PORTABLE DRILLING APPARATUS

摘要

A drilling apparatus (10) for drilling underground, small diameter bore holes wherein a support frame of the apparatus is formed in part by a pair of hydraulic cylinders (12) arranged parallel one to another. A head mounting plate (20) that carries the drill motor (22) is releaseably attached to a barrel portion (30) of each hydraulic cylinder (12) and the barrel portion (30) is urged by fluid pressure along a support rod (28) extending axially through the barrel (30). The ends of the support rods are attached by front and rear supports (16, 18) to form a frame that is anchored in position relative to the movable barrel (30).