| 摘要 |
Technical Sector: Mechanical Engineering and Civil Engineering - Construction of Buildings and Towers. Autoliftable Bridge Crane System which makes lifting, moving and positioning of loads, in the construction of tall buildings and towers, constituted by bridge cranes (01 ) that run over longerons (04) supported by a set of frames linked to the structure under construction, lifting itself by its own resources at each stage of the building or tower structure execution. After ending the execution of the building or tower, the upper bars of the frames are removed, and then the invent steps down involving the building or tower, using just its own resources, until reach the level where will be disassembled; it can be used during the descent as support of scaffolds for external finishing and cleaning of the building or tower.
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