How do upper and lower trolleys work together on a Shipbuilding Gantry Crane for hull block turning?

A specialized shipbuilding gantry crane (goliath crane) is equipped with two independent trolleys to enable 180-degree hull block flipping in mid-air: Upper Trolley: Features two independent lifting hooks mounted on the outer side of the main girder. Lower Trolley: Equipped with one main hook that travels along the underside between the two main legs. Flipping Mechanism: By adjusting the relative hoisting speed between the upper double hooks and the lower single hook, giant ship sections can be smoothly rotated and adjusted for precise alignment during dock assembly.

What is the maximum lifting capacity and span available for Yuntian Shipbuilding Gantry Cranes?

We manufacture heavy-duty shipyard gantry cranes customized for small to ultra-large shipyards: Lifting Capacity: Ranges from 100 tons to 2,000+ tons (utilizing dual trolley combinations). Span Length: Customizable from 50 meters up to 200+ meters, spanning across dry docks and berth storage areas. Lifting Height: Up to 90 meters above rail, allowing easy clearance over large vessels like container ships, LNG carriers, and naval ships.

How does the crane prevent structural warping and rail jamming over large spans (Skew Correction System)?

Over wide spans (e.g., >100m), uneven rail travel can cause severe structural stress. Our goliath shipyard cranes feature a flexible-rigid leg design combined with an advanced PLC-based Auto-Skew Correction System: Flexible/Rigid Leg Combo: One rigid leg and one flexible leg absorb structural thermal expansion and manufacturing tolerances. Real-time Alignment: Absolute encoders and laser distance sensors monitor both sides in real-time, automatically adjusting motor frequency (VFD) to maintain leg synchronization within millimeter accuracy.

What typhoon-proof and coastal protection measures are built into the shipyard gantry crane?

Shipyards are exposed to extreme ocean weather. Yuntian shipbuilding gantry cranes incorporate multi-layer storm protection: Wind Anchorage Systems: Automated hydraulic rail clamps, wheel brakes, and mechanical anchor pins capable of resisting Category 17 typhoons when parked. Real-Time Anemometer: Triggers automatic visual/audible alarms and safe-parking protocols when wind speeds exceed operational limits. Heavy-Duty Corrosion Protection: C5-M marine-grade paint systems with stainless steel piping and IP65/IP66 electrical enclosures to ensure long-term durability in high-salinity air.

Shipbuilding Gantry Crane

High-capacity shipbuilding gantry crane used for hull assembly

Shipbuilding Gantry Crane lifting heavy metal components in shipyard

Heavy-duty shipbuilding gantry crane working in marine manufacturing facility

Shipyard gantry crane with extended boom lifting ship sections

Industrial shipbuilding gantry crane positioned over ship construction site

Authentication mark:

Capacity:1~1600t (customizable)

Lifting Height:28 – 76 m (customizable)

Voltage/Hertz:(customizable)

Brand Name: YUNTIAN

Place of Origin: Henan, China

Product manual

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Introduction

Technical Data (General Version)

Application

Features

PRODUCT INTRODUCTION

The Shipbuilding Gantry Crane is a heavy-duty, large-span lifting solution engineered specifically for the precision assembly of large vessel hulls. Known for its massive lifting capacity and towering height, this crane is the backbone of modern shipyards. It is primarily used for the turnover of hull sections, high-precision block joining, and the installation of heavy ship machinery.Designed with a double-girder structure and a flexible trolley system (often featuring dual or triple hooks), our Shipbuilding Gantry Cranes ensure stable, millimetric synchronization during the most complex "tandem" lifts. With a focus on safety and structural integrity, these cranes are built to withstand the rigorous demands of coastal environments while maintaining peak operational uptime.

TECHNICAL DATA

Parameter	Specification
Lifting Capacity	1~1600t (customizable)
Lifting Height	28 – 76 m (customizable)
Span	40 – 230 m (customizable)
Power Supply	(customizable)
Work Duty Class	A3 – A8 (ISO)
Crane Travel Speed (Light Wind)	Up to 43 m/min
Control Mode	Cabin / Wireless Remote / PLC Smart Control
Corrosion Protection	Shot-blasted Sa2.5 + marine-grade multi-layer epoxy coating

APPLICATION

Training and Simulation

Dry Dock Operations

Ship Assembly and Construction

Facility Maintenance and Repairs

Customization and Modifications

Loading and Unloading of Materials

FEATURES

Section Turnover & Tandem Lifting: Equipped with multiple independent trolleys and hooks to safely flip massive hull blocks 180 degrees and synchronize complex multi-point lifts.

Precision Block Assembly: Features Variable Frequency Drive (VFD) technology for micro-positioning, allowing shipyard engineers to align hull sections with millimetric accuracy.

Heavy Component Installation: Efficiently handles the installation of critical heavy-duty components, including engines, propellers, and main deck modules.

Expansive Workspace Coverage: The ultra-large span and high clearance allow the crane to straddle the entire dry dock or slipway, managing logistics across the full width of the vessel.

Wind-Resistant Coastal Operation: Integrated with advanced anemometers, hydraulic rail clamps, and storm-anchoring systems to ensure safe operation in high-wind maritime conditions.

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Our products are mainly exported to South America, Southeast Asia,Africa, Russia, Turkey, Middle East countries and so on.