EP1728756A1 - Boom - Google Patents

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Publication number
EP1728756A1
EP1728756A1 EP06009560A EP06009560A EP1728756A1 EP 1728756 A1 EP1728756 A1 EP 1728756A1 EP 06009560 A EP06009560 A EP 06009560A EP 06009560 A EP06009560 A EP 06009560A EP 1728756 A1 EP1728756 A1 EP 1728756A1
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EP
European Patent Office
Prior art keywords
pin
recess
boom
longitudinal axis
boom according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06009560A
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German (de)
French (fr)
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EP1728756B1 (en
Inventor
Manfred Mielich
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.)
Liebherr Werk Biberach GmbH
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Liebherr Werk Biberach GmbH
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Publication of EP1728756A1 publication Critical patent/EP1728756A1/en
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Publication of EP1728756B1 publication Critical patent/EP1728756B1/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
    • 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
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths

Definitions

  • the present invention relates to a jib of a crane, in particular of a tower crane, wherein the jib comprises at least two jib parts which are connected to one another by means of a connecting device and which have at least one lower chord and / or at least one upper chord.
  • Booms often consist of individual boom parts, which are to be connected in a suitable manner before commissioning.
  • the jib parts usually have a top flange and two bottom straps, wherein the upper and lower straps of two adjacent jib parts are connected to each other by means of identical or different joining techniques.
  • the lower straps have on their front side plates which extend transversely to the boom longitudinal axis.
  • the plates have bores through which a connecting element extends in the form of a bolt, which is fixed by means of a secured wedge.
  • the holes and the bolt do not extend on the front sides of the lower flange, but offset to the end of said plates.
  • a centering pin provided as an assembly aid, which engages in a aligned with this bore in the end face of the adjacent lower flange.
  • connection device for boom parts
  • the connecting device can not absorb the forces where they are introduced due to their staggered arrangement. Furthermore, moments may occur, which is undesirable.
  • Another disadvantage is the relatively complex structure of prior art connecting devices to call.
  • the connecting device consists of a pin, a receiving this recess and a fixing element which fixes the jib parts together.
  • the fixing element holds the pin in the recess.
  • the pin extends from the front side of the lower or upper flange of a jib part.
  • the recess is located in the front side of the lower or upper flange of the associated boom member.
  • the connecting device is thus located in the front side of the lower or upper belt and not offset to this, as is known from the prior art. This results in the advantage that the connection between the jib parts exists where forces are introduced. The occurrence of unwanted moments can be prevented.
  • the fixing element has a bolt and a bore in the pin and a bore in the recess having the cantilever part, wherein the bolt is received in both bores is particularly advantageous.
  • the bolt is through the hole in the pin and through the hole in which the Recessed having lower or upper flange of the other boom part out and holds in this way the pin in the recess.
  • the connecting device can be located exclusively on the lower chords of the jib parts. It is also conceivable that even or only the one or more upper straps are connected to each other by means of the connecting device according to the invention. It is also conceivable that for the not connected to the connecting device according to the invention upper or lower chords an alternative connection technique is selected.
  • the pin and the recess extends the longitudinal axis of the pin and the recess parallel to the longitudinal axis of the lower and / or the upper flange.
  • the longitudinal axis of the pin and the recess can be aligned with the longitudinal axis of the lower and / or upper flange or arranged offset to this.
  • the pin and the recess can thus be arranged centrally in the end face or offset relative to the front side center.
  • the holes in the pin and in the recess having the boom part in a transversely to the longitudinal axis of the lower and / or the upper flange extending plane.
  • a securing element may be provided, which is received in a bore extending transversely to the longitudinal axis of the bolt.
  • the distance between the pin and the recess to one, several or all outer sides of the lower and upper flange may be identical.
  • jib parts can be connected whose front-side cross-sectional areas are identical. It can be provided be that the outer surfaces of the interconnected jib parts are aligned.
  • FIG.1 upper view shows the end portions of the lower chords 10, 20 of two adjacent, to be joined together jib parts of a jib of a crane, for example a tower crane.
  • the lower chords 10, 20 are executed as hollow sections except for their end sections.
  • the lower chords 10, 20 have a square or rectangular cross-sectional area.
  • Perpendicular to the end face of the lower flange 20 extends from the lower flange 20 of the pin 22. This is cylindrical and has in its tip end forming a tapered portion on. Transverse to the longitudinal axis of the pin 22 is the through hole 30th
  • the depth of the recess 12 corresponds to or exceeds the length of the pin 22. At the level of the recess 12 is transverse to the longitudinal axis of the recess 12th extending through hole 30, which has from the front side of the lower flange 10 at such a distance that it is aligned with the bore 30 of the pin when the end faces of the lower chords 10, 20 abut each other.
  • the bolt 40 After insertion of the pin 22 in the recess 12 of the bolt 40 is inserted into the bores 30.
  • the bolt 40 has in its end portion a transverse to the longitudinal axis of bore through which after insertion of the bolt 40 which is designed as a wire clip securing element 50 is inserted. This prevents falling out of the bolt 40 from the bore 30th
  • the pin 22 and the recess 12 may be arranged centrally or offset from the center in the respective end faces.
  • the distance of the pin 22 and the recess 12 from the outer surfaces 14, 24 of the lower chords 10, 20 is identical.
  • the invention also allows the connection of different lower / upper straps, as shown in Fig. 1, bottom view.
  • the lower flange 60 shown on the right has a smaller cross-sectional area than the lower flange 10 connected thereto.
  • the surfaces of the lower straps 10, 60 are aligned with each other on two sides. On the other two sides there are stepped transitions.
  • FIG. 2 again shows the arrangement according to FIG. 1, upper illustration, so that reference is made in this respect.
  • the lower chords 10, 20 are substantially hollow and made compact in their end portions. This applies both to the portion of the lower flange 10, in which the recess 12 is located as well as for the end portion of the lower flange 20, which carries the pin 22.
  • the compact end sections can be formed by subsequently attached to the end faces of the lower / upper straps connecting elements. These can be welded, for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

A revolving crane has a hollow boom consisting of two sections each with upper (10, 20) and lower load-bearing straps. The two sections are joined by a peg (22) at the end of a first section (24) that locates in the matching socket (12) in the second section (14). The peg is secured by a transverse bolt (40) locating through aligned holes (30) in the second section and peg. The bolt is secured by a split spring pin (50).

Description

Die vorliegende Erfindung betrifft einen Ausleger eines Krans, insbesondere eines Turmdrehkrans, wobei der Ausleger wenigstens zwei mittels einer Verbindungsvorrichtung miteinander in Verbindung stehende Auslegerteile umfasst, die wenigstens einen Untergurt und/oder wenigstens einen Obergurt aufweisen.The present invention relates to a jib of a crane, in particular of a tower crane, wherein the jib comprises at least two jib parts which are connected to one another by means of a connecting device and which have at least one lower chord and / or at least one upper chord.

Ausleger bestehen häufig aus einzelnen Auslegerteilen, die vor Inbetriebnahme auf geeignete Weise miteinander zu verbinden sind. Die Auslegerteile weisen in der Regel einen Obergurt und zwei Untergurte auf, wobei die Ober- / Untergurte zweier benachbarter Auslegerteile mittels identischer oder unterschiedlicher Verbindungstechniken miteinander verbunden werden. Aus der EP 1 468 955 A1 ist beispielsweise ein Ausleger bekannt, dessen Untergurte an ihrer Stirnseite Platten aufweisen, die sich quer zur Auslegerlängsachse erstrecken. Die Platten weisen Bohrungen auf, durch die sich ein Verbindungselement in Form eines Bolzens erstreckt, der mittels eines gesicherten Keils fixiert wird. Die Bohrungen sowie der Bolzen erstrecken sich nicht auf den Stirnseiten des Untergurtes, sondern dazu versetzt im Endbereich der genannten Platten. Zusätzlich ist an der Stirnseite eines der Untergurte ein Zentrierstift als Montagehilfe vorgesehen, der in eine mit diesem fluchtende Bohrung in der Stirnseite des benachbarten Untergurtes eingreift.Booms often consist of individual boom parts, which are to be connected in a suitable manner before commissioning. The jib parts usually have a top flange and two bottom straps, wherein the upper and lower straps of two adjacent jib parts are connected to each other by means of identical or different joining techniques. From the EP 1 468 955 A1 For example, a boom is known, the lower straps have on their front side plates which extend transversely to the boom longitudinal axis. The plates have bores through which a connecting element extends in the form of a bolt, which is fixed by means of a secured wedge. The holes and the bolt do not extend on the front sides of the lower flange, but offset to the end of said plates. In addition, at the front of one of the lower straps a centering pin provided as an assembly aid, which engages in a aligned with this bore in the end face of the adjacent lower flange.

Bei einer derartigen Verbindungsvorrichtung für Auslegerteile besteht ein Nachteil darin, dass die Verbindungsvorrichtung aufgrund ihrer versetzten Anordnung die Kräfte nicht dort aufnehmen kann, wo sie eingeleitet werden. Des Weiteren kann es zum Auftreten von Momenten kommen, was unerwünscht ist. Als weiterer Nachteil ist der verhältnismäßig komplexe Aufbau vorbekannter Verbindungsvorrichtungen zu nennen.In such a connection device for boom parts, there is a disadvantage in that the connecting device can not absorb the forces where they are introduced due to their staggered arrangement. Furthermore, moments may occur, which is undesirable. Another disadvantage is the relatively complex structure of prior art connecting devices to call.

Es ist daher die Aufgabe der vorliegenden Erfindung, einen Ausleger der eingangs genannten Art dahingehend weiterzubilden, dass dieser einfach aufgebaut ist und auch zur Aufnahme großer Kräfte geeignet ist.It is therefore the object of the present invention to develop a boom of the type mentioned in that it is simple and is also suitable for receiving large forces.

Diese Aufgabe wird durch einen Ausleger mit den Merkmalen des Anspruchs 1 gelöst. Danach besteht die Verbindungsvorrichtung aus einem Zapfen, einer diesen aufnehmenden Ausnehmung sowie einem Fixierungselement, das die Auslegerteile aneinander fixiert. Dies kann beispielsweise dadurch geschehen, dass das Fixierungselement den Zapfen in der Ausnehmung hält. Dabei erstreckt sich der Zapfen von der Stirnseite des Unter- oder Obergurtes eines Auslegerteils. Die Ausnehmung befindet sich in der Stirnseite des Unter- oder Obergurtes des mit diesem verbundenen Auslegerteils. Die Verbindungsvorrichtung befindet sich somit in der Stirnseite des Unter- oder Obergurtes und nicht zu dieser versetzt, wie dies aus dem Stand der Technik bekannt ist. Daraus ergibt sich der Vorteil, dass die Verbindung zwischen den Auslegerteilen dort besteht, wo Kräfte eingeleitet werden. Das Auftreten unerwünschter Momente kann verhindert werden.This object is achieved by a boom with the features of claim 1. Thereafter, the connecting device consists of a pin, a receiving this recess and a fixing element which fixes the jib parts together. This can be done, for example, that the fixing element holds the pin in the recess. In this case, the pin extends from the front side of the lower or upper flange of a jib part. The recess is located in the front side of the lower or upper flange of the associated boom member. The connecting device is thus located in the front side of the lower or upper belt and not offset to this, as is known from the prior art. This results in the advantage that the connection between the jib parts exists where forces are introduced. The occurrence of unwanted moments can be prevented.

Besonders vorteilhaft ist es, wenn das Fixierungselement einen Bolzen sowie eine Bohrung in dem Zapfen sowie eine Bohrung in dem die Ausnehmung aufweisenden Auslegerteil aufweist, wobei der Bolzen in beiden Bohrungen aufgenommen ist. Der Bolzen ist durch die Bohrung in dem Zapfen sowie durch die Bohrung in dem die Ausnehmung aufweisenden Unter- oder Obergurt des anderen Auslegerteils geführt und hält auf diese Weise den Zapfen in der Ausnehmung.It when the fixing element has a bolt and a bore in the pin and a bore in the recess having the cantilever part, wherein the bolt is received in both bores is particularly advantageous. The bolt is through the hole in the pin and through the hole in which the Recessed having lower or upper flange of the other boom part out and holds in this way the pin in the recess.

Die Verbindungsvorrichtung kann sich ausschließlich an den Untergurten der Auslegerteile befinden. Denkbar ist ebenfalls, dass auch oder nur der oder die Obergurte mittels der erfindungsgemäßen Verbindungsvorrichtung miteinander in Verbindung stehen. Denkbar ist auch, dass für die nicht mit der erfindungsgemäßen Verbindungsvorrichtung verbundenen Ober- oder Untergurte eine alternative Verbindungstechnik gewählt ist.The connecting device can be located exclusively on the lower chords of the jib parts. It is also conceivable that even or only the one or more upper straps are connected to each other by means of the connecting device according to the invention. It is also conceivable that for the not connected to the connecting device according to the invention upper or lower chords an alternative connection technique is selected.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass sich die Längsachse des Zapfens sowie der Ausnehmung parallel zur Längsachse des Unter- und/oder des Obergurtes erstreckt. Die Längsachse des Zapfens sowie der Ausnehmung kann mit der Längsachse des Unter- und/oder Obergurtes fluchten oder zu dieser versetzt angeordnet sein. Der Zapfen sowie die Ausnehmung können in der Stirnseite somit zentrisch oder gegenüber dem Stirnseitenmittelpunkt versetzt angeordnet sein.In a further embodiment of the invention it is provided that extends the longitudinal axis of the pin and the recess parallel to the longitudinal axis of the lower and / or the upper flange. The longitudinal axis of the pin and the recess can be aligned with the longitudinal axis of the lower and / or upper flange or arranged offset to this. The pin and the recess can thus be arranged centrally in the end face or offset relative to the front side center.

Vorteilhaft befinden sich die Bohrungen in dem Zapfen sowie in dem die Ausnehmung aufweisenden Auslegerteil in einer sich quer zur Längsachse des Unter-und/oder des Obergurtes erstreckenden Ebene.Advantageously, the holes in the pin and in the recess having the boom part in a transversely to the longitudinal axis of the lower and / or the upper flange extending plane.

Um dem Bolzen gegen Lösen zu sichern, kann ein Sicherungselement vorgesehen sein, das in einer quer zur Längsachse des Bolzens verlaufenden Bohrung aufgenommen ist.In order to secure the bolt against loosening, a securing element may be provided, which is received in a bore extending transversely to the longitudinal axis of the bolt.

Der Abstand des Zapfens sowie der Ausnehmung zu einer, mehreren oder allen Außenseiten des Unter- bzw. Obergurtes kann identisch sein.The distance between the pin and the recess to one, several or all outer sides of the lower and upper flange may be identical.

Mittels der erfindungemäßen Verbindungsvorrichtung können Auslegerteile verbunden werden, deren stirnseitige Querschnittsflächen identisch sind. Dabei kann vorgesehen sein, dass die Außenflächen der miteinander verbundenen Auslegerteile miteinander fluchten.By means of the connecting device according to the invention, jib parts can be connected whose front-side cross-sectional areas are identical. It can be provided be that the outer surfaces of the interconnected jib parts are aligned.

Ebenso ist denkbar, dass die Querschnittsflächen der Auslegerteile nicht übereinstimmen, d.h. dass mittels der Verbindungsvorrichtung Auslegerteile verbunden werden, die unterschiedlich große stirnseitige Flächen aufweisen.It is also conceivable that the cross-sectional areas of the cantilever parts do not match, i. that by means of the connecting device boom parts are connected, which have different sized frontal surfaces.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1:
unterschiedliche Ansichten von Untergurtabschnitten von Auslegerteilen in unterschiedlichen Montagezuständen sowie mit unterschiedlichen Untergurtquerschnitten und
Fig. 2:
eine perspektivische schematische Ansicht von Untergurtabschnitten von Auslegerteilen in einer Explosionsdarstellung.
Further details and advantages of the invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it:
Fig. 1:
different views of Untergurtabschnitten of jib parts in different mounting conditions and with different Untergurtquerschnitten and
Fig. 2:
a perspective schematic view of Untergurtabschnitten of boom parts in an exploded view.

Fig.1, obere Darstellung zeigt die Endbereiche der Untergurte 10, 20 zweier benachbarter, miteinander zu verbindender Auslegerteile eines Auslegers eines Krans, beispielsweise eines Turmdrehkrans. Die Untergurte 10, 20 sind bis auf ihre Endabschnitte als Hohlprofile ausgeführt.Fig.1, upper view shows the end portions of the lower chords 10, 20 of two adjacent, to be joined together jib parts of a jib of a crane, for example a tower crane. The lower chords 10, 20 are executed as hollow sections except for their end sections.

Die Untergurte 10, 20 weisen eine quadratische oder rechteckige Querschnittsfläche auf.The lower chords 10, 20 have a square or rectangular cross-sectional area.

Senkrecht zu der Stirnseite des Untergurtes 20 erstreckt sich von dem Untergurt 20 der Zapfen 22. Dieser ist zylindrisch ausgeführt und weist in seinem die Spitze bildenden Endbereich einen konisch zulaufenden Abschnitt auf. Quer zur Längsachse des Zapfens 22 befindet sich dessen Durchgangsbohrung 30.Perpendicular to the end face of the lower flange 20 extends from the lower flange 20 of the pin 22. This is cylindrical and has in its tip end forming a tapered portion on. Transverse to the longitudinal axis of the pin 22 is the through hole 30th

In der benachbarten Stirnseite des mit dem Untergurt 20 zu verbindenden Untergurtes 10 befindet sich die als Bohrung ausgeführte Ausnehmung 12. Die Tiefe der Ausnehmung 12 entspricht oder übersteigt die Länge des Zapfens 22. Auf Höhe der Ausnehmung 12 befindet sich die quer zur Längsachse der Ausnehmung 12 erstreckende Durchgangsbohrung 30, die von der Stirnseite des Untergurtes 10 einen solchen Abstand aufweist, dass sie mit der Bohrung 30 des Zapfens fluchtet, wenn die Stirnseiten der Untergurte 10, 20 aneinander anliegen.The depth of the recess 12 corresponds to or exceeds the length of the pin 22. At the level of the recess 12 is transverse to the longitudinal axis of the recess 12th extending through hole 30, which has from the front side of the lower flange 10 at such a distance that it is aligned with the bore 30 of the pin when the end faces of the lower chords 10, 20 abut each other.

Nach dem Einführen des Zapfens 22 in die Ausnehmung 12 wird der Bolzen 40 in die Bohrungen 30 eingeführt. Der Bolzen 40 weist in seinem Endabschnitt eine quer zu dessen Längsachse verlaufende Bohrung auf, durch die nach der Einführung des Bolzens 40 das als Drahtbügel ausgeführte Sicherungselement 50 eingeschoben wird. Dieses verhindert das Herausfallen des Bolzens 40 aus der Bohrung 30.After insertion of the pin 22 in the recess 12 of the bolt 40 is inserted into the bores 30. The bolt 40 has in its end portion a transverse to the longitudinal axis of bore through which after insertion of the bolt 40 which is designed as a wire clip securing element 50 is inserted. This prevents falling out of the bolt 40 from the bore 30th

Der Zapfen 22 und die Ausnehmung 12 können in den jeweiligen Stirnseiten mittig oder auch versetzt zur Mitte angeordnet sein. Der Abstand des Zapfens 22 und der Ausnehmung 12 von den Außenflächen 14, 24 der Untergurte 10, 20 ist identisch.The pin 22 and the recess 12 may be arranged centrally or offset from the center in the respective end faces. The distance of the pin 22 and the recess 12 from the outer surfaces 14, 24 of the lower chords 10, 20 is identical.

Im zusammengefügten Zustand, der in Fig. 1, mittlere Darstellung wiedergegeben ist, gehen sämtliche Außenflächen 14, 24 der Untergurte 10, 20 ineinander über, d.h. fluchten miteinander.In the assembled state, which is shown in Fig. 1, middle illustration, go all outer surfaces 14, 24 of the lower chords 10, 20 into each other, i. aligned with each other.

Die Erfindung ermöglicht auch die Verbindung unterschiedlicher Unter-/Obergurte, wie dies in Fig. 1, untere Darstellung wiedergegeben ist. In diesem Beispiel weist der rechts dargestellte Untergurt 60 eine kleinere Querschnittfläche auf als der mit diesem verbundene Untergurt 10. Die Oberflächen der Untergurte 10, 60 fluchten an zwei Seiten miteinander. An den anderen beiden Seiten ergeben sich stufenförmige Übergänge.The invention also allows the connection of different lower / upper straps, as shown in Fig. 1, bottom view. In this example, the lower flange 60 shown on the right has a smaller cross-sectional area than the lower flange 10 connected thereto. The surfaces of the lower straps 10, 60 are aligned with each other on two sides. On the other two sides there are stepped transitions.

Fig. 2 zeigt nochmals die Anordnung gemäß Fig. 1, obere Darstellung, so dass insoweit Bezug genommen wird. Aus Fig. 2 ist ersichtlich, dass die Untergurte 10, 20 im wesentlichen hohl und in ihren Endabschnitten kompakt ausgeführt sind. Dies gilt sowohl für den Abschnitt des Untergurtes 10, in dem sich die Ausnehmung 12 befindet als auch für den Endbereich des Untergurtes 20, der den Zapfen 22 trägt. Die kompakten Endabschnitte können durch nachträglich an die Stirnseiten der Unter-/Obergurte angebrachte Anschlusselemente gebildet werden. Diese können beispielsweise angeschweißt sein.FIG. 2 again shows the arrangement according to FIG. 1, upper illustration, so that reference is made in this respect. From Fig. 2 it can be seen that the lower chords 10, 20 are substantially hollow and made compact in their end portions. This applies both to the portion of the lower flange 10, in which the recess 12 is located as well as for the end portion of the lower flange 20, which carries the pin 22. The compact end sections can be formed by subsequently attached to the end faces of the lower / upper straps connecting elements. These can be welded, for example.

Claims (11)

Ausleger eines Krans, insbesondere eines Turmdrehkrans, mit wenigstens einem ersten und einem zweiten Auslegerteil, die mittels wenigstens einer Verbindungsvorrichtung miteinander in Verbindung stehen und die jeweils wenigstens einen Untergurt (10, 20) und/oder Obergurt aufweisen,
dadurch gekennzeichnet,
dass die Verbindungsvorrichtung aus einem Zapfen (22), einer diesen aufnehmenden Ausnehmung (12) sowie einem Fixierungselement besteht, das die Auslegerteile relativ zueinander fixiert, wobei sich der Zapfen (22) von der Stirnseite des Unter- (10, 20) oder Obergurtes des ersten Auslegerteils erstreckt und wobei sich die Ausnehmung (12) in der Stirnseite des Unter- (10, 20) oder Obergurtes des zweiten Auslegerteils befindet.Boom of a crane, in particular of a tower crane, with at least one first and one second boom part, which communicate with one another by means of at least one connecting device and which each have at least one lower flange (10, 20) and / or upper flange,
characterized,
in that the connecting device consists of a pin (22), a recess (12) receiving it and a fixing element which fixes the jib parts relative to each other, the pin (22) projecting from the end face of the lower (10, 20) or upper chord of the extends first Auslegerteils and wherein the recess (12) in the end face of the lower (10, 20) or top flange of the second boom part is located. Ausleger nach Anspruch 1, dadurch gekennzeichnet, dass das Fixierungselement einen Bolzen (40) aufweist, der in einer Bohrung (30) in dem Zapfen (22) sowie in einer Bohrung (30) des die Ausnehmung (12) aufweisenden Auslegerteils aufgenommen ist.A boom according to claim 1, characterized in that the fixing element comprises a bolt (40) in a bore (30) in the pin (22) and in a bore (30) of the recess (12) having the jib part is received. Ausleger nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Verbindungsvorrichtung ausschließlich an den Untergurten (10, 20) der Auslegerteile befindet.Boom according to claim 1 or 2, characterized in that the connecting device is located exclusively on the lower chords (10, 20) of the jib parts. Ausleger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Längsachse des Zapfens (22) sowie der Ausnehmung (12) parallel zur Längsachse des Unter- (10, 20) und/oder des Obergurtes erstreckt.Boom according to one of the preceding claims, characterized in that extending the longitudinal axis of the pin (22) and the recess (12) parallel to the longitudinal axis of the lower (10, 20) and / or the upper flange. Ausleger nach Anspruch 4, dadurch gekennzeichnet, dass die Längsachse des Zapfens (22) sowie der Ausnehmung (12) mit der Längsachse des Unter-(10, 20) und/oder Obergurtes fluchtet oder zu dieser versetzt angeordnet ist.Boom according to claim 4, characterized in that the longitudinal axis of the pin (22) and the recess (12) is aligned with the longitudinal axis of the lower (10, 20) and / or top flange or arranged offset to this. Ausleger nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Bohrungen (30) in dem Zapfen (22) sowie in dem die Ausnehmung (12) aufweisenden Auslegerteil in einer sich quer zur Längsachse des Unter- (10, 20) und/oder des Obergurtes erstreckenden Ebene verlaufen.Boom according to one of claims 2 to 5, characterized in that the bores (30) in the pin (22) and in which the recess (12) having boom part in a transverse to the longitudinal axis of the lower (10, 20) and / or the upper belt extending plane. Ausleger nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass ein Sicherungselement (50) vorgesehen ist, das in einer quer zur Längsachse des Bolzens (40) verlaufenden Bohrung des Bolzens (40) aufgenommen ist und den Bolzen (40) gegen Lösen sichert.Boom according to one of claims 2 to 6, characterized in that a securing element (50) is provided which is received in a transverse to the longitudinal axis of the bolt (40) extending bore of the bolt (40) and secures the bolt (40) against loosening , Ausleger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand des Zapfens (22) sowie der Ausnehmung (12) zu einer, mehreren oder allen Außenseiten (12, 24) des Unter- (10, 20) bzw. Obergurtes identisch ist.Boom according to one of the preceding claims, characterized in that the distance of the pin (22) and the recess (12) to one, several or all outer sides (12, 24) of the lower (10, 20) and top flange is identical. Ausleger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Querschnittsflächen der Unter- (10, 20) und/oder Obergurte identisch sind.Boom according to one of the preceding claims, characterized in that the cross-sectional areas of the lower (10, 20) and / or upper chords are identical. Ausleger nach Anspruch 9, dadurch gekennzeichnet, dass die Außenflächen (14, 24) der miteinander verbundenen Unter- (10, 20) und/oder Obergurte miteinander fluchten.Boom according to claim 9, characterized in that the outer surfaces (14, 24) of the interconnected lower (10, 20) and / or upper straps are aligned. Ausleger nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Querschnittsflächen der Unter- (10, 60) und/oder Obergurte nicht übereinstimmen.Boom according to one of claims 1 to 8, characterized in that the cross-sectional areas of the lower (10, 60) and / or upper chords do not match.
EP06009560.1A 2005-06-02 2006-05-09 Boom Active EP1728756B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005008602U DE202005008602U1 (en) 2005-06-02 2005-06-02 boom

Publications (2)

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EP1728756A1 true EP1728756A1 (en) 2006-12-06
EP1728756B1 EP1728756B1 (en) 2014-04-30

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024003167A1 (en) 2022-06-30 2024-01-04 Wolffkran Holding Ag Connection device for connecting jib segments of a jib of a tower crane
DE102022116387A1 (en) 2022-06-30 2024-01-04 Wolffkran Holding Ag CONNECTING DEVICE FOR CONNECTING BOOM SEGMENTS OF A BOOM OF A TOWER CRANE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
NL7100830A (en) * 1966-12-19 1971-05-25
EP1016617A1 (en) * 1991-07-25 2000-07-05 Manitowoc Crane Group, Inc. Quick-connect sectional boom members for cranes and the like
EP1468955A1 (en) 2003-04-17 2004-10-20 Potain Dismountable assembly device for jib elements of a tower crane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1096242A (en) * 1964-12-02 1967-12-20 British Hoist And Crane Compan Sectional towers for hoists
DE3842726C3 (en) * 1988-12-19 2001-01-18 Mannesmann Ag Multi-section bolt connection
DE4101291A1 (en) * 1991-01-17 1992-07-23 Man Ghh Logistics DETACHABLE EXTENSION FOR A TOWER CRANE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7100830A (en) * 1966-12-19 1971-05-25
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
EP1016617A1 (en) * 1991-07-25 2000-07-05 Manitowoc Crane Group, Inc. Quick-connect sectional boom members for cranes and the like
EP1468955A1 (en) 2003-04-17 2004-10-20 Potain Dismountable assembly device for jib elements of a tower crane

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ES2464591T3 (en) 2014-06-03
EP1728756B1 (en) 2014-04-30

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