Ship propeller

Abstract

The invention relates to the field of shipbuilding industry, in particular a ship propeller. The ship propeller includes a bottom plate, an underwater gear box, a rotary mechanism, a telescopic mechanism and a control system; A placing hole is arranged at that tail part of the bottom plate of the ship, the hollow rotating shaft penetrates the place hole, one end of the hollow rotating shaft located on the bottom plate of the ship is sequentially connected with the propulsion motor through a spline shaft and a linkage, and the other end of the hollow rotating shaft is connected with the gear ofthe underwater gear box, and the underwater gear box is provided with a propeller; The rotary mechanism is used for rotating the propeller, and the telescopic mechanism is used for moving the propeller up and down. The control system is used for automatically controlling the operation of the rotary mechanism and the telescopic mechanism. The ship propeller of the invention can automatically expand and contract the propeller up and down according to the water consumption of the ship, and can arbitrarily adjust the rotation angle of the ship.

Description

technical field [0001] The invention relates to the field of shipbuilding industry, in particular to a ship propeller. Background technique [0002] The driving device of the existing ship mainly includes two parts, the propeller and the rudder plate. When the propeller rotates forward, the ship is pushed forward, and the rudder plate is used to control the driving direction of the ship. Existing marine propellers cannot be stretched up and down, cannot effectively adapt to complex terrain, and cannot be applied to navigation areas with large draft changes. When the draft of the hull is relatively deep and the propeller sinks into the water, the thrust obtained by the propeller will be reduced and the main engine will be "lightly loaded" because the flow velocity on the water surface is greater than that under the water. Some propellers use oil cylinders to drive the propellers up and down to adapt to draft changes, but the installation and maintenance costs of oil cylinder...

AI Technical Summary

Problems solved by technology

Some propellers use oil cylinders to drive the propeller up and down to adapt to changes in draft, but the installation and maintenance costs of oil cylinders are high, and the hydraulic oil also has the problem of polluting river water, which does not meet the requirements of today's society for environmental protection.

At present, although there are propellers with telescopic function, they need to be controlled manually, and the maximum thrust cannot be accurately obtained.

[0003] When the ship needs to go back, the propeller must first stop rotating, and then reversed to make the ship go back. This step takes a long time. During this period of time, the ship will continue to move forward for a certain distance due to inertia. In emergency situations such as dangerous objects, ships are prone to accidents such as collisions

Moreover, the adjustment angle of the rudder plate is small, it is difficult for the ship to control the direction of entering and leaving the port, and it is easy to hit the surrounding facilities of the port and cause damage to the hull

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