| 摘要 |
<p>The present invention relates to an apparatus for treatment of stumps, and particularly, for cutting up, extracting and cleaning tree stumps, comprising a stump extraction grapple (3) mounted onto a turning device (2) attached to the basic machine crane (I), the frame (4) of said grapple comprising stump-splitting blades (6) with a sharpened leading edge attached by articulated joints (5), the first set of actuators (7) for turning the stump-splitting blades (6) for the purpose of splitting the stump in between, extraction arms (10) mounted onto the stump-splitting blades (6) for pulling out stumps, and second set of actuators (9) for operating the extraction arms. In the apparatus according to the invention surface plates (8) are attached to the lower edge of the stump-splitting blades (6), and compression arms (11) are attached to the frame (4), with said arms having a sharpened leading edge to split the stump, and to which compression arms (11) are attached holding arms (14). Furthermore, the apparatus includes a third set of actuators (13) to turn the compression arms, said compression arms (11) and holdings arms (14) are arranged to press the stump parts against the angle formed by the cutting blades (6) and the surface plates (8) for the duration of the extraction, lifting, and cleaning of tree stumps.</p> |
