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Epicyclic reduction gear with fluid transfer duct and aircraft propeller turbine with same

A reduction gear and fluid transmission technology, which is applied in the direction of machines/engines, gear transmission devices, gas turbine devices, etc., can solve problems that are not conducive to the integration of reduction gears, and achieve the effect of reducing running clearance and improving integration

Active Publication Date: 2018-04-10
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Said sleeve thus takes up a lot of space in the center of the turboshaft engine 1 , which is very detrimental to the integration of the reduction gear

Method used

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  • Epicyclic reduction gear with fluid transfer duct and aircraft propeller turbine with same
  • Epicyclic reduction gear with fluid transfer duct and aircraft propeller turbine with same
  • Epicyclic reduction gear with fluid transfer duct and aircraft propeller turbine with same

Examples

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Embodiment Construction

[0039] refer to figure 1 and image 3 , in order to be able to counter-rotate the two propellers, the upstream propeller 2 and the downstream propeller 3 , the reduction gear 10 is differential and has opposite epicyclic gear trains. To this end, said reduction gear comprises, with respect to the longitudinal axis A, a planetary input shaft in the form of a gear wheel 34 , which is mounted in this example by a splined connection to a turbine shaft 36 , which runs along the The reduction gear is driven while the direction of rotation is turned. Planetary gears 37 mesh around the input shaft and are supported by a planetary gear carrier 38 that therefore rotates in the opposite direction of rotation to the input shaft, and an outer ring gear 39 meshes with the planetary gears and thus rotates in the same direction of rotation as the input shaft and with the planetary gears The frame 38 rotates in the opposite direction.

[0040] When applied to a turboshaft engine 1 with a pa...

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PUM

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Abstract

Epicyclic reduction gear (10) comprising a planetary input shaft (35), a planetary gear (36) and two lateral sides (41, 43) meshing around said shaft and supported by a planetary carrier (37) . According to the invention, the reduction gear comprises at least one fluid transfer duct (54) adapted to be connected to a fluid supply and passing through the planet carrier (38) and from the first lateral side (41) of the reduction gear Up to the second lateral side (43) of the reduction gear is rotatably connected to the planet carrier to open and distribute fluid on the outside of the reduction gear.

Description

technical field [0001] The present invention relates to the field of planetary reduction gears, and more particularly but not exclusively to the application of such planetary reduction gears to turbine engines having a pair of counter-rotating propulsion propellers. Background technique [0002] In a preferred application, a turbine engine with a propulsion propeller is a turboshaft engine designated by the expression "open rotor" or "unducted fan", and since said turboshaft engine is compared to the The multi-flow turbojet engine has lower fuel consumption, and this turbine engine in particular has been the subject of many developments. The structure of the propulsion system of the open rotor type differs from that of the turbojet engine by the fact that the fan is no longer located inside but outside and consists of two coaxial counter-rotating propellers, The counter-rotating propellers of the shaft can be located upstream or downstream of the gas generator. [0003] A ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04
CPCF02C7/36F16H57/0427F16H57/0471F16H57/0482F05D2260/40311F05D2260/98F16H57/04F16H57/0486F16H1/28F16H57/043F16H57/082
Inventor 奥古斯丁·克尔列特斐克·布德比匝吉勒斯·阿兰·查理尔
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A