A rubber tyred gantry crane / RTG (crane), or sometimes transtainer, is a wheeled mobile

gantry crane A gantry crane is a crane built atop a gantry, which is a structure used to straddle an object or workspace. They can range from enormous "full" gantry cranes, capable of lifting some of the heaviest loads in the world, to small shop cranes, us ...

operated to ground or stack

intermodal container An intermodal container, often called a shipping container, is a large standardized shipping container, designed and built for intermodal freight transport, meaning these containers can be used across different modes of transport – from ship ...

s. Inbound containers are stored for future pickup by drayage trucks, and outbound are stored for future loading onto vessels. RTGs typically straddle multiple lanes, with one lane reserved for container transfers. Advantages:its mobility gives a rubber tyred gantry crane wide appliance Being mobile, RTGs are often powered by

diesel generator A diesel generator (DG) (also known as a diesel Genset) is the combination of a diesel engine with an electric generator (often an alternator) to generate electrical energy. This is a specific case of engine generator. A diesel compression-ig ...

systems (gensets) of . Due to the lack of an electrical grid to dump energy when containers are being lowered they often have large resistor packs to rapidly dissipate the energy of a lowering or decelerating container.Fuel Saving Flywheel Technology for Rubber Tired Gantry Cranes in World Ports
/ref> Diesel-powered RTGs are notorious polluters at ports, as each burns up to of

diesel fuel Diesel fuel , also called diesel oil, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and ...

. There are also electric rubber tired gantry cranes. The first electrified rubber-tyred gantry cranes (ERTG) in China was unveiled by the She Kou container terminal (SCT) in

Shenzhen Shenzhen (; ; ; ), also historically known as Sham Chun, is a major sub-provincial city and one of the special economic zones of China. The city is located on the east bank of the Pearl River estuary on the central coast of southern province ...

in Aug 2008. Rubber-tired gantry cranes are also being electrified at the

Port of Long Beach The Port of Long Beach, also known as the Harbor Department of the City of Long Beach, is a container port in the United States, which adjoins Port of Los Angeles. Acting as a major gateway for US–Asian trade, the port occupies of land with ...

to improve air quality, with funding from the

California Energy Commission The California Energy Commission, formally the Energy Resources Conservation and Development Commission, is the primary energy policy and planning agency for California. Created in 1974 and headquartered in Sacramento, the Commission'core respon ...

. Aside from the intermodal industry, RTGs also are extensively used in industry. Applications include erecting large unbalanced structures, assembling large manufacturing components, and positioning pipelines.

References

{{DEFAULTSORT:Rubber Tyred Gantry Crane Cranes (machines) Intermodal containers Port infrastructure