Raise boring machine with balanced thrust

The utility model discloses a thrust balanced raise boring machine which comprises a positioning plate, positioning holes are formed in the four corners of the positioning plate, a penetrating hole is formed in the center of the positioning plate, a drill rod body is arranged at the penetrating hole...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LEI JIANAN, GUO ZHIHUI, JIANG GUIXIANG, JIANG SHUWANG, LI ZHIPING, WANG XIAOWEN, WANG FUYUAN
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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