Detectable attachment joint for carbon fiber composite material pipes and application method of detectable attachment joint

Abstract

The invention discloses a detectable attachment joint for carbon fiber composite material pipes and an application method of the detectable attachment joint. The detectable attachment joint comprisesa left joint body and a right joint body. The outer side of the left joint body is in fastening connection with the outer side of the right joint body through an outer clamping sleeve joint, the innerside of the left joint body is in fastening connection with the inner side of the right joint body through an inner insertion pipe, the right end of the left joint body is provided with a left spiralouter thread, the left end of the right joint body is provided with a right spiral outer thread, and the left and right ends of the outer clamping sleeve joint are provided with inner threads. The method comprises the steps of step 1, roughening the surfaces of pipe fittings; step 2, gluing the carbon fiber composite material pipes and the attachment joint; step 3, connecting the carbon fiber composite material pipes. The detectable attachment joint is reasonable in structural design, the method is simple in step, the left joint body and the right joint body are arranged on the two carbon fiber composite material pipes respectively, the inner insertion pipe and the outer clamping sleeve joint are connected to the interiors and exteriors of the left joint body and the right joint body respectively, so that the carbon fiber composite material pipes are fixedly connected, and the connection efficiency and strength can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of connection of structural engineering composite material components, and in particular relates to a detachable connection joint of a carbon fiber composite material pipe and a use method thereof. Background technique [0002] Carbon fiber has excellent characteristics such as high specific strength, high specific modulus, light weight, heat resistance, fatigue resistance, corrosion resistance, and creep resistance. It is not only widely used in satellites, launch vehicles, spacecraft, civil aircraft and other aerospace high-tech cutting-edge It has become an irreplaceable strategic basic material for the cutting-edge defense industry, and it has also begun to be widely used in high-speed rail transit, deep-sea oil fields, new energy, construction and other industries, with broad market prospects. [0003] Carbon fiber composite pipes are widely used in the aerospace field, and the joint connection is one o...

AI Technical Summary

Problems solved by technology

The Chinese patent with the patent application number 201510096893.9 discloses a composite material pipe connection joint using prestressed cables and its use method. The patent connects the end cap of the composite material pipe through the prestressed cable running through the composite material pipe to connect the joint; Although this method is simple in structure and easy to operate, this method is only suitable for small-sized composite pipe fittings, and during use, if the force is more complicated, the connection of the prestressed cables is prone to loosening, so it is not suitable for load-bearing Composite fittings with higher forces and larger dimensions

The patent application number is 201711438940.9, a method for connecting composite materials and metal pipes. In this patent, the connection ends of metal pipes and composite material pipe fittings are processed into a tapered structure, and hollow holes are processed at the connection ends of metal pipe fittings. The connection ends are fastened together. Molding and solidification molding; although this method solves the problems of stress concentration at the edge of the mechanical connection hole, large weight, large dispersion of adhesive bonding, and low reliability, this method has a large amount of processing, and the integrated molding is due to thermal expansion and contraction. The positioning size between them is difficult to be precise, and it is not suitable for products with high dimensional accuracy

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