| 摘要 |
The surface has two or more medium-filled lengthwise hoses, on which cross-bars (2) are guided in the direction of the load. A cushion is mounted on the bars, and an underframe (19) has lengthwise beams supporting the hoses. The cushion extends over and beyond the hoses and between the underframe sides. The bars can be guided in slots (3) formed in ribs (4, 5) extending along the underframe, their height (h) being greater than the depth for which they generate into the slots. Guide members can be fixed to the bars or underframe, and in which guide bars on the underframe or cross-bars work. Stops can be provided on the guide bars, to limit the movement of the cross-bars to and fro. |
