| 摘要 |
<p>The tool (10) is for breaking rock material by means of under-cutting and comprises a cutting roller (12) and a pin plate (112). The cutting roller is rotatably located via bearing components on a fixture (11). It has crushing components and a rotation axis (CL). It incorporates two parts releasable from each other, i.e. a holder (40) and a pin plate, together with a wire. The holder and the pin plate incorporate all-round running tracks (23A,23B) which together enclose a wire holding the pin plate on the holder.</p> |
