The invention discloses a rotatable cantilever crane for erecting bridge sections and a method for erecting a steel box girder. The rotatable cantilever crane for bridge segment erection comprises a main framework, a crane carriage, a rotating mechanism and a lifting appliance, the main framework comprises two longitudinal main beams, a front cross beam and a rear cross beam are connected between the two longitudinal main beams, and a middle stand column and a rear stand column are connected to the lower portions of the middles and the lower portions of the rear ends of the longitudinal main beams correspondingly; the lower end of the middle stand column and the lower end of the rear stand column are both fixedly connected with the bottom frame, the bottom frame is movably matched with the walking track, supporting jacks are arranged on the lower portion of the front end and the lower portion of the rear end of the bottom frame, and a first main inclined supporting rod and a second main inclined supporting rod are detachably connected between the longitudinal main beam and the bottom frame. The hoisting trolley is movably arranged between the two longitudinal main beams, the lifting appliances are connected to the lower portion of a winch pulley block of the hoisting trolley through rotating mechanisms, and leveling jacks are arranged on the lifting appliances.
本发明公开了一种用于桥梁节段架设的可旋转悬臂吊机及架设钢箱梁的方法。用于桥梁节段架设的可旋转悬臂吊机包括主构架、起重小车、旋转机构、吊具,主构架包括两根纵向主梁,两根纵向主梁之间连接有前横梁和后横梁,纵向主梁的中部下方和后端下部分别连接有中立柱和后立柱,中立柱和后立柱的下端均与底部框架固定连接,底部框架可动地与走行轨道配合,底部框架的前端下部和后端下部均设置有支撑千斤顶,纵向主梁和底部框架之间可拆卸地连接有第一主斜撑杆和第二主斜撑杆,起重小车可移动地设置在两根纵向主梁之间,吊具通过旋转机构连接在起重小车的卷扬机滑车组下部,吊具上均设置有调平千斤顶。
Rotatable cantilever crane for erecting bridge sections and method for erecting steel box girder
用于桥梁节段架设的可旋转悬臂吊机及架设钢箱梁的方法
2025-02-14
Patent
Electronic Resource
Chinese
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