A heating coil hoisting tool

By designing lifting fixtures with adjustable lugs and counterweights, the problems of instability and safety in traditional lifting methods were solved, enabling the safe and efficient lifting of heating coils in the cargo holds of large oil tankers.

CN122233276APending Publication Date: 2026-06-19CHENGXI SHIPYARD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGXI SHIPYARD
Filing Date
2026-04-24
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional hoisting methods are difficult to use safely, stably, and efficiently to hoist heating coils in the cargo holds of large oil tankers. They can also easily lead to load imbalance, tilting, swaying, or rotation, threatening operational safety and potentially damaging the coil structure.

Method used

Design a heating coil hoisting fixture, which uses a hanger composed of multiple I-beams, equipped with detachable lifting lugs and a counterweight adjustment mechanism, combined with an electric slide rail and a buffer mechanism to achieve flexible adjustment of the lifting point and collision buffering.

Benefits of technology

It improves the stability and safety of hoisting operations, adapts to the efficient hoisting of coils of different specifications, reduces the risk of collision damage, and ensures the reliability of precision hoisting in complex environments.

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Abstract

This invention relates to the field of shipbuilding technology and discloses a heating coil lifting fixture, comprising a lifting frame assembled from multiple individual I-beams. The I-beams are detachably connected by high-strength bolts. A counterweight adjustment mechanism is provided near both sides of the top of the lifting frame. Two lifting lugs are slidably connected to each side of the top of the lifting frame. A positioning component is provided between the lifting lugs and one side of the lifting frame. Anti-collision buffer mechanisms are provided at all four ends of the lifting frame. By setting a counterweight box that can slide along the lifting frame and lifting lugs whose positions can be independently adjusted, the fixture can flexibly adapt to heating coil units of different sizes and weights. Before lifting, the lifting points can be quickly adjusted according to the coil specifications. During the initial lifting process, the counterweight can be quickly adjusted to match the center of gravity of the lifting frame with that of the coil, effectively preventing uneven loading and swaying during lifting. This significantly improves the stability and safety of the lifting operation and achieves universal and efficient lifting of coils of different specifications.
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