Wave power generation pile foundation platform mechanism with protection cave

The utility model discloses a wave power generation pile foundation platform mechanism with a protection hole, which belongs to the technical field of ocean engineering. The wave power generation pile foundation platform mechanism comprises a platform, energy conversion cylinders, a platform protection hole, an energy capture floating barrel, a supporting pile and a guide column, wherein the two energy conversion cylinders are mounted on the platform; piston rods of the two energy conversion cylinders are connected with the energy capture floating barrel through an opening on the platform protection hole; the guide column is arranged in a through hole of the energy capture floating barrel and is parallel to and closely clung to the through hole; the lower end surface of the platform protection hole forms a concave hole, so that the mechanism can be protected in severe sea conditions; and the platform protection hole is connected with the bottom of the sea through the supporting pile. In severe sea conditions, the heights of waves exceed the allowed value, the energy conversion cylinders automatically lift up the energy capture floating barrel, and the energy capture floating barrel leaves from the surface of the sea and is recovered in the protection hole for protecting; and due to the arrangement of the guide column, the surges can be prevented from distorting the piston rods and damaging the energy capture floating barrel, so that the resistance to wind waves is good and the reliability is high.