EP0420084B1 - Box-girder for a crane girder - Google Patents

Box-girder for a crane girder Download PDF

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Publication number
EP0420084B1
EP0420084B1 EP90118239A EP90118239A EP0420084B1 EP 0420084 B1 EP0420084 B1 EP 0420084B1 EP 90118239 A EP90118239 A EP 90118239A EP 90118239 A EP90118239 A EP 90118239A EP 0420084 B1 EP0420084 B1 EP 0420084B1
Authority
EP
European Patent Office
Prior art keywords
individual
plates
flange
lower flange
box girder
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.)
Expired - Lifetime
Application number
EP90118239A
Other languages
German (de)
French (fr)
Other versions
EP0420084A1 (en
Inventor
Heinz Scheffer
Dieter Dipl.-Ing. Ungermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scheffer Maschinen- u Apparatebau GmbH
Original Assignee
Scheffer Maschinen- u Apparatebau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP0420084A1 publication Critical patent/EP0420084A1/en
Application granted granted Critical
Publication of EP0420084B1 publication Critical patent/EP0420084B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
    • 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
    • E04C2003/0443—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 substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped

Definitions

  • the invention relates to a box girder according to the preamble of the main claim.
  • a generic box girder is described, for example, in US Pat. No. 3,241,285 and EP 0 293 789 A1.
  • the well-known shape of the box girder achieves a high degree of stability and rigidity as well as torsional security, but the production of these box girders is quite complicated due to the internal welds.
  • the invention has for its object to provide a box girder that is easier to manufacture with equally good stability and torsional rigidity and is therefore cheaper to produce.
  • the web plates are formed from individual plates, one of which runs from the upper chord to the lower chord, while two only run from the upper chord to the continuous single plate or from the lower chord to the continuous single plate. This makes it possible for these three sheets to be welded to one another, the weld seams being on the outside and thus making it easy to "submerged arc welding".
  • the single sheet runs in a straight line diagonally between the upper chord and lower chord and the two subsequent individual sheets can therefore be welded on from the outside after the carrier has been rotated accordingly.
  • the continuous sheet metal is placed in the middle perpendicular to the plane of the upper and lower chord and welding from the outside is also possible here.
  • a single weld seam is provided in the central region, with which the two individual sheets are fixed to the continuous single sheet.
  • the continuous single sheet has a V-shape.
  • the arrangement according to the invention ensures that the appearance of the wearer - as in the case of known carriers - is maintained, but that a more economical production is possible.
  • the arrangement according to the invention has the advantage that the weld seams are better and easier to control.
  • a box girder which has an upper flange 1, a lower flange 2 and web plates 3 and 4 connecting the two belts.
  • these web plates 3 and 4 are designed as concave angular profiles.
  • the web plates 3 and 4 consist of individual plates 5 and 6 as well as 7, 7a and 7b.
  • the single sheet 7 runs from the underside of the upper chord 1 to the inner side of the lower chord 2, diagonally and thus includes an angle ⁇ of less than 90 ° with the upper chord and the lower chord.
  • the two individual plates 6 and 5 are then welded to this diagonally running individual plate 7 and it is readily apparent from the drawing that the welds are on the outside and can therefore be easily manufactured and checked.
  • the individual sheets 5 and 6 also connect at an angle ⁇ to the underside of the upper chord 1 or the inside of the lower chord 2, which is less than 90 °.
  • This configuration creates an X-shaped box girder.
  • the single sheet 7a again runs diagonally between the upper chord 1 and the lower chord 2, and this sheet can also be easily welded onto the upper chord 1 and the lower chord 2 from the outside.
  • the sheet itself is approximately Z-shaped, i.e. it has a central region 8, which runs perpendicular to the plane of the upper chord 1 or the lower chord 2.
  • the ends of the individual plates 6 and 5 adjoin this straight-line central region 8 and these individual plates are again easy to weld from the outside.
  • the single sheet 7b consists of a V-shaped edged profile component which is easily welded from the outside to the underside of the upper chord 1 and the inside of the lower chord 2.
  • the two individual sheets 5 and 6 are welded in the area of the apex 9 of the single sheet 7b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)

Description

Die Erfindung bezieht sich auf einen Kastenträger gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a box girder according to the preamble of the main claim.

Ein gattungsbildender Kastenträger wird beispielsweise in der US-PS 32 41 285 bzw. der EP 0 293 789 Al beschrieben. Bei beiden bekannten Einrichtungen ist es erforderlich, innerhalb des gebildeten Trägers Verstärkungsbleche vorzusehen, die an der Innenseite der konkav gestalteten Stegbleche angeschweißt sind. Durch die bekannte Form des Kastenträgers wird eine hohe Stabilität und Steifigkeit sowie Verwindungssicherheit erreicht, aber die Herstellung dieser Kastenträger ist aufgrund der innenliegenden Schweißnähte recht kompliziert.A generic box girder is described, for example, in US Pat. No. 3,241,285 and EP 0 293 789 A1. In both known devices, it is necessary to provide reinforcement plates within the carrier formed, which are welded to the inside of the concave web plates. The well-known shape of the box girder achieves a high degree of stability and rigidity as well as torsional security, but the production of these box girders is quite complicated due to the internal welds.

Der Erfindung liegt die Aufgabe zugrunde, einen Kastenträger zu schaffen, der bei gleich guter Stabilität und Verwindungssteifigkeit einfacher hergestellt werden kann und damit kostengünstiger zu produzieren ist.The invention has for its object to provide a box girder that is easier to manufacture with equally good stability and torsional rigidity and is therefore cheaper to produce.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen erläutert.This object on which the invention is based is achieved by the teaching of the main claim. Advantageous configurations are explained in the subclaims.

Mit anderen Worten ausgedrückt wird vorgeschlagen, daß die Stegbleche aus Einzelblechen gebildet sind, von denen eines vom Obergurt zum Untergurt durchläuft, während zwei nur vom Obergurt zum durchlaufenden Einzelblech bzw. vom Untergurt zum durchlaufenden Einzelblech verlaufen. Hierdurch ist es möglich, daß diese drei Bleche miteinander verschweißt werden können, wobei die Schweißnähte außen liegen und somit ein leichtes "Unterpulverschweißen" möglich gemacht wird.In other words, it is proposed that the web plates are formed from individual plates, one of which runs from the upper chord to the lower chord, while two only run from the upper chord to the continuous single plate or from the lower chord to the continuous single plate. This makes it possible for these three sheets to be welded to one another, the weld seams being on the outside and thus making it easy to "submerged arc welding".

Bei einer ersten Ausführungsform verläuft das Einzelblech geradlinig diagonal zwischen Obergurt und Untergurt und die beiden anschließenden Einzelbleche können also von außen angeschweißt werden, nachdem der Träger entsprechend gedreht ist.In a first embodiment, the single sheet runs in a straight line diagonally between the upper chord and lower chord and the two subsequent individual sheets can therefore be welded on from the outside after the carrier has been rotated accordingly.

Bei einer abgeänderten Ausführungsform ist das durchlaufende Einzelblech in der Mitte senkrecht zur Ebene des Ober- und Untergurtes gestellt und auch hier ist eine Verschweißung von außen möglich. Schließlich wird gemäß der Erfindung vorgeschlagen, daß nur eine einzige Schweißnaht im mittleren Bereich vorgesehen wird, mit welchem die beiden Einzelbleche an dem durchlaufenden Einzelblech festgelegt werden. Das durchlaufende Einzelblech weist dabei eine V-Form auf.In a modified embodiment, the continuous sheet metal is placed in the middle perpendicular to the plane of the upper and lower chord and welding from the outside is also possible here. Finally, it is proposed according to the invention that only a single weld seam is provided in the central region, with which the two individual sheets are fixed to the continuous single sheet. The continuous single sheet has a V-shape.

Durch die erfindungsgemäße Anordnung wird erreicht, daß zwar das Aussehen des Trägers - so wie bei den bekannten Trägern - beibehalten wird, daß aber eine wirtschaftlichere Herstellung möglich ist. Außerdem hat die erfindungsgemäße Anordnung den Vorteil, daß die Schweißnähte besser und leichter zu kontrollieren sind.The arrangement according to the invention ensures that the appearance of the wearer - as in the case of known carriers - is maintained, but that a more economical production is possible. In addition, the arrangement according to the invention has the advantage that the weld seams are better and easier to control.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen erläutert. Die Zeichnungen zeigen dabei in

Fig. 1
eine erste Ausführungsform eines Kastenträgers, in
Fig. 2
eine zweite abgeänderte Ausführungsform eines Kastenträgers und in
Fig. 3
eine wiederum abgeänderte Ausführungsform.
Embodiments of the invention are explained below with reference to the drawings. The drawings show in
Fig. 1
a first embodiment of a box girder, in
Fig. 2
a second modified embodiment of a box girder and in
Fig. 3
another modified embodiment.

In den Zeichnungen ist jeweils ein Kastenträger dargestellt, der einen Obergurt 1, einen Untergurt 2 und die beiden Gurte verbindende Stegbleche 3 und 4 aufweist. In an sich bekannter Weise sind dabei diese Stegbleche 3 und 4 als konkav gestaltete Winkelprofile ausgebildet.In the drawings, a box girder is shown, which has an upper flange 1, a lower flange 2 and web plates 3 and 4 connecting the two belts. In a manner known per se, these web plates 3 and 4 are designed as concave angular profiles.

Bei allen drei Ausführungsbeispielen bestehen die Stegbleche 3 und 4 aus Einzelblechen 5 und 6 sowie 7, 7a und 7b.In all three exemplary embodiments, the web plates 3 and 4 consist of individual plates 5 and 6 as well as 7, 7a and 7b.

Bei der Ausführungsform gemäß Fig. 1 verläuft das Einzelblech 7 von der Unterseite des Obergurtes 1 zur inneren Seite des Untergurtes 2, und zwar diagonal und schließt somit mit dem Obergurt und dem Untergurt jeweils einen Winkel α kleiner als 90° ein. An dieses diagonal verlaufende Einzelblech 7 sind dann die beiden Einzelbleche 6 und 5 angeschweißt und es ist aus der Zeichnung ohne weiteres erkennbar, daß die Schweißnähte außen liegen und somit leicht hergestellt und kontrolliert werden können.In the embodiment according to FIG. 1, the single sheet 7 runs from the underside of the upper chord 1 to the inner side of the lower chord 2, diagonally and thus includes an angle α of less than 90 ° with the upper chord and the lower chord. The two individual plates 6 and 5 are then welded to this diagonally running individual plate 7 and it is readily apparent from the drawing that the welds are on the outside and can therefore be easily manufactured and checked.

Zur Herstellung der Schweißnähte wird der eigentliche Träger in eine sogenannte Wannenlage gebracht und dann ist ein problemloses "Unterpulverschweißen" möglich.To produce the weld seams, the actual support is placed in a so-called trough position and then problem-free "submerged arc welding" is possible.

Aus den Darstellungen ist darüberhinaus ersichtlich, daß die Einzelbleche 5 und 6 ebenfalls unter einem Winkel β an die Unterseite des Obergurtes 1 bzw. die Innenseite des Untergurtes 2 anschließen, der kleiner als 90° ist.It can also be seen from the illustrations that the individual sheets 5 and 6 also connect at an angle β to the underside of the upper chord 1 or the inside of the lower chord 2, which is less than 90 °.

Durch diese Konfiguration wird ein X-artig im Querschnitt ausgebildeter Kastenträger geschaffen.This configuration creates an X-shaped box girder.

Bei der Ausführungsform gemäß Fig. 2 verläuft das Einzelblech 7a ebenfalls wieder diagonal zwischen Obergurt 1 und Untergurt 2 und auch dieses Blech ist am Obergurt 1 und am Untergurt 2 leicht von außen anzuschweißen. Das Blech selbst ist dabei aber etwa Z-förmig gestaltet, d.h. es weist einen mittleren Bereich 8 auf, der senkrecht zur Ebene des Obergurtes 1 bzw. des Untergurtes 2 verläuft. An diesen geradlinigen mittleren Bereich 8 schließen die Enden der Einzelbleche 6 und 5 an und diese Einzelbleche sind wieder leicht von außen zu verschweißen.In the embodiment according to FIG. 2, the single sheet 7a again runs diagonally between the upper chord 1 and the lower chord 2, and this sheet can also be easily welded onto the upper chord 1 and the lower chord 2 from the outside. However, the sheet itself is approximately Z-shaped, i.e. it has a central region 8, which runs perpendicular to the plane of the upper chord 1 or the lower chord 2. The ends of the individual plates 6 and 5 adjoin this straight-line central region 8 and these individual plates are again easy to weld from the outside.

Bei der Ausführungsform gemäß Fig. 3 besteht das Einzelblech 7b aus einem V-förmig gekanteten Profilbauteil, das von außen leicht an die Unterseite des Obergurtes 1 und die Innenseite des Untergurtes 2 anzuschweißen ist. Die beiden Einzelbleche 5 und 6 sind im Bereich des Scheitels 9 des Einzelbleches 7b angeschweißt.In the embodiment according to FIG. 3, the single sheet 7b consists of a V-shaped edged profile component which is easily welded from the outside to the underside of the upper chord 1 and the inside of the lower chord 2. The two individual sheets 5 and 6 are welded in the area of the apex 9 of the single sheet 7b.

Claims (4)

  1. A box girder comprising an upper flange (1), a lower flange (2) and lateral web plates (3, 4) arranged between the upper and lower flanges (1, 2), said web plates (3, 4) being constructed as concave angle sections, characterized in that the web plates (3, 4) are formed of three individual plates (5, 6; 7, 7a, 7b), one of which individual plates (7, 7a, 7b) runs through in one piece from the upper flange (1) to the lower flange (2) and forms an angle ó of less than 90° with the underside of the upper or lower flange (1, 2), while the other two individual plates (5, 6) each run from the upper or lower flange (1, 2) respectively to the individual plate (7, 7a, 7b) and likewise form an angle β of less than 90° with the underside of the upper or lower flange (1, 2).
  2. A box girder according to claim 1, characterized in that the individual plate (7) runs in a straight line diagonally between upper and lower flanges (1, 2).
  3. A box girder according to claim 1, characterized in that the individual plate (7a) runs diagonally between upper flange and lower flange (1, 2), but comprises a central area (8) which is perpendicular to the plane of the upper flange (1) or the lower flange (2).
  4. A box girder according to claim 1, characterized in that the individual plate (7b) is of V-shaped construction and the two individual plates (5, 6) adjoining the upper or lower flange (1, 2) respectively adjoin the outside of the apex (9) of the individual plate (7b).
EP90118239A 1989-09-25 1990-09-22 Box-girder for a crane girder Expired - Lifetime EP0420084B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3931909A DE3931909A1 (en) 1989-09-25 1989-09-25 CRANE CARRIER TRAINED AS A BOX CARRIER
DE3931909 1989-09-25

Publications (2)

Publication Number Publication Date
EP0420084A1 EP0420084A1 (en) 1991-04-03
EP0420084B1 true EP0420084B1 (en) 1993-08-04

Family

ID=6390121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118239A Expired - Lifetime EP0420084B1 (en) 1989-09-25 1990-09-22 Box-girder for a crane girder

Country Status (2)

Country Link
EP (1) EP0420084B1 (en)
DE (2) DE3931909A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103434930A (en) * 2013-09-01 2013-12-11 谢合清 Welded-railway-type crane main beam

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10333561B4 (en) * 2003-07-23 2006-07-06 Carl Zeiss Industrielle Messtechnik Gmbh The coordinate measuring machine
CN102515021A (en) * 2011-12-06 2012-06-27 王松江 Main girder of single-girder crane
DE102015101756A1 (en) 2015-02-06 2016-08-11 Terex MHPS IP Management GmbH Crane, in particular overhead crane or gantry crane, with at least one crane girder
DE102015101755A1 (en) 2015-02-06 2016-08-11 Terex MHPS IP Management GmbH Crane, in particular overhead crane or gantry crane, with at least one crane girder

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989834A (en) * 1931-11-25 1935-02-05 Charles G Watson Method of reenforcing beams
DE1023210B (en) * 1952-06-25 1958-01-23 Stahlbau Michael Lavis Soehne Welded beam
FR1553017A (en) * 1967-11-17 1969-01-10
DE2205093A1 (en) * 1972-02-03 1973-08-16 Liebherr Werk Ehingen CRANE BOOM
BE886463R (en) * 1980-12-02 1981-04-01 Smits Francois COLD-FORMED METAL PROFILE
GB2145145B (en) * 1983-08-19 1986-09-24 Mabey Hire Co Steel formwork soldier
DE3514786C2 (en) * 1985-04-24 1987-02-19 Mannesmann AG, 4000 Düsseldorf Box girder
DE3723324A1 (en) * 1987-05-29 1988-12-15 Scheffer Masch & App CRANE CARRIER TRAINED AS A BOX CARRIER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103434930A (en) * 2013-09-01 2013-12-11 谢合清 Welded-railway-type crane main beam

Also Published As

Publication number Publication date
DE3931909A1 (en) 1991-04-04
DE59002184D1 (en) 1993-09-09
DE3931909C2 (en) 1993-06-24
EP0420084A1 (en) 1991-04-03

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