FR2671850A1 - REINFORCED HOLLOW METAL BEAM. - Google Patents
REINFORCED HOLLOW METAL BEAM. Download PDFInfo
- 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
- Authority
- FR
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes 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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; 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
- E02F3/36—Component parts
- E02F3/38—Cantilever 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
- E04C3/07—Joists; 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; 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
- E04C2003/0413—Joists; 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; 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
- E04C2003/043—Joists; 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; 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
- E04C2003/0439—Joists; 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
Landscapes
- 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)
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 |
Family
ID=9409029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (8)
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 |
-
1991
- 1991-01-18 FR FR9100825A patent/FR2671850B1/en not_active Expired - Lifetime
-
1992
- 1992-01-16 EP EP92440002A patent/EP0495738A1/en not_active Ceased
Patent Citations (8)
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 |
Also Published As
Publication number | Publication date |
---|---|
FR2671850B1 (en) | 1993-07-16 |
EP0495738A1 (en) | 1992-07-22 |
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