Marine Telescopic Deck Crane

--- for various vessels such as offshore vessels, supply ships, and research vessels

The marine telescopic deck crane is a type of lifting equipment specifically designed for marine environments and mounted on ship decks.

Adopting hydraulic technology, the crane is equipped with a telescopic boom that allows flexible adjustment of the working radius to accommodate different operational scenarios.

A marine telescopic deck crane typically consists of a telescopic boom, a base, a slewing base, a control platform, a hoisting winch, a pulley block, oil cylinders, and a slewing bearing.

The crane's telescopic boom can be extended or retracted according to operational requirements, enabling adaptation to different lifting distances and heights.

The advantage of a marine telescopic deck crane:

• Adjustable boom length, with a large working radius and lifting height
• Retractable boom for minimal space occupation when not in use
• Low-base design for enhanced stability
• Made of marine-grade steel
• Multi-layer anti-corrosion coating treatment
• Key components with IP56 or higher ingress protection rating
• Hydraulic system can be equipped with wave compensation function
• Full-slewing system enabling 360° continuous operation
• Intuitive control and operation interface
• Configurable multi-angle monitoring system
• Multiple safety protection devices (including load moment limiter, emergency manual system, anti-unhooking device, wire rope protection device, etc.)
• Modular component design
• Easily accessible key maintenance points
• Centralized lubrication system available
• Core hydraulic components from internationally renowned brands
• Structural design service life of over 25 years
• Approved by major international classification societies, such as CCS, ABS, DNV, RINA, BV, RMRS, etc.

Whether it is for offshore replenishment, equipment hoisting, rescue operations, or special equipment handling, our marine telescopic deck cranes can provide customized configuration solutions for different operation modes.

Deployed at locations like offshore oil and gas platforms and rigs, the marine telescopic deck cranes can perform material handling and ship-to-ship operations, and play an important role in vessel cargo loading and unloading, equipment installation, and vessel maintenance. They are capable of meeting the lifting requirements of different vessels.

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Maintenance of a marine telescopic deck crane focuses on four core modules: hydraulic system, mechanical structure, electrical control system, and safety devices. Given the high salt spray and humidity of marine environments, prioritize anti-corrosion and regular inspections. Key points are as follows:

 Hydraulic System Maintenance

• Fluid Management: Regularly check hydraulic oil level, cleanliness, and viscosity. Replace oil per equipment manual (usually every 2000 operating hours or 12 months), and clean the oil tank and filters simultaneously.
• Seal Inspection: Inspect seals of boom cylinders, slewing motors, and winch hydraulic parts. Replace immediately if leakage, aging, or cracking occurs; use seawater-resistant fluororubber seals.
• Pipeline Fastening: Check pipeline joints, flanges, and clamps for looseness, deformation, or wear. Install protective sleeves on exposed pipelines.

Mechanical Structure Maintenance

• Telescopic Boom & Structural Components: Inspect boom welds, pins, and connecting plates for cracks, deformation, or corrosion before each operation. Regularly grease boom sliding surfaces, derust corroded parts, and apply anti-rust paint.
• Slewing & Hoisting Mechanisms: Check slewing bearing tooth wear and lubricate with gear oil regularly. Inspect hoisting winch wire ropes; replace if broken wires exceed standard or diameter wear exceeds 10%. Apply anti-rust grease to wires periodically.
• Pins & Bearings: Lubricate connecting pins and pulley bearings with water-resistant grease every 500 operating hours. Check split pins and circlips for integrity.

Electrical Control System Maintenance

• Circuit & Component Protection: Inspect electrical control cabinet sealing and door gaskets. Insulate circuit connectors, check cables for aging/damage, and replace as needed.
• Sensors & Control Units: Verify sensitivity of safety sensors (load, radius, height limiters) and calibrate regularly. Clean control buttons, touch screens, and PLC modules to ensure accurate command transmission.
• Motor Maintenance: Test insulation resistance of hoisting and slewing motors. Keep motor housings clean and heat dissipation vents unobstructed.

Safety Device Maintenance

• Limit & Protection Devices: Weekly test load limiters, moment limiters, and emergency stop buttons. Check windproof anchoring devices and rail clamps; ensure secure anchoring before severe weather.
• Hook & Pulleys: Inspect hooks for deformation, cracks, and wear; scrap if critical section wear exceeds 10%. Replace pulleys with excessive groove wear or cracks.
• Brake System: Inspect winch and slewing mechanism brakes, adjust clearance, and replace brake pads when wear exceeds limit.

Environmental Adaptability Maintenance

• Anti-corrosion Treatment: Monthly derust and repaint exposed metal parts. Use hot-dip galvanized or stainless steel fasteners, and apply anti-rust agents regularly.
• Cleaning Management: Clean seawater, oil, and debris after operation. Periodically wash with a high-pressure water gun, avoiding electrical cabinets and motors.

Documentation & Periodic Management

• Maintain a detailed maintenance log, recording date, content, replaced parts, and operator.
• Follow manual requirements for daily inspections (per shift), regular maintenance (monthly/quarterly), and annual overhauls.
• Conduct non-destructive testing (NDT, e.g., ultrasonic, magnetic particle inspection) during annual overhauls to detect hidden cracks.

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