EP1842823B1 - Two-part telescopic arm of a crane - Google Patents

Two-part telescopic arm of a crane Download PDF

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Publication number
EP1842823B1
EP1842823B1 EP06007076A EP06007076A EP1842823B1 EP 1842823 B1 EP1842823 B1 EP 1842823B1 EP 06007076 A EP06007076 A EP 06007076A EP 06007076 A EP06007076 A EP 06007076A EP 1842823 B1 EP1842823 B1 EP 1842823B1
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EP
European Patent Office
Prior art keywords
arm
crane
connections
articulated arm
articulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06007076A
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German (de)
French (fr)
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EP1842823A1 (en
Inventor
Hannes Steindl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Epsilon Kran GmbH
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Epsilon Kran GmbH
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36930546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1842823(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to DE502006008107T priority Critical patent/DE502006008107D1/en
Priority to ES09011260T priority patent/ES2354406T3/en
Priority to DK06007076T priority patent/DK1842823T3/en
Priority to SI200630504T priority patent/SI1842823T1/en
Priority to ES06007076T priority patent/ES2330959T3/en
Priority to DK09011260.8T priority patent/DK2135836T3/en
Priority to AT09011260T priority patent/ATE484479T1/en
Application filed by Epsilon Kran GmbH filed Critical Epsilon Kran GmbH
Priority to SI200630853T priority patent/SI2135836T1/en
Priority to EP09011260A priority patent/EP2135836B1/en
Priority to DE502006004856T priority patent/DE502006004856D1/en
Priority to EP06007076A priority patent/EP1842823B1/en
Priority to AT06007076T priority patent/ATE443022T1/en
Publication of EP1842823A1 publication Critical patent/EP1842823A1/en
Publication of EP1842823B1 publication Critical patent/EP1842823B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—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
    • B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands
    • 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

Definitions

  • the invention relates to an extendable from the articulated arm of a crane two-part telescopic arm with a crane-side outer and an end-side inner arm, inside the crane arm pipes lead to connections in the end of the Knickerarms and lead hose lines from the terminals to the end inner arm.
  • Generic telescopic arms are used on cranes for the transport and lifting of cargo by a working device, such as a gripper, attached to the end-side arm.
  • the articulated arm describes the arm from which the at least two-part telescopic arm moves out.
  • Such an articulated arm is pivotable, for example via a rotary joint relative to a base on which the articulated arm is mounted.
  • In the end of the articulated arm are in generic telescopic arms connections leading to which pipes a hydraulic unit. From these connections hose lines lead inside the telescopic arm to the exposed end of the inner arm, where further connections for hydraulically operated devices (such as a gripper) are located.
  • a generic telescopic arm discloses the DE 196 13 700 A1 ,
  • Object of the present invention is therefore to provide a telescopic arm of the type mentioned, in which a renewal of the hose lines is much easier.
  • terminals are partially covered by a removable cover, not only is better accessibility to the hose lines given, but also easier to check whether the connections of the hose lines firmly to the Sit connections or possibly loosened screw must be tightened.
  • the cover has an approximately U-shaped cross-section, so that the cover can be pulled down easily from the articulated arm after the releasable attachment mechanisms (e.g., threaded connections) have been opened.
  • connections are arranged on a mounting block fixed in the end region of the articulated arm.
  • a mounting block fixed in the end region of the articulated arm.
  • Generic extendable two-part telescopic arms are designed such that when extending the crane-side part of the same arm at the same time the end-side arm, which is inserted in the interior of the crane-side arm, moves out of the crane-side arm.
  • the crane-side arm can be connected via an actuator (or actuator) to the articulated arm and the extract of the crane-side arm part, for example via a piston / cylinder unit.
  • the piston / Zylindcrö has a cylinder which is connected to the crane-side arm, wherein in the cylinder, a movable piston is arranged with a piston rod which is connected to the articulated arm.
  • the piston By introducing hydraulic fluid into the cylinder, the piston is pushed back and the crane-side arm moves out of the articulated arm.
  • the crane-side arm moves relative to the articulated arm.
  • the end-side arm moves relative to the crane-side arm, this must move in relation to the articulated arm at a higher speed.
  • the articulated arm with the end-side arm part via a chain (or eg a wedge or toothed belt, etc.) is connected, which is deflected by a sprocket.
  • Such a construction has the disadvantage that the individual connections are distributed over the articulated arm.
  • the connections on one In the end region of the articulated arm fixed mounting block are arranged, proven to be favorable when a chain which extends from the articulated arm via a crankshaft arranged on the sub-arm sprocket to the end (inner) arm, is connected to the end remote from the articulated end of the month block.
  • the chain is connected to a chain tensioner arranged on the mounting block.
  • Fig. 1 is a telescopic arm shown in the prior art.
  • the articulated arm 1 can be seen, which is rotatable about an axis 2 relative to a (not shown) base.
  • a crane-side outer arm part 3 and an end-side inner arm part 4 Inside the articulated arm 1 there is a two-part telescopic arm a crane-side outer arm part 3 and an end-side inner arm part 4, wherein hose lines 5 are connected to a fixed in the end of the articulated arm month block 6, lead to the pipes (not shown) of a hydraulic unit.
  • the telescopic arm is now moved as follows:
  • the spring device 7 consists of a cylinder 8 with a movable piston 9 and a piston rod 10 (indicated by dashed lines), the piston rod 10 fixed to the articulated arm 1 is and the cylinder 8 is attached to the crane-side outer arm 3 via a cross strut 20.
  • hydraulic fluid for example, via the piston rod 10 into the interior of the cylinder 8 in the cylinder chamber 8 'is introduced, the hydraulic fluid displaces the piston 9 and the cylinder 8 moves relative to the piston 9 and moves due to the cross member 20 to the crane side arm 3 also this part of arm 3 (in the case shown to the right).
  • the inner end-side arm 4 can move relative to the crane-side outer arm 3, a chain 11 is fixed to the articulated arm 1 and extends over a sprocket 12 in the interior to the inner end-side arm 4, where the chain 11 is mounted. If now moves the outer crane-side arm 3, automatically moves the sprocket 12 away from the point where the chain 11 is fixed to the articulated arm 1, since the chain is applied to the sprocket 12, that the chain 11 by twice the path length the sprocket 12 must be steered in comparison to the path that the crane-side arm 3 travels (relative to the articulated arm). When retracting, the analog mechanism comes to bear by means of a second chain 11 'and a second sprocket 12'.
  • a crane arm according to the invention can now be seen in a partially broken-away view, in which in particular in the encircled section A (FIG. Fig. 2b ), the removable cover 21 can be seen, which is approximately U-shaped in cross-section and is placed on the articulated arm, under which the mounting block 6 is seated (see also the detail sections of Fig. 3a and 3b ).
  • the actual cover 21 can now be easily removed by simple screws or wing nuts, for example, whereby the hose lines 5 and Pipes 5 'and their connections 15, which are arranged here parallel to the Teleskopausziehraum, are easily accessible.
  • the mounting block 6 additionally has a chain tensioner 22, in which the connection point 23 of the chain is movable relative to the mounting block 6, in that the connection point 23 to the chain has a thread (not shown) and a nut 24 attached to the mounting block 6 sitting is rotatable.
  • a sliding shoe 24 is also attached, which serves as a bearing for the relative movement between articulated arm 1 and outer crane-side arm 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The arm has crane extendable two-piece telescope arm with a crane-lateral exterior partial arm (3) and an end sided internal partial arm (4). The crane arm has piping, which leads to connections within the end area of the buckling arm. The connections are covered partly by a cover (21) detachably arranged at the end area of the buckling arm (1). The distance of the connections of the hose lines (5) is accessible. An independent claim is also included for a telescope arm with the cover with a u-shaped cross section.

Description

Die Erfindung betrifft einen aus dem Knickarm eines Kranes ausfahrbaren zweiteiligen Teleskoparm mit einem kranseitigen äußeren und einem endseitigen inneren Teilarm, wobei im Inneren des Kranarms Rohrleitungen zu Anschlüssen im Endbereich des Knickerarms führen und Schlauchleitungen von den Anschlüssen zum endseitigen inneren Teilarm führen.The invention relates to an extendable from the articulated arm of a crane two-part telescopic arm with a crane-side outer and an end-side inner arm, inside the crane arm pipes lead to connections in the end of the Knickerarms and lead hose lines from the terminals to the end inner arm.

Gattungsgemäße Teleskoparme werden auf Kränen zum Transport und zum Anheben von Ladegut verwendet, indem am endseitigen Teilarm ein Arbeitsgerät, wie z.B. ein Greifer, angebracht ist. Der Knickarm beschreibt dabei den Arm, aus dem der zumindest zweiteilige Teleskoparm herausfährt. Ein solcher Knickarm ist beispielsweise über ein Drehgelenk relativ zu einer Basis, auf der der Knickarm befestigt ist, verschwenkbar. Im Endbereich des Knickarms befinden sich bei gattungsgemäßen Teleskoparmen Anschlüsse, zu denen Rohrleitungen einer Hydraulikeinheit führen. Von diesen Anschlüssen führen im Inneren des Teleskoparms Schlauchleitungen zum freiliegenden Ende des inneren Teilarms, wo sich weitere Anschlüsse für hydraulisch betriebene Geräte (wie einen Greifer) befinden. Einen gattungsgemäßen Teleskoparm offenbart beispielsweise die DE 196 13 700 A1 .Generic telescopic arms are used on cranes for the transport and lifting of cargo by a working device, such as a gripper, attached to the end-side arm. The articulated arm describes the arm from which the at least two-part telescopic arm moves out. Such an articulated arm is pivotable, for example via a rotary joint relative to a base on which the articulated arm is mounted. In the end of the articulated arm are in generic telescopic arms connections leading to which pipes a hydraulic unit. From these connections hose lines lead inside the telescopic arm to the exposed end of the inner arm, where further connections for hydraulically operated devices (such as a gripper) are located. A generic telescopic arm, for example, discloses the DE 196 13 700 A1 ,

Nachteilig am Stand der Technik hat es sich erwiesen, dass durch natürlichen Verschleiß aufgrund des teleskopartigen Ein- und Ausfahrens der Arme die Schlauchleitungen im Inneren des Teleskoparms von Zeit zu Zeit erneuert werden müssen und hierzu einige aufwendige Arbeitsschritte notwendig sind.A disadvantage of the prior art, it has been found that due to the natural wear due to the telescopic retraction and extension of the arms, the hose lines must be renewed in the interior of the telescopic arm from time to time and this requires some elaborate steps are necessary.

Aufgabe der vorliegenden Erfindung ist es daher, einen Teleskoparm der eingangs genannten Gattung zu schaffen, bei dem eine Erneuerung der Schlauchleitungen wesentlich erleichtert ist.Object of the present invention is therefore to provide a telescopic arm of the type mentioned, in which a renewal of the hose lines is much easier.

Erfindungsgemäß wird dies erreicht, indem die Anschlüsse teilweise von einer am Endbereich des Knickarms angeordneten abnehmbaren Abdeckung überdeckt sind, nach deren Entfernung die Anschlüsse der Schlauchleitungen zugänglich sind.According to the invention this is achieved by the ports are partially covered by a arranged at the end of the articulated arm removable cover, after their removal, the connections of the hose lines are accessible.

Indem die Anschlüsse teilweise von einer abnehmbaren Abdeckung überdeckt sind, ist nicht nur eine bessere Zugänglichkeit zu den Schlauchleitungen gegeben, sondern auch leichter überprüfbar, ob die Anschlüsse der Schlauchleitungen fest an den Anschlüssen sitzen oder gegebenenfalls gelockerte Schraubverbindungen nachgezogen werden müssen.By the terminals are partially covered by a removable cover, not only is better accessibility to the hose lines given, but also easier to check whether the connections of the hose lines firmly to the Sit connections or possibly loosened screw must be tightened.

Im bevorzugten Fall ist vorgesehen, dass die Abdeckung einen etwa U-förmigen Querschnitt aufweist, da so die Abdeckung leicht vom Knickarm herabgezogen werden kann, nachdem die lösbare Befestigungsmechanismen (z.B. Schraubverbindungen) geöffnet wurden.In the preferred case, it is provided that the cover has an approximately U-shaped cross-section, so that the cover can be pulled down easily from the articulated arm after the releasable attachment mechanisms (e.g., threaded connections) have been opened.

Für eine besonders kompakte Bauweise ist im bevorzugten Ausführungsbeispiel vorgesehen, dass die Anschlüsse auf einem im Endbereich des Knickarms fixierten Montageblock angeordnet sind. Um die Kompaktheit und Zugänglichkeit im Anschlussbereich weiter zu verbessern, kann vorgesehen sein, dass nach Entfernung der Abdeckung auch die Anschlüsse der Rohrleitungen zugänglich sind.For a particularly compact construction, it is provided in the preferred embodiment that the connections are arranged on a mounting block fixed in the end region of the articulated arm. To further improve the compactness and accessibility in the connection area, it can be provided that after removal of the cover, the connections of the pipes are accessible.

Gattungsgemäße ausfahrbare zweiteilige Teleskoparme sind derart ausgebildet, dass beim Ausfahren des kranseitigen Teilarms gleichzeitig der endseitige Teilarm, der im Inneren des kranseitigen Teilarms eingebracht ist, aus dem kranseitigen Teilarm herausfährt. Dazu kann der kranseitige Teilarm über einen Aktor (oder Aktuator) mit dem Knickarm verbunden sein und der Auszug des kranseitigen Teilarms z.B. über eine Kolben/Zylindereinheit erfolgen. Beispielsweise erfolgt dies in der Art, dass die Kolben/Zylindcreinheit einen Zylinder aufweist, der mit dem kranseitigen Teilarm verbunden ist, wobei im Zylinder ein verfahrbarer Kolben mit einer Kolbenstange angeordnet ist, die mit dem Knickarm verbunden ist. Durch das Einbringen von Hydraulikflüssigkeit in den Zylinder wird der Kolben zurückgedrängt und der kranseitige Teilarm fährt aus dem Knickarm heraus. Somit bewegt sich der kranseitige Teilarm relativ zum Knickarm. Damit sich nun auch der endseitige Teilarm relativ zum kranseitigen Teilarm bewegt, muss sich dieser im Verhältnis zum Knickarm mit höherer Geschwindigkeit bewegen. Zu diesem Zweck ist der Knickarm mit dem endseitigen Teilarm über eine Kette (oder z.B. einen Keil- oder Zahnriemen etc.) verbunden, die über ein Kettenrad umgelenkt wird. Wenn sich nun der kranseitige Teilarm relativ zum Knickarm bewegt, so wird aufgrund der Relativbewegung des Kettenrades zum Knickarm und zum endseitigen Teilarm die Kette um die doppelte Wegstrecke der Bewegung des kranseitigen Teilarms um die Kettenrolle gelenkt, sodass sich der endseitige Kranarm um die doppelte Weglänge des kranseitigen Kranarms in die Bewegungsrichtung verschiebt. (Zum Einfahren des Teleskoparms ist ein analoger umgekehrt angeordneter Mechanismus mit einer zweiten Kette und einem zweiten Kettenrad vorgesehen, der im Rahmen der Figurenbeschreibung näher erläutert wird.)Generic extendable two-part telescopic arms are designed such that when extending the crane-side part of the same arm at the same time the end-side arm, which is inserted in the interior of the crane-side arm, moves out of the crane-side arm. For this purpose, the crane-side arm can be connected via an actuator (or actuator) to the articulated arm and the extract of the crane-side arm part, for example via a piston / cylinder unit. For example, this is done in the way that the piston / Zylindcreinheit has a cylinder which is connected to the crane-side arm, wherein in the cylinder, a movable piston is arranged with a piston rod which is connected to the articulated arm. By introducing hydraulic fluid into the cylinder, the piston is pushed back and the crane-side arm moves out of the articulated arm. Thus, the crane-side arm moves relative to the articulated arm. So that now also the end-side arm moves relative to the crane-side arm, this must move in relation to the articulated arm at a higher speed. For this purpose, the articulated arm with the end-side arm part via a chain (or eg a wedge or toothed belt, etc.) is connected, which is deflected by a sprocket. If now moves the crane-side arm relative to the articulated arm, so the chain is deflected by twice the distance of movement of the crane-side arm to the chain roller due to the relative movement of the sprocket to the articulated arm and the end arm, so that the end crane arm by twice the path length of crane-side crane arm moves in the direction of movement. (To retract the telescopic arm is an analog reversely arranged mechanism provided with a second chain and a second sprocket, which is explained in more detail in the description of the figures.)

Eine solche Bauweise hat den Nachteil, dass die einzelnen Anschlüsse über den Knickarm verteilt sind. Für eine kompakte Bauweise und zur Verbesserung der Zugänglichkeit der Anschlüsse hat es sich bei einem aus dem Knickarm eines Kranes ausfahrbaren zweiteiligen Teleskoparm mit einem kranseitigen äußeren und einem endseitigen inneren Teilarm, wobei Schlauchleitungen von den Anschlüssen zum endseitigen inneren Teilarm führen, wobei die Anschlüsse auf einem im Endbereich des Knickarms fixierten Montageblock angeordnet sind, als günstig erwiesen, wenn eine Kette, welche vom Knickarm über ein am kranseitigen Teilarm angeordnetes Kettenrad zum endseitigen (inneren) Teilarm verläuft, mit dem vom Knickarm abgewandten Ende des Monateblockes verbunden ist. Besonders bevorzugt ist dabei vorgesehen, dass die Kette mit einem auf dem Montageblock angeordneten Kettenspanner verbunden ist.Such a construction has the disadvantage that the individual connections are distributed over the articulated arm. For a compact design and to improve the accessibility of the connections, it has at a extendable from the articulated arm of a crane two-part telescopic arm with a crane-side outer and an end-side inner arm, with hose leads from the terminals to the end inner arm, the connections on one In the end region of the articulated arm fixed mounting block are arranged, proven to be favorable when a chain which extends from the articulated arm via a crankshaft arranged on the sub-arm sprocket to the end (inner) arm, is connected to the end remote from the articulated end of the month block. It is particularly preferred that the chain is connected to a chain tensioner arranged on the mounting block.

Da der Knickarm relativ zum kranseitigen Teilarm bewegt wird, sind Gleitlager erforderlich, die die Relativbewegung begünstigen. Vorteilhaft hat es sich erwiesen, wenn der Monateblock einen Gleitschuh als Gleitlager für den kranseitigen Teilarm trägt.Since the articulated arm is moved relative to the crane-side arm, plain bearings are required, which favor the relative movement. It has proven advantageous if the month block carries a sliding block as a sliding bearing for the crane-side arm.

Weitere Details und Vorteile der Erfindung werden anhand der Figuren und Figurenbeschreibung erläutert. Dabei zeigt

Fig. 1
stark schematisiert einen Querschnitt durch einen Teleskoparm nach bekanntem Stand der Technik,
Fig. 2a u. 2b
ein Ausführungsbeispiel eines erfindungsgemäßen Teleskoparms in zwei unterschiedlich weggebrochenen Ansichten,
Fig. 3a u. 3b
eine Detailansicht der abnehmbaren Abdeckung der Ansichten von Fig. 2a und 2b und
Fig. 4
einen Montageblock eines Ausführungsbeispieles.
Further details and advantages of the invention will be explained with reference to the figures and the description of the figures. It shows
Fig. 1
very schematically a cross section through a telescopic arm according to the known prior art,
Fig. 2a u. 2 B
An embodiment of a telescopic arm according to the invention in two differently broken views,
Fig. 3a u. 3b
a detail view of the removable cover of the views of Fig. 2a and 2 B and
Fig. 4
an assembly block of an embodiment.

In Fig. 1 ist ein Teleskoparm nach bekanntem Stand der Technik abgebildet. Dabei ist der Knickarm 1 erkennbar, der um eine Achse 2 relativ zu einer (nicht gezeigten) Basis drehbar ist. Im Inneren des Knickarms 1 befindet sich ein zweiteiliger Teleskoparm mit einem kranseitigen äußeren Teilarm 3 und einem endseitigen inneren Teilarm 4, wobei Schlauchleitungen 5 an einem im Endbereich des Knickarms fixierten Monateblock 6 angeschlossen sind, zu dem Rohrleitungen (nicht gezeigt) einer Hydraulikeinheit führen. (Der Übersichtlichkeit halber ist nur eine Schlauchleitung 5 gezeigt.) Der Teleskoparm wird nun folgendermaßen bewegt: Die Federvorrichtung 7 besteht aus einem Zylinder 8 mit einem darin verfahrbaren Kolben 9 und einer Kolbenstange 10 (strichliert angedeutet), wobei die Kolbenstange 10 am Knickarm 1 fixiert ist und der Zylinder 8 am kranseitigen äußeren Teilarm 3 über eine Querstrebe 20 befestigt ist. Wenn nun Hydraulikflüssigkeit z.B. über die Kolbenstange 10 in das Innere des Zylinders 8 in den Zylinderraum 8' eingeleitet wird, so verdrängt die Hydraulikflüssigkeit den Kolben 9 bzw. bewegt sich der Zylinder 8 relativ zum Kolben 9 und aufgrund der Querstrebe 20 zum kranseitigen Teilarm 3 bewegt sich auch dieser Teilarm 3 (im gezeigten Fall nach rechts). Damit sich auch der innere endseitige Teilarm 4 relativ zum kranseitigen äußeren Teilarm 3 bewegen kann, ist eine Kette 11 am Knickarm 1 fixiert und reicht über ein Kettenrad 12 in das Innere zum inneren endseitigen Teilarm 4, wo die Kette 11 angebracht ist. Wenn sich nun der äußere kranseitige Teilarm 3 bewegt, bewegt sich automatisch auch das Kettenrad 12 weg von der Stelle, wo die Kette 11 am Knickarm 1 fixiert ist, da die Kette derart am Kettenrad 12 anliegt, dass die Kette 11 um die doppelte Weglänge um das Kettenrad 12 gelenkt werden muss im Vergleich zu dem Weg, den der kranseitige Teilarm 3 zurücklegt (relativ zum Knickarm). Beim Einfahren kommt der analoge Mechanismus zum Tragen mittels einer zweiten Kette 11' und einem zweiten Kettenrad 12'. Vom Montageblock 6 führen von Anschlüssen 15 Schlauchleitungen 5 über eine Schlauchrolle 13 zu Hydraulikanschlüssen 14 am Ende des inneren endseitigen Teilarms 4. Beim Ein- und Ausfahren des Kranarms ist ersichtlich, dass die Schlauchleitungen 5 ständig mitbewegt werden und über die Schlauchrolle 13 abgerollt werden und dadurch von Zeit zu Zeit erneuert werden müssen, da sie Verschleiß unterliegen.In Fig. 1 is a telescopic arm shown in the prior art. In this case, the articulated arm 1 can be seen, which is rotatable about an axis 2 relative to a (not shown) base. Inside the articulated arm 1 there is a two-part telescopic arm a crane-side outer arm part 3 and an end-side inner arm part 4, wherein hose lines 5 are connected to a fixed in the end of the articulated arm month block 6, lead to the pipes (not shown) of a hydraulic unit. (The sake of clarity, only one hose line 5 is shown.) The telescopic arm is now moved as follows: The spring device 7 consists of a cylinder 8 with a movable piston 9 and a piston rod 10 (indicated by dashed lines), the piston rod 10 fixed to the articulated arm 1 is and the cylinder 8 is attached to the crane-side outer arm 3 via a cross strut 20. If now hydraulic fluid, for example, via the piston rod 10 into the interior of the cylinder 8 in the cylinder chamber 8 'is introduced, the hydraulic fluid displaces the piston 9 and the cylinder 8 moves relative to the piston 9 and moves due to the cross member 20 to the crane side arm 3 also this part of arm 3 (in the case shown to the right). Thus, the inner end-side arm 4 can move relative to the crane-side outer arm 3, a chain 11 is fixed to the articulated arm 1 and extends over a sprocket 12 in the interior to the inner end-side arm 4, where the chain 11 is mounted. If now moves the outer crane-side arm 3, automatically moves the sprocket 12 away from the point where the chain 11 is fixed to the articulated arm 1, since the chain is applied to the sprocket 12, that the chain 11 by twice the path length the sprocket 12 must be steered in comparison to the path that the crane-side arm 3 travels (relative to the articulated arm). When retracting, the analog mechanism comes to bear by means of a second chain 11 'and a second sprocket 12'. From the mounting block 6 lead from connections 15 hose lines 5 via a hose reel 13 to hydraulic connections 14 at the end of the inner end-side arm 4. When retracting and extending the crane arm, it can be seen that the hose lines are constantly moved 5 and are rolled over the hose reel 13 and thereby must be renewed from time to time as they are subject to wear.

In den Fig. 2a und 2b (Bezugszeichen wie in 2a) ist nun ein erfindungsgemäßer Kranarm in teilweise weggebrochener Ansicht erkennbar, bei dem insbesondere im eingekreisten Abschnitt A (Fig. 2b) die abnehmbare Abdeckung 21 erkennbar ist, die im Querschnitt etwa U-förmig ist und auf den Knickarm aufgesetzt wird, unter der der Montageblock 6 sitzt (siehe dazu auch die Detailausschnitte der Fig. 3a und 3b). Die eigentliche Abdeckung 21 kann nun durch einfache Schrauben oder beispielsweise Flügelmuttern leicht entfernt werden, wodurch die Schlauchleitungen 5 und Rohrleitungen 5' bzw. deren Anschlüsse 15, die hier parallel zur Teleskopausziehrichtung angeordnet sind, gut zugänglich sind. Besonders günstig ist es, die Abdeckung 21 im Endbereich, und zwar auf der Oberseite des Knickarmes 1, anzubringen. Die Rohrleitungen 5' führen im Inneren des Kranes von der Hydraulikeinrichtung zum Montageblock 6, die Schlauchleitungen 5 führen im Inneren des Teleskoparms zu den Anschlüssen 14. Das Teil 21' dient der Verstärkung des Knickarms 1 im Endbereich. Weiters erkennbar ist, dass auf dem Montageblock 6 die Kette 11 fixiert ist. In Fig. 4 ist noch einmal im Detail erkennbar, wie ein Montageblock 6 aussehen .könnte (ohne angeschlossene Kette 11 bzw. angeschlossene Schlauchleitungen 5 oder Rohrleitungen 5'). Der Montageblock 6 weist in diesem Fall zusätzlich noch einen Kettenspanner 22 auf, in dem die Verbindungsstelle 23 der Kette relativ zum Montageblock 6 beweglich ist, indem die Verbindungsstelle 23 zur Kette ein (nicht gezeigtes) Gewinde aufweist und durch eine Mutter 24, die am Montageblock 6 sitzt verdrehbar ist. Dadurch kann die Kette 11 ständig unter Spannung gehalten werden. An der Unterseite des Montageblocks ist darüber hinaus ein Gleitschuh 24 angebracht, der als Lager für die relative Bewegung zwischen Knickarm 1 und äußerem kranseitigem Teilarm 3 dient.In the Fig. 2a and 2 B (Reference numeral as in FIG. 2a), a crane arm according to the invention can now be seen in a partially broken-away view, in which in particular in the encircled section A (FIG. Fig. 2b ), the removable cover 21 can be seen, which is approximately U-shaped in cross-section and is placed on the articulated arm, under which the mounting block 6 is seated (see also the detail sections of Fig. 3a and 3b ). The actual cover 21 can now be easily removed by simple screws or wing nuts, for example, whereby the hose lines 5 and Pipes 5 'and their connections 15, which are arranged here parallel to the Teleskopausziehrichtung, are easily accessible. It is particularly advantageous to attach the cover 21 in the end region, specifically on the upper side of the articulated arm 1. The pipes 5 'lead inside the crane from the hydraulic device to the mounting block 6, the hose lines 5 lead inside the telescopic arm to the terminals 14. The part 21' serves to reinforce the articulated arm 1 in the end. It can also be seen that on the mounting block 6, the chain 11 is fixed. In Fig. 4 Once again it can be seen in detail how a mounting block 6 could look (without connected chain 11 or connected hose lines 5 or pipes 5 '). In this case, the mounting block 6 additionally has a chain tensioner 22, in which the connection point 23 of the chain is movable relative to the mounting block 6, in that the connection point 23 to the chain has a thread (not shown) and a nut 24 attached to the mounting block 6 sitting is rotatable. As a result, the chain 11 can be kept constantly under tension. On the underside of the mounting block, a sliding shoe 24 is also attached, which serves as a bearing for the relative movement between articulated arm 1 and outer crane-side arm 3.

Claims (7)

  1. A two-part telescopic arm extendable from the articulated arm of a crane and comprising a crane-side outer arm portion and an end-side inner arm portion, wherein in the interior of the crane arm pipe conduits lead to connections in the end region of the articulated arm and hose conduits lead to the connections to the end-side inner arm portion, characterised in that the connections (15) are partially covered by a removable cover (21) arranged at the end region of the articulated arm (1) and after the removal of which the connections (15) of the hose conduits (5) are accessible.
  2. A two-part telescopic arm extendable from the articulated arm of a crane according to claim 1 characterised in that the cover (21) is of a substantially U-shaped cross-section.
  3. A two-part telescopic arm extendable from the articulated arm of a crane according to claim 1 or claim 2 characterised in that the connections (15) are arranged on a mounting block (6) fixed in the end region of the articulated arm (1).
  4. A two-part telescopic arm extendable from the articulated arm of a crane according to one of claims 1 to 3 characterised in that the connections of the pipe conduits (5') are also accessible after removal of the cover (21).
  5. A two-part telescopic arm extendable from the articulated arm of a crane and comprising a crane-side outer arm portion and an end-side inner arm portion, wherein hose conduits lead from the connections to the end-side inner arm portion, wherein the connections (15) are arranged on a mounting block (6) fixed in the end region of the articulated arm (1), according to one of claims 1 to 4, characterised in that a chain (11) which extends from the articulated arm (1) over a chain wheel (12) arranged at the crane-side arm portion to the end-side inner arm portion (4) is connected to the end of the mounting block (6), that is remote from the articulated arm (1).
  6. A two-part telescopic arm extendable from the articulated arm of a crane according to claim 5 characterised in that the chain (11) is connected to a chain tensioner (22) arranged on the mounting block (6).
  7. A two-part telescopic arm extendable from the articulated arm of a crane according to one of claims 3 to 6 characterised in that the mounting block (6) carries a slide shoe (24) as a slide mounting for the crane-side arm portion (3).
EP06007076A 2006-04-03 2006-04-03 Two-part telescopic arm of a crane Active EP1842823B1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP09011260A EP2135836B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
ES09011260T ES2354406T3 (en) 2006-04-03 2006-04-03 TELESCOPIC ARM OF TWO PARTS OF A CRANE.
DE502006004856T DE502006004856D1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
ES06007076T ES2330959T3 (en) 2006-04-03 2006-04-03 TELESCOPIC ARM OF TWO PARTS OF A CRANE.
DK09011260.8T DK2135836T3 (en) 2006-04-03 2006-04-03 Telescopic arm in two parts on a crane
AT09011260T ATE484479T1 (en) 2006-04-03 2006-04-03 TWO-PART TELESCOPIC ARM OF A CRANE
DE502006008107T DE502006008107D1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
SI200630853T SI2135836T1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
DK06007076T DK1842823T3 (en) 2006-04-03 2006-04-03 Telescopic arm in two parts on a crane
SI200630504T SI1842823T1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
EP06007076A EP1842823B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
AT06007076T ATE443022T1 (en) 2006-04-03 2006-04-03 TWO-PART TELESCOPIC ARM OF A CRANE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06007076A EP1842823B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09011260A Division EP2135836B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane

Publications (2)

Publication Number Publication Date
EP1842823A1 EP1842823A1 (en) 2007-10-10
EP1842823B1 true EP1842823B1 (en) 2009-09-16

Family

ID=36930546

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06007076A Active EP1842823B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane
EP09011260A Active EP2135836B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09011260A Active EP2135836B1 (en) 2006-04-03 2006-04-03 Two-part telescopic arm of a crane

Country Status (6)

Country Link
EP (2) EP1842823B1 (en)
AT (2) ATE484479T1 (en)
DE (2) DE502006008107D1 (en)
DK (2) DK2135836T3 (en)
ES (2) ES2330959T3 (en)
SI (2) SI2135836T1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2712827A1 (en) 2012-09-28 2014-04-02 Mesera Cranes Finland Oy A lifting device and a chain lubrication arrangement of a lifting device
EP2712836A1 (en) 2012-09-28 2014-04-02 Mesera Cranes Finland Oy A telescopic crane and a telescopic boom arrangement of a telescopic crane
EP3456679A1 (en) 2017-09-15 2019-03-20 Pisek - Vitli Krpan, d.o.o. A telescopic arm for a forestry crane

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014101842U1 (en) 2014-03-19 2015-06-25 Paul Vahle Gmbh & Co. Kg Push chain drive for telescopic arm
DE102014105228A1 (en) 2014-04-11 2015-10-15 Paul Vahle Gmbh & Co. Kg Positioning area for a route for vertical insertion of pantograph contacts into the tracks of the route
DE102014103741A1 (en) 2014-03-19 2015-09-24 Paul Vahle Gmbh & Co. Kg Telescopic arm pantograph system for cranes, container cranes, ERTGs and conveyors
EP2947037B1 (en) * 2014-05-23 2018-05-02 EPSILON Kran GmbH. Crane
DE102015100439B3 (en) * 2014-09-11 2015-12-24 Thomas Haeusler Easy to maintain telescopic swivel arm and working or operating procedures
CN104989797B (en) * 2015-06-30 2017-08-04 南京晨光集团有限责任公司 Three-level telescopic arm
EP3872022A1 (en) 2020-02-28 2021-09-01 Hiab AB A telescopic boom, and a crane and a vehicle provided with the telescopic boom

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Publication number Priority date Publication date Assignee Title
US3893480A (en) * 1973-12-26 1975-07-08 Glenn G Dunbar Hydraulic line assembly
DE19613700A1 (en) * 1996-03-29 1997-10-02 M E P Gmbh Ges Fuer Consulting Telescopically interlocking machine part, e.g. for excavator or crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2712827A1 (en) 2012-09-28 2014-04-02 Mesera Cranes Finland Oy A lifting device and a chain lubrication arrangement of a lifting device
EP2712836A1 (en) 2012-09-28 2014-04-02 Mesera Cranes Finland Oy A telescopic crane and a telescopic boom arrangement of a telescopic crane
EP3456679A1 (en) 2017-09-15 2019-03-20 Pisek - Vitli Krpan, d.o.o. A telescopic arm for a forestry crane

Also Published As

Publication number Publication date
ATE443022T1 (en) 2009-10-15
EP2135836B1 (en) 2010-10-13
DE502006004856D1 (en) 2009-10-29
ES2330959T3 (en) 2009-12-17
DK2135836T3 (en) 2010-12-13
DE502006008107D1 (en) 2010-11-25
SI2135836T1 (en) 2011-01-31
DK1842823T3 (en) 2009-11-23
ES2354406T3 (en) 2011-03-14
EP1842823A1 (en) 2007-10-10
ATE484479T1 (en) 2010-10-15
EP2135836A1 (en) 2009-12-23
SI1842823T1 (en) 2010-02-26

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