| 摘要 |
<p>The invention relates to a V-belt drive (1) with a first part (20) that can be provided with a machining tool, and a second part (30), with both parts (20, 30) arranged in such a way that said parts (20, 30) can move in opposite directions to each other, and with at least one force returning device that can engage with or be engaged by both parts (20, 30), and with a third part (10) that is connected to the first part (20). The at least one force returning device has no return spring and has at least one device for the actuation and/or support for the returning of the one part (20) and/or for the increase of the applicable returning force during the returning of the one part (20) during the upward travel of the third part (10).</p> |
