MG Double Girder Gantry Crane

Design and manufacture according to GB/T 14406 "General gantry crane".
Mainly made up of bridge, trolley, crane traveling mechanism and electric system.
All the procedure is finished in the operating room.
Applies to the open warehouse or rail along for general handling and lifting work.
Also can be equipped with other lifting devices like grab or container spreader or etc. for special work.
Prohibited for high temperature, flammable, explosive, corrosion, overloading, dust or other dangerous operations.

√ Heavy duty gantry crane.
√ Span Length: 12~35 m.
√ Lifting Capacity: 5~500 tons.

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.

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 hoist under the main beam 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.

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

• 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

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.

• 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

Pendant Control
Remote Control
Cabin Control

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.
• A-type double girder gantry cranes are suitable for general situations and can be used both indoors and outdoors.

I want to use a gantry crane, but the foundation has already been established. Can I avoid breaking the ground to install the gantry crane?

Yes, once the concrete width of the ground exceeds 20 cm, then there is no need to excavate the ground. Just lay the belt steel plate, bolt it to the concrete floor, and then weld the rails on it.

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.

• Tailor-made Crane Solutions
  The double 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.

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:

• Lifting capacity: _____ ton
• Span(S): _____ m
• Lifting height(H): _____ m
• Left cantilever length: _____ m
• Right cantilever length: _____ m
• Crane travelling legnth: _____ m
• Power supply (e.g., 380V 50Hz 3Phase):
• Control model: Pendant control? Remote control? Cabin Control?
• Detailed working conditions of the crane:
• Other requirements: