Reinforcing and fixing structure for rotating shaft of flap-type rudder of ship

Abstract

The invention provides a reinforcing and fixing structure for a rotating shaft of a flap-type rudder of a ship. Notches with the same height are formed in a hinge shaft penetrating through a main wing lug plate and a lining, and the bottom surface of the notch of the hinge shaft is an inclined surface; and at least one conical through hole is formed in the main wing lug plate in the thickness direction in a penetrating mode, a wedge-shaped lock pin which transversely penetrates through the hinge shaft and the opening of the lining at the same time is arranged in each conical through hole, and the wedge-shaped lock pins make close contact with the inner walls of the conical through holes and the inclined face of the hinge shaft. Waterproof mechanisms are arranged at the two ends of the conical through hole to seal the conical through hole. The wedge-shaped lock pin penetrates through the main wing lug plate, the lining and the hinge shaft from the side face, the effect of effectively fixing the hinge shaft can be achieved, meanwhile, the strength loss of the hinge shaft is minimum when the wedge-shaped lock pin penetrates through the middle relative to the position, and due to the fact that the hinge shaft only needs to be provided with a small notch and is sealed through epoxy resin, corrosion of the fixing pin shaft is avoided.

Description

technical field [0001] The invention relates to a flap rudder of a ship, in particular to a strengthening and fixing structure for a rotating shaft of a ship flap rudder. Background technique [0002] Flap rudder is to make the rudder blade into two parts, the main wing and the aileron. When the main wing rotates an angle α, the aileron follows the main wing and at the same time rotates with the help of the transmission device, so as to turn another angle β relative to the main wing, thereby improving the rudder effect . [0003] Due to the frequent rotation between the aileron and the main wing of the flap rudder, the requirements for the hinge axis 1 are very high, and the strength of the hinge axis 1 is required to be better, and the rotation is flexible. The exposed end of 1 is equipped with a sealing plate 3, and then the sealing plate 3 and the hinge shaft 1 are fixed by bolts 2, thereby limiting the rotation of the hinge shaft. [0004] The disadvantage of the prior...

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Problems solved by technology

[0003] Due to the frequent rotation between the aileron and the main wing of the flap rudder, the requirements for the hinge axis 1 are very high, and the strength of the hinge axis 1 is required to be better, and the rotation is flexible. The exposed end of 1 is installed with a sealing plate 3, and then the sealing plate 3 and the hinge shaft 1 are fixed by bolts 2, thereby limiting the rotation of the hinge shaft

[0004] The disadvantage of the prior art is that when the main wing and aileron of the flap rudder are installed, a circle of bolts 2 needs to be used to fix them, and the space here is narrow, which makes the installation inconvenient. They are all directly submerged in seawater, which is easy to corrode and rust, which makes it inconvenient to operate in the later disassembly and maintenance. At the same time, the performance of the bolt 2 will be reduced after corrosion, and there will be a risk of falling off, which will cause problems with the rotation of the aileron and the main wing, and even produce ailerons. risk of shedding

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