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Accessory gearbox for gas turbine engine

A gas turbine and gearbox technology, applied in the field of gas turbine engines and turbine engines, can solve problems such as reducing the thickness of the gearbox

Active Publication Date: 2017-02-22
HISPANO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be noted that roller bearings have a misalignment capability that requires a minimum space between the axes and that this space between the axes limits the possibility of reducing the thickness of the gearbox

Method used

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  • Accessory gearbox for gas turbine engine
  • Accessory gearbox for gas turbine engine
  • Accessory gearbox for gas turbine engine

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 The end of an accessory gearbox of a turbine engine according to the prior art is shown in cross section. It consists of a housing, typically cast and then machined, into which a gear is mounted for receiving a pinion for driving one of the accessories attached to the accessory gearbox. Two pinions are shown in the figure: a first pinion 10 is attached to the input shaft 11 in the AGB and a second pinion 20 includes internal splines 12 for driving the accessory.

[0018] Once the gear is in place in the housing 1 , the opening through which the shaft of the drive accessory passes is closed by a cover in order to ensure that the assembly is fluid tight and that one of the bearings of the gear's shaft is supported. In the case of the first gear 10 , the cover 13 closes the opening on the input shaft 11 side. As far as the pinion 20 is concerned, the cover 14 closes the opening through which the first drive shaft 12 passes. As can be seen from the gears, they a...

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PUM

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Abstract

The invention relates to an accessory gearbox capable of driving the accessory devices of a gas turbine engine, such as an aircraft engine. Said accessory gearbox includes a housing and a plurality of gear wheels having axes that are parallel to one another inside the housing. The housing includes a means for attaching the accessory devices to the wall of the housing and driving them, via the gear wheels, through openings in the wall of the housing. The gear wheels are supported in the housing by rolling-element bearings. Each rolling element includes a first ring that is stationary relative to the housing, and a movable ring, secured to the gear wheel, wherein at least one (110) of said gear wheels is supported by a single rolling element (120).

Description

technical field [0001] The field of the invention is the field of turbine engines, in particular gas turbine engines for aircraft propulsion. The present invention relates to a housing for driving an accessory device associated with such a turbine engine, generally known by the term "accessory gearbox" and its acronym AGB. Background technique [0002] Some of the energy produced by the engine is used to drive various components of its equipment. The required power is generally exported mechanically on the shaft of the high pressure body of the gas turbine engine through an output shaft which is connected to the rod of the input pinion in the accessory gearbox. The gearbox is mounted on the casing of the engine and contains a number of components of equipment or accessories such as supporting generators, alternators, hydraulic fuel and oil pumps, starters and the like. [0003] Gearboxes include an elongated housing within which gears are mounted to form a gear train that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/16F02C7/32
CPCF01D25/16F02C7/32F05D2220/323F05D2240/50F05D2260/4031F16C2360/23F16H1/20F16H57/0031
Inventor 鲍里斯·莫雷利史蒂芬·普讷拉-尤塞科朱利安·费尔
Owner HISPANO
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