Boat hook apparatus for single-pivot lifeboat

Abstract

The present invention discloses a boat hook apparatus for a single-pivot lifeboat. The boat hook apparatus comprises a suspension hook, a support pin, two side plates, an unhooking mechanism, a locking device, an unlocking mechanism, a mounting plate and a safety latch. According to the structure of the apparatus, the locking device, the unlocking mechanism and the unhooking mechanism are coordinately cooperated, and the possibility that the boat hook is accidently unhooked during the lifeboat lowering process is eliminated due to the fact that a locking pin is abutted against a lower swing rod of the suspension hook under the effect of a spring. When on-load unhooking is required, the locking pin is downwardly pressed by the unlocking mechanism and is prevented from blocking unhooking of the suspension hook, and unhooking is carried out through operation of the releasing mechanism. Resistance moment, which is generated by frictional force between a suspension ring and the suspension hook and is required to be overcome when on-load release is carried out, can be effectively reduced by offsetting a certain distance between the rotation center of the suspension hook and the bearing axis of the suspension hook. The apparatus has the characteristics that the apparatus is reasonable in design and simple in structure, locking is safe and reliable when bearing a load, and unhooking is laborsaving, and on-load release operation requirements of the single-pivot lifeboat hook can be satisfied.

Description

technical field [0001] The invention relates to a boat hook device for a lifeboat, in particular to a boat hook device used for a lifeboat with a single lifting point for on-load release. Background technique [0002] As an important tool for ship safety and lifesaving, the lifeboat carries the means of lifesaving when a shipwreck occurs. The performance of the lifeboat hook has always been concerned by the International Maritime Organization, the flag state, the port state and the classification society. The reliability and safety of the lifeboat hook play a key role in the safety of personnel when the lifeboat is released. [0003] The single lifting point boat hook refers to a boat hook device and a decoupling mechanism integrated, which is suitable for small lifeboats or rescue boats. The early single-lift point boat hook is a "dead hook", and the way to unhook can only be manually unloaded under no-load condition after the lifeboat is lowered to the water surface. Aft...

AI Technical Summary

Problems solved by technology

However, when the weight of the lifeboat reaches several tons, it is necessary to overcome the resistance moment generated by the large friction force. For the single lifting point boat hook, the boat hook and the decoupling operating device are integrated into one body, and the lever ratio is only increased by enlarging the lever ratio. Uncoupling torque is limited by the size of the structure

Images