CN116424572A - Lightweight fan-shaped unfolding mechanism and spacecraft - Google Patents

Lightweight fan-shaped unfolding mechanism and spacecraft Download PDF

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Publication number
CN116424572A
CN116424572A CN202310503511.4A CN202310503511A CN116424572A CN 116424572 A CN116424572 A CN 116424572A CN 202310503511 A CN202310503511 A CN 202310503511A CN 116424572 A CN116424572 A CN 116424572A
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CN
China
Prior art keywords
connecting handle
handle
lightweight
unfolding
shape memory
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310503511.4A
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Chinese (zh)
Inventor
陈禹丞
张亚辉
张博
孟超
谷小军
王骏
郗佳浩
朱继宏
张卫红
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Publication date
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Priority to CN202310503511.4A priority Critical patent/CN116424572A/en
Publication of CN116424572A publication Critical patent/CN116424572A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/42—Arrangements or adaptations of power supply systems
    • B64G1/44—Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
    • B64G1/443—Photovoltaic cell arrays
    • 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
    • H01Q1/10—Telescopic elements
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

The application discloses a lightweight fan-shaped unfolding mechanism and spacecraft relates to the technical field of spacecrafts. The lightweight fan-shaped unfolding mechanism comprises a first connecting handle, a second connecting handle, an unfolding shaft, a shape memory alloy wire, a connecting plate and a framework; the tail end of the first connecting handle is connected with the tail end of the second connecting handle through an unfolding shaft, the shape memory alloy wire extends from the head end of the first connecting handle to the head end of the second connecting handle, two ends of the shape memory alloy wire are fixedly connected with the first connecting handle and the second connecting handle, and the shape memory alloy wire is positioned below the unfolding shaft; the plurality of outwards-radiating frameworks are all rotationally connected to the unfolding shaft; connecting plates are arranged between two adjacent skeletons, between the first connecting handle and the skeleton closest to the first connecting handle, and between the second connecting handle and the skeleton closest to the second connecting handle. The solar sailboard unfolding structure solves the technical problems that a solar sailboard of a spacecraft in the prior art is complex in unfolding structure and is easy to damage and cannot be unfolded.

Description

Lightweight fan-shaped unfolding mechanism and spacecraft
Technical Field
The application relates to the technical field of spacecrafts, in particular to a lightweight fan-shaped unfolding mechanism and a spacecraft.
Background
The unfolding mechanism of the spacecraft is in a folded state in the launching process and is fixedly placed in the payload cabin; after the launching is completed and the launching reaches the designated position, the unfolding mechanism can be automatically controlled by a ground control center or a spacecraft to be unfolded according to the requirement, and the unfolding mechanism is locked and works normally after the preset form is reached.
Solar panels are devices that convert the light energy of the sun into electrical energy. Almost all spacecraft use solar energy as a main energy source, and in order for the spacecraft to work for a long time, a solar cell sailboard must be unfolded.
Existing solar array deployment mechanisms are typically rotary joints or hinge mechanisms that require motor drive. On one hand, the unfolding and locking part of the solar sailboard has large volume, large mass and complex structure, increases the weight of the system and the use space requirement, and wastes resources and space; on the other hand, the solar sailboard unfolding mechanism is difficult to assemble and is easy to electromagnetic interference. When the solar sailboard is unfolded in space, the solar sailboard cannot be unfolded due to the fact that the unfolding structure of the solar sailboard is complex and damage can occur.
Disclosure of Invention
According to the lightweight fan-shaped unfolding mechanism and the spacecraft, the technical problems that in the prior art, a solar sailboard of the spacecraft is complicated in unfolding structure and is easy to damage and cannot be unfolded are solved.
In a first aspect, embodiments of the present application provide a lightweight fanning mechanism including a first connection handle, a second connection handle, a deployment shaft, a shape memory alloy wire, a connection plate, and a skeleton; the tail end of the first connecting handle is connected with the tail end of the second connecting handle through the unfolding shaft, the shape memory alloy wire extends from the head end of the first connecting handle to the head end of the second connecting handle, two ends of the shape memory alloy wire are fixedly connected with the first connecting handle and the second connecting handle, and the shape memory alloy wire is positioned below the unfolding shaft; the skeletons radiating outwards are all rotationally connected with the unfolding shaft; and the connecting plates are arranged between two adjacent skeletons, and the connecting plates are arranged between the first connecting handle and the skeleton closest to the first connecting handle, and between the second connecting handle and the skeleton closest to the second connecting handle.
In one possible implementation, the lightweight fanning mechanism further includes a plurality of supports; the support parts are correspondingly arranged at the ends, far away from the unfolding shafts, of the frameworks, and each support part at least exceeds one side of the framework in the direction perpendicular to the framework.
In one possible implementation, the lightweight fanning mechanism further includes a first docking plate and a second docking plate; the two first butt joint plates are arranged at the tail end of the first connecting handle at intervals along the length direction perpendicular to the first connecting handle, and the two second butt joint plates are arranged at the tail end of the second connecting handle at intervals along the length direction perpendicular to the second connecting handle; the two second butt joint plates are arranged between the two first butt joint plates and are connected with the two first butt joint plates through the unfolding shaft.
In one possible implementation, the deployment shaft includes a connection portion, and a plurality of connection shafts vertically connected to the connection portion; the skeletons radiating outwards are respectively and correspondingly connected with the connecting shafts in a one-to-one mode, and two ends of one connecting shaft are respectively connected with the first butt joint plate and the second butt joint plate.
In one possible implementation manner, the two clamping pieces of the lightweight fan-shaped unfolding mechanism are respectively arranged at the head end of the first connecting handle and the head end of the second connecting handle, and the clamping pieces fix the shape memory alloy wires.
In one possible implementation, the lightweight fanning mechanism further includes a stop; the limiting pieces are arranged at intervals along the length direction of the first connecting handle and the second connecting handle respectively.
In one possible implementation, the middle of each connecting plate is provided with a folding line along the radial direction.
In one possible implementation, the connection board is a solar panel or an antenna.
In a second aspect, an embodiment of the present invention provides a spacecraft, including the lightweight fanning mechanism according to the first aspect or any one of the possible implementation manners of the first aspect.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
the embodiment of the application provides a fan-shaped expansion mechanism of lightweight, including first connective handle, second connective handle, expansion axle, shape memory alloy silk, connecting plate and skeleton. In practical application, the first connecting handle and the second connecting handle are in a complete folding state of 0 degrees, and the shape memory alloy wire is heated and contracted after being electrified and heated to drive the first connecting handle and the second connecting handle to rotate around the unfolding shaft, so that the framework and the connecting plate are pushed to unfold and form a fan-shaped structure until the framework and the connecting plate are converted into the complete unfolding state. The embodiment of the application adopts a shape memory alloy wire with lighter weight to replace the existing heavy and complex structure. Therefore, the lightweight fan-shaped unfolding mechanism of the embodiment of the application is small in occupied space, simple in structure, small in quality, stable, controllable, safe and reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a lightweight fanning mechanism according to an embodiment of the present disclosure when deployed;
fig. 2 is a schematic structural diagram of a lightweight fan-shaped unfolding mechanism provided in an embodiment of the present application when folded;
fig. 3 is a schematic structural diagram of a multi-coupling according to an embodiment of the present application.
Reference numerals: 1-a first connection handle; 2-a second connection handle; 3-unfolding shaft; 31-connecting shaft; 311-first axis; 312-second axis; 313-third axis; 32-a connection; 4-a clamping piece; 41-a first wire pressing block; 42-a second wire pressing block; 43-limiting piece; 5-connecting plates; 51-fold lines; 6-shape memory alloy wire; 7-a framework; 71-a support; 8-fixing pieces; 9-a first butt plate; 10-a second butt plate.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
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", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships 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 to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present application. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through media. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiments of the present application provide a lightweight fanning mechanism, as shown in fig. 1-3. Fig. 1 is a schematic structural diagram of a light-weighted fanning mechanism provided in an embodiment of the present application when the light-weighted fanning mechanism is unfolded, fig. 2 is a schematic structural diagram of the light-weighted fanning mechanism provided in an embodiment of the present application when the light-weighted fanning mechanism is folded, and fig. 3 is a schematic structural diagram of a multi-coupling provided in an embodiment of the present application.
As shown in fig. 1 and 2, the lightweight fanning mechanism provided in the embodiment of the present application includes a first connection handle 1, a second connection handle 2, a deployment shaft 3, a shape memory alloy wire 6, a connection plate 5, and a skeleton 7. The tail end of the first connecting handle 1 is connected with the tail end of the second connecting handle 2 through the unfolding shaft 3, the shape memory alloy wire 6 extends from the head end of the first connecting handle 1 to the head end of the second connecting handle 2, two ends of the shape memory alloy wire 6 are fixedly connected with the first connecting handle 1 and the second connecting handle 2, and the shape memory alloy wire 6 is located below the unfolding shaft 3.
The first connecting handle 1 and the second connecting handle 2 can relatively rotate, can be converted from a fully folded state with 0 degree to a fully unfolded state, and can be in angles of 180 degrees, 200 degrees and the like when being fully unfolded, and the unfolding angle is determined by specific design parameters. When the included angle between the first connecting handle 1 and the second connecting handle 2 is 0 degree, the head end of the first connecting handle 1 is close to the head end of the second connecting handle 2; when the first connecting handle 1 and the second connecting handle 2 are in the fully unfolded state, the head end of the first connecting handle 1 is far away from the head end of the second connecting handle 2.
As shown in fig. 1, the shape memory alloy wire 6 spans over the first connecting handle 1 and the second connecting handle 2, the head end of the first connecting handle 1 extends to the head end of the second connecting handle 2, and two ends of the shape memory alloy wire are respectively fixed on the first connecting handle 1 and the second connecting handle 2, and the fixing forms can be various, such as a clamping piece 4 is provided, or a mounting column is provided for winding and other fixing structures. When the light fan-shaped unfolding mechanism is in practical application, the first connecting handle 1 and the second connecting handle 2 are in a 0-degree complete folding state, and the shape memory alloy wire 6 is electrified, heated and contracted to drive the first connecting handle 1 and the second connecting handle 2 to rotate relatively until the first connecting handle and the second connecting handle are converted into the complete unfolding state, and then the first connecting handle and the second connecting handle are powered off and cooled so as to complete the unfolding action.
A plurality of outwardly radiating bobbins 7 are each rotatably connected to the deployment shaft 3. A connecting plate 5 is arranged between two adjacent skeletons 7, between the first connecting handle 1 and the skeleton 7 nearest to the first connecting handle 1, and between the second connecting handle 2 and the skeleton 7 nearest to the second connecting handle 2. The framework 7 and the connecting plate 5 are arranged between the first connecting handle 1 and the second connecting handle 2, and when the shape memory alloy wire 6 is electrified and heated to shrink to drive the first connecting handle 1 and the second connecting handle 2 to rotate relatively, the framework 7 and the connecting plate 5 are driven to rotate simultaneously.
Specifically, the shape memory alloy wire 6 is heated and contracted after being electrified and heated, so that the first connecting handle 1 and the second connecting handle 2 are driven to rotate around the unfolding shaft 3, and the framework 7 and the connecting plate 5 are driven to unfold and form a fan-shaped structure until the fully unfolded state is converted. The present embodiment replaces the existing heavy and complex structure with a lighter weight shape memory alloy wire 6. Therefore, the lightweight fan-shaped unfolding mechanism of the embodiment of the application is small in occupied space, simple in structure, small in quality, stable, controllable, safe and reliable.
As shown in fig. 2, the lightweight fanning mechanism further includes a plurality of support portions 71. The supporting parts 71 are correspondingly arranged at the end parts of the frameworks 7 far away from the unfolding shaft 3, and each supporting part 71 at least exceeds one side of the frameworks 7 in the direction perpendicular to the frameworks 7. The supporting part 71 of this application embodiment makes this fan-shaped expansion mechanism of lightweight between two skeletons 7 when folding, between the skeleton 7 of first connecting handle 1 and being closest to first connecting handle 1 to and form the cavity between the skeleton 7 of second connecting handle 2 and being closest to second connecting handle 2, can prevent that connecting plate 5 from being extruded, avoid connecting plate 5 to take place to damage when fan-shaped expansion mechanism of lightweight folds. Therefore, the lightweight fan-shaped unfolding mechanism of the embodiment of the application is simple in structure, safe and reliable.
In one implementation of the present embodiment, the first connection handle 1 and the connection plate 5 closest to the first connection handle 1 and the second connection handle 2 and the connection plate 5 closest to the second connection handle 2 are connected by the fixing member 8.
With continued reference to fig. 1, the lightweight fanning mechanism further includes a first abutment plate 9 and a second abutment plate 10. Two first butt plates 9 are arranged at intervals along the length direction perpendicular to the first connecting handle 1 at the tail end of the first connecting handle 1, and two second butt plates 10 are arranged at intervals along the length direction perpendicular to the second connecting handle 2 at the tail end of the second connecting handle 2. The two second butt plates 10 are disposed between the two first butt plates 9 and connected with the two first butt plates 9 through the deployment shaft 3. The first and second abutment plates 9, 10 provide installation space for the deployment shaft 3, so that the lightweight fan-shaped deployment mechanism is more structurally stable when deployed.
As shown in fig. 1 and 3, the deployment shaft 3 includes a connection portion 32, and a plurality of connection shafts 31 vertically connected to the connection portion 32. The plurality of outwards-radiating skeletons 7 are respectively and rotatably connected with the plurality of connecting shafts 31 in a one-to-one correspondence manner, wherein two ends of one connecting shaft 31 are respectively connected with the first butt joint plate 9 and the second butt joint plate 10. Each framework 7 is respectively connected with the corresponding connecting shaft 31 in a rotating way, so that the first connecting handle 1, the connecting plate 5, the frameworks 7 and the second connecting handle 2 can keep a certain distance when being unfolded, and the device is safe and reliable.
The number of the skeletons 7 in the embodiment of the present application is three, and the number of the corresponding connecting shafts 31 is also three, and the three connecting shafts 31 are respectively a first shaft 311, a second shaft 312 and a third shaft 313. The first shaft 311 and the third shaft 313 are respectively located at both sides of the second shaft 312, both ends of the second shaft 312 are respectively connected to the first and second interfacing plates 9 and 10, and the second shaft 312 has a length greater than that of the first shaft 311 and the third shaft 313.
Of course, the three connecting shafts 31 are not limited, and if the number of the skeletons 7 of the lightweight fan-shaped developing mechanism is four, the number of the corresponding connecting shafts 31 is also four. The structural design can furthest utilize the space, so that the light fan-shaped unfolding mechanism is more stable in structure when being unfolded.
Illustratively, as shown in fig. 1 and 2, the lightweight fanning mechanism further includes a catch 4. The clamping piece 4 is respectively arranged at the head end of the first connecting handle 1 and the head end of the second connecting handle 2, and the clamping piece 4 is used for fixing the shape memory alloy wire 6. In this embodiment, the clamping members 4 are arranged in two groups, one group is close to the head end of the first connecting handle 1, and the other group is close to the head end of the second connecting handle 2.
Specifically, the chucking member 4 includes a first presser piece 41 and a second presser piece 42 which are stacked. The wire groove is arranged on the pressing surface of the first wire pressing block 41 and the second wire pressing block 42. Specifically, the wire groove is a semicircular groove, so that when the first wire pressing block 41 and the second wire pressing block 42 are in butt joint and pressing, a circular wire groove can be formed, and the circular wire groove can clamp the shape memory alloy wire 6, so that the shape memory alloy wire 6 can be effectively prevented from being locally damaged due to stress concentration of the clamping part, and the reliability of work is improved. Specifically, the first wire pressing block 41 and the second wire pressing block 42 are made of high-hardness metal materials, and have very good rigidity and are not easy to deform. Further, the slot wall of the slot can be provided with anti-skid lines to improve the stability when the shape memory alloy wire 6 is clamped.
In one implementation of the present embodiment, the lightweight fanning mechanism further includes a stop 43. The plurality of stoppers 43 are provided at intervals along the longitudinal direction of the first and second connection handles 1 and 2, respectively. The shape memory alloy wire 6 passes through the limiting piece 43, and a certain space is arranged in the limiting piece 43, so that the shape memory alloy wire 6 can move in the limiting piece 43, and the expansion effect of the lightweight fan-shaped expansion mechanism is affected due to the fact that the movement range of the shape memory alloy wire 6 is too large when the shape memory alloy wire is heated and contracted.
In one implementation of the embodiment of the present application, the middle of each connecting plate 5 is provided with a fold line 51 in the radial direction. The embodiment of the application sets up folding line 51 and is convenient for connecting plate 5 folding, saves space, is convenient for accomodate.
Further, the connection board 5 is a solar sailboard or an antenna. The lightweight fan-shaped unfolding mechanism is mainly applied to a solar sailboard or antenna unfolding mechanism of a spacecraft. Of course, in addition to these, the lightweight fanning mechanism may be similarly applied to other components or other devices of a spacecraft, and is not limited herein. The existing solar sailboards are powered by torsion springs mounted at the hinges of the sailboards. The device mainly ensures that the device can be unfolded synchronously with the side sailboard. In addition, the device also needs a damping device and a self-locking mechanism. Therefore, the solar sailboard with the existing structure has the advantages of complex mechanical structure, large volume, increased overall weight and use space, resource and space waste, and high assembly difficulty, and is easy to influence by the environment during working. However, the shape memory alloy wire 6 of the embodiment of the present application is light in weight, and the shape memory alloy wire 6 replaces the heavy and complicated structure in the prior art, so that the light-weight fanning mechanism is light in overall weight, simple in structure, easy to install, and not easy to damage.
In addition, the embodiment of the application also provides a spacecraft, and the spacecraft comprises the light-weight fan-out mechanism.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.

Claims (9)

1. The light fan-shaped unfolding mechanism is characterized by comprising a first connecting handle (1), a second connecting handle (2), an unfolding shaft (3), a shape memory alloy wire (6), a connecting plate (5) and a framework (7);
the tail end of the first connecting handle (1) is connected with the tail end of the second connecting handle (2) through the unfolding shaft (3), the shape memory alloy wire (6) extends from the head end of the first connecting handle (1) to the head end of the second connecting handle (2), two ends of the shape memory alloy wire (6) are fixedly connected with the first connecting handle (1) and the second connecting handle (2), and the shape memory alloy wire (6) is positioned below the unfolding shaft (3);
the skeletons (7) radiating outwards are all rotationally connected with the unfolding shaft (3);
between two adjacent skeletons (7), all be provided with between first connective handle (1) and the skeleton (7) that are closest to first connective handle (1), and between second connective handle (2) and skeleton (7) that are closest to second connective handle (2) connecting plate (5).
2. The lightweight fanning mechanism of claim 1, further comprising a plurality of support portions (71);
the support parts (71) are correspondingly arranged at the ends of the frameworks (7) far away from the unfolding shaft (3), and each support part (71) at least exceeds one side of the frameworks (7) in the direction perpendicular to the frameworks (7).
3. The lightweight fanning mechanism according to claim 1, further comprising a first abutment plate (9) and a second abutment plate (10);
the two first butt joint plates (9) are arranged at intervals along the length direction perpendicular to the first connecting handle (1) at the tail end of the first connecting handle (1), and the two second butt joint plates (10) are arranged at intervals along the length direction perpendicular to the second connecting handle (2) at the tail end of the second connecting handle (2);
the two second butt joint plates (10) are arranged between the two first butt joint plates (9) and are connected with the two first butt joint plates (9) through the unfolding shaft (3).
4. A lightweight fanning mechanism according to claim 3, wherein the deployment shaft (3) includes a connection portion (32), and a plurality of connection shafts (31) connected perpendicularly to the connection portion (32);
the skeletons (7) radiating outwards are respectively and correspondingly connected with the connecting shafts (31) in a one-to-one rotary mode, and two ends of one connecting shaft (31) are respectively connected with the first butt joint plate (9) and the second butt joint plate (10).
5. The lightweight fanning mechanism according to claim 1, further comprising two catches (4);
the two clamping pieces (4) are respectively arranged at the head end of the first connecting handle (1) and the head end of the second connecting handle (2), and the shape memory alloy wires (6) are fixed by the clamping pieces (4).
6. The lightweight fanning mechanism of claim 5, further comprising a stop (43);
the limiting pieces (43) are arranged at intervals along the length direction of the first connecting handle (1) and the second connecting handle (2).
7. A lightweight fan-out mechanism according to claim 1, characterized in that the middle of each of the connection plates (5) is provided with a fold line (51) in the radial direction.
8. The lightweight fanning mechanism of claim 1, the connection plate (5) being a solar panel or an antenna.
9. A spacecraft comprising a lightweight fanning mechanism as claimed in any one of claims 1 to 8.
CN202310503511.4A 2023-05-06 2023-05-06 Lightweight fan-shaped unfolding mechanism and spacecraft Pending CN116424572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310503511.4A CN116424572A (en) 2023-05-06 2023-05-06 Lightweight fan-shaped unfolding mechanism and spacecraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310503511.4A CN116424572A (en) 2023-05-06 2023-05-06 Lightweight fan-shaped unfolding mechanism and spacecraft

Publications (1)

Publication Number Publication Date
CN116424572A true CN116424572A (en) 2023-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310503511.4A Pending CN116424572A (en) 2023-05-06 2023-05-06 Lightweight fan-shaped unfolding mechanism and spacecraft

Country Status (1)

Country Link
CN (1) CN116424572A (en)

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