VENTILATION APPARATUS IN TUNNEL

PROBLEM TO BE SOLVED: To provide a ventilation apparatus in a tunnel having a smoothly transferable extensible air duct even when installed in a tunnel having a large radius of curvature. SOLUTION: The ventilation apparatus includes an extensible air duct and the air duct is suspended from a movable...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HONDA JIYUNKOU, DOI SHIGETAKA, SATO MASAAKI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a ventilation apparatus in a tunnel having a smoothly transferable extensible air duct even when installed in a tunnel having a large radius of curvature. SOLUTION: The ventilation apparatus includes an extensible air duct and the air duct is suspended from a movable bracket 13 in the extensible drive unit. A belt member is attached on the joint of the movable bracket 13 with the extensible air duct along the extending direction of the air duct. Furthermore, a pin 30, which is interposed between the movable brackets 13 adjacent to each other, arranges the mutually adjacent movable brackets 13 on a curved line when the air duct contracts at the curved position. The pin 30 can be removed. COPYRIGHT: (C)2009,JPO&INPIT