| 摘要 |
PURPOSE:To shorten a span of staying time inside a hopper, by dumping a conveyed load out of a feed conveyor into a relatively small capacity hopper upon selection, while selecting a dumping direction to the other hopper according to what the specified quantity of the conveyed load is stored in one hopper. CONSTITUTION:A conveyed load is dumped in a hopper of storage tanks 4 and 5 from a delivery end 6 via feed conveyors 1 and 2, making the load drop on a conveyed surface 19a of a selector conveyor 19, and it is further conveyed in a right direction by this conveyor 19 and dropped through a projection port 9 of a hopper 7 at the right. With this constitution, subsiding sand is gradually stored inside the hopper 7, and when a stored quantity reaches the upper limit, it is detected by a selecting device 21 whereby a dumping direction of the selector conveyor 19 is selected by a reverse command signal out of a control part 24, thereby starting the projection of the subsiding sand toward a hopper 8 at the left. The storage quantity of these hoppers 7 and 8 is relatively small in capacity so that it is made almost the same as the loading capacity of a truck 18, thus storage and delivery are carried out alternately between these hoppers 7 and 8.
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