offshore platform crane

Offshore Platform Crane Product Introduction

Product Overview

The offshore platform crane is a specialized heavy-duty lifting equipment designed exclusively for harsh marine and offshore environments, primarily installed on offshore oil and gas platforms, wind farm platforms, FPSOs (Floating Production Storage and Offloading units), jack-up rigs, and semi-submersible platforms. As a core auxiliary device for offshore operations, it is engineered to withstand extreme conditions such as strong winds, high waves, salt spray corrosion, and dynamic vessel motions, providing safe, efficient, and stable lifting, handling, and transferring services for cargo, equipment, and personnel. Compliant with international offshore standards (API 2C, DNV GL, ABS, LR, BV) and ISO 9001:2015 certification, it integrates robust structure, advanced control systems, and marine-grade anti-corrosion technology, playing an irreplaceable role in offshore construction, oil and gas exploitation, wind energy development, and emergency rescue operations.

Classification & Applications

Classification

By Structure Type: Knuckle boom offshore crane (compact, foldable design for limited platform space), lattice boom offshore crane (long reach, suitable for heavy-load operations), and telescopic boom offshore crane (adjustable boom length for flexible operation).

By Drive Mode: Hydraulic offshore platform crane (most widely used for marine scenarios, high stability), electro-hydraulic offshore platform crane (energy-saving, precise control), diesel-hydraulic offshore platform crane (independent power supply for remote offshore areas), and fully electric offshore platform crane (eco-friendly, low maintenance).

By Duty Cycle: Production duty (annual operating time of 200 hours, for fixed production platforms), intermediate duty (annual operating time of 2,000 hours, for temporary rigs), and drilling duty (annual operating time of 5,000 hours, for full-time floating structures).

By Application Scenario: Offshore oil and gas platform crane, offshore wind farm crane, FPSO crane, jack-up rig crane, and offshore rescue crane (equipped with rescue吊点 for emergency operations).

By Environmental Adaptability: Standard offshore type, enhanced anti-corrosion type (ISO C5-H coating), and explosion-proof type (ATEX/IECEx compliant for hazardous zones).

Applications

Offshore Oil & Gas Operations: Lifting and transferring drilling equipment, wellhead components, pipes, and supplies between offshore platforms and supply ships; assisting in oil drilling, production, and maintenance tasks, including heavy-load module installation and equipment replacement.

Offshore Wind Energy: Installing and maintaining wind turbine components (blades, nacelles, towers) on offshore wind farm platforms; handling auxiliary equipment and tools for wind farm construction and daily operations.

FPSO & Floating Platforms: Loading and unloading crude oil, chemicals, and supplies; transferring personnel and emergency equipment; supporting subsea operations such as pipeline laying and underwater equipment deployment.

Offshore Construction & Maintenance: Lifting large structural modules, marine cables, and construction materials during offshore platform construction; providing auxiliary lifting for platform maintenance, including mechanical component replacement and pipeline repair.

Emergency Rescue: Equipped with dedicated rescue points to lift and transfer personnel in emergency situations; handling rescue equipment and supplies during offshore accidents or harsh weather conditions.

Working Principle

The offshore platform crane operates through the coordinated work of a power system, transmission mechanism, lifting mechanism, motion compensation system, and intelligent control system, specifically optimized for dynamic offshore working conditions:

Power Supply: Hydraulic and electro-hydraulic models are powered by the platform’s 3-phase AC power (380V–690V 50/60Hz) or diesel generators (for remote offshore areas); fully electric models rely on the platform’s power grid, while diesel-hydraulic models feature independent diesel power for emergency operations.

Lifting Movement: The power system drives the hoisting winch (equipped with high-strength steel wire ropes and hooks) to wind or unwind, realizing vertical lifting and lowering of loads. The lifting speed is adjustable via variable frequency control to ensure stable handling of heavy or fragile items, with a safe working load (SWL) tailored to different operation scenarios.

Boom & Slewing Control: Knuckle boom models fold inward via hydraulic cylinders to save space when idle; lattice and telescopic boom models adjust length or angle to expand the working radius. The slewing mechanism (slewing bearing + reduction gearbox) drives the boom to rotate 360° continuously, enabling omnidirectional lifting operations on the platform deck.

Motion Compensation: Advanced active heave compensation (AHC) or passive motion compensation systems counteract platform sway caused by waves, keeping the load stable during lifting and transfer—critical for rough sea conditions (wave heights up to 6 meters).

Safety Control: The integrated PLC control system integrates overload protection, dual brake systems, anti-collision sensors, wind speed monitoring, emergency stop (≤0.3s), and remote diagnostics. It adapts to platform heeling (≤8°) and trimming (≤4°), automatically cutting off power or stopping operation in abnormal situations to ensure the safety of personnel, equipment, and cargo at sea.

Performance Advantages

Marine-Grade Corrosion Resistance: Adopts high-strength Q355B/Q460 steel or 316L stainless steel structure, combined with ISO 12944 C5-M certified anti-corrosion coating (500μm epoxy coating + topcoat) and sealed electrical/hydraulic components (IP66–IP68 protection grade). It effectively resists salt spray, humidity, and marine atmospheric corrosion, ensuring a service life of 25 years in harsh offshore environments.

Superior Stability & Wind Resistance: Reinforced pedestal mount and robust structural design ensure stability on rolling platforms; storm-proof design resists winds up to Beaufort scale 12 (wind speed ≤32.7m/s), with stowing wind speed up to 55m/s, adapting to extreme sea conditions (sea state 4–6).

High Load-Bearing Capacity & Reach: Lifting capacity ranges from 5t to 1400t, with a maximum working radius of up to 102m, capable of handling heavy offshore modules, wind turbine components, and large equipment. Lattice boom models offer exceptional reach (over 50m) for long-distance lifting tasks.

Intelligent & Precise Operation: Equipped with advanced control systems (HiPro control system, Litronic control system) and motion compensation technology, ensuring precise load positioning even in dynamic sea conditions. Control options include wireless remote control, cab control, and remote monitoring (HiConnect), reducing manual labor intensity and improving operation accuracy.

High Safety & Reliability: Complies with international offshore standards (API 2C, DNV GL, ABS) and ship classification society certifications, with a safety coefficient of over 10 times (higher than onshore cranes). Equipped with complete safety protection devices, a low failure rate, and stable operation for long hours of continuous work.

Compact & Space-Saving Design: Knuckle boom models feature a foldable design to minimize deck footprint, ideal for limited offshore platform space. Modular design simplifies installation and maintenance, with easy access to all components for routine inspection.

Energy-Saving & Low Maintenance: Fully electric and electro-hydraulic models feature high energy conversion efficiency; regenerative hydraulic systems reduce fuel consumption by 20–30%. Standardized components and sealed design reduce wearing parts, lowering maintenance costs and downtime. Remote diagnostics enable real-time monitoring of equipment status, facilitating proactive maintenance.

Customizable Adaptability: Can be customized according to offshore platform type, operation scenario, and environmental conditions, including lifting capacity, boom length, anti-corrosion level, explosion-proof design, and motion compensation systems.