CN114047594B - Foldable reflector support truss structure - Google Patents
Foldable reflector support truss structure Download PDFInfo
- Publication number
- CN114047594B CN114047594B CN202111400555.1A CN202111400555A CN114047594B CN 114047594 B CN114047594 B CN 114047594B CN 202111400555 A CN202111400555 A CN 202111400555A CN 114047594 B CN114047594 B CN 114047594B
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- truss
- folding
- joint
- rod
- folding truss
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
Abstract
The invention provides a foldable reflector support truss structure, and belongs to the field of optical precision instruments. The problems that the existing reflector support mostly adopts a fixed truss rod or a fixed bearing cylinder structure, the size is large, the space utilization rate is low, and the emission cost is high are solved. The folding truss comprises a folding truss body, a driving mechanism, truss rods and a reflecting mirror assembly, wherein the folding truss body comprises a first folding truss rod and a second folding truss rod, the upper end of the first folding truss rod is rotationally connected with the lower end of the second folding truss rod, the lower end of the first folding truss rod is connected with the driving mechanism, the driving mechanism drives the first folding truss rod to rotate, the upper end of the second folding truss rod is rotationally connected with the reflecting mirror assembly, the number of the truss rods is two, the upper end of each truss rod is fixedly connected with the reflecting mirror assembly, the lower end of each truss rod is rotationally connected with a U-shaped mounting frame, and the U-shaped mounting frame is fixedly connected with a truss connecting gasket. It is mainly used for supporting the reflecting mirror.
Description
Technical Field
The invention belongs to the field of optical precision instruments, and particularly relates to a foldable reflector support truss structure.
Background
With the continuous development of spatial optical loading, higher and higher requirements are placed on the imaging quality of an optical system, and the imaging quality approaches the diffraction limit. Increasing the aperture of the optical load is one of the effective methods of increasing the resolution of the optical load, so more and more engineers focus on how to increase the aperture of the optical load. However, the larger the optical load aperture, the larger the mirror support structure required and the larger the load volume. The reflector supporting mode of the traditional space optical load mostly adopts a fixed truss rod or a fixed bearing cylinder structure, and occupies a large space of the carrier rocket in the launching process. Because of the limited ability to launch rockets and propel, it is difficult to launch large caliber telescopes into space, and it is therefore necessary to develop an optical load that can be assembled and deployed on-orbit.
Disclosure of Invention
The invention provides a foldable reflector support truss structure for solving the problems in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a collapsible speculum support truss structure, it includes folding truss, actuating mechanism, truss pole and speculum subassembly, folding truss includes first folding truss pole and second folding truss pole, first folding truss pole upper end rotates with second folding truss pole lower extreme and links to each other, first folding truss pole lower extreme links to each other with actuating mechanism, rotates through actuating mechanism drive first folding truss pole, second folding truss pole upper end rotates with the speculum subassembly and links to each other, truss pole quantity is two, and the upper end of every truss pole all links to each other with the speculum subassembly is fixed, and the lower extreme of every truss pole all rotates with U type mounting bracket to be connected, U type mounting bracket links to each other with truss connection gasket is fixed, truss connection gasket and actuating mechanism all with main speculum subassembly fixed connection.
Further, the upper end of the first folding truss rod is connected with a first middle joint, the lower end of the second folding truss rod is connected with a second middle joint, and the first middle joint is rotationally connected with the second middle joint.
Further, the upper end of the second folding truss rod is connected with a second upper connecting joint, and the second upper connecting joint is rotationally connected with the reflecting mirror assembly.
Still further, truss pole lower extreme links to each other with first connection joint down, truss pole upper end links to each other with first connection joint, first connection joint links to each other with U type mounting bracket rotation down, first connection joint and the fixed connection of speculum subassembly on, truss connection gasket and main speculum subassembly fixed connection.
Still further, actuating mechanism includes base, left frame, joint mount pad, right frame, driving motor, first drive shafting and second drive shafting, left side frame and right frame are installed in the both sides of base, first drive shafting is installed in left frame, second drive shafting is installed in right frame, driving motor links to each other with first drive shafting, the joint mount pad is installed in the middle of first drive shafting and second drive shafting, fixedly connected with second down the joint on the joint mount pad, first folding truss pole lower extreme links to each other with the second down the joint.
Furthermore, a disc-shaped grating and a grating reading head are arranged on the left side of the driving motor.
Still further, left side frame left side is connected with left safety cover, right side frame right side is connected with right safety cover, left side frame right side is provided with the rubber stopper.
Furthermore, the first transmission shafting and the second transmission shafting comprise bearings and supporting structures, and the supporting structures are connected with the left frame and the right frame through the bearings.
Further, the driving mechanism is fixedly connected to a driving mechanism mounting plate, and the driving mechanism mounting plate is fixedly connected with the main reflector assembly.
Further, the truss rods, the first folding truss rods and the second folding truss rods are made of carbon fiber composite materials.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems of large volume, low space utilization rate and high emission cost of the prior art that the reflector support mode mostly adopts a fixed truss rod or a fixed bearing cylinder structure. The foldable reflector support truss disclosed by the invention has a simple structure and high reliability, is favorable for on-orbit installation and adjustment of optical loads, reduces the occupied space of a launch rocket, can greatly reduce the launch cost, breaks through the limitation of a carrier, and realizes the optical loads in a large-caliber space. The precise shafting structure adopted by the invention has high rotation precision, has a precise angle measurement function, can feed back the position of the truss rod in real time, and improves the control precision of the driving mechanism.
Drawings
FIG. 1 is a schematic view of a folding front structure of a foldable mirror support truss structure according to the present invention;
FIG. 2 is a schematic view of a folding truss structure according to the present invention;
FIG. 3 is a schematic view of the mirror assembly connection structure according to the present invention;
FIG. 4 is a schematic perspective view of a driving mechanism according to the present invention;
FIG. 5 is a schematic diagram of a driving mechanism according to a second embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a drive mechanism according to the present invention;
FIG. 7 is a schematic view of a folded structure of a collapsible reflector support truss according to the present invention;
FIG. 8 is a schematic view of a prior-to-folding structure of a support truss structure with a primary mirror assembly according to the present invention;
fig. 9 is a schematic view showing a folded structure of a support truss structure with a primary mirror assembly according to the present invention.
The device comprises a 1-folding truss, a 2-driving mechanism, a 3-driving mechanism mounting plate, a 4-truss connecting gasket, a 5-U-shaped mounting frame, a 6-first lower connecting joint, a 7-truss rod, an 8-reflecting mirror assembly, a 9-first upper connecting joint, a 10-main reflecting mirror assembly, an 11-bearing, a 101-first folding truss rod, a 102-first middle joint, a 103-second middle joint, a 104-second folding truss rod, a 105-second upper connecting joint, a 201-base, a 202-left frame, a 203-left protecting cover, a 204-rubber limiting block, a 205-second lower connecting joint, a 206-joint mounting seat, a 207-right frame, a 208-right protecting cover, a 209-grating reading head, a 210-disc-shaped grating, a 211-driving motor, a 212-first driving shafting and a 213-second driving shafting.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 to 9 for describing the present embodiment, a foldable mirror support truss structure includes a folding truss 1, a driving mechanism 2, truss rods 7 and a mirror assembly 8, the folding truss 1 includes a first folding truss rod 101 and a second folding truss rod 104, the upper end of the first folding truss rod 101 is rotatably connected with the lower end of the second folding truss rod 104, the lower end of the first folding truss rod 101 is connected with the driving mechanism 2, the first folding truss rod 101 is driven to rotate by the driving mechanism 2, the upper end of the second folding truss rod 104 is rotatably connected with the mirror assembly 8, the number of truss rods 7 is two, the upper end of each truss rod 7 is fixedly connected with the mirror assembly 8, the lower end of each truss rod 7 is fixedly connected with a U-shaped mounting frame 5, the U-shaped mounting frame 5 is fixedly connected with a truss connection spacer 4, and the truss connection spacer 4 and the driving mechanism 2 are fixedly connected with a main mirror assembly 10.
The cylindrical surface at the upper end of the first folding truss rod 101 is fixedly connected with the inner wall of the square groove of the first middle joint 102 by adopting adhesive connection, the cylindrical surface at the lower end of the second folding truss rod 104 is fixedly connected with the inner wall of the square groove of the second middle joint 103 by adopting adhesive connection, the first middle joint 102 is rotationally connected with the second middle joint 103 by virtue of a pin shaft and an elastic retainer ring, and the first middle joint 102 can rotate around the pin shaft.
The cylindrical surface of the upper end of the second folded truss rod 104 is fixedly connected with the inner wall of the square groove of the second upper connecting joint 105 by adopting adhesive connection, the second upper connecting joint 105 is rotationally connected with the reflecting mirror assembly 8 through a pin shaft and an elastic retainer ring, and the second upper connecting joint 105 can rotate around the pin shaft.
The truss rod 7 lower end side shape cylinder adopts adhesive connection fixed continuous with the square groove inner wall of the first lower connection joint 6, the truss rod 7 upper end side shape cylinder adopts adhesive connection fixed continuous with the square groove inner wall of the first upper connection joint 9, the first lower connection joint 6 rotates with the U-shaped mounting bracket 5 through a pin roll and an elastic retainer ring to be connected, the first lower connection joint 6 can rotate around the pin roll, the first upper connection joint 9 is fixedly connected with the reflecting mirror component 8 through a flat washer, a nut and a screw, the U-shaped mounting bracket 5 is fixedly connected with the truss connection gasket 4 through the screw, and the truss connection gasket 4 is fixedly connected with the main reflecting mirror component 10 through the screw and the pin.
The driving mechanism 2 comprises a base 201, a left frame 202, a joint mounting seat 206, a right frame 207, a driving motor 211, a first transmission shaft system 212 and a second transmission shaft system 213, wherein screws and pins of the left frame 202 and the right frame 207 are arranged on two sides of the base 201, the first transmission shaft system 212 is arranged in the left frame 202, the second transmission shaft system 213 is arranged in the right frame 207, the first transmission shaft system 212 and the second transmission shaft system 213 comprise a bearing 11 and a supporting structure, and the supporting structure is connected with the left frame 202 and the right frame 207 through the bearing 11. The driving motor 211 is connected to the first transmission shaft 212 by a screw and is installed at the left side of the first transmission shaft 212 for driving the rotation of the shaft. A disc-shaped grating 210 and a grating reading head 209 are arranged on the left side of the driving motor 211 and are used for precisely measuring the rotation angle of the shaft system. The joint mounting seat 206 is mounted between the first transmission shaft system 212 and the second transmission shaft system 213 through screws, and the two shaft systems drive the joint mounting seat 206 to rotate together. The second lower connecting joint 205 is fixedly connected to the joint mounting seat 206 through screws, and the cylindrical surface at the lower end of the first folding truss rod 101 is fixedly connected with the inner wall of the square groove of the second lower connecting joint 205 through adhesive connection.
The left side of the left frame 202 is fixedly connected with a left protection cover 203 through screws, and the right side of the right frame 207 is fixedly connected with a right protection cover 208 through screws, so as to prevent dust and the like from entering the driving mechanism 2. A rubber stopper 204 is provided on the right side of the left frame 202. The rubber limiting block 204 is used for limiting the rotation angle of the shafting, so that the driving mechanism 2 is prevented from being damaged due to the galloping of the shafting motor. When the first transmission shaft 212 rotates, the first transmission shaft 212 is prevented from rotating by colliding with the rubber stopper 204 if the design angle is exceeded, and the driving mechanism 2 and the support truss are protected.
The driving mechanism 2 is fixedly connected to the driving mechanism mounting plate 3 through screws and pins, and the driving mechanism mounting plate 3 is fixedly connected with the main reflector assembly 10 through screws and pins. The truss rods 7, the first folding truss rods 101 and the second folding truss rods 104 are made of light-weight and high-rigidity materials such as carbon fiber composite materials. The first lower connecting joint 6, the first upper connecting joint 9, the first intermediate joint 102, the second intermediate joint 103, the second upper connecting joint 105 and the second lower connecting joint 205 are all made of metal materials.
The foregoing has outlined a detailed description of a collapsible mirror support truss structure provided by the present invention, wherein specific examples are provided herein to illustrate the principles and embodiments of the present invention, the above examples being provided solely to assist in understanding the method of the present invention and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (6)
1. A collapsible mirror support truss structure, characterized by: it includes folding truss (1), actuating mechanism (2), truss pole (7) and reflector subassembly (8), folding truss (1) is including first folding truss hack lever (101) and second folding truss hack lever (104), first folding truss hack lever (101) upper end is rotated with second folding truss hack lever (104) lower extreme and is linked together, first folding truss hack lever (101) lower extreme links to each other with actuating mechanism (2), drives first folding truss hack lever (101) through actuating mechanism (2) and rotates, second folding truss hack lever (104) upper end is rotated with reflector subassembly (8) and is linked together, truss pole (7) quantity is two, the upper end of every truss hack lever (7) all links to each other with reflector subassembly (8) is fixed, the lower extreme of every truss hack lever (7) all rotates with U type mounting bracket (5) to be connected, U type mounting bracket (5) are fixed to link to each other with truss connection gasket (4), truss connection gasket (4) and actuating mechanism (2) all with main subassembly (10) fixed connection, actuating mechanism (202), actuating mechanism (201), second shafting (201), base (213) are including left side joint (212), right joint (207), left side frame (202) and right frame (207) are installed in the both sides of base (201), first drive shafting (212) are installed in left frame (202), second drive shafting (213) are installed in right frame (207), driving motor (211) link to each other with first drive shafting (212), joint mount pad (206) are installed in the middle of first drive shafting (212) and second drive shafting (213), fixedly connected with second down joint (205) on joint mount pad (206), first folding truss pole (101) lower extreme links to each other with second down joint (205), disc grating (210) and grating reading head (209) are installed in driving motor (211) left side, first drive shafting (212) and second drive shafting (213) all include bearing (11) and bearing structure, bearing structure links to each other with left frame (202) and right frame (207) through bearing (11), driving mechanism (2) fixedly connected with on driving mechanism (3) and reflector (3), driving mechanism (3) are fixed connection.
2. A collapsible mirror support truss structure according to claim 1 wherein: the upper end of the first folding truss rod (101) is connected with a first middle joint (102), the lower end of the second folding truss rod (104) is connected with a second middle joint (103), and the first middle joint (102) is rotationally connected with the second middle joint (103).
3. A collapsible mirror support truss structure according to claim 1 wherein: the upper end of the second folding truss rod (104) is connected with a second upper connecting joint (105), and the second upper connecting joint (105) is rotationally connected with the reflecting mirror assembly (8).
4. A collapsible mirror support truss structure according to claim 1 wherein: the truss rod (7) lower extreme links to each other with first joint (6) down, truss rod (7) upper end links to each other with first last joint (9), first joint (6) link to each other with U type mounting bracket (5) rotation down, first last joint (9) link to each other with reflector subassembly (8) is fixed, truss connection gasket (4) and main reflector subassembly (10) fixed connection.
5. A collapsible mirror support truss structure according to claim 1 wherein: left side frame (202) left side is connected with left safety cover (203), right side frame (207) right side is connected with right safety cover (208), left side frame (202) right side is provided with rubber stopper (204).
6. A collapsible mirror support truss structure according to claim 1 wherein: the truss rods (7), the first folding truss rods (101) and the second folding truss rods (104) are made of carbon fiber composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400555.1A CN114047594B (en) | 2021-11-23 | 2021-11-23 | Foldable reflector support truss structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400555.1A CN114047594B (en) | 2021-11-23 | 2021-11-23 | Foldable reflector support truss structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114047594A CN114047594A (en) | 2022-02-15 |
| CN114047594B true CN114047594B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111400555.1A Active CN114047594B (en) | 2021-11-23 | 2021-11-23 | Foldable reflector support truss structure |
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| CN (1) | CN114047594B (en) |
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| US5115351A (en) * | 1988-03-18 | 1992-05-19 | Mitsubishi Denki Kabushiki Kaisha | Mirror support apparatus and system |
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| WO2014127813A1 (en) * | 2013-02-20 | 2014-08-28 | Esa European Space Agency | Deployable support structure |
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| CN104536113A (en) * | 2014-12-30 | 2015-04-22 | 中国科学院长春光学精密机械与物理研究所 | High-specific stiffness supporting structure of space optical remote sensor |
| CN110568581A (en) * | 2019-09-09 | 2019-12-13 | 哈尔滨工业大学 | High-precision electric reflector frame |
| CN211830693U (en) * | 2019-11-21 | 2020-10-30 | 苏州沛斯仁光电科技有限公司 | Aviation carborundum refraction mirror system |
| CN113204095A (en) * | 2021-04-30 | 2021-08-03 | 长光卫星技术有限公司 | Light-weight multifunctional secondary mirror supporting structure suitable for space camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2386047T3 (en) * | 2008-08-12 | 2017-11-30 | Sattler Ag | Lightweight low-cost solar concentrator |
| US8371088B2 (en) * | 2009-04-23 | 2013-02-12 | Donald V. Merrifield | Deployable truss with integral folding panels |
| CN102589157B (en) * | 2012-02-22 | 2014-07-23 | 湘潭牵引电气设备研究所有限公司 | Disc-type solar light condensation device |
| US9755318B2 (en) * | 2014-01-09 | 2017-09-05 | Northrop Grumman Systems Corporation | Mesh reflector with truss structure |
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2021
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115351A (en) * | 1988-03-18 | 1992-05-19 | Mitsubishi Denki Kabushiki Kaisha | Mirror support apparatus and system |
| US6076770A (en) * | 1998-06-29 | 2000-06-20 | Lockheed Martin Corporation | Folding truss |
| WO2014127813A1 (en) * | 2013-02-20 | 2014-08-28 | Esa European Space Agency | Deployable support structure |
| CN104459935A (en) * | 2014-11-27 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Thin film condensing lens structure with lens face automatically folded, unfolded, positioned and spliced |
| CN104536113A (en) * | 2014-12-30 | 2015-04-22 | 中国科学院长春光学精密机械与物理研究所 | High-specific stiffness supporting structure of space optical remote sensor |
| CN110568581A (en) * | 2019-09-09 | 2019-12-13 | 哈尔滨工业大学 | High-precision electric reflector frame |
| CN211830693U (en) * | 2019-11-21 | 2020-10-30 | 苏州沛斯仁光电科技有限公司 | Aviation carborundum refraction mirror system |
| CN113204095A (en) * | 2021-04-30 | 2021-08-03 | 长光卫星技术有限公司 | Light-weight multifunctional secondary mirror supporting structure suitable for space camera |
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| Publication number | Publication date |
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| CN114047594A (en) | 2022-02-15 |
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