Mechanical arm drilling machine for tunnel

The utility model discloses a mechanical arm drilling machine for a tunnel, which comprises a supporting base, a direction adjusting seat arranged in the middle of the supporting base, a supporting bedplate arranged at the upper end of the direction adjusting seat, a mechanical arm arranged at the upper end of the supporting bedplate, a grabbing and lifting head arranged at the top end of the mechanical arm, and a drilling machine arranged at the front end of the grabbing and lifting head. A telescopic oil cylinder is arranged at the rear end of the drilling machine, and the side portion of the telescopic oil cylinder is connected with the front end of the grabbing and lifting head. The drilling machine has the advantages that the whole machine is hydraulically driven and electrically adjusted and is controlled by a remote controller, multi-degree-of-freedom actions can be achieved, the overall flexibility is improved, workers can conveniently and rapidly correspond to mark points needing to be drilled, the t