Gravity penetration anchor

The invention relates to an anchoring structure of a deepwater mooring system of a large ocean floating platform, and discloses a gravity penetration anchor. The gravity penetration anchor comprises ahead anchor plate, a middle anchor plate, a tail anchor plate, a connecting shaft and a loading mechanism. The gravity penetration anchor freely falls in water by means of self gravity, obtains a certain speed when reaching the seabed surface and penetrates into seabed soil by a certain depth; and then a mounting cable is pulled, and the anchor is dragged and rotated to continue to be embedded downwards due to the design of double anchor shanks with the short front and the long rear. The comprehensive performances of a dragging embedded plate anchor and a gravity penetration anchor is integrated, so penetration installation is facilitated, and the better bearing performance is achieved. And the gravity penetration anchor has large burial depth and large effective bearing surface in seabed soil, and is uniform in