The invention discloses a follow-up rudder ball which comprises a rudder ball fixing seat and a rudder ball end socket, a flow guide cambered surface is arranged on the edge of one side of the rudder ball end socket, the rudder ball fixing seat is used for being fixed to a rudder blade, and the rudder ball end socket is rotationally installed on the side, facing a propeller hub cap, of the rudder ball fixing seat, so that when the rudder blade deflects, the rudder ball is driven by the flow guide cambered surface to rotate. And the rudder ball end socket can rotate along with the rudder ball end socket, so that the flow guide cambered surface deviates to the deflection direction of the rudder blade. When the rudder blade deflects, the rudder ball end socket rotates along with the rudder blade under the pushing of water flow, so that the flow guide cambered surface deflects to one side where the rudder blade deflects, generation of vortex at the rear of the side can be reduced based on the arrangement of the flow guide cambered surface, and then cavitation damage is reduced. Meanwhile, only one side of the rudder ball end socket is provided with the flow guide arc face, the thinning amount of the rudder ball can be reduced, the rectification effect on water flow is guaranteed to the maximum degree, and therefore energy loss caused by turbulent flow behind a propeller hub cap is reduced.
本发明公开一种随动舵球,包括舵球固定座和舵球封头,所述舵球封头的一侧边缘设有导流弧面,所述舵球固定座用于固定于舵叶上,所述舵球封头转动安装于所述舵球固定座面向桨毂帽的一侧,从而实现所述舵叶偏转时,所述舵球封头能够跟随旋转,使所述导流弧面偏向于所述舵叶偏转的方向。当舵叶偏转时,在水流的推动下,舵球封头也会跟随旋转,使得导流弧面偏向于舵叶偏转的一侧,基于导流弧面的设置可以减少该侧后方涡流的产生,进而降低空泡危害。同时,本方案的舵球封头只于一侧设置导流弧面,可以减少对舵球的削薄量,最大程度上保障对水流的整流效果,从而减少由于桨毂帽后方紊流而导致的能量损失。
Follow-up rudder ball
一种随动舵球
2023-07-21
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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