| 摘要 |
<p>The invention relates to a double-walled platform comprising a double-walled lower part (3) which is fill-able with a load, a cover part (5) covering the lower part, and a supporting frame connected with the lower part. The lower part comprises an inner wall (7) and an outer wall (9) connected with the inner wall and the frame. Stationary air is enclosed between the outer wall and the inner wall. The inner wall comprises a channel-shaped curved main portion (11) and front and rear end wall portions (25, 27) connected with the main portion. Supporting portions (34) of the frame are connected with the main portion and support the same. The outer wall comprises a plastic layer (17). <IMAGE></p> |
