Ship to Shore Quay Crane

Introduction
Structure
Specification
Features
Related

Product Introduction

Ship-to-shore quay crane, also known as STS crane is the core lifting equipment at the front of the container terminal. The quay container crane is the key to the efficient operation of modern ports. It looks like a precise and strong giant, specializing in loading and unloading container ships. The main function is to connect the logistics transfer between vessels and terminals seamlessly. Quay container cranes could easily unload containers directly from ships to terminals, or vice versa. And then it is capable of loading containers accurately and precisely from terminals to ships to safeguard the smoothness of container transportation.

The metal structure has high strength and excellent stability, providing solid support for the whole equipment. No matter how much load it faces, it can be as stable as a mountain, guaranteeing the safe operation of the equipment. Weihua quay crane is in strict compliance with international standards such as FEM, DIN, IEC, AWS, GB, etc. This series of high standards ensures the quality and an internationally leading level.

Quay Crane Structure

Quay cranes are mainly composed of Gantry Frame, Boom/Girder, Hoisting Mechanism, Trolley Travel System, Gantry Travel System, Spreader, electrical and control system, metal support structure, and other parts.

Gantry system: Made of high-strength steel, it supports the weight of the whole machine and moves along the track, with strong stability and wind resistance.
Bridge (beam): It can be designed to be pitchable or telescopic, and the front beam can pitch (lifted when not in operation), which is convenient for ships to dock and leave the dock. The telescopic type is suitable for docks with limited clearance, extending during operation and retracting during non-operation.
Lifting mechanism: It adopts a dual-speed lifting design, high speed when empty and low speed when fully loaded, equipped with an overload protection device to improve loading and unloading efficiency.
Trolley running mechanism: Move the spreader along the bridge track, equipped with a shake reduction device to improve the positioning accuracy of the container.
Crane running mechanism: Drive the whole machine to move along the dock track, DC motor speed regulation, adapt to frequent start and stop, and wind protection needs.
Quay crane spreader: Intelligent telescopic design, suitable for a variety of box types, supports double-box operation, improves loading and unloading efficiency.
Electrical and control system: PLC+ variable frequency drive, supports automatic operation, integrated with multiple safety protection functions.
Metal support structure: High-strength tie rods and hinges optimize force, reduce motor load during pitch, and enhance stability.

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Advantages

Multifunctional container handling system: configurable single/double container spreaders, equipped with electronic anti-sway technology, can achieve accurate container loading and unloading in various operating scenarios.
Intelligent lifting system: lifting capacity of 35-65 tons, with adaptive lifting mechanism, equipped with dynamic load optimization function, stable and efficient transfer when fully loaded and empty containers.
Accurate positioning: integrated trolley and gantry operating mechanism, achieving millimeter-level positioning accuracy, meeting seamless shore container transfer operations.
Advanced intelligent operation platform: adopts variable frequency multi-drive feedback technology, real-time trajectory tracking, optimizes operation efficiency, and expands service scope.

Types of quay cranes

According to different structures and application requirements, shore bridge cranes can be mainly divided into the following types and features:

1. Conventional single trolley shore bridge: Adopts a single lifting trolley structure, lifting capacity of 30-50 tons, outreach distance of 40-50 meters, economical and practical, with low maintenance costs, suitable for small and medium-sized ports.

2. Double trolley quay crane: Adopting a front and rear double trolley design, the front trolley is responsible for ship-transfer platform handling, and the rear trolley is automatically docked to the AGV system, with a theoretical efficiency of 80-100TEU/h, applicable to large-scale automated terminals.

3. Girder lifting type: The girder can be lifted and adjusted to adapt to different ship heights and reduce wind resistance during non-operation.

4. Super post panamax quay cranes: outreach ≥ 65 meters, lifting height ≥ 40 meters, rated lifting capacity of 65 tons, can meet the needs of 22 rows of ultra-large container ship operations.

5. Low profile: optimized structure reduces the height of the whole machine, applicable to terminals or inland river ports with limited headroom.

6. Fully automated bridge: integrated intelligent system scheduling, automatic positioning (GPS accuracy ±15mm), without manual operation, suitable for intelligent automated ports with high throughput.

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Specifications

Main Technical Parameters
Basic Parameters	Rated Lifting Capacity	Under Spreader	35		41		51		65		t
		Under Hook	45		50		61		75		t
	Lifting Height	Above Rail	37	25	50	35	58	40	62	42	m
		Below Rail		12		15		18		20	m
	Front Outreach		30		45		51		65		m
	Rear Outreach		10		15		15		25		m
	Rail Gauge		16		16/22		30.48		30.48		m
	Total Trolley Travel Distance		56		76/82		96.48		120.48		m
	Inside Clearance Between Legs		≥17.5		≥17.5		≥18.5		≥18.5		m
	Clear Height of Middle Cross Beam		≥13		≥13		≥13		≥13		m
	Distance Between Gantry Bumpers		≤27		≤27		≤27		≤27		m
Speed Parameters	Lifting Speed	Full Load	50		60		75		90		m/min
		No Load	120		120		150		180		m/min
	Trolley Traveling Speed		180		210		240		240		m/min
	GantryTraveling Speed		45		45		45		45		m/min
	Boom Hoisting Time (One Way)		5		5		5		5		min

The items listed in the above technical parameter table are for reference.

Features

High-efficiency loading and unloading function

Specially designed for the front of container terminal, it can accurately and quickly load and unload containers between ships. It reduces the docking time of ships in harbor and improve the efficiency of harbor cargo throughput.

International standard design and manufacture

The design, manufacture and inspection strictly follow the international standards such as FEM, DIN, IEC, AWS and GB, etc.. It ensures the high quality and universality of the products, stable and reliable operation in ports all over the world.

All-digital AC frequency conversion and PLC control speed regulation technology

Flexible control and high precision, making the positioning and operation of the quay crane more accurate during operation.

Multiple spreaders and optional anti-sway function

With a variety of single and double container spreaders to meet different loading and unloading needs, improving the stability and speed of loading and unloading.

Quay Crane Manufacturers

Weihua Global, as a leading quay crane manufacturer, specializes in customized container handling solutions for various port operations. Our cranes are modularly configured to support single/double spreaders, 35-65T lifting capacity, and automation systems with AI track control. With an outreach of more than 70 meters and a lifting height of 47.5 meters, our cranes provide high-performance equipment for mega-vessel operations and are CE/FEM certified.

Weihua can provide turnkey services including design solutions, port layout analysis, installation, and technical support. Welcome to cooperate with Weihua to jointly build intelligent quay cranes and improve the productivity of your terminal.

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