CN112086730A - Pre-buried structure is used in connection - Google Patents
Pre-buried structure is used in connection Download PDFInfo
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- CN112086730A CN112086730A CN202010875829.1A CN202010875829A CN112086730A CN 112086730 A CN112086730 A CN 112086730A CN 202010875829 A CN202010875829 A CN 202010875829A CN 112086730 A CN112086730 A CN 112086730A
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- nut
- embedded structure
- connection according
- screw
- connecting hole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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Abstract
The invention discloses a pre-embedded structure for connection, which comprises an antenna housing and an anti-drop nut, wherein a positioning connecting hole is arranged in the antenna housing, one side of the positioning connecting hole, which is close to the inner surface of the antenna housing, is of an approximate rectangular structure, wherein two short sides are arc surfaces protruding outwards, two long sides are parallel planes, the anti-drop nut is arranged in the positioning connecting hole and comprises a nut end and a screw end, the end surface of the screw end is flush with the outer surface of the radome, the shape of the nut end is the same as the approximate rectangular structure of one side of the positioning connecting hole close to the inner surface of the radome, the end surface of the nut end is at a distance from the inner surface of the radome, and a screw hole is arranged in the anti-drop nut, so that the problems of dropping and rotating of connecting metal parts are solved, the embedded structure can play roles of preventing falling and rotation, and the embedded structure is simple and reliable and is convenient to operate.
Description
Technical Field
The invention relates to the technical field of radar antenna structure design, in particular to a pre-embedded structure for connection.
Background
For parts with disassembly requirements, a mode of using screws and supporting plate nuts (the supporting plate nuts are fixed on relevant structures through rivets) is generally adopted to meet the use and maintenance requirements, but the weight of the product parts is larger, the installation space requirement is larger, and the same is true for composite material parts. In order to save the installation space and reduce the influence of the metal connecting piece on the weight, the embedded mode is a better way. Meanwhile, for a structure with stealth requirements, in order to reduce the influence of surface protrusions on the RCS of the structure, a pre-embedding mode is also a very good mode.
However, when the pre-embedded scheme is adopted, the problems of falling prevention and rotation prevention need to be solved.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a pre-buried structure for connection, which reduces the number of connecting metal parts and solves the problems of falling and rotation.
The technical scheme of the invention is as follows:
an embedded structure for connection comprises an antenna housing (1) and an anti-drop nut (2), a positioning connecting hole is arranged in the antenna housing (1), one side of the positioning connecting hole, which is close to the inner surface of the antenna housing (1), is of an approximate rectangular structure, wherein the two short sides are arc surfaces protruding outwards, the two long sides are parallel planes, the anti-drop nut (2) is arranged in the positioning connecting hole, anticreep nut (2) including nut end (4) and screw rod end (3), the terminal surface and antenna house (1) surface of screw rod end (3) flush, the shape and the location connecting hole of nut end (4) are close to the approximate rectangle structure of antenna house (1) internal surface one side the same, the terminal surface and the antenna house (1) internal surface of nut end (4) have a distance, anticreep nut (2) in have screw hole (5).
Further, the screw is arranged in the screw hole (5).
Furthermore, the inner surface of the screw hole (5) is provided with an internal thread which is matched with the external thread of the screw.
Furthermore, a layer of resin or adhesive is coated on the contact surface of the anti-falling nut (2) and the positioning connecting hole.
Further, the antenna housing (1) is formed by laying a plurality of skin fabrics.
Further, when the radome (1) is laid, a small amount of skin fabric is laid on a forming grinding tool, then positioning connecting holes are formed in the laid small amount of skin fabric, the anti-falling nuts are placed in the positioning connecting holes, then the rest of skin fabric is laid continuously and compacted, and then the anti-falling nuts (2) are placed into an oven or an autoclave together with the radome (1) for curing.
Further, the solidification environment of the anti-drop nut (2) and the antenna housing (1) is as follows: the vacuum degree is not less than 0.1MPa, the curing temperature is 150 ℃, the curing pressure is 0.3MPa, the curing pressure and the curing temperature last for 2 hours, and the compaction time of the covering fabric is not less than 30 min.
Further, the distance between the end face of the nut end (4) and the inner surface of the antenna housing (1) is 1mm, the wall thickness of the nut end (4) is 3-5mm, and the wall thickness of the screw rod end (3) is 1-2 mm.
Further, the anti-drop nut (2) is made of a metal material.
Further, the anti-drop nut (2) is made of stainless steel materials.
The invention has the beneficial effects that:
the invention provides a pre-buried structure for connection, which not only reduces the problem that a connecting metal piece falls off and rotates, but also has the functions of preventing falling off and rotation.
Drawings
FIG. 1 is a side view of the structure of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
wherein: 1. the antenna housing comprises an antenna housing body, 2 parts of an anti-falling nut, 3 parts of a screw rod end, 4 parts of a screw cap end, 5 parts of a screw hole.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:
as shown in fig. 1 and 2, a pre-buried structure for connection comprises an antenna housing 1 and an anti-drop nut 2, wherein a plurality of positioning connection holes are arranged in the antenna housing 1, the positioning connection holes are arranged on the surface of the antenna housing 1 to provide a plurality of fixing hole sites for fixing the antenna housing 1, one side of the positioning connection holes close to the inner surface of the antenna housing 1 is of an approximate rectangular structure, two short sides of the positioning connection holes are arc surfaces protruding outwards, two long sides of the positioning connection holes are parallel planes, the anti-drop nut 2 and a screw with the same shape are designed and matched in the structure, the anti-drop nut 2 is arranged in the positioning connection holes, when the antenna is assembled and disassembled, a disassembling tool is used for clamping the parallel planes of the two long sides, so that clamping can be ensured not to slide, the anti-drop nut 2 is prevented from rotating due to the screwing torque of the screw when the antenna is used, the terminal surface of screw end 3 flushes with 1 surface of radome, and the shape of nut end 4 is the same with the approximate rectangle structure that the pilot hole is close to 1 internal surface one side of radome, and the terminal surface of nut end 4 has a distance with 1 internal surface of radome, makes the terminal surface of covering screw end 4 completely of covering skin, anticreep nut 2 in have screw hole 5 for set screw, screw hole match M5 or M6's screw.
Wherein, 5 internal surfaces of screw hole are provided with the internal thread, match with the screw external screw thread, and easy to assemble and dismantlement, the distance between the terminal surface of nut end 4 and 1 internal surface of antenna house is 0.9-1.mm, and preferably 1mm makes the terminal surface of nut end 4 be located inside the antenna house, is convenient for can cover anticreep nut 2 completely when laying antenna house 1, makes anticreep nut 2 pre-buried in antenna house 1 completely.
In this embodiment, the anti-drop nut 2 is made of a metal material, preferably a stainless steel material, which can ensure that the anti-drop nut 2 has good mechanical strength and ensures the firmness of the embedded structure, and meanwhile, the stainless steel material has a large linear expansion coefficient and changes along with the change of temperature, so that the anti-drop nut 2 can adapt to working environments with different temperatures,
as shown in figure 2, the thickness of the nut end 4 of the anti-drop nut 2 is larger than that of the screw rod 3, the wall thickness of the nut end 4 of the anti-drop nut 2 is 3-5mm, the wall thickness of the screw rod end 3 is 1-2mm, and different designs of the wall thicknesses can not only ensure the mechanical strength of the nut end 4 and the screw rod end 3, but also reduce the weight of the anti-drop nut 2, and are beneficial to reducing the weight of the radome 1 and even an airplane.
The contact surface of the anti-drop nut 2 and the positioning connecting hole is coated with a layer of resin or adhesive, the resin is one or more of phenolic resin, epoxy resin and cyanate resin, and the firm connection of the anti-drop nut 2 and the positioning connecting hole can be ensured.
In the embodiment, the radome 1 is formed by laying a plurality of layers of skin fabrics, during molding, when the radome 1 is laid, a small amount of skin fabrics are firstly laid on a molding grinding tool, then positioning connection holes are formed in the laid small amount of skin fabrics by using a special hole-opening tool, the anti-drop nut 2 is placed in the positioning connection holes, then the rest of skin fabrics are continuously laid, the anti-drop nut 2 is completely covered, a distance of about 1mm is kept between the end surface of the nut end 4 of the anti-drop nut 2 and the inner surface of the radome 1, then the skin fabrics are compacted, the anti-drop nut 2 is placed into an oven or a hot-pressing tank together with the radome 1 for curing, the oven or the hot-pressing tank is in a vacuum environment, the vacuum degree is not less than 0.1MPa, the curing temperature is 150 ℃, the curing pressure is 0.3MPa, the curing pressure and the curing temperature last for 2 hours, the compacting time of the, and finally obtaining the cured embedded structure.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (10)
1. The utility model provides a connection is with pre-buried structure which characterized in that: including antenna house (1) and anticreep nut (2), antenna house (1) inside be provided with the location connecting hole, the location connecting hole be close to antenna house (1) internal surface one side for approximate rectangle structure, wherein two short avris are outside outstanding arcwall face, two long avris are parallel plane, anticreep nut (2) set up the location connecting hole in, anticreep nut (2) including nut end (4) and screw rod end (3), the terminal surface and antenna house (1) surface of screw rod end (3) flush, the shape and the location connecting hole of nut end (4) are close to the approximate rectangle structure of antenna house (1) internal surface one side the same, the terminal surface and antenna house (1) internal surface of nut end (4) have a distance, anticreep nut (2) in have screw hole (5).
2. The embedded structure for connection according to claim 1, characterized in that: the screw is arranged in the screw hole (5).
3. The embedded structure for connection according to claim 2, characterized in that: the inner surface of the screw hole (5) is provided with an internal thread which is matched with the external thread of the screw.
4. The embedded structure for connection according to claim 1, characterized in that: and a layer of resin or adhesive is coated on the contact surface of the anti-falling nut (2) and the positioning connecting hole.
5. The embedded structure for connection according to claim 1, characterized in that: the antenna housing (1) is formed by laying a plurality of skin fabrics.
6. The embedded structure for connection according to claim 5, wherein: when the radome (1) is laid, a small amount of skin fabric is laid on a forming grinding tool, then positioning connecting holes are formed in the laid small amount of skin fabric, the anti-falling nuts are placed in the positioning connecting holes, then the rest of the skin fabric is laid continuously and compacted, and then the anti-falling nuts (2) are placed into an oven or an autoclave together with the radome (1) for curing.
7. The embedded structure for connection according to claim 6, wherein: the anti-drop nut (2) and the antenna housing (1) are solidified in the environment that: the vacuum degree is not less than 0.1MPa, the curing temperature is 150 ℃, the curing pressure is 0.3MPa, the curing pressure and the curing temperature last for 2 hours, and the compaction time of the covering fabric is not less than 30 min.
8. The embedded structure for connection according to claim 1, characterized in that: the distance between the end face of the nut end (4) and the inner surface of the antenna housing (1) is 1mm, the wall thickness of the nut end (4) is 3-5mm, and the wall thickness of the screw rod end (3) is 1-2 mm.
9. The embedded structure for connection according to claim 1, characterized in that: the anti-drop nut (2) is made of metal materials.
10. The embedded structure for connection according to claim 9, wherein: the anti-falling nut (2) is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875829.1A CN112086730A (en) | 2020-08-26 | 2020-08-26 | Pre-buried structure is used in connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875829.1A CN112086730A (en) | 2020-08-26 | 2020-08-26 | Pre-buried structure is used in connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112086730A true CN112086730A (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010875829.1A Pending CN112086730A (en) | 2020-08-26 | 2020-08-26 | Pre-buried structure is used in connection |
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| CN (1) | CN112086730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228172A (en) * | 2021-11-10 | 2022-03-25 | 天津爱思达航天科技有限公司 | Satellite plate machining tool and machining method |
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| CN107010243A (en) * | 2017-03-20 | 2017-08-04 | 成都飞机工业（集团）有限责任公司 | A kind of installation method for being precisely controlled ailhead concavo-convex amount |
| US20170309996A1 (en) * | 2016-04-20 | 2017-10-26 | The United States Of America As Represented By The Secretary Of The Navy | Advanced radome designs with tailorable reinforcement and methods of manufacturing the same |
| CN109950679A (en) * | 2019-03-13 | 2019-06-28 | 中国电子科技集团公司第三十八研究所 | A kind of split type antenna house connection structure and antenna house producing device |
| CN110001181A (en) * | 2019-04-04 | 2019-07-12 | 北京卫星制造厂有限公司 | The preparation method of recoverable airship solar heat protection hood structure integrated with carrying |
| CN110350317A (en) * | 2019-07-15 | 2019-10-18 | 航天特种材料及工艺技术研究所 | A kind of 6G antenna house and preparation method thereof suitable for Terahertz antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228172A (en) * | 2021-11-10 | 2022-03-25 | 天津爱思达航天科技有限公司 | Satellite plate machining tool and machining method |
| CN114228172B (en) * | 2021-11-10 | 2023-06-20 | 天津爱思达航天科技有限公司 | Satellite plate machining tool and machining method |
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