Stump grinding apparatus having a rotatable toothed disc

B - Operations – Transporting – 27 – G

Patent

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Details

B27G 13/08 (2006.01) A01G 23/06 (2006.01)

Patent

CA 2488627

A stump grinding mechanism includes a disc having recesses formed in an outer peripheral surface thereof. Peripheral cutting assemblies are mounted in respective recesses. Each cutting assembly includes a holder fixed in the recess, and a cutter tooth mounted in the holder. The cutter tooth includes a shank extending through the holder and secured thereto by a nut. The nut is disposed within a pocket of the holder to be shielded during a cutting operation. The holder includes gauge marks to facilitate a proper angular orienting of the cutting assembly within the recess. Some of the cutter teeth have flat cutter faces optimized for cutting wood fiber, whereas others of the cutter teeth have cutter faces defined by converging surface portions to be optimized for cutting/displacing rocks.

Un mécanisme broyeur de souches comprend un disque doté d'indentations formées dans une surface périphérique extérieure de celui-ci. Les ensembles de coupe périphériques sont montés dans des indentations respectives. Chaque ensemble de coupe comprend un dispositif de retenue fixé dans l'indentation et une dent coupante montée dans le dispositif de retenue. La dent coupante comprend une tige se prolongeant à traversant le dispositif de retenue et fixée à celle-ci par un écrou. L'écrou est placé dans une pochette du dispositif de retenue pour le protéger pendant une opération de coupe. Le dispositif de retenue comprend des repères d'étalonnage pour faciliter une orientation angulaire appropriée de l'ensemble de coupe dans l'indentation. Certaines dents coupantes ont des faces de coupe aplaties optimisées pour couper des fibres ligneuses, alors que d'autres dents coupantes ont des faces de coupe définies par des portions de surface convergentes pouvant être optimisées pour la perforation et le déplacement des roches.

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