Crotch type base of hydraulic support for coal mines

The invention discloses a crotch type base of a hydraulic support for coal mines. The crotch type base comprises a crotch type base body, a pushing rod arranged at the crotch position of the crotch type base along the longitudinal direction and two bottom lifting devices arranged on the crotch type...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YANG WENMING, HUANG GUI, SANG CHONGFENG, ZHANG JINGKUI, ZHANG JIYE, NI HEPING, ZHANG GUOZHI, GONG YU, CHEN GE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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