STRUCTURE OF PROPULSION MACHINE PART OF HYDROJET PROPULSION VESSEL

摘要

PURPOSE:To secure the superior rudder effect even in the low speed navigation, prevent the breakage of a rudder, and easily pull up the rudder in the high speed navigation by installing the rudder in turnable manner around a horizontal shaft, keeping a suspended state by a spring, and installing a turn driving means. CONSTITUTION:The suspended state of a rudder 82 is maintained by a spring 91, and the rudder oscillates in the horizontal direction and develops a turning force, even if a vessel body 10 is set at a low speed and the turning force by the jet force supplied from a deflector 6 becomes insufficient. When an obstacle 100 collides with the rudder 82, a moment in the counterclockwise direction acts, and a spring 26 is compressed, and the spring 91 is extended, and the rudder 82 turns in the counterclockwise direction, and breakage is prevented. When the vessel body 10 travels at a high speed, the operating cable 24 in an outer cylinder 22 is steered from a driver's seat, and an inner cylinder 23 is advanced. Accordingly, the rudder 82 is turned as shown by the supposed line through a piston rod 25, joint line 27, and a connecting rod 82c, and raised on the water level. In the state where the vessel body 10 stops, a jet unit 3 is raised by the operation of a hydraulic cylinder 50.