Perforating device

The utility model discloses a punching device which comprises a fixing cylinder, a punching motor is installed on the top of the fixing cylinder in a threaded connection mode, an output shaft of the punching motor is fixed to a rotating shaft of a punching rotary cutter through a coupler, the punchi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YI CHUNJIANG, WANG KUN, LI QIQI, CUI CHONGCHONG, LEI BO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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