Maintenance of crown block

Maintenance of crown block

1. The maintenance of metal structures must avoid sharp start-up and braking; Check the main welds connecting the main beam ends. If cracks are found, stop using them and re weld them; When the main beam is found to have residual deformation, it should be stopped from use for repair; Paint maintenance shall be carried out regularly.

2. The maintenance of main parts and components and the steel wire rope must be lubricated regularly; The bearing should always be lubricated; When the wear of the wheel rim exceeds 30% of the original thickness or the rim is partially cracked, the wheel should be replaced; Maintain a certain amount of oil in the reducer; The brake of the lifting mechanism should be checked once a day, and the brake of the operating mechanism should be checked once every 2-3 days. The maintenance and repair of electrical equipment should keep the electrical equipment clean, and often observe whether the rotor slip ring brush of the motor is in good condition and whether it is worn; Whether the noise emitted by motor electromagnet, relay and electromagnetic switch is normal;