Hydraulic support operating valve protector

The utility model discloses a hydraulic support operating valve protector belongs to the safety device field, the purpose be for solve prior art can not be when dropping in the face of waste rock or cinder effective protection handle the problem of valves. The utility model discloses a setting still...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GENG BIAO, DING YUEHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
Online-Zugang:	Volltext bestellen
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