Inflation device

The utility model relates to the technical field of air charging devices, in particular to an air charging device, and aims to solve the problem that a nitrogen charging device is fixed in structure. In order to achieve the purpose, the inflation device comprises an air inlet assembly used for being connected with an air source; a limiting part is arranged on the limiting piece; the air inflation assembly comprises a plurality of air inflation pieces, the air inlet ends of the air inflation pieces communicate with the air inlet assembly, and the air inflation pieces are arranged on the limiting part and can move along the limiting part so that the positions of the air inflation pieces can be adjusted. The inflating piece can move along the limiting part of the limiting piece, so that the position of the inflating piece can be adjusted. Furthermore, the distance between the multiple inflation parts of the inflation assembly can be adjusted, and therefore the inflation assembly can adapt to the inflated parts o