| 摘要 |
A multi-deck screening plant (10) which comprises: a chassis (11); upper and lower screen decks (12, 13) mounted on the chassis (11), one above the other, and each sloping downwardly from an upper receiving end (14, 15) to a lower discharge end (16, 17) from which over-sized material can be discharged, such material being too large to pass through the screening apertures of each deck (12, 13); an upper frame arranged to support the upper deck (12) and including longitudinal support beams (19) extending from the upper end (14) to the lower end (16) of the upper deck (12) and underlying the upper deck (12); and a lower frame arranged to support the lower deck (13) at a level in which the plane of the deck (13) is located at or close to the level of the underside of the support beams (19) of the upper frame.
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