| 摘要 |
<p>A multi-shank ripper excavation tool has a body mounted from an arm, e.g. a dipper stick or boom arm, and at least first and second shanks mounted to the body. Each shank is perpendicular to a rotation axis of the tool, and each shank includes a ripper tooth positioned for ripping engagement with a substrate. The shanks and ripper teeth are laterally spaced apart along the rotation axis relative to the arm, and the ripper teeth are angularly spaced apart in a direction of substrate ripping motion. In some implementations, plates are mounted to span a region between shanks, behind the teeth in a ripping motion direction, and define, with the shanks, a bucket volume for receiving material ripped from the substrate. Methods for ripping excavation of a substrate employing the excavation tools mounted on a dipper stick or a boom arm are also described.</p> |
