Gas compression device

A gas compression device includes a protective casing. A compressed air chamber is fixed on the protective casing and communicated with an air inlet pipe and an air outlet, a transmission component isdisposed in the protective casing, one end of the transmission component is connected with a driven rod for power input, and the other end is connected with a piston in the compressed air chamber. Alower fixing ring is fixed in the protective casing, a connecting frame is disposed in the lower fixing ring, a gear ring is fixed on the side of the protective casing, and the inner side of the gearring is a gear face. Compared with the prior art, the gas compression device has the advantages that the gas compression device is provided with unique transmission device to change originally input rotary motion into linear reciprocating motion of a convex column, the single-pass motion of the convex column can push the reciprocating motion of the piston and increase movement frequency of the piston, thereby improving air