Overturning technology for ultra-large rail-mounted gantry crane girder structure in workshop

Abstract

The invention relates to an overturning technology for an ultra-large rail-mounted gantry crane girder structure in a workshop. The overturning technology is characterized by comprising the followingspecific technological steps that S1, assembling and welding of an auxiliary tool are conducted; S2, penetrating and inserting of a steel wire rope are conducted; S3, crane lifting and overturning areconducted; and S4, girder detection is conducted. According to the overturning technology, steel wire rope baffles used for containing steel wire ropes and main beam end corner protection tools are installed and welded to the center position and the four end corners of the two end positions of a girder, the steel wire ropes are matched with three cranes for simultaneous lifting and overturning, and therefore compared with the manner that a single crane is adopted for overturning, the manner of the technology can better ensure the assembling precision and the deformation control of the girderstructure; meanwhile generation of prestress is reduced, and torsion resistance can be better controlled; and the process time of subsequent overproof correction is shortened.

Description

technical field [0001] The invention relates to the technical field of turning over a rail-mounted girder, in particular to a turning-over process in a super-large rail-mounted girder structure workshop. Background technique [0002] In the production of super-large rail crane girders, the rail crane girders need to be turned over by 180° for the other side of the rail crane girders during the assembly and welding process. The girder is turned over; however, the commonly used crane-type turnover for the oversized track-hanging girder cannot guarantee the manufacturing accuracy and deformation control of the super-large track; therefore, a new type of turning process is needed to turn over the super-large track-hanging girder. To ensure the control of the precision before and after turning over of the super-large track crane girder and the control of deformation. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a turning process in the workshop of a super-large rail hanging girder structure, which can solve the problem that the common rail hanging girder structure uses a crane to turn over with all its heart between the lifting lug and the girder body and cannot satisfy the super large rail hanging girder. The question of turnaround needs

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