Mouth-shaped beam connecting device of composite wing and fuselage

Abstract

The invention relates to a mouth-shaped beam connecting device of a composite wing and a fuselage. The mouth-shaped beam connecting device comprises a mouth-shaped beam, a mouth-shaped beam connecting piece and a beam separating frame, wherein the mouth-shaped beam connecting piece is connected with an upper edge strip and a lower edge strip of the mouth-shaped beam by bolts and is connected with a left web and a right web of the mouth-shaped beam by adhesive; the beam separating frame consists of a separating frame and a connecting piece; the two ends of the connecting piece are respectively connected with the mouth-shaped beam connecting piece and the separating frame by bolts. A mouth-shaped beam connector of the mouth-shaped beam connecting device is made of aluminum alloy, so that processing is facilitated, and the connection reliability is improved; the mouth-shaped beam connector is connected with the webs by adhesive, so that the connection weight is lightened; the force transmission efficiency of root skin is fully exerted, but the requirement on the skin molding quality is high.

Description

technical field [0001] The invention relates to a mouth-shaped beam connection device for a wing and a fuselage. Background technique [0002] The connection between the wing and the fuselage is divided into peripheral connection scattered force transmission and concentrated force transmission according to the force transmission form. Due to their different performances, they can be used for aircraft with different purposes. Among them, the number of bolts for distributed force transmission in the peripheral connection is relatively large. The advantage is that the force transmission efficiency of the skin at the root of the wing is fully utilized, and no special complicated connection joints are required, which is conducive to reducing the weight of the structural design. The disadvantage is that the wing-body connection is increased. The assembly workload is heavy, and the matching tolerance between the bolt and the hole must be increased, which will adversely affect the t...

AI Technical Summary

Problems solved by technology

Among them, the number of bolts for distributed force transmission in the peripheral connection is relatively large. The advantage is that the force transmission efficiency of the skin at the root of the wing is fully utilized, and no special complicated connection joints are required, which is conducive to reducing the weight of the structural design. The disadvantage is that the wing-body connection is increased. The assembly workload is heavy, and the tolerance between the bolt and the hole must be increased, which will adversely affect the transmission of shear force and fatigue strength

Concentrated force transmission is to connect the wing and the fuselage with several points, which can transmit large force and moment, reduce the assembly man-hours of connecting the wing and the fuselage, and can make the wing-body joint into one, so that The beam is not only the connecting member between the wing and the wing body, but also the load-bearing support point for the external wing and internal loading; its disadvantages are mainly that the benefits of the root skin cannot be fully utilized, the amount of machine addition is large, and there is a lot of material waste

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