Radome convenient to disassemble and assemble

Abstract

The antenna housing comprises a housing body, a connecting flange is fixed at the bottom of the housing body, a missile head is detachably fixed at the bottom of the connecting flange, an air pressure balance bin is arranged in the connecting flange, and annular pistons are symmetrically connected in the air pressure balance bin in a sliding mode. A plurality of second air holes are evenly formed in the positions, corresponding to the air pressure balance bin, of the top of the connecting flange, the second air holes are located in the cover body and connected with the air pressure balance bin, and a first air hole is formed in one side of the bottom of the connecting flange and connected with the air pressure balance bin. According to the antenna housing convenient to disassemble and assemble provided by the utility model, air enters the air pressure balance bin, and the annular piston moves towards the direction close to a missile head under the action of pressure, so that the pressure in the housing body in high and low temperature environments is balanced; and the air tightness and the water tightness of the cover body can be effectively ensured under the action of the annular piston.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna covers, in particular to an antenna cover which is easy to disassemble and assemble. Background Art

[0002] The radome is an electromagnetic transparent window that ensures the normal operation of the radar antenna. It is also called an electromagnetic window. It is a structure that protects the antenna system from the external environment. It has good electromagnetic wave penetration characteristics in electrical performance and can withstand the harsh external environment in mechanical performance. Outdoor antennas are usually placed in the open air and are directly attacked by natural storms, ice and snow, dust and solar radiation, which reduces the antenna accuracy, shortens its life and has poor working reliability. It is used to protect the antenna or the entire microwave system from the external harmful environment and is generally made of natural or artificial dielectric materials.

[0003] For example, an antenna cover with publication number CN212542687U includes a cover body and a flange, the cover body includes a cover body end and a connecting end, the connecting end is arranged at the bottom end of the cover body, the cover body end is integrally connected to the connecting end, the cover body is connected to the flange through the connecting end, the cover body end of the cover body is a free end, an antenna chamber is arranged inside the cover body, which can accommodate an antenna assembly, the antenna cover is made of glass fiber composite material, and the cover body and the flange are integrally formed. The utility model improves the structure of the antenna cover and uses an antenna cover integrally formed with glass fiber composite material. Compared with the prior art, the problem of cracking of the cover body and the flange due to mismatch of thermal expansion coefficients is avoided. The one-piece molded antenna cover avoids the situation of interface connection of different materials, has higher overall strength, and has the characteristics of light weight, high specific strength and specific stiffness.

[0004] Based on the above, it can be seen that the following technical problems exist in the prior art: when facing high and low temperature shocks, the existing antenna cover may be affected by temperature changes, causing the air inside to expand or contract. This temperature change may cause the air holes on the antenna cover to be unable to effectively prevent moisture from entering the cover, resulting in poor air tightness and water tightness of the antenna cover. In order to solve the problems existing in the prior art, the present application proposes a antenna cover that is easy to disassemble and assemble. Utility Model Content

[0005] Based on this, it is necessary to provide an antenna cover that is easy to disassemble and assemble to address the above-mentioned technical problems. When gas enters the interior of the air pressure balance chamber, the annular piston will move toward the direction close to the missile head under the action of pressure. Conversely, when the temperature of the air inside the cover decreases, a negative pressure environment will be formed inside the cover, and the annular piston will move away from the missile head, thereby balancing the pressure inside the cover in high and low temperature environments. Under the action of the annular piston, the air tightness and water tightness of the cover can be effectively guaranteed.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A antenna cover that is easy to disassemble and assemble specifically includes: a cover body, a connecting flange is fixed to the bottom of the cover body, the bottom of the connecting flange is detachably connected to a missile warhead, an air pressure balance chamber is provided inside the connecting flange, an annular piston is symmetrically and slidably connected inside the air pressure balance chamber, a plurality of second air holes are evenly distributed on the top of the connecting flange and located at positions corresponding to the air pressure balance chambers, the second air holes are located inside the cover body and connected to the air pressure balance chamber, a first air hole is provided on one side of the bottom of the connecting flange, and the first air hole is connected to the air pressure balance chamber.

[0008] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, the air pressure balance chamber is slidably connected to the inside with a connecting ring, and the two annular pistons are respectively fixed to the top and bottom of the connecting ring.

[0009] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, there is a gap fit between the connecting ring and the air pressure balance chamber, and there is an interference fit between the annular piston and the air pressure balance chamber.

[0010] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, a connecting seat is fixed on the top of the missile warhead, and threads are provided on the inner side of the air pressure balance chamber and the outer side of the connecting seat, and the outer side of the connecting seat is threadedly connected to the inner side of the air pressure balance chamber.

[0011] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, a second sealing gasket is provided at the top of the missile warhead and located on the outside of the connecting seat, and a first sealing gasket is provided at the top of the inner side of the air pressure balance chamber and located directly above the connecting seat.

[0012] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, an I-shaped support frame is fixed inside the second sealing gasket and the first sealing gasket.

[0013] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, the first sealing gasket and the second sealing gasket are both made of perfluororubber.

[0014] As a preferred embodiment of the antenna cover that is easy to disassemble and assemble provided by the utility model, the material of the I-shaped support frame is polyether ether ketone (PEEK).

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. When the gas enters the air pressure balance chamber, the annular piston will move towards the missile head under the action of pressure. On the contrary, when the temperature of the air inside the cover decreases, a negative pressure environment will be formed inside the cover, and the annular piston will move away from the missile head to balance the pressure inside the cover under high and low temperature environments. Then, under the action of the annular piston, the air tightness and water tightness of the cover can be effectively guaranteed.

[0017] 2. The threaded connection facilitates disassembly and assembly between the cover body and the missile head. The structure is simple and reliable, and is easy to process and assemble. It can keep the joints between the cover body, the missile head and the connecting flange smooth, which is beneficial to reducing wind resistance during flight. The first sealing gasket and the second sealing gasket are used to seal between the connecting flange and the missile head, which makes up for the defect of insufficient sealing caused by the threaded connection between the missile head and the connecting flange, and improves the sealing performance of the structure. The I-shaped support frame is used to support the first sealing gasket and the second sealing gasket to avoid excessive deformation of the first sealing gasket and the second sealing gasket, thereby further improving the sealing performance of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure inside the cover body, missile head and connecting flange of the utility model;

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the decomposed structure;

[0022] Figure 4 It is a schematic diagram of the structure of the first sealing gasket of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the annular piston and the connecting ring of the utility model.

[0024] The markings in the figure are as follows:

[0025] 1. Cover body; 2. Missile head; 3. Connecting flange; 4. First air vent; 5. Air pressure balance chamber; 6. Second air vent; 7. First sealing gasket; 8. Second sealing gasket; 9. Connecting seat; 10. Connecting ring; 11. Annular piston; 12. I-shaped support frame. DETAILED DESCRIPTION

[0026] Not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present utility model.

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0029] Example 1

[0030] Please refer to Figure 1-4 ,

[0031] The invention comprises a cover body 1, a connecting flange 3 is fixed to the bottom of the cover body 1, the bottom of the connecting flange 3 is detachably connected to the missile head 2, an air pressure balance chamber 5 is provided inside the connecting flange 3, an annular piston 11 is symmetrically slidably connected inside the air pressure balance chamber 5, the annular piston 11, the first sealing gasket 7 and the second sealing gasket 8 are all made of perfluororubber, which refers to a terpolymer of perfluoromethyl vinyl ether, tetrafluoroene and perfluoroene ether, which has the characteristic of high temperature resistance and can maintain stable performance at a temperature of 200 degrees, a plurality of second air holes 6 are evenly distributed on the top of the connecting flange 3 and located at the position corresponding to the air pressure balance chamber 5, the second air holes 6 are located inside the cover body 1 and connected to the air pressure balance chamber 5, a first air hole 4 is provided on one side of the bottom of the connecting flange 3, and the first air hole 4 It is connected to the air pressure balance chamber 5, and is used to communicate the air inside the cover body 1 with the air pressure balance chamber 5 through the second air vent 6, and is used to communicate the outside air with the air pressure balance chamber 5 through the first air vent 4. Specifically, when the air inside the cover body 1 expands at high temperature, a high-pressure environment is formed inside the cover body 1, and the gas enters the inside of the air pressure balance chamber 5. The annular piston 11 moves toward the direction close to the missile head 2 under the action of pressure. On the contrary, when the temperature of the air inside the cover body 1 decreases, a negative pressure environment is formed inside the cover body 1, and the annular piston 11 moves away from the missile head 2, thereby balancing the pressure inside the cover body 1 under high and low temperature environments, and then under the action of the annular piston 11, the air tightness and water tightness of the cover body 1 can be effectively guaranteed, thereby improving the stability of the radar operation inside the cover body 1;

[0032] The air pressure balance chamber 5 is slidably connected with a connecting ring 10, and two annular pistons 11 are respectively fixed on the top and bottom of the connecting ring 10. The connecting ring 10 is used to fix the two annular pistons 11 so that the two annular pistons 11 form a whole, which can reduce the friction between the annular pistons 11 and the air pressure balance chamber 5 while ensuring the air tightness and water tightness between the annular pistons 11 and the air pressure balance chamber 5;

[0033] The gap between the connecting ring 10 and the air pressure balance chamber 5 is matched, and the annular piston 11 and the air pressure balance chamber 5 have an interference fit. The gap between the connecting ring 10 and the air pressure balance chamber 5 can avoid large friction with the air pressure balance chamber 5 when the connecting ring 10 expands and contracts in high and low temperature environments, thereby improving the stability of the structure. The interference fit between the annular piston 11 and the air pressure balance chamber 5 ensures the air tightness and water tightness between the annular piston 11 and the air pressure balance chamber 5.

[0034] Example 2

[0035] The antenna cover that is easy to disassemble and assemble provided in Example 1 is further optimized. Specifically, Figure 3-5 As shown,

[0036] A connecting seat 9 is fixed on the top of the missile head 2, and threads are provided on the inner side of the air pressure balance chamber 5 and the outer side of the connecting seat 9. The outer side of the connecting seat 9 is threadedly connected to the inner side of the air pressure balance chamber 5. The threaded connection facilitates the disassembly and assembly between the cover body 1 and the missile head 2. The structure is simple and reliable, and is easy to process and assemble. The joints between the cover body 1, the missile head 2 and the connecting flange 3 can be kept smooth, which is beneficial to reducing wind resistance during flight.

[0037] A second sealing gasket 8 is provided at the top of the missile head 2 and located outside the connecting seat 9, and a first sealing gasket 7 is provided at the top of the inner side of the air pressure balance chamber 5 and located directly above the connecting seat 9. The first sealing gasket 7 and the second sealing gasket 8 are used to seal between the connecting flange 3 and the missile head 2, thereby compensating for the defect of insufficient sealing caused by the threaded connection between the missile head 2 and the connecting flange 3, and improving the sealing performance of the structure;

[0038] An I-shaped support frame 12 is fixed inside the second sealing gasket 8 and the first sealing gasket 7. The material of the I-shaped support frame 12 is polyetheretherketone (PEEK), which has the characteristics of stable performance in high temperature environment and has a certain softness relative to metal. The I-shaped support frame 12 is used to support the first sealing gasket 7 and the second sealing gasket 8 to avoid excessive deformation of the first sealing gasket 7 and the second sealing gasket 8, thereby further improving the sealing performance of the structure.

[0039] The use process of the antenna cover that is easy to disassemble and assemble provided by the utility model is as follows:

[0040] Technical principle: When the air inside the cover body 1 expands at high temperature, a high-pressure environment is formed inside the cover body 1, and the gas enters the interior of the air pressure balance chamber 5 through the second air vent 6. The annular piston 11 moves toward the direction close to the missile warhead 2 under the action of pressure, and the gas inside the air pressure balance chamber 5 is discharged through the first air vent 4. Conversely, when the temperature of the air inside the cover body 1 decreases, a negative pressure environment is formed inside the cover body 1, and the annular piston 11 moves away from the missile warhead 2. The air inside the air pressure balance chamber 5 enters the interior of the cover body 1 through the second air vent 6, and the outside air enters the interior of the air pressure balance chamber 5 through the first air vent 4, thereby balancing the pressure inside the cover body 1 under high and low temperature environments, and then under the action of the annular piston 11, the air tightness and water tightness of the cover body 1 can be effectively guaranteed, thereby improving the stability of the radar operation inside the cover body 1.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A radome that is easy to disassemble and assemble, characterized in that: The invention comprises a cover body (1), a connecting flange (3) is fixed at the bottom of the cover body (1), the bottom of the connecting flange (3) is detachably connected to a missile warhead (2), a gas pressure balance chamber (5) is provided inside the connecting flange (3), a ring piston (11) is symmetrically slidably connected inside the gas pressure balance chamber (5), a plurality of second air holes (6) are evenly distributed at the top of the connecting flange (3) and at positions corresponding to the gas pressure balance chamber (5), the second air holes (6) are located inside the cover body (1) and are connected to the gas pressure balance chamber (5), a first air hole (4) is provided on one side of the bottom of the connecting flange (3), and the first air hole (4) is connected to the gas pressure balance chamber (5).

2. The antenna cover that is easy to disassemble and assemble according to claim 1, characterized in that: A connecting ring (10) is slidably connected inside the air pressure balance chamber (5), and the two annular pistons (11) are respectively fixed on the top and bottom of the connecting ring (10).

3. The antenna cover that is easy to disassemble and assemble according to claim 2, characterized in that: There is a clearance fit between the connecting ring (10) and the air pressure balance chamber (5), and there is an interference fit between the annular piston (11) and the air pressure balance chamber (5).

4. The radome that is easy to disassemble and assemble according to claim 1, characterized in that: A connecting seat (9) is fixed on the top of the missile warhead (2), and threads are provided on the inner side of the air pressure balance chamber (5) and the outer side of the connecting seat (9), and the outer side of the connecting seat (9) is threadedly connected to the inner side of the air pressure balance chamber (5).

5. The antenna cover that is easy to disassemble and assemble according to claim 4, characterized in that: A second sealing gasket (8) is provided at the top of the missile warhead (2) and located outside the connecting seat (9), and a first sealing gasket (7) is provided at the top of the inner side of the air pressure balance chamber (5) and located directly above the connecting seat (9).

6. The radome that is easy to assemble and disassemble according to claim 5, characterized in that: An I-shaped support frame (12) is fixed inside the second sealing gasket (8) and the first sealing gasket (7).

7. The radome that is easy to disassemble and assemble according to claim 4, characterized in that: The first sealing gasket (7) and the second sealing gasket (8) are both made of perfluororubber.

8. The radome that is easy to assemble and disassemble according to claim 6, characterized in that: The material of the I-shaped support frame (12) is polyether ketone.

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