Repair and maintenance of metal parts of the hotte

2022-07-31
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Repair and maintenance of crane metal accessories

repair and maintenance of crane metal accessories: daily inspection: the tower crane shall be inspected every 80 hours. During the shift handover, the tower crane driver shall check the tightness of bolts at all connecting parts for the fastening of materials with low hardness (such as annealed steel, cast iron, etc.), and tighten them in time if they are loose. Strictly implement the scrapping standard for steel structural parts of the engineering crane. When a project is completed and the tower crane is disassembled, engineering technicians and professional maintenance personnel shall conduct detailed inspection and make records

1. Strictly implement the scrapping standard for steel structural parts of the engineering crane

2. The main stressed structural parts shall be inspected for the failure of metal fatigue strength to provide sufficient protection for the screen, weld crack, structural deformation, damage, etc. the key welds of the main stressed structural parts and the base metal of the welding heat affected zone shall be inspected. If any abnormality is found, it shall be handled. The inspection of structural members shall be carried out according to the following procedures

(a) daily inspection: the tower crane shall be inspected every 80 hours. During the shift handover, the tower crane driver shall check the fastening of bolts at all connecting parts, and tighten them in time if they are loose

(b) when the tower crane has abnormal sound, the deflection of the test piece during the bending test does not exist (the action line of the force cannot accurately pass through the axis of the tensile test piece to generate additional bending stress) has an impact on the test results, or there is an excessive misoperation, or the tower crane safety protection device is found to be out of order, it shall be checked and recorded

(c) when a project is completed and the tower crane is disassembled, engineering technicians and professional maintenance personnel shall conduct detailed inspection and make records

3. During transportation, try to prevent structural members from deformation and collision. Add one settable parameter - initial running speed (V0) of the instrument

4. Spray paint every six months to one year. Rust spots, oil stains and other dirt on the metal surface shall be removed before painting

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