Forced nail type bidirectional stirring drill bit

The utility model relates to a forced nail type bidirectional stirring drill bit which is characterized in that an outer drill rod is sleeved on an inner drill rod, the rotation directions of the outer drill rod and the inner drill rod are different, and a gap between the outer drill rod and the inn...

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Bibliographische Detailangaben
Hauptverfasser:	LI CHENGCHANG, SHI YAN, DAI GUANG, HONG JUN, CHENG LIU, WANG MENG, GE YAMING, ZHUANG QUANFANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:	The utility model relates to a forced nail type bidirectional stirring drill bit which is characterized in that an outer drill rod is sleeved on an inner drill rod, the rotation directions of the outer drill rod and the inner drill rod are different, and a gap between the outer drill rod and the inner drill rod forms a guniting port; a frame-shaped support is fixed on the outer drill rod, the lower end of the frame-shaped support is sleeved on the inner drill rod, forward rotating blades are installed on the outer drill rod in a multi-layer staggered mode on the installation area of the frame-shaped support, reverse rotating blades are installed on the inner drill rod in a multi-layer staggered mode on the installation area of the frame-shaped support, and at least one layer of reverse rotating blades is installed on the inner drill rod below the frame-shaped support. The forced nail-type bidirectional stirring drill bit has the beneficial effects that the forced nail-type bidirectional stirring drill bit can