EP2137093B1 - Method for installing an auxiliary boom to a main boom on a mobile crane - Google Patents

Method for installing an auxiliary boom to a main boom on a mobile crane Download PDF

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Publication number
EP2137093B1
EP2137093B1 EP08748782.3A EP08748782A EP2137093B1 EP 2137093 B1 EP2137093 B1 EP 2137093B1 EP 08748782 A EP08748782 A EP 08748782A EP 2137093 B1 EP2137093 B1 EP 2137093B1
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EP
European Patent Office
Prior art keywords
boom
luffing
auxiliary
support
supports
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.)
Active
Application number
EP08748782.3A
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German (de)
French (fr)
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EP2137093A1 (en
Inventor
Frank Conrad
Jürgen Appel
Peter Orfey
Roland Kuhn
Michael Martin
Udo Biwer
Klaus Conrad
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.)
Terex Global GmbH
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Terex Cranes Germany GmbH
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Publication date
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Publication of EP2137093A1 publication Critical patent/EP2137093A1/en
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Publication of EP2137093B1 publication Critical patent/EP2137093B1/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
    • B66C23/82—Luffing gear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a method for equipping a jib arranged on the main boom of a mobile crane.
  • the disassembly must be carried out in the reverse manner, d. H. the lower luffing support is placed on a pole by the crane to be equipped, the crane operator hangs the lifting lugs of the additional crane after hitting the lower luffing support and raises the lower luffing support briefly, so that the rod is free. The bar is then guided parallel to the lowering of the lower luffing support by a rope by hand, so that it is deposited together with the lower luffing support back into transport position.
  • the object of the invention is therefore to provide a way with which a faster and safe assembly and disassembly of adjustable jibs can be achieved.
  • the stop screws are used during disassembly also at the same time that the jack 20 is fixed in its position such that the connecting rod strand 13 is taken over the fork shape of the jack 20 again.
  • This connecting rod strand 13 pulls the Aufstellbock 20 when upgrading the tiltable jib with high until it comes to abutment against the stop means. Accordingly, when dismantling the Aufstellbock 20 by discharging the connecting rod strand 13 and taken into its transport position ( FIG. 6 ) brought.

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

Description

Die Erfindung betrifft ein Verfahren zum Rüsten eines am Hauptausleger eines Mobilkrans angeordneten Hilfsauslegers.The invention relates to a method for equipping a jib arranged on the main boom of a mobile crane.

Hilfsausleger müssen derzeit durch Einsatz eines Zusatzkranes aufgerichtet werden. Betrachtet man den Aufrüstvorgang, so läuft dieser folgendermaßen ab:

  • Zunächst wird die untere Wippstütze durch einen Zusatzkran angehoben und auf einer Stange abgestellt. Der Kranbediener muß dann auf dieser angehobenen Wippstütze entlang laufen, um die Anschlagmittel des Zusatzkranes auszuhängen. Diese Tätigkeit ist nicht ungefährlich, weil die Wippstütze in der angehobenen Position sich bis zu 6 m über dem Erdboden befinden kann. Nach diesem Aushängen der Anschlagmittel des Zusatzkranes kann der eigentliche Aufrüstvorgang, den der aufzurichtende Kran ausführt, fortgesetzt werden.
Jibs currently have to be erected by using an additional crane. Looking at the upgrade process, it works as follows:
  • First, the lower luffing support is lifted by an additional crane and parked on a pole. The crane operator must then walk along this raised rocker support to unhook the lifting gear of the auxiliary crane. This operation is not without risk, because the rocking support in the raised position can be up to 6 m above the ground. After this detachment of the lifting gear of the auxiliary crane, the actual upgrade process, which is carried out by the crane to be erected, can be continued.

Das Abrüsten muss in umgekehrter Weise vorgenommen werden, d. h. die untere Wippstütze wird vom abzurüstenden Kran auf einer Stange abgelegt, der Kranbediener hängt nach dem Begehen der unteren Wippstütze die Anschlagmittel des Zusatzkranes ein und hebt die untere Wippstütze kurz an, sodass die Stange frei geht. Die Stange wird dann parallel zum Ablassen der unteren Wippstütze über ein Seil von Hand geführt, sodass sie sich zusammen mit der unteren Wippstütze wieder in Transportstellung ablegt.The disassembly must be carried out in the reverse manner, d. H. the lower luffing support is placed on a pole by the crane to be equipped, the crane operator hangs the lifting lugs of the additional crane after hitting the lower luffing support and raises the lower luffing support briefly, so that the rod is free. The bar is then guided parallel to the lowering of the lower luffing support by a rope by hand, so that it is deposited together with the lower luffing support back into transport position.

Diese Arbeiten erfordern also einerseits einen Zusatzkran und andererseits ein nicht ungefährliches Arbeiten des Kranbedieners auf der Wippstütze.This work therefore requires, on the one hand, an additional crane and, on the other hand, non-hazardous working of the crane operator on the luffing support.

In US 4,473,214 ist ein Verfahren zum Rüsten eines am Hauptausleger eines Mobilkrans angeordneten Hilfsauslegers gemäß dem Oberbegriff des Anspruchs 1 offenbart.In US 4,473,214 a method for equipping an arranged on the main boom of a mobile crane jib according to the preamble of claim 1 is disclosed.

Aufgabe der Erfindung ist es daher, eine Möglichkeit zu schaffen, mit der ein schnelleres und sicheres Auf- und Abrüsten von verstellbaren Hilfsauslegern erreicht werden kann.The object of the invention is therefore to provide a way with which a faster and safe assembly and disassembly of adjustable jibs can be achieved.

Gelöst wird diese Aufgabe mit den Merkmalen des Anspruchs 1.This problem is solved with the features of claim 1.

Die Erfindung, insbesondere die Schrittfolge des Rüstens (bzw. Abrüstens) soll nachfolgend unter Bezug auf die Darstellung in den Zeichnungen näher erläutert werden, wobei diese schematisch einen Mobilenkran in den einzelnen Rüstpositionen zeigen.The invention, in particular the step sequence of setting (or disarming) will be explained in more detail below with reference to the representation in the drawings, which show schematically a mobile crane in the individual setup positions.

Im Einzelnen ergibt sich aus:

  • Fig. 1
    Der verstellbare Hilfsausleger 3 wird beispielsweise über einen Adapter 4 an den Kopf 6 des Hauptauslegers 5 angebaut, wobei allerdings der Adapter für die Erfüllung der Aufgabe nicht zwingend nötig ist. Der Anbau erfolgt durch geeignetes Hilsmittel, z.B. Hilfskran oder Stapler. Die beiden Wippstützen 8 und 9 liegen dabei aus Transportgründen flach auf dem Hilfsausleger 3.
    Das Hubseil 14 wird vom Haupthubwerk 15 des Mobilkranes abgewickelt und mit der Verbindungsstange 13 verbunden. Diese Stange ist dauerhaft mit der unteren Wippstütze 9 verbunden.
    Beide Wippstützen sind untereinander durch ein Zugkraftgliedstrang 17 (Fig. 2) verbunden. Durch Aufwickeln des Hubseiles 14 auf das Hubwerk 15 richten sich jetzt die Wippstützen 8 und 9 auf (Fig. 2).
    Anschließend wird die Verbindungsstange 13 mit der fliegenden Traverse 11 verbunden (Fig. 3). Wird das Hubseil 14 abgewickelt, richtet sich die Traverse 11 entlang einer Linie von der festen Traverse 12 zur Spitze 18 der unteren Wippstütze 9 aus. Der Flaschenzug 19 ist gespannt. Das Hubseil 14 kann in dieser Lage von der Verbindunsstange 13 entkoppelt werden.
  • In Fig. 4 ist der nächste Arbeitsschritt dargestellt.
    Der Hauptausleger 5 wird über den Wippzylinder 7 angehoben. Gleichzeitig wird das Verstellhubwerk 16 abgewickelt, so dass sich der Abstand zwischen fliegender Traverse 11 und fester Traverse 12 vergrößert. Abschließend kann ab einer vorher festgelegten Hauptauslegerwinkelstellung das Versteilhubwerk 16 wieder aufgewickelt werden, so dass sich der Abstand zwischen fliegender Traverse 11 und fester Traverse 12 verkleinert. Dadurch hebt sich der verstellbare Hilfsausleger 3 vom Boden ab, da er mittels eines weiteren Zugkraftgliedstranges 10 mit der oberen Wippstütze 8 verbunden ist (Fig. 5).
  • Figur 6
    Der verstellbare Hilfsausleger 3 wird über einen Adapter 4 an den Kopf des Hauptauslegers 5 angebaut (der Adapter ist für die Erfüllung der Aufgabe nicht zwingend nötig). Der Anbau erfolgt durch geeignetes Hilfsmittel, z. B. Hilfskran oder Stapler. Die beiden Wippstützen 8 und 9 liegen dabei aus Transportgründen flach auf dem Hilfsausleger 3. Das Hubseil 14 wird vom Haupthubwerk 15 des Mobilkranes abgewickelt und mit dem mehrgliedrigen Verbindungsstangenstrang 13 verbunden. Dieser Strang ist dauerhaft mit der unteren Wippstütze 9 verbunden. Beide Wippstützen sind untereinander durch einen Zugkraftgliedstrang 17 verbunden.
  • Figur 7
    Durch Aufwickeln des Hubseiles 14 auf das Hubwerk 15 beginnt sich der Aufstellbock 20 selbst aufzurichten, der Verbindungsstangenstrang 13 beginnt sich zunächst rechts vom Aufstellbock 20, dann auch links vom Aufstellbock 20 zu spannen, bis auch die untere Wippstütze 9 angehoben wird.
  • Figur 8
    Das Haupthubwerk 15 wickelt weiter auf, der Zugkraftgliedstrang 17 zwischen den Wippstützen 8 und 9 beginnt sich zu spannen. Der Aufstellbock 20 wird in seiner Lage nach hinten durch die Anschlagschrauben am Zurückfallen gehindert.
  • Figur 9
    Der Verbindungsstangenstrang 13 ist in seiner Endlage vor dem Haupthubwerk 15 angelangt, die Wippstützen 8 und 9 stehen in Endstellung, der Arbeitsgang ist beendet.
    Das Abrüsten erfolgt in umgekehrter Reihenfolge.
  • Figur 10
    Diese Figur zeigt ein Ausführungsbeispiel für den Aufstellbock 20, und zwar besteht dieser aus einer Schweißkonstruktion, die drehbar (schwenkbar) auf der unteren Wippstütze gelagert ist. An den Lagerfüßen sind Anschlagmittel vorgesehen, die ein Umschlagen des Aufstellbockes verhindern. Am oberen Ende des Aufstellbockes befindet sich eine Gabel, in der der vorher beschriebene Verbindungsstangenstrang 13 - wie aus den Figuren 6 bis 9 ersichtlich - abgelegt werden kann.
In detail it follows:
  • Fig. 1
    The adjustable jib 3 is grown, for example via an adapter 4 to the head 6 of the main boom 5, although the adapter for the fulfillment of the task is not absolutely necessary. The cultivation is carried out by suitable means, eg auxiliary crane or forklift. The two rocker supports 8 and 9 are flat for transport reasons on the jib. 3
    The hoist rope 14 is unwound from the main lift 15 of the mobile crane and connected to the connecting rod 13. This rod is permanently connected to the lower rocker support 9.
    Both rocker supports are interconnected by a traction member strand 17 ( Fig. 2 ) connected. By winding the hoisting rope 14 on the hoist 15 now the rocking supports 8 and 9 are directed to ( Fig. 2 ).
    Subsequently, the connecting rod 13 is connected to the flying crosshead 11 ( Fig. 3 ). When the hoist rope 14 is unwound, the cross member 11 is aligned along a line from the fixed cross member 12 to the tip 18 of the lower rocker support 9. The pulley 19 is stretched. The hoist rope 14 can be decoupled from the Verbindunsstange 13 in this position.
  • In Fig. 4 the next step is shown.
    The main boom 5 is raised above the luffing cylinder 7. At the same time the Verstellhubwerk 16 is unwound, so that the distance between the flying crosshead 11 and fixed cross member 12 increases. Finally, the Verstellhubwerk 16 can be wound up again from a predetermined main boom angle position, so that the distance between the flying traverse 11 and fixed crossbar 12 is reduced. As a result, the adjustable jib 3 lifts off from the ground, since it is connected by means of another Zugkraftgliedstranges 10 with the upper rocker support 8 ( Fig. 5 ).
  • FIG. 6
    The adjustable jib 3 is attached via an adapter 4 to the head of the main boom 5 (the adapter is not absolutely necessary for the fulfillment of the task). The cultivation takes place by suitable aids, z. B. auxiliary crane or forklift. For reasons of transport, the two rocker supports 8 and 9 lie flat on the auxiliary extension arm 3. The hoist cable 14 is unwound from the main lifting gear 15 of the mobile crane and connected to the multi-link connecting rod strand 13. This strand is permanently connected to the lower rocker support 9. Both rocker supports are interconnected by a tension member strand 17.
  • FIG. 7
    By winding the hoisting rope 14 on the hoist 15, the Aufstellbock 20 begins to erect itself, the connecting rod strand 13 begins to stretch to the right of the Aufstellbock 20, then also left from Aufstellbock 20 until the lower rocker support 9 is raised.
  • FIG. 8
    The main hitch 15 continues to wind, the traction member strand 17 between the rocker supports 8 and 9 begins to tension. The jack 20 is prevented in its position to the rear by the stop screws on falling back.
  • FIG. 9
    The connecting rod strand 13 has arrived in its final position in front of the Haupthubwerk 15, the rocker supports 8 and 9 are in the end position, the operation is completed.
    The disarming takes place in reverse order.
  • FIG. 10
    This figure shows an embodiment of the jack 20, and that consists of a welded construction, which is rotatably mounted (pivotable) on the lower rocker support. At the bearing feet stop means are provided which prevent a turning of the jack. At the upper end of the Aufstellbockes is a fork in which the previously described connecting rod strand 13 - as from the FIGS. 6 to 9 visible - can be stored.

Die Anschlagschrauben dienen beim Abrüsten auch gleichzeitig dazu, dass der Aufstellbock 20 derart in seiner Stellung fixiert wird, dass der Verbindungsstangenstrang 13 über die Gabelform des Aufstellbocks 20 wieder aufgenommen wird.The stop screws are used during disassembly also at the same time that the jack 20 is fixed in its position such that the connecting rod strand 13 is taken over the fork shape of the jack 20 again.

Dieser Verbindungsstangenstrang 13 zieht den Aufstellbock 20 beim Aufrüsten des wippbaren Hilfsauslegers mit hoch, bis er an den Anschlagmitteln zum Anliegen kommt.-Entsprechend wird beim Abrüsten der Aufstellbock 20 durch das Ablassen des Verbindungsstangenstranges 13 mit genommen und in seine Transportposition (Figur 6) gebracht.This connecting rod strand 13 pulls the Aufstellbock 20 when upgrading the tiltable jib with high until it comes to abutment against the stop means. Accordingly, when dismantling the Aufstellbock 20 by discharging the connecting rod strand 13 and taken into its transport position ( FIG. 6 ) brought.

Claims (1)

  1. A method of equipping an auxiliary boom (3) arranged on the main boom (5) of a mobile crane with an auxiliary device, wherein
    - in the vicinity of the head (6) of the main boom (5) a support is mounted on it, by means of which the lifting cable (14) of the main boom (5) may be guided to a pivot point on the auxiliary boom (3),
    - the support consists of two luffing supports (8, 9) whose feet are situated close to one another and whose free ends are connected together,
    - the two luffing supports (8, 9) are permanently connected together by a tension force link strand (17),
    - the auxiliary boom (3) is connected to the head (6) of the main boom (5) via an adapter (4), on which the luffing supports are situated,
    - the upper and lower luffing supports may be laid flat on the auxiliary boom for transport purposes,
    - a multi-element connecting rod (13) is permanently connected to the lower luffing support (9),
    - the connecting rod (13) is connectable to an adjustment lifting gear (16) via a pulley (19),
    characterised by the following method steps:
    the auxiliary boom (13) is mounted on the head (6) of the main boom (5), wherein the two luffing supports (8, 9) lie flat on the auxiliary boom (3),
    the lifting cable (14) is unwound from the main lifting gear (15) of the mobile crane and connected to the connecting rod (13), which is permanently connected to the lower luffing support (9),
    wherein the two luffing supports are connected together by the tensional force link strand (17),
    a winding up of the lifting cable (14) onto the lifting gear (15) occurs, whereby the luffing supports (8 and 9) rise up,
    the connecting rod (13) is then connected to a flying beam (11) and the lifting cable (14) is unwound so that the beam (11) rises up along a line from the fixed beam (12) to the tip of the lower luffing support (9),
    the pulley (19) is thus placed under tension so that the lifting cable (14) can be uncoupled in this position from the connecting rod (13),
    the main boom (5) is then raised by means of the luffing cylinder (7) and
    the adjustment lifting gear (16) is simultaneously unwound so that the distance between the flying beam (11) and the fixed beam (12) increases,
    the adjusting lifting gear (16) can then be wound up again from a previously fixed main boom angular position so that the distance between the flying beam (11) and fixed beam (12) decreases, whereby the adjustable auxiliary boom (3) rises up from the ground since it is connected to the upper luffing support (8) by means of a further tensional force link strand (10).
EP08748782.3A 2007-04-19 2008-04-21 Method for installing an auxiliary boom to a main boom on a mobile crane Active EP2137093B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007019759 2007-04-19
DE102007044247 2007-09-11
PCT/DE2008/000714 WO2008128533A1 (en) 2007-04-19 2008-04-21 Auxiliary device for installing the lower and upper jib support of an adjustable auxiliary boom on a mobile crane

Publications (2)

Publication Number Publication Date
EP2137093A1 EP2137093A1 (en) 2009-12-30
EP2137093B1 true EP2137093B1 (en) 2016-09-28

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EP08748782.3A Active EP2137093B1 (en) 2007-04-19 2008-04-21 Method for installing an auxiliary boom to a main boom on a mobile crane

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US (1) US20100252522A1 (en)
EP (1) EP2137093B1 (en)
CN (1) CN101687618B (en)
WO (1) WO2008128533A1 (en)

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CN102756978A (en) * 2012-07-20 2012-10-31 辽宁抚挖重工机械股份有限公司 Foldable arm of crawler crane
DE102013002415B4 (en) * 2013-02-11 2019-04-25 Liebherr-Werk Ehingen Gmbh Method for erecting a long boom and crane
JP6451271B2 (en) * 2014-12-09 2019-01-16 株式会社タダノ Mobile crane
DE102015001619B4 (en) * 2015-02-09 2021-03-04 Liebherr-Werk Ehingen Gmbh Boom system for a mobile crane as well as a mobile crane
DE102015002626A1 (en) * 2015-03-03 2016-09-08 Liebherr-Werk Ehingen Gmbh Telescopic boom of a crane and method for its bracing, as well as for erecting telescopic extensions
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
DE102015120350B3 (en) 2015-11-24 2017-05-24 Terex Global Gmbh Mobile crane for bending a main boom extension relative to a main boom of a mobile crane
JP6468447B2 (en) 2017-03-30 2019-02-13 コベルコ建機株式会社 Method for raising and lowering undulating member, and crane
CN114277695A (en) * 2022-01-24 2022-04-05 中铁上海工程局集团有限公司 Construction method of steel reinforced concrete composite beam close to business line

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Also Published As

Publication number Publication date
CN101687618A (en) 2010-03-31
WO2008128533A1 (en) 2008-10-30
EP2137093A1 (en) 2009-12-30
CN101687618B (en) 2013-09-11
US20100252522A1 (en) 2010-10-07

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