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EP0685422B1 - Device for erecting and aligning of a self-erecting crane - Google Patents

Device for erecting and aligning of a self-erecting crane Download PDF

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Publication number
EP0685422B1
EP0685422B1 EP95103522A EP95103522A EP0685422B1 EP 0685422 B1 EP0685422 B1 EP 0685422B1 EP 95103522 A EP95103522 A EP 95103522A EP 95103522 A EP95103522 A EP 95103522A EP 0685422 B1 EP0685422 B1 EP 0685422B1
Authority
EP
European Patent Office
Prior art keywords
column
base frame
supporting tube
working cylinder
crane
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.)
Expired - Lifetime
Application number
EP95103522A
Other languages
German (de)
French (fr)
Other versions
EP0685422A1 (en
Inventor
Josef Weiland
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.)
LISSMAC Maschinenbau u Diamantwerkzeuge GmbH
Original Assignee
LISSMAC Maschinenbau u Diamantwerkzeuge GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LISSMAC Maschinenbau u Diamantwerkzeuge GmbH filed Critical LISSMAC Maschinenbau u Diamantwerkzeuge GmbH
Publication of EP0685422A1 publication Critical patent/EP0685422A1/en
Application granted granted Critical
Publication of EP0685422B1 publication Critical patent/EP0685422B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/82Luffing gear

Definitions

  • the invention relates to a device for installation and aligning a light crane, which consists of a Base frame, a vertical supported by the base frame Pillar, a boom supported by the pillar as well as a hydraulically operated working cylinder exists, with the working cylinder on both Column and attached to the base frame of the light crane is.
  • EP-A-0 473 518 is a hydraulically operated Working cylinder known, both on the column as is also attached to the base frame.
  • the disadvantage here is that the position of the crane at one Failure of the working cylinder is not sufficiently secured and the working cylinder does not turn off leaves.
  • the invention is therefore based on the object simply constructed and operated device for To set up and align a light crane, with the sufficient stability of the Cranes can be guaranteed.
  • the object is achieved in that one arranged parallel to the working cylinder, in her Adjustable lengthwise and to the lifting height of the Adjustable cylinder as a combination with the working cylinder both on the column and is arranged on the base frame of the light crane.
  • the parallel combined with the working cylinder as a pair Support secures the position of the crane itself when the hydraulic system of the working cylinder fails or turned off.
  • the crane is in the working position without manual effort or in transport position and is securely protected against collapsing on all sides.
  • the displacement or adjustment is telescopic in the longitudinal direction possible in a very simple manner and the adaptation to the respective lifting height of the working cylinder practicable.
  • This guide piece has the function of Limitation of the adjustability of the inner, in the outer Support pipe guided, support pipe. On the other hand it is used for the exact guidance of the inner support tube and also as a cover for the outer support tube.
  • a development of the invention is that in Inside the outer support tube an adjusting nut is guided, which is axially with an internal thread and is provided radially with a continuous slot.
  • This slot offers the possibility that the already Plug pins described above in this intervene and the subsequent locking of the support and thus lock the crane position can.
  • the outer shape of the adjusting nut is the inner one Adjusted contours of the outer support tube. she serves to accommodate the inner support tube.
  • the adjusting screw can have a radial through hole be provided so that in this hole also the socket pin already described Locking the support can intervene later.
  • the adjusting screw can be adjusted so that the through hole of the adjusting screw with the Elongated hole of the adjusting nut and one of the two Through holes of the outer support tube covers and thus the socket pin through all three holes inserted at the same time, the locking of the support now guaranteed.
  • the through hole at the top of the outer support tube serves to lock in the working state, i.e. when the inner support tube including the screwed adjusting nut and adjusting screw is extended and the crane is stationary.
  • the Through hole at the lower end of the outer support tube serves for locking in the transport state (Retracted inner support tube, i.e. when the crane is folded).
  • the adjusting screw is designed so that with an external element (e.g. key), the adjustment of the adjusting screw can be carried out can.
  • the set Position of the adjusting screw in the adjusting nut undergoes an additional fixation. For example by an adjusting nut from the outside penetrating screw.
  • the light crane shown in Fig. 1 consists of the Main components of base frame 1, which is a welded construction consists of steel profiles, with a steerable Trailer towing device provided and by means of wheels is mobile, one attached to the base frame 1, vertical column 2 and a swiveling boom 3, with a longitudinally displaceable, electric motor operated trolley 3, to accommodate a Crane hook.
  • the column 2 is with the base frame 1 by a combination from a support adjustable in its longitudinal direction 4 and a motor-driven hydraulic Working cylinder 5 connected.
  • the support 4 and the working cylinder 5 are as Combination as shown in Fig. 2, in the same Axle articulated parallel in joint storage one bolt 6 each on the column 2 and on the base frame 1 attached.
  • the parallel support 4 fulfills two Functions. On the one hand, it serves both in work and also in the transport position of the stabilization and Attachment of the components pillar 2 with bracket 3 and the base frame 1 of the light crane.
  • the support 4 is used for precise alignment the components of the crane in compliance with the required tolerances between boom 3 and Base frame 1 or column 2 to base frame 1.
  • the support 4 is, as can be seen from FIG. 3, in two parts, consisting of an outer support tube 7 and an inner, in this guided support tube 8, in its longitudinal direction slidable to the To be able to follow movements of the working cylinder 5.
  • the one made from square section steel outer support tube 7 is at the lower end by means of the bolt 6 articulated to the base frame 1.
  • the outer support tube 7 At the upper end is the outer support tube 7 with a Guide piece 9 which has a bore in the axial direction for receiving the inner support tube 8, locked.
  • the Guide piece 9 for example made of plastic manufactured socket 10 may be inserted.
  • the guide piece 9 can be in the outer support tube expediently be welded in.
  • the inner support tube consisting of a tubular profile 8 is at the lower end with an external thread and on provide a through hole at its upper end. The attachment is made by means of this hole the column 2 through the connecting bolt 6.
  • the one located at the lower end of the inner support tube 8 Thread is adjusted with an adjusting nut 11 screwed.
  • the threaded hole serves on the one hand, as already above mentioned, for receiving the inner support tube 8 on upper end of the adjusting nut 11.
  • the other is in the threaded hole at the bottom the adjusting nut 11 is screwed an adjusting screw 12.
  • the adjusting nut 11 is transverse to its longitudinal axis also with a continuous slot 13 for receiving a plug pin 14 provided.
  • the adjusting nut 11 has a square, the inner dimension of the outer support tube 7 adapted cross section, to screw in the support tube 8 and do not twist when adjusting the support 4 to be able to. This ensures that a radial through hole 15 in the adjusting screw 12 is present, and at both ends of the outer support tube 7 also existing continuous radial bore 16, and the slot 13 of the Adjustment nut 11 are superimposed and so that the plug pin 14 locks the support 4.
  • reinforcement plates 17 welded around the bores 16.
  • the holes are therefore less subject to wear when locking with locking pins 14.
  • the device according to the invention works as follows:
  • the inner support tube 8 still is retracted by turning the adjusting screw 12 by means of the special key mentioned above, whose pins in the holes of the adjusting screw 12th be introduced, the horizontal position of the column 2 set to base frame 1.
  • the adjusting screw 12 adjusted until its hole 15 in the area of the elongated hole 13 of the adjusting nut 11 devices.
  • the screws are unscrewed or screwed in inner support tube 8 in the thread of the adjusting nut 11.
  • the change in length of the inner support tube 8 allows the alignment of Light cranes, which was also carried out very effectively can be, if in the course of the operation of the Light crane deviations caused by wear from the vertical position of column 2 with Boom 3 to the base frame 1 must be corrected.
  • the individual parts of the support 4 can be inexpensive be made of structural steel, which is then a Surface treatment by galvanizing can experience.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

The erection device has a hydraulically operated work cylinder (5). A length-adjustable support (4) is mounted parallel to the work cylinder. It is adaptable to the lifting height of the cylinder and forms a combination unit attached to both the vertical column (2) and the supporting base frame (1) of the crane. The work cylinder combined with the support can be connected to the column and frame by connecting bolts. The support (4) comprises an outer supporting tube and an inner displaceable supporting tube. An adjustment nut guided inside the outer tube has axially an inner thread and radially a full-length oblong hole for holding a push-in bolt. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Aufstellen und Ausrichten eines Leichtkranes, welcher aus einem Grundgestell, einer vom Grundgestell getragenen vertikalen Säule, einem von der Säule aufgenommenen Ausleger sowie einem hydraulisch betriebenen Arbeitszylinder besteht, wobei der Arbeitszylinder sowohl an der Säule als auch am Grundgestell des Leichtkranes angebracht ist.The invention relates to a device for installation and aligning a light crane, which consists of a Base frame, a vertical supported by the base frame Pillar, a boom supported by the pillar as well as a hydraulically operated working cylinder exists, with the working cylinder on both Column and attached to the base frame of the light crane is.

Bisher wurde ein derartiger Kran am Einsatzort mittels einer mechanisch zu betätigenden Winde von der Transport- in die Arbeitsstellung (bzw. umgekehrt) gebracht.So far, such a crane was used on site a mechanically operated winch from the transport brought into the working position (or vice versa).

Aus der EP-A-0 473 518 ist ein hydraulisch betriebener Arbeitszylinder bekannt, der sowohl an der Säule als auch am Grundgestell angebracht ist.From EP-A-0 473 518 is a hydraulically operated Working cylinder known, both on the column as is also attached to the base frame.

Nachteilig ist dabei, daß die Lage des Kranes bei einem Versagen des Arbeitszylinders nur ungenügend gesichert ist und sich der Arbeitszylinder nicht abstellen läßt.The disadvantage here is that the position of the crane at one Failure of the working cylinder is not sufficiently secured and the working cylinder does not turn off leaves.

Ein zum Grundgestell paralleles Ausrichten des Auslegers, an dem eine Laufkatze die zu hebenden, zu senkenden bzw. zu transportierenden Lasten angehängt werden sollen, sowie eine zum Ausleger und dem Grundgestell genau senkrechte Stellung der Säule ist mit den bekannten Lösungen nicht ausreichend möglich.Aligning the boom parallel to the base frame, on which a trolley has to be lifted and lowered or loads to be transported should, as well as one for the boom and the base frame the vertical position of the column is with the known solutions are not sufficiently possible.

Bei unzulässiger Abweichung der senkrechten Stellung der Säule kann die Funktion des Leichtkranes durch die dadurch hervorgerufene statische Unsicherheit nicht mehr gewährleistet werden.In the event of an impermissible deviation from the vertical position The function of the light crane can be increased by the column static uncertainty caused thereby not be guaranteed more.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine einfach aufgebaute und zu betätigende Vorrichtung zum Aufstellen und Ausrichten eines Leichtkranes zu schaffen, mit der eine ausreichende Standsicherheit des Kranes gewährleistet werden kann. The invention is therefore based on the object simply constructed and operated device for To set up and align a light crane, with the sufficient stability of the Cranes can be guaranteed.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß eine zum Arbeitszylinder parallel angeordnete, in ihrer Längsrichtung verstellbare und an die Hubhöhe des Arbeitszylinders anpaßbare Abstützung als Kombination mit dem Arbeitszylinder sowohl an der Säule als auch am Grundgestell des Leichtkranes angeordnet ist.According to the invention the object is achieved in that one arranged parallel to the working cylinder, in her Adjustable lengthwise and to the lifting height of the Adjustable cylinder as a combination with the working cylinder both on the column and is arranged on the base frame of the light crane.

Die mit dem Arbeitszylinder als Paar kombinierte parallele Abstützung sichert die Lage des Kranes selbst dann, wenn die Hydraulik des Arbeitszylinders versagt oder abgestellt ist.The parallel combined with the working cylinder as a pair Support secures the position of the crane itself when the hydraulic system of the working cylinder fails or turned off.

Der Kran ist ohne manuellen Kraftaufwand in Arbeitsstellung bzw. in Transportstellung zu bringen und ist jederseit sicher gegen ein Zusammenklappen geschützt.The crane is in the working position without manual effort or in transport position and is securely protected against collapsing on all sides.

Es ist deshalb sehr vorteilhaft, wenn die Abstützung sowie der Arbeitszylinder mit je einem einzigen Verbindungsbolzen an der Säule sowie am Grundgestell des Leichtkranes gelenkig angebracht sind.It is therefore very advantageous if the support as well as the working cylinder with a single connecting bolt each on the column and on the base frame of the Light cranes are articulated.

Besonders vorteilhaft ist es, wenn die Abstützung zweiteilig aus einem äußeren Abstützrohr, sowie einem, in diesem geführten, inneren Abstützrohr besteht.It is particularly advantageous if the support in two parts from an outer support tube and one, in this guided, inner support tube.

Dadurch ist die Verschiebung bzw. Verstellung teleskoartig in Längsrichtung auf sehr einfache Weise möglich und die Anpassung an die jeweilige Hubhöhe des Arbeitszylinders praktizierbar. As a result, the displacement or adjustment is telescopic in the longitudinal direction possible in a very simple manner and the adaptation to the respective lifting height of the working cylinder practicable.

Weiterhin ist es sehr von Vorteil, wenn das äußere Abstützrohr an seinen beiden Enden jeweils eine radiale Durchgangsbohrung aufweist. In diese Durchgangsbohrung kann später nach vollzogener Einstellung des Kranes (Arbeits- bzw. Transportstellung) ein Steckbolzen zur Arretierung dieser Lage von außen eingeschoben werden.Furthermore, it is very advantageous if the outside Support tube at both ends of a radial Has through hole. In this through hole can later after the crane has been adjusted (Working or transport position) a plug pin inserted to lock this position from the outside become.

In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, daß die obere Stirnseite des äußeren Abstützrohres mit einem inneren Führungsstück verschlossen ist.In a further embodiment of the invention can be provided be that the upper end face of the outer support tube closed with an inner guide piece is.

Dieses Führungsstück hat zum einen die Funktion der Begrenzung der Verstellfähigkeit des inneren, im äußeren Abstützrohr geführten, Abstützrohres. Zum anderen dient es der genauen Führung des inneren Abstützrohres sowie auch als Abdeckung des äußeren Abstützrohres.This guide piece has the function of Limitation of the adjustability of the inner, in the outer Support pipe guided, support pipe. On the other hand it is used for the exact guidance of the inner support tube and also as a cover for the outer support tube.

Am einfachsten kann das Führungsstück im äußeren Abstützrohr durch Schweißen befestigt werden.The easiest way is the guide piece in the outer support tube to be attached by welding.

Eine Weiterbildung der Erfindung besteht darin, daß im Inneren des äußeren Abstützrohres eine Verstellmutter geführt ist, welche axial mit einem Innengewinde und radial mit einem durchgehenden Langloch versehen ist.A development of the invention is that in Inside the outer support tube an adjusting nut is guided, which is axially with an internal thread and is provided radially with a continuous slot.

Dieses Langloch bietet die Möglichkeit, daß der bereits vorstehend beschriebene Steckbolzen in dieses eingreifen und die spätere Arretierung der Abstützung und damit die Arretierung der Kranstellung vollziehen kann.This slot offers the possibility that the already Plug pins described above in this intervene and the subsequent locking of the support and thus lock the crane position can.

Die Verstellmutter ist in ihrer äußeren Form den inneren Konturen des äußeren Abstützrohres angepaßt. Sie dient der Aufnahme des inneren Abstützrohres.The outer shape of the adjusting nut is the inner one Adjusted contours of the outer support tube. she serves to accommodate the inner support tube.

In weiterer Ausgestaltung der Erfindung ist deshalb vorgesehen, daß das innere Abstützrohr von oben in die Verstellmutter eingeschraubt ist und dazu das Abstützrohr an seinem unteren Ende mit einem Außengewinde versehen ist.In a further embodiment of the invention is therefore provided that the inner support tube from above into the Adjustment nut is screwed in and the support tube with an external thread at its lower end is provided.

Von Vorteil ist es, wenn das Innengewinde der Verstellmutter länger als das Außengewinde des inneren Abstützrohres ist.It is advantageous if the internal thread of the adjusting nut longer than the external thread of the inner Support tube is.

Damit bietet sich in sehr vorteilhafter Weise die Möglichkeit, in das gleiche Bauteil die Verstellmutter von unten her eine Einstellschraube einzuschrauben.This offers the possibility in a very advantageous manner the adjusting nut in the same component screw in an adjusting screw from below.

Die Einstellschraube kann mit einer radialen Durchgangsbohrung versehen sein, so daß in diese Bohrung ebenfalls der bereits beschriebene Steckbolzen zur Arretierung der Abstützung später eingreifen kann.The adjusting screw can have a radial through hole be provided so that in this hole also the socket pin already described Locking the support can intervene later.

Die Einstellschraube läßt sich so verstellen, daß sich die Durchgangsbohrung der Einstellschraube mit dem Langloch der Verstellmutter sowie einer der beiden Durchgangsbohrungen des äußeren Abstützrohres deckt und somit der Steckbolzen durch alle drei Bohrungen gleichzeitig gesteckt, die Arretierung der Abstützung nun gewährleistet.The adjusting screw can be adjusted so that the through hole of the adjusting screw with the Elongated hole of the adjusting nut and one of the two Through holes of the outer support tube covers and thus the socket pin through all three holes inserted at the same time, the locking of the support now guaranteed.

Die Durchgangsbohrung am oberen Ende des äußeren Abstützrohres dient der Arretierung im Arbeitszustand, d.h., wenn das innere Abstützrohr einschließlich der mit ihm verschraubten Verstellmutter und Einstellschraube ausgefahren ist und der Kran steht. Die Durchgangsbohrung am unteren Ende des äußeren Abstützrohres dient der Arretierung im Transportzustand (eingefahrenes inneres Abstützrohr, also wenn der Kran zusammengeklappt ist).The through hole at the top of the outer support tube serves to lock in the working state, i.e. when the inner support tube including the screwed adjusting nut and adjusting screw is extended and the crane is stationary. The Through hole at the lower end of the outer support tube serves for locking in the transport state (Retracted inner support tube, i.e. when the crane is folded).

Selbstverständlich kann vorgesehen sein, daß die Einstellschraube konstruktiv so gestaltet ist, daß mit einem von außen wirkenden Element (z.B. Schlüssel), die Verstellung der Einstellschraube ausgeführt werden kann.Of course, it can be provided that the adjusting screw is designed so that with an external element (e.g. key), the adjustment of the adjusting screw can be carried out can.

Außerdem kann vorgesehen sein, daß die eingestellte Position der Einstellschraube in der Verstellmutter eine zusätzliche Fixierung erfährt. Das kann beispielsweise durch eine von außen die Verstellmutter durchdringende Schraube sein.It can also be provided that the set Position of the adjusting screw in the adjusting nut undergoes an additional fixation. For example by an adjusting nut from the outside penetrating screw.

Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnungen beschrieben.The following is an embodiment of the invention described with reference to the drawings.

Es zeigt:

Fig. 1
Die Anordnung der erfindungsgemäßen Vorrichtung im technischen System eines Leichtkranes
Fig. 2
ein Schnitt entlang der Linie I-I gemäß der Fig. 1
Fig. 3
eine Komplettdarstellung der erfindungsgemäßen Abstützung.
It shows:
Fig. 1
The arrangement of the device according to the invention in the technical system of a light crane
Fig. 2
a section along the line II of FIG. 1st
Fig. 3
a complete representation of the support according to the invention.

Der in Fig. 1 dargestellte Leichtkran besteht aus den Hauptbauteilen Grundgestell 1, welches als Schweißkonstruktion aus Stahlprofilen besteht, mit einer lenkbaren Anhängerzugvorrichtung versehen und mittels Rädern fahrbar ist, einer auf dem Grundgestell 1 befestigten, vertikalen Säule 2 und einem schwenkbaren Ausleger 3, mit einer in Längsrichtung verschiebbaren, elektromotorisch betriebenen Laufkatze 3, zur Aufnahme eines Kranhakens.The light crane shown in Fig. 1 consists of the Main components of base frame 1, which is a welded construction consists of steel profiles, with a steerable Trailer towing device provided and by means of wheels is mobile, one attached to the base frame 1, vertical column 2 and a swiveling boom 3, with a longitudinally displaceable, electric motor operated trolley 3, to accommodate a Crane hook.

Wie in der Fig. 1 dargestellt ist, ist die Säule 2 mit dem Grundgestell 1 durch eine Kombination, bestehend aus einer in ihrer Längsrichtung verstellbaren Abstützung 4 und einem motorisch angetriebenen hydraulischen Arbeitszylinder 5 verbunden.As shown in Fig. 1, the column 2 is with the base frame 1 by a combination from a support adjustable in its longitudinal direction 4 and a motor-driven hydraulic Working cylinder 5 connected.

Die Abstützung 4 und der Arbeitszylinder 5 sind als Kombination wie in Fig. 2 dargestellt, in gleicher Achse parallel in gemeinsamer Lagerung gelenkig durch je einen Bolzen 6 an der Säule 2 und an dem Grundgestell 1 befestigt. The support 4 and the working cylinder 5 are as Combination as shown in Fig. 2, in the same Axle articulated parallel in joint storage one bolt 6 each on the column 2 and on the base frame 1 attached.

Durch Betätigen des Arbeitszylinders 5 wird der Kran beim Ausfahren des Arbeitszylinders 5 in Arbeitsstellung und beim Einfahren des Arbeitszylinders 5 in Transportstellung bewegt.By actuating the working cylinder 5, the crane when extending the working cylinder 5 in the working position and when retracting the working cylinder 5 in Transport position moved.

Die parallel angeordnete Abstützung 4 erfüllt zwei Funktionen. Zum einen dient sie sowohl in Arbeits- als auch in der Transportstellung der Stabilisierung und Befestigung der Bauteile Säule 2 mit Ausleger 3 und dem Grundgestell 1 des Leichtkranes.The parallel support 4 fulfills two Functions. On the one hand, it serves both in work and also in the transport position of the stabilization and Attachment of the components pillar 2 with bracket 3 and the base frame 1 of the light crane.

Zum anderen dient die Abstützung 4 der genauen Ausrichtung der Bauteile des Kranes unter Einhaltung der erforderlichen Toleranzen zwischen Ausleger 3 und Grundgestell 1 bzw. der Säule 2 zum Grundgestell 1.On the other hand, the support 4 is used for precise alignment the components of the crane in compliance with the required tolerances between boom 3 and Base frame 1 or column 2 to base frame 1.

Die Abstützung 4 ist, wie aus Fig. 3 erkennbar, zweiteilig, bestehend aus einem äußeren Abstützrohr 7 und einem inneren, in diesem geführten Abstützrohr 8, in ihrer Längsrichtung verschiebbar ausgebildet, um den Bewegungen des Arbeitszylinders 5 folgen zu können.The support 4 is, as can be seen from FIG. 3, in two parts, consisting of an outer support tube 7 and an inner, in this guided support tube 8, in its longitudinal direction slidable to the To be able to follow movements of the working cylinder 5.

Das aus Profilstahl mit viereckigem Querschnitt gefertigte äußere Abstützrohr 7 ist am unteren Ende mittels des Bolzens 6 gelenkig am Grundgestell 1 befestigt.The one made from square section steel outer support tube 7 is at the lower end by means of the bolt 6 articulated to the base frame 1.

Am oberen Ende ist das äußere Abstützrohr 7 mit einem Führungsstück 9 welches in Achsrichtung eine Bohrung zur Aufnahme des inneren Abstützrohres 8 aufweist, verschlossen. At the upper end is the outer support tube 7 with a Guide piece 9 which has a bore in the axial direction for receiving the inner support tube 8, locked.

Zur Verbesserung der Gleitfähigkeit des inneren Abstützrohres 8 im äußeren Abstützrohr 7 kann in das Führungsstück 9 noch eine beispielsweise aus Kunststoff gefertigte Buchse 10 eingelassen sein.To improve the sliding ability of the inner support tube 8 in the outer support tube 7 can in the Guide piece 9, for example made of plastic manufactured socket 10 may be inserted.

Das Führungsstück 9 kann in das äußere Abstützrohr zweckmäßigerweise eingeschweißt sein.The guide piece 9 can be in the outer support tube expediently be welded in.

Das aus einem Rohrprofil bestehende innere Abstützrohr 8 ist am unteren Ende mit einem Außengewinde und an seinem oberen Ende mit einer Durchgangsbohrung versehen. Mittels dieser Bohrung erfolgt die Befestigung an der Säule 2 durch den Verbindungsbolzen 6.The inner support tube consisting of a tubular profile 8 is at the lower end with an external thread and on provide a through hole at its upper end. The attachment is made by means of this hole the column 2 through the connecting bolt 6.

Das am unteren Ende des inneren Abstützrohres 8 befindliche Gewinde wird mit einer Verstellmutter 11 verschraubt.The one located at the lower end of the inner support tube 8 Thread is adjusted with an adjusting nut 11 screwed.

In die Verstellmutter 11 ist deshalb in Längsrichtung eine durchgehende Gewindebohrung gearbeitet.In the adjusting nut 11 is therefore in the longitudinal direction a continuous threaded hole worked.

Die Gewindebohrung dient zum einen, wie oben bereits erwähnt, zur Aufnahme des inneren Abstützrohres 8 am oberen Ende der Verstellmutter 11.The threaded hole serves on the one hand, as already above mentioned, for receiving the inner support tube 8 on upper end of the adjusting nut 11.

Zum anderen wird in die Gewindebohrung am unteren Ende der Verstellmutter 11 eine Einstellschraube 12 geschraubt. The other is in the threaded hole at the bottom the adjusting nut 11 is screwed an adjusting screw 12.

Quer zu ihrer Längsachse ist die Verstellmutter 11 außerdem mit einem durchgehenden Langloch 13 zur Aufnahme eines Steckbolzens 14 versehen.The adjusting nut 11 is transverse to its longitudinal axis also with a continuous slot 13 for receiving a plug pin 14 provided.

Die Verstellmutter 11 hat einen viereckigen, dem Innenmaß des äußeren Abstützrohres 7 angepaßten Querschnitt, um beim Einschrauben des Abstützrohres 8 sowie beim Verstellen der Abstützung 4 sich nicht verdrehen zu können. Damit wird gewährleistet, daß eine radiale Durchgangsbohrung 15, die in der Einstellschraube 12 vorhanden ist, sowie an beiden Enden des äußeren Abstützrohres 7 ebenfalls vorhandene durchgehende radiale Bohrung 16, sowie das Langloch 13 der Verstellmutter 11 sich deckend übereinanderliegen und damit der Steckbolzen 14 die Abstützung 4 arretiert.The adjusting nut 11 has a square, the inner dimension of the outer support tube 7 adapted cross section, to screw in the support tube 8 and do not twist when adjusting the support 4 to be able to. This ensures that a radial through hole 15 in the adjusting screw 12 is present, and at both ends of the outer support tube 7 also existing continuous radial bore 16, and the slot 13 of the Adjustment nut 11 are superimposed and so that the plug pin 14 locks the support 4.

Mit einer nicht in der Zeichnung dargestellten Madenschraube, die die Verstellmutter 11 von außen durchdringt, kann außerdem die in der Verstellmutter 11 eingeschraubte Einstellschraube 12 in ihrer Lage halten.With a grub screw not shown in the drawing, which penetrates the adjusting nut 11 from the outside, can also in the adjusting nut 11th Hold the screw 12 in place.

Zum Verstellen der Einstellschraube dienen in deren untere Stirnseite zwei eingebrachte, ebenfalls nicht in der Zeichnung dargestellte, Bohrungen, in die ein dazu passend angefertigter Schraubschlüssel mit zwei Stiften eingeführt werden kann.To adjust the adjusting screw serve in their lower front two introduced, also not shown in the drawing, holes in the one matching wrench with two Pins can be introduced.

Außerdem sind auf der Oberfläche des äußeren Abstützrohres, wie in Fig. 1 und Fig. 3 sichtbar, Verstärkungsbleche 17 um die Bohrungen 16 herum angeschweißt. In addition, on the surface of the outer support tube, as can be seen in FIGS. 1 and 3, reinforcement plates 17 welded around the bores 16.

Die Bohrungen unterliegen somit weniger Verschleißerscheinungen bei der Arretierung mittels Steckbolzen 14.The holes are therefore less subject to wear when locking with locking pins 14.

Die erfindungsgemäße Vorrichtung arbeitet wie folgt:The device according to the invention works as follows:

Nach erfolgter Montage des Leichtbaukranes wird noch im Transportzustand, also noch im zusammengeklappten Zustand des Kranes, wo das innere Abstützrohr 8 noch eingefahren ist, durch Verdrehen der Einstellschraube 12 mittels des speziellen, oben erwähnten Schlüssels, dessen Stifte in die Bohrungen der Einstellschraube 12 eingeführt werden, die waagerechte Stellung der Säule 2 zum Grundgestell 1 eingestellt. Dazu wird die Einstellschraube 12 so lange nachgestellt, bis deren Bohrung 15 in den Bereich des Langlochs 13 der Verstellmutter 11 gerät.After the assembly of the lightweight crane is completed in the transport state, i.e. still folded Condition of the crane, where the inner support tube 8 still is retracted by turning the adjusting screw 12 by means of the special key mentioned above, whose pins in the holes of the adjusting screw 12th be introduced, the horizontal position of the column 2 set to base frame 1. For this, the adjusting screw 12 adjusted until its hole 15 in the area of the elongated hole 13 of the adjusting nut 11 devices.

Nach erfolgter Einstellung wird die Einstellschraube 12 mittels einer, in die Verstellmutter 5 eingeschraubten Madenschraube 9 fixiert und die Arretierung mit dem Steckbolzen 14, der zur besseren Handhabung mit einem Griff versehen sein kann, vorgenommen.After adjustment, the adjusting screw 12 by means of a screwed into the adjusting nut 5 Set screw 9 fixed and the lock with the socket pin 14, which for better handling can be provided with a handle.

Durch die im äußeren Abstützrohr 7 am oberen und unteren Ende befindlichen durchgehenden Querbohrungen 16 kann mittels des Steckbolzens 14 die Befestigung und Arretierung jeweils in den beiden Endlagen, d.h. in der Arbeitsstellung (senkrechte Stellung der Säule 2 mit dem Ausleger 3) bzw. der Transportstellung (waagerechte Stellung der Säule 2 mit abgeklapptem Ausleger 3) erfolgen.By in the outer support tube 7 on the upper and lower Through transverse bores 16 can by means of the plug pin 14, the attachment and Locking in each of the two end positions, i.e. in the working position (vertical position of the column 2 with the boom 3) or the transport position (horizontal position of column 2 with folded down Boom 3).

Dadurch wird gewährleistet, daß beim beliebigen Bewegen der Säule 2 mit Ausleger 3 von der Transport- in die Arbeitsstellung die erforderliche genaue Senkrechtstellung der Säule 2 mit Ausleger 3 zum Grundgestell 1 in optimaler Weise garantiert ist.This ensures that when you move the column 2 with boom 3 from the transport in the working position the required exact vertical position the column 2 with boom 3 to the base frame 1 is guaranteed in an optimal way.

Mit der erfindungsgemäßen Vorrichtung ist es außerdem möglich, daß nach teilweisem Lösen des oberen Verbindungsbolzens 6 zwischen Säule 2 und innerem Abstützrohr 8 ein Verdrehen des inneren Abstützrohres 8 vorgenommen werden kann, wodurch die erforderliche Einstellung der genau senkrechten Lage der Säule 2 in sehr vorteilhafter Weise erreicht wird.It is also with the device according to the invention possible that after partial loosening of the upper connecting bolt 6 between column 2 and inner support tube 8 a rotation of the inner support tube 8 is carried out can be, making the required setting the exact vertical position of the column 2 in is achieved very advantageously.

Dabei erfolgt ein Heraus- oder Hineinschrauben des inneren Abstützrohres 8 in das Gewinde der Verstellmutter 11. Die damit erreichbare Längenveränderung des inneren Abstützrohres 8 ermöglicht die Ausrichtung des Leichtkranes, was auch sehr wirkungsvoll dann vollzogen werden kann, wenn im Laufe des Betriebes des Leichtkranes durch Verschleiß hervorgerufene Abweichungen von der senkrechten Stellung der Säule 2 mit Ausleger 3 zum Grundgestell 1 korrigiert werden müssen.The screws are unscrewed or screwed in inner support tube 8 in the thread of the adjusting nut 11. The change in length of the inner support tube 8 allows the alignment of Light cranes, which was also carried out very effectively can be, if in the course of the operation of the Light crane deviations caused by wear from the vertical position of column 2 with Boom 3 to the base frame 1 must be corrected.

Nach erfolgter Längenänderung des inneren Abstützrohres 8 erfolgt die Befestigung an der Säule 2 mittels des Verbindungsbolzens 6. After changing the length of the inner support tube 8 is attached to the column 2 by means of the connecting bolt 6.

Die Einzelteile der Abstützung 4 können kostengünstig aus Baustahl gefertigt sein, die anschließend eine Oberflächenbehandlung durch galvanisches Verzinken erfahren können.The individual parts of the support 4 can be inexpensive be made of structural steel, which is then a Surface treatment by galvanizing can experience.

Mit der erfindungsgemäßen Vorrichtung kann schnell, einfach und sicher das Aufstellen des Leichtkranes erfolgen und darüber hinaus eine Feineinstellung der Lage des Kranes auf eine Genauigkeit von ca. 5 mm bis 10 mm erreicht werden.With the device according to the invention, easy and safe to set up the light crane and also fine-tune the Position of the crane to an accuracy of approx. 5 mm to 10 mm can be achieved.

Claims (10)

  1. Device for erecting and aligning a light crane consisting of a base frame (1), a vertical column (2) supported by the base frame (1), a jib (3) received by the column (2) and a hydraulically operated working cylinder (5), the working cylinder (5) being fitted both to the column (2) and to the base frame (1) of the light crane, characterised in that a longitudinally adjustable support (4) which is arranged parallel to the working cylinder (5) and can be adapted to the lifting height of the working cylinder (5) is fitted both to the column and to the base frame (1) of the light crane in combination with the working cylinder (5).
  2. Device according to claim 1, characterised in that the working cylinder (5) combined with the support (4) is hinged on to both the column (2) and the base frame (1) of the light crane by means of respective connecting bolts (6).
  3. Device according to claims 1 and 2, characterised in that the support (4) consists of an outer supporting tube and an inner supporting tube (8) guided within the latter.
  4. Device according to claim 3, characterised in that the outer supporting tube (7) is provided at both ends with respective radial through bores (16) for receiving a cotter-pin bolt (14).
  5. Device according to claims 3 and 4, characterised in that the upper end face of the outer supporting tube (7) is closed by means of an inner guide piece (9).
  6. Device according to claims 3 and 4, characterised in that an adjusting nut (11) provided axially with an internal thread and radially with an elongated through hole (13) for receiving the cotter-pin bolt is guided in the interior of the outer supporting tube (7).
  7. Device according to claim 3, characterised in that the inner supporting tube (8) is provided at its lower end with an external thread which can be screwed from above into the internal thread of the adjusting nut (11).
  8. Device according to claim 7, characterised in that the internal thread of the adjusting nut (11) is longer than the external thread of the inner supporting tube (8).
  9. Device according to claims 6 and 7, characterised in that an adjusting screw (12) with a radial through bore (15) for receiving the cotter-pin bolt (14) is screwed from below into the internal thread of the adjusting nut (11).
  10. Device according to claims 4, 6 and 9, characterised in that the adjusting screw (12) can be adjusted in such a manner that the through bore (15) of the adjusting screw (12) coincides with the elongated hole (13) of the adjusting nut (11) and one of the through bores (16) of the outer supporting tube (7) for receiving the cotter-pin bolt (14).
EP95103522A 1994-05-02 1995-03-11 Device for erecting and aligning of a self-erecting crane Expired - Lifetime EP0685422B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9407282U DE9407282U1 (en) 1994-05-02 1994-05-02 Device for erecting and aligning a light crane
DE9407282U 1994-05-02

Publications (2)

Publication Number Publication Date
EP0685422A1 EP0685422A1 (en) 1995-12-06
EP0685422B1 true EP0685422B1 (en) 1999-08-25

Family

ID=6908127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103522A Expired - Lifetime EP0685422B1 (en) 1994-05-02 1995-03-11 Device for erecting and aligning of a self-erecting crane

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EP (1) EP0685422B1 (en)
AT (1) ATE183719T1 (en)
DE (2) DE9407282U1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1556356B2 (en) * 1965-12-06 1971-10-14 Liebherr, Hans, E h Dr Ing , 7950 Biberach ROAD DRIVING CRANE
DD224012A1 (en) * 1984-04-23 1985-06-26 Schwermasch Kirow Veb K WIPPING FOR BOOM CRANES, PARTICULARLY WITH TELESCOPIC PULLERS
DE8904394U1 (en) * 1989-04-07 1989-06-08 Bauer Spezialtiefbau GmbH, 8898 Schrobenhausen Crane/drilling rig trolley
FR2665429B1 (en) * 1990-07-31 1992-10-02 Cadillon Sa AUTOMATED MOUNT CRANE, WITH LATERAL FOLDABLE BOOM.
FR2682096B1 (en) * 1991-10-02 1993-12-03 Potain AUTOMATICALLY FOLDABLE TOWER CRANE.

Also Published As

Publication number Publication date
ATE183719T1 (en) 1999-09-15
EP0685422A1 (en) 1995-12-06
DE59506668D1 (en) 1999-09-30
DE9407282U1 (en) 1994-07-14

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