Patent ID: 7562526

Claim:
A wave power generating device, comprising a lifting pillar ( 90 ) installed on a floating platform ( 10 ), a sleeve ( 80 ) covered outside said lifting pillar ( 90 ), a first and second ratchet wheel mechanisms installed on said sleeve ( 80 ); wherein a external circumference of said lifting pillar ( 90 ) is engaged with a inner circumference of said sleeve ( 80 ) via screw threads, thereby said sleeve ( 80 ) rotates along a first direction or a second direction with the rises and falls of the lifting pillar ( 90 ); the first or second ratchet wheel mechanisms comprises an inner wheel with multiple pawls and an outer wheel with corresponding multiple ratchets on its inner circumference, the inner wheel of the first or second ratchet wheel mechanisms is fixed on said sleeve ( 80 ) and rotates with the sleeve ( 80 ), the outer wheel of the first or second ratchet wheel mechanisms drives a corresponding power generator to generate power; the pawls and the ratchets of the first ratchet wheel mechanisms are engaged with each other to make the outer wheel ( 71 ) and inner wheel of the first ratchet wheel mechanism rotating together along the first direction when the lifting pillar ( 90 ) is rising, the pawls and the ratchets of the second ratchet wheel mechanisms are engaged with each other to make the outer wheel ( 61 ) and inner wheel of the second ratchet wheel mechanism rotating along the second direction when the lifting pillar ( 90 ) is falling.