Double -deck manhole door of formula that enters

Double -deck manhole door of formula that enters

The utility model relates to a double -deck manhole door of formula that enters comprises door frame, inlayer plain batton door, internal door sealing strip, internal door screw rod, inside little platform, outside little platform, outer thermal insulating door thermally insulated door, outer door s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: ZHAO ZHEYI
Format: Patent
Sprache:eng
Schlagworte:
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL
FIXED CONSTRUCTIONS
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES
LADDERS
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Beschreibung
Zusammenfassung:The utility model relates to a double -deck manhole door of formula that enters comprises door frame, inlayer plain batton door, internal door sealing strip, internal door screw rod, inside little platform, outside little platform, outer thermal insulating door thermally insulated door, outer door sealing strip and outer door screw rod, its characterized in that: the interior frame size of door frame is the same basically, inside little platform of peripheral hardware and outside little platform in the door frame to leave the one section distance in door frame lower part, after opening outer thermal insulating door thermally insulated door and lifting the inlayer plain batton door off, general constructor squats down the body and can stride into in the door frame.