Calibrating device for mine exploration drilling machine

The utility model belongs to the technical field of calibration for mine exploration drilling machines, and particularly discloses a calibration device for a mine exploration drilling machine, which is characterized in that a connecting plate is arranged on the outer side of a drilling machine body, a limiting piece is arranged at the bottom of the connecting plate, a reinforcing rod is arranged on the outer side of the limiting piece, and a sealing cap is arranged on the top of the limiting piece; a laser pen is arranged at the top of the sealing cap; a drilling bit for drilling is enclosed through the laser pens, so that light emitted by the four laser pens during drilling can clearly see the position where the drilling bit needs to be drilled, when the laser pens are damaged or powered off, the laser pens can be easily taken down through the sealing caps and the through holes, and the multiple limiting pieces are connected through the sliding blocks and the sliding grooves, so that the laser pens are conve