EP3868698B1 - Method and lifting tool for moving a component having a projecting support - Google Patents

Method and lifting tool for moving a component having a projecting support Download PDF

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Publication number
EP3868698B1
EP3868698B1 EP21154662.7A EP21154662A EP3868698B1 EP 3868698 B1 EP3868698 B1 EP 3868698B1 EP 21154662 A EP21154662 A EP 21154662A EP 3868698 B1 EP3868698 B1 EP 3868698B1
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EP
European Patent Office
Prior art keywords
radially
clamping jaws
support
region
lifting tool
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EP21154662.7A
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German (de)
French (fr)
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EP3868698A1 (en
Inventor
Manuel Jung
Thomas Buechelmaier
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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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
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof

Definitions

  • the invention relates to a method for grasping and moving in a lifting direction a component having a protruding socket by means of a lifting tool, the socket being grasped by the lifting tool at an undercut that runs completely or partially radially around and into which several gripping elements of the lifting tool engage to a lifting tool having a plurality of gripping elements for gripping and moving in a lifting direction a component having a protruding nozzle according to the method.
  • Such lifting tools are used in particular for the assembly and disassembly of components for the oil supply.
  • That DE 40 13 228 C1 discloses a method and a lifting tool according to the preamble of claims 1 and 2, respectively.
  • the object of the invention is to provide a method and a lifting tool of the type mentioned above, the method being easy to assemble and disassemble the component on a unit and the lifting tool has a simple and easy-to-handle structure.
  • the lifting tool has a cylindrical carrier, one first end area of which can be grasped manually and a gripping arrangement for grasping the nozzle of the component is arranged on the other second end area, with a sleeve on the carrier the gripping arrangement is arranged to be axially displaceable between a release position and a gripping position, which has a cup-like extension at one end, with the cup-like extension being located outside of two or more clamping jaws in the release position, which arrange the support in a ring-like manner relative to one another on the second end region of the support enclose and are movably guided on the carrier between a radially maximum position and a radially minimum position and are spring-loaded into their radially maximum position, the clamping jaws having a second end region of the carrier Gripping area protrude axially and have radially inwardly directed projections on the gripping area, which are located radially outside of the socket in the radially maximum
  • a cylindrical carrier has a manually graspable first end area and a second end area, with a gripping arrangement being arranged on the second end area, with a sleeve of the gripping arrangement arranged to be displaceable on the carrier, which with a guide area between a release position and a gripping position, and which has a cup-like extension at one end, wherein in the release position the cup-like extension is located outside of two or more clamping jaws, which arrange the support in a ring-like manner relative to one another on the second end area of the support and enclose the carrier and which are movably guided on the carrier between a radially maximum position and a radially minimum position and are spring-loaded into their radially maximum position, the clamping jaws having a gripping area over the second end region of the carrier protrude axially and have radially inwardly directed projections on the gripping area and wherein the cup-like extension is pushed axially onto
  • the method according to the invention and the design according to the invention allow the lifting tool, which consists of few and simply designed components, to be simply placed on the lifting tool and grip the connection piece of the component with its clamping jaws located in the radially maximum position. Then only the sleeve moves from its release position to its gripping position manually shifted, whereby the cup-like extension is slipped over the outer contour of the clamping jaws and the clamping jaws are moved into their radially minimum position. The radially inwardly directed projections of the clamping jaws engage in the undercut of the socket and connect it with the lifting tool in a form-fitting manner. The component can now be moved manually together with the lifting tool into an installation position or out of an installation position on a unit.
  • the clamping jaws gradually move radially inward when the pot-like extension of the sleeve is slipped over the clamping jaws.
  • the sleeve can also be locked in its release position.
  • the lifting tool shown has a tubular carrier 1 with a cylindrical outer contour.
  • the carrier 1 has a manually detectable first end region 2 for an operator to grasp.
  • a gripping arrangement 4 for gripping and holding a socket 5 of a component is arranged on the opposite second end region 3 of the carrier 1, which is gripped by means of the lifting tool and moved to a mounting position on a unit (not shown), such as an oil pump, or out of the mounting position shall be.
  • a sleeve 6 of the gripping arrangement 4 On the cylindrical outer contour of the carrier 1 is a sleeve 6 of the gripping arrangement 4 with a guide area 35 surrounding the sleeve 6 between a release position closer to the first end area 2 and a release position in figure 1 shown, the second end portion 3 closer detection position out.
  • the sleeve 6 is radially enlarged to form a pot-like extension 7 adjoining the guide region 35 .
  • the radially circumferential outer contour of the clamping jaws 9, 9' tapers at the end facing the first end region 2 of the carrier 1 as a cone 12, with the outer contour of the clamping jaws 9, 9' in their radially minimum position corresponding to the inner contour of the cup-like extension 7 , so that the clamping jaws 9, 9 'are acted upon by the pot-like extension 7 of the sleeve 6 in their detection position in their radially minimum position.
  • the jaws 9, 9' are moved diametrically away from each other radially outwards into their radially maximum position in which the outer contour of the jaws 9, 9' then a has stadium-like peripheral contour. This takes place in the release position of the sleeve 6, in which the pot-like extension 7 is located axially outside the area of the clamping jaws 9, 9'.
  • the clamping jaw 9 has threaded bores 14 at its ends facing the free ends of the clamping jaw 9', which are opposite stop bores 15 formed coaxially in the clamping jaw 9'.
  • the stop bores 15 initially have the same diameter as the thread of the threaded bores 14 in order to merge into a step 16 of larger diameter in their end region facing away from the clamping jaw 9 .
  • Stop screws 17 are passed through the stop bores 15 and are screwed into the threaded bores 14 with their threaded shank.
  • the inner contour of the clamping jaws 9, 9' is designed in steps, with the part closer to the second end area 3 of the carrier 1 forming the larger step 22 and the part closer to the first end area 2 forming the smaller step.
  • the clamping jaws 9, 9' which are in their radially maximum position, are placed with their large step 22 of the inner contour on the socket 5 until the radial transition from the large step to the small step of the inner contour of the clamping jaws 9 , 9 'on the end face 23 of the socket 5 comes to rest.
  • projections 24 directed radially inwards are located radially opposite an undercut 25 formed radially circumferentially on the radially encircling contour of the connecting piece 5 .
  • the cup-like extension 7 of the sleeve 6 is slipped over the clamping jaws 9, 9' and the clamping jaws 9, 9' are thereby shifted from their radially maximum position to their radially minimum position moved radially inward.
  • the lugs 24 engage in the undercut 25 of the socket 5 and grip the socket 5.
  • the component having the socket 5 can now be moved away from a unit in a lifting direction 26 or counter to the lifting direction 26 towards the unit by means of the lifting tool.
  • the carrier 1 has a radially projecting guide projection 27 which projects into a radially continuous guide groove 28 in the guide area 35 of the sleeve 5 .
  • the guide groove 28 has a central region 29 extending in the direction of longitudinal extent of the carrier 1, at the end of which is further away from the clamping jaws 9, 9' a first transverse region 30 extending transversely to the longitudinal extent of the carrier 1 and at its second end closer to the clamping jaws 9, 9' a cross to Longitudinal extent of the carrier 1 extending second transverse region 31 adjoins.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Erfassen und Bewegen in eine Heberichtung einer einen hervorstehenden Stutzen aufweisenden Komponente mittels eines Hebewerkzeugs, wobei der Stutzen von dem Hebewerkzeug an einem einen ganz oder teilweise radial umlaufenden Hinterschnitt erfasst wird, in den mehrere Greifelemente des Hebewerkzeugs eingreifen sowie auf ein Hebewerkzeug mit mehreren Greifelementen zum Erfassen und Bewegen in eine Heberichtung einer einen hervorstehenden Stutzen aufweisenden Komponente nach dem Verfahren.The invention relates to a method for grasping and moving in a lifting direction a component having a protruding socket by means of a lifting tool, the socket being grasped by the lifting tool at an undercut that runs completely or partially radially around and into which several gripping elements of the lifting tool engage to a lifting tool having a plurality of gripping elements for gripping and moving in a lifting direction a component having a protruding nozzle according to the method.

Derartige Hebewerkzeuge werden insbesondere zur Montage und Demontage von Komponenten für die Ölversorgung benutzt.Such lifting tools are used in particular for the assembly and disassembly of components for the oil supply.

Das DE 40 13 228 C1 offenbart ein Verfahren bzw. ein Hebewerkzeug nach dem Oberbegriff des Anspruchs 1 bzw. 2.That DE 40 13 228 C1 discloses a method and a lifting tool according to the preamble of claims 1 and 2, respectively.

Aufgabe der Erfindung ist es ein Verfahren sowie ein Hebewerkzeug der eingangs genannten Art zu schaffen, wobei durch das Verfahren die Komponente einfach an ein Aggregat montierbar und demontierbar ist sowie das Hebewerkzeug einen einfachen und leicht handhabbaren Aufbau aufweist.The object of the invention is to provide a method and a lifting tool of the type mentioned above, the method being easy to assemble and disassemble the component on a unit and the lifting tool has a simple and easy-to-handle structure.

Diese Aufgabe wird in Bezug auf das Verfahren erfindungsgemäß dadurch gelöst, dass das Hebewerkzeug einen zylindrischen Träger aufweist, dessen einer erste Endbereich manuell erfassbar ist und an dessen anderer zweiter Endbereich eine Greifanordnung zum Erfassen des Stutzens der Komponente angeordnet ist, wobei auf dem Träger eine Hülse der Greifanordnung zwischen einer Löseposition und einer Erfassposition axial verschiebbar angeordnet ist, die an ihrem einen Ende eine topfartige Erweiterung aufweist, wobei in der Löseposition die topfartige Erweiterung außerhalb von zwei oder mehr Spannbacken befindet, die an dem zweiten Endbereich des Trägers den Träger ringartig zueinander angeordnet umschließen und an dem Träger zwischen einer radial maximalen Position und einer radial minimalen Position beweglich geführt und in ihre radial maximale Position federbeaufschlagt sind, wobei die Spannbacken über den zweiten Endbereich des Trägers mit einem Greifbereich axial herausragen und an dem Greifbereich radial nach innen gerichtete Ansätze aufweisen, die in der radial maximalen Position der Spannbacken sich radial außerhalb des Stutzens befinden und in der radial minimalen Position in den Hinterschnitt des Stutzens eingreifen, wobei die radial umlaufende Außenkontur der Spannbacken in ihrer radial maximalen Position größer ist, als die radial umlaufende Innenkontur der topfartigen Erweiterung der Hülse und durch Verschieben der Hülse in ihre Erfassposition die topfartige Erweiterung axial auf die Spannbacken aufgeschoben und die Spannbacken radial nach innen in ihre radial minimale Position bewegt werden.With regard to the method, this object is achieved according to the invention in that the lifting tool has a cylindrical carrier, one first end area of which can be grasped manually and a gripping arrangement for grasping the nozzle of the component is arranged on the other second end area, with a sleeve on the carrier the gripping arrangement is arranged to be axially displaceable between a release position and a gripping position, which has a cup-like extension at one end, with the cup-like extension being located outside of two or more clamping jaws in the release position, which arrange the support in a ring-like manner relative to one another on the second end region of the support enclose and are movably guided on the carrier between a radially maximum position and a radially minimum position and are spring-loaded into their radially maximum position, the clamping jaws having a second end region of the carrier Gripping area protrude axially and have radially inwardly directed projections on the gripping area, which are located radially outside of the socket in the radially maximum position of the clamping jaws and engage in the undercut of the socket in the radially minimum position, with the radially circumferential outer contour of the clamping jaws in their radially maximum position is greater than the radially encircling inner contour of the cup-like extension of the sleeve and by moving the sleeve into its detection position, the cup-like extension is pushed axially onto the clamping jaws and the clamping jaws are moved radially inward into their radially minimum position.

In Bezug auf das Hebewerkzeug wird diese Aufgabe erfindungsgemäß dadurch gelöst, dass ein zylindrischer Träger einen manuell erfassbaren ersten Endbereich und einen zweiter Endbereich aufweist, wobei an dem zweiten Endbereich eine Greifanordnung angeordnet ist, mit einer auf dem Träger verschiebbar angeordneten Hülse der Greifanordnung, die mit einem Führungsbereich zwischen einer Löseposition und einer Erfassposition axial verschiebbar ist und die an ihrem einen Ende eine topfartige Erweiterung aufweist, wobei in der Löseposition sich die topfartige Erweiterung außerhalb von zwei oder mehr Spannbacken befindet, die an dem zweiten Endbereich des Trägers den Träger ringartig zueinander angeordnet sind und den Träger umschließen und die an dem Träger zwischen einer radial maximalen Position und einer radial minimalen Position beweglich geführt und in ihre radial maximale Position federbeaufschlagt sind, wobei die Spannbacken über den zweiten Endbereich des Trägers mit einem Greifbereich axial herausragen und an dem Greifbereich radial nach innen gerichtete Ansätze aufweisen und wobei durch Verschieben der Hülse in ihre Erfassposition die topfartige Erweiterung axial auf die Spannbacken aufgeschoben und die Spannbacken radial nach innen in ihre radial minimale Position bewegbar sind.With regard to the lifting tool, this object is achieved according to the invention in that a cylindrical carrier has a manually graspable first end area and a second end area, with a gripping arrangement being arranged on the second end area, with a sleeve of the gripping arrangement arranged to be displaceable on the carrier, which with a guide area between a release position and a gripping position, and which has a cup-like extension at one end, wherein in the release position the cup-like extension is located outside of two or more clamping jaws, which arrange the support in a ring-like manner relative to one another on the second end area of the support and enclose the carrier and which are movably guided on the carrier between a radially maximum position and a radially minimum position and are spring-loaded into their radially maximum position, the clamping jaws having a gripping area over the second end region of the carrier protrude axially and have radially inwardly directed projections on the gripping area and wherein the cup-like extension is pushed axially onto the clamping jaws by moving the sleeve into its detection position and the clamping jaws can be moved radially inward into their radially minimum position.

Durch das erfindungsgemäße Verfahren sowie die erfindungsgemäße Ausbildung kann das aus wenigen und einfach ausgebildeten Bauteilen bestehende Hebewerkzeug einfach auf das Hebewerkzeugs aufgesetzt werden und mit seinen in der radial maximalen Position befindlichen Spannbacken den Stutzen der Komponente umgreifen. Anschließend wird nur die Hülse aus ihrer Löseposition in ihre Erfassposition manuell verschoben, wodurch die topfartige Erweiterung über die Außenkontur der Spannbacken gestülpt und dabei die Spannbacken in ihre radial minimale Position bewegt werden. Dabei greifen die radial nach innen gerichteten Ansätze der Spannbacken in den Hinterschnitt des Stutzens ein und verbinden diesen formschlüssig mit dem Hebewerkzeug. Nun kann die Komponente zusammen mit dem Hebewerkzeug in eine Einbaulage bzw. aus einer Einbaulage an ein Aggregat manuell bewegt werden.The method according to the invention and the design according to the invention allow the lifting tool, which consists of few and simply designed components, to be simply placed on the lifting tool and grip the connection piece of the component with its clamping jaws located in the radially maximum position. Then only the sleeve moves from its release position to its gripping position manually shifted, whereby the cup-like extension is slipped over the outer contour of the clamping jaws and the clamping jaws are moved into their radially minimum position. The radially inwardly directed projections of the clamping jaws engage in the undercut of the socket and connect it with the lifting tool in a form-fitting manner. The component can now be moved manually together with the lifting tool into an installation position or out of an installation position on a unit.

Es versteht sich, dass in kinematischer Umkehrung auch die Ansätze an dem Stutzen und der Hinterschnitt an den Spannbacken angeordnet sein können.It goes without saying that, in kinematic reversal, the projections on the connecting piece and the undercut on the clamping jaws can also be arranged.

Damit die Spannbacken bei in Löseposition befindlicher Hülse in ihrer radial maximale Position gehalten sind, können die Spannbacken in radial umlaufender Richtung federnd aneinander abgestützt sein.So that the clamping jaws are held in their radially maximum position when the sleeve is in the release position, the clamping jaws can be resiliently supported on one another in the radially circumferential direction.

Ist die radial umlaufende Außenkontur der Spannbacken an dem dem ersten Endbereich des Trägers zugewandten Ende sich verjüngend als Konus ausgebildet ist, so erfolgt ein nach und nach radial nach innen Bewegen der Spannbacken beim Überstülpen der topfartigen Erweiterung der Hülse über die Spannbacken.If the radially encircling outer contour of the clamping jaws tapers at the end facing the first end region of the carrier and is designed as a cone, the clamping jaws gradually move radially inward when the pot-like extension of the sleeve is slipped over the clamping jaws.

Beim Aufsetzen des Hebewerkzeugs auf den Stutzen wird zwangsläufig die korrekte Position zum Erfassen des Stutzens erreicht, wenn die Innenkontur der ringartig zueinander angeordneten Spannbacken stufenartig ausgebildet ist, wobei der dem Träger abgewandte Teil die größere Stufe und der dem Träger zugewandt Teil die kleinere Stufe bildet, die einen Anschlag bildet, an den der Stutzen mit seiner freien Stirnseite zur Anlage kommt.When the lifting tool is placed on the socket, the correct position for gripping the socket is inevitably reached if the inner contour of the clamping jaws arranged in a ring-like manner relative to one another is stepped, with the part facing away from the wearer forming the larger step and the part facing the wearer forming the smaller step. which forms a stop against which the nozzle comes to rest with its free end face.

Damit die Hülse in der Löseposition und/oder der Erfassposition nicht manuell gehalten werden muss, kann die Hülse in der Löseposition und/oder in der Erfassposition axial arretierbar sein, was zu einer Erleichterung der Montage und/oder Demontage der Komponente führt.So that the sleeve does not have to be held manually in the release position and/or the gripping position, the sleeve can be axially lockable in the release position and/or in the gripping position, which makes assembly and/or disassembly of the component easier.

Dazu kann in einfacher Ausbildung der auf dem Träger verschiebbar geführte Führungsbereich der Hülse eine radial durchgehende Führungsnut aufweisen, in die radial ein Führungsansatz des Trägers hineinragt und die einen sich in Längserstreckungsrichtung des Trägers erstreckenden Mittelbereich aufweist, an dessen den Spannbacken entfernteren erstem Ende sich ein erster Querbereich und an dessen den Spannbacken näheren zweitem Ende sich ein zweiter Querbereich anschließt, wobei die Querbereiche sich quer zur Längserstreckung des Trägers erstrecken.For this purpose, in a simple design, the guide area of the sleeve, which is slidably guided on the carrier, can have a radially continuous guide groove, into which a guide projection of the carrier projects radially and which has a central area extending in the longitudinal direction of the carrier, at the first end of which, which is remote from the clamping jaws, there is a first A second transverse region adjoins the transverse region and at the second end of which is closer to the clamping jaws, the transverse regions extending transversely to the longitudinal extension of the carrier.

Schließt sich dabei das sich an das dem Mittelbereich abgewandte Ende des zweiten Querbereichs ein Einrastbereich an, der sich in Längserstreckungsrichtung des Trägers erstreckt, so ist die Hülse zusätzlich in ihrer Löseposition arretierbar.If the end of the second transverse area facing away from the middle area is adjoined by a snap-in area that extends in the longitudinal direction of the carrier, the sleeve can also be locked in its release position.

Der Träger kann an seinem zweiten Endbereich einen radial nach außen sich erstreckenden, radial umlaufenden Flansch aufweisen, auf dem die den Träger umschließenden Spannbacken zwischen ihrer radial maximalen Position und ihrer radial minimalen Position radial beweglich geführt sind, wobei die Spannbacken an ihrer Innenkontur jeweils eine dem Flansch entsprechende, radial umlaufende Führungsnut aufweisen, in die der Flansch hineinragt.At its second end region, the carrier can have a radially outwardly extending, radially circumferential flange, on which the clamping jaws surrounding the carrier are guided so that they can move radially between their radially maximum position and their radially minimum position, with the clamping jaws on their inner contour each having a dem Flange corresponding, have radially circumferential guide groove into which the flange protrudes.

Zum sicheren Erfassen und Bewegen des Hebewerkzeugs kann der Träger an seinem den Spannbacken abgewandten Endbereich eine Handhabe aufweisen.For safe gripping and moving of the lifting tool, the carrier can have a handle on its end region facing away from the clamping jaws.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen:

Figur 1
einen Längsschnitt entlang der Linie I-I in Figur 2 eines Hebewerkzeugs
Figur 2
einen Querschnitt entlang der Linie II-II in Figur 1 des Hebewerkzeugs nach Figur 1
Figur 3
eine perspektivische Darstellung des Hebewerkzeugs nach Figur 1.
An embodiment of the invention is shown in the drawing and is described in more detail below. Show it:
figure 1
a longitudinal section along the line II in figure 2 a lifting tool
figure 2
a cross-section along the line II-II in figure 1 of the lifting tool figure 1
figure 3
a perspective view of the lifting tool figure 1 .

Das dargestellte Hebewerkzeug weist einen rohrartigen Träger 1 mit zylindrischer Außenkontur auf. Der Träger 1 besitzt zum Ergreifen durch eine Bedienperson einen manuell erfassbaren ersten Endbereich 2 auf. An dem dazu entgegengesetzten zweiten Endbereich 3 des Trägers 1 ist eine Greifanordnung 4 zum Ergreifen und Halten eines Stutzens 5 einer Komponente angeordnet, die mittels des Hebewerkzeugs erfasst und zu einer Montageposition an einem nicht dargestellten Aggregat wie z.B. einer Ölpumpe hin oder aus der Montageposition weg bewegt werden soll.The lifting tool shown has a tubular carrier 1 with a cylindrical outer contour. The carrier 1 has a manually detectable first end region 2 for an operator to grasp. A gripping arrangement 4 for gripping and holding a socket 5 of a component is arranged on the opposite second end region 3 of the carrier 1, which is gripped by means of the lifting tool and moved to a mounting position on a unit (not shown), such as an oil pump, or out of the mounting position shall be.

Auf der zylindrischen Außenkontur des Trägers 1 ist eine Hülse 6 der Greifanordnung 4 mit einem die Hülse 6 umschließenden Führungsbereich 35 zwischen einer dem ersten Endbereich 2 näheren Löseposition und einer in Figur 1 dargestellten, dem zweiten Endbereich 3 näheren Erfassposition verschiebbar geführt.On the cylindrical outer contour of the carrier 1 is a sleeve 6 of the gripping arrangement 4 with a guide area 35 surrounding the sleeve 6 between a release position closer to the first end area 2 and a release position in figure 1 shown, the second end portion 3 closer detection position out.

An ihrem dem zweiten Endbereich 3 zugewandten Ende ist anschließend an den Führungsbereich 35 die Hülse 6 zu einer topfartigen Erweiterung 7 radial vergrößert.At its end facing the second end region 3 , the sleeve 6 is radially enlarged to form a pot-like extension 7 adjoining the guide region 35 .

An seinem zweiten Endbereich 3 weist der Träger einen radial nach außen sich erstreckenden, radial umlaufenden Flansch 8 auf, auf dem zwei den Träger 1 umschließende gleiche Spannbacken 9, 9' zwischen einer radial maximalen Position und einer radial minimalen Position (Figur 1) radial beweglich geführt sind. Dazu weisen die Spannbacken 9, 9' an ihrer Innenkontur jeweils eine dem Flansch 8 entsprechende, radial umlaufende Führungsnut 10 auf, mit der die Spannbacken 9, 9' radial beweglich an dem Träger 1 geführt sind.At its second end region 3, the carrier has a radially outwardly extending, radially circumferential flange 8 on which two identical clamping jaws 9, 9' enclosing the carrier 1 can be positioned between a radially maximum position and a radially minimum position ( figure 1 ) are guided radially movable. For this purpose, the clamping jaws 9, 9' on their inner contour each have a radially circumferential guide groove 10 corresponding to the flange 8, with which the clamping jaws 9, 9' are guided on the carrier 1 in a radially movable manner.

Die radial umlaufende Außenkontur der Spannbacken 9, 9' ist an dem dem ersten Endbereich 2 des Trägers 1 zugewandten Ende sich verjüngend als Konus 12 ausgebildet, wobei die Außenkontur der Spannbacken 9, 9' in ihrer radial minimalen Position der Innenkontur der topfartigen Erweiterung 7 entspricht, so dass die Spannbacken 9, 9' von der topfartigen Erweiterung 7 der Hülse 6 in deren Erfassposition in ihre radial minimale Position beaufschlagt sind. Durch in Umfangsrichtung zwischen den Spannbacken 9, 9' angeordnete vorgespannte Schraubendruckfedern 19 sind die Spannbacken 9, 9' diametral voneinander weg radial nach außen in ihre radial maximale Position bewegt, in der die Außenkontur der Spannbacken 9, 9' dann eine stadionartige Umfangskontur aufweist. Dies erfolgt in der Löseposition der Hülse 6, in der sich die topfartige Erweiterung 7 axial außerhalb des Bereichs der Spannbacken 9, 9' befindet.The radially circumferential outer contour of the clamping jaws 9, 9' tapers at the end facing the first end region 2 of the carrier 1 as a cone 12, with the outer contour of the clamping jaws 9, 9' in their radially minimum position corresponding to the inner contour of the cup-like extension 7 , so that the clamping jaws 9, 9 'are acted upon by the pot-like extension 7 of the sleeve 6 in their detection position in their radially minimum position. By circumferentially between the jaws 9, 9 'arranged prestressed helical compression springs 19, the jaws 9, 9' are moved diametrically away from each other radially outwards into their radially maximum position in which the outer contour of the jaws 9, 9' then a has stadium-like peripheral contour. This takes place in the release position of the sleeve 6, in which the pot-like extension 7 is located axially outside the area of the clamping jaws 9, 9'.

Die Bewegung der Spannbacken 9, 9' radial voneinander weg in die radial maximale Position wird durch Anschläge begrenzt. Dazu weist die Spannbacke 9 an ihren den freien Enden der Spannbacke 9' zugewandten Enden Gewindebohrungen 14 auf, denen jeweils koaxial in der Spannbacke 9' ausgebildete Anschlagbohrungen 15 gegenüber liegen. Die Anschlagbohrungen 15 weisen zunächst den gleichen Durchmesser wie das Gewinde der Gewindebohrungen 14 auf um in ihrem der Spannbacke 9 abgewandten Endbereich in eine Stufe 16 größeren Durchmessers überzugehen. Durch die Anschlagbohrungen 15 sind Anschlagschrauben 17 hindurchgeführt, die mit ihrem Gewindeschaft in die Gewindebohrungen 14 eingeschraubt sind.The movement of the clamping jaws 9, 9' radially away from each other into the radially maximum position is limited by stops. For this purpose, the clamping jaw 9 has threaded bores 14 at its ends facing the free ends of the clamping jaw 9', which are opposite stop bores 15 formed coaxially in the clamping jaw 9'. The stop bores 15 initially have the same diameter as the thread of the threaded bores 14 in order to merge into a step 16 of larger diameter in their end region facing away from the clamping jaw 9 . Stop screws 17 are passed through the stop bores 15 and are screwed into the threaded bores 14 with their threaded shank.

In der radial minimalen Position der Spannbacken 9, 9' sind Schraubenköpfe 18 der Anschlagschrauben 17 in einem bestimmten Abstand zu dem Übergang des kleinen Durchmessers zum größeren Durchmesser der Anschlagbohrungen 15, während die Schraubenköpfe 18 der Anschlagschrauben 17 in der radial maximalen Position der Spannbacken 9, 9' an dem Übergang des kleinen Durchmessers zum größeren Durchmesser der Anschlagbohrungen 15 zu Anlage kommen.In the radially minimum position of the clamping jaws 9, 9', screw heads 18 of the stop screws 17 are at a certain distance from the transition from the small diameter to the larger diameter of the stop bores 15, while the screw heads 18 of the stop screws 17 are in the radially maximum position of the clamping jaws 9, 9' come to rest at the transition from the small diameter to the larger diameter of the stop bores 15.

Von den Trennungsbereichen der Spannbacken 9, 9' ausgehend weisen die Gewindebohrungen 14 und die Anschlagbohrungen 15 über eine bestimmte Länge einen stufenartig vergrößerten Durchmesser auf. In diese Bereiche stufenartig vergrößerter Durchmesser sind vorgespannte Schraubendruckfedern 19 angeordnet, die sich an den Übergängen von den Bereichen stufenartig vergrößerten Durchmessers zu den Gewindebohrungen 14 und zu den Anschlagbohrungen 15 abstützen und so die beiden Spannbacken 9, 9' immer voneinander weg kraftbeaufschlagen.Starting from the separation areas of the clamping jaws 9, 9', the threaded bores 14 and the stop bores 15 have a stepwise enlarged diameter over a certain length. Prestressed helical compression springs 19 are arranged in these areas of stepwise increased diameter, which are supported at the transitions from the areas of stepwise increased diameter to the threaded bores 14 and to the stop bores 15 and thus always force the two clamping jaws 9, 9' away from each other.

In der radial minimalen Position der Spannbacken 9, 9' weisen diese eine kreisrunde Umfangskontur auf. Zwischen den in der radial minimalen Position der Spannbacken 9, 9' einander gegenüberliegenden freien Enden der Spannbacken 9, 9' ist ein Spalt 20 vorhanden, in den sich axial erstreckende Abstandshalter 21 mit einer dem Abstand entsprechenden Dicke hineinragen, die an dem Flansch 8 des Trägers 1 angeordnet sind.In the radially minimum position of the clamping jaws 9, 9', these have a circular peripheral contour. Between the radially minimum position of the jaws 9, 9 'opposite free ends of the jaws 9, 9', a gap 20 is present, in the axially extending spacer 21 with a dem Protrude distance corresponding thickness, which are arranged on the flange 8 of the carrier 1.

Die Innenkontur der Spannbacken 9, 9' ist stufenartig ausgebildet, wobei der dem zweiten Endbereich 3 des Trägers 1 nähere Teil die größere Stufe 22 und der dem ersten Endbereich 2 nähere Teil die kleinere Stufe bildet.The inner contour of the clamping jaws 9, 9' is designed in steps, with the part closer to the second end area 3 of the carrier 1 forming the larger step 22 and the part closer to the first end area 2 forming the smaller step.

Beim Aufsetzen des Hebewerkzeugs auf den Stutzen 5 werden die in ihrer radial maximalen Position befindlichen Spannbacken 9, 9' mit ihrer großen Stufe 22 der Innenkontur auf den Stutzen 5 aufgesetzt, bis der radiale Übergang von der großen Stufe zur kleinen Stufe der Innenkontur der Spannbacken 9, 9' an der Stirnfläche 23 des Stutzens 5 zur Anlage kommt.When the lifting tool is placed on the socket 5, the clamping jaws 9, 9', which are in their radially maximum position, are placed with their large step 22 of the inner contour on the socket 5 until the radial transition from the large step to the small step of the inner contour of the clamping jaws 9 , 9 'on the end face 23 of the socket 5 comes to rest.

In dieser Position liegen an der Innenkontur der Spannbacken 9, 9' radial nach innen gerichtete Ansätze 24 einem an der radial umlaufenden Kontur des Stutzens 5 radial umlaufend ausgebildeten Hinterschnitt 25 radial gegenüber.In this position, on the inner contour of the clamping jaws 9 , 9 ′, projections 24 directed radially inwards are located radially opposite an undercut 25 formed radially circumferentially on the radially encircling contour of the connecting piece 5 .

Wird nun die sich in der Löseposition befindliche Hülse 6 manuell in ihre Erfassposition verschoben, wird die topfartige Erweiterung 7 der Hülse 6 über die Spannbacken 9, 9' gestülpt und dadurch die Spannbacken 9, 9' aus ihrer radial maximalen Position in ihre radial minimale Position radial nach innen bewegt. Dabei greifen die Ansätze 24 in den Hinterschnitt 25 des Stutzens 5 ein und ergreifen den Stutzen 5.If the sleeve 6 in the release position is manually shifted into its gripping position, the cup-like extension 7 of the sleeve 6 is slipped over the clamping jaws 9, 9' and the clamping jaws 9, 9' are thereby shifted from their radially maximum position to their radially minimum position moved radially inward. The lugs 24 engage in the undercut 25 of the socket 5 and grip the socket 5.

Nun kann mittels des Hebewerkzeugs die den Stutzen 5 aufweisende Komponente in eine Heberichtung 26 von einem Aggregat wegbewegt oder entgegen der Heberichtung 26 zu dem Aggregat hin bewegt werden.The component having the socket 5 can now be moved away from a unit in a lifting direction 26 or counter to the lifting direction 26 towards the unit by means of the lifting tool.

Der Träger 1 weist einen radial hervorstehenden Führungsansatz 27 auf, der in eine radial durchgehende Führungsnut 28 im Führungsbereich 35 der Hülse 5 ragt. Die Führungsnut 28 einen sich in Längserstreckungsrichtung des Trägers 1 sich erstreckenden Mittelbereich 29 auf, an dessen den Spannbacken 9, 9' entfernteren Ende ein sich quer zur Längserstreckung des Trägers 1 erstreckender erster Querbereich 30 und an dessen den Spannbacken 9, 9' näheren zweiten Ende ein sich quer zur Längserstreckung des Trägers 1 erstreckender zweiter Querbereich 31 anschließt. Durch Verdrehen der sich in der Löseposition oder der Erfassposition befindlichen Hülse 5 gelangt der Führungsansatz 27 in den ersten Querbereich 30 oder den zweiten Querbereich 31, so dass die Hülse 5 in der entsprechenden Position gehalten ist.The carrier 1 has a radially projecting guide projection 27 which projects into a radially continuous guide groove 28 in the guide area 35 of the sleeve 5 . The guide groove 28 has a central region 29 extending in the direction of longitudinal extent of the carrier 1, at the end of which is further away from the clamping jaws 9, 9' a first transverse region 30 extending transversely to the longitudinal extent of the carrier 1 and at its second end closer to the clamping jaws 9, 9' a cross to Longitudinal extent of the carrier 1 extending second transverse region 31 adjoins. By turning the sleeve 5, which is in the release position or the gripping position, the guide projection 27 reaches the first transverse area 30 or the second transverse area 31, so that the sleeve 5 is held in the corresponding position.

An das dem Mittelbereich 29 abgewandte Ende des zweiten Querbereichs 31 schließt sich ein kurzer sich parallel zum Mittelbereich 29 erstreckender Einrastbereich 33 an. Befindet sich der Führungsansatz 27 in dem Einrastbereich 32, so ist die Hülse 5 in dieser Position arretiert.A short snap-in area 33 extending parallel to the middle area 29 adjoins the end of the second transverse area 31 facing away from the middle area 29 . If the guide projection 27 is in the latching area 32, the sleeve 5 is locked in this position.

Zum besseren Ergreifen des Hebewerkzeugs ist außerhalb des von der Hülse 5 überdeckbaren Bereichs des Trägers 1 eine den Träger 1 umschließende ringförmige Handhabe 34 auf dem Träger 1 mittels Madenschauben 35 befestigt.For better gripping of the lifting tool, a ring-shaped handle 34 enclosing the carrier 1 is fastened to the carrier 1 by means of grub screws 35 outside of the region of the carrier 1 that can be covered by the sleeve 5 .

Bezuqszeichenreference sign

11
Trägercarrier
22
erster Endbereichfirst end area
33
zweiter Endbereichsecond end area
44
Greifanordnunggripping arrangement
55
StutzenSupport
66
Hülsesleeve
77
topfartige Erweiterungpot-like extension
88th
Flanschflange
99
Spannbackenclamping jaws
9'9'
Spannbackenclamping jaws
1010
Führungsnutguide groove
1212
Konuscone
1414
Gewindebohrungentapped holes
1515
Anschlagbohrungenstop holes
1616
StufeStep
1717
Anschlagschraubenstop screws
1818
Schraubenköpfescrew heads
1919
Schraubendruckfedernhelical compression springs
2020
Spaltgap
2121
Abstandshalterspacers
2222
größere Stufehigher level
2323
Stirnflächeface
2424
Ansätzeapproaches
2525
Hinterschnittundercut
2626
Heberichtunglifting direction
2727
Führungsansatzleadership approach
2828
Führungsnutguide groove
2929
Mittelbereichmidrange
3030
erster Querbereichfirst transverse area
3131
zweiter Querbereichsecond transverse area
3232
Einrastbereichsnap area
3333
Handhabehandle
3434
Madenschraubengrub screws
3535
Führungsbereichmanagement area

Claims (10)

  1. Method for grasping and moving in a lifting direction (26) a component having a protruding connecting piece (5) by means of a lifting tool, wherein the connecting piece (5) is grasped by the lifting tool at a fully or partially radially encircling undercut (25) into which multiple gripping elements of the lifting tool engage, wherein the lifting tool has a cylindrical support (1), a first end region (2) of which is able to be grasped manually and on the other, second end region (3) of which a gripping arrangement for grasping the connecting piece (5) of the component is arranged, wherein a sleeve (6) of the gripping arrangement is arranged on the support (1) so as to be axially displaceable between a release position and a grasping position, characterized in that said sleeve has a pot-like extension (7) at one end thereof, wherein, in the release position, the pot-like extension (7) is situated outside two or more clamping jaws (9, 9') which, at the second end region (3) of the support (1), surround the support (1) so as to be arranged in a ring-like manner in relation to one another and which are guided on the support (1) so as to be movable between a radially maximum position and a radially minimum position and which are spring-loaded in their radially maximum position, wherein the clamping jaws (9, 9') axially project beyond the second end region (3) of the support (1) with a gripping region and, on the gripping region, have radially inwardly directed projections (24) which, in the radially maximum position of the clamping jaws (9, 9'), are situated radially outside the connecting piece (5) and which, in the radially minimum position, engage into the undercut (25) of the connecting piece (5), wherein the radially encircling outer contour of the clamping jaws (9, 9'), in their radially maximum position, is larger than the radially encircling inner contour of the pot-like extension (7) of the sleeve (6), and, by way of displacement of the sleeve (6) into its grasping position, the pot-like extension (7) is pushed axially onto the clamping jaws (9, 9') and the clamping jaws (9, 9') are moved radially inwards into their radially minimum position.
  2. Lifting tool having multiple gripping elements for grasping and moving in a lifting direction (26) a component having a protruding connecting piece (5) using the method according to Claim 1, wherein a cylindrical support (1) has a manually graspable first end region (2) and a second end region (3), wherein, at the second end region (3), there is arranged a gripping arrangement with a sleeve (6) of the gripping arrangement, which sleeve is arranged displaceably on the support (1) and is axially displaceable, with a guide region, between a release position and a grasping position and has a pot-like extension (7) at one end thereof, wherein, in the release position, the pot-like extension (7) is situated outside two or more clamping jaws (9, 9') which, at the second end region (3) of the support (1), are arranged in a ring-like manner in relation to one another and surround the support (1) and which are guided on the support (1) so as to be movable between a radially maximum position and a radially minimum position and which are spring-loaded in their radially maximum position, wherein the clamping jaws (9, 9') axially project beyond the second end region (3) of the support (1) with a gripping region and, on the gripping region, have radially inwardly directed projections (24), and wherein, by way of displacement of the sleeve (6) into its grasping position, the pot-like extension (7) is pushed axially onto the clamping jaws (9, 9') and the clamping jaws (9, 9') are movable radially inwards into their radially minimum position.
  3. Lifting tool according to Claim 2, characterized in that the clamping jaws (9, 9') are supported against one another in a manner resilient in the radially encircling direction.
  4. Lifting tool according to either of Claims 2 and 3, characterized in that, at the end facing towards the first end region (2) of the support (1), the radially encircling outer contour of the clamping jaws (9, 9') is formed so as to narrow in the form of a cone (12).
  5. Lifting tool according to one of Claims 2 to 4, characterized in that the inner contour of the clamping jaws (9, 9') arranged in a ring-like manner in relation to one another is of stepped form, wherein the part facing away from the support (1) forms the larger step (22) and the part facing towards the support (1) forms the smaller step.
  6. Lifting tool according to one of Claims 2 to 5, characterized in that the sleeve (6) is able to be arrested axially in the release position and/or in the grasping position.
  7. Lifting tool according to Claim 6, characterized in that the guide region (35), guided displaceably on the support (1), of the sleeve (6) has a radially continuous guide groove (28) into which a guide projection (27) of the support (1) projects radially and which has a middle region (29) which extends in the direction of longitudinal extent of the support (1), a first transverse region (30) adjoining the first end, further away from the clamping jaws (9, 9'), and a second transverse region (31) adjoining the second end, closer to the clamping jaws (9, 9'), of said middle region, wherein the transverse regions (30, 31) extend transversely to the longitudinal extent of the support (1).
  8. Lifting tool according to Claim 7, characterized in that a latching-in region (32) extending in the direction of longitudinal extent of the support (1) adjoins that end of the second transverse region (31) which faces away from the middle region (29).
  9. Lifting tool according to one of the preceding claims, characterized in that, at its second end region (3), the support (1) has a radially outwardly extending, radially encircling flange (8) on which the clamping jaws (9, 9') surrounding the support (1) are guided so as to be radially movable between their radially maximum position and their radially minimum position, wherein the clamping jaws (9, 9') have on their inner contour in each case one radially encircling guide groove (10) which corresponds to the flange (8) and into which the flange (8) projects.
  10. Lifting tool according to one of the preceding claims, characterized in that, at its end region facing away from the clamping jaws (9, 9'), the support (1) has a handling means (33).
EP21154662.7A 2020-02-04 2021-02-02 Method and lifting tool for moving a component having a projecting support Active EP3868698B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020201341.1A DE102020201341A1 (en) 2020-02-04 2020-02-04 Method for grasping and moving in a lifting direction a component having a protruding socket by means of a lifting tool and a lifting tool with a plurality of gripping elements for grasping and moving in a lifting direction a component having a projecting socket

Publications (2)

Publication Number Publication Date
EP3868698A1 EP3868698A1 (en) 2021-08-25
EP3868698B1 true EP3868698B1 (en) 2022-12-21

Family

ID=74505026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21154662.7A Active EP3868698B1 (en) 2020-02-04 2021-02-02 Method and lifting tool for moving a component having a projecting support

Country Status (2)

Country Link
EP (1) EP3868698B1 (en)
DE (1) DE102020201341A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448817A (en) * 1944-11-11 1948-09-07 Reconstruction Finance Corp Fastening device
US2654135A (en) * 1951-06-25 1953-10-06 Adams Rite Mfg Company Releasable connection device
DE1922426U (en) 1965-05-22 1965-08-26 Saarbergwerke Ag EQUIPMENT SET FOR SPRAYING TWO DIFFERENT LIQUIDS FROM A PRESSURE VESSEL, ESPECIALLY IN UNDERGROUND OPERATIONS.
US3743342A (en) * 1971-10-05 1973-07-03 Gen Motors Corp Lifting clamp
DE4013228C1 (en) 1990-04-26 1991-06-27 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
GB2261650A (en) 1991-11-21 1993-05-26 Lanesfield Engineering Seals L Lifting pin
WO2019239413A2 (en) 2018-06-13 2019-12-19 Nvisol Object engagement apparatus

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DE102020201341A1 (en) 2021-08-05
EP3868698A1 (en) 2021-08-25

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