Knife fixing method

B - Operations – Transporting – 27 – L

Patent

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Details

B27L 11/00 (2006.01) B23Q 1/28 (2006.01) B27G 13/10 (2006.01) D21B 1/06 (2006.01)

Patent

CA 2516708

The present invention concerns a method for fixing a knife in wood chipper apparatuses over the whole knife length between two steady surfaces. The fixing force is developed by means of a roller chain located between two counter surfaces and reversing its direction at each of its couplings, said roller chain having stationary end rollers and intermediate roller at the couplings, said intermediate rollers rolling during the press movement in the longitudinal direction of the chain. An external force is applied to the roller chain, said force changing its direction at the touching points of the rollers, so that the force applied to the roller chain affects to multiple points of the counter surfaces thus forming a prominent total pressing force.

L'invention concerne une méthode de fixation d'un couteau, dans des appareils de mise en copeaux, sur toute la longueur du couteau, entre deux surfaces immobiles. La force de fixation est développée au moyen d'une chaîne à galets située entre les deux surfaces opposées et inverse sa direction au niveau de chacun de ces accouplements. Cette chaîne à galets présente des galets d'extrémité stationnaires et des galets intermédiaires au niveau des accouplements. Les galets intermédiaires tournent lors du déplacement de la presse, dans la direction longitudinale de la chaîne. Une force extérieure est appliquée sur la chaîne à galets. La force change sa direction aux points de contact des galets, de sorte que la force appliquée à la chaîne à galets s'applique sur plusieurs points des surfaces opposées, ce qui permet de créer une force de pressage totale importante.

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