| 摘要 |
<p>The device has a frame (10), and a shaking arc (40) deformed in inflection. An actuation unit (68) actuates the arc, and a contact strip (54) is mounted to move in translation with respect to the arc. The frame includes an upstream side arm (16) and a downstream side arm mounted to pivot with respect to a support cross-piece (14) and secured to the shaking arc. The arms carry heads (28, 30) provided with tension rollers (32, 34) and guide rollers (36, 38) for tensioning and guiding the strip.</p> |
