Rotary drilling rig and power head device thereof

The utility model discloses a rotary drilling rig and a power head device thereof. The power head device comprises a power head body and a rotary supporting device arranged on the power head body, the rotary supporting device comprises a rotary part which is connected with a drill rod of the rotary...

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Bibliographische Detailangaben
Hauptverfasser:	LIU GUOJUAN, BAI FANXIONG, XIE LEI, WANG JIAYANG
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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Beschreibung
Zusammenfassung:	The utility model discloses a rotary drilling rig and a power head device thereof. The power head device comprises a power head body and a rotary supporting device arranged on the power head body, the rotary supporting device comprises a rotary part which is connected with a drill rod of the rotary drilling rig and capable of rotating together with the drill rod. Due to the arrangement, the power head device of the rotary drilling rig has the advantages that friction between the drill rod and the power head device can be effectively reduced, and impact of the drill rod on the power head device can be avoided.