WO1996018061A1 - Locking device for a push-in pipe connection with retaining system - Google Patents

Locking device for a push-in pipe connection with retaining system Download PDF

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Publication number
WO1996018061A1
WO1996018061A1 PCT/EP1995/004742 EP9504742W WO9618061A1 WO 1996018061 A1 WO1996018061 A1 WO 1996018061A1 EP 9504742 W EP9504742 W EP 9504742W WO 9618061 A1 WO9618061 A1 WO 9618061A1
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WO
WIPO (PCT)
Prior art keywords
elements
locking
locking device
locking elements
sleeve
Prior art date
Application number
PCT/EP1995/004742
Other languages
German (de)
French (fr)
Inventor
Jürgen RAMMELSBERG
Heinz Pawlowski
Markus Schütz
Original Assignee
Thyssen Industrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19503301A external-priority patent/DE19503301C1/en
Application filed by Thyssen Industrie Ag filed Critical Thyssen Industrie Ag
Publication of WO1996018061A1 publication Critical patent/WO1996018061A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/0842—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring which is split into a plurality of component parts which are held in place by means of a resilient ring member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling

Definitions

  • the invention relates to a locking device for a push-proof connection of pipes which have an insertion end which can be inserted with radial play into the sleeve end of an adjacent pipe, the sleeve end being an annular sleeve chamber with a support surface for locking elements arranged in the sleeve chamber and at least one has frontal, open to the sleeve chamber, divided by a central web window for inserting the locking elements into the sleeve chamber. It goes without saying that the sleeve end has a further sleeve chamber for receiving a sealing ring which seals with the insertion end.
  • the locking elements are first inserted axially into the sleeve chamber through one or more windows and then moved in the circumferential direction within the sleeve chamber until all locking elements are in the sleeve chamber are located and the last inserted locking element is also supported on the support surface behind the web.
  • the support surface of the sleeve chamber is a conical surface on which the locking elements are supported with a torus surface, which is designed in such a way that the normals of the torus surface always intersect the cylindrical jacket-shaped support surface of the locking elements, which lies on the peripheral surface of the insertion end. This ensures that for all tolerance pairs of
  • Plug-in and socket ends and impermissible force and voltage peaks can be avoided, even with normal pipe bends.
  • the other locking elements have tongues which extend beyond the sleeve end and rest on the peripheral surface of the insertion end and which are fixed with a bandage at the insertion end after assembly. This has proven itself in this respect, but it is considered a disadvantage that the locking elements are fixed at the insertion end.
  • the object of the invention is to provide a locking device of the type described in the opening paragraph, in which the locking elements can be fixed at the sleeve end.
  • the locking elements are connected to one another to form a flexible band and in that tensionable closure elements are arranged at the ends of the band via the web. Then, when assembling the plug connection, as in the generic version, the insertion end can first be inserted into the socket end and thus into the sealing ring, and the locking elements can then be introduced into the socket chamber. Finally, the closure elements are then placed over the web of the window and connected to one another, so that the locking elements are fixed at the end of the sleeve.
  • the closure elements can consist of flexible material, for example plastic or rubber, and have latching elements which can be connected to one another in a form-fitting manner at their ends.
  • the Locking elements can consist of at least one locking projection on the one hand and at least one locking recess on the other hand.
  • the latching elements can consist of at least one fork on the one hand and at least one latching projection behind the fork on the other hand. It is advantageous if the end of a closure element is designed such that it can be inserted in a form-fitting manner in a recess formed between the web and the adjacent window boundary, because then corresponding clamping forces only have to be applied to a closure element.
  • a preferred embodiment of the invention is characterized in that the locking elements are supported with a toothing on the peripheral surface of the insertion end. Then namely on the peripheral surface of the insertion end need no special holding parts, such as for holding beads in the generic embodiment.
  • the peripheral surface of the insertion end can be smooth.
  • connection of adjacent locking elements to a flexible band can be done in different ways. So connecting elements made of rubber, plastic or the like can be arranged between adjacent locking elements. Adjacent locking elements can also be held on a continuous metallic strand. In particular, the locking elements can be pushed onto the strand and attached to it. The attachment can be done by welding, soldering or gluing or by squeezing the strand. However, special fastening elements can also be dispensed with if the locking elements pushed onto the strand are fixed at a mutual distance from one another with spacer sleeves pushed onto the strand. To facilitate assembly, in particular the insertion and movement of the locking elements in the sleeve chamber, the locking elements can be provided with a detachable, low-friction cover.
  • FIG. 1 partially an axial section through a shear-proof plug connection for pipes
  • FIG. 2 partially and in the stretched state, a radial section through the sleeve chamber of a sleeve end with an inserted locking device
  • FIG. 3 shows another embodiment of the object according to FIG. 2,
  • FIG. 4 shows a section through a locking element
  • FIG. 5 is a partial view of a band of interlocking devices
  • FIG. 6 shows another embodiment of the object according to FIG. 5
  • FIG. 7 shows a further embodiment of the object according to FIG. 5,
  • FIG. 8 shows a section through a locking element with a friction-reducing sleeve.
  • the plug connection of pipes shown in the drawing includes an insertion end 1 and a socket end 2.
  • the insertion end 1 has a smooth peripheral surface 3.
  • the sleeve end 2 has in rear area a sleeve chamber 4 for receiving a sealing ring 5, which seals with the inserted end 1 with the peripheral surface 3.
  • the sleeve end 2 also has a larger sleeve chamber 6 in the front area, which is arranged to accommodate several, arranged around the circumference of the insertion end 1
  • Locking element 7 is determined.
  • the locking elements 7 are supported with a torus surface 8 on a cone surface 9 of the sleeve chamber 6, the torus surface 8 being designed such that the normals of the torus surface 8 always intersect the section of the locking elements 7 resting on the peripheral surface 3 of the insertion end 1. This ensures that impermissible force and voltage peaks are avoided with all tolerance pairings of insertion end 1 and socket end 2 and also normal angles of the associated pipes.
  • FIGS. 1 and 2 A comparison of FIGS. 1 and 2 reveals that the sleeve end 2 has at least one end window 10, which is open towards the sleeve chamber 6 and is divided by a central web 11.
  • the locking elements 7 are combined to form a flexible band.
  • the locking elements 7 are connected with strips 12 made of rubber or plastic in the embodiments of Figures 1, 2 and 8.
  • the free ends of the strips 12 are designed as closure elements 13 which have latching elements 14, 15 which can be positively connected to one another.
  • the embodiment according to Figure 2 the
  • the locking elements consist of a fork 16 molded onto one locking element 13 and of the other locking element 13 molded-on locking projections 17.
  • the one closure element 13 is designed so that it can be positively inserted into a recess formed between the web 11 and the adjacent window boundary 18.
  • the locking elements 7 can also be pushed onto a continuous metallic strand 19, for example a steel cable (FIG. 4) and fastened thereon by soldering or welding (FIG. 5) or by squeezing the strand (FIG. 6).
  • FIG. 7 Another possibility is shown in which spacer sleeves 20 also pushed onto the strand 19 are arranged between the locking elements 7 pushed onto the strand 19.
  • the plug-in end 1 When assembling the plug-in connection, the plug-in end 1 is first inserted into the socket end provided with the seal 5 until the plug-in end 1 seals with the seal 5. In this state, the seat of the seal 5 can still be checked and corrected if necessary. Then the locking elements 7 are inserted from the end of the sleeve end through the window 10 into the sleeve chamber 6, the mutual distance between adjacent locking elements 7 being so large that two adjacent locking elements 7 can be inserted into the window 10 on both sides of the web 11. The locking elements 7 are then moved with their connecting strips 12 in the circumferential direction in the sleeve chamber 6. To facilitate this assembly work, the locking elements 7 can be provided with a detachable, friction-reducing sleeve 21 (FIG. 8) which is later removed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

The invention concerns a locking device (7) for a push-in connection with retaining system for pipes (1, 2) provided with an insertion end which can be introduced with a degree of radial play into the sleeve end of an adjacent pipe. The sleeve end is provided with an annular sleeve chamber (6) with a stop surface for locking elements arranged in the sleeve chamber and with at least one opening situated at the front end, open towards the sleeve chamber and divided by a central ridge (11), for introducing the locking elements into the sleeve chamber. To ensure that the locking elements can be fixed to the sleeve end, the locking elements should be joined together to form a flexible strip and closure elements which can be tightened across the ridge should be provided at the strip ends.

Description

Beschreibung description
Verriegeluπgseinrichtung für eine schubgesicherte Steckverbindung von RohrenLocking device for a push-proof connection of pipes
Die Erfindung betrifft eine Verriegelungseinrichtung für eine schub-gβsicherte Steckverbindung von Rohren, die ein Einsteckende aufweisen, das mit radialem Spiel in das Muffenende eines benachbarten Rohres einschiebbar ist, wobei das Muffenende eine ringförmige Muffenkammer mit einer Abstützfläche für in der Muffenkammer angeordnete Verriegelungselemente sowie wenigstens ein stirnseitiges, zur Muffenkammer offenes, durch einen mittigen Steg geteiltes Fenster zum Einführen der Verriegelungselemente in die Muffenkammer aufweist. Es versteht sich, daß das Muffenende eine weitere Muffenkammer zur Aufnahme eines Dichtungsringes aufweist, der mit dem Einsteckende abdichtet.The invention relates to a locking device for a push-proof connection of pipes which have an insertion end which can be inserted with radial play into the sleeve end of an adjacent pipe, the sleeve end being an annular sleeve chamber with a support surface for locking elements arranged in the sleeve chamber and at least one has frontal, open to the sleeve chamber, divided by a central web window for inserting the locking elements into the sleeve chamber. It goes without saying that the sleeve end has a further sleeve chamber for receiving a sealing ring which seals with the insertion end.
Bei einer bekannten Ausführung der eingangs beschriebenen Gattung (EP 01 41 276) werden die Verriegungselemente nach dem Zusammenfügen der Steckverbindung einzeln durch ein oder mehrere Fenster zunächst axial in die Muffenkammer eingeschoben und dann innerhalb der Muffenkammer in Umfangsrichtung bewegt, bis alle Verriegelungselemente sich in der Muffenkammer befinden und das letzte eingeschobene Verriegelungselement sich auch an der Abstützfläche hinter dem Steg abstützt. Die Abstützfläche der Muffenkammer ist eine Kegelfläche, an der sich die Verriegelungselemente mit einer Torusfiäche abstützen, die so ausgebildet ist, da die Normalen der Torusfiäche stets die auf der Umfangsfläche des Einsteckendes anliegende zylindermantelförmige Stützfläche der Verriegelungselemente schneiden. Damit ist sichergestellt, daß bei allen Toleranzpaarungen vonIn a known embodiment of the type described at the beginning (EP 01 41 276), after the plug connection has been put together, the locking elements are first inserted axially into the sleeve chamber through one or more windows and then moved in the circumferential direction within the sleeve chamber until all locking elements are in the sleeve chamber are located and the last inserted locking element is also supported on the support surface behind the web. The support surface of the sleeve chamber is a conical surface on which the locking elements are supported with a torus surface, which is designed in such a way that the normals of the torus surface always intersect the cylindrical jacket-shaped support surface of the locking elements, which lies on the peripheral surface of the insertion end. This ensures that for all tolerance pairs of
Einsteckende und Muffenende und auch bei üblichen Abwinkelungen der Rohre unzulässige Kraft- und Spannungsspitzen vermieden werden. Im übrigen weisen die Verriegelungselemente Zungen auf, die sich über das Muffenende hinaus erstrecken und auf der Umfangsfläche des Einsteckendes aufliegen und die nach der Montage mit einer Bandage am Einsteckende festgelegt werden. Das hat sich insoweit bewährt, als nachteilig wird jedoch angesehen, daß die Verriegelungselemente am Einsteckende fixiert werden.Plug-in and socket ends and impermissible force and voltage peaks can be avoided, even with normal pipe bends. in the the other locking elements have tongues which extend beyond the sleeve end and rest on the peripheral surface of the insertion end and which are fixed with a bandage at the insertion end after assembly. This has proven itself in this respect, but it is considered a disadvantage that the locking elements are fixed at the insertion end.
Bekannt ist auch eine Ausführung (DE 41 34089), bei der die Verriegelungselemente miteinander zu einem flexiblen Band verbunden sind, an das ein ringförmiges Halteten angeformt ist, welches an oder über der Stirnseite des Muffenendes festgelegt wird. Damit können zwar die Verriegelungselemente am Muffenende fixiert werden, aber nur vor dem Einführen des Einsteckendes in das Muffenende.Also known is an embodiment (DE 41 34089) in which the locking elements are connected to one another to form a flexible band, onto which an annular holding element is molded, which is fixed on or above the end face of the sleeve end. This means that the locking elements can be fixed on the socket end, but only before the insertion end is inserted into the socket end.
Aufgabe der Erfindung ist es, eine Verriegelungseinrichtung der eingangs beschriebenen Gattung anzugeben, bei der die Verriegelungselemente am Muffenende fixierbar sind.The object of the invention is to provide a locking device of the type described in the opening paragraph, in which the locking elements can be fixed at the sleeve end.
Diese Aufgabe wird dadurch gelöst, daß die Verriegelungselemente miteinander zu einem flexiblen Band verbunden sind und daß an den Enden des Bandes über den Steg spannbare Verschlußelemente angeordnet sind. Dann kann bei der Montage der Steckverbindung wie auch bei der gattungsgemäßen Ausführung zunächst das Einsteckende in das Muffenende und damit in den Dichtungsring eingeführt werden und können anschließend die Verriegelungselemente in die Muffenkammer eingebracht werden. Abschließend werden dann die Verschlußelemente über den Steg des Fensters gelegt und miteinander verbunden, so daß die Verriegelungselemente am Muffenende fixiert sind.This object is achieved in that the locking elements are connected to one another to form a flexible band and in that tensionable closure elements are arranged at the ends of the band via the web. Then, when assembling the plug connection, as in the generic version, the insertion end can first be inserted into the socket end and thus into the sealing ring, and the locking elements can then be introduced into the socket chamber. Finally, the closure elements are then placed over the web of the window and connected to one another, so that the locking elements are fixed at the end of the sleeve.
Insbesondere können die Verschlußelemente aus flexiblem Material, zum Beispiel Kunststoff oder Gummi, bestehen und an ihren Enden formschlüssig miteinander verbindbare Rastelemente aufweisen. Die Rastelemente können einerseits aus zumindest einem Rastvorsprung und andererseits aus zumindest einer Rastausnehmung bestehen. Bei einer anderen Ausführung können die Rastelemente aus einerseits zumindest einer Gabel und andererseits aus zumindest einem die Gabel hinterfassenden Rastvorsprung bestehen. Vorteilhaft ist es, wenn das Ende eines Verschlußelementes so ausgebildet ist, daß es formschlüssig in eine zwischen dem Steg und der benachbarten Fensterbegrenzung gebildete Ausnehmung einsetzbar ist, weil dann entsprechende Spannkräfte lediglich an einem Verschlußelement aufgebracht werden müssen.In particular, the closure elements can consist of flexible material, for example plastic or rubber, and have latching elements which can be connected to one another in a form-fitting manner at their ends. The Locking elements can consist of at least one locking projection on the one hand and at least one locking recess on the other hand. In another embodiment, the latching elements can consist of at least one fork on the one hand and at least one latching projection behind the fork on the other hand. It is advantageous if the end of a closure element is designed such that it can be inserted in a form-fitting manner in a recess formed between the web and the adjacent window boundary, because then corresponding clamping forces only have to be applied to a closure element.
Eine bevorzugte Ausführung der Erfindung ist dadurch gekennzeichnet, daß die Verriegelungselemente sich mit einer Verzahnung auf der Umfangsfläche des Einsteckendes abstützen. Dann brauchen nämlich auf der Umfangsfläche des Einsteckendes keine besonderen Halteteile, wie zum Haltewülste bei der gattungsgemäßen Ausführung, vorhanden sein. Die Umfangsfläche des Einsteckendes kann glatt ausgebildet sein.A preferred embodiment of the invention is characterized in that the locking elements are supported with a toothing on the peripheral surface of the insertion end. Then namely on the peripheral surface of the insertion end need no special holding parts, such as for holding beads in the generic embodiment. The peripheral surface of the insertion end can be smooth.
Die Verbindung benachbarter Verriegelungselemente zu einem flexiblen Band kann auf verschiedene Weise erfolgen. So können zwischen benachbarten Verriegelungselementen Verbindungselemente aus Gummi, Kunststoff oder dergleichen angeordnet sein. Benachbarte Verriegelungselemente können auch an einem durchgehenden metallischen Strang gehalten sein. Insbesondere können die Verriegelungselemente auf den Strang aufgeschoben und daran befestigt sein. Die Befestigung kann durch Verschweißen, Verlöten oder Verkleben oder auch durch Verquetschen des Stranges erfolgen. Man kann aber auch auf besondere Befestigungselemente verzichten, wenn die auf den Strang aufgeschobenen Verriegelungselemente mit auf den Strang aufgeschobenen Distanzhülsen im gegenseitigen Abstand fixiert sind. Um die Montage, insbesondere das Einführen und Bewegen der Verriegelungselemente in der Muffenkammer zu erleichtern, können die Verriegelungselemente mit einer lösbaren, reibungsarmen Hülle versehen sein.The connection of adjacent locking elements to a flexible band can be done in different ways. So connecting elements made of rubber, plastic or the like can be arranged between adjacent locking elements. Adjacent locking elements can also be held on a continuous metallic strand. In particular, the locking elements can be pushed onto the strand and attached to it. The attachment can be done by welding, soldering or gluing or by squeezing the strand. However, special fastening elements can also be dispensed with if the locking elements pushed onto the strand are fixed at a mutual distance from one another with spacer sleeves pushed onto the strand. To facilitate assembly, in particular the insertion and movement of the locking elements in the sleeve chamber, the locking elements can be provided with a detachable, low-friction cover.
Im folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert; es zeigen:Exemplary embodiments of the invention illustrated in the drawing are explained below; show it:
Figur 1 teilweise einen Axialschnitt durch eine schubgesicherte Steckverbindung für Rohre,FIG. 1 partially an axial section through a shear-proof plug connection for pipes,
Figur 2 teilweise und in gestrecktem Zustand einen Radialschnitt durch die Muffenkammer eines Muffenendes mit eingeführter Verriegeiungseinrichtung,FIG. 2, partially and in the stretched state, a radial section through the sleeve chamber of a sleeve end with an inserted locking device,
Figur 3 eine andere Ausführung des Gegenstandes nach Figur 2,FIG. 3 shows another embodiment of the object according to FIG. 2,
Figur 4 einen Schnitt durch ein Verriegelungselement,FIG. 4 shows a section through a locking element,
Figur 5 teilweise die Ansicht eines Bandes aus miteinander verbundenen Verriegelungseinrichtungen,FIG. 5 is a partial view of a band of interlocking devices,
Figur 6 eine andere Ausführung des Gegenstandes nach Figur 5,FIG. 6 shows another embodiment of the object according to FIG. 5,
Figur 7 eine weitere Ausführung des Gegenstandes nach Figur 5,FIG. 7 shows a further embodiment of the object according to FIG. 5,
Figur 8 einen Schnitt durch ein Verriegelungselement mit reibungsmindernder Hülle.8 shows a section through a locking element with a friction-reducing sleeve.
Zu der in der Zeichnung dargestellten Steckverbindung von Rohren gehören ein Einsteckende 1 und ein Muffenende 2. Das Einsteckende 1 weist eine glatte Umfangsfläche 3 auf. Das Muffenende 2 weist im hinteren Bereich eine Muffenkammer 4 zur Aufnahme eines Dichtungsringes 5 auf, der bei eingeführtem Einsteckende 1 mit der Umfangsfläche 3 dichtet. Das Muffenende 2 weist außerdem im vorderen Bereich eine größere Muffenkammer 6 auf, die zur Aufnahme von mehreren, über den Umfang des Einsteckendes 1 angeordnetenThe plug connection of pipes shown in the drawing includes an insertion end 1 and a socket end 2. The insertion end 1 has a smooth peripheral surface 3. The sleeve end 2 has in rear area a sleeve chamber 4 for receiving a sealing ring 5, which seals with the inserted end 1 with the peripheral surface 3. The sleeve end 2 also has a larger sleeve chamber 6 in the front area, which is arranged to accommodate several, arranged around the circumference of the insertion end 1
Verriegelungselementβn 7 bestimmt ist. Die Verriegelungselemente 7 stützen sich mit einer Torusfiäche 8 an einer Konusfläche 9 der Muffenkammer 6 ab, wobei die Torusfiäche 8 so ausgebildet ist, daß die Normalen der Torusfiäche 8 stets den auf der Umfangsfläche 3 des Einsteckendes 1 aufliegenden Abschnitt der Verriegelungselemente 7 schneiden. Damit ist sichergestellt, daß bei allen Toleranzpaarungen von Einsteckende 1 und Muffenende 2 und auch üblichen Abwinkiungen der zugehörigen Rohre unzulässige Kraft- und Spannungsspitzen vermieden werden.Locking element 7 is determined. The locking elements 7 are supported with a torus surface 8 on a cone surface 9 of the sleeve chamber 6, the torus surface 8 being designed such that the normals of the torus surface 8 always intersect the section of the locking elements 7 resting on the peripheral surface 3 of the insertion end 1. This ensures that impermissible force and voltage peaks are avoided with all tolerance pairings of insertion end 1 and socket end 2 and also normal angles of the associated pipes.
Aus einem Vergleich der Figuren 1 und 2 entnimmt man, daß das Muffenende 2 zumindest ein stirnseitiges, zur Muffenkammer 6 hin offenes Fenster 10 aufweist, das durch einen mittigen Steg 11 geteilt ist.A comparison of FIGS. 1 and 2 reveals that the sleeve end 2 has at least one end window 10, which is open towards the sleeve chamber 6 and is divided by a central web 11.
Die Verriegelungselemente 7 sind miteinander zu einem flexiblen Band vereinigt. Dazu sind bei den Ausführungen der Figuren 1 , 2 und 8 die Verriegelungselemente 7 mit Streifen 12 aus Gummi oder Kunststoff verbunden. Die freien Ende der Streifen 12 sind als Verschlußelemente 13 ausgebildet, die formschlüssig miteinander verbindbare Rastelemente 14, 15 aufweisen. Bei der Ausführung nach Figur 2 bestehen dieThe locking elements 7 are combined to form a flexible band. For this purpose, the locking elements 7 are connected with strips 12 made of rubber or plastic in the embodiments of Figures 1, 2 and 8. The free ends of the strips 12 are designed as closure elements 13 which have latching elements 14, 15 which can be positively connected to one another. In the embodiment according to Figure 2, the
Rastelemente einerseits aus zumindest einem Rastvorsprung 14 am Ende des einen Verschlußelementes sowie aus zumindest einer Rastausnehmung 15 am Ende des anderen Verschlußelementes 13. Bei der Ausführung nach Figur 3 bestehen die Rastelemente aus einer an das eine Verschlußelement 13 angeformten Gabel 16 und aus an das andere Verschlußelement 13 angeformten Rastvorsprüngen 17. In Figur 3 erkennt man, daß das eine Verschlußelement 13 so ausgebildet ist, daß es formschlüssig in eine zwischen den Steg 11 und die benachbarte Fensterbegrenzung 18 gebildete Ausnehmung einsetzbar ist.Locking elements on the one hand from at least one locking projection 14 at the end of one locking element and from at least one locking recess 15 at the end of the other locking element 13. In the embodiment according to FIG. 3, the locking elements consist of a fork 16 molded onto one locking element 13 and of the other locking element 13 molded-on locking projections 17. In Figure 3 it can be seen that the one closure element 13 is designed so that it can be positively inserted into a recess formed between the web 11 and the adjacent window boundary 18.
Zur flexiblen Verbindung können die Verriegelungselemente 7 auch auf einen durchgehenden metallischen Strang 19, zum Beispiel ein Stahlseil, aufgeschoben sein (Figur 4) und daran durch Verlöten oder Verschweißen (Figur 5) oder durch Verquetschen des Stranges (Figur 6) befestigt sein. Eine andere Möglichkeit ist in Figur 7 dargestellt, bei der zwischen den auf den Strang 19 aufgeschobenen Verriegelungselementen 7 ebenfalls auf den Strang 19 aufgeschobene Distanzhülsen 20 angeordnet sind.For the flexible connection, the locking elements 7 can also be pushed onto a continuous metallic strand 19, for example a steel cable (FIG. 4) and fastened thereon by soldering or welding (FIG. 5) or by squeezing the strand (FIG. 6). Another possibility is shown in FIG. 7, in which spacer sleeves 20 also pushed onto the strand 19 are arranged between the locking elements 7 pushed onto the strand 19.
Bei der Montage der Steckverbindung wird zunächst das Einsteckende 1 in das mit der Dichtung 5 versehene Muffenende eingeschoben, bis das Einsteckende 1 mit der Dichtung 5 dichtet. In diesem Zustand kann der Sitz der Dichtung 5 noch kontrolliert und gegebenenfalls korrigiert werden. Dann werden von der Stirnseite des Muffenendes her die Verriegelungselemente 7 durch das Fenster 10 in die Muffenkammer 6 eingeführt, wobei der gegenseitige Abstand benachbarter Verriegelungselemente 7 so groß ist, daß zwei benachbarte Verriegelungselemente 7 beidseits des Steges 11 in das Fenster 10 eingeführt werden können. Die Verriegelungselemente 7 werden dann mit ihren verbindenden Streifen 12 in Umfangsrichtung in der Muffenkammer 6 bewegt. Zur Erleichterung dieser Montagearbeiten können die Verriegelungselemente 7 mit einer lösbaren, reibungsmindernden Hülle 21 versehen sein (Figur 8), die später entfernt wird.When assembling the plug-in connection, the plug-in end 1 is first inserted into the socket end provided with the seal 5 until the plug-in end 1 seals with the seal 5. In this state, the seat of the seal 5 can still be checked and corrected if necessary. Then the locking elements 7 are inserted from the end of the sleeve end through the window 10 into the sleeve chamber 6, the mutual distance between adjacent locking elements 7 being so large that two adjacent locking elements 7 can be inserted into the window 10 on both sides of the web 11. The locking elements 7 are then moved with their connecting strips 12 in the circumferential direction in the sleeve chamber 6. To facilitate this assembly work, the locking elements 7 can be provided with a detachable, friction-reducing sleeve 21 (FIG. 8) which is later removed.
Wenn alle Vemegelungselemente 7 in die Muffenkammer 6 eingeführt sind, befinden sich lediglich die Verschlußelemente 13 im Bereich des Fensters 10. Die mit den Rastelementen 13, 14 bzw. 14, 15 versehenen Enden der Verschlußelemente 13 werden dann über den Steg 11 gelegt und können dort miteinander verspannt werden. Durch Aufbringen einer entsprechenden Zugspannung werden die Verriegelungselemente 7 gegen das Einsteckende 1 verspannt, so daß eine an der Unterseite der Verriegelungselemente 7 vorgesehene Verzahnung 22 sich in die Umfangsfläche 3 des Einsteckendes 1 eingraben kann (Figur 1). When all locking elements 7 have been inserted into the sleeve chamber 6, only the closure elements 13 are located in the area of the window 10. The locking elements 13, 14 and 14, 15, respectively Ends of the closure elements 13 are then placed over the web 11 and can be clamped together there. By applying a corresponding tension, the locking elements 7 are braced against the insertion end 1, so that a toothing 22 provided on the underside of the locking elements 7 can dig into the peripheral surface 3 of the insertion end 1 (FIG. 1).
BezugszeichenlisteReference list
1 Einsteckende1 insertion end
MuffenendeSleeve end
UmfangsflächeCircumferential surface
MuffenkammerSleeve chamber
DichtungsringSealing ring
MuffenkammerSleeve chamber
VerriegelungselementeLocking elements
TorusfiächeTorus area
Konusfläche 0 Fenster 1 Steg 2 Streifen 3 Verschlußelemente 4 Rastvorsprung 5 Rastausnehmung 6 Gabel 7 Rastvorsprünge 8 Fensterbegrenzung 9 Strang 0 Distanzhülsen 1 HülleCone surface 0 window 1 web 2 strips 3 closure elements 4 locking projection 5 locking recess 6 fork 7 locking projections 8 window limitation 9 strand 0 spacer sleeves 1 sleeve
Verzahnung Gearing

Claims

Patentansprüche claims
1. Verriegelungseinrichtung für eine schubgesicherte Steckverbindung von Rohren, die ein Einsteckende aufweisen, das mit radialem Spiel in das Muffenende eines benachbarten Rohres einschiebbar ist, wobei das Muffenende eine ringförmige Muffenkammer mit einer Abstützfläche für in der Muffenkammer angeordnete Verriegelungselemente sowie wenigstens ein stimseitiges, zur Muffenkammer offenes, durch einen mittigen Steg geteiltes Fenster zum Einführen der Verriegelungselemente in die Muffenkammer aufweist, dadurch gekennzeichnet , daß die Verriegelungselemente (7) miteinander zu einem flexiblen Band verbunden sind und daß an den Enden des Bandes über den Steg (11) spannbare Verschlußelemente (13) angeordnet sind.1.Locking device for a push-proof plug connection of pipes which have an insertion end which can be inserted with radial play into the sleeve end of an adjacent pipe, the sleeve end being an annular sleeve chamber with a support surface for locking elements arranged in the sleeve chamber and at least one end-sided, to the sleeve chamber Open window, divided by a central web, for introducing the locking elements into the sleeve chamber, characterized in that the locking elements (7) are connected to one another to form a flexible band and that closure elements (13) which can be tensioned at the ends of the band via the web (11) ) are arranged.
Vemegelungseinrichtung nach Anspruch 1 , dadurch gekennzeichnet , daß die Verschlußelemente (13) aus flexiblem Material bestehen und an ihren Enden formschlüssig miteinander verbindbare Rastelemente (14, 15; 16, 17) aufweisen.Locking device according to claim 1, characterized in that the closure elements (13) consist of flexible material and have latching elements (14, 15; 16, 17) which can be positively connected to one another at their ends.
Vemegelungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß die Rastelemente einerseits aus zumindest einem Rastvorsprung (14) und andererseits aus zumindest einer Rastausnehmung (15) bestehen.Locking device according to claim 1 or 2, characterized in that the latching elements on the one hand consist of at least one latching projection (14) and on the other hand consist of at least one latching recess (15).
4. Verriegelungseinrichtung nach Anspruch 1 oder 3, dadurch gekennzeichnet , daß die Rastelemente aus einerseits zumindest einer Gabel (16) und anderseits aus zumindest einem die Gabel hinterfassenden Rastvorsprung (17) bestehen.4. Locking device according to claim 1 or 3, characterized in that the latching elements consist on the one hand of at least one fork (16) and on the other hand of at least one latching projection (17) behind the fork.
5. Verriegelungseinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß das Ende eines Verschlußelementes (13) so ausgebildet ist, daß es formschlüssig in eine zwischen den Steg (11) und der benachbarten Fensterbegrenzung (18) gebildete Ausnehmung einsetzbar ist.5. Locking device according to one of claims 1 to 4, characterized in that the end of a closure element (13) is designed such that it can be inserted in a form-fitting manner in a recess formed between the web (11) and the adjacent window boundary (18).
6. Verriegelungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß die Verriegelungselemente (7) sich mit einer Verzahnung (22) auf der Umfangsfläche (3) des Einsteckendes (1) abstützen.6. Locking device according to one of claims 1 to 5, characterized in that the locking elements (7) are supported with a toothing (22) on the peripheral surface (3) of the insertion end (1).
7. Verriegelungseinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet , daß zwischen benachbarten Verriegelungselementen (7) Verbindungselemente (12) aus Gummi oder Kunststoff angeordnet sind.7. Locking device according to one of claims 1 to 6, characterized in that between adjacent locking elements (7) connecting elements (12) made of rubber or plastic are arranged.
8. Verriegelungseinrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet , daß benachbarte Verriegelungselemente (7) an einem durchgehenden metallischen Strang (19) gehalten sind.8. Locking device according to one of claims 1 to 7, characterized in that adjacent locking elements (7) are held on a continuous metallic strand (19).
9. Verriegelungseinrichtung nach Anspruch 8, dadurch gekennzeichnet , daß die Verriegelungselemente (7) auf den Strang (19) aufgeschoben und daran befestigt sind.9. Locking device according to claim 8, characterized in that the locking elements (7) are pushed onto the strand (19) and fastened thereon.
10. Verriegelungseinrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet , daß die auf den Strang (19) aufgeschobenen Verriegelungselemente (7) mit auf den Strang (19) aufgeschobenen Distanzhülsen (20) im gegenseitigen Abstand fixiert sind.10. Locking device according to claim 8 or 9, characterized in that the locking elements (7) pushed onto the strand (19) are fixed with mutual spacing on the strand (19) pushed-on spacer sleeves (20).
11. Vemegelungseinrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet , daß die Verriegelungselemente (7) mit einer lösbaren, reibungsarmen Hülle (21) versehen sind. 11. Locking device according to one of claims 1 to 10, characterized in that the locking elements (7) are provided with a detachable, low-friction cover (21).
PCT/EP1995/004742 1994-12-08 1995-12-01 Locking device for a push-in pipe connection with retaining system WO1996018061A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9419400 1994-12-08
DEG9419400.9U 1994-12-08
DE19503301.9 1995-02-02
DE19503301A DE19503301C1 (en) 1994-12-08 1995-02-02 Locking device for a push-proof connection of pipes

Publications (1)

Publication Number Publication Date
WO1996018061A1 true WO1996018061A1 (en) 1996-06-13

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Application Number Title Priority Date Filing Date
PCT/EP1995/004742 WO1996018061A1 (en) 1994-12-08 1995-12-01 Locking device for a push-in pipe connection with retaining system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870967A1 (en) * 1997-04-09 1998-10-14 Pont-A-Mousson S.A. Locking connector for sewage pipes and split metallic ringused therein
GB2304163B (en) * 1995-08-05 1999-03-17 Uponor Ltd Pipe joint and electrofusion coupling therefor
KR100675065B1 (en) 2006-06-21 2007-01-30 주식회사 뉴보텍 A joint apparatus with ring for prevention of seperation
NL1044399B1 (en) * 2022-08-12 2024-02-16 H A Prince Beheer Bergen Op Zoom B V Clamp and/or insert ring.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910312A (en) * 1955-06-27 1959-10-27 Jr John Palmer Closure means
FR2496220A1 (en) * 1980-12-15 1982-06-18 Tiroler Roehren & Metallwerk SOCKET CONNECTOR AND MOUNTING METHOD THEREOF
DE4134089A1 (en) * 1991-10-15 1993-04-22 Dueker Eisenwerk SHEAR-PROOF SLEEVE CONNECTION
DE9311500U1 (en) * 1993-08-02 1993-09-16 Eisenwerke Fried. Wilh. Düker GmbH & Co, 97753 Karlstadt Thrust-protected push-in joint
DE9218211U1 (en) * 1992-02-05 1993-10-21 Eisenwerke Fried. Wilh. Düker GmbH & Co, 97753 Karlstadt Thrust-protected push-in joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910312A (en) * 1955-06-27 1959-10-27 Jr John Palmer Closure means
FR2496220A1 (en) * 1980-12-15 1982-06-18 Tiroler Roehren & Metallwerk SOCKET CONNECTOR AND MOUNTING METHOD THEREOF
DE4134089A1 (en) * 1991-10-15 1993-04-22 Dueker Eisenwerk SHEAR-PROOF SLEEVE CONNECTION
DE9218211U1 (en) * 1992-02-05 1993-10-21 Eisenwerke Fried. Wilh. Düker GmbH & Co, 97753 Karlstadt Thrust-protected push-in joint
DE9311500U1 (en) * 1993-08-02 1993-09-16 Eisenwerke Fried. Wilh. Düker GmbH & Co, 97753 Karlstadt Thrust-protected push-in joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304163B (en) * 1995-08-05 1999-03-17 Uponor Ltd Pipe joint and electrofusion coupling therefor
EP0870967A1 (en) * 1997-04-09 1998-10-14 Pont-A-Mousson S.A. Locking connector for sewage pipes and split metallic ringused therein
KR100675065B1 (en) 2006-06-21 2007-01-30 주식회사 뉴보텍 A joint apparatus with ring for prevention of seperation
NL1044399B1 (en) * 2022-08-12 2024-02-16 H A Prince Beheer Bergen Op Zoom B V Clamp and/or insert ring.

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