Telescopic propeller system capable of being maintained in ship

Abstract

The invention discloses a telescopic propeller system capable of being maintained in a ship. The telescopic propeller system comprises a propeller mounting area which is provided with a lower supporting structure and a hull structure platform, and a structural box body which is used for fixing a propeller and arranged in the propeller mounting area through a hydraulic lifting cylinder. When the structural box body descends to touch the lower supporting structure and stops moving, the underwater part of the propeller is just completely exposed out of the ship, and a pin opening position in a lower locking structure right corresponds to a pin position of the structural box body. When the structural box body rises to touch the hull structure platform and stops moving and the underwater part of the propeller is retracted into the ship, a pin opening position in an upper locking structure corresponds to the pin position of the structural box body. When the propeller breaks down, personnel only need to retract the propeller and enter the hull structure platform to maintain the propeller, and the cost for propeller fault maintenance is greatly reduced.

Description

technical field [0001] The present invention relates to a ship propeller, more specifically, relates to a retractable propeller system capable of in-ship maintenance. Background technique [0002] The propellers generally used in dynamic positioning of ships or marine engineering can be divided into two types: fixed type and telescopic type. The fixed type propeller is that the propulsion blades and the shroud part of the main body of the propeller are fixedly installed on the hull; As for the telescopic thruster, the main propulsion blade and the shroud part can be retracted, and the underwater part of the propeller (the main propulsion blade and the shroud part) can be retracted or pushed out into the hull through the push and pull of the hydraulic cylinder as required. , its main purpose is to recover the propellers that are not involved in the propulsion of the ship or ocean engineering from the outside of the hull to the hull when the ship or ocean engineering is naviga...

AI Technical Summary

Problems solved by technology

[0003] Ships or offshore projects that use retractable propellers usually have a short time at sea. If the propeller fails, the propeller will not be disassembled, repaired or replaced at sea. The main reason is that the main propulsion blade and the shroud The connection between some parts and the telescopic structure is special, and it is difficult to dismantle it at sea

For those projects that need to work at sea for a long time without interruption of operation, if the propeller fails during the operation, the propeller can only be disassembled, repaired or replaced at sea. For such projects, only conventional propellers can be used. , in the construction process, only the underwater installation of the propeller at sea can be considered, which will increase the construction cost of the project

At the same time, after the propellers of these projects are installed, because the propellers are suspended outside the hull during the voyage, the propellers increase the resistance of the ship or ocean engineering during the voyage, which also increases the cost of the project’s sea migration

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