Web type wing rib lightening hole flanging reinforcing structure

Abstract

The utility model belongs to the field of airplane structure design, and particularly relates to a web type wing rib lightening hole flanging reinforcing structure which comprises a hole body, a reinforcing boss and a vertical rib. The hole body is of a hollow cylindrical structure, the reinforcing boss and the vertical rib are coaxially arranged with the hole body, the reinforcing boss and the vertical rib are arranged at the end of the hole body, the reinforcing boss is of a circular ring structure and integrally arranged on the outer side of the end of the hole body, and the vertical rib is of a circular ring structure and integrally connected to the reinforcing boss. By arranging the reinforcing bosses and the vertical ribs, it can be guaranteed that the lightening holes play a proper role, meanwhile, the local rigidity is greatly improved with low structural weight increment, stress concentration near the lightening holes is effectively reduced, local crack damage and instability are avoided, and the local rigidity of the lightening holes is improved. The structure weight gain caused by the reinforcing mode is small, and the problem that local instability and damage are prone to occurring near the lightening holes is solved with the minimum weight cost. Meanwhile, machining is convenient, and manufacturing cost is low.

Description

Technical Field

[0001] The present application belongs to the field of aircraft structure design, and in particular relates to a web-type wing rib lightening hole flanging reinforcement structure. Background Art

[0002] Web-type wing ribs are widely used in aircraft wings due to their high strength, designability, and high structural efficiency. However, due to weight reduction, fuel line routing, and wing assembly requirements, a certain number of lightening holes are required in the wing rib web. Larger wings often require more lightening holes. However, web-type wing ribs experience severe stress concentration at the lightening holes, resulting in low local stiffness and a tendency for cracks to form near the holes. To prevent instability and structural failure at the lightening holes while maintaining their effectiveness, a lightening hole reinforcement structure with low structural weight penalty is required to mitigate stress concentration and improve local stiffness.

[0003] Existing technologies primarily focus on the design and selection of lightening hole patterns, employing various shapes tailored to varying stress characteristics. Alternatively, longitudinal and transverse reinforcements are applied to the area where the lightening holes are located to limit the concentration and spread of stress near the holes. However, this approach results in significant structural weight gain, low structural efficiency, and limited applicability. Furthermore, there is no standardized reinforcement structure for existing web-type rib lightening hole structures. Utility Model Content

[0004] The purpose of the present application is to provide a web-type wing rib lightening hole flanging reinforcement structure to solve the problem that there is no unified lightening hole reinforcement structure in the prior art.

[0005] The technical solution of the present application is: a web-type wing rib lightening hole flanging reinforcement structure, comprising a hole body, a reinforcing boss and vertical ribs; the hole body is a hollow cylindrical structure, the reinforcing boss and the vertical ribs are coaxially arranged with the hole body, the reinforcing boss and the vertical ribs are both arranged at the end of the hole body, and the reinforcing boss is a circular ring structure and is integrally arranged on the outside of the end of the hole body, the vertical rib is a circular ring structure and is integrally connected to the reinforcing boss to form a flanging.

[0006] Preferably, the reinforcing boss and the vertical rib are transitioned through an arc.

[0007] Preferably, there are two groups of reinforcing bosses and vertical ribs, which are respectively arranged at both ends of the hole body.

[0008] The web-type wing rib lightening hole flanging reinforcement structure proposed in this application, through the provision of reinforcing bosses and vertical ribs, significantly improves local stiffness with minimal structural weight gain while ensuring the lightening holes function effectively. This effectively reduces stress concentration near the lightening holes, avoids local cracking and instability, and improves local stiffness at the lightening holes. This reinforcement method causes minimal structural weight gain, overcoming the problem of local instability and damage near the lightening holes with minimal weight loss. It also facilitates processing and has low manufacturing costs. 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 This is a top view of the overall structure of this application;

[0011] Figure 2 This is a cross-sectional view of the overall structure of this application.

[0012] 1. Vertical ribs; 2. Strengthening bosses. 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 web-type wing rib lightening hole flange reinforcement structure, such as Figure 1-Figure 2 , including a hole body, a reinforcing boss 2 and a vertical rib 1; the hole body is a hollow cylindrical structure, the reinforcing boss 2 and the vertical rib 1 are coaxially arranged with the hole body, the reinforcing boss 2 and the vertical rib 1 are both arranged at the end of the hole body, and the reinforcing boss 2 is a circular ring structure and is integrally arranged on the outside of the end of the hole body, the vertical rib 1 is a circular ring structure and is integrally connected to the reinforcing boss 2 to form a flanging.

[0015] By providing the reinforcing boss 2 and rib 1, the lightening holes can be effectively utilized while significantly improving local stiffness with minimal structural weight gain. This effectively reduces stress concentration near the lightening holes, avoids local cracking and instability, and improves local stiffness at the lightening holes. This reinforcement method causes minimal structural weight gain, overcoming the problem of local instability and damage near the lightening holes with minimal weight loss. It also facilitates processing and reduces manufacturing costs.

[0016] Preferably, the reinforcing boss 2 and the vertical rib 1 are transitioned through an arc, so that the structure is stable.

[0017] Preferably, there are two groups of reinforcing bosses 2 and vertical ribs 1 and they are respectively arranged at both ends of the hole body, so as to achieve further structural reinforcement.

[0018] In summary, this application has the following advantages:

[0019] 1) Low structural weight gain and high structural utilization efficiency;

[0020] 2) Easy processing and low manufacturing cost;

[0021] 3) Effectively reduce stress concentration near the hole and improve local stiffness.

[0022] 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.

[0023] 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 web-type rib lightening hole flanging reinforcement structure, characterized by: The invention comprises a hole body, a reinforcing boss (2) and a vertical rib (1); the hole body is a hollow cylindrical structure, the reinforcing boss (2) and the vertical rib (1) are both coaxially arranged with the hole body, the reinforcing boss (2) and the vertical rib (1) are both arranged at the end of the hole body, and the reinforcing boss (2) is a circular ring structure and is integrally arranged on the outside of the end of the hole body, and the vertical rib (1) is a circular ring structure and is integrally connected to the reinforcing boss (2) to form a flange.

2. The web-type rib lightening hole flanging reinforcement structure according to claim 1, characterized in that: The reinforcing boss (2) and the vertical rib (1) are transitioned through an arc.

3. The web-type rib lightening hole flanging reinforcement structure according to claim 1, characterized in that: The reinforcing bosses (2) and the vertical ribs (1) are each provided in two groups and are respectively arranged at the two ends of the hole body.

Images