Multidirectional hydraulic drill rig with floating rotary device

The invention provides a multidirectional hydraulic drill rig with a floating rotary device and relates to a drill rig for extracting and draining mine gas. The multidirectional hydraulic drill rig with the floating rotary device comprises a walking device, a rotary mechanism, a drilling mechanism and a hydraulic pump station, wherein the rotary mechanism is arranged on the walking device; the drilling mechanism is arranged on the rotary mechanism; the rotary mechanism comprises a floating base plate, a rotary platform and a supporting spring; the floating base plate is arranged on the walking device through the supporting spring; a turnplate bearing is arranged between the floating base plate and the rotary platform; a supporting table fixed on the walking device is arranged below the rotary platform; and a top plate telescopic supporting post is arranged on the rotary platform. During drilling, the top plate telescopic supporting post and the supporting table clamp and fix the rotary platform to keep the ro