Movable positioning anti-loosening structure of underwater hoop connector

Abstract

The invention provides a movable positioning anti-loosening structure of an underwater hoop connector. The movable positioning anti-loosening structure comprises a handle, an axial pre-tightening bolt, a push shaft, a push shaft fixing plate, a push shaft limiting plate, an anti-loosening fixing block, a rotary guide seat and a screw. The improvement is that a rotary guide groove is arranged on the rotary guide seat, a rotary guide column is arranged on the anti-loosing fixing block, the rotary guide column can spirally descend in the rotary guide groove along the central axis of the rotary guide seat, and finally the rotary guide column rotates to the two side faces of a rectangular groove on the anti-loosing fixing block to be clamped with the two side edges of a square head of a pull-inbolt, so that the position is kept still. And meanwhile, the handle continues to rotate and descend with the axial pre-tightening bolt and the push shaft connected with the handle under the action ofa remote control robot (ROV) until the push shaft abuts against a rotary guide block, so that limitation on the pull-in bolt is completed, and looseness prevention is completed.

Description

technical field [0001] The invention relates to an anti-loosening structure, in particular to a movable positioning anti-loosening structure of an underwater clamp connector. Background technique [0002] The three-lobed horizontal clamp connector relies on the bolt to lock the three-lobed clamp. The bolt itself has a certain self-locking ability. In order to prevent vibration from making the self-locking invalid and increase its reliability, the existing thread is due to its The structure has good self-locking performance, and it is a commonly used fastening type anti-loosening and locking structure. However, threaded connections may be subjected to all kinds of variable loads under working conditions, including extremely severe vibration and shock loads. Under the action of fluctuating load, the failure of threaded connection is usually caused by its own loosening and fatigue damage. In general, the anti-vibration loosening life of the threaded connection is much shorter...

AI Technical Summary

Problems solved by technology

However, in areas where submarine earthquakes occur frequently, it is easy to cause frictional anti-loosening to become loose due to vibrations, and factors such as friction coefficient and pre-tightening force are less reliable than mechanical anti-loosening and permanent anti-loosening.

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