EP2582608B1 - Vehicle crane - Google Patents

Vehicle crane Download PDF

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Publication number
EP2582608B1
EP2582608B1 EP20110738578 EP11738578A EP2582608B1 EP 2582608 B1 EP2582608 B1 EP 2582608B1 EP 20110738578 EP20110738578 EP 20110738578 EP 11738578 A EP11738578 A EP 11738578A EP 2582608 B1 EP2582608 B1 EP 2582608B1
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EP
European Patent Office
Prior art keywords
crane
cable
compensation device
arms
winch
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EP20110738578
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German (de)
French (fr)
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EP2582608A1 (en
Inventor
Walter Haberl
Erich Wimmer
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Palfinger AG
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Palfinger AG
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Priority to PL11738578T priority Critical patent/PL2582608T3/en
Publication of EP2582608A1 publication Critical patent/EP2582608A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/10—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for preventing cable slack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Description

Die Erfindung betrifft einen Fahrzeugkran - insbesondere Knickarmkran - mit einem Hubarm und einem oder mehreren Knickarmen die in ihrer Geometrie zueinander veränderbar sind und einem an den Kranarmen führbaren oder geführten Lastseil.The invention relates to a vehicle crane - in particular articulated arm crane - with a lifting arm and one or more articulated arms which are mutually variable in geometry and one can be guided or guided on the crane arms load rope.

Weiters betrifft die Erfindung ein Verfahren zur Konstanthaltung einer Spannung eines Lastteils eines Fahrzeugkrans.Furthermore, the invention relates to a method for keeping constant a voltage of a load part of a vehicle crane.

Fahrzeugkräne sind bereits in einer Vielzahl vom Stand der Technik her bekannt.Mobile cranes are already known in a variety of the prior art ago.

Siehe z.B. EP 1431236 , US 4969789 und WO 2007000216 . Aufgabe der Erfindung ist es, einen gegenüber dem Stand der Technik verbesserten Fahrzeugkran anzugeben.See eg EP 1431236 . US 4969789 and WO 2007000216 , The object of the invention is to provide a comparison with the prior art improved vehicle crane.

Dies wird beim erfindungsgemäßen Fahrzeugkran durch die Merkmale des Anspruchs 1 gelöst.This is achieved in the vehicle crane according to the invention by the features of claim 1.

Durch die Seilumlenkungen an den Kranarmen entstehen Längenänderungen des Seiles beim Auseinanderklappen und beim Zusammenklappen des Kranes, durch die Kompensationsvorrichtung kann eine Seilüberbeanspruchung bzw. eine Schlaffseilbildung beim Auseinanderklappen und beim Zusammenklappen der Kranarme verhindert werden.Due to the cable deflections on the crane arms length changes of the rope when unfolding and collapsing the crane, by the compensation device can be a rope overuse or slack rope formation when unfolding and when folding the crane arms are prevented.

Weiters kann während des Kranbetriebes die Kompensationsvorrichtung ein im Wesentlichen lastfreies Seil synchron zu den zueinander verschwenkenden Kranarmen mitführen. Dies kann dadurch erzielt werden, dass die Kompensationsvorrichtung eine im Wesentlichen dauernde und konstante Spannung des Lastseiles bewirkt.Furthermore, during crane operation, the compensation device can carry a substantially load-free rope synchronously with the crane arms pivoting towards one another. This can be achieved in that the compensation device causes a substantially constant and constant tension of the load rope.

Weitere vorteilhafte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen definiert.Further advantageous embodiments of the invention are defined in the dependent claims.

Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass die Kompensationsvorrichtung bei der Änderung der Geometrie der Kranarme die Spannung des Lastseils auf einen im Wesentlichen andauernden und konstanten Wert regelt. Somit kann eine gleichmäßige Spannung des Lastseils bei jeglicher Änderung der Geometrie der Kranarme erzielt werden.According to a preferred embodiment, it can be provided that the compensation device in the change of the geometry of the crane arms, the tension of the load rope to a substantially constant and constant value regulates. Thus, a uniform tension of the load rope can be achieved with any change in the geometry of the crane arms.

Als besonders vorteilhaft hat es sich herausgestellt, wenn die Kompensationsvorrichtung hydraulisch ausgebildet ist. Da viele Fahrzeugkräne bereits über eine hydraulische Seilwinde verfügen, kann somit die Kompensationsvorrichtung in die bestehende Hydraulik aufgenommen werden.It has proven to be particularly advantageous if the compensation device is designed hydraulically. Since many mobile cranes already have a hydraulic winch, thus, the compensation device can be included in the existing hydraulics.

Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass die Kompensationsvorrichtung zumindest ein Druckbegrenzungsventil aufweist.According to a preferred embodiment it can be provided that the compensation device has at least one pressure relief valve.

Weiters kann bevorzugt vorgesehen sein, dass die Kompensationsvorrichtung zumindest ein Wegeventil - vorzugsweise ein 2/2 Wegeventil - aufweist.Furthermore, it can preferably be provided that the compensation device has at least one directional control valve - preferably a 2/2 way valve.

Als besonders vorteilhaft hat es sich erwiesen, wenn das zumindest eine Wegeventil elektrisch schaltbar ausgebildet ist. Somit wird eine einfache Art und Weise erzielbar, das Wegeventil aus- bzw- einzuschalten.It has proven to be particularly advantageous if the at least one directional control valve is designed to be electrically switchable. Thus, a simple way can be achieved to turn the directional control valve off or on.

Besonders bevorzugt kann vorgesehen sein, dass der Fahrzeugkran eine Seilwinde aufweist, wobei die Kompensationsvorrichtung zumindest teilweise an der Seilwinde ausgebildet ist. Dadurch wird eine kompakte Konstruktion erreichbar.Particularly preferably it can be provided that the vehicle crane has a winch, wherein the compensation device is at least partially formed on the winch. This achieves a compact design.

Als besonders vorteilhaft hat es sich dabei herausgestellt, wenn die Kompensationsvorrichtung mit der Seilwinde zusammenwirkt.It has proven to be particularly advantageous when the compensation device cooperates with the winch.

Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass die Seilwinde einen Antrieb aufweist, wobei die Kompensationsvorrichtung mit dem Antrieb der Seilwinde zusammenwirkt. Zusammen mit dem Antrieb der Seilwinde können bereits bestehende hydraulische Ausbildungen der Seilwinde genutzt und durch die Kompensationsvorrichtung beeinflusst werden.According to a preferred embodiment it can be provided that the winch has a drive, wherein the compensation device cooperates with the drive of the winch. Together with the drive of the winch already existing hydraulic training of the winch can be used and influenced by the compensation device.

Gemäß einem weiteren bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass die Kompensationsvorrichtung einen Wegaufnehmer aufweist, wobei der Wegaufnehmer am Seilende des Lastseils lösbar befestigbar ist.According to a further preferred embodiment it can be provided that the compensation device has a displacement transducer, wherein the displacement transducer is releasably securable at the cable end of the load rope.

Als besonders vorteilhaft hat es sich dabei erwiesen, wenn der Wegaufnehmer zumindest ein Federelement - vorzugsweise eine Gasfeder - aufweist. Federelemente sind eine besonders kostengünstige Variante, um Längenveränderungen kompensierbar zu machen.It has proved to be particularly advantageous if the position transducer has at least one spring element, preferably a gas spring. Spring elements are a particularly cost-effective variant to make changes in length compensated.

Schutz wird auch begehrt für ein Verfahren zur Konstanthaltung einer Spannung eines Lastseils eines Fahrzeugkrans, insbesondere eines Knickarmkrans, wobei das Lastseil an einem Hubarm und einem oder mehreren Knickarmen, die in ihrer Geometrie zueinander veränderbar sind, geführt wird, wobei

  • in einem Schritt das Lastseil durch eine Kompensationsvorrichtung mittels einer Seilwinde gespannt wird,
  • in einem weiteren Schritt - bei einer Änderung der Geometrie der Kranarme zueinander, welche eine Verkürzung der Führung des Lastseils an den Kranarmen verursacht - das Lastseil durch die Kompensationsvorrichtung auf die Seilwinde aufgewickelt wird,
  • in einem weiteren Schritt - bei einer weiteren Änderung der Geometrie der Kranarme zueinander, welche eine Verlängerung der Führung des Lastseils an den Kranarmen verursacht - das Lastseil durch die Kompensationsvorrichtung von der Seilwinde abgewickelt wird.
Protection is also desired for a method for maintaining a constant tension of a load rope of a vehicle crane, in particular a articulated crane, wherein the load cable on a lift arm and one or more articulated arms, which are mutually variable in geometry, is guided
  • in one step the load rope is stretched by a compensating device by means of a winch,
  • in a further step - in a change in the geometry of the crane arms to each other, which causes a shortening of the leadership of the load rope on the crane arms - the load rope is wound by the compensation device on the winch,
  • in a further step - in a further change in the geometry of the crane arms to each other, which causes an extension of the guide of the load rope to the crane arms - the load rope is unwound by the compensating device of the winch.

Weitere Einzelheiten und Vorteile der vorliegenden Erfindung werden anhand der Figurenbeschreibung unter Bezugnahme auf die in den Zeichnungen dargestellten Ausführungsbeispiele im Folgenden näher erläutert.Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings.

Darin zeigen:

Fig. 1
eine Seitenansicht eines Knickarmkranes mit Kompensationsvorrichtung,
Fig. 2
einen schematischen Schaltplan,
Fig. 3
eine Variante einer Kompensationsvorrichtung bei einem Fahrzeugkran in Seitenansicht,
Fig. 4
ein Fahrzeug mit einem Fahrzeugkran mit Kompensationsvorrichtung in Seitenansicht.
Show:
Fig. 1
a side view of a articulated crane with compensation device,
Fig. 2
a schematic circuit diagram,
Fig. 3
a variant of a compensation device in a vehicle crane in side view,
Fig. 4
a vehicle with a vehicle crane with compensation device in side view.

Figur 1 zeigt das Kranarmsystem 110 eines Fahrzeugkranes 100 mit einem Hubarm 106, daran gelenkig angeordnet ein ersten Knickarm 101 und an diesem ersten Knickarm 101 - welcher teleskopierbar ausgebildet ist - einen gelenkig angeordneten zweiter Knickarm 102. FIG. 1 shows the crane arm system 110 of a vehicle crane 100 with a lift arm 106, hinged thereto a first articulated arm 101 and at the first Knickarm 101 - which is telescopically formed - a hinged second articulated arm 102nd

Der Fahrzeugkran 100 weist dabei eine Seilwinde 104 auf. Diese Seilwinde 104 dient zum Heben von Lasten mittels des Lastseils 103.The vehicle crane 100 in this case has a winch 104. This winch 104 is used for lifting loads by means of the load cable 103rd

Mit der seitlichen Seilführung kann das Seil 103 beim Zusammenlegen des Kranarmsystems 110 des Fahrzeugkranes 100 eingeschert bleiben. Das Lastseil 103 wird beim Zusammenlegen am zweiten Knickarm 102 normalerweise an einem Fixpunkt 107 befestigt. Da das Lastseil 103 vom Hubarm 106 über den ersten Knickarm 101 und weiter von den Kranschubarmen des ersten Knickarmes 101 zum zweiter Knickarm 102 über mehrere Drehpunkte verläuft, ergibt sich beim Einklappen der Gelenke sowie beim Verschieben der Kranschubarme eine Verkürzung oder Verlängerung des Seiles 103.With the lateral cable guide, the cable 103 can remain reeved when folding the crane arm system 110 of the vehicle crane 100. The load cable 103 is normally fastened to a fixed point 107 during folding on the second articulated arm 102. Since the load cable 103 extends from the lift arm 106 via the first articulated arm 101 and further from the crane push arms of the first articulated arm 101 to the second articulated arm 102 via a plurality of pivot points, the folding of the articulated arms and the displacement of the crane push arms results in a shortening or lengthening of the cable 103.

Beim Stand der Technik ergibt diese Längenänderung ohne Korrektur durch den Kranführer einerseits Schlaffseil, andererseits steigt die Seilzugkraft bis die Überlastsicherung der Winde nach Erreichen der maximal zulässigen Seilzugkraft die Kranfunktionen abschaltet. Dies führt zu unnötig hohen Belastungen der Bauteile, weiters wird der Kranführer durch die vielen zu betätigenden Funktionen möglicherweise überfordert.In the prior art, this change in length results without correction by the crane operator on the one hand slack rope, on the other hand increases the cable traction force until the overload protection of the winch after reaching the maximum permissible cable traction shuts off the crane functions. This leads to unnecessarily high loads on the components, furthermore, the crane operator may be overwhelmed by the many functions to be operated.

Durch die Kompensationsvorrichtung 1 wird beim Zusammen- sowie Auseinanderlegen des Kranes 100 eine geringe Seilzugkraft auf das eingescherte und am Seilfixpunkt 107 eingehängte Lastseil 103 aufgebracht. Das Seil 103 wird von der Seilwinde 104 gespannt: ist weniger Seillänge zwischen Seilwinde 104 und Seilfixpunkt 107 notwendig, so wird dieses Seil 103 aufgewickelt, ist mehr Seillänge notwendig, so wird dieses Lastseil 103 von der Seilwinde 104 gezogen.As a result of the compensation device 1, when the crane 100 is brought together and laid apart, a small cable pulling force is applied to the reeved load cable 103 suspended on the cable fixation point 107. The rope 103 is stretched by the winch 104: less rope length between winch 104 and rope fixation point 107 is necessary, so this rope 103 is wound, more rope length is necessary, this load cable 103 is pulled by the winch 104.

Das in diesem Ausführungsbeispiel dargestellte Kranarmsystem 110 des Knickarmkranes 100 kann einerseits die beiden Knickarme 101 und 102 so zueinander verschwenken, dass in zumindest einer ihrer beiden Endstellungen die beiden Knickarme 101 und 102 im Wesentlichen parallel zueinander liegen. Ebenso können die beiden Kranarme 106 und 101 so zueinander verschwenken werden, dass auch diese in zumindest einer ihrer beiden Endstellungen die beiden Kranarme 106 und 101 im Wesentlichen parallel zueinander liegen.The crane arm system 110 of the articulated-arm crane 100 shown in this embodiment can, on the one hand, pivot the two articulated arms 101 and 102 relative to each other so that the two articulated arms 101 and 102 lie substantially parallel to one another in at least one of their two end positions. Likewise, the two crane arms 106 and 101 can be pivoted to each other, that too these are in at least one of its two end positions, the two crane arms 106 and 101 are substantially parallel to each other.

Dieser Knickarmkran 100 weist dabei eine Kompensationsvorrichtung 1 zum Spannen eines Lastseiles 103 auf, wobei die Kompensationsvorrichtung 1 mit der Seilwinde 104 des Knickarmkranes 100 zusammenwirkt - genau genommen mit dem Antrieb 105 (nicht dargestellt, siehe Fig. 2) der Seilwinde 104. Wie aus dieser Figur 1 ersichtlich ist, ist dabei die Kompensationsvorrichtung 1 an der Seilwinde 104 des Fahrzeugkranes 100 ausgebildet.This articulated crane 100 in this case has a compensation device 1 for tensioning a load cable 103, wherein the compensation device 1 with the winch 104 of the articulated crane 100 cooperates - in fact with the drive 105 (not shown, see Fig. 2 ) of the winch 104. Like this one FIG. 1 it can be seen, while the compensation device 1 is formed on the winch 104 of the vehicle crane 100.

Figur 2 zeigt einen schematischen Schaltplan der Seilwinde 104 inklusive Versorgung mit einem daran angeordneten Lastseil 103. Die Seilwinde 104 weist dabei einen Antrieb 105 auf. An diesem Antrieb 105 ist die Kompensationsvorrichtung 1 angeordnet. Gesteuert wird der Antrieb 105 über das Hauptsteuerventil 14 des Kranes zum Heben und zum Senken des Lastseiles 103 der Seilwinde 104. Der Flüssigkeitsbehälter 13 stellt dabei die notwendige Flüssigkeit - bevorzugterweise Öl - für den hydraulischen Antrieb 105 zur Verfügung. FIG. 2 shows a schematic diagram of the winch 104 including supply with a load cable 103 arranged thereon. The winch 104 has a drive 105. At this drive 105, the compensation device 1 is arranged. The drive 105 is controlled via the main control valve 14 of the crane for lifting and lowering the load cable 103 of the cable winch 104. The liquid container 13 provides the necessary liquid - preferably oil - for the hydraulic drive 105 available.

Mittels einem 2/2-Wegeventil 2 der Kompensationsvorrichtung 1 sowie eines Druckbegrenzungsventils 3 der Kompensationsvorrichtung 1 wird eine Verbindung über die beiden Verbindungsleitungen 4 und 5 zu den Versorgungsanschlüssen des Seilwindenmotors 12 hergestellt.By means of a 2/2-way valve 2 of the compensation device 1 and a pressure relief valve 3 of the compensation device 1, a connection via the two connecting lines 4 and 5 to the supply terminals of the winch motor 12 is produced.

Zum Aktivieren der Funktion wird das 2/2-Wegeventil 2 - das 2/2-Wegeventil 2 ist dabei elektrisch schaltbar 6 ausgebildet - geöffnet und am Hauptsteuerventil 14 wird die Funktion "Seilwinde heben" aktiviert. Der dadurch entstehende Druck öffnet die Bremse 11 und der Ölstrom lässt die Seilwinde 104 das Seil 103 einziehen und spannen. Ist das Seil 103 gespannt, so bleibt die Winde 104 stehen und der Ölstrom fließt über das Druckbegrenzungsventil 3 zurück. Der an dem Druckbegrenzungsventil 3 eingestellte Druck ergibt die Höhe der Seilzugkraft.To activate the function, the 2/2-way valve 2 - the 2/2-way valve 2 is electrically switchable 6 is formed - opened and the main control valve 14, the function "winch winch" is activated. The resulting pressure opens the brake 11 and the oil flow allows the winch 104, the rope 103 retract and tension. If the cable 103 is tensioned, the winch 104 stops and the oil flow returns via the pressure limiting valve 3. The pressure set at the pressure limiting valve 3 results in the height of the cable pulling force.

Stellt sich nun während der Kranbewegung eine Reduktion der notwendigen freien Seillänge ein, so wird das Seil 103 wie vorher beschrieben weiter aufgewickelt. Dabei ergibt sich die maximale Seilgeschwindigkeit aus dem am Hauptsteuerventil 14 eingestellten Ölstrom.If, during the crane movement, a reduction of the necessary free cable length occurs, then the cable 103 is wound further as described above. In this case, the maximum cable speed results from the set on the main control valve 14 oil flow.

Ist eine Verlängerung des freien Seilendes notwendig, so wird durch die Seilzugkraft die Winde 104 in umgekehrter Richtung gedreht und es wird das Seil 103 abgewickelt. Der durch den in Senkrichtung drehenden Antrieb 105 entstehende Volumenstrom fließt ebenfalls über das 2/2-Wegeventil 2 und das Druckbegrenzungsventil 3. Aufgrund des ständig anliegenden Druckes durch die am Hauptsteuerventil 14 aktivierte Funktion "Seilwinde heben" bleibt die Bremse 11 immer geöffnet und ermöglicht die Regelung der Seilzugkraft. Das Lasthalteventil 10 wird dabei von der Kompensationsvorrichtung 1 umgangen.If an extension of the free end of the rope is necessary, the winch 104 is rotated in the opposite direction by the cable pulling force and the cable 103 is unwound. Due to the constantly applied pressure by the function activated on the main control valve 14 "lift winch" function, the brake 11 always remains open and allows the. By the rotating in the lowering direction drive 105 resulting flow also flows through the 2/2-way valve 2 and the pressure relief valve Control of cable traction. The load-holding valve 10 is bypassed by the compensation device 1.

Somit wird die Spannung des Lastseiles 103 eines nicht dargestellten Fahrzeugkrans 100 (siehe Figur 1) konstant gehalten, wobei das Lastseil 103 an dem Hubarm 106 und den Knickarmen 101 und 102 (siehe Figur 1) geführt wird, wobei in einem Schritt das Lastseil 103 durch die Kompensationsvorrichtung 100 mittels der Seilwinde 104 gespannt wird, in weiterem Schritt - bei einer Änderung der Geometrie der Kranarme 106, 101 und 102 zueinander - welche eine Verkürzung der Führungslast seines Lastseils 103 an den Kranarmen 106, 101 und 102 verursacht - das Lastseil 103 durch die Kompensationsvorrichtung 1 auf die Seilwinde 104 aufgewickelt wird, hingegen in einem weiteren Schritt - bei einer weiteren Änderung der Geometrie der Kranarme 106, 101, 102 zueinander - welche eine Verlängerung der Führung des Lastseiles 103 an den Kranarmen 106, 101, 102 verursacht - das Lastseil 103 durch die Kompensationsvorrichtung 1 von der Seilwinde 104 abgewickelt wird. Dadurch wird für alle Betriebszustände der Kranarme 106, 101, 102 des Fahrzeugkranes 100 eine konstante Spannung des Lastseiles 103 durch die Kompensationsvorrichtung 1 bewirkt.Thus, the voltage of the load cable 103 of a vehicle crane 100, not shown, (see FIG. 1 ), wherein the load cable 103 on the lift arm 106 and the articulated arms 101 and 102 (see FIG. 1 ), wherein in one step the load cable 103 is tensioned by the compensation device 100 by means of the cable winch 104, in a further step - in a change in the geometry of the crane arms 106, 101 and 102 to each other - which a shortening of the guide load of his load cable 103 to the Crane arms 106, 101 and 102 caused - the load cable 103 is wound by the compensation device 1 on the winch 104, however, in a further step - in a further change in the geometry of the crane arms 106, 101, 102 to each other - which an extension of the guide of the load rope 103 causes the crane arms 106, 101, 102 - the load cable 103 is unwound by the compensating device 1 of the winch 104. As a result, a constant tension of the load cable 103 is caused by the compensation device 1 for all operating states of the crane arms 106, 101, 102 of the vehicle crane 100.

Figur 3 zeigt eine Variante einer Kompensationsvorrichtung 1 an einem Teil des Kranarmsystems 110 in Seitenansicht. Das Kranarmsystem 110 weist dabei die beiden Kranarme 101 und 102 auf, ein weiterer Kranarm 106 ist dabei hier nicht dargestellt. FIG. 3 shows a variant of a compensation device 1 on a part of the crane arm system 110 in side view. The crane arm system 110 in this case has the two crane arms 101 and 102, a further crane arm 106 is not shown here.

In diesem Ausführungsbeispiel wirkt die Kompensationsvorrichtung 1 über den Seilfixpunkt 107 des Seils 103. Über den Wegaufnehmer 30 am Seilfixpunkt 107 wird die Winde 104 (nicht dargestellt) gesteuert. Dieser Wegaufnehmer 30 besteht aus einem Federelement 32 - vorzugsweise einer Gasfeder - das in unbetätigtem Zustand eingefahren ist. Diese Einstellung wird über einen Schalter (nicht dargestellt) überwacht. Die Aktivierung der Kompensationsvorrichtung 1 ist in dieser Position nicht möglich, da es sich um den normalen Seilwindenbetrieb handelt.In this embodiment, the compensation device 1 acts on the cable fix point 107 of the cable 103. The winch 104 (not shown) is controlled via the position sensor 30 at the cable fix point 107. This displacement sensor 30 consists of a spring element 32 - preferably a gas spring - which is retracted in the unactuated state. This setting is via a switch (not shown) supervised. The activation of the compensation device 1 is not possible in this position, since it is the normal winch operation.

Vor Aktivierung der Kompensationsvorrichtung 1 wird das Seilende 31 am Wegaufnehmer 30 befestigt und durch Aufwickeln des Seils 103 mit der Winde 104 das Federelement 32 etwa auf die Hälfte seines Hubes vorgespannt.Before activation of the compensation device 1, the cable end 31 is attached to the transducer 30 and biased by winding the cable 103 with the winch 104, the spring element 32 about half its stroke.

Die Aktivierung der Kompensationsvorrichtung 1 ist nun möglich, deren Freigabe erfolgt durch den nicht dargestellten Überwachungsschalter. Die Position des Federelementes 32, genau genommen dessen Hubes, wird mit einem analogen Sensor (nicht dargestellt) gemessen und als elektrisches Signal an die Steuerung (nicht dargestellt) der Winde 104 weitergeleitet. Über diese Steuerung wird die Winde 104 angesteuert und das Seil 103 entweder auf- oder abgewickelt, bis der Wegaufnehmer 30 die Mittelstellung erreicht.The activation of the compensation device 1 is now possible, their release is carried out by the monitoring switch, not shown. The position of the spring element 32, actually its stroke, is measured with an analog sensor (not shown) and forwarded as an electrical signal to the controller (not shown) of the winch 104. Via this control, the winch 104 is activated and the cable 103 is either wound up or unwound until the position sensor 30 reaches the middle position.

Bei einer Änderung der Geometrie der Kranarme 101, 102 und 106 zueinander wird die dabei erforderliche Anpassung der Seillänge von der Steuerung durchgeführt, indem das Seil 103 von der Winde 104 auf- oder abgewickelt wird, bis das Federelement 32 wieder die Mittelstellung erreicht.In a change in the geometry of the crane arms 101, 102 and 106 to each other the required adjustment of the cable length is carried out by the controller by the cable 103 is wound up or unwound by the winch 104 until the spring element 32 reaches the center position again.

Dadurch wird eine Überlastung des Seiles 103 bzw. Schlaffseilbildung verhindert.As a result, overloading of the cable 103 or slack rope formation is prevented.

Figur 4 zeigt eine Seitenansicht eines Fahrzeuges 50, auf dem ein Fahrzeugkran 100 angeordnet ist. Das Kranarmsystem 110 des Fahrzeugkranes 100 weist dabei den Hubarm 106 und einen Knickarm 101 auf. Am Hubarm 106 ist in diesem bevorzugten Ausführungsbeispiel die Seilwinde 104 angeordnet, welche die Kompensationsvorrichtung 1 aufweist. FIG. 4 shows a side view of a vehicle 50, on which a vehicle crane 100 is arranged. The crane arm system 110 of the vehicle crane 100 in this case has the lifting arm 106 and an articulated arm 101. On the lifting arm 106, the winch 104 is arranged in this preferred embodiment, which has the compensation device 1.

Wenn auch die Erfindung anhand des gezeigten Ausführungsbeispiels konkret beschrieben wurde, versteht es sich von selbst, dass der Anmeldungsgegenstand nicht auf dieses Ausführungsbeispiel beschränkt ist.Although the invention has been described concretely with reference to the illustrated embodiment, it goes without saying that the subject of the application is not limited to this embodiment.

Claims (12)

  1. Vehicle crane (100) - in particular articulated arm crane - with a lifting arm (106) and one (101) or more articulate arms (101, 102), which (106, 101, 102) can be varied with respect to one another in relation to their geometry, and a load cable (103), which can be guided or is guided on the crane arms (106, 101, 102), characterised in that a compensation device (1) is provided, by means of which the tension in the load cable (103) can be controlled or regulated upon a change in the geometry of the crane arms (106, 101, 102) with respect to one another.
  2. Vehicle crane according to claim 1, characterised in that the compensation device (1) regulates the tension of the load cable (103) to a substantially lasting and constant value upon a change in the geometry of the crane arms (106, 101, 102).
  3. Vehicle crane according to claim 1 or 2, characterised in that the compensation device (1) is hydraulic.
  4. Vehicle crane according to any one of claims 1 to 3, characterised in that the compensation device (1) has at least one pressure limitation valve (3).
  5. Vehicle crane according to any one of claims 1 to 4, characterised in that the compensation device (1) has at least one directional valve (2) - preferably a 2/2-way valve.
  6. Vehicle crane according to claim 5, characterised in that the at least one directional valve (2) is electrically switchable (6).
  7. Vehicle crane according to any one of claims 1 to 6, characterised in that the vehicle crane (100) has a cable winch (104), the compensation device (1) being formed at least partly on the cable winch (104).
  8. Vehicle crane according to claim 7, characterised in that the compensation device (1) cooperates with the cable winch (104).
  9. Vehicle crane according to claim 7 or 8, characterised in that the cable winch (104) has a drive (105), the compensation device (1) cooperating with the drive (105) of the cable winch (104).
  10. Vehicle crane according to any one of claims 1 to 9, characterised in that the compensation device (1) has a distance sensor (30), the distance sensor (30) being detachably fastenable on the cable end (31) of the load cable (103).
  11. Vehicle crane according to claim 10, characterised in that the distance sensor (30) has at least one spring element (32) - preferably a gas spring.
  12. Method for keeping a tension of a load cable (103) of a vehicle crane (100) constant, in particular an articulated arm crane, the load cable (103) being guided on a lifting arm (106) and on one (101) or more articulated arms (101, 102), which (106, 101, 102) can be varied with respect to one another in relation to their geometry, characterised in that
    - in one step, the load cable (103) is tensioned by means of a cable winch (104) by a compensation device (1),
    - in a further step- upon a change in the geometry of the crane arms (106, 101, 102) with respect to one another, which causes a shortening of the guidance of the load cable (103) on the crane arms (106, 101, 102) - the load cable (103) is wound onto the cable winch (104) by the compensation device (1),
    - in a further step - upon a further change in the geometry of the crane arms (106, 101, 102) with respect to one another, which causes a lengthening of the guidance of the load cable (103) on the crane arms (106, 101, 102) - the load cable (103) is unwound from the cable winch (104) by the compensation device (1).
EP20110738578 2010-06-17 2011-06-16 Vehicle crane Active EP2582608B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11738578T PL2582608T3 (en) 2010-06-17 2011-06-16 Vehicle crane

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0037910U AT12086U1 (en) 2010-06-17 2010-06-17 VEHICLE CRANE
PCT/AT2011/000266 WO2011156829A1 (en) 2010-06-17 2011-06-16 Vehicle crane

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EP2582608A1 EP2582608A1 (en) 2013-04-24
EP2582608B1 true EP2582608B1 (en) 2013-10-09

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US (1) US8875912B2 (en)
EP (1) EP2582608B1 (en)
AT (1) AT12086U1 (en)
BR (1) BR112012031830B1 (en)
CA (1) CA2805055C (en)
DK (1) DK2582608T3 (en)
ES (1) ES2441606T3 (en)
PL (1) PL2582608T3 (en)
RU (1) RU2564059C2 (en)
WO (1) WO2011156829A1 (en)

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DE102014012493A1 (en) * 2014-08-27 2016-03-03 Schwing Gmbh articulated mast
EP3067309B1 (en) 2015-03-10 2019-08-07 HAWE Hydraulik SE Control valve for a hydraulic unit and hydraulic system with a corresponding control valve
EP3549899A1 (en) * 2016-04-25 2019-10-09 Cargotec Patenter AB Hydraulic crane
CN106395697B (en) * 2016-08-24 2019-10-01 浙江鼎力机械股份有限公司 Expansion joint assembly and aerial work platform
FI128555B (en) 2016-12-30 2020-08-14 Ponsse Oyj Crane and working machine
EP3441625B1 (en) * 2017-08-08 2020-06-17 B&R Industrial Automation GmbH Mounting element with pressure limitation
FR3105200B1 (en) * 2019-12-24 2021-12-03 Reel Knuckle boom crane, for offshore application

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EP1528263A1 (en) * 2003-10-29 2005-05-04 Hiab Ab A crane
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GB0819400D0 (en) * 2008-10-22 2008-11-26 Subsea 7 Offshore lifting operations

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Publication number Publication date
PL2582608T3 (en) 2014-04-30
BR112012031830A2 (en) 2016-11-08
RU2564059C2 (en) 2015-09-27
WO2011156829A1 (en) 2011-12-22
DK2582608T3 (en) 2014-01-13
BR112012031830B1 (en) 2021-03-09
CA2805055C (en) 2017-03-21
US8875912B2 (en) 2014-11-04
AT12086U1 (en) 2011-10-15
US20130092648A1 (en) 2013-04-18
RU2013102071A (en) 2014-07-27
EP2582608A1 (en) 2013-04-24
CA2805055A1 (en) 2011-12-22
ES2441606T3 (en) 2014-02-05

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