Large triangular composite material pipe truss modular connecting joint

Abstract

The invention discloses a large triangular composite material pipe truss modular connecting joint, and relates to the technical field of composite pipe truss structures. The large triangular compositematerial pipe truss modular connecting joint comprises a triangular connector, a pipe end joints A, pipe end joints B, pipe end joints C and a bolt pair. The triangular connector comprises rods, three kinds of corner joint plates and nested parts. Three kinds of pipe end joints are arranged, one pipe end joint comprises a chord member pipe connecting sleeve and a connecting flange, and a web member pipe connecting sleeve and two web member pipe connecting sleeves are added to the other two end pipe joints correspondingly. The middle sections of the rods are rhombic sections, and the two endsof each rod transitionally become flat rectangles from rhombuses. High-performance CFRP multi-layer composite thin-wall pipes serve as shells of the rods, and PMI filling materials are arranged in therods. The rods are formed at a time. The large triangular composite material pipe truss modular connecting joint has the advantages of being low in mass, high in strength, large in rigidity, designable in performance and process, simple and reliable in connection, stable in rod, large in bearing capacity and in geometric tolerance requirement, integrally formed and the like.

Description

technical field [0001] The invention relates to the technical field of composite material pipe truss structures, in particular to a modular connection node of a large triangular composite material pipe truss. Background technique [0002] Composite truss structures have the advantages of light weight, high rigidity, vibration resistance and fatigue resistance, and are widely used in aerospace and other modern industrial equipment fields. Thin-walled circular tube (CHS), thin-walled rectangular tube (RHS) or square tube (SHS) are the most commonly used composite material tube structures with high structural efficiency and the most mature materials and structural processes. Triangular trusses and quadrilateral trusses are the most basic three-dimensional space composite material structures. Triangular trusses have fewer members, light weight, and high rigidity. The modular system can be expanded to realize large-scale composite material structures. This is an effective way to ...

AI Technical Summary

Problems solved by technology

[0007] Therefore, those skilled in the art are committed to developing a large-scale triangular composite material pipe truss modular connection node, which is simple in manufacture, reasonable in structural force and force transmission, light in weight, easy to install and integrate, simple and reliable in connection, and solves the problem of existing composite materials. Most of the truss connections require aluminum alloy structure connection, complex configuration, difficult manufacture, heavy weight, small stress and other problems

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