| 摘要 |
PROBLEM TO BE SOLVED: To lighten a scratching part in a continuous unloader using a bucket conveyor, simplify the structure and select tension and suspension of the bucket conveyor according to circumstances. SOLUTION: A tip sprocket 7 in front of a base end sprocket 5 fitted on an elevating/lowering frame FS is fitted on a tip frame FF so as to be movable in the horizontal direction by a cylinder MT for tension, an elevator frame FE and the tip frame EF are connected by parallel first link 9 and second link 12, and the elevating/lowering frame FS and the second link 12 are connected by a third link 15. Each link 9, 12 and 15 rotates, following vertical movement of the elevating/lowering frame FS by the cylinder MS for elevating/ lowering. By moving the tip frame FS, the length of a raking section K is changed, the length of the section K is adjusted by the cylinder MT for tension and the bucket conveyor 1 is made into a tension state or a suspension state.
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