| 摘要 |
<p>The bead breaking unit (1) for tyre changing machines comprises an arm (2) having a bead breaking tool (4) and associated rotatable with a supporting structure (3), actuator means (6) having a mobile element (7) associated sliding with the arm (2), dragging means (10) for dragging the arm (2), associated with the mobile element (7) and suitable for operating during the movement of the mobile element (7) from an extracted position to a retracted position to bring the arm (2) to the work position, temporary coupling means (10, 12, 13, 14, 15) between the mobile element (7) and the arm (2), and selection means (11) associated with the temporary coupling means (10, 12, 13, 14, 15) and suitable for operating/disconnecting the temporary coupling means (10, 12, 13, 14, 15).</p> |
