CN116505224A - Expandable winding rib, antenna and aerospace device - Google Patents

Expandable winding rib, antenna and aerospace device Download PDF

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Publication number
CN116505224A
CN116505224A CN202310782456.7A CN202310782456A CN116505224A CN 116505224 A CN116505224 A CN 116505224A CN 202310782456 A CN202310782456 A CN 202310782456A CN 116505224 A CN116505224 A CN 116505224A
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CN
China
Prior art keywords
winding
locking
elastic
antenna
winding rib
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Granted
Application number
CN202310782456.7A
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Chinese (zh)
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CN116505224B (en
Inventor
孔垂慈
刁凤超
高成志
刘远松
孙吉利
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Qilu Aerospace Information Research Institute
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Qilu Aerospace Information Research Institute
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Priority to CN202310782456.7A priority Critical patent/CN116505224B/en
Publication of CN116505224A publication Critical patent/CN116505224A/en
Application granted granted Critical
Publication of CN116505224B publication Critical patent/CN116505224B/en
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Classifications

    • 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
    • H01Q1/085—Flexible aerials; Whip aerials with a resilient base
    • H01Q1/087—Extensible roll- up aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/20—Resilient mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

The invention provides an expandable winding rib, an antenna and space equipment, which belong to the field of antennas, wherein the bottom of an elastic sheet is connected with the bottom of an adjacent elastic sheet and is used for rotating around the adjacent elastic sheet, so that all the elastic sheets are integrally at the same horizontal height, and the winding rib is folded conveniently; the winding rib locking assembly is arranged at the top of the adjacent elastic sheet and used for locking the adjacent elastic sheet; the elastic element is arranged at the top of each elastic sheet and is used for being in a tensioning state when the winding ribs are in a furled state; in the process of expanding the winding ribs, the elastic element drives the top of the elastic sheet to move by elastic force, so that the winding rib locking assembly locks the adjacent elastic sheet; after all the elastic sheets are locked, the winding ribs are in an unfolding state and are parabolic. According to the invention, when the winding ribs are folded, all the elastic sheets are positioned at the same horizontal height, so that the folding size of the winding ribs in the longitudinal direction is reduced, the folding volume of the antenna is reduced, and the storage ratio is improved.

Description

Expandable winding rib, antenna and aerospace device
Technical Field
The invention relates to the field of antennas, in particular to an expandable winding rib, an antenna and aerospace equipment.
Background
The winding rib expandable antenna has the advantages of high storage ratio, light structure weight, high expansion reliability, simple mechanism design and the like. However, in order to ensure that the plurality of winding ribs can form a parabola in the unfolded state, the single winding rib is generally parabolic in the longitudinal direction, so that the folded size of the winding rib is not reduced in the longitudinal direction after the winding rib is folded, and the folded volume of the whole antenna is larger and the storage ratio is lower.
Disclosure of Invention
The invention provides an expandable winding rib, an antenna and aerospace equipment, which are used for solving the defects that in the prior art, a single winding rib is generally parabolic in the longitudinal direction, so that the folding size of the winding rib is not reduced in the longitudinal direction after the winding rib is folded, and the folding size of the whole antenna is larger and the storage ratio is lower.
The invention provides an expandable winding rib, which comprises a plurality of elastic sheets, an elastic element and a plurality of winding rib locking assemblies:
the bottoms of the elastic sheets are connected with the bottoms of the adjacent elastic sheets and are used for rotating around the adjacent elastic sheets, so that all the elastic sheets are integrally at the same horizontal height, and the winding ribs are folded;
the winding rib locking assembly is arranged at the top of the adjacent elastic sheet and used for locking the adjacent elastic sheet;
the elastic element is arranged at the top of each elastic sheet and is used for being in a tensioning state when the winding ribs are in a furled state; in the process of expanding the winding ribs, the elastic element drives the top of the elastic sheet to move by elastic force, so that the winding rib locking assembly locks the adjacent elastic sheet; after all the elastic sheets are locked, the winding ribs are in an unfolding state and are parabolic.
According to the present invention there is provided an expandable winding rib, the winding rib locking assembly comprising:
the locking buckle is arranged at one side of the top of the elastic piece;
the locking head is arranged on the other side of the top of the elastic sheet, and the locking buckle and the locking head are matched and locked with the adjacent elastic sheet.
According to the present invention, there is provided an expandable winding rib, the winding rib further comprising:
the rotating shaft is arranged at the bottom of the elastic sheet, so that the elastic sheet is connected with the bottom of the adjacent elastic sheet, and the elastic sheet rotates around the rotating shaft in the process of expanding the winding ribs.
The present invention also provides an antenna composed of an expandable winding rib, comprising:
a mounting base;
the telescopic feed source is arranged at the center of the mounting base;
the locking assembly is respectively connected with the mounting base, the winding rib and the telescopic feed source and is used for fixing the winding rib and the telescopic feed source on the mounting base.
According to the present invention, there is provided an antenna, the locking assembly comprising:
the first locking rope is arranged on the winding rib, so that the winding rib is fixed on the side surface of the mounting base when the winding rib is kept in a folded state;
one end of the second locking rope is arranged on the telescopic feed source, and the other end of the second locking rope is fixed on the mounting base and is used for fixing the telescopic feed source at the center of the mounting base when the telescopic feed source is kept in a contracted state;
the limiting devices are arranged on the mounting base, distributed around the telescopic feed source and used for limiting the telescopic feed source; the first locking rope is matched with the second locking rope, so that the antenna is in a folded state.
According to the present invention, there is provided an antenna further comprising:
and one end of the winding rib is fixed on the mounting base, the other end of the winding rib is provided with an opening, and the locking ring passes through each opening to fix the winding rib in an unfolding state.
According to the invention, an antenna is provided, the telescopic feed source comprises:
a feed source component;
the support sleeve is connected with the feed source assembly, a slide way is arranged on the outer side of the support sleeve and connected with a slide groove on the installation base, the support sleeve drives the feed source assembly to slide relative to the installation base, and when the antenna is in a furling state, a preset part of the feed source assembly is furled into the satellite star;
and the compression elastic piece is sleeved outside the supporting sleeve, one end of the compression elastic piece is in contact with the mounting base, the other end of the compression elastic piece is in contact with the feed source assembly, when the antenna is in a folded state, the compression elastic piece is in a compressed state, and the compression elastic piece is further used for driving the telescopic feed source to move along a direction away from the satellite star by elastic force so that the antenna is converted into an unfolded state.
According to the antenna provided by the invention, the outer side of the supporting sleeve is provided with the heat dissipation coating.
According to the invention, there is provided an antenna further comprising a release assembly, the release assembly comprising:
a first release member provided on the mounting base in contact with the first locking rope for releasing the winding rib;
the second release element is arranged on the mounting base, is contacted with the second locking rope and is used for releasing the telescopic feed source, and the first release element and the second release element are matched to enable the antenna to be converted into an unfolding state from a furling state.
The invention also provides aerospace equipment comprising the antenna.
According to the expandable winding rib, the antenna and the aerospace equipment, the winding rib is formed by the plurality of elastic sheets, so that all the elastic sheets are at the same horizontal height when the winding rib is folded, the folding size of the winding rib in the longitudinal direction is reduced, the folding volume of the antenna is reduced, and the storage ratio is improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a longitudinal drawing in a drawn state of a winding rib provided by the present invention;
FIG. 2 is a schematic view of a longitudinally expanded structure of a winding rib provided in the present invention in an expanded state;
FIG. 3 is a schematic view of the winding rib locking assembly of FIG. 1 in an unlocked condition provided by the present invention;
FIG. 4 is a schematic view of the winding rib locking assembly of FIG. 2 in a locked condition in accordance with the present invention;
fig. 5 is a schematic structural diagram of an antenna in a folded state;
fig. 6 is a schematic structural view of an antenna provided by the present invention in an unfolded state;
FIG. 7 is a schematic view of the mounting base of FIGS. 5 and 6 according to the present invention;
FIG. 8 is a schematic view of the enlarged partial structure of FIG. 7 provided by the present invention;
FIG. 9 is a schematic view of the structure of the locking and release assembly of FIG. 6 provided by the present invention;
FIG. 10 is a schematic cross-sectional view of a mounting base and locking assembly provided by the present invention;
FIG. 11 is a schematic view of the spacing device of FIG. 10 according to the present invention;
FIG. 12 is a schematic diagram of the structure of a scalable feed provided by the present invention;
fig. 13 is a schematic structural view of the second stop collar and the first stop post of fig. 12 according to the present invention.
Reference numerals:
100-winding ribs, 110-elastic sheets, 120-elastic elements, 130-winding rib locking assemblies, 131-locking buckles and 132-locking heads;
200-mounting bases, 210-winding rib mounting interfaces, 220-telescopic feed source mounting interfaces, 230-star connection interfaces, 240-second locking rope mounting interfaces A, 250-sliding grooves and 260-first limiting rings;
300-telescopic feed source, 310-supporting sleeve, 311-slideway, 312-second limit ring, 313-first limit post, 320-active mounting plate, 321-second locking rope mounting interface B, 322-first auxiliary reverse support mounting interface, 330-TR component, 340-active mounting plate cover plate, 350-feed source, 360-auxiliary reflecting surface, 361-second auxiliary reverse support mounting interface and 370-auxiliary reverse support;
400-locking components, 410-first locking ropes, 420-second locking ropes, 430-limiting devices, 431-bases, 432-second compression springs and 433-telescopic heads;
500-locking ring;
600-release assembly, 610-first release element, 620-second release element;
700-satellite star, 800-compression elastic piece and 900-metal net surface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
FIG. 1 is a schematic view of a longitudinal drawing in a drawn state of a winding rib provided by the present invention; FIG. 2 is a schematic view of a longitudinally expanded structure of a winding rib provided in the present invention in an expanded state; as shown in fig. 1 and 2, the present invention provides an expandable winding rib, the winding rib 100 including a plurality of elastic pieces 110, an elastic member 120, and a plurality of winding rib locking assemblies 130:
the bottom of the elastic sheet 110 is connected to the bottom of the adjacent elastic sheet 110, and is configured to rotate around the adjacent elastic sheet 110, so that all the elastic sheets 110 are at the same level, so as to complete the folding of the winding rib 100; the plurality of elastic sheets 110 are spliced to constitute the winding rib 100.
The winding rib locking assembly 130 is disposed on top of the adjacent elastic sheet 110, and is used for locking the adjacent elastic sheet 110;
the elastic members 120 are provided on the top of each of the elastic pieces 110, and are used for being in a tensioned state when the winding ribs 100 are in a folded state; during the process of unwinding the winding rib 100, the elastic element 120 drives the top of the elastic sheet 110 to move by elastic force, so that the winding rib locking assembly 130 locks the adjacent elastic sheet 110; after all the elastic pieces 110 are locked, the winding rib 100 is in an unfolded state and has a parabolic shape.
Alternatively, the elastic element 120 is a spring or an elastic rope, etc., and may be configured in other elastic structures, which is not limited in this application.
Alternatively, the elastic sheet 110 is a thin sheet having a small thickness.
It can be understood that the winding rib 100 is formed by the plurality of elastic sheets 110, so that all the elastic sheets 110 are at the same horizontal height when the winding rib 100 is folded, the folding size of the winding rib 100 in the longitudinal direction is reduced, the folding volume of the antenna is reduced, and the storage ratio is improved.
Fig. 3 is a schematic structural view of the winding rib locking assembly of fig. 1 in an unlocked state, and fig. 4 is a schematic structural view of the winding rib locking assembly of fig. 2 in a locked state, as shown in fig. 3 and 4, according to the present invention, the winding rib locking assembly 130 includes, as an alternative embodiment based on the above embodiment:
a locking buckle 131 disposed at one side of the top of the elastic sheet 110;
the locking head 132 is disposed on the other side of the top of the elastic sheet 110, and the locking buckle 131 and the locking head 132 are matched to lock the adjacent elastic sheets 110.
It is understood that the present invention can improve the stability of the winding rib 100 in the unfolded state by providing the locking buckle 131 and the locking head 132 on the elastic sheet 110.
On the basis of the above embodiment, as an alternative embodiment, the winding rib 100 further includes:
the rotating shaft is disposed at the bottom of the elastic sheet 110, so that the elastic sheet 110 is connected with the bottom of the adjacent elastic sheet 110, and during the process of expanding the winding rib 100, the elastic sheet 110 rotates anticlockwise around the rotating shaft, so that the winding rib 100 is overall parabolic after being expanded.
Specifically, the expandable winding rib 100 provided by the invention is an elastic strip-shaped thin plate, not only can be folded transversely, but also can be folded longitudinally, the folding can be realized transversely by directly relying on the elasticity of the material of the expandable winding rib, each elastic piece 110 in the longitudinal direction can rotate around the bottom rotating shaft, at the moment, the elastic element 120 at the top is elongated, and each elastic piece 110 is approximately arranged in a straight line and is bent to realize the longitudinal folding; after unlocking and releasing, each elastic sheet 110 reversely rotates around the bottom rotating shaft under the action of the elastic force of the top elastic element 120, the tops of the adjacent elastic sheets 110 are mutually close, after the adjacent elastic sheets are mutually contacted, locking buckles 131 and locking heads 132 respectively arranged at the tops of the two adjacent elastic sheets 110 are interlocked, locking of the tops of the adjacent elastic sheets 110 is realized, and then the winding ribs 100 are unfolded in the longitudinal direction and are parabolic. The sheet is formed by stretching directly by self elasticity in the transverse direction, and the plurality of stretching and winding ribs 100 are stretched to form a skeleton of the reflecting surface.
The antenna comprising the expandable winding rib provided by the invention is described below, and the antenna described below and the expandable winding rib described above can be referred to correspondingly.
Fig. 5 is a schematic structural view of an antenna provided by the present invention in a folded state, and fig. 6 is a schematic structural view of an antenna provided by the present invention in an unfolded state, as shown in fig. 5 and 6, the present invention also provides an antenna composed of an expandable winding rib, including:
a mounting base 200;
a telescopic feed source 300 provided at the center of the installation base 200;
and a locking assembly 400 respectively connected with the mounting base 200, the winding rib 100 and the telescopic feed 300, and fixing the winding rib 100 and the telescopic feed 300 to the mounting base 200.
Fig. 7 is a schematic structural view of the mounting base in fig. 5 and 6 provided by the present invention, and fig. 8 is a schematic partial enlarged structural view of fig. 7 provided by the present invention; as shown in fig. 7 and 8, the antenna may optionally include a plurality of expandable winding ribs, and the main body of the mounting base 200 has a regular polyhedron structure, and the number of sides of the polygon corresponds to the number of the expandable winding ribs 100; the mounting base 200 is provided with a winding rib mounting interface 210, a telescopic feed source mounting interface 220, a star connection interface 230, a second locking rope mounting interface A240, a sliding chute 250 and a first limiting ring 260. The winding rib mounting interfaces 210 are distributed on the regular polyhedron side of the mounting base 200 for mounting and fixing the winding rib 100; the telescopic feed source installation interface 220 is positioned at the center of the bottom surface of the installation base 200 and is a circular opening for installing the telescopic feed source 300; the star connection interfaces 230 are circumferentially distributed on the bottom surface of the mounting base 200 and are used for connecting with the satellite star 700; the second locking rope installation interfaces A240 are circumferentially distributed on the bottom surface of the installation base 200 and are used for connecting second locking ropes 420; the sliding grooves 250 are uniformly distributed on the circumference of the telescopic feed source installation interface 220 and are used for limiting the telescopic direction of the telescopic feed source 300; the first limiting ring 260 is in an inverted cone shape, and is located on top of the telescopic feed source mounting interface 220, and is used for limiting the extending length of the telescopic feed source 300.
Alternatively, after all the winding ribs 100 are unfolded, a metal mesh surface 900 may be disposed on the winding ribs 100, where the metal mesh surface 900 should be a metal reflection surface dedicated to a spacecraft, and a nickel-plated stainless steel mesh surface, a gold-plated molybdenum mesh surface, or a special fabric mesh surface may be selected. The metal mesh 900 is laid on the winding rib 100, and the metal mesh 900 may be sewn on the winding rib 100 by kevlar threads.
It can be understood that the antenna provided by the invention comprises the winding rib 100, when the antenna is in the folded state, the folded size of the winding rib 100 in the longitudinal direction can be reduced, the folded volume of the antenna is reduced, and the storage ratio is improved.
Fig. 9 is a schematic structural view of the locking assembly and the releasing assembly of fig. 6, as shown in fig. 9, and the locking assembly 400 includes, as an alternative embodiment on the basis of the above embodiment:
a first locking rope 410 for being provided on the winding rib 100 so as to be fixed to a side surface of the installation base 200 when the winding rib 100 is maintained in a folded state;
a second locking rope 420 having one end provided on the telescopic feed source 300 and the other end fixed on the installation base 200, for fixing the telescopic feed source 300 at the center of the installation base 200 while maintaining a contracted state;
the limiting devices 430 are arranged on the mounting base 200 and distributed around the telescopic feed source 300, and are used for limiting the telescopic feed source 300 and limiting the position of the telescopic feed source after being unfolded; the first locking cord 410 and the second locking cord 420 cooperate such that the antenna is in a collapsed state.
The first locking rope 410 is used for winding and locking the winding rib 100 in the folded state, so that the winding rib 100 is fixed on the mounting base 200 in the folded state; the second locking rope 420 is fixed on the telescopic feed source 300 at one end and on the mounting base 200 at the other end when the telescopic feed source 300 is in a contracted state, and is used for maintaining the contracted state of the telescopic feed source 300.
Fig. 10 is a schematic cross-sectional structure of the mounting base and the locking assembly provided by the present invention, and fig. 11 is a schematic structural view of the limiting device provided by the present invention, as shown in fig. 10 and 11, the limiting device 430 includes: a base 431, a second compression spring 432, and a telescoping head 433; the base 431 is provided with a slide way 311, the second compression spring 432 is arranged along the slide way 311, and is connected with the base 431 and the telescopic head 433, and the telescopic head 433 can perform telescopic movement along the slide way 311 of the base 431 along the slide way 311.
It can be appreciated that the present invention provides an embodiment of the composition structure of the locking assembly 400, and the structure of the locking assembly 400 is simplified and the weight of the antenna is reduced by providing the locking rope.
On the basis of the foregoing embodiment, as an optional embodiment, the antenna provided by the present invention further includes:
a locking ring 500 having one end fixed to the mounting base 200 and the other end provided with openings, the locking ring 500 passing through each of the openings to fix the winding rib 100 in an unfolded state.
Specifically, the locking ring 500 has a hollow circular elastic structure, which is connected to the top of each winding rib 100, and prevents the winding rib 100 from shaking left and right after the winding rib 100 is unfolded.
It is understood that the present invention can improve the stability of the winding rib 100 by providing the locking ring 500.
Fig. 12 is a schematic structural view of a telescopic feed source provided by the present invention, and fig. 13 is a schematic structural view of a second limiting ring and a first limiting post in fig. 12 provided by the present invention, as shown in fig. 12 and fig. 13, on the basis of the foregoing embodiment, as an alternative embodiment, the telescopic feed source 300 includes:
a feed source component;
the support sleeve 310 is connected with the feed source assembly, a slideway 311 is arranged on the outer side of the support sleeve 310, the slideway 311 is connected with the chute 250 on the installation base 200, the support sleeve 310 drives the feed source assembly to slide relative to the installation base 200, and when the antenna is in a furling state, a preset part of the feed source assembly is furled inside the satellite star 700;
and a compression elastic member 800 sleeved outside the support sleeve 310, wherein one end of the compression elastic member is in contact with the mounting base 200, the other end of the compression elastic member is in contact with the feed source assembly, when the antenna is in a folded state, the compression elastic member 800 is in a compressed state, and the compression elastic member 800 is used for driving the telescopic feed source 300 to move along a direction away from the satellite star 700 by elastic force, so that the antenna is converted into an unfolded state.
Optionally, the feed assembly includes an active mounting board 320, a TR assembly 330, an active mounting board cover 340, a feed 350, a secondary reflecting surface 360, a secondary reflecting mount 370, and the like.
The supporting sleeve 310 is hollow and cylindrical, a slideway 311 is arranged along the bus direction of the outer surface of the cylinder, the slideway 311 can be in sliding connection with the chute 250 on the mounting base 200, the bottom of the outer surface of the cylinder is also provided with a second limiting ring 312, the second limiting ring 312 is in a shape of an upright cone, the lower part of the second limiting ring 312 is also provided with a first limiting column 313, and the first limiting columns are uniformly distributed at the bottom of the outer surface of the cylinder of the supporting sleeve 310; the active mounting plate 320 has a rectangular structure, and is fixed on the top of the support sleeve 310, and a plurality of TR module mounting positions (the number of which is identical to that of the required TR modules 330) are arranged on the upper bottom surface of the active mounting plate 320, so as to mount the TR modules 330; the side of the active mounting plate 320 is extended by 6 struts, and a first sub counter bracket mounting interface 322 is provided on the struts for fixing the sub counter bracket 370. Two opposite sides of the active mounting plate 320 are respectively extended by 1 pillar in the vertical side direction, and a second locking rope mounting interface B321 is arranged on the pillar for connecting with the second locking rope 420. The active mounting board cover 340 has a rectangular structure, and four support columns extend from the bottom surface of the active mounting board cover 340, for fixing the active mounting board cover 340 on the active mounting board 320. The feed source is fixed on the active mounting plate cover plate 340; the secondary reflecting surface 360 is located right above the feed source and keeps a certain distance from the feed source, the secondary reflecting surface 360 is in a parabolic shape, and a second secondary reflecting bracket mounting interface 361 is arranged on the top surface of the parabolic surface. The auxiliary counter brackets 370 are cylindrical structures, threaded interfaces are arranged on the upper bottom surface and the lower bottom surface, and are respectively connected with the auxiliary reflecting surface 360 and the active mounting plate 320, and two adjacent auxiliary counter brackets 370 are placed at a certain angle to form a stable triangular structure, so that the auxiliary reflecting surface 360 and the active mounting plate 320 are relatively fixed.
Alternatively, the compression spring 800 is a first compression spring. The first compression spring is in a spiral structure and sleeved outside the supporting sleeve 310 of the telescopic feed source 300, one end of the first compression spring is fixed on the mounting base 200, and the other end of the first compression spring is fixed on the active mounting plate 320 of the telescopic feed source 300.
It can be appreciated that the present invention provides a configuration scheme of the telescopic feed source 300, when the antenna is in a folded state, the winding rib 100 is wound on the side surface of the mounting base 200 under the action of the first locking rope 410, and the telescopic feed source 300 is mostly folded inside the satellite star 700 under the action of the second locking rope 420, so that the folded volume of the antenna can be further reduced, and the storage ratio can be improved.
On the basis of the above embodiment, as an alternative embodiment, the outer side of the support sleeve 310 is provided with a heat dissipation coating.
It can be appreciated that the present invention extends the life of the antenna by providing a heat dissipating layer on the outside of the support sleeve 310 to dissipate heat from the telescopic feed 300.
On the basis of the above embodiment, as an alternative embodiment, the antenna provided by the present invention further includes a release assembly 600, where the release assembly 600 includes:
a first release member 610 provided on the mounting base 200 to contact the first locking string 410 for releasing the winding rib 100;
a second release element 620, provided on the mounting base 200, in contact with the second locking cord 420, for releasing the telescopic feed 300, the first release element 610 and the second release element 620 cooperating to cause the antenna to switch from a folded state to an unfolded state.
The first release element 610 is a first round bar blade and the second release element 620 is a second round bar blade. The first round bar electric knife is in a ring shape, is arranged at the top of the side surface of the mounting base 200, is contacted with the first locking rope 410, and is used for cutting off the first locking rope 410, so as to unlock the winding rib 100 and change the winding rib from a furled state to an unfolded state; the second round bar electric knife is in a ring shape, is fixed on the bottom surface of the supporting base, contacts with the second locking rope 420, and is used for cutting off the second locking rope 420, so as to unlock the telescopic feed source 300, and moves in a direction away from the satellite star 700 under the action of the elastic force of the first compression spring, and finally keeps an extended state.
The working principle of the antenna provided by the invention is described in detail below.
When the antenna is in the folded state, the winding rib 100 is in the folded state, the telescopic feed 300 is in the contracted state, most of the telescopic feed is contracted in the satellite body 700, the first compression spring is in the compressed state, and the first locking rope 410 and the second locking rope 420 are in the tensioned state. When the antenna unfolding command is sent, the first circular pole electric knife and the second circular pole electric knife are electrified, the first locking rope 410 and the second locking rope 420 are cut off, at this time, the winding rib 100 and the first compression spring are released from constraint, and the free state is restored under the action of respective elastic forces. The winding rib 100 moves in the transverse direction under the action of self-elastic force, and is unfolded from the original coiled round state to a linear sheet state which is overlapped with one side of the regular polygon of the mounting base 200; on the other hand, under the action of the elastic force of each elastic element 120, each elastic sheet starts to rotate anticlockwise around the bottom rotation shaft, when the tops of the adjacent elastic sheets 110 are contacted, the locking heads 132 are inserted into the locking buckles 131 to realize locking, and after the tops of all the elastic sheets 110 are sequentially contacted and locked with each other, the winding ribs 100 are completely unfolded in the longitudinal direction and have a parabolic shape. The metal reflecting surface is locked on the winding rib 100, and forms a reflecting surface as the winding rib 100 is completely unfolded. The telescopic feed source 300 moves along the chute 250 on the mounting base 200 in a direction away from the star body under the action of the elasticity of the first compression spring, and after the telescopic feed source moves to a set position, on one hand, the first limiting ring 260 and the second limiting ring 312 are contacted to prevent the telescopic feed source 300 from continuing to move; on the other hand, the telescopic head 433 of the limiting device 430 is extended to contact with the first limiting post 313, so as to prevent the telescopic feed 300 from moving in the opposite direction, and thus the antenna is completely unfolded.
The invention also provides aerospace equipment comprising the antenna.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An expandable winding rib, wherein the winding rib comprises a plurality of elastic sheets, an elastic element and a plurality of winding rib locking assemblies:
the bottoms of the elastic sheets are connected with the bottoms of the adjacent elastic sheets and are used for rotating around the adjacent elastic sheets, so that all the elastic sheets are integrally at the same horizontal height, and the winding ribs are folded;
the winding rib locking assembly is arranged at the top of the adjacent elastic sheet and used for locking the adjacent elastic sheet;
the elastic element is arranged at the top of each elastic sheet and is used for being in a tensioning state when the winding ribs are in a furled state; in the process of expanding the winding ribs, the elastic element drives the top of the elastic sheet to move by elastic force, so that the winding rib locking assembly locks the adjacent elastic sheet; after all the elastic sheets are locked, the winding ribs are in an unfolding state and are parabolic.
2. The expandable winding rib of claim 1, wherein the winding rib locking assembly comprises:
the locking buckle is arranged at one side of the top of the elastic piece;
the locking head is arranged on the other side of the top of the elastic sheet, and the locking buckle and the locking head are matched and locked with the adjacent elastic sheet.
3. The expandable winding rib of claim 1, wherein the winding rib further comprises:
the rotating shaft is arranged at the bottom of the elastic sheet, so that the elastic sheet is connected with the bottom of the adjacent elastic sheet, and the elastic sheet rotates around the rotating shaft in the process of expanding the winding ribs.
4. An antenna formed from the unwindable winding rib of any of claims 1-3, comprising:
a mounting base;
the telescopic feed source is arranged at the center of the mounting base;
the locking assembly is respectively connected with the mounting base, the winding rib and the telescopic feed source and is used for fixing the winding rib and the telescopic feed source on the mounting base.
5. The antenna of claim 4, wherein the locking assembly comprises:
the first locking rope is arranged on the winding rib, so that the winding rib is fixed on the side surface of the mounting base when the winding rib is kept in a folded state;
one end of the second locking rope is arranged on the telescopic feed source, and the other end of the second locking rope is fixed on the mounting base and is used for fixing the telescopic feed source at the center of the mounting base when the telescopic feed source is kept in a contracted state;
the limiting devices are arranged on the mounting base, distributed around the telescopic feed source and used for limiting the telescopic feed source; the first locking rope is matched with the second locking rope, so that the antenna is in a folded state.
6. The antenna of claim 4, further comprising:
and one end of the winding rib is fixed on the mounting base, the other end of the winding rib is provided with an opening, and the locking ring passes through each opening to fix the winding rib in an unfolding state.
7. The antenna of claim 4, wherein the retractable feed comprises:
a feed source component;
the support sleeve is connected with the feed source assembly, a slide way is arranged on the outer side of the support sleeve and connected with a slide groove on the installation base, the support sleeve drives the feed source assembly to slide relative to the installation base, and when the antenna is in a furling state, a preset part of the feed source assembly is furled into the satellite star;
and the compression elastic piece is sleeved outside the supporting sleeve, one end of the compression elastic piece is in contact with the mounting base, the other end of the compression elastic piece is in contact with the feed source assembly, when the antenna is in a folded state, the compression elastic piece is in a compressed state, and the compression elastic piece is used for driving the telescopic feed source to move along a direction away from the satellite star by elastic force so that the antenna is converted into an unfolded state.
8. The antenna of claim 7, wherein a heat sink coating is provided on the outside of the support sleeve.
9. The antenna of claim 5, further comprising a release assembly, the release assembly comprising:
a first release member provided on the mounting base in contact with the first locking rope for releasing the winding rib;
the second release element is arranged on the mounting base, is contacted with the second locking rope and is used for releasing the telescopic feed source, and the first release element and the second release element are matched to enable the antenna to be converted into an unfolding state from a furling state.
10. A spacecraft comprising an antenna as claimed in any of claims 4-9.
CN202310782456.7A 2023-06-29 2023-06-29 Antenna and aerospace device composed of expandable winding ribs Active CN116505224B (en)

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CN114678677A (en) * 2022-03-21 2022-06-28 同济大学 Feed mechanism of winding rib type deployable antenna
CN115832669A (en) * 2022-11-29 2023-03-21 西安电子科技大学 Winding rib type electrostatic forming film reflecting surface antenna
CN116031606A (en) * 2022-11-24 2023-04-28 北京遥测技术研究所 Winding type accommodating high-precision flexible reflection surface antenna device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054228A1 (en) * 2000-01-18 2001-07-26 Medzmariashvili Elgudja V Expandable parabolic antenna
CN110313106A (en) * 2016-11-08 2019-10-08 牛津空间系统有限公司 Deployable winding rib component
CN107221755A (en) * 2017-04-22 2017-09-29 西安电子科技大学 It is a kind of from resilience reconfigurable satellite-borne deployable antenna
CN107293861A (en) * 2017-06-16 2017-10-24 哈尔滨工业大学 Based on the external winding rib Large Deployable reflecting surface of center deformation truss
CN108365348A (en) * 2018-02-02 2018-08-03 西安电子科技大学 A kind of soft rib deployable antenna device with active shape adjustment function
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CN110994118A (en) * 2019-11-18 2020-04-10 西安电子科技大学 Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism
CN114678677A (en) * 2022-03-21 2022-06-28 同济大学 Feed mechanism of winding rib type deployable antenna
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CN115832669A (en) * 2022-11-29 2023-03-21 西安电子科技大学 Winding rib type electrostatic forming film reflecting surface antenna

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