EP2108071B1 - Laser-welded crane rail for suspended crabs - Google Patents

Laser-welded crane rail for suspended crabs Download PDF

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Publication number
EP2108071B1
EP2108071B1 EP07819693A EP07819693A EP2108071B1 EP 2108071 B1 EP2108071 B1 EP 2108071B1 EP 07819693 A EP07819693 A EP 07819693A EP 07819693 A EP07819693 A EP 07819693A EP 2108071 B1 EP2108071 B1 EP 2108071B1
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EP
European Patent Office
Prior art keywords
crane rail
rail according
stem
chord
crane
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Not-in-force
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EP07819693A
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German (de)
French (fr)
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EP2108071A2 (en
Inventor
Wilfried Hess
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Konecranes PLC
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Konecranes PLC
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Publication of EP2108071A2 publication Critical patent/EP2108071A2/en
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    • 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
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
    • E01B25/24—Supporting rails; Auxiliary balancing rails; Supports or connections for rails

Definitions

  • rails for hanging cats made of profiled rolled sheet steel.
  • An example of such a rail is in the DE 41 19 868 A1 described.
  • the rail forms a hollow lower flange and a hollow upper flange, which are connected by a bridge.
  • the bridge is in one piece with one half of the hollow upper flange and a lower half of the hollow lower flange.
  • the other half of the top chord and the bottom chord are each two single, roll-formed sheet metal parts, which are subsequently matched positionally with the part containing the web. The parts are then welded together.
  • the rail Due to its shape, the rail is also sensitive to bending during transport and it is not very torsionally stiff.
  • the rail according to the invention consists of a single piece of profile-rolled steel strip, which eliminates the handling of multiple parts. After the profile rolling of a single band steel strip, the complete rail is finished bent. No devices are needed to hold any other parts in the correct position together. Also, the handling is easy during the welding process, because no long bend sensitive parts must be joined for the welding process.
  • the profile-rolled steel strip is produced at the end a crane rail with a hollow top chord, a hollow bottom chord and an integrally attached shoulder strap that runs over the middle of the top chord.
  • the new crane rail shows a 15% higher resistance torque than comparable crane rails with the same wall thickness.
  • a thickness of the starting material between 1.5 mm and 4 mm is sufficient for the intended applications completely.
  • the lower flange may have a rectangular profile in cross-section, wherein the height may be between 10 mm and 30 mm.
  • the width of the lower flange can be between 50 mm and 80 mm.
  • the upper belt can be free of welds, which favors both the handling and the subsequent strength.
  • the upper flange may form a rectangular profile in cross-section, the width of which may be between 80 mm and 150 mm and the height between 50 mm and 100 mm.
  • the support belt can be free of welds.
  • the support belt forms a triangular profile.
  • the triangle is an isosceles triangle whose base points upwards.
  • the carrying strap may have a height between 10 mm and 25 mm, measured at the base of the triangle, and a height measured parallel to the height extension of the crane rail between 20 mm and 40 mm.
  • the laser welds are in areas where a small load occurs during later use. It may also be favorable if the web is in any case two-layered in two strip-shaped areas, which adjoin the upper and the lower belt, while it is single-layered in between. This creates space to weld the band steel edges to the continuous portion of the web to create a fluidly bonded portion, even though the stock has two loose, unconnected edges.
  • the width of the strips, in each of which the web is double-layered, can be between 5 mm and 20 mm.
  • the total height of the bridge, measured between the top of the lower girth and the underside of the upper girth, can be between 80 mm and 150 mm.
  • the laser welds that connect the strip edges of the stock material to the continuous area of the web may be continuous laser welds or laser weld seam sections.
  • dumbbell-shaped openings are included, whose longitudinal axis is aligned perpendicular to the longitudinal axis of the running rail.
  • brackets In order to anchor the crane rail according to the invention on the supporting structure, for example the building ceiling, brackets can be used which have two jaws screwed together. The jaws engage the strap and hold it form-fitting.
  • Each jaw may conveniently have a flange which is parallel to the triangular cross-section of the support belt, i. when the clamp is assembled, the support flanges run obliquely toward one another and form a point pointing downwards in the direction of the travel rail.
  • the support flange is connected via a back part with a retaining flange.
  • the two retaining flanges of the jaws are in mounted bracket in a common plane.
  • a bracket For further connection of the clip with the rest of the support structure, a bracket may be used which has a straight back portion, at the ends of two legs are up. With the back part of the bracket is inserted between the support flange and the support belt of the rail and transmits the forces occurring form-fitting of the. Running rail in the structure.
  • FIG. 1 shows in perspective in the position of use a portion of a crane track rail 1.
  • the crane track rail 1 is in particular designed as a running rail for hanging cats, preferably monorail trolleys.
  • the crane rail 1 has a lower flange 2 designed as a hollow-chamber profile, a top flange 3 likewise designed as a hollow-chamber profile, and a support belt 4, which in turn is designed as a hollow-chamber profile.
  • the lower flange 2 is connected to the upper flange 3 via a web 5.
  • the connection between the support belt 4 and the top of the upper flange 3 is effected by means of a web. 6
  • the crane rail 1 consists of a profile-rolled endless strip steel sheet whose band edges can be seen at 7 and 8.
  • the hollow-chamber-shaped lower flange 2 is formed with a lower wall 9, which merges at its edges into side walls 11 and 12.
  • the bottom wall 9 is flat and extends horizontally in use.
  • the two side walls 11 and 12 are bent at right angles from the lower wall 9 upwards.
  • the two side walls 11 and 12 pass into respective flanges 13 and 14, which represents the upper side of the lower flange 2.
  • On the flanges 13 and 14 run the wheels of the hanging cat.
  • Each of the two flanges 13 and 14 has a width approximately equal to half the width of the lower flange 2. At its lying in the middle of the crane rail 1 edge of the flange 13 passes into a strip 15, which forms part of the web 5 and up to the bottom of the upper flange 3 extends.
  • the flange 14 merges into a narrower web strip 16, which ends at the strip edge 7.
  • the web strip 16 lies flat and blunt on the web strip 15.
  • the height of the web strip 16 is a fraction of the height of the web strip 15.
  • the two web strips 15 and 16 define a joint, which is also the plane of symmetry of the crane rail 1 relative to the transverse extent.
  • the web strip 15 merges at its upper end in a flange 17 bent at right angles thereto, which represents one half of the underside of the upper belt 3.
  • the second band edge 8 to which a web strip 18 connects like the web strip 16 flat and dull on the web strip 15 rests.
  • the web strip 18 merges into a flange 19.
  • the flange 19 extends in the extension of the flange 17 to the opposite side, with respect to the vertical plane of symmetry.
  • the two flanges 17 and 19 together form the underside of the upper flange.
  • the flange 17 or the flange 19 merges into side walls 21 and 22, which run parallel to one another and represent the side walls of the upper flange 3.
  • two web strips 25 and 26 close up two flanges 27 and 28, which, as the figure shows, include an angle ⁇ 180 °.
  • the two flanges 27 and 28 form the, to the web 6 point tapering underside of the support belt. 4
  • the two flanges 27 and 28 are finally connected in one piece by a top 29.
  • the top 29 is the top of the support belt. 4
  • the plane of symmetry of the crane rail 1 As already mentioned, the plane of symmetry of the crane rail 1, the right-facing flat side of the web strip 15. With respect to this plane of symmetry, the flanges 13 and 14 collar the same length. Also, the flanges 17 and 19 or 23 and 24 have measured with respect to this plane of symmetry the same width, measured in the transverse direction of the crane rail 1. The two flanges 27 and 28 also with respect to the mentioned plane of symmetry this same extension in the transverse direction of the crane rail. 1
  • the entire crane rail profile 1, as in FIG. 1 is shown, with all, formed thereon surface portions, is in one piece, ie starting from the band edge 7 there is no interruption up to the band edge 8, when moving along the edge of the cross-sectional profile.
  • the two band edges 7 and 8 which are smooth end edges of the starting material, are laser-welded in the inner corner region with the adjacent flat side of the web strip 15.
  • a portion in the laser weld is shown at 31.
  • the laser welds 31, which connect the band edges 7 and 8 with the web strip 15, may be individual weld sections or a continuous weld.
  • the web dumbbell-shaped openings 32 may be included, whose longitudinal axis is aligned transversely to the longitudinal axis of the crane rail 1.
  • the finally obtained rail profile shows a very high load capacity, which is 15% higher than what comparable rails can achieve with the same material thickness.
  • Thickness 1.5 mm..4 mm Height of the lower flange: 10 mm..30 mm Width of the lower flange: 50 mm..80 mm Width of the upper flange: 80 mm.
  • 150 mm Height of upper strap 40 mm..100 mm Height of the carrying strap: 10 mm..25 mm Width of the carrying strap: 20mm..10mm Height of the bridge between the upper and the lower belt: 80 mm. 150 mm Width of stripes 16 and 18: 5 mm..20 mm
  • Fig. 2 shows a further embodiment of the crane runway rail 1 according to the invention
  • Fig. 2 differs from the embodiments according to Fig. 1 essentially in that the two band edges 7 and 8 no longer lie on the web flange 15 but are laid in the region of the upper side 29 of the carrier belt 4.
  • the basic profile is how Fig. 2 can easily recognize the same, only with the difference that the flange 14 is followed by a web flange 33 which extends to the flange 19.
  • the two band edges 7 and 8 lie in the middle of the upper side 29 of the support belt 4 and abut there, as the figure reveals, butts against each other.
  • the two band edges 7 and 8 are on the top 29 by a continuous laser weld 35 connected together.
  • the two web flanges 15 and 33 can be connected to one another directly above the lower belt 2 by way of short laser welds 36 in the form of lines.
  • These bar weld seams 36 are designed with the aid of the laser and act like spot welds, which instead of the laser weld seam 36 connect the two web flanges 15 and 33 in a materially bonded manner.
  • These short welds which are at least burnt through one of the two web flanges 15 and 33, lie transversely to the longitudinal extent of the running rail 1, as this Fig. 2 lets recognize. Due to the welding through the material is melted at the welding edges and connects cohesively with the other flange.
  • FIG. 3 shows a suitable for mounting the crane rail 1 to a supporting structure fitting 40 in an exploded perspective view.
  • To the fitting 40 includes two jaws 41a and 41b, and a support bracket 42.
  • the two jaws 41a and 41b are equal to each other, which is why subsequent only one of the two jaws 41 is described in detail.
  • the jaws 41 are punched and bent sheet metal parts and each jaw 41 forms a clamping flange 43, which merges on its outer side in use in a web 44, which in turn, in turn, a horizontally disposed support flange 45 connects.
  • the angle of the clamping flange 43 is selected so that in use Clamping flange 43 flat against the respective flange 27 and 28 of the support belt 4.
  • each clamping jaw 41 has a profile cross section which is constant over its length.
  • the mounting bracket 42 is composed of a back portion 48 and two legs 49 and 50 together.
  • the legs 49 and 50 project at right angles from the back part 48.
  • the back part 48 contains circular segment-shaped projections 51 and 52 on both sides.
  • a ball joint 56 can be connected to the fitting 40.
  • the ball joint 56 is commercially available and therefore need not be explained in detail.
  • bushes 57 and 58 are provided.
  • the axial securing of the cylinder pin 55 take over splints 59, which lead in the assembled state by corresponding pin holes 61 in the cylinder pin 55.
  • shims 62 and 63 can still be added.
  • the mounting of the fitting 40 on the crane rail 1 is done as follows:
  • the two jaws 41a and 41b are placed with their concave side against the support belt 4. They grip with their clamping flanges 43 under the flanges 27 and 28 of the support belt 4. Between the two jaws 41a and 41b, the support bracket 42 is inserted with the legs 49 and 50 pointing upwards in such a way that the circular segment-shaped extensions 51 and 52 in the cylinder-segment-shaped recesses 46 come to rest. Now 47 screws 67 and 68 are inserted through the holes contained in the web 47 and secured with nuts 69 and 71. In the assembled state, the support flanges 45 lie with their end edges together, so that the tightened screws 67 and 68 can clamp the clamping flanges 63 against the support belt 4.
  • a crane rail is made of a profile-rolled sheet steel strip.
  • the crane rail has a total of a top and a bottom chord, wherein on the top chord additionally a triangular in cross-section support belt is formed.
  • the steel edges are laser-welded on the bridge.

Description

Aus Kosten- und Gewichtsgründen werden Fahrschienen für Hängekatzen aus profilgewalztem Stahlblech hergestellt. Ein Beispiel für eine derartige Fahrschiene ist in der DE 41 19 868 Al beschrieben. Die Schiene bildet einen hohlen Untergurt und einen hohlen Obergurt, die durch einen Steg miteinander verbunden sind. Der Steg ist mit einer Hälfte des hohlen Obergurtes und einer darunter befindlichen Hälfte des hohlen Untergurtes einstückig. Die andere Hälfte des, Obergurtes und des Untergurtes sind jeweils zwei einzelne, profilgewalzte Blechteile, die nachträglich lagegerecht mit dem Teil zusammengefügt werden, das den Steg enthält. Die Teile werden anschließend miteinander verschweißt.For cost and weight reasons, rails for hanging cats made of profiled rolled sheet steel. An example of such a rail is in the DE 41 19 868 A1 described. The rail forms a hollow lower flange and a hollow upper flange, which are connected by a bridge. The bridge is in one piece with one half of the hollow upper flange and a lower half of the hollow lower flange. The other half of the top chord and the bottom chord are each two single, roll-formed sheet metal parts, which are subsequently matched positionally with the part containing the web. The parts are then welded together.

Der Aufwand beim Schweißen ist verhältnismäßig groß, weil durch Vorrichtungen die Teile während des Schweißvorgangs lagerichtig fixiert werden müssen. Außerdem liegen die Schweißnähte an Stellen, an denen die Gefahr des Schweißverzugs nicht auszuschließen ist.The effort in welding is relatively large, because by devices, the parts must be fixed in the correct position during the welding process. In addition, lie the welds in places where the risk of welding distortion can not be excluded.

Insbesondere ist es schwierig, bei dem verhältnismäßig dünnen Material lange, gute MAG-Schweißnähte zu erzeugen.In particular, it is difficult to produce long, good MAG welds in the relatively thin material.

Aufgrund ihrer Gestalt ist auch die Schiene empfindlich gegen Verbiegen während des Transports und sie ist wenig torsionssteif.Due to its shape, the rail is also sensitive to bending during transport and it is not very torsionally stiff.

Ausgehend hiervon ist es Aufgabe der Erfindung, eine Schiene mit verbesserten Eigenschaften zu schaffen, die einfacher herzustellen ist.Based on this, it is an object of the invention to provide a rail with improved properties, which is easier to manufacture.

Die erfindungsgemäße Schiene besteht aus einem einzigen Stück profilgewalzten Bandstahl, womit die Handhabung mehrerer Teile entfällt. Nach dem Profilwalzen eines einzigen Bandstahlstreifens ist die komplette Schiene fertig gebogen. Es werden keine Vorrichtungen benötigt um irgendwelche anderen Teile lagerichtig zusammen zu halten. Auch die Handhabung ist während des Schweißvorgangs einfach, weil keine langen biegeempfindlichen Teile für den Schweißvorgang gefügt werden müssen.The rail according to the invention consists of a single piece of profile-rolled steel strip, which eliminates the handling of multiple parts. After the profile rolling of a single band steel strip, the complete rail is finished bent. No devices are needed to hold any other parts in the correct position together. Also, the handling is easy during the welding process, because no long bend sensitive parts must be joined for the welding process.

Bei der neuen Fahrschiene sind die Bandstahlkanten obendrein lasergeschweißt. Beim Laserschweißen wird insgesamt sehr wenig Wärme eingetragen, was praktisch keinen Schweißverzug auftreten lässt. Darüber hinaus sind lasergeschweißte Nähte hinsichtlich ihres Festigkeitsverhaltens sehr zuverlässig. Laserschweißnähte sind gut reproduzierbar.With the new rail, the steel edges are also laser-welded. Overall, very little heat is introduced during laser welding, which virtually eliminates welding distortion. In addition, laser-welded seams are very reliable in terms of their strength behavior. Laser welds are well reproducible.

Mit dem profilgewalzten Bandstahl entsteht am Schluss eine Kranschiene mit einem hohlen Obergurt, einem hohlen Untergurt und einem einstückig angefügten Traggurt, der über der Mitte des Obergurtes verläuft.The profile-rolled steel strip is produced at the end a crane rail with a hollow top chord, a hollow bottom chord and an integrally attached shoulder strap that runs over the middle of the top chord.

Die neue Kranschiene zeigt ein um 15% höheres Widerstandsmoment als vergleichbare Kranschienen mit derselben Wandstärke.The new crane rail shows a 15% higher resistance torque than comparable crane rails with the same wall thickness.

Eine Dicke des Ausgangsmaterials zwischen 1,5 mm und 4 mm reicht für die vorgesehenen Anwendungen völlig aus.A thickness of the starting material between 1.5 mm and 4 mm is sufficient for the intended applications completely.

Aufgrund der Ausgestaltung des Schienenprofils kann der Untergurt frei von Schweißnähten sein. Der Untergurt kann im Querschnitt ein Rechteckprofil aufweisen, wobei die Höhe zwischen 10 mm und 30 mm betragen kann. Die Breite des Untergurtes kann zwischen 50 mm und 80 mm betragen.Due to the design of the rail profile, the bottom chord can be free of welds. The lower flange may have a rectangular profile in cross-section, wherein the height may be between 10 mm and 30 mm. The width of the lower flange can be between 50 mm and 80 mm.

Bei entsprechendem Profilverlauf kann der Obergurt frei von Schweißnähten sein, was sowohl die Handhabung als auch die spätere Festigkeit begünstigt.With a corresponding profile course, the upper belt can be free of welds, which favors both the handling and the subsequent strength.

Der Obergurt kann im Querschnitt ein Rechteckprofil bilden, wobei dessen Breite zwischen 80 mm und 150 mm und die Höhe zwischen 50 mm und 100 mm liegen kann.The upper flange may form a rectangular profile in cross-section, the width of which may be between 80 mm and 150 mm and the height between 50 mm and 100 mm.

Bei entsprechender Gestaltung des Walzprofils kann der Traggurt frei von Schweißnähten sein.With appropriate design of the rolled section, the support belt can be free of welds.

Es hat sich für Befestigungszwecke als besonders günstig herausgestellt, wenn der Traggurt im Querschnitt gesehen ein Dreieckprofil bildet. Das Dreieck ist ein gleichschenkliges Dreieck, dessen Basis nach oben zeigt.It has been found to be particularly advantageous for fastening purposes, when seen in cross section, the support belt forms a triangular profile. The triangle is an isosceles triangle whose base points upwards.

Der Traggurt kann eine Höhe zwischen 10 mm und 25 mm, gemessen an der Basis des Dreiecks, und eine Höhe gemessen parallel zur Höhenerstreckung der Kranschiene zwischen 20 mm und 40 mm aufweisen.The carrying strap may have a height between 10 mm and 25 mm, measured at the base of the triangle, and a height measured parallel to the height extension of the crane rail between 20 mm and 40 mm.

Bei entsprechender Gestaltung kann der Steg, der den Ober- mit dem Untergurt verbindet weitgehend zweilagig sein. Zweckmäßigerweise liegen die Laserschweißnähte in Bereichen, in denen bei dem späteren Gebrauch eine geringe Belastung auftritt. Es kann auch günstig sein, wenn der Steg jedenfalls in zwei streifenförmigen Bereichen, die an den Ober- und an den Untergurt angrenzen, zweilagig ist, während er dazwischen einlagig ist. Dadurch wird Raum geschaffen, um die Bandstahlkanten mit dem durchgehenden Abschnitt des Stegs zu verschweißen, um ein in sich stoffflüssig verbundenes Teil zu schaffen, obwohl das Ausgangsmaterial zwei lose, nicht miteinander verbundene Kanten aufgewiesen hat.With appropriate design of the web, which connects the upper and the lower chord be largely two-ply. Conveniently, the laser welds are in areas where a small load occurs during later use. It may also be favorable if the web is in any case two-layered in two strip-shaped areas, which adjoin the upper and the lower belt, while it is single-layered in between. This creates space to weld the band steel edges to the continuous portion of the web to create a fluidly bonded portion, even though the stock has two loose, unconnected edges.

Die Breite der Streifen, in denen der Steg jeweils doppellagig ist, kann zwischen 5 mm und 20 mm liegen. Die gesamte Höhe des Stegs, gemessen zwischen der Oberseite des Untergurts und der Unterseite des Obergurts kann zwischen 80 mm und 150 mm liegen.The width of the strips, in each of which the web is double-layered, can be between 5 mm and 20 mm. The total height of the bridge, measured between the top of the lower girth and the underside of the upper girth, can be between 80 mm and 150 mm.

Die Laserschweißnähte, die die Bandkanten des Ausgangsmaterials mit dem durchgehenden Bereich des Stegs verbinden, können durchgehende Laserschweißnähte sein oder Laserschweißnahtabschnitte.The laser welds that connect the strip edges of the stock material to the continuous area of the web may be continuous laser welds or laser weld seam sections.

Zur Befestigung von Zusatzteilen, wie sie für Kranbahnen gelegentlich benötigt werden, kann es von Vorteil sein, wenn im Steg Öffnungen, vorzugsweise hantelförmige Öffnungen enthalten sind, deren Längsachse rechtwinkelig zu der Längsachse der Fahrschiene ausgerichtet ist.For attachment of additional parts, as they are occasionally needed for crane runways, it may be advantageous if in the web openings, preferably dumbbell-shaped openings are included, whose longitudinal axis is aligned perpendicular to the longitudinal axis of the running rail.

Um die erfindungsgemäße Kranschiene an der tragenden Struktur, beispielsweise der Gebäudedecke zu verankern, können Klammern verwendet werden, die zwei miteinander verschraubte Backen aufweisen. Die Backen greifen an dem Traggurt an und halten ihn formschlüssig.In order to anchor the crane rail according to the invention on the supporting structure, for example the building ceiling, brackets can be used which have two jaws screwed together. The jaws engage the strap and hold it form-fitting.

Jede Backe kann zweckmäßigerweise einen Flansch aufweisen, der parallel zu dem dreieckförmigen Querschnitt des Traggurtes verläuft, d.h. bei zusammengesetzter Klammer laufen die Tragflansche schräg aufeinander zu und bilden eine nach unten, in Richtung auf die Fahrschiene zeigende Spitze.Each jaw may conveniently have a flange which is parallel to the triangular cross-section of the support belt, i. when the clamp is assembled, the support flanges run obliquely toward one another and form a point pointing downwards in the direction of the travel rail.

Der Tragflansch ist über ein Rückenteil mit einem Halteflansch verbunden. Die beiden Halteflansche der Backen liegen bei montierter Klammer in einer gemeinsamen Ebene.The support flange is connected via a back part with a retaining flange. The two retaining flanges of the jaws are in mounted bracket in a common plane.

Zur weiteren Verbindung der Klammer mit dem Rest der Tragstruktur kann ein Bügel verwendet werden, der einen geraden Rückenteil aufweist, an dessen Enden zwei Schenkel nach oben stehen. Mit dem Rückenteil wird der Bügel zwischen dem Tragflansch und dem Traggurt der Schiene eingelegt und überträgt formschlüssiger die auftretenden Kräfte von der. Fahrschiene in das Tragwerk.For further connection of the clip with the rest of the support structure, a bracket may be used which has a straight back portion, at the ends of two legs are up. With the back part of the bracket is inserted between the support flange and the support belt of the rail and transmits the forces occurring form-fitting of the. Running rail in the structure.

Im übrigen sind Weiterbildungen der Erfindung Gegenstand von Unteransprüchen.Moreover, further developments of the invention are the subject of dependent claims.

Die nachfolgende Figurenbeschreibung erläutert Aspekte zum Verständnis der Erfindung. Es ist klar, dass eine Reihe von Abwandlungen möglich sind. Weitere, nicht beschriebene Details kann der Fachmann in der gewohnten Weise den Zeichnungen entnehmen, die insoweit die Figurenbeschreibung ergänzen. Die nachfolgenden Zeichnungen sind nicht unbedingt maßstäblich. Zur Veranschaulichung der wesentlichen Details kann es sein, dass bestimmte Bereiche übertrieben groß dargestellt sind. Darüber hinaus sind die Zeichnungen vereinfacht und enthalten nicht jedes, bei der praktischen Ausführung gegebenenfalls vorhandene Detail.

Fig. 1
zeigt einen Abschnitt der erfindungsgemäßen Kranschiene in einer perspektivischen Darstellung mit Blick schräg von oben,
Fig. 2
veranschaulicht ein weiteres Ausführungsbeispiel der erfindungsgemäßen Fahrschieneund
Fig. 3
zeigt den Beschlag zum Verbinden der Kranschienen nach Fig. 1 mit einer tragenden Struktur.
The following description of the figures explains aspects for understanding the invention. It is clear that a number of modifications are possible. Further, not described details, the expert can refer to the drawings in the usual way, the extent to complement the description of the figures. The following drawings are not necessarily to scale. To illustrate the essential details, it may be that certain areas are exaggerated in size. Moreover, the drawings are simplified and do not include every detail that may be present in the practice.
Fig. 1
shows a section of the crane rail according to the invention in a perspective view with a view obliquely from above,
Fig. 2
illustrates another embodiment of the inventive rail and
Fig. 3
shows the fitting for connecting the crane rails Fig. 1 with a load-bearing structure.

Figur 1 zeigt perspektivisch in der Gebrauchsstellung einen Abschnitt einer Kranbahnschiene 1. Die Kranbahnschiene 1 ist insbesondere als Fahrschiene für Hängekatzen, vorzugsweise Einschienenhängekatzen eingerichtet. Die Kranschiene 1 weist einen als Hohlkammerprofil ausgeführten Untergurt 2, einen ebenfalls als Hohlkammerprofil ausgebildeten Obergurt 3 sowie einen wiederum als Hohlkammerprofil ausgeführten Traggurt 4 auf. Der Untergurt 2 ist mit dem Obergurt 3 über einen Steg 5 verbunden. Die Verbindung zwischen dem Traggurt 4 und der Oberseite des Obergurtes 3 erfolgt mit Hilfe eines Stegs 6. FIG. 1 shows in perspective in the position of use a portion of a crane track rail 1. The crane track rail 1 is in particular designed as a running rail for hanging cats, preferably monorail trolleys. The crane rail 1 has a lower flange 2 designed as a hollow-chamber profile, a top flange 3 likewise designed as a hollow-chamber profile, and a support belt 4, which in turn is designed as a hollow-chamber profile. The lower flange 2 is connected to the upper flange 3 via a web 5. The connection between the support belt 4 and the top of the upper flange 3 is effected by means of a web. 6

Die Kranschiene 1 besteht aus einem profilgewalzten endlosen Bandstahlblech, dessen Bandkanten bei 7 und 8 zu erkennen sind.The crane rail 1 consists of a profile-rolled endless strip steel sheet whose band edges can be seen at 7 and 8.

Aufgrund des Profilwalzens entsteht der hohlkammerförmige Untergurt 2 mit einer unteren Wand 9, die an ihren Rändern in Seitenwände 11 und 12 übergeht. Die untere Wand 9 ist eben und verläuft im Gebrauchszustand horizontal. Die beiden Seitenwände 11 und 12 sind von der unteren Wand 9 rechtwinklig nach oben gebogen. An ihren oberen Enden gehen die beiden Seitenwände 11 und 12 jeweils in Flansche 13 und 14 über, die die Oberseite des Untergurtes 2 darstellt. Auf den Flanschen 13 und 14 laufen die Räder der Hängekatze.Due to the profile rolling, the hollow-chamber-shaped lower flange 2 is formed with a lower wall 9, which merges at its edges into side walls 11 and 12. The bottom wall 9 is flat and extends horizontally in use. The two side walls 11 and 12 are bent at right angles from the lower wall 9 upwards. At their upper ends, the two side walls 11 and 12 pass into respective flanges 13 and 14, which represents the upper side of the lower flange 2. On the flanges 13 and 14 run the wheels of the hanging cat.

Jeder der beiden Flansche 13 und 14 hat eine Breite, etwa entsprechend der halben Breite des Untergurtes 2. An seinem in der Mitte der Kranschiene 1 liegenden Kante geht der Flansch 13 in einen Streifen 15 über, der einen Teil des Stegs 5 bildet und bis zu der Unterseite des Obergurtes 3 reicht.Each of the two flanges 13 and 14 has a width approximately equal to half the width of the lower flange 2. At its lying in the middle of the crane rail 1 edge of the flange 13 passes into a strip 15, which forms part of the web 5 and up to the bottom of the upper flange 3 extends.

Der Flansch 14 hingegen geht in einen schmäleren Stegstreifen 16 über, der an der Bandkante 7 endet. Der Stegstreifen 16 liegt flach und stumpf auf dem Stegstreifen 15 auf. Die Höhe des Stegstreifens 16 beträgt einen Bruchteil der Höhe des Stegstreifens 15. Die beiden Stegstreifen 15 und 16 begrenzen eine Fuge, die gleichzeitig die Symmetrieebene der Kranschiene 1 bezogen auf die Quererstreckung ist.On the other hand, the flange 14 merges into a narrower web strip 16, which ends at the strip edge 7. The web strip 16 lies flat and blunt on the web strip 15. The height of the web strip 16 is a fraction of the height of the web strip 15. The two web strips 15 and 16 define a joint, which is also the plane of symmetry of the crane rail 1 relative to the transverse extent.

Der Stegstreifen 15 geht an seinem oberen Ende in einem rechtwinklig dazu abgebogenen Flansch 17 über, der die eine Hälfte der Unterseite des Obergurtes 3 darstellt.The web strip 15 merges at its upper end in a flange 17 bent at right angles thereto, which represents one half of the underside of the upper belt 3.

Auf der selben Seite des Stegstreifens 15, auf der auch der Stegstreifen 16 liegt, befindet sich in der Nähe der Unterseite des Obergurtes 3 die zweite Bandkante 8, an die sich ein Stegstreifen 18 anschließt, der wie der Stegstreifen 16 flach und stumpf auf dem Stegstreifen 15 aufliegt.On the same side of the web strip 15, on which also the web strip 16 is located near the underside of the upper flange 3, the second band edge 8, to which a web strip 18 connects, like the web strip 16 flat and dull on the web strip 15 rests.

An seinem oberen Ende geht der Stegstreifen 18 in einen Flansch 19 über. Der Flansch 19 erstreckt sich in Verlängerung des Flansches 17 zur entgegengesetzten Seite, bezogen auf die vertikale Symmetrieebene. Die beiden Flansche 17 und 19 bilden zusammen die Unterseite des Obergurtes 3.At its upper end, the web strip 18 merges into a flange 19. The flange 19 extends in the extension of the flange 17 to the opposite side, with respect to the vertical plane of symmetry. The two flanges 17 and 19 together form the underside of the upper flange. 3

Der Flansch 17 bzw. der Flansch 19 geht in Seitenwände 21 und 22 über, die zueinander parallel verlaufen und die Seitenwände des Obergurtes 3 darstellen.The flange 17 or the flange 19 merges into side walls 21 and 22, which run parallel to one another and represent the side walls of the upper flange 3.

An die Oberkante der Seitenwände 21 und 22 schließen sich horizontal verlaufende Flansche 23 und 24 an, die in einer gemeinsamen Ebene liegen und die Oberseite des Obergurtes 3 bilden. An ihren aufeinander zu zeigenden Kanten oder Enden gehen die Flansche 23 und 24 in zwei flach aufeinander liegende Stegstreifen 25 und 26 über, die ebenfalls flach und stumpf aufeinander liegen und den oberen Steg 6 bilden.At the upper edge of the side walls 21 and 22 are followed by horizontally extending flanges 23 and 24 which lie in a common plane and form the upper side of the upper flange 3. At their facing edges or ends of the flanges go 23 and 24 in two flat superimposed web strips 25 and 26, which are also flat and dull on each other and form the upper web 6.

An die beiden Stegstreifen 25 und 26 schließen sich nach oben zwei Flansche 27 und 28 an, die, wie die Figur erkennen lässt, einen Winkel <180° einschließen. Die beiden Flansche 27 und 28 bilden die, zu dem Steg 6 hin spitz zulaufender Unterseite des Traggurtes 4.At the two web strips 25 and 26 close up two flanges 27 and 28, which, as the figure shows, include an angle <180 °. The two flanges 27 and 28 form the, to the web 6 point tapering underside of the support belt. 4

An ihrer äußeren Kante sind die beiden Flansche 27 und 28 schließlich durch eine Oberseite 29 einstückig miteinander verbunden. Die Oberseite 29 ist die Oberseite des Traggurtes 4.At its outer edge, the two flanges 27 and 28 are finally connected in one piece by a top 29. The top 29 is the top of the support belt. 4

Wie bereits erwähnt, ist die Symmetrieebene der Kranschiene 1, die nach rechts zeigende Flachseite des Stegstreifens 15. Bezüglich dieser Symmetrieebene kragen die Flansche 13 und 14 gleich weit aus. Auch die Flansche 17 und 19 bzw. 23 und 24 haben gemessen gegenüber dieser Symmetrieebene dieselbe Breite, gemessen in Querrichtung der Kranschiene 1. Die beiden Flansche 27 und 28 haben ebenfalls bezüglich der erwähnten Symmetrieebene diesselbe Erstreckung in Querrichtung der Kranschiene 1.As already mentioned, the plane of symmetry of the crane rail 1, the right-facing flat side of the web strip 15. With respect to this plane of symmetry, the flanges 13 and 14 collar the same length. Also, the flanges 17 and 19 or 23 and 24 have measured with respect to this plane of symmetry the same width, measured in the transverse direction of the crane rail 1. The two flanges 27 and 28 also with respect to the mentioned plane of symmetry this same extension in the transverse direction of the crane rail. 1

Das gesamte Kranschienenprofil 1, wie es in Figur 1 gezeigt ist, mit sämtlichen, daran ausgebildeten Flächenabschnitten, ist einstückig d.h. ausgehend von der Bandkante 7 gibt es bis zu der Bandkante 8 keine Unterbrechung, wenn man längs des Randes des Querschnittsprofils wandert.The entire crane rail profile 1, as in FIG. 1 is shown, with all, formed thereon surface portions, is in one piece, ie starting from the band edge 7 there is no interruption up to the band edge 8, when moving along the edge of the cross-sectional profile.

Um die optimale Festigkeit zu erhalten, sind die beiden Bandkanten 7 und 8, die glatte Stirnkanten des Ausgangsmaterials sind, in dem Inneneckbereich mit der angrenzenden Flachseite des Stegstreifens 15 laserverschweißt. Ein Abschnitt in der Laserschweißnaht ist bei 31 gezeigt. Die Laserschweißnähte 31, die die Bandkanten 7 und 8 mit dem Stegstreifen 15 verbinden, können einzelne Schweißnahtabschnitte oder eine durchgehende Schweißnaht sein.In order to obtain the optimum strength, the two band edges 7 and 8, which are smooth end edges of the starting material, are laser-welded in the inner corner region with the adjacent flat side of the web strip 15. A portion in the laser weld is shown at 31. The laser welds 31, which connect the band edges 7 and 8 with the web strip 15, may be individual weld sections or a continuous weld.

In dem Steg können hantelförmige Öffnungen 32 enthalten sein, deren Längsachse quer zu der Längsachse der Kranschiene 1 ausgerichtet ist.In the web dumbbell-shaped openings 32 may be included, whose longitudinal axis is aligned transversely to the longitudinal axis of the crane rail 1.

Das schlussendlich erhaltene Schienenprofil zeigt eine sehr hohe Belastbarkeit, die 15 % über dem liegt, was vergleichbare Schienen bei der gleichen Materialstärke schaffen.The finally obtained rail profile shows a very high load capacity, which is 15% higher than what comparable rails can achieve with the same material thickness.

Folgende Maßen haben sich als sehr günstig herausgestellt: Materialstärke: 1,5 mm..4 mm Höhe des Untergurtes: 10 mm..30 mm Breite des Untergurtes: 50 mm..80 mm Breite des Obergurtes: 80 mm..150 mm Höhe des Obergurtes: 40 mm..100 mm Höhe des Traggurtes: 10 mm..25 mm Breite des Traggurtes: 20mm..10 mm Höhe des Stegs zwischen dem Ober- und dem Untergurt: 80 mm..150 mm Breite der Streifen 16 und 18: 5 mm..20 mm The following dimensions have proven to be very favorable: Thickness: 1.5 mm..4 mm Height of the lower flange: 10 mm..30 mm Width of the lower flange: 50 mm..80 mm Width of the upper flange: 80 mm. 150 mm Height of upper strap: 40 mm..100 mm Height of the carrying strap: 10 mm..25 mm Width of the carrying strap: 20mm..10mm Height of the bridge between the upper and the lower belt: 80 mm. 150 mm Width of stripes 16 and 18: 5 mm..20 mm

Fig. 2 zeigt ein weiteres Ausführungsbeispiel der erfindungsgemäßen Kranbahnschiene 1. Das Ausführungsbeispiel nach Fig. 2 unterscheidet sich von den Ausführungsbeispielen nach Fig. 1 im Wesentlichen dadurch, dass die beiden Bandkanten 7 und 8 nicht mehr auf dem Stegflansch 15 liegen, sondern in den Bereich der Oberseite 29 des Traggurts 4 verlegt sind. Fig. 2 shows a further embodiment of the crane runway rail 1 according to the invention Fig. 2 differs from the embodiments according to Fig. 1 essentially in that the two band edges 7 and 8 no longer lie on the web flange 15 but are laid in the region of the upper side 29 of the carrier belt 4.

Das Grundprofil ist, wie Fig. 2 unschwer erkennen lässt, dasselbe, lediglich mit dem Unterschied, dass sich an den Flansch 14 ein Stegflansch 33 anschließt, der bis zu dem Flansch 19 reicht. Die beiden Bandkanten 7 und 8 liegen in der Mitte der Oberseite 29 des Traggurtes 4 und stoßen dort, wie die Figur erkennen lässt, stumpf aneinander. Die beiden Bandkanten 7 und 8 sind auf der Oberseite 29 durch eine durchgehende Laserschweißnaht 35 miteinander verbunden.The basic profile is how Fig. 2 can easily recognize the same, only with the difference that the flange 14 is followed by a web flange 33 which extends to the flange 19. The two band edges 7 and 8 lie in the middle of the upper side 29 of the support belt 4 and abut there, as the figure reveals, butts against each other. The two band edges 7 and 8 are on the top 29 by a continuous laser weld 35 connected together.

Um die Festigkeit im Bereich des Untergurtes 2 zu verbessern, können die beiden Stegflansche 15 und 33 unmittelbar oberhalb des Untergurtes 2 durch strichförmige kurze Laserschweißnähte 36 miteinander verbunden sein. Diese Strichschweißnähte 36 sind mit Hilfe des Lasers ausgeführt und wirken wie Punktschweißungen, die anstelle der Laserschweißnaht 36 die beiden Stegflansche 15 und 33 stoffschlüssig miteinander verbinden. Diese kurzen Schweißnähte, die wenigstens durch einen der beiden Stegflansche 15 und 33 hindurch gebrannt sind, liegen quer zur Längserstreckung der Fahrschiene 1, wie dies Fig. 2 erkennen lässt. Aufgrund des Durchschweißens wird das Material an den Schweißkanten aufgeschmolzen und verbindet sich stoffschlüssig mit dem jeweils anderen Flansch.In order to improve the strength in the region of the lower flange 2, the two web flanges 15 and 33 can be connected to one another directly above the lower belt 2 by way of short laser welds 36 in the form of lines. These bar weld seams 36 are designed with the aid of the laser and act like spot welds, which instead of the laser weld seam 36 connect the two web flanges 15 and 33 in a materially bonded manner. These short welds, which are at least burnt through one of the two web flanges 15 and 33, lie transversely to the longitudinal extent of the running rail 1, as this Fig. 2 lets recognize. Due to the welding through the material is melted at the welding edges and connects cohesively with the other flange.

Figur 3 zeigt einen zur Befestigung der Kranschiene 1 an einer tragenden Struktur geeigneten Beschlag 40 in einer perspektivischen Explosionsdarstellung. Zu dem Beschlag 40 gehören zwei Klemmbacken 41a und 41b, sowie ein Tragbügel 42. Die beiden Klemmbacken 41a und 41b sind untereinander gleich, weshalb nachfolgende nur eine der beiden Klemmbacken 41 im Einzelnen beschrieben ist. FIG. 3 shows a suitable for mounting the crane rail 1 to a supporting structure fitting 40 in an exploded perspective view. To the fitting 40 includes two jaws 41a and 41b, and a support bracket 42. The two jaws 41a and 41b are equal to each other, which is why subsequent only one of the two jaws 41 is described in detail.

Die Klemmbacken 41 sind Blechstanz- und -biegeteile und jede Klemmbacke 41 bildet einen Klemmflansch 43, der an seiner im Gebrauch außenliegenden Rückseite in einen Steg 44 übergeht, an dem sich schließlich wiederum ein horizontal liegender Tragflansch 45 anschließt. Der Winkel des Klemmflansches 43 ist so gewählt, dass im Gebrauch der Klemmflansch 43 flach an dem betreffenden Flansch 27 bzw. 28 des Traggurtes 4 anliegt.The jaws 41 are punched and bent sheet metal parts and each jaw 41 forms a clamping flange 43, which merges on its outer side in use in a web 44, which in turn, in turn, a horizontally disposed support flange 45 connects. The angle of the clamping flange 43 is selected so that in use Clamping flange 43 flat against the respective flange 27 and 28 of the support belt 4.

Etwa in der Mitte, bezogen auf ihre Längserstreckung enthält die Klemmbacke eine zylindersegmentförmige Vertiefung 46, die in dem Steg 44 sowie dem schrägen Teil des Klemmflansches 43 ausgebildet ist. Dementsprechend zeigt der Tragflansch 45 an dieser Stelle eine kreissegmentförmige Ausbuchtung nach außen. Abgesehen von dieser Vertiefung 46 weist jeder Klemmbacken 41 ein über seine Länge gesehen konstanten profilquerschnitt auf.Approximately in the middle, based on its longitudinal extent, the jaw includes a cylinder-segment-shaped recess 46, which is formed in the web 44 and the oblique part of the clamping flange 43. Accordingly, the support flange 45 at this point a circular segment-shaped bulge to the outside. Apart from this depression 46, each clamping jaw 41 has a profile cross section which is constant over its length.

Beidseits der Vertiefung 46 sind in dem Steg 44 Bohrungen 47 enthalten.On both sides of the recess 46 44 holes 47 are included in the web.

Der Tragbügel 42 setzt sich aus einem Rückenteil 48 sowie zwei Schenkel 49 und 50 zusammen. Die Schenkel 49 und 50 ragen rechtwinklig von dem Rückenteil 48 auf.The mounting bracket 42 is composed of a back portion 48 and two legs 49 and 50 together. The legs 49 and 50 project at right angles from the back part 48.

Korrespondierend zu den zylindersegmentförmigen Vertiefungen 46 enthält das Rückenteil 48 kreissegmentförmige Vorsprünge 51 und 52 auf beiden Seiten.Corresponding to the cylinder-segment-shaped depressions 46, the back part 48 contains circular segment-shaped projections 51 and 52 on both sides.

Durch die beiden Schenkel 49 und 50 führen miteinander fluchtende Bohrungen 53 und 54, die der Aufnahme eines Zylinderbolzens 55 dienen. Über den Zylinderbolzen 55 kann ein Kugelgelenk 56 mit dem Beschlag 40 verbunden werden. Das Kugelgelenk 56 ist handelsüblich und braucht deswegen nicht im Einzelnen erläutert zu werden.Through the two legs 49 and 50 lead aligned holes 53 and 54, which serve to receive a cylinder pin 55. About the cylinder pin 55, a ball joint 56 can be connected to the fitting 40. The ball joint 56 is commercially available and therefore need not be explained in detail.

Um das Kugelgelenk zwischen den Schenkeln 49 und 50 zu zentrieren sind Distanzbüchsen 57 und 58 vorgesehen. Die axiale Sicherung des Zylinderbolzens 55 übernehmen Splinte 59, die im montierten Zustand durch entsprechende Splintbohrungen 61 in dem Zylinderbolzen 55 führen. Um ein Verhaken der gebogenen Splinte 59 an irgendwelchen Teilen zu vermeiden, können noch Beilagscheiben 62 und 63 beigepackt werden.To center the ball joint between the legs 49 and 50, bushes 57 and 58 are provided. The axial securing of the cylinder pin 55 take over splints 59, which lead in the assembled state by corresponding pin holes 61 in the cylinder pin 55. To avoid catching the bent cotter pins 59 on any parts, shims 62 and 63 can still be added.

Die Montage des Beschlags 40 an der Kranschiene 1 geschieht wie folgt:The mounting of the fitting 40 on the crane rail 1 is done as follows:

Die beiden Klemmbacken 41a und 41b werden mit ihrer konkaven Seite gegen den Traggurt 4 gelegt. Dabei greifen sie mit ihren Klemmflanschen 43 unter die Flansche 27 und 28 des Traggurts 4. Zwischen den beiden Klemmbacken 41a und 41b wird mit den Schenkeln 49 und 50 nach oben zeigend der Tragbügel 42 eingelegt und zwar so, dass die kreissegmentförmigen Fortsätze 51 und 52 in den zylindersegmentförmigen Vertiefungen 46 zu liegen kommen. Nunmehr werden durch die in dem Steg 44 enthaltene Bohrungen 47 Schrauben 67 und 68 durchgesteckt und mit Muttern 69 und 71 gesichert. Im montierten Zustand liegen die Tragflansche 45 mit ihren Stirnkanten aneinander, so dass die angezogenen Schrauben 67 und 68 die Klemmflansche 63 gegen den Traggurt 4 verspannen können.The two jaws 41a and 41b are placed with their concave side against the support belt 4. They grip with their clamping flanges 43 under the flanges 27 and 28 of the support belt 4. Between the two jaws 41a and 41b, the support bracket 42 is inserted with the legs 49 and 50 pointing upwards in such a way that the circular segment-shaped extensions 51 and 52 in the cylinder-segment-shaped recesses 46 come to rest. Now 47 screws 67 and 68 are inserted through the holes contained in the web 47 and secured with nuts 69 and 71. In the assembled state, the support flanges 45 lie with their end edges together, so that the tightened screws 67 and 68 can clamp the clamping flanges 63 against the support belt 4.

Aufgrund des Zusammenwirkens der kreissegmentförmigen Fortsätze 51, 52 mit den zylindersegmentförmigen Vertiefungen 46 wird eine axiale Sicherung des Tragbügels 42 gegen axiale Bewegung relativ zu den beiden Klemmbacken 41a und 41b blockiert. Nachdem die Verbindung insoweit zwischen dem Beschlag 40 und der Kranschiene 1 hergestellt ist, wird der Zylinderbolzen 55 eingesetzt, wobei zwischen den beiden Schenkeln 49 und 50 die beiden Distanzbüchsen 57 und 58 und zwischen ihnen das Kugelgelenk 56 eingesetzt wird. Anschließend werden auf der Außenseite die Beilagscheiben 62 und 63 aufgesteckt und die Splinte 59 in die Bohrungen 61 eingesteckt und umgebogen.Due to the interaction of the circular segment-shaped extensions 51, 52 with the cylinder-segment-shaped recesses 46, an axial securing of the support bracket 42 is blocked against axial movement relative to the two clamping jaws 41a and 41b. After the connection is made in this respect between the fitting 40 and the crane rail 1, the cylinder pin 55 is inserted, wherein between the two legs 49 and 50, the two spacer bushes 57 and 58 and between them the ball joint 56 is inserted. Subsequently Be used on the outside of the washers 62 and 63 plugged and the pins 59 inserted into the holes 61 and bent.

Eine Kranschiene ist aus einem profilgewalzten Stahlblechband hergestellt. Die Kranschiene weist insgesamt einen Ober- und einen Untergurt auf, wobei an dem Obergurt zusätzlich ein im Querschnitt dreieckförmiger Traggurt ausgebildet ist. Die Bandstahlkanten sind auf dem Steg lasergeschweißt. A crane rail is made of a profile-rolled sheet steel strip. The crane rail has a total of a top and a bottom chord, wherein on the top chord additionally a triangular in cross-section support belt is formed. The steel edges are laser-welded on the bridge.

Claims (25)

  1. Crane rail for suspended crabs,
    with a lower chord (2), which is configured as a hollow chamber, which extends over the length of the crane rail (1) with a constant cross-section and which on its upper side (13, 14) forms running surfaces for running wheels of suspended crabs,
    with a first stem (5), which is oriented vertically upwards in the normal position of use and extends centrally from the lower chord (2),
    with an upper chord (3), which is configured as a hollow chamber, which extends over the length of the crane rail (1) with a constant cross-section and which is connected to the lower chord (2) by means of the first stem (5),
    with a second stem (6), which is oriented vertically upwards in the normal position of use and extends centrally from the upper chord (3), characterised in that a support beam (4) is provided, which is configured as a hollow chamber, which extends over the length of the crane rail (1) with a constant cross-section and which is connected to the upper chord (3) by means of the second stem (6),
    wherein the crane rail (1) is produced in one piece from a profile-rolled strip steel sheet, which has two strip edges (7, 8) extending over the length,
  2. Crane rail according to claim 1, characterised in that the strip steel sheet has a thickness of between 1.5 mm and 4 mm.
  3. Crane rail according to claim 1, characterised in that the lower chord (2) is free from welds.
  4. Crane rail according to claim 1, characterised in that in cross-section the lower chord (2) has a rectangular profile.
  5. Crane rail according to claim 1, characterised in that the lower chord (2) has a height of between 10 mm and 30 mm.
  6. Crane rail according to claim 1, characterised in that the lower chord (2) has a width of between 50 mm and 80 mm.
  7. Crane rail according to claim 1, characterised in that the upper chord (3) is free from welds.
  8. Crane rail according to claim 1, characterised in that in cross-section the upper chord (3) has a rectangular profile.
  9. Crane rail according to claim 1, characterised in that the upper chord (3) has a width of between 80 mm and 150 mm.
  10. Crane rail according to claim 1, characterised in that the upper chord (3) has a height of between 40 mm and 100 mm.
  11. Crane rail according to claim 1, characterised in that the support beam (4) is free from welds.
  12. Crane rail according to claim 1, characterised in that in cross-section the support beam (4) has a triangular profile with equal sides (27, 28).
  13. Crane rail according to claim 1, characterised in that the support beam (4) has a height of between 10 mm and 25 mm.
  14. Crane rail according to claim 1, characterised in that the support beam (4) has a width of between 20 mm and 40 mm.
  15. Crane rail according to claim 1, characterised in that the strip edges (7, 8) lie in the upper surface (29) of the support beam (4) and are integrally connected to one another by a weld, preferably a laser weld.
  16. Crane rail according to claim 15, characterised in that the second stem (6) is continuously two-layered.
  17. Crane rail according to claim 16, characterised in that the layers (25, 26) of the second stem (6) merely lie flat on one another.
  18. Crane rail according to claim 16, characterised in that the layers (15, 33) of the first stem (5) are integrally ;connected to one another, preferably by dash-like short laser welds (36).
  19. Crane rail according to claim 1, characterised in that the height of the first stem (5) amounts to between 80 mm and 150 mm.
  20. Crane rail according to claim 1, characterised in that the first stem (5) is plane on one side of the crane rail (I) and that the strip edges (7, 8) of the starting material lie on the other side of the first stem (5).
  21. Crane rail according to claim 1, characterised in that the first stem (5) is two-layered in strip-shaped regions (16, 18), one of which adjoining the upper chord (3) and the other adjoining the lower chord (2), wherein the regions lie flat on one another and are spaced from one another.
  22. Crane rail according to claim 1, characterised in that between the adjacent chord (2, 3) and the strip edge (7, 8) the first stem (5) is only double-layered over a height of between 5 mm and 20 mm.
  23. Crane rail according to claim 1, characterised in that the strip edge (7, 8) is laser-welded on the profile-rolled product in the region of the stem (5) with the other material layer (15).
  24. Crane rail according to claim 1, characterised in that the laser weld (31) is a continuous weld.
  25. Crane rail according to claim 1, characterised in that the first stem (5) contains dumbbell-shaped openings (32), wherein the longitudinal axis of the openings (32) is oriented at right-angles to the longitudinal axis of the crane rail (1).
EP07819693A 2006-11-17 2007-11-08 Laser-welded crane rail for suspended crabs Not-in-force EP2108071B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006054682A DE102006054682A1 (en) 2006-11-17 2006-11-17 Laser welded crane rail for hanging cats
PCT/EP2007/009684 WO2008058669A2 (en) 2006-11-17 2007-11-08 Laser-welded crane rail for suspended crabs

Publications (2)

Publication Number Publication Date
EP2108071A2 EP2108071A2 (en) 2009-10-14
EP2108071B1 true EP2108071B1 (en) 2012-10-24

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EP07819693A Not-in-force EP2108071B1 (en) 2006-11-17 2007-11-08 Laser-welded crane rail for suspended crabs

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US (1) US8146507B2 (en)
EP (1) EP2108071B1 (en)
CN (1) CN101595263B (en)
DE (1) DE102006054682A1 (en)
RU (1) RU2434988C2 (en)
WO (1) WO2008058669A2 (en)

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CN101595263A (en) 2009-12-02
DE102006054682A1 (en) 2008-05-21
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WO2008058669A3 (en) 2008-10-16
WO2008058669A2 (en) 2008-05-22

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