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EP2253576A1 - Angle adjustment of a jib system - Google Patents

Angle adjustment of a jib system Download PDF

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Publication number
EP2253576A1
EP2253576A1 EP10162228A EP10162228A EP2253576A1 EP 2253576 A1 EP2253576 A1 EP 2253576A1 EP 10162228 A EP10162228 A EP 10162228A EP 10162228 A EP10162228 A EP 10162228A EP 2253576 A1 EP2253576 A1 EP 2253576A1
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EP
European Patent Office
Prior art keywords
boom
openings
initial
angular position
target
Prior art date
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Granted
Application number
EP10162228A
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German (de)
French (fr)
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EP2253576B1 (en
Inventor
Michael Martin
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.)
Tadano Demag GmbH
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Terex Demag GmbH
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Publication of EP2253576A1 publication Critical patent/EP2253576A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/344—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport purposes

Definitions

  • the invention relates to a method and a device for angular adjustment of a boom system of cranes and a crane with such a device.
  • two interconnected boom units of a boom system can be converted from an initial angular position to a different angular position thereof by means of connecting straps by the connecting straps in the initial angular position are arranged such that a plurality of openings of the connection tabs are aligned in pairs for the passage of a connecting element connecting the boom units.
  • the cantilever system is held in the initial angular position by the linkage member disposed in a pair of aligned starting apertures, initially relieving the linkage member to change to a target angular position, and then disengaging from the pair of aligned camming studs. Apertures removed and finally in a further provided by pairs of aligned target openings for connecting the same is arranged.
  • a desired target angular position can be selected and set from a plurality of possible ones.
  • the angular adjustment with a method according to claim 3 allows a simple relative movement between the two boom units.
  • connection element is relieved in a particularly simple manner.
  • a boom unit has a connecting lug with a plurality of openings, wherein the connecting lugs of the boom units are arranged in the output angular position such that longitudinal axes of the boom units are arranged in parallel and a plurality of openings in pairs to By plugging a connecting element connecting the boom units with each other.
  • the two boom units form an aligned boom system.
  • Each connecting lug has two legs which are arranged at an angle to each other, wherein the first leg of an initial opening for connecting the connecting tabs with the connecting element in the initial angular position and the second leg a plurality of target openings Has connection of the connection tabs with the connection element in different target angular positions.
  • a boom system according to claim 7 allows selection from two different target angular positions.
  • two particularly preferred angular positions are quickly and easily adjustable.
  • a distance of the initial opening to the apex opening and distances of the target openings to the apex opening may be set such that the longitudinal axes in different target angular positions, in particular in a 20 ° angular position or in a 40 ° angular position , Can be arranged by connecting the corresponding target openings through the connection element to each other.
  • An embodiment of the boom system according to claim 9 allows additional target angular positions without the need for further connection tabs are used. This can be achieved, for example, by the legs having further target openings which, when the angle arrangement of the legs is changed, are aligned such that further target angular positions of the boom units can be set. Further target angular positions may for example be greater than 20 °, occupy an angle between 20 ° and 40 ° or be greater than 40 °.
  • connection tabs allow the reduction of manufacturing and thus also the cost of the connection tabs.
  • the first connection tab may comprise one sheet more than the second connection tab, wherein the connection tabs may be offset from each other such that the sheets of the second connection tab are disposed between the sheets of the first connection tab.
  • Jib systems according to claims 11 and 12 can serve as an extension for a lattice mast or for connecting a telescopic boom head to a lattice mast.
  • a boom system according to claim 13 has in the output angular position a small size, in particular in the direction of the longitudinal axes of the boom units, on.
  • a crane on which the boom system is mounted may have a permissible overall length and is therefore approved for use on the road.
  • an angular adjustment of a boom system is simple, fast and therefore cost.
  • An in Fig. 1 illustrated boom system 1 comprises two by a pivot unit 2 interconnected boom units 3, 4, wherein both boom units 3, 4 are a lattice mast. It is also possible that a boom unit is designed as a telescopic boom head.
  • Each boom unit 3, 4 has a lower flange 5, an upper flange 7 connected to the lower flange 5 by at least one strut 6, a connecting tongue 8, 8a attached to the upper flange 7 with a plurality of openings 9 to 12 and a longitudinal axis 13, 13a , In the illustrated initial angular position of the boom system 1, the two longitudinal axes 13, 13 a of the boom units 3, 4 are parallel.
  • the lower flange 5 comprises a pivoting lug 14 with a pivoting opening 15, wherein the boom units 3, 4 are arranged such that the pivoting openings 15 are aligned with each other and are connected to each other by a bolt 16.
  • the interconnected by the bolt 16 pivot tabs 14 form the pivot unit 2, which is respectively mounted on the lower flange 5 of the two boom units 3, 4 and pivotal movement of the two boom units 3, 4 in a pivoting direction 2a allows.
  • connection tab 8, 8a has two legs 17, 18, which are arranged at an angle, in particular of less than 90 ° to each other.
  • the opening provided at a vertex 19 of the connection tab 8, 8a is called apex opening 9 and serves to pivotally connect the connection tab 8, 8a to the top flange 7 by a bolt 16.
  • the opening 10 of the first leg 17 is initially Opening, the openings 11, 12 of the second leg 18 referred to as target openings.
  • connection tabs 8, 8a are arranged such that both the initial openings 10 of the connection tabs 8, 8a and the target openings 11 and 12 of the connection tabs 8, 8a in pairs with each other aligned. Furthermore, the connection tabs 8, 8a are connected to one another by a connecting element 20 inserted in their initially arranged openings 10 in alignment. Since the initial openings 10 as well as the target openings 11, 12 are formed as slots, in each case an aligned pair of openings 10, 11, 12 inserted connecting element 20 is movable. For this purpose, the connection element 20 must be relieved. The discharge process will be explained below.
  • connection tabs 8, 8a respectively on the first leg 17 a stop 22 which comprises at least one nose 25 with a threaded bore 26 and a threaded pin 27 screwed therein.
  • the stop 22 is in the initial angular position on a clevis 28 of the respective opposite upper flange 7 of the respective boom unit 3, 4, so that a pivoting movement of the boom units 3, 4 is blocked against the pivoting direction 2a in the initial angular position ,
  • a central distance A1 of the initial opening 10 from the apex opening 9 is smaller than centric distances A2, A3 of the target openings 11, 12 from the apex opening 9.
  • the distances A1, A2, A3, the resulting Target angular positions can be set.
  • the boom system 1 In the initial angular position, the boom system 1 has a horizontal extent A4, which is determined by the size of the connection tabs 8, 8a. In this case, the extent A4 is smaller than a maximum permissible value, so that a crane with a boom system 1 mounted thereon does not exceed an overall length permissible for road transport and is therefore permitted for road transport.
  • a method for angular adjustment of the boom system 1 will be explained.
  • the lifting can be done for example by means of an auxiliary crane, forklift, or other hoist, not shown.
  • the raising of the boom unit 3 by a winch located on the crane is possible.
  • the boom unit 3 can be supported on the ground with an end opposite the connection tab 8.
  • connection member 20 After the pair of aligned target openings 11 or 12 are connected to each other by the connection member 20, the connection member 20 is again loaded by releasing the raised boom unit 3 again. This opens the connection of the connection tabs 8, 8a at the initial openings 10, wherein the boom units 3, 4 about the pivot unit 2 in the pivoting direction 2a so far pivot until the two vertex openings 9 and through the Connection element 20 connected target openings 11, 12 are arranged on a common line 23, 24 (see Fig. 3 and 4 ).
  • connection tab 8 has three leaves 21 and the connecting tab 8a two leaves 21 on.
  • the leaves 21 are arranged parallel to and spaced from one another in the direction of the first connecting element 20.
  • connection tabs 8, 8a are arranged offset from one another in such a way that the leaves 21 of the connection tab 8a are arranged between the leaves 21 of the connection tab 8.
  • the geometry of the blades 21 is identical for both connecting straps 8, 8a, which reduces the production costs and thus the manufacturing costs for the connecting straps 8, 8a.
  • the connection tabs 8, 8a and thus their leaves 21 may also have different geometries.
  • the boom system 1 is in Fig. 3 in a first target angular position and in Fig. 4 shown in a second target angular position.
  • the first target angular position is characterized in that the longitudinal axes 13, 13a of the boom units 3, 4 enclose an angle of 20 ° and in the second target angular position an angle of 40 °.
  • the connecting element 20 While in the 20 ° angular position, the connecting element 20 is arranged in the target openings 11, the connecting element 20 connects in the 40 ° -Winkel too the target openings 12.
  • the 20 ° -Winkel too are the apex openings 9 and the target openings 11 connected to one another by the connection element 20 are arranged on a straight line 23 and in the 40 ° angular position the two vertex openings 9 and the target openings 12 connected to one another by means of the connection element 20 on a straight line 24.
  • FIGS Fig. 1 and 6 show another embodiment of connecting tabs 29, 29a of the cantilever system 1.
  • the essential difference from the first embodiment of the boom system 1 is the design of the connecting element as a bolt 30 with bayonet closure.
  • an aperture 31 is attached to one of the outer leaves 21 of the connection tab 29, so that the openings 10, 11, 12 are bounded by a respective substantially rectangular cutout 32.
  • the bolt 30 is disposed in the target opening 12, wherein the connection tabs 29, 29 a in Fig. 5 in the initial angular position and in Fig. 6 are shown in the 40 ° -Winkel ein.
  • the stop 33 is formed in this embodiment by rounded, concave bearing surfaces 34 which are provided on the first leg 17 of the connecting lug 29 a.
  • connection tabs wherein in each case the angular arrangement of the legs is mutually variable, for example by a pivot joint is provided at the apex.
  • the pivotally interconnected legs of a connecting tab could have further target openings, which are aligned with each other in a changed angular arrangement of the legs in the output angular position of the boom system with each other, so that further target angular positions of the connecting elements with only one connection -Lasche be enabled.
  • connection tabs whose angular arrangements differ between the legs. With these measures, the central distances A1 to A3 between the aligned openings can be influenced in such a way that different angular positions can be set.

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

Abstract

Verfahren zur Winkelverstellung eines Auslegersystems (1) eines Krans, umfassend die Schritte, Bereitstellen von zwei Ausleger-Einheiten (3, 4) des Auslegersystems (1), die bezüglich ihrer Längsachsen (13, 13a) in einer Winkelstellung zueinander veränderlich anordenbar sind, Anordnen von an den Ausleger-Einheiten (3, 4) angebrachten Verbindungs-Laschen (8, 8a; 29, 29a) derart, dass in einer Ausgangs-Winkelstellung die Längsachsen (13, 13a) der Ausleger-Einheiten (3, 4) parallel sind, Anfangs-Öffnungen (10) und Ziel-Öffnungen (11, 12) der Verbindungs-Laschen (8, 8a; 29, 29a) paarweise zum Durchstecken eines die Ausleger-Einheiten (3, 4) verbindenden Verbindungs-Elements (20; 30) miteinander fluchten, wobei die fluchtenden Anfangs-Öffnungen (10) mit dem Verbindungs-Element (20; 30) verbunden sind, Entlasten des die fluchtenden Anfangs-Öffnungen (10) verbindenden Verbindungs-Elements (20; 30), Entfernen des ersten Verbindungs-Elementes (20; 30), Verbinden eines Paares der fluchtenden Ziel-Öffnungen (11; 12) mit dem Verbindungs-Element (20; 30), und Anordnen der Ausleger-Einheiten (3, 4) in einer von der Ausgangs-Winkelstellung verschiedenen Ziel-Winkelstellung.

Figure imgaf001
Method for angular adjustment of a jib system (1) of a crane, comprising the steps of providing two jib units (3, 4) of the jib system (1) which can be arranged mutually variably with respect to their longitudinal axes (13, 13a), arranging of connecting links (8, 8a; 29, 29a) attached to the boom units (3, 4) such that in an initial angular position the longitudinal axes (13, 13a) of the boom units (3, 4) are parallel , Start openings (10) and target openings (11, 12) of the connection tabs (8, 8a; 29, 29a) in pairs for the passage of a connecting element (20, 30, 30) connecting the arm units (3, 4) ), wherein the initial mating openings (10) are connected to the connecting element (20; 30), relieving the connecting element (20; 30) connecting the aligned starting openings (10), removing the first connection Element (20; 30), connecting a pair of alignment the target openings (11; 12) with the connecting element (20; 30), and arranging the boom units (3, 4) at a different target angular position from the initial angular position.
Figure imgaf001

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Winkelverstellung eines Auslegersystems von Kranen sowie einen Kran mit einer derartigen Vorrichtung.The invention relates to a method and a device for angular adjustment of a boom system of cranes and a crane with such a device.

Durch offenkundige Vorbenutzung ist bekannt, dass ein Kran ein Auslegersystem aufweist, an das eine Verlängerung und/oder eine Abwinkelung angebracht werden kann. Die EP 1 477 451 A2 , die DE 36 42 248 A1 und die WO 2009/026 870 A1 offenbaren Vorrichtungen, mittels derer eine Winkelstellung eines Auslegersystems veränderbar ist. Nachteilig ist, dass die Winkelverstellung des Auslegersystems oftmals weiterer Hilfsmittel und/oder Zwischenschritte bedarf. Ein schneller und einfach zu handhabender Wechsel von einer Winkelstellung in eine andere ist mit den genannten Vorrichtungen nicht möglich.By obvious prior use, it is known that a crane has a boom system to which an extension and / or a bend can be attached. The EP 1 477 451 A2 , the DE 36 42 248 A1 and the WO 2009/026870 A1 disclose devices by means of which an angular position of a boom system is variable. The disadvantage is that the angle adjustment of the boom system often requires further aids and / or intermediate steps. A quick and easy to handle change from one angular position to another is not possible with the devices mentioned.

Es ist daher die Aufgabe der Erfindung, ein Verfahren zur Winkelverstellung eines Auslegersystems von Kranen derart zu gestalten, dass ein Wechsel von einer Ausgangs-Winkelstellung in mehrere davon verschiedene Winkelstellungen möglich ist, wobei der Wechsel zwischen zwei Winkelstellungen schnell umzusetzen und einfach zu handhaben ist.It is therefore an object of the invention to design a method for angular adjustment of a boom system of cranes so that a change from an initial angular position in several different angular positions is possible, with the change between two angular positions quickly implement and easy to handle.

Diese Aufgabe ist erfindungsgemäß durch ein Verfahren mit den im Anspruch 1 angegebenen Merkmalen gelöst.This object is achieved by a method having the features specified in claim 1.

Erfindungsgemäß wurde erkannt, dass zwei miteinander verbundene Ausleger-Einheiten eines Auslegersystems von einer Ausgangs-Winkelstellung in eine davon verschiedene Winkelstellung mittels Verbindungs-Laschen überführbar sind, indem die Verbindungs-Laschen in der Ausgangs-Winkelstellung derart angeordnet sind, dass mehrere Öffnungen der Verbindungs-Laschen paarweise zum Durchstecken eines die Ausleger-Einheiten verbindenden Verbindungs-Elements fluchten. Das Auslegersystem wird in der Ausgangs-Winkelstellung durch das Verbindungs-Element, das in einem Paar fluchtender Anfangs-Öffnungen angeordnet ist, gehalten, wobei zum Wechsel in eine Ziel-Winkelstellung zunächst das Verbindungs-Element entlastet, anschließend aus dem Paar der fluchtenden Anfangs-Öffnungen entfernt und schließlich in einem weiteren von dafür vorgesehenen Paaren fluchtender Ziel-Öffnungen zum Verbinden derselben angeordnet wird. Damit kann ausgehend von der Ausgangs-Winkelstellung durch einfache Bedienung, insbesondere durch Einhandbedienung, eine gewünschte Ziel-Winkelstellung aus mehreren möglichen ausgewählt und eingestellt werden.According to the invention it has been recognized that two interconnected boom units of a boom system can be converted from an initial angular position to a different angular position thereof by means of connecting straps by the connecting straps in the initial angular position are arranged such that a plurality of openings of the connection tabs are aligned in pairs for the passage of a connecting element connecting the boom units. The cantilever system is held in the initial angular position by the linkage member disposed in a pair of aligned starting apertures, initially relieving the linkage member to change to a target angular position, and then disengaging from the pair of aligned camming studs. Apertures removed and finally in a further provided by pairs of aligned target openings for connecting the same is arranged. Thus, starting from the initial angular position by simple operation, in particular by one-hand operation, a desired target angular position can be selected and set from a plurality of possible ones.

Mit einem Verfahren gemäß Anspruch 2 können besonders bevorzugte Winkelstellungen schnell und direkt eingestellt werden.With a method according to claim 2 particularly preferred angular positions can be adjusted quickly and directly.

Die Winkelverstellung mit einem Verfahren gemäß Anspruch 3 ermöglicht eine einfache Relativbewegung zwischen den beiden Ausleger-Einheiten.The angular adjustment with a method according to claim 3 allows a simple relative movement between the two boom units.

Mit einem Verfahren gemäß Anspruch 4 ist eine Winkelverstellung der Ausleger-Einheiten ohne weitere Hilfsmittel möglich.With a method according to claim 4, an angular adjustment of the boom units is possible without further aids.

Durch ein Verfahren gemäß Anspruch 5 wird ein Verbindungs-Element in besonders einfacher Weise entlastet.By a method according to claim 5, a connection element is relieved in a particularly simple manner.

Darüber hinaus sind bislang bekannte winkelverstellbare Auslegersysteme zumeist aufwendig konstruiert und beanspruchen deshalb einen großen Bauraum, insbesondere in der Ausgangs-Winkelstellung der Auslegersysteme. Dadurch kann die Gesamtlänge eines Krans, an den das Auslegersystem montiert ist, eine zulässige Gesamtlänge überschreiten, so dass ein Straßentransport des Krans nicht möglich ist.In addition, previously known angle-adjustable cantilever systems are usually designed consuming and therefore require a large amount of space, especially in the output angular position of the boom systems. As a result, the total length of a crane, to which the boom system is mounted, exceed a permissible total length, so that a road transport of the crane is not possible.

Es ist eine weitere Aufgabe der Erfindung, eine Vorrichtung zur Winkelverstellung eines Auslegersystems von Kranen derart zu gestalten, dass ein Wechsel von einer Ausgangs-Winkelstellung zu einer Ziel-Winkelstellung schnell, kostengünstig und unter Erhaltung der Stabilität des Auslegersystems ermöglicht wird, wobei das Auslegersystem, insbesondere in der Ausgangs-Winkelstellung, eine Baugröße derart aufweist, dass der Straßentransport eines Krans mit montiertem Auslegersystem möglich ist.It is a further object of the invention to provide an apparatus for angular adjustment of a boom system of cranes so as to enable a change from an initial angular position to a target angular position quickly, inexpensively and maintaining the stability of the boom system, the boom system comprising especially in the initial angular position, a size such that the road transport of a crane with mounted boom system is possible.

Diese Aufgabe ist erfindungsgemäß durch ein winkelverstellbares Auslegersystem mit den im Anspruch 6 angegebenen Merkmalen gelöst.This object is achieved by a angle-adjustable boom system with the features specified in claim 6.

Erfindungsgemäß wurde erkannt, dass eine Ausleger-Einheit eine Verbindungs-Lasche mit mehreren Öffnungen aufweist, wobei die Verbindungs-Laschen der Ausleger-Einheiten in der Ausgangs-Winkelstellung derart angeordnet sind, dass Längsachsen der Ausleger-Einheiten parallel angeordnet sind und mehrere Öffnungen paarweise zum Durchstecken eines die Ausleger-Einheiten verbindenden Verbindungs-Elements miteinander fluchten. In dieser Anordnung bilden die beiden Ausleger-Einheiten ein fluchtendes Auslegersystem. Jede Verbindungs-Lasche weist zwei Schenkel auf, die in einem Winkel zueinander angeordnet sind, wobei der erste Schenkel eine Anfangs-Öffnung zur Verbindung der Verbindungs-Laschen mit dem Verbindungs-Element in der Ausgangs-Winkelstellung und der zweite Schenkel mehrere Ziel-Öffnungen zur Verbindung der Verbindungs-Laschen mit dem Verbindungs-Element in verschiedenen Ziel-Winkelstellungen aufweist.According to the invention, it has been recognized that a boom unit has a connecting lug with a plurality of openings, wherein the connecting lugs of the boom units are arranged in the output angular position such that longitudinal axes of the boom units are arranged in parallel and a plurality of openings in pairs to By plugging a connecting element connecting the boom units with each other. In this arrangement, the two boom units form an aligned boom system. Each connecting lug has two legs which are arranged at an angle to each other, wherein the first leg of an initial opening for connecting the connecting tabs with the connecting element in the initial angular position and the second leg a plurality of target openings Has connection of the connection tabs with the connection element in different target angular positions.

Ein Auslegersystem gemäß Anspruch 7 ermöglicht die Auswahl aus zwei verschiedenen Ziel-Winkelstellungen.A boom system according to claim 7 allows selection from two different target angular positions.

Durch Gestaltungen des Auslegersystems nach Anspruch 8 sind zwei besonders bevorzugte Winkelstellungen schnell und einfach einstellbar. Ein Abstand der Anfangs-Öffnung zu der Scheitelpunkts-Öffnung und Abstände der Ziel-Öffnungen zu der Scheitelpunkts-Öffnung können derart festgelegt werden, dass die Längsachsen in verschiedenen Ziel-Winkelstellungen, insbesondere in einer 20°-Winkelstellung oder in einer 40°-Winkelstellung, durch Verbinden der entsprechenden Ziel-Öffnungen durch das Verbindungs-Element zueinander anordenbar sind.By designs of the boom system according to claim 8, two particularly preferred angular positions are quickly and easily adjustable. A distance of the initial opening to the apex opening and distances of the target openings to the apex opening may be set such that the longitudinal axes in different target angular positions, in particular in a 20 ° angular position or in a 40 ° angular position , Can be arranged by connecting the corresponding target openings through the connection element to each other.

Eine Ausgestaltung des Auslegersystems gemäß Anspruch 9 ermöglicht zusätzliche Ziel-Winkelstellungen, ohne dass weitere Verbindungs-Laschen verwendet werden müssen. Dies kann beispielsweise dadurch erreicht werden, dass die Schenkel weitere Ziel-Öffnungen aufweisen, die bei veränderter Winkelanordnung der Schenkel derart fluchten, dass weitere Ziel-Winkelstellungen der Ausleger-Einheiten einstellbar sind. Weitere Ziel-Winkelstellungen können beispielsweise größer als 20° sein, einen Winkelbetrag zwischen 20° und 40° einnehmen oder größer als 40° sein.An embodiment of the boom system according to claim 9 allows additional target angular positions without the need for further connection tabs are used. This can be achieved, for example, by the legs having further target openings which, when the angle arrangement of the legs is changed, are aligned such that further target angular positions of the boom units can be set. Further target angular positions may for example be greater than 20 °, occupy an angle between 20 ° and 40 ° or be greater than 40 °.

Die Verwendung von Verbindungs-Laschen gemäß Anspruch 10 erlaubt die Reduzierung des Fertigungs- und damit auch des Kostenaufwandes für die Verbindungs-Laschen. Die erste Verbindungs-Lasche kann ein Blatt mehr als die zweite Verbindungs-Lasche aufweisen, wobei die Verbindungs-Laschen derart versetzt zueinander angeordnet sein können, dass die Blätter der zweiten Verbindungs-Lasche zwischen den Blättern der ersten Verbindungs-Lasche angeordnet sind.The use of connection tabs according to claim 10 allows the reduction of manufacturing and thus also the cost of the connection tabs. The first connection tab may comprise one sheet more than the second connection tab, wherein the connection tabs may be offset from each other such that the sheets of the second connection tab are disposed between the sheets of the first connection tab.

Auslegersysteme gemäß den Ansprüchen 11 und 12 können als Verlängerung für einen Gittermast oder zur Anbindung eines Teleskopauslegerkopfes an einen Gittermast dienen.Jib systems according to claims 11 and 12 can serve as an extension for a lattice mast or for connecting a telescopic boom head to a lattice mast.

Ein Auslegersystem gemäß Anspruch 13 weist in der Ausgangs-Winkelstellung eine geringe Baugröße, insbesondere in Richtung der Längsachsen der Ausleger-Einheiten, auf. Ein Kran, an dem das Auslegersystem montiert ist, kann eine zulässige Gesamtlänge aufweisen und ist deshalb für den Straßenverkehr zugelassen.A boom system according to claim 13 has in the output angular position a small size, in particular in the direction of the longitudinal axes of the boom units, on. A crane on which the boom system is mounted may have a permissible overall length and is therefore approved for use on the road.

Mit einem Auslegersystem gemäß Anspruch 14 wird in der Ausgangs-Winkelstellung eine Schwenkbewegung der Ausleger-Einheiten zueinander entgegen einer beabsichtigten Schwenkrichtung verhindert.With a boom system according to claim 14, a pivoting movement of the boom units to each other against an intended pivoting direction is prevented in the initial angular position.

Bei einem Kran gemäß Anspruch 15 erfolgt eine Winkelverstellung eines Auslegersystems einfach, schnell und damit kostengünstig.In a crane according to claim 15, an angular adjustment of a boom system is simple, fast and therefore cost.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:

Fig. 1
eine Seitenansicht einer ersten Ausführungsform eines Auslegersystems in einer Ausgangs-Winkelstellung;
Fig. 2
eine schematische Darstellung einer Draufsicht auf zwei miteinander verbundene Verbindungs-Laschen des Ausle- gersystems gemäß Fig. 1;
Fig. 3 und 4
zu Fig. 1 ähnliche Seitenansichten des Auslegersystems in zwei verschiedenen Ziel-Winkelstellungen; und
Fig. 5 und 6
perspektivische Ansichten einer zweiten Ausführungsform von Verbindungs-Laschen eines Auslegersystems in einer Ausgangs-Winkelstellung und in einer Ziel- Winkelstellung.
An embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1
a side view of a first embodiment of a boom system in an initial angular position;
Fig. 2
a schematic representation of a plan view of two interconnected connection tabs of the Ausleg- gersystems according to Fig. 1 ;
3 and 4
to Fig. 1 similar side views of the boom system in two different target angular positions; and
FIGS. 5 and 6
perspective views of a second embodiment of connecting tabs of a boom system in an initial angular position and in a target angular position.

Ein in Fig. 1 dargestelltes Auslegersystem 1 weist zwei durch eine Schwenkeinheit 2 miteinander verbundene Ausleger-Einheiten 3, 4 auf, wobei beide Ausleger-Einheiten 3, 4 ein Gittermast sind. Es ist auch möglich, dass eine Ausleger-Einheit als Teleskopauslegerkopf ausgebildet ist.An in Fig. 1 illustrated boom system 1 comprises two by a pivot unit 2 interconnected boom units 3, 4, wherein both boom units 3, 4 are a lattice mast. It is also possible that a boom unit is designed as a telescopic boom head.

Jeder Ausleger-Einheit 3, 4 weist einen Untergurt 5, einen durch mindestens eine Strebe 6 mit dem Untergurt 5 verbundenen Obergurt 7, eine am Obergurt 7 angebrachte Verbindungs-Lasche 8, 8a mit mehreren Öffnungen 9 bis 12 und eine Längsachse 13, 13a auf. In der dargestellten Ausgangs-Winkelstellung des Auslegersystems 1 sind die beiden Längsachsen 13, 13a der Ausleger-Einheiten 3, 4 parallel.Each boom unit 3, 4 has a lower flange 5, an upper flange 7 connected to the lower flange 5 by at least one strut 6, a connecting tongue 8, 8a attached to the upper flange 7 with a plurality of openings 9 to 12 and a longitudinal axis 13, 13a , In the illustrated initial angular position of the boom system 1, the two longitudinal axes 13, 13 a of the boom units 3, 4 are parallel.

Der Untergurt 5 umfasst eine Schwenk-Lasche 14 mit einer Schwenk-Öffnung 15, wobei die Ausleger-Einheiten 3, 4 derart angeordnet sind, dass die Schwenk-Öffnungen 15 miteinander fluchten und durch einen Bolzen 16 miteinander verbunden sind. Die durch den Bolzen 16 miteinander verbundenen Schwenk-Laschen 14 bilden die Schwenkeinheit 2, die jeweils am Untergurt 5 der beiden Ausleger-Einheiten 3, 4 angebracht ist und eine Schwenkbewegung der beiden Ausleger-Einheiten 3, 4 in einer Schwenkrichtung 2a ermöglicht.The lower flange 5 comprises a pivoting lug 14 with a pivoting opening 15, wherein the boom units 3, 4 are arranged such that the pivoting openings 15 are aligned with each other and are connected to each other by a bolt 16. The interconnected by the bolt 16 pivot tabs 14 form the pivot unit 2, which is respectively mounted on the lower flange 5 of the two boom units 3, 4 and pivotal movement of the two boom units 3, 4 in a pivoting direction 2a allows.

Jede Verbindungs-Lasche 8, 8a weist zwei Schenkel 17, 18 auf, die in einem Winkel, insbesondere von kleiner als 90°, zueinander angeordnet sind. Die an einem Scheitelpunkt 19 der Verbindungs-Lasche 8, 8a vorgesehene Öffnung heißt Scheitelpunkts-Öffnung 9 und dient einer schwenkbaren Verbindung der Verbindungs-Lasche 8, 8a mit dem Obergurt 7 durch einen Bolzen 16. Die Öffnung 10 des ersten Schenkels 17 ist als Anfangs-Öffnung, die Öffnungen 11, 12 des zweiten Schenkels 18 als Ziel-Öffnungen bezeichnet.Each connection tab 8, 8a has two legs 17, 18, which are arranged at an angle, in particular of less than 90 ° to each other. The opening provided at a vertex 19 of the connection tab 8, 8a is called apex opening 9 and serves to pivotally connect the connection tab 8, 8a to the top flange 7 by a bolt 16. The opening 10 of the first leg 17 is initially Opening, the openings 11, 12 of the second leg 18 referred to as target openings.

In der Ausgangs-Winkelstellung sind die Verbindungs-Laschen 8, 8a derart angeordnet, dass sowohl die Anfangs-Öffnungen 10 der Verbindungs-Laschen 8, 8a als auch die Ziel-Öffnungen 11 bzw. 12 der Verbindungs-Laschen 8, 8a jeweils paarweise miteinander fluchten. Weiterhin sind die Verbindungs-Laschen 8, 8a durch ein in deren fluchtend angeordnete Anfangs-Öffnungen 10 eingestecktes Verbindungs-Element 20 miteinander verbunden. Da die Anfangs-Öffnungen 10 ebenso wie die Ziel-Öffnungen 11, 12 als Langlöcher ausgebildet sind, ist das in jeweils einem fluchtenden Öffnungspaar 10, 11, 12 eingesteckte Verbindungs-Element 20 bewegbar. Dazu muss das Verbindungs-Element 20 entlastet sein. Der Entlastungsvorgang wird im Weiteren noch erläutert.In the initial angular position, the connection tabs 8, 8a are arranged such that both the initial openings 10 of the connection tabs 8, 8a and the target openings 11 and 12 of the connection tabs 8, 8a in pairs with each other aligned. Furthermore, the connection tabs 8, 8a are connected to one another by a connecting element 20 inserted in their initially arranged openings 10 in alignment. Since the initial openings 10 as well as the target openings 11, 12 are formed as slots, in each case an aligned pair of openings 10, 11, 12 inserted connecting element 20 is movable. For this purpose, the connection element 20 must be relieved. The discharge process will be explained below.

Weiterhin weisen die Verbindungs-Laschen 8, 8a jeweils an dem ersten Schenkel 17 einen Anschlag 22 auf, der mindestens eine Nase 25 mit einer Gewindebohrung 26 und einem darin eingeschraubten Gewindestift 27 umfasst. Der Anschlag 22 liegt in der Ausgangs-Winkelstellung an einem Gabelkopf 28 des jeweils gegenüberliegenden Obergurtes 7 der jeweiligen Ausleger-Einheit 3, 4 an, so dass eine Schwenkbewegung der Ausleger-Einheiten 3, 4 entgegen der Schwenkrichtung 2a in der Ausgangs-Winkelstellung blockiert ist.Furthermore, the connection tabs 8, 8a respectively on the first leg 17 a stop 22 which comprises at least one nose 25 with a threaded bore 26 and a threaded pin 27 screwed therein. The stop 22 is in the initial angular position on a clevis 28 of the respective opposite upper flange 7 of the respective boom unit 3, 4, so that a pivoting movement of the boom units 3, 4 is blocked against the pivoting direction 2a in the initial angular position ,

Ein zentrischer Abstand A1 der Anfangs-Öffnung 10 von der Scheitelpunkts-Öffnung 9 ist kleiner als zentrische Abstände A2, A3 der Ziel-Öffnungen 11, 12 von der Scheitelpunkts-Öffnung 9. Durch eine Variation der Abstände A1, A2, A3 können die resultierenden Ziel-Winkelstellungen eingestellt werden.A central distance A1 of the initial opening 10 from the apex opening 9 is smaller than centric distances A2, A3 of the target openings 11, 12 from the apex opening 9. By varying the distances A1, A2, A3, the resulting Target angular positions can be set.

In der Ausgangs-Winkelstellung weist das Auslegersystem 1 eine horizontale Ausdehnung A4 auf, die durch die Baugröße der Verbindungs-Laschen 8, 8a bestimmt ist. Dabei ist die Ausdehnung A4 kleiner als ein zulässiger Höchstwert, so dass ein Kran mit einem daran montierten Auslegersystem 1 eine für den Straßentransport zulässige Gesamtlänge nicht überschreitet und damit für den Straßentransport zugelassen ist.In the initial angular position, the boom system 1 has a horizontal extent A4, which is determined by the size of the connection tabs 8, 8a. In this case, the extent A4 is smaller than a maximum permissible value, so that a crane with a boom system 1 mounted thereon does not exceed an overall length permissible for road transport and is therefore permitted for road transport.

Im Folgenden wird ein Verfahren zur Winkelverstellung des Auslegersystems 1 erläutert. Dazu wird ausgehend von dem Auslegersystem 1 in der Ausgangs-Winkelstellung gemäß Fig. 1 das Verbindungs-Element 20 durch Anheben oder Abstützen der abzuwinkelnden Ausleger-Einheit 3 entlastet. Das Anheben kann beispielsweise mittels eines nicht dargestellten Hilfskrans, Staplers oder einer sonstigen Hebemaschine erfolgen. Auch das Anheben der Ausleger-Einheit 3 durch eine am Kran befindliche Seilwinde ist möglich. Darüber hinaus kann die Ausleger-Einheit 3 mit einem der Verbindungs-Lasche 8 gegenüberliegenden Ende auf dem Boden abgestützt werden.In the following, a method for angular adjustment of the boom system 1 will be explained. For this purpose, starting from the boom system 1 in the output angular position according to Fig. 1 relieves the connection element 20 by lifting or supporting the angled boom unit 3. The lifting can be done for example by means of an auxiliary crane, forklift, or other hoist, not shown. Also, the raising of the boom unit 3 by a winch located on the crane is possible. In addition, the boom unit 3 can be supported on the ground with an end opposite the connection tab 8.

Durch die Anschläge 22 wird eine Schwenkbewegung der Ausleger-Einheit 3 entgegen der Schwenkrichtung 2a gesperrt. Da die Anfangs-Öffnungen 10 als Langlöcher ausgebildet sind, kann das Verbindungs-Element 20 im entlasteten Zustand einfach und per Hand aus den fluchtenden Anfangs-Öffnungen 10 der Verbindungs-Laschen 8, 8a entnommen werden. Anschließend wird mit dem Verbindungs-Element 20 eines der Paare der fluchtenden Ziel-Öffnungen 11 oder 12 verbunden. Durch Auswahl des zu verbindenden Paares der Ziel-Öffnungen 11 oder 12 wird die daraus resultierende Ziel-Winkelstellung festgelegt.By the stops 22, a pivoting movement of the boom unit 3 is locked against the pivoting direction 2a. Since the initial openings 10 are formed as slots, the connecting element 20 in the unloaded state easily and by hand from the aligned Initial openings 10 of the connection tabs 8, 8a are removed. Subsequently, one of the pairs of aligned target openings 11 or 12 is connected to the connection element 20. By selecting the pair of target ports 11 or 12 to be connected, the resulting target angular position is determined.

Nachdem das Paar fluchtender Ziel-Öffnungen 11 oder 12 durch das Verbindungs-Element 20 miteinander verbunden ist, wird das Verbindungs-Element 20 wieder belastet, indem die angehobene bzw. abgestützte Ausleger-Einheit 3 wieder abgelassen bzw. freigegeben wird. Dadurch öffnet sich die Verbindung der Verbindungs-Laschen 8, 8a an den Anfangs-Öffnungen 10, wobei die Ausleger-Einheiten 3, 4 um die Schwenkeinheit 2 in der Schwenkrichtung 2a so weit schwenken, bis die beiden Scheitelpunkts-Öffnungen 9 und die durch das Verbindungs-Element 20 verbundenen Ziel-Öffnungen 11, 12 auf einer gemeinsamen Geraden 23, 24 angeordnet sind (siehe Fig. 3 und 4).After the pair of aligned target openings 11 or 12 are connected to each other by the connection member 20, the connection member 20 is again loaded by releasing the raised boom unit 3 again. This opens the connection of the connection tabs 8, 8a at the initial openings 10, wherein the boom units 3, 4 about the pivot unit 2 in the pivoting direction 2a so far pivot until the two vertex openings 9 and through the Connection element 20 connected target openings 11, 12 are arranged on a common line 23, 24 (see Fig. 3 and 4 ).

Wie in Fig. 2 schematisch dargestellt, weist die Verbindungs-Lasche 8 drei Blätter 21 und die Verbindungs-Lasche 8a zwei Blätter 21 auf. Die Blätter 21 sind in Richtung des ersten Verbindungs-Elementes 20 parallel und beabstandet zueinander angeordnet. Dabei sind die Verbindungs-Laschen 8, 8a derart versetzt zueinander angeordnet, dass die Blätter 21 der Verbindungs-Lasche 8a zwischen den Blättern 21 der Verbindungs-Lasche 8 angeordnet sind. Die Geometrie der Blätter 21 ist für beide Verbindungs-Laschen 8, 8a identisch, wodurch der Fertigungsaufwand und damit die Herstellkosten für die Verbindungs-Laschen 8, 8a reduziert werden. Die Verbindungs-Laschen 8, 8a und damit deren Blätter 21 können auch verschiedene Geometrien aufweisen.As in Fig. 2 schematically illustrated, the connection tab 8 has three leaves 21 and the connecting tab 8a two leaves 21 on. The leaves 21 are arranged parallel to and spaced from one another in the direction of the first connecting element 20. In this case, the connection tabs 8, 8a are arranged offset from one another in such a way that the leaves 21 of the connection tab 8a are arranged between the leaves 21 of the connection tab 8. The geometry of the blades 21 is identical for both connecting straps 8, 8a, which reduces the production costs and thus the manufacturing costs for the connecting straps 8, 8a. The connection tabs 8, 8a and thus their leaves 21 may also have different geometries.

Das Auslegersystem 1 ist in Fig. 3 in einer ersten Ziel-Winkelstellung und in Fig. 4 in einer zweiten Ziel-Winkelstellung dargestellt. Die erste Ziel-Winkelstellung zeichnet sich dadurch aus, dass die Längsachsen 13, 13a der Ausleger-Einheiten 3, 4 einen Winkel von 20° und in der zweiten Ziel-Winkelstellung einen Winkel von 40° einschließen.The boom system 1 is in Fig. 3 in a first target angular position and in Fig. 4 shown in a second target angular position. The first target angular position is characterized in that the longitudinal axes 13, 13a of the boom units 3, 4 enclose an angle of 20 ° and in the second target angular position an angle of 40 °.

Während in der 20°-Winkelstellung das Verbindungs-Element 20 in den Zielöffnungen 11 angeordnet ist, verbindet das Verbindungs-Element 20 in der 40°-Winkelstellung die Ziel-Öffnungen 12. In der 20°-Winkelstellung sind die Scheitelpunkts-Öffnungen 9 sowie die durch das Verbindungs-Element 20 miteinander verbundenen Ziel-Öffnungen 11 auf einer Geraden 23 und in der 40°-Winkelstellung die beiden Scheitelpunkts-Öffnungen 9 sowie die mittels des Verbindungs-Elementes 20 miteinander verbundenen Ziel-Öffnungen 12 auf einer Geraden 24 angeordnet.While in the 20 ° angular position, the connecting element 20 is arranged in the target openings 11, the connecting element 20 connects in the 40 ° -Winkelstellung the target openings 12. In the 20 ° -Winkelstellung are the apex openings 9 and the target openings 11 connected to one another by the connection element 20 are arranged on a straight line 23 and in the 40 ° angular position the two vertex openings 9 and the target openings 12 connected to one another by means of the connection element 20 on a straight line 24.

Die Fig. 5 und 6 zeigen eine weitere Ausführungsform von Verbindungs-Laschen 29, 29a des Auslegersystems 1. Komponenten, die denjenigen entsprechen, die vorstehend unter Bezugnahme auf die Fig. 1 bis 4 bereits erläutert wurden, tragen die gleichen Bezugsziffern und werden nicht nochmals im Einzelnen diskutiert.The Fig. 5 and 6 show another embodiment of connecting tabs 29, 29a of the cantilever system 1. Components which correspond to those described above with reference to FIGS Fig. 1 to 4 already described, bear the same reference numbers and will not be discussed again in detail.

Wesentlicher Unterschied zu der ersten Ausführungsform des Auslegersystems 1 ist die Gestaltung des Verbindungs-Elementes als Bolzen 30 mit Bajonett-Verschluss. Dazu ist an einem der äußeren Blätter 21 der Verbindungs-Lasche 29 eine Blende 31 angebracht, so dass die Öffnungen 10, 11, 12 durch jeweils einen im Wesentlichen rechteckigen Ausschnitt 32 begrenzt sind. Der Bolzen 30 ist in der Ziel-Öffnung 12 angeordnet, wobei die Verbindungs-Laschen 29, 29a in Fig. 5 in der Ausgangs-Winkelstellung und in Fig. 6 in der 40°-Winkelstellung dargestellt sind.The essential difference from the first embodiment of the boom system 1 is the design of the connecting element as a bolt 30 with bayonet closure. For this purpose, an aperture 31 is attached to one of the outer leaves 21 of the connection tab 29, so that the openings 10, 11, 12 are bounded by a respective substantially rectangular cutout 32. The bolt 30 is disposed in the target opening 12, wherein the connection tabs 29, 29 a in Fig. 5 in the initial angular position and in Fig. 6 are shown in the 40 ° -Winkelstellung.

Der Anschlag 33 ist bei dieser Ausführungsform durch abgerundete, konkave Anlageflächen 34 gebildet, die an dem ersten Schenkel 17 der Verbindungs-Lasche 29a vorgesehen sind.The stop 33 is formed in this embodiment by rounded, concave bearing surfaces 34 which are provided on the first leg 17 of the connecting lug 29 a.

Es ist weiterhin denkbar, Verbindungs-Laschen zu verwenden, wobei jeweils die Winkelanordnung der Schenkel zueinander veränderlich ausgebildet ist, beispielsweise indem an dem Scheitelpunkt ein Schwenkgelenk vorgesehen ist. Darüber hinaus könnten die schwenkbar miteinander verbundenen Schenkel einer Verbindungs-Lasche weitere Ziel-Öffnungen aufweisen, die bei einer veränderten Winkelanordnung der Schenkel in der Ausgangs-Winkelstellung des Auslegersystems paarweise miteinander fluchten, so dass weitere Ziel-Winkelstellungen der Verbindungs-Elemente mit nur einer Verbindungs-Lasche ermöglicht werden. Es ist auch möglich, Verbindungs-Laschen einzusetzen, deren Winkelanordnungen zwischen den Schenkeln sich unterscheiden. Mit diesen Maßnahmen können die zentrischen Abstände A1 bis A3 zwischen den fluchtenden Öffnungen derart beeinflusst werden, dass verschiedene Winkelstellungen einstellbar sind.It is also conceivable to use connection tabs, wherein in each case the angular arrangement of the legs is mutually variable, for example by a pivot joint is provided at the apex. In addition, the pivotally interconnected legs of a connecting tab could have further target openings, which are aligned with each other in a changed angular arrangement of the legs in the output angular position of the boom system with each other, so that further target angular positions of the connecting elements with only one connection -Lasche be enabled. It is also possible to use connection tabs whose angular arrangements differ between the legs. With these measures, the central distances A1 to A3 between the aligned openings can be influenced in such a way that different angular positions can be set.

Claims (15)

Verfahren zur Winkelverstellung eines Auslegersystems (1) eines Krans, umfassend die Schritte - Bereitstellen von zwei Ausleger-Einheiten (3, 4) des Auslegersystems (1), die bezüglich ihrer Längsachsen (13, 13a) in einer Winkelstellung zueinander veränderlich anordenbar sind, - Anordnen von an den Ausleger-Einheiten (3, 4) angebrachten Verbindungs-Laschen (8, 8a; 29, 29a) derart, dass in einer Ausgangs-Winkelstellung die Längsachsen (13, 13a) der Ausleger-Einheiten (3, 4) parallel sind, Anfangs-Öffnungen (10) und Ziel-Öffnungen (11, 12) der Verbindungs-Laschen (8, 8a; 29, 29a) paarweise zum Durchstecken eines die Ausleger-Einheiten (3, 4) verbindenden Verbindungs-Elements (20; 30) miteinander fluchten, wobei die fluchtenden Anfangs-Öffnungen (10) mit dem Verbindungs-Element (20; 30) verbunden sind, - Entlasten des die fluchtenden Anfangs-Öffnungen (10) verbindenden Verbindungs-Elements (20; 30), - Entfernen des ersten Verbindungs-Elements (20; 30), - Verbinden eines Paares der fluchtenden Ziel-Öffnungen (11; 12) mit dem Verbindungs-Element (20; 30), und - Anordnen der Ausleger-Einheiten (3, 4) in einer von der Ausgangs-Winkelstellung verschiedenen Ziel-Winkelstellung. A method for angular adjustment of a boom system (1) of a crane comprising the steps - Providing two boom units (3, 4) of the boom system (1), which are mutually arranged with respect to their longitudinal axes (13, 13a) in an angular position, Arranging connection lugs (8, 8a, 29, 29a) attached to the boom units (3, 4) such that in an initial angular position the longitudinal axes (13, 13a) of the boom units (3, 4) are parallel, initial openings (10) and target openings (11, 12) of the connecting tabs (8, 8a, 29, 29a) in pairs for the passage of a boom unit (3, 4) connecting the connecting element (20 30) are aligned with each other, wherein the aligned initial openings (10) with the connection element (20; 30) are connected, Relieving the connecting element (20, 30) connecting the aligned initial openings (10), Removing the first connection element (20; 30), - Connecting a pair of the aligned target openings (11; 12) with the connection element (20; 30), and - Arranging the boom units (3, 4) in a different from the initial angular position target angular position. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Anordnen der Ausleger-Einheiten (3, 4) in einer von zwei möglichen Ziel-Winkelstellungen, insbesondere in einer 20°-Stellung oder in einer 40°-Stellung, durch Verbinden eines Paares der fluchtenden Ziel-Öffnungen (11; 12) erfolgt.A method according to claim 1, characterized in that arranging the boom units (3, 4) in one of two possible target angular positions, in particular in a 20 ° position or in a 40 ° position, by connecting a pair of the aligned target openings (11; 12). Verfahren nach einem der vorgenannten Ansprüche, gekennzeichnet durch die Winkelverstellung der Ausleger-Einheiten (3, 4) durch Schwenken um eine gemeinsame Schwenkeinheit (2).Method according to one of the preceding claims, characterized by the angular adjustment of the boom units (3, 4) by pivoting about a common pivoting unit (2). Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass ein Wechseln des Verbindungs-Elements (20; 30) von Hand möglich ist.Method according to one of the preceding claims, characterized in that a change of the connecting element (20; 30) by hand is possible. Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass das Entlasten des Verbindungs-Elements (20; 30) durch Anheben oder Abstützen der abzuwinkelnden Ausleger-Einheit (3) erfolgt.Method according to one of the preceding claims, characterized in that the unloading of the connecting element (20; 30) takes place by lifting or supporting the angled boom unit (3). Winkelverstellbares Auslegersystem (1) eines Krans, wobei - das Auslegersystem (1) zwei miteinander verbundene Ausleger-Einheiten (3, 4) mit jeweils einer Längsachse (13; 13a) aufweist, - Verbindungs-Laschen (8; 8a; 29, 29a) zur winkelverstellbaren Verbindung der Ausleger-Einheiten (3, 4) vorgesehen sind, - jede Verbindungs-Lasche (8, 8a; 29, 29a) zwei Schenkel (17, 18) aufweist, die in einem Winkel zueinander angeordnet sind, - der erste Schenkel (17) eine Anfangs-Öffnung (10) zur Verbindung der Verbindungs-Laschen (8, 8a; 29, 29a) in einer Ausgangs-Winkelstellung aufweist und - der zweite Schenkel (18) mehrere Ziel-Öffnungen (11, 12) zur Verbindung der Verbindungs-Laschen (8, 8a; 29, 29a) in verschiedenen Ziel-Winkelstellungen aufweist dadurch gekennzeichnet, dass - in der Ausgangs-Winkelstellung die Längsachsen (13, 13a) der Ausleger-Einheiten (3, 4) parallel sind, die Öffnungen (10, 11, 12) der beiden Schenkel (17, 18) paarweise zum Durchstecken eines die Ausleger-Einheiten (3, 4) verbindenden Verbindungs-Elements (20; 30) miteinander fluchten und die Anfangs-Öffnungen (10) mit dem Verbindungs-Element (20; 30) verbunden sind. Angle adjustable boom system (1) of a crane, wherein - The boom system (1) has two interconnected boom units (3, 4) each having a longitudinal axis (13; 13a), Connecting lugs (8; 8a; 29, 29a) are provided for the angle-adjustable connection of the boom units (3, 4), each connecting lug (8, 8a, 29, 29a) has two legs (17, 18) which are arranged at an angle to one another, - The first leg (17) has an initial opening (10) for connecting the connecting tabs (8, 8a, 29, 29a) in an initial angular position, and - The second leg (18) has a plurality of target openings (11, 12) for connecting the connecting tabs (8, 8a, 29, 29a) in different target angular positions characterized in that - In the initial angular position, the longitudinal axes (13, 13 a) of the boom units (3, 4) are parallel, the openings (10, 11, 12) of the two legs (17, 18) in pairs for the passage of a boom units (3, 4) connecting the connecting element (20; 30) are aligned with each other and the initial openings (10) with the connecting element (20; 30) are connected. Auslegersystem nach Anspruch 6, dadurch gekennzeichnet, dass der zweite Schenkel (18) zwei Ziel-Öffnungen (11, 12) aufweist.Jib system according to claim 6, characterized in that the second leg (18) has two target openings (11, 12). Auslegersystem nach einem der Ansprüche 6 bis 7, dadurch gekennzeichnet, dass ein Abstand (A1) der Anfangs-Öffnung (10) von der Scheitelpunkts-Öffnung (9) kleiner ist als Abstände (A2, A3) der Ziel-Öffnungen (11, 12) von der Scheitelpunkts-Öffnung (9).A boom system according to any one of claims 6 to 7, characterized in that a distance (A1) of the initial opening (10) from the apex opening (9) is smaller than distances (A2, A3) of the target openings (11, 12 ) from the apex opening (9). Auslegersystem nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Winkelanordnung der Schenkel (17, 18) zueinander veränderlich ausgebildet ist.Jib system according to one of claims 6 to 8, characterized in that the angular arrangement of the legs (17, 18) is designed to be mutually variable. Auslegersystem nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Verbindungs-Laschen (8, 8a; 29, 29a) mehrere Blätter (21) aufweisen, die in Richtung des Verbindungs-Elements (20; 30) zueinander parallel und beabstandet angeordnet sind.A jib system according to any one of claims 6 to 9, characterized in that the connecting lugs (8, 8a; 29, 29a) have a plurality of blades (21) arranged parallel to each other and spaced apart in the direction of the connecting element (20; 30) are. Auslegersystem nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass mindestens eine Ausleger-Einheit (3, 4) eine Gittermast ist.Jib system according to one of claims 6 to 10, characterized in that at least one boom unit (3, 4) is a lattice mast. Auslegersystem nach einem der Ansprüche 6 bis 11, dadurch gekennzeichnet, dass eine Ausleger-Einheit (3, 4) ein Teleskopauslegerkopf ist.A boom system according to any one of claims 6 to 11, characterized in that a boom unit (3, 4) is a telescopic boom head. Auslegersystem nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass eine Ausdehnung (A4) parallel zu den Längsachsen (13; 13a) in der Ausgangs-Winkelstellung kleiner ist als ein zulässiger Höchstwert.Jib system according to one of claims 6 to 12, characterized in that an extension (A4) parallel to the longitudinal axes (13; 13a) in the initial angular position is smaller than a maximum permissible value. Auslegersystem nach einem der Ansprüche 6 bis 13, dadurch gekennzeichnet, dass mindestens eine Verbindungs-Lasche (8; 8a; 29, 29a) einen Anschlag (22; 33) zum Anliegen in der Ausgangs-Winkelstellung an einem Gabelkopf (28) der jeweils gegenüberlegend angeordneten Ausleger-Einheit (3, 4) aufweist.A boom system according to any one of claims 6 to 13, characterized in that at least one connecting lug (8; 8a; 29, 29a) has a stop (22; 33) for abutment in the initial angular position on a clevis (28) of each opposite arranged boom unit (3, 4). Kran mit einem Auslegersystem nach einem der Ansprüche 6 bis 14.Crane with a boom system according to one of claims 6 to 14.
EP10162228.0A 2009-05-22 2010-05-07 Angle adjustment of a jib system Active EP2253576B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009022262A DE102009022262A1 (en) 2009-05-22 2009-05-22 Angular adjustment of a boom system

Publications (2)

Publication Number Publication Date
EP2253576A1 true EP2253576A1 (en) 2010-11-24
EP2253576B1 EP2253576B1 (en) 2013-08-21

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EP10162228.0A Active EP2253576B1 (en) 2009-05-22 2010-05-07 Angle adjustment of a jib system

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US (1) US8640896B2 (en)
EP (1) EP2253576B1 (en)
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DE (1) DE102009022262A1 (en)

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DE102015119379B3 (en) 2015-11-10 2017-03-30 Terex Global Gmbh Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane
DE102015119381B3 (en) * 2015-11-10 2017-04-27 Terex Global Gmbh Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane
US10640340B2 (en) 2015-11-24 2020-05-05 Terex Global Gmbh Mobile crane for angling a main jib extension relative to a main jib of a mobile crane

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CN102874695B (en) * 2012-10-15 2015-04-22 中联重科股份有限公司 Goose head frame and engineering equipment
JP6647987B2 (en) * 2016-08-05 2020-02-14 住友重機械建機クレーン株式会社 Crane strut
US10569415B2 (en) 2016-08-31 2020-02-25 United States Of America As Represented By The Administrator Of Nasa Tension stiffened and tendon actuated manipulator
JP6834789B2 (en) * 2017-06-05 2021-02-24 コベルコ建機株式会社 How to raise struts, and cranes
NL2019511B1 (en) * 2017-09-08 2019-03-19 Mammoet Eng B V Crane comprising first mast with tiltable first mast upper part
US20190186135A1 (en) * 2017-12-18 2019-06-20 Tiffin Scenic Studios, Inc. Connector system for trusses
CN114229721A (en) * 2022-01-24 2022-03-25 徐州重型机械有限公司 Crane boom and its luffing method and crane

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Publication number Priority date Publication date Assignee Title
DE102015119379B3 (en) 2015-11-10 2017-03-30 Terex Global Gmbh Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane
DE102015119381B3 (en) * 2015-11-10 2017-04-27 Terex Global Gmbh Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane
WO2017081021A1 (en) 2015-11-10 2017-05-18 Terex Cranes Germany Gmbh Mobile crane and method for angling a main jib extension relative to a main jib of a mobile crane
US10640339B2 (en) 2015-11-10 2020-05-05 Terex Global Gmbh Mobile crane and method for angling a main jib extension relative to a main jib of a mobile crane
US10647553B2 (en) 2015-11-10 2020-05-12 Terex Global Gmbh Mobile crane and method for angling a main jib extension relative to a main jib of a mobile crane
US10640340B2 (en) 2015-11-24 2020-05-05 Terex Global Gmbh Mobile crane for angling a main jib extension relative to a main jib of a mobile crane
US10781083B2 (en) 2015-11-24 2020-09-22 Terex Global Gmbh Mobile crane and method for angling a main boom extension in relation to a main boom of a mobile crane

Also Published As

Publication number Publication date
CN101891122A (en) 2010-11-24
EP2253576B1 (en) 2013-08-21
US20100294738A1 (en) 2010-11-25
US8640896B2 (en) 2014-02-04
DE102009022262A1 (en) 2010-11-25
CN101891122B (en) 2014-09-17

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