EP1426321B1 - Mobile crane with two part boom - Google Patents

Mobile crane with two part boom Download PDF

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Publication number
EP1426321B1
EP1426321B1 EP03022158A EP03022158A EP1426321B1 EP 1426321 B1 EP1426321 B1 EP 1426321B1 EP 03022158 A EP03022158 A EP 03022158A EP 03022158 A EP03022158 A EP 03022158A EP 1426321 B1 EP1426321 B1 EP 1426321B1
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EP
European Patent Office
Prior art keywords
mobile crane
main boom
boom
crane according
winch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03022158A
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German (de)
French (fr)
Other versions
EP1426321A1 (en
Inventor
Hans Dieter Willim
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 Ehingen GmbH
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Liebherr Werk Ehingen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP1426321A1 publication Critical patent/EP1426321A1/en
Application granted granted Critical
Publication of EP1426321B1 publication Critical patent/EP1426321B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/823—Bracing equipment acting in vertical direction

Definitions

  • the invention relates to a mobile crane with a long main boom according to the preamble of claim 1.
  • main boom with luffing grid tips.
  • tipping tips retention braces must be provided. Moreover, they are usually after erecting the main boom in a bent relative to the main boom position.
  • a mobile crane with a long main boom according to the preamble of claim 1 is already known from DE 101 07 389 A.
  • Object of the present invention is now to be able to erect main boom with long boom lengths without derrick boom, whereby the entire erection process is facilitated and in particular long main boom can be erected.
  • the two-part main boom is connected at a pivot point such that it is bendable when erecting to be brought into a stretched or almost elongated final assembly position, wherein the main boom at least one pressure arm is pivotally mounted about a pivot point and wherein a Verstellwinde is provided associated adjusting bottle can be pulled over a reeving of the hoist cable to the top of the push rod, where it can be fixed by a hook.
  • This erected main boom does not require retention.
  • the intermediate piece with the at least one pressure link can be arranged at any point of the boom.
  • a fold-out support can be hinged.
  • the mobile crane may have an auxiliary winch, over which an auxiliary rope can be unwound or wound up.
  • About the adjusting the adjusting bottle can be retractable for erecting the bent front main boom part.
  • two pressure arms can be arranged parallel to each other.
  • the pivot axes of the two pressure arms may be arranged obliquely to the main boom, wherein a lateral bracing can be achieved by the oblique arrangement of the pivot axes of the two pressure arms, whereby the lateral stability of the boom is further increased.
  • a mobile crane 10 is shown with a main boom 12, wherein the main boom 12 consists of a lower boom portion 14 and an upper boom portion 16 which are pivotally connected to each other about a pivot point 18.
  • the entire boom length of the main boom 12 is constructed on the ground.
  • This main boom has a special intermediate piece, which is provided with a knee joint and a pressure link and is installed instead of a standard intermediate piece. The installation of this intermediate piece can be made at any point of the boom.
  • Figure 5 shows that at the upper part of the main boom 16, a pressure arm 20 is provided which is pivotable about a pivot point 22 relative to the upper arm 16.
  • the push rod 20 is a little raised when erecting the main boom with an auxiliary crane 24 from the transport position until there is a lever arm with respect to the pivot point 22.
  • a foldout Support 26 By a foldout Support 26, the pressure arm 20 is held in this position.
  • two rollers 28 and 30 are arranged.
  • an auxiliary winch 32 is provided, via which an auxiliary cable 34 is withdrawn and shown in the backward order, as shown in phantom in Figure 5 partially to a hoist winch 36.
  • the auxiliary cable 34 is coupled to the hoist rope wound on the hoist winch.
  • the hoist rope is then pulled forward by means of the auxiliary rope 34 to a fixed point 38 near the top of the upper part 16 of the main boom 12.
  • the hoisting rope is bolted to the fixed point 38.
  • FIG. 6 shows the erection process of the pressure link 20.
  • the pressure arm 20 By winding the hoist rope on the hoist winch 36, the pressure arm 20 automatically adjusts itself and tensioned front bracing rods 40.
  • a Verstellwinde 42 On the main boom 12, a Verstellwinde 42 is arranged, with an adjusting bottle 44 is connected.
  • the upper adjusting cylinder 48 By unwinding an adjusting cable 46 from the adjusting winch 42 and simultaneously winding the hoist winch 36, the upper adjusting cylinder 48 is pulled to the tip of the pressure arm until a bolt 50 provided on the upper adjusting cylinder 48 engages in a hook 52 (see FIG. 7 and in particular detail A) FIG. 7).
  • the hook 52 can be lifted with a short auxiliary cable 54 (compare detail A to FIG. 7).
  • the short auxiliary cable 54 is connected to the long auxiliary cable 34, so that the necessary force can be applied via the auxiliary winch 32.

Description

Die Erfindung betrifft einen Mobilkran mit einem langen Hauptauslegernach dem Oberbegriff des Anspruchs 1.The invention relates to a mobile crane with a long main boom according to the preamble of claim 1.

Durch spezielle Anwendungsgebiete werden immer längere Ausleger bei Mobilkranen gefordert. So besteht insbesondere beim Errichten von Windkraftanlagen das Problem, dass sehr lange Ausleger aufgerichtet werden müssen. Üblicherweise werden derartige Ausleger mit einem angebauten Derrickausleger mit angehängtem Derrickbalast aufgerichtet. Dies ist jedoch sehr zeitaufwendig und in schwierigem Gelände, in welchem Windkraftanlagen häufig stehen, schwer durchführbar.Due to special fields of application, ever longer booms are required for mobile cranes. Thus, in particular, when erecting wind turbines has the problem that very long boom must be erected. Usually, such booms are erected with a mounted derrick boom with attached derrick balustrade. However, this is very time consuming and hard to perform in difficult terrain where wind turbines are often.

Grundsätzlich ist es bereits bekannt, Hauptausleger mit wippbaren Gitterspitzen zu versehen. Bei derartigen Wippspitzen müssen Rückhaltesicherungen vorgesehen werden. Im übrigen befinden sie sich nach Aufrichten des Hauptauslegers meist in einer gegenüber dem Hauptausleger abgeknickten Lage.Basically, it is already known to provide main boom with luffing grid tips. In such tipping tips retention braces must be provided. Moreover, they are usually after erecting the main boom in a bent relative to the main boom position.

Ein Mobilkran mit einem langen Hauptausleger entsprechend dem Oberbegriff des Anspruchs 1 ist bereits aus der DE 101 07 389 A bekannt.A mobile crane with a long main boom according to the preamble of claim 1 is already known from DE 101 07 389 A.

Aufgabe der vorliegenden Erfindung ist es nun, Hauptausleger mit großen Auslegerlängen ohne Derrickausleger aufrichten zu können, wodurch der gesamte Aufrichtvorgang erleichtert wird und insbesondere lange Hauptausleger aufrichtbar sind.Object of the present invention is now to be able to erect main boom with long boom lengths without derrick boom, whereby the entire erection process is facilitated and in particular long main boom can be erected.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst. Der zweigeteilte Hauptausleger ist in einem Schwenkpunkt derart miteinander verbunden, dass er beim Aufrichten abknickbar ist, um in eine gestreckte oder nahezu gestreckte Endmontagelage verbringbar zu sein, wobei am Hauptausleger mindestens ein Drucklenker um einen Schwenkpunkt schwenkbar angeordnet ist und wobei eine Verstellwinde vorgesehen ist, deren zugehörige Verstellflasche über eine Einscherung des Hubseils zur Spitze des Drucklenkers ziehbar ist, wo sie über einen Haken festlegbar ist. Dieser aufgerichtete Hauptausleger benötigt keine Rückhaltesicherung.According to the invention, this object is solved by the features of claim 1. The two-part main boom is connected at a pivot point such that it is bendable when erecting to be brought into a stretched or almost elongated final assembly position, wherein the main boom at least one pressure arm is pivotally mounted about a pivot point and wherein a Verstellwinde is provided associated adjusting bottle can be pulled over a reeving of the hoist cable to the top of the push rod, where it can be fixed by a hook. This erected main boom does not require retention.

Das Zwischenstück mit dem mindestens einen Drucklenker kann an einer beliebigen Stelle des Auslegers angeordnet sein. Am Drucklenker kann eine ausklappbare Stütze angelenkt sein. Der Mobilkran kann über eine Hilfswinde verfügen, über die ein Hilfsseil ab- bzw. aufwickelbar ist.The intermediate piece with the at least one pressure link can be arranged at any point of the boom. At the push handle a fold-out support can be hinged. The mobile crane may have an auxiliary winch, over which an auxiliary rope can be unwound or wound up.

Über die Verstellwinde kann die Verstellflasche zum aufrichten des abgeknickten vorderen Hauptauslegerteils einziehbar sein.About the adjusting the adjusting bottle can be retractable for erecting the bent front main boom part.

Vorzugsweise können zwei Drucklenker parallel zueinander angeordnet sein.Preferably, two pressure arms can be arranged parallel to each other.

Die Schwenkachsen der beiden Drucklenker können schräg zum Hauptausleger angeordnet sein, wobei durch die schräge Anordnung der Schwenkachsen der beiden Drucklenker eine seitliche Abspannung erreicht werden kann, wodurch die Seitenstabilität des Auslegers weiter erhöht wird.The pivot axes of the two pressure arms may be arranged obliquely to the main boom, wherein a lateral bracing can be achieved by the oblique arrangement of the pivot axes of the two pressure arms, whereby the lateral stability of the boom is further increased.

Weitere Einzelheiten und Vorteile der Erfindung werden an Hand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Fig. 1:
eine seitliche Darstellung eines Mobilkrans gemäß der vorliegenden Erfindung mit einem noch auf dem Boden aufliegenden Hauptausleger,
Fig. 2 bis Fig. 4:
verschiedene Arbeitsabschnitte während des Aufrichtens des Hauptauslegers in einer Ausführungsform, wie sie in Figur 1 dargestellt ist,
Fig. 5 bis Fig. 7:
Details während des Aufstellvorgangs des Mobilkrans.
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:
a side view of a mobile crane according to the present invention with a still resting on the ground main boom,
2 to 4:
various working sections during erection of the main boom in an embodiment as shown in Figure 1,
Fig. 5 to Fig. 7:
Details during the installation process of the mobile crane.

In Figur 1 ist ein Mobilkran 10 mit einem Hauptausleger 12 dargestellt, wobei der Hauptausleger 12 aus einem unteren Auslegerteil 14 und einem oberen Auslegerteil 16 besteht, die um einen Anlenkpunkt 18 schwenkbar miteinander verbunden sind. In der Figur 1 ist die gesamte Auslegerlänge des Hauptauslegers 12 auf dem Boden aufgebaut. Dieser Hauptausleger weist ein spezielles Zwischenstück auf, das mit einem Knie-Gelenk und einem Drucklenker versehen ist und an Stelle eines Standardzwischenstückes eingebaut ist. Der Einbau dieses Zwischenstücks kann an beliebiger Stelle des Auslegers vorgenommen werden.In Figure 1, a mobile crane 10 is shown with a main boom 12, wherein the main boom 12 consists of a lower boom portion 14 and an upper boom portion 16 which are pivotally connected to each other about a pivot point 18. In Figure 1, the entire boom length of the main boom 12 is constructed on the ground. This main boom has a special intermediate piece, which is provided with a knee joint and a pressure link and is installed instead of a standard intermediate piece. The installation of this intermediate piece can be made at any point of the boom.

An Hand der Figuren 5 bis 7 wird der Aufbau des Auslegers und der Komponenten des Mobilkrans 10, die zum Aufrichten des Hauptauslegers 12 notwendig sind, in näherem Detail beschrieben.With reference to Figures 5 to 7, the structure of the boom and the components of the mobile crane 10, which are necessary for erecting the main boom 12, will be described in more detail.

So zeigt Figur 5, dass am oberen Teil des Hauptauslegers 16 ein Drucklenker 20 vorgesehen ist, der um einen Anlenkpunkt 22 gegenüber dem oberen Ausleger 16 verschwenkbar ist. Der Drucklenker 20 wird beim Aufrichten des Hauptauslegers mit einem Hilfskran 24 aus der Transportstellung ein wenig angehoben, bis sich bezüglich des Anlenkpunktes 22 ein Hebelarm ergibt. Durch eine ausklappbare Stütze 26 wird der Drucklenker 20 in dieser Position gehalten. An der Spitze des Drucklenkers 20 sind zwei Rollen 28 und 30 angeordnet.Thus, Figure 5 shows that at the upper part of the main boom 16, a pressure arm 20 is provided which is pivotable about a pivot point 22 relative to the upper arm 16. The push rod 20 is a little raised when erecting the main boom with an auxiliary crane 24 from the transport position until there is a lever arm with respect to the pivot point 22. By a foldout Support 26, the pressure arm 20 is held in this position. At the top of the pressure arm 20, two rollers 28 and 30 are arranged.

Am Mobilkran 10 ist eine Hilfswinde 32 vorgesehen, über die ein Hilfsseil 34 abgezogen wird und in rückwärtiger Folge, wie in Figur 5 teilweise gestrichelt dargestellt bis hin zu einer Hubwinde 36 geführt wird. Dort wird das Hilfsseil 34 mit dem auf der Hubwinde aufgewickelten Hubseil gekoppelt. Mit der Hilfswinde 32 wird anschließend mittels des Hilfsseils 34 das Hubseil nach vorne gezogen bis zu einem Festpunkt 38 nahe der Spitze des oberen Teils 16 des Hauptauslegers 12. Dort wird das Hubseil mit dem Festpunkt 38 verbolzt.On mobile crane 10, an auxiliary winch 32 is provided, via which an auxiliary cable 34 is withdrawn and shown in the backward order, as shown in phantom in Figure 5 partially to a hoist winch 36. There, the auxiliary cable 34 is coupled to the hoist rope wound on the hoist winch. With the auxiliary winch 32, the hoist rope is then pulled forward by means of the auxiliary rope 34 to a fixed point 38 near the top of the upper part 16 of the main boom 12. There, the hoisting rope is bolted to the fixed point 38.

In Figur 6 wird der Aufrichtvorgang des Drucklenkers 20 gezeigt. Durch Aufspulen des Hubseils auf der Hubwinde 36 richtet sich der Drucklenker 20 selbsttätig auf und spannt vordere Abspannstangen 40. Am Hauptausleger 12 ist eine Verstellwinde 42 angeordnet, mit der eine Verstellflasche 44 verbunden ist. Durch Abspulen eines Verstellseils 46 von der Verstellwinde 42 und gleichzeitiges Aufspulen der Hubwinde 36 wird die obere Verstellflasche 48 zur Spitze des Drucklenkers gezogen, bis ein an der oberen Verstellflasche 48 vorgesehener Bolzen 50 in einem Haken 52 einrastet (vergleiche Figur 7 und insbesondere Detail A zur Figur 7).FIG. 6 shows the erection process of the pressure link 20. By winding the hoist rope on the hoist winch 36, the pressure arm 20 automatically adjusts itself and tensioned front bracing rods 40. On the main boom 12, a Verstellwinde 42 is arranged, with an adjusting bottle 44 is connected. By unwinding an adjusting cable 46 from the adjusting winch 42 and simultaneously winding the hoist winch 36, the upper adjusting cylinder 48 is pulled to the tip of the pressure arm until a bolt 50 provided on the upper adjusting cylinder 48 engages in a hook 52 (see FIG. 7 and in particular detail A) FIG. 7).

Zur Demontage kann der Haken 52 mit einem kurzen Hilfsseil 54 (vergleiche Detail A zur Figur 7) angehoben werden. Hierzu wird das kurze Hilfsseil 54 mit dem langen Hilfsseil 34 verbunden, so dass die notwendige Kraft über die Hilfswinde 32 aufbringbar ist.For disassembly, the hook 52 can be lifted with a short auxiliary cable 54 (compare detail A to FIG. 7). For this purpose, the short auxiliary cable 54 is connected to the long auxiliary cable 34, so that the necessary force can be applied via the auxiliary winch 32.

Beim Aufrichten des Hauptauslegers, wie dies in den Figuren 2 bis 4 gezeigt ist, wird nun zunächst der untere Teil 14 des Hauptauslegers hochgezogen (vergleiche Figur 2). Hierbei rollt die Spitze des oberen Teil des Auslegers 16 auf den Boden ab oder wird mit einem Hilfskran in der Schwebe gehalten. Während des Aufrichtens des unteren Teils 14 des Hauptauslegers 12 wird die Verstellflasche 44 laufend nachgelassen, so dass das Auslegerkopfgewicht auf dem Boden aufliegt und deshalb nicht mitaufgerichtet werden muss. Nachdem der untere Teil des Hauptauslegers einen entsprechenden Winkel zum Boden erreicht hat und demzufolge die Massen näher zum Kran verlagert wurden, wird über das Einziehen der Verstellflasche 44 mittels der Verstellwinde 42 der obere Teil 16 des Hauptauslegers hochgezogen. Der Hauptausleger befindet sich dabei immer noch in einer Neigung nach vorne, so dass der Ausleger in eine Streckposition gebracht werden kann, ohne das eine Rückhaltesicherung erforderlich ist. Der Ausleger wird bis auf einen Anschlag gezogen und die Verstellflasche 44 wird festgesetzt. Durch diese zusätzliche Rückspannung wird die Stabilität des Auslegers 10 noch erhöht.When erecting the main boom, as shown in Figures 2 to 4, the lower part 14 of the main boom is now first pulled up (see Figure 2). In this case, the tip of the upper part of the boom 16 rolls on the ground or is held in suspension with an auxiliary crane. During erection of the lower part 14 of the main boom 12, the adjusting bottle 44 is continuously lowered, so that the boom head weight rests on the ground and therefore does not have to be co-erected. After the lower part of the main boom has reached a corresponding angle to the ground and therefore the masses were moved closer to the crane, is pulled over the retraction of the adjusting bottle 44 by means of the adjusting 42, the upper part 16 of the main boom. The main boom is still tilted forward so the boom can be moved to a stretched position without the need for a retention lock. The boom is pulled to a stop and the adjustment bottle 44 is fixed. By this additional return voltage, the stability of the boom 10 is further increased.

Claims (6)

  1. Mobile crane (10) with a long main boom (12) which is in two parts and is connected together at a pivot point (18) in such a manner that it can be bent over as it is erected in order to be able to be placed into an extended or virtually extended final assembly position, characterized in that at least one strut member (20) is arranged on the main boom (12) in a manner such that it can pivot about a pivot point (22), and in that an adjustment winch (42) is provided, the associated adjustment pulley (44) of which can be pulled to the tip of the strut member (20) by a reeving of the hoisting cable, with it being able to be secured via a hook (52).
  2. Mobile crane according to Claim 1, characterized in that a support (26) which can be opened out is coupled to the strut member (20).
  3. Mobile crane according to either of Claims 1 and 2, characterized in that an auxiliary winch (32) is provided via which an auxiliary cable (34) can be unwound and wound up.
  4. Mobile crane according to one of Claims 1-3, characterized in that two strut members (20) are arranged parallel to each other.
  5. Mobile crane according to Claim 4, characterized in that the pivot axes of the two strut members (20) are arranged obliquely with respect to the main boom.
  6. Mobile crane according to either of Claims 4 and 5, characterized in that the adjustment pulley (44) can be retracted via the adjustment winch (42) in order to erect the bent-over front main boom part (16).
EP03022158A 2002-12-06 2003-09-30 Mobile crane with two part boom Expired - Lifetime EP1426321B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20218971U 2002-12-06
DE20218971U DE20218971U1 (en) 2002-12-06 2002-12-06 Mobile crane with long arms

Publications (2)

Publication Number Publication Date
EP1426321A1 EP1426321A1 (en) 2004-06-09
EP1426321B1 true EP1426321B1 (en) 2006-05-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03022158A Expired - Lifetime EP1426321B1 (en) 2002-12-06 2003-09-30 Mobile crane with two part boom

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US (1) US7219810B2 (en)
EP (1) EP1426321B1 (en)
DE (2) DE20218971U1 (en)

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DE202005016743U1 (en) * 2005-10-25 2007-03-29 Liebherr-Werk Ehingen Gmbh Crane comprises a bracing device having two brace supports hinged on an auxiliary boom and inclined opposite a rocker surface
DE102007056289B4 (en) 2007-10-29 2009-06-04 Liebherr-Werk Ehingen Gmbh Method for erecting a crane jib
US8839966B2 (en) 2009-03-31 2014-09-23 Manitowoc Crane Companies, Llc Folding jib main strut and transportable reeved strut caps
EP2476642B1 (en) * 2011-01-12 2013-07-24 Manitowoc Crane Companies, LLC Method of connecting crane suspension assembly sections together and frame mounted assembly used therefore
DE102011014585A1 (en) * 2011-03-21 2012-09-27 Liebherr-Werk Ehingen Gmbh Method for erecting beam of crane, particularly for erecting lattice jib, involves erecting beam from laid down position, in which traction force is exerted on beam by traction element, particularly restraint
DE102012019248A1 (en) * 2012-09-28 2014-04-03 Liebherr-Werk Biberach Gmbh Tower Crane
DE102013002415B4 (en) 2013-02-11 2019-04-25 Liebherr-Werk Ehingen Gmbh Method for erecting a long boom and crane
CN103708362B (en) * 2013-12-27 2015-12-09 浙江三一装备有限公司 Articulated boom and hoisting crane in a kind of crawler crane
CN116443745B (en) * 2023-06-16 2023-10-20 杭州未名信科科技有限公司 Tower crane system and control method

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Publication number Publication date
DE20218971U1 (en) 2004-04-08
EP1426321A1 (en) 2004-06-09
DE50303557D1 (en) 2006-07-06
US7219810B2 (en) 2007-05-22
US20040124167A1 (en) 2004-07-01

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