Trolley for supporting at least one part of a landing gear

Abstract

The invention relates to a trolley for supporting at least one part of a landing gear, the trolley comprising: a frame (2) intended to cooperate with a lifting machine, a first platform (11), a second platform (15) mounted so as to be able to move in translation on the first platform along at least one given axis of translation, the first platform and the second platform being shaped so as to limit travel of the second platform relative to the first platform along the axis of translation and along at least one direction of translation along the axis, the second platform being provided with at least one interface for temporarily securing at least part of the landing gear to the trolley in use.

Description

[0001] DESCRIPTION TITLE OF THE INVENTION: Trolley intended to carry at least part of a lander

[0002] The present invention relates to a trolley for carrying at least one part of an aircraft landing gear. The trolley is thus intended to carry said part of the landing gear temporarily.

[0003] The trolley can thus facilitate the installation of said landing gear part on the aircraft and / or facilitate the dismantling of said landing gear part on the aircraft and / or facilitate the handling of said landing gear part on the aircraft.

[0004] BACKGROUND OF THE INVENTION

[0005] In the aeronautical field, it is known to perform maintenance and / or repair operations on one or more landing gears of an aircraft.

[0006] For example, it is generally necessary to replace the bearing seals on the shock absorbers of these landing gears. It is also known to disassemble a moving part of a main shock absorber on an aircraft landing gear in order to take it to the factory to have its seals replaced.

[0007] The moving part is therefore removed from the fixed casing remaining on the aircraft. The part is then loaded onto a pallet, which is itself lifted by a forklift. However, this pallet is generally of rudimentary construction, making the transport of the part between the aircraft and the handling / repair site relatively cumbersome for an operator, and potentially even dangerous. Furthermore, the risk of the part falling from the forklift or the pallet is high.

[0008] SUBJECT OF THE INVENTION

[0009] The invention aims, in particular, to provide a more secure trolley for carrying at least part of a landing gear. SUMMARY OF THE INVENTION

[0010] For this purpose, the invention provides a trolley designed to carry at least part of a lander, the trolley comprising:

[0011] - A frame designed to cooperate with a lifting device,

[0012] - A first platform,

[0013] - A second platform mounted mobile in translation on the first platform along at least one given axis of translation, the first platform and the second platform being configured to limit a stroke of the second platform relative to the first platform along the axis of translation and along at least one direction of translation along said axis, the second platform being provided with at least one interface to temporarily secure in service at least a part of the lander to the trolley.

[0014] The invention allows the landing gear portion to be secured to the trolley for transport to the workshop, thanks to at least one dedicated interface. Furthermore, the relative translation between the second platform and the first platform allows an operator to more easily remove the landing gear portion from the rest of the landing gear remaining on the aircraft.

[0015] The trolley thus makes the assembly, disassembly and transport operations of the relevant part of the lander safer for both the operator and the lander.

[0016] Advantageously, the cart also proves to be easy to use.

[0017] Optionally, the first platform is mounted mobilely on the frame.

[0018] Optionally, the first platform is pivotally mounted on the frame. Optionally, the frame includes at least one sleeve for receiving a forklift tine. Optionally, one of the first or second platforms includes at least one ball bearing carriage, and the other of the second or first platform includes a corresponding rail for sliding the second platform relative to the first platform.

[0019] Optionally, the trolley includes additional means for guiding the rotation of the second platform relative to the first platform.

[0020] Optionally, the interface includes a base fixed to the second platform and a bracket comprising at least one rod intended to be inserted into an eyelet of the lander.

[0021] Optionally, the bracket is mounted to move relative to the base in at least one rotational movement.

[0022] Optionally, the interface includes a collar for inserting a lander axle.

[0023] Optionally, the interface includes at least one protection intended to be arranged between the collar and the axle.

[0024] Other features and advantages of the invention will become apparent from the following description of a particular and non-limiting embodiment of the invention.

[0025] BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Reference will be made to the attached drawings, including:

[0027] [Fig. 1] is a perspective view of a trolley according to a particular embodiment of the invention and in a first direction of use; [Fig. 2] is an exploded view of the trolley shown in figure 1;

[0028] [Fig. 3] is a perspective view of the cart shown in figure 1 carrying a lander;

[0029] [Fig. 4] is a perspective view of the cart shown in figure 1 with a first set of interfaces;

[0030] [Fig. 5] is a perspective view of the cart shown in figure 1 with a second set of interfaces;

[0031] [Fig. 6] is a perspective view of the cart shown in figure 1 in a second direction of use.

[0032] DETAILED DESCRIPTION OF THE INVENTION

[0033] With reference to figures 1 to 4, a trolley 1 according to a particular embodiment of the invention will now be described.

[0034] The trolley 1 includes a frame 2 which is configured to be able to be moved on the ground.

[0035] For this purpose, the frame 2 includes a wheeled base. For example, the base includes a platform 3. The platform 3 extends parallel to a plane comprising a first X-axis and a second Y-axis orthogonal to the first X-axis. The first X-axis and the second Y-axis are horizontal when the trolley 1 rests on a flat, horizontal surface. The platform 3 extends, for example, longitudinally along the first X-axis and laterally along the second Y-axis.

[0036] The base includes at least one cross member 4 extending transversely to the platform 3. Preferably, the base includes at least two cross members 4 extending transversely to the platform 3. The two cross members 4 extend here on either side of the platform 3. The two cross members 4 extend here at two opposite ends of the base. The two cross members 4 extend here parallel to each other and to the second Y-axis. The two cross members 4 are not in contact with the platform 3.

[0037] Frame 2 is also configured to be able to be moved by a lifting device.

[0038] For this purpose, the base includes at least one longitudinal member 5 extending between the two cross members 4. The longitudinal member 5 extends here under the cross members 4. For example, the longitudinal member 5 is fixed to one or both cross members 4. The longitudinal member 5 is fixed, for example, by welding, by bolts and nuts, etc. Optionally, the longitudinal member 5 is longer than the distance separating the two cross members 4. The longitudinal member 5 thus extends beyond at least one, and preferably both, of the cross members 4.

[0039] Optionally, the longitudinal member 5 is in contact with the platform 3 and / or extends under the platform 3. For example, the longitudinal member 5 is fixed to the platform 3 (in addition to or as an alternative to its attachment to one or both of the cross members 4). The longitudinal member 5 is fixed, for example, by welding, by bolts and nuts, etc.

[0040] Thus arranged, the longitudinal member 5 extends longitudinally in the frame 2 in a direction which is parallel to the first axis X.

[0041] Preferably, the longeron 5 is hollow. The longeron 5 is thus shaped into a sheath and for example into a sheath open at at least one and for example at both of its longitudinal ends.

[0042] The longeron 5, for example, is shaped to present a closed cross-section (along a cutting plane normal to the first X-axis). For example, the cross-section has a closed polygonal outer contour, and for example, a closed quadrilateral outer contour, and for example, a closed rectangular outer contour (with optionally rounded corners). For example, the cross-section has a closed inner contour of the same or different shape as the outer contour. For example, the cross-section has a closed polygonal inner contour, and for example, a closed quadrilateral inner contour, and for example, a closed rectangular inner contour (with optionally rounded corners).

[0043] Thus formed, a fork of the lifting machine can be inserted into the sleeve and allow the trolley 1 to be temporarily attached to the lifting machine.

[0044] Furthermore, the frame 2 includes a second side member 5. The second side member 5 is preferably identical to the first side member 5. The preceding description of the first side member 5 is therefore applicable to the second side member 5. The two side members 5 extend parallel to each other. The two side members 5 preferably extend along opposite edges of the platform 3. The two side members 5 are, for example, arranged symmetrically with respect to a central axis parallel to the X-axis, which runs longitudinally through the platform 3. The two side members 5 extend here at two opposite ends of the base 2.

[0045] From then on, the two forks of the lifting machine can be inserted into one of the sleeves respectively, allowing the trolley 1 to be temporarily attached to the lifting machine.

[0046] Optionally, the frame 2 includes one or more means for temporarily attaching the frame 2 to the forks of the lifting equipment. For example, said means include at least one screw 31 mounted in a tapped hole in the frame 2 and, for example, in one of the side members 5. When the forks are arranged in the sleeves, the screw 31 is turned in the tapped hole until its end comes into contact with one of the forks, thus locking the fork against the sleeve. In a particular case, said means include two screws 31 mounted in one of the side members 5 and two other screws 31 mounted in the other side member 5. For example, the two screws 31 extend to opposite longitudinal ends of the associated side member 5.

[0047] Preferably, at least one of the cross members 4 has a wheel 6 at each of its longitudinal ends. Preferably, both cross members 4 have a wheel 6 at each of their longitudinal ends. In this way, the frame 2 is equipped with four wheels 6 allowing the trolley 1 to move easily on the ground.

[0048] Preferably, the frame 2 includes at least one shield 7 associated with at least one of the wheels 6. For example, the shield 7 surrounds the wheel 6. For example, the shield 7 is shaped into an arch.

[0049] The shield 7 is here integral with the frame 1. Optionally, the shield 7 is supported by one of the longitudinal members 5. For example, the shield 7 has two ends, each of its ends being fixed (or even in one piece) with the associated longitudinal member 5.

[0050] In this way, the shield 7 surrounds the wheel 6 laterally. The cooperation of the shield 7 with the side member 5 ensures that the entire periphery of the wheel 6 is framed.

[0051] In this way, we limit the risk of wheel 6 hitting an obstacle.

[0052] Preferably, the frame 2 has as many shields 7 as there are wheels, each shield 7 surrounding one of the wheels 6. Optionally, the various shields 7 are identical to each other. In this way, what has been said above for one of the shields 7 is also applicable to the other shields 7. For example, each longitudinal end of a side member 5 has a shield 7 surrounding the wheel 6 carried by the longitudinal end of the adjacent cross member 4.

[0053] At least one of the cross members 4 and / or at least one of the longitudinal members 5 and / or at least one of the shields 7 and / or at least the platform 3 is made of or based on metal.

[0054] Preferably, the carriage 1 includes at least one operating rod 8. The operating rod 8 has, for example, a first free end 10 shaped into a handle and a second end 9 fixed to the carriage. The second end 9 is, for example, fixed to the frame 2 and is, for example, fixed to one of the cross members 4. The second end 9 is, for example, fixed under one of the cross members 4. Preferably, this fixing is temporary.

[0055] The operating rod 8 includes, for example, a straight section arranged between the first end 10 and the second end 9. The straight section extends, for example, at an angle to the first end 9 and / or the second end 9. The straight section does not extend vertically or horizontally here.

[0056] The operating rod 8 is shaped so that when the wheels 6 are resting on the ground, the second end 9 extends at least 50 centimeters above the ground, and preferably at least 70 centimeters above the ground, and preferably at least 90 centimeters above the ground. The trolley 1 also includes a first platform 11 which is separate from the frame 2.

[0057] The first platform 11 is supported by the frame 2 and, for example, by the platform 3 of the frame 2. The first platform 11 is preferably mounted to move on the frame 2. The first platform 11 is, for example, mounted to move on the frame 2 with a single degree of freedom. For example, the first platform 11 is mounted to rotate on the frame 2. For example, the first platform 11 is mounted to rotate on the frame 2 around a single axis of rotation called the third Z-axis. This third Z-axis is orthogonal to the first X-axis and the second Y-axis. The third Z-axis is therefore vertical when the carriage 1 rests on a flat, horizontal surface.

[0058] The first platform 11 is at least partly made of or based on metal.

[0059] The first platform 11 includes, for example, a plate 12. The plate 12 extends here parallel to the plane containing the first X axis and the second Y axis.

[0060] The first platform 11 and / or the frame 2 are provided with means enabling the first platform 11 to pivot relative to the frame 2. For example, one part of the first platform 11 or the frame 2 has a male portion and the other part of the first platform 11 or the frame 2 has a female portion, the female portion being able to pivot relative to the male portion. For example, said means include a needle bearing 14. The needle bearing 14 is, for example, a needle thrust bearing such as a tapered needle thrust bearing.

[0061] The first platform 11 is, for example, pivotally mounted on the frame 2 by means of its plate 12 and / or by means of the plate 3 of the frame 2. The plate 12 carries, for example, the male or female part, and the plate 3 carries, for example, the female or male part. The male or female part is, for example, centered on the plate 3 and / or on the plate 12. Preferably, the male or female part is arranged under the plate 12, and the corresponding female or male part is arranged on the plate 3.

[0062] Preferably, the carriage 1 includes at least one temporary lock for the relative pivoting between the frame 2 and the first platform 11. The lock includes, for example, a ball pin 13, the pin 13 being inserted into an opening in the carriage 1 to temporarily block the rotation of the first platform 11. The pin 13 is, for example, supported by the first platform 11 and the opening is provided in the frame 2.

[0063] Preferably, the first platform 11 is mounted movable relative to the frame 2 between a first position and a second position. The second position corresponds to a pivoting of a degrees of the first platform 11 with respect to the frame 2 from the first position, a being between 1 and 359 degrees and, for example, between 1 and 270 degrees and, for example, between 1 and 180 degrees and, for example, between 1 and 90 degrees. Preferably, a is equal to 90 degrees.

[0064] The lock is thus configured to block the first platform 11 relative to the frame 2 in its first position and in its second position.

[0065] For an operator, it is therefore easy to manipulate the first platform 11 since he can only lock it in predefined positions determined by the positioning of the orifices that can cooperate with the spindle 13.

[0066] For the present application, unless otherwise stated, the directions of the different axes are understood to be when the first platform 11 is in its first position.

[0067] The trolley 1 also includes a second platform 15 which is separate from the frame 2 and which is separate from the first platform 11.

[0068] The second platform 15 is supported by the first platform 11. The second platform 15 is mounted for movement on the first platform 11, for example, along a single degree of freedom. The second platform 15 is mounted for translational movement on the first platform 11. For example, the second platform 15 is mounted for translational movement on the first platform 11 along a single axis of translation. This axis of translation is parallel to the first X-axis. The axis of translation is therefore horizontal when the carriage 1 rests on a flat, horizontal surface.

[0069] The second platform 15 is at least partly made of or based on metal.

[0070] The second platform 15 includes, for example, a plate 16. The plate 16 extends here parallel to the plane containing the first X axis and the second Y axis.

[0071] The plate 16 is here generally shaped like a T. The plate 16 has, for example, a top bar and a central bar extending from a medial region of the top bar. Optionally, the central bar extends orthogonally to the top bar. The top bar extends, for example, parallel to the second Y-axis. The central bar extends, for example, parallel to the first X-axis.

[0072] The second platform 15 is mounted sliding on the first platform 11 by means of its plate 16 and / or by means of the plate 12 of the first platform 11.

[0073] Apart from this translation, the second platform 15 is fixed to the first platform 11. It is therefore understood that the second platform 15 can pivot relative to the frame 2 around the third axis Z, via the first platform 11.

[0074] The first platform 11 and / or the second platform 15 are provided with means enabling the second platform 15 to slide relative to the first platform 11. For example, one part of the first platform 11 or the second platform 15 has a male portion and the other part of the first platform 11 or the second platform 15 has a female portion, the female portion being able to slide relative to the male portion. For example, said means comprise at least one ball carriage-rail assembly. For example, at least one ball carriage 19 is fixed to the second platform 15 and the rail 18 is fixed to the first platform 11. In the present case, two ball carriages 19 are fixed to the second platform 15.

[0075] The second platform 15 is, for example, slidably mounted on the first platform 11 via its plate 16 and / or via the plate 12 of the first platform 11. The plate 12 of the first platform 11 carries, for example, the male or female part, and the plate 16 of the second platform 15 carries, for example, the female or male part. The male or female part is, for example, arranged on an edge, and for example a lateral edge, of the first platform 11 and / or the second platform 15. Preferably, the male or female part is arranged under the plate 16 of the second platform 15, and the female or male part is arranged on the plate 12 of the first platform 11.

[0076] Preferably, the means enabling the second platform 15 to slide relative to the first platform 11 comprise at least two male / female assemblies as described above. Optionally, the two assemblies are arranged on opposite edges (and for example, opposite lateral edges) of the first platform 11 and / or the second platform 15. For example, a first part of the first assembly and a second part of the second assembly are carried by opposite longitudinal ends of the upper bar so as to be opposite the second parts of the first and second assemblies carried by the first platform 11.

[0077] In the illustrated example, a first rail 18 is arranged on one lateral edge of the plate 12, and a second rail 18 is arranged on the opposite lateral edge of said plate 12. The two rails 18 extend, for example, parallel to each other and to the first axis X. The two rails 18 are, for example, arranged symmetrically with respect to a central axis running longitudinally through the first platform. Correspondingly, two first ball carriages 19 are arranged on one lateral edge of the plate 16 of the second platform 15, and two second rail carriages 19 are arranged on the opposite lateral edge of said plate 16. The ball carriages 19 extend, for example, parallel to each other and to the first axis X. The ball carriages 19 are, for example, arranged symmetrically with respect to a central axis running longitudinally through the plate 16.The pairs of ball carriages 19 are, for example, arranged at opposite ends of the upper bar of the plate 16. Moreover, the two ball carriages 19 of the same pair are arranged at opposite edges of the associated end of the plate 16.

[0078] Furthermore, the first platform 11 and the second platform 15 are shaped to limit the translation of the second platform 15 relative to the first platform 11, for at least one direction of translation, and preferably for both directions of translation.

[0079] For example, one of the first platform 11 or the second platform 15 has a stop against which a portion of the other of the first platform 11 or the second platform 15 rests. Preferably, the first platform 11 and the second platform 15 have at least one first stop / portion assembly to limit the relative sliding between the first platform 11 and the second platform 15 in a first direction of translation and have at least one second stop / portion assembly to limit the relative sliding between the first platform 11 and the second platform 15 in a second direction of translation.Preferably, the first platform 11 and the second platform 15 each include at least one pair of two stop / portion assemblies to limit the relative sliding between the first platform 11 and the second platform 15 in the first direction of translation, and at least one pair of two stop / portion assemblies to limit the relative sliding between the first platform 11 and the second platform 15 in the second direction of translation. For example, the two stop / portion assemblies of the first pair are arranged symmetrically with respect to the central axis running longitudinally through the second platform 15, and the two stop / portion assemblies of the second pair are arranged symmetrically with respect to said central axis.

[0080] For example, the stops 20 are supported by the first platform 11, and the portions are zones of the second platform 15. At least one of the stops 20, and preferably all of the stops 20, extends from an upper face of the plate 12 of the first platform 11 to the second platform 15. At least one of the stops 20, and preferably all of the stops 20, extends along the third axis Z. The portions bearing against the stops 20 are zones of the upper bar and / or the central bar.

[0081] Furthermore, the first platform 11 and the second platform 15 are configured to temporarily stop the translation of the second platform 15 relative to the first platform 11 and / or modify the translation speed of the second platform 15 relative to the first platform. To this end, the first platform and / or the second platform includes at least one brake 17 capable of acting on at least one of the male / female part assemblies. In this way, it is possible to lock the relative position between the first platform 11 and the second platform 15 at any intermediate position between the two end positions defined by the stops 20.

[0082] Preferably, the trolley 1 has at least one interface for attaching at least one part of a lander to the trolley 1. Preferably, the trolley 1 has at least two and preferably at least three interfaces for attaching at least one part of a lander to the trolley 1.

[0083] A first interface 21 will now be described. The first interface 21 comprises a base 23 fixed to the second platform 15 and a shaft 24 carried by the base 23. The base 23 is, for example, fixed to the plate 16 of the second platform 15 and, for example, to the upper face of the second platform 15. The base 23 is, for example, fixed to the central bar of said plate 16. The base 23 is, for example, fixed to the longitudinal end of said central bar.

[0084] Preferably, the base 23 is formed into a hinge yoke whose shaft 24 is mounted pivotally relative to the base 23 about an axis of rotation A and preferably only about said axis of rotation A. Said axis A is here parallel to the second axis Y.

[0085] The base 23 is preferably shaped so that the shaft 24 can be locked in position relative to the base 23 temporarily, for example by means of a lock, for example by means of at least one screw / nut assembly pressing against the shaft 24 on one side and the base 23 on the other in order to limit their relative rotation.

[0086] The first interface 21 also includes a stirrup 25 having a base extended by two legs. The base extends, for example, orthogonally to one or both legs.

[0087] The base is shaped to be fixed to the shaft 24 so as to be rotationally fixed to said shaft about the axis of rotation A. Preferably, this fixing is temporary so that the bracket 25 can be detached and replaced with another bracket 25 in case of a change in geometry between landers to be handled. For example, the base has an opening through which the shaft 24 extends, with a fastening assembly (such as a nut or a nut and bolt) securing the whole.

[0088] Optionally, the two legs of the stirrup 25 extend parallel to each other. A through-hole is provided in each leg, the two holes extending coaxially. The two holes thus extend parallel to the axis of rotation A of the shaft 24 (in this case, they extend parallel to the second axis Y).

[0089] The first interface 21 also includes at least one rod 26 inserted into one of the openings in its legs so as to be fixed to the associated leg. Preferably, the rod 26 is fixed to the stirrup 25 (potentially temporarily). The rod 26 preferably extends coaxially to the two openings.

[0090] The second interface 22 and the third interface 22 are identical here. Therefore, the following description of the second interface 22 is also applicable to the third interface 22.

[0091] The second interface 22 includes a clamping collar 27. The collar 27 thus comprises a fixed jaw 28 integral with the second platform 15 and a movable jaw 29 mounted movably on the fixed jaw 28 between an open position in which the movable jaw 29 is away from the fixed jaw 28 and a closed position in which the movable jaw 29 is brought closer to the fixed jaw 28. The movable jaw 29 is, for example, mounted movably on the fixed jaw 28 according to a rotational movement and, for example, according to a single rotational movement. The movable jaw 29 is, for example, mounted pivotally on the fixed jaw 28 about an axis of rotation B which is parallel to the axis of rotation A and / or the second axis Y. Furthermore, when the movable jaw 29 is in the closed position, the two jaws form an opening between them which is closed externally by the two jaws 28, 29. The opening extends here parallel to the articulation axis B and is open on both sides of the collar 27.The opening has a cross-section that is approximately circular in shape.

[0092] Preferably, the collar 27 has a lock allowing the movable jaw 29 to be temporarily fixed to the fixed jaw 28 when the movable jaw 29 is in the closed position.

[0093] Optionally, the fixed jaw 28 draws a wall extending from the plate 16 of the second platform 15 towards the top of the carriage 1. The wall thus extends along the third axis Z. The wall extends, for example, vertically and / or orthogonally to the plate 16 of the second platform 15. The wall is flat at the point where it is joined to said plate 16. However, in its upper part, the wall is recessed to form the lower portion of the opening.

[0094] The collar 27 is, for example, arranged on a lateral edge of the second platform 15. The collar 27 is, for example, arranged on the central bar. The collar 27 is, for example, arranged on a free end of the central bar. The collar 27 is, for example, arranged directly above the ball carriage 19, which is also supported by the second platform 15. It will then be understood that the collar 27 and the ball carriage 19 are separated from each other by the plate 16 of said second platform 15, the collar 27 being supported on the upper part of said plate 16 and the ball carriage 19 on the lower part. Optionally, the length (along the first X-axis) of the ball carriage 19 is equal to the length of the wall and / or the width of the central bar.

[0095] Preferably, the second interface 22 includes at least one guard 30 associated with the collar 27. Said guard 30 is capable of extending through the opening defined by the two jaws 28, 29 when the movable jaw 29 is in the closed position. Said guard is, for example, made of plastic.

[0096] The guard 30 is, for example, shaped into a sleeve. The sleeve here comprises at least one section shaped into a hollow tube. Preferably, the sleeve comprises two successive sections (and, for example, one-piece sections), each section being shaped into a hollow tube, the two tubes being arranged coaxially, one after the other. The section with the larger external diameter preferably bears against an external lateral face of the jaws 28, 29 when the movable jaw 29 is in the closed position. The section with the smaller external diameter passes through the collar 27 without contacting a wall of an external lateral face of the jaws 28, 29. The third interface 22 is preferably arranged opposite the second interface 22. In this case, the two interfaces 22 extend over opposite lateral edges of the second platform 15.For example, the two interfaces 22 extend over the opposite lateral edges of the central bar of the second platform 15.

[0097] The two interfaces 22 are also arranged so that the openings extend coaxially to each other. The openings extend coaxially to each other along an axis C parallel to the axis of rotation B.

[0098] In this way, the second interface 22 and the third interface 22 are, for example, arranged symmetrically with respect to a central axis running longitudinally through the second platform 15 and parallel to the X axis.

[0099] Preferably, the first interface 21 is arranged on said central axis.

[0100] The second interface 22 and the third interface 22 thus extend on either side of the first interface 21 and preferably at an equidistance from the first interface 21.

[0101] In this way, the areas for securing the part of the lander to be handled to the trolley 1 are distributed homogeneously in the trolley 1 as in the lander.

[0102] In service, the trolley 1 is suitable for transporting a part of a lander such as for example the moving part 101 of a shock absorber 100 of a lander. Such a movable part 101 conventionally comprises a piston 103 which is extended at its lower end by an axle 104 extending transversely to the piston 103. The movable part 101 is thus generally shaped into an inverted T, with the axle 104 forming two arms on either side of the piston 103. The area connecting the piston 103 to the axle 104 can therefore be called a "junction" 105. It conventionally comprises two eyelets 106 for the lower attachment of a compass 107, which is also fixed at its upper end to a housing 102 of the shock absorber 100, in which the movable part 101 slides during operation. The two eyelets 106 extend coaxially to each other along an axis D. Preferably, said axis D is parallel to the axis E along which the axle 104 extends longitudinally.The junction 105 here has two flanges 108 at the connection of each of the arms to the junction 105.

[0103] When an operator wishes to dismantle the moving part 101, the aircraft wheels are removed from the corresponding axle 104 and the compass 107 is detached from the moving part 101.

[0104] The operator then inserts a set of guards 30 onto each of the arms of the axle 104. Preferably, the guards 30 are inserted until they come to a stop against one of the flanges 108 of the moving part 101. In this way, it is relatively simple for an operator to know when the guards 30 are in the correct position.

[0105] The operator also raises the trolley 1 to the level of the moving part 101 using a lifting device. To do this, they insert the forks of the lifting device into each of the longitudinal beams 5. It should be noted that the closed sheath shape of the longitudinal beams 5 advantageously limits the risk of the trolley 1 tipping over onto the lifting device. Preferably, the relative movement between the first platform 11 and the frame 2 is then blocked by the locking mechanism 13. Conversely, the translation between the second platform 15 and the first platform 11 is left free.

[0106] The operator can raise the carriage 1 until each arm of the axle 104 rests against one of the fixed jaws 28 (in this case, the recesses in the walls), with the movable jaws 29 in the open position. The possible translation between the second platform 15 and the first platform 11 allows the fixed jaws 28 to be easily positioned opposite the axle 104, even if the axle 104 is inclined relative to a vertical axis while still in place in the casing 102.

[0107] Next, the operator closes the movable jaws 29 in the closed position and locks their closed positions via the collar locks 27.

[0108] It is noted that the jaws 28, 29 are not in direct contact with the moving part 101 but are in direct contact with the guards 30.

[0109] In this way, the moving part 101 is fixed to the carriage 1 while limiting the risk of damage to the axle 104.

[0110] Furthermore, the operator can also secure the movable part 101 to the carriage 1 via the first interface 21. To this end, once the carriage 1 is level with the movable part 101, the bracket 25 externally frames the two eyelets 106. The possible rotation between the bracket 25 and the plate 16 of the second platform 15 (rotation about axis A) makes it easy to position the bracket 25 opposite the eyelets 106 even if the axle 104 is inclined about a vertical axis when it is still in place in the housing 102. The rod 26 connected to the bracket 25 is then inserted into one or both eyelets 106. In the example shown in Figure 3, the rod 26 is common to both legs of the bracket 25 and to both eyelets 106. The rod 26 therefore extends through the two legs of the stirrup 25 and the two eyelets 106.

[0111] In this way, the moving part 101 is fixed to the trolley 1 in three distinct areas approximately equidistant from the leg of the moving part 101. The moving part 101 is thus very well secured to the trolley 1.

[0112] The operator can then detach the moving part 101 from the casing 102 and gradually lower the trolley 1 to the ground using the lifting equipment. Advantageously, the translation of the second platform 15 relative to the first platform 11 naturally allows the trolley 1 to follow the inclination of the casing 102, as long as the moving part 101 is still extended through it, without the operator needing to take this inclination into account. In particular, the operator simply performs a vertical movement with the lifting equipment. This allows for simplified and safe disassembly (as well as assembly) of the moving part 101.

[0113] Once the trolley 1 is on the ground, the operator can reverse the forklift. The operator can then move the trolley 1 using the control rod 8 as shown in Figure 3.

[0114] Thanks to the sliding motion of the second platform 15 relative to the first platform 11, the carriage 1 can adapt to different possible inclinations of the shock absorber 100 (relative to the vertical) when it is mounted on the aircraft. The carriage 1 is thus highly adaptable. Furthermore, it should be noted that the second platform 15 can pivot relative to the base 2 (via the first platform 11) so that the interfaces 21, 22 can be oriented differently relative to a shock absorber 100. This allows the carriage 1 to adapt to different types of landing gear. The trolley 1 can in fact carry both a moving part 101 of a shock absorber 100 of a front landing gear (generally it is then necessary to bring the trolley 1 via the side of said landing gear) and a moving part 101 of a shock absorber 100 of a main landing gear (generally it is then necessary to bring the trolley 1 from the rear of the landing gear).

[0115] Figures 1 to 5 illustrate the carriage 1 when it carries the movable part 101 of a shock absorber 100 of a main landing gear. The relative positioning between the frame 2 and the platforms 11, 15 is such that the axis along which the orifices of the clevis 25 and / or the axis C extend is parallel to the second Y-axis. The first platform 11 is then, for example, in its first position. Figure 6 illustrates the carriage 1 when it carries a front landing gear. The relative positioning between the frame 2 and the platforms 11, 15 is such that the axis along which the orifices of the clevis 25 and / or the axis C extend is parallel to the first X-axis. The first platform 11 is then, for example, in its second position.

[0116] Trolley 1 thus proves to be particularly modular.

[0117] Advantageously, the trolley 1 is also adaptable to different lander geometries. In particular, the trolley 1 includes different sets of guards 30: each guard 30 is suitable for use with either of the collars 27 on the one hand, and with a specific moving part geometry 101 of the shock absorber 100 of the lander on the other. In this way, the remainder of the second interface 22 and the third interface 22 remain identical for two different moving part geometries 101.

[0118] Furthermore, it should be noted that the bracket 25 is temporarily fixed to the shaft 24. Therefore, if necessary, the bracket 25 can be replaced by another bracket 25 with different dimensions and / or shape adapted to those of the new lander. In this way, the remainder of the first interface 21 remains identical for two different geometries of moving parts 101.

[0119] Figures 1 to 4 illustrate the trolley 1 with a first set of guards 30 and a special stirrup 25.

[0120] Figures 5 and 6 illustrate the carriage 1 when it carries a different type of moving part 101. In this case, the axle 104 of the moving part 101 is shorter than the distance between the two collars 27 (unlike what is shown in Figures 1 to 4). The set of protective guards 30 is then shaped to allow the two arms of the axle 104 to be extended so that it can be temporarily attached to the collars 27. Furthermore, in this case, the first interface 21 has two rods 26, each rod 26 being associated with one of the holes in the bracket 25 and with one of the eyelets 106. In this way, not only does the bracket 25 externally frame the eyelets 106, but the two rods 26 are also inserted on either side of the eyelets 106 without, however, meeting. The first interface 21 may optionally include an additional plate 32. A lower compass of the movable part 101.

[0121] It is noted that apart from adaptations of the interfaces, the rest of the carriage 1 remains identical between two different geometries of moving parts 101.

[0122] The trolley 1 thus proves to be particularly modular.

[0123] It is understood that once the maintenance and / or repair operations have been carried out, the operator can again raise the trolley 1 carrying the mobile part 101 via the lifting device before reinserting the mobile part 101 into the box 102. The mobile part 101 is then secured to the box 102 and detached from the interfaces 21, 22 (in the same or different order as was done for the securing).

[0124] Of course, the invention is not limited to the embodiment described but encompasses any variant falling within the scope of the invention as defined by the claims.

[0125] In particular, the means of cooperation between the frame and the first platform for relative movement between the frame and the first platform may differ from what has been indicated. For example, these means may include at least one roller / slide assembly allowing relative rotation between the frame and the first platform. Similarly, the means of cooperation between the first platform and the second platform may differ from what has been indicated. For example, these means may include at least one rack and pinion assembly allowing relative translation between the first platform and the second platform.

[0126] The mobile part can be linked to the trolley via the first interface, the second interface and the third interface in a different direction than that which has been indicated.

[0127] The number of interfaces between the lander and the trolley may differ from what has been indicated.

[0128] The first platform and / or the second platform may be equipped with means for guiding their relative movement (bearing, conveyor ball, etc.). For example, the first platform may include at least one conveyor ball. For example, said conveyor ball may be arranged on the plate of the first platform. For example, said conveyor ball may be arranged under a longitudinal end of the plate of the first platform. For example, said conveyor ball may be arranged under the plate of the second platform, for example, under the central bar of the second platform and, for example, under a free end of said central bar.

[0129] Similarly, the first platform and / or the frame may be equipped with means to guide their relative movement (bearing, conveyor ball, etc.). For example, the frame may include at least one conveyor ball. For example, said conveyor ball may be arranged on one of the frame's cross members. For example, said conveyor ball may be arranged centered (along the first X-axis or the second Y-axis) on one of the frame's cross members. For example, said conveyor ball may be arranged under a longitudinal end of the first platform's plate. Although here the first platform can only move relative to the frame within a specific angular sector, the first platform can move relative to the frame without angular limitation.

[0130] The lock can be configured to secure the first platform relative to the frame in a single position, in two positions (as described above), or in a greater number of positions. The lock can thus be configured to secure the first platform relative to the frame in any relative position.

[0131] The first platform may be one piece with the frame or may be rigidly fixed to the frame without the possibility of moving relative to it.

[0132] The carriage may include one or more links for connecting one or more removable parts of the carriage to the rest of the carriage. For example, the carriage may include at least one link for connecting the rod (intended to be inserted into an eyelet of the landing gear) to the bracket into which it is inserted.

Claims

DEMANDS 1. A trolley intended to carry at least part of a lander, the trolley comprising: - A frame (2) designed to cooperate with a lifting device, - A first platform (11), _ A second platform (15) mounted movably in translation on the first platform along at least one given axis of translation, the first platform and the second platform being configured to limit a stroke of the second platform relative to the first platform along the axis of translation and in at least one direction of translation along said axis, the second platform being provided with at least one interface for temporarily securing in service at least a part of the landing gear to the trolley, in which the first platform (11) is mounted movably in rotation on the frame (20) around a single axis of rotation.

2. Trolley according to any one of the preceding claims, in which the frame (2) comprises at least one sleeve for receiving a fork of a lifting device.

3. Trolley according to any one of the preceding claims, wherein one of the first platform (11) or of the second platform (5) comprises at least one ball carriage (19) and the other of the second platform or of the first platform comprises a corresponding rail (18) for sliding the second platform relative to the first platform.

4. Trolley according to any one of the preceding claims, comprising additional means for guiding the rotation of the second platform (15) relative to the first platform (11).

5. Trolley according to any one of the preceding claims, wherein the interface comprises a base (23) fixed to the second platform (15) and a stirrup (25) comprising at least one rod (26) intended to be inserted into an eyelet of the lander.

6. Trolley according to claim 5, in which the stirrup (25) is mounted movable relative to the base (23) in at least one rotational movement.

7. Trolley according to any one of claims 1 to 6, wherein the interface comprises a collar (27) for inserting an axle of the lander.

8. Trolley according to claim 7, wherein the interface comprises at least one protection (30) intended to be arranged between the collar (27) and the axle.

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