A front hinged socket maintenance door

Abstract

The utility model belongs to the technical field of aircraft structure design, concretely relates to a front -over type socket maintenance mouth lid, including front cover, bottom plate and installation shaft, the lower extreme of front cover is fixedly connected with bottom plate, the bottom plate activity is sheathed in installation shaft, the installation shaft is fixed in the lower extreme of body beam structure, front cover can rotate with bottom plate around installation shaft, and the upper end is fixedly connected with the upper end of body beam structure after the rotation of front cover in place, the upper end of body beam structure and lower end are arranged with the wing plug, can expose the socket of wing plug corresponding after the front cover over -opening. The maintenance mouth lid that adopts the utility model design can conveniently realize the installation and maintenance function of the hanging beam socket, the simple structure reduces the number of parts, convenient to use, the operation period is short, shortens the dismounting time of hanging beam on the machine.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft structural design technology, specifically relating to a front-flipping socket maintenance cover. Background Technology

[0002] To facilitate the installation and maintenance of the sockets connecting the overhead beam and the wing, the overhead beam typically has a socket maintenance cover in the socket area. Currently used socket maintenance covers generally employ a combination of hinges, a sliding door, and a quick-release lock, with a left-right flip-top opening mechanism. This method is applicable to most beam structures. However, with the diversification of wing and beam structures, socket maintenance covers face new challenges in application. For example, when the socket is located at the front end of the overhead beam, the wing leading edge and beam structure limit the flip-top angle of the cover, making a left-right flip-top opening mechanism impossible. To improve efficiency and ease of operation, designing a new type of socket maintenance cover is essential. Utility Model Content

[0003] Purpose of the utility model: In order to improve the efficiency of use and facilitate the operation of personnel, this utility model designs a front-flipping socket maintenance cover.

[0004] Technical Solution: To achieve the above-mentioned utility model objective, a front-flipping socket maintenance cover is specifically proposed, comprising a front cover, a base plate, and a mounting shaft; the lower end of the front cover is fixedly connected to the base plate, the base plate is movably mounted on the mounting shaft, and the mounting shaft is fixed to the lower end of the fuselage beam structure; the front cover and the base plate can rotate together around the mounting shaft, and after the front cover rotates to its position, its upper end is fixedly connected to the upper end of the fuselage beam structure; an wing plug is arranged between the upper and lower ends of the fuselage beam structure, and the socket corresponding to the wing plug can be exposed after the front cover is flipped open.

[0005] Furthermore, the base plate and the front cover are fixed together by at least two rivets, which are evenly distributed along the connecting edge of the base plate and the front cover.

[0006] Furthermore, at least one screw is pre-fixed at the upper end of the front cover. The screw is a hexagonal head screw. After the front cover is rotated into place, the upper end of the front cover is fastened to the upper end of the body beam structure by tightening the screw.

[0007] Furthermore, the mounting shaft is a stepped shaft structure, with a limiting boss at one end and an external thread at the other end. After the mounting shaft passes through the shaft hole of the base plate, the mounting shaft is locked and fixed to the lower end of the body beam structure by the engagement of a nut and the external thread. The limiting boss is used to prevent the base plate from moving axially along the mounting shaft.

[0008] Furthermore, the front cover is made of aerospace aluminum alloy, and the outer surface of the front cover is flush with the outer surface of the fuselage beam structure.

[0009] Furthermore, the base plate is an arc-shaped plate structure, and the curvature of the base plate is adapted to the curvature of the lower end of the body beam structure.

[0010] Furthermore, the number of rivets is three, and the three rivets are arranged at equal intervals along the connecting edge of the base plate and the front cover.

[0011] Technical benefits: The maintenance cover designed with this utility model can facilitate the installation and maintenance of the hanging beam socket; the structure is simple, reducing the number of parts; it is easy to use and has a short operation cycle, shortening the time for the hanging beam to be installed and removed on the machine. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A frontal view of the structural diagram; Figure 3 A schematic diagram of a base plate and mounting shaft; Figure 4 This is a schematic diagram of the structure of this utility model when it is locked inside the beam; Figure 5 This is a schematic diagram of the structure of this utility model when it is opened inside the beam; Among them, 1-front cover, 2-screw, 3-base plate, 4-mounting shaft, 5-beam, and 6-socket. Detailed Implementation

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings or specific implementation examples. It should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described, and these examples should not be construed as limited to the examples set forth herein. Rather, these examples are described to better demonstrate the positive effects of this utility model, and all aspects not detailed herein are considered to be well-known or conventional techniques in the art.

[0014] The external structure of this utility model is as follows: Figure 1 As shown, it consists of a front cover 1, screws 2, a base plate 3, and a mounting shaft 4. The front cover 1 and the base plate 3 have mounting holes, which can be used to connect them with rivets and rotate together around the mounting shaft.

[0015] When it is necessary to close the socket maintenance cover, such as Figure 4 As shown, rotate the socket maintenance cover backward into place, and then tighten screw 2 to lock the socket maintenance cover.

[0016] When it is necessary to open the socket maintenance cover for installation and maintenance, such as Figure 5As shown, screw 2 is then unscrewed, and the socket maintenance cover can be flipped forward around the mounting axis to expose the socket inside the maintenance cover. At this point, the socket can be installed, and maintenance work such as docking and disassembling with the wing plug can be carried out.

[0017] like Figures 1-3 As shown, the front-flipping socket maintenance cover disclosed in this utility model includes a front cover 1, a base plate 3, and a mounting shaft 4. The front cover 1 is made of aviation aluminum alloy, and its outer surface is polished and flush with the outer surface of the fuselage beam structure 5 to ensure that the aerodynamic shape of the aircraft is not damaged. The base plate 3 is an arc-shaped plate structure, and its curvature is perfectly matched with the curvature of the lower end of the fuselage beam structure 5 to ensure that the base plate 3 can fit tightly against the lower end of the fuselage beam structure 5.

[0018] The lower end of the front cover 1 and the edge of the base plate 3 are provided with corresponding mounting holes, which are fixed by three rivets 7. The three rivets 7 are arranged at equal intervals along the connecting edge to improve the stability and vibration resistance of the connection. The middle part of the base plate 3 is provided with a shaft hole. The mounting shaft 4 is a stepped shaft structure. One end of the shaft is integrally formed with a limiting boss 8, and the other end is machined with an external thread. After the mounting shaft 4 passes through the shaft hole of the base plate 3, the fixed end of the mounting shaft 4 is welded to the mounting seat preset at the lower end of the body beam structure 5. Then, the nut 9 is used to lock the mounting shaft 4 with the external thread. The limiting boss 8 abuts against the outside of the base plate 3 to prevent the base plate 3 from moving axially along the mounting shaft 4, ensuring that the base plate 3 can only rotate around the mounting shaft 4.

[0019] The upper end of the front cover 1 is pre-welded with a screw mounting base. The screw 2 is an internal hexagonal head screw. The screw 2 is screwed into the mounting base with the screw end facing the upper end of the fuselage beam structure 5. A threaded hole is opened at the corresponding position on the upper end of the fuselage beam structure 5. A wing plug (not shown in the attached figure) is arranged between the upper and lower ends of the fuselage beam structure 5. The wing plug is mated and adapted to the socket 6.

[0020] like Figure 4 As shown, when it is necessary to close the maintenance cover, rotate the front cover 1 and the base plate 3 together around the mounting shaft 4 until the upper end of the front cover 1 is in contact with the upper end of the body beam structure 5. At this time, tighten the screw 2 so that the screw end of the screw 2 is screwed into the threaded hole at the upper end of the body beam structure 5, thus completing the locking of the maintenance cover. At this time, the socket 6 is sealed inside the body beam structure 5 to avoid interference from the external environment.

[0021] like Figure 5 As shown, when it is necessary to install or maintain the socket 6, use an Allen wrench to loosen the screw 2 to release the fixing relationship between the front cover 1 and the upper end of the fuselage beam structure 5. Then, rotate the front cover 1 and the base plate 3 together around the mounting shaft 4 forward until the front cover 1 is fully opened and the socket 6 inside the fuselage beam structure 5 is exposed. At this time, the operator can easily complete the installation of the socket 6, the docking or disassembly of the wing plug and the socket 6, and other maintenance work.

[0022] The above specific embodiments or examples are only used to explain the technical solutions of this utility model and are not intended to limit this application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. It can be understood by those skilled in the art that, based on the design concept of this application, adaptive modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications, equivalent substitutions, and adaptive improvements do not depart from the technical essence of this utility model and should all be covered within the protection scope of this application.

Claims

1. A front-flipping socket maintenance cover, characterized in that, It includes a front cover (1), a base plate (3), and a mounting shaft (4); the lower end of the front cover (1) is fixedly connected to the base plate (3), the base plate (3) is movably mounted on the mounting shaft (4), and the mounting shaft (4) is fixed to the lower end of the fuselage beam structure (5); the front cover (1) and the base plate (3) can rotate together around the mounting shaft (4), and after the front cover (1) rotates to the position, its upper end is fixedly connected to the upper end of the fuselage beam structure (5); a wing plug is arranged between the upper and lower ends of the fuselage beam structure (5), and the socket (6) corresponding to the wing plug can be exposed after the front cover (1) is flipped open.

2. The front-flipping socket maintenance cover according to claim 1, characterized in that, The base plate (3) and the front cover (1) are fixed together by at least two rivets, which are evenly arranged along the connecting edge of the base plate (3) and the front cover (1).

3. The front-flipping socket maintenance cover according to claim 2, characterized in that, At least one screw (2) is pre-fixed at the upper end of the front cover (1). The screw (2) is an internal hexagonal head screw. After the front cover (1) is rotated into place, the upper end of the front cover (1) is fastened to the upper end of the body beam structure (5) by tightening the screw (2).

4. The front-flipping socket maintenance cover according to claim 1, characterized in that, The mounting shaft (4) is a stepped shaft structure with a limiting boss at one end and an external thread at the other end. After the mounting shaft (4) passes through the shaft hole of the base plate (3), the mounting shaft (4) is locked and fixed to the lower end of the body beam structure (5) by the cooperation of the nut and the external thread. The limiting boss is used to prevent the base plate (3) from moving axially along the mounting shaft (4).

5. The front-flipping socket maintenance cover according to claim 1, characterized in that, The front cover (1) is made of aviation aluminum alloy, and the outer surface of the front cover (1) is flush with the outer surface of the fuselage beam structure (5).

6. The front-flipping socket maintenance cover according to claim 1, characterized in that, The base plate (3) is an arc-shaped plate structure, and the curvature of the base plate (3) is adapted to the curvature of the lower end of the body beam structure (5).

7. The front-flipping socket maintenance cover according to claim 2, characterized in that, The number of rivets is three, and the three rivets are arranged at equal intervals along the connecting edge of the base plate (3) and the front cover (1).

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