Cellular encasement protection system for roller assembly

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 39/09 (2006.01) F16C 33/76 (2006.01)

Patent

CA 2646941

A roller assembly (1 ) having a roller tube (10), a fixed shaft (12) inside the roller tube (10), a bearing (14) mounted on the shaft (12), an inner casing (16) mounted on the bearing (14) and rotatable with respect to the shaft (12), an outer casing (18) fixedly mounted on the shaft (12), a shield cap (20) mounted on the inner casing (16), and a seal member (34) mounted between the roller tube (10), the shield cap (20) and the inner casing (16) for sealing the roller assembly (1 ). Facing walls of the inner casing (16) and outer casing (18) define inner cells (22) and a first labyrinth path for reducing migration of contaminants through the inner cells (22). Facing walls of the outer casing (18) and shield cap (20) define outer cells (24) and a second labyrinth path for reducing migration of contaminants through the outer cells (24). The facing walls of the outer casing (18) and shield cap (20) are provided with gel (30) for further reducing migration of contaminants through the outer cells (24).

L'invention concerne un ensemble rouleau (1) comprenant un tube (10) rouleau, un arbre (12) fixe à l'intérieur du tube (10) rouleau, un roulement (14) monté sur l'arbre (12), un boîtier interne (16) monté sur le roulement (14) et pouvant être rotatif par rapport à l'arbre (12), un boîtier externe (18) monté de manière fixe sur l'arbre (12), un capuchon de protection (20) monté sur le boîtier interne (16), et un élément joint (34) monté entre le tube (10) rouleau, le capuchon de protection (20) et le boîtier interne (16), pour rendre étanche l'ensemble rouleau (1). Les parois se faisant face du boîtier interne (16) et du boîtier externe (18) définissent des cellules internes (22) et un premier chemin de labyrinthe pour réduire la migration de contaminants à travers les cellules internes (22). Les parois se faisant face du boîtier externe (18) et du capuchon de protection (20) définissent des cellules externes (24) et un second chemin de labyrinthe pour réduire la migration de contaminants à travers les cellules externes (24). Les parois se faisant face du boîtier externe (18) et du capuchon de protection (20) sont munis de gel (30) pour réduire davantage la migration de contaminants à travers les cellules externes (24).

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