Gas-liquid linkage drilling machine for coal mine

The gas-liquid linkage drilling machine for the coal mine comprises a protective shell, an auxiliary assembly used for assisting drilling is placed in the protective shell, a dust raising prevention assembly used for preventing dust is placed on the side edge of the auxiliary assembly, and an adjusting assembly used for adjusting the motion amplitude is placed below the dust raising prevention assembly. A temperature conversion bin used for dehumidification is formed in the protection shell. The drilling efficiency of the auxiliary assembly is adjusted through the adjusting assembly, the included angle between a transmission piece and a connecting piece is adjusted through an L-shaped sliding rod, the larger the included angle is, the deeper the drilled hole is, meanwhile, the reciprocating sliding amplitude of a drilling tool is increased, disintegrating slag left in the deep position of the hole and in a hole channel can be discharged, and on the contrary, the smaller the included angle is, the shallower th