South Africa Double Girder Gantry Crane for Sale

Specifications

Double Girder Gantry Crane Introduction

Like the single girder gantry crane, double girder gantry crane is a type of gantry crane with double girder/beam structure on the top and travels on the crane rails. Usually, it equips electric crab hoist or electric open winch as lifting mechanism, not a monorail electric hoist. The electric crab hoist trolley runs on the rails that fixed on the top of main beams. The main girders of double girder gantry crane are supported by one or two legs which are connected with end beams, so the whole gantry crane system can travel along the crane rails by the end carriages.

As you know, for industrial gantry cranes, they are able to move in six directions, left and right, up and down, forward and backward. The electric crab hoist on the main beams moves in left and right directions, when lifting and lowering, the hook of the hoist move up and down and the whole gantry crane systems move forward and backward.

Double girder gantry crane will be equipped with a cable reel for long travel. Long travel means long power feeding system, gantry crane cable reel can effectively solve the problem of retracting and releasing the power supply cable.

Sometimes you can see the cantilevers on the left and right of the double girder gantry crane main beam, and sometimes just one on the left or right. The cantilevers length is not included in crane span, if you need to lift loads which are out of the crane rails, a cantilever is a good choice, the electric crab hoist can travel across the legs. Of course, the cantilever is not infinitely long, it depends on the span of the whole gantry crane.

Main Composition of Single Girder Gantry Crane

Main Girder

Q235/Q345 carbon structural steel. Strong box type with standard deflection

Support Legs

Q235/Q345 carbon structural steel. Strong box type with three coats of paint

Gantry Crane End Carriages

Q235/Q345 carbon structural steel. Nanjing brand travelling motor

Electric Open Winch

With high capacity and high working loads, it has been specially developed for lifting jobs that require precise and smooth movements.

Gantry Crane Travelling Motor

Crane travel motors include YZR/YZP/three-in-one models, and the brands are Hongda/Boneng/SEW/Nanjing Special

Crane Wheels

Vacuum casting, intermediate hardening by top technical machinery

Benefits of Double Girder Gantry Crane

Gantry cranes are quicker and easier to install and dismantle, ideal for rented factories or multiple workplaces.
Equipped with all necessary safety devices
High reliability components
High workload for carrying heavy loads and working long hours
No need for any posts, beams on the runway, just drive on the ground
High site utilization rate, large operating range
Wide adaptability and strong versatility
Excellent operating performance
Suitable for outdoor and indoor

Application of Double Girder Gantry Crane

Double girder gantry crane with larger lifting capacity, can do most of the work no matter indoor and outdoor. For indoor use, it can be used in workshops, warehouses, factories and various production lines for materials handling, and for outdoor use, it can be the main lifting equipment with special lifting tools for goods loading and unloading, stone transferer, material handling, steel yards, mines, concrete industries, ports and shipbuilding, etc.

Comparison of Double Girder Gantry Crane and Single Girder Gantry Crane

If the single-girder gantry cranes with a lifting capacity up to 20 tons are not competent for the work, the double girder gantry cranes will work. As changed the lifting mechanism type (mostly use electric crab hoist trolley, or electric open winch trolley), double girder gantry cranes are stronger and bigger than single girder gantry cranes. The lifting capacity is max up to 500 tons. So, the goliath gantry cranes are mostly used outdoors. As long as the work area is covered, there is no work that it cannot do.

Items	Single Girder Gantry Crane	Double Girder Gantry Crane
Image
Lifting capacity	1-20 tons	1-500 tons
Lifting height	1-100m	1-120m
Span	6-30m	6-35m
Power supply	220-480V 50Hz 3Phase	220-480V 50Hz 3Phase
Working duty	A3, A4	A5, A6
Ambient Temperature	-20~40℃	-20~40℃
Lifting mechanism	Electric hoist	Electric crab hoist / Electric open winch
Lifting speed	0.8 / 8 m/min	12.5 m/min
Hoist travelling speed	20 m/min	43.8 m/min
Crane travelling speed	20 m/min	37.7-40.1 m/min
Application	Indoor / outdoor	Indoor / outdoor

Types of Double Girder Gantry Crane Yuantai Supply

Box girder type (A type) double girder gantry crane

Widely used in workshop, storage, port, hydroelectric power station.
Lifting Capacity: 5-500t
Span: 7.5-35m
Lifting Height: 6/9/12/18m (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A5, A6
Ambient Temperature: -25~40℃

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Truss girder type double girder gantry crane

Widely used in stockyard, steel yard, port, etc.
Lifting Capacity: 5-450t
Span: 7.5-48m
Lifting Height: 6/9/12/18m (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A3
Ambient Temperature: -25~40℃

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European-spec double girder gantry crane

Widely used in indoor, outdoor, stockyard, etc.
Lifting Capacity: 5-100t
Span: 10~35m
Lifting Height: 6/9/12/18m (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A5, A6
Ambient Temperature: -25~40℃

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U-shaped double girder gantry crane

Widely used in factory, warehouse, stockyard, etc.
Lifting Capacity: 1~500t
Span: 7.5~35m
Lifting Height: 6/9/12m (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A5, A6
Ambient Temperature: -25~40℃

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Double girder semi gantry crane

Widely used in factory, warehouse, stockyard, etc.
Lifting Capacity: 1~450t
Span: 7.5~35m
Lifting Height: 6/9/12m (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A5, A6
Ambient Temperature: -25~40℃

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Rail mounted double girder gantry crane

Lifting Capacity: 35t, 40t, 41t
Span: 20~45m
Lifting Height: stack two over three ~ stack six over seven (according your needs)
Voltage: 220-660V 50/60Hz 3Phase
Working Class: A6, A7
Ambient Temperature: -25~40℃

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Rubber tired double girder gantry crane

Lifting Capacity: 41-65t
Span: ≥23.47m (according your needs)
Lifting Height: 18.2-26.4m (according your needs)
Voltage: Diesel power generation group
Working Class: A6, A7
Ambient Temperature: -25~40℃

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Lifting Mechanism Option of Double Girder Gantry Crane

Electric Open Winch for Double Girder Crane

Electric Crab Hoist for Double Girder Crane

Control Options of Double Girder Gantry Crane

Pendant Control
Remote Control
Cabin Control

Comparison of Different Types Double Girder Gantry Crane

A-type double girder gantry crane	Truss type double girder gantry crane	U-shape double girder gantry crane

Suitable for indoor and outdoor Gantry cranes are designed for maximum flexibility with minimal maintenance of structures and tracks. The open design facilitates inspection of defects throughout the crane's life. The crane is equipped with an electric open winch, and the winch traverses on the main beam	The main beam and outriggers of this type gantry crane are both truss type, which is more suitable for open areas and can withstand strong wind pressure. The self-weight of the crane is lighter than that of the single-girder gantry crane with box girder, which also reduces the cost. Usually used in outdoor, concrete beam field, as engineering gantry crane, the lifting mechanism is usually an open winch.	This type gantry crane adopts a U-shaped design, which is more convenient for large cargo to be moved from the middle position to the cantilever, which is not limited by the size of the supporting legs, just like the gantry crane used in the hydropower station, which has a very large wheel base. The crane is usually equipped with a hoisting spreader, and when the crane is used to lift the parked objects, the lifting mechanism has two lifting points.

Safety Protection Devices of Yuantai Single Girder Gantry Crane

Overload limiter
High-quality, long-term use, impact-resistant polyurethane buffer
Crane travel limit switch
Loss of voltage protection, phase error protection
Emergency stop system, braking system
Lifting height limiter

FAQ About Single Girder Gantry Crane

Why should we choose a gantry crane?

If your workshop has no column, or you just rent a workshop, we recommend you to choose the gantry crane, which can save the cost of the column and is more convenient to install and disassemble. When the crane is used outdoors, usually, a gantry crane is more suitable.

Which type of gantry crane is suitable for us?

If the gantry crane is used in an open area and the wind is very strong, or if the crane is used to lift concrete beams, you are better off choosing a truss girder gantry crane.
If the size of the cargo is large and the gantry crane is required to have a cantilever, you'd better choose a U-shaped double girder gantry crane.
A-type double girder gantry cranes are suitable for general situations and can be used both indoors and outdoors.

Can you provide gantry crane spare parts?

Yes, as a gantry crane manufacturer, we supply all spare parts such as motors, hoists, rollers, wheels, grabs, hooks, tracks, walking beams, enclosed busbars, etc.

Why Choose Yuantai Crane

Tailor-made Crane Solutions
The single girder gantry crane solutions of Yuantai Crane are customized according your real working situation. On the premise of meeting the requirements of use, we will save you the cost as much as possible.
Quality Assurance
Perfect quality control system, focusing on product quality. Products are the carrier of all services and trust.
All crane products and components are passed ISO / CE certifications.
Perfect service makes you worry-free
Offer crane installation and maintenance service.
Free crane operation training service for your staff.
Up to 20 years of accessory support.

Contact Yuantai Crane With Your Request

We are excited for the opportunity to work with you and find the right solution for your problem, no matter how complex or unique. We'll work with you from the very beginning of your project to the very end while we continue to provide you with support after it is finished. For getting the gantry crane solution that meets your working conditions, please send us a detailed request as follow: