| 摘要 |
<p>The subject invention relates to cover for shaft, especially cover for road shaft are located for example, node of power lines, telecommunication lines etc, at which is the cover assigned and positional kept in the frame, which is anchored in the ground or in the road. At this it is foreseened after the invention, that is in the central area of reversed side of the cover (1) facing the shaft and between every pair of other against other perpendicularly arranged ribs (5), a blocking device (9) is arranged, to which accesses with the service key through service opening (10), designed in the area directly above mentioned blocking device (9), at which the mentioned blocking device (9) longitudinal moves pair of blocking bars (11,12), which are built to the mentioned blocking device (9) and are arranged directly by the surface of cover (1), which is turned to the shaft.</p> |
