Two functions:
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Stacking function – Receiving bulk material from a yard conveyor and transfer it to configured storage pile patterns (e.g. chevron, windrow and cone).
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Reclaiming function – Recovering material from stockpiles and transfer it onto a yard conveyor for further disbursement or use.
All functions can be controlled remotely.
Three basic movements:
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Luffing - This is the vertical up/down movement of the boom powered by two hydraulic cylinders.
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Travelling - Travel trucks (usually in multiples of 4) move the machine on rail track along the stockpile yard.
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Slewing - This is rotation of the boom around its central axis to align or place the stockpile where required.