System for connecting an engine shaft with a retractable nut
AssigneeSnecma
InventorRegis Eugene Henri SERVANT
Life of this patent
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Abstract
The invention relates to a system for fastening the end of a gas turbine engine shaft (4) engaged inside a sleeve (15) supported by a bearing (3). Said system comprises a nut (16) and is characterized in that the nut (16) is screwed at one end inside said sleeve (16) and is connected by a segment-type connection (18) with the shaft at the other end.
Claims12
A system for fastening the end of a gas turbine engine shaft engaged inside a sleeve supported by a bearing, by means of a nut, wherein the nut is screwed at one end inside said sleeve, and is connected by a segment-type connection with the shaft at the other end.
The system as claimed in one of the preceding claims, comprising a nut retainer.
The system as claimed in one of the preceding claims in which the shaft and the sleeve are guided one within the other by means of axial splines.
The system as claimed in one of the preceding claims in which the shaft is the HP compressor shaft of a twin-spool gas turbine engine, the sleeve being the bevel wheel for driving the transmission shaft of the accessory gearbox.
The system as claimed in the preceding claim in which the bevel wheel comprises a means for clamping the bearing axially during the screwing of the nut.
A method of mounting the HP compressor shaft of a twin-spool turbine engine in its front bearing, comprising the heating of the bearing, the mounting of a nut of the system as claimed in one of the preceding claims on the shaft, and then the screwing of the nut.
Dependencies are inferred from the claim text.