Drill pulling apparatus

The utility model discloses a drill rod pulling device, which is characterized in that the drill rod pulling device comprises a clamp and a locking device. The clamp has two U-shaped clamping plates which are connected by the locking device. The clamp is locked at the flange position of steel drill...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LU YOUKUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING MINING OR QUARRYING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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