Grua de concha, e, método de montar uma gruta de concha

摘要

A ladle crane (100) with which a construction period at the time of new installation or reassembly or that at the time of dismantling can be shortened. A melting pot hung by a main winding hook of a main winding device (10) arranged on a main trolley (2) traveling on a first transverse rail (1a) laid along two main girders (1) is rolled up by an auxiliary winding hook of an auxiliary winding device (11) disposed on an auxiliary trolley (3) traveling on a second transverse rail (1b) laid along two auxiliary girders (1A) so as to tilt it. Thus, molten metal stored in the melting pot is extracted. One end of each auxiliary girder (1A) and the other end of each auxiliary girder (1A) are coupled through connecting beams (12), and the two auxiliary girders (1A) and the two connecting beams (12) are constituted so that they can be conveyed as an integrated structure (B).