Aircraft turbojet engine nacelle air intake maintenance trolley
View Patent ↗This maintenance trolley ( 17 ) for the air intake ( 9 ) of the nacelle of an aircraft turbojet engine is notable in that it comprises a base ( 19 ) and a platform ( 23 ) cantilever-mounted on this base ( 19 ) and designed to enter said air intake ( 9 ) without contact therewith.
1. A maintenance trolley for an air intake of an aircraft turbojet engine nacelle, comprising:
a base;
a platform which is cantilever-mounted on the base;
at least one post supporting the platform,
wherein the platform, the base and the at least one post define a region into which a lower part of an outer structure of the air intake of the aircraft turbojet engine nacelle fits and which enters said air intake without contact therewith; and
a rubber buffer attached to a vertical part of the at least one post, the rubber buffer configured to provide a minimum distance from said lower part of the outer structure of the air intake when said lower part of the outer structure of the air intake butts against the at least one post via the bumper.
2. The trolley as claimed in claim 1 , said air intake comprising a lip and said turbojet engine comprising a fan, wherein a length of the cantilevered part of said platform is at least equal to a horizontal distance separating a lower edge of said lip from blades of said fan, decreased by a minimum safety distance of an end of said platform in relation to said blades, and increased by a minimum buffer distance of said trolley against said lip.
3. The trolley as claimed in claim 2 , wherein an arrangement of said platform, the at least one post and said base is configured to project a center of gravity of an assembly formed by said platform and an operator moving around on said platform onto a ground inside a polygon defined by support points of said base on the ground.
4. The trolley as claimed in claim 1 , further comprising a height-adjustable support cradle for supporting said air intake.
5. The trolley as claimed in claim 4 , wherein said cradle comprises one rear support point and two lateral support points situated at ends of two symmetric arms.
6. The trolley as claimed in claim 5 , wherein said arms are movable between a deployed position and a folded position.
7. The trolley as claimed in claim 1 , further comprising means for rolling said base along a ground.
8. The trolley as claimed in claim 7 , further comprising means for braking said rolling means.
9. The trolley as claimed in claim 1 , further comprising steps to gain access to said platform.
10. The trolley as claimed in claim 1 , further comprising a guard rail at least in a region of said platform.