical centers is a central plane of the star-shaped central elastic bearing 3.
The centering elastic bearing 2 includes: the outer shell and the inner shell are connected through elastic materials, wherein the elastic materials are of a metal and rubber laminated cross mixing structure, the outer side wall of the inner shell of the centering elastic bearing 2 is provided with a third spherical surface, the inner side wall of the joint of the outer shell and the elastic materials is provided with a fourth spherical surface, the third spherical surface and the fourth spherical surface are concentric, and the center of the sphere is the intersection point of the center 3 plane of the star-shaped center elastic bearing and the axis of the centering elastic bearing 2. The centering elastic bearing 2 is provided with a second bolt hole matched with the first bolt hole in position and size and a third bolt hole matched with the first through hole in position and size, the mounting bolt penetrates through the second bolt hole in the housing and the first bolt hole in the central piece to fix the housing with the first bolt hole arranged at the root of the three support arms of the central piece 1, and the mounting bolt penetrates through the third bolt hole in the housing and the first through hole to connect the housing with the star-shaped centering elastic bearing 3.
When the rotor is in a working state, the two centering elastic bearings 2 are used as a lifting force transmission mechanism, and meanwhile, the axial movement of elastic materials in the center 3 of the star-shaped centering elastic bearing can be limited; when the propeller or the blade connected with the central part 1 generates waving movement, the plane where the central part 1 is positioned is inclined, and the movement is finally reflected in the deformation coordination of the elastic materials of the two centering elastic bearings 2 and the star-shaped center elastic bearing center 3; the power of the rotor twisting motion is transmitted from the rotor shaft 4 through the spider central elastic bearing 3 to the centering elastic bearing 2, and the centering elastic bearing 2 is transmitted to the center piece 1.
The foregoing is merely a detailed description of the application, which is not a matter of routine skill in the art. However, the scope of the present application is not limited thereto, and any changes or substitutions that can be easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. An elastic universal hinge, which is characterized in that: the universal hinge includes: the device comprises a central piece, two centering elastic bearings, a star-shaped centering elastic bearing and a mounting bolt;
the central piece comprises an integrally formed circular ring and three support arms; the three support arms are arranged at equal intervals on the outer side of the circular ring; the root parts of the three support arms of the central part are provided with first bolt holes;
the star-shaped central elastic bearing is arranged in the central piece circular ring and is not contacted with the side wall of the circular ring;
the two centering elastic bearings are fixed on the upper side and the lower side of the central piece through bolts respectively;
the two centering elastic bearings are also connected with the star-shaped center elastic bearing through bolts;
the middle part of the star-shaped central elastic bearing is provided with a first shaft hole;
the middle parts of the two centering elastic bearings are also provided with second shaft holes;
the shaft connected with the universal hinge penetrates through the second shaft hole and the first shaft hole;
the star-shaped central elastic bearing is a triangular column, and a first shaft hole is formed in the middle of the triangular column; three first through holes are formed in three vertexes of the triangular column body; three hollow cylinders are respectively fixed in the three first through holes through elastic materials;
the centering elastic bearing includes: the outer shell and the inner shell are connected through elastic materials; the inner shell is provided with a second shaft hole; the shell is provided with a second bolt hole matched with the first bolt hole in position and size and a third bolt hole matched with the first through hole in position and size; the mounting bolts pass through the second bolt holes on the shell and the first bolt holes on the central piece to fix the shell and the central piece; the mounting bolt passes through a third bolt hole and a first through hole on the shell to connect the shell with the star-shaped central elastic bearing.
2. An elastic universal hinge according to claim 1, characterized in that: the elastic material is formed by overlapping and mixing a metal layer and a rubber layer.
3. An elastic universal hinge according to claim 2, characterized in that: the inner side wall of the central piece ring is provided with three arc grooves at equal intervals, so that interference with the side wall of the first through hole at the vertex of the star-shaped central elastic bearing is avoided.
4. A flexible gimbal according to claim 3, wherein: the two centering elastic bearings of the inner shell are also used for axially limiting the star-shaped central elastic bearing, so that the star-shaped central elastic bearing and the central piece are positioned on the same plane.
5. An elastic universal hinge according to claim 4, characterized in that: the outer side wall of the inner shell is a first spherical surface, and the inner side wall of the joint of the outer shell and the elastic material is a second spherical surface; the first spherical surface and the second spherical surface are concentric, and the spherical center is the midpoint of the axis of the star-shaped central elastic bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176195.1A CN113942641B (en) | 2021-10-09 | 2021-10-09 | Elastic universal hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176195.1A CN113942641B (en) | 2021-10-09 | 2021-10-09 | Elastic universal hinge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113942641A CN113942641A (en) | 2022-01-18 |
| CN113942641B true CN113942641B (en) | 2023-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111176195.1A Active CN113942641B (en) | 2021-10-09 | 2021-10-09 | Elastic universal hinge |
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| CN (1) | CN113942641B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214016A (en) * | 1996-03-18 | 1999-04-14 | 西科尔斯基飞机公司 | Axisymmetric elastomeric bearing assembly for helicopter rotors |
| CN106342057B (en) * | 2004-10-26 | 2007-06-20 | 南京航空航天大学 | A kind of depopulated helicopter |
| CN101936337A (en) * | 2010-09-10 | 2011-01-05 | 中国航空工业集团公司北京航空材料研究院 | Spherical elastic bearing for helicopter rotor wing and molding method thereof |
| CN101973399A (en) * | 2010-09-30 | 2011-02-16 | 南京航空航天大学 | Constant-speed universal hinged propeller hub for tilt-rotor aircraft |
| CN102458986A (en) * | 2009-05-06 | 2012-05-16 | K4A有限责任公司 | Constant velocity joint for helicopter rotors |
| CN106477040A (en) * | 2016-11-30 | 2017-03-08 | 中国直升机设计研究所 | Rotor driver is manipulated in a kind of axle |
| CN110683049A (en) * | 2019-09-16 | 2020-01-14 | 南京航空航天大学 | Hub device for small-sized tilt rotor aircraft |
| CN112046739A (en) * | 2020-08-06 | 2020-12-08 | 中国人民解放军总参谋部第六十研究所 | Rigid rotor hub of helicopter |
| CN112178052A (en) * | 2020-10-13 | 2021-01-05 | 株洲时代新材料科技股份有限公司 | Laminated rubber and metal elastic bearing |
| CN112268067A (en) * | 2020-10-16 | 2021-01-26 | 中国直升机设计研究所 | Elastic rod end bearing of helicopter rotor damper |
| CN112483539A (en) * | 2020-10-19 | 2021-03-12 | 南京航空航天大学 | Intelligent elastic bearing and control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106342057C (en) * | 2004-10-26 | 2007-06-20 | 南京航空航天大学 | unmanned helicopter |
-
2021
- 2021-10-09 CN CN202111176195.1A patent/CN113942641B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214016A (en) * | 1996-03-18 | 1999-04-14 | 西科尔斯基飞机公司 | Axisymmetric elastomeric bearing assembly for helicopter rotors |
| CN106342057B (en) * | 2004-10-26 | 2007-06-20 | 南京航空航天大学 | A kind of depopulated helicopter |
| CN102458986A (en) * | 2009-05-06 | 2012-05-16 | K4A有限责任公司 | Constant velocity joint for helicopter rotors |
| CN101936337A (en) * | 2010-09-10 | 2011-01-05 | 中国航空工业集团公司北京航空材料研究院 | Spherical elastic bearing for helicopter rotor wing and molding method thereof |
| CN101973399A (en) * | 2010-09-30 | 2011-02-16 | 南京航空航天大学 | Constant-speed universal hinged propeller hub for tilt-rotor aircraft |
| CN106477040A (en) * | 2016-11-30 | 2017-03-08 | 中国直升机设计研究所 | Rotor driver is manipulated in a kind of axle |
| CN110683049A (en) * | 2019-09-16 | 2020-01-14 | 南京航空航天大学 | Hub device for small-sized tilt rotor aircraft |
| CN112046739A (en) * | 2020-08-06 | 2020-12-08 | 中国人民解放军总参谋部第六十研究所 | Rigid rotor hub of helicopter |
| CN112178052A (en) * | 2020-10-13 | 2021-01-05 | 株洲时代新材料科技股份有限公司 | Laminated rubber and metal elastic bearing |
| CN112268067A (en) * | 2020-10-16 | 2021-01-26 | 中国直升机设计研究所 | Elastic rod end bearing of helicopter rotor damper |
| CN112483539A (en) * | 2020-10-19 | 2021-03-12 | 南京航空航天大学 | Intelligent elastic bearing and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113942641A (en) | 2022-01-18 |
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