| 摘要 |
<p>A conveying and screening apparatus of the type stated in which the structure (20) has rail means (38) provided extending towards the discharge end of the elevator (10). A sub-structure (34) is provided having wheel arrangements whose wheels (36) engage and track the rail means (38). The screen box (12) is pivotally supported on said sub-structure (34). Means to move the sub-structure (34) along the rail means (38) is provided whereby the screen box (12) is movable between an in-use position extending from the discharge end of the conveyor (22) and an out-of-use position withdrawn below the structure (20).</p> |
