Disk friction assembly, in particular for heavy truck

Details Disk friction assembly, in particular for heavy truck Disk friction assembly, in particular for heavy truck

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 55/32 (2006.01) F16D 65/12 (2006.01) F16D 65/847 (2006.01) F16D 55/00 (2006.01)

Patent

CA 2291628

A rotor disk (20) is arranged between two stator disks (30, 40; 130, 140), the disks being made in thermostructural composite material at least for the wear parts. A first supporting structure (50, 150) has a bell shape with a bottom part (52) whereon rests the first stator disk (30, 130) and part of the skirt (70, 170) linked to the bottom part (52) and encloses the disks (20, 30, 40), the bell-shaped structure having cooling means (170, 174) for evacuating the heat generated by the mutual friction of the disks. A second supporting structure (80, 180) has a part in the shape of an annular support plate whereon rests the second stator disk (40, 140); and the bell-shaped structure bottom part (52) and the support plate (80, 180) are provided with cotters (60) or radial ribs (84) co-operating with the corresponding radial housings (36) formed in the outer surfaces (33, 44) of the stator disks (30, 40; 130, 140) to block the latter in rotation relative to the supporting structures (50, 150; 80, 180).

Un disque rotor (20) est disposé entre deux disque stators (30, 40; 130, 140), les disques étant en matériau composite thermostructural au moins dans des parties d'usure. Une première structure d'appui (50, 150) présente une forme de cloche avec une partie de fond (52) sur laquelle s'appuie le premier disque stator (30, 130) et une partie de jupe (70, 170) qui se raccorde à la partie de fond (52) et entoure les disques (20, 30, 40), la structure en forme de cloche présentant des moyens de refroidissement (170, 174) pour favoriser l'évacuation de la chaleur produite par le frottement mutuel des disques. Une deuxième structure d'appui (80, 180) a une partie en forme de plaque d'appui annulaire sur laquelle s'appuie le deuxième disque stator (40, 140) et la partie de fond (52) de la structure en forme de cloche et la plaque d'appui (80, 180) sont munies de clavettes (60) ou nervures radiales (84) qui coopèrent avec des logements radiaux correspondants (36) formés dans les faces extérieures (33, 44) des disques stators (30, 40; 130, 140) afin d'immobiliser ceux-ci en rotation par rapport aux structures d'appui (50, 150; 80, 180).

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