公开(公告)号：US20220306429A1

公开(公告)日：2022-09-29

申请号：US17638314

申请日：2019-08-28

申请人： Shanghai Zhenhua Heavy Industries Co. Ltd

发明人： Xianhai Sun ,  Min Zhu ,  Hongya Su ,  Zhiwen Feng ,  Cong Jia

IPC分类号： B66C13/08 ,  B66C6/00 ,  B66C19/00

摘要： A boom extension device for a dockside container crane. A boom comprises a rear boom section (11) and a front boom section (12). The extension device comprises: an extension trolley tool (2) which is disposed below the rear boom section (11) and the front boom section (12) during an extension operation, and which comprises a wheel set (21), a trolley frame (22), a construction platform (23), and a movement track (24) disposed on the construction platform; a fits support frame trolley (31) disposed on the movement track (24) and used to carry a boom extension section (41) and guide the boom extension section (41) to move in a first direction; and a second support frame trolley (32) disposed on the movement track (24) and used to carry the front boom section (12) and guide the front boom section (12) to move in a second direction perpendicular to the first direction in a first plane. Further included is an extension method for a boom of a dockside container crane. The invention reduces usage of heavy-duty equipment.