Through employment of two booms the intake and reclaim capacity can be doubled without any difficulty according to SCHADE engineers. Circular storages, which offer the simple option of a covered area and – compared with longitudinal storages – result in a 50% smaller footprint whilst offering comparable storage capacity, can be realised by SCHADE with diameters of up to 150 metres.
Subject of the patent is a circular store which, in contrast to the solutions employed hitherto, features not just one, but two raisable and lowerable scraper booms on the central column. These scraper booms are positioned symmetrically to the central column in the storage area and are interlinked in such a manner that they serve as a mutual counterbalance and thus the traditional counterbalance can be dispensed with. The stacker boom can be stored in the conventional design mode on the central column, centrically and slewable or, in the form of a symmetrical design, cast off the material to the opposite sides. Also in this latter case, as with the scraper booms, a counterbalance is not required.
With the invention comes the advantage that, on simultaneous employment of both booms, an almost double intake or reclaim capacity is achieved compared with conventional circular storages.
Read more in the July/August 2013 issue of World Port Development