| 摘要 |
<p>The assembly has a guide roller (1) with a central roller (6) mounted to rotate freely on a rolling and guiding shaft (2), and two shrouds (7, 8) mounted on the sides of the roller (6). The roller (6) and the shrouds rotate freely around the shaft independent of each other. The central roller rolls on an upper surface (18) of a guide rail (16), where the surface is laterally limited by two longitudinal round edges (21, 22).</p> |
