Power generation device based on sea wave and tide dual utilization

The utility model relates to the technical field of tidal power generation, and discloses a power generation device based on sea wave and tide dual utilization, which comprises a device shell, swing grooves are arranged on two sides of the device shell, swing arms are arranged in the swing grooves, and a floating ball is fixedly mounted at one end of each swing arm. According to the power generation device based on sea wave and tide dual utilization, swing grooves are formed in the two sides of the device shell, gears and toothed plates are arranged in the swing grooves, along with swing of floating balls on the sea surface, the gears drive the toothed plates and first pistons to swing up and down in the device shell, and piston motion compression is conducted on air in first inflation cavities; and the bottom end of the connecting pipe is fixedly connected with a second air inflation cavity, and a second piston, a connecting rod and a balance weight ball are arranged in the second air inflation cavity, so th