Thrust bearing for a gyratory crusher and method of...

B - Operations – Transporting – 02 – C

Patent

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B02C 2/04 (2006.01)

Patent

CA 2743933

A gyratory crusher comprises a crushing head on which a first crushing shell is mounted, and a frame on which a second crushing shell is mounted. The crusher has a trust bearing (24) which is made up of horizontal bearing plates (26, 27, 28) and which is located between a vertical shaft (2) and a pis-ton (30) arranged vertically below the same. The crusher further has a first space (40), which is adapted to receive a variable amount of pressurized liquid, which first space (40) is defined by the piston (30) and a piston housing (32) formed in the frame, and a second space (44) which is adapted to receive, by way of a duct (46), pressurized liquid from the first space (40), which second space (44) is located between the vertical shaft (2) and the piston (30) and at least partly accommodated in an opening in at least one of said bearing plates (26, 27, 28). The first space (40) and the second space (44) are adapted by means of the liquid to transmit forces from the crushing head to the piston housing (32), in order that the load on the trust bearing (24) is relieved.

L'invention concerne un concasseur giratoire comportant une tête de concassage sur laquelle est montée une première coque de concassage, ainsi qu'un bâti sur lequel est montée une deuxième coque de concassage. Le concasseur est muni d'un palier (24) de butée constitué de plaques horizontales (26, 27, 28) d'appui et situé entre un arbre vertical (2) et un piston (30) disposé verticalement au-dessous de celui-ci. Le concasseur comporte en outre un premier espace (40) prévu pour recevoir une quantité variable de liquide sous pression, ledit premier espace (40) étant défini par le piston (30) et un logement (32) de piston formé dans le bâti, et un deuxième espace (44) prévu pour recevoir, par l'intermédiaire d'un conduit (46), du liquide sous pression provenant du premier espace (40), ledit deuxième espace (44) étant situé entre l'arbre vertical (2) et le piston (30) et au moins partiellement logé dans une ouverture pratiquée dans au moins une desdites plaques (26, 27, 28) d'appui. Le premier espace (40) et le deuxième espace (44) sont prévus pour transmettre, au moyen du liquide, des forces de la tête de concassage au logement (32) de piston afin d'alléger la charge exercée sur le palier (24) de butée.

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