| 摘要 |
Helical chutes for the perpendicular conveyance of cohesive bulk material, in particular for use in underground mining and tunnelling, comprising tubular sections, each of which forms part of the wear-plated helical spiral which hugs the helix shell. To increase the throughput and to prevent faults occurring during operation, the invention provides wearplates (8, 9, 32, 33) which have a continuous surface (15) in flow direction (16) and are at the same time designed to overlap one another in flow direction (16). <IMAGE>
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