1. Daily inspection: Measure the rim thickness of the
crane trolley wheel weekly (no less than 50% of the original thickness) and check the bearing temperature monthly (no more than ambient temperature +40°C).
2. Precision diagnosis: Quarterly vibration testing (effective speed ≤ 4.5 mm/s) and annual magnetic particle inspection are recommended for crane trolley wheels.
3. Maintenance standards: Immediate replacement is required when the crane wheel diameter deviation exceeds 3‰, the rim thickness wear exceeds 30%, or a through-crack appears.
4. Technical modification: For heavy-duty conditions, consider using ZG50SiMn crane wheels or welding a wear-resistant layer (hardness HRC ≥ 55).
Through systematic fault analysis and preventive maintenance, the failure rate of
crane trolley wheels can be reduced by over 60%. After implementing condition monitoring at a shipbuilding company, the average service life of crane trolley wheels increased from 2.5 years to 4.8 years, and annual maintenance costs decreased by 45%. This clearly demonstrates the importance of scientific maintenance management to ensure the safe operation of equipment.
