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Roller pinions for driving an aircraft wheel in rotation

A technology of pinion and roller, applied in the direction of gear transmission, belt/chain/gear, wheel type, etc., can solve problems such as congestion and maintenance, and achieve the effect of saving space

Active Publication Date: 2018-10-23
SAFRAN LANDING SYSTEMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adapter elements and filter elements constitute additional elements that cause additional congestion and require additional maintenance in an already cramped area

Method used

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  • Roller pinions for driving an aircraft wheel in rotation
  • Roller pinions for driving an aircraft wheel in rotation
  • Roller pinions for driving an aircraft wheel in rotation

Examples

Experimental program
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Embodiment Construction

[0018] refer to figure 1 and 2 , the roller pinion of the invention firstly comprises a core 1 having a cylindrical hole 2 with a profile other than circular (in particular a grooved profile) to enable the pinion to be fitted On the drive shaft, such that the central axis X of the core coincides with the axis of rotation of the drive shaft. The core 1 has a spherical peripheral surface 3 . In this example, the core 1 is made of a metal block with grooves formed over its entire length, leaving regularly spaced sectors 4 extending from the hub 5 to the spherical peripheral surface 3 . The sectors 4 and thus the grooves are delimited by a plane 6 parallel to the central axis X. As shown in FIG. The pinion of the invention also has a cage 10 surrounding the core 1 and having a concentric spherical inner surface 11 facing the spherical outer peripheral surface 3 of the core 1 . Facing the groove, the cage 10 has a protrusion 12 extending into the groove to have a face 13 facing...

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PUM

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Abstract

A roller pinion (21) for rotating about a central axis (X) generally includes a core (1) having an axial bore (2) at its center for mounting on a drive shaft, a spherical outer surface (3) and recesses extending the length of the core. The recesses define faces (6) parallel to the central axis (X); the faces (6) have a plurality of regularly distributed sectors (4) extending between them. The roller pinion also includes a cage (10) which carries a roller and extend around the core, and has an concentric spherical inner surface (11) that faces a outer peripheral surface of the core and protuberances (12) facing the recesses of the core. The protuberances (12) extend in the recesses and have faces facing the recesses and faces (13) parallel thereto. Metal strips (14) arranged in bundles areprovided. Elastomer materials are interposed between the metal strips; and each metal strip is inserted in a space between the respective faces of one recess in the core and one protuberance of the cage.

Description

technical field [0001] The invention relates to a roller pinion for driving rotation of an aircraft wheel. Background technique [0002] It is known in aircraft that the landing gear is provided with actuators for driving the wheels in rotation, so that the aircraft can be moved without using the aircraft's aeroengines. Among the various solutions that have been conceived, one consists in providing a drive actuator having at its outlet a roller pinion constrained to be fixed to the aircraft Meshing gears on the rim of the wheel. Nevertheless, the deformations to which the aircraft wheel and the landing gear carrying the aircraft wheel are subjected during taxiing make it necessary to arrange the position of the roller pinions to fit linearly and angularly with respect to the aircraft wheel, and thus to incorporate elements into In movable or deformable drive trains. This is especially true if the drive actuator is designed to be movable between an engaged position in whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/40B64C25/34F16H55/17F16C13/00
CPCB64C25/34B64C25/405F16C13/00F16H55/17F16D3/221F16D3/64F16H55/14F16H55/10Y02T50/80F16D3/185F16H1/006F16H1/24F16F15/124
Inventor J-P·瓦斯林L·马尔雷特F·伊瓦尔蒂F·吉罗德M·达弗斯
Owner SAFRAN LANDING SYSTEMS