| 摘要 |
The invention concerns a device (10) for transporting material such as concrete, comprising a flexible conduit (12) connected to a hopper (12), means for deforming the conduit comprising fist and second deforming elements (20, 22) mobile transversely to the conduit, a compressing element (24) located between the deforming elements (20, 22) also mobile transversely to the conduit, means for injecting air (26) and means (34, 36) for timing the air injection and the movements of the deforming and compressing elements.
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