FIELD: construction.
SUBSTANCE: manhole cover is formed by method of direct intrusion in a single stage and represents a spatial structure of the main plate of manhole cover and additional plate of lower diametre, combined with each other by means of radial stiffening ribs. In radial stiffening ribs there is a locking system arranged from disk fixators and elastic elements designed so that guaranteed locking force is maintained.
EFFECT: development of simple and reliable locking device, easier manufacturing, assembly and maintenance, increased reliability of manholes.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MANHOLE COVER OF UNDERGROUND UTILITIES | 2018 |
|
RU2734687C2 |
| INSPECTION CHAMBER HATCH | 2007 |
|
RU2361040C1 |
| ACCESS CHAMBER HATCH | 2005 |
|
RU2278215C1 |
| OBSERVATION WELL HATCH | 2022 |
|
RU2789254C1 |
| MANHOLE HATCH (VERSIONS) | 2015 |
|
RU2588096C1 |
| INSPECTION WELL HATCH | 2006 |
|
RU2307213C1 |
| METHOD FOR INSPECTION WELL HATCH MANUFACTURING | 2006 |
|
RU2307214C1 |
| METHOD OF LOCKING THE HATCH OF A WELL INSTALLED ON ABOVEGROUND AND UNDERGROUND NETWORKS AND STRUCTURES | 2020 |
|
RU2743982C1 |
| WELL HATCH WITH HEIGHT AND TILT ADJUSTABLE DURING OPERATION | 2012 |
|
RU2504619C1 |
| INSPECTION WELL MANHOLE | 2010 |
|
RU2425925C1 |
