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Pinion of a turbine engine shaft having a web comprising a cross-linked structure

A cross-linked structure, pinion technology, applied in turbines, machines/engines, gas turbine installations, etc., can solve problems such as increased wind resistance loss, insufficient quality, and reduced pinion performance

Pending Publication Date: 2021-12-21
SAFRAN HELICOPTER ENGINES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, making the web into a hollow structure increases the windage loss and reduces the performance of the pinion, and the mass reduction achieved by this is still not enough

Method used

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  • Pinion of a turbine engine shaft having a web comprising a cross-linked structure
  • Pinion of a turbine engine shaft having a web comprising a cross-linked structure
  • Pinion of a turbine engine shaft having a web comprising a cross-linked structure

Examples

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Embodiment Construction

[0051]The following description relates to an example of a pinion suitable for use in a gear train of a reduction gearbox of a helicopter turbine engine. It will be appreciated that the pinion of the invention can be used with the same advantages for any gear to be mated with a turbine shaft.

[0052] In all the following descriptions, similar elements shown on the drawings are designated with the same reference numerals.

[0053] The structure of the turbine engine

[0054] figure 1 A helicopter turbine engine 10 is shown. The rotor (not shown) of the helicopter is driven by the free turbine 14 through a reduction gearbox, which in figure 1 is schematically marked with reference numeral 19 . The turbine engine 10 includes a compressor 11 , a combustor 12 , a coupled turbine 13 and a free turbine 14 . Trapped turbine 13 is coupled to compressor 11 by shaft 20 . A free turbine 14 is attached to a turbine shaft 15 . In a known manner, the turbine converts the energy relea...

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PUM

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Abstract

The present invention relates to a pinion for a gear train of an aircraft turbine engine, the pinion comprising: - a cylindrical body (2) extending along an axis and configured to engage with a shaft received in the cylindrical body, - a rim (4) concentric with the cylindrical body, - a web (3) defined axially by a front wall (32) and a rear wall (33) and extending radially from the cylindrical body to the rim, each of the front and rear walls having a density, the pinion comprising a cross-linked structure (5) around the cylindrical body between the front wall and the rear wall, the cross-linked structure comprising a unit cell repeated along three axes of a three-dimensional coordinate system, a density of the unit cell being strictly less than each of the densities of the front and rear walls.

Description

technical field [0001] The invention is in the field of power transmissions with gear trains for aircraft turbines. [0002] In particular, the invention relates to pinions for propeller shafts of aircraft turbines, as well as reduction gearboxes comprising pinions of this type, turbines comprising pinions of this type and methods of manufacture for pinions of this type. Background technique [0003] The mechanical power generated by the rotation of the movable part of the turbine is usually transmitted to other parts of the aircraft through a gear transmission. [0004] By way of example, a helicopter turbine engine comprises, in a known manner, a reduction gearbox enabling the transmission between the shaft connected to the free turbine and the output shaft. The reduction gearbox includes the gear train and the accessory drive train. Based on the rotational motion of the free turbine, the reduction gear train transmits the reduced rotational motion to the main drive gear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F02C7/36B33Y80/00F16H55/14
CPCF02C7/36B33Y80/00F16H55/14F16H2057/02091F16H55/17B22F5/009Y02P10/25B22F10/28B22F10/47F16H55/06
Inventor 雷米·约瑟夫·兰奎廷阿诺德·乔治斯·尼芬克尔安托尼·拉赫泰特
Owner SAFRAN HELICOPTER ENGINES