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

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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