CN115755331A - High-utilization-rate large-aperture optical mirror surface unfolding device - Google Patents
High-utilization-rate large-aperture optical mirror surface unfolding device Download PDFInfo
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- CN115755331A CN115755331A CN202211481427.9A CN202211481427A CN115755331A CN 115755331 A CN115755331 A CN 115755331A CN 202211481427 A CN202211481427 A CN 202211481427A CN 115755331 A CN115755331 A CN 115755331A
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Abstract
The invention provides a high-utilization-rate large-caliber optical mirror surface unfolding device which comprises an endoscope, an outer mirror, a hinge mechanism and a supporting rod, wherein the endoscope and the outer mirror are connected through the supporting rod; the outer mirror comprises a plurality of sub-lenses, and any two adjacent sub-lenses are connected through a hinge mechanism; the outer mirror comprises a folded state and an unfolded state, and the hinge mechanism is also used for switching the outer mirror between the folded state and the unfolded state; when the outer mirror is in a folded state, the outer mirror is positioned below the inner mirror; when the outer mirror is in an unfolded state, the plurality of sub-lenses are uniformly distributed along the outer side of the inner mirror in the circumferential direction. The foldable telescopic endoscope is matched with the outer mirror for use, the folding state and the unfolding state of the outer mirror are switched mutually through the hinge mechanism, the rigid connection of the inner mirror and the outer mirror is realized through the support rod, the reliability of the whole device is improved, the in-orbit synchronous, controllable and orderly unfolding of the inner mirror surface and the outer mirror surface is realized through reasonable spatial layout, and the space utilization rate and the storage ratio are improved.
Description
Technical Field
The invention relates to the technical field of spacecraft structures, in particular to a high-utilization-rate large-caliber optical mirror surface unfolding device.
Background
With the development of optical satellite technology, imaging requirements are higher and higher, the size of a mirror surface of a large-aperture optical satellite is larger and larger, the aperture of some mirror surfaces reaches the magnitude of 10m, and the mirror surface emission section of the satellite is required to be folded and unfolded after the satellite is in orbit. How to ensure higher utilization ratio in a limited space, and realizing a lens with a larger caliber after being unfolded is the focus of recent research and design.
Chinese patent publication No. CN107479161B discloses a primary mirror mechanism. According to the invention, N groups of block type mirror bodies are uniformly arranged around a linkage device, an unfolding locking device comprises N first articulators, N second articulators, N third articulators and N fourth articulators, the tops of two adjacent groups of block type mirror bodies are connected through one first articulator, the bottoms of two adjacent groups of block type mirror bodies are connected through one second articulator, each group of block type mirror bodies comprises two sub-mirrors which are arranged in parallel, the tops of the two sub-mirrors are connected through one third articulator, the bottoms of the two sub-mirrors are connected through one fourth articulator, and the N groups of block type mirror bodies are folded and unfolded through the unfolding locking device.
A prior chinese patent publication No. CN105044878B discloses a furled and unfolded large-aperture optical mirror with a high storage ratio, which includes a mirror body formed by connecting multi-lobed sub-lenses; the two adjacent sub-lenses are connected by a hinge mechanism; the hinge mechanism comprises a hinge mechanism a and a hinge structure b, wherein the hinge structure a comprises one active fixed hinge and two floating hinges, and the hinge structure b comprises three floating hinges. This patent does not effectively utilize the outer mirror intermediate position, has caused a large amount of wastes of space, and its lens is only outside ring, does not realize real heavy-calibre optical lens.
The inventor thinks that in the existing furling and unfolding mirror surface, most furling and unfolding mechanisms are passively unfolded and have high reliability, but the defect that the unfolding process is uncontrollable is also generated; in addition, the space utilization rate and the storage ratio of part of active unfolding mechanisms are not high, and a large amount of idle space is left after the unfolding mechanisms are unfolded, so that the space is wasted. Therefore, it is necessary to provide a structure with high space utilization rate, high housing ratio, and high reliability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-utilization-rate large-aperture optical mirror surface unfolding device.
The invention provides a high-utilization-rate large-aperture optical mirror surface unfolding device, which comprises: the endoscope and the outer mirror are connected through the support rod; the outer mirror comprises a plurality of sub-mirror pieces, and any two adjacent sub-mirror pieces are connected through the hinge mechanism; the outer mirror comprises a folded state and an unfolded state, and the hinge mechanism is further used for switching the folded state and the unfolded state of the outer mirror; when the outer mirror is in a folded state, the outer mirror is positioned below the endoscope; when the outer endoscope is in an unfolded state, the sub-lenses are uniformly distributed along the outer side of the endoscope in the circumferential direction.
Preferably, the hinge mechanism comprises a passive hinge and an active hinge; two ends of the joint of any two adjacent sub-lenses are hinged and connected through the passive hinge.
Preferably, when the outer mirror is in a folded state, the middle part of the joint of any sub-mirror piece and the adjacent sub-mirror piece on the outer side is hinged through the active hinge.
Preferably, when the outer mirror is in the folded state, two adjacent sub-lenses of any one of the active hinges are in the fitted state.
Preferably, the active hinge comprises a driving device, and the active hinge is used for driving the outer mirror to unfold or fold.
Preferably, the support bar comprises a plurality of support bars; one end of any one supporting rod, which is far away from the endoscope, is rotatably connected with the active hinge.
Preferably, the shape of the endoscope comprises a circle; the outer part of the endoscope is provided with an outer frame, one end of the support rod close to the endoscope is rotatably connected with the outer frame, and the joint of the support rod and the outer frame is circumferentially and uniformly distributed on the outer frame.
Preferably, when the outer mirror is in the unfolded state, the direction of any one of the support rods is consistent with the direction of the joint of the two corresponding sub-lenses.
Preferably, when the outer mirror is in the deployed state, the inner mirror and the outer mirror are in the same plane.
Preferably, the diameter of the endoscope comprises 3.4m to 8.4m; when the outer scope is in a unfolding state, the outer diameter of the outer scope comprises 10-15 m.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention realizes the mutual switching between the furled state and the unfolded state of the outer mirror through the matching use of the inner mirror and the outer mirror and the rigid connection between the inner mirror and the outer mirror through the supporting rod, which is beneficial to improving the reliability of the whole device.
2. According to the invention, when in the folded state, the outer mirror is folded below the inner mirror, so that the outer space of the inner mirror is fully utilized, and when in the unfolded state, the inner mirror is positioned in the outer mirror, so that the inner space of the unfolded outer mirror is fully utilized, thereby being beneficial to improving the effective utilization rate of the whole main mirror surface and realizing large caliber and light weight of the mirror surface.
3. The invention connects the lenses of the outer mirror through the passive hinge, drives the outer mirror to unfold and fold through the active hinge, has low requirement on the precision of the paper diaper, is beneficial to avoiding the interference among the lenses and is beneficial to realizing the controllable, orderly and reliable unfolding.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the overall structure of an external mirror in a folded state according to the present invention;
FIG. 2 is a bottom view of the overall structure of the present invention, primarily embodying the outer mirror in a collapsed condition;
fig. 3 is a schematic view of the overall structure of the external mirror in the unfolded state according to the present invention.
Shown in the figure:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the present invention.
As shown in fig. 1-3, the high-utilization-rate large-aperture optical mirror surface unfolding device provided by the invention comprises an endoscope 1, an outer mirror 2, a hinge mechanism and a support rod 5, wherein the endoscope 1 and the outer mirror 2 are connected through the support rod 5; the outer mirror 2 comprises a plurality of sub-lenses, and any two adjacent sub-lenses are connected through a hinge mechanism; the outer mirror 2 comprises a folded state and an unfolded state, and the hinge mechanism is also used for switching the outer mirror 2 between the folded state and the unfolded state; when the outer mirror 2 is in a folded state, the outer mirror 2 is positioned below the endoscope 1; when the outer mirror 2 is in the unfolding state, the plurality of sub-lenses are uniformly distributed along the outer side of the inner mirror 1 in the circumferential direction.
In the process of unfolding the mirror surface, the sub-mirror is driven to unfold by the hinge mechanism, and the support rod 5 is driven to rotate, so that the endoscope 1 moves into the outer mirror 2. In the process of folding the mirror surface, the sub-mirror is driven by the hinge mechanism to fold, and the support rod 5 is driven to rotate, so that the endoscope 1 moves above the outer mirror 2, and the in-orbit synchronous, controllable, orderly and reliable unfolding of the inner mirror surface and the outer mirror surface is realized.
The size of the mirror surface can be adjusted according to the actual situation, and when the outer mirror 2 is in the unfolded state, the outer diameter of the outer mirror 2 is 10-15 m. The endoscope 1 is limited by the size of the outer mirror 2 and should be smaller than the outer diameter of the outer mirror 2 minus 6.6m. Therefore, the diameter of the endoscope 1 is 3.4m to 8.4m.
The application takes the following data as an example: the diameter of the endoscope 1 is 4.5m; when the outer mirror 2 is in the deployed state, the diameter of the outer mirror 2 is 13m. When the outer mirror 2 is in a folded state, the sub-lenses of the outer mirror 2 are folded in an umbrella-shaped folding mode, and the inner mirror 1 is connected with the outer mirror 2 through 6 support rods 5 and is positioned above the outer mirror 2. When the outer mirror 2 is in the unfolding state, the inner mirror 1 is positioned in the center of the outer mirror 2, the inner mirror 1 and the outer mirror 2 are positioned on the same plane, and the position is limited through the support rod 5, so that the rigidity after unfolding is ensured.
The hinge mechanism comprises a passive hinge 3 and an active hinge 4, and two ends of the joint of any two adjacent sub-lenses are hinged through the passive hinge 3. The outer mirror 2 comprises 24 sub-lenses. Two adjacent sub-lenses are connected through 2 passive hinges 3, the passive hinges 3 are located at two ends of the joint of the two sub-lenses, and the number of the passive hinges 3 is 48.
The active hinge 4 includes a driving means, and the active hinge 4 is used to drive the outer mirror 2 to be unfolded or folded. When the outer mirror 2 is in the folded state, the middle part of the joint of one side of any sub-mirror piece positioned at the outer side and the adjacent sub-mirror piece is hinged through the active hinge 4, and two adjacent sub-mirror pieces of any active hinge 4 are in the attached state. When the outer mirror 2 is in a furled state, two adjacent sub-lenses in a joint state are taken as a group, 12 groups of sub-lenses are provided, an active hinge 4 driven by a motor is arranged between each group of sub-lenses, the active hinge 4 is arranged in the middle of the joint of each group of sub-lenses, and the number of the active hinges 4 is 12.
In the process of unfolding the mirror surface, the active hinge 4 drives the sub-mirror to unfold and drives the passive hinge 3 to rotate and unfold, and further drives the support rod 5 to rotate, so that the endoscope 1 moves into the outer endoscope 2. In the process of folding the mirror surface, the active hinge 4 drives the sub-mirror to fold and drives the passive hinge 3 to rotate and close, and further drives the support rod 5 to rotate, so that the endoscope 1 moves above the outer endoscope 2. The on-orbit synchronous unfolding device is simple in structure, low in requirement on unfolding precision, not prone to interference between lenses, higher in unfolding reliability, and capable of achieving on-orbit synchronous, controllable, orderly and reliable unfolding of the inner mirror surface and the outer mirror surface.
The shape of the endoscope 1 comprises a circle. This application has set up scope 1 in the central point of outer mirror 2, has greatly improved space utilization and has accomodate than, and the cooperation of interior outer mirror is used, has realized high resolution heavy-calibre optical lens.
The outer mirror 2 comprises 24 sub-lenses, 4 sub-lenses are arranged between every two support rods 5, and the number of the support rods 5 is 6. The outside of scope 1 is provided with the frame, and 6 spinal branch vaulting poles 5 are close to the one end of scope 1 and all are connected with the frame rotation, and are circumference evenly distributed on the frame with the junction of frame at 6 spinal branch vaulting poles 5. One end of any supporting rod 5 far away from the endoscope 1 is rotatably connected with the active hinge 4. When the outer mirror 2 is in the unfolded state, the direction of any supporting rod 5 is consistent with the direction of the joint of two adjacent sub-lenses.
The endoscope 1 can be unfolded or folded along with the rotation of the 6 support rods, and the in-orbit synchronous, controllable and orderly unfolding of the inner mirror surface and the outer mirror surface is realized through reasonable spatial layout, so that the inner mirror and the outer mirror are ensured to have no interference and clamping stagnation in the unfolding process. The 6 support rods are connected with the endoscope 1 and the outer endoscope 2, so that the system rigidity in a folded or unfolded state can be effectively ensured.
The inner space of this application make full use of after 2 expandes outside mirrors installs scope 1 that can take up and expand, has improved the effective utilization of whole main mirror surface. The integrated design is carried out on the inner mirror and the outer mirror in order to adapt to the unfolding and folding of the central endoscope 1, the integrated design comprises an active hinge 4 and a passive hinge 3 on the outer mirror 2, a rotatable support rod 5 and the like, the in-orbit synchronous, controllable, orderly and reliable unfolding of the inner mirror surface and the outer mirror surface can be realized through reasonable spatial layout, and the phenomenon of interference and clamping stagnation of the inner mirror and the outer mirror in the unfolding process is ensured. The 6 support rods effectively ensure the system rigidity in the furled and unfolded states. The whole lens that comprises scope 1 and outer mirror 2 has realized characteristics such as heavy-calibre, lightweight, high, the reliability of accomodating relative altitude, high rate of utilization.
Principle of operation
In the process of unfolding the mirror surface, the active hinge 4 drives the sub-mirror to unfold and drives the passive hinge 3 to rotate and unfold, and further drives the support rod 5 to rotate, so that the endoscope 1 moves into the outer endoscope 2. In the process of folding the mirror surface, the active hinge 4 drives the sub-mirror to fold and drives the passive hinge 3 to rotate and close, and further drives the support rod 5 to rotate, so that the endoscope 1 moves above the outer endoscope 2. The novel optical fiber expansion device is simple in structure, low in expansion precision requirement, not prone to interference between lenses, high in expansion reliability, and capable of achieving in-orbit synchronization, controllability, order and reliable expansion of the inner mirror surface and the outer mirror surface.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A high-utilization-rate large-aperture optical mirror unfolding device is characterized by comprising: the endoscope comprises an endoscope (1), an outer mirror (2), a hinge mechanism and a support rod (5), wherein the endoscope (1) and the outer mirror (2) are connected through the support rod (5);
the outer mirror (2) comprises a plurality of sub-mirror pieces, and any two adjacent sub-mirror pieces are connected through the hinge mechanism;
the outer mirror (2) comprises a folded state and an unfolded state, and the hinge mechanism is also used for switching the folded state and the unfolded state of the outer mirror (2) mutually;
when the outer mirror (2) is in a folded state, the outer mirror (2) is positioned below the inner mirror (1);
when the outer mirror (2) is in an unfolded state, the sub-lenses are uniformly distributed along the outer side of the inner mirror (1) in the circumferential direction.
2. The high-utilization-rate large-aperture optical mirror deployment apparatus according to claim 1, wherein the hinge mechanism comprises a passive hinge (3) and an active hinge (4);
two ends of the joint of any two adjacent sub-lenses are hinged through the passive hinge (3).
3. The high-utilization-rate large-aperture optical mirror surface unfolding device according to claim 2, wherein when the outer mirror (2) is in a folded state, the middle of the joint of any one of the sub-mirror surfaces at the outer side and the adjacent sub-mirror surface is hinged through the active hinge (4).
4. The high-utilization-rate large-aperture optical mirror unfolding device according to claim 3, wherein when the outer mirror (2) is in the folded state, two adjacent sub-mirrors of any one of the active hinges (4) are in the fitted state.
5. The high-utilization-rate large-aperture optical mirror unfolding device according to claim 2, wherein the active hinge (4) comprises a driving device, and the active hinge (4) is used for driving the outer mirror (2) to unfold or fold.
6. The high-utilization-rate large-aperture optical mirror deployment apparatus according to claim 3, wherein said support rods (5) comprise a plurality of support rods;
one end of any one supporting rod (5) far away from the endoscope (1) is rotatably connected with the active hinge (4).
7. The high-utilization-rate large-aperture optical mirror deployment device according to claim 6, wherein the shape of the endoscope (1) comprises a circle;
the outside of scope (1) is provided with the frame, arbitrary bracing piece (5) are close to the one end of scope (1) all with the frame rotates to be connected, just bracing piece (5) with the junction of frame is circumference evenly distributed on the frame.
8. The unfolding apparatus for optical mirror surface with high utilization rate and large aperture according to claim 6, wherein when the outer mirror (2) is in the unfolded state, the direction of any one of the support rods (5) is consistent with the direction of the joint of the two corresponding sub-mirror plates.
9. The high-utilization-rate large-aperture optical mirror deployment device according to claim 1, wherein the inner mirror (1) and the outer mirror (2) are in the same plane when the outer mirror (2) is in the deployed state.
10. The high-utilization-rate large-aperture optical mirror deployment device according to claim 1, wherein the diameter of the endoscope (1) comprises 3.4m to 8.4m;
when the outer mirror (2) is in a deployed state, the outer diameter of the outer mirror (2) is 10-15 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481427.9A CN115755331A (en) | 2022-11-24 | 2022-11-24 | High-utilization-rate large-aperture optical mirror surface unfolding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481427.9A CN115755331A (en) | 2022-11-24 | 2022-11-24 | High-utilization-rate large-aperture optical mirror surface unfolding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115755331A true CN115755331A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211481427.9A Pending CN115755331A (en) | 2022-11-24 | 2022-11-24 | High-utilization-rate large-aperture optical mirror surface unfolding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115755331A (en) |
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- 2022-11-24 CN CN202211481427.9A patent/CN115755331A/en active Pending
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