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1.超起装置结构根据大跨度和大负荷吊装作业需要,大型履带起重机可加装能改变吊臂受力状况、减少吊臂变形的超起装置。超起装置主要由扳起架、臂架式超起桅杆和超起配重组成,扳起架上放置超起配重,在扳起架和主臂之间安装超起桅杆,超起桅杆与超起配重相连。目前履带起重机较常用的超起装置有2种结构:一种是轮式超起装置,
1. Super lifting device structure According to the needs of large span and heavy load hoisting operations, large crawler cranes can be installed to change the force condition of the boom and reduce the deformation of the boom super-lifting device. The lifting device is mainly composed of a wedging frame, an arm-type super-rising mast and a super-lifting counterweight. A super-lifting counterweight is placed on the wedging frame, a super-rising mast is installed between the wedging frame and the main arm, Super weight connected. The current crawler cranes more commonly used super-lifting device has 2 kinds of structures: one is wheeled super-lifting device,