Arrangement for mounting two coaxial shaftlines

Details Arrangement for mounting two coaxial shaftlines Arrangement for mounting two coaxial shaftlines

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/16 (2006.01) F02C 7/06 (2006.01) F02C 7/32 (2006.01)

Patent

CA 2445770

The invention concerns an arrangement with two concentric shaftlines (15, 16) one of which overlaps the other, wherein a gasket-bearing sleeve (38) interposed therebetween is conical and supported on a spacer (40) of the outer shaftline, so that a nut (19) for mounting the front end is accessible from the rear passing through the gap (43) between the two shaftlines (15, 16), thereby enabling the nut to be unscrewed and the outer shaftline to be dismounted. The invention is applicable to front bearings of high pressure shaftlines of gas turbines and enables the high pressure body to be dismounted from the rear, without having to further detach components such as a fan at the front of the machine. The arrangement does not prevent a meshed gear (20) from being mounted.

Dans un agencement à deux lignes d'arbres (15, 16) concentriques dont l'une dépasse de l'autre, un manchon porte-joints (38) jeté entre elles est conique et s'appuie sur une entretoise (40) de la ligne d'arbres externe, afin qu'un écrou (19) de montage de l'extrémité antérieure soit accessible de l'arrière en passant par l'espace (43) entre les deux lignes d'arbres (15, 16), ce qui permet de dévisser l'écrou et de démonter la ligne d'arbres externe. L'invention peut s'appliquer aux paliers avant des lignes d'arbres à haute pression de turbines à gaz et permet de démonter le corps à haute pression par l'arrière, sans devoir démonter en outre des équipements tels qu'une soufflante à l'avant de la machine. Le montage d'un pignon (20) de prise de mouvement n'est pas compromis.

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