Pulley

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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Details

F16H 55/50 (2006.01)

Patent

CA 2328147

A pulley (1) consists of a pulley basic body (3) [sic] which has a cylindrical outer circumferential surface (8). Sitting on this cylindrical outer circumferential surface (8) is a tire (3), which is of sandwich-like design with regard to its radial extent. This results in a plurality of rings (13, 14, 15) concentric to one another. The ring (13) which is furthest on the inside in the radial direction and the ring (15) which is furthest on the outside in the radial direction are in each case elastomeric rings, whereas a reinforcing ring (14) is located between them. The elastomeric outer ring (15) is harder than the elastomeric inner ring (13), so that a very abrasion-resistant surface is achieved, over which the rope runs, whereas the elastomeric inner ring (13) provides for adequate resilience. The reinforcing ring (14) is provided in order to distribute the rope load as uniformly as possible over the elastomeric inner ring (13 ).

L'invention concerne une poulie (1) qui comprend un corps de base (3) présentant une surface périphérique extérieure cylindrique (8) sur laquelle est placé un bandage pneumatique (3) conçu en sandwich par rapport à sa dimension radiale. Cette conception entraîne la formation de plusieurs anneaux concentriques (13, 14, 15). L'anneau (13), situé le plus à l'intérieur dans le sens radial, et l'anneau (15), situé le plus à l'extérieur dans le sens radial, sont des anneaux élastomères, tandis qu'un anneau de renforcement (14) est placé entre les deux. L'anneau élastomère extérieur (15) est plus dur que l'anneau élastomère intérieur (13) afin de créer une surface très résistante à l'abrasion, sur laquelle se déplace le câble, tandis que l'anneau élastomère intérieur (13) assure une souplesse suffisante. L'anneau de renforcement (14) permet de répartir la charge du câble de la façon la plus homogène possible sur l'anneau élastomère intérieur (13).

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