Streamline rudder sleeve

Abstract

The invention discloses a streamline rudder sleeve. The streamline rudder sleeve is of a hull structure located above a rudder blade and is composed of an external steel plate structure extending upward from the outside of the rudder blade and an internal sleeve structure; the upper portion of the external steel plate structure is connected with a hull, and the lower portion of the external steel plate structure surrounds the external diameter of a rudder stock and extends downward to the position above the taper of the rudder stock; the sleeve is fixedly connected to the interior of the external steel plate structure; the rudder stock penetrates through the sleeve, a first lining is arranged on the inner wall of the lower portion of the sleeve, and the lower portion of the rudder stock is matched with the first lining; a second lining is arranged on the inner wall of the upper portion of the sleeve, and the upper portion of the rudder stock is matched with the second lining. By means of the streamline rudder sleeve, the intense denudation effect to adjacent components caused by the rudder cavitation bubble phenomenon is avoided, the streamline rudder sleeve not only plays a role of a traditional rudder sleeve but also transmits and diffuses part of force to the hull structure, due to the buffer effect of the streamline rudder sleeve, stress of the rudder stock is weakened obviously, the effect of decreasing the diameter dimension of the rudder stock is achieved, and streamline can guarantee rapidity and controllability of a ship.

Description

technical field [0001] The invention relates to a streamlined rudder sleeve, which belongs to the field of ship steering system component manufacturing. Background technique [0002] At present, the complete steering system of existing ships generally includes: rudder arm castings, rudder arm rudder knobs, rudder blades, rudder blade castings, rudder stock and steering gear, etc. The rudder arm is made of steel castings , the rudder stock drives the rudder blades to rotate through the steering gear, and the rudder stock and rudder blades are connected by casting taper holes or flange bolts. [0003] The existing traditional rudder system design, ships with a gross tonnage of more than 500 tons, all adopt the original design of steel castings with rudder arms. The total weight of the rudder system accounts for a relatively large proportion of the weight of the empty ship. Not only is the rudder steering efficiency low, but also when sailing, due to the influence of the rudde...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention provides a streamlined rudder sleeve, which can solve the problem of excessive bearing force of the rudder stock through the rudder sleeve after canceling the cast steel structure of the rudder arm. Thick rudder stock to meet the design requirements, while reducing the weight of the empty ship, simplifying the installation steps, while ensuring high efficiency, energy saving and fast sailing performance

Images