To extend the service life of cranes and enhance the safe operation of Crane lifting equipment, proper maintenance and repairs are essential.

 

How should maintenance be performed on each mechanism of the crane?

Mechanical Component Maintenance: Inspect the brakes of each mechanism, operational status of all mechanisms, tightness of connecting bolts, and wire ropes in various sections. Address any faults promptly. Examine the condition of connecting bolts, welds, and structural components, performing regular tightening and repainting.

How often should maintenance be performed?

Hydraulic System Maintenance:

Timely add or replace hydraulic fluid. Inspect hydraulic lines, fittings, safety valves, hydraulic pumps, and cylinders. Address any issues promptly.

 

Electrical System Maintenance:

Ensure wires and cables are undamaged. Verify reliable operation of safety device limit switches. Grounding resistance must meet specifications. Lubrication:

Regularly inspect lubrication status throughout the tower crane. Perform scheduled lubrication tasks. Timely add or replace lubricants.

 

To ensure normal tower crane operation and guarantee personnel and equipment safety, daily maintenance must focus on six key areas: inspection, adjustment, cleaning, tightening, lubrication, and replenishment.

 

Hoisting Mechanism: All structural inspections and maintenance must meet operational requirements. Maintenance cycle: monthly.

 

Boom Mechanism: All structural inspections and maintenance must meet operational requirements. Maintenance cycle: monthly.

 

Opening/Closing Mechanism: All structural inspections and maintenance must meet operational requirements. Maintenance cycle: monthly.

 

Slewing Mechanism: All structural inspections and maintenance meet operational requirements. Maintenance inspection cycle: monthly.

 

Grab Mechanism: All structural inspections and maintenance meet operational requirements. Maintenance inspection cycle: monthly.

 

Gearbox: Inspect for oil leaks and verify normal oil temperature. Check for abnormal noise during operation. Open the gearbox inspection port to examine the high-speed shaft and gear meshing for normalcy. Maintenance inspection cycle: monthly.

 

Brake System: Inspect and service oil pump and brake components (e.g., replace worn brake pads, adjust brakes, replace worn parts). Maintenance inspection cycle: monthly.

 

Safety Limit Devices: Verify functionality of all limit switches. Maintenance inspection cycle: monthly.

 

Primary Load-Bearing Components: Inspect major structural members for cracks, deformation, or corrosion. Maintenance inspection cycle: monthly.

 

Lubrication System: Verify oil lines are unobstructed and free of leaks. Apply lubricant to all lubrication points. Maintenance inspection cycle: monthly.

 

Heavy Load Test Run: Inspect all components for normal operation and abnormal noises. Maintenance inspection cycle: monthly.

 

Wire Ropes: Replace hoisting, opening/closing, and luffing wire ropes. Maintenance inspection cycle: every 6 months.