CN108281747A - Cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism - Google Patents
Cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism Download PDFInfo
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- CN108281747A CN108281747A CN201810203705.1A CN201810203705A CN108281747A CN 108281747 A CN108281747 A CN 108281747A CN 201810203705 A CN201810203705 A CN 201810203705A CN 108281747 A CN108281747 A CN 108281747A
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/084—Pivotable antennas
Abstract
One kind cutting hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, includes mainly internal layer annular component truss, outer annular component truss and ectonexine truss connection component；Internal layer annular component truss includes n internal layer folding exhibition unit, and adjacent inner layer folding exhibition unit passes through shared two internal layer floral disc connections up and down；Outer annular component truss includes 2n outer layer folding exhibition unit, and adjacent outward layer folding exhibition unit passes through shared two outer layer floral disc connections up and down；Ectonexine truss connection component includes 2n intermediate folding exhibition unit；Internal layer annular component truss and outer annular component truss are arranged concentric, and up and down two internal layer floral discs of the internal layer folding exhibition unit per side respectively roll over up and down two outer layer floral discs of the exhibition unit per side with corresponding outer layer by an intermediate folding exhibition unit and are connected.The present invention has the characteristics that rigidity is high, simple in structure and reliability is high, can be applied on communications satellite, space station and space probe.
Description
Technical field
The present invention relates to a kind of development agency, especially a kind of deployable antenna mechanism.
Background technology
Currently, the construction of celestial body detecting, space station, the design of aerospace craft, manned space flight and moon exploration plan
All there are inseparable relationship, large space deployable mechanism to exist with space deployable mechanism etc. great Space Science and Technology engineering
One important application of space industry is expansion and supporting mechanism as satellite antenna.Satellite antenna is widely used in pair
The fields such as ground wireless communication, electronic reconnaissance, navigation, remote sensing, scientific research are satellite system " eyes " and " ear ", play
Decisive role.Farther out due to distance, the signal that satellite reception arrives is weaker, to meet multi-functional, multiband, large capacity, Gao Gong
The demand of rate, satellite antenna starts steering enlargement, large direction is developed.The heavy caliber space succeeded in developing at present can
Deployable antenna is broadly divided into expansion ribbed antenna, architecture type expandable antenna, Ring-cylindrical deployable antenna and annular truss formula
Deployable antenna.
Annular truss formula deployable antenna is folded than very big, quality is smaller, the quality not proportional increasing with the increase of bore
Add, is the ideal structure form of tens meters to the up to a hundred meters heavy caliber deployable antennas in space.Domestic and international related scientific research personnel are in ring
It is conducted in-depth research in terms of the deployable mechanism of shape truss-like space, and achieves many achievements in research.With all kinds of boats
Demand of its task to large aperture antenna is continuously increased, and the bore of deployable antenna becomes increasing, single layer annular truss-like
Deployable antenna mechanism cannot meet wanting for truss mechanism rigidity and surface accuracy when bore increases to a certain extent
It asks, and some annular truss deployable antennas realize the raising of antenna mechanism overall stiffness using tensioning zipper, but be tensioned and draw
Lock it is complex, be difficult to control, also reduce integrally-built reliability, expansion during wrapping phenomena easily occurs, because
This, there is an urgent need for developed with heavy caliber, high-precision, high rigidity, high stability, folding on the basis of the configuration of existing annular truss
The folded excellent development agency than the performances such as big, to meet the needs of different space missions.
Invention content
The purpose of the present invention is to provide it is a kind of with heavy caliber, high rigidity and it is big fold than etc. excellent performances cut
Cut with scissors coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism.
The invention mainly comprises internal layer annular component truss, outer annular component truss and ectonexine truss connection components；
The internal layer annular component truss includes n internal layer folding exhibition unit, and each internal layer folding exhibition cellular construction is identical, adjacent inner layer
Folding exhibition unit forms internal layer annular component truss, internal layer annular component truss by the two internal layer floral disc connections up and down shared
It is multi-panel formula hoop truss structure after expansion and gathering；The outer annular component truss includes 2n outer layer folding exhibition unit,
Each outer layer folding exhibition cellular construction is identical, and adjacent outward layer folding exhibition unit passes through the two outer layer floral disc connections up and down shared, group
It is multi-panel formula hoop truss structure after the expansion of outer annular component truss and gathering at outer annular component truss；In described
Outer layer truss connection component includes 2n intermediate folding exhibition unit, and each intermediate folding exhibition cellular construction is identical；It is entire to cut hinge linkage
Formula Planar Mechanisms bilayer annular truss deployable antenna mechanism internal layer annular component truss and outer annular component truss are concentric
Arrangement；Up and down two internal layer floral discs of the internal layer folding exhibition unit per side are rolled over by two intermediate folding exhibition units with corresponding outer layer
Up and down two outer layer floral discs of the exhibition unit per side are connected to form the double-deck annular truss mechanism, that is, it is double-deck to cut hinge coordinated type Planar Mechanisms
Annular truss deployable antenna mechanism.
The internal layer folding exhibition unit includes two internal layer scissors bars, four internal layer cross bars and four internal layer floral discs；It is described
Outer layer folding exhibition unit includes two outer layer scissors bars, four outer layer cross bars and four outer layer floral discs；Wherein internal layer scissors bar with
Outer layer scissors bar meet length relation formula be
N is internal layer folding exhibition element number in formula, and L, l are respectively the half of internal layer scissors bar and outer layer scissors pole length.
Four internal layer disc chuck structures of internal layer folding exhibition unit are identical, generally face symmetrical structure, during the plane of symmetry is referred to as
Face.There are four branch to pitch for each internal layer floral disc, and be respectively provided with one on two of which branch fork opens by the symmetrical of the plane of symmetry of middle face
Mouth slot, i.e., single notch branch fork, other two branch, which is pitched, respectively sets two open slots, i.e. double flute mouth branch is pitched, and two double flute mouth branch fork
Also using middle face as the plane of symmetry, each open slot is all provided with there are two the parallel cylindrical hole of axis, and two double flute mouth branch pitch each notch
The plane of symmetry and the angle in middle face are
Two single notch branch pitch the plane of symmetry of each notch and the angle in middle face is
Two internal layer scissors rod structures are identical, are connected by revolute pair in the middle part of two internal layer scissors bars, form internal layer
Scissors folding rod, four free ends of every group of internal layer scissors folding rod are inserted into remote in the double flute mouth branch fork of each internal layer floral disc respectively
It is connected in open slot from single notch branch fork and by revolute pair, four internal layer floral discs is made to be symmetrically distributed in internal layer folding exhibition unit
Four vertex on；Four internal layer bar structures are identical, and one end of each two internal layer cross bar connects into one by revolute pair
Group, four internal layer cross bars form two groups of internal layer folding cross bars, the other end of four internal layer cross bars up and down and are inserted into above-mentioned four respectively altogether
In another open slot of a internal layer floral disc the same side double flute mouth branch fork, and connected by revolute pair；In same internal layer folding exhibition unit
Internal layer folding cross bar and the revolute pair axis on internal layer scissors folding rod it is parallel；Another of above-mentioned internal layer floral disc is double
Notch branch fork is for connecting adjacent internal layer folding exhibition unit.
Four outer layer disc chuck structures of outer layer folding exhibition unit are identical, and there are three branch to pitch for each outer layer floral disc, wherein
One branch fork is equipped with single notch, and two open slots are respectively set on other two branch fork, i.e. double flute mouth branch is pitched, and each open slot is equal
If there are two the parallel cylindrical hole of axis, one of double flute mouth branch pitches the plane of symmetry and the single port slot plane of symmetry of each notch
Angle is
The angle that another double flute mouth branch pitches the plane of symmetry and the single port slot plane of symmetry of each notch is
Two outer layer scissors rod structures in outer layer folding exhibition unit are identical, by turning in the middle part of two outer layer scissors bars
Dynamic secondary connection, forms outer layer scissors folding rod；Four outer layer flowers are inserted into four free ends of every group of outer layer scissors folding rod respectively
It is connected in open slot far from single notch branch fork in the double flute mouth branch fork of disk and by revolute pair, keeps four outer layer floral discs symmetrical
It is distributed on four vertex of outer layer folding exhibition unit；It is located at two pendulum of outer layer folding exhibition unit the same side in four outer layer floral discs
Put that posture is identical, and symmetrical, four outer layer cross bars of with two outer layer floral discs of other side about outer layer rolling over exhibition unit center face
Structure is identical, and one end of each two outer layer cross bar connects into one group by revolute pair, and four outer layer cross bars form up and down altogether
The other end of two groups of outer layer folding cross bars, four outer layer cross bars is inserted into aforementioned four outer layer floral disc the same side double flute mouth branch respectively
It in another open slot of fork, and is connected by revolute pair, the outer layer folding cross bar in same outer layer folding exhibition unit and outer layer scissors
Revolute pair axis on folding rod is parallel；Another double flute mouth branch fork of above-mentioned outer layer floral disc is adjacent outer for connecting
Layer folding exhibition unit.
The intermediate folding exhibition unit includes the identical intermediate scissors bar of two structures, and two intermediate scissors bars are by turning
The dynamic secondary intermediate scissors folding rod of connection composition, the revolute pair of two intermediate scissors bars of connection are classified as two sections, the ratio between two segment length
For L/l, longer one section is isometric with the half of internal layer scissors pole length, shorter one section with the half of outer layer scissors pole length
It is isometric；The intermediate scissors folding rod is inserted into above-mentioned two internal layers up and down respectively away from centre connection revolute pair apart from longer both ends
It is connected in the open slot of single notch branch fork of floral disc and by revolute pair, is turned away from centre connection on intermediate scissors folding rod respectively
The shorter both ends of dynamic secondary distance are inserted into the open slot of single notch branch fork of above-mentioned two outer layer floral discs up and down and are led to respectively respectively
Revolute pair connection is crossed, five revolute pair axis on intermediate scissors folding rod are parallel.
The internal layer folding exhibition unit rolls over exhibition unit structural form with outer layer and connection type is similar, but scantling is not
Together, two internal layer scissors pole lengths are 2L, and two outer layer scissors pole lengths are 2l；Internal layer folding exhibition unit and outer layer folding exhibition unit
In corresponding rod piece be satisfied by special ratios relationship, the internal layer scissors bar and the outer layer in the internal layer folding exhibition unit roll over exhibition
The length ratio of outer layer scissors bar in unit and the internal layer cross bar in internal layer folding exhibition unit and outer layer folding exhibition unit
In outer layer cross bar length ratio be L/l.
The internal layer floral disc and outer layer floral disc, the revolute pair axis of each branch fork pockets mouth and respective floral disc central axis it
Between distance meet special ratios relationship；Internal layer floral disc list notch branch pitches the distance between revolute pair axis and internal layer floral disc center
It is L/l, internal layer floral disc double flute to pitch the ratio between the distance between revolute pair axis and outer layer floral disc center with outer layer floral disc list notch branch
The distance between revolute pair axis and internal layer floral disc center in mouth branch fork on the notch far from list notch branch fork and outer layer floral disc
The ratio between the distance between revolute pair axis and outer layer floral disc center in double flute mouth branch fork on the notch of separate single notch branch fork
For L/l, revolute pair axis on internal layer floral disc and outer layer floral disc in double flute mouth branch fork in the notch of single notch branch fork with
The revolute pair axis in notch on this floral disc far from single notch branch fork in double flute mouth branch fork overlaps.
Compared with the prior art, the present invention has the following advantages：
1, have the advantages that movement is flexible, it is bigger to fold.
2, simple in structure, contained kinematic pair is revolute pair, it is easy to accomplish engineering manufactures.
3, rigidity is higher, and can fully meet space large caliber deployable antenna uses rigidity requirement.
4, use modular design philosophy, module number can according to the demand of antenna aperture and cell size and
Arbitrarily change, module autgmentability is strong, it can be achieved that modularized production, to effectively reduce manufacturing cost and difficulty.
5, embodiment is simple, and reliability is high, can be applied on communications satellite, space station and space probe.
Description of the drawings
Fig. 1 is that the present invention is fully deployed three-dimensional simplified schematic diagram；
Fig. 2 is that Fig. 1 is fully deployed vertical view；
Fig. 3 is half expansion stereoscopic schematic diagram schematic diagram of the present invention；
Fig. 4 is the three-dimensional simplified schematic diagram of gathering completely of the invention；
Fig. 5 is the internal layer annular component truss solid simplified schematic diagram of the present invention；
Fig. 6 is the outer annular component truss solid simplified schematic diagram of the present invention；
Fig. 7 is that the internal layer folding exhibition unit of the present invention is fully deployed three-dimensional simplified schematic diagram；
Fig. 8 is that the outer layer folding exhibition unit of the present invention is fully deployed three-dimensional simplified schematic diagram；
Fig. 9 is that two outer layers folding exhibition unit of the present invention collapses three-dimensional simplified schematic diagram completely；
Figure 10 is the intermediate folding exhibition unit three-dimensional simplified schematic diagram of the present invention；
Figure 11 is the three-dimensional simplified schematic diagram of the internal layer floral disc of the present invention；
Figure 12 is the three-dimensional simplified schematic diagram of the outer layer floral disc of the present invention.
In figure：1- internal layer annulars component truss, 2- outer annulars component truss, the centres 3- folding exhibition unit, 4- internal layers roll over exhibition
Unit, 5- outer layers folding exhibition unit, 6- internal layers cross bar, 7- internal layer scissors bar, 8- internal layers floral disc, 9- outer layers cross bar, 10- outer layers are cut
Formula bar, 11- outer layers floral disc, the centres 12- scissors bar.
Specific implementation mode
Show in Fig. 1, Fig. 2, Fig. 3 and hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism shown in Fig. 4 of cutting
In intention, internal layer annular component truss 1 includes 12 internal layer folding exhibition units 4, and each internal layer folding exhibition cellular construction is identical, phase
Adjacent internal layer folding exhibition unit is connected by the two internal layer floral discs 8 up and down shared, forms internal layer annular component truss, internal layer annular
Component truss is multi-panel formula hoop truss structure after being unfolded and collapsing；Outer annular component truss 2 includes that 24 outer layers roll over exhibition
Unit 5, each outer layer folding exhibition cellular construction is identical, and adjacent outward layer folding exhibition unit passes through shared two outer layer floral discs up and down
11 connections form outer annular component truss, are multi-panel formula annular truss knot after the expansion of outer annular component truss and gathering
Structure；The ectonexine truss connection component includes 24 intermediate folding exhibition units 3, and each intermediate folding exhibition cellular construction is identical；It is whole
It is a to cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism internal layer annular component truss and outer annular truss
Component is arranged concentric；Up and down two internal layer floral discs of the internal layer folding exhibition unit per side by two intermediate folding exhibition units with it is opposite
Up and down two outer layer floral discs of the outer layer folding exhibition unit answered per side are connected to form the double-deck annular truss mechanism, that is, cut hinge coordinated type
Planar Mechanisms bilayer annular truss deployable antenna mechanism.
As shown in Figure 7 and Figure 8, internal layer folding exhibition unit 4 includes two internal layer scissors bars, 7, four internal layer cross bars 6 and four
A internal layer floral disc 8；Outer layer folding exhibition unit 5 includes two outer layer scissors bars 10, four outer layer cross bars 9 and four outer layer floral discs
11；The length relation formula that wherein internal layer scissors bar meets with outer layer scissors bar is
N is internal layer folding exhibition element number in formula, and L, l are respectively the half of internal layer scissors bar and outer layer scissors pole length, figure
In, the length 2L of internal layer scissors bar is 560.389mm, and the length 2l of outer layer scissors bar is 400mm.
As shown in figure 11, four internal layer disc chuck structures of internal layer folding exhibition unit are identical, generally face symmetrical structure,
The plane of symmetry is referred to as middle face.There are four branch to pitch for each internal layer floral disc, and it is symmetrical to be respectively provided with one on two of which branch fork with middle face
The symmetrical open slot in face, i.e., single notch branch fork, other two branch, which is pitched, respectively sets two open slots, i.e. double flute mouth branch is pitched, and
Two double flute mouth branch are pitched also using middle face as the plane of symmetry, and each open slot is all provided with that there are two the parallel cylindrical hole of axis, two double flute mouth branch
The plane of symmetry and the angle in middle face for pitching each notch be
Two single notch branch pitch the plane of symmetry of each notch and the angle in middle face is
As shown in fig. 7, two internal layer scissors rod structures are identical, and length 560.389mm, two internal layer scissors bars
Middle part is connected by revolute pair, forms internal layer scissors folding rod, four free ends of every group of internal layer scissors folding rod are inserted into often respectively
It is connected in open slot far from single notch branch fork in the double flute mouth branch fork of a internal layer floral disc and by revolute pair, makes four internal layers
Floral disc is symmetrically distributed on four vertex of internal layer folding exhibition unit；Four internal layer bar structures are identical, and each two internal layer is horizontal
One end of bar connects into one group by revolute pair, and four internal layer cross bars form two groups of internal layer folding cross bars up and down, four internal layers altogether
The other end of cross bar is inserted into respectively in another open slot of aforementioned four internal layer floral disc the same side double flute mouth branch fork, and by turning
Dynamic secondary connection；The revolute pair axis on internal layer folding cross bar and internal layer scissors folding rod in same internal layer folding exhibition unit is flat
Row；Another double flute mouth branch fork of above-mentioned internal layer floral disc is for connecting adjacent internal layer folding exhibition unit；
As shown in figure 12, four outer layer disc chuck structures of outer layer folding exhibition unit are identical, and each outer layer floral disc has three
A branch fork, one of branch fork are equipped with single notch, two open slots are respectively set on other two branch fork, i.e. double flute mouth branch is pitched, often
A open slot is all provided with there are two the parallel cylindrical hole of axis, and one of double flute mouth branch pitches the plane of symmetry and single port of each notch
The angle of the slot plane of symmetry is
The angle that another double flute mouth branch pitches the plane of symmetry and the single port slot plane of symmetry of each notch is
As shown in Figure 8 and Figure 9, two outer layer scissors rod structures in outer layer folding exhibition unit are identical, and length is
400mm, two outer layer scissors bars middle parts are connected by revolute pair, form outer layer scissors folding rod；Every group of outer layer scissors folding rod
Four free ends be inserted into the open slot far from single notch branch fork in the double flute mouth branch fork of four outer layer floral discs and pass through respectively
Revolute pair connects, and four outer layer floral discs is made to be symmetrically distributed on four vertex of outer layer folding exhibition unit；Position in four outer layer floral discs
Two placing attitudes that exhibition unit the same side is rolled in outer layer are identical, and are rolled over about outer layer with two outer layer floral discs of other side
Exhibition unit center face is symmetrical, and four outer layer bar structures are identical, and one end of each two outer layer cross bar is connected by revolute pair
At one group, four outer layer cross bars form two groups of outer layer folding cross bars, the other end of four outer layer cross bars up and down and are inserted into respectively altogether
It in another open slot for stating four outer layer floral disc the same side double flute mouth branch forks, and is connected by revolute pair, same outer layer folding exhibition is single
Outer layer folding cross bar in member and the revolute pair axis on outer layer scissors folding rod are parallel, and other the one of above-mentioned outer layer floral disc
A double flute mouth branch fork is for connecting adjacent outer layer folding exhibition unit.
As shown in Figure 10, intermediate folding exhibition unit includes the identical intermediate scissors bar 12 of two structures, length L+l=
480.1945mm, two intermediate scissors bars connect the intermediate scissors folding rod of composition by revolute pair, two intermediate scissors bars of connection
Revolute pair is classified as two sections, and the ratio between two segment length are L/l=1.401, longer one section with the half of internal layer scissors pole length
Isometric, shorter one section is isometric with the half of outer layer scissors pole length；The intermediate scissors folding rod away from centre connection revolute pair away from
Pass through in open slot from single notch branch fork that above-mentioned two internal layer floral discs up and down are inserted at longer both ends respectively and respectively rotation
It is secondary to connect, it is inserted into respectively above and below above-mentioned outside two away from the shorter both ends of centre connection revolute pair distance on intermediate scissors folding rod
It is connected in the open slot of single notch branch fork of layer floral disc and by revolute pair respectively, five rotations on intermediate scissors folding rod
Secondary axis is parallel.
Distance meets special ratios relationship between each revolute pair axis and respective floral disc center of inside and outside layer folding exhibition unit,
Internal layer floral disc list notch branch pitches the distance between revolute pair axis and internal layer floral disc center p and outer layer floral disc list notch branch fork turns
The ratio between dynamic the distance between secondary axis and outer layer floral disc center q is p/q=L/l=1.401, during internal layer floral disc double flute mouth branch is pitched
The distance between revolute pair axis and internal layer floral disc center on notch far from list notch branch fork m and outer layer floral disc double flute mouth
The ratio between the distance between revolute pair axis and outer layer floral disc center in branch fork on the notch of separate single notch branch fork n is m/n=
Turns auxiliary shaft on L/l=1.401, internal layer floral disc and outer layer floral disc in double flute mouth branch fork in the notch of single notch branch fork
Line is overlapped with the revolute pair axis in the notch far from single notch branch fork in double flute mouth branch fork on this floral disc.
Claims (6)
1. one kind cutting hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, it is characterised in that：It includes inner layer ring
Shape component truss, outer annular component truss and ectonexine truss connection component；The internal layer annular component truss includes in n
Layer folding exhibition unit, each internal layer folding exhibition cellular construction is identical, and adjacent inner layer folding exhibition unit passes through shared two internal layers up and down
Floral disc connects, and forms internal layer annular component truss, is multi-panel formula annular truss after the expansion of internal layer annular component truss and gathering
Structure；The outer annular component truss includes 2n outer layer folding exhibition unit, and each outer layer folding exhibition cellular construction is identical, adjacent
Outer layer folding exhibition unit forms outer annular component truss, outer annular truss by the two outer layer floral disc connections up and down shared
Component is multi-panel formula hoop truss structure after being unfolded and collapsing；The ectonexine truss connection component includes 2n intermediate folding exhibition
Unit, each intermediate folding exhibition cellular construction are identical；It is entire to cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna machine
Structure internal layer annular component truss and outer annular component truss are arranged concentric；Up and down two internal layer of the internal layer folding exhibition unit per side
Floral disc is rolled over up and down two outer layer floral discs of the exhibition unit per side with corresponding outer layer by two intermediate folding exhibition units and is connected to form
Hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism is cut by the double-deck annular truss mechanism.
2. according to claim 1 cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, feature exists
In：The internal layer folding exhibition unit includes two internal layer scissors bars, four internal layer cross bars and four internal layer floral discs；In wherein four
Layer disc chuck structure is identical, and generally face symmetrical structure, the plane of symmetry are referred to as middle face.There are four branch to pitch for each internal layer floral disc,
It is respectively provided with one on two of which branch fork using middle face as the symmetrical open slot of the plane of symmetry, i.e., single notch branch fork, other two is propped up
Two open slots are respectively set on fork, i.e. double flute mouth branch is pitched, and two double flute mouth branch fork, also using middle face as the plane of symmetry, each open slot is equal
If there are two the parallel cylindrical hole of axis, two double flute mouth branch pitch the plane of symmetry of each notch and the angle in middle face is
Two single notch branch pitch the plane of symmetry of each notch and the angle in middle face is
Two internal layer scissors rod structures are identical, are connected by revolute pair in the middle part of two internal layer scissors bars, form internal layer scissors
Folding rod, four free ends of every group of internal layer scissors folding rod are inserted into the double flute mouth branch fork of each internal layer floral disc respectively far from single slot
It is connected in the open slot of mouthful branch fork and by revolute pair, four internal layer floral discs is made to be symmetrically distributed in four tops of internal layer folding exhibition unit
Point on；Four internal layer bar structures are identical, and one end of each two internal layer cross bar is connected by revolute pair in one group, four
Layer cross bar forms two groups of internal layer folding cross bars, the other end of four internal layer cross bars up and down and is inserted into aforementioned four internal layer floral disc respectively altogether
In another open slot of the same side double flute mouth branch fork, and connected by revolute pair；Internal layer in same internal layer folding exhibition unit folds
Cross bar and the revolute pair axis on internal layer scissors folding rod are parallel；Another double flute mouth branch fork of above-mentioned internal layer floral disc is used for
Connect adjacent internal layer folding exhibition unit.
3. according to claim 1 cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, feature exists
In：The outer layer folding exhibition unit includes two outer layer scissors bars, four outer layer cross bars and four outer layer floral discs, wherein four outer
Layer disc chuck structure is identical, and there are three branch to pitch for each outer layer floral disc, and one of branch fork is equipped with single notch, other two
Two open slots are respectively set on branch fork, i.e., double flute mouth branch is pitched, and each open slot is all provided with that there are two the parallel cylindrical holes of axis, wherein one
The angle that a double flute mouth branch pitches the plane of symmetry and the single port slot plane of symmetry of each notch is
The angle that another double flute mouth branch pitches the plane of symmetry and the single port slot plane of symmetry of each notch is
Two outer layer scissors rod structures in outer layer folding exhibition unit are identical, connected by revolute pair in the middle part of two outer layer scissors bars
It connects, forms outer layer scissors folding rod；Pair of four outer layer floral discs is inserted into four free ends of every group of outer layer scissors folding rod respectively
It is connected in open slot far from single notch branch fork in notch branch fork and by revolute pair, keeps four outer layer floral discs symmetrical outside
On four vertex of layer folding exhibition unit；It is located at two placing attitude phases of outer layer folding exhibition unit the same side in four outer layer floral discs
Together, and symmetrical about outer layer folding exhibition unit center face with two outer layer floral discs of other side, four outer layer bar structures are complete
Identical, one end of each two outer layer cross bar connects into one group by revolute pair, and four outer layer cross bars form two groups of outer layers up and down altogether
Folding cross bar, the other end of four outer layer cross bars are inserted into another the opening of aforementioned four outer layer floral disc the same side double flute mouth branch fork respectively
It in mouth slot, and is connected by revolute pair, on the outer layer folding cross bar and outer layer scissors folding rod in same outer layer folding exhibition unit
Revolute pair axis is parallel；Another double flute mouth branch fork of above-mentioned outer layer floral disc is for connecting adjacent outer layer folding exhibition unit.
4. according to claim 1 cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, feature exists
In：The intermediate folding exhibition unit includes the identical intermediate scissors bar of two structures, and two intermediate scissors bars are connected by revolute pair
The intermediate scissors folding rod of composition is connect, the revolute pair of two intermediate scissors bars of connection is classified as two sections, and the ratio between two segment length are L/l,
Longer one section isometric with the half of internal layer scissors pole length, and shorter one section isometric with the half of outer layer scissors pole length；It should
Intermediate scissors folding rod is inserted into the list of above-mentioned two internal layer floral discs up and down away from intermediate connection revolute pair respectively apart from longer both ends
Notch branch fork open slot in and connected respectively by revolute pair, on intermediate scissors folding rod away from centre connection revolute pair distance compared with
Short both ends are inserted into the open slot of single notch branch fork of above-mentioned two outer layer floral discs up and down and are connected respectively by revolute pair respectively
It connects, five revolute pair axis on intermediate scissors folding rod are parallel.
5. according to claim 1 cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, feature exists
In：The length relation formula that the internal layer scissors bar meets with outer layer scissors bar is
N is internal layer folding exhibition element number in formula, and L, l are respectively the half of internal layer scissors bar and outer layer scissors pole length.
6. according to claim 1 cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism, feature exists
In：The internal layer floral disc and outer layer floral disc, distance between the revolute pair axis of each branch fork pockets mouth and respective floral disc central axis
Also meet special ratios relationship；Internal layer floral disc list notch branch pitches the distance between revolute pair axis and internal layer floral disc center and outer layer
It is L/l, internal layer floral disc double flute mouth branch fork that floral disc list notch branch, which pitches the ratio between the distance between revolute pair axis and outer layer floral disc center,
In the distance between revolute pair axis on the notch far from single notch branch fork and internal layer floral disc center and outer layer floral disc double flute mouth
The ratio between the distance between revolute pair axis and outer layer floral disc center in branch fork on the notch of separate single notch branch fork are also L/l,
Revolute pair axis on internal layer floral disc and outer layer floral disc in double flute mouth branch fork in the notch of single notch branch fork with this floral disc
The revolute pair axis in notch far from single notch branch fork in upper double flute mouth branch fork overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203705.1A CN108281747A (en) | 2018-03-13 | 2018-03-13 | Cut hinge coordinated type Planar Mechanisms bilayer annular truss deployable antenna mechanism |
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