EP1752411A1 - Crane - Google Patents

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Publication number
EP1752411A1
EP1752411A1 EP06009837A EP06009837A EP1752411A1 EP 1752411 A1 EP1752411 A1 EP 1752411A1 EP 06009837 A EP06009837 A EP 06009837A EP 06009837 A EP06009837 A EP 06009837A EP 1752411 A1 EP1752411 A1 EP 1752411A1
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EP
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Prior art keywords
crane
motor
undercarriage
superstructure
winch
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EP06009837A
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German (de)
French (fr)
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EP1752411B1 (en
Inventor
Hans-Dieter Dipl.-Ing. Willim
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Liebherr Werk Ehingen GmbH
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Liebherr Werk Ehingen GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/18Cranes 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
    • B66C23/36Cranes 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 mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/38Cranes 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 mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with separate prime movers for crane and vehicle

Definitions

  • the present invention relates to a crane with an undercarriage on which a superstructure is rotatably mounted about an upright axis, and a plurality of preferably hydraulic control units for generating crane movements and provided on the superstructure crane motor for driving the control units.
  • the present invention seeks to remedy this situation. It is the object of the invention to provide an improved crane of the type mentioned above, which avoids the disadvantages of the prior art and the latter develops in an advantageous manner. Preferably, for the transport of the crane its weight and possibly its dimensions should be significantly reduced, without delaying the buildability of the crane at the site noticeably.
  • the crane motor provided on the superstructure, which usually can be a powerful diesel engine, disassembled for transport and to transport it separately from the rest of the superstructure.
  • the crane motor is mounted on a superstructure frame part that can be dismounted from the rest of the crane superstructure and transported separately. So far, it has always been assumed that the crane engine must remain on the superstructure in order to be able to drive the control units with the crane motor for the construction of the crane at the construction site and to be able to move the crane accordingly. However, this is surprisingly not necessary contrary to the previous insistence of the experts. Due to the dismountability of the crane motor and its separate transport, the weight of the superstructure can be considerably reduced. In addition, there is a smaller space requirement of the revolving stage.
  • the crane motor is mounted on a winch frame which carries at least one crane winch.
  • This winch frame, together with the crane motor mounted thereon and the at least one crane winch, can be disassembled for transporting from the remaining superstructure of the crane, in particular can be scraped off, so that the winch frame, the crane motor and the at least one crane winch are separate Transport unit, for example, on a suitable truck can be loaded.
  • the arrangement of the crane motor on the demountable winch frame achieved in addition to the weight savings for the transport in particular a reduction in space requirements in the revolving stage itself.
  • the invention is provided in a further development that provided for the basic functions of the crane actuators, which are arranged on the superstructure, connectable by a drive connection with a undercarriage engine and the latter are drivable. It is advantageously not provided that these actuators always, ie in regular crane operation, are driven by the undercarriage engine, but that the actuators are selectively driven by the provided on the uppercar crane engine and the undercarriage motor.
  • all the actuators on the crane superstructure with the exception of the removable winch frame arranged winch-Stellaggregate of the undercarriage engine so to speak are alternatively driven, if the actual crane motor on the superstructure is not yet grown.
  • the control units comprise according to an embodiment of the invention, a plurality of pumps which are connected to a superstructure arranged on the pump transfer gear, which is selectively connectable to the provided on the superstructure crane engine or the undercarriage engine.
  • the pump distributor gearbox may be preceded by a valve device which has a connection for the undercarriage motor and has a connection for the crane engine.
  • the advantageously hydraulic drive connections can optionally be switched through to the crane motor and to the undercarriage motor.
  • the drive connection between the undercarriage engine and the positioning units arranged on the superstructure can advantageously extend through the rotary transmission leadthrough, in particular the slewing ring, between the undercarriage and the superstructure.
  • the crane 1 shown in Figures 1 and 2 comprises an undercarriage 2, which may be formed substantially as a multi-axle truck, and a superstructure 3, which is arranged around an upright pivot axis 4 on the undercarriage 2.
  • FIG. 1 shows, a crane jib 5 is articulated up and down on the superstructure 3 about a lying rocking axis 6.
  • the crane motor 10 designed as a diesel engine is mounted on the winch frame 7.
  • the crane motor 10 is arranged laterally on the winch frame 7 next to the crane winches 8 and 9.
  • the lateral arrangement of the crane motor 10 increases the superstructure length and thus the necessary pivot radius in crane operation.
  • other arrangements of the crane motor 10 on the winch frame 7 are possible in principle.
  • control units on the winch frame 7 include the pumps P5 and P6, which serve to drive the two crane winches 8 and 9.
  • the control units on the non-degradable part of the superstructure 3 include the pump P1, P2, P3 and P4, of which the pump P1 drives a luffing cylinder to raise and lower the crane jib 5, the pump P2 drives a telescoping cylinder for telescoping the crane jib 5 , the pump P3 drives an auxiliary winch 12 and the pump P4 drives the slewing gear for rotating the superstructure 3.
  • Said pump P1 to P4 are connected to a pump distributor gear 13, which is arranged on the uppercarriage 3.
  • all the actuators ie the pumps P1 to P6, are driven by the crane motor 10 to generate the positioning movements of the crane.
  • the pumps P5 and P6 are connected directly to the winch frame 7 with the crane motor 10.
  • said crane motor 10 is connectable to the pump distributor gear 13 to drive the further pumps P1 to P4.
  • the pump distributor gear 13 is connected by a drive connection 15 through the rotary feedthrough between the undercarriage 2 and the uppercarriage 3 with the undercarriage motor 14.
  • the pump distributor gearbox 13 is preceded by a valve device 16, which on the one hand has a valve port A for connection to the undercarriage motor 14 and, on the other hand, a valve port B for connection to the crane motor 10.
  • valve device 16 When the valve device 16 releases the valve port A, the pump distributor gear 13 and thus the pumps P 1 to P 4 are driven by the undercarriage motor 14. On the other hand, if the valve device 16 switches to the valve connection B, the crane motor 10 on the winch frame 7 can drive the pump distributor gear 13 and thus the pumps P1 to P4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

Crane comprises a motor (10) positioned on a separately transported upper carriage frame part (7) which can be dismantled from the remaining upper carriage (3) for transport. Preferred Features: The motor is positioned on a winch frame which supports the crane winch. The motor, winch frame and crane winch can be dismantled from the remaining upper carriage and transported separately. Adjusting devices are arranged on the upper carriage and are connected to a drive unit.

Description

Die vorliegende Erfindung betrifft einen Kran mit einem Unterwagen, auf dem ein Oberwagen um eine aufrechte Achse drehbar angeordnet ist, sowie mehreren vorzugsweise hydraulischen Stellaggregaten zur Erzeugung von Kranbewegungen und einem am Oberwagen vorgesehenen Kranmotor zum Antreiben der Stellaggregate.The present invention relates to a crane with an undercarriage on which a superstructure is rotatably mounted about an upright axis, and a plurality of preferably hydraulic control units for generating crane movements and provided on the superstructure crane motor for driving the control units.

Bei Großkranen ist der Transport des Krans zur Baustelle aufgrund der von der Straßenverkehrsordnung vorgeschriebenen zulässigen Gesamtgewichte und Achslasten einerseits und der zulässigen Fahrzeugabmessungen andererseits problematisch, so dass bereits vorgeschlagen wurde, für den Transport des Krans besonders sperrige bzw. schwere Bauteile abzubauen und separat zu transportieren. So können beispielsweise der Oberwagenballast oder bei Fahrzeugkranen mit teleskopierbarem Ausleger an letzterem vorgesehene Abspannstützen für den Transport demontiert werden. Hierbei ist es jedoch nicht möglich, beliebige Komponenten des Krans abzubauen und separat zu transportieren, wenn an der jeweiligen Baustelle die Montage des Krans zügig erfolgen soll. Hierzu sollte der Kran nämlich zumindest soweit funktionstüchtig bleiben, dass er für die Montage verwendbar ist. Insbesondere bei Fahrzeug-Großkranen sind diese gegenläufigen Anforderungen bislang nicht in befriedigender Weise gelöst.In the case of large cranes, the transport of the crane to the construction site is problematic due to the permissible gross weights and axle loads prescribed by the Highway Code on the one hand and the permissible vehicle dimensions on the other hand, so it has already been proposed to dismantle and transport separately particularly bulky or heavy components for the transport of the crane. Thus, for example, the superstructure ballast or in mobile cranes with telescopic boom provided on the latter guy supports can be dismantled for transport. However, it is not possible to dismantle any components of the crane and to transport separately, if the installation of the crane should be done quickly at the respective site. For this purpose, the crane should at least remain functional so far that it can be used for assembly is. In particular, in large vehicle cranes these conflicting requirements have not been solved in a satisfactory manner.

Hier will die vorliegende Erfindung Abhilfe schaffen. Ihr liegt die Aufgabe zugrunde, einen verbesserten Kran der eingangs genannten Art zu schaffen, der Nachteile des Standes der Technik vermeidet und letzteren in vorteilhafter Weise weiterbildet. Vorzugsweise sollen für den Transport des Krans dessen Gewicht und ggf. seine Abmessungen deutlich reduzierbar sein, ohne die Aufbaubarkeit des Krans an der Baustelle spürbar zu verzögern.Here, the present invention seeks to remedy this situation. It is the object of the invention to provide an improved crane of the type mentioned above, which avoids the disadvantages of the prior art and the latter develops in an advantageous manner. Preferably, for the transport of the crane its weight and possibly its dimensions should be significantly reduced, without delaying the buildability of the crane at the site noticeably.

Diese Aufgabe wird erfindungsgemäß durch einen Kran gemäß Anspruch 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.This object is achieved by a crane according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

Es wird also überraschenderweise vorgeschlagen, den am Oberwagen vorgesehenen Kranmotor, der üblicherweise ein kräftiger Dieselmotor sein kann, für den Transport demontierbar anzuordnen und ihn vom restlichen Oberwagen separat zu transportieren. Erfindungsgemäß ist der Kranmotor an einem vom restlichen Kranoberwagen demontierbaren und separat transportierbaren Oberwagenrahmenteil gelagert. Bislang wurde immer davon ausgegangen, dass der Kranmotor am Oberwagen verbleiben muss, um für den Aufbau des Krans an der Baustelle mit dem Kranmotor die Stellaggregate antreiben zu können und den Kran entsprechend bewegen zu können. Dies ist jedoch entgegen dem bisherigen Beharren der Fachwelt überraschenderweise nicht notwendig. Durch die Demontierbarkeit des Kranmotors und dessen separaten Transport kann das Gewicht des Oberwagens beträchtlich reduziert werden. Zudem ergibt sich ein geringerer Raumbedarf der Drehbühne.It is therefore surprisingly proposed to dispose the crane motor provided on the superstructure, which usually can be a powerful diesel engine, disassembled for transport and to transport it separately from the rest of the superstructure. According to the invention, the crane motor is mounted on a superstructure frame part that can be dismounted from the rest of the crane superstructure and transported separately. So far, it has always been assumed that the crane engine must remain on the superstructure in order to be able to drive the control units with the crane motor for the construction of the crane at the construction site and to be able to move the crane accordingly. However, this is surprisingly not necessary contrary to the previous insistence of the experts. Due to the dismountability of the crane motor and its separate transport, the weight of the superstructure can be considerably reduced. In addition, there is a smaller space requirement of the revolving stage.

Insbesondere ist der Kranmotor an einem Windenrahmen gelagert, der zumindest eine Kranwinde trägt. Dieser Windenrahmen ist zusammen mit dem daran montierten Kranmotor und der zumindest einen Kranwinde für den Transport von dem restlichen Oberwagen des Krans demontierbar, insbesondere abbolzbar, so dass der Windenrahmen, der Kranmotor und die zumindest eine Kranwinde als separate Transporteinheit, beispielsweise auf einem geeigneten LKW, verladen werden können. Die Anordnung des Kranmotors an dem demontierbaren Windenrahmen erreicht neben der Gewichtsersparnis für den Transport insbesondere auch eine Reduzierung des Raumbedarfs in der Drehbühne selbst.In particular, the crane motor is mounted on a winch frame which carries at least one crane winch. This winch frame, together with the crane motor mounted thereon and the at least one crane winch, can be disassembled for transporting from the remaining superstructure of the crane, in particular can be scraped off, so that the winch frame, the crane motor and the at least one crane winch are separate Transport unit, for example, on a suitable truck can be loaded. The arrangement of the crane motor on the demountable winch frame achieved in addition to the weight savings for the transport in particular a reduction in space requirements in the revolving stage itself.

Um die Grundfunktionen des Krans bei der Kranmontage auch ohne den demontierten Kranmotor nutzen zu können, ist in Weiterbildung der Erfindung vorgesehen, dass die für die Grundfunktionen des Krans vorgesehenen Stellaggregate, die am Oberwagen angeordnet sind, durch eine Antriebsverbindung mit einem Unterwagenmotor verbindbar und von letzterem antreibbar sind. Dabei ist vorteilhafterweise nicht vorgesehen, dass diese Stellaggregate immer, also auch im regulären Kranbetrieb, von dem Unterwagenmotor angetrieben werden, sondern dass die Stellaggregate wahlweise von dem am Oberwagen vorgesehenen Kranmotor und dem Unterwagenmotor antreibbar sind.In order to use the basic functions of the crane in the crane installation without the dismounted crane engine, the invention is provided in a further development that provided for the basic functions of the crane actuators, which are arranged on the superstructure, connectable by a drive connection with a undercarriage engine and the latter are drivable. It is advantageously not provided that these actuators always, ie in regular crane operation, are driven by the undercarriage engine, but that the actuators are selectively driven by the provided on the uppercar crane engine and the undercarriage motor.

Insbesondere können in Weiterbildung der Erfindung alle Stellaggregate am Kranoberwagen mit Ausnahme der an dem abnehmbaren Windenrahmen angeordneten Winden-Stellaggregate von dem Unterwagenmotor sozusagen hilfsweise angetrieben werden, wenn der eigentliche Kranmotor am Oberwagen noch nicht angebaut ist. Insbesondere ist in Weiterbildung der Erfindung bei einem Kran mit wippbarem Teleskopausleger vorgesehen, dass zumindest der Wippantrieb zum Auf- und Niederwippen des Auslegers, der Teleskopierantrieb zum Teleskopieren des Auslegers und ein Drehwerksantrieb zum Drehen des Oberwagens relativ zum Unterwagen auch von dem Unterwagenmotor her antreibbar sind. Dies erlaubt einen Hilfs- oder Montagebetrieb des Krans, in dem der Ausleger aufgewippt und ggf. zur Eigenmontage weiterer Krankomponenten genutzt werden kann.In particular, in the invention, all the actuators on the crane superstructure, with the exception of the removable winch frame arranged winch-Stellaggregate of the undercarriage engine so to speak are alternatively driven, if the actual crane motor on the superstructure is not yet grown. In particular, it is provided in a further development of the invention in a crane with teetering telescopic boom, that at least the rocker drive for up and down rocking of the boom, the Teleskopierantrieb for telescoping the boom and a slewing drive for rotating the upper carriage relative to the undercarriage are also driven by the undercarriage forth. This allows an auxiliary or assembly operation of the crane, in which the boom can be tipped up and possibly used for self-assembly of other crane components.

Die Stellaggregate umfassen nach einer Ausführung der Erfindung mehrere Pumpen, die mit einem am Oberwagen angeordneten Pumpenverteilergetriebe verbunden sind, das wahlweise mit dem am Oberwagen vorgesehenen Kranmotor oder dem Unterwagenmotor verbindbar ist. Hierzu kann dem Pumpenverteilergetriebe eine Ventileinrichtung vorgeschaltet sein, die einen Anschluss für den Unterwagenmotor und einen Anschluss für den Kranmotor besitzt. Durch die Ventileinrichtung können die vorteilhafterweise hydraulischen Antriebsverbindungen wahlweise zum Kranmotor und zum Unterwagenmotor durchgeschaltet werden.The control units comprise according to an embodiment of the invention, a plurality of pumps which are connected to a superstructure arranged on the pump transfer gear, which is selectively connectable to the provided on the superstructure crane engine or the undercarriage engine. For this purpose, the pump distributor gearbox may be preceded by a valve device which has a connection for the undercarriage motor and has a connection for the crane engine. By means of the valve device, the advantageously hydraulic drive connections can optionally be switched through to the crane motor and to the undercarriage motor.

Die Antriebsverbindung zwischen dem Unterwagenmotor und den am Oberwagen angeordneten Stellaggregaten kann sich vorteilhafterweise durch die Drehdurchführung, insbesondere den Drehkranz, zwischen dem Unterwagen und dem Oberwagen hindurch erstrecken.The drive connection between the undercarriage engine and the positioning units arranged on the superstructure can advantageously extend through the rotary transmission leadthrough, in particular the slewing ring, between the undercarriage and the superstructure.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. In den Zeichnungen zeigen:

Fig. 1:
eine schematische Seitenansicht des Oberwagens eines Krans nach einer bevorzugten Ausführung der Erfindung, an dem ein Kranausleger wippbar angelenkt ist und ein Windenrahmen mit daran montiertem Kranmotor angebolzt ist,
Fig. 2:
eine Draufsicht auf den Oberwagen des Krans aus Fig. 2, die den angebolzten Windenrahmen mit den daran gelagerten Kranwinden und den Kranmotor zeigt, und
Fig. 3:
eine schematische Darstellung der Anordnung und Verschaltung des am Unterwagen angeordneten Unterwagenmotors, der am Oberwagen angeordneten Stellaggregate sowie des Kranmotors, der an dem mit dem Oberwagen verbindbaren Windenrahmen vorgesehen ist.
The invention will be explained in more detail below with reference to a preferred embodiment and associated drawings. In the drawings show:
Fig. 1:
a schematic side view of the upper carriage of a crane according to a preferred embodiment of the invention, in which a crane jib is articulated rockably and a winch frame is bolted thereto with mounted crane engine,
Fig. 2:
a plan view of the upper carriage of the crane of Fig. 2, showing the bolted winch frame with the crane cranes mounted thereon and the crane motor, and
3:
a schematic representation of the arrangement and interconnection of the arranged on the undercarriage undercarriage engine, which is arranged on the uppercarriage actuators and the crane motor, which is provided on the connectable to the uppercarriage winch frame.

Der in den Figuren 1 und 2 gezeigte Kran 1 umfasst einen Unterwagen 2, der im wesentlichen als mehrachsiger LKW ausgebildet sein kann, sowie einen Oberwagen 3, der um eine aufrechte Drehachse 4 auf dem Unterwagen 2 angeordnet ist.The crane 1 shown in Figures 1 and 2 comprises an undercarriage 2, which may be formed substantially as a multi-axle truck, and a superstructure 3, which is arranged around an upright pivot axis 4 on the undercarriage 2.

Wie Figur 1 zeigt, ist an dem Oberwagen 3 ein Kranausleger 5 um eine liegende Wippachse 6 auf- und niederwippbar angelenkt. An dem rückwärtigen Ende des Oberwagens 3 ist an diesem ein Windenrahmen 7 lösbar befestigt, insbesondere angebolzt, der die beiden Kranwinden 8 und 9 trägt.As FIG. 1 shows, a crane jib 5 is articulated up and down on the superstructure 3 about a lying rocking axis 6. At the rear end of the Superstructure 3 is detachably attached to this a winch frame 7, in particular gebolzt, which carries the two crane winches 8 and 9.

Weiterhin ist an dem Windenrahmen 7 der als Dieselmotor ausgebildete Kranmotor 10 gelagert. Wie Figur 2 zeigt, ist in der gezeichneten Ausführung der Kranmotor 10 seitlich an dem Windenrahmen 7 neben den Kranwinden 8 und 9 angeordnet. Insofern als der Windenrahmen 7 zusammen mit dem Kranmotor 10 für den Transport durch Lösen der Bolzen 11 abgebaut wird, wird die Transportbreite des Oberwagens nicht beeinträchtigt, andererseits vergrößert die seitliche Anordnung des Kranmotors 10 die Oberwagenlänge und damit den notwendigen Schwenkradius im Kranbetrieb nicht. Andere Anordnungen des Kranmotors 10 an dem Windenrahmen 7 sind jedoch grundsätzlich möglich.Furthermore, the crane motor 10 designed as a diesel engine is mounted on the winch frame 7. As FIG. 2 shows, in the illustrated embodiment, the crane motor 10 is arranged laterally on the winch frame 7 next to the crane winches 8 and 9. Insofar as the winch frame 7 is reduced together with the crane motor 10 for transport by loosening the bolt 11, the transport width of the superstructure is not affected, on the other hand, the lateral arrangement of the crane motor 10 increases the superstructure length and thus the necessary pivot radius in crane operation. However, other arrangements of the crane motor 10 on the winch frame 7 are possible in principle.

Wie Figur 3 zeigt, sind an dem Oberwagen 3 diverse hydraulische Stellaggregate angeordnet, die auf den Windenrahmen 7 und den nicht abbaubaren Teil des Oberwagens 3 verteilt sind. Insbesondere umfassen die Stellaggregate auf dem Windenrahmen 7 die Pumpen P5 und P6, die dem Antrieb der beiden Kranwinden 8 und 9 dienen. Andererseits umfassen die Stellaggregate auf dem nicht abbaubaren Teil des Oberwagens 3 die Pumpe P1, P2, P3 und P4, von denen die Pumpe P1 einen Wippzylinder zum Auf- und Niederwippen des Kranauslegers 5 antreibt, die Pumpe P2 einen Teleskopierzylinder zum Austeleskopieren des Kranauslegers 5 antreibt, die Pumpe P3 eine Hilfswinde 12 antreibt und die Pumpe P4 das Drehwerk zum Drehen des Oberwagens 3 antreibt. Die genannten Pumpe P1 bis P4 sind mit einem Pumpenverteilergetriebe 13 verbunden, das an dem Oberwagen 3 angeordnet ist.As FIG. 3 shows, various hydraulic control units are arranged on the uppercarriage 3, which are distributed on the winch frame 7 and the non-degradable part of the uppercarriage 3. In particular, the control units on the winch frame 7 include the pumps P5 and P6, which serve to drive the two crane winches 8 and 9. On the other hand, the control units on the non-degradable part of the superstructure 3 include the pump P1, P2, P3 and P4, of which the pump P1 drives a luffing cylinder to raise and lower the crane jib 5, the pump P2 drives a telescoping cylinder for telescoping the crane jib 5 , the pump P3 drives an auxiliary winch 12 and the pump P4 drives the slewing gear for rotating the superstructure 3. Said pump P1 to P4 are connected to a pump distributor gear 13, which is arranged on the uppercarriage 3.

Im regulären Kranbetrieb werden sämtliche Stellaggregate, also die Pumpen P1 bis P6, zur Erzeugung der Stellbewegungen des Krans von dem Kranmotor 10 angetrieben. Hierzu sind die Pumpen P5 und P6 unmittelbar an dem Windenrahmen 7 mit dem Kranmotor 10 verbunden. Weiterhin ist der genannte Kranmotor 10 mit dem Pumpenverteilergetriebe 13 verbindbar, um die weiteren Pumpen P1 bis P4 anzutreiben.In regular crane operation, all the actuators, ie the pumps P1 to P6, are driven by the crane motor 10 to generate the positioning movements of the crane. For this purpose, the pumps P5 and P6 are connected directly to the winch frame 7 with the crane motor 10. Furthermore, said crane motor 10 is connectable to the pump distributor gear 13 to drive the further pumps P1 to P4.

Wird der Kranmotor 10 zusammen mit dem Windenrahmen 7 und den am Windenrahmen 7 gelagerten Kranwinden 8 und 9 sowie den Pumpen P5 und P6 zum Zwecke des Transports abgebolzt und vom Oberwagen 3 abgenommen, können die am Oberwagen 3 verbleibenden Stellaggregate, also die Pumpen P1 bis P4 von dem Unterwagenmotor 14 angetrieben werden. Das Pumpenverteilergetriebe 13 ist durch eine Antriebsverbindung 15 durch die Drehdurchführung zwischen Unterwagen 2 und Oberwagen 3 mit dem Unterwagenmotor 14 verbunden. Um zwischen Kranmotorantrieb und Unterwagenmotorantrieb umschalten zu können, ist dem Pumpenverteilergetriebe 13 eine Ventileinrichtung 16 vorgeschaltet, die einerseits einen Ventilanschluss A zur Verbindung mit dem Unterwagenmotor 14 und andererseits einen Ventilanschluss B zur Verbindung mit dem Kranmotor 10 besitzt. Schaltet die Ventileinrichtung 16 den Ventilanschluss A frei, wird das Pumpenverteilergetriebe 13 und damit die Pumpen P1 bis P4 vom Unterwagenmotor 14 her angetrieben. Schaltet hingegen die Ventileinrichtung 16 auf den Ventilanschluss B, kann der Kranmotor 10 am Windenrahmen 7 das Pumpenverteilergetriebe 13 und damit die Pumpen P1 bis P4 antreiben.If the crane motor 10 together with the winch frame 7 and the crane winches mounted on the winch frame 8 and 9 and the pumps P5 and P6 for the purpose of transport and removed from the superstructure 3, the remaining on the superstructure 3 Stellaggregate, so the pumps P1 to P4 be driven by the undercarriage motor 14. The pump distributor gear 13 is connected by a drive connection 15 through the rotary feedthrough between the undercarriage 2 and the uppercarriage 3 with the undercarriage motor 14. In order to switch between crane motor drive and undercarriage motor drive, the pump distributor gearbox 13 is preceded by a valve device 16, which on the one hand has a valve port A for connection to the undercarriage motor 14 and, on the other hand, a valve port B for connection to the crane motor 10. When the valve device 16 releases the valve port A, the pump distributor gear 13 and thus the pumps P 1 to P 4 are driven by the undercarriage motor 14. On the other hand, if the valve device 16 switches to the valve connection B, the crane motor 10 on the winch frame 7 can drive the pump distributor gear 13 and thus the pumps P1 to P4.

Über den Unterwagenmotor 14 kann zum einen bei der Montage des Krans dieser mit verringerter Geschwindigkeit arbeiten. Zum anderen ermöglicht der Anschluss des Unterwagenmotors 14 an die Stellaggregate am Oberwagen 3 darüber hinaus einen Notbetrieb, wenn der Kranmotor 10 ausfallen sollte.On the undercarriage motor 14, on the one hand during assembly of the crane this work at a reduced speed. On the other hand, the connection of the undercarriage motor 14 to the control units on the uppercarriage 3 moreover allows an emergency operation when the crane engine 10 should fail.

Claims (9)

Kran mit einem Unterwagen (2), auf dem ein Oberwagen (3) um eine aufrechte Achse (4) drehbar angeordnet ist, sowie mehreren vorzugsweise hydraulischen Stellaggregaten (P1, P2, P3, P4, P5, P6) zur Erzeugung von Kranbewegungen und einem am Oberwagen (3) vorgesehenen Kranmotor (10) zum Antreiben der Stellaggregate (P1, P2, P3, P4, P5, P6), dadurch gekennzeichnet, dass der Kranmotor (10) an einem zum Transport vom restlichen Oberwagen demontierbaren, separat transportierbaren Oberwagenrahmenteil (7) gelagert ist.Crane with an undercarriage (2) on which a superstructure (3) about an upright axis (4) is rotatably arranged, and a plurality of preferably hydraulic control units (P1, P2, P3, P4, P5, P6) for generating crane movements and a provided on the uppercarriage (3) crane motor (10) for driving the control units (P1, P2, P3, P4, P5, P6), characterized in that the crane motor (10) on a removable for transport from the rest of the uppercarriage, separately transportable superstructure frame part ( 7) is stored. Kran nach dem vorhergehenden Anspruch, wobei der Kranmotor (10) an einem Windenrahmen (7) gelagert ist, der zumindest eine Kranwinde (8, 9) trägt, und/oder der Kranmotor (10), der Windenrahmen (7) und die zumindest eine Kranwinde (8, 9) als Transporteinheit vom restlichen Oberwagen (3) demontierbar und separat transportierbar sind.Crane according to the preceding claim, wherein the crane motor (10) is mounted on a winch frame (7) carrying at least one crane winch (8, 9) and / or the crane motor (10), the winch frame (7) and the at least one Crane winch (8, 9) as a transport unit from the rest of the uppercarriage (3) can be removed and transported separately. Kran nach einem der vorhergehenden Ansprüche, wobei zumindest eines der Stellaggregate (P1, P2, P3, P4), die am Oberwagen (3) angeordnet sind, durch eine Antriebsverbindung (15) mit einem Unterwagenmotor (14) verbindbar und von letzterem antreibbar ist.Crane according to one of the preceding claims, wherein at least one of the adjusting units (P1, P2, P3, P4), which are arranged on the superstructure (3), by a drive connection (15) with a undercarriage motor (14) connectable and can be driven by the latter. Kran nach einem der vorhergehenden Ansprüche, wobei zumindest eines der Stellaggregate (P1, P2, P3, P4), die am Oberwagen (3) angeordnet sind, wahlweise von dem am Oberwagen (3) vorgesehenen Kranmotor (10) und dem Unterwagenmotor (14) antreibbar ist.Crane according to one of the preceding claims, wherein at least one of the adjusting units (P1, P2, P3, P4), which are arranged on the superstructure (3), optionally of the crane motor (10) provided on the superstructure (3) and the undercarriage motor (14). is drivable. Kran nach einem der vorhergehenden Ansprüche, wobei die Antriebsverbindung (15) zwischen dem Unterwagenmotor (14) und den am Oberwagen (3) angeordneten Stellaggregaten (P1, P2, P3, P4) hydraulisch ausgebildet ist.Crane according to one of the preceding claims, wherein the drive connection (15) between the undercarriage motor (14) and on the upper carriage (3) arranged adjusting units (P1, P2, P3, P4) is formed hydraulically. Kran nach einem der vorhergehenden Ansprüche, wobei die Antriebsverbindung (15) zwischen dem Unterwagenmotor (14) und den am Oberwagen (3) angeordneten Stellaggregaten (P1, P2, P3, P4) sich durch die Drehdurchführung zwischen dem Oberwagen (3) und dem Unterwagen (2) erstreckt.Crane according to one of the preceding claims, wherein the drive connection (15) between the undercarriage motor (14) and on the upper carriage (3) arranged adjusting units (P1, P2, P3, P4) through the rotary feedthrough between the uppercarriage (3) and the lowercarriage (2) extends. Kran nach einem der vorhergehenden Ansprüche, wobei den am Oberwagen (3) angeordneten Stellantriebe (P1, P2, P3, P4) eine Ventileinrichtung (16) vorgeschaltet ist, durch die die Stellantriebe (P1, P2, P3, P4) wahlweise mit dem Unterwagenmotor (14) und dem Kranmotor (10) verbindbar sind.Crane according to one of the preceding claims, wherein arranged on the upper carriage (3) actuators (P1, P2, P3, P4) is preceded by a valve device (16) through which the actuators (P1, P2, P3, P4) optionally with the undercarriage motor (14) and the crane motor (10) are connectable. Kran nach einem der vorhergehenden Ansprüche, wobei die Stellaggregate mehrere Pumpen (P1, P2, P3, P4) umfassen, die mit einem am Oberwagen angeordneten Pumpenverteilergetriebe (13) verbunden sind, und wobei das Pumpenverteilergetriebe (13) wahlweise mit dem Kranmotor (10) oder dem Unterwagenmotor (14) verbindbar ist.Crane according to one of the preceding claims, wherein the control units comprise a plurality of pumps (P1, P2, P3, P4), which are connected to a pump distributor gearbox (13) arranged on the uppercarriage, and wherein the pump distributor gearbox (13) is optionally connected to the crane motor (10). or the undercarriage motor (14) is connectable. Kran nach einem der vorhergehenden Ansprüche, wobei alle Stellaggregate (P1, P2, P3, P4) mit Ausnahme der am abnehmbaren Windenrahmen (7) angeordneten Winden-Stellaggregate (P5, P6) von dem Unterwagenmotor (14) antreibbar sind, insbesondere ein Wippantrieb, ein Teleskopierantrieb und ein Drehwerksantrieb von dem Unterwagenmotor (14) her antreibbar sind.Crane according to one of the preceding claims, wherein all control units (P1, P2, P3, P4) with the exception of the removable winch frame (7) arranged winch control units (P5, P6) of the undercarriage motor (14) are driven, in particular a rocker drive, a telescopic drive and a slewing drive can be driven by the undercarriage motor (14).
EP06009837A 2005-07-21 2006-05-12 Crane Expired - Fee Related EP1752411B1 (en)

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JP2013032224A (en) * 2011-07-29 2013-02-14 Liebherr Werk Ehingen Gmbh Driving device for crane
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EP2377802A1 (en) * 2010-04-15 2011-10-19 Terex Demag GmbH Crane with an auxiliary power unit
JP2013032224A (en) * 2011-07-29 2013-02-14 Liebherr Werk Ehingen Gmbh Driving device for crane
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EP1752411B1 (en) 2011-03-30
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