An adapter plate for beidou-3 satellite antenna installation

Abstract

The utility model relates to aviation airborne equipment installation technical field provides a switching board for big dipper no. 3 satellite antenna installation. The structure includes the airplane fuselage, reinforcing plate, transfer switching board and big dipper no. 3 antenna. Transfer switching board sets up between reinforcing plate and antenna, utilizes the fixed orifice of its dislocation distribution respectively through bolt and below reinforcing plate and above antenna realizes screw fastening connection, and transfer switching board bottom is equipped with sealing groove and sealing ring, and is provided with the weight reduction groove in sealing ring inboard and the process hole of through -penetration. The utility model discloses through setting up the transfer switching board with the hole position conversion function, has solved big dipper no. 3 antenna and fuselage structure hole position mismatch and the problem that installation needs to destroy the fuselage, and integrated sealing, weight reduction and positioning design have effectively promoted the sealing performance of structure, reduced the additional weight, and have improved installation precision and efficiency greatly.

Description

Technical Field

[0001] This utility model relates to the field of airborne equipment installation technology, and in particular to an adapter board for installing BeiDou-3 satellite antennas. Background Technology

[0002] With the rapid development of global satellite navigation technology, the BeiDou-3 global satellite navigation module has been widely used in the aviation field. To achieve high-precision positioning and communication functions for aircraft, a BeiDou-3 satellite antenna is typically installed on the aircraft fuselage. This type of antenna is usually an externally mounted device and needs to be securely fixed to the outer surface of the aircraft skin to ensure it can withstand complex aerodynamic loads and maintain good signal reception during high-speed flight.

[0003] However, in actual modification projects, the BeiDou-3 satellite antenna, as a standardized product, has a fixed distribution of mounting holes on its base. Furthermore, the fuselage structure of existing aircraft, especially the layout of its internal load-bearing components such as longitudinal beams and bulkheads, is also predetermined. In many cases, the fuselage structure holes below the required antenna mounting location cannot be directly aligned with the antenna's built-in mounting holes. If forced installation is attempted, traditional methods often require re-drilling or even cutting and modifying the aircraft's skin or internal frame. This not only damages the original load-bearing structure and airtightness of the fuselage but also involves complex airworthiness approval processes, significantly increasing the difficulty and cost of modification. In addition, direct installation also faces problems such as inadequate sealing of the contact surface, difficulty in effectively waterproofing and preventing corrosion, and unnecessary additional weight burden from the added structure.

[0004] Therefore, this utility model proposes an antenna installation structure for BeiDou-3 satellites to address the shortcomings of existing technologies. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides an adapter plate for installing BeiDou-3 satellite antennas, aiming to improve the problems of existing BeiDou-3 antennas being unable to be directly aligned during installation due to the mismatch between the built-in mounting holes and the body structure, the need for forced installation to perform destructive modifications to the body structure, and the difficulty in ensuring sealing performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adapter plate for installing a Beidou-3 satellite antenna, comprising: an aircraft fuselage, a reinforcing plate, a relay adapter plate, and a Beidou-3 antenna.

[0007] The reinforcing plate is disposed on the surface of the aircraft fuselage and has a first fixing hole. The relay adapter plate is fitted onto the side of the reinforcing plate away from the aircraft fuselage and has a second fixing hole. The BeiDou-3 antenna is fitted onto the side of the relay adapter plate away from the reinforcing plate and has a third fixing hole. The relay adapter plate is threadedly fastened to the reinforcing plate by means of an adapter plate mounting bolt passing through the body of the relay adapter plate and screwed into the first fixing hole. The BeiDou-3 antenna is threadedly fastened to the relay adapter plate by means of an antenna mounting bolt passing through the third fixing hole and screwed into the second fixing hole. Meanwhile, an annular sealing groove is provided on the side surface of the transfer plate facing the reinforcing plate, and a sealing ring is embedded inside the sealing groove, which abuts against the reinforcing plate and the transfer plate.

[0008] Preferably, the side surface of the transfer plate facing the reinforcing plate is also recessed inward to form a weight-reducing groove, the weight-reducing groove is distributed inside the area surrounded by the sealing ring, and the weight-reducing groove is not connected to the second fixing hole.

[0009] Preferably, the relay adapter plate also has process holes that penetrate the upper and lower surfaces of the relay adapter plate, which are used to assist in positioning the Beidou-3 antenna with the relay adapter plate during installation.

[0010] Preferably, the reinforcing plate is fixedly connected to the outer surface of the aircraft fuselage by welding, and the first fixing hole is a blind hole structure opened on the body of the reinforcing plate, and the first fixing hole does not penetrate into the interior of the aircraft fuselage.

[0011] Preferably, the antenna mounting bolt is slidably connected to the third fixing hole, and the antenna mounting bolt is configured to slide up and down along the axial direction of the third fixing hole to extend into and retract from the second fixing hole.

[0012] Preferably, the top end face of the adapter plate mounting bolt is recessed below the upper surface of the relay adapter plate, and the installation position of the adapter plate mounting bolt is outside the vertical projection range of the Beidou-3 antenna on the relay adapter plate.

[0013] Preferably, the position of the second fixing hole on the relay adapter plate is offset from the projection position of the first fixing hole on the relay adapter plate, and the diameter of the second fixing hole is adapted to the thread diameter of the antenna mounting bolt.

[0014] Preferably, the relay adapter plate is a flat plate structure adapted to the shape of the Beidou-3 antenna base, and the material strength of the relay adapter plate is greater than or equal to the material strength of the reinforcing plate.

[0015] This utility model has the following beneficial effects: 1. This utility model introduces a relay adapter plate in conjunction with a reinforcing plate to form a layered installation structure. It utilizes the staggered fixed holes on the relay adapter plate to achieve an indirect connection between the Beidou-3 antenna and the aircraft fuselage. This solves the problems that the mounting holes of the Beidou-3 antenna cannot be directly aligned with the fuselage structure during installation and that traditional installation methods require destructive modifications to the fuselage structure. It achieves the technical effect of meeting the installation requirements of the Beidou-3 antenna while avoiding damage to the fuselage structure.

[0016] 2. This utility model solves the problem that impurities and moisture in the external environment can easily invade the connection gap, thereby corroding the structure or affecting the antenna performance. It achieves good sealing and protection, and extends the service life of the equipment and structure. Attached Figure Description

[0017] Figure 1 This is a perspective view of an adapter plate for installing a BeiDou-3 satellite antenna, as proposed in this utility model. Figure 2 This is a schematic diagram of the structure of a relay adapter plate for installing a Beidou-3 satellite antenna, as proposed in this utility model. Figure 3 This is a schematic diagram of the electrical plug structure of an adapter board for installing a Beidou-3 satellite antenna, as proposed in this utility model. Figure 4 A schematic diagram of a weight-reduction groove structure for an adapter plate used for installing a Beidou-3 satellite antenna, proposed for utility model purposes.

[0018] Legend: 1. Aircraft fuselage; 2. Reinforcing plate; 3. Transit plate; 4. Beidou-3 antenna; 5. Antenna mounting bolts; 6. Transit plate mounting bolts; 7. Transit plate bolt holes; 8. Electrical plug; 9. Isolation ring; 10. Weight reduction groove; 11. Sealing ring; 12. Electrical socket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1 - Figure 4 One embodiment of this utility model is a transfer plate for installing a Beidou-3 satellite antenna, comprising an aircraft fuselage 1 as a basic support platform, a reinforcing plate 2 fixedly connected to the outer surface of the aircraft fuselage 1, a relay transfer plate 3 attached to the upper surface of the reinforcing plate 2, and a Beidou-3 antenna 4 at the top layer. The aircraft fuselage 1, the reinforcing plate 2, the relay transfer plate 3, and the Beidou-3 antenna 4 are stacked sequentially from bottom to top, forming a stable hierarchical installation assembly.

[0021] The reinforcing plate 2 serves as an intermediate medium connecting the aircraft fuselage 1 and the transfer adapter plate 3. Its bottom surface is fixedly connected to the outer surface of the aircraft fuselage 1 by welding. The reinforcing plate 2 has a first fixing hole 5. The first fixing hole 5 does not penetrate into the interior of the aircraft fuselage 1, but is designed as a blind hole structure to ensure the airtightness and structural integrity of the aircraft fuselage 1. The reinforcing plate 2 uses the first fixing hole 5 to provide an installation point for the transfer adapter plate 3.

[0022] The relay adapter plate 3 is located on the side of the reinforcing plate 2 away from the aircraft fuselage 1. The main structure of the relay adapter plate 3 is flat. A second fixing hole 10 is provided on the body of the relay adapter plate 3. The projection position of the second fixing hole 10 in the vertical direction is offset from the projection position of the first fixing hole 5 in the vertical direction. That is, the second fixing hole 10 and the first fixing hole 5 are not on the same axis. This offset design realizes the physical transfer of the hole position. The relay adapter plate 3 is connected to the reinforcing plate 2 by the adapter plate mounting bolt 7, which passes through the body of the relay adapter plate 3 and is screwed into the first fixing hole 5 on the reinforcing plate 2. Thus, the threaded fastening connection between the relay adapter plate 3 and the reinforcing plate 2 is realized. The top end face of the adapter plate mounting bolt 7 is designed to be recessed below the upper surface of the relay adapter plate 3. The installation position of the adapter plate mounting bolt 7 is located outside the vertical projection range of the Beidou-3 antenna 4 on the relay adapter plate 3 to ensure that the adapter plate mounting bolt 7 will not interfere with the subsequent installation of the Beidou-3 antenna 4.

[0023] The Beidou-3 antenna 4 is attached to the surface of the relay adapter plate 3 away from the reinforcing plate 2. The base of the Beidou-3 antenna 4 has a third fixing hole 11. The position of the third fixing hole 11 corresponds one-to-one with the position of the second fixing hole 10 on the relay adapter plate 3. The Beidou-3 antenna 4 is connected to the relay adapter plate 3 by the antenna mounting bolt 6 passing through the third fixing hole 11 and screwing into the second fixing hole 10 on the relay adapter plate 3. The antenna mounting bolt 6 and the third fixing hole 11 are connected by a sliding fit, so that the antenna mounting bolt 6 can slide up and down along the axis of the third fixing hole 11, so as to extend into and out of the second fixing hole 10 during the installation process. Finally, the Beidou-3 antenna 4 is reliably installed on the aircraft fuselage 1 by this double-layer bolt staggered fixing method. The relay adapter plate 3 has an annular sealing groove on the side facing the reinforcing plate 2. The sealing groove extends along the edge contour of the relay adapter plate 3, and a sealing ring 9 is embedded inside the sealing groove. The sealing ring 9 is made of elastic rubber or silicone material, and its cross-sectional diameter is slightly larger than the depth of the sealing groove. When the relay adapter plate 3 is fastened to the reinforcing plate 2 by the adapter plate mounting bolts 7, the sealing ring 9 is squeezed and deformed and tightly abuts against the upper surface of the reinforcing plate 2 and the lower surface of the relay adapter plate 3. This squeeze fit forms a continuous sealing barrier, effectively preventing moisture, dust and other impurities in the external environment from entering the interior of the contact surface between the relay adapter plate 3 and the reinforcing plate 2, thereby avoiding metal corrosion problems caused by impurity accumulation or moisture penetration, and ensuring the long-term stability and reliability of the Beidou-3 antenna 4.

[0024] Meanwhile, the side surface of the transfer plate 3 facing the reinforcing plate 2 is also recessed inward to form a weight reduction groove 8. The weight reduction groove 8 is distributed inside the area surrounded by the sealing ring 9, that is, inside the sealing ring formed by the sealing ring 9. The design of the weight reduction groove 8 removes excess material in the non-load-bearing area of ​​the transfer plate 3. Without affecting the overall structural strength and connection rigidity of the transfer plate 3, it effectively reduces the weight of the transfer plate 3 itself. This hollow weight reduction design conforms to the design principle of lightweight aircraft parts and reduces the additional weight burden on the aircraft fuselage 1 caused by the installation structure.

[0025] In addition, the relay adapter plate 3 is provided with process holes 12, which penetrate the upper and lower surfaces of the relay adapter plate 3. The position of the process holes 12 is precisely calculated and corresponds to the preset positioning reference or positioning pin at the bottom of the Beidou-3 antenna 4. During the installation process, the installers can use the process holes 12 as a visual reference or in conjunction with positioning tools to assist the Beidou-3 antenna 4 in quick and accurate alignment with the relay adapter plate 3, avoiding hole position deviations caused by blind installation and greatly improving installation efficiency and assembly accuracy. As a preferred embodiment, in order to solve the problem of difficulty in pre-installing and aligning bolts during the installation of Beidou-3 antenna 4, the antenna mounting bolt 6 and the third fixing hole 11 on the body of Beidou-3 antenna 4 are connected by a sliding fit. The antenna mounting bolt 6 is constructed to be able to slide freely up and down along the axial direction of the third fixing hole 11. This design allows the installer to retract the antenna mounting bolt 6 upward into the third fixing hole 11 before placing Beidou-3 antenna 4 on the relay adapter plate 3 to avoid the protruding end of the bolt scratching the surface of the relay adapter plate 3. After the precise alignment of Beidou-3 antenna 4 and relay adapter plate 3 is completed through the process hole 12, the antenna mounting bolt 6 is slid downward and screwed into the second fixing hole 10 to complete the locking.

[0026] As another preferred embodiment, in order to avoid damaging the airtight structure of the aircraft fuselage 1 and to ensure the stability of the connection base, the reinforcing plate 2 is fixedly connected to the outer surface of the aircraft fuselage 1 by welding. The first fixing hole 5 opened on the reinforcing plate 2 is strictly designed as a blind hole structure, that is, the depth of the first fixing hole 5 is less than the thickness of the reinforcing plate 2 and the bottom of the first fixing hole 5 is closed and does not penetrate into the skin of the aircraft fuselage 1. In this way, while providing the necessary mechanical connection point for the transfer plate 3, the original structural integrity and airtightness of the aircraft fuselage 1 are maintained.

[0027] As another preferred embodiment, in order to solve the problem of mismatch between holes caused by the inconsistency between the old and new interface standards, the opening position of the second fixing hole 10 on the transfer adapter plate 3 is staggered from the vertical projection position of the first fixing hole 5 on the transfer adapter plate 3. This staggered distribution allows the transfer adapter plate 3 to act as a physical conversion interface, transferring the installation load of the Beidou-3 antenna 4 to the reinforcing plate 2 through the staggered path. This effectively solves the technical problem that the mounting hole of the Beidou-3 antenna 4 and the hole position of the pre-reserved or newly added reinforcing plate 2 on the aircraft fuselage 1 cannot be directly aligned, and realizes the transition of irregular hole positions.

[0028] As another preferred embodiment, in order to prevent the fixing components from interfering with the stable fit of the bottom surface of the Beidou-3 antenna 4, the head of the adapter plate mounting bolt 7 is designed with a countersunk structure and a corresponding countersunk hole is provided on the intermediate transfer plate 3, so that the top surface of the adapter plate mounting bolt 7 after tightening is completely sunk below the upper surface of the intermediate transfer plate 3, and the installation position of the adapter plate mounting bolt 7 is arranged outside the vertical projection range of the base of the Beidou-3 antenna 4 on the intermediate transfer plate 3, so as to ensure that the bottom surface of the Beidou-3 antenna 4 and the upper surface of the intermediate transfer plate 3 can achieve a seamless and tight fit.

[0029] As another preferred embodiment, in order to ensure the mechanical stability and durability of the overall structure in the aviation environment, the relay adapter plate 3 is made of high-strength aluminum alloy or titanium alloy material, and the material strength of the relay adapter plate 3 is designed to be greater than or equal to the material strength of the reinforcing plate 2, so as to ensure that the relay adapter plate 3 can reliably bear and transmit the aerodynamic load and vibration load generated by the Beidou-3 antenna 4 during high-speed flight, and prevent deformation due to insufficient rigidity from affecting the antenna performance.

[0030] Working Principle: In the initial stage of installation, the antenna mounting bolt 5 is first placed in the fixing slot of the Beidou-3 antenna 4, ensuring it is in a slidable ready state. Then, the operator lowers the Beidou-3 antenna 4, gradually bringing its bottom surface closer to the upper surface of the relay adapter plate 3. During this process, the electrical plug 8 is inserted through the electrical socket 12 on the upper surface of the relay adapter plate 3 to ensure precise alignment between the Beidou-3 antenna 4 and the relay adapter plate 3. The insulating ring 9 prevents the Beidou-3 antenna 4 and the relay adapter plate 3 from being too tightly spaced. After alignment, the antenna mounting bolt 5 is tightened along the fixing slot on the relay adapter plate 3. Tightening completes the initial assembly and fixation of the Beidou-3 antenna 4 on the relay adapter plate 3.

[0031] Next, the final installation of the entire assembly onto the aircraft fuselage is carried out. The relay adapter plate 3, with the Beidou-3 antenna 4 already assembled, is lowered and placed on the reinforcing plate 2 welded to the surface of the aircraft fuselage 1. The reinforcing plate 2 is fixed to the aircraft fuselage 1 by multiple rivets. The operator uses the adapter plate mounting bolt 6 to penetrate the body of the relay adapter plate 3 and screws it into the adapter plate bolt hole 7 opened on the reinforcing plate 2. As the adapter plate mounting bolt 6 is gradually tightened, the sealing ring 11 located at the bottom of the relay adapter plate 3 adheres to the reinforcing plate 2, forming a reliable sealing barrier to prevent the intrusion of external impurities. Washers are provided under both the antenna mounting bolt 5 and the adapter plate mounting bolt 6 to prevent wear on the components during rotation.

[0032] Finally, through the aforementioned layered installation steps, the BeiDou-3 antenna 4 is securely connected to the reinforcing plate 2 on the surface of the aircraft fuselage 1 via the relay adapter plate 3. This structural design, utilizing the relay adapter plate 3 as a relay, solves the problem of the mismatch between the built-in holes of the BeiDou-3 antenna 4 and the fuselage structure, avoiding destructive modifications such as opening larger holes in the aircraft fuselage 1. Simultaneously, the weight-reducing groove 10 at the bottom of the relay adapter plate 3 effectively reduces structural weight while ensuring connection strength, meeting the stringent requirements of aircraft for lightweighting and sealing.

Claims

1. A transfer board for installing a Beidou-3 satellite antenna, comprising an aircraft fuselage (1), a reinforcing plate (2), a transfer board (3), and a Beidou-3 antenna (4). A reinforcing plate (2) is disposed on the surface of the aircraft fuselage (1), and the reinforcing plate (2) has a first fixing hole (5); a relay adapter plate (3) is attached to the surface of the reinforcing plate (2) away from the aircraft fuselage (1), and the relay adapter plate (3) has a second fixing hole (10); a Beidou-3 antenna (4) is attached to the surface of the relay adapter plate (3) away from the reinforcing plate (2), and the Beidou-3 antenna (4) has a third fixing hole (11). Its features are, The transfer adapter plate (3) is screwed into the first fixing hole (5) through the adapter plate mounting bolt (7) to achieve a threaded fastening connection between the transfer adapter plate (3) and the reinforcing plate (2); The Beidou-3 antenna (4) is inserted into the third fixing hole (11) and screwed into the second fixing hole (10) through the antenna mounting bolt (6), so as to realize the threaded fastening connection between the Beidou-3 antenna (4) and the relay adapter plate (3); The transfer plate (3) has an annular sealing groove on the side facing the reinforcing plate (2), and a sealing ring (9) is embedded inside the sealing groove. The sealing ring (9) abuts against the reinforcing plate (2) and the transfer plate (3).

2. The adapter board for installing a BeiDou-3 satellite antenna according to claim 1, characterized in that, The transfer plate (3) has a weight-reducing groove (8) recessed inward on the side facing the reinforcing plate (2). The weight-reducing groove (8) is distributed inside the area surrounded by the sealing ring (9), and the weight-reducing groove (8) is not connected to the second fixing hole (10).

3. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The relay adapter plate (3) is also provided with process holes (12), which penetrate the upper and lower surfaces of the relay adapter plate (3) and are used to assist the Beidou-3 antenna (4) in positioning with the relay adapter plate (3) during the installation process.

4. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The reinforcing plate (2) is fixedly connected to the outer surface of the aircraft fuselage (1) by welding, and the first fixing hole (5) is a blind hole structure opened on the body of the reinforcing plate (2). The first fixing hole (5) does not penetrate into the interior of the aircraft fuselage (1).

5. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The antenna mounting bolt (6) is connected to the third fixing hole (11) by a sliding fit. The antenna mounting bolt (6) is configured to slide up and down along the axial direction of the third fixing hole (11) to extend into and out of the second fixing hole (10).

6. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The top end face of the adapter plate mounting bolt (7) is recessed below the upper surface of the intermediate transfer adapter plate (3), and the installation position of the adapter plate mounting bolt (7) is outside the vertical projection range of the Beidou-3 antenna (4) on the intermediate transfer adapter plate (3).

7. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The position of the second fixing hole (10) on the transfer adapter plate (3) is offset from the projection position of the first fixing hole (5) on the transfer adapter plate (3), and the hole diameter of the second fixing hole (10) is adapted to the thread diameter of the antenna mounting bolt (6).

8. The adapter board for mounting a BeiDou-3 satellite antenna according to claim 1, characterized in that, The relay adapter plate (3) is a flat plate structure adapted to the shape of the base of the Beidou-3 antenna (4), and the material strength of the relay adapter plate (3) is greater than or equal to the material strength of the reinforcing plate (2).

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