The most prominent cause of equipment wear and tear in coastal areas is salt fog corrosion and damp condensation. The moisture in seawater carries salt and adheres to the steel structure of tower cranes, electrical equipment, and cable terminals, continuously eroding the paint surface, metal components, and insulation layers of the equipment, causing problems such as rust on the standard sections, oxidation of bolts, cracking of cable outer skins, and poor contact at connection terminals, which can easily lead to electrical leakage, equipment failures, and decreased structural stability, resulting in safety accidents. To address this core issue, the construction site has established a regular anti-corrosion and rust prevention maintenance mechanism. Daily inspections are conducted on key steel structures such as the lifting arms, standard sections, slewing bearings, attachment frames, and connecting bolts of tower cranes to ensure comprehensive coverage. Salt, moisture, and dust on the surface are promptly cleaned, and rust, peeling insulation layers, and damaged parts are promptly descaled, repainted, and treated with anti-corrosion measures to prevent the spread of rust and further equipment wear. At the same time, attention is paid to inspecting metal welds and structural stress points to prevent insufficient structural strength and component deformation caused by corrosion, ensuring the structural stability of the entire tower crane.
Electrical system maintenance and insulation performance are the top priorities in the safety management of coastal tower cranes. High humidity and salt fog environments can easily cause condensation and water accumulation inside the electrical control cabinets and operation linkage consoles, accelerating the aging of cable insulation layers, oxidation and mold growth of terminals, and significantly reducing the insulation performance of the equipment, triggering short circuits, electrical leakage, and electrical fires. During daily maintenance, staff strictly implement the graded inspection system, checking the sealing rubber strips and waterproof covers of the electrical control cabinets, junction boxes, and operation boxes to ensure good sealing and no water or fog leakage. The salt and dust on the inside of the cabinets are promptly cleaned, the dehumidification and heating devices inside the cabinets are turned on to keep the electrical cavities dry and ventilated, and residual condensation is eliminated. For the running cables in the rotating and extending areas of the lifting arm, the insulation layer wear, cracking, and corrosion damage are carefully inspected. Old protective sleeves and buffer pads are replaced to avoid cable exposure to moisture.
