FR2946270A1 - Support for assembling aeronautical equipments to e.g. aeronautical engine, has corrugated sheet whose corrugations are extended from fixing region at carrier structure to another fixing region of aeronautical equipments - Google Patents

Support for assembling aeronautical equipments to e.g. aeronautical engine, has corrugated sheet whose corrugations are extended from fixing region at carrier structure to another fixing region of aeronautical equipments Download PDF

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Publication number
FR2946270A1
FR2946270A1 FR0953822A FR0953822A FR2946270A1 FR 2946270 A1 FR2946270 A1 FR 2946270A1 FR 0953822 A FR0953822 A FR 0953822A FR 0953822 A FR0953822 A FR 0953822A FR 2946270 A1 FR2946270 A1 FR 2946270A1
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FR
France
Prior art keywords
aeronautical
support
equipments
equipment
fixing region
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Application number
FR0953822A
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French (fr)
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FR2946270B1 (en
Inventor
Michel Henri Ziegler
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Safran Aircraft Engines SAS
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SNECMA SAS
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Priority to FR0953822A priority Critical patent/FR2946270B1/en
Publication of FR2946270A1 publication Critical patent/FR2946270A1/en
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Publication of FR2946270B1 publication Critical patent/FR2946270B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/92Making other particular articles other parts for aircraft
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/06Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C1/00Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/40Sound or heat insulation, e.g. using insulation blankets
    • B64C1/403Arrangement of fasteners specially adapted therefor, e.g. of clips
    • B64C1/406Arrangement of fasteners specially adapted therefor, e.g. of clips in combination with supports for lines, e.g. for pipes or cables

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The support (3) has a right angled elbow provided between fixing regions (4, 9), and a corrugated sheet whose corrugations (13) are extended from one of the fixing regions at a carrier structure to another fixing region of aeronautical equipments. Holes (14) are formed in the sheet at the fixing regions for passage of bolts. The fixing regions are parallel to each other and perpendicular to an end portion (6). The fixing regions are crossed by bolt assemblies for fixing the support to the carrier structure. Independent claims are also included for the following: (1) an assembly for assembling aeronautical equipments to a carrier structure by using a support (2) a method for manufacturing a support of aeronautical equipments.

Description

1 SUPPORT D'EQUIPEMENTS EN AERONAUTIQUE EN PLAQUE ONDULEE 1 SUPPORT OF EQUIPMENTS IN AERONAUTICS IN PLATED PLATE

DESCRIPTION Le sujet de cette invention est un support d'équipements en aéronautique en plaque ondulée. DESCRIPTION The subject of this invention is a carrier of aeronautical equipment in corrugated plate.

Les supports d'équipements en aéronautique dont il est question ici s'étendent depuis une région de fixation à une structure porteuse jusqu'à une région de fixation des équipements considérés. La structure porteuse est souvent une machine, et les équipements, des câbles électriques ou des canalisations de fluide alimentant cette machine et s'étendant autour d'elle. La liaison du support à la structure porteuse est normalement faite par des boulonnages et les équipements sont maintenus dans des colliers de serrage, des lyres à branches opposées élastiques ou des moyens similaires, qui sont également assemblés au support par des boulonnages. Un genre courant de supports est formé à partir d'une tôle pliée de manière à présenter un coude ou deux entre les régions, établies à des extrémités opposées, de fixation à la structure porteuse et des équipements. La disposition coudée permet d'éloigner les équipements de la structure porteuse au moyen d'un porte-à-faux latéral. La tôle est pourtant peu résistante aux efforts de flexion produits par le poids des équipements. Elle doit alors être renforcée par des nervures, généralement soudées à la tôle, à ses côtés ou au centre. Le soudage enchérit beaucoup le coût des fabrications des supports, et les nervures doivent être 2 découpées d'après la forme complexe prise par la tôle après son pliage, ce qui a le même effet. L'invention est relative à un support d'équipements ayant la même forme mais améliorée par la suppression des renforts soudés. Conformément à l'invention, le support est désormais composé d'une plaque ondulée dont les ondulations sont orientées de façon à s'étendre de la région de fixation à la structure porteuse à la région de fixation des équipements. Les ondulations procurent la rigidité nécessaire au support à la place des nervures soudées. Deux difficultés ont dû être résolues avant de parvenir à l'invention. Les tôles ondulées existantes sont planes, et il n'existe pas de procédé usuel pour les déformer en leur donnant la forme coudée souvent nécessaire ; et l'assemblage par boulonnage est plus difficile à accomplir sur une surface ondulée que sur une surface plane, puisqu'un serrage suffisant pour résister aux desserrages ultérieurs accidentels risque d'écraser les ondulations. La première de ces difficultés a été résolue par l'emploi de deux pièces de maintien de la tôle ayant des ondulations de pas et de formes correspondant aux ondulations de la tôle, pour réaliser la flexion de la tôle sans tolérer l'aplatissement de ses ondulations aux coudes. Et la seconde difficulté a été résolue en pourvoyant les assemblages boulonnés de rondelles d'appui, placées contre la plaque ondulée du côté opposé à l'élément (la structure porteuse ou l'équipement) sur lequel elle s'appuie. 3 L'invention sera maintenant décrite en liaison aux figures, parmi lesquelles : la figure 1 est une vue générale du support, la figure 2 est une vue de détail de la plaque formant l'essentiel du support, la figure 3 est une vue d'un assemblage boulonné, et les figures 4 et 5 ont des vues de machines de pliage spéciales. Une réalisation de support selon l'invention apparaît à la figure 1. Elle est placée sur une structure porteuse 1 qui est ici une bride d'une machine 2 telle qu'un moteur d'aéronautique. Elle porte la référence 3 et comprend une première portion ou région de fixation 4 à la structure porteuse 1 à une extrémité, une portion intermédiaire 5 et une portion extrême 6. Ces portions sont successives et jointes entre elles par des coudes 7 et 8 à angle droit, la région de fixation 4 et la portion extrême 6 étant parallèles entre elles, et toutes deux perpendiculaires à la portion intermédiaire 5. La longueur de ladite portion intermédiaire 5 et celle de la portion extrême 6 définissent la position des équipements tenus par le support 3 et leur éloignement de la bride de fixation dans deux directions perpendiculaires du support 3. La portion extrême 6 finit sur une région de fixation 9 d'équipements qui porte des colliers de serrage 10 ou d'autres moyens pour retenir les équipements 11. Les régions de fixation 4 et 9 sont traversées par des assemblages boulonnés 12 pour fixer le support 3 à la 4 structure porteuse 1 et les colliers de serrage 10, donc les équipements 11, au support 3. The aeronautical equipment supports in question here extend from a fastening region to a bearing structure to a fastening region of the equipment in question. The supporting structure is often a machine, and equipment, electrical cables or fluid lines supplying this machine and extending around it. The connection of the support to the support structure is normally made by bolting and the equipment is held in clamps, lyres with opposite elastic branches or similar means, which are also assembled to the support by bolting. A common type of support is formed from a folded sheet so as to have a bend or two between the regions, established at opposite ends, for attachment to the supporting structure and equipment. The bent disposition allows the equipment to be moved away from the supporting structure by means of a lateral overhang. However, the sheet is not very resistant to the bending forces produced by the weight of the equipment. It must then be reinforced by ribs, generally welded to the sheet, at its sides or in the center. Welding greatly increases the cost of manufacture of the supports, and the ribs must be cut according to the complex shape taken by the sheet after its folding, which has the same effect. The invention relates to an equipment support having the same shape but improved by the removal of welded reinforcements. According to the invention, the support is now composed of a corrugated plate whose corrugations are oriented so as to extend from the attachment region to the supporting structure to the attachment region of the equipment. The corrugations provide the necessary rigidity to the support instead of the welded ribs. Two difficulties had to be solved before arriving at the invention. The existing corrugated sheets are planar, and there is no usual method for deforming them by giving them the angled form often necessary; and bolted joining is more difficult to perform on a corrugated surface than on a flat surface, since sufficient clamping to withstand subsequent accidental loosening may crush the corrugations. The first of these difficulties was solved by the use of two sheet metal holding pieces having pitch and shape corrugations corresponding to the undulations of the sheet, to achieve the bending of the sheet without tolerating the flattening of its corrugations. at the elbows. And the second difficulty was solved by providing the bolted connections of support washers, placed against the corrugated plate on the opposite side to the element (the supporting structure or equipment) on which it is based. The invention will now be described with reference to the figures, in which: FIG. 1 is a general view of the support, FIG. 2 is a detailed view of the plate forming the bulk of the support, FIG. bolted joint, and Figures 4 and 5 have views of special folding machines. A support embodiment according to the invention appears in Figure 1. It is placed on a supporting structure 1 which is here a flange of a machine 2 such as an aircraft engine. It bears the reference 3 and comprises a first portion or attachment region 4 to the carrier structure 1 at one end, an intermediate portion 5 and an end portion 6. These portions are successive and joined together by elbows 7 and 8 at an angle right, the fixing region 4 and the end portion 6 being parallel to each other, and both perpendicular to the intermediate portion 5. The length of said intermediate portion 5 and that of the end portion 6 define the position of the equipment held by the support 3 and their removal from the fastening flange in two perpendicular directions of the support 3. The end portion 6 ends on an equipment attachment region 9 which carries clamps 10 or other means for retaining the equipment 11. The fastening regions 4 and 9 are traversed by bolted connections 12 for fixing the support 3 to the support structure 1 and the clamping collars 10, therefore the equipment 11, to the support 3.

Le support 3 a été représenté en isolé à la figure 2. Il s'agit d'une plaque ondulée dont les ondulations 13 s'étendent de la région de fixation 4 à la structure porteuse à la région de fixation 9 des équipements. Des perçages 14 sont opérés dans les régions de fixation 4 et 9 pour le passage des boulons. The support 3 has been shown in isolation in FIG. 2. It is a corrugated plate whose corrugations 13 extend from the attachment region 4 to the support structure to the attachment region 9 of the equipment. Holes 14 are operated in the attachment regions 4 and 9 for the passage of the bolts.

La plaque est nue, c'est-à-dire dépourvue de moyens supplémentaires qui lui sont assemblés. Des assemblages boulonnés 12 sont représentés à la figure 3. Ils traversent chacun un des perçages 14 et un autre perçage 15, en prolongement, opéré à travers la structure porteuse 1 ou une languette 16 du collier de serrage 10 selon le cas. Ils comprennent encore chacun une rondelle 17 en appui sur les ondulations 13 du côté opposé à la structure porteuse 1 ou à la languette 16. Une fois serré, le boulon comprime donc le support 3 autour du perçage 14 entre la rondelle 17 et la structure porteuse 1 ou la languette 16. Cette disposition autorise un serrage satisfaisant et irréversible de l'assemblage boulonné 12 sans écraser les ondulations 13, en répartissant l'effort de serrage sur une plus grande superficie. Il est à noter que l'utilisation de rondelles dans les assemblages boulonnés est normalement évitée dans ce domaine technique à cause de dommages qu'elles pourraient causer si elles tombaient dans la machine 2 après une maladresse de montage, mais le présent montage constitue une exception. The plate is bare, that is to say devoid of additional means that are assembled. Bolted connections 12 are shown in Figure 3. They each pass through one of the bores 14 and another bore 15, in extension, operated through the carrier structure 1 or a tongue 16 of the clamp 10 as appropriate. They each further comprise a washer 17 resting on the corrugations 13 on the opposite side to the supporting structure 1 or the tongue 16. Once tightened, the bolt thus compresses the support 3 around the bore 14 between the washer 17 and the supporting structure 1 or the tongue 16. This arrangement allows a satisfactory and irreversible tightening of the bolted assembly 12 without crushing the corrugations 13, distributing the clamping force over a larger area. It should be noted that the use of washers in the bolted connections is normally avoided in this technical field because of the damage they could cause if they fell into the machine 2 after a clerical assembly, but the present assembly is an exception .

Le support 3 composé d'une plaque ondulée possède la rigidité suffisante pour les applications habituelles, mais il ne peut pas être fabriqué par des procédés usuels. On indique ci-après comment il peut 5 l'être. La figure 4 illustre un outillage dans lequel est pliée une ébauche qui est une tôle ondulée 18 devant former le support 3. La tôle ondulée 18 est placée entre une matrice 19 et un poinçon 20 et estampée de manière à former successivement les coudes 7 et 8, le poinçon 20 pénétrant dans un empreinte 21 de la matrice 19 dont le fond est façonné aux dimensions desdits coudes 7 et 8, en repoussant la tôle ondulée 18. La matrice 19 et le poinçon 20 portent des ondulations 22 complémentaires par les formes et le pas avec les ondulations 13 de la tôle ondulée 18. L'emboîtement des ondulations 13 dans les ondulations 22 complémentaires empêche les déformations et notamment les aplatissements de celle-là pendant le pliage. The support 3 composed of a corrugated plate has sufficient rigidity for the usual applications, but it can not be manufactured by usual methods. Hereinafter is shown how it can be. FIG. 4 illustrates a tool in which is bent a blank which is a corrugated sheet 18 to form the support 3. The corrugated sheet 18 is placed between a die 19 and a punch 20 and stamped so as to successively form the bends 7 and 8 , the punch 20 penetrating into a cavity 21 of the matrix 19 whose bottom is shaped to the dimensions of said elbows 7 and 8, by pushing the corrugated plate 18. The matrix 19 and the punch 20 bear corrugations 22 complementary shapes and the not with the corrugations 13 of the corrugated plate 18. The interlocking of the corrugations 13 in the corrugations 22 complementary prevents deformation and in particular the flattening thereof during folding.

Un autre outillage utilisable est représenté à la figure 5 et concerne l'adaptation de la conception précédente à une plieuse universelle. Une table 23 et un tablier presseur 24 sont serrés l'un contre l'autre pour immobiliser une partie de la tôle ondulée 18, et un tablier plieur 25 vient presser sous la partie libre de la tôle ondulée 18 pour la déplacer en s'élevant autour d'un bec 26 arrondi du tablier presseur 24. La table 23, le tablier presseur 24 et le tablier plieur 25 portent tous des ondulations 22 semblables aux précédentes, avec la même fonction.Another usable tool is shown in Figure 5 and relates to the adaptation of the previous design to a universal folder. A table 23 and a pressure plate 24 are clamped against one another to immobilize a portion of the corrugated sheet 18, and a folding apron 25 squeezes under the free portion of the corrugated sheet 18 to move it upwards. around a rounded beak 26 of the pressing apron 24. The table 23, the pressing apron 24 and the folding apron 25 all have corrugations 22 similar to the previous ones, with the same function.

6 L'invention a été conçue surtout pour les supports coudés, mais la forme du support 3 n'est pas critique et il peut notamment avoir un nombre de coudes différent. The invention has been designed especially for bent supports, but the shape of the support 3 is not critical and it may in particular have a different number of bends.

Claims (4)

REVENDICATIONS1) Support (3) d'équipements en aéronautique, s'étendant depuis une région de fixation (4) à une structure porteuse (1) jusqu'à une région de fixation (9) desdits équipements (11), et comprenant au moins un coude (7, 8) entre lesdites régions de fixation, caractérisé en qu'il est composée d'une plaque ondulée, les ondulations (13) de la plaque s'étendant de ladite région de fixation (4) à la structure porteuse à ladite région de fixation (9) des équipements ; et la plaque est percée (14) aux régions de fixation. CLAIMS1) Support (3) for aeronautical equipment, extending from an attachment region (4) to a carrier structure (1) to a fastening region (9) of said equipment (11), and comprising at least a bend (7, 8) between said attachment regions, characterized in that it is composed of a corrugated plate, the corrugations (13) of the plate extending from said attachment region (4) to the carrier structure to said attachment region (9) of the equipment; and the plate is pierced (14) to the attachment regions. 2) Support d'équipements en aéronautique selon la revendication 1, caractérisé en qu'il comprend deux coudes (7, 8), les régions de fixation étant essentiellement parallèles entre elles et perpendiculaires à une portion (6) la plaque intermédiaire aux coudes. 2) aeronautical equipment carrier according to claim 1, characterized in that it comprises two bends (7, 8), the attachment regions being substantially parallel to each other and perpendicular to a portion (6) the intermediate plate at the elbows. 3) Assemblage d'équipements en aéronautique à une structure porteuse, caractérisé en qu'il emploie un support selon l'une quelconque des revendications 1 ou 2 et en ce que la structure porteuse et les équipements sont fixés au support par des assemblages boulonnés (22) munis de rondelles (17) pressant sur le support à des côtés opposés, respectivement, à la structure porteuse ou aux équipements. 3) assembly of aeronautical equipment to a supporting structure, characterized in that it employs a support according to any one of claims 1 or 2 and in that the supporting structure and the equipment are fixed to the support by bolted connections ( 22) provided with washers (17) pressing on the support at opposite sides, respectively, to the supporting structure or equipment. 4) Procédé de fabrication d'un support selon l'une quelconque des revendications 1 ou 2, caractérisé en qu'il consiste à plier une tôle ondulée (18) par un outillage comportant aux moins deux pièces de maintien (19, 20, 23, 24, 25) de la tôle, lesdites8 pièces ayant des ondulations (22) de pas et de forme correspondant aux ondulations (13) de la tôle. 4) A method of manufacturing a support according to any one of claims 1 or 2, characterized in that it consists in folding a corrugated sheet (18) by a tool comprising at least two holding pieces (19, 20, 23). , 24, 25) of the sheet, said pieces having corrugations (22) of pitch and shape corresponding to the corrugations (13) of the sheet.
FR0953822A 2009-06-09 2009-06-09 SUPPORT OF EQUIPMENTS IN AERONAUTICS IN PLATED PLATE. Active FR2946270B1 (en)

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FR0953822A FR2946270B1 (en) 2009-06-09 2009-06-09 SUPPORT OF EQUIPMENTS IN AERONAUTICS IN PLATED PLATE.

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FR0953822A FR2946270B1 (en) 2009-06-09 2009-06-09 SUPPORT OF EQUIPMENTS IN AERONAUTICS IN PLATED PLATE.

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FR2946270B1 FR2946270B1 (en) 2014-09-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2734315A4 (en) * 2011-07-21 2015-03-18 Sulzer Chemtech Ag A sheet forming tool and a method for the manufacture of a corrugated sheet
US10266273B2 (en) 2013-07-26 2019-04-23 Mra Systems, Llc Aircraft engine pylon

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB110879A (en) * 1917-05-04 1917-11-08 William Harry Watson Improvements in Eave Gutter Brackets and Overstraps.
US2967560A (en) * 1956-06-11 1961-01-10 Republic Steel Corp Machine and process for corner bending corrugated sheet
DE2361016A1 (en) * 1973-12-04 1975-06-05 Johann Cieslik Shaper for corrugated-profile flexible material - has guide channels, meshing gear wheels, and longitudinal and transverse cutters
FR2857401A1 (en) * 2003-07-08 2005-01-14 Ixia Fixation Spacer for anchor tab, has lower and upper walls covering respective faces of extreme branches of anchor tab, such that spacer forms thermal bridge rupture unit between tab and wall and/or door frame

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB110879A (en) * 1917-05-04 1917-11-08 William Harry Watson Improvements in Eave Gutter Brackets and Overstraps.
US2967560A (en) * 1956-06-11 1961-01-10 Republic Steel Corp Machine and process for corner bending corrugated sheet
DE2361016A1 (en) * 1973-12-04 1975-06-05 Johann Cieslik Shaper for corrugated-profile flexible material - has guide channels, meshing gear wheels, and longitudinal and transverse cutters
FR2857401A1 (en) * 2003-07-08 2005-01-14 Ixia Fixation Spacer for anchor tab, has lower and upper walls covering respective faces of extreme branches of anchor tab, such that spacer forms thermal bridge rupture unit between tab and wall and/or door frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2734315A4 (en) * 2011-07-21 2015-03-18 Sulzer Chemtech Ag A sheet forming tool and a method for the manufacture of a corrugated sheet
US9517501B2 (en) 2011-07-21 2016-12-13 Sulzer Chemtech Ag Sheet forming tool and a method for the manufacture of a corrugated sheet
US10266273B2 (en) 2013-07-26 2019-04-23 Mra Systems, Llc Aircraft engine pylon

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