CN206401489U - Over-constrained scissor-type bilayer annular truss deployable antenna mechanism - Google Patents
Over-constrained scissor-type bilayer annular truss deployable antenna mechanism Download PDFInfo
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Abstract
A kind of double-deck annular truss deployable antenna mechanism of over-constrained scissor-type, it includes the annular component truss of internal layer, outer annular component truss and 2N ectonexine truss frame for connecting component；The annular component truss of the internal layer includes connecting by two shared internal layer floral discs between N number of internal layer folding exhibition unit, adjacent inner layer folding exhibition unit, the annular component truss of composition internal layer；The outer annular component truss includes connecting by sharing two outer layer floral discs between N number of outer layer folding exhibition unit, adjacent outward layer folding exhibition unit, constitutes outer annular component truss；Two internal layer floral discs up and down of the same side open up four double-deck annular truss deployable antenna mechanisms of outer layer floral disc connection composition scissor-type up and down of unit by two ectonexine truss frame for connecting components and a certain outer layer folding in each internal layer folding exhibition unit.The utility model anufacturability is good, rigidity is high, fold than big.
Description
Technical field
The present invention relates to a kind of deployable antenna mechanism.
Background technology
With continuing to develop for aerospace industry, the size of the space mechanism needed in all kinds of aerospace engineering is increasing, with
Meet the demand of different space missions.The application of space large caliber antenna can greatly improve earth observation level of resolution, defend
Star communication distance and transceiving data capacity, space generating capacity, Space surveillance and precision strike capability etc., its develop always by
Pay much attention to countries in the world.Large space folding and unfolding mechanism is in the exhibition that an important application of space industry is as large aperture antenna
Open and supporting mechanism, the heavy caliber space deployable antenna succeeded in developing at present mainly has expansion ribbed antenna, framework type to open up
Kaitian's line, Ring-cylindrical deployable antenna and annular truss formula deployable antenna.
Annular truss formula deployable antenna has that big to fold, quality smaller than, quality proportional not with the increase of bore
The characteristics of increase, be the ideal structure form of tens meters to the up to a hundred meters heavy caliber deployable antennas in space, various countries related scientific research people
Member conducts in-depth research to it, and achieves in-orbit application, but existing annular truss class of establishment is less, and
In the presence of with the increase of antenna aperture, the problem of antenna Stiffness is more serious, some annular truss deployable antennas are used
Tensioning zip realizes the raising of antenna mechanism integral rigidity, but tensioning zip is complex, is difficult to control, also reduces entirety
Reliability of structure, easily occurs wrapping phenomena during expansion, makes the expansion failure of annular truss antenna, causes huge warp
Ji loss.Therefore, the development agency for proposing the function admirables such as anufacturability is good, rigidity is high, folding ratio is big is needed badly, to meet not
With the demand of space mission.
The content of the invention
It is an object of the invention to provide a kind of anufacturability is good, rigidity is high, it is more double than big over-constrained scissor-type to fold
Layer annular truss deployable antenna mechanism.
The present invention includes the annular component truss of internal layer, outer annular component truss and 2N ectonexine truss frame for connecting component；
The annular component truss of the internal layer includes N number of internal layer folding exhibition unit, and each internal layer folding exhibition cellular construction is identical, adjacent inner layer folding
Connected between exhibition unit by two shared internal layer floral discs, the annular component truss of composition internal layer, the annular component truss exhibition of internal layer
Open and be multiaspect formula hoop truss structure after drawing in；The outer annular component truss includes N number of outer layer folding exhibition unit, each outer
Layer folding exhibition cellular construction is identical, is connected between adjacent outward layer folding exhibition unit by sharing two outer layer floral discs, constitutes outer layer
Annular truss component, is multiaspect formula hoop truss structure after the expansion of outer annular component truss and gathering；Whole Planar Mechanisms are cut
The annular component truss of V shape bilayer annular truss deployable antenna mechanism internal layer and outer annular component truss are arranged concentrically, still
Plane where each internal layer folding exhibition unit and plane where each outer layer folding exhibition unit are not parallel, the same side in each internal layer folding exhibition unit
Four outer layers up and down that two internal layer floral discs open up unit by two ectonexine truss frame for connecting components and a certain outer layer folding up and down are spent
The double-deck annular truss deployable antenna mechanism of disk connection composition scissor-type.
The internal layer folding exhibition unit, it includes two internal layer scissors rods, four internal layer connecting rods and four internal layer floral discs；It is described
Two internal layer scissors rod structures are identical, and two internal layer scissors rods are connected by revolute pair, and revolute pair is located therein a position
Place, constitutes internal layer scissor folding rod；Four free ends of every group of internal layer scissor folding rod are connected with four internal layer floral discs respectively, make four
Individual internal layer floral disc is symmetrically distributed on four summits of internal layer folding exhibition unit；Four internal layer disc chuck structures are identical, often
Individual internal layer floral disc has four branch forks, and internal layer floral disc generally face symmetrical structure, intermediate symmetry plane each side has two branch forks,
Pitched in two branch forks for list notch branch for one, another is double flute mouthful branch fork, in the notch plane of symmetry and internal layer floral disc that single notch branch is pitched
Between angle between the plane of symmetry be
The angle that two double flutes mouthful branch is pitched between the plane of symmetry of each notch and internal layer floral disc intermediate symmetry face is (90+180/N) °；It is described
Four free ends of every group of internal layer scissor folding rod are inserted double flute mouthful branch fork on four internal layer floral discs and pitched close to single notch branch respectively
Open slot in, and be connected by four revolute pairs with four internal layer floral discs, four revolute pair axis are cut with being connected two internal layers
Fork arm constitutes the revolute pair diameter parallel of internal layer scissor folding rod；Four internal layer bar linkage structures are identical, and two are one
Group, one end is connected by revolute pair, and four internal layer connecting rods constitute two groups of internal layer folding connecting rods altogether；The two of every group of internal layer folding connecting rod
End is inserted in the open slot of the remote single notch branch fork of double flute mouthful branch fork on two parallel internal layer floral discs respectively, passes through two rotations
Pair is connected with two internal layer floral discs, and two revolute pair axis constitute the revolute pair of internal layer folding connecting rod with being connected two internal layer connecting rods
Diameter parallel；The revolute pair axis on internal layer folding connecting rod and internal layer scissor folding rod in same internal layer folding exhibition unit is put down
OK.The open slot of four internal layer floral disc list notch branch fork in each internal layer folding exhibition unit outwardly, passes through revolute pair and insertion
Ectonexine truss frame for connecting component is connected.
The outer layer folding exhibition unit, it includes two outer layer scissors rods, four outer layer connecting rods and four outer layer floral discs；Described two
Individual outer layer scissors rod structure is identical, and two outer layer scissors rods are connected by revolute pair, and revolute pair is located therein at a position, group
Into outer layer scissor folding rod；Four free ends of every group of outer layer scissor folding rod are connected with four outer layer floral discs respectively, make four outer layers
Floral disc is symmetrically distributed on four summits of outer layer folding exhibition unit；Four outer layer disc chuck structures are identical, each outer layer flower
Disk has four branch forks, and outer layer floral disc generally face symmetrical structure, intermediate symmetry plane each side has two branch forks, two branch
One is single notch branch fork in fork, and another is in the middle of double flute mouthful branch fork, the notch plane of symmetry and outer layer floral disc of single notch branch fork
Angle between the plane of symmetry is
The angle that two double flutes mouthful branch is pitched between the plane of symmetry of each notch and outer layer floral disc intermediate symmetry face is (90-180/N) °；It is described
Four free ends of every group of outer layer scissor folding rod are inserted double flute mouthful branch fork on four outer layer floral discs and pitched away from single notch branch respectively
Open slot in, and be connected by four revolute pairs with four outer layer floral discs, four revolute pair axis are cut with being connected two outer layers
Fork arm constitutes the revolute pair diameter parallel of outer layer scissor folding rod；Four outer layer bar linkage structures are identical, and two are one
Group, one end is connected by revolute pair, and four outer layer connecting rods constitute two groups of outer layer folding connecting rods altogether；The two of every group of outer layer folding connecting rod
End inserts double flute mouthful branch fork on two parallel outer layer floral discs and in the open slot of single notch branch fork, passes through two rotations respectively
Pair is connected with two outer layer floral discs, and two revolute pair axis constitute the revolute pair of outer layer folding connecting rod with being connected two outer layer connecting rods
Diameter parallel；The revolute pair axis on outer layer folding connecting rod and outer layer scissor folding rod in same outer layer folding exhibition unit is put down
OK.The open slot direction of single notch branch fork on four outer layer floral discs in each outer layer folding exhibition unit inwardly, passes through revolute pair
It is connected with the ectonexine truss frame for connecting component of insertion.
The internal layer folding exhibition unit is similar with outer layer folding exhibition unit structural form and connected mode, internal layer folding exhibition unit and outer layer
Corresponding rod member in folding exhibition unit is satisfied by internal layer scissors rod and the outer layer in special ratios relation, the internal layer folding exhibition unit
The length ratio of outer layer scissors rod in folding exhibition unit and the internal layer connecting rod in internal layer folding exhibition unit and outer layer folding exhibition unit
In outer layer length of connecting rod ratio be
Revolute pair axis and internal layer floral disc central shaft on the internal layer floral disc and outer layer floral disc, each branch fork pockets mouthful of internal layer floral disc
Corresponding distance meets special ratios relation on distance and outer layer floral disc between line, internal layer floral disc list notch branch fork revolute pair axis with
Between the distance between internal layer floral disc central axis and outer layer floral disc list notch branch fork revolute pair axis and outer layer floral disc central axis
Ratio of distances constant beInternal layer
The distance between revolute pair axis and internal layer floral disc central axis in floral disc double flute mouth branch fork on the notch of single notch branch fork
Between the revolute pair axis and outer layer floral disc central axis in outer layer floral disc double flute mouthful branch fork on the notch away from single notch branch fork
Ratio of distances constant be alsoIt is interior
On revolute pair axis and this floral disc on layer floral disc in double flute mouth branch fork in the notch away from list notch branch fork in double flute mouthful branch fork
Revolute pair axis in the notch of list notch branch fork is overlapped, close to single notch branch fork in double flute mouthful branch fork on outer layer floral disc
Revolute pair axis in notch and the revolute pair axis weight in the notch away from single notch branch fork in double flute mouthful branch fork on this floral disc
Close.
The ectonexine truss frame for connecting component, it mainly includes two connection scissors rods, and described two connection scissors rod structures are complete
Exactly the same, two connection scissors rods are by revolute pair connection composition connection scissor folding rod, but connection two connects the revolute pair of scissors rod
Two sections are classified as, the ratio between two segment length are
The half of shorter one section and internal layer scissor pole length is isometric, and longer one section isometric with the half of outer layer scissor pole length；Certain
One internal layer folding exhibition unit the same side have above and below two internal layer floral discs, two single notch branch fork difference of superposed internal layer floral disc
It is connected scissor folding rod with two groups away from centre connection revolute pair two shorter upper ends of distance by revolute pair to be connected, two groups of connections
Scissor folding rod inserts two of a certain outer layer folding exhibition unit both sides away from two longer lower ends of middle connection revolute pair distance respectively
In the open slot of a single notch branch fork of the outer layer floral disc of bottom, and it is connected by revolute pair, every group of connection scissor folding
Five revolute pair axis on folded bar are parallel；Two single notch branch forks positioned at the internal layer floral disc of bottom are connected with two groups respectively
Scissor folding rod is connected away from centre connection revolute pair two shorter lower ends of distance by revolute pair, two groups of connection scissor folding rods
Insert the internal layer floral disc institute on the top with rolling over exhibition unit positioned at internal layer respectively away from two longer upper ends of middle connection revolute pair distance
In the open slot of one single notch branch fork of two superposed outer layer floral discs of outer layer folding exhibition unit both sides even, and pass through
Revolute pair is connected, and five revolute pair axis on every group of connection scissor folding rod are parallel.
The present invention has advantages below compared with prior art：
1st, the present invention is over-constraint structure, and rigidity is higher, and the use that can fully meet space large caliber deployable antenna is firm
Degree is required；
2nd, the present invention has the advantages that motion is flexible, fold than larger.
3rd, the present invention is simple in construction, and contained kinematic pair is revolute pair, it is easy to accomplish engineering is manufactured.
4th, present invention employs modular design philosophy, module autgmentability is strong, modularized production can be achieved, so that effectively
Reduce manufacturing cost and difficulty.
5th, embodiment of the present invention is simple, and reliability is high, can be applied on communications satellite, space station and space probe.
Brief description of the drawings
Fig. 1 is that the present invention is fully deployed three-dimensional simplified schematic diagram；
Fig. 2 is top view of the present invention；
Fig. 3 is that the present invention half deploys three-dimensional simplified schematic diagram；
Fig. 4 is the three-dimensional simplified schematic diagram of gathering completely of the invention；
Fig. 5 is the three-dimensional simplified schematic diagram of the annular component truss of internal layer of the present invention；
Fig. 6 is the three-dimensional simplified schematic diagram of outer annular component truss of the present invention；
Fig. 7 is the three-dimensional simplified schematic diagram of internal layer folding exhibition unit expansion of the present invention；
Fig. 8 is that internal layer folding exhibition unit of the present invention draws three-dimensional simplified schematic diagram in；
Fig. 9 is the three-dimensional simplified schematic diagram of outer layer folding exhibition unit expansion of the present invention；
Figure 10 is the three-dimensional simplified schematic diagram of ectonexine truss frame for connecting component of the present invention；
Figure 11 is the three-dimensional simplified schematic diagram of internal layer floral disc of the present invention；
Figure 12 is the three-dimensional simplified schematic diagram of outer layer floral disc of the present invention.
In figure：A：Internal layer folding exhibition unit, B：Outer layer folding exhibition unit, C：Ectonexine truss frame for connecting component；1：Internal layer scissors rod,
2：Internal layer connecting rod, 3：Internal layer floral disc, 4：Outer layer scissors rod, 5：Outer layer connecting rod, 6：Outer layer floral disc, 7：Connect scissors rod.
Embodiment
In the signal of the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4
In sketch, it includes annular component truss (as shown in Figure 5) the outer annular component truss (as shown in Figure 6) of internal layer and 2N inside and outside
Layer truss frame for connecting component C；The annular component truss of the internal layer includes N number of internal layer folding exhibition unit A, and each internal layer folding exhibition cellular construction is complete
It is exactly the same, connected between adjacent inner layer folding exhibition unit by two shared internal layer floral discs, the annular component truss of composition internal layer is interior
It is multiaspect formula hoop truss structure after the expansion of layer annular truss component and gathering；The outer annular component truss includes N number of
Outer layer folding exhibition unit B, each outer layer folding exhibition cellular construction is identical, by sharing two outer layers between adjacent outward layer folding exhibition unit
Floral disc is connected, and is constituted outer annular component truss, is multiaspect formula annular truss after the expansion of outer annular component truss and gathering
Structure；The annular component truss of the whole double-deck annular truss deployable antenna mechanism internal layer of over-constrained scissor-type and outer annular truss
Component is arranged concentrically, but plane where each internal layer folding exhibition unit and plane where each outer layer folding exhibition unit are not parallel, each internal layer
Two internal layer floral discs up and down of the same side are single by two ectonexine truss frame for connecting components and the folding exhibition of a certain outer layer in folding exhibition unit
Four double-deck annular truss deployable antenna mechanisms of outer layer floral disc connection composition scissor-type up and down of member.
In the internal layer of the present invention folding exhibition unit three-dimensional simplified schematic diagram shown in Fig. 7 and Fig. 8, it includes two internal layer scissors rods
1, four internal layer connecting rods 2 and four internal layer floral discs 3；Described two internal layer scissors rod structures are identical, two internal layer scissors rods
Connected by revolute pair, revolute pair is located therein at a position, constitute internal layer scissor folding rod；Every group of internal layer scissor folding rod four
Individual free end is connected with four internal layer floral discs respectively, four internal layer floral discs is symmetrically distributed in four summits of internal layer folding exhibition unit
On；Four internal layer disc chuck structures are identical, as shown in figure 11, and each internal layer floral disc has four branch forks, internal layer floral disc
Generally face symmetrical structure, it is single notch branch fork that intermediate symmetry plane, which each side has in two branch forks, two branch forks one,
Another is double flute mouthful branch fork, and the angle between the notch plane of symmetry of single notch branch fork and internal layer floral disc intermediate symmetry face isTwo pairs
The angle that notch branch pitches between the plane of symmetry of each notch and internal layer floral disc intermediate symmetry face be 105 ° ((90+180/12) °=
105°)；It is close that double flute mouthful branch fork on four internal layer floral discs is inserted in four free ends of every group of internal layer scissor folding rod respectively
In the open slot of single notch branch fork, and it is connected by four revolute pairs with four internal layer floral discs, four revolute pair axis are with being connected
Two internal layer scissors rods constitute the revolute pair diameter parallel of internal layer scissor folding rod；The complete phase of four internal layer bar linkage structures
Together, two are one group, and one end is connected by revolute pair, and four internal layer connecting rods constitute two groups of internal layer folding connecting rods altogether；Every group of internal layer
The two ends of folding connecting rod are inserted on two parallel internal layer floral discs in open slot of the double flute mouthful branch fork away from single notch branch fork respectively,
It is connected by two revolute pairs with two internal layer floral discs, two revolute pair axis are folded with being connected two internal layer connecting rod composition internal layers
The revolute pair diameter parallel of connecting rod；The rotation on internal layer folding connecting rod and internal layer scissor folding rod in same internal layer folding exhibition unit
Secondary axis is parallel.The open slot of four internal layer floral disc list notch branch fork in each internal layer folding exhibition unit outwardly, passes through rotation
It is secondary to be connected with ectonexine truss frame for connecting component that is inserting.
In the three-dimensional simplified schematic diagram of outer layer of the present invention folding exhibition unit expansion shown in Fig. 9, it includes two outer layer scissors rods
4, four outer layer connecting rods 5 and four outer layer floral discs 6；Described two outer layer scissors rod structures are identical, two outer layer scissors rods
Connected by revolute pair, revolute pair is located therein at a position, constitute outer layer scissor folding rod；Every group of outer layer scissor folding rod four
Individual free end is connected with four outer layer floral discs respectively, four outer layer floral discs is symmetrically distributed in four summits of outer layer folding exhibition unit
On；Four outer layer disc chuck structures are identical, as shown in figure 12, and each outer layer floral disc has four branch forks, outer layer floral disc
Generally face symmetrical structure, it is single notch branch fork that intermediate symmetry plane, which each side has in two branch forks, two branch forks one,
Another is double flute mouthful branch fork, and the angle between the notch plane of symmetry of single notch branch fork and outer layer floral disc intermediate symmetry face isTwo pairs
The angle that notch branch pitches between the plane of symmetry of each notch and outer layer floral disc intermediate symmetry face be 75 ° ((90-180/12) °=
75°)；It is remote single that double flute mouthful branch fork on four outer layer floral discs is inserted in four free ends of every group of outer layer scissor folding rod respectively
In the open slot of notch branch fork, and it is connected by four revolute pairs with four outer layer floral discs, four revolute pair axis are with being connected two
Individual outer layer scissors rod constitutes the revolute pair diameter parallel of outer layer scissor folding rod；Four outer layer bar linkage structures are identical,
Two are one group, and one end is connected by revolute pair, and four outer layer connecting rods constitute two groups of outer layer folding connecting rods altogether；Every group of outer layer is folded
The two ends of connecting rod are inserted double flute mouthful branch fork on two parallel outer layer floral discs and in the open slot of single notch branch fork, passed through respectively
Two revolute pairs are connected with two outer layer floral discs, and two revolute pair axis are with being connected two outer layer connecting rod composition outer layer folding connecting rods
Revolute pair diameter parallel；The turns auxiliary shaft on outer layer folding connecting rod and outer layer scissor folding rod in same outer layer folding exhibition unit
Line is parallel.The open slot direction of single notch branch fork on four outer layer floral discs in each outer layer folding exhibition unit inwardly, passes through
Revolute pair is connected with the ectonexine truss frame for connecting component inserted.
In the internal layer folding exhibition unit of the invention shown in Fig. 7, Fig. 8 and Fig. 9 and outer layer folding exhibition unit three-dimensional simplified schematic diagram, institute
Internal layer folding exhibition unit is stated similar with outer layer folding exhibition unit structural form and connected mode, in internal layer folding exhibition unit and outer layer folding exhibition unit
Corresponding rod member be satisfied by special ratios relation, in the internal layer scissors rod and outer layer folding exhibition unit in the internal layer folding exhibition unit
Outer layer scissors rod length internal layer connecting rod and outer layer folding exhibition unit when in internal layer folding exhibition unit in outer layer connecting rod
Length ratio is
In the internal layer floral disc of the invention shown in Figure 11 and Figure 12 and the three-dimensional simplified schematic diagram of outer layer floral disc, internal layer
It is corresponding on distance and outer layer floral disc between revolute pair axis and internal layer floral disc central axis on floral disc each branch fork pockets mouthful
Distance meets special ratios relation, between internal layer floral disc list notch branch fork revolute pair axis and internal layer floral disc central axis
The ratio between the distance between distance and outer layer floral disc list notch branch fork revolute pair axis and outer layer floral disc central axis are Internal layer
The distance between revolute pair axis in floral disc double flute mouthful branch fork on the notch of single notch branch fork and internal layer floral disc central axis and
Between revolute pair axis on notch and outer layer floral disc central axis away from single notch branch fork in outer layer floral disc double flute mouthful branch fork away from
From the ratio between be Internal layer
The revolute pair axis in notch on floral disc away from single notch branch fork in double flute mouthful branch fork on this floral disc in double flute mouthful branch fork with leaning on
Revolute pair axis in the notch of nearly list notch branch fork is overlapped, the groove on outer layer floral disc in double flute mouthful branch fork close to single notch branch fork
Revolute pair axis in mouthful is overlapped with the revolute pair axis in the notch away from single notch branch fork in double flute mouthful branch fork on this floral disc.
In the three-dimensional simplified schematic diagram of ectonexine truss frame for connecting component of the present invention shown in Figure 10, it mainly includes two connections
Scissors rod 7, described two connection scissors rod structures are identical, and two connection scissors rods are cut by revolute pair connection composition connection
Folding rod is pitched, but the revolute pair of the connection scissors rod of connection two is classified as two sections, and the ratio between two segment length are Compared with
The half of short one section and internal layer scissor pole length is isometric, and longer one section isometric with the half of outer layer scissor pole length.Exist again
In Fig. 1, a certain internal layer folding exhibition unit the same side have above and below two internal layer floral discs, two single notches of superposed internal layer floral disc
Branch fork is connected scissor folding rod with two groups and is connected away from centre connection revolute pair two shorter upper ends of distance by revolute pair respectively, should
Two groups of connection scissor folding rods insert a certain outer layer folding exhibition unit two respectively away from two longer lower ends of centre connection revolute pair distance
Two of side are located in the open slot of a single notch branch fork of the outer layer floral disc of bottom, and are connected by revolute pair, every group of company
The five revolute pair axis connect on scissor folding rod are parallel；Positioned at bottom two of internal layer floral disc single notch branch forks respectively with
Two groups of connection scissor folding rods are connected away from centre connection revolute pair two shorter lower ends of distance by revolute pair, and two groups of connections are cut
Fork folding rod is inserted and in the top that internal layer rolls over exhibition unit respectively away from two longer upper ends of middle connection revolute pair distance
The open slot of one single notch branch fork of two superposed outer layer floral discs of the connected outer layer folding exhibition unit both sides of layer floral disc
In, and be connected by revolute pair, five revolute pair axis on every group of connection scissor folding rod are parallel.
Claims (6)
1. a kind of double-deck annular truss deployable antenna mechanism of over-constrained scissor-type, it is characterised in that：It includes the annular purlin of internal layer
Frame component, outer annular component truss and 2N ectonexine truss frame for connecting component；The annular component truss of the internal layer is included in N number of
Layer folding exhibition unit, each internal layer folding exhibition cellular construction is identical, and two shared internal layers are passed through between adjacent inner layer folding exhibition unit
Floral disc connection, composition internal layer annular component truss is multiaspect formula annular truss after internal layer annular component truss expansion and gathering
Structure；The outer annular component truss includes N number of outer layer folding exhibition unit, and each outer layer folding exhibition cellular construction is identical, adjacent
Connected between outer layer folding exhibition unit by sharing two outer layer floral discs, constitute outer annular component truss, outer annular truss group
Part is multiaspect formula hoop truss structure after deploying and drawing in；The whole double-deck annular truss deployable antenna machine of over-constrained scissor-type
Structure internal layer annular component truss and outer annular component truss are arranged concentrically, but each internal layer folding opens up unit place plane and each outer
Plane where layer folding exhibition unit is not parallel, and two internal layer floral discs up and down of the same side pass through inside and outside two in each internal layer folding exhibition unit
Four double-deck annular truss of outer layer floral disc connection composition scissor-type up and down of layer truss frame for connecting component and a certain outer layer folding exhibition unit
Deployable antenna mechanism.
2. the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type according to claim 1, it is characterised in that：Institute
Internal layer folding exhibition unit is stated, it includes two internal layer scissors rods, four internal layer connecting rods and four internal layer floral discs；Described two internal layers are cut
Fork arm structure is identical, and two internal layer scissors rods are connected by revolute pair, and revolute pair is located therein at a position, constitutes internal layer
Scissor folding rod；Four free ends of every group of internal layer scissor folding rod are connected with four internal layer floral discs respectively, make four internal layer floral discs
On four summits for being symmetrically distributed in internal layer folding exhibition unit；Four internal layer disc chuck structures are identical, each internal layer floral disc
There are four branch forks, internal layer floral disc generally face symmetrical structure, intermediate symmetry plane each side has two branch forks, two branch
One is single notch branch fork in fork, and another is in the middle of double flute mouthful branch fork, the notch plane of symmetry and internal layer floral disc of single notch branch fork
Angle between the plane of symmetry is
The angle that two double flutes mouthful branch is pitched between the plane of symmetry of each notch and internal layer floral disc intermediate symmetry face is (90+180/N) °；It is described
Four free ends of every group of internal layer scissor folding rod are inserted double flute mouthful branch fork on four internal layer floral discs and pitched close to single notch branch respectively
Open slot in, and be connected by four revolute pairs with four internal layer floral discs, four revolute pair axis are cut with being connected two internal layers
Fork arm constitutes the revolute pair diameter parallel of internal layer scissor folding rod；Four internal layer bar linkage structures are identical, and two are one
Group, one end is connected by revolute pair, and four internal layer connecting rods constitute two groups of internal layer folding connecting rods altogether；The two of every group of internal layer folding connecting rod
End is inserted in the open slot of the remote single notch branch fork of double flute mouthful branch fork on two parallel internal layer floral discs respectively, passes through two rotations
Pair is connected with two internal layer floral discs, and two revolute pair axis constitute the revolute pair of internal layer folding connecting rod with being connected two internal layer connecting rods
Diameter parallel；The revolute pair axis on internal layer folding connecting rod and internal layer scissor folding rod in same internal layer folding exhibition unit is put down
OK, the open slot of four internal layer floral disc list notch branch fork in each internal layer folding exhibition unit outwardly, passes through revolute pair and insertion
Ectonexine truss frame for connecting component is connected.
3. the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type according to claim 1, it is characterised in that：Institute
Outer layer folding exhibition unit is stated, it includes two outer layer scissors rods, four outer layer connecting rods and four outer layer floral discs；Described two outer layers are cut
Fork arm structure is identical, and two outer layer scissors rods are connected by revolute pair, and revolute pair is located therein at a position, constitutes outer layer
Scissor folding rod；Four free ends of every group of outer layer scissor folding rod are connected with four outer layer floral discs respectively, make four outer layer floral discs
On four summits for being symmetrically distributed in outer layer folding exhibition unit；Four outer layer disc chuck structures are identical, each outer layer floral disc
There are four branch forks, outer layer floral disc generally face symmetrical structure, intermediate symmetry plane each side has two branch forks, two branch
One is single notch branch fork in fork, and another is in the middle of double flute mouthful branch fork, the notch plane of symmetry and outer layer floral disc of single notch branch fork
Angle between the plane of symmetry is
The angle that two double flutes mouthful branch is pitched between the plane of symmetry of each notch and outer layer floral disc intermediate symmetry face is (90-180/N) °；It is described
Four free ends of every group of outer layer scissor folding rod are inserted double flute mouthful branch fork on four outer layer floral discs and pitched away from single notch branch respectively
Open slot in, and be connected by four revolute pairs with four outer layer floral discs, four revolute pair axis are cut with being connected two outer layers
Fork arm constitutes the revolute pair diameter parallel of outer layer scissor folding rod；Four outer layer bar linkage structures are identical, and two are one
Group, one end is connected by revolute pair, and four outer layer connecting rods constitute two groups of outer layer folding connecting rods altogether；The two of every group of outer layer folding connecting rod
End inserts double flute mouthful branch fork on two parallel outer layer floral discs and in the open slot of single notch branch fork, passes through two rotations respectively
Pair is connected with two outer layer floral discs, and two revolute pair axis constitute the revolute pair of outer layer folding connecting rod with being connected two outer layer connecting rods
Diameter parallel；The revolute pair axis on outer layer folding connecting rod and outer layer scissor folding rod in same outer layer folding exhibition unit is put down
OK, the open slot direction of single notch branch fork on four outer layer floral discs in each outer layer folding exhibition unit inwardly, passes through revolute pair
It is connected with the ectonexine truss frame for connecting component of insertion.
4. the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type according to claim 1, it is characterised in that：Institute
State internal layer folding exhibition unit similar with outer layer folding exhibition unit structural form and connected mode, internal layer folding exhibition unit and outer layer folding exhibition unit
In corresponding rod member be satisfied by special ratios relation, the internal layer scissors rod and outer layer folding exhibition in the internal layer folding exhibition unit are single
The length ratio of outer layer scissors rod in member and internal layer connecting rod and outer layer folding in internal layer folding exhibition unit are opened up in unit
Outer layer length of connecting rod ratio be
5. the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type according to claim 1, it is characterised in that：Institute
State the spacing of the revolute pair axis and internal layer floral disc central axis on internal layer floral disc and outer layer floral disc, each branch fork pockets mouthful of internal layer floral disc
From with it is corresponding on outer layer floral disc with a distance from meet special ratios relation, internal layer floral disc list notch branch fork revolute pair axis is spent with internal layer
The distance between disk center's axis and outer layer floral disc list notch branch fork revolute pair axis and outer layer floral disc central axis between away from
From the ratio between beInternal layer floral disc
The distance between revolute pair axis in double flute mouthful branch fork on the notch of single notch branch fork and internal layer floral disc central axis and
Between revolute pair axis and outer layer floral disc central axis in outer layer floral disc double flute mouthful branch fork on the notch away from single notch branch fork
Ratio of distances constant be alsoIt is interior
On revolute pair axis and this floral disc on layer floral disc in double flute mouth branch fork in the notch away from list notch branch fork in double flute mouthful branch fork
Revolute pair axis in the notch of list notch branch fork is overlapped, close to single notch branch fork in double flute mouthful branch fork on outer layer floral disc
Revolute pair axis in notch and the revolute pair axis weight in the notch away from single notch branch fork in double flute mouthful branch fork on this floral disc
Close.
6. the double-deck annular truss deployable antenna mechanism of over-constrained scissor-type according to claim 1, it is characterised in that：Institute
Ectonexine truss frame for connecting component is stated, it mainly includes two connection scissors rods, described two connection scissors rod structures are identical,
Two connection scissors rods by revolute pair connection composition connection scissor folding rod, but connection two connect scissors rods revolute pair by its
It is divided into two sections, the ratio between two segment length are
The half of shorter one section and internal layer scissor pole length is isometric, and longer one section isometric with the half of outer layer scissor pole length；Certain
One internal layer folding exhibition unit the same side have above and below two internal layer floral discs, two single notch branch fork difference of superposed internal layer floral disc
It is connected scissor folding rod with two groups away from centre connection revolute pair two shorter upper ends of distance by revolute pair to be connected, two groups of connections
Scissor folding rod inserts two of a certain outer layer folding exhibition unit both sides away from two longer lower ends of middle connection revolute pair distance respectively
In the open slot of a single notch branch fork of the outer layer floral disc of bottom, and it is connected by revolute pair, every group of connection scissor folding
Five revolute pair axis on folded bar are parallel；Two single notch branch forks positioned at the internal layer floral disc of bottom are connected with two groups respectively
Scissor folding rod is connected away from centre connection revolute pair two shorter lower ends of distance by revolute pair, two groups of connection scissor folding rods
Insert the internal layer floral disc institute on the top with rolling over exhibition unit positioned at internal layer respectively away from two longer upper ends of middle connection revolute pair distance
In the open slot of one single notch branch fork of two superposed outer layer floral discs of outer layer folding exhibition unit both sides even, and pass through
Revolute pair is connected, and five revolute pair axis on every group of connection scissor folding rod are parallel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106252818A (en) * | 2016-08-31 | 2016-12-21 | 燕山大学 | Over-constrained scissor-type bilayer annular truss deployable antenna mechanism |
| CN106252818B (en) * | 2016-08-31 | 2018-09-04 | 燕山大学 | Over-constrained scissor-type bilayer annular truss deployable antenna mechanism |
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