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girder of gantry crane

The main girder of gantry crane fault

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The main faults of the gantry crane girder are the main beam sinking and the main beam horizontal bending

1.Main reason of the main girder subsidence is: main girder structure stress, lack of rigid, joint gap is too large; Overload use; Use more than fixed number of year; Heating or heat radiation; Chord or diagonal deformation; Storage, transport, loading way is not correct. In view of the main girder subsidence maintenance methods mainly include: the flame and prestressing two methods to repair; Reinforcement localized

  1. Horizontal bending of main girder of gantry crane

The main cause of the level of main girder bending is: make improper welding technology; Improper storage and transportation. Level for the main girder bending taking maintenance method is mainly by flame rectification and appropriately with puller, top for correction.

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