| 摘要 |
<p>The present invention relates to a rock drill for an excavator which is coupled to an arm end portion of an excavator and is used to punch a ground and, more specifically, to a rock drill for an excavator using inexpensive air pressure as a power source, performs a punching operation more deeply although advance and reverse ranges of the punching load are more than the longitudinal length of the frame to be miniaturized, and maximizes an operation range at one position. The rock drill device for an excavator using air pressure comprises: a mount frame which is mounted on the arm of an excavator; a support frame which includes a post for coupling the mount frame and a mount plate perpendicularly connected on both sides of the post; a rail which connects the mount plate on both sides; a carrier which moves along the rail; a punching load which punches the ground; a pneumatic drill which drives the punching load and is mounted on the carrier; a first pneumatic cylinder which moves the carrier along the rail; and a second pneumatic cylinder which moves the first pneumatic cylinder along the rail.</p> |
