A propeller protection device

Abstract

The invention relates to a propulsion device for underwater vessels, particularly to a protection device for a propeller. The protection device comprises the propeller and a stern shaft, wherein the propeller comprises blades and a propeller hub; blade sawteeth and sawtooth covers which cover the blade sawteeth and are connected with guide edges in a sliding manner are arranged on the guide edgesof the blades; and a driving device which controls the sawtooth covers to slide on the guide edges and to be accommodated in an accommodating cavity is arranged in the propeller hub. The protection device has the beneficial effects that the blade sawteeth are arranged on the guide edges of the blades, and winding objects are cut through rotation of the propeller while the propeller rotates; the sawtooth covers are arranged, normal operation of the propeller is guaranteed during normal sailing of the vessels, and the situations that the propeller generates a lot of cavities due to the fact thatthe blade sawteeth are irregular in shape and normal operation of the vessels is affected are avoided; and the driving device is additionally arranged in the propeller hub to control collection and releasing of the sawtooth covers.

Description

technical field [0001] The invention relates to a propeller protection device for various ships traveling in water, relates to a marine propeller protection and propulsion device which is entangled or hindered by various entanglements, and specifically relates to a propeller protection device. Background technique [0002] The propeller itself has unpredictable and serious consequences on marine life such as divers, frogmen, seals and dolphins. So far, there is no effective solution at home and abroad. With the progress of modern ocean activities, the marine environment continues to deteriorate, and garbage in the ocean floats When the ship is sailing in the water, the propeller of the ship is easily entangled by the floating objects in the water (such as aquatic plants, fishing nets, cables, etc.), which affects the normal operation of the propeller. Can cause ship to lose power sometimes, cause major accident, so, be badly in need of a kind of effective solution based on a...

AI Technical Summary

Problems solved by technology

[0002] The propeller itself has unpredictable and serious consequences on marine life such as divers, frogmen, seals and dolphins. So far, there is no effective solution at home and abroad. With the progress of modern ocean activities, the marine environment continues to deteriorate, and garbage in the ocean floats When the ship is sailing in the water, the propeller of the ship is easily entangled by floating objects in the water (such as aquatic plants, fishing nets, cables, etc.), which affects the normal operation of the propeller.

Sometimes it will cause the ship to lose power and cause a major accident. Therefore, based on the above situation, an effective solution is urgently needed

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