Double-column well lid lifting hanger

The invention discloses a double-column type well lid lifting hanger which comprises an upper device body device, a lower device body device and a lifting device, the upper device body device is connected with symmetrically-arranged fixing legs, and the fixing legs are connected with first angle mea...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WU JIWEI, ZHANG QIANBIN, QIAN QIANGQIANG, YANG QUNHUA, ZHOU YU, CHEN CHAOJIE, ZHENG XUEBING, SUN QI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CRANES HAULING HOISTING LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES PERFORMING OPERATIONS TRANSPORTING
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