Gantry type supporting main beam special for tunnel lifting

A gantry type supporting main beam special for tunnel lifting comprises two spaced bearing beams, and a connecting beam is fixed between the two bearing beams. Each bearing beam comprises a horizontal part, inclined parts matched with a tunnel in shape are arranged at the two ends of each horizontal...

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Bibliographische Detailangaben
Hauptverfasser:	FENG SHIXI, GUO XIANLI, GAO GUOQIN, CHEN HAIFENG, GAO MINGLI, ZHANG SHIJIE
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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