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.