Fireproof equipment hoisting opening

The invention discloses a fireproof equipment hoisting opening which comprises a frame, a plurality of cover plates and a cover plate rotating mechanism. The frame is arranged around the object hanging hole, and the cover plates are rotatably connected with the frame through the cover plate rotating...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YU BING, BAI WEI, NIU HUASI, JIANG SHOUCHAO, SONG SHASHA, WANG JINHUA, MA JUNBO, NI TING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BUILDING CEILINGS CHECKS FOR WINGS DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION 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 FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS KEYS LADDERS LOCKS ROOFS SAFES WALLS, e.g. PARTITIONS WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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