A hoisting screw anti-rust mechanism

By installing a sleeve structure on the lifting screw, filling it with dry gas, and using sealing measures, the problem of rust on the lifting screw in dark and humid environments is solved, thus extending its service life.

CN224315351UActive Publication Date: 2026-06-02ANHUI HONGZHI CONSTR GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI HONGZHI CONSTR GRP CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Lifting screws are prone to rust in dark and humid environments, which shortens their service life.

Method used

It adopts a sleeve structure, is filled with dry gas, and prevents humid air from entering through sealing measures, keeping the lead screw in contact with the dry gas and delaying corrosion.

Benefits of technology

It effectively prevents contact with humid air and extends the service life of lifting screws and expansion bolts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of screw rod rust prevention, and disclose a hoist screw rod rust prevention mechanism, including screw rod and fixedly arranged expansion bolt on the upper end of screw rod, the upper end of screw rod is connected with the top hat of thread, the top hat is connected with the sleeve pipe of thread, and the screw rod is arranged inside the sleeve pipe, the circumferential side wall of sleeve pipe is fixedly provided with the inflation port, the lower end of sleeve pipe is connected with the sealing nut of thread, the lower end of screw rod is sleeved with the crossbeam, and the crossbeam is fixed through the nut between the screw rod, the utility model makes the screw rod always contact with the dry gas in the inner ring of pipe body, and the corrosion speed of screw rod and expansion bolt is delayed.
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