A shape-preserving structure for the second layer of the joint opening of the aircraft wing body

Abstract

The invention provides a shape preserving structure for two layers of a folding opening of an airplane wing body. The shape preserving structure comprises T-shaped joints, contact decomposers, ten sets of spherical bearing adjusting mechanisms and five sets of adjustable supporting rod assemblies, wherein the contact decomposers, the ten sets of spherical bearing adjusting mechanisms and the five sets of adjustable supporting rod assemblies are connected with the T-shaped joints. Besides the effect of connecting and positioning with a front frame and a rear frame, the effect of decomposing one contact into two or three contacts is achieved, and four sets of connecting joints are combined for use to form five pairs of point-point linear relationships. The shape preserving structure is a rigid whole formed by combining multiple sets of single structures, the shape preserving effect is good, detachment is convenient (installation and detachment can be completed only with one person without lifting equipment), and the shape preserving structure is especially suitable for types with small space.

Description

technical field [0001] The present application relates to the technical field of aircraft assembly and manufacturing, in particular to a conformal structure for aircraft wing-to-body alignment. Background technique [0002] In the manufacture of aircraft, the assembly of the center wing and the center fuselage is a very important link, and it is crucial to ensure the accuracy and stability of the assembly process. Because before the wing-to-body closure, the fuselage and the central wing did not form a closed-loop structure, and the mass of the central wing is relatively large, and when the combination is hoisted and dropped to the theoretical position, there will be a certain impact load, which will make the aircraft The body produces local stress deformation, and the stress release after the assembly is completed cannot be predicted and controlled, so the product quality after alignment will deviate greatly from the theoretical state. Therefore, it is very necessary to ke...

AI Technical Summary

Problems solved by technology

[0006] In the past, there were shape-preserving tooling with similar functions, but the structure was cumbersome, and the space requirements were high. What’s more, the deviation adjustment of the actual state based on the theoretical position in the X, Y, and Z directions was too complicated (adjustment mechanisms were set separately for the three directions) , resulting in an increase in the weight of the shape-conserving tooling, which has a shape-preserving effect and also increases the burden on the fuselage. Therefore, it is urgent to develop a new structure to solve the above problems

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