Helicopter cargo touch-and-go automatic opening of the hook, helicopter and hanging method

By designing an X-shaped hook and latch, combined with a torsion spring and an empty lock, the hook can be automatically opened using the weight of the cargo. This solves the problems of complex structure and power supply in existing technologies, ensures the safe release of cargo, and improves flight safety and transportation efficiency.

CN117533502BActive Publication Date: 2026-04-10ZHONGHANG ELECTRONIC MEASURING INSTR (XIAN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-09
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing helicopter hooks have complex structures, require power supply, have high control costs, and the slings may damage cargo, affecting flight safety. They are also difficult to open automatically without a passive system.

Method used

The hook and latch adopt an X-shaped structure, combined with a torsion spring and an unloaded lock, to automatically open the hook using the weight of the cargo. The structure is simple, requires no power supply, and relies on the weight of the cargo for self-locking.

Benefits of technology

It enables automatic hook opening in the absence of a passive system, ensuring the safe release of cargo, avoiding structural complexity and power supply issues, and improving flight safety and transportation efficiency.

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Abstract

The application discloses a kind of automatic opening hook of helicopter cargo ground contact, helicopter and hanging method, hook and the middle part of shackle cross articulates, torsional spring is arranged at articulation, and hook and shackle top are articulated with sling by connecting rod;Shackle is installed with empty load lock by top part side surface, and lock pin and lock tongue are set in empty load lock, and in empty load lock slidingly set, lock pin and lock tongue are respectively connected with lock pin spring and lock tongue spring between empty load lock, and lock tongue front end extends empty load lock shell;Hook is provided with protruding block by top part side surface, and the working surface of protruding block is oppositely arranged with lock tongue front end, and the working surface of protruding block is provided with sequentially connected first plane, first inclined plane, step, second plane, second inclined plane and third plane, and first plane, second plane and third plane are parallelly arranged and gradually close to lock tongue front end;Lock tongue is provided with parallel hole with lock pin, and when lock tongue front end contacts third plane, hole is coaxial with lock pin.
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Citation Information

Patent Citations

  • Helicopter cargo grounding automatic opening lifting hook and helicopter

    CN221520006U