Lossless connection method and connection structure for sleeving of composite material pipe body and flange

Abstract

The invention provides a lossless connection method and a lossless connection structure for sleeving of a composite material pipe body and a flange. The connection method comprises the steps that S1, in a sleeving area of the flange and the composite material pipe body, a plurality of protruding parts with the same height are arranged in the circumferential direction of the sleeving surface of the flange or the composite material pipe body; S2, the flange and the composite material pipe body are connected in a sleeving mode, and the radial relative positions of the flange and the composite material pipe body are fixed through the protruding parts; and S3, the two ends of the sleeving area are sealed to form a sealed area, the sealed area is filled with resin glue liquid, then the resin glue liquid is cured, and lossless connection of sleeving of the composite material pipe body and the flange is completed. According to the lossless connection method and the lossless connection structure for sleeving of the composite material pipe body and the flange, the resin glue liquid gluing mode is adopted, the structural integrity of the composite material pipe body cannot be damaged, the process is simple, the thickness of a resin glue layer between the sleeving surfaces of the composite material pipe body and the flange in the sleeving area is uniform, and the bearing capacity and the connection reliability are further improved.

Description

technical field [0001] The invention belongs to the technical field of composite material products, and in particular relates to a non-destructive connection method and connection structure for socketing a composite material pipe body and a flange. Background technique [0002] Composite pipe body, that is, a tubular structure made of composite materials, such as a composite material drive shaft for transmission, inevitably needs to be connected with other metal structures (such as flanges) in order to achieve load transmission. The commonly used connection schemes for composite pipe bodies and flanges and other joints include bolted joints, pre-embedded joints, and glued joints. Bolted connection, that is, the flange is connected to the composite material pipe body by bolts. During the bolted connection, the composite material in the connection area needs to be drilled, which destroys the structural integrity of the composite material pipe body, and is prone to failure in t...

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Problems solved by technology

Chinese patent document CN101705961A discloses a method for connecting a winding-molded composite transmission shaft and a metal flange. In this technology, the strength and deformation resistance of the connection are enhanced through the combination of adhesive bonding and mechanical connection, so as to realize shafting torsion, Stable transmission of tension and compression loads, but in this connection method, the adhesive is evenly coated on the bonding surface of the flange and the surface of the pin key, and then the pin key is assembled into the keyway of the composite material, because the adhesive itself is easy to Deformation, easy flow, cannot be effectively controlled during assembly to keep the gap between the outer wall of the composite pipe and the inner wall of the flange uniform, so that the thickness of the glue layer between the flange and the composite pipe body in the connection structure obtained after the adhesive is cured is not the same Uniformity, prone to cavitation areas, resulting in low product connection reliability, or special tooling is required to maintain a uniform thickness of the adhesive layer, resulting in low connection efficiency and tooling cost consumption

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