Openable ventilation shaft cover

The utility model relates to the technical field of ventilation well covers, and discloses an openable ventilation shaft cover which comprises structural foundations, a shaft mouth arranged between the structural foundations, and a first cover plate and a second cover plate which are arranged at the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI HUI, CHEN HAO, WANG ZHONGXIN, LIU YANG, WANG CHUNYAN, LIU HUI, SU LIJIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BUILDING EMBANKMENTS EXCAVATIONS FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:	The utility model relates to the technical field of ventilation well covers, and discloses an openable ventilation shaft cover which comprises structural foundations, a shaft mouth arranged between the structural foundations, and a first cover plate and a second cover plate which are arranged at the top of the shaft mouth, an anti-falling mechanism is arranged in the well mouth, a plurality of first angle steel bars are arranged on the periphery of the top of the well mouth, hinges are arranged between the first cover plate and the first angle steel bars and between the second cover plate and the first angle steel bars respectively, and one end of the first cover plate and one end of the second cover plate are hinged to the first angle steel bars through the hinges respectively. Connecting rings are arranged at the ends, away from the hinges, of the first cover plate and the second cover plate, supporting rods are arranged on the connecting rings, and the supporting rods are movably connected with the connect