Energy-saving fishtail flap type rudder

An energy-saving, flap rudder technology, which is applied in the direction of steering with rudder, can solve problems such as energy saving and reduction of cavitation, and achieve the effect of improving lift coefficient, increasing maneuverability, and improving maneuverability.

Active Publication Date: 2016-12-07
WUXI DONGZHOU MARINE EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using the flap rudder, the maneuverability of the ship has been improved to a certain extent, but it cannot solve the problems of energy saving and cavitation reduction

Method used

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  • Energy-saving fishtail flap type rudder
  • Energy-saving fishtail flap type rudder
  • Energy-saving fishtail flap type rudder

Examples

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0028]As shown in the figure: the fishtail energy-saving flap rudder in the embodiment is mainly composed of ring screw 1, upper rudder bearing 2, upper rudder bearing 3, middle sleeve 4, rudder stock 5, lower rudder bearing 6, bushing 7. The lower sealing assembly 8, the hydraulic nut 9, the main rudder blade 10, the fairing cap 11, the hinge shaft 12, the empennage 13, the small shaft 14, the rocker sleeve 15, the rocker rod 16 and the bushing 17, etc.

[0029] Such as Figure 1~Figure 5 As shown, the upper rudder bearing seat 3, the middle sleeve 4 and the lower rudder bearing 6 are connected as a whole by welding, and are connected with the ship deck and ship structure by welding during installation, and the upper rudder bearing 2 is fixedly installed on the upper on the rudder bearing seat 3; the rudder stock 5 is mounted on the upper rudder support 2, th...

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Abstract

The invention relates to an energy-saving fishtail flap type rudder. The flap type rudder comprises a lifting bolt, an upper rudder bearing, an upper rudder bearing holder, a middle sleeve, a rudder stock, a lower rudder bearing, a bushing, a lower seal assembly and a main rudder blade. The flap type rudder is characterized in that the main rudder blade is divided into an upper part and a lower part from the central line of a corresponding propeller, the front end of the main rudder blade at the upper half part deviates towards one side relative to the horizontal central line of the main rudder blade, the front end of the main rudder blade at the lower half part deviates symmetrically towards the other side of the horizontal central line of the main rudder blade, a rectification cap is fixedly integrated at the front end of the main rudder blade and corresponds to the horizontal central line of the propeller in position; a tail wing is arranged at the rear part of the main rudder blade and connected with the main rudder blade through a hinging shaft, and the upper end of the tail wing is connected with the lower rudder bearing through a transmission mechanism for driving a flap to rotate. Compared with a conventional flap type rudder, the energy-saving fishtail flap type rudder has higher manipulation performance, has a cavitation bubble reduction function, can absorb energy of wake flow of the propeller and realizes an energy-saving effect.

Description

technical field [0001] The invention relates to a flap rudder, in particular to a fishtail energy-saving flap rudder, which belongs to the technical field of ship equipment. Background technique [0002] When a ship enters or leaves a port or navigates in a crowded channel, the ship is required to have high maneuverability, otherwise collision accidents will easily occur. According to the actual ship trial test, it can be known that the slewing test is carried out on a ship of about 200m, and the slewing diameter of the ship turning one circle is basically 4 to 5 times the length of the ship. After the flap rudder is adopted, the turning diameter of the ship for one revolution is basically 1.7~2.0 times the length of the ship. With the continuous increase of crude oil prices, the cost of shipping transportation has gradually increased. Taking a 50,000-ton bulk carrier as an example, basically each ship needs about 20-25 tons of crude oil per day. Due to the increase of tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H25/38
Inventor 宋勇荣樊岩
Owner WUXI DONGZHOU MARINE EQUIP CO LTD
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