Thermally decoupled bearing arrangement

Details Thermally decoupled bearing arrangement Thermally decoupled bearing arrangement

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 17/22 (2006.01) F16C 33/04 (2006.01) F04D 29/046 (2006.01) F16J 15/34 (2006.01)

Patent

CA 2753819

The invention relates to a bearing arrangement for supporting a shaft (3), comprising a bushing (2) in which the shaft (3) is received, a circumferential ring gap (4) being present between the bushing (2) and the shaft (3), and the bushing (2) and the shaft (3) being made of materials having different thermal expansion coefficients, a connection arrangement (21) comprising a retaining element (8; 32, 33, 34) connected to the shaft (3) and a rotating bearing ring (7) in order to provide a centering support of the bushing (2) at the outer circumference (2b) thereof relative to the shaft (3), a stationary bearing ring (6, 6') that is disposed radially outside of the bushing (2) and forms an axial sliding bearing (14) with the rotating bearing ring (7, 7'), and is characterized in that the connection arrangement (21) comprises a circumferential annular band element (9, 9'), wherein the annular band element (9, 9') is connected to the rotating bearing ring (7, 7') by means of a shrinkage connection in order to form an interconnected element (23), wherein the interconnected element (23) is inserted in a recess (8a; 32a) of the retaining element (8; 32) with a centering snug fit, and the annular band element (9, 9') is connected to the retaining element (8; 32) in the axial direction (X-X) of the shaft (3).

L'invention concerne un agencement de palier destiné à recevoir un arbre (3), avec un coussinet (2) dans lequel l'arbre (3) est reçu, une fente annulaire (4) se situant entre le coussinet (2) et l'arbre (3) et le coussinet (2) et l'arbre (3) étant fabriqués dans des matériaux ayant des coefficients de dilatation thermique différents, avec un agencement de liaison (21) qui comprend un élément de maintien (8 ; 32, 33, 34) relié à l'arbre (3) et une bague de palier (7) rotative, afin de réaliser un appui centré du coussinet (2) sur sa circonférence extérieure (2b) par rapport à l'arbre (3), avec une bague de palier stationnaire (6, 6') qui est disposée radialement en dehors du coussinet (2) et qui, avec la bague de palier rotative (7, 7'), forme un palier lisse axial (14). L'agencement de palier selon l'invention est caractérisé en ce que l'agencement de liaison (21) comprend un élément annulaire (9, 9'). L'élément annulaire (9, 9') est relié à la bague de palier rotative (7, 7') par un assemblage fretté (22) afin de former un élément composite (23). L'élément composite (23) est inséré par un montage ajusté dans un logement (8a ; 32a) de l'élément de maintien (8 ; 32) et l'élément annulaire (9, 9') est relié avec l'élément de maintien (8 ; 32) dans la direction axiale (X-X) de l'arbre (3).

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