Controllable pitch propeller capable of improving rudder effect

Abstract

The invention relates to a controllable pitch propeller capable of improving a rudder effect. The invention provides the controllable pitch propeller capable of improving the rudder effect. The controllable pitch propeller capable of improving the rudder effect comprises a propeller shaft and propeller hubs; the two ends of the propeller shaft are main engines connected with the propeller hubs; atotal separate type pitch control mechanism is arranged at the tail end of the propeller shaft; the total separate type pitch control mechanism comprises blade root bearing discs, slide blocks, push-pull rods and connecting keys; the push-pull rods are transitional from the propeller shaft, are divided into four parts and adopt dovetail joint structures; and each two push-pull rods are connected with each other. The slide blocks and the blade root bearing discs are arranged on the push-pull rods; the slide blocks are connected with the blade root bearing discs through the connecting keys; andthe slide blocks are in non-tight connections with both the push-pull rods and the blade root bearing discs. The controllable pitch propeller capable of improving the rudder effect has the advantagesthat the rudder effect in the ship sailing process can be effectively improved, the structure is simple, convenient and flexible, the layout is compact and the controllable pitch propeller is especially suitable for medium and large ships.

Description

technical field [0001] The invention belongs to the technical field of ship engineering, and in particular relates to an adjustable-pitch propeller capable of 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 requir...

AI Technical Summary

Problems solved by technology

However, the traditional controllable pitch propeller can only realize the equal pitch adjustment of all blades. Although this adjustment method can effectively improve the reverse and parking performance of the ship, it cannot effectively improve the rudder effect of the ship, and its structural design is cumbersome. The transmission relationship is complicated and it is very inconvenient to maintain

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