Endless accumulating conveyor

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 17/18 (2006.01) B65G 17/00 (2006.01) B65G 17/42 (2006.01) B65G 19/02 (2006.01) B65G 47/29 (2006.01)

Patent

CA 2213427

An endless accumulating conveyor has upper and lower guide rails for supporting pallets. An endless roller chain has an upper run extending along the upper guide rails and a lower run extending along the lower guide rails. A dogging device on each pallet is engageable between the rollers of the chain to move the pallet with the chain along the upper and lower runs. A friction clutch for the dogging device of each pallet causes the dogging device to release and slip past the rollers of the chain when the pallet encounters a predetermined resistance to movement as when it is desired to accumulate pallets. Mechanism is provided for positively propelling each pallet over the curved section at both ends of the conveyor from one run to the other without slipping.

Cette invention concerne un transporteur à accumulation qui comporte des glissières de guidage supérieur et inférieur supportant des palettes. Une chaîne à rouleaux sans fin comprend un brin supérieur passant dans la glissière supérieure et un brin inférieur passant dans la glissière inférieure. Les palettes sont entraînées par la chaîne via une griffe dont elles sont munies et qui s'engage entre les rouleaux de la chaîne. Un embrayage à friction équipant chacune des palettes commande l'effacement des griffes et le non entraînement de la palette correspondante lorsque celle-ci rencontre une résistance prédéterminée comme lorsqu'on souhaite accumuler un certain nombre de palettes. Un mécanisme est prévu pour entraîner chaque palette sans possibilité de glissement dans les sections courbes aux deux extrémités du transporteur.

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