EP2297020B1 - Vehicle crane having hose guide - Google Patents

Vehicle crane having hose guide Download PDF

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Publication number
EP2297020B1
EP2297020B1 EP09775558A EP09775558A EP2297020B1 EP 2297020 B1 EP2297020 B1 EP 2297020B1 EP 09775558 A EP09775558 A EP 09775558A EP 09775558 A EP09775558 A EP 09775558A EP 2297020 B1 EP2297020 B1 EP 2297020B1
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EP
European Patent Office
Prior art keywords
crane
flexurally elastic
hose
arm
elastic sheet
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EP09775558A
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German (de)
French (fr)
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EP2297020A1 (en
Inventor
Eckhard Wimmer
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Palfinger AG
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Palfinger AG
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Priority to PL09775558T priority Critical patent/PL2297020T3/en
Publication of EP2297020A1 publication Critical patent/EP2297020A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • 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
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6918—With hose storage or retrieval means
    • Y10T137/6921—With means for plural hoses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/7043—Guards and shields
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/8807—Articulated or swinging flow conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/219—Guards
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/219—Guards
    • Y10T74/2191—Guards for rotary member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2193—Guard mechanisms

Definitions

  • the present invention relates to a vehicle crane with at least two crane arms, which are connected to each other via an angle adjustable angle and with at least one extending between the crane arms hose, which is exposed in at least one angular position of the crane arms in the region of the joint.
  • Such a vehicle crane goes from the EP 1 580 159 B1 out.
  • vehicle cranes have at least a first crane arm in the form of a crane column and a second crane arm in the form of a lifting arm.
  • the crane column is normally mounted on a support frame which is attached to the vehicle chassis. Relative to the support frame, the crane column is rotatably mounted about a vertical axis.
  • the lift arm is mounted on the joint connecting the two crane arms angularly adjustable about a horizontal axis.
  • the vast majority of cranes however, also have a further crane arm, which is angularly mounted via a joint on the lift arm (and about a horizontal axis) and is usually referred to as articulated.
  • a boom may be mounted, which may have a variety of boom extensions.
  • the angular adjustment of the at least two crane arms is usually via hydraulically operated piston-cylinder mechanisms, the hydraulic system has a plurality of hoses, which must be performed by the vehicle crane.
  • the possible different types of guidance of the hoses is described in paragraph 2 of the EP 1 580 159 B1 exactly described and therefore need not be repeated at this point.
  • US Pat EP 1 580 159 B1 an approximately U-shaped tube guide, which is arranged in the region of the joint and can be adapted via its own hydraulic adjusting mechanism to a changed angular position of the arms connected via the joint.
  • a hose guide assembly which consists of a flexible material which is clamped between two pins, wherein each one of the pins is arranged on one of the two crane arms. If the angular position of the two crane arms changes with respect to one another, then the flexible hose guide arrangement is stretched or compressed in order to take account of the changed distance between the two pins relative to each other.
  • US3885816A describes an arrangement of an articulated arm and a hose which extends in an angular position exposed in the region of the articulated joint, wherein a flexurally elastic plate is provided which is connected to a hose or covering it in the exposed area and which is bendable by changing the angular position of the articulated arm ,
  • the object of the invention is to provide a generic vehicle crane, in which pinching of the at least one tube is avoided by an angular adjustment of the two crane arms to each other, with the institution causing this should be characterized by a particularly simple design and a small footprint.
  • At least one flexurally elastic plate has the advantage that it does not require any separate clamping devices due to its inherent rigidity causing the bending elasticity. There is also no separate adjustment mechanism for compensating for a change in the angular position of the two crane arms to one another necessary, since the at least one plate bends due to its bending elasticity in a change in the angular position of the two crane arms and thus adapts itself.
  • the invention is usable for a wide range of movement of the crane arms.
  • the at least two crane arms which are connected via an articulated angle adjustable with each other, on the one hand, the crane column and the lifting arm and on the other hand, the lifting arm and the articulated arm.
  • the invention is used to secure the transition of the hoses from the lifting arm to the articulated arm.
  • the connecting fork on the lift arm is outside and the sleeve is located in the articulated arm.
  • the bushings are articulated in the lift arm and the fork is located on the articulated arm outside.
  • exactly one flexurally elastic plate can be provided which, for example, in the form of a spring steel sheet (preferably an approximately 0.4 mm thick coated stainless steel spring steel sheet ) is executed.
  • the plate can be fastened under the hose clamps of the lifting arm and over the hose clamps of the articulated arm.
  • a clamp for the at least one hose can be arranged, through which the at least one hose can slide.
  • the clamp may for example be formed of plastic and attached to the plate.
  • two flexurally elastic plates can be provided, wherein the at least one tube extends between the plates.
  • the two plates can for example consist of approximately 2mm thick polyethylene plates.
  • the two plates can be attached above and below the hose clamps on the articulated arm.
  • One of the two plates (preferably closer to the fulcrum) has holes in the middle and rear areas.
  • the other (fulcrum removed) plate is made slightly longer and has in this area slots, whereby the different bending radii can be compensated.
  • the two plates can be clamped together by means of fastening means (for example bolts) and spacers (preferably in the form of strips), for example plastic strips made of PA6Mu, via these bores.
  • fastening means for example bolts
  • spacers preferably in the form of strips
  • plastic strips made of PA6Mu
  • the fastening means are made short in the middle, in order to stretch the at least one hose (in practice, the hose package) well.
  • the fastening means of the rear row can be made slightly longer in order to ensure the unthreading of the at least one hose in the replacement part case. If the at least one hose needs to be changed, the Seeger rings of the middle accessible spacers can be opened. This allows the pulling of the at least one hose and fitting through the rear spacer.
  • the two flexurally elastic plates can cling tightly in the transport position of the vehicle crane over the at least one hose.
  • the at least one hose (or the hose package) during crane operation (ie outside the transport position) in the lift arm pressed, thereby reliably pinching the at least one tube between the lift arm and articulated arm is avoided.
  • the at least one tube is additionally protected against external influences, such as UV irradiation, road salt during transport and the like.
  • the flexurally elastic plate (s) can (at) bend over the at least one tube, which thereby does not between the lifting arm and the articulated arm can be trapped.
  • the use of the invention is not limited to hydraulic hoses.
  • the invention also for the protection of hoses in which electrical lines run.
  • the contour of the plate and the contour of the at least one tube in all angular positions of the crane arms match.
  • the Fig. 1 a shows a perspective view of various parts of a vehicle crane 1 with only partially drawn crane column 2, a lifting arm 3 and an articulated arm 4.
  • the crane column 2 is fixed to a (not shown) plate, which arranged on a (not shown on a vehicle ) Support frame can be stored so that the crane column 2 is rotatably mounted about a vertical axis.
  • a vertical axis With regard to the terms “horizontal” and “horizontal” it is assumed that the vehicle chassis runs horizontally.
  • the crane column 2 can be rotated about a vertical axis.
  • the lifting arm 3 is rotatable relative to the crane column 2 about a horizontal axis.
  • the articulated arm 4 is rotatably mounted on the lifting arm 3 about a horizontal axis.
  • a possibly arranged in articulated arm 4 boom possibly with boom extensions.
  • the hydraulic hoses are exposed in the region of the arranged between the lifting arm 3 and articulated arm 4 joint. According to the embodiment of the invention shown, it is therefore provided that a hose package 5 is formed using a flexurally elastic plate 6.
  • Fig. 2a to 2c show different views Fig. 1a , with particular attention was paid to the representation of the hose package 5.
  • the flexurally elastic plate 6 is fixed with its one end on the lifting arm 3 and with its other end on the articulated arm 4. Approximately in the middle of the flexurally elastic plate 6 (at the highest point of the maximum bending radius with overstretched articulated arm 4), a clamp 7 is attached to the flexurally elastic plate 6 via fastening means 8. The hydraulic hoses can slide through this clamp 7, whereby the compensation of the different bending radii between the hydraulic hoses and the flexurally elastic plate 6 is ensured depending on the angular position of the crane arms 3, 4.
  • the Fig. 3 shows a sectional view in the region of the joint, wherein the crane arms 3, 4 are arranged in the transport position of the vehicle crane 1.
  • the Fig. 4a shows a perspective view according to the Fig. 1a for the second system of attachment of the articulated arm 4 on the lifting arm 3.
  • the vehicle crane 1 is thus shown again in a working position.
  • the Fig. 4b and 4c show the corresponding position of the crane arms 3, 4 in the transport position of the vehicle crane 1.
  • the Fig. 4d shows again a closer view Fig. 4a , wherein it can be seen that the entire hose assembly 5 is pressed at least partially into the lifting arm 3 in the working position.
  • the hose package 5 is more accurate in the Fig. 5a and 5b shown.
  • Fig. 5a shows that in the present case, two flexurally elastic plates 6 were used, which are connected to each other via fastening means 8.
  • the illustrated slots 9 are used to compensate for the different bending radii. This function of the slots 9 comes particularly well in a comparison of Fig. 5a and 5b to the fore.
  • Fig. 6a to 6c show according to the Fig. 3 Sectional views in the region of the joint for different working positions of the crane arms 3, 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

Die vorliegende Erfindung betrifft einen Fahrzeugkran mit wenigstens zwei Kranarmen, die über ein Gelenk winkelverstellbar miteinander verbunden sind und mit wenigstens einem zwischen den Kranarmen verlaufenden Schlauch, der in wenigstens einer Winkelstellung der Kranarme exponiert im Bereich des Gelenks verläuft.The present invention relates to a vehicle crane with at least two crane arms, which are connected to each other via an angle adjustable angle and with at least one extending between the crane arms hose, which is exposed in at least one angular position of the crane arms in the region of the joint.

Ein derartiger Fahrzeugkran geht beispielsweise aus der EP 1 580 159 B1 hervor. Wie in dieser Druckschrift in Absatz 2 richtig ausgeführt wird, weisen derartige Fahrzeugkräne wenigstens einen ersten Kranarm in Form einer Kransäule und einen zweiten Kranarm in Form eines Hubarmes auf. Die Kransäule ist dabei normalerweise an einem Stützgestell gelagert, welches am Fahrzeugfahrgestell befestigt ist. Relativ zum Stützgestell ist die Kransäule um eine vertikale Achse drehbar gelagert. Der Hubarm ist über das die beiden Kranarme verbindende Gelenk um eine horizontale Achse winkelverstellbar gelagert. Die allermeisten Kräne weisen allerdings zusätzlich einen weiteren Kranarm auf, der über ein Gelenk am Hubarm winkelverstellbar gelagert ist (und zwar um eine horizontale Achse) und meist als Knickarm bezeichnet wird. Im Knickarm kann ein Ausleger gelagert sein, der eine Vielzahl von Auslegerverlängerungen aufweisen kann.Such a vehicle crane, for example, goes from the EP 1 580 159 B1 out. As stated correctly in this document in paragraph 2, such vehicle cranes have at least a first crane arm in the form of a crane column and a second crane arm in the form of a lifting arm. The crane column is normally mounted on a support frame which is attached to the vehicle chassis. Relative to the support frame, the crane column is rotatably mounted about a vertical axis. The lift arm is mounted on the joint connecting the two crane arms angularly adjustable about a horizontal axis. The vast majority of cranes, however, also have a further crane arm, which is angularly mounted via a joint on the lift arm (and about a horizontal axis) and is usually referred to as articulated. In the articulated arm, a boom may be mounted, which may have a variety of boom extensions.

Die Winkelverstellung der wenigstens zwei Kranarme erfolgt meist über hydraulisch betriebene Kolbenzylindermechanismen, deren Hydraulik eine Vielzahl von Schläuchen aufweist, die durch den Fahrzeugkran geführt werden müssen. Die möglichen unterschiedlichen Arten der Führung der Schläuche wird in Absatz 2 der EP 1 580 159 B1 genau beschrieben und muss daher an dieser Stelle nicht wiederholt werden.The angular adjustment of the at least two crane arms is usually via hydraulically operated piston-cylinder mechanisms, the hydraulic system has a plurality of hoses, which must be performed by the vehicle crane. The possible different types of guidance of the hoses is described in paragraph 2 of the EP 1 580 159 B1 exactly described and therefore need not be repeated at this point.

Um unkontrolliert im Bereich des Gelenks abstehende Ausbauchungen oder Schleifenbildungen der Schläuche zu verhindern, die im Extremfall zu einer Beschädigung der Schläuche führen können, offenbart die EP 1 580 159 B1 eine in etwa U-förmige Schlauchführung, die im Bereich des Gelenks angeordnet ist und über einen eigenen hydraulischen Verstellmechanismus an eine veränderte Winkelstellung der über das Gelenk verbundenen Kranarme angepasst werden kann.To prevent protruding bulges or looping of the hoses in an uncontrolled manner in the area of the joint, which in extreme cases may damage the hoses, US Pat EP 1 580 159 B1 an approximately U-shaped tube guide, which is arranged in the region of the joint and can be adapted via its own hydraulic adjusting mechanism to a changed angular position of the arms connected via the joint.

Problematisch an dieser Vorrichtung ist die relativ begrenzte Einsetzbarkeit hinsichtlich des Bewegungsbereichs der Kranarme. Außerdem muss die U-förmige Schlauchführung zur Anpassung an eine veränderte Winkelstellung der Kranarme gesondert mitgeführt werden.The problem with this device is the relatively limited applicability with regard to the range of movement of the crane arms. In addition, the U-shaped hose guide must be carried separately to adapt to a changed angular position of the crane arms.

Aus der US 5,806,313 ist eine Schlauchführungsanordnung bekannt, die aus einem flexiblen Material besteht, das zwischen zwei Stiften aufgespannt ist, wobei je einer der Stifte an einem der beiden Kranarme angeordnet ist. Ändert sich die Winkelstellung der beiden Kranarme zueinander, so wird die flexible Schlauchführungsanordnung gedehnt bzw. komprimiert, um dem sich veränderten Abstand der beiden Stifte zueinander Rechnung zu tragen.From the US 5,806,313 a hose guide assembly is known, which consists of a flexible material which is clamped between two pins, wherein each one of the pins is arranged on one of the two crane arms. If the angular position of the two crane arms changes with respect to one another, then the flexible hose guide arrangement is stretched or compressed in order to take account of the changed distance between the two pins relative to each other.

Problematisch an dieser Konstruktion ist die relativ große Bauweise, da relativ lange und daher weit vom Kranarm abstehende Stifte benötigt werden, um die flexibel ausgebildete Schlauchführungsan,ordnung aufzuspannen.The problem with this construction is the relatively large size, since relatively long and therefore far from the crane arm protruding pins are needed to aufzuspannen the flexible Schlauchführungsan order.

Aus dem FR 2499051 A ist ein Fahrzungkran gemäß dem Oberbegriff des Anspruchs 1 bekannt.From the FR 2499051 A a Fahrzungkran according to the preamble of claim 1 is known.

US3885816A beschreibt eine Anordnung eines Knickarms und eines Schlauches, der in einer Winkelstellung exponiert im Bereich des Knickarmgelenks verläuft, wobei eine biegeelastische Platte vorgesehen ist, die mit einem Schlauch verbunden ist oder ihn im exponierten Bereich abdeckt und die durch eine Änderung der Winkelstellung des Knickarms biegbar ist. US3885816A describes an arrangement of an articulated arm and a hose which extends in an angular position exposed in the region of the articulated joint, wherein a flexurally elastic plate is provided which is connected to a hose or covering it in the exposed area and which is bendable by changing the angular position of the articulated arm ,

Aufgabe der Erfindung ist es, einen gattungsgemäßen Fahrzeugkran bereitzustellen, bei dem ein Einklemmen des wenigstens einen Schlauches durch eine Winkelverstellung der beiden Kranarme zueinander vermieden wird, wobei sich die dies bewirkende Einrichtung durch eine besonders einfache Bauweise und einen geringen Platzbedarf auszeichnen soll.The object of the invention is to provide a generic vehicle crane, in which pinching of the at least one tube is avoided by an angular adjustment of the two crane arms to each other, with the institution causing this should be characterized by a particularly simple design and a small footprint.

Diese Aufgabe wird durch einen Fahrzeugkran mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a vehicle crane having the features of claim 1.

Der Einsatz zumindest einer biegeelastischen Platte hat den Vorteil, dass sie aufgrund ihrer die Biegeelastizität bewirkenden Eigensteifigkeit keine gesonderten Aufspannvorrichtungen benötigt. Es ist auch kein gesonderter Verstellmechanismus zur Kompensation einer Änderung der Winkelstellung der beiden Kranarme zueinander notwendig, da sich die zumindest eine Platte aufgrund ihrer Biegeelastizität bei einer Änderung der Winkelstellung der beiden Kranarme biegt und sich so von selbst anpasst. Die Erfindung ist für einen großen Bewegungsbereich der Kranarme verwendbar.The use of at least one flexurally elastic plate has the advantage that it does not require any separate clamping devices due to its inherent rigidity causing the bending elasticity. There is also no separate adjustment mechanism for compensating for a change in the angular position of the two crane arms to one another necessary, since the at least one plate bends due to its bending elasticity in a change in the angular position of the two crane arms and thus adapts itself. The invention is usable for a wide range of movement of the crane arms.

Im Sinne der vorliegenden Erfindung kann unter den wenigstens zwei Kranarmen, die über eine Gelenk winkelverstellbar miteinander verbunden sind, einerseits die Kransäule und der Hubarm und andererseits auch der Hubarm und der Knickarm verstanden werden.For the purposes of the present invention may be understood among the at least two crane arms, which are connected via an articulated angle adjustable with each other, on the one hand, the crane column and the lifting arm and on the other hand, the lifting arm and the articulated arm.

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

Ganz allgemein muss gesagt werden, dass man in der Praxis kaum mit einem einzigen Schlauch auskommen wird und es sich daher meistens um eine Vielzahl von Schläuchen handeln wird, die mit der zumindest einen biegeelastischen Platte verbunden sind (sodass sich ein Schlauchpaket ergibt) oder von ihr zumindest im exponierten Bereich abgedeckt werden.In general, it must be said that in practice it will be difficult to get by with a single hose, and therefore it will most often be a multitude of hoses connected to the at least one flexurally elastic plate (resulting in a hose package) or from it be covered at least in the exposed area.

Besonders bevorzugt wird die Erfindung eingesetzt, um den Übergang der Schläuche vom Hubarm zum Knickarm zu sichern. Hinsichtlich der Befestigung des Knickarms am Hubarm sind im Stand der Technik zwei unterschiedliche Systeme bekannt geworden. Bei dem einen System befindet sich die Verbindungsgabel am Hubarm außen und die Büchse ist im Knickarm angeordnet. Beim anderen System sind die Büchsen im Hubarm angelenkt und die Gabel befindet sich am Knickarm außen.Particularly preferably, the invention is used to secure the transition of the hoses from the lifting arm to the articulated arm. With regard to the attachment of the articulated arm on the lift arm, two different systems have become known in the prior art. In one system, the connecting fork on the lift arm is outside and the sleeve is located in the articulated arm. In the other system, the bushings are articulated in the lift arm and the fork is located on the articulated arm outside.

Nachfolgend werden für jedes der beiden Systeme besonders bevorzugte Ausführungen der Erfindung beschrieben, welche allerdings nicht auf die Anwendung im jeweils beschriebenen System beschränkt sind, sondern durchaus auch (gegebenenfalls mit dem Fachmann geläufigen Modifikationen) beim anderen System eingesetzt werden können. Auch ist die Erfindung generell nicht auf den Einsatz bei den beiden diskutierten Systemen beschränkt.Hereinafter, particularly preferred embodiments of the invention are described for each of the two systems, which, however, are not limited to the application in the respective described system, but quite well (if appropriate, with the skilled artisan modifications) can be used in the other system. Also, the invention is generally not limited to use in the two systems discussed.

Ist die Büchse im Knickarm angelenkt und befindet sich die Gabel am Hubarm außen (erstes System), so kann beispielsweise genau eine biegeelastische Platte vorgesehen sein, welche zum Beispiel in Form eines Federstahlblechs (vorzugsweise ein ca. 0,4 mm starkes beschichtetes Niro-Federstahlblech) ausgeführt ist. Die Platte kann unter den Schlauchschellen des Hubarmes und über den Schlauchschellen des Knickarmes befestigt werden. Dort, wo bei überstrecktem Knickarm der höchste Punkt des maximalen Biegeradius liegt (ca. in der Mitte der Platte), kann eine Schelle für den wenigstens einen Schlauch angeordnet sein, durch welche der wenigstens eine Schlauch gleiten kann. Die Schelle kann beispielsweise aus Kunststoff ausgebildet und an der Platte befestigt sein. Dadurch kann der Ausgleich der unterschiedlichen Biegeradien zwischen dem wenigstens einen Schlauch und der biegeelastischen Platte gewährleistet werden.If the sleeve is articulated in the articulated arm and the fork is located on the outside of the lifting arm (first system), for example, exactly one flexurally elastic plate can be provided which, for example, in the form of a spring steel sheet (preferably an approximately 0.4 mm thick coated stainless steel spring steel sheet ) is executed. The plate can be fastened under the hose clamps of the lifting arm and over the hose clamps of the articulated arm. Where the highest point of the maximum bending radius lies at overstretched articulated arm (approximately in the middle of the plate), a clamp for the at least one hose can be arranged, through which the at least one hose can slide. The clamp may for example be formed of plastic and attached to the plate. Thereby, the compensation of the different bending radii between the at least one tube and the flexurally elastic plate can be ensured.

Erfolgt die Anlenkung der Büchsen im Hubarm und befindet sich die Gabel am Knickarm außen (zweites System), können beispielsweise zwei biegeelastische Platten vorgesehen sein, wobei der wenigstens eine Schlauch zwischen den Platten verläuft.If the articulation of the bushes in the lift arm and the fork is on the articulated arm outside (second system), for example, two flexurally elastic plates can be provided, wherein the at least one tube extends between the plates.

Die beiden Platten können beispielsweise aus ca. 2mm starken Polyethylen-Platten bestehen. Die beiden Platten können ober- und unterhalb der Schlauchschellen am Knickarm befestigt werden. Eine der beiden Platten (vorzugsweise die dem Drehpunkt nähere) weist im mittleren und hinteren Bereich Bohrungen auf. Die andere (drehpunktferne) Platte ist etwas länger ausgeführt und weist in diesem Bereich Langlöcher auf, wodurch die unterschiedlichen Biegeradien ausgeglichen werden können. Die beiden Platten können mittels Befestigungsmittel (zum Beispiel Bolzen) und Abstandhalter (vorzugsweise in Form von Leisten), zum Beispiel Kunststoffleisten aus PA6Mu über diese Bohrungen zusammengespannt werden. In den Leisten kann der Bolzenkopf auf der Außenseite versenkt sein, um ein Scheuem an der Hubarmbüchse zu vermeiden. Die Bolzen können an der Unterseite mittels Seeger-Ringe gesichert werden. Besonders bevorzugt sind die Befestigungsmittel in der Mitte kurz ausgeführt, um den wenigstens einen Schlauch (in der Praxis das Schlauchpaket) gut zu spannen. Die Befestigungsmittel der hinteren Reihe können etwas länger ausgeführt sein, um das Ausfädeln des wenigstens einen Schlauches im Ersatzteilfall gewährleisten zu können. Sollte der wenigstens eine Schlauch gewechselt werden müssen, können die Seeger-Ringe der mittleren zugängigen Abstandhalter geöffnet werden. Dies ermöglicht das Durchziehen des wenigstens einen Schlauches samt Armatur durch den hinteren Abstandhalter.The two plates can for example consist of approximately 2mm thick polyethylene plates. The two plates can be attached above and below the hose clamps on the articulated arm. One of the two plates (preferably closer to the fulcrum) has holes in the middle and rear areas. The other (fulcrum removed) plate is made slightly longer and has in this area slots, whereby the different bending radii can be compensated. The two plates can be clamped together by means of fastening means (for example bolts) and spacers (preferably in the form of strips), for example plastic strips made of PA6Mu, via these bores. In the strips, the bolt head can be countersunk on the outside, to avoid a Scheuem at Hubarmbüchse. The bolts can be secured at the bottom by means of Seeger rings. Particularly preferably, the fastening means are made short in the middle, in order to stretch the at least one hose (in practice, the hose package) well. The fastening means of the rear row can be made slightly longer in order to ensure the unthreading of the at least one hose in the replacement part case. If the at least one hose needs to be changed, the Seeger rings of the middle accessible spacers can be opened. This allows the pulling of the at least one hose and fitting through the rear spacer.

Wie insbesondere aus den nachstehenden Figuren hervorgehen wird, können sich die beiden biegeelastischen Platten in der Transportstellung des Fahrzeugkrans eng anliegend über den wenigstens einen Schlauch anschmiegen. Bei der bevorzugten Ausführungsform wird der wenigstens eine Schlauch (bzw. das Schlauchpaket) während des Kranbetriebs (also außerhalb der Transportstellung) in den Hubarm gedrückt, wodurch zuverlässig ein Einklemmen des wenigstens einen Schlauches zwischen Hubarm und Knickarm vermieden wird.As will emerge in particular from the figures below, the two flexurally elastic plates can cling tightly in the transport position of the vehicle crane over the at least one hose. In the preferred embodiment, the at least one hose (or the hose package) during crane operation (ie outside the transport position) in the lift arm pressed, thereby reliably pinching the at least one tube between the lift arm and articulated arm is avoided.

Beide oben diskutierten Systeme beseitigen eine Einquetschgefahr des wenigstens einen Schlauches. Vor allem wenn die wenigstens eine biegeelastische Platte vollflächig ausgeführt ist, ist der wenigstens eine Schlauch zusätzlich vor äußeren Einflüssen, wie UV-Bestrahlung, Streusalz während des Transportes und dergleichen geschützt.Both systems discussed above eliminate a risk of crushing the at least one tube. Especially if the at least one flexurally elastic plate is designed to be full-surface, the at least one tube is additionally protected against external influences, such as UV irradiation, road salt during transport and the like.

Über den gesamten Bewegungsbereich des Knickarmes, zum Beispiel 180° (Transportstellung) bis -15° (überstreckte Arbeitsstellung), kann (können) sich die biegeelastische Platte(n) über den wenigstens einen Schlauch biegen, welcher dadurch nicht zwischen dem Hubarm und dem Knickarm eingeklemmt werden kann.Over the entire range of movement of the articulated arm, for example 180 ° (transport position) to -15 ° (overstretched working position), the flexurally elastic plate (s) can (at) bend over the at least one tube, which thereby does not between the lifting arm and the articulated arm can be trapped.

Der Einsatz der Erfindung ist nicht auf Hydraulikschläuche beschränkt. Zum Beispiel wäre es vorstellbar, die Erfindung auch zum Schutz von Schläuchen, in denen elektrische Leitungen verlaufen, einzusetzen.The use of the invention is not limited to hydraulic hoses. For example, it would be conceivable to use the invention also for the protection of hoses in which electrical lines run.

Durch die Biegeelastizität der zumindest einen Platte ist es bei allen Ausführungsformen der Erfindung möglich, dass die Kontur der Platte und die Kontur des wenigstens einen Schlauches in allen Winkelstellungen der Kranarme übereinstimmen.Due to the bending elasticity of the at least one plate, it is possible in all embodiments of the invention that the contour of the plate and the contour of the at least one tube in all angular positions of the crane arms match.

Weitere Vorteile und Einzelheiten der Erfindung ergeben sich anhand der Figuren sowie der dazugehörigen Figurenbeschreibung. Dabei beziehen sich die

Fig. 1 bis 3
auf den Einsatz der Erfindung beim ersten System der Befestigung des Knickarms am Hubarm und die
Fig. 4 bis 6
auf den Einsatz der Erfindung beim zweiten System.
Further advantages and details of the invention will become apparent from the figures and the associated description of the figures. Here are the refer
Fig. 1 to 3
on the use of the invention in the first system of attachment of the articulated arm on the lifting arm and the
4 to 6
on the use of the invention in the second system.

Da Fahrzeugkräne an sich zum Stand der Technik gehören (siehe zum Beispiel die eingangs diskutierte EP 1 580 159 B1 ), werden nur solche Details des Fahrzeugkrans dargestellt, die das Verständnis der Erfindung erleichtern.Since mobile cranes themselves belong to the prior art (see, for example, the initially discussed EP 1 580 159 B1 ), only such details of the vehicle crane are shown, which facilitate the understanding of the invention.

Die Fig. 1 a zeigt eine perspektivische Ansicht verschiedener Teile eines Fahrzeugkrans 1 mit einer nur abschnittsweise gezeichneten Kransäule 2, einem Hubarm 3 und einem Knickarm 4. Die Kransäule 2 ist an einer (nicht dargestellten) Platte befestigt, welche an einem (an einem ebenfalls nicht dargestellten Fahrzeug angeordneten) Stützgestell so gelagert werden kann, dass die Kransäule 2 um eine vertikale Achse drehbar gelagert ist. Hinsichtlich der Begriffe wertikal" und horizontal" wird davon ausgegangen, dass das Fahrzeugfahrgestell horizontal verläuft.The Fig. 1 a shows a perspective view of various parts of a vehicle crane 1 with only partially drawn crane column 2, a lifting arm 3 and an articulated arm 4. The crane column 2 is fixed to a (not shown) plate, which arranged on a (not shown on a vehicle ) Support frame can be stored so that the crane column 2 is rotatably mounted about a vertical axis. With regard to the terms "horizontal" and "horizontal" it is assumed that the vehicle chassis runs horizontally.

Über das nicht dargestellte Stützgestell kann die Kransäule 2 um eine vertikale Achse gedreht werden. Der Hubarm 3 ist bezüglich der Kransäule 2 um eine horizontale Achse drehbar. Ebenso ist der Knickarm 4 am Hubarm 3 um eine horizontale Achse drehbar gelagert. Nicht dargestellt ist ein möglicherweise im Knickarm 4 angeordneter Ausleger, gegebenenfalls samt Auslegerverlängerungen.About the support frame, not shown, the crane column 2 can be rotated about a vertical axis. The lifting arm 3 is rotatable relative to the crane column 2 about a horizontal axis. Similarly, the articulated arm 4 is rotatably mounted on the lifting arm 3 about a horizontal axis. Not shown is a possibly arranged in articulated arm 4 boom, possibly with boom extensions.

Die Winkelverstellung von Hubarm 3 und Knickarm 4 erfolgt über in Fig. 1 a nicht erkennbare Kolbenzylindereinheiten, sodass sich die Notwendigkeit ergibt, im vorliegenden Ausführungsbeispiel mehrere Hydraulikschläuche vom Hubarm 3 zum Knickarm 4 zu führen. Wie in Fig. 1a erkennbar ist, verlaufen die Hydraulikschläuche im Bereich des zwischen Hubarm 3 und Knickarm 4 angeordneten Gelenks exponiert. Gemäß der gezeigten Ausführungsform der Erfindung ist daher vorgesehen, dass unter Verwendung einer biegeelastischen Platte 6 ein Schlauchpaket 5 gebildet wird.The angular adjustment of the lifting arm 3 and articulated arm 4 via in Fig. 1 a unrecognizable piston-cylinder units, so that there is a need to lead in the present embodiment, a plurality of hydraulic hoses from the lifting arm 3 to the articulated arm 4. As in Fig. 1a can be seen, the hydraulic hoses are exposed in the region of the arranged between the lifting arm 3 and articulated arm 4 joint. According to the embodiment of the invention shown, it is therefore provided that a hose package 5 is formed using a flexurally elastic plate 6.

Da die Länge der Hydraulikschläuche auf die in Fig. 1b dargestellte Transportstellung des Fahrzeugkrans 1 abgestellt ist und in der in Fig. 1a dargestellten Arbeitsstellung an sich eine geringere Länge der Hydraulikschläuche benötigt wird, müssen sich die Hydraulikschläuche je nach Winkelstellung der Kranarme 3, 4 ausbeulen. Aufgrund der Verbindung der Hydraulikschläuche mit der biegeelastischen Platte 6, die ihrerseits durch eine Änderung der Winkelstellung der Kranarme 3, 4 gebogen wird, erfolgt die Ausbeulung der Hydraulikschläuche in kontrollierter Weise und es wird ein Einklemmen der Hydraulikschläuche im Bereich des Gelenks vermieden.Since the length of the hydraulic hoses on the in Fig. 1b shown transport position of the vehicle crane 1 is parked and in the in Fig. 1a shown working position in itself a smaller length of the hydraulic hoses is required, the hydraulic hoses depending on the angular position of the crane arms 3, 4 bulge. Due to the connection of the hydraulic hoses with the flexurally elastic plate 6, which in turn is bent by a change in the angular position of the crane arms 3, 4, the bulging of the hydraulic hoses in a controlled manner and it is a trapping of the hydraulic hoses in the region of the joint avoided.

Die Fig. 2a bis 2c zeigen unterschiedliche Ansichten zu Fig. 1a, wobei besonderes Augenmerk auf die Darstellung des Schlauchpakets 5 gerichtet wurde.The Fig. 2a to 2c show different views Fig. 1a , with particular attention was paid to the representation of the hose package 5.

Insbesondere aus Fig. 2c ist erkennbar, dass sich die Hydraulikschläuche in diesem Ausführungsbeispiel an die biegeelastische Platte 6 anschmiegen und nicht nur in einem gewissen Abstand zu dieser deren Kontur folgen.In particular from Fig. 2c It can be seen that the hydraulic hoses cling to the flexurally elastic plate 6 in this embodiment, and not just follow their contour at a certain distance from this.

Die biegeelastische Platte 6 ist mit ihrem einem Ende am Hubarm 3 und mit ihrem anderen Ende am Knickarm 4 befestigt. Ungefähr in der Mitte der biegeelastischen Platte 6 (am höchsten Punkt des maximalen Biegeradius bei überstrecktem Knickarm 4), ist über Befestigungsmittel 8 eine Schelle 7 an der biegeelastischen Platte 6 befestigt. Die Hydraulikschläuche können durch diese Schelle 7 gleiten, wodurch der Ausgleich der unterschiedlichen Biegeradien zwischen den Hydraulikschläuchen und der biegeelastischen Platte 6 je nach Winkelstellung der Kranarme 3, 4 gewährleistet ist.The flexurally elastic plate 6 is fixed with its one end on the lifting arm 3 and with its other end on the articulated arm 4. Approximately in the middle of the flexurally elastic plate 6 (at the highest point of the maximum bending radius with overstretched articulated arm 4), a clamp 7 is attached to the flexurally elastic plate 6 via fastening means 8. The hydraulic hoses can slide through this clamp 7, whereby the compensation of the different bending radii between the hydraulic hoses and the flexurally elastic plate 6 is ensured depending on the angular position of the crane arms 3, 4.

Anzumerken ist, dass in den Fig. 2a bis 2c unterschiedlich viele Hydraulikschläuche dargestellt sind. Hierdurch wird verdeutlicht, dass die Erfindung nicht auf eine bestimmte Anzahl von Hydraulikschläuchen beschränkt ist. Generell ist die Erfindung natürlich überhaupt nicht auf Hydraulikschläuche beschränkt, sondern auch bei anderen Arten von Schläuchen einsetzbar, welche exponiert zwischen Kranarmen verlaufen. Anders als dargestellt, könnte die biegeelastische Platte 6 auch unterhalb der Hydraulikschläuche angeordnet sein, das heißt die Hydraulikschläuche zu den Kranarmen 3, 4 hin abdecken.It should be noted that in the Fig. 2a to 2c different numbers of hydraulic hoses are shown. This makes it clear that the invention is not limited to a specific number of hydraulic hoses. Of course, the invention is of course not at all limited to hydraulic hoses, but can also be used with other types of hoses which are exposed between crane arms. Differently than illustrated, the flexible elastic plate 6 could also be arranged below the hydraulic hoses, that is to say cover the hydraulic hoses to the crane arms 3, 4.

Die Fig. 3 zeigt eine Schnittdarstellung im Bereich des Gelenks, wobei die Kranarme 3, 4 in der Transportstellung des Fahrzeugkrans 1 angeordnet sind.The Fig. 3 shows a sectional view in the region of the joint, wherein the crane arms 3, 4 are arranged in the transport position of the vehicle crane 1.

Die Fig. 4a zeigt eine perspektivische Ansicht entsprechend der Fig. 1a für das zweite System der Befestigung des Knickarms 4 am Hubarm 3. Der Fahrzeugkran 1 ist also wieder in einer Arbeitsstellung dargestellt. Die Fig. 4b und 4c zeigen die entsprechende Stellung der Kranarme 3, 4 in der Transportstellung des Fahrzeugkrans 1. Die Fig. 4d zeigt nochmals eine genauere Ansicht zu Fig. 4a, wobei erkennbar wird, dass das gesamte Schlauchpaket 5 in der Arbeitsstellung zumindest teilweise in den Hubarm 3 gedrückt wird. Das Schlauchpaket 5 ist genauer in den Fig. 5a und 5b dargestellt. Fig. 5a zeigt, dass im vorliegenden Fall zwei biegeelastische Platten 6 eingesetzt wurden, welche über Befestigungsmittel 8 miteinander verbunden sind. Zwischen den beiden biegeelastischen Platten 6 verlaufen die Hydraulikschläuche, die so sowohl an ihrer Ober- als auch an ihrer Unterseite geschützt im Bereich des Gelenks verlaufen können. Erkennbar ist in Fig. 5a, dass die Befestigungsmittel 8, welche ungefähr in der Mitte der biegeelastischen Platten 6 angeordnet sind, etwas kürzer ausgebildet sind, als die Befestigungsmittel 8, die in Fig. 5a am rechten Ende der biegeelastischen Platte 6 angeordnet sind. Hierdurch wird die Möglichkeit des Ausfädelns der Hydraulikschläuche im Ersatzteilfall gewährleistet.The Fig. 4a shows a perspective view according to the Fig. 1a for the second system of attachment of the articulated arm 4 on the lifting arm 3. The vehicle crane 1 is thus shown again in a working position. The Fig. 4b and 4c show the corresponding position of the crane arms 3, 4 in the transport position of the vehicle crane 1. The Fig. 4d shows again a closer view Fig. 4a , wherein it can be seen that the entire hose assembly 5 is pressed at least partially into the lifting arm 3 in the working position. The hose package 5 is more accurate in the Fig. 5a and 5b shown. Fig. 5a shows that in the present case, two flexurally elastic plates 6 were used, which are connected to each other via fastening means 8. Between the two flexurally elastic plates 6 extend the hydraulic hoses, so both on their Protected upper and at the bottom protected in the area of the joint can run. Is recognizable in Fig. 5a in that the fastening means 8, which are arranged approximately in the middle of the flexurally elastic plates 6, are made slightly shorter than the fastening means 8, which are in Fig. 5a are arranged at the right end of the flexurally elastic plate 6. As a result, the possibility of Ausädelns the hydraulic hoses is guaranteed in the spare part case.

Die dargestellten Langlöcher 9 dienen dem Ausgleich der unterschiedlichen Biegeradien. Diese Funktion der Langlöcher 9 kommt besonders gut bei einem Vergleich der Fig. 5a und 5b zum Vorschein.The illustrated slots 9 are used to compensate for the different bending radii. This function of the slots 9 comes particularly well in a comparison of Fig. 5a and 5b to the fore.

Die Fig. 6a bis 6c zeigen entsprechend der Fig. 3 Schnittdarstellungen im Bereich des Gelenks für verschiedene Arbeitsstellungen der Kranarme 3, 4.The Fig. 6a to 6c show according to the Fig. 3 Sectional views in the region of the joint for different working positions of the crane arms 3, 4.

In allen Figuren wurde auf die Darstellung von dem Fachmann geläufigen Details, wie beispielsweise Kolbenzylindereinheiten, verzichtet. Außerdem wurde der Verlauf der Hydraulikschläuche nur in dem relevanten Bereich des Gelenks dargestellt.In all figures, the presentation of familiar to those skilled in details, such as piston-cylinder units omitted. In addition, the course of the hydraulic hoses was shown only in the relevant area of the joint.

Claims (8)

  1. A mobile crane comprising:
    at least two crane booms which are connected together by means of a joint such that the angular position with respect to each other can be adjusted,
    and at least one hose passing between said crane booms, said hose being exposed in the region of the joint in at least one angular position of the crane booms,
    characterized in that at least one flexurally elastic sheet (6) is provided which is connected with the at least one hose or covers it at least in the exposed region and which can flex when the angular position of the at least two crane booms (3, 4) is changed,
    and in that said at least one flexurally elastic sheet (6) can be moved into or respectively out of one of the crane booms (3) upon a change in the angular position of the crane booms (3, 4).
  2. A mobile crane according to claim 1, characterized in that exactly one flexurally elastic sheet (6) is provided.
  3. A mobile crane according to claim 1, characterized in that two flexurally elastic sheets (6) are provided, wherein the at least one hose runs between the sheets (6).
  4. A mobile crane according to one of claims 1 to 3, characterized in that at least one cuff (7) for said at least one hose is arranged on said at least one flexurally elastic sheet (6).
  5. A mobile crane according to one of claims 3 or 4, characterized in that said two flexurally elastic sheets (6) are separated by a smaller distance in their central region than at one of their two end regions.
  6. A mobile crane according to one of claims 1 to 5, characterized in that said at least one flexurally elastic sheet (6) is imperforate.
  7. A mobile crane according to one of claims 1 to 6, characterized in that said at least one flexurally elastic sheet (6) consists of metal, preferably of spring steel, or of plastic, preferably of polyethylene.
  8. A mobile crane according to one of claims 1 to 7, characterized in that the thickness of the at least one flexurally elastic sheet (6) is between 0.3 mm and 3 mm and is preferably approximately 0.4 mm or approximately 2 mm.
EP09775558A 2008-07-11 2009-07-09 Vehicle crane having hose guide Active EP2297020B1 (en)

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AT10892008 2008-07-11
PCT/AT2009/000269 WO2010003164A1 (en) 2008-07-11 2009-07-09 Vehicle crane having hose guide

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EP2297020B1 true EP2297020B1 (en) 2012-09-19

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PL2297020T3 (en) 2013-02-28
WO2010003164A1 (en) 2010-01-14
US8505570B2 (en) 2013-08-13
US20110132862A1 (en) 2011-06-09
EP2297020A1 (en) 2011-03-23
CN102089234B (en) 2013-12-04
CN102089234A (en) 2011-06-08
AT11198U1 (en) 2010-06-15
DK2297020T3 (en) 2012-12-10

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