Portable apparatus for crushing rock and other hard material...

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 4/12 (2006.01)

Patent

CA 2617929

The invention includes a rock crushing machine and method, the machine having a base and a jaw assembly secured to the base. The jaw assembly is adapted to receive rock as input material to be at least partially crushed. The jaw assembly is provided with an arcuate reaction surface that progressively engages the input material. A hollow crushing roll has an axial inner chamber that has an axis of symmetry (O). The crushing roll is a driven member that has an outside surface which forms a crushing zone between it and the reaction surface of the jaw assembly. Positioned at least partially within the crushing roll, an eccentric shaft serves as a driving member. The eccentric shaft has an axis of rotation (E), that axis being displaced from the axis (O) by a distance (T). A drive mechanism is coupled to the eccentric shaft so that as the eccentric shaft turns, rotational and centrifugal forces can be transmitted to the crushing roll by a torque transmitting device or other roll drive torque biasing mechanism.

L'invention concerne une machine et un procédé de concassage de pierres, ladite machine comportant une base et un système de mâchoires fixé sur la base. Le système de mâchoires est adapté pour recevoir des pierres comme matériaux de départ, destinés à être concassés, au moins en partie. Le système de mâchoires comporte une surface de réaction arquée, qui entre progressivement dans le matériau de départ. Un rouleau de concassage creux présente une chambre intérieure axiale qui comporte un axe de symétrie (O). Le rouleau de concassage est un élément commandé qui présente une surface extérieure, qui constitue une zone de concassage entre lui et la surface de réaction du système de mâchoires. Un arbre excentrique sert d'élément de commande, positionné au moins en partie à l'intérieur du rouleau de concassage. L'arbre excentrique présente un axe de rotation (E), ledit axe étant déplacé de l'axe (O), d'une distance (T). Un mécanisme de commande est accouplé à l'arbre excentrique, de sorte que ledit arbre excentrique tourne, afin que des forces rotationnelle et centrifuges puissent être transmises au rouleau de concassage par un dispositif de transmission de couple ou tout autre mécanisme de polarisation du couple d'entraînement de rouleau.

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