| 摘要 |
<p>The scaffolding (1) comprises horizontal, rectangular platforms (2) lying on rung-type crossbars (12) of vertical columns (11) having longitudinal and/or diagonal struts (13). Pairs of castors (3) are mounted on the ends of extension members (15) which slide into traverses (16). Each traverse is in two parts (16a,16b) with an angle between them. Seen in plane view, these parts are symmetrical in relation to each other and inclined towards the inside. Each has an extension member (15) which slides on its axis obliquely in the outwards direction to increase width. <IMAGE></p> |
