EP2643126B1 - Tool for assembling a securing ring - Google Patents

Tool for assembling a securing ring Download PDF

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Publication number
EP2643126B1
EP2643126B1 EP11790900.2A EP11790900A EP2643126B1 EP 2643126 B1 EP2643126 B1 EP 2643126B1 EP 11790900 A EP11790900 A EP 11790900A EP 2643126 B1 EP2643126 B1 EP 2643126B1
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EP
European Patent Office
Prior art keywords
adjusting
limbs
spindle
gripping means
tool
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
EP11790900.2A
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German (de)
French (fr)
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EP2643126A1 (en
Inventor
Bernd Thomas
Thomas Wagner
Horst Hofmann
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.)
Rennsteig Werkzeuge GmbH
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Rennsteig Werkzeuge GmbH
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Publication of EP2643126A1 publication Critical patent/EP2643126A1/en
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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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/20—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
    • 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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/20—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
    • B25B27/205—Pliers or tweezer type tools with tow actuated jaws
    • 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
    • Y10T29/53613—Spring applier or remover
    • Y10T29/5363—Circular spring

Definitions

  • the invention relates to a tool for mounting a locking ring, preferably for retaining rings with a diameter of greater than 400 mm, according to the preamble of claim 1.
  • Circlips are machine parts that are predominantly used to secure the position of bolts in holes, or components, such as bearings on a shaft or axle or in an inner bore. They belong to the standard parts, at least in the diameter range up to 400 mm.
  • the rings encountered in mechanical engineering are standardized according to DIN 471 for shaft grooves and DIN 472 for bore grooves, these embodiments are punched as a flat ring and ground and have two holes for disassembly and assembly by means of a special circlip pliers.
  • Circlip pliers or circlip pliers are known from the prior art for mounting circlips or snap rings on shafts or in bores.
  • the front ends (pins) of the circlip pliers, which are inserted into the holes of the circlip, are generally round in cross-section and can have grooves in the longitudinal direction.
  • U1 From the DE 295 19 915 U1 is a pliers for external retaining rings with a diameter greater than 300 mm known.
  • the pliers are equipped with a rack lock against the spring back tensioned rings.
  • the clamp ends are split apart in parallel.
  • the forceps tips extend in the direction of the longitudinal axis of the forceps and have a groove-shaped incision in the pressure direction to the mounting holes of the locking ring.
  • the leverage of the pliers is not enough to apply the necessary forces for spreading the rings. Due to the necessary length of the hand lever of the pliers can be used only conditionally for the installation of inner circlips.
  • the DE 201 02 624 U1 describes a forceps-like device for mounting and dismounting of retaining rings with a diameter greater than 400 mm.
  • the device has two scissor joint-like crossing arms whose drive ends are displaceable to change the distance of the pins by a spindle drive.
  • the end of the spindle has a polygonal profile, to which a wrench can be attached to rotate the spindle.
  • the tool is held with one hand on a handle on one of the arms and with the other hand, the wrench is operated.
  • handling is not straightforward.
  • the tool is already very heavy (over 3kg), which must be held with one hand, while the other hand presses the screw bowl at the end of the spindle. This causes additional complications, especially with heavy circlips.
  • the pins extend in the direction of the tool longitudinal axis, which in turn causes difficulties in the assembly of inner circlips.
  • the GB 1 190 946 A shows a collet for retaining rings, which is also designed in the manner of a compass.
  • a tool for mounting a retaining ring comprising two mutually movable jaws, one of which is attached to a handle. Between the jaws, which are connected by a hinge, a spindle drive for adjusting the jaws is arranged.
  • the tool should be suitable without structural changes both for the assembly of outer and inner retaining rings alike.
  • the tool comprises two adjusting legs, which are connected to each other by means of a rotary joint at their ends. At the free ends of the adjusting leg gripping means are provided for engagement in a mounting hole (eyelet or perforation) of the locking ring.
  • a spindle drive for the displacement of the adjusting leg is drivingly connected to the adjusting legs between the rotary joint and the free ends of the adjusting legs.
  • the advantages of the invention are to be seen in particular in that the tool is relatively small and lightweight and is easy to handle. Nevertheless, great forces can be on the Circlip can be transferred, so that even very large rings can be safely stretched and mounted on components.
  • At least one of the two adjusting legs has two partial legs, which are angled away from one another.
  • the adjusting legs or at least one of them can also be arcuately curved.
  • a particularly wide adjustment range can be achieved overall. This is particularly advantageous for clamping outer rings, in which the gripping means for clamping must be close to each other.
  • control legs can be made in one or more parts.
  • the spindle drive is arranged, for example, in each case on the part of the gripping means facing the gripping means.
  • the angle between the legs is in a preferred embodiment 90 °, but can also be made larger.
  • the spindle drive is preferably formed by an adjusting spindle which is rotatably and pivotally mounted in the adjusting legs, wherein a threaded bushing is provided in at least one of the adjusting legs, which is drive-connected with the adjusting spindle.
  • the spindle drive is preferably designed to be self-locking in order to prevent an unwanted change in position of the adjusting leg by the train or pressure of the tensioned locking ring. It is also possible to provide further securing mechanisms which prevent unintentional actuation of the spindle drive.
  • the spindle drive can also have in a known manner two opposing threaded portions which are mounted in a respective threaded bush in each one of the adjusting legs. Then, when turning the threaded spindle, both legs are moved relative to each other and fewer revolutions of the threaded spindle are required than with a threaded portion in order to achieve the same change in distance of the adjusting legs.
  • an angular gear is arranged on the threaded spindle, preferably between the adjusting legs, for rotating the threaded spindle.
  • the angular gear allows a favorable attitude of both operator hands when clamping the retaining ring.
  • the angle gear is preferably connected in a first gear stage with an adjusting screw, so that a change in position of the adjusting legs to each other is achieved by turning the screw. By choosing a favorable transmission ratio of the angular gear, a slight manual operation can be achieved.
  • the angle gear on a second gear stage which by means of an engagement point, an operation of the spindle drive by means of a motor-driven tool, such as a cordless screwdriver allowed.
  • the engagement point can be designed as a hexagon socket, internal round (Torx) or as a hexagon or the like.
  • the operator can then select the desired operating mode and gear stage.
  • a freewheel can be provided between the two gear stages to prevent unwanted actuation of the other gear stage.
  • the second gear stage can advantageously work with a relation to the first gear stage modified transmission ratio.
  • the gripping means are preferably designed in a known manner as pins, which are available in straight or particularly preferably in angled form and are preferably mounted interchangeably on the adjusting legs.
  • pins which are available in straight or particularly preferably in angled form and are preferably mounted interchangeably on the adjusting legs.
  • different types of pins can be provided for different circlip types.
  • the pins are rotated by 90 ° to the position of the adjusting legs, i. Angled to the main extension plane of the tool. It is particularly expedient if the angled pins extend in the direction of a pivot axis of the rotary joint about which the adjusting legs are pivoted. As a result, the pins always remain in a parallel position to each other in a simple manner, so that the clamping ring remains in its natural plane position during clamping and no stresses occur in other directions. As a result, the risk of jumping of the rings is prevented, which must be realized in the prior art by the relatively complex parallel guide.
  • the pins can in all embodiments all known features for securing the position of the retaining rings, such as groove-shaped incisions, eccentric top plates or the like.
  • FIG. 1 to 3 an inventive tool for mounting or dismounting a security ring, not shown, is shown.
  • the tool comprises two adjusting legs 01, 02, which are hinged together in a rotary joint 03.
  • the rotary joint 03 is provided at the first ends of the adjusting leg.
  • the adjusting legs 01, 02 carry at their second, free ends gripping means 04 for receiving the in mounting to exciting locking ring.
  • the gripping means 04 comprise in the illustrated embodiment in each case one in the image plane ( Fig. 1 and 2 ) into an angled pin 06 for receiving the retaining ring in its mounting holes.
  • the pins 06 thus extend at right angles to the main extension plane of the tool.
  • the adjusting legs 01, 02 comprise in the illustrated embodiment in each case two partial legs a, b, which are mutually angled ⁇ at an angle to each other.
  • the angle ⁇ is about 90 ° in the illustrated embodiment.
  • the two partial legs of a setting leg are firmly connected.
  • the angle ⁇ between partial legs is variable.
  • the gripping means 04 are interchangeable arranged at the free ends of the partial leg and preferably fixed with hand screws 07.
  • the gripping means are preferably used in longitudinal guides in the free ends of the adjusting legs 01, 02, which are dimensioned sufficiently stable to accommodate the partly high clamping forces when clamping large retaining rings.
  • a spindle drive comprising a threaded rod 09, a threaded bushing 11 and a bearing bush 12, is arranged to drive between the adjusting legs 01, 02, here between the partial legs a of the adjusting legs 01, 02.
  • the threaded bushing 11 is pivotally mounted in the adjusting leg 01.
  • the bearing bush 12 is pivotally mounted in the adjusting leg 02.
  • the adjusting spindle 09 is rotatably mounted in the bearing bush 12 and in the threaded bush 11, so that upon rotation of the threaded spindle 09, the adjusting legs 01, 02 are displaced against each other.
  • an angle gear 13 is preferably arranged in a housing 14 between the adjusting legs 01, 02.
  • the angle gear 13 has at least one adjusting wheel 16 for driving the threaded spindle 09.
  • a preferred embodiment of the angular gear 13 is based on the Fig. 4 explained below.
  • At the angle gear 13 is still an engagement point, here in the form of a hexagon socket 17, provided which can be coupled for actuation with a motor drive, for example with a cordless screwdriver or the like.
  • this engagement point 17 is associated with a second gear stage.
  • the partial limbs a are each formed by two parallel spaced plates 18, between which the partial limbs b are mounted at the respective angle ⁇ at one of their ends.
  • the threaded book 11 and bearing bush 12, as well as the gripping means 04 are also respectively secured between the plates 18 of the partial leg a.
  • the plate-like structure is known in the art from pliers-like tools and requires no further explanation.
  • the partial legs b are designed as profiles, preferably as hollow profiles 19, so a high load capacity and relatively low weight of the tool is achieved.
  • Fig. 4 Its housing 14 is provided with the bearing bush 12 and a second bearing bush 20 for the rotatable mounting of the threaded spindle 09.
  • the bearing bush 12 is pivotally mounted in the adjusting leg 02 (not shown here).
  • a first gear stage comprises a first bevel gear 21, which is rotatably connected to the threaded spindle 09.
  • the threaded spindle 09 preferably has no thread in a gear section 22.
  • a second bevel gear 23 is rotatably mounted in the housing 14 of the angular gear 13 and rotatably connected to the setting wheel 16.
  • the bevel gears 21, 23 are in a known manner angularly engaged with each other, wherein the numbers of teeth determine the translation of the angular gear.
  • the design and modification of the illustrated angle drive 13, also as a two-stage gearbox, prepares the expert no difficulties.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Manipulator (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Description

Die Erfindung betrifft ein Werkzeug zur Montage eines Sicherungsrings, vorzugsweise für Sicherungsringe mit einem Durchmesser von größer als 400 mm, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a tool for mounting a locking ring, preferably for retaining rings with a diameter of greater than 400 mm, according to the preamble of claim 1.

Sicherungsringe sind Maschinenteile, die überwiegend eingesetzt werden zur Lagesicherung von Bolzen in Bohrungen, oder von Bauteilen, beispielsweise Wälzlagern auf einer Welle oder Achse oder in einer Innenbohrung. Sie gehören zumindest im Durchmesserbereich bis 400 mm zu den Normteilen. Die im Maschinenbau anzutreffenden Ringe sind nach DIN 471 für Wellennuten und DIN 472 für Bohrungsnuten genormt, diese Ausführungsformen sind als flacher Ring gestanzt sowie geschliffen und weisen zwei Lochungen zur Demontage und Montage mittels einer speziellen Sicherungsringzange auf.Circlips are machine parts that are predominantly used to secure the position of bolts in holes, or components, such as bearings on a shaft or axle or in an inner bore. They belong to the standard parts, at least in the diameter range up to 400 mm. The rings encountered in mechanical engineering are standardized according to DIN 471 for shaft grooves and DIN 472 for bore grooves, these embodiments are punched as a flat ring and ground and have two holes for disassembly and assembly by means of a special circlip pliers.

Bei Innen-Sicherungsringen werden beim Einsatz in eine Bohrungsnut die Enden des Sicherungsrings zusammengedrückt. Bei Außensicherungsringen, welche in eine Nut einer Welle montiert werden, werden die Enden des Sicherungsrings zur Montage gespreizt. Für die verschiedenen Sicherungsringe gibt es daher verschiedene Sicherungsringzangen.For internal circlips, the ends of the circlip are compressed when inserted into a bore groove. In external locking rings, which are mounted in a groove of a shaft, the ends of the locking ring are spread for mounting. For the different circlips, there are therefore different circlip pliers.

Aus dem Stand der Technik sind Sicherungsringzangen oder Seegerringzangen bekannt, um Sicherungsringe bzw. Sprengringe auf Wellen oder in Bohrungen zu montieren. Die vorderen Enden (Pins) der Sicherungsringzange, welche in die Lochungen des Sicherungsrings eingesetzt werden, sind in aller Regel im Querschnitt rund und können Rillen in Längsrichtung haben.Circlip pliers or circlip pliers are known from the prior art for mounting circlips or snap rings on shafts or in bores. The front ends (pins) of the circlip pliers, which are inserted into the holes of the circlip, are generally round in cross-section and can have grooves in the longitudinal direction.

In verschiedenen industriellen Anwendungen, zum Beispiel in Windkraftanlagen, Walzstraßen, in der Schifffahrtindustrie oder auch Erdöl- oder Ergasgewinnungsanlagen kommen besonders große Sicherungsringe mit einem Durchmesser bis 1000 mm und teilweise mehr zum Einsatz. Diese sind aufgrund ihres Gewichts und der zur Montage oder Demontage erforderlichen hohen Spannkräfte nur unter Berücksichtigung besonderer Sicherheitsaspekte zu handhaben.In various industrial applications, for example in wind power plants, rolling mills, in the shipping industry or also oil or natural gas extraction plants, particularly large retaining rings with a diameter up to 1000 mm and sometimes more are used. Due to their weight and the high clamping forces required for assembly or disassembly, these are only to be handled taking into account special safety aspects.

Aus der DE 295 19 915 U1 ist eine Zange für Außensicherungsringe mit einem Durchmesser von größer als 300 mm bekannt. Die Zange ist mit einer Zahnstangensicherung gegen das Zurückfedern gespannter Ringe ausgestattet. Die Zangenenden werden parallel auseinandergeführt. Die Zangenspitzen erstrecken sich in Richtung der Längsachse der Zange und weisen eine nutförmige Einschneidung in Druckrichtung zu den Montageöffnungen des Sicherungsrings auf. Bei sehr großen Ringen reicht die Hebelkraft der Zange nicht aus, um die erforderlichen Kräfte zum Spreizen der Ringe aufzubringen. Aufgrund der notwendigen Länge der Handhebel der Zange lässt sich diese nur bedingt zur Montage von Innen-Sicherungsringen einsetzen.From the DE 295 19 915 U1 is a pliers for external retaining rings with a diameter greater than 300 mm known. The pliers are equipped with a rack lock against the spring back tensioned rings. The clamp ends are split apart in parallel. The forceps tips extend in the direction of the longitudinal axis of the forceps and have a groove-shaped incision in the pressure direction to the mounting holes of the locking ring. For very large rings, the leverage of the pliers is not enough to apply the necessary forces for spreading the rings. Due to the necessary length of the hand lever of the pliers can be used only conditionally for the installation of inner circlips.

Die DE 201 02 624 U1 beschreibt eine zangenartige Vorrichtung zur Montage und Demontage von Sicherungsringen mit einem Durchmesser von größer als 400 mm. Die Vorrichtung weist zwei sich scherengelenkartig kreuzende Arme auf, deren Antriebsenden zur Abstandsveränderung der Pins durch einen Spindeltrieb verlagerbar sind. Das Ende der Spindel besitzt ein Mehrkantprofil, an welchem ein Schraubenschlüssel angesetzt werden kann, um die Spindel zu drehen. Dazu wird das Werkzeug mit einer Hand an einem Griff an einem der Arme gehalten und mit der anderen Hand wird der Schraubenschlüssel betätigt. Bei sehr schweren Sicherungsringen ist die Handhabung nicht unkompliziert. Außerdem ist bereits das Werkzeug sehr schwer (über 3kg), welches mit einer Hand gehalten werden muss, während die andere Hand den Schraubenschüssel am Spindelende betätigt. Dies bereitet besonders bei schweren Sicherungsringen zusätzliche Komplikationen. Auch bei diesem Werkzeug erstrecken sich die Pins in Richtung der Werkzeuglängsachse, sodass wiederum Schwierigkeiten bei der Montage von Innen-Sicherungsringen entstehen.The DE 201 02 624 U1 describes a forceps-like device for mounting and dismounting of retaining rings with a diameter greater than 400 mm. The device has two scissor joint-like crossing arms whose drive ends are displaceable to change the distance of the pins by a spindle drive. The end of the spindle has a polygonal profile, to which a wrench can be attached to rotate the spindle. For this purpose, the tool is held with one hand on a handle on one of the arms and with the other hand, the wrench is operated. For very heavy circlips, handling is not straightforward. In addition, the tool is already very heavy (over 3kg), which must be held with one hand, while the other hand presses the screw bowl at the end of the spindle. This causes additional complications, especially with heavy circlips. Also with this tool, the pins extend in the direction of the tool longitudinal axis, which in turn causes difficulties in the assembly of inner circlips.

Aus der GB 2 067 453 A ist ein zirkelähnliches Werkzeug zur Montage oder Demontage von Sicherungsringen bekannt. Ein Spindeltrieb ist zwischen den Stellschenkeln vorgesehen.From the GB 2 067 453 A is a circle-like tool for mounting or dismounting of circlips known. A spindle drive is provided between the adjusting legs.

Die GB 1 190 946 A zeigt eine Spannzange für Sicherungsringe, die ebenfalls in der Art eines Zirkels gestaltet ist.The GB 1 190 946 A shows a collet for retaining rings, which is also designed in the manner of a compass.

Aus der US 6 678 930 B1 ist ein Werkzeug zur Montage eines Sicherungsringes bekannt, das zwei zueinander bewegbare Backen umfasst, von denen eine an einem Handgriff befestigt ist. Zwischen den Backen, die durch ein Drehgelenk verbunden sind, ist ein Spindeltrieb zur Verstellung der Backen angeordnet.From the US Pat. No. 6,678,930 B1 a tool for mounting a retaining ring is known, comprising two mutually movable jaws, one of which is attached to a handle. Between the jaws, which are connected by a hinge, a spindle drive for adjusting the jaws is arranged.

Es ist die Aufgabe der Erfindung, ein Werkzeug zur Montage oder Demontage von Sicherungsringen bereitzustellen, das insbesondere für Sicherungsringe mit Durchmessern größer als 400 mm verwendbar ist, wobei ein einfache und sichere Handhabung bei möglichst kompaktem und leichtem Werkzeug ermöglicht sein soll. Das Werkzeug soll sich ohne bauliche Veränderungen sowohl für die Montage von Außen- als auch Innen-Sicherungsringen gleichermaßen eignen.It is the object of the invention to provide a tool for mounting or dismounting of retaining rings, which is particularly suitable for retaining rings with diameters greater than 400 mm, with a simple and safe handling should be possible with the most compact and lightweight tool. The tool should be suitable without structural changes both for the assembly of outer and inner retaining rings alike.

Die Lösung der Aufgabe gelingt durch ein Werkzeug zur Montage oder Demontage eines Sicherungsrings mit den Merkmalen des Anspruchs 1.The object is achieved by a tool for mounting or dismounting a locking ring with the features of claim 1.

Das Werkzeug umfasst zwei Stellschenkel, die mittels eines Drehgelenkes an ihren Enden miteinander verbunden sind. An den freien Enden der Stellschenkel sind Greifmittel zum Eingriff in eine Montageöffnung (Öse oder Lochung) des Sicherungsrings vorgesehen. Ein Spindeltrieb zur Verlagerung der Stellschenkel ist zwischen dem Drehgelenk und den freien Enden der Stellschenkel antriebswirksam mit den Stellschenkeln verbunden.The tool comprises two adjusting legs, which are connected to each other by means of a rotary joint at their ends. At the free ends of the adjusting leg gripping means are provided for engagement in a mounting hole (eyelet or perforation) of the locking ring. A spindle drive for the displacement of the adjusting leg is drivingly connected to the adjusting legs between the rotary joint and the free ends of the adjusting legs.

Die Vorteile der Erfindung sind insbesondere darin zu sehen, dass das Werkzeug verhältnismäßig klein und leicht ist und einfach handhabbar ist. Trotzdem können große Kräfte auf den Sicherungsring übertragen werden, sodass auch sehr große Ringe gefahrlos gespannt und an Bauteilen montiert werden können.The advantages of the invention are to be seen in particular in that the tool is relatively small and lightweight and is easy to handle. Nevertheless, great forces can be on the Circlip can be transferred, so that even very large rings can be safely stretched and mounted on components.

In einer besonders bevorzugten Ausführungsform der Erfindung weist zumindest einer der beiden Stellschenkel zwei Teilschenkel auf, die zueinander abgewinkelt sind. Alternativ können die Stellschenkel oder zumindest einer von ihnen auch bogenförmig gekrümmt sein. Dadurch kann insgesamt ein besonders weiter Stellbereich erreicht werden. Dies ist insbesondere zum Spannen von Außenringen vorteilhaft, bei denen die Greifmittel zum Spannen dicht aneinander angenähert werden müssen.In a particularly preferred embodiment of the invention, at least one of the two adjusting legs has two partial legs, which are angled away from one another. Alternatively, the adjusting legs or at least one of them can also be arcuately curved. As a result, a particularly wide adjustment range can be achieved overall. This is particularly advantageous for clamping outer rings, in which the gripping means for clamping must be close to each other.

Die Stellschenkel können einteilig oder mehrteilig ausgeführt sein.The control legs can be made in one or more parts.

Bei der Ausführungsform, bei der beide Stellschenkel abgewinkelt sind, ist der Spindeltrieb beispielsweise jeweils an dem dem Greifmittel zugewandten Teilschenkel angeordnet. Der Winkel zwischen den Teilschenkeln ist in einer bevorzugten Ausführungsform 90°, kann aber auch größer ausgeführt sein.In the embodiment in which both adjusting legs are angled, the spindle drive is arranged, for example, in each case on the part of the gripping means facing the gripping means. The angle between the legs is in a preferred embodiment 90 °, but can also be made larger.

Der Spindeltrieb ist vorzugsweise durch eine in den Stellschenkeln drehbar und schwenkbar gelagerte Stellspindel gebildet, wobei in mindestens einem der Stellschenkel eine Gewindebuchse vorgesehen ist, welche antriebsbeweglich mit der Stellspindel verbunden ist. Der Spindeltrieb ist vorzugsweise selbsthemmend ausgeführt, um eine ungewollte Lageveränderung der Stellschenkel durch den Zug oder Druck des gespannten Sicherungsrings zu verhindern. Es können auch weitere Sicherungsmechanismen vorgesehen sein, die ein ungewolltes Betätigen des Spindeltriebes verhindern.The spindle drive is preferably formed by an adjusting spindle which is rotatably and pivotally mounted in the adjusting legs, wherein a threaded bushing is provided in at least one of the adjusting legs, which is drive-connected with the adjusting spindle. The spindle drive is preferably designed to be self-locking in order to prevent an unwanted change in position of the adjusting leg by the train or pressure of the tensioned locking ring. It is also possible to provide further securing mechanisms which prevent unintentional actuation of the spindle drive.

Der Spindeltrieb kann auch in bekannter Weise zwei gegenläufige Gewindeabschnitte aufweisen, die in je einer Gewindebuchse in je einem der Stellschenkel gelagert sind. Dann werden beim Drehen der Gewindespindel beide Schenkel relativ zueinander bewegt und es werden weniger Umdrehungen der Gewindespindel als mit einem Gewindeabschnitt benötigt, um dieselbe Abstandsänderung der Stellschenkel zu erreichen.The spindle drive can also have in a known manner two opposing threaded portions which are mounted in a respective threaded bush in each one of the adjusting legs. Then, when turning the threaded spindle, both legs are moved relative to each other and fewer revolutions of the threaded spindle are required than with a threaded portion in order to achieve the same change in distance of the adjusting legs.

In einer besonders bevorzugten Ausführungsform der Erfindung ist zum Drehen der Gewindespindel ein Winkelgetriebe an der Gewindespindel, vorzugsweise zwischen den Stellschenkeln, angeordnet. Das Winkelgetriebe ermöglicht eine günstige Haltung beider Bedienerhände beim Spannen des Sicherungsringes. Das Winkelgetriebe ist vorzugsweise in einer ersten Getriebestufe mit einer Stellschraube verbunden, so dass durch Drehen der Stellschraube eine Lageänderung der Stellschenkel zueinander erreicht wird. Durch die Wahl eines günstigen Übersetzungsverhältnisses des Winkelgetriebes kann eine leichte Handbetätigung erreicht werden.In a particularly preferred embodiment of the invention, an angular gear is arranged on the threaded spindle, preferably between the adjusting legs, for rotating the threaded spindle. The angular gear allows a favorable attitude of both operator hands when clamping the retaining ring. The angle gear is preferably connected in a first gear stage with an adjusting screw, so that a change in position of the adjusting legs to each other is achieved by turning the screw. By choosing a favorable transmission ratio of the angular gear, a slight manual operation can be achieved.

Bei einer abgewandelten Ausführungsform weist das Winkelgetriebe eine zweite Getriebestufe auf, welche mittels eines Eingriffspunktes eine Betätigung des Spindeltriebes mittels eines motorisch angetriebenen Werkzeugs, beispielsweise eines Akku-Schraubers, gestattet. Der Eingriffspunkt kann dabei als Innensechskant, Innenrund (Torx) oder auch als Sechskant oder dergleichen ausgeführt sein. Der Bediener kann dann die gewünschte Bedienart und Getriebestufe wählen. Gegebenenfalls kann zwischen den beiden Getriebestufen ein Freilauf vorgesehen sein, um eine ungewollte Betätigung der jeweils anderen Getriebestufe zu verhindern. Die zweite Getriebestufe kann vorteilhaft mit einem gegenüber der ersten Getriebestufe abgewandelten Übersetzungsverhältnis arbeiten.In a modified embodiment, the angle gear on a second gear stage, which by means of an engagement point, an operation of the spindle drive by means of a motor-driven tool, such as a cordless screwdriver allowed. The engagement point can be designed as a hexagon socket, internal round (Torx) or as a hexagon or the like. The operator can then select the desired operating mode and gear stage. Optionally, a freewheel can be provided between the two gear stages to prevent unwanted actuation of the other gear stage. The second gear stage can advantageously work with a relation to the first gear stage modified transmission ratio.

Die Greifmittel sind vorzugsweise in bekannter Weise als Pins ausgeführt, welche in gerader oder besonders bevorzugt in abgewinkelter Form zur Verfügung stehen und vorzugsweise auswechselbar an den Stellschenkeln angebracht sind. Für verschiedene Sicherungsringtypen können selbstverständlich verschiedenartige Pins vorgehalten werden.The gripping means are preferably designed in a known manner as pins, which are available in straight or particularly preferably in angled form and are preferably mounted interchangeably on the adjusting legs. Of course, different types of pins can be provided for different circlip types.

Als vorteilhaft hat sich herausgestellt, dass die Pins um 90° zur Lage der Stellschenkel, d.h. zur Haupterstreckungsebene des Werkzeugs abgewinkelt sind. Besonders zweckmäßig ist es, wenn die abgewinkelten Pins in Richtung einer Schwenkachse des Drehgelenkes verlaufen, um die die Stellschenkel geschwenkt werden. Dadurch bleiben die Pins auf einfache Art und Weise immer in einer parallelen Stellung zueinander, so dass der Sicherungsring beim Spannen in seiner natürlichen Ebenenlage verbleibt und keine Spannungen in anderen Richtungen auftreten. Dadurch wird auch die Gefahr des Abspringens der Ringe verhindert, was im Stand der Technik durch die relativ aufwendige Parallelführung realisiert werden muss.It has proven to be advantageous that the pins are rotated by 90 ° to the position of the adjusting legs, i. Angled to the main extension plane of the tool. It is particularly expedient if the angled pins extend in the direction of a pivot axis of the rotary joint about which the adjusting legs are pivoted. As a result, the pins always remain in a parallel position to each other in a simple manner, so that the clamping ring remains in its natural plane position during clamping and no stresses occur in other directions. As a result, the risk of jumping of the rings is prevented, which must be realized in the prior art by the relatively complex parallel guide.

Die Pins können in allen Ausführungsformen alle an sich bekannten Merkmale zur Lagesicherung der Sicherungsringe, wie nutförmige Einschneidungen, exzentrische Kopfplatten oder dergleichen aufweisen.The pins can in all embodiments all known features for securing the position of the retaining rings, such as groove-shaped incisions, eccentric top plates or the like.

Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der Figuren näher erläutert. Es zeigen:

Fig. 1:
ein erfindungsgemäßes Werkzeug zur Montage oder Demontage eines Sicherungsrings in einer halb geöffneten Stellung;
Fig. 2:
das Werkzeug gemäß Fig. 1 in einer geschlossenen Stellung;
Fig. 3:
das Werkzeug gemäß Fig. 2 in einer räumlichen Darstellung;
Fig. 4:
eine Detaildarstellung eines am Spindeltrieb des erfindungsgemäßen Werkzeuges vorgesehenen Winkelgetriebes.
A preferred embodiment of the invention will be explained in more detail with reference to FIGS. Show it:
Fig. 1:
an inventive tool for mounting or dismounting a locking ring in a half-open position;
Fig. 2:
the tool according to Fig. 1 in a closed position;
3:
the tool according to Fig. 2 in a spatial representation;
4:
a detailed representation of an angle gear provided on the spindle drive of the tool according to the invention.

In den Fig. 1 bis 3 ist ein erfindungsgemäßes Werkzeug zur Montage oder Demontage eines nicht dargestellten Sicherungsrings dargestellt. Dabei zeigen die Figuren 1 und 2 Seitenansichten in halb geöffneter bzw. geschlossener Stellung und Fig. 3 eine räumliche Darstellung.In the Fig. 1 to 3 an inventive tool for mounting or dismounting a security ring, not shown, is shown. The show Figures 1 and 2 Side views in half open or closed position and Fig. 3 a spatial representation.

Das Werkzeug umfasst zwei Stellschenkel 01, 02, die in einem Drehgelenk 03 gelenkig miteinander verbunden sind. Das Drehgelenk 03 ist dabei an ersten Enden der Stellschenkel vorgesehen. Die Stellschenkel 01, 02 tragen an ihren zweiten, freien Enden Greifmittel 04 zur Aufnahme des bei der Montage zu spannenden Sicherungsringes. Die Greifmittel 04 umfassen in der dargestellten Ausführungsform jeweils einen in die Bildebene (Fig. 1 und 2) hinein abgewinkelten Pin 06 zur Aufnahme des Sicherungsringes in dessen Montageöffnungen. Die Pins 06 erstrecken sich somit rechtwinklig zur Haupterstreckungsebene des Werkzeugs.The tool comprises two adjusting legs 01, 02, which are hinged together in a rotary joint 03. The rotary joint 03 is provided at the first ends of the adjusting leg. The adjusting legs 01, 02 carry at their second, free ends gripping means 04 for receiving the in mounting to exciting locking ring. The gripping means 04 comprise in the illustrated embodiment in each case one in the image plane ( Fig. 1 and 2 ) into an angled pin 06 for receiving the retaining ring in its mounting holes. The pins 06 thus extend at right angles to the main extension plane of the tool.

Die Stellschenkel 01, 02 umfassen in der dargestellten Ausführungsform jeweils zwei Teilschenkel a, b, die zueinander um einen Winkel α abgewinkelt miteinander verbunden sind. Der Winkel α beträgt in der dargestellten Ausführungsform etwa 90°. Im einfachsten Fall sind die beiden Teilschenkel eines Stellschenkels fest miteinander verbunden. Gemäß einer abgewandelten Ausführungsform ist der Winkel α zwischen Teilschenkeln veränderlich. Durch Anpassung des Winkels kann das Werkzeug an besondere Montagesituationen angepasste werden, beispielsweise um seine Gesamtbreite an den zur Verfügung stehenden Bauraum anzupassen.The adjusting legs 01, 02 comprise in the illustrated embodiment in each case two partial legs a, b, which are mutually angled α at an angle to each other. The angle α is about 90 ° in the illustrated embodiment. In the simplest case, the two partial legs of a setting leg are firmly connected. According to a modified embodiment, the angle α between partial legs is variable. By adjusting the angle, the tool can be adapted to particular mounting situations, for example, to adjust its overall width to the available space.

Die Greifmittel 04 sind an den freien Enden der Teilschenkel a auswechselbar angeordnet und vorzugsweise mit Handschrauben 07 fixiert. Die Greifmittel sind vorzugsweise in Längsführungen in den freien Enden der Stellschenkel 01, 02 eingesetzt, welche ausreichend stabil dimensioniert sind, um die teils hohen Spannkräfte beim Spannen großer Sicherungsringe aufzunehmen.The gripping means 04 are interchangeable arranged at the free ends of the partial leg and preferably fixed with hand screws 07. The gripping means are preferably used in longitudinal guides in the free ends of the adjusting legs 01, 02, which are dimensioned sufficiently stable to accommodate the partly high clamping forces when clamping large retaining rings.

Ein Spindeltrieb, umfassend eine Gewindestange 09, eine Gewindebuchse 11 und eine Lagerbuchse 12, ist antriebswirksam zwischen den Stellschenkeln 01, 02, hier zwischen den Teilschenkeln a der Stellschenkel 01, 02 angeordnet. Die Gewindebuchse 11 ist schwenkbar im Stellschenkel 01 befestigt. Die Lagerbuchse 12 ist schwenkbar im Stellschenkel 02 befestigt. Die Stellspindel 09 ist in der Lagerbuchse 12 und in der Gewindebuchse 11 drehbar gelagert, so dass bei einer Drehung der Gewindespindel 09 die Stellschenkel 01, 02 gegeneinander verlagert werden.A spindle drive, comprising a threaded rod 09, a threaded bushing 11 and a bearing bush 12, is arranged to drive between the adjusting legs 01, 02, here between the partial legs a of the adjusting legs 01, 02. The threaded bushing 11 is pivotally mounted in the adjusting leg 01. The bearing bush 12 is pivotally mounted in the adjusting leg 02. The adjusting spindle 09 is rotatably mounted in the bearing bush 12 and in the threaded bush 11, so that upon rotation of the threaded spindle 09, the adjusting legs 01, 02 are displaced against each other.

Auf der Gewindespindel 09 ist vorzugsweise zwischen den Stellschenkeln 01, 02 ein Winkelgetriebe 13 in einem Gehäuse 14 angeordnet. Das Winkelgetriebe 13 weist zumindest ein Stellrad 16 zum Antrieb der Gewindespindel 09 auf. Eine bevorzugte Ausführungsform des Winkelgetriebes 13 wird anhand der Fig. 4 weiter unten erläutert. Am Winkelgetriebe 13 ist weiterhin ein Eingriffspunkt, hier in Form eines Innensechskants 17, vorgesehen, der zur Betätigung mit einem motorischen Antrieb, beispielsweise mit einem Akkuschrauber oder dergleichen, koppelbar ist. Vorzugsweise ist diesem Eingriffspunkt 17 eine zweite Getriebestufe zugeordnet.On the threaded spindle 09, an angle gear 13 is preferably arranged in a housing 14 between the adjusting legs 01, 02. The angle gear 13 has at least one adjusting wheel 16 for driving the threaded spindle 09. A preferred embodiment of the angular gear 13 is based on the Fig. 4 explained below. At the angle gear 13 is still an engagement point, here in the form of a hexagon socket 17, provided which can be coupled for actuation with a motor drive, for example with a cordless screwdriver or the like. Preferably, this engagement point 17 is associated with a second gear stage.

In Fig. 3 ist zu erkennen, dass die Teilschenkel a jeweils durch zwei parallel beabstandete Platten 18 gebildet sind, zwischen denen an einem ihrer Enden die Teilschenkel b im entsprechenden Winkel α montiert sind. Die Gewindebuche 11 und Lagerbuchse 12, sowie die Greifmittel 04 sind ebenfalls jeweils zwischen den Platten 18 der Teilschenkel a befestigt. Der plattenartige Aufbau ist dem Fachmann aus zangenartigen Werkzeugen bekannt und bedarf hier keiner näheren Erläuterung.In Fig. 3 It can be seen that the partial limbs a are each formed by two parallel spaced plates 18, between which the partial limbs b are mounted at the respective angle α at one of their ends. The threaded book 11 and bearing bush 12, as well as the gripping means 04 are also respectively secured between the plates 18 of the partial leg a. The plate-like structure is known in the art from pliers-like tools and requires no further explanation.

Die Teilschenkel b sind als Profile, vorzugsweise als Hohlprofile 19 gestaltet, so wird eine große Belastbarkeit und relativ geringes Gewicht des Werkzeuges erreicht.The partial legs b are designed as profiles, preferably as hollow profiles 19, so a high load capacity and relatively low weight of the tool is achieved.

Fig. 4 zeigt eine räumliche Darstellung einer möglichen Ausführungsform des Winkelgetriebes 13. Dessen Gehäuse 14 ist mit der Lagerbuchse 12 und einer zweiten Lagerbuchse 20 für die drehbare Lagerung der Gewindespindel 09 versehen. Die Lagerbuchse 12 ist schwenkbar im Stellschenkel 02 montiert (hier nicht dargestellt). Fig. 4 Its housing 14 is provided with the bearing bush 12 and a second bearing bush 20 for the rotatable mounting of the threaded spindle 09. The bearing bush 12 is pivotally mounted in the adjusting leg 02 (not shown here).

Eine erste Getriebestufe umfasst ein erstes Kegelrad 21, welches drehfest mit der Gewindespindel 09 verbunden ist. Die Gewindespindel 09 weist in einem Getriebeabschnitt 22 vorzugsweise kein Gewinde auf. Ein zweites Kegelrad 23 ist im Gehäuse 14 des Winkelgetriebes 13 drehbar gelagert und mit dem Stellrad 16 drehfest verbunden. Die Kegelräder 21, 23 stehen in bekannter Weise winklig miteinander in Eingriff, wobei die Zähnezahlen die Übersetzung des Winkelgetriebes bestimmen. Die Gestaltung und Abwandlung des dargestellten Winkeltriebes 13, auch als zweistufiges Getriebe, bereitet dem Fachmann keine Schwierigkeiten.A first gear stage comprises a first bevel gear 21, which is rotatably connected to the threaded spindle 09. The threaded spindle 09 preferably has no thread in a gear section 22. A second bevel gear 23 is rotatably mounted in the housing 14 of the angular gear 13 and rotatably connected to the setting wheel 16. The bevel gears 21, 23 are in a known manner angularly engaged with each other, wherein the numbers of teeth determine the translation of the angular gear. The design and modification of the illustrated angle drive 13, also as a two-stage gearbox, prepares the expert no difficulties.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

01 -01 -
Stellschenkelparking leg
02 -02 -
Stellschenkelparking leg
03 -03 -
Drehgelenkswivel
04 -04 -
Greifmittelgripping means
05 -05 -
--
06 -06 -
PinPin code
07 -07 -
HandschraubeSet screw
08 -08 -
--
09 -09 -
Stellspindeladjusting spindle
10 -10 -
--
11 -11 -
Gewindebuchsethreaded bushing
12 -12 -
Lagerbuchsebearing bush
13 -13 -
Winkelgetriebeangle gear
14 -14 -
Gehäusecasing
15 -15 -
--
16 -16 -
Stellradthumbwheel
17 -17 -
InnensechskantAllen
18 -18 -
Platteplate
19 -19 -
Hohlprofilhollow profile
20 -20 -
Lagerbuchsebearing bush
21 -21 -
Kegelradbevel gear
22 -22 -
Getriebeabschnittgear section
23 -23 -
Kegelradbevel gear

Claims (8)

  1. Tool for assembly of a securing ring having:
    - two adjusting limbs (01, 02) connected with each other in a rotary joint (03), each of which on their free ends exhibits a gripping means (04) to engage into an assembly opening of the securing ring, wherein the rotary joint (03) is placed on the ends of the adjusting limbs (01, 02) opposite the ends carrying the gripping means (04);
    - a spindle drive running between the adjusting limbs (01, 02) to alter the distance of the adjusting limbs (01, 02), which are pivoted about the rotary joint (03) though, wherein the spindle drive engages in support points between the rotary joint (03) and the ends of the adjusting limbs (01, 02) carrying the gripping means (04); characterized in that at least one of the adjusting limbs (01, 02) exhibits two limb sections (a, b), which are angled toward each other at an angle α, and that the spindle drive is placed on the angled adjusting limbs (01 and/or 2) on the limb section (a) facing toward the gripping means (04).
  2. Tool according to claim 1, characterized in that the spindle drive is formed by an adjusting spindle (09) supported so as to rotate and swivel in the adjusting limbs (01, 02), wherein in at least one of the adjusting limbs (01, 02) a threaded bushing (11) is provided, which is connected in drive-movable fashion with the adjusting spindle (09).
  3. Tool according to claim 1 or 2, characterized in that on the adjusting spindle (09) an angular gear (13) is placed for driving the adjusting spindle (09).
  4. Tool according to claim 3, characterized in that the angular gear (13) exhibits two ratio stages, wherein a first ratio stage is to be operated by a manual wheel (16) and a second ratio stage can be coupled with a motorized drive.
  5. Tool according to one of claims 1 to 4, characterized in that the spindle drive exhibits two opposing thread sections, each of which is supported in one of the adjusting limbs in a threaded bushing.
  6. Tool according to one of claims 1 to 5, characterized in that the gripping means (04)is guided in a linear guidance placed in the adjusting limb (01, 02).
  7. Tool according to one of claims 1 to 6, characterized in that the gripping means (04) are attached in replaceable fashion on the adjusting limbs (01, 02).
  8. Tool according to one of claims 1 to 7, characterized in that each of the gripping means (04) possesses a pin (06), which extends at an angle relative to the main plane of extension of the tool, preferably at right angles to same.
EP11790900.2A 2010-11-25 2011-11-12 Tool for assembling a securing ring Not-in-force EP2643126B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010060790A DE102010060790B4 (en) 2010-11-25 2010-11-25 Tool for mounting a locking ring
PCT/EP2011/069988 WO2012069326A1 (en) 2010-11-25 2011-11-12 Tool for assembling a securing ring

Publications (2)

Publication Number Publication Date
EP2643126A1 EP2643126A1 (en) 2013-10-02
EP2643126B1 true EP2643126B1 (en) 2014-10-01

Family

ID=45093703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11790900.2A Not-in-force EP2643126B1 (en) 2010-11-25 2011-11-12 Tool for assembling a securing ring

Country Status (6)

Country Link
US (1) US20130255050A1 (en)
EP (1) EP2643126B1 (en)
CN (1) CN103237631A (en)
DE (1) DE102010060790B4 (en)
RU (1) RU2013128632A (en)
WO (1) WO2012069326A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106694985B (en) * 2016-12-10 2018-06-08 中国石油天然气集团公司 A kind of device for closing up and splitting for split-type cutting machine
US9981214B2 (en) * 2016-12-16 2018-05-29 Skitter & Squirt Adventures, Llc System and method for backflushing a vacuum filter
CN111215869B (en) * 2019-11-15 2022-06-07 利辛县宝隆橡塑密封件有限责任公司 Rubber seal ring pressing device

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Also Published As

Publication number Publication date
DE102010060790B4 (en) 2012-09-13
EP2643126A1 (en) 2013-10-02
US20130255050A1 (en) 2013-10-03
CN103237631A (en) 2013-08-07
DE102010060790A1 (en) 2012-05-31
RU2013128632A (en) 2014-12-27
WO2012069326A1 (en) 2012-05-31

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