High-rigidity shear angle sheet structure

Abstract

The utility model belongs to the field of aircraft structure design, and particularly relates to a high-rigidity shear angle sheet structure which comprises a turned-over edge, a web plate, vertical ribs and edge strips. The flange, the vertical ribs and the edge strip define a whole ring structure, the web plate is integrally connected to one end of the whole ring structure, the flange is located on the outer side of the whole ring structure, the two sets of vertical ribs are symmetrically arranged on the two sides of the flange, and the edge strip is correspondingly arranged on the inner side of the whole ring structure; the outer walls of the vertical ribs are connected with the stringer, and the vertical ribs are arranged between the adjacent vertical ribs on the two sides of the stringer. The turnup, the web plate, the vertical rib, the edge strip and the supporting column are designed to be equal in height at the notch of the stringer, so that a thin neck structure is avoided. When the load is large, the phenomenon of stress concentration on the shearing angle piece is avoided. The rigidity of the wing rib at the position of the shearing angle piece is improved by changing the structural form among the traditional wing rib shearing angle piece, the edge strip and the supporting column, and then the structural strength requirement is met.

Description

Technical Field

[0001] The present application belongs to the field of aircraft structure design, and in particular relates to a high-rigidity shear angle piece structure. Background Art

[0002] As an important supporting structure of the wing box section, the wing rib is mainly used to provide support for the wall panel, maintain the aerodynamic shape, and bear and transmit aerodynamic loads, inertial loads, etc. The shear angle piece refers to the structure in which the wing rib is directly connected to the wall panel, which is mainly composed of elements such as the web, vertical ribs, and flanges. The flange of the shear angle piece is connected to the wall panel through bolts. Considering the margin requirements of the fasteners, the flange height is designed to be relatively large. The height of the wing rib flange is usually less than the height of the shear angle piece flange, and the support of the web is greater than the height of the flange, that is, the cross-sectional area on both sides of the flange is large, and the cross-sectional area at the flange is small. This causes the wing rib to form a "thin neck" structure at the flange, which is prone to stress concentration. When the load is small, this structure can basically meet the design requirements. However, when the load is large, this "thin neck" structure cannot meet the strength and other requirements.

[0003] Therefore, how to avoid the "thin neck" structure is a problem that needs to be solved. Utility Model Content

[0004] The purpose of this application is to provide a high-rigidity shear angle piece structure to solve the problem in the prior art that the "thin neck" structure cannot meet the strength requirements when the load is large.

[0005] The technical solution of the present application is: a high-rigidity shear angle piece structure, arranged between adjacent long girder structures, including flanges, webs, vertical ribs and edge strips; the flanges, vertical ribs and edge strips form a full-ring structure, the webs are integrally connected to one end of the full-ring structure, the flanges are located on the outside of the full-ring structure, there are two groups of vertical ribs and they are symmetrically arranged on both sides of the flanges, and the edge strips are correspondingly arranged on the inside of the full-ring structure; the outer walls of the vertical ribs are connected to the long girder, and pillars are provided between adjacent vertical ribs on both sides of the long girder, and the heights of the flanges, webs, vertical ribs, edge strips and pillars are the same at the notch of the long girder.

[0006] Preferably, the middle portion of the edge strip is designed with a sunken structure.

[0007] Preferably, the pillar is connected to the edge strip and the vertical rib at the same time, and the connection positions of the pillar, the edge strip and the vertical rib form a triangular area, and the outer corners of the triangular area are all provided with rounded corner structures.

[0008] The high-rigidity shear gusset structure of this application avoids a "neck" structure by designing the flange, web, ribs, flanges, and struts to be equal in height at the stringer notch. This prevents stress concentration on the shear gussets when subjected to high loads. By modifying the traditional structure between the rib shear gussets, flanges, and struts, the rib stiffness at the shear gussets is increased, thereby meeting structural strength requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions provided by this application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0010] Figure 1 Location diagram of multiple connecting corner pieces for this application;

[0011] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0012] 1. Flanged flange; 2. Web; 3. Vertical rib; 4. Flange; 5. Support. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] A high stiffness shear angle piece structure, such as Figure 1-Figure 2 As shown, it is located between adjacent long stringer structures and includes flanges 1, webs 2, ribs 3, and flanges 4. The flanges 1, ribs 3, and flanges 4 form a complete ring structure, with the webs 2 integrally connected to one end of the ring. The flanges 1 are located on the outside of the ring structure. There are two sets of ribs 3 symmetrically arranged on either side of the flanges 1, and flanges 4 are located on the inside of the ring structure. The outer walls of the ribs 3 are connected to the long stringers. Supports 5 are located between adjacent ribs 3 on either side of the long stringers. The flanges 1, webs 2, ribs 3, flanges 4, and support 5 have the same height at the notch in the long stringers.

[0015] By designing the flange 1, web 2, rib 3, flange 4, and strut 5 to be equal in height at the stringer notch, a "neck" structure is avoided. This prevents stress concentration at the shear gusset when subjected to high loads. By modifying the traditional rib shear gusset, flange 4, and strut 5 structure, the rib stiffness at the shear gusset is increased, thereby meeting structural strength requirements.

[0016] Preferably, the middle portion of the edge strip 4 is designed with a sunken structure, which can reduce the weight of the structure without reducing the bearing capacity.

[0017] The flange 1 is directly connected to the wall panel, and its width is determined by the diameter of the connecting fastener and the edge distance. The height of the support 5 is determined by the results of the rib strength optimization check, while the width of the shear angle flange 1 is determined by the diameter of the fastener.

[0018] Preferably, the pillar 5 is connected to the edge strip 4 and the vertical rib 3 at the same time, and the connection position of the pillar 5, the edge strip 4 and the vertical rib 3 forms a triangular area, and the outer corners of the triangular area are provided with a rounded structure. The setting of the triangular area ensures a stable connection.

[0019] Finally, it should be noted that the drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0020] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-rigidity shear angle piece structure, characterized by: The invention is provided between adjacent long girder structures, and comprises flanges (1), webs (2), vertical ribs (3) and edge strips (4); the flanges (1), vertical ribs (3) and edge strips (4) form a whole ring structure, the webs (2) are integrally connected to one end of the whole ring structure, the flanges (1) are located on the outside of the whole ring structure, the vertical ribs (3) are in total two groups and are symmetrically arranged on both sides of the flanges (1), and the edge strips (4) are correspondingly arranged on the inside of the whole ring structure; the outer walls of the vertical ribs (3) are connected to the long girder, and pillars (5) are provided between adjacent vertical ribs (3) on both sides of the long girder, and the heights of the flanges (1), webs (2), vertical ribs (3), edge strips (4) and pillars (5) are the same at the notch of the long girder.

2. The high-rigidity shear angle piece structure according to claim 1, characterized in that: The middle portion of the edge strip (4) is designed with a sunken structure.

3. The high-rigidity shear angle piece structure according to claim 1, characterized in that: The support (5) is connected to the edge strip (4) and the vertical rib (3) at the same time, and the connection position of the support (5), the edge strip (4) and the vertical rib (3) forms a triangular area, and the outer corners of the triangular area are all provided with rounded corner structures.

Images