L68A1 Mast Sectiondaily maintenance of metal structural parts of Engineering Crane
1. Strictly carry out the scrap standard of crane steel structure. 2. The Fatigue Strength, weld crack, structure deformation and damage of the main stressed structural parts should be checked, the key weld and base metal of the heat affected zone of the main stressed structural parts should be checked, and if any abnormality is found, should be dealt with. Inspection of structural parts shall be carried out in accordance with the following procedures.
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(A) daily inspection of Tower Crane: the Tower Crane should be inspected every 80 hours. The crane driver should check the fastening condition of the bolts at the connecting parts during the shift change, and tighten the bolts in time if there is any loosening. (b) when the tower crane appears abnormal sound, or there was a wrong operation, or found that the tower crane safety protection device failure, etc. , should be checked and recorded. (C) after a project is completed and the tower crane dismantling procedure is introduced, the tower crane shall be carefully inspected and recorded by engineering technicians and professional maintenance personnel. 3. In the course of transportation, it is necessary to try to prevent the deformation and collision damage of structural components. 4. Spray paint every six to one year. Before painting should remove all metal surface rust spots, grease and other dirt.
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