CN115764238A - Rib type deployable antenna device - Google Patents

Abstract

The invention provides a rib type deployable antenna device, which relates to the field of satellite-borne deployable antennas and comprises a truss assembly and a reflecting surface layer arranged on the truss assembly, wherein the truss assembly comprises a plurality of truss folding and unfolding units which are sequentially connected, the truss assembly is used for changing an unfolding state into a folding state and synchronously driving the reflecting surface layer to change the unfolding state into the folding state from the unfolding state, when the truss assembly is in the unfolding state, the truss folding and unfolding units are in a parallelogram posture, and when the truss assembly is in a folding state, the truss folding and unfolding units are in a linear posture. The antenna device can be folded into a linear posture, the envelope size in the fairing during emission can be effectively reduced, the reflecting surface layer can reach the area maximization after the antenna device is unfolded, the folding and unfolding ratio of the antenna device is greatly improved, the lamella made of the shape memory polymer composite material can be heated and folded and unfolded, and the antenna device has the advantages of being simple in structure, high in reliability, stable in unfolding process, almost free of vibration impact and the like.

Description

Rib type deployable antenna device

Technical Field

The invention relates to the field of satellite-borne deployable antennas, in particular to a rib type deployable antenna device.

Background

The reflector antenna is the most used antenna type on various application satellites, and can be used as a communication satellite antenna in ultrahigh frequency, microwave and millimeter wave bands to form shaped area beams, spot beams, multi-beam and scanning beams. The reflecting surface can be divided into 4 categories according to the structural form: a rigid reflector antenna, an inflated reflector antenna, a mesh reflector antenna, and a film reflector antenna.

The existing scheme has the following defects: 1. the rigid reflecting surface antenna has high precision, but has heavy structure and low storage rate; 2. the inflatable deployable antenna has high storage rate and large caliber but the surface shape precision is difficult to be made very high; 3. the film reflector antenna and the mesh reflector antenna have excellent performance but complicated structures.

Disclosure of Invention

The invention solves the problems that: how to improve the folding-spreading ratio, reliability and stability of the antenna device during unfolding.

In order to solve the above problems, the present invention provides a rib type deployable antenna apparatus, including a truss assembly and a reflective surface layer disposed on the truss assembly, wherein the truss assembly includes a plurality of truss folding and unfolding units connected in sequence, the truss assembly is configured to change from an unfolded state to a folded state and synchronously drive the reflective surface layer to change from a spread state to a folded state, when the truss assembly is in the unfolded state, the truss folding and unfolding units are in a parallelogram posture, and when the truss assembly is in the folded state, the truss folding and unfolding units are in a linear posture;

the truss folding and unfolding unit comprises a hinge unfolding unit made of shape memory polymer composite materials, and the hinge unfolding unit is used for being heated to drive the truss assembly to be unfolded or folded;

a heating assembly for heating the hinge extension unit.

Optionally, the truss folding and unfolding unit comprises a side rib, a middle rib and two hinge extension units, and when the truss folding and unfolding unit is in a parallelogram posture, the side rib and the middle rib are parallel to each other, and the two hinge extension units are parallel to each other; when the truss folding and unfolding units are in a linear posture, the side ribs are in contact with the middle rib and are parallel to each other, and the two hinge unfolding units are accommodated between the side ribs and the middle rib;

or the truss folding and unfolding unit comprises two middle ribs and two hinge unfolding units; when the truss folding and unfolding units are in a parallelogram posture, the two middle ribs are parallel to each other, and the two hinge unfolding units are parallel to each other; when the truss folding and unfolding unit is in a linear posture, two middle ribs are in contact with each other and are parallel to each other, and the hinge extending unit is accommodated between the side ribs and the middle ribs.

Optionally, every the hinge unit of stretching includes two extension poles and two lamellas, two the one end of extension pole rotate respectively connect in the avris rib with perhaps rotate on the middle part rib and connect in adjacent on the middle part rib, two the other end of extension pole is through two the lamella links together.

Optionally, the sheet layer is made of a shape memory polymer composite material, and the heating assembly is used for heating the sheet layer so as to deform the sheet layer and drive the two corresponding stretching rods to unfold or fold.

Optionally, the extension rod comprises a follower rod, two ends of the follower rod are respectively provided with a hinge block and a connecting block, the hinge block is used for being rotatably connected with the side rib or the middle rib, and the connecting block is used for being fixedly connected with the sheet layer.

Optionally, the lamella is the U type, just the lamella includes outer panel and interior lateral plate, the outer panel include first deformation portion and set up in the first installation department at first deformation portion both ends, interior lateral plate include the second deformation portion and set up in the second installation department at second deformation portion both ends, the lamella is used for being changed into gradually by crooked gesture into straightening gesture after being heated.

Optionally, the avris rib includes first horizontal plane portion and perpendicular to first vertical face portion of first horizontal plane portion, first horizontal plane portion with first vertical face portion constitutes the parabolic structure, be equipped with a plurality of first connecting pieces on the avris rib, first connecting piece is including locating first supporting seat on the avris rib, first supporting seat be used for with articulated piece rotates to be connected, and is in both sides be equipped with the first end separation blade on the first supporting seat, be in the middle part be equipped with first separation blade on the first supporting seat, just the first end separation blade with first separation blade all is fixed connection and is in first supporting seat keeps away from the side at avris rib center.

Optionally, the middle part rib includes the vertical face portion of second and perpendicular to the second horizontal plane portion at the vertical face portion middle part of second, second horizontal plane portion with the vertical face portion of second constitutes the parabola type structure, be equipped with a plurality of second connecting pieces on the middle part rib, the second connecting piece is including locating second supporting seat on the middle part rib, the second supporting seat be used for with articulated piece rotates to be connected, and is in both sides be equipped with second end separation blade on the second supporting seat, be in the middle part be equipped with the second separation blade on the second supporting seat, just the second end separation blade with the second separation blade all is fixed connection and is in the second supporting seat is kept away from a side at middle part rib center.

Optionally, the reflecting surface layer includes flexible metal mesh, just reflecting surface layer fixed connection the avris rib with the middle part rib, just the reflecting surface layer with the avris rib middle part rib line contact.

Optionally, the heating assembly includes a heating film, the heating film is adhered to the surface of the first deformation portion and the surface of the second deformation portion through a high temperature resistant polyimide double-sided tape or a high temperature resistant acrylic double-sided tape, and/or the heating film is directly cured in a composite manner inside the first deformation portion and inside the second deformation portion.

Compared with the prior art, the invention has the following beneficial effects:

the truss assembly can be applied to a satellite-borne satellite, the truss folding and unfolding units can be folded into a linear posture, and after the reflecting surface layer is completely folded, the hinge unfolding units can not additionally occupy storage space and can be completely accommodated, the folding and unfolding ratio of the antenna device can not be influenced, the envelope size in the fairing during emission can be effectively reduced, and the area of the reflecting surface layer can be maximized after the truss assembly is unfolded, so that the folding and unfolding ratio of the antenna device is greatly improved; the hinge stretching unit made of the shape memory polymer composite material is driven by the heating assembly to fold and stretch, and the hinge stretching unit has the advantages of simple structure, high reliability, stable stretching process, almost no vibration impact and the like.

Drawings

Fig. 1 is a schematic structural view of a rib-type deployable antenna apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the truss assembly of an embodiment of the present invention after deployment;

FIG. 3 is a schematic structural view of another expanded view of a truss assembly according to an embodiment of the invention;

FIG. 4 is a schematic view of a collapsed configuration of the truss assembly in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of another collapsed view of the truss assembly of an embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

FIG. 7 is a schematic view of a side rib according to an embodiment of the present invention;

FIG. 8 is a structural schematic view of a center rib according to an embodiment of the present invention;

FIG. 9 is a schematic view of a structure of a side rib and a middle rib of an embodiment of the present invention in an abutting state;

FIG. 10 is a schematic structural view of a hinge extension unit according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a stretcher bar according to an embodiment of the present invention;

FIG. 12 is a schematic view of the construction of an outer panel according to an embodiment of the present invention;

FIG. 13 is a schematic view of the construction of an inner side panel according to an embodiment of the present invention;

fig. 14 is a schematic structural view of the outer sheet or the inner sheet in a straightened posture according to the embodiment of the present invention.

Description of reference numerals:

1. a truss assembly; 11. a truss folding and unfolding unit; 111. a side rib; 1111. a first horizontal plane section; 1112. a first vertical face portion; 1113. a first connecting member; 11131. a first support base; 11132. a first baffle plate; 1114. a first end stop; 112. a middle rib; 1121. a second vertical face portion; 1122. a second horizontal plane section; 1123. a second end stop; 1124. a second connecting member; 11241. a second baffle plate; 11242. a second support seat; 113. a hinge extension unit; 1131. a stretching rod; 11311. a follower rod; 11312. a hinged block; 11313. connecting blocks; 1132. a sheet layer; 11321. an outer sheet; 113211, a first deformation portion; 113212, a first mounting portion; 11322. an inner side panel; 113221, a second deformation portion; 113222, a second mounting portion; 2. a reflective surface layer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

The Z-axis in the drawings indicates a vertical direction, i.e., an up-down position, and a forward direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents an upward direction and a reverse direction of the Z-axis represents a downward direction; the X-axis in the drawing represents the horizontal direction and is designated as the left-right position, and the forward direction of the X-axis represents the left side and the reverse direction of the X-axis represents the right side; the Y-axis in the drawings is represented as a front-rear position, and a forward direction of the Y-axis represents a front side and a reverse direction of the Y-axis represents a rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Referring to fig. 1 to 5, an embodiment of the present invention provides a rib type deployable antenna apparatus (hereinafter referred to as an antenna apparatus), including a truss assembly 1 and a reflective surface layer 2 disposed on the truss assembly 1, where the truss assembly 1 includes a plurality of truss folding units 11 connected in sequence, the truss assembly 1 is configured to change from an unfolded state to a folded state and synchronously drive the reflective surface layer 2 to change from the unfolded state to the folded state, when the truss assembly 1 is in the unfolded state, the truss folding units 11 are in a parallelogram posture, and when the truss assembly 1 is in the folded state, the truss folding units 11 are in a linear posture;

the truss folding and unfolding unit 11 comprises a hinge stretching unit 113, the hinge stretching unit 113 is made of shape memory polymer composite material, and the hinge stretching unit 113 is used for being heated to drive the truss assembly 1 to unfold or fold;

a heating member for heating the hinge extension unit 113.

Thus, when the truss folding and unfolding unit 11 is in a parallelogram posture, the truss assembly 1 is unfolded and spreads the reflecting surface layer 2; when the truss folding and unfolding units 11 are in linear postures, the truss assemblies 1 fold and fold the reflecting surface layer 2, and the truss folding and unfolding units 11 can fold into linear postures, so that only a small storage space is needed, the envelope size in the fairing during emission can be effectively reduced, and the reflecting surface layer can reach the area maximization after the plurality of truss folding and unfolding units 11 are unfolded at the same time, so that the folding and unfolding ratio of the antenna device is greatly improved.

Specifically, the plurality of truss folding and unfolding units 11 are connected in series, that is, the adjacent truss folding and unfolding units 11 are arranged side by side end to end, so that the purpose of arrangement is that the plurality of truss folding and unfolding units 11 can synchronously perform the transformation from the unfolding posture to the folding posture or from the folding posture to the unfolding posture, and thus the reflecting surface layer 2 can be quickly unfolded or folded; in one embodiment, a plurality of truss folding units 11 may be arranged in series on one side of the truss assembly 1, which can save a certain amount of truss folding units 11, and achieve the purposes of saving materials and reducing production cost, but may affect the stability of the side of the truss assembly 1 without the truss folding units 11 during unfolding and folding and the structural strength after unfolding and folding, so that the side cannot complete the unfolding and folding actions synchronously with the side provided with the truss folding units 11, and if the side truss folding units 11 are damaged, the whole truss assembly 1 may be affected to be unable to be unfolded or folded, thereby easily causing the failure of the unfolding or folding actions of the reflective surface layer 2.

In this embodiment, a plurality of truss folding and unfolding units 11 can be arranged in parallel on two sides of the truss assembly 1, and a plurality of truss folding and unfolding units 11 on the same side of the truss assembly 1 are connected in series, so as to ensure that two sides of the truss assembly 1 can synchronously change the unfolding posture to the folding posture or change the folding posture to the unfolding posture, ensure the stability of the two sides of the truss assembly 1 during unfolding and folding and the structural strength after unfolding and folding, and further ensure that the structural layout of the whole truss assembly 1 is more reasonable, and the structural strength is also improved.

Alternatively, as shown in fig. 1 to 3, the truss folding and unfolding unit 11 includes a side rib 111, a middle rib 112, and two hinge extension units 113, wherein when the truss folding and unfolding unit 11 is in a parallelogram posture, the side rib 111 and the middle rib 112 are parallel to each other, and the two hinge extension units 113 are parallel to each other; when the truss folding and unfolding unit 11 is in a linear posture, the side ribs 111 and the middle rib 112 are in contact and parallel to each other, and the two hinge extending units 113 are accommodated between the side ribs 111 and the middle rib 112;

or the truss folding and unfolding unit 11 includes two middle ribs 112 and two hinge unfolding units 113; when the truss folding and unfolding unit 11 is in a parallelogram posture, the two middle ribs 112 are parallel to each other, and the two hinge unfolding units 113 are parallel to each other; when the truss folding and unfolding unit 11 is in the linear posture, the two middle ribs 112 are in contact with each other and parallel to each other, and the two hinge unfolding units 113 are received between the side ribs 111 and the middle ribs 112.

Specifically, as shown in fig. 2 to fig. 3, the truss folding and unfolding units 11 at the upper and lower sides are enclosed by the side ribs 111, the middle rib 112 and the two hinge extension units 113, and the truss folding and unfolding unit 11 at the middle part is enclosed by the middle ribs 112 and the two hinge extension units 113, that is, when the distance between the side rib 111 and the adjacent middle rib 112 and between the adjacent middle ribs 112 is the largest, the truss folding and unfolding unit 11 is in a rectangular posture, so that the truss assembly 1 is in a fully unfolded state, and the unfolded area of the reflective surface layer 2 is the largest at this time; when the side ribs 111 abut against the adjacent middle ribs 112 and the adjacent middle ribs 112, the truss assembly 1 is in a completely folded state, the reflective surface layer 2 is completely folded, when all the side ribs 111 and the middle ribs 112 are folded together, all the hinge extension units 113 are accommodated between the side ribs 111 and the adjacent middle ribs 112 and between the adjacent middle ribs 112, so that the hinge extension units 113 function as a framework in the truss assembly 1 after the reflective surface layer 2 is completely unfolded, and after the reflective surface layer 2 is completely folded, the hinge extension units 113 do not occupy additional storage space, can be completely accommodated, and do not affect the folding ratio of the antenna device.

Alternatively, as shown in fig. 1 to 6, each hinge extension unit 113 includes two extension bars 1131 and two sheets 1132, one end of each of the two extension bars 1131 is rotatably connected to the side rib 111 and the middle rib 112 or the adjacent middle rib 112, and the other end of each of the two extension bars 1131 is connected together through the two sheets 1132.

Specifically, the distribution position of the hinge extension unit 113 may be changed and set at different positions to obtain different folding manners, or the size may be increased in the radial direction or the longitudinal direction or corresponding components may be added, and the longitudinal size of the antenna apparatus may be extended by increasing the number of the extension rods 1131 in the hinge extension unit 113; different folding and unfolding ratios can be obtained by increasing the radial length of the antenna device by increasing the lengths of the side ribs 111 and the middle rib 112, or by increasing or decreasing the number of the hinge extension units 113 without changing the size.

Optionally, as shown in fig. 10-14, the sheets 1132 are made of a shape memory polymer composite material, and the heating element is configured to heat the sheets 1132, so that the sheets 1132 are deformed and the corresponding two extension bars 1131 are driven to unfold or fold.

In this embodiment, the material selection for the sheet layer 1132 of the shape memory polymer composite material may be diversified, the shape memory polymer composite material includes a matrix phase and a reinforcing phase, the matrix phase refers to a polymer material, and is selected according to the requirements of the use environment, generally, an epoxy or cyanate type shape memory polymer composite material can be selected, and the glass transition temperature of the epoxy type polymer material can be obtained by modification within the range of 80-180 ℃; the glass transition temperature of the cyanate ester polymer can be obtained by modification within the range of 180-200 ℃; the reinforcing phase is preferably continuous fibers, such as carbon fibers, glass fibers, aramid fibers, polyethylene fibers and the like with good mechanical properties, or chopped fibers or reinforcing particles, and the sheet layer 1132 made of the shape memory polymer composite material is driven to fold and unfold by a heating assembly, so that the composite material has the advantages of simple structure, high reliability, stable unfolding process, almost no vibration impact and the like.

Alternatively, as shown in fig. 10 to 11, the stretching bar 1131 includes a follower bar 11311, the two ends of the follower bar 11311 are respectively provided with a hinge block 11312 and a connection block 11313, the hinge block 11312 is used for rotatably connecting with the side rib 111 or the middle rib 112, and the connection block 11313 is used for fixedly connecting with the sheet layer 1132.

Specifically, articulated piece 11312 and connecting block 11313 can adopt to weld in the extension bar 1131 both ends, also can be by extension bar 1131's both ends integrated into one piece, and connecting block 11313 can be the curved surface cambered surface structure of uplift for both sides face about can the shaping, and such design can increase the area of contact of lamella 1132 with connecting block 11313, improves fastness and the stability after both connect.

Optionally, as shown in fig. 12-14, the sheet layer 1132 is U-shaped, and the sheet layer 1132 includes an outer sheet 11321 and an inner sheet 11322, the outer sheet 11321 includes a first deforming portion 113211 and first mounting portions 113212 disposed at two ends of the first deforming portion 113211, the inner sheet 11322 includes a second deforming portion 113221 and second mounting portions 113222 disposed at two ends of the second deforming portion 113221, and the sheet layer 1132 is heated to gradually change from the bending posture to the straightening posture.

Specifically, the sheets 1132 can be directly formed by integrally laying fibers and curing, the first mounting portion 113212 of the outer sheet 11321 and the second mounting portion 113222 of the inner sheet 11322 are formed into shapes matched with the connecting block 11313 of the extension bar 1131, holes can be pre-punched and connected through bolts, the sheets 1132 are heated by a heating assembly, and when the temperature exceeds the glass transition temperature Tg of the sheets, the sheets 1132 are in a folded state, such as a U-shaped state, the sheets 1132 are kept in the folded state after the temperature is reduced, and the bending of the sheets 1132 realizes folding of devices at two ends; when the spacecraft enters the space and moves to the preset orbit, the heating assembly heats the sheet layer 1132 again, and after the temperature exceeds the glass transition temperature Tg of the spacecraft, the sheet layer 1132 is unfolded to drive the corresponding extension rod 1131 to be unfolded, so that the whole truss assembly 1 is unfolded.

Optionally, as shown in fig. 7, the side rib 111 includes a first horizontal surface portion 1111 and a first vertical surface portion 1112 perpendicular to the first horizontal surface portion 1111, the first horizontal surface portion 1111 and the first vertical surface portion 1112 form a parabolic structure, a plurality of first connecting members 1113 are disposed on the side rib 111, the first connecting members 1113 include a first supporting seat 11131 disposed on the side rib 111, the first supporting seat 11131 is configured to be rotatably connected with a hinge block 11312, and first end portions 1114 are disposed on the first supporting seat 11131 at both sides, a first blocking piece 11132 is disposed on the first supporting seat 11131 at the middle portion, and the first end portion 1114 and the first blocking piece 11132 are both a side surface fixedly connected to the first supporting seat 11131 and far away from the center of the side rib 111.

In this embodiment, it is able to realize tapping on the first support base 11131 and the hinge block 11312, the first support base 11131 and the hinge block 11312 are rotatably mounted by a rotating member such as a rotating shaft and a pin shaft at the back, and thanks to the arrangement of the first end portion baffle 1114 and the first baffle 11132, the rotating direction of the guiding rod 1131 can be limited, and the side rib 111 of the L-shaped parabolic structure and the middle rib 112 of the T-shaped parabolic structure can form a space for accommodating the hinge extension unit 113 after being folded, so that the hinge extension unit 113 faces the inside after the truss assembly 1 is folded, thereby not occupying an extra storage space, and the first end portion baffle 1114 and the first baffle 11132 can also play a role similar to a reinforcing rib, and can ensure the structural strength of the side rib 111.

Optionally, referring to fig. 8, the middle rib 112 includes a second vertical surface portion 1121 and a second horizontal surface portion 1122 perpendicular to the middle of the second vertical surface portion 1121, the second horizontal surface portion 1122 and the second vertical surface portion 1121 form a parabolic structure, the middle rib 112 is provided with a plurality of second connecting members 1124, each second connecting member 1124 includes a second supporting seat 11242 disposed on the middle rib 112, each second supporting seat 11242 is configured to be rotatably connected to the hinge block 11312, the second supporting seats 11242 on both sides are provided with second end blocking pieces 1123, the second supporting seat 11242 in the middle is provided with a second blocking piece 11241, and the second end blocking pieces 1123 and the second blocking pieces 11241 are both fixedly connected to a side surface of the second supporting seat 11242 away from the center of the middle rib 112.

In this embodiment, on the basis of the above embodiment, the cross-sectional shape of the side rib 111 may be an L shape, and the cross-sectional shape of the middle rib 112 may be a T shape, so that a space for accommodating the hinge extension unit 113 is more easily formed between the side rib 111 and the middle rib 112 or between adjacent middle ribs 112, the cross-sectional shapes of the side rib 111 and the middle rib 112 are not limited to the above shapes, and the cross-sectional shapes of the side rib 111, the middle rib 112, and the extension bar 1131, such as an i-beam, a C-beam, or a circular hollow bar, may be changed as long as the cross-sectional shapes can conveniently accommodate the hinge extension unit 113, and hollow holes may be formed in the side rib 111, the middle rib 112, and the extension bar 1131, so as to reduce the volume and mass of the antenna device by changing the structure and size, thereby achieving the characteristics of simple structure and light weight.

Specifically, holes may be formed in the second support seat 11242 and the hinge block 11312 in advance, and then the second support seat 11242 and the hinge block 11312 are rotatably assembled by a rotating member such as a rotating shaft and a pin shaft, so as to benefit from the arrangement of the second end stopper 1123 and the second stopper 11241, the effect similar to a reinforcing rib can also be achieved, the structural strength of the middle rib 112 can be ensured, and the rotating direction of the extension bar 1131 can also be limited, when the truss assembly 1 is folded, the extension bar 1131 can only rotate in the direction of the center of the truss assembly 1, and then the side rib 111 and the middle rib 112 can be gradually folded, and when the truss assembly 1 is unfolded, the extension bar 1131 rotates to the maximum angle and is then blocked by the second end stopper 1123 and the second stopper 11241, and at this time, the truss assembly 1 happens to be in the fully unfolded state, and the middle ribs 112 of the two T-shaped parabolic structures can form a space for accommodating the truss extension unit 113 after being folded, so that the hinge extension unit 113 faces the inside after being folded, and thus does not occupy additional storage space.

Alternatively, as shown in fig. 1 to 3, the reflecting surface layer 2 includes a flexible metal mesh and fixedly connects the side ribs 111 and the middle rib 112, and is in line contact with the reflecting surface layer 2 and the side ribs 111 and the middle rib 112.

Specifically, the reflective surface layer 2 is in line contact with the first vertical surface portion 1112 of the side rib 111 and the second vertical surface portion 1121 of the middle rib 112, and the hinge extension unit 113 is located on the other surface of the reflective surface layer 2, so that the design can effectively avoid movement interference during folding and unfolding and stress concentration during curling of the reflective surface layer 2, and facilitate adjustment and maintenance of the surface precision of the reflective surface layer 2.

In this embodiment, reflecting surface layer 2 is flexible metal mesh, thereby can with avris rib 111, the fine matching of middle part rib 112, so that antenna device can be with the stable in shape, the form of high rigidity is at space work operation, and reflecting surface layer 2's structural style can be parabolic, plane or cylinder, avris rib 111 and middle part rib 112 that select to correspond according to the structural style of difference, thereby can choose for use in a flexible way according to the practical application scene, and reflecting surface layer 2's material can change, and design different folding mode and crease, when satisfying antenna device and expandes, reflecting surface layer 2's wire side is levelly and smoothly spread out, when antenna device draws in, reflecting surface layer 2's wire side fifty percent discount naturally.

Optionally, as shown in fig. 10 to 14, the heating assembly includes a heating film, the heating film is adhered to the surface of the first deforming portion 113211 and the surface of the second deforming portion 113221 by a high temperature resistant polyimide double-sided adhesive tape or a high temperature resistant acrylic double-sided adhesive tape, and/or the heating film is directly cured in a composite manner inside the first deforming portion 113211 and inside the second deforming portion 113221.

Specifically, the heating assembly may heat the sheet layer 1132 in one or more combinations of an external heating film, an embedded resistance wire, an external conductive adhesive, sunlight, ultraviolet light, a magnetic field, or microwave, wherein the heating assembly may be disposed outside the sheet layer 1132 or inside the sheet layer 1132; in this embodiment, heating element adopts the mode of electrical heating to heat lamella 1132, and the mode of pasting is pasted for using high temperature resistant polyimide double faced adhesive tape or high temperature resistant acrylic acid double faced adhesive tape, has improved the fastness of connection of heating film with lamella 1132, can not cause the coming off of heating film because of the rising of temperature.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The rib type deployable antenna device is characterized by comprising a truss assembly (1) and a reflecting surface layer (2) arranged on the truss assembly (1), wherein the truss assembly (1) comprises a plurality of truss folding and unfolding units (11) which are sequentially connected, the truss assembly (1) is used for converting an unfolding state into a folding state and synchronously driving the reflecting surface layer (2) to convert the unfolding state into the folding state, when the truss assembly (1) is in the unfolding state, the truss folding and unfolding units (11) are in a parallelogram posture, and when the truss assembly (1) is in the folding state, the truss folding and unfolding units (11) are in a linear posture;

the truss folding and unfolding unit (11) comprises a hinge stretching unit (113), the hinge stretching unit (113) is made of a shape memory polymer composite material, and the hinge stretching unit (113) is used for being heated to drive the truss assembly (1) to unfold or fold;

a heating assembly for heating the hinge extension unit (113).

2. The rib-type deployable antenna apparatus according to claim 1, wherein the truss folding unit (11) includes a side rib (111), a middle rib (112), and two hinge extension units (113), the side rib (111) and the middle rib (112) being parallel to each other and the two hinge extension units (113) being parallel to each other when the truss folding unit (11) is in a parallelogram posture; when the truss folding and unfolding units (11) are in a linear posture, the side ribs (111) are in contact with the middle rib (112) and are parallel to each other, and the two hinge extending units (113) are accommodated between the side ribs (111) and the middle rib (112);

or the truss folding and unfolding unit (11) comprises two middle ribs (112) and two hinge unfolding units (113); when the truss folding and unfolding unit (11) is in a parallelogram posture, the two middle ribs (112) are parallel to each other, and the two hinge unfolding units (113) are parallel to each other; when truss folding and unfolding unit (11) is the line type gesture, two middle part rib (112) contact and be parallel to each other, two hinge extension unit (113) are accomodate in avris rib (111) with between middle part rib (112).

3. The ribbing deployable antenna apparatus according to claim 2, wherein each of the hinge extension units (113) includes two extension bars (1131) and two sheets (1132), one ends of the two extension bars (1131) are respectively and rotatably connected to the side rib (111) and the middle rib (112) or to the adjacent middle rib (112), and the other ends of the two extension bars (1131) are connected together through the two sheets (1132).

4. The ribbed deployable antenna assembly of claim 3, wherein the sheets (1132) are made of a shape memory polymer composite material, and the heating assembly is configured to heat the sheets (1132) to deform the sheets (1132) and cause the corresponding two of the extension bars (1131) to deploy or retract.

5. The ribbed deployable antenna assembly according to claim 3, wherein the extendable rod (1131) comprises a follower rod (11311), the two ends of the follower rod (11311) are respectively provided with a hinge block (11312) and a connection block (11313), the hinge block (11312) is used for being rotatably connected with the side rib (111) or the middle rib (112), and the connection block (11313) is used for being fixedly connected with the sheet (1132).

6. The ribbing deployable antenna device according to claim 4, wherein the sheets (1132) are U-shaped and the sheets (1132) comprise outer and inner sheets (11321, 11322), the outer sheet (11321) comprising a first deformed portion (113211) and first attachment portions (113212) disposed at both ends of the first deformed portion (113211), the inner sheet (11322) comprising a second deformed portion (113221) and second attachment portions (113222) disposed at both ends of the second deformed portion (113221), the sheets (1132) for gradually transforming from a bent attitude to a straightened attitude upon heating.

7. The ribbing deployable antenna device according to claim 5, wherein the side rib (111) includes first water plane portion (1111) and perpendicular to first vertical face portion (1112) of first water plane portion (1111), first water plane portion (1111) with first vertical face portion (1112) constitutes parabolic structure, be equipped with a plurality of first connecting piece (1113) on side rib (111), first connecting piece (1113) is including locating first supporting seat (11131) on side rib (111), first supporting seat (11131) be used for with articulated piece (11312) is rotated and is connected, and is in both sides be equipped with first end separation blade (1114) on first supporting seat (11131), be in the middle be equipped with first separation blade (11132) on first supporting seat (11131), just first separation blade (1114) with first separation blade (11132) all is fixed connection in first supporting seat (11131) keep away from the side at the center of first supporting seat (11131).

8. The ribbing deployable antenna apparatus according to claim 5, wherein the middle rib (112) comprises a second vertical surface portion (1121) and a second horizontal surface portion (1122) perpendicular to the middle of the second vertical surface portion (1121), the second horizontal surface portion (1122) and the second vertical surface portion (1121) form a parabolic structure, a plurality of second connecting members (1124) are arranged on the middle rib (112), each second connecting member (1124) comprises a second support seat (11242) arranged on the middle rib (112), the second support seats (11242) are used for being rotatably connected with the hinge block (11312), second end stoppers (1123) are arranged on the second support seats (11242) at two sides, a second stopper piece (11241) is arranged on the second support seat (11242) at the middle portion, and the second end stoppers (3) and the second stopper piece (11241) are fixedly connected to a side surface of the second support seat (11242) away from the center of the middle rib (112).

9. The ribbing deployable antenna apparatus according to claim 5, wherein the reflective surface layer (2) comprises a flexible metal mesh, and the reflective surface layer (2) fixedly connects the side ribs (111) and the middle rib (112), and the reflective surface layer (2) is in line contact with the side ribs (111) and the middle rib (112).

10. The ribbing deployable antenna apparatus according to claim 6, wherein the heating assembly comprises a heating film adhered to the surfaces of the first deformation portion (113211) and the second deformation portion (113221) by a high temperature resistant polyimide double-sided adhesive tape or a high temperature resistant acrylic double-sided adhesive tape, and/or adhered to the heating film and fixed inside the first deformation portion (113211) and the second deformation portion (113221), and/or directly compounded and solidified inside the first deformation portion (113211) and the second deformation portion (113221).

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