Composite material pipe fitting joint

Abstract

A composite material pipe fitting joint adopts the technical scheme that a plurality of parallel seams are uniformly arranged on the pipe wall at the at least one end of the composite material pipe fitting in the circumferential direction; a metal taper pipe and a metal tightening taper sleeve matched for use are arranged; the metal taper pipe is divided into a taper part, an external thread partand a connection section part, wherein the bottom diameter of the external thread part is slightly bigger than the outer diameter of the composite material pipe, the diameter at the small end of the metal taper pipe is equal to the inner diameter of the composite material pipe, and the length of the taper part is equal to or slightly bigger than the depth of each seam processed at a pipe orifice of the composite material pipe; and the metal tightening taper sleeve is divided into two sections, wherein an internal taper is arranged at one section of the small end and consistent with the taper of the metal taper pipe, the diameter at the small end is equal to the outer diameter of the composite material pipe, and internal threads are arranged at the big end of the metal tightening taper sleeve and matched with the external threads at the middle section of the metal taper pipe. The composite material pipe fitting joint provided by the invention has excellent economical efficiency and adaptability, simple and reliable technology, as well as simplicity and flexibility, and is suitable for the connection between the composite material pipes or metal pipes, particularly to the construction of complicated space structures.

Description

[0001] technical field [0002] The invention relates to a design scheme of a pipe component joint of a composite material structure. Suitable and especially suitable for complex space truss structures designed with composite material tube members. The invention also relates to methods of connecting such composite pipe fittings to other parts / components. Background technique [0003] Composite pipes (such as carbon fiber pipes, glass fiber pipes, etc.) have been commercially produced in large quantities, but the composite pipe itself is not suitable for machining, and it is difficult to achieve the joints required by complex structures. At present, the design of the joints of pipe members of composite material structure is divided into four categories according to the material and molding process: one is the short fiber molded joint, that is, the joint is formed at the same time when the composite material pipe member is formed. This method can form complex joint forms, bu...

AI Technical Summary

Problems solved by technology

The design of the above-mentioned composite material pipe joint has complex process, difficult processing and manufacturing, and insufficient flexibility, especially in the occasions where the joint form is complex and changeable.

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