Reaming device with reverse circulation air-hammer

The subject innovation is the use of the compressed air used in the drilling soil (including drilling ampyeon) generated during drilling at the same time as drilling by air hammer air hammer operating with a reverse circulation air hammer structure, which with a given cycle discharged from the drilling hole It relates to a drilling rig. Drilling apparatus having a reverse cycle air hammer structure of the present design is in that drilling with an air hammer conventional air hammer and the same, but can be when drilling thereof, and such that the excavation soil from entering the with circulation achene hammer case (digging soil and circulation ) it may have a different configuration and the configuration with a conventional air hammer drilling apparatus of the hammer case and the air hammer to ensure effectively excluding process with the pressurized air used in the air hammer operation. Moreover, the subject innovation proposes to take advantage of a common expansion drilling rigs capable of drilling a hole expandability hole drilling machine by configured to verify includes a known earth addition.