Underground automatic door device

The underground automatic door device comprises a door frame and a door body located in the door frame, the door body is rotationally connected with the ground through a rotating shaft, the underground automatic door device further comprises a door handle installed on the back face of the door body,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XU LI, ZHANG XINGYUAN, MA XIAOGUANG, LI XU, ZHANG YONG, LI ZHENSEN, SUN NINGJIE, ZHANG QIANG, WANG YANTAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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Beschreibung
Zusammenfassung:	The underground automatic door device comprises a door frame and a door body located in the door frame, the door body is rotationally connected with the ground through a rotating shaft, the underground automatic door device further comprises a door handle installed on the back face of the door body, and the door handle is a cavity with an opening; a first connecting rod perpendicular to the plane where the door frame is located is fixedly connected to the door above the door handle, the free end of the first connecting rod is connected with a fixed pulley, one end of a pull wire is connected with the door frame, and the other end of the pull wire bypasses the fixed pulley to be connected with a load. And the load can move up and down in the cavity. The device is simple in structure, practical and suitable for being installed on underground dustproof doors, air doors and other places. When a person passes, the gravity of a load is overcome to do work, and the door is opened; after the person passes, the load f