Fatigue-resistant impact-resistant pull-off-resistant bidirectional buckling and pressing joint

Abstract

The invention discloses a fatigue-resistant impact-resistant pull-off-resistant bidirectional buckling and pressing joint. The fatigue-resistant impact-resistant pull-off-resistant bidirectional buckling and pressing joint comprises a buckling and pressing joint body, a loose flange and a flexible pipe body, wherein the buckling and pressing joint comprises an outer pressure ring and an inner pressure ring; the loose flange is of a flange plate structure; the flexible pipe body is sequentially provided with an inner rubber layer, a framework layer, at least two fatigue-resistant buffer layersand an outer rubber layer from inside to outside at the joint of the buckling and pressing joint body and the pipe body; the outer pressure ring sleeves the inner rubber layer; the inner pressure ringsleeves the outmost fatigue-resistant buffer layer; the outer pressure ring is folded outwards to form a dovetail groove where an annular disc formed by outward folding of the inner pressure ring islocated; the outward folding part of the framework layer is clamped by the inner pressure ring and the outer pressure ring in a barb shape; the barb end part of the framework layer is turned over by 270 degrees; and the bidirectional buckling and pressing joint body and the pipe body are integrally formed by vulcanization. According to the joint, the joint body is firmly combined with the pipe body, and the fatigue-resistant buffer layer enables the impact stress from the flexible pipe body to a rigid joint to be effectively relieved and released. The technical effects of high connection strength, high pull-off resistance and high fatigue and impact resistance are achieved.

Description

technical field [0001] The invention relates to a bidirectional crimping joint with fatigue resistance, impact resistance and pull-off resistance, in particular to a crimping joint structure of a flexible connecting pipe. The utility model belongs to the technical field of pipeline connectors and is mainly used for pipeline systems of various working media such as oil and water. Background technique [0002] At present, in petroleum, chemical industry, hydraulic machinery, shipbuilding and other industrial fields, a large number of pipeline systems using oil and water as working media are widely used. Under the action of equipment operation, thermal expansion and contraction, vibration and shock, etc. Corresponding forces, vibrations, noises and displacements are produced. Therefore, a large number of rubber hoses are used in the pipeline system to play the role of vibration reduction and noise reduction, fatigue resistance and impact resistance, displacement compensation a...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a two-way buckle joint with fatigue resistance, impact resistance and pull-off resistance to solve the problem of low connection strength, poor pull-off resistance, serious stress concentration phenomenon, insufficient fatigue resistance and impact resistance, and poor self-locking function of the current general joints. well-rounded technical issues

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