Gear-rack type top drive lifting system

The utility model provides a gear-rack type top drive lifting system comprising a derrick, a suspension system, a walking system, a top drive and a supporting system. The top drive is fixedly connected to the position under the suspension system through a suspension connecting rod of the suspension...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIU YINGBIN, ZHANG QI, YANG GUOHE, TAN ZHU, DUAN YUNJIANG, XIAO RENYONG, LIU SHUANGWEI, ZHOU JIAN, ZHAO GUIYING, WANG LINQIANG, XU LIAN, CHENG FUTIAN, JIA HAIMIN
Format:	Patent
Sprache:	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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