Winglet butt joint structure

Abstract

The utility model belongs to the technical field of aircraft fastener design, and particularly relates to a winglet butt joint structure which comprises an outer wing end rib, a winglet root rib, a butt joint bolt and a barrel-shaped nut. A web of the wingtip winglet root rib is provided with a first mounting hole, the outer wing end rib is provided with a second mounting hole, and the end face of the web of the wingtip winglet root rib is provided with a nut mounting hole communicated with the first mounting hole; the barrel-shaped nut is cylindrical, a through threaded hole perpendicular to the axis is formed in the cylindrical surface of the barrel-shaped nut, the barrel-shaped nut is inserted into the nut mounting hole, the through threaded hole is coaxial with the first mounting hole, and the butt-joint bolt penetrates through the first mounting hole to be connected with the barrel-shaped nut, so that the outer wing end rib is connected with the wingtip winglet root rib. The winglet and the outer wing can be quickly disassembled and assembled, and the external field maintenance efficiency is improved. A maintenance opening cover is prevented from being arranged on a wingtip winglet wall plate, the integrity of a wall plate structure is guaranteed, and the complexity of the structure is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft fastener design, and particularly relates to a wing tip winglet butt joint structure. BACKGROUND

[0002] The wing tip winglet is usually butt jointed with the outer wing in a sleeve structure, but the wing tip winglet is inconvenient to disassemble, and the detachable fastener can only meet the disassembly for a limited number of times. The concentrated butt joint is designed near the wallboard position, a special maintenance cover needs to be designed, and sealing design needs to be made for the maintenance cover, which is complex in structure. SUMMARY

[0003] In order to solve the above problems, the application provides a wing tip winglet butt joint structure, which comprises:

[0004] An outer wing end rib, a wing tip winglet root rib, a butt joint bolt and a barrel nut.

[0005] The web plate of the wing tip winglet root rib has a first mounting hole, the outer wing end rib has a second mounting hole, and the end face of the web plate of the wing tip winglet root rib has a nut mounting hole penetrating the first mounting hole.

[0006] The barrel nut is in a cylindrical shape, and a through threaded hole perpendicular to the axis is formed in the cylindrical surface of the barrel nut. The barrel nut is inserted into the nut mounting hole, the through threaded hole is coaxial with the first mounting hole, the butt joint bolt is connected with the barrel nut through the first mounting hole, and the outer wing end rib is connected with the wing tip winglet root rib.

[0007] Preferably, the web plate of the wing tip winglet root rib further has a shear pin, and the wing tip winglet root rib has a shear pin hole for inserting the shear pin.

[0008] Preferably, the barrel nut further has a retainer. When the barrel nut is inserted into the nut mounting hole, the retainer is compressed. When the through threaded hole is coaxial with the first mounting hole, the retainer is expanded to position the barrel nut.

[0009] Preferably, a steel bushing is arranged in the nut mounting hole.

[0010] Preferably, the butt joint surfaces of the outer wing end rib and the wing tip winglet root rib are both flat surfaces.

[0011] Preferably, the outer wing end rib and the wing tip winglet root rib are both made of aluminum alloy.

[0012] The advantages of the application include that the wing tip winglet butt joint structure designed in the application can realize quick disassembly and installation of the wing tip winglet and the outer wing, improve the field maintenance efficiency, avoid opening a maintenance cover on the wing tip winglet wallboard, ensure the integrity of the wallboard structure, and reduce the complexity of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1is a preferred embodiment winglet docking structure of the present application isometric view;

[0014] Figure 2 is a preferred embodiment winglet docking structure of the present application isometric view;

[0015] Figure 3 is a preferred embodiment winglet docking structure of the present application isometric view;

[0016] Figure 4 is Figure 3 A-A sectional view. DETAILED DESCRIPTION

[0017] In order to make the technical solutions of the present application and its advantages clearer, the technical solutions of the present application will be further clearly, completely and specifically described below in combination with the drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present application, and are only used to explain the present application, but not to limit the present application. It should be noted that, for the purpose of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0018] In addition, it should be further noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" and the like used in the description of the present application should be understood in a broad sense, for example, the connection can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two elements, and those skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0019] As Figure 1 As shown in the isometric view, the present application provides a winglet docking structure, which connects the winglet root rib and the outer wing end rib to realize the docking of the winglet and the outer wing. It comprises:

[0020] The outer wing end rib 1, the winglet root rib 2, the docking bolt 3 and the barrel nut 4;

[0021] At the position close to the upper and lower wall plates of the winglet, 4 groups of docking points are arranged, each group comprising: a first mounting hole on the web of the winglet root rib 2, a second mounting hole on the outer wing end rib 1, and a nut mounting hole 7 on the end face of the web of the winglet root rib 2, which is connected with the first mounting hole;

[0022] The barrel nut 4 is cylindrical, and has a through-thread hole perpendicular to the axis on the cylindrical surface. The barrel nut 4 is inserted into the nut mounting hole 7, and the through-thread hole is coaxial with the first mounting hole. The butt joint bolt 3 is connected with the barrel nut 4 through the first mounting hole, and the outer wing end rib 1 is connected with the winglet root rib 2. The butt joint surface of the outer wing end rib 1 and the winglet root rib 2 is planar, and the outer wing end rib 1 and the winglet root rib 2 are made of aluminum alloy.

[0023] In some optional embodiments, the web plate near the front and rear spars also has a shear pin, and the winglet root rib 2 has a shear pin hole for inserting the shear pin. The shear pin hole transmits the winglet shear force to the outer wing, and positions the winglet during assembly.

[0024] In some optional embodiments, the barrel nut 4 also has a retainer 5, and the nut mounting hole 7 has a steel bushing 6. When the barrel nut 4 is inserted into the nut mounting hole 7, the retainer is compressed. When the through-thread hole is coaxial with the first mounting hole, the retainer 5 is expanded to position the barrel nut 4. Figure 3 During assembly, the steel bushing 6 is first mounted in the nut mounting hole 7, and then the barrel nut is pressed into the steel bushing 6. The barrel nut is positioned by the retainer 5, and the installation of the barrel nut is completed. Figure 2 During assembly of the winglet, the shear pin is first inserted into the outer wing end rib shear pin hole, and the winglet is positioned by the shear pin. The butt joint bolt 3 is inserted into the bolt hole from the outer wing side, and is tightened to realize butt joint of the winglet and the outer wing.

[0025] The advantages of the present application include that the winglet butt joint structure designed by the present application can realize quick disassembly and installation of the winglet and the outer wing, and improves the field maintenance efficiency. The winglet wall plate is not opened to cover the maintenance port, the integrity of the wall plate structure is ensured, and the complexity of the structure is reduced.

[0026] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, and should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wing tip wing butt joint structure, characterized by, The utility model relates to a wing tip rib and winglet rib connecting structure, comprising: an outer wing end rib (1), a winglet rib (2), a butt bolt (3) and a barrel nut (4); the winglet rib (2) has a first mounting hole on its web, the outer wing end rib (1) has a second mounting hole, and the web end face of the winglet rib (2) has a nut mounting hole (7) that penetrates the first mounting hole; the barrel nut (4) is cylindrical, has a through thread hole perpendicular to the axis on its cylindrical surface, is inserted into the nut mounting hole (7), and has the through thread hole coaxial with the first mounting hole; the butt bolt (3) is connected with the barrel nut (4) through the first mounting hole, and the outer wing end rib (1) is connected with the winglet rib (2).

2. The wing tip winglet docking structure of Claim 1, wherein, The winglet rib (2) also has a shear pin on its web, and has a shear pin hole for inserting the shear pin.

3. The wing tip winglet docking structure of Claim 2, wherein, The barrel nut (4) also has a retainer (5), which is compressed when the barrel nut (4) is inserted into the nut mounting hole (7), and is expanded to position the barrel nut (4) when the through thread hole is coaxial with the first mounting hole.

4. The wing tip winglet docking structure of Claim 3, wherein, The nut mounting hole (7) has a steel bushing (6).

5. The wing tip winglet docking structure as defined in claim 1 wherein, The butt surfaces of the outer wing end rib (1) and the winglet rib (2) are flat.

6. The wing tip winglet docking structure of Claim 1, wherein, The outer wing end rib (1) and the winglet rib (2) are made of aluminum alloy.

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