FR2671850A1 - REINFORCED HOLLOW METAL BEAM. - Google Patents

REINFORCED HOLLOW METAL BEAM. Download PDF

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Publication number
FR2671850A1
FR2671850A1 FR9100825A FR9100825A FR2671850A1 FR 2671850 A1 FR2671850 A1 FR 2671850A1 FR 9100825 A FR9100825 A FR 9100825A FR 9100825 A FR9100825 A FR 9100825A FR 2671850 A1 FR2671850 A1 FR 2671850A1
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France
Prior art keywords
ribs
faces
face
hollow metal
edges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9100825A
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French (fr)
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FR2671850B1 (en
Inventor
Diebolt Jean
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Individual
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Individual
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Publication date
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Priority to FR9100825A priority Critical patent/FR2671850B1/en
Priority to EP92440002A priority patent/EP0495738A1/en
Publication of FR2671850A1 publication Critical patent/FR2671850A1/en
Application granted granted Critical
Publication of FR2671850B1 publication Critical patent/FR2671850B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/38Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0439Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Jib Cranes (AREA)

Abstract

La présente invention concerne une poutre métallique creuse renforcée. Poutre caractérisée en ce qu'elle présente sur au moins une face des nervures parallèles longitudinales (2).The present invention relates to a reinforced hollow metal beam. Beam characterized in that it has longitudinal parallel ribs (2) on at least one face.

Description

Poutre métallique creuse renforcée La présente invention concerne leThe present invention relates to the

domaine de la réalisation de poutres métalliques creuses reconstituées, en particulier de poutres de grande section, utilisables notamment dans le domaine de la manutention et du levage, et a pour objet une poutre métallique creuse renforcée. Actuellement, les poutres métalliques creuses  field of the realization of reconstituted hollow metal beams, in particular of large section beams, used in particular in the field of handling and lifting, and relates to a reinforced hollow metal beam. Currently, hollow metal beams

de grandes dimensions présentent, généralement, une sec-  large dimensions usually have one

tion rectangulaire et sont réalisées par assemblage de plaques de tôle dont l'épaisseur est calculée en fonction  rectangular and are made by assembling sheet metal plates whose thickness is calculated according to

des charges à supporter.loads to bear.

Ainsi, plus particulièrement dans le domaine de  Thus, more particularly in the field of

la manutention et du levage, à savoir dans la construc-  handling and lifting, namely in the construction

tion de grues, les différentes plaques de tôle consti-  cranes, the different sheet metal plates

tuant la section peuvent présenter des épaisseurs diffé-  the section may have different thicknesses

rentes suivant les sollicitations particulières auxquel-  according to the particular demands to which

les lesdites plaques sont soumises.said plates are subject.

En effet, dans le cas d'une grue pour la manu-  Indeed, in the case of a crane for

tention du bois, la plaque formant la partie inférieure d'une poutre constituant le bras est soumise de manière prépondérante à un effort de flexion, de compression et  of wood, the plate forming the lower part of a beam constituting the arm is subjected predominantly to a bending, compression and

de flambage, tandis que la face opposée est plus particu-  while the opposite side is more

lièrement destinée à supporter des efforts de traction,  intended to withstand tensile forces,

les parois latérales assurant l'inertie de la poutre.  the side walls ensuring the inertia of the beam.

En outre, dans un tel cas, la partie inférieure des bras est très souvent exposée à des chocs et, de ce fait, à des risques de détérioration pouvant entraîner une perte des capacités maximales initiales de levage,  In addition, in such a case, the lower part of the arms is very often exposed to shocks and, as a result, to the risk of deterioration which may lead to a loss of the maximum initial lifting capacity,

voire une destruction de la flèche et/ou de la grue.  even a destruction of the boom and / or the crane.

Ainsi, il a été proposé de renforcer les faces correspondantes de la ou des poutres formant le ou les bras en munissant ces faces, généralement intérieurement, d'éléments de raidissage pouvant consister en des plaques de tôle d'épaisseurs différentes rapportées ou en des  Thus, it has been proposed to reinforce the corresponding faces of the beam or beams forming the arm or arms by providing these faces, generally internally, stiffening elements that may consist of sheet metal plates of different thicknesses reported or in

2 bandes longitudinales de renforcement.  2 longitudinal reinforcement strips.

De tels éléments de raidissage rapportés pré-  Such stiffening elements reported previously

sentent, cependant, l'inconvénient d'alourdir la cons-  feel, however, the inconvenience of weighing down the

truction de l'ensemble En outre, ils ne permettent pas, en maintenant les éléments de raidissage ou de renforce- ment dans des dimensions acceptables, de répondre de ma-  In addition, they do not allow, by maintaining stiffening or reinforcing elements in acceptable dimensions, to respond

nière satisfaisante aux problèmes posés par les chocs éventuels.  satisfactorily to the problems posed by possible shocks.

Pour obvier à cet inconvénient il a été proposé d'équiper au moins un bras de la flèche d'un dispositif de butée communément appelé peigne à grumes et destiné à  To obviate this drawback, it has been proposed to equip at least one arm of the boom with an abutment device commonly called a log comb and intended for

amortir les chocs éventuels de la charge contre ledit bras Un tel dispositif est, cependant, également un élé- ment rapporté supplémentaire alourdissant la construction15 de l'ensemble et grevant d'autant le prix de revient de la grue.  to dampen the possible shocks of the load against said arm Such a device is, however, also an additional reported element weighing the construction15 of all and encumbering all the cost of the crane.

La présente invention a pour but de pallier ces inconvénients.  The present invention aims to overcome these disadvantages.

Elle a, en effet, pour objet une poutre métal-  It is, in fact, concerned with a metal beam

lique creuse renforcée caractérisée en ce qu'elle présen- te sur au moins une face des nervures parallèles longitu-  reinforced hollow core characterized in that it presents on at least one side of the longitudinal parallel ribs

dinales. L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réali-  dinales. The invention will be better understood, thanks to the following description, which relates to a mode of realization.

sation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence au dessin schématique annexé, dans lequel: la figure 1 est une vue en coupe d'une poutre conforme à l'invention; la figure 2 est une vue partielle en coupe, à plus grande échelle, représentant une face renforcée, et  preferred embodiment, given by way of non-limiting example, and explained with reference to the appended schematic drawing, in which: Figure 1 is a sectional view of a beam according to the invention; FIG. 2 is a partial view in section, on a larger scale, showing a reinforced face, and

la figure 3 est une vue analogue à celle de la figure 2 d'une variante de réalisation de la face renfor-  FIG. 3 is a view similar to that of FIG. 2 of an alternative embodiment of the reinforcing face;

cée.35 Conformément à l'invention, et comme le montre plus particulièrement, à titre d'exemple, la figure 1 du dessin annexé, la poutre métallique creuse renforcée 1 présente, avantageusement, sur au moins une face, des  In accordance with the invention, and as shown more particularly by way of example, Figure 1 of the accompanying drawing, the reinforced hollow metal beam 1 has, advantageously, on at least one face,

nervures parallèles longitudinales 2.  longitudinal parallel ribs 2.

Selon une caractéristique de l'invention, la face munie des nervures 2 est disposée, de préférence, sur le côté de la poutre soumis aux plus grands efforts  According to one characteristic of the invention, the face provided with the ribs 2 is preferably arranged on the side of the beam subjected to the greatest efforts

de flexion, de compression et de flambage.  bending, compression and buckling.

Comme le montrent les figures 1 à 3, les nervu-  As shown in Figures 1 to 3, the nerves

res 2 peuvent avantageusement être réalisées par pliages  res 2 can advantageously be made by folds

successifs réalisant des sections triangulaires identi-  successive stages of triangular sections identi-

ques ou sous forme d'ondulations sinusoïdales ou encore  in the form of sinusoidal corrugations or

sous forme de cannelures inversées juxtaposées.  in the form of inverted splines juxtaposed.

La prévision de ces nervures 2 permet d'augmen-  The prediction of these ribs 2 makes it possible to increase

ter considérablement l'inertie de la plaque constituant  considerably reduce the inertia of the constituent plate

la face correspondante de la poutre et ainsi sa résistan-  the corresponding face of the beam and thus its resistance

ce aux différentes sollicitations mécaniques En outre,  this with different mechanical stresses In addition,

cette constitution permet également d'améliorer la résis-  this constitution also improves the resistance

tance aux chocs.shock resistance.

Comme le montrent également les figures 2 et 3, la face munie des nervures 2 présente des bords latéraux recourbés qui sont insérés entre les faces latérales 3 de  As also shown in FIGS. 2 and 3, the face provided with the ribs 2 has curved lateral edges which are inserted between the lateral faces 3 of

la poutre 1, leur extrémité étant en saillie parallèle-  the beam 1, their end being projecting parallel-

ment à ces faces 3 (figure 2) ou étant insérée entre les-  to these faces 3 (Figure 2) or being inserted between

dites faces 3 (figure 3).said faces 3 (Figure 3).

Conformément à une autre caractéristique de  According to another characteristic of

l'invention, il est possible, afin d'améliorer la résis-  the invention, it is possible, in order to improve the resistance

tance aux chocs de la face pourvue des nervures 2, de mu-  shock resistance of the face provided with the ribs 2,

nir cette dernière, sur son côté tourné vers l'intérieur de la poutre 1, d'une tôle de renforcement 4 de faible  nir the latter, on its side turned towards the inside of the beam 1, a reinforcing sheet 4 of weak

épaisseur, cette tôle étant soudée sur les bords de ladi- te plaque et éventuellement sur les arêtes correspondan-  thickness, this sheet being welded to the edges of the plate and possibly to the corresponding edges.

tes des nervures Il est ainsi possible de réaliser un cloisonnage de la face comportant les nervures 2, ce qui a pour effet, en cas de chocs sur la partie en saillie35 desdites nervures 2, de répartir plus uniformément l'onde de chocs au moyen de la tôle 4 et, de ce fait, d'empêcher  It is thus possible to partition the face comprising the ribs 2, which has the effect, in the event of shocks on the projecting portion 35 of said ribs 2, of distributing the wave of shocks more uniformly by means of sheet 4 and thereby prevent

une déformation correspondante de ladite face.  a corresponding deformation of said face.

Ce dernier mode de réalisation permet également d'utiliser les espaces 5 délimités entre les nervures 2 et la tôle 4 pour le logement des différentes conduites de fluides et/ou d'énergie, de sorte que ces dernières  This last embodiment also makes it possible to use the spaces 5 delimited between the ribs 2 and the plate 4 for the accommodation of the different fluid and / or energy conduits, so that the latter

sont protégées de manière efficace contre une détériora-  are effectively protected against deterioration

tion éventuelle par chocs.possibly by shocks.

Conformément à une variante de réalisation de l'invention, non représentée au dessin annexé, deux faces  According to an alternative embodiment of the invention, not shown in the accompanying drawings, two faces

opposées de la poutre sont pourvues de nervures longitu-  opposite sides of the beam are provided with longitudinal ribs

dinales parallèles 2 La prévision d'une telle constitu-  Parallel dinales 2 The forecast of such a structure

tion est notamment adaptée à une construction soumise à des contraintes élevées, plus particulièrement à des grues.  The invention is particularly suited to a construction subject to high stresses, more particularly to cranes.

Grâce à l'invention, il est possible de réali-  Thanks to the invention, it is possible to realize

ser des poutres métalliques creuses renforcées permettant  reinforced hollow metal beams allowing

d'obtenir, à poids égal, une meilleure résitance aux sol-  to obtain, at equal weight, better resistance to soil

licitations mécaniques, ce qui est particulièrement im-  mechanical restrictions, which is particularly important

portant dans le domaine de la manutention et du levage.  bearing in the field of handling and lifting.

En outre, une telle poutre est également appli-  In addition, such a beam is also applied

cable dans d'autres domaines mettant en oeuvre des pou-  cable in other areas implementing

tres métalliques soumises à des sollicitations de diver-  very metallic objects subject to various requests for

ses natures, tels que, par exemple, la construction de  its natures, such as, for example, the construction of

véhicules industriels, notamment de châssis pour remor-  industrial vehicles, including chassis for trailers

ques à poutre creuse et/ou télescopique, les bâtiments industriels, les travaux publics et d'autres applications  with hollow and / or telescopic beams, industrial buildings, public works and other

industrielles o des contraintes élevées doivent être ab- sorbées en mettant en oeuvre des poutres d'un poids et d'un encombrement minimum. 30 Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté au dessin anne-  High stresses must be absorbed by using beams of a minimum weight and space requirement. Of course, the invention is not limited to the embodiment described and shown in the drawing

xé Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir35 pour autant du domaine de protection de l'invention.  Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of the invention.

Claims (5)

R E V E N D I C A T I O N SR E V E N D I C A T IO N S 1 Poutre métallique creuse renforcée caracté-  1 Reinforced hollow metal beam characterized risée en ce qu'elle présente sur au moins une face des  in that it has on at least one face nervures parallèles longitudinales ( 2).  longitudinal parallel ribs (2). 2 Poutre, suivant la revendication 1, caracté-  Beam according to claim 1, characterized risée en ce que la face munie des nervures ( 2) est dispo- sée, de préférence, sur le côté de la poutre ( 1) soumis aux plus grands efforts de flexion, de compression et de flambage.  in that the face provided with the ribs (2) is preferably arranged on the side of the beam (1) subjected to the greatest bending, compressing and buckling forces. 3 Poutre, suivant l'une quelconque des reven-  3 Beam, according to any one of the dications 1 et 2, caractérisée en ce que les nervures ( 2) sont avantageusement réalisées par pliages successifs réalisant des sections triangulaires identiques ou sous forme d'ondulations sinusoïdales ou encore sous forme de  1 and 2, characterized in that the ribs (2) are advantageously formed by successive folds producing identical triangular sections or in the form of sinusoidal corrugations or in the form of cannelures inversées juxtaposées.inverted splines juxtaposed. 4 Poutre, suivant l'une quelconque des reven- dications 1 à 3, caractérisée en ce que la face munie des nervures ( 2) présente des bords latéraux recourbés qui sont insérés entre les faces latérales ( 3) de la poutre ( 1), leur extrémité étant en saillie parallèlement à ces  4 Beam according to any one of claims 1 to 3, characterized in that the face provided with the ribs (2) has curved lateral edges which are inserted between the lateral faces (3) of the beam (1), their end projecting parallel to these faces ( 3) ou étant insérée entre lesdites faces ( 3).  faces (3) or being inserted between said faces (3). Poutre, suivant l'une quelconque des reven- dications 1 à 4, caractérisée en ce que la face pourvue des nervures ( 2) est munie, sur son côté tourné vers l'intérieur de la poutre ( 1), d'une tôle de renforcement25 ( 4) de faible épaisseur, cette tôle étant soudée sur les bords de ladite plaque et éventuellement sur les arêtes correspondantes des nervures. 6 Poutre, suivant l'une quelconque des reven- dications 1 et 5, caractérisée en ce que les espaces ( 5) délimités entre les nervures ( 2) et la tôle ( 4) forment le logement de différentes conduites de fluides et/ou d'énergie.  Beam according to any one of claims 1 to 4, characterized in that the face provided with the ribs (2) is provided, on its side facing the inside of the beam (1), with a plate of reinforcement (4) of small thickness, this sheet being welded to the edges of said plate and possibly to the corresponding edges of the ribs. 6 Beam according to any one of claims 1 and 5, characterized in that the spaces (5) delimited between the ribs (2) and the sheet (4) form the housing of different fluid conduits and / or d 'energy. 7 Poutre, suivant l'une quelconque des reven-  7 Beam, according to any one of the dications 1 à 6, caractérisée en ce que deux faces oppo-  1 to 6, characterized in that two opposite faces sées de la poutre sont pourvues de nervures longitudina-  beams are provided with longitudinal ribs les parallèles ( 2).the parallels (2).
FR9100825A 1991-01-18 1991-01-18 REINFORCED HOLLOW METAL BEAM. Expired - Lifetime FR2671850B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9100825A FR2671850B1 (en) 1991-01-18 1991-01-18 REINFORCED HOLLOW METAL BEAM.
EP92440002A EP0495738A1 (en) 1991-01-18 1992-01-16 Reinforced metal telescopic beam element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9100825A FR2671850B1 (en) 1991-01-18 1991-01-18 REINFORCED HOLLOW METAL BEAM.

Publications (2)

Publication Number Publication Date
FR2671850A1 true FR2671850A1 (en) 1992-07-24
FR2671850B1 FR2671850B1 (en) 1993-07-16

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FR9100825A Expired - Lifetime FR2671850B1 (en) 1991-01-18 1991-01-18 REINFORCED HOLLOW METAL BEAM.

Country Status (2)

Country Link
EP (1) EP0495738A1 (en)
FR (1) FR2671850B1 (en)

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GB2362148B (en) * 2000-05-10 2004-03-24 Bamford Excavators Ltd A machine having a working arm
ITUD20010073A1 (en) * 2001-04-19 2002-10-19 Danilo Giannini BEAM FOR SUPPORTS AND RELEVANT REALIZATION PROCEDURE
ES2187290B1 (en) * 2001-10-22 2004-06-16 Ingenieria De Encofrados Y Servicios, S.L. BEAM FOR SUPPORT OF BOARDING BOARDS.
CN104180151A (en) * 2014-08-21 2014-12-03 宋宇光 Special-shaped supporting 6-shaped tube

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125691A (en) * 1933-11-22 1938-08-02 Budd Edward G Mfg Co Sheet metal beam
FR953577A (en) * 1946-10-04 1949-12-08 Degerfors Jarnverks Aktiebolag Improvements in the construction of welded metal beams
US2664179A (en) * 1949-04-27 1953-12-29 Jacob M Gwynne Nailable metal structural member
FR1237928A (en) * 1959-06-26 1960-08-05 Jacketed metal profile and its manufacturing process
FR1373313A (en) * 1963-10-08 1964-09-25 Hedlund Brdr Ab Method of removing buckling deformation of beams
FR2001343A7 (en) * 1968-02-05 1969-09-26 Granges Hedlund
DE2817587A1 (en) * 1977-04-22 1978-11-09 Urzadzen Mech Bumar Labendy Box girder type telescopic cantilever arm - has pressure chord and stem wall ribs and angled edge reinforcing planes
CH650302A5 (en) * 1980-11-25 1985-07-15 Kurt Gassler Set of structural elements for erecting wall and/or floor structures, in particular in exhibition construction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125691A (en) * 1933-11-22 1938-08-02 Budd Edward G Mfg Co Sheet metal beam
FR953577A (en) * 1946-10-04 1949-12-08 Degerfors Jarnverks Aktiebolag Improvements in the construction of welded metal beams
US2664179A (en) * 1949-04-27 1953-12-29 Jacob M Gwynne Nailable metal structural member
FR1237928A (en) * 1959-06-26 1960-08-05 Jacketed metal profile and its manufacturing process
FR1373313A (en) * 1963-10-08 1964-09-25 Hedlund Brdr Ab Method of removing buckling deformation of beams
FR2001343A7 (en) * 1968-02-05 1969-09-26 Granges Hedlund
DE2817587A1 (en) * 1977-04-22 1978-11-09 Urzadzen Mech Bumar Labendy Box girder type telescopic cantilever arm - has pressure chord and stem wall ribs and angled edge reinforcing planes
CH650302A5 (en) * 1980-11-25 1985-07-15 Kurt Gassler Set of structural elements for erecting wall and/or floor structures, in particular in exhibition construction

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Publication number Publication date
FR2671850B1 (en) 1993-07-16
EP0495738A1 (en) 1992-07-22

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