Tapered bearing housing

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

Patent

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Details

F16C 27/02 (2006.01) F01D 25/16 (2006.01) F16C 17/03 (2006.01)

Patent

CA 2238985

A bearing structure having an annular cage (124) and an annular housing (114) that optionally mate at frustogeometrical surfaces (115a, 125) for supporting and positioning a rotatable shaft (102) of a turbomachine and that optionally provides a squeeze film damper between the frustogeometrical surfaces of the annular cage and the annular housing. A bearing structure having an annular cage (124) and an annular housing (114) that optionally mate at frustogeometrical surfaces (115a, 124) for supporting and positioning rotatable shaft (102) of a turbomachine and that optionally provides an externally adjustable squeeze film damper between the frustogeometrical surfaces of the annular cage and the annular housing. The squeeze film damper is defined by two annular squeeze film seals (156a, 158a) positioned in respective annular squeeze film seal grooves (156, 158) formed in the frustogeometrical radially outer surface of the annular cage (124). Lubricant is also delivered to the squeeze film damper which serves as the damping medium.

L'invention porte sur la structure d'un palier comportant une cage annulaire (124) et une boîte annulaire (114) éventuellement adaptables à des surfaces tronconiques (115a, 125), destinée à porter et à positionner l'arbre tournant (102) d'une turbomachine et pouvant facultativement comporter un coussin amortisseur à film mince situé entre les surfaces tronconiques de la cage annulaire et de la boîte annulaire. L'invention porte également une structure de palier comportant une cage annulaire (124) et une boîte annulaire (114) éventuellement adaptables à des surfaces tronconiques (115a, 124) et destinée à porter et à positionner l'arbre tournant (102) d'une turbomachine et pouvant facultativement comporter un coussin amortisseur à film mince réglable de l'extérieur et situé entre les surfaces tronconiques de la cage annulaire et de la boîte annulaire. Le coussin amortisseur à film mince est délimité par deux joints (156a, 158a) placés dans leurs gorges d'étanchéité respectives (156, 158) usinées dans la surface tronconique extérieure radiale de la cage annulaire (124). Du lubrifiant est également fourni au coussin amortisseur à film mince servant de milieu amortisseur.

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