External retractable shaftless propulsion device for naval ship

Abstract

The invention discloses an external retractable shaftless propulsion device for a naval ship. The external retractable shaftless propulsion device comprises a driving controller, an electric cylinder,a rotating arm, a propeller and a hole sealing cover plate; the driving controller is arranged in a cabin and connected with a motor of the electric cylinder through a cable; the electric cylinder, the rotating arm and propeller are arranged in a hull cavity; a transmission rod of the electric cylinder is connected with the propeller through the rotating arm; the motor of the electric cylinder isconnected with a hull through a first hull base; the rotating arm is connected with the hull through a second hull base, and the rotating arm is hinged to the second hull base; the hole sealing coverplate is connected with the rotating arm, and the hole sealing cover plate is matched with an opening of the cavity; and the motor is controlled to work through the driving controller, the transmission rod is driven to move through the motor, the rotating arm is driven to rotate and move through the transmission rod, thus the hole sealing cover plate is in an opening state to make the propeller extend out of the cavity. According to the external retractable shaftless propulsion device for the naval ship, the situation thata large holepenetrates through the cabin is not needed, and the vibration noise is low.

Description

technical field [0001] The invention belongs to the field of ship propulsion devices, in particular to an external retractable shaftless propulsion device for ships. Background technique [0002] The propulsion device is an important part of the ship's power system, which is used to realize the ship's sailing propulsion. Existing propulsion devices generally consist of a motor, a transmission shaft, and a propeller. The motor is arranged in the cabin, and the propeller outside the hull is driven to rotate through the transmission shaft that penetrates the cabin, thereby realizing navigational propulsion. This type of propulsion device has a long drive train and a lot of equipment, and takes up a lot of overall resources. The hull needs large openings, the propulsion efficiency is low, and it is easy to cause vibration and noise. At present, an integrated propulsion device has also appeared on the market, and the integrated propulsion device fixedly arranges the propeller ou...

AI Technical Summary

Problems solved by technology

This kind of propulsion device has a long drive train and many equipments, which takes up a lot of overall resources, requires large openings in the hull, has low propulsion efficiency, and is easy to cause vibration and noise

At present, there are also integrated propulsion devices on the market. This integrated propulsion device fixedly arranges the propeller outside the hull. Although this arrangement is simple, it destroys the outer line shape of the ship and increases the navigation resistance.

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