CN108594399B - Supporting structure and supporting assembly of large-caliber reflector - Google Patents
Supporting structure and supporting assembly of large-caliber reflector Download PDFInfo
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- CN108594399B CN108594399B CN201810588812.0A CN201810588812A CN108594399B CN 108594399 B CN108594399 B CN 108594399B CN 201810588812 A CN201810588812 A CN 201810588812A CN 108594399 B CN108594399 B CN 108594399B
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- 239000003292 glue Substances 0.000 claims abstract description 99
- 238000002347 injection Methods 0.000 claims abstract description 75
- 239000007924 injection Substances 0.000 claims abstract description 75
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 4
- 239000004429 Calibre Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000035882 stress Effects 0.000 abstract description 23
- 230000008646 thermal stress Effects 0.000 abstract description 11
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 description 22
- 230000001070 adhesive effect Effects 0.000 description 22
- 239000010410 layer Substances 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Abstract
The invention discloses a supporting structure and a supporting component of a large-caliber reflecting mirror, relates to the technical field of space optical remote sensors, solves the problem that the shape precision of the reflecting mirror is affected by thermal stress existing in the existing supporting structure, and further solves the problem that the shape precision of the reflecting mirror is affected by bonding stress and assembly stress. The support structure comprises a nest and a support flexible hinge, wherein the nest comprises a nest body, N sections of grooves with equal radian and equal width are uniformly distributed on the end surface of the nest body along the circumferential direction and penetrate through the nest in the axial direction, wherein N is a natural number greater than or equal to 2; the nested outer wall array is provided with the injecting glue hole. The support assembly comprises a support structure and auxiliary glue injection nails with different lengths corresponding to the glue injection holes with different positions and heights, wherein the auxiliary glue injection nails are provided with L-shaped glue injection channels, and the diameters of the outlet ends of the glue injection channels are equal to those of the glue injection holes. The support structure and the support assembly are used for supporting the large-caliber reflector with low stress and high stability.
Description
Technical Field
The invention relates to the technical field of space optical remote sensors, in particular to a supporting structure and a supporting assembly of a large-caliber reflector.
Background
With the development of space-to-earth observation technology, higher and higher requirements are being placed on the resolution of the space remote sensor. The large-caliber reflector is used as a core element of the high-resolution space remote sensor, and the surface shape accuracy directly influences the imaging quality of the space remote sensor. In order to reduce the emission cost, a heavy caliber reflector is generally designed in a high light weight manner, which weakens the capability of the reflector to resist external environments such as gravity, temperature, assembly stress and the like, thereby influencing the surface shape accuracy of the reflector. The surface shape accuracy of the reflector has a great relation with the supporting structure of the reflector, and the good supporting structure can reduce the sensitivity of the surface shape to external loads such as gravity, temperature, assembly stress and the like, so that the supporting structure of the reflector is designed to be an important link for ensuring the surface shape accuracy.
The support structure of the large-caliber reflector is widely adopted as shown in fig. 1, and comprises a nest 101, wherein the outer annular surface A of the nest 101 is bonded with the inner hole of the reflector in a full-area manner; the flexible support rod 102 is connected with the reflector backboard through screws, the flexible support rod 102 is connected with the nest 101 through screws, and the flexible support rod 102 is provided with an L-shaped flexible groove 103 for releasing thermal stress and assembly stress brought by the mounting plate of the external reflector assembly.
The defects of the supporting structure are that:
1. in order to weaken thermal stress caused by temperature load, the nest 101 is made of iron-nickel alloy with adjustable linear expansion coefficient, and is matched with the linear expansion coefficient of the reflector material, so that the deformation coordination of the reflector material, the nest material and the adhesive is achieved. However, under a wide temperature working condition (for example, the temperature variation range is larger than + -5 ℃) or when the glass is applied to ULE (near zero expansion) and a microcrystalline glass body with a small linear expansion coefficient, deformation of the glass body, the nesting and the adhesive is difficult to coordinate, so that larger thermal stress is generated, and the problem of poor surface shape stability is caused. Meanwhile, when the adhesive layer is solidified, tensile stress is generated by shrinkage of the adhesive layer, the tensile stress acts on the nesting and the reflecting mirror respectively, the nesting 101 is high in rigidity and high in deformation resistance, and therefore the mirror surface bulge deformation of the bonding area of the reflecting mirror is easy to cause.
2. The A surface of the nest 101 is glued with the whole area of the main mirror Kong Huandai, the bonding interface is connected into a sheet, the uniformity is poor, local glue shortage or root glue accumulation overflow is easy to occur, and larger local stress is generated at the glue accumulation position, so that the mirror is not beneficial to obtaining high surface shape precision.
3. When the flexible support rod 102 is deformed due to unloading gravity, the flexible support rod is limited by the L-shaped flexible grooves which are vertically crossed, and only single deformation can be generated, so that a part of assembly stress caused by the mounting plate of the external reflector assembly can be remained, the influence on the small reflector is small, and a relatively obvious surface shape error can be generated for a large-caliber reflector with high surface shape precision requirement.
The defects are that the surface shape accuracy of the reflecting mirror is affected due to the existence of stress in the supporting structure, and the stability of the surface shape of the reflecting mirror is reduced, so that the imaging quality of the space remote sensor is affected.
Disclosure of Invention
The invention provides a supporting structure of a large-caliber reflecting mirror, which solves the problem that the thermal stress in the existing supporting structure affects the shape precision of the reflecting mirror surface, further solves the problem that the bonding stress and the assembly stress affect the shape precision of the reflecting mirror surface, and realizes the low-stress high-stability support of the large-caliber reflecting mirror.
The technical scheme of the invention is as follows: the utility model provides a bearing structure of heavy-calibre speculum, includes nested and supports the gentle hinge, nested outer wall links firmly with the speculum hole, support the gentle hinge one end with nested fixed connection, the other end of supporting the gentle hinge and external mirror assembly mounting panel fixed connection, its characterized in that, the nested includes nested body, along circumference equipartition N section equal radian equal width and run through nested slot in the axial on the terminal surface of nested body, wherein N is more than or equal to 2 natural number. The arc grooves uniformly distributed along the circumferential direction can effectively eliminate the thermal stress existing in the supporting structure.
Further, the distance between the groove and the nesting outer wall is smaller than the distance between the groove and the nesting inner wall, and a flexible sheet is arranged between the groove and the nesting outer wall. The flexible sheet can reduce the local rigidity of the supporting structure, and further release the thermal stress generated by difficult coordination of deformation of the mirror body, the nesting and the adhesive and the stress generated by solidification shrinkage of the adhesive layer when the temperature change is large.
In order to eliminate the bonding stress, the nested body and the mirror hole adopt a small-area bonding mode, and specifically, a plurality of glue injection holes are formed in the outer wall of the nest, namely: a plurality of key grooves which are arranged at equal intervals and are recessed towards the center direction of the nested body are formed along the inner wall of the groove, and the key grooves are arranged along the circumferential direction of the nested body and axially penetrate through the nested body; the outer side surface of the nested body is provided with a plurality of glue injection holes which are vertically communicated with the key grooves.
Further, N is equal to 3, the radian of the groove is 90 °, four key grooves are formed in each section of groove along the inner wall of the groove, each section of groove corresponds to a2×4 glue injection hole array, and each key groove corresponds to two glue injection holes.
Furthermore, the gap between the nested body and the reflecting mirror is smaller than or equal to 0.02mm, so that the glue layer is uniformly distributed after glue injection, and the bonding reliability is ensured.
Still further, the nest further comprises an annular connecting surface arranged on the end surface of the nest; the support flexible hinge comprises an annular connection base, a support cylinder and m flexible supporting legs, wherein m is a natural number which is more than or equal to 3; the annular connecting base is matched with the nested annular connecting surface and connected with the nested connecting surface through a screw; the m flexible supporting legs are arranged along the radial direction of the annular connecting base and are uniformly distributed along the circumferential direction of the end surface of the annular connecting base, one end of each flexible supporting leg is fixed on the end surface of the annular connecting base, and the other end of each flexible supporting leg is fixed with the side wall of the cylinder body of the supporting cylinder;
Each flexible supporting leg is provided with an L-shaped through groove and a plurality of mutually parallel longitudinal through grooves, the length of the vertical part of the L-shaped through groove is equal to the length of the longitudinal through groove and is smaller than the axial height of the flexible supporting leg along the supporting cylinder, and the vertical part of the L-shaped through groove is parallel to the longitudinal through groove and is perpendicular to the end face of the annular connecting base; the longitudinal through grooves comprise a first longitudinal through groove and a second longitudinal through groove, the first longitudinal through groove is downwards arranged along the top end of the flexible supporting leg, and the second longitudinal through groove is upwards arranged along the bottom end of the flexible supporting leg; the L-shaped through groove is positioned right above the end face of the annular connecting base, and the vertical part of the L-shaped through groove is equal to the second longitudinal through groove in height.
Further, m is equal to 3, and 3 flexible supporting legs are uniformly distributed along the circumferential direction of the end face of the annular connecting base.
Still further, the nested material is an iron-nickel alloy; the material for supporting the flexible hinge is TC17.
Further, the nested body is adhered to the inner hole of the reflector through epoxy resin glue.
The invention also provides a supporting component of the large-caliber reflector, which comprises the supporting structure and auxiliary glue injection nails with different lengths corresponding to the glue injection holes with different positions and heights, wherein the auxiliary glue injection nails are provided with L-shaped glue injection channels; the diameter of the outlet end of the glue injection channel is equal to the diameter of the glue injection hole. The auxiliary glue injection holes are convenient for injecting glue into the gap between the nesting and the reflecting mirror through the glue injection holes, and residual adhesive can be sheared, so that the adhesive stress is effectively eliminated.
Compared with the prior art, the invention has the beneficial effects that:
1. The grooves are formed in the nesting, the distance between the grooves and the outer wall of the nesting is smaller than the distance between the grooves and the inner wall of the nesting, the flexible thin sheets are arranged between the grooves and the outer wall of the nesting, the local rigidity of the supporting structure is reduced by the grooves and the flexible thin sheets, the thermal stress generated by the fact that deformation of the mirror body, the nesting and the adhesive is difficult to coordinate when the temperature change is large and the stress generated by the solidification and shrinkage of the adhesive layer are effectively released, and the low-stress high-stability supporting of the large-caliber reflecting mirror is realized.
2. According to the support structure, the glue injection holes distributed in an array are formed in the flexible sheet, and the auxiliary glue injection nails are used for injecting the adhesive through the glue injection holes, so that the problems that bonding areas are connected into sheets, the glue amount cannot be controlled, the glue layer is unevenly distributed, the adhesive remains, the adhesive overflows and the like in a traditional glue coating mode are solved, and the influence of the adhesive residual stress on the surface of the reflecting mirror is avoided.
3. The supporting flexible hinge of the supporting structure is uniformly distributed with a plurality of groups of flexible supporting legs along the end face of the annular connecting base, flexibility along the axial direction, the radial direction and any other directions of the reflecting mirror is provided, thermal stress and assembly stress introduced by the mounting plate of the external reflecting mirror assembly can be fully released, and the surface shape precision of the reflecting mirror is ensured.
Drawings
FIG. 1 is a schematic view of a flexible support structure of a prior art large caliber reflector;
FIG. 2 is a cross-sectional view of a large caliber reflector support structure of the present invention;
FIG. 3 is a schematic view of a nest in a support structure of the present invention;
FIG. 4 is a cross-sectional view of the auxiliary glue injection nail of the present invention after insertion into a keyway;
FIG. 5 is a schematic view of the auxiliary glue injection nail of the present invention for removing residual adhesive;
FIG. 6 is a graph showing the expansion effect of the outer side surface of the nest after the glue injection is completed;
FIG. 7 is a block diagram of a support hinge in a support structure of the present invention;
FIG. 8 is a cross-sectional view of a support hinge in a support structure of the present invention;
The reference numerals in the drawings are: 101-nesting; 102-a flexible support rod; 103-L-shaped flexible grooves; 1-a mirror; 2-supporting a flexible hinge; 3-screws; 4-nesting; 5-epoxy resin glue; 6-conical surface; 7-flexible sheet; 8-grooves; 9-keyway; 10-injecting glue holes; 11-a rigid connection section; 12-auxiliary glue injection nails; 13-a glue injection channel; 14-an outlet end of the glue injection channel; 15-gap of nest and mirror; 16-glue spots; 17-residual adhesive; 18-auxiliary glue injection nails outer side surfaces; 19-a flange; 20-annular connection surfaces; 21-an annular connection base; 22-a support cylinder; 23-flexible legs; 24-a first longitudinal through slot; 25-a second longitudinal through slot; 26- "L" shaped through slot.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As can be seen from fig. 2, the support structure of the present invention comprises a nest 4 and a support hinge 2, wherein the outer wall of the nest 4 is fixedly connected with a mirror hole of the mirror, one end of the support hinge 2 is connected with the nest 4 through a screw 3, and the other end is connected with an external mirror assembly mounting plate through a flange 19 at the top end; the reflector 1 is made of ultra-low expansion fused quartz (ULE), the nest 4 is made of iron-nickel alloy matched with the ULE linear expansion coefficient, and the reflector 1 is bonded with the nest 4 through epoxy resin glue 5; the material supporting the flexible hinge 2 is TC17. During assembly, the reflector 1 is reversely buckled, the nest 4 is vertically placed into the reflector hole, a gap between the nest and the reflector hole is guaranteed to be 0.02mm through a metal wire with the diameter of 0.02mm, and even distribution and reliable adhesion of glue layers after glue injection are guaranteed.
As can be seen from fig. 3, the nest 4 includes a nest body and an annular connecting surface 20 disposed on the end surface of the nest, the outer side surface of the nest body is a conical surface 6 adapted to the mirror hole of the mirror, three grooves 8 (also referred to as slots) with equal radian and equal width penetrating the nest 4 in the axial direction are uniformly distributed on the end surface of the nest 4 along the circumferential direction, and the distance between the grooves 8 and the outer wall of the nest 4 is smaller than the distance between the grooves and the inner wall of the nest 4, so that flexible sheets 7 with equal radian are formed on the outer side of the grooves 8. The rigidity of the nest 4 is reduced through the flexible sheet 7 and the groove 8, and when the release temperature change is large, thermal stress and stress generated by solidification shrinkage of the adhesive layer are generated due to the fact that deformation of the nest 4, the epoxy resin adhesive 5 and the reflecting mirror 1 are difficult to coordinate; the three grooves 8 are not communicated with each other so as to ensure that the nest 4 maintains certain rigidity.
The radians of the flexible sheet 7 and the grooves 8 are 90 degrees, and the flexible sheet is provided with a 2X 4 glue injection hole array; four key grooves 9 which are arranged at equal intervals and are recessed towards the center direction of the nested body are formed in the inner wall of the groove 8, the four key grooves 9 are arranged along the circumferential direction of the nested body and axially penetrate through the nested body, the glue injection holes 10 are vertically communicated with the key grooves 9, and each key groove in the embodiment corresponds to two glue injection holes 10.
As can be seen from fig. 4, the support assembly of the present invention includes a support structure and an auxiliary injection nail 12, wherein the auxiliary injection nail 12 is provided with an "L" type injection channel 13; the diameter of the outlet end 14 of the glue injection channel is equal to the diameter of the glue injection hole 10. Auxiliary glue injection nails with different lengths correspond to glue injection holes with different positions and heights. In this embodiment, two sets of auxiliary glue injection nails with different lengths are arranged, and glue injection is performed inwards through the glue injection holes with corresponding positions and heights respectively.
During glue injection, the auxiliary glue injection nails 12 are inserted into the key grooves 9, glue is injected inwards by the injector through the glue injection channels 13, epoxy resin glue flows into the glue injection holes 10 through the outlet ends 14 of the glue injection channels and then enters the gaps 15 between the nesting and the reflecting mirrors, the glue layers are distributed in the form of discrete glue spots by controlling injection pressure and glue injection quantity, and the glue layers are solidified to form glue spots 16 with fixed diameters, as shown in fig. 6. The discrete glue spots with fixed diameters enable the nested body and the mirror hole of the reflecting mirror to be adhered in a small-area manner, so that the problem that the adhesive areas are connected into sheets and glue layers are unevenly distributed is avoided, the adhesive stress is eliminated, and the adhesive quality is ensured.
In specific implementation, the relation between the diameter of the adhesive spots 16, the injection pressure and the adhesive injection amount is calibrated through multiple injection tests, and the epoxy resin adhesive 5 is black adhesive, so that the adhesive spot size is easy to determine.
After the glue injection is completed, as shown in fig. 5, after the glue layer is cured for a period of time, the auxiliary glue injection nail 12 is pulled out, and at this time, the residual adhesive 17 accumulated on the glue injection channel 13 and the outlet end 14 of the glue injection channel is sheared off by the outer side surface 18 of the auxiliary glue injection nail 12, so that the local stress generated by accumulation of residual glue on the glue injection hole is reduced.
As can be seen from fig. 7 and 8, the support hinge 2 comprises an annular connection base 21, a support cylinder 22 and three flexible legs 23, wherein the annular connection base 21 is matched with the nested annular connection surface 20 and is connected with the annular connection surface 20 through screws; the three flexible supporting legs 23 are arranged along the radial direction of the annular connecting base 21 and are uniformly distributed along the circumferential direction of the end face of the annular connecting base 21, one ends of the flexible supporting legs 23 are fixed on the annular connecting base 21, and the other ends of the flexible supporting legs 23 are fixed with the side wall of the cylinder body of the supporting cylinder 22. In this embodiment, the flexible leg 23, the annular connection base 21, and the support cylinder 22 are integrally provided.
Each flexible supporting leg is provided with an L-shaped through groove 26, a first longitudinal through groove 24 and a second longitudinal through groove 25 which are parallel to each other, and the length of the vertical part of the L-shaped through groove 26 is equal to the length of the first longitudinal through groove 24 and the length of the second longitudinal through groove 25 and is smaller than the axial height of the flexible supporting leg along the supporting cylinder;
The first longitudinal through groove 24 is arranged downwards along the top end of the flexible supporting leg 23, and the second longitudinal through groove 25 is arranged upwards along the bottom end of the flexible supporting leg 23; the L-shaped through groove 26 is positioned right above the end surface of the annular connecting base 21, and the vertical part of the L-shaped through groove is equal to the second longitudinal through groove in height; here, the top and bottom ends are described with respect to the direction shown in fig. 7, and when the direction of the drawing is changed, the top and bottom ends are also changed with the direction of the drawing.
When the external temperature load is applied or assembly tolerance exists, the transverse part of the L-shaped through groove 26 provides flexibility along the axial direction for the reflector, the vertical part of the L-shaped through groove 26, the first longitudinal through groove 24 and the second longitudinal through groove 25 provide flexibility along the radial direction for the reflector, and the three groups of flexible legs are mutually coordinated, so that the thermal stress and the assembly stress introduced in the assembly process of the mounting plate of the external reflector assembly can be fully released.
Claims (3)
1. The utility model provides a bearing structure of heavy-calibre speculum, includes nested (4) and supports gentle hinge (2), nested (4) outer wall links firmly with the speculum hole, support the one end of gentle hinge (2) with nested (4) fixed connection, the other end and the outside speculum subassembly mounting panel fixed connection of supporting gentle hinge (2), its characterized in that:
The nest (4) comprises a nest body, N sections of grooves (8) with equal radian and equal width and penetrating through the nest (4) in the axial direction are uniformly distributed on the end face of the nest body along the circumferential direction, wherein N is equal to 3;
The distance between the groove (8) and the outer wall of the nest (4) is smaller than the distance between the groove and the inner wall of the nest (4);
a plurality of key grooves (9) which are arranged at equal intervals and are recessed towards the center direction of the nested body are formed along the inner wall of the groove (8), and the key grooves (9) are arranged along the circumferential direction of the nested body and axially penetrate through the nested body; a plurality of glue injection holes (10) which are vertically communicated with the key grooves (9) are formed in the outer side surface of the nested body;
The radian of each groove (8) is 90 degrees, four key grooves (9) are formed in each groove (8) along the inner wall of each groove, each groove (8) corresponds to a2 multiplied by 4 glue injection hole array, and each key groove (9) corresponds to two glue injection holes (10);
During glue injection, an auxiliary glue injection nail (12) is inserted into a key slot (9), a glue injection channel (13) is used for injecting glue inwards by an injector, epoxy resin glue (5) flows into a glue injection hole (10) through an outlet end (14) of the glue injection channel and then enters a gap (15) between a nest and a reflecting mirror, the glue layer is distributed in a discrete glue spot mode by controlling injection pressure and glue injection amount, and a glue spot (16) with a fixed diameter is formed after the glue layer is solidified;
the nested body is adhered to the inner hole of the reflector through epoxy resin glue (5);
the gap between the nested body and the reflecting mirror (1) is smaller than or equal to 0.02mm;
The nest (4) further comprises an annular connecting surface (20) arranged on the end surface of the nest (4);
The support flexible hinge (2) comprises an annular connecting base (21), a support cylinder (22) and three flexible supporting legs (23); the annular connecting base (21) is matched with the annular connecting surface (20) of the nest (4) and is connected with the annular connecting surface (20) through a screw; the three flexible supporting legs (23) are arranged along the radial direction of the annular connecting base (21) and are uniformly distributed along the circumferential direction of the end face of the annular connecting base (21), one end of each flexible supporting leg (23) is fixed on the end face of the annular connecting base (21), and the other end of each flexible supporting leg (23) is fixed with the side wall of the cylinder body of the supporting cylinder (22);
Each flexible supporting leg (23) is provided with an L-shaped through groove (26) and a plurality of mutually parallel longitudinal through grooves, the length of the vertical part of the L-shaped through groove (26) is equal to the length of the longitudinal through groove and is smaller than the axial height of the flexible supporting leg (23) along the supporting cylinder (22), and the vertical part of the L-shaped through groove (26) is parallel to the longitudinal through groove and is perpendicular to the end face of the annular connecting base (21);
The longitudinal through grooves comprise a first longitudinal through groove (24) and a second longitudinal through groove (25), the first longitudinal through groove (24) is arranged downwards along the top end of the flexible supporting leg (23), and the second longitudinal through groove (25) is arranged upwards along the bottom end of the flexible supporting leg (23);
the L-shaped through groove (26) is positioned right above the end surface of the annular connecting base (21), and the vertical part of the L-shaped through groove (26) is equal to the second longitudinal through groove (25) in height.
2. A support structure for a large caliber reflector according to claim 1, wherein:
The material of the nest (4) is iron-nickel alloy; the support flexible hinge (2) is made of TC17.
3. A support assembly for a heavy caliber reflector, characterized by:
The support structure as claimed in claim 1 or 2, further comprising auxiliary glue injection nails (12) with different lengths corresponding to the glue injection holes (10) with different positions and heights, wherein the auxiliary glue injection nails (12) are provided with L-shaped glue injection channels (13); the diameter of the outlet end (14) of the glue injection channel is equal to the diameter of the glue injection hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588812.0A CN108594399B (en) | 2018-06-08 | Supporting structure and supporting assembly of large-caliber reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588812.0A CN108594399B (en) | 2018-06-08 | Supporting structure and supporting assembly of large-caliber reflector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108594399A CN108594399A (en) | 2018-09-28 |
| CN108594399B true CN108594399B (en) | 2024-05-14 |
Family
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