EP2132006B1 - Multi-part pin remover for removing a pin or stud from a hole of a component - Google Patents

Multi-part pin remover for removing a pin or stud from a hole of a component Download PDF

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Publication number
EP2132006B1
EP2132006B1 EP08717992A EP08717992A EP2132006B1 EP 2132006 B1 EP2132006 B1 EP 2132006B1 EP 08717992 A EP08717992 A EP 08717992A EP 08717992 A EP08717992 A EP 08717992A EP 2132006 B1 EP2132006 B1 EP 2132006B1
Authority
EP
European Patent Office
Prior art keywords
pin
component
holder
pull rod
remover
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.)
Not-in-force
Application number
EP08717992A
Other languages
German (de)
French (fr)
Other versions
EP2132006A1 (en
Inventor
Björn Bilstein
Peter Schröder
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP08717992A priority Critical patent/EP2132006B1/en
Publication of EP2132006A1 publication Critical patent/EP2132006A1/en
Application granted granted Critical
Publication of EP2132006B1 publication Critical patent/EP2132006B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/04—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53817—Valve stem pin or key and another member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y10T29/53857—Central screw, work-engagers around screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53909—Means comprising hand manipulatable tool

Definitions

  • the invention relates to a multi-part pin puller for withdrawing a pin or bolt from a hole of a component, comprising a threaded tie rod and a tie rod receiving holder, which is supported for releasing the pin from the component to the latter, wherein the pull rod with the to be solved pin connectable and connected in the state connected to the pin by rotating a screw supporting itself on the holder in the drawing direction.
  • Multi-part pin pullers for pulling out a pin or bolt from a hole of a component are well known, such as from DE 18 53 600 U and DE 20 2006 014 177 U1 , The latter includes the preamble of claim 1.
  • the pins are usually fixed in the component and are generally held by frictional engagement.
  • the pin is often sunk flush in the component.
  • the pin puller comprises a pull rod which can be screwed to the withdrawing pin and which can be supported on the holder and can be moved under the action of a force along its axial direction to pull the pin out of the component.
  • the holder of the pin puller is supported on the component, which thus forms the abutment for the force acting on the pull rod force.
  • pin to be pulled can be screwed to the pull rod, due to a non-axis-parallel arrangement of pin and pull rod and the threaded portions of one of the two components wear, so that if necessary, a pin to be solved is no longer removable from the component.
  • the object of the invention is therefore to provide a multi-part pen puller to be safely avoided by the damage to the component from which the pin or bolt to be pulled out.
  • the invention is based on the finding that when the holder has means for aligning the pin puller relative to the component, both wear on the parts of the pin and pull rod involved in the form-fitting and tilting of the pull rod relative to the axial direction of the pin can be reliably avoided , Due to the provided means, the pull rod is always moved concentrically to the axial axis of the pin or bolt along the pulling direction, so that wear on the component can be avoided by tilting. Likewise, the wear on the form-fitting components of the pin and the pin puller can be safely avoided because due to the predetermined fixed orientation and positioning of the pin puller relative to the pin at any time the positive locking can come about properly.
  • the holder has a hook-shaped projection as a means for aligning the pin puller.
  • the hook-shaped projection is matched to the groove depth, so that along this direction a displacement of the pin puller during the release of the pin can be safely avoided.
  • the hook-shaped projection in a groove provided on the component is almost free of play, so fit to use.
  • the wall thickness of the hook-shaped projection and the width of the groove are therefore coordinated.
  • the projection provided on the holder extends transversely to the pulling direction. This makes it possible that the holder does not move relative to the component during extraction of the pin.
  • the approach to an opening for receiving the pin results in a two-part approach to the holder, between which the pin can extend therethrough, provided that the groove extends transversely to the axial direction of the pin.
  • the pull rod has a thread which can be screwed to the pin. This allows a particularly secure and sufficiently reliable positive connection between pin and pin puller to pull the pin out of the hole.
  • FIG. 1 shows in an exploded view of a multi-part pin puller 10 according to the invention for pulling out a pin or bolt from a hole of a component.
  • the component may be, for example, a rotor disk of a gas turbine, as disclosed in the European patent application with the official registration file 07 000 381.9 is known.
  • the in the European patent application with the official registration file 07 000 381.9 disclosed subject matter explicitly incorporated into this patent application and thus part of the disclosure of this patent application.
  • the pin puller 10 comprises a holder 16, in the opening 14 of a pull rod 12 can be used.
  • the pull rod 12 is provided with at least a first threaded portion 18, on which a nut 20 can be screwed.
  • the holder 16 comprises, in addition to the opening 14, a contact surface 22 which can be applied to the area surrounding the hole from which the pin is to be pulled out. Furthermore, the holder 16 as a means for aligning the pin puller 10 relative to the component comprises a hook-shaped Approach 24, in which a further opening 26 is provided. The free end of the hook-shaped projection 24 extends transversely to the pulling direction Z of the tie rod 12.
  • the pull rod 12 includes a second portion 19, which is provided for producing a positive connection with the pin.
  • the portion 19 has a second external thread which can be screwed with a concentric internal thread provided on the pin.
  • FIG. 2 shows the multi-part pen puller 10 in the assembled state and in the screwed state with a pin 32 in cross-section.
  • the pin 32 is sunk in a component 30, for example in the rotor disk known from the aforementioned European patent applications and serves to secure a sealing element against displacement in the circumferential direction.
  • the pin 32 is seated in a hole 34 which extends through a provided in the component 30 on one side open groove 36.
  • an internal thread 40 is provided, which can be 29braubbar with the provided on the second portion 19 of the drawbar 12 thread.
  • the hook-shaped projection 24 of the holder 16 is used approximately without play in the groove 36, wherein the opening provided in the projection 24 26 engages around the pin 32 laterally.
  • the selected width of the opening 26 corresponds to the outer diameter of the pin 32. Due to the predetermined length of the two legs flanking the opening 26 of the projection 24, it is possible to position the axis of rotation of the tie rod 12 parallel to the axis and congruent to the axis of symmetry of the thread 40 of the pin 32.
  • the tie rod 12 in the pin 34 in a particularly simple manner be screwed. After reaching a required screwing the tie rod 12 can now be moved by means of the nut 20 by turning the nut 20 against the pull rod 12 in the pulling direction, the nut 20 is supported on the bracket 16 and the bracket 12 on the component 30. In order to prevent co-rotation of the pull rod 12 when turning the nut 20, this can be fixed by means of a wrench to be attached to the head 44 of the tie rod 12.

Abstract

The extractor (10) has a pull rod (12) provided with a thread, and a holder (16) accommodating the rod. The rod is supportable at the holder for detaching a pin (32) from a component (30) i.e. rotor disk of gas turbine. The pull rod is connected with the pin to be detached in a form-fit manner, and is movable in a pulling direction in a condition connected with the pin by rotation of a screw nut (20). The screw nut is supported at the holder. The holder includes an aligning unit for aligning the extractor opposite to the component.

Description

Die Erfindung betrifft einen mehrteiligen Stiftzieher zum Herausziehen eines Stifts oder Bolzens aus einem Loch eines Bauteils, umfassend eine mit einem Gewinde versehene Zugstange und eine die Zugstange aufnehmende Halterung, welche zum Lösen des Stifts aus dem Bauteil am letztgenannten abstützbar ist, wobei die Zugstange mit dem zu lösenden Stift verbindbar und im mit dem Stift verbundenen Zustand durch Drehen einer sich an der Halterung abstützenden Schraubenmutter in Ziehrichtung bewegbar ist.The invention relates to a multi-part pin puller for withdrawing a pin or bolt from a hole of a component, comprising a threaded tie rod and a tie rod receiving holder, which is supported for releasing the pin from the component to the latter, wherein the pull rod with the to be solved pin connectable and connected in the state connected to the pin by rotating a screw supporting itself on the holder in the drawing direction.

Mehrteilige Stiftzieher zum Herausziehen eines Stiftes oder Bolzens aus einem Loch eines Bauteils sind allgemein bekannt, wie beispielsweise aus der DE 18 53 600 U und DE 20 2006 014 177 U1 . Letztere beinhallet den Oberbegriff von Anspruch 1. Die Stifte sitzen üblicherweise fest im Bauteil und werden im Allgemeinen durch Reibschluss gehalten. Der Stift ist dabei häufig im Bauteil bündig versenkt. Zum Lösen des versenkten Stifts kommen mehrteilige Stiftzieher zum Einsatz. Der Stiftzieher umfasst dabei in der Regel eine mit dem herausziehenden Stift verschraubbare Zugstange, welche an der Halterung abstützbar ist und unter Einwirkung einer Kraft entlang seiner Axialrichtung zum Herausziehen des Stifts aus dem Bauteil bewegbar ist. Während des Stiftziehens stützt sich dabei die Halterung des Stiftziehers am Bauteil ab, welches somit das Widerlager für die auf die Zugstange wirkende Kraft bildet.Multi-part pin pullers for pulling out a pin or bolt from a hole of a component are well known, such as from DE 18 53 600 U and DE 20 2006 014 177 U1 , The latter includes the preamble of claim 1. The pins are usually fixed in the component and are generally held by frictional engagement. The pin is often sunk flush in the component. To loosen the countersunk pin multi-part pin pullers are used. As a rule, the pin puller comprises a pull rod which can be screwed to the withdrawing pin and which can be supported on the holder and can be moved under the action of a force along its axial direction to pull the pin out of the component. During pin pulling while the holder of the pin puller is supported on the component, which thus forms the abutment for the force acting on the pull rod force.

Es hat sich als nachteilig herausgestellt, dass beim Herausziehen des Stifts die Halterung bzw. die Zugstange gegenüber der Axialrichtung des Stifts verkippen kann, was beim Lösen des Stifts Beschädigungen am Bauteil hervorrufen kann. Bei den Beschädigungen kann es sich um Aufweitungen im Bereich der Lochöffnung handeln. Diese führen bei einem Einsetzen eines Ersatzstifts zu einem weniger festen Reibschluss zwischen Stift und Bauteil, was ein ungewolltes Lösen des Stifts aus dem Bauteil begünstigen kann.It has been found to be disadvantageous that when pulling out the pin, the holder or the pull rod can tilt with respect to the axial direction of the pin, which can cause damage to the component when loosening the pin. The damage can be widening in the area of the hole opening. These lead to a less firm frictional engagement when inserting a replacement pin between pin and component, which may favor an unintentional release of the pin from the component.

Sofern der zu ziehende Stift mit der Zugstange verschraubbar ist, können aufgrund einer nicht achsparallelen Anordnung von Stift und Zugstange auch die Gewindeanschnitte eines der beiden Komponenten verschleißen, so dass gegebenenfalls ein zu lösender Stift nicht mehr aus dem Bauteil entfernbar ist.If the pin to be pulled can be screwed to the pull rod, due to a non-axis-parallel arrangement of pin and pull rod and the threaded portions of one of the two components wear, so that if necessary, a pin to be solved is no longer removable from the component.

Aufgabe der Erfindung ist daher die Bereitstellung eines mehrteiligen Stiftziehers, durch den Beschädigungen am Bauteil, aus dem der Stift oder Bolzen herausgezogen werden soll, sicher vermieden werden.The object of the invention is therefore to provide a multi-part pen puller to be safely avoided by the damage to the component from which the pin or bolt to be pulled out.

Dementsprechend ist es weitere Aufgabe der Erfindung den Verschleiß der an der formschlüssigen Verbindung beteiligten Komponenten von Stift und Zugstange zu verringern.Accordingly, it is another object of the invention to reduce the wear of the components involved in the positive connection of pin and tie rod.

Diese Aufgabe wird erfindungsgemäß durch einen mehrteiligen Stiftzieher gemäß den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a multi-part pen puller according to the features of claim 1.

Der Erfindung liegt die Erkenntnis zugrunde, dass, wenn die Halterung Mittel zum Ausrichten des Stiftziehers gegenüber dem Bauteil aufweist, sowohl Verschleiß an dem an den Formschluss beteiligten Komponenten von Stift und Zugstange als auch ein Verkippen der Zugstange gegenüber der Axialrichtung des Stifts sicher vermieden werden kann. Aufgrund der vorgesehenen Mittel wird die Zugstange immer konzentrisch zur Axialachse des Stifts oder Bolzens entlang der Zugrichtung bewegt, so dass ein Verschleiß am Bauteil durch Verkippen vermieden werden kann. Ebenso kann der Verschleiß an den den Formschluss bildenden Komponenten des Stifts und des Stiftziehers sicher vermieden werden, da aufgrund der vorgegebenen fixen Ausrichtung und Positionierung des Stiftziehers gegenüber dem Stift jederzeit der Formschluss vorschriftsmäßig zustande kommen kann.The invention is based on the finding that when the holder has means for aligning the pin puller relative to the component, both wear on the parts of the pin and pull rod involved in the form-fitting and tilting of the pull rod relative to the axial direction of the pin can be reliably avoided , Due to the provided means, the pull rod is always moved concentrically to the axial axis of the pin or bolt along the pulling direction, so that wear on the component can be avoided by tilting. Likewise, the wear on the form-fitting components of the pin and the pin puller can be safely avoided because due to the predetermined fixed orientation and positioning of the pin puller relative to the pin at any time the positive locking can come about properly.

Die Halterung weist als Mittel zum Ausrichten des Stiftziehers einen hakenförmigen Ansatz auf. Der hakenförmige Ansatz ist dabei auf die Nuttiefe passend abgestimmt, so dass entlang dieser Richtung eine Verschiebung des Stiftziehers während des Lösens des Stiftes sicher vermieden werden kann.The holder has a hook-shaped projection as a means for aligning the pin puller. The hook-shaped projection is matched to the groove depth, so that along this direction a displacement of the pin puller during the release of the pin can be safely avoided.

Vorzugsweise Ausgestaltungen sind in den Unteransprüchen angegeben.Preferred embodiments are specified in the subclaims.

Zweckmäßigerweise ist der hakenförmige Ansatz in eine am Bauteil vorgesehene Nut annähernd spielfrei, also passgenau einsetzbar. Die Wandstärke des hakenförmigen Ansatzes und die Breite der Nut sind demnach aufeinander abgestimmt. Infolgedessen ergibt sich eine fehlerfreie Ausrichtung des Stiftziehers, bei der die zentrale Längsachse des Stiftes mit der Zugrichtung des Stiftziehers übereinstimmt. In einer weiteren vorteilhaften Ausgestaltung erstreckt sich der an der Halterung vorgesehene Ansatz quer zur Zugrichtung. Hierdurch ist es möglich, dass die Halterung während des Herausziehens des Stifts sich nicht gegenüber dem Bauteil verschiebt.Conveniently, the hook-shaped projection in a groove provided on the component is almost free of play, so fit to use. The wall thickness of the hook-shaped projection and the width of the groove are therefore coordinated. As a result, there is an error-free alignment of the pen puller, in which the central longitudinal axis of the pin coincides with the pulling direction of the pin puller. In a further advantageous embodiment, the projection provided on the holder extends transversely to the pulling direction. This makes it possible that the holder does not move relative to the component during extraction of the pin.

Insbesondere ist ein Verkippen des Bauteils um die zentrische Achse des Stifts nicht möglich. Folglich wird das Loch beim Lösen des Stifts nicht beschädigt, so dass nachfolgend eingesetzte Stifte in gleichbleibender Qualität, das heißt mit gleich zuverlässigem Reibschluss in das Loch einsetzbar sind.In particular, a tilting of the component about the centric axis of the pen is not possible. Consequently, the hole is not damaged when loosening the pin, so that subsequently used pins in consistent quality, that is to be used with the same reliable frictional engagement in the hole.

Bei einer vorteilhaften Weiterbildung der Erfindung weist der Ansatz eine Öffnung zur Aufnahme des Stifts auf. Hierdurch entsteht ein zweigeteilter Ansatz an der Halterung, zwischen dem der Stift sich hindurcherstrecken kann, sofern die Nut sich quer zur Achsrichtung des Stifts erstreckt. Zum Herstellen eines einfachen Formschlusses zwischen Zugstange und Stift weist die Zugstange ein Gewinde auf, welches mit dem Stift verschraubbar ist. Hierdurch kann eine insbesondere sichere und ausreichend zuverlässige Formschlussverbindung zwischen Stift und Stiftzieher hergestellt werden, um den Stift aus dem Loch herauszuziehen.In an advantageous embodiment of the invention, the approach to an opening for receiving the pin. This results in a two-part approach to the holder, between which the pin can extend therethrough, provided that the groove extends transversely to the axial direction of the pin. To produce a simple positive connection between the pull rod and pin, the pull rod has a thread which can be screwed to the pin. This allows a particularly secure and sufficiently reliable positive connection between pin and pin puller to pull the pin out of the hole.

Die Erfindung wird anhand einer Zeichnung erläutert.The invention will be explained with reference to a drawing.

Es zeigen:

FIG 1
einen mehrteiligen Stiftzieher in einer Explosionsdarstellung und
FIG 2
einen mit einem Stift verschraubten Stiftzieher gemäß FIG 1 in einer Schnittdarstellung.
Show it:
FIG. 1
a multi-part pen puller in an exploded view and
FIG. 2
a pen-type pen screwed with a pen according to FIG. 1 in a sectional view.

Identische Bauteile sind in allen Figuren mit identischen Bezugszeichen versehen.Identical components are provided in all figures with identical reference numerals.

FIG 1 zeigt in einer explosionsartigen Darstellung einen erfindungsgemäßen mehrteiligen Stiftzieher 10 zum Herausziehen eines Stifts oder Bolzens aus einem Loch eines Bauteils. Das Bauteil kann beispielsweise eine Rotorscheibe einer Gasturbine sein, wie sie aus der europäischen Patentanmeldung mit dem amtlichen Anmeldeaktenzeichen 07 000 381.9 bekannt ist. Durch diesen Verweis wird der in der europäischen Patentanmeldung mit dem amtlichen Anmeldeaktenzeichen 07 000 381.9 offenbarte Gegenstand explizit in diese Patentanmeldung eingebunden und somit Teil der Offenbarung dieser Patentanmeldung. FIG. 1 shows in an exploded view of a multi-part pin puller 10 according to the invention for pulling out a pin or bolt from a hole of a component. The component may be, for example, a rotor disk of a gas turbine, as disclosed in the European patent application with the official registration file 07 000 381.9 is known. By this reference, the in the European patent application with the official registration file 07 000 381.9 disclosed subject matter explicitly incorporated into this patent application and thus part of the disclosure of this patent application.

Der Stiftzieher 10 umfasst eine Halterung 16, in dessen Öffnung 14 eine Zugstange 12 eingesetzt werden kann. Die Zugstange 12 ist mit mindestens einem ersten Gewindeabschnitt 18 versehen, auf den eine Schraubenmutter 20 aufgeschraubt werden kann.The pin puller 10 comprises a holder 16, in the opening 14 of a pull rod 12 can be used. The pull rod 12 is provided with at least a first threaded portion 18, on which a nut 20 can be screwed.

Die Halterung 16 umfasst neben der Öffnung 14 eine Anlagefläche 22, welche an der Umgebung des Lochs, aus dem der Stift herausgezogen werden soll, flächig anlegbar ist. Des Weiteren umfasst die Halterung 16 als Mittel zum Ausrichten des Stiftziehers 10 gegenüber dem Bauteil einen hakenförmigen Ansatz 24, in dem eine weitere Öffnung 26 vorgesehen ist. Das freie Ende der hakenförmigen Ansatzes 24 erstreckt sich quer zur Zugrichtung Z der Zugstange 12.The holder 16 comprises, in addition to the opening 14, a contact surface 22 which can be applied to the area surrounding the hole from which the pin is to be pulled out. Furthermore, the holder 16 as a means for aligning the pin puller 10 relative to the component comprises a hook-shaped Approach 24, in which a further opening 26 is provided. The free end of the hook-shaped projection 24 extends transversely to the pulling direction Z of the tie rod 12.

Die Zugstange 12 umfasst einen zweiten Abschnitt 19, welcher zur Herstellung eines Formschlusses mit dem Stift vorgesehen ist. Vorzugsweise weist der Abschnitt 19 ein zweites Außengewinde auf, welches mit einem am Stift vorgesehenen konzentrischen Innengewinde verschraubbar ist.The pull rod 12 includes a second portion 19, which is provided for producing a positive connection with the pin. Preferably, the portion 19 has a second external thread which can be screwed with a concentric internal thread provided on the pin.

FIG 2 zeigt den mehrteiligen Stiftzieher 10 im zusammengesetzten Zustand und im mit einem Stift 32 verschraubten Zustand im Querschnitt. Der Stift 32 ist in einem Bauteil 30, beispielsweise in der aus der vorgenannten europäischen Patentanmeldungen bekannten Rotorscheibe versenkt und dient zur Sicherung eines Dichtelements gegen eine Verschiebung in Umfangsrichtung. FIG. 2 shows the multi-part pen puller 10 in the assembled state and in the screwed state with a pin 32 in cross-section. The pin 32 is sunk in a component 30, for example in the rotor disk known from the aforementioned European patent applications and serves to secure a sealing element against displacement in the circumferential direction.

Der Stift 32 sitzt dabei in einem Loch 34, welches sich durch eine im Bauteil 30 vorgesehene einseitig offene Nut 36 erstreckt. An der Stirnseite 38 des Stifts 32 ist ein Innengewinde 40 vorgesehen, welches mit dem am zweiten Abschnitt 19 der Zugstange 12 vorgesehenen Gewinde verschbraubbar ist. Der hakenförmige Ansatz 24 der Halterung 16 ist dabei annährend spielfrei in die Nut 36 eingesetzt, wobei die im Ansatz 24 vorgesehene Öffnung 26 den Stift 32 seitlich umgreift. Die gewählte Breite der Öffnung 26 korrespondiert zum Außendurchmesser des Stifts 32. Aufgrund der vorgegebenen Länge der beiden die Öffnung 26 flankierenden Schenkel des Ansatzes 24 ist es möglich, die Drehachse der Zugstange 12 achsparallel und deckungsgleich zur Symmetrieachse des Gewindes 40 des Stifts 32 zu positionieren. Hierdurch ist ein Verkanten der Zugstange 12 beim Einschrauben in das Gewinde 40 des Stifts 32 sicher vermieden, so dass sowohl das am zweiten Abschnitt 19 vorgesehene Außengewinde als auch das Innengewinde 40 des Stifts 32 unbeschädigt bleibt. Aufgrund der so zueinander ausgerichteten Bauteile kann in besonders einfacher Weise die Zugstange 12 in den Stift 34 eingeschraubt werden. Nach dem Erreichen einer erforderlichen Einschraubtiefe kann die Zugstange 12 mit Hilfe der Schraubenmutter 20 nun durch ein Verdrehen der Schraubmutter 20 gegenüber der Zugstange 12 in Zugrichtung bewegt werden, wobei die Schraubenmutter 20 sich an der Halterung 16 und die Halterung 12 sich am Bauteil 30 abstützt. Um ein Mitdrehen der Zugstange 12 beim Drehen der Schraubenmutter 20 zu verhindern, kann diese mittels eines am Kopf 44 der Zugstange 12 anzusetzenden Schraubenschlüssels fixiert werden.The pin 32 is seated in a hole 34 which extends through a provided in the component 30 on one side open groove 36. On the end face 38 of the pin 32, an internal thread 40 is provided, which can be verschbraubbar with the provided on the second portion 19 of the drawbar 12 thread. The hook-shaped projection 24 of the holder 16 is used approximately without play in the groove 36, wherein the opening provided in the projection 24 26 engages around the pin 32 laterally. The selected width of the opening 26 corresponds to the outer diameter of the pin 32. Due to the predetermined length of the two legs flanking the opening 26 of the projection 24, it is possible to position the axis of rotation of the tie rod 12 parallel to the axis and congruent to the axis of symmetry of the thread 40 of the pin 32. In this way, a tilting of the pull rod 12 when screwing into the thread 40 of the pin 32 is reliably avoided, so that both the provided on the second portion 19 outer thread and the internal thread 40 of the pin 32 remains undamaged. Due to the so aligned components, the tie rod 12 in the pin 34 in a particularly simple manner be screwed. After reaching a required screwing the tie rod 12 can now be moved by means of the nut 20 by turning the nut 20 against the pull rod 12 in the pulling direction, the nut 20 is supported on the bracket 16 and the bracket 12 on the component 30. In order to prevent co-rotation of the pull rod 12 when turning the nut 20, this can be fixed by means of a wrench to be attached to the head 44 of the tie rod 12.

Aufgrund des formschlüssigen Sitzes der Halterung 16 im Bauteil 30 kann ein Verkippen der Halterung 16 auch während des Herausziehens des Stifts 30 sicher vermieden werden. Eine Beschädigung des Lochs 35 im Bauteil 30 kann somit sicher ausgeschlossen werden, so dass nachfolgend eingesetzte Ersatzstifte in gleichem Maße wie erstmalig eingesetzte Stifte sicher sowie spielfrei gehalten werden.Due to the positive fit of the holder 16 in the component 30, a tilting of the holder 16 can be safely avoided even during the extraction of the pin 30. Damage to the hole 35 in the component 30 can thus be safely ruled out, so that subsequently used replacement pins are held securely and free of play to the same extent as pins used for the first time.

Claims (5)

  1. Multi-part pin remover (10) for removing a pin (32) or stud from a hole (34) of a component (30),
    said multi-part pin remover comprising a pull rod (12) that is provided with a thread and a holder (16) that accommodates the pull rod (12) and has a planar contact face (22) that is aligned at right angles to the pull rod (12),
    wherein the pull rod (12) is connectable in a positive locking manner to the pin (32) to be released and, in the state connected to the pin (32), is displaceable in the pulling direction (Z) by rotating a screw nut (20) that is supported on the holder (16), characterized in that
    the holder (16) has a hook-shaped projection (24) as means for aligning the pin remover (10).
  2. Multi-part pin remover (10) according to Claim 1, where the projection (24) is insertable preferably free from play into a groove (36) that is provided on the component (30).
  3. Multi-part pin remover (10) according to Claim 1 or 2, where the projection (24) provided on the holder (16) extends transversely relative to the pulling direction (Z).
  4. Multi-part pin remover (10) according to Claim 1, 2 or 3, where the projection (24) has an opening (26) for receiving the pin (32).
  5. Multi-part pin remover (10) according to one of Claims 1 to 4, where the pull rod (12) has two different threads (18, 19), one of which can be screw-connected to the pin (32) for forming a positive fit.
EP08717992A 2007-04-05 2008-03-19 Multi-part pin remover for removing a pin or stud from a hole of a component Not-in-force EP2132006B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08717992A EP2132006B1 (en) 2007-04-05 2008-03-19 Multi-part pin remover for removing a pin or stud from a hole of a component

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07007216A EP1977861A1 (en) 2007-04-05 2007-04-05 Multi-part pin remover for removing a pin or bolt from the hole of a component part
EP08717992A EP2132006B1 (en) 2007-04-05 2008-03-19 Multi-part pin remover for removing a pin or stud from a hole of a component
PCT/EP2008/053263 WO2008122491A1 (en) 2007-04-05 2008-03-19 Multi-part pin remover for removing a pin or stud from a hole of a component

Publications (2)

Publication Number Publication Date
EP2132006A1 EP2132006A1 (en) 2009-12-16
EP2132006B1 true EP2132006B1 (en) 2012-02-01

Family

ID=38226285

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07007216A Pending EP1977861A1 (en) 2007-04-05 2007-04-05 Multi-part pin remover for removing a pin or bolt from the hole of a component part
EP08717992A Not-in-force EP2132006B1 (en) 2007-04-05 2008-03-19 Multi-part pin remover for removing a pin or stud from a hole of a component

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07007216A Pending EP1977861A1 (en) 2007-04-05 2007-04-05 Multi-part pin remover for removing a pin or bolt from the hole of a component part

Country Status (5)

Country Link
US (1) US8256082B2 (en)
EP (2) EP1977861A1 (en)
JP (1) JP5220093B2 (en)
AT (1) ATE543611T1 (en)
WO (1) WO2008122491A1 (en)

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TW201313362A (en) * 2011-09-20 2013-04-01 Diro Tech Corp Chain riveter with position adjusting
CN102581811B (en) * 2012-02-21 2014-07-23 江汉大学 Detacher
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CN106514547A (en) * 2016-11-28 2017-03-22 国网河南偃师市供电公司 Multifunctional pin pulling pliers
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Also Published As

Publication number Publication date
EP2132006A1 (en) 2009-12-16
EP1977861A1 (en) 2008-10-08
JP2010523347A (en) 2010-07-15
WO2008122491A1 (en) 2008-10-16
US20100115747A1 (en) 2010-05-13
US8256082B2 (en) 2012-09-04
ATE543611T1 (en) 2012-02-15
JP5220093B2 (en) 2013-06-26

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