A propeller for improving rudder efficiency

Abstract

The invention belongs to the technical field of marine engineering, and specifically relates to a propeller capable of improving rudder efficiency, including a propeller shaft, the two ends of the propeller shaft are connected by a shaft plate and a propeller hub, and multiple sets of hydraulic mechanism groups are arranged on the propeller shaft, and each group of hydraulic mechanism groups It includes two hydraulic units, each with an internal gear hydraulic pump, each gear hydraulic pump is connected to the power supply system through a motor, each gear hydraulic pump is equipped with a hydraulic oil circuit, and each hydraulic oil circuit It is connected with one end of the piston connecting rod, and the other end of the piston connecting rod is connected with the propeller hub, and is located on the left and right sides of the propeller hub. The invention can effectively improve the rudder efficiency during the sailing process of the ship, the control mode is exquisitely designed, the control precision is high, the energy utilization rate is high during the operation process, and it is especially suitable for medium and large ships. Compared with the prior art, the structure is simple and flexible, the layout is compact, and the shipping cost can be effectively reduced. Moreover, the system structure design of the present invention is novel, easy to implement, and suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of ship engineering, and in particular relates to a propeller for improving rudder efficiency. Background technique [0002] A marine propeller refers to a device that converts the rotational power of the engine into propulsion by rotating the blades in the air or water. There may be two or more blades connected to the hub, and the rear side of the blades is a helical surface or is similar to a helical surface A marine propeller. Under the premise that the internal combustion engine is still the mainstream power device of the ship, the position of the propeller is almost unshakable. However, since the second half of the last century, with the continuous development of material science and fluid mechanics, various new ship propellers have come out one after another. challenge. At the same time, with the increasing informatization and automation of port transportation, higher requirements are placed on the ...

AI Technical Summary

Problems solved by technology

In this context, various improved propellers that pursue high efficiency have emerged, such as the adjustable pitch propeller CPP that can be traced back to the 1920s and 1930s, the contra-rotating propeller CRP equipped with real ships in 2004, As well as the high skew propeller HSP developed for special needs, etc., but there are very few people who can really improve the rudder effect. Among them, although the power configuration of multi-engine and multi-propeller can effectively prevent the cavitation phenomenon and improve the rotatability of the ship, but High energy consumption and complex power system; although the pod propeller has good maneuverability, but the main engine is arranged outside the hull, the safety is not strong, and the transmission power is not high, so it cannot be applied to large ships

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