| 摘要 |
<p>There is described an excavator tool (9) mounted to an arm (6) of an excavator for penetrating paving or asphalt without the need first to break up the paved surface. The excavator tool (9) comprises mounting means for pivotally mounting the tool to the arm for pivoting movement about a pivot axis (10), means for rotating the tool relative to the arm (6) about the pivot axis, a convex surface (22; 30; 70) arranged substantially concentrically with the pivot axis, a number of cutting elements (28; 48; 62; 75) arranged on the convex surface, the cutting elements having respective cutting tips arranged to project radially from the convex surface. In an advantageous embodiment, the excavator tool (9) is an excavator bucket with cutting elements (28) on its sole plate (22). An attachment for a conventional bucket to convert it to an excavator tool is also described.</p> |
