EP1934129B1 - Modular counterweight carriage for cranes, in particular for large cranes - Google Patents

Modular counterweight carriage for cranes, in particular for large cranes Download PDF

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Publication number
EP1934129B1
EP1934129B1 EP06805447A EP06805447A EP1934129B1 EP 1934129 B1 EP1934129 B1 EP 1934129B1 EP 06805447 A EP06805447 A EP 06805447A EP 06805447 A EP06805447 A EP 06805447A EP 1934129 B1 EP1934129 B1 EP 1934129B1
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EP
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Prior art keywords
counterweight
travelling
crane according
superstructure
crane
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EP06805447A
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German (de)
French (fr)
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EP1934129A1 (en
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Rüdiger Zollondz
Alfons Weckbecker
Fritz-Botho Köster
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Tadano Demag GmbH
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Terex Demag GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • the invention relates to all cranes that are equipped with a counterweight car, especially large cranes with a superstructure, with at least one boom and at least one counter-jib and a separately arranged, connected to the tip of the counter jib counterweight.
  • the invention can be applied to various types of cranes. These will be briefly explained below.
  • cantilever 1 and counter-cantilever 2 are articulated on a common structure, referred to as uppercarriage 3.
  • the superstructure 3 has at least one degree of freedom of movement relative to the ground or its foundation. In the type of degree of freedom, the crane types differ.
  • This superstructure 3 is rotatably connected to an undercarriage 4, which can move by means of crawlers or wheels on the ground.
  • the superstructure is rotatably connected to a rack which stands on supports on the ground or on a pontoon.
  • Mobile cranes can also be combined with supports.
  • ring lift In which the superstructure moves on a circular track.
  • the web does not necessarily have to be closed and does not have to be circular.
  • Other types of cranes are conceivable as long as the superstructure has at least one degree of freedom of movement relative to the ground or its foundation, the term foundation here meaning both an undercarriage, supports or a ring track,
  • the crane shown by way of example belongs to the prior art, is a lattice boom crawler crane and operates according to the Derrick-Kran principle, i.
  • the basic unit is designed without ballast and does not contribute to the stall torque.
  • a device according to the preamble of claim 1 is made EP 0 048 076 A known.
  • ballast arrangements that either stand out from the ground or are based on counter carriages with crawler tracks or wheels.
  • a disadvantage of the non-movable ballast arrangements is that with small to medium loads lifting off is not always possible, or in derrick crane is generally not allowed.
  • Superlift counterweight 5 is located below said counter-jib 2. It is connected to the tip of counter-jib 2 via super-lift carrying rods 6.
  • the superlift poles can also be formed as ropes, chains, hydraulic cylinders or other tension elements and be present in any number.
  • the counter-jib 2 is connected to the boom 1 via boom support rods 7 (whether ropes or rods or other tension elements play no role for the invention).
  • a load 8 on the boom 1 generates a force in the boom support rods 7, which in turn generates a force in the super lift support rods 6.
  • Superlift counterweight 5, which corresponds to the superlift lift bar force (in Figure 6), is referred to as activated superlift counterweight.
  • the superlift counterweight 5 is placed on or attached to a counterweight trolley 9.
  • the counterweight car has a chassis with wheels 10 or caterpillars.
  • a connection 11 between the uppercarriage 3 and the counterweight trolley 9 makes sense.
  • Counterweight 9 are very expensive individual pieces due to the high loads of several hundred tons and are designed for use on a crane of a certain capacity.
  • the division of the counterweights or is done so that the carrying capacity of the movable counterweight is below the maximum possible for this crane superlift counterweight and that the non-movable counterweight takes the difference to the maximum possible Superliftong.
  • the superstructure is arranged, i. whether he is, for example, on a movable undercarriage or on a - at least temporarily stationary - resting on the ground structure.
  • the superstructure has at least one degree of freedom of movement with respect to the ground or its foundation, that is to say that it is movable, in particular rotatable (about the vertical axis) in the horizontal plane.
  • the undercarriage can be moved by means of caterpillars or wheels on the ground.
  • the superstructure may also be designed as a ring lift and be horizontally rotatable on a arranged on the ground, open or closed loop.
  • the superstructure is designed as a ring lift and is horizontally rotatable on an open or closed loop arranged on a floating pontoon.
  • a traverse is provided above the movable counterweight, which is connected at the top with the tip of the counter jib and down with both the movable counterweight as well as not movable counterweight is connected.
  • the connection between traverse and movable counterweight is designed such that first the non-movable counterweight is raised before the movable counterweight is activated.
  • a simple design consists of a chain between traverse and movable counterweight whose length is adjusted so that it only tightens when the non-movable counterweight has lifted.
  • rods may be provided with a hinge or a bolt in a slot instead of a chain.
  • a further advantageous embodiment results if between the non-movable counterweight and the traverse at least one hydraulic cylinder or a cable shearing are present, because in this way the length of the connection can be varied.
  • This embodiment of the invention makes it possible to reverse the order of activation, so that first the movable counterweight is activated. This makes it possible to de-energize the connection between traverse and non-movable counterweight. In this condition, it is possible to release the complete non-moveable counterweight from the crosshead.
  • the counterweight may consist of several movable and non-movable units, which are arranged side by side, one behind the other or offset from one another.
  • the plurality of movable and non-movable counterweights can be rigidly or detachably connected to one another via one or more trusses, which are arranged side by side, behind one another or offset from one another.
  • the movable counterweight can be equipped with its own drive.
  • the movable counterweight is also referred to below as a counterweight car.
  • the counterweight is selected so that test loads associated with the rated capacities can be lifted, i. at nominal load, only part of this counterweight is activated (lifted off, without direct or indirect contact with the ground). Only the remainder, the so-called test load reserve, must be moved accordingly when turning or moving the crane with the load attached.
  • standard counterweight 9 is sufficient, which is supplemented by additional counterweight 13. Since the counterweight car can not carry the increased counterweight, it initially stops on the ground and according to the invention is connected to the mast top, so that first this part of the counterweight is activated and only then the counterweight located on the counterweight car.
  • the design of the existing counterweight carriage 9, preferably with its own drive additionally has the advantage that in the basic unit no additional rotary mechanism devices are needed to turn the larger masses generated.
  • the test load reserve available on the counterweight car at all times ensures that slippage is effectively avoided and that the drive power can be transmitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

A large mobile crane includes a revolving superstructure, a main boom hinged to the superstructure, and a derrick boom hinged to the superstructure. A modular counterweight system includes a traveling counterweight and a non-traveling counterweight connected to a crossbeam suspended from the distal end of the derrick boom so that the non-traveling counterweight is activated before the traveling counterweight.

Description

Die Erfindung betrifft alle Krane, die mit einem Gegengewichtswagen ausgerüstet sind, insbesondere Großkrane mit einem Oberwagen, mit mindestens einem Ausleger und mindestens einem Gegenausleger sowie einem separat angeordneten, mit der Spitze des Gegenauslegers verbundenen Gegengewicht.The invention relates to all cranes that are equipped with a counterweight car, especially large cranes with a superstructure, with at least one boom and at least one counter-jib and a separately arranged, connected to the tip of the counter jib counterweight.

Die Erfindung kann für verschiedene Krangattungen angewendet werden. Diese sollen im nachstehenden kurz erläutert werden. In jedem Fall sind Ausleger 1 und Gegenausleger 2 auf einer gemeinsamen Struktur angelenkt, die als Oberwagen 3 bezeichnet wird. Bei einem erfindungsgemäßen Kran hat der Oberwagen 3 zumindest einen Bewegungsfreiheitsgrad gegenüber dem Boden oder seinem Fundament. In der Art des Freiheitsgrades unterscheiden sich die Krangattungen. Bei einem Mobilkran (Fig. 1) ist dieser Oberwagen 3 drehbar mit einem Unterwagen 4 verbunden, der mittels Raupenfahrwerke oder Räder am Boden verfahren kann. Bei einem Stützenkran ist der Oberwagen drehbar mit einem Gestell verbunden, das auf Stützen am Boden oder auf einem Ponton steht. Mobilkrane können auch mit Stützen kombiniert werden. Eine weitere Kranart ist der Ringlift, bei dem sich der Oberwagen auf einer Ringbahn bewegt. Die Bahn muss nicht unbedingt geschlossen sein und muss auch nicht kreisförmig sein. Auch andere Krangattungen sind vorstellbar, solange der Oberwagen zumindest einen Bewegungsfreiheitsgrad gegenüber dem Boden oder seinem Fundament hat, wobei unter dem Begriff Fundament hier sowohl ein Unterwagen, Stützen oder eine Ringlaufbahn verstanden wird,The invention can be applied to various types of cranes. These will be briefly explained below. In any case, cantilever 1 and counter-cantilever 2 are articulated on a common structure, referred to as uppercarriage 3. In a crane according to the invention, the superstructure 3 has at least one degree of freedom of movement relative to the ground or its foundation. In the type of degree of freedom, the crane types differ. For a mobile crane ( Fig. 1 ) This superstructure 3 is rotatably connected to an undercarriage 4, which can move by means of crawlers or wheels on the ground. In a pillar crane, the superstructure is rotatably connected to a rack which stands on supports on the ground or on a pontoon. Mobile cranes can also be combined with supports. Another type of crane is the ring lift, in which the superstructure moves on a circular track. The web does not necessarily have to be closed and does not have to be circular. Other types of cranes are conceivable as long as the superstructure has at least one degree of freedom of movement relative to the ground or its foundation, the term foundation here meaning both an undercarriage, supports or a ring track,

Der beispielhaft gezeigte Kran gehört zum Stand der Technik, ist ein Gittermast-Raupenkran und arbeitet nach dem Derrick-Kran-Prinzip, d.h. das Grundgerät ist ohne Ballast ausgeführt und liefert keinen Anteil zum Standmoment.The crane shown by way of example belongs to the prior art, is a lattice boom crawler crane and operates according to the Derrick-Kran principle, i. The basic unit is designed without ballast and does not contribute to the stall torque.

Eine Vorrichtung gemäss dem Obergriff des Anspruchs 1 ist aus EP 0 048 076 A bekannt.A device according to the preamble of claim 1 is made EP 0 048 076 A known.

Für das Heben der größeren Lasten ist wegen des fehlenden bzw. geringen Standmoments aus der Grundmaschine ein vergrößertes Gegengewicht anzuordnen. Beim Drehen oder Verfahren des Kranes muss dieses Gegengewicht mitbewegt werden. Bekannte Lösungen sind Ballastanordnungen, die entweder vom Grund abheben oder auf Gegengewichtswagen mit Raupenfahrwerken oder Rädern basieren.For the lifting of the larger loads an enlarged counterweight is to be arranged because of the lack or low stalling torque from the basic machine. When turning or moving the crane, this counterweight must be moved. Well-known solutions are ballast arrangements that either stand out from the ground or are based on counter carriages with crawler tracks or wheels.

Nachteilig bei den nicht verfahrbaren Ballastanordnungen ist, dass bei kleineren bis mittleren Lasten ein Abheben nicht immer möglich, bzw. beim Derrickkran generell nicht zulässig ist.A disadvantage of the non-movable ballast arrangements is that with small to medium loads lifting off is not always possible, or in derrick crane is generally not allowed.

Die zur Erzielung großer Tragfähigkeiten benötigten hohen Ballastgewichte erfordern allerdings großbauende, aufwändige und teure verfahrbare Ausführungen. Dazu werden bislang Gegengewichtswagen mit entweder Raupenfahrwerken (Lampson) oder mit Rädern eingesetzt. Neben der in bisheriger ingenieurmäßiger Praxis vorwiegenden Vorgehensweise, einen entsprechend großen Wagen zu bauen, besteht die Möglichkeit, zwei Wagen in einem Tandemgespann zu verwenden. Beide Lösungen sind aufwändig, teuer und auch kaum durch Umbau zur Verwendung bei kleineren Kranen geeignet.However, the high ballast weights required to achieve high load capacities require large-scale, complex and expensive movable versions. For this purpose, counterweight cars with either crawler tracks (Lampson) or with wheels have been used. In addition to the predominant in previous engineering practice approach to build a correspondingly large car, it is possible to use two cars in a tandem trailer. Both solutions are complex, expensive and hardly suitable for conversion to smaller cranes.

Im Folgenden wird die Grundidee an dem Drehfreiheitsgrad eines Mobilkranes erläutert. Entsprechendes gilt aber auch für eine allgemeine ebene Bewegung des Oberwagens.The basic idea of the rotational freedom of a mobile crane is explained below. The same applies, however, to a general planar movement of the superstructure.

Unterhalb des erwähnten Gegenauslegers 2 befindet sich Superliftgegengewicht 5. Dieses ist über die Superlifttragstangen 6 mit der Spitze des Gegenauslegers 2 verbunden. Die Superlifttragstangen können auch als Seile, Ketten, Hydraulikzylinder oder sonstige Zugelemente ausgeformt und in beliebiger Anzahl vorhanden sein. Der Gegenausleger 2 ist mit dem Ausleger 1 über Auslegerhaltestangen 7 (ob Seile oder Stangen oder sonstige Zugelemente spielt für die Erfindung keine Rolle) verbunden. Eine Last 8 am Ausleger 1 erzeugt eine Kraft in den Auslegerhaltestangen 7, die wiederum eine Kraft in den Superlifttragstangen 6 erzeugt. Das Superliftgegengewicht 5, das der Superlifttragstangenkraft (in 6) entspricht, wird als aktiviertes Superliftgegengewicht bezeichnet.Superlift counterweight 5 is located below said counter-jib 2. It is connected to the tip of counter-jib 2 via super-lift carrying rods 6. The superlift poles can also be formed as ropes, chains, hydraulic cylinders or other tension elements and be present in any number. The counter-jib 2 is connected to the boom 1 via boom support rods 7 (whether ropes or rods or other tension elements play no role for the invention). A load 8 on the boom 1 generates a force in the boom support rods 7, which in turn generates a force in the super lift support rods 6. Superlift counterweight 5, which corresponds to the superlift lift bar force (in Figure 6), is referred to as activated superlift counterweight.

Um ein Drehen des Krans zu ermöglichen, wird das Superliftgegengewicht 5 auf einen Gegengewichtswagen 9 gestellt oder daran befestigt. Der Gegengewichtswagen besitzt ein Fahrwerk mit Rädern 10 oder mit Raupen. Um die Lage des Superliftgegengewichts 5 bzw. des Gegengewichtswagens 9 zum Oberwagen 3 zu fixieren und um insbesondere während eines Bewegungsvorgangs Kräfte zwischen Oberwagen 3 und Gegengewichtswagen 9 zu übertragen, ist eine Verbindung 11 zwischen Oberwagen 3 und Gegengewichtswagen 9 sinnvoll. Gegengewichtswagen 9 sind aufgrund der hohen Traglasten von mehreren hundert Tonnen sehr teure Einzelstücke und werden auf die Verwendung an einem Kran einer bestimmten Kapazität hin entwickelt.To allow the crane to rotate, the superlift counterweight 5 is placed on or attached to a counterweight trolley 9. The counterweight car has a chassis with wheels 10 or caterpillars. In order to fix the position of the Superlift counterweight 5 or of the counterweight trolley 9 to the uppercarriage 3 and, in particular, to transmit forces between the uppercarriage 3 and the counterweight trolley 9 during a movement process, a connection 11 between the uppercarriage 3 and the counterweight trolley 9 makes sense. Counterweight 9 are very expensive individual pieces due to the high loads of several hundred tons and are designed for use on a crane of a certain capacity.

Es ist die Aufgabe der vorliegenden Erfindung ein modulares Gegengewichtssystem bereitzustellen, welches über das maximal für den Kran vorgesehene Superliftgegengewicht verfügt, ohne einen entsprechend großen Wagen zu benötigen, wobei die Mobilität des Kranes weiterhin gewährleistet sein soll.It is the object of the present invention to provide a modular counterweight system, which has the maximum provided for the crane superlift counterweight, without requiring a correspondingly large car, the mobility of the Cranes should continue to be guaranteed.

Gelöst wird diese Aufgabe erfindungsgemäß mit den Merkmalen des Patentanspruchs 1, und zwar dadurch, dass der Oberwagen mindestens einen Bewegungsfreiheitsgrad gegenüber dem Boden oder seinem Fundament aufweist und dass das Gegengewicht aufgeteilt ist in ein verfahrbares Gegengewicht und ein nicht verfahrbares Gegengewicht, die sowohl untereinander als auch mit dem Gegenausleger derart verbunden sind, dass das nicht verfahrbare Gegengewicht vor dem verfahrbaren Gegengewicht aktivierbar ist.This object is achieved according to the invention with the features of claim 1, namely the fact that the superstructure has at least one degree of freedom of movement relative to the ground or its foundation and that the counterweight is divided into a movable counterweight and a non-movable counterweight, both with each other and are connected to the counter-jib in such a way that the non-movable counterweight can be activated in front of the movable counterweight.

Vorzugsweise Ausgestaltungen ergeben sich aus den Unteransprüchen.Preferably embodiments emerge from the subclaims.

Die Aufteilung des oder der Gegengewichte wird so vorgenommen, dass die Tragfähigkeit des verfahrbaren Gegengewichtes unterhalb des für diesen Kran maximal möglichen Superliftgegengewichtes liegt und dass das nicht verfahrbare Gegengewicht die Differenz zum maximal möglichen Superliftgewicht aufnimmt.The division of the counterweights or is done so that the carrying capacity of the movable counterweight is below the maximum possible for this crane superlift counterweight and that the non-movable counterweight takes the difference to the maximum possible Superliftgewicht.

Für die Erfindung ist es an sich nicht wesentlich, worauf der Oberwagen angeordnet ist, d.h. ob er sich beispielsweise auf einem verfahrbaren Unterwagen befindet oder auf einer - zumindest temporär ortsfesten - auf dem Boden aufliegenden Struktur.As such, it is not essential to the invention on which the superstructure is arranged, i. whether he is, for example, on a movable undercarriage or on a - at least temporarily stationary - resting on the ground structure.

Wesentlich ist, dass der Oberwagen mindestens einen Bewegungsfreiheitsgrad gegenüber dem Boden oder seinem Fundament aufweist, also (um die vertikale Achse) in der horizontalen Ebene beweglich, insbesondere drehbar ist.It is essential that the superstructure has at least one degree of freedom of movement with respect to the ground or its foundation, that is to say that it is movable, in particular rotatable (about the vertical axis) in the horizontal plane.

Der Unterwagen kann mittels Raupen oder Rädern auf dem Boden verfahrbar sein. Der Oberwagen kann aber auch als Ringlift ausgebildet sein und auf einer am Boden angeordneten, offenen oder geschlossenen Ringbahn horizontal drehbar sein.The undercarriage can be moved by means of caterpillars or wheels on the ground. The superstructure may also be designed as a ring lift and be horizontally rotatable on a arranged on the ground, open or closed loop.

Möglich ist auch, dass der Oberwagen als Ringlift ausgebildet ist und auf einer auf einem schwimmfähigen Ponton angeordneten offenen oder geschlossenen Ringbahn horizontal drehbar ist.It is also possible that the superstructure is designed as a ring lift and is horizontally rotatable on an open or closed loop arranged on a floating pontoon.

Nach einer erfindungsgemäßen Weiterbildung ist über dem verfahrbaren Gegengewicht eine Traverse vorgesehen, die nach oben mit der Spitze des Gegenauslegers verbunden ist und nach unten sowohl mit dem verfahrbaren Gegengewicht wie auch mit dem nicht verfahrbaren Gegengewicht verbunden ist.According to a further development of the invention, a traverse is provided above the movable counterweight, which is connected at the top with the tip of the counter jib and down with both the movable counterweight as well as not movable counterweight is connected.

Die Verbindung zwischen Traverse und verfahrbarem Gegengewicht ist derart gestaltet, dass zuerst das nicht verfahrbare Gegengewicht angehoben wird bevor das verfahrbare Gegengewicht aktiviert wird. Eine einfache Ausführung besteht aus einer Kette zwischen Traverse und verfahrbarem Gegengewicht, deren Länge so abgestimmt ist, dass diese erst straff wird, wenn das nicht verfahrbare Gegengewicht abgehoben hat. Alternativ können auch Stangen mit einem Gelenk oder ein Bolzen in einem Langloch anstatt einer Kette vorgesehen werden.The connection between traverse and movable counterweight is designed such that first the non-movable counterweight is raised before the movable counterweight is activated. A simple design consists of a chain between traverse and movable counterweight whose length is adjusted so that it only tightens when the non-movable counterweight has lifted. Alternatively, rods may be provided with a hinge or a bolt in a slot instead of a chain.

Eine weitere vorteilhafte Ausbildung ergibt sich, wenn zwischen dem nicht verfahrbaren Gegengewicht und der Traverse mindestens ein Hydraulikzylinder oder eine Seileinscherung vorhanden sind, weil hierdurch die Länge der Verbindung variiert werden kann.A further advantageous embodiment results if between the non-movable counterweight and the traverse at least one hydraulic cylinder or a cable shearing are present, because in this way the length of the connection can be varied.

Durch diese erfindungsgemäße Ausbildung wird es möglich, die Aktivierungsreihenfolge umzukehren, so dass zuerst das verfahrbare Gegengewicht aktiviert wird. Dies ermöglicht, die Verbindung zwischen Traverse und nicht verfahrbarem Gegengewicht kraftfrei zu machen. In diesem Zustand ist es möglich, das vollständige nicht verfahrbare Gegengewicht von der Traverse zu lösen.This embodiment of the invention makes it possible to reverse the order of activation, so that first the movable counterweight is activated. This makes it possible to de-energize the connection between traverse and non-movable counterweight. In this condition, it is possible to release the complete non-moveable counterweight from the crosshead.

Das Gegengewicht kann aus mehreren verfahrbaren und nicht verfahrbaren Einheiten bestehen, welche nebeneinander, hintereinander oder versetzt zueinander angeordnet sind.The counterweight may consist of several movable and non-movable units, which are arranged side by side, one behind the other or offset from one another.

Dabei können die mehreren verfahrbaren und nicht verfahrbaren Gegengewichte über eine oder mehrere Traversen miteinander starr oder lösbar verbunden sein, welche nebeneinander, hintereinander oder versetzt zueinander angeordnet sind.In this case, the plurality of movable and non-movable counterweights can be rigidly or detachably connected to one another via one or more trusses, which are arranged side by side, behind one another or offset from one another.

Das verfahrbare Gegengewicht kann mit eigenem Antrieb ausgerüstet sein.The movable counterweight can be equipped with its own drive.

Zum besseren Verständnis soll die Erfindung nachfolgend unter Bezug auf die Zeichnungen erläutert werden.
Dabei zeigt:

  • Fig.1 einen Kran mit einer Ausleger-Gegenausleger-Anordnung,
  • Fig.2 einen Gegengewichtswagen und
  • Fig.3 die Anordnung von verfahrbaren und nicht verfahrbaren Gegengewichtswagenkomponenten.
For a better understanding of the invention will be explained below with reference to the drawings.
Showing:
  • Fig.1 a crane with a boom counterjib assembly,
  • Fig.2 a counterweight car and
  • Figure 3 the arrangement of movable and non-movable Counterweight carriage components.

Das verfahrbare Gegengewicht wird nachfolgend auch als Gegengewichtswagen bezeichnet.The movable counterweight is also referred to below as a counterweight car.

Im vorliegenden Fall kommt eine Lösung aus bestehenden verfahrbaren und bestehenden oder eigens ausgeführten, nicht verfahrbaren Gegengewichtkomponenten zum Einsatz:In the present case, a solution consisting of existing movable and existing or specially designed, non-movable counterweight components is used:

Den gültigen Vorschriften entsprechend ist das Gegengewicht so gewählt, dass den Nenntragfähigkeiten zugeordnete Prüflasten gehoben werden können, d.h. bei Nennlast ist nur ein Teil dieses Gegengewichts aktiviert (abgehoben, ohne direkten oder indirekten Bodenkontakt). Lediglich der Rest, die sog. Prüflastreserve, muss beim Drehen oder Verfahren des Kranes mit angehängter Last entsprechend mitbewegt werden. Dafür reicht ein vorhandener, serienmäßiger Gegengewichtswagen 9 aus, der durch zusätzliches Gegengewicht 13 ergänzt wird. Da der Gegengewichtswagen das vergrößerte Gegengewicht nicht tragen kann, bleibt es zunächst auf dem Boden stehen und wird erfindungsgemäß mit der Mastspitze verbunden, so dass zuerst dieser Teil des Gegengewichtes aktiviert wird und erst anschließend das auf dem Gegengewichtswagen befindliche Gegengewicht.In accordance with current regulations, the counterweight is selected so that test loads associated with the rated capacities can be lifted, i. at nominal load, only part of this counterweight is activated (lifted off, without direct or indirect contact with the ground). Only the remainder, the so-called test load reserve, must be moved accordingly when turning or moving the crane with the load attached. For an existing, standard counterweight 9 is sufficient, which is supplemented by additional counterweight 13. Since the counterweight car can not carry the increased counterweight, it initially stops on the ground and according to the invention is connected to the mast top, so that first this part of the counterweight is activated and only then the counterweight located on the counterweight car.

Die Ausgestaltung des vorhandenen Gegengewichtswagens 9 vorzugsweise mit eigenem Antrieb hat zusätzlich den Vorteil, dass im Grundgerät keine zusätzlichen Drehwerkseinrichtungen benötigt werden, um die erzeugten größeren Massen mitzudrehen. Die auf dem Gegengewichtswagen zu jeder Zeit vorhandene Prüflastreserve stellt sicher, dass Schlupf effektiv vermieden wird und die Antriebsleistung übertragen werden kann.The design of the existing counterweight carriage 9, preferably with its own drive additionally has the advantage that in the basic unit no additional rotary mechanism devices are needed to turn the larger masses generated. The test load reserve available on the counterweight car at all times ensures that slippage is effectively avoided and that the drive power can be transmitted.

Durch den Einsatz des erfindungsgemäßen Krans mit einem Gegengewichtswagen, der nicht für das gesamte Superlift-Gegengewicht ausgelegt werden muss, ergeben sich nachstehende Vorteile:

  1. a. Erzielung größtmöglicher Traglasten und Radien bei geringem zusätzlichen Investitionsvolumen (nur Umbauteile müssen vorgehalten werden),
  2. b. Effektivere Nutzung der Grundinvestition, da weiterhin Kranarbeiten in der ursprünglichen Kapazität möglich sind,
  3. c. Es müssen nur die Gegengewichts-Erweiterungsteile von einer Baustelle zur nächsten Baustelle transportiert werden, um an verschiedenen Stellen Krane unterschiedlicher Kapazität, insbesondere Großkrane errichten zu können.
By using the crane according to the invention with a counterweight car, which does not have to be designed for the entire superlift counterweight, the following advantages result:
  1. a. Achieving the highest possible payloads and radii at a low additional investment volume (only conversion parts have to be provided),
  2. b. More effective use of the base investment as crane work continues to be possible in the original capacity
  3. c. Only the counterweight extension parts have to be transported from one construction site to the next construction site in order to be able to set up cranes of different capacities, in particular large cranes, at various points.

Claims (18)

  1. Crane, especially a large mobile crane, with a superstructure (3), with at least one main boom (1) and at least one derrick boom (2) and with a counterweight (5), which is separate from the superstructure (3) and connected to the top of the derrick boom (2),
    characterized
    in that the superstructure (3) has at least one degree of freedom of movement versus the ground or its foundation structure, and in that the counterweight separate from the basic machine is divided into a travelling counterweight (5, 9, 10) and a non-travelling counterweight (13, 16), which are connected to the derrick boom (2) in such a way that the non-travelling counterweight (13, 16) can be activated before the travelling counterweight (5, 9, 10).
  2. Crane according to claim 1,
    characterized
    in that the lifting capacity of the travelling counterweight (5, 9, 10) is less than the maximum superlift counterweight possible for the particular crane in question and in that the non-travelling counterweight (13, 16) makes up the difference between that and the maximum possible superlift weight.
  3. Crane according to claim 1 and 2,
    characterized
    in that a crossbeam (14), which is connected in the upward direction to the tip of the derrick boom (2) and in the downward direction both to the travelling counterweight (5, 9, 10) and to the non-travelling counterweight (13, 16), is provided above the travelling counterweight (5, 9, 10).
  4. Crane according to claim 3,
    characterized
    in that the length of the connection between the crossbeam (14) and the travelling counterweight is selected so that the travelling counterweight is not activated until after the non-travelling counterweight has been lifted from the ground, the connection otherwise remaining free of force.
  5. Crane according to claim 3,
    characterized
    in that the crossbeam (14) is connected to the travelling counterweight by a hydraulic cylinder.
  6. Crane according to claim 3,
    characterized
    in that the crossbeam (14) is connected to the travelling counterweight by a reeved cable.
  7. Crane according to one of the preceding claims,
    characterized
    in that the counterweight consists of several travelling and non-travelling units arranged next to each other, one behind the other, or with an offset from each other.
  8. Crane according to claim 7,
    characterized
    in that the several travelling and non-travelling counterweights are connected to each other permanently or detachably by one or more crossbeams, the counterweights being arranged next to each other, one behind the other, or with an offset from each other.
  9. Crane according to one of the preceding claims,
    characterized
    in that the travelling counterweight (9) is equipped with its own drive.
  10. Crane according to one of the preceding claims,
    characterized
    in that the non-travelling part of the counterweight is made up of individual elements arranged next to the travelling counterweight.
  11. Crane according to one of the preceding claims,
    characterized
    in that the superstructure (3) is mounted on a travelling undercarriage (4) so that it has the ability to rotate in a horizontal plane.
  12. Crane according to claim 11,
    characterized
    in that the undercarriage (4) can travel over the ground by means of crawlers or wheels.
  13. Crane according to one of the preceding claims,
    characterized
    in that the superstructure is mounted on a non-travelling chassis with the ability to rotate in a horizontal plane.
  14. Crane according to one of the preceding claims,
    characterized
    in that the superstructure is mounted on a floatable pontoon or ship with the ability to rotate in a horizontal plane.
  15. Crane according to one of the preceding claims,
    characterized
    in that the superstructure is designed as a ring-lift unit and is mounted on an open or closed ring-shaped track resting on the ground with the ability to rotate in a horizontal plane.
  16. Crane according to one of the preceding claims,
    characterized
    in that the superstructure is designed as a ring-lift unit and is mounted on an open or closed ring-shaped track resting on a floatable pontoon with the ability to rotate in a horizontal plane.
  17. Crane according to one of the preceding claims,
    characterized
    in that, in addition, the basic machine makes a contribution to the stability moment of the overall crane.
  18. Crane according to one of the preceding claims,
    characterized
    in that, in addition, the superstructure is equipped with a counterweight.
EP06805447A 2005-11-17 2006-10-13 Modular counterweight carriage for cranes, in particular for large cranes Active EP1934129B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005055693 2005-11-17
DE102006010488A DE102006010488A1 (en) 2005-11-17 2006-03-01 Modular counterweight trolley for cranes, especially for large cranes
PCT/DE2006/001844 WO2007056970A1 (en) 2005-11-17 2006-10-13 Modular counterweight carriage for cranes, in particular for large cranes

Publications (2)

Publication Number Publication Date
EP1934129A1 EP1934129A1 (en) 2008-06-25
EP1934129B1 true EP1934129B1 (en) 2009-06-17

Family

ID=37668192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805447A Active EP1934129B1 (en) 2005-11-17 2006-10-13 Modular counterweight carriage for cranes, in particular for large cranes

Country Status (6)

Country Link
US (1) US8162160B2 (en)
EP (1) EP1934129B1 (en)
CN (1) CN101309850B (en)
AT (1) ATE433944T1 (en)
DE (2) DE102006010488A1 (en)
WO (1) WO2007056970A1 (en)

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US8985353B2 (en) 2006-10-27 2015-03-24 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
DE102014012661A1 (en) 2014-08-22 2016-02-25 Liebherr-Werk Ehingen Gmbh Method of operating a crane and crane
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
US10179722B2 (en) 2014-01-27 2019-01-15 Manitowoc Crane Companies, Llc Lift crane with improved movable counterweight
US10183848B2 (en) 2014-01-27 2019-01-22 Manitowoc Crane Companies, Llc Height adjustment mechanism for an auxiliary member on a crane
WO2021179668A1 (en) * 2020-03-13 2021-09-16 徐工集团工程机械股份有限公司 Crane

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US8985353B2 (en) 2006-10-27 2015-03-24 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
US10179722B2 (en) 2014-01-27 2019-01-15 Manitowoc Crane Companies, Llc Lift crane with improved movable counterweight
US10183848B2 (en) 2014-01-27 2019-01-22 Manitowoc Crane Companies, Llc Height adjustment mechanism for an auxiliary member on a crane
DE102014012661A1 (en) 2014-08-22 2016-02-25 Liebherr-Werk Ehingen Gmbh Method of operating a crane and crane
US10124993B2 (en) 2014-08-22 2018-11-13 Liebherr-Werk Ehingen Gmbh Method for operating a crane and crane
WO2021179668A1 (en) * 2020-03-13 2021-09-16 徐工集团工程机械股份有限公司 Crane

Also Published As

Publication number Publication date
US20090272708A1 (en) 2009-11-05
CN101309850B (en) 2011-02-09
DE502006004025D1 (en) 2009-07-30
ATE433944T1 (en) 2009-07-15
CN101309850A (en) 2008-11-19
DE102006010488A1 (en) 2007-05-24
EP1934129A1 (en) 2008-06-25
WO2007056970A1 (en) 2007-05-24
US8162160B2 (en) 2012-04-24

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