Fin limiter for ultra-miniature fin stabilizers

Abstract

The invention discloses a fin-tilting limiting device for an ultraminiature fin stabilizer. The device comprises a fin shaft fixing assembly and a ship body fixing assembly which are connected with each other, wherein the fin shaft fixing assembly is fixedly connected with a fin shaft of the fin stabilizer and can rotate coaxially with the fin shaft; the ship body fixing assembly is fixedly installed on a ship body and is kept static all the time relative to the ship body; and the ship body fixing assembly comprises an angle limiting block and a base fixing plate, the fin shaft fixing assembly comprises a pull plate and an end surface press plate, and the angle limiting block is matched with the pull plate in a positioned manner. The device has the benefits as follows: the device is purely mechanical and high in limiting reliability; and the maximum fin-tilting angle limited by the device is adjustable and can be set as required temporarily before fin stabilizer products leave factories.

Description

technical field [0001] The invention belongs to the technical field of ship fin stabilizers, and in particular relates to a fin rotor limiting device for ultra-small fin stabilizers. Background technique [0002] Fin stabilizers belong to ship stabilizer devices, among which, ultra-small stabilizer fins refer to non-retractable (also called fixed) stabilizer fins with a fin area of ​​less than 1 square meter. The cost of ultra-small stabilizer fins is low, but the market demand is relatively large, and they are often manufactured in batches. When mass-produced products are serialized (divided into different specifications), generally, the fewer the number of specifications, the easier it is to manufacture. The technical specifications of fin stabilizers are often divided according to the size of the single fin area, and the small fin stabilizers with a single fin area of ​​0.1 square meters to 1.0 square meters usually have no more than 10 specifications. Due to the streng...

AI Technical Summary

Problems solved by technology

When the fin-rotating limiting device does not work (the above two situations), or when the fin-rotating limiting device fails (for example, only relying on the control signal for limiting), the fin-rotating angle may be too large at some moments ( greater than the angle expected by the control command), the actual moment generated by the fin may exceed the theoretical anti-rolling moment calculated according to the required anti-rolling capacity

There are two consequences, one is to overload the fin stabilizer device, which will affect the service life and reliability of the device, and the other is to make the ship tilt to one side instantly, which will affect the comfort of the passengers

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