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METHOD OF AND APPARATUS FOR TACK WELDING THE COMPONENTS OF OVERHEAD TRAVELLING CRANE BOX GIRDER
METHOD OF AND APPARATUS FOR TACK WELDING THE COMPONENTS OF OVERHEAD TRAVELLING CRANE BOX GIRDER
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机译:架空式起重机箱形梁构件焊接的方法和装置
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摘要
The invention relates to a method and apparatus for the assembly welding of a girder casing of a crane. The method utilizes a light-construction clamp gantry, which can be moved on the casing, for pressing the plates to be welded against the internal structures of the casing. The apparatus comprises a frame structure (6) that rests on the upper surface of the casing on wheels, that acts as a carriage, and that comprises articulated vertical lever arms (5). The upper ends of the lever arms are interconnected with a power means (1), and the lower ends of the lever arms are arranged to rest on the casing from below.
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