Marine deck crane

Marine Cargo Jib Crane Product Introduction

Product Overview

The marine cargo jib crane (also called marine 杂物吊) is a specialized light-duty to medium-duty lifting equipment designed exclusively for marine environments. It is compact, flexible, and corrosion-resistant, mainly used for lifting, handling, and transferring small cargo, spare parts, daily supplies, and sundries on various ships. Compliant with international marine standards (CCS, BV, LR, DNV) and ISO 9001:2015 certification, this crane is widely installed on bulk carriers, feeder vessels, fishing boats, yachts, and offshore platforms, providing efficient and safe auxiliary lifting services in limited deck spaces. Driven by electric, hydraulic, or electro-hydraulic systems, it is engineered to withstand harsh marine conditions such as salt spray, humidity, and ship heeling, becoming an indispensable auxiliary equipment for daily ship operations.

Classification & Applications

Classification

By Drive Mode: Electric marine cargo jib crane, hydraulic marine cargo jib crane, electro-hydraulic marine cargo jib crane, and manual marine cargo jib crane.

By Installation Type: Fixed pedestal marine cargo jib crane (most common), wall-mounted marine cargo jib crane, and portable marine cargo jib crane, suitable for different deck layouts and installation spaces.

By Lifting Capacity: Light-duty (0.1t–1t), medium-duty (1t–5t), designed to meet the handling needs of small to medium-sized sundries and spare parts onboard ships.

By Environmental Adaptability: Standard marine type, marine anti-corrosion type (for salt spray environments), and explosion-proof type (for flammable and explosive cabins or offshore platforms).

Applications

Daily Ship Operations: Lifting and transferring spare parts, tools, daily necessities, food supplies, and small equipment for crew daily use and ship maintenance.

Cargo Auxiliary Handling: Assisting in loading and unloading small bulk cargo, light containers, and irregular goods on bulk carriers, feeder vessels, and fishing boats, complementing large marine cranes.

Ship Maintenance: Lifting and moving small mechanical components, pipelines, and maintenance tools during ship deck and cabin maintenance operations, reducing crew labor intensity.

Offshore & Special Vessels: Lifting sundries, rescue equipment, and fishing gear on offshore platforms, workboats, and fishing vessels; also used for auxiliary lifting of life rafts on some ships.

Port Auxiliary Operations: Temporary lifting of small cargo and equipment during ship berthing and port maintenance, adapting to narrow operation spaces.

Working Principle

The marine cargo jib crane operates through the coordinated work of a power system, transmission mechanism, and control system, tailored to the marine working environment:

Power Supply: Electric models are powered by the ship’s 3-phase AC power (380V/440V), while hydraulic models rely on an electric motor driving a hydraulic pump to generate high-pressure oil flow; manual models rely on manual operation for small-load lifting.

Lifting Movement: The power system drives the hoisting winch to wind or unwind the steel wire rope, realizing vertical lifting and lowering of loads. The lifting speed is adjustable to ensure stable handling of fragile or small items.

Slewing & Luffing: The slewing mechanism (equipped with slewing bearings) drives the jib to rotate 360° continuously, allowing omnidirectional lifting operations; the luffing cylinder or manual mechanism adjusts the jib angle to change the working radius, adapting to different deck spaces and lifting positions.

Safety Control: The integrated control system is equipped with overload protection, upper and lower limit switches, anti-sway devices, and emergency stop buttons. It also adapts to ship heeling (≤5°) and trimming (≤2°) conditions, 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 carbon steel or stainless steel structure with anti-corrosion coating and sealed electrical components, effectively resisting salt spray, humidity, and marine atmospheric corrosion, ensuring long service life in harsh marine environments.

Compact & Space-Saving Design: Small volume, lightweight, and reasonable structure, suitable for installation and operation in narrow ship deck spaces (such as bow and stern decks), without occupying too much valuable deck area, which is especially suitable for small and medium-sized ships.

Flexible & Easy Operation: Supports 360° slewing and adjustable jib angle, enabling precise positioning of small cargo; available with wired pendant control, wireless remote control, or cab control, easy to operate even in narrow spaces, reducing crew labor intensity.

High Safety & Reliability: Complies with international marine safety standards and ship classification society certifications (CCS, BV, LR, DNV), equipped with complete safety protection devices; stable operation, low failure rate, and adaptable to ship heeling and trimming during navigation.

Multi-Purpose Adaptability: Compatible with hooks, small grabs, and spreader beams, capable of handling different types of small cargo, sundries, and spare parts, meeting diverse auxiliary lifting needs onboard ships.

Easy Installation & Maintenance: Modular design, simple installation process, and fewer wearing parts; daily maintenance only requires regular lubrication and inspection, reducing maintenance costs and downtime, ensuring continuous operation at sea.

Energy-Saving & Low Noise: Electric and electro-hydraulic models feature high energy conversion efficiency (electric models over 90%, hydraulic models 70%-80%), low energy consumption, and low operating noise (below 70 decibels), ensuring a comfortable working environment for the crew.

Technical Parameters

Customized parameters (such as lifting capacity, lifting height, jib length, and anti-corrosion level) are available according to the type of ship, deck space, and actual working needs.