Waste shredder, component parts and maintenance method

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 18/18 (2006.01)

Patent

CA 2410565

The invention concerns a waste shredder, such as a double-rotor shredder for motor vehicle tyres, some of its components (rotor, shearing wheel) and a maintenance method for said shredder. The shredder comprises at least a rotor having at least a shearing wheel including: a support ring (6) adapted to be driven in rotation by a shaft (3) and defining a plurality of peripheral sections, a plurality of shearing blades (8, 9) arranged to match the sections so as to be urged in radial projection relative to the peripheral surface of the support ring (6). Said wheel is characterised in that it comprises a plurality of blade-holding parts (7), whereon the blades (8, 9) are fixed with removable fixing means (11, 13) accessible from the outer lateral shearing surfaces of the blades, the blade-holding parts (7) being adapted to be pressed or to be fixed, by removable fixing means (17) on the sections of the support ring (6) peripheral surface.

L'invention concerne un broyeur de déchets, tel qu'un broyeur birotor de pneumatiques de véhicules, certaines de ses parties constitutives (rotor, roue de cisaillement), ainsi qu'un procédé de maintenance dudit broyeur. Le broyeur comporte au moins un rotor possédant au moins une roue de cisaillement comprenant: une couronne-support (6), adaptée pour être entraînée en rotation par un arbre (3) et définissant une pluralité de sections périphériques, une pluralité de couteaux de cisaillement (8, 9) disposés en correspondance avec les sections de façon à venir radialement en saillie par rapport à la face périphérique de la couronne-support (6), ladite roue étant caractérisée en ce qu'elle comprend une pluralité de pièces porte-couteaux (7), sur lesquelles sont fixés les couteaux (8, 9) par des moyens de fixation amovible (11, 13) accessibles depuis les faces latérales extérieures de cisaillement des couteaux, les pièces porte-couteaux (7) étant adaptées pour s'appliquer et être fixées, par des moyens de fixation amovible (17), sur les sections de la face périphérique de la couronne-support (6).

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