The Maintenance Methods of Marine Cranes

On the rough ocean, the marine crane, as the "steel arm" of the vessel, has long been resisting the harsh environment of high salt, high humidity and strong wind and waves. Each of its safe lifts is based on a scientific and rigorous maintenance system.

I. Dual Challenges of the Marine Environment

1. Silent erosion of corrosion

Chloride ions in seawater can cause electrochemical corrosion, causing continuous damage to steel structures, hydraulic pipelines and electrical joints, which is the number one threat to metal parts.

2. The hidden accumulation of fatigue

Repeated hoisting operations can cause microscopic cracks inside the metal. These cracks may expand under continuous stress and eventually lead to structural failure.

Second and third layers of protection: from daily use to depth

The first floor: Daily "Physical Examination

The following must be done before and after the assignment:

Structural inspection: Check for any deformation, cracks or rust

Functional testing: Verify whether each institution operates smoothly and whether the safety devices are effective

Key inspection points: Broken wires in steel wire ropes, integrity of hooks, and leakage in the hydraulic system

The second level: Regular "convalescence"

Precision lubrication: Use anti-corrosion marine-grade grease and maintain the moving parts as shown in the chart

Hydraulic system maintenance: Regularly test the hydraulic oil and replace the oil and filter elements in a timely manner

Steel wire rope maintenance: Apply special grease to prevent internal corrosion

The third layer: In-depth "Diagnosis"

Regular non-destructive testing is carried out on key parts

Internal defects were detected by ultrasonic flaw detection

Magnetic particle testing is used to detect surface cracks

Provide a scientific basis for structural health assessment.

Iii. New Trends in Intelligent Maintenance

Modern marine cranes achieve predictive maintenance through sensor networks:

Stress sensors monitor the force on structures

Vibration sensors warn of mechanical failures

The online oil monitoring system conducts real-time analysis of oil quality

The data analysis platform can establish a "health baseline" for equipment, achieve early warning of faults, and transform maintenance from passive response to active intervention.

The maintenance of marine cranes is not only a technical regulation but also a manifestation of safety culture. Every inspection and every maintenance is an active defense against the harsh Marine environment. Only by adhering to systematic maintenance can we ensure that these "steel arms" are reliable and powerful at critical moments.