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Three advanced cranes, with a total value of £400,000, from Street Crane Company have been installed at Milbank Group’s newly opened floor factory. Business is booming for this building systems supplier and the new facility is designed to cope with an ever rising demand for pre-stressed and reinforced concrete flooring units.

At their Weeting site in Norfolk, Milbank has installed two 16 tonnes safe working load factory cranes. Each crane spans 34 metres and is fitted with twin 8 tonne hoists. Installed in the yard, is a 20 tonne SWL crane, spanning 30 meters and fitted with twin 10 tonne hoists.

All the cranes are of double girder construction for maximum strength and rigidity. Using twin hoists together ensures safe handling of larger/heavier loads while the flexibility to use a single hoist allows smaller loads to be moved efficiently. Load stability is a productivity and safety issue. To ensure stable high speed load transfer the cranes have an advanced load sway control system to regulate all crane movements.

Crane specifications have been carefully matched to the manufacturing process. Currently the factory produces around 1000 square metres of hollow core floor decking per day. This is due to double in the next expansion phase when throughput will rise to around 600 tonnes of concrete flooring per day. All crane mechanisms are therefore heavy duty reflecting the large number of heavy loads and high number of crane movements expected.

The cranes are employed in double hoist mode to transfer 50 metre slabs from the casting shop to a conveyor that then moves them to a cutting area. A homing system ensures that the cranes deliver the concrete sections to precisely the same location on the conveyor. Cranes are used in single hoist mode to move moulds and other process equipment. Control is by radio remote devices allowing the operators to position themselves perfectly for greatest safety and visibility.

Street Crane Company use sophisticated computer programmes to match crane specification to client needs. This ensures the high levels of performance and availability that are essential in process manufacturing. Milbank operate a number of cranes from several manufacturers. The effective performance of existing Street equipment influenced the selection of cranes for their new factory.

More Information:

Gus Zona, Tel. +44 (0)1298 812456, Fax. +44 (0)1298 814945
Street Crane Company, Chapel-en-le-Frith, High Peak, SK23 0PH, UK
E-Mail: admin@streetcrane.co.uk Web: www.streetcrane.co.uk

High/low resolution images are on the web at www.ainsmag.co.uk/st165/4068st1a.htm

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