Pipe joint locking device

Abstract

The invention provides a pipe joint locking device, the pipe joint locking device includes a pipe joint with an external spline and a lock catch with an internal spline, wherein the pipe joint with the external spline is modification of a general six-directional pipe joint, the modification mainly includes that a six-joint part of the pipe joint is changed into a column with a certain thickness, an external spline structure is formed at the edge of the column through an involute tooth profile , and other parts are in accordance with the structure of the general six-directional pipe joint. The lock catch is made of materials the same as the pipe joint, and the lock catch is in a sector structure. An inner end face of the lock catch is in a spline tooth space structure, and an outer end face of the lock catch is in an arc shape. An elliptical hole is formed in the middle of a sector, and is used for fixing the lock catch on a shell body of an accessory through a screw.

Description

technical field [0001] The invention relates to a pipe joint locking device, which is mainly used in occasions with large vibration or high temperature. Background technique [0002] At present, in order to lock the pipe joints used between several interface pipe joints, safety holes are usually opened on the pipe joints, and then locking wires are drawn out in the safety holes for locking. This locking method is complicated due to the product structure. The position between the assembled pipe joints is crowded, which is not conducive to the connection and disassembly of the pipe joints, and in the environment of vibration and high temperature, the locking wire is easy to break, and the pipe joints will cause slack, eccentricity, etc., so this kind of pipe joints The fastening effect of the locking method is poor, which affects the reliability of use. Contents of the invention [0003] The purpose of the present invention is to provide a pipe joint locking device with hig...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to lock the pipe joints used between several interface pipe joints, safety holes are usually opened on the pipe joints, and then locking wires are drawn out of the safety holes for locking. This locking method is complicated due to the product structure. The position between the assembled pipe joints is crowded, which is not conducive to the connection and disassembly of the pipe joints, and in the environment of vibration and high temperature, the locking wire is easy to break, and the pipe joints will cause slack, eccentricity, etc., so this kind of pipe joints The fastening effect of the locking method is poor, which affects the reliability of use

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