Conveying
Large rotating drums used as digesters in waste processing Industry
aspect here and therefore the method used to stop and start the drives is equally
Belt conveyors and also tensioning systems in bulk handling Industry
unloaders and tunnel boring machines - Large machines with multi axis controls which are needed for the linear move- ments and low speed drives of the main bucketwheel or bucket elevators. These are used in ports, large power sta- tions or steelworks for handling stored coal, iron ore and other minerals. • Train positioning and wagon unload- ing tipplers - It is important not to hold up locomotives and so these systems enable the automatic decoupling, positioning and unloading of wagons into underground hoppers. They minimise idle time while rapid loading of wagons is also ena- bled by multi clam shell door systems. • Drums - There are many applications using large rotating drums. Inertia is the important
critical. Some are heated to high
temperatures such as cement kilns, furnaces or drying drums or apply pressure and steam such as waste autoclaves. Other types are just large such as digesters and diffusers. It is often required to drive with more than one drive making load sharing important. The mode of driving can be on the axis, using a pinion on a girth gear or by friction rollers on rings. Hydraulic drives provide a very good system for all types. • Baling Presses - When plants produce large volumes of product one high cost is that of transport. One of the best ways to re- duce these costs is to compress the materials into small compact bales so more material can be transported on a wagon. Some plants have many baling presses fed from a single ring main hydraulic system which provides a very economical way to operate many machines from one power source.
• Car shredding plants - Cars and other metal wastes end up at the fragmentation plant in bales or fl attened by hydraulic presses . The material is fed onto a large hydraulically driven feeder which conveys the material to the hammermill. A roll feeder squashes the material and feeds it slowly into the mill where the rotor nib- bles away the material into small pieces to enable sorting into differing material streams of steel, aluminium, glass, plas- tics, non-ferrous etc for recycling.
The modern production environment demands reliability and fl exibility from plant equipment, allowing it to cope with the wide range of variables which may occur. This is essential if high productivity is to be sustained and profi t levels to be maximised. Rexroth puts you in touch with leading engineers in heavy systems engineering incorporating hydraulic drive systems and controls, servo drives and controls, pneumatics, linear and factory automation. The scope of Rexroth products for heavy engineering projects is unrivalled and thanks to its expertise in applications, provides a comprehensive service and unique solutions to all heavy industries. ■
For more information contact Bosch Rexroth on tel: +44 192 4220 100 or visit:
www.boshrexroth.co.uk
12-14 June 2012 Antwerp Expo, Belgium
The market-leading conference for the people who own, move & handle containerised cargo
7 Conference 7 Trade Exhibition 7 Free Seminars 7 Networking
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www.wysetech.co.uk www.solidsandbulk.co.uk Solids and Bulk Handling June 2012 15
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