| 摘要 |
PCT No. PCT/FI91/00288 Sec. 371 Date Mar. 10, 1993 Sec. 102(e) Date Mar. 10, 1993 PCT Filed Sep. 23, 1991 PCT Pub. No. WO92/05047 PCT Pub. Date Apr. 2, 1992.The invention relates to a platform body covering mechanism comprising a flexible cover and pulling devices operating in conjunction with each other, which pull the cover over the platform body and off it. The pulling devices comprise a pulling cable wire for pulling the cover over the platform body and a drum around which the cover is wound when it is removed from over tile platform body. At the edge of the cover is formed a reinforcement the end pieces of which move in the guides st the sides of the platform body. The guides are made curved so that they are closer to each other at the center part of the platform body. Thus, the reinforcement will bend upwards to form a curve at the center part of the platform body, so that the cover can be brought over the platform body even where the load placed on the platform body is higher than the sides of the platform body. |
