Rotary V-shaped bilge keel provided with guide vanes

Abstract

The invention discloses a rotary V-shaped bilge keel provided with guide vanes. The V-shaped bilge keel comprises a V-shaped rotary plate, wherein the V-shaped rotary plate comprises a V-shaped cover plate and a plurality of inner cross beams arranged in the same plane in parallel at intervals; the outer cover plate adopts a flat and straight plate, and one end of the outer cover plate and one end of each inner cross beam are jointly and fixedly connected with a rotating shaft; the outer cover plate and the inner cross beams are arranged in a V-shaped manner, a bow support box and a stern control box are arranged at two ends of the rotating shaft respectively and fixed on a ship bilge strake, one end of the rotating shaft is connected with a rotating shaft rotation driving device mounted on the stern control box, a plurality of vanes are arranged between the V-shaped rotary plate and the ship bilge strake and rotationally connected to vane limiting holes in the bow support box and the stern control box through vane supporting shafts mounted on the vanes respectively, and the inner cross beams can rotate around the rotating shaft under the drive of the driving device and are attached to the vanes. With the adoption of the device, the bilge keel can be folded in a limited navigation channel or small storm waves, and damage caused by grounding, collision and the like is prevented.

Description

technical field [0001] The invention relates to a ship appendage structure, a bilge keel that can be changed according to different environmental sea conditions, in particular a rotating V-shaped bilge keel with guide blades for reducing ship rolling. Background technique [0002] The study of ship stability is a very important and complex subject in the ship industry. Stability is one of the most important performances of ships, the basic guarantee for safe navigation of ships, and one of the main contents of ship inspection. [0003] Ships often sail in waves when sailing. In order to meet the stability requirements, designers will reserve a certain margin when considering stability. In actual situations, waves have a great influence on the stability of ships, and sometimes, the reserved margin cannot ensure that the stability of ships meets the safety requirements. [0004] Due to the large width-to-draft ratio (B / t) and large outreach of modern ship types, although thei...

AI Technical Summary

Problems solved by technology

[0012] In addition, the bilge keel structure is too simple, usually a simple straight line or a closed V-shape, and the anti-rolling effect is generally around 10%-20%, which is difficult to meet the demand

[0013] For a certain bilge keel, due to the fixed shape and size of the bilge keel, dynamic adjustments cannot be made in response to changes in sea conditions and the priority of roll angle and acceleration, which greatly affects its application range

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