• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    maintenance kit for an aircraft engine module. the present invention relates to a maintenance kit for a module (1) which comprises, notably, a trolley (2), a rotating part (5) on the top of the trolley, an apparatus (12) supporting the module and complementary means ( 19) connecting the appliance to the rotating part (5), so that the module (1) can be rotated from a position of vertical origin, observed when it arrives at the assembly workshop in a box to a horizontal position convenient for its connection to another engine module.
    公开号:BR112012011998B1
    申请号:R112012011998-2
    申请日:2010-11-19
    公开日:2020-08-11
    发明作者:Pascal Boulanger；Daniel David；Thomas Julien Roland Earith；Jacques Marchand
    申请人:Snecma；
    IPC主号:
    专利说明:

    [001] The present invention relates to an aircraft engine maintenance kit.
    [002] Aircraft engines are initially manufactured in separate modules, which are then connected together. The manufactured modules are transported to the connection site, then removed from their packaging and moved with precision to their position of approach to the neighboring module. The displacements are essentially ensured by maintenance, even if there are machines, such as cranes to lift the modules and cars to move them.
    [003] This maintenance is long and difficult, since aircraft engine modules are bulky and heavy parts and are fragile. A particular difficulty stems from the fact that, in general, they are connected with their axis of horizontal rotation, while they are often installed with the axis of vertical rotation during box transportation, so that they rest on a flat and flat surface. that transport stability is improved: they must therefore be inverted when they are removed from the box, usually before being placed on the car, but this operation is delicate and therefore requires many precautions. The placement of the module on a car is also delicate, and it is necessary to add to the module the special supports, called “ears”, to allow it to support itself in a stable manner and with a sufficient surface, which would be impossible because of its form of revolution generally conical and irregular. It should be added that it is still necessary to use equipment called "strongback", which connects to the ends of the module, in order to reinforce it, stopping the movements between the rotor and the stator, before it is mounted on the other modules.
    [004] The invention relates to a set of maintenance of an aircraft engine module that avoids the mentioned inconveniences and allows to prepare the assembly of the module in a neighboring module in better working conditions, more quickly and with very reduced manual interventions and requiring less precaution.
    [005] DE-A-34 27 042 describes an aircraft engine maintenance kit in which a mobile car is provided with means for fixing the module and means for adjusting the module's position, without reproducing other characteristics of the invention and notably without fixing by means of a device attached to one end of the module and offering the possibility to fully oscillate the module. Other cars or support devices are the subjects of US-A-1481 503, US-A-1 600 835, US-A-2009/020 934 and US-A-5 863 034.
    [006] In general, the invention relates to a maintenance kit for an aircraft engine module, comprising a mobile car and an apparatus placed at one end of the module, the apparatus comprising a frame and fixing devices on the module , and characterized by the fact that the carriage comprises an upper frame established on a module support chassis and rotating around a horizontal axis, the upper frame and the apparatus comprising complementary devices for securing the module to the car in a position in which a axis in the module crosses the horizontal axis.
    [007] The engine module is thus fixed to the car, by means of the apparatus, which is advantageously a “strongback” adapted for the invention: thus avoiding depositing a module on the car, directly or by means of a “ ear ”, which reduces the risk of damage from shock or excessive contact pressure. And the oscillation of the module, necessary to change from the transport configuration with vertical axis of rotation to the configuration of horizontal axis of rotation, is completed in a simple way by the car, with no effort, nor any particular precaution to avoid collisions or adjust the orientation reached by the module.
    [008] An important element of the set is related to the elevation of the chassis, in order to adjust the height of the module at the moment of connection. This is achieved by means of a device that can be independent of the car and which then comprises a fixed table at the place where the connection could be made. The carriage is provided above the table, which lifts it to the desired height, the remaining module firmly attached to the carriage.
    [009] The connection can be completed by releasing the module from the car and removing it by a crane. The maintenance set can then be completed by a lifting arm that extends from one end to the other of the module, being, for example, fixed to the module at one end and to the apparatus at the other end, and provided with locking means that allow lift it at the module's center of gravity, which is no longer in danger of swinging.
    [0010] The invention will then be described in more detail by means of the figures, among which:
    [0011] - figure 1 represents the module mounted on the car;
    [0012] - figures 2 and 3 represent the module mounted on the car after oscillation;
    [0013] - figure 4 illustrates the module on its arrival at the place of the call, before using the car; and
    [0014] - figure 5 illustrates the module exactly to be installed on the car.
    [0015] The aircraft engine module 1 that appears in this embodiment of the invention is called "core" or high pressure body. It is a larger intermediate module, comprising the compressor and the high pressure turbine, and the combustion chamber. It is mounted, from figures 1 to 3, on a carriage 2, comprising a chassis 3, rollers 4 mounted on the chassis 3 and a frame 5 that rises from the chassis 3 and carries the module 1. The carriage 2 is, however, raised from the ground and carried by a lifting device 6, comprising a frame 7 and above all, arranged on the frame 7, an upper table 8 on which the chassis 3 of the carriage 2 is placed and a mechanism 9 with bars 10 articulated by the medium, arranged between the table 8 and the floor, and which raises that one, when the articulation angle of the bars 10 is modified by a jack 11. Another set element is an apparatus 12 taking the appearance of a cover fixed to the rear of a cover 1: it is at the origin of a “strongback”, known in itself and mainly comprising a frame 13 in plate covering the rear of module 1, in which it is screwed in another way by devices not shown and which allows , at the same time stiffen and protect module 1, and means, n They are represented here in the case, since they are known, carried by the frame 13 to prevent the translation and rotation movements between the rotor and the stator of module 1. But the apparatus 12 is improved in relation to the known strongbacks: it comprises a shoulder 14 upper part in which a lifting arm 15 is attached, of which the other end 16 is fixed in front of the module 1 and which holds in the center a snap ring 18. The attachments of the lifting arm are made by inserting a removable pin 37 through the shoulder 14 and by a peg on a flange 17 in front of the module 1.
    [0016] Other details of the device are complementary means of fixing 19 between the apparatus 12 and the carriage 2 comprising a shoulder 20 that rises on the side of the apparatus 12, a skate 21 at the end of the shoulder 20 and in a square shape, a groove 22, bounded by stripped edges 23, established on a support 26 at the top of the frame 5, a stop 24 at the bottom of the groove 22 and a screw 25 between the skid 21 and the support 26 of the groove 22. The support 26 is provided of a horizontal axis pivot 27, mounted on the frame 5 and driven by a motor 28, allowing the frame 5 to rotate around that axis.
    [0017] The maintenance treatment of module 1, using the device described below is then described. Figure 4 shows the module 1, as it appears at the beginning, contained in a box 29, with its axis of vertical rotation and the rear of the module 1 directed at the top. The first step is to remove a cover 30 from the box 29 and an immobilization frame 31 from the module 1. When this is done, a module 1, always resting on the bottom 32 of the box 30, but released, receives apparatus 12 that it is attached to it, then the appliance 12 is suspended on a crane 33, which fits on the ledge 20 and a handle 34 (shown in figure 2) on the ledge on the opposite side of the appliance 12. The state of figure 5 is obtained. The crane 33 is lifted, activating the appliance 12 and module 1, a appliance with a protective cover can then be placed also in front of module 1 (as opposed to appliance 12), then module 1 is installed on the car 2. The equipment at the front (not shown) is of the type of a known “strongback” equipment, but it can be lighter and installed manually, thanks to the maintenance security provided by the invention, which submits module 1 to less effort. The installation on the carriage 2 is made, in the position of figure 1, by inserting the skid 21 in the groove 22, whose orientation is then vertical, letting down the module 1 until the skid reaches the stop 24, then fixing the screw 25 The next step is a rotation of pivot 27, whose axis crosses that of module 1, in order to achieve the state shown in figure 3, causing module 1 to oscillate, its axis then being horizontal and in front of module 1 protruding on one side of the carriage 2. The lifting arm 15 is installed on top of the connection, the shoulder 14 on which it is mounted and then faces upwards. The carriage 2 is then moved until it reaches above the table 8 of the lifting device 6, then in a low position and housed in the chassis 7; retractable stops 35 per rotation, arranged at the front and rear of chassis 3, are then lowered. A control of the jack 11 raises the table 8 and raises the carriage 2 and module 1. An accidental fall of the carriage 2 is prevented by the stops 35 and the rollers 4, which surround the table 8 on either side. The crane 33 can then resume module 1 by the arm on the lifting arm 15, lifting it from the cart 2, when the connecting means 19 have been disjointed, then move the module 1 until it touches another module 36 of the motor, against which it must be assembled. Ring 18 being placed above the center of gravity of module 1, no oscillation should be feared anymore.
    [0018] Certain of these operations can be completed in a different order: notably the rotation of the module 1, the removal of the crane 33 and the elevation of the table 8. It is necessary to note that, if a fixed and close lifting device 6 has been represented from the module 1 mounting location, this will not be necessary and the lifting device 6 may have been integrated into the carriage 2.
    权利要求:
    Claims (7)
    [0001]
    1. A maintenance set for an aircraft engine module (1), comprising: a mobile car (2) and an apparatus (12) placed at one end of the module, the apparatus comprising a frame and fixing devices on the module, and characterized by the fact that the carriage comprises an upper frame (5) established on a chassis (3), and a pivot to pivot the upper frame in relation to the chassis (3) around a horizontal axis, and in which additional devices are provided in the upper frame (5) and the apparatus (12) to fix the apparatus (12) to the upper frame (5) in a position where the axis of rotation of the module intersects the horizontal axis and can be pivoted from a vertical direction to a horizontal direction.
    [0002]
    2. Maintenance kit for an aircraft engine module, according to claim 1, characterized in that the additional fixing devices comprise a groove (22) limited by unsightly edges (23), in which a skid (21) sliding in the groove (22) and fixed to a shoulder (20) of the apparatus (12) that extends outside the groove with a stop (24) of the skate in the groove and a means of immobilizing (25) the stop skate in the groove.
    [0003]
    3. Maintenance kit for an aircraft engine module, according to claim 1, characterized by the fact that it comprises a lifting device (6) of the chassis (3).
    [0004]
    4. Maintenance kit for an aircraft engine module, according to claim 3, characterized in that the lifting device (6) of the chassis comprises a table (8) independent of the car and on which the car can roll, and immobilization stops (35) existing between the table (8) and the carriage (2).
    [0005]
    5. Maintenance kit for an aircraft engine module, according to claim 1, characterized by the fact that it comprises a lifting arm (15) that can be mounted at one end on the apparatus (12) and at an opposite end ( 16), at a location (17) on the module that is opposite the apparatus.
    [0006]
    6. Maintenance kit for an aircraft engine module, according to claim 1, characterized by the fact that the pivot is driven by an engine.
    [0007]
    7. Maintenance kit for an aircraft engine module, according to claim 2, characterized by the fact that the groove is provided in a support arranged on top of the upper frame, and the pivot is installed in the support
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    CA2781226A1|2011-05-26|
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    FR2952922B1|2012-05-25|
    BR112012011998A2|2016-05-10|
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-08-11| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/11/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    FR0958240A|FR2952922B1|2009-11-20|2009-11-20|HANDLING ASSEMBLY FOR AN AIRCRAFT ENGINE MODULE|
    FR0958240|2009-11-20|
    PCT/EP2010/067858|WO2011061307A1|2009-11-20|2010-11-19|Assembly for handling an aircraft engine|
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