Height-adjustable end wall winged knife for gas compressor

The invention discloses a height-adjustable end wall winged knife for a gas compressor. The height-adjustable end wall winged knife for the gas compressor comprises a casing of the gas compressor, a winged knife sliding rail, a limiting stopper, two groups of driving gears, two groups of variable-diameter sliding rail gears, a winged knife assembly and a power element, wherein the variable-diameter sliding rail gears are arranged on the outer wall face of the casing of the gas compressor in a sleeving mode; the axial movement of the variable-diameter sliding rail gears in the casing of the gas compressor is limited by the limiting stopper; variable-diameter sliding grooves are formed in gear center plates of the variable-diameter sliding rail gears; a winged knife sliding groove is formed in the winged knife sliding rail; winged knife blades are arranged on a winged knife support; the two ends of the winged knife support are arranged in the variable-diameter sliding grooves; a driving gear is arranged on the