| 摘要 |
<p>The invention relates to the field of construction, and more specifically to manhole hatches for reservoirs of sewerage, water supply and gas networks, and also for telephone cable lines. A manhole hatch, comprising a cover, a body and a supporting plate, is proposed, in which a flexible and (or) elastic planking is mounted around the perimeter in a manner substantially flush with the above-mentioned cover and the road covering, and an internal opening in said planking is conical, with a generator angle which is substantially equal to the angle of inclination of ribs on the hatch body. The technical result is a reduction in icing over, and protection of the road covering and of the actual hatch structure from being destroyed by motor transport.</p> |
