Large-load single-point damage safety joint structure

Abstract

The utility model belongs to the field of aircraft structure design, and particularly relates to a large-load single-point damage safety joint structure which is used for connecting a first connecting piece and a second connecting piece and comprises an inner joint, an outer joint, a structural gasket and a connecting assembly. The outer connector and the inner connector are each provided with a straight bottom plate, reinforcing ribs located on the two sides of the bottom plate and a connecting hole located in one end, the bottom plate of the inner connector is attached to the side, provided with the reinforcing ribs, of the bottom plate of the outer connector, and the structural gasket is arranged between the outer connector and the first connecting piece. A plurality of connecting holes used for being connected with first connecting pieces are distributed in the outer connector, the straight bottom plate of the inner connector and the structural gasket. The single-lug connector can be installed at the position where the strength of the connecting piece is not high, the stress area of the connecting piece is enlarged, the force transmission load path is optimized, the advantage of direct force transmission of the single-lug connector is reserved, and the problem of connector damage and safety is solved.

Description

Technical Field

[0001] The present application belongs to the field of aircraft structure design, and in particular relates to a large-load single-point damage safety joint structure. Background Art

[0002] In aircraft structural design, the transmission of concentrated loads is usually completed by a combination of single-ear and double-ear joints. This structural combination is simple, direct, and widely used. Unfortunately, the single-ear joint has a single force transmission path and cannot be used in areas where damage-safety is required. Utility Model Content

[0003] In order to solve the above problems, the present application provides a large-load single-point damage safety joint structure. Damage safety is a design requirement, that is, even if one load transmission route is damaged, the entire structure is still safe, which is used to connect a first connecting member and a second connecting member, including: an inner joint, an outer joint, a structural gasket and a connecting assembly;

[0004] Among them, both the external joint and the internal joint have a flat bottom plate, reinforcing ribs on both sides of the bottom plate and a connecting hole at one end. The bottom plate of the internal joint is in contact with the side of the bottom plate of the external joint having the reinforcing ribs. The structural gasket is arranged between the external joint and the first connecting member. A plurality of connecting holes for connecting to the first connecting member are distributed on the flat bottom plates of the external joint and the internal joint and the structural gasket; the connecting rod is hinged between the connecting hole and the second connecting member.

[0005] Preferably, the middle position of the straight bottom plate of the inner joint further comprises a middle rib parallel to the reinforcement ribs on both sides.

[0006] Preferably, the connecting assembly includes a connecting rod and a connecting shaft, wherein both ends of the connecting rod have double-ear structures, the double-ear structure at one end is hinged to the connecting hole through the connecting shaft, and the double-ear structure at the other end is connected to the second connecting member.

[0007] Preferably, a spherical bearing for hinged connection with the connecting hole is also installed on the connecting shaft.

[0008] Preferably, the connection hole is located on a connection surface formed at one end of the flat bottom plate, and the connection surface is higher than the flat bottom plate.

[0009] Preferably, the height of the reinforcing rib gradually decreases from one end having the connecting hole to the other end.

[0010] Preferably, the thickness of the flat bottom plate gradually decreases from one end having the connecting hole to the other end.

[0011] Preferably, the flat bottom plate is rectangular.

[0012] The advantages of the present application include: the present application can be installed in a large-load single-point damage safety joint structure, and even if the load transmission route is damaged, the entire structure remains safe, and the force-bearing area of ​​the connecting parts is expanded, optimizing the force transmission load path, retaining the advantage of the single-ear joint in direct force transmission, and solving the problem of joint damage-safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a large-load single-point damage safety joint;

[0014] Figure 2 It is a cross-sectional view of the structure of a heavy-load single-point damage safety joint;

[0015] Figure 3 is an exploded view of the connector assembly;

[0016] Figure 4 This is the installation drawing of the connector assembly. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0018] The present application provides a large load single point damage safety joint structure, such as Figure 1-Figure 4 As shown, it is used to connect the first connecting member and the second connecting member, and includes: an inner joint 1, an outer joint 2, a structural gasket 3 and a connecting assembly 4;

[0019] Among them, both the outer joint 2 and the inner joint 1 have a straight bottom plate, reinforcement ribs on both sides of the bottom plate and a connection hole at one end. The bottom plate of the inner joint 1 fits with the side of the bottom plate of the outer joint 2 with the reinforcement ribs, and a gap of 2 to 5 mm is left between the vertical ribs on both sides. The structural gasket 3 is arranged between the outer joint 2 and the first connector to adjust the distance between the intersection and the end face of the base. The thickness of the gasket is determined by the positioning tolerance of the base, the position tolerance of the intersection and the size tolerance of each part.

[0020] There are multiple connection holes distributed on the flat bottom plate of the outer joint 2 and the inner joint 1 and the structural gasket 3, which are connected to the first connecting member through a set of shear bolts; it is convenient to spread the concentrated load on the base. The connecting rod 4 is hinged between the connection hole and the second connecting member. A single joint ear can withstand 67% of the design load.

[0021] In some optional embodiments, the middle position of the straight bottom plate of the inner joint 1 further comprises a middle rib parallel to the reinforcement ribs on both sides.

[0022] In some optional embodiments, the connecting assembly 4 includes a connecting rod and a connecting shaft, wherein both ends of the connecting rod have a double-ear structure, the double-ear structure at one end is hinged to the connecting hole through the connecting shaft, and the double-ear structure at the other end is connected to the second connecting member.

[0023] In some optional embodiments, a spherical bearing for hinged connection with the connecting hole is also installed on the connecting shaft.

[0024] In some optional embodiments, the connection hole is located on a connection surface formed at one end of the flat bottom plate, and the connection surface is higher than the flat bottom plate.

[0025] In some optional embodiments, the height of the reinforcing rib gradually decreases from one end having the connecting hole to the other end.

[0026] In some optional embodiments, the thickness of the flat bottom plate gradually decreases from one end having the connecting hole to the other end.

[0027] In some optional embodiments, the flat bottom plate is rectangular.

[0028] The advantages of the present application include: the present application can be installed in a large-load single-point damage safety joint structure, and even if the load transmission route is damaged, the entire structure remains safe. It is connected to the base structure through two rows of multiple bolts, and the concentrated load on the ear piece is diffused to the base structure through shearing of the bolts, and the force-bearing area of ​​the connecting part is expanded, optimizing the force transmission load path, retaining the advantage of direct force transmission of the single-ear joint, and solving the problem of joint damage-safety.

[0029] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A large-load single-point damage safety joint structure, used to connect a first connecting piece and a second connecting piece, characterized in that: include: An inner joint (1), an outer joint (2), a structural gasket (3) and a connecting assembly (4); The outer joint (2) and the inner joint (1) both have a flat bottom plate, reinforcing ribs on both sides of the bottom plate, and a connecting hole at one end; the bottom plate of the inner joint (1) fits with the side of the bottom plate of the outer joint (2) having the reinforcing ribs; the structural gasket (3) is arranged between the outer joint (2) and the first connecting member; a plurality of connecting holes for connecting to the first connecting member are distributed on the flat bottom plates of the outer joint (2) and the inner joint (1) and the structural gasket (3); and the connecting component (4) is hinged between the connecting hole and the second connecting member.

2. The large-load single-point damage safety joint structure according to claim 1 is characterized in that: The middle position of the straight bottom plate of the inner joint (1) also has a middle rib parallel to the reinforcement ribs on both sides.

3. The heavy-load single-point damage safety joint structure according to claim 1, characterized in that: The connecting assembly (4) comprises a connecting rod and a connecting shaft, wherein both ends of the connecting rod have double-ear structures, the double-ear structure at one end is hinged to the connecting hole through the connecting shaft, and the double-ear structure at the other end is connected to the second connecting piece.

4. The heavy-load single-point damage safety joint structure according to claim 3 is characterized in that: A spherical bearing for hinged connection with the connecting hole is also installed on the connecting shaft.

5. The heavy-load single-point damage safety joint structure according to claim 1, characterized in that: The connection hole is located on a connection table formed at one end of the flat bottom plate, and the connection table is higher than the flat bottom plate.

6. The heavy-load single-point damage safety joint structure according to claim 1, characterized in that: The height of the reinforcing rib gradually decreases from one end with the connecting hole to the other end.

7. The heavy-load single-point damage safety joint structure according to claim 1, characterized in that: The thickness of the flat bottom plate gradually decreases from one end with the connecting hole to the other end.

8. The heavy-load single-point damage safety joint structure according to claim 1, characterized in that: The flat bottom plate is rectangular.

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