CN102173312A - Large spatial assembly type antenna reflector modular unit and assembly method thereof - Google Patents
Large spatial assembly type antenna reflector modular unit and assembly method thereof Download PDFInfo
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- CN102173312A CN102173312A CN201110057519XA CN201110057519A CN102173312A CN 102173312 A CN102173312 A CN 102173312A CN 201110057519X A CN201110057519X A CN 201110057519XA CN 201110057519 A CN201110057519 A CN 201110057519A CN 102173312 A CN102173312 A CN 102173312A
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Abstract
The invention discloses a large spatial assembly type antenna reflector modular unit and an assembly method thereof. The modular unit comprises a hexagonal extensible truss, a reflecting rope net and a rope connecting device, wherein the hexagonal extensible truss comprises top hinges, a synchronous power hinge, annular rods, and middle slanting poles; two annular rods with the same length form a synchronous folding rod through the synchronous power hinge, and the synchronous power hinge is connected with two middle slanting poles through three top hinges to form a planar triangle structural unit; 12 planar triangle structural units are connected with one another by sharing the middle slanting poles and the top hinges to form a ring, namely the truss of the antenna reflector modular unit; during connection, synchronous folding rods of two adjacent triangle structural units are spatially staggered with each other, and two layers of hexagons with different sizes and staggered vertexes are formed spatially; the reflecting rope net comprises a metal net for reflecting electromagnetic waves and an adjusting rope for adjusting the shape surface of the metal net; the metal net is sewed on the adjusting rope which is fixed with the truss of the modular unit through the top hinges; and the rope connecting device is mainly used for connecting and fixing the reflecting rope net and the hexagonal extensible truss.
Description
Technical field
The present invention relates to a kind of modular unit and assemble method thereof of large space assembly type antenna reflector, belong to satellite antenna parasite technical field.
Background technology
The geometric envelope space of carrier rocket and the installation dimension of satellite have retrained and have limited the application of super large caliber antenna on satellite to a certain extent, adopt space assembly type antenna technology to address this problem.
Space assembly type antenna basic comprising comprises: space assembly type parasite, large-scale extending arm and large-scale feed battle array are formed, and wherein, space assembly type parasite is the core of space assembly type antenna.
Space assembly type parasite adopts has the independent modular unit that launches function, modular unit is carried out in the rail expansion in a certain order, assembled at rail, integrated assembling forms a kind of space truss structure with certain rigidity, and antenna aperture, profile precision are determined by the number and the assembling form between each module of modular unit.
NASA (NASA) has reported a kind of modular unit at rail assembly type antenna reflector (NASA Contractor Report 3316), and this modular unit mainly is made up of parts such as hexagon reflecting surface, electronic development mechanism, cross rod, triangular support struts, floral disc, hinge, joints.The hexagon reflecting surface is connected on the triangular support struts by cross rod as the main body of modular unit.The hexagon reflecting surface of each unit has constituted the entire emission face of assembly type antenna after assembling.
Launch and the gathering principle: in the expansion process of modular unit, modular unit is in rounding state during beginning, after removing the constrained force of drawing in, on, spring expanding unit in the middle of the following floral disc produces initial expansion power, electronic development mechanism drive floral disc down along the center link of last floral disc to lower slider, simultaneously, torsion spring between last radial bars and the last floral disc, torsion spring between following radial bars and the following floral disc also all produces certain expansion power, move downward in the process at following floral disc, on, following radial bars is respectively around last, following floral disc is downward, outwards trail, have synchronous rotary gemel to connect between each radial bars, thereby the hexagon reflecting surface is synchronously downwards at expansion process, outwards trail.Expansion along with hexagon reflecting surface radial bars, cross rod drives cross-garnet butt along with radial bars is launched gradually, triangle hoop bar also launches under the effect of bottom hinge chain torsion spring expansion power, bottom hinge chain space position constraint, the power of rotary gemel expansion synchronously simultaneously, after all rod members launch to put in place, lock upper and lower floral disc, synchronous rotary gemel, cross-garnet butt, the modular unit that just can obtain having certain rigidity of structure.
When the hexagon reflecting surface launched, cross-garnet butt was along with the expansion of hexagon radial bars, and the angle of its hinge pin and horizontal surface tapers to 90 ° from 0 °, and this process is equivalent to cross-garnet butt by flip horizontal to vertical position.Hinge is gone up the position of floral disc relatively also in continuous variation, and the torsion spring effect lower edge cross-garnet butt of cross rod between itself and cross-garnet butt launches.
This modular unit is cylindric after drawing in, and the size of drawing body diameter in is relevant with selected bar thickness, and the length after the gathering is equivalent to the circumscribed circle diameter of 5/8 times of modular unit.
NASA hexagon assembling modular unit launches and gathering process complexity, needs electronic development mechanism in the expansion process, deployment control device etc.Therefore, relative satellite or space station platform, this assembly type antenna have shortcomings such as power consumption is big, the expansion reliability is low.
U.S. Pat 2002063660, patent name " LIGHT WEIGHT; COMPACTLY DEPLOYABLE SUPPORT STRUCTURE WITH TELESCOPING MEMBERS ", in introduced a kind of ring stand structure parasite, parasite is mainly by four bar hinges, the drag-line bar, the rope net is formed, per two drag-line bars are connected to form the polygon ring by four bar hinges, respectively connect a drag-line bar up and down in the space of each four bar hinge again, with rope these drag-line bars are pulled into a kind of Spatial Cable net truss structure at last, by changing the polygon ring that drag-line bar and the quantity of four bar hinges can realize multiple limit number, this patented technology successfully is used for the Skyterro-1 satellite of launching in 2010; This truss is mainly used in the list of making bore 5-30 rice and pays antenna, and is different with the modular assembly type antenna of the application's research.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, the space assembly type antenna reflector modular unit and the assemble method thereof of a kind of zero-power, high reliability is provided, in addition, that this unit also has is in light weight, take in and compare advantages of higher.
Technical solution of the present invention is: large space assembly type antenna reflector modular unit comprises hexagon expandable truss, reflection netting; Described hexagon expandable truss comprises crown hinge chain, synchronous dynamic hinge, hoop bar, middle brace; Two hoop bars that length is identical are formed synchronous folding rod by the synchronous dynamic hinge, a synchronous folding rod and two middle braces connect to form a plane triangle structural unit by three crown hinge chains, 12 plane triangle structural units interconnect by brace in the middle of shared and crown hinge chain, form a ring-type and promptly form antenna reflector modular unit truss, the synchronous folding rod of adjacent two triangular structure unit spatially staggers mutually during connection, spatially form two-layerly vary in size, hexagon that vertex position is staggered; Reflection netting comprises that metal gauze that reflection electromagnetic wave uses and the adjustment rope of adjusting metal net form face, metal gauze are sewn to be adjusted on the rope, adjusts rope and is connected, fixes by the connection rope device that is installed in the crown hinge chain with above-mentioned modular unit truss.
Described crown hinge chain comprises rocker bar bearing, two-dimentional swivel, synchronous folding rod joint, middle brace joint, auxiliary power spring, by rocker bar bearing the crown hinge chain is divided into synchronizing bar layer and brace layer; The upper surface of the synchronizing bar layer of rocker bar bearing is a V-type, and the V-type angle is consistent with modular unit hexagon angle, and the brace layer segment of rocker bar bearing is positioned at the V-type lower surface of synchronizing bar layer; Four two-dimentional swivels are installed in the both sides of V-type two ends, brace layer segment respectively by bearing; Folding rod joint one end is connected with the two-dimentional swivel of synchronizing bar layer by axle synchronously, forms cavity between the two; Middle brace joint one end is connected with the two-dimentional swivel of brace layer by axle, forms cavity between the two; The auxiliary power spring is installed in the above-mentioned cavity and passes the interior axle of cavity.
Large space assembly type antenna reflector modular unit assemble method, step is as follows:
The first step, concrete configuration according to antenna reflector to be designed, the concrete dimensional structure of diverse location place modular unit in the designing antenna parasite, make that the front surface of assembling aft antenna parasite is the curved surface truss in the dense non-porous crack of hexagon formation, the rear surface is the mixed uniformly curved surface truss of hexagon and triangle, interlayer is middle brace structure, and per three meet at the middle brace of same point and the triangle formation space tetrahedral structure of rear surface; Above-mentioned modular unit is above-mentioned large space assembly type antenna reflector modular unit;
In second step, according to modular unit residing position in antenna reflector, with the crown hinge chain on each modular unit and each modular unit numbering, give in any crown hinge chain numbering the adjacent block unit has identical element;
The 3rd step, the modular unit at fixed antenna parasite center, by from the center outward the principle of from coil to coil according to each modular unit of numbering assembling.
The present invention's advantage compared with prior art is:
(1) modular unit of the present invention is to launch power with the spring, launches the reliability height, and power consumption is little, and the expansion good rigidity after the unit expansion, and it is little to draw volume in after drawing in, takes in than height.
(2) the crown hinge chain among the present invention both provided the angle that rotates freely that sphere 360 spends for the expansion of synchronous folding rod and middle brace with drawing in, make modular unit can realize smoothly drawing in and expansion, in addition, the torsion spring in the crown hinge chain provides the auxiliary power that launches for the expansion of module.
(3) assembling mode of the present invention can make the reflecting surface after the assembling not have the slit, and the parasite after the assembling can form stable space truss structure, can change the rigidity of structure of parasite by the length of brace in the middle of designing, and rigidity has designability.
Description of drawings
Fig. 1 can assemble the reflector module cell schematics for the present invention;
Fig. 2 is Fig. 1 midplane triangle scheme drawing;
Fig. 3 launches to draw in the motion process scheme drawing for Fig. 2;
Fig. 4 is a hexagon expandable truss scheme drawing of the present invention;
Fig. 5 is a crown hinge chain scheme drawing of the present invention;
Fig. 6 is a synchronising hinge scheme drawing of the present invention;
Fig. 7 joins rope device and crown hinge chain scheme of installation for the present invention;
Fig. 8 is a modular unit deployed condition scheme drawing of the present invention;
Fig. 9 is a rounding state scheme drawing of the present invention;
Figure 10 is the present invention's half rounding state scheme drawing;
Figure 11 is modular unit assembling scheme drawing of the present invention.
The specific embodiment
The present invention proposes a kind of independent assembled reflector module unit 1 that launches function that has, and this modular unit 1 is made up of hexagon expandable truss 2, reflection netting 3, connection rope device 4, as shown in Figure 1.Introduce the implementation procedure of each several part below in detail.
1. the hexagon expandable truss 2
The structure of hexagon expandable truss 2 is composed as follows:
Hexagon expandable truss 2 is made up of plane triangle 5, plane triangle 5 is made up of synchronous folding rod 6 and two middle braces 7 again, folding rod 6 is formed by connecting by the synchronizing bar 8 usefulness synchronous dynamic hinges 9 (also claiming synchronising hinge 9) of equal in length again synchronously, and this synchronous folding rod 6 can be realized the synchronous expansion function of synchronizing bar 8; Plane triangle 5 constitutes as shown in Figure 2, and it launches to draw motion process in as shown in Figure 3, and folding rod 6 launches around middle synchronising hinge 9 synchronously in expansion process, and braces 7 launch around between the two crown hinge chain 10 in the middle of two.Above-mentioned 12 plane triangles 5 are connected to form a ring-type by crown hinge chain 10 promptly form hexagon expandable truss 2, the synchronous folding rod 6 of adjacent two plane triangles 5 spatially staggers mutually during connection, as shown in Figure 4.Obtain the hexagon truss of different bores, differing heights by the big I that changes plane triangle 5.
2. reflect netting 3
3. join rope device 4
4. expansion of the present invention and gathering principle
Deployed condition of the present invention as shown in Figure 8, rounding state is as shown in Figure 9.
The gathering process: each distaff center, the limit synchronising hinge that will go up hexagonal rod draws in downwards, to descend each distaff center, limit synchronising hinge of hexagonal rod upwards to draw in simultaneously, angle in the middle of reducing again between the brace, modular unit is progressively shunk, when unit volume is shunk, the center brace also shortens gradually, the final modular unit of realizing drawing in back size minimum, and half rounding state is as shown in figure 10.
Expansion process: truss provides expansion power by synchronous dynamic hinge and crown hinge chain during expansion, and expansion process is the inverse process of gathering process, and locking is implemented in the back of launching to put in place in the synchronous dynamic hinge can constitute modular unit a stable loop configuration.
5. implementation method is assembled in the unit
Large space assembly type antenna is assembled after rail launches by each modular unit, modular unit self draw in expansion process as previously mentioned, therefore, geometric relationship between setting-up procedure at rail assembling mode, each modular unit, assembling antenna and the space platform of the modular unit of emphasis consideration here, the alerting ability of assembly aids etc., in addition, the connection of the assembling between modular unit needs are simple to operate, reliability is high.Therefore, large space assembly type antenna reflector assemble method is summarized as follows:
● the modular unit assembling design:
At modular unit in when design, concrete configuration according to antenna reflector to be designed, for example launch the curved surface radian that the back forms, parasite thickness or the like, the synchronous folding rod of appropriate design modular unit and middle brace, make entire emission device assembling back form the curved surface truss in the dense non-porous crack that a kind of front surface is made of hexagon, the rear surface is the mixed uniformly curved surface truss of hexagon and triangle, and interlayer is middle brace structure; The triangle of per three middle braces that meet at same point and rear surface forms the space tetrahedral structure, has the good rigidity of structure after making space assembly type parasite assembling;
● the modular unit assemble method:
According to modular unit residing position in parasite, with each modular unit, and the crown hinge chain on each modular unit numbering, give in any crown hinge chain numbering the adjacent block unit has identical element; For example can be with the modular unit numbering 1 at antenna reflector center, 6 modular units that are adjacent according to cw or conter clockwise number consecutively 2～7, being numbered and giving the crown hinge chain of any in 1,2 the modular unit label to be 1a, 2a, and a is the identical element in the numbering.From coil to coil stack-mounted principle is outward pressed from the center in the unit of elder generation's permanent center during assembling, will have the crown hinge chain of the reference numeral of annexation unit to connect by assembling mechanism, as shown in figure 11;
● modular unit assembling scheme:
In parasite space assembling scheme, adopt the one dimension retractor device, the center module unit of assembling antenna reflector is fixed on can be on the device that the parasite center shaft rotates, get the unit of corresponding numbering, be transported to by the center cell that has placed by the one dimension retractor device, the crown hinge chain of reference numeral is assembled by assembling mechanism, assembling is finished rear reflector and is turned an angle, prepare the next unit of assembling, the method of installing according to the outer from coil to coil of mind-set therefrom, from coil to coil is installed one by one, finishes until last all unit assemblings.
Modular unit can form the spatial stability truss structure that there are triangle and hexagonal apertures in rear surface, a kind of front surface dense non-porous crack after assembling, this structure has the good rigidity of structure, and can improve the rigidity of structure of splicing aft antenna by the length of brace in the middle of designing, antenna structure has good designability.
The content that is not described in detail in the specification sheets of the present invention belongs to those skilled in the art's known technology.
Claims (3)
1. large space assembly type antenna reflector modular unit is characterized in that comprising hexagon expandable truss, reflection netting and connection rope device; Described hexagon expandable truss comprises crown hinge chain, synchronous dynamic hinge, hoop bar, middle brace; Two hoop bars that length is identical are formed synchronous folding rod by the synchronous dynamic hinge, a synchronous folding rod and two middle braces connect to form a plane triangle structural unit by three crown hinge chains, 12 plane triangle structural units interconnect by brace in the middle of shared and crown hinge chain, form a ring-type and promptly form antenna reflector modular unit truss, the synchronous folding rod of adjacent two triangular structure unit spatially staggers mutually during connection, spatially form two-layerly vary in size, hexagon that vertex position is staggered; Reflection netting comprises that metal gauze that reflection electromagnetic wave uses and the adjustment rope of adjusting metal net form face, metal gauze are sewn to be adjusted on the rope, adjusts rope and is connected, fixes by the connection rope device that is installed in the crown hinge chain with above-mentioned modular unit truss.
2. large space assembly type antenna reflector modular unit according to claim 1, it is characterized in that: described crown hinge chain comprises rocker bar bearing (11), two-dimentional swivel (12), synchronous folding rod joint (13), middle brace joint (14), auxiliary power spring (15), by rocker bar bearing (11) the crown hinge chain is divided into synchronizing bar layer and brace layer; The upper surface of the synchronizing bar layer of rocker bar bearing (11) is a V-type, and the V-type angle is consistent with modular unit hexagon angle, and the brace layer segment of rocker bar bearing (11) is positioned at the V-type lower surface of synchronizing bar layer; Four two-dimentional swivels (12) are installed in the both sides of V-type two ends, brace layer segment respectively by bearing; Folding rod joint (13) one ends are connected with the two-dimentional swivel (12) of synchronizing bar layer by axle synchronously, form cavity between the two; Middle brace joint (14) one ends are connected with the two-dimentional swivel (12) of brace layer by axle, form cavity between the two; Auxiliary power spring (15) is installed in the above-mentioned cavity and passes the interior axle of cavity.
3. large space assembly type antenna reflector modular unit assemble method is characterized in that step is as follows:
The first step, concrete configuration according to antenna reflector to be designed, the concrete dimensional structure of diverse location place modular unit in the designing antenna parasite, make that the front surface of assembling aft antenna parasite is the curved surface truss in the dense non-porous crack of hexagon formation, the rear surface is the mixed uniformly curved surface truss of hexagon and triangle, interlayer is middle brace structure, and per three meet at the middle brace of same point and the triangle formation space tetrahedral structure of rear surface; Above-mentioned modular unit is the described large space assembly type of claim 1 an antenna reflector modular unit;
In second step, according to modular unit residing position in antenna reflector, with the crown hinge chain on each modular unit and each modular unit numbering, give in any crown hinge chain numbering the adjacent block unit has identical element;
The 3rd step, the modular unit at fixed antenna parasite center, by from the center outward the principle of from coil to coil according to each modular unit of numbering assembling.
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