Drilling and hoisting integrated forward and reverse circulation drilling machine

The utility model discloses a drilling and hoisting integrated positive and negative circulation drilling machine which comprises a drilling machine part, a winch part, a variable amplitude part, a drill rod hoisting machine and a power part, a steel crawler belt is installed on the lower portion of a vehicle body, the drilling machine part comprises a vertically-arranged hoisting arm main arm, a power head hoisting mechanism is assembled at the upper end of the hoisting arm main arm, and a power head variable frequency motor is installed on the hoisting arm main arm. A drill rod is installed on an output shaft of a power head reduction gearbox at the lower end of the power head variable frequency motor, a drill bit is installed at the end of the drill rod, pulley blocks are installed on the power head hoisting mechanism and the power head variable frequency motor respectively, the winding part comprises a winch, and one end of a steel wire rope is connected with the power head hoisting mechanism and the powe