Enhanced impact-resistant pulley

The utility model relates to an oilfield workover operation tool, in particular to an enhanced impact-resistant pulley. The lower end of an impact-resistant plate is connected with a damping spring; the lower end of the damping spring is connected with a pulley body; a component force wheel is mount...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YU KAIXUN, ZHANG LINPENG, LIU HAIBO, FAN LIJUN, SHAO JUNLING, GUAN PEIYUAN, YU HAIJUN, SU RONGSEN, YU QINGRONG, LI QINGLE, LIU YANG, TANG JIAXIN, ZOU ZHENGUANG, WU DELONG, KONG JINWEI
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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