Automatic rod changing system of three-degree-of-freedom drilling machine

The utility model discloses a three-degree-of-freedom drilling machine automatic rod changing system which comprises a drilling rod bent frame, a transverse moving mechanism, a lifting mechanism, a swing mechanism and a clamping mechanism, the transverse moving mechanism is arranged at the lower end of one side of the drilling rod bent frame, the lifting mechanism is arranged at the upper end of the transverse moving mechanism in a sliding mode, and the swing mechanism is arranged on the surface of the lifting mechanism. A clamping mechanism is arranged on one side of the slewing mechanism; according to the top drive type power head drilling machine drill rod replacing system, full automation of drill rod replacing work of a top drive type power head drilling machine is achieved, the drilling process becomes smooth and fast, manpower and material resources are saved, potential safety hazards are reduced, the drill rod replacing efficiency is greatly improved, and the top drive type power head drilling machine