| 摘要 |
The device (1) has a frame (3) sectionally provided with a traversable covering (5). The frame is two times long as a width (B) of a bus installation pit (21) to be covered. A disk element (7) is movably mounted in the frame. The disk element is displaced relative to the frame in two positions. The disk element is completely arranged in a covering free area of the frame in one of the positions, and completely covered by the covering in the other position. A bush conveyor chain is arranged between the disk element and the frame. The disk element includes a girder profile made of plastic. |
