Book-shaped spaceborne planar antenna unfolding and supporting mechanism

Abstract

The invention discloses a book-shaped satellite-borne planar antenna unfolding and supporting mechanism which comprises a satellite platform, a middle antenna assembly is fixedly mounted at the top of the satellite platform through a mounting seat, a left wing supporting assembly is hinged to the left side of the middle antenna assembly through a first hinge driving assembly, and a left planar antenna is fixedly mounted in the left wing supporting assembly. And a right wing supporting assembly is hinged to the right side of the middle antenna assembly through a second hinge driving assembly. According to the book-configuration satellite-borne planar antenna unfolding and supporting mechanism, the unfolding fundamental frequency of a planar antenna array plane is improved by arranging the supporting frame, and the problem that the antenna unfolding fundamental frequency is too low due to the fact that a cantilever is too long when a book-configuration planar antenna is in an unfolding state is effectively solved; the thermal deformation of the antenna array plane during on-orbit operation can be inhibited, the imaging and detection precision of a satellite system is improved, the manufacturing cost and the overall weight are effectively reduced, and the feasibility is higher.

Description

Technical Field

[0001] The invention relates to the technical field of antenna support, and in particular to a book-shaped satellite-borne planar antenna deployment support mechanism. Background Art

[0002] With the development of satellite miniaturization, some satellites are often launched in a side-mounted manner. At this time, the antenna array surface is usually gathered to the middle and pressed against the top of the satellite cabin, and the antenna array surface presents a "book" configuration layout. For example, a folding and unfolding mechanism for a multi-board deployable antenna for a spacecraft described in Publication No. CN106207368A can realize the unfolding and support of a book-configured antenna sub-board, but its unfolded structure appears on one side of the antenna radiation surface, which has a significant shielding effect on antenna detection. At present, there is no effective solution for the unfolding support of the book-configured antenna sub-board. The solution is mainly to increase the cross-sectional thickness of the antenna sub-board to improve its own stiffness. However, this method will lead to a significant increase in the weight of the satellite system and a significant increase in cost. Therefore, a book-configured satellite-borne planar antenna unfolding and supporting mechanism is proposed to realize the unfolding support of the book-configured satellite-borne antenna and reduce the thermal deformation of the satellite SAR antenna array surface when working in orbit. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a support mechanism for unfolding a book-shaped satellite-borne planar antenna, which solves the problem of lack of an effective support structure for unfolding the book-shaped antenna array.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a book-shaped satellite-borne planar antenna deployment support mechanism, including a satellite platform, a central antenna assembly is fixedly installed on the top of the satellite platform through a mounting seat, the left side of the central antenna assembly is hinged with a left wing support assembly through a first hinge drive assembly, the left wing support assembly has a left planar antenna fixedly installed, the right side of the central antenna assembly is hinged with a right wing support assembly through a second hinge drive assembly, the right wing support assembly has a right planar antenna fixedly installed, and a crimping release assembly is also fixedly installed on the surface of the central antenna assembly, and the crimping release assembly is used in conjunction with the left wing support assembly and the right wing support assembly, respectively.

[0005] The present invention is further configured as follows: the central antenna assembly includes a central planar antenna, the front and rear sides of the central planar antenna are fixedly connected with a central antenna mounting plate, and the central antenna mounting plate is fixedly mounted on the top of the satellite platform through a mounting seat.

[0006] The present invention is further configured as follows: the left wing support assembly includes two left wing antenna mounting plates, the two left wing antenna mounting plates have opposite sides fixedly connected to a first support frame via a first support ear, and one side of the first support frame is fixedly connected to the top of the left wing antenna mounting plate via a first oblique support; The left-mounted planar antenna is fixedly installed between two left-wing antenna mounting plates.

[0007] The present invention is further configured as follows: the right wing support assembly includes two right wing antenna mounting plates, the two opposite sides of the two right wing antenna mounting plates are fixedly connected to a second support frame through a second support ear, and one side of the second support frame is fixedly connected to the top of the right wing antenna mounting plate through a second oblique support; The right-mounted planar antenna is fixedly installed between two right-wing antenna mounting plates; The opposite sides of the two second support frames are used in cooperation with the opposite sides of the two first support frames respectively.

[0008] The present invention is further configured as follows: the first hinge drive assembly and the second hinge drive assembly both include a driver bracket, and a driver is fixedly mounted on the surface of the driver bracket; The output end of the driver in the first articulated drive assembly is fixedly connected to one side of the first support frame, and the driver bracket is fixedly installed on one side of the central antenna mounting plate, and the two first support frames are respectively hinged to the left sides of the two central antenna mounting plates; The output end of the driver in the second articulated drive assembly is fixedly connected to one side of the second support frame, and the driver bracket is fixedly installed on the other side of the central antenna mounting plate, and the two second support frames are respectively hinged to the right sides of the two central antenna mounting plates.

[0009] The present invention is further configured as follows: the crimping release assembly includes a cutter, the cutter is fixedly mounted on the top of the center antenna mounting plate, a sleeve is passed through and fixedly mounted on the top of the left wing antenna mounting plate, a cone is passed through and fixedly mounted on the top of the right wing antenna mounting plate, and the cone, sleeve and cutter are used in combination.

[0010] The present invention provides a book-shaped satellite-borne planar antenna deployment support mechanism, which has the following beneficial effects: The present invention improves the unfolded fundamental frequency of the planar antenna array by providing a supporting frame, effectively solving the problem of too low unfolded fundamental frequency of the book-shaped planar antenna caused by too long cantilever in the unfolded state, which is beneficial to suppressing thermal deformation of the antenna array when working in orbit, improving the imaging and detection accuracy of the satellite system, and effectively reducing the manufacturing cost and overall weight, making it more feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the external structure of the present invention in a folded state; Figure 2 It is a schematic diagram of the external structure of the right wing support assembly after being unfolded; Figure 3 This is a schematic diagram of the external structure of the present invention after it is fully unfolded; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at center A; Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the figure.

[0012] In the figure: 1. Satellite platform; 101. Mounting seat; 2. Crimp release assembly; 201. Cutter; 202. Sleeve; 203. Cone; 3. Center antenna assembly; 301. Center planar antenna; 302. Center antenna mounting plate; 4. First hinge drive assembly; 401. Drive bracket; 402. Drive; 5. Left wing support assembly; 501. Left wing antenna mounting plate; 502. First support ear; 503. First support frame; 504. First oblique support; 6. Left-mounted flat antenna; 7. A second articulated drive assembly; 8. Right wing support assembly; 801. Right wing antenna mounting plate; 802. Second support ear; 803. Second support frame; 804. Second oblique support; 9. Right-placed flat antenna. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] See also Figure 1-5 , the embodiment of the present invention provides the following technical solutions: Embodiment 1: A book-shaped satellite-borne planar antenna deployment support mechanism includes a satellite platform 1, a center antenna assembly 3 is fixedly mounted on the top of the satellite platform 1 via a mounting seat 101, the center antenna assembly 3 includes a center planar antenna 301, and the front and rear sides of the center planar antenna 301 are fixedly connected with a center antenna mounting plate 302, and the center antenna mounting plate 302 is fixedly mounted on the top of the satellite platform 1 via the mounting seat 101.

[0015] As a preferred solution, in order to realize the book configuration of the antenna, a left-placed planar antenna 6 and a right-placed planar antenna 9 are respectively arranged on both sides of the central antenna assembly 3. In order to realize the support and reinforcement of the left-placed planar antenna 6, the left side of the central antenna assembly 3 is hinged with a left-wing support assembly 5 through a first hinged drive assembly 4, and the left-placed planar antenna 6 is fixedly installed in the left-wing support assembly 5. The left-wing support assembly 5 includes two left-wing antenna mounting plates 501. The left-placed planar antenna 6 is fixedly installed between the two left-wing antenna mounting plates 501. The opposite sides of the two left-wing antenna mounting plates 501 are fixedly connected to the first support frame 503 through the first support ear 502. And one side of the first support frame 503 is fixedly connected to the top of the left wing antenna mounting plate 501 through the first oblique support 504, wherein the first articulated drive assembly 4 includes a driver bracket 401, and a driver 402 is fixedly installed on the surface of the driver bracket 401, wherein the output end of the driver 402 is fixedly connected to one side of the first support frame 503, and the driver 402 is used to drive the first support frame 503 to perform a 180° reciprocating rotation, and the driver bracket 401 is fixedly installed on one side of the center antenna mounting plate 302, and the two first support frames 503 are respectively hinged to the left sides of the two center antenna mounting plates 302.

[0016] As a preferred solution, in order to achieve support and reinforcement for the right-mounted planar antenna 9, the right side of the central antenna assembly 3 is hinged with a right-wing support assembly 8 through a second hinged drive assembly 7, and the right-mounted planar antenna 9 is fixedly installed in the right-wing support assembly 8. Specifically, the right-wing support assembly 8 includes two right-wing antenna mounting plates 801, and the right-mounted planar antenna 9 is fixedly installed between the two right-wing antenna mounting plates 801. The opposite sides of the two right-wing antenna mounting plates 801 are fixedly connected to a second support frame 803 through a second support ear 802, and one side of the second support frame 803 is fixedly connected to the top of the right-wing antenna mounting plate 801 through a second oblique support 804. To facilitate antenna storage, the opposite sides of the two second support frames 803 are used in conjunction with the opposite sides of the two first support frames 503 respectively. Further description: the second articulated drive assembly 7 includes a driver bracket 401, and a driver 402 is fixedly installed on the surface of the driver bracket 401, wherein the output end of the driver 402 is fixedly connected to one side of the second support frame 803, and the driver 402 is used to drive the second support frame 803 to perform a 180° reciprocating rotation, and the driver bracket 401 is fixedly installed on the other side of the central antenna mounting plate 302, and the two second support frames 803 are respectively hinged to the right sides of the two central antenna mounting plates 302.

[0017] As a preferred solution, in order to ensure the stability of the antenna when it is in the storage state, a crimping release assembly 2 is also fixedly installed on the top of the center antenna mounting plate 302. The crimping release assembly 2 includes a cutter 201, which is fixedly installed on the top of the center antenna mounting plate 302. A sleeve 202 is passed through and fixedly installed on the top of the left-wing antenna mounting plate 501, and a cone 203 is passed through and fixedly installed on the top of the right-wing antenna mounting plate 801. The cone 203, sleeve 202 and cutter 201 are used in combination, and the clamping force is mainly provided by a clamping rod or a clamping rope. When the antenna array is unlocked and released, the cutter 201 is energized to work, cutting off the clamping rod or the clamping rope to release the clamped antenna array, and the driver 402 drives the antenna array to unfold.

[0018] In this embodiment, the book-shaped antenna can be easily unfolded and stored without shielding the antenna, which improves the imaging and detection accuracy of the satellite system and helps to suppress thermal deformation of the antenna array when it is working in orbit.

[0019] The initial state is as follows Figure 1 In the state shown, when in use, the cutter 201 is powered on to cut the pressing rod or the pressing rope, and the driver 402 in the second hinged driving assembly 7 is started. The driver 402 drives the second support frame 803 to rotate, and the second support frame 803 drives the right-mounted planar antenna 9 to rotate 180 degrees. Figure 2 Status shown; The driver 402 in the first hinge drive assembly 4 is started, and the driver 402 drives the first support frame 503 to rotate, and the first support frame 503 drives the left-mounted planar antenna 6 to rotate 180 degrees. Figure 3 Status shown.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A book-shaped satellite-borne planar antenna deployment support mechanism, comprising a satellite platform (1), characterized in that: A central antenna assembly (3) is fixedly mounted on the top of the satellite platform (1) via a mounting seat (101); a left wing support assembly (5) is hingedly connected to the left side of the central antenna assembly (3) via a first hinge drive assembly (4); a left planar antenna (6) is fixedly mounted in the left wing support assembly (5); a right wing support assembly (8) is hingedly connected to the right side of the central antenna assembly (3) via a second hinge drive assembly (7); a right planar antenna (9) is fixedly mounted in the right wing support assembly (8); and a crimping release assembly (2) is also fixedly mounted on the surface of the central antenna assembly (3); the crimping release assembly (2) is used in conjunction with the left wing support assembly (5) and the right wing support assembly (8), respectively.

2. The book-shaped satellite-borne planar antenna deployment support mechanism according to claim 1, characterized in that: The central antenna assembly (3) comprises a central planar antenna (301), the front and rear sides of the central planar antenna (301) are both fixedly connected to a central antenna mounting plate (302), and the central antenna mounting plate (302) is fixedly mounted on the top of the satellite platform (1) via a mounting seat (101).

3. The book-shaped satellite-borne planar antenna deployment support mechanism according to claim 2, characterized in that: The left wing support assembly (5) comprises two left wing antenna mounting plates (501), and opposite sides of the two left wing antenna mounting plates (501) are fixedly connected to a first support frame (503) via a first support ear (502), and one side of the first support frame (503) is fixedly connected to the top of the left wing antenna mounting plate (501) via a first oblique support (504); The left-mounted planar antenna (6) is fixedly mounted between two left-wing antenna mounting plates (501).

4. The book-shaped satellite-borne planar antenna deployment support mechanism according to claim 3, characterized in that: The right wing support assembly (8) comprises two right wing antenna mounting plates (801), opposite sides of the two right wing antenna mounting plates (801) are fixedly connected to a second support frame (803) via a second support ear (802), and one side of the second support frame (803) is fixedly connected to the top of the right wing antenna mounting plate (801) via a second oblique support (804); The right-mounted planar antenna (9) is fixedly mounted between two right-wing antenna mounting plates (801); The opposite sides of the two second support frames (803) are used in conjunction with the opposite sides of the two first support frames (503).

5. The book-shaped satellite-borne planar antenna deployment support mechanism according to claim 4, characterized in that: The first articulated drive assembly (4) and the second articulated drive assembly (7) both comprise a drive bracket (401), and a drive (402) is fixedly mounted on the surface of the drive bracket (401); The output end of the driver (402) in the first articulated drive assembly (4) is fixedly connected to one side of the first support frame (503), and the driver bracket (401) is fixedly mounted on one side of the middle antenna mounting plate (302), and the two first support frames (503) are respectively hinged to the left sides of the two middle antenna mounting plates (302); The output end of the driver (402) in the second articulated drive assembly (7) is fixedly connected to one side of the second support frame (803), and the driver bracket (401) is fixedly mounted on the other side of the center antenna mounting plate (302), and the two second support frames (803) are respectively articulated to the right sides of the two center antenna mounting plates (302).

6. The book-shaped satellite-borne planar antenna deployment support mechanism according to claim 5, characterized in that: The crimping release assembly (2) comprises a cutter (201), the cutter (201) being fixedly mounted on the top of a central antenna mounting plate (302), a sleeve (202) penetrating through and fixedly mounted on the top of the left-wing antenna mounting plate (501), and a cone (203) penetrating through and fixedly mounted on the top of the right-wing antenna mounting plate (801), the cone (203), the sleeve (202) and the cutter (201) being used in coordination with each other.

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