What is a Gantry Crane?
A gantry crane, characterized by a single or double girder configuration, is supported by freestanding legs that traverse on wheels or along a track/rail system. Gantry cranes are a preferred choice when avoiding the incorporation of an overhead runway system is necessary.
Primarily used outdoors or beneath existing overhead bridge crane systems, gantry cranes distinguish themselves by not requiring integration into a building’s support structure. This eliminates the need for permanent runway beams and support columns, potentially resulting in significant material cost savings. In certain scenarios, opting for a similarly specified gantry crane can prove to be a more cost-effective solution compared to a bridge crane.
For larger gantry systems, a rail or track embedded in the ground facilitates movement in a straight line within a dedicated work area. Conversely, smaller portable gantry systems, equipped with castors or wheels, offer flexibility by being easily movable within a facility for tasks such as maintenance or light fabrication work.
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Different Types of Gantry Cranes
- Single Girder Gantry Crane
The single girder gantry crane option has a single beam across the top and is best suited to relatively lighter loads up to 20 tonnes on tasks that don’t usually last longer than a few hours.
Single Girders are utilised in lighter industries.
- Capacity up to 20 tonnes.
- Spans up to 26 metres.
- Internal or external bracing.
- 4 Wheel Drive.
- Onboard maintenance platform.
- Pendant or radio control.
- Cable reel or conductor rail power supply systems.
- Double Girder Gantry Crane
If you’re looking to lift, transport or hoist significantly larger loads up to 100 tonnes at a time,then the double girder gantry crane is better suited to your needs. Supported by two beams, the enhanced strength and stability of the double Girder gantry crane enables it to be used for tasks lasting eight hours or longer.
Double girders are utilised in heavier industries.
- Capacity up to 100 tonnes.
- Spans up to 30 metres.
- Internal or external bracing.
- 4 Wheel Drive.
- Girder walkway.
- Trolley platform.
- Pendant or radio control.
- Cable reel or conductor rail power supply systems
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What Are Gantry Cranes Used For?
Full gantry or semi-gantry cranes find widespread application in heavy fabrication settings and various outdoor yards, including rail yards, shipping and container yards, steel yards, and scrap yards. Their versatility extends to cement and precast applications, particularly in areas where they are involved in the forming and curing of slab concrete. The design of these cranes allows for outdoor usage, providing space for forklift trucks and other motorized traffic to operate underneath.
Compared to alternatives like jib cranes or workstation cranes, portable gantry systems offer enhanced flexibility. Jib cranes typically necessitate installation on a poured concrete foundation, becoming a permanent fixture once in place. On the other hand, smaller portable gantry cranes can perform similar tasks as jib cranes but provide the advantage of mobility, allowing businesses to adapt and optimize warehouse space as needed.
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Primarily, portable gantry cranes are employed for lifting and securing objects in place during fabrication or assembly processes. While the load may not necessarily be transported through the facility, the gantry itself can be easily relocated to work on different parts or equipment.
