| 摘要 |
The frame (1) has a side part (3) articulated on a fixed central part (2) between an operating position and a retracted transport position in which the side part is partially placed above the central part. The side part has an element engaging with a cam to force the side part to occupy the operating position, and another element forming a partial blocking unit that partially blocks the side part in the operating position, where the elements are rollers. The side part has a side plate mounted on an arm (8). The elements are carried by a locking part that is removably mounted on the side plate. |
