A locking nut and its loosening monitoring device

By increasing the friction of the threaded pair through the design of the annular washer and anti-loosening part, and combined with the resistance monitoring device, the problem of unsatisfactory anti-loosening performance in high-speed vibration environment is solved, realizing real-time monitoring and efficient anti-loosening, and improving the safety and reliability of the equipment.

CN118346695BActive Publication Date: 2026-06-30DALIAN INST OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN INST OF SCI & TECH
Filing Date
2024-05-08
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing anti-loosening methods are not ideal in high-speed vibration environments, and there is a lack of effective loosening monitoring methods, which affects the safety and reliability of equipment.

Method used

The axial and radial forces between the annular washer and the anti-loosening part increase the self-locking friction of the threaded pair. Combined with a simple monitoring device, the loosening status is fed back in real time. The monitoring components include a rubber ring and a resistance wire, which detect loosening by changing the resistance.

Benefits of technology

It improves the anti-loosening effect of threaded connections, ensures that they remain locked under vibration conditions, and can monitor loosening in real time, thereby improving the safety and reliability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides an anti-loosening nut and its loosening monitoring device, including an anti-loosening part, an upper annular washer, a lower annular washer, a locking part, and a monitoring component. The bottom of the anti-loosening part has a first groove, in which the upper annular washer is embedded. The top of the locking part has a second groove, in which the lower annular washer is embedded. The upper annular washer and the lower annular washer are in contact connection. The monitoring component is sleeved on the outside of the upper annular washer and the lower annular washer. The first groove and the second groove have equal cross-sectional diameters at all points. This invention can generate axial and radial forces through the interaction between the annular washer and the anti-loosening part, thereby increasing the self-locking friction of the threaded pair and having an excellent anti-loosening effect. At the same time, it can still produce a certain anti-loosening effect after the thread has loosened. In addition, this invention has a simple and efficient detection device that can provide real-time feedback on the loosening status, improving safety and reliability.
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