Spiral digging drilling machine

The utility model provides a spiral digging drilling machine, including rotating platform and the back landing leg device of setting on rotating platform, back landing leg device is including the supporting seat of back landing leg and installation back landing leg, the supporting seat is fixed on rotating platform, the supporting seat includes supporting baseplate and the last side shield that lies in the supporting baseplate top, back landing leg is including preventing falling the board and lieing in the mounting panel of preventing falling the board below, the board of preventing falling lies in the top of side shield, the mounting panel is located the below of supporting baseplate, the supporting baseplate is equipped with first fixed orifices, the mounting panel be equipped with with first fixed orifices complex second fixed orifices, be equipped with the fastener in first fixed orifices and the second fixed orifices with supporting baseplate and mounting panel fixed connection. The utility model discloses a spiral digging drilling machine's back landing leg device has the ability of bearing great load, and overall machine stability is better, has improved the pore -forming precision to avoid the bolt atress of counter weight and fixed counter weight, promoted spiral digging drilling machine's security.