CN220526081U - Super-hemispherical airtight spherical cover assembly of airborne photoelectric equipment - Google Patents
Super-hemispherical airtight spherical cover assembly of airborne photoelectric equipment Download PDFInfo
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- CN220526081U CN220526081U CN202322292295.1U CN202322292295U CN220526081U CN 220526081 U CN220526081 U CN 220526081U CN 202322292295 U CN202322292295 U CN 202322292295U CN 220526081 U CN220526081 U CN 220526081U
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- 238000007789 sealing Methods 0.000 claims abstract description 49
- 230000005693 optoelectronics Effects 0.000 claims description 13
- 238000007639 printing Methods 0.000 claims description 12
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- 210000002421 cell wall Anatomy 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052594 sapphire Inorganic materials 0.000 claims description 5
- 239000010980 sapphire Substances 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims description 5
- 239000000565 sealant Substances 0.000 claims description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
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- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
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- 238000009833 condensation Methods 0.000 description 2
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- 238000003384 imaging method Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses an airborne photoelectric equipment hyper-hemispherical airtight spherical cover assembly, and relates to the technical field of aerospace remote sensing. The utility model comprises a light-transmitting spherical cover and a spherical cover fixing device, wherein the bottom of the light-transmitting spherical cover is provided with an opening, the spherical cover fixing device comprises a circular base, the base is connected with an airborne device through screws, the upper surface of the base is provided with a mounting groove corresponding to the opening of the light-transmitting spherical cover, an inner pressing ring is further arranged between the inner surface of the light-transmitting spherical cover and the wall of an inner ring of the mounting groove, a tenon is arranged on the inner pressing ring, the mounting groove is provided with a mortise, the tenon is embedded into the mortise, the inner pressing ring is connected with the base through screws in a reinforcing mode, the outer ring walls of the mounting groove and the inner pressing ring are respectively provided with a sealing groove, the edge of each sealing groove is provided with a round angle, and each sealing groove is internally provided with a sealing ring. The utility model solves the problem that the wind resistance moment, temperature change, water vapor pollution and other interference factors of the external environment of the airborne platform influence the performance of the internal components of the equipment, and the hyper-hemispherical spherical cover is not easy to install and fix.
Description
Technical Field
The utility model relates to the technical field of aerospace remote sensing, in particular to an airborne photoelectric equipment hyper-hemispherical airtight spherical cover assembly.
Background
The airborne photoelectric equipment refers to an aerial remote sensor for photoelectric observation, measurement, communication and the like, comprises task loads applicable to different environments such as visible light, infrared, laser and the like, has the characteristics of flexibility, strong adaptability, real-time accuracy and the like, and is widely applied to the fields of geology, mapping and the like.
The airborne platform has larger wind resistance moment, temperature change, machine body vibration and other environmental disturbance in the flight process, which can cause serious interference to components of an internal photoelectric system and influence the normal work of the components such as optical elements, electronic devices, multi-dimensional turntables and the like in the equipment.
In order to protect the airborne photoelectric equipment and prevent and reduce the influence of the external environment on the internal components of the airborne photoelectric equipment, a reasonable optical window must be designed at the outermost end of the equipment; meanwhile, in order to reduce the influence of the optical window on the link power, the optical window needs to have high transmittance for the laser wavelength adopted by the optoelectronic device. For special opto-electronic devices, in order to reduce the impact of the deflection of the light rays through the optical window on the system and to facilitate the compensation thereof by the optical system, the optical window is usually designed in the form of a concentric spherical cap, and the center of the spherical cap needs to coincide with the emission or reception center of the optical system. When the equipment needs a large field of view, the transmitting or receiving center of the equipment needs to be positioned at a higher position in the equipment, and the shape of the spherical cover exceeds that of a hemisphere, so that the processing and mounting difficulty of the spherical cover is greatly increased.
In addition, the altitude of the equipment of the airborne platform in the ground and in the flying state is greatly changed, the temperature is different, and the condensation phenomenon of water vapor in the atmosphere can occur. Moisture condensation on the optical components can have a significant impact on the optical performance of the optoelectronic system.
In view of the foregoing, it is desirable to provide an airtight hyper-hemispherical airtight spherical cap assembly for an airborne optoelectronic device in a large field of view imaging or omnidirectional scanning mode of operation.
Disclosure of Invention
In view of the above, the utility model provides a super-hemispherical airtight spherical cover assembly of an airborne photoelectric device, which meets the requirement of a large view field of an optical window of the airborne photoelectric device, and solves the problems that the performance of internal components of the device is affected by disturbance factors such as wind resistance moment, temperature change, water vapor pollution and the like of the external environment of the airborne platform and the super-hemispherical spherical cover is difficult to install and fix.
In order to achieve the above purpose, the utility model adopts the following scheme:
the utility model provides an airborne photoelectric equipment super hemisphere airtight spherical cap subassembly, includes printing opacity spherical cap 1 and spherical cap fixing device, and printing opacity spherical cap 1 bottom is equipped with the opening, spherical cap fixing device includes annular base 3 and interior clamping ring 2, the upper surface of base 3 is equipped with the mounting groove corresponding with printing opacity spherical cap 1's opening, and the outer lane cell wall of mounting groove is the inclined plane structure, and the outer lane cell wall of mounting groove corresponds with printing opacity spherical cap open-ended surface, interior clamping ring 2 is located between printing opacity spherical cap 1 and the inner lane cell wall of mounting groove, and interior clamping ring 2's outer lane is the inclined plane structure, and interior clamping ring 2's outer lane corresponds with printing opacity spherical cap 1 open-ended internal surface;
the upper end of the wall of the inner ring groove of the mounting groove is provided with a plurality of mortise holes 3-3, and the side surface of the inner ring of the inner pressing ring 2 is provided with tenons 2-2 corresponding to the mortise holes 3-3 of the mounting groove; the bottom surface of the tenon 2-2 is provided with a threaded hole, and the base 3 is provided with a smooth through hole 3-2 corresponding to the threaded hole on the tenon 2-2; the tenon 2-2 is embedded into the mortise 3-3, and the inner pressing ring 2 and the base 3 are connected through screws penetrating through the smooth through holes 3-2 and threaded holes in the bottom surface of the tenon 2-2.
Further, the light-transmitting spherical cover 1 is in a hyper-hemispherical shape, the angle of view is 240-250 degrees, and the inner surface and the outer surface of the light-transmitting spherical cover 1 are plated with antireflection films with light transmittance of 85-95%.
Further, a threaded hole is formed in the peripheral area of the base 3, and the base 3 is connected with the airborne platform through screws.
Further, a first sealing groove 3-1 is formed in the wall of the outer ring groove of the mounting groove, a second sealing groove 2-1 is formed in the outer ring of the inner pressure ring 2, round corners 3-5 are formed in the first sealing groove 3-1 and the second sealing groove 2-1, and the size range of the round corners 3-5 is 0.1-0.8mm; an O-shaped sealing ring 4 is arranged in each of the first sealing groove 3-1 and the second sealing groove 2-1, and the two O-shaped sealing rings 4 are positioned at the inner side and the outer side of the opening of the transparent spherical cover 1.
Further, the contact surfaces of the two O-shaped sealing rings 4 and the light-transmitting spherical cover 1 are coated with sealant.
Further, the inner pressing ring 2 is of a three-section splicing structure, and the inner pressing ring 2 is arranged in the light-transmitting spherical cover 1 in a segmented mode and then is bonded and spliced.
Further, the inside of the light-transmitting spherical cover 1 is filled with nitrogen.
Further, the light-transmitting spherical cover 1 is made of sapphire or K9 glass, and the inner pressing ring 2 and the base 3 are made of titanium alloy or aluminum alloy.
By adopting the technical scheme, compared with the background technology, the utility model has the following beneficial effects:
1. the light-transmitting spherical cover adopted by the utility model has a large field angle of 240-250 degrees in the hyper-hemisphere, and can well meet the requirement of large-field light beam scanning of photoelectric equipment. The inner surface and the outer surface of the spherical cover are coincident with the spherical center, uniform in thickness, small in concentricity error and high in transmittance, so that the photoelectric equipment can be protected from the influence of external environment, the influence on the wave front shape of the light beam is small, and the aberration compensation is conveniently carried out on the optical design.
2. The sealing grooves arranged at the contact surfaces of the inner pressing ring and the base and the light-transmitting spherical cover in the hyper-hemispherical airtight spherical cover assembly are used for installing the sealing rings, the sealing glue is smeared and the pretightening force of the connecting screw is matched to achieve the effect of sealing the inside of the spherical cover assembly, and when the hyper-hemispherical airtight spherical cover assembly is used, nitrogen is filled in advance to discharge the inside vapor, so that the problem that the inside components are polluted by the vapor is solved.
3. The inner pressing ring in the hyper-hemispherical airtight spherical cover assembly adopts a three-section separation structure, can be conveniently plugged into the light-transmitting spherical cover, and is matched with the tenon-and-mortise structures of the inner pressing ring and the base and the high rigidity of the metal piece, so that the light-transmitting spherical cover can be well fixed on the base, and the problem that the hyper-hemispherical airtight spherical cover is difficult to install and fix is solved.
4. The spherical cover in the hyper-hemispherical airtight spherical cover component disclosed by the utility model is made of glass materials such as sapphire and K9, the inner pressing ring and the base are made of titanium alloy, aluminum alloy materials and the like, so that the hyper-hemispherical airtight spherical cover component has good mechanical properties and can be fully suitable for various working environments.
5. The hyper-hemispherical airtight spherical cover component has the advantages that the number of parts is small, and the debugging and assembling difficulty of the spherical cover component is reduced.
Drawings
FIG. 1 is a schematic diagram of an airborne optoelectronic device hyper-hemispherical hermetic spherical cap assembly of the present utility model;
FIG. 2 is a cross-sectional view of an airborne optoelectronic device hyper-hemispherical hermetic spherical cap assembly of the present utility model;
FIG. 3 is a diagram showing the structure of a seal ring in a hyper-hemispherical airtight spherical cap assembly of an airborne photoelectric device;
FIG. 4 is an enlarged view of a portion of a hyper-hemispherical hermetic spherical cap assembly of an on-board optoelectronic device in accordance with the present utility model;
FIG. 5 is a diagram of the inner race in the hyper-hemispherical airtight spherical cap assembly of the airborne optoelectronic device of the present utility model;
FIG. 6 is a block diagram of the base of the hyper-hemispherical hermetic spherical cap assembly of the airborne optoelectronic device of the present utility model;
FIG. 7 is an enlarged view of a portion of a seal groove in a pressure ring and base within an airborne optoelectronic device hyper-hemispherical hermetic spherical cap assembly of the present utility model;
the reference numerals are specifically as follows:
1. the light-transmitting spherical cover comprises a light-transmitting spherical cover body, an inner pressing ring, a second sealing groove, a tenon, a base, a first sealing groove, a smooth through hole, a mortise, a mounting groove, a round angle and a sealing ring, wherein the light-transmitting spherical cover body comprises the following components, the inner pressing ring, the second sealing groove, the tenon, the base, the first sealing groove, the smooth through hole, the mortise, the mounting groove and the sealing ring.
Detailed Description
The utility model is described in further detail below with reference to the drawings and to specific embodiments.
As shown in fig. 1 and 2, the ultra-hemispherical airtight spherical cover component of the airborne photoelectric equipment comprises a light-transmitting spherical cover 1 and a spherical cover fixing device, wherein an opening is formed in the bottom of the light-transmitting spherical cover 1, the spherical cover fixing device comprises a circular base 3 and an inner pressing ring 2, as shown in fig. 6, an installation groove corresponding to the opening of the light-transmitting spherical cover 1 is formed in the upper surface of the base 3, the wall of an outer ring of the installation groove is of an inclined surface structure, the wall of the outer ring of the installation groove corresponds to the outer surface of the opening of the light-transmitting spherical cover, the inner pressing ring 2 is positioned between the light-transmitting spherical cover 1 and the wall of the inner ring of the installation groove, the outer ring of the inner pressing ring 2 is of an inclined surface structure, and the outer ring of the inner pressing ring 2 corresponds to the inner surface of the opening of the light-transmitting spherical cover 1;
as shown in fig. 4, 5 and 6, the upper end of the wall of the inner ring groove of the mounting groove is provided with a plurality of mortise holes 3-3, and the side surface of the inner ring of the inner pressing ring 2 is provided with a tenon 2-2 corresponding to the mortise holes 3-3 of the mounting groove; the bottom surface of the tenon 2-2 is provided with a threaded hole, and the base 3 is provided with a smooth through hole 3-2 corresponding to the threaded hole on the tenon 2-2; the tenon 2-2 is embedded into the mortise 3-3, and the inner pressing ring 2 and the base 3 are connected through screws penetrating through the smooth through holes 3-2 and threaded holes in the bottom surface of the tenon 2-2.
Further, the light-transmitting spherical cover 1 is in a hyper-hemispherical shape, the angle of view is 240-250 degrees, and the inner surface and the outer surface of the light-transmitting spherical cover 1 are plated with antireflection films with light transmittance of 85-95%.
Further, as shown in fig. 4, a threaded hole is formed in the peripheral area of the base 3, and the base 3 is connected with the airborne platform through screws.
Further, as shown in fig. 3 and 4, a first sealing groove 3-1 is arranged on the wall of the outer ring of the mounting groove, a second sealing groove 2-1 is arranged on the outer ring of the inner pressure ring 2, as shown in fig. 7, round corners 3-5 are arranged on the first sealing groove 3-1 and the second sealing groove 2-1, and the size range of the round corners 3-5 is 0.1-0.8mm; an O-shaped sealing ring 4 is arranged in each of the first sealing groove 3-1 and the second sealing groove 2-1, and the two O-shaped sealing rings 4 are positioned at the inner side and the outer side of the opening of the transparent spherical cover 1.
Specifically, the design of fillet avoids stress concentration and edge fish tail sealing washer of structure. Meanwhile, the high rigidity and high strength attribute of the material and the buffer effect of the sealing glue and the rubber sealing ring between the inner pressing ring and the base and the ball cover ensure the strength and anti-interference characteristic of the structure, and the sealing glue is smeared at the position where the two O-shaped sealing rings are attached to the light-transmitting ball cover, so that the fixed connection between the light-transmitting ball cover and the base is further enhanced.
Further, the contact surfaces of the two O-shaped sealing rings 4 and the light-transmitting spherical cover 1 are coated with sealant.
In particular, the sealant may further eliminate gaps between the contact surfaces.
Further, the inner pressing ring 2 is of a three-section splicing structure, and the inner pressing ring 2 is arranged in the light-transmitting spherical cover 1 in a segmented mode and then is bonded and spliced.
Further, the inside of the light-transmitting spherical cover is filled with nitrogen.
Specifically, the problem that internal components are polluted by water vapor is solved by filling nitrogen.
Further, the light-transmitting spherical cover 1 is made of sapphire or K9 glass, and the inner pressing ring 2 and the base 3 are made of titanium alloy or aluminum alloy.
Specifically, the light-transmitting spherical cover is made of high-strength glass materials such as sapphire, K9 and the like, and is in a super-hemispherical shape; the inner pressing ring and the base are both made of high specific stiffness materials such as titanium alloy and aluminum alloy, and the light-transmitting spherical cover is firmly fixed in the base by means of the high specific stiffness characteristic of the metal material and the pretightening force of the connecting screw.
In a word, the utility model realizes the fastening installation of the hyper-hemispherical spherical cover through the mutual matching and screw connection of the inner pressing ring and the base, and utilizes the sealing ring and the sealing glue of the contact surface between the inner pressing ring and the base and the spherical cover to realize the gas sealing in the spherical cover assembly, thereby solving the difficult problem that the hyper-hemispherical spherical cover is difficult to install and fix, and protecting the internal components of the airborne photoelectric equipment from the influence of factors such as the air flow interference of the external environment, the water vapor pollution and the like.
Finally, it should be noted that: the foregoing is merely illustrative of the preferred embodiments of the present utility model and the utility model is not limited thereto, but is intended to cover modifications, equivalents, improvements and the like without departing from the spirit and scope of the present utility model as defined by the following claims.
Claims (8)
1. The utility model provides an airborne photoelectric equipment super hemisphere airtight spherical cap subassembly, includes printing opacity spherical cap (1) and spherical cap fixing device, is equipped with the opening in printing opacity spherical cap (1) bottom, its characterized in that, spherical cap fixing device includes annular base (3) and interior pressure circle (2), the upper surface of base (3) is equipped with the mounting groove corresponding with the opening of printing opacity spherical cap (1), and the outer lane cell wall of mounting groove is the inclined plane structure, and the outer lane cell wall of mounting groove corresponds with the open-ended surface of printing opacity spherical cap, interior pressure circle (2) are located between printing opacity spherical cap (1) and the inner ring cell wall of mounting groove, and interior pressure circle (2) outer lane is the inclined plane structure, and interior pressure circle (2) outer lane and printing opacity spherical cap (1) open-ended internal surface correspond;
the upper end of the wall of the inner ring groove of the mounting groove is provided with a plurality of mortise holes (3-3), and the side surface of the inner ring (2) is provided with tenons (2-2) corresponding to the mortise holes (3-3) of the mounting groove; the bottom surface of the tenon (2-2) is provided with a threaded hole, and the base (3) is provided with a smooth through hole (3-2) corresponding to the threaded hole on the tenon (2-2); the tenon (2-2) is embedded into the mortise (3-3), and the inner pressing ring (2) is connected with the base (3) through a screw penetrating through the smooth through hole (3-2) and a threaded hole on the bottom surface of the tenon (2-2).
2. The ultra-hemispherical airtight spherical cover assembly of the airborne photoelectric equipment, according to claim 1, is characterized in that the light-transmitting spherical cover (1) is in an ultra-hemispherical shape, the angle of view is 240-250 degrees, and the inner surface and the outer surface of the light-transmitting spherical cover (1) are coated with antireflection films with light transmittance of 85-95%.
3. The ultra-hemispherical airtight spherical cover assembly of the airborne optoelectronic device according to claim 1, wherein the peripheral area of the base (3) is provided with threaded holes, and the base (3) is connected with the airborne platform through screws.
4. The ultra-hemispherical airtight spherical cover assembly of the airborne photoelectric equipment, according to claim 1, is characterized in that a first sealing groove (3-1) is formed in the outer ring groove wall of the mounting groove, a second sealing groove (2-1) is formed in the outer ring of the inner pressure ring (2), round corners (3-5) are formed in each of the first sealing groove (3-1) and the second sealing groove (2-1), and the size range of each round corner (3-5) is 0.1-0.8mm; an O-shaped sealing ring (4) is arranged in each of the first sealing groove (3-1) and the second sealing groove (2-1), and the two O-shaped sealing rings (4) are positioned at the inner side and the outer side of the opening of the transparent spherical cover (1).
5. The ultra-hemispherical airtight spherical cover assembly of the airborne optoelectronic device according to claim 4, wherein the contact surface of the two O-shaped sealing rings (4) and the light-transmitting spherical cover (1) is coated with sealant.
6. The super-hemispherical airtight spherical cover assembly of the airborne photoelectric equipment, according to claim 1, is characterized in that the inner pressing ring (2) is of a three-section splicing structure, and the inner pressing ring (2) is placed in the light-transmitting spherical cover (1) in a segmented mode and then is bonded and spliced.
7. An airborne optoelectronic device hyper-hemispherical hermetic spherical cap assembly according to claim 1, characterized in that the interior of the light-transmitting spherical cap (1) is filled with nitrogen.
8. The ultra-hemispherical airtight spherical cover assembly of the airborne photoelectric equipment, according to claim 1, is characterized in that the light-transmitting spherical cover (1) is made of sapphire or K9 glass, and the inner pressing ring (2) and the base (3) are made of titanium alloy or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292295.1U CN220526081U (en) | 2023-08-25 | 2023-08-25 | Super-hemispherical airtight spherical cover assembly of airborne photoelectric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292295.1U CN220526081U (en) | 2023-08-25 | 2023-08-25 | Super-hemispherical airtight spherical cover assembly of airborne photoelectric equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220526081U true CN220526081U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322292295.1U Active CN220526081U (en) | 2023-08-25 | 2023-08-25 | Super-hemispherical airtight spherical cover assembly of airborne photoelectric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220526081U (en) |
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2023
- 2023-08-25 CN CN202322292295.1U patent/CN220526081U/en active Active
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