Precautions for the maintenance of crane girders

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This post was last edited by ztj1118 on 2016-2-16 at 16:52. The main beam bears the weight of all the cargo during crane operations; it is one of the key load-bearing components of the crane. Maintaining the main beam helps improve the safety of the crane and ensures its optimal performance. Points to note during operation and maintenance are: http://xufei.qz234.com/upload/editor/0/662/289/cb707d9d-92f5-4b4c-a566-9456f47c4417.jpg First, the movements during starting and braking should be smooth; avoid rapid or forceful actions to prevent collisions with another crane. All these sudden movements generate significant additional dynamic loads on the main beam, which may cause damage to it. II. It is necessary to regularly inspect the welds of the main beam and the suspension trolley, with a focus on those welds. If cracks appear in the weld, they must be addressed promptly. Remove the cracked weld and weld it again. It is necessary to ensure welding quality during the re-welding process. Check whether the bolts between the main beam and the trolley are properly tightened. III. Regularly measure the deflection of the main beam and check whether it has deformed by comparing it with the specifications at the time of manufacture. IV. When residual deformation is detected in the main beam, operations should be halted, and it can only be used after repair. After repairing and strengthening the main beam, a trial run must be conducted first; it can be put into use only if no abnormalities are detected during the trial run.