CN108183309A - Mix scissor-type bilayer annular truss deployable antenna mechanism - Google Patents
Mix scissor-type bilayer annular truss deployable antenna mechanism Download PDFInfo
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- CN108183309A CN108183309A CN201810203617.1A CN201810203617A CN108183309A CN 108183309 A CN108183309 A CN 108183309A CN 201810203617 A CN201810203617 A CN 201810203617A CN 108183309 A CN108183309 A CN 108183309A
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- 241001214246 Fistularia petimba Species 0.000 claims description 54
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- 239000000203 mixture Substances 0.000 claims description 10
- 230000001413 cellular effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
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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
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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
A kind of mixing scissor-type bilayer annular truss deployable antenna mechanism mainly includes internal layer annular component truss, outer annular component truss, center fixation scissors connection component and center movement scissors connection component；Internal layer annular component truss includes n internal layer folding and opens up unit, and outer annular component truss includes 2n outer layer folding exhibition unit, and center fixes scissors connection component and rolls over including n center fixation scissors folding exhibition unit and n/2 center movement scissors and open up unit；Four internal layer floral discs up and down of internal layer folding exhibition unit both sides by two centers fix scissors folding exhibition units and a center moves scissors folding exhibition unit and six outer layer floral discs up and down of exhibition unit are rolled over corresponding two outer layers and is connected to form double-deck annular truss mechanism.Embodiment of the present invention is simple, and reliability is high, has the advantages that movement is flexible, it is bigger to fold, can be applied on communications satellite, space station and space probe.
Description
Technical field
The present invention relates to a kind of deployable antenna mechanisms.
Background technology
As the mankind deepen continuously to the exploration of space, artificial satellite occupies indispensable position in space industry,
And satellite antenna is the important component of satellite, technical performance has important influence to the performance and stability of satellite.With
Space science technology develops rapidly, and satellite antenna technology is one of technology with fastest developing speed in Satellite Payloads in recent years.Its
Medium-and-large-sized annular truss antenna with its structure type is simple, reliability is high, exhibition receive than it is big the features such as, be considered as current large-scale star
Carry the optimal structure type of deployable antenna, become the field of space technology that various countries competitively develop important core technology it
One, excellent structure design is an important aspect in Antenna Design.As the typical forms of spaceborne large-scale antenna, greatly
Type annular truss antenna is in urgent need in larger communication satellite of new generation, repeater satellite, earth observation satellite, and the mouth of demand
Diameter is increasing.The heavy caliber space deployable antenna succeeded in developing at present is broadly divided into expansion ribbed antenna, framework type can be opened up
Kaitian's line, Ring-cylindrical deployable antenna and annular truss formula deployable antenna.
Annular truss formula deployable antenna fold than very greatly, quality is smaller, the quality not proportional increasing with the increase of bore
Add, be the ideal structure form of tens meters to the up to a hundred meters heavy caliber deployable antennas in space.Domestic and international related personnel is in annular purlin
It is conducted in-depth research, and achieve many achievements in research in terms of the deployable mechanism of posture space.As all kinds of space flight are appointed
The demand to large aperture antenna of being engaged in is continuously increased, and the bore of deployable antenna is increasing, the deployable day of individual layer annular truss-like
Line mechanism cannot meet the requirement of truss mechanism rigidity and surface accuracy when bore increases to a certain extent, and some
Annular truss deployable antenna realizes the raising of antenna mechanism overall stiffness using tensioning zipper, but it is more multiple to be tensioned zipper
It is miscellaneous, be difficult to control, also reduce integrally-built reliability, expansion during wrapping phenomena easily occurs, therefore, there is an urgent need for
It is developed on the basis of the configuration of existing annular truss with heavy caliber, high-precision, high rigidity, high stability, folded than the property such as big
The excellent development agency of energy, to meet the needs of different space missions.
Invention content
Not high it is an object of the invention to solve existing annular truss mechanism rigidity, mechanism folds smaller and reliable
Property it is relatively low the problem of, and then provide a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism.
The present invention include internal layer annular component truss, outer annular component truss, center fix scissors connection component and
Scissors connection component is moved at center, and the internal layer annular component truss includes n internal layer folding exhibition unit, each internal layer folding exhibition unit knot
Structure is identical, and adjacent internal layer folding exhibition unit is connected by the two internal layer floral discs up and down shared, forms internal layer annular truss
Component is multi-panel formula hoop truss structure after the expansion of internal layer annular component truss and gathering；The outer annular component truss
Including 2n outer layer folding exhibition unit, the outer layer rolls over exhibition unit, and there are two types of structures altogether, i.e., outer layer folding opens up unit B and outer layer folding exhibition is single
First C, each outer layer folding exhibition unit being ranked sequentially in B-B-C are single by the folding exhibition of each outer layer by shared two outer layer floral discs up and down
Member connection forms outer annular component truss, is multi-panel formula annular truss knot after the expansion of outer annular component truss and gathering
Structure；The center fixes scissors connection component and includes n center fixation scissors folding exhibition unit, and each center fixes scissors folding and opens up unit
Structure is identical；The center movement scissors connection component includes n/2 center and moves scissors folding exhibition unit, each center movement
Scissors folding exhibition cellular construction is identical；The internal layer annular purlin of entire mixing scissor-type bilayer annular truss deployable antenna mechanism
Frame component and outer annular component truss are arranged concentric；Four internal layer floral discs up and down of internal layer folding exhibition unit both sides pass through two
Center fixes scissors folding exhibition unit and a center movement scissors folding exhibition unit and rolls over exhibition unit with corresponding two outer layers
Six outer layer floral discs up and down be connected to form double-deck annular truss mechanism, that is, mix scissor-type bilayer 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
α in formula1, α2Respectively central angle of the internal layer folding exhibition unit corresponding to outer layer folding exhibition unit；L, l is respectively internal layer
Scissors bar and the half of the length of outer layer scissors bar, when given two angle [alpha]s1, α2And during the one of length of L or l, each structure
The structure length of part will determine therewith.
There are two types of different structures, respectively internal layer floral disc A and internal layer floral disc B, internal layer folding exhibition units for four internal layer floral discs
Two internal layer disc chuck structures are identical up and down for the same side.Structure generally face symmetrical structure, the plane of symmetry of the internal layer floral disc A be referred to as
Middle face, each floral disc there are four branch fork, pitch and be respectively provided with a symmetrical opening using middle face as the plane of symmetry by two of which branch
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 are pitched
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 pair of each notch
The angle in face and middle face is referred to as
Two single notch branch pitch the plane of symmetry of each notch and the angle in middle face is
The whole structure of internal layer floral disc B is also face symmetrical structure, and the plane of symmetry is referred to as middle face, and there are three prop up for each floral disc
Fork, one of branch, which is pitched, to be set there are one single notch, which pitches using middle face as the plane of symmetry, and respectively setting two on other two branch fork opens
Mouthful slot, i.e. double flute mouth branch are pitched, and the two double flute mouth branch fork is also using middle face as the plane of symmetry, and each open slot is all provided with that there are two axis
The parallel cylindrical hole of line, two double flute mouth branch pitch the plane of symmetry of each notch and the angle in middle face is
Two internal layer scissors rod structures in internal layer folding exhibition unit are identical, and middle part is connected by revolute pair, in composition
Layer scissors folding rod, two internal layer floral disc A and two internal layer floral disc B are inserted into four free ends of every group of internal layer scissors folding rod respectively
Double flute mouth branch fork in connected in the open slot far from single notch branch fork and by revolute pair, make four internal layer floral discs symmetrical
On four vertex for rolling over exhibition unit in internal layer；
Four internal layer bar structures in internal layer folding exhibition unit are identical, and one end of each two internal layer cross bar passes through rotation
Pair connects into one group, and four internal layer cross bars form two groups of internal layer folding cross bars up and down, the other end difference of four internal layer cross bars altogether
It is inserted into another open slot of aforementioned four internal layer floral disc the same side double flute mouth branch fork, and connected by revolute pair；
Internal layer folding cross bar in same internal layer folding exhibition unit and the revolute pair axis on internal layer scissors folding rod are parallel；
Single notch branch of four internal layer floral discs pitches open slot towards outer annular component truss in each internal layer folding exhibition unit, passes through rotation
It is secondary to be connect with the center fixation scissors connection component and center movement scissors connection component being inserted into.
There are two types of different structures, respectively outer layer floral disc A and outer layer floral disc B, outer layer folding exhibition units for four outer layer floral discs
Two outer layer disc chuck structures are identical up and down for the same side.For outer layer floral disc A there are three branch fork, one of branch, which is pitched, is equipped with single notch,
Two open slots are respectively set on other two branch fork, i.e., double flute mouth branch is pitched, and each open slot is all provided with that there are two the parallel cylinders of axis
Hole.The angle that one of 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
Also there are three branch forks by outer layer floral disc B, and generally symmetrical structure, the plane of symmetry are referred to as middle face, are set on one of branch fork
There is single notch, which pitches using middle face as the plane of symmetry, and two open slots are respectively set on other two branch fork, i.e. double flute mouth branch is pitched, two pairs
Notch branch is 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, one of double flute mouths
Branch pitches the plane of symmetry of each notch and the angle in middle face face is
Two outer layer scissors rod structures in outer layer folding exhibition unit B are identical, and middle part is connected by revolute pair, and composition is outer
Layer scissors folding rod；Two outer layer floral disc A and two outer layer floral disc B are inserted into four free ends of every group of outer layer scissors folding rod respectively
Double flute mouth branch fork in connected in the open slot far from single notch branch fork and by revolute pair, make four outer layer floral discs symmetrical
On four vertex for rolling over exhibition unit in outer layer；
Four outer layer bar structures in outer layer folding exhibition unit B are identical, and one end of each two outer layer cross bar is by turning
Dynamic pair connects into one group, and four outer layer cross bars form two groups of outer layer folding cross bars up and down, the other end point of four outer layer cross bars altogether
Cha Ru not be in another open slot of aforementioned four outer layer floral disc the same side double flute mouth branch fork, and pass through revolute pair and connect；It is same outer
Outer layer folding cross bar in layer folding exhibition unit and the revolute pair axis on outer layer scissors folding rod are parallel.Each outer layer folding exhibition is single
The open slot of four floral disc list notch branch forks of member is fixed with the center being inserted by revolute pair and cut towards internal layer annular component truss
Formula connection component and center movement scissors connection component connection.
The component and combination of outer layer folding exhibition unit C is identical with outer layer folding exhibition unit B, and difference lies in it to roll over exhibition unit four
A outer layer floral disc is outer layer floral disc A, and be located at outer layer folding exhibition unit C the same sides in four outer layer floral disc A two put appearance
State is identical, and symmetrical about outer layer folding exhibition unit C median planes with two outer layer floral discs of opposite side.
The center fixes scissors folding exhibition unit and includes the identical intermediate scissors bar of two structures, two intermediate scissors bars
The intermediate scissors folding rod of composition is connected by revolute pair, the revolute pair of two intermediate scissors bars of connection is classified as two sections, two sections long
For the ratio between degree for L/l, longer one section is isometric with the half of internal layer scissors pole length, shorter one section with outer layer scissors pole length
Half is isometric；The intermediate scissors folding rod is inserted internal layer folding exhibition respectively away from the longer both ends of centre connection revolute pair distance
Unit the same side in the open slot of single notch branch fork of two internal layer floral discs and passes through two revolute pairs connections, intermediate scissors up and down
It is inserted respectively two above and below outer layer folding exhibition unit the same side away from the shorter both ends of centre connection revolute pair distance on folding rod
In the open slot of single notch branch fork of a outer layer floral disc and pass through the connection of two revolute pairs, five on intermediate scissors folding rod turn
Dynamic secondary axis is parallel.
The center movement scissors folding exhibition unit includes the identical intermediate mobile scissors bar of two structures, and centre is respectively provided with
One elongated slot, the mobile scissors bar in two centres are connected by a roller.It inserts respectively four free ends of the mobile scissors bar in the centre
In the single notch branch fork for entering two internal layer floral discs and outer layer floral disc, four turns auxiliary shafts on center movement scissors connection component
Line is parallel.
The internal layer folding exhibition unit rolls over exhibition unit structural form with outer layer and connection mode is similar, but scantling is not
Together, two internal layer scissors pole lengths are 2L, and two outer layer scissors pole lengths are 2l；In internal layer folding exhibition unit and outer layer folding exhibition unit
Corresponding rod piece be satisfied by special ratios relationship, internal layer scissors bar and outer layer folding exhibition unit in the internal layer folding exhibition unit
In outer layer scissors bar length ratio and the internal layer folding exhibition unit in internal layer cross bar and the outer layer folding exhibition unit in
Outer layer cross bar length ratio is L/l.
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 center
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 flower
The ratio between disk list notch branch fork the distance between revolute pair axis and outer layer floral disc center are L/l, during internal layer floral disc double flute mouth branch is pitched
The distance between revolute pair axis and internal layer floral disc central axis on notch far from list notch branch fork and outer layer floral disc double flute
The ratio between the distance between revolute pair axis and outer layer floral disc central axis in mouth branch fork on the notch far from list 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：
1st, rigidity is higher, and can fully meet space large caliber deployable antenna uses rigidity requirement.
2nd, engineering manufacture is had the advantages of simple structure and easy realization.
3rd, have the advantages that movement is flexible, it is bigger to fold.
4th, 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 the vertical view that Fig. 1 is fully deployed；
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；
The internal layer folding exhibition unit that Fig. 7 is the present invention is fully deployed three-dimensional simplified schematic diagram；
The outer layer folding exhibition unit B that Fig. 8 is the present invention is fully deployed three-dimensional simplified schematic diagram；
The outer layer folding exhibition unit C that Fig. 9 is the present invention is fully deployed three-dimensional simplified schematic diagram；
Scissors folding exhibition unit three-dimensional simplified schematic diagram is fixed at the center that Figure 10 is the present invention；
Figure 11 is the center movement scissors folding exhibition unit three-dimensional simplified schematic diagram of the present invention；
Figure 12 is the three-dimensional simplified schematic diagram of the internal layer floral disc A of the present invention；
Figure 13 is the three-dimensional simplified schematic diagram of the internal layer floral disc B of the present invention；
Figure 14 is the three-dimensional simplified schematic diagram of the outer layer floral disc A of the present invention；
Figure 15 is the three-dimensional simplified schematic diagram of the outer layer floral disc B of the present invention；
Figure 16 is the three-dimensional simplified schematic diagram of the roller of the present invention.
In figure：Scissors folding exhibition unit, 4- are fixed in 1- internal layer annulars component truss, 2- outer annulars component truss, 3- centers
Center movement scissors folding exhibition unit, 5- internal layers folding exhibition unit, 6- outer layers folding exhibition unit B, 7- outer layers folding exhibition unit C, 8- internal layer flower
Disk A, 9- internal layer cross bar, 10- internal layer scissors bar, 11- internal layer floral disc B, 12- outer layer floral disc A, 13- outer layers cross bar, 14- outer layers are cut
Scissors bar, the mobile scissors bar in 17- centres, 18- rollers among formula bar, 15- outer layer floral discs B, 16-.
Specific embodiment
In Fig. 1, Fig. 2, Fig. 3 and mixing scissor-type bilayer annular truss deployable antenna structural scheme of mechanism shown in Fig. 4,
Internal layer annular component truss 1 includes 12 internal layer folding exhibition units 5, identical, the adjacent internal layer of each internal layer folding exhibition cellular construction
Folding exhibition unit is connected by the two internal layer floral discs up and down shared, forms internal layer annular component truss, internal layer annular component truss
It is multi-panel formula hoop truss structure after expansion and gathering, as shown in Figure 5；Outer annular component truss 2 includes 24 outer layers and rolls over
Unit is opened up, there are two types of structure, i.e. 16 outer layer folding exhibition unit Bs 6 and 8 outer layer folding exhibition unit C altogether for the outer layer folding exhibition unit
7, each outer layer is rolled over exhibition unit by each outer layer folding exhibition unit being ranked sequentially in B-B-C by shared two outer layer floral discs up and down
Connection forms outer annular component truss, is multi-panel formula hoop truss structure after the expansion of outer annular component truss and gathering
As shown in Figure 6；The center fixes scissors connection component and includes 12 centers fixation scissors folding exhibition units 3, and each center is fixed and cut
Formula folding exhibition cellular construction is identical；The center movement scissors connection component includes 6 centers and moves scissors folding exhibition unit 4,
Each center movement scissors folding exhibition cellular construction is identical；Entire mixing scissor-type bilayer annular truss deployable antenna mechanism
Internal layer annular component truss and outer annular component truss are arranged concentric；Four internal layer flowers up and down of internal layer folding exhibition unit both sides
Disk by two centers fixes scissors folding exhibition units and a center move scissors folding exhibition unit and with corresponding two it is outer
Six outer layer floral discs up and down of layer folding exhibition unit are connected to form double-deck annular truss mechanism, that is, mix scissor-type bilayer annular truss
Deployable antenna mechanism.
As shown in Figure 7 and Figure 8, internal layer folding exhibition unit includes two internal layer scissors bars, 10, four internal layer cross bars 9 and four
Internal layer floral disc；The outer layer folding exhibition unit includes two outer layer scissors bars 14, four outer layer cross bars 13 and four outer layer floral discs；
The length relation formula that wherein internal layer scissors bar meets with outer layer scissors bar is
α in formula1, α2Respectively central angle of the internal layer folding exhibition unit corresponding to outer layer folding exhibition unit, respectively 30 °, 20 °；
L, l is respectively internal layer scissors bar and the half of the length of outer layer scissors bar, and the value of l is 300mm, then the value for determining L by above formula is
304.516mm。
As shown in Figure 12 and Figure 13, there are two types of different structures, respectively internal layer floral disc A 8 and internal layer for four internal layer floral discs
Floral disc B 11, two internal layer disc chuck structures are identical up and down for internal layer folding exhibition unit the same side.The structure of the internal layer floral disc A is generally
Face symmetrical structure, the plane of symmetry are referred to as middle face, and each floral disc there are four branch fork, pitch and be respectively provided with one with middle face by two of which branch
For the symmetrical open slot of the plane of symmetry, i.e., single notch branch fork, other two branch pitches and respectively sets two open slots, i.e. double flute mouth branch
Fork, and two double flute mouth branch fork is also using middle face as the plane of symmetry, each open slot are all provided with there are two the parallel cylindrical hole of axis, two pairs
Notch branch pitches 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
The whole structure of internal layer floral disc B is also face symmetrical structure, and the plane of symmetry is referred to as middle face, and there are three prop up for each floral disc
Fork, one of branch, which is pitched, to be set there are one single notch, which pitches using middle face as the plane of symmetry, and respectively setting two on other two branch fork opens
Mouthful slot, i.e. double flute mouth branch are pitched, and the two double flute mouth branch fork is also using middle face as the plane of symmetry, and each open slot is all provided with that there are two axis
The parallel cylindrical hole of line, two double flute mouth branch pitch the plane of symmetry of each notch and the angle in middle face is
Two internal layer scissors 10 structures of bar in internal layer folding exhibition unit are identical, and length 609.032mm, middle part passes through
Revolute pair connects, and forms internal layer scissors folding rod, and two internal layer flowers are inserted into four free ends of every group of internal 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 A and two internal layer floral disc B and by revolute pair, makes four
A internal layer floral disc is symmetrically distributed on four vertex of internal layer folding exhibition unit；
Four 9 structures of internal layer cross bar in internal layer folding exhibition unit are identical, and the length of internal layer cross bar is 233.28mm, often
One end of two internal layer cross bars connects into one group by revolute pair, and four internal layer cross bars form two groups of internal layers up and down and fold horizontal stroke altogether
Bar, the other end of four internal layer cross bars are inserted into another open slot of aforementioned four internal layer floral disc the same side double flute mouth branch fork respectively
It is interior, and connected by revolute pair；
Internal layer folding cross bar in same internal layer folding exhibition unit and the revolute pair axis on internal layer scissors folding rod are parallel；
Single notch branch of four internal layer floral discs pitches open slot towards outer annular component truss in each internal layer folding exhibition unit, passes through rotation
It is secondary to be connect with the center fixation scissors connection component and center movement scissors connection component being inserted into.
As shown in FIG. 14 and 15, there are two types of different structures, respectively outer layer floral disc A 12 and outer layer for four outer layer floral discs
Floral disc B 15, two outer layer disc chuck structures are identical up and down for outer layer folding exhibition unit the same side.There are three outer layer floral disc A, and branch is pitched, 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 all provided with
There are two the parallel cylindrical holes of axis.One of double flute mouth branch pitches the plane of symmetry of each notch and the angle of the single port slot plane of symmetry
For
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
Also there are three branch forks by outer layer floral disc B, and generally symmetrical structure, the plane of symmetry are referred to as middle face, are set on one of branch fork
There is single notch, which pitches using middle face as the plane of symmetry, and two open slots are respectively set on other two branch fork, i.e. double flute mouth branch is pitched, two pairs
Notch branch is 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, one of double flute mouths
Branch pitches the plane of symmetry of each notch and the angle in middle face is
Two outer layer scissors 14 structures of bar in outer layer folding exhibition unit B are identical, and length 600mm, middle part is by turning
Dynamic secondary connection, forms outer layer scissors folding rod；Two outer layer floral disc A are inserted into four free ends of every group of outer layer scissors folding rod respectively
With in the open slot far from single notch branch fork in the double flute mouth branch fork of two outer layer floral disc B and pass through revolute pair and connect, make four
Outer layer floral disc is symmetrically distributed on four vertex of outer layer folding exhibition unit；Four 13 knots of outer layer cross bar in outer layer folding exhibition unit B
Structure is identical, and the length of outer layer cross bar is 229.82mm, and one end of each two outer layer cross bar connects into one group by revolute pair,
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 outside aforementioned four respectively altogether
In another open slot of layer floral disc the same side double flute mouth branch fork, and connected by revolute pair；It is outer in same outer layer folding exhibition unit
Layer folding cross bar and the revolute pair axis on outer layer scissors folding rod are parallel.Each outer layer folding exhibition four floral disc list notches of unit
The open slot of branch fork fixed towards internal layer annular component truss, by revolute pair with the center being inserted into scissors connection component and in
Heart movement scissors connection component connection.
As shown in figure 9, the component and combination of outer layer folding exhibition unit C are rolled over outer layer, exhibition unit B is identical, and difference lies in it
Folding exhibition four outer layer floral discs of unit are outer layer floral disc A, and are located at outer layer folding exhibition unit C the same sides in four outer layer floral disc A
Two placing attitudes are identical, and symmetrical about outer layer folding exhibition unit C median planes with two outer layer floral discs of opposite side.
As shown in Figure 10, center fixation scissors folding exhibition unit includes the identical intermediate scissors bar 16 of two structures, length
For L+l=604.516mm, two intermediate scissors bars connect the intermediate scissors folding rod of composition by revolute pair, are cut among connection two
The revolute pair of formula bar is classified as two sections, and the ratio between two segment length are L/l=1.01505333, longer one section with internal layer scissors bar
The half of length is isometric, and shorter one section isometric with the half of outer layer scissors pole length；The intermediate scissors folding rod connects away from centre
Connect single slot that the longer both ends of revolute pair distance are inserted two internal layer floral discs above and below internal layer folding exhibition unit the same side respectively
In the open slot of mouthful branch fork and pass through two revolute pairs connections, it is shorter away from centre connection revolute pair distance on intermediate scissors folding rod
Both ends be inserted outer layer folding exhibition unit the same side respectively up and down in the open slot of single notch branch fork of two outer layer floral discs
And passing through two revolute pair connections, five revolute pair axis on intermediate scissors folding rod are parallel.
As shown in figure 11, center movement scissors folding exhibition unit includes the identical intermediate mobile scissors bar 17 of two structures,
The centre of two intermediate mobile scissors bars is opened there are one elongated slot, and the mobile scissors bar in two centres is connected by a roller 18, such as
Shown in Figure 16；Single notch of two internal layer floral discs and outer layer floral disc is inserted into four free ends of the mobile scissors bar in the centre respectively
In branch fork, four revolute pair axis on center movement scissors connection component are parallel.
Internal layer folding exhibition unit rolls over exhibition unit structural form with outer layer and connection mode is similar, but scantling is different, and two
A internal layer scissors pole length is 609.032mm, and two outer layer scissors pole lengths are 600mm, internal layer scissors bar and outer layer scissors bar
Length ratio and internal layer cross bar and outer layer cross bar length ratio be L/l=1.01505333.
Distance meets special ratios between each revolute pair axis and respective floral disc center in internal layer floral disc and outer layer floral disc
Relationship, internal layer floral disc list notch branch fork the distance between revolute pair axis and internal layer floral disc center p and outer layer floral disc list notch branch
The ratio between the distance between revolute pair axis and outer layer floral disc central axis q is pitched as p/q=L/l=1.01505333, internal layer floral disc
The distance between revolute pair axis and internal layer floral disc center in double flute mouth branch fork on the notch of separate single notch branch fork m and outer layer
The distance between revolute pair axis on notch and outer layer floral disc center far from single notch branch fork in floral disc double flute mouth branch fork n it
Than for m/n=L/l=1.01505333, close to the notch of single notch branch fork in double flute mouth branch fork on internal layer floral disc and outer layer floral disc
In revolute pair axis 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 (8)
1. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism, it is characterised in that：It includes internal layer annular truss
Scissors connection component and center movement scissors connection component are fixed in component, outer annular component truss, center；The inner layer ring
Shape component truss includes n internal layer folding exhibition unit, and each internal layer folding exhibition cellular construction is identical, and adjacent internal layer folding exhibition unit leads to
The two internal layer floral disc connections up and down shared are crossed, form internal layer annular component truss, the expansion of internal layer annular component truss and gathering
After be multi-panel formula hoop truss structure；The outer annular component truss includes 2n outer layer folding exhibition unit, the outer layer folding
Opening up unit, there are two types of structures altogether, are denoted as outer layer folding exhibition unit B and outer layer folding exhibition unit C, each outer layer folding exhibition unit is in the suitable of B-B-C
Sequence arranges, and each outer layer is rolled over exhibition unit by shared two outer layer floral discs up and down connects, and forms outer annular component truss, outside
It is multi-panel formula hoop truss structure after the expansion of layer annular truss component and gathering；The center is fixed scissors connection component and is included
Scissors folding exhibition unit is fixed at n center, and it is identical that scissors folding exhibition cellular construction is fixed at each center；The center movement scissors connect
Connected components include n/2 center and move scissors folding exhibition unit, and each center movement scissors folding exhibition cellular construction is identical；It is entire mixed
The internal layer annular component truss and outer annular component truss for closing scissor-type bilayer annular truss deployable antenna mechanism are concentric
Arrangement；Four internal layer floral discs up and down of internal layer folding exhibition unit both sides are fixed by two centers in scissors folding exhibition unit and one
Heart movement scissors folding opens up unit and is connected to form bilayer with six outer layer floral discs up and down of corresponding two outer layers folding exhibition unit
Annular truss mechanism mixes scissor-type bilayer annular truss deployable antenna mechanism.
2. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1, it is characterised in that：
The internal layer folding exhibition unit includes two internal layer scissors bars, four internal layer cross bars and four internal layer floral discs；The outer layer rolls over exhibition
Unit includes two outer layer scissors bars, four outer layer cross bars and four outer layer floral discs；Wherein internal layer scissors bar and outer layer scissors
Bar meet length relation formula be
α in formula1, α2Respectively central angle of the internal layer folding exhibition unit corresponding to outer layer folding exhibition unit；L, l are respectively internal layer scissors
Bar and the half of the length of outer layer scissors bar, when given two angle [alpha]s1, α2And during the one of length of L or l, each component
Structure length will determine therewith.
3. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：There are two types of different structures, respectively internal layer floral disc A and internal layer floral disc B for four internal layer floral discs, and it is same that internal layer folding opens up unit
Two internal layer disc chuck structures are identical up and down for side.The structure generally face symmetrical structure of the internal layer floral disc A, during the plane of symmetry is referred to as
Face, each floral disc there are four branch fork, pitch and be respectively provided with a symmetrical open slot using middle face as the plane of symmetry by two of which branch,
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 in
Face is the plane of symmetry, and each open slot is all provided with there are two the parallel cylindrical hole of axis, and two double flute mouth branch pitch the plane of symmetry of each notch
Angle with middle face is
Two single notch branch pitch the plane of symmetry of each notch and the angle in middle face is
The whole structure of internal layer floral disc B is also face symmetrical structure, and the plane of symmetry be referred to as middle face, each floral disc there are three branch fork,
In set there are one single notch on branch fork, which pitches using middle face as the plane of symmetry, and two open slots are respectively set on other two branch fork,
I.e. double flute mouth branch is pitched, and the two double flute mouth branch fork, also using middle face as the plane of symmetry, each open slot is all provided with putting down there are two axis
Capable cylindrical hole, two double flute mouth branch pitch the plane of symmetry of each notch and the angle in middle face is
Two internal layer scissors rod structures in internal layer folding exhibition unit are identical, and middle part is connected by revolute pair, and composition internal layer is cut
Pair of two internal layer floral disc A and two internal layer floral disc B are inserted into formula folding rod, four free ends of every group of internal 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, including making four internal layer floral discs symmetrical
On four vertex of layer folding exhibition unit；Four internal layer bar structures in internal layer folding exhibition unit 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 passes through rotation
Pair connection；Internal layer folding cross bar in same internal layer folding exhibition unit and the revolute pair axis on internal layer scissors folding rod are parallel；
Single notch branch of four internal layer floral discs pitches open slot towards outer annular component truss in each internal layer folding exhibition unit, passes through rotation
It is secondary to be connect with the center fixation scissors connection component and center movement scissors connection component being inserted into.
4. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：There are two types of different structures, respectively outer layer floral disc A and outer layer floral disc B for four outer layer floral discs, and it is same that outer layer folding opens up unit
Two outer layer disc chuck structures are identical up and down for side.Outer layer floral disc A is there are three branch fork, and one of branch, which is pitched, is equipped with single notch, separately
Two open slots are respectively set on outer two 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.
The angle that one of 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
Also there are three branch forks by outer layer floral disc B, and generally symmetrical structure, the plane of symmetry are referred to as middle face, and one of branch fork is equipped with single
Notch, the branch are pitched using middle face as the plane of symmetry, and two open slots are respectively set on other two branch fork, i.e. double flute mouth branch is pitched, two double flute mouths
Branch is pitched also using middle face as the plane of symmetry, and each open slot is all provided with there are two the parallel cylindrical hole of axis, and one of double flute mouth branch is pitched
Each the plane of symmetry of notch and the angle in middle face face are
Two outer layer scissors rod structures in outer layer folding exhibition unit B are identical, and middle part is connected by revolute pair, and composition outer layer is cut
Formula folding rod；Pair of two outer layer floral disc A and two outer layer floral disc B 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 notch branch fork and by revolute pair, makes four outer layer floral discs symmetrical outside
On four vertex of layer folding exhibition unit；Four outer layer bar structures in outer layer folding exhibition unit B are identical, and each two outer layer is horizontal
One end of bar connects into one group by revolute pair, and four outer layer cross bars form two groups of outer layer folding cross bars up and down, four outer layers altogether
The other end of cross bar is inserted into respectively in another open slot of aforementioned four outer layer floral disc the same side double flute mouth branch fork, and passes through rotation
Pair connection；Outer layer folding cross bar in same outer layer folding exhibition unit and the revolute pair axis on outer layer scissors folding rod are parallel.
The open slot of four floral disc list notch branch forks of each outer layer folding exhibition unit is towards internal layer annular component truss, by revolute pair with inserting
Scissors connection component and center movement scissors connection component connection are fixed in the center entered.
5. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：The component and combination of outer layer folding exhibition unit C is identical with outer layer folding exhibition unit B, and it is outer to roll over exhibition unit four difference lies in it
Layer floral disc is outer layer floral disc A, and is located at two placing attitude phases of outer layer folding exhibition unit C the same sides in four outer layer floral disc A
Together, it is and symmetrical about outer layer folding exhibition unit C median planes with two outer layer floral discs of opposite side.
6. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：The center fixes scissors folding exhibition unit and includes the identical intermediate scissors bar of two structures, and two intermediate scissors bars pass through
The intermediate scissors folding rod of revolute pair connection composition, the revolute pairs of two intermediate scissors bars of connection are classified as two sections, two segment length it
Than 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 internal layer folding exhibition unit respectively away from the longer both ends of centre connection revolute pair distance
In the open slot that single notch branch of two internal layer floral discs is pitched above and below the same side and pass through two revolute pairs connections, intermediate scissors fold
It is inserted respectively above and below outer layer folding exhibition unit the same side outside two away from the shorter both ends of intermediate connection revolute pair distance on bar
In the open slot of single notch branch fork of layer floral disc and pass through the connection of two revolute pairs, five revolute pairs on intermediate scissors folding rod
Axis is parallel；The center movement scissors connection component includes the identical intermediate mobile scissors bar of two structures, intermediate each
It opens there are one elongated slot, the mobile scissors bar in two centres is connected by a roller.Four free ends point of the mobile scissors bar in the centre
Cha Ru not be in single notch branch fork of two internal layer floral discs and outer layer floral disc, four rotations on center movement scissors connection component
Secondary axis is parallel.
7. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：The internal layer folding exhibition unit rolls over exhibition unit structural form with outer layer and connection mode is similar, but scantling is different, two
Internal layer scissors pole length is 2L, and two outer layer scissors pole lengths are 2l；It is corresponding in internal layer folding exhibition unit and outer layer folding exhibition unit
Rod piece is satisfied by special ratios relationship, and the internal layer folding is opened up outer in internal layer scissors bar and outer layer folding exhibition unit in unit
Outer layer in the length ratio of layer scissors bar and the internal layer cross bar and outer layer folding exhibition unit in internal layer folding exhibition unit is horizontal
Pole length ratio is L/l.
8. a kind of mixing scissor-type bilayer annular truss deployable antenna mechanism according to claim 1 or 2, feature exist
In：The internal layer floral disc and outer layer floral disc, distance meets between the revolute pair axis of each branch fork pockets mouth and respective floral disc center
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 floral disc list
The ratio between notch branch fork the distance between revolute pair axis and outer layer floral disc center are L/l, and internal layer floral disc double flute mouth branch is separate in pitching
The distance between revolute pair axis and internal layer floral disc central axis on the notch of single notch branch fork and outer layer floral disc double flute mouth branch
The ratio between the distance between revolute pair axis and outer layer floral disc central axis in fork on the notch of separate list notch branch fork are also L/
Revolute pair axis on l, 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 flower
The revolute pair axis in notch on disk far from single notch branch fork in double flute mouth branch fork overlaps.
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| CN109616736A (en) * | 2019-01-18 | 2019-04-12 | 燕山大学 | A kind of scissors unit mixing array formula hoop truss deployable antenna mechanism |
| CN109659658A (en) * | 2019-01-18 | 2019-04-19 | 燕山大学 | Hoop truss deployable antenna mechanism based on V-type scissors cell cube |
| CN111224210A (en) * | 2020-01-16 | 2020-06-02 | 太原理工大学 | Large-scale cable pole truss type deployable antenna mechanism |
| CN113764899A (en) * | 2021-08-04 | 2021-12-07 | 同济大学 | Net surface installation method of rib net type deployable antenna |
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| CN111224210A (en) * | 2020-01-16 | 2020-06-02 | 太原理工大学 | Large-scale cable pole truss type deployable antenna mechanism |
| CN113764899A (en) * | 2021-08-04 | 2021-12-07 | 同济大学 | Net surface installation method of rib net type deployable antenna |
| CN113764899B (en) * | 2021-08-04 | 2022-11-18 | 同济大学 | Net surface installation method of rib net type deployable antenna |
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