Air swelling shaft structure

The utility model discloses an air swelling shaft structure, and relates to the technical field of air swelling shafts. A cavity extending into the shaft body is formed in the center of one side of the shaft body, a connecting shaft is fixedly installed on one side of the shaft body, a plurality of air inlet cavities are formed in the shaft body, a second air inlet hole is formed in one side of the bottom end in each air inlet cavity, and a channel is formed in one side of each air inlet cavity. A first air inlet hole is formed in the connecting position of the air inlet cavity and the channel, a second spring assembly is fixedly installed at the bottom end in the channel, an ejector rod is slidably connected into the channel, an ejector plate is fixedly installed at the top end of the ejector rod, and external air enters the main air inlet channel in the air inlet main pipe and enters the air inlet cylinder through a through hole. The gas generates thrust on the circular plate, the circular plate is jacked u