EP0060498B1 - Apparatus for connecting two abutting reinforcing bar ends by a sleeve - Google Patents

Apparatus for connecting two abutting reinforcing bar ends by a sleeve Download PDF

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Publication number
EP0060498B1
EP0060498B1 EP82101886A EP82101886A EP0060498B1 EP 0060498 B1 EP0060498 B1 EP 0060498B1 EP 82101886 A EP82101886 A EP 82101886A EP 82101886 A EP82101886 A EP 82101886A EP 0060498 B1 EP0060498 B1 EP 0060498B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
forming die
sleeve
base plate
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82101886A
Other languages
German (de)
French (fr)
Other versions
EP0060498A2 (en
EP0060498A3 (en
Inventor
Alto Mannhart
Georg Rieger
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.)
Walter Bau AG
Original Assignee
Dyckerhoff and Widmann 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
Application filed by Dyckerhoff and Widmann AG filed Critical Dyckerhoff and Widmann AG
Priority to AT82101886T priority Critical patent/ATE16153T1/en
Publication of EP0060498A2 publication Critical patent/EP0060498A2/en
Publication of EP0060498A3 publication Critical patent/EP0060498A3/en
Application granted granted Critical
Publication of EP0060498B1 publication Critical patent/EP0060498B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force
    • 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
    • Y10T29/5367—Coupling to conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the invention relates to a device for connecting two butt-jointed reinforcing bars provided with surface profiles by means of a sleeve pressed on by means of a drawing nozzle, which comprises a fixed device part with an abutment for supporting the sleeve and a device part which can be moved relative to the fixed device part parallel to the longitudinal direction of the reinforcing bars
  • Has holder for receiving the drawing nozzle with several cylinder-piston units are arranged between the two parts of the device for applying a central tensile force to the drawing nozzle and both the abutment and the movable holder for receiving the drawing nozzle are each provided with a slot extending from the end face whose width corresponds at least to the diameter of the assigned reinforcing bar.
  • So-called press joint joints are known to butt butt ends at the ends.
  • a sleeve is pushed over the ends of the bars to be connected, which is deformed by the application of external forces acting radially to the axis of the reinforcing bars so that their inner surface comes into direct contact with the outer surface of the reinforcing bars.
  • the sleeve is deformed by applying radial pressure by means of its drawing nozzle.
  • the known device can therefore only be used if the distance to adjacent reinforcement bars is very large.
  • Another disadvantage of the known device is that the drawing nozzle cannot act as far as the sleeve end adjacent to the abutment, so that a non-deformed sleeve section remains.
  • the invention is therefore based on the object to provide a device of the type mentioned, which makes it possible to carry out press joints even when the reinforcing bars to be connected are arranged at close distances from one another and the sleeve continuously from one side to its full Length together.
  • this object is achieved in that one or more cylinder-piston unit (s) acting in the pulling direction of the drawing nozzle is (are) eccentric to the drawing nozzle, that on the side opposite the drawing nozzle the latter cylinder-piston Unit (s) at least one further cylinder-piston unit is arranged with a counter-rotating cylinder, which can be acted upon in the opposite direction with pressure medium, that the abutment for supporting the sleeve is designed as a bracket and the holder for the drawing nozzle as a cantilever part and that the bracket has a two-part support sleeve which is arranged between the bracket and the adjacent end face of the sleeve and the dimensions of which are selected such that the drawing nozzle can be moved up to the end of the sleeve located in this area.
  • the two-part support sleeve expediently consists of two shell-shaped parts surrounding the reinforcing bar, each of which has a flange-like widening at the upper end.
  • the two parts of the support sleeve with the flange-like widenings can be pivotally connected to the console about axes running parallel to the axis of the drawing nozzle, wherein springs can be provided in order to hold the two parts of the support sleeve in the closed position.
  • a base plate is expediently provided as a holder for receiving the drawing nozzle on the movable device part and the drawing nozzle is inserted into a recess in this base plate that widens the longitudinal slot.
  • the drawing nozzle advantageously consists of at least two ring-shaped parts which complement one another to form a closed ring cross-section, preferably of two parts of different base length, of which the shorter, inner part is firm but detachable, e.g. B. connected by screws to the base plate and the longer outer part can be inserted loosely into the recess in the base plate.
  • the outer part expediently has a shoulder on the underside with which it is supported against corresponding abutments at the front ends of the base plate.
  • the cylinder spaces of the cylinder-piston units can be provided in a uniform cylinder housing forming the upper machine part. But you can also each put on a base plate and connected to this and an upper cover plate, for. B. screwed.
  • a stiffening plate is expediently arranged in the plane of action of the resultant force, which is firmly connected to both the base plate and the cover plate, for. B. welded or screwed.
  • the device 1 as shown in FIGS. 1 to 4, essentially consists of an upper device part 2 and a lower device part 3, which are connected to one another by cylinder-piston units and can be moved relative to one another by means of these.
  • the upper device part 2 which is fixed during operation, comprises a one-piece cylinder housing 4, in which a cylinder space 5 for a pull cylinder 6 and a cylinder space 7 for a counter-rotating cylinder 8 are arranged through bores.
  • a piston 9 with a piston rod 10 can be moved in the cylinder chamber 5;
  • a piston rod 11 runs in the cylinder space 7 and is designed such that the part engaging in the cylinder space 7 acts as a piston.
  • a fork-shaped bracket 12 is formed on the cylinder housing 4 (cf. also FIG. 2), with which the device 1 can enclose one of the reinforcement bars 13, 14 to be connected, into the spaces between - indicated by dashed lines - adjacent reinforcement bars.
  • a sleeve 15 is pushed over the reinforcing bars 13, 14 in the joint area, which is to be brought into firm contact with the reinforcing bars 13, 14 provided with surface profiles by means of a drawing nozzle 35 by radial deformation.
  • a support sleeve 16 is operatively connected to the console 12.
  • the support sleeve 16 comprises a slender lower part 17, with which it is supported at the upper end of the sleeve 15, and a flange-like widening 18, with which it is fixed to the bracket 12 in a non-positive and positive manner.
  • the entire support sleeve 16 in turn consists of two shell-shaped parts 17 ', 17 ", each with a flange-like widening 18', 18" (Fig. 5), which are pivotally attached to the bracket 12 about the axes of bolts 19 in the direction of arrows 20 .
  • the pivoting movement takes place against the action of flat springs 21, which are fixed laterally on the outside of the bracket 12 by means of pressure pieces 22 and screws 23.
  • the flange-like widenings 18 'and 18 "of the support sleeve 16 have bevels 24 on the end face. These bevels 24 serve as sliding surfaces when the device 1 with the bracket 12 is pushed above a sleeve 15 over a reinforcing bar 13, the two shell-shaped parts of the The support sleeve 16 opens and closes the rod 13 between them again, and in the closed position the two parts of the support sleeve 16 can be locked by adjusting bolts 15 (FIG. 6) which are guided in bores 26 in the bracket 12 and in bores 27 penetrate into the flange-like widenings 18 'or 18 ". A plate 28 is screwed onto the underside of the console 12 as a wearing part.
  • Fig. 2a only a cross-section of a second embodiment of the device according to Fig. 1 is shown, in which the fixed device part 2a has two pull cylinders 6a and 6b instead of a pull cylinder, which are arranged side by side and symmetrically to the longitudinal axis of the device.
  • the two pull cylinders 6a and 6b correspond to cylinder spaces 5a and 5b; the counter-running cylinder 8a has a cylinder space 7a, as in the example in FIG. 2.
  • the lower device part 3 consists of a base plate 29 with blind bores 30, into which the piston rods 10 and 11 of the pull cylinder 6 or counter-cylinder 8 are inserted and fastened by means of end screws 31.
  • the base plate 29 is widened in its region 32 forming a cantilever part (FIG. 3).
  • the front end 33 is fork-shaped through a longitudinal slot 34 and serves to hold the drawing nozzle 35.
  • the drawing nozzle 35 consists of two annular parts, namely a shorter, inner part 36a and a longer, outer part 36b, which are inserted into a recess 66 in the base plate 29.
  • the through the inner, attached to the base plate 29, for. B. screwed part 36a to be closed opening in the outer part 36b must be so large that the device can be pushed from the side onto the reinforcing bars to be connected.
  • the outer part 36b is then inserted into the recess 66 (FIG. 3a).
  • the drawing nozzle can also consist of two halves 37a, 37b, both of which are removable and can each be inserted when the device is attached (FIG. 3b).
  • FIGS. 9 and 10 A further exemplary embodiment for the design of the base plate is shown in FIGS. 9 and 10, of which FIG. 9 shows a longitudinal section through such a base plate and FIG. 10 shows a plan view represent.
  • the base plate 29 ' also has a longitudinal slot 34' extending from its front end 33 'with a recess 66 into which the drawing nozzle 35 "is inserted.
  • the drawing nozzle 35" has the shape of a circular ring and consists of a shorter inner part 36a' , the Z. B. is fixed by a screw to the base plate 29 ', and from a correspondingly longer outer part 36b', which in turn is only loosely inserted into the recess 66.
  • the longer part 36b' of the drawing nozzle has a shoulder 64 on its underside, which is in the in the inserted state against a corresponding shoulder 65 at the front end 33 'of the base plate 29' (FIG. 9), which ensures that the radial forces occurring in the drawing nozzle in the area of these shoulders 64 and 65 only act as normal forces on the base plate 29 ' are released, which act vertically on the shoulders so that the two arms of the drawing nozzle 29 'are not spread apart, but are only stressed in the longitudinal direction.
  • the device 1 is brought into position after aligning the reinforcing bars 13 and 14 and attaching the socket 15.
  • a handle 38 (FIGS. 1 and 4).
  • the device is positioned so that the console 12 is above the sleeve 15 in such a position that the two shell-shaped parts 17 ', 18' and 17 ", 18" of the support sleeve 16 enclose the sleeve 15 and therefore cannot close .
  • the device is held in this position in that the plate 28 (FIG. 6) lies on top of the sleeve 15.
  • the sleeve 15 can be held in the intended position, for example, by looping wire wire around the reinforcing bar 14 immediately below the sleeve.
  • a pressure medium line 39 now supplies pressure medium in the direction of the arrow 40 (FIG. 1) which, via the cylinder space 7, the pressure surface 41 of the piston rod 11 of the counter-rotating cylinder 8 and, by introduction into the lower part of the cylinder space 5, the piston 9 of the pull cylinder 6 from acted on below. In this way, in addition to the tensile force exerted on the pull cylinder 6, a pressure force is exerted on the counter-rotating cylinder 8.
  • the ratio of the pressure surface of the pull cylinder 6 to that of the counter-cylinder 8 must be exactly as large as the ratio of the distance b of the axis of the pull cylinder 6 from the axis of the reinforcing bars 13, 14 or the drawing nozzle 35 to the distance a of the axis of the counter-cylinder 8 to the axis of the reinforcing bars 13, 14.
  • the bending moment triggered by the counter-rotating cylinder 8 compensates for the bending moment which arises when the pulling cylinder acts, so that the base plate 29 with the drawing nozzle 35 is slowly and evenly pulled over the sleeve 15, which is plastically deformed.
  • the upper device part 2b here comprises a pull cylinder 42 and a counter-rotating cylinder 43 as individual units which are connected by a base plate 44. At the upper ends, the cylinders 42 and 43 are combined and connected by a cover plate 45. The connections are each made by screws 46.
  • a stiffening plate 47 which is connected on the one hand to the cylinder 42 via a lug 48 and to the counter-rotating cylinder 43 via lateral wings 49. Otherwise, in particular also with regard to the lower part of the device, this device is designed in the same way as that which was described in connection with FIGS. 1 to 4.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Wire Processing (AREA)
  • Forging (AREA)
  • Automatic Assembly (AREA)
  • Coating Apparatus (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

A device for securing a sleeve on the abutting ends of two axially aligned reinforcing bars includes an upper device part, a lower device part aligned below the upper device part and a drawing die mounted on the lower device part. Cylinder-piston units interconnect the upper and lower device parts for moving the drawing die over the sleeve and coupling the reinforcing bars together. The cylinder-piston units are disposed in parallel relation to one another and to the axis of the drawing die. At least one cylinder-piston unit provides the drawing force and another provides a counteracting force. The cylinder-piston units are both located on the same side of the drawing device axis and are spaced at different distances from the drawing die axis.

Description

Die Erfindung betrifft ein Gerät zum Verbinden von zwei stumpf gestoßenen, mit Oberflächenprofilierungen versehenen Bewehrungsstäben durch eine mittels einer Ziehdüse aufgepreßten Muffe, das ein feststehendes Geräteteil mit einem Widerlager zum Abstützen der Muffe und ein relativ zum feststehenden Geräteil parallel zur Längsrichtung der Bewehrungsstäbe bewegbares Geräteteil mit einer Halterung zur Aufnahme der Ziehdüse aufweist, wobei zwischen beiden Geräteteilen mehrere Zylinder-Kolben-Einheiten zum Aufbringen einer zentrischen Zugkraft auf die Ziehdüse angeordnet sind und sowohl das Widerlager als auch die bewegbare Halterung zur Aufnahme der Ziehdüse mit jeweils einem von der Stirnseite ausgehenden Schlitz versehen sind, dessen Breite mindestens dem Durchmesser des zugeordneten Bewehrungsstabes entspricht.The invention relates to a device for connecting two butt-jointed reinforcing bars provided with surface profiles by means of a sleeve pressed on by means of a drawing nozzle, which comprises a fixed device part with an abutment for supporting the sleeve and a device part which can be moved relative to the fixed device part parallel to the longitudinal direction of the reinforcing bars Has holder for receiving the drawing nozzle, with several cylinder-piston units are arranged between the two parts of the device for applying a central tensile force to the drawing nozzle and both the abutment and the movable holder for receiving the drawing nozzle are each provided with a slot extending from the end face whose width corresponds at least to the diameter of the assigned reinforcing bar.

Um Bewehrungsstäbe an den Enden stumpf zu stoßen, sind sogenannte Preßmuffenstöße bekannt. Dabei wird über die Enden der zu verbindenden Stäbe eine Muffe geschoben, die durch Anwendung von äußeren, radial zur Achse der Bewehrungsstäbe wirkenden Kräften so verformt wird, daß ihre Innenfläche in unmittelbare Berührung mit der Außenfläche der Bewehrungsstäbe gelangt. Die Verformung der Muffe erfolgt durch Anwendung radialen Drucks mittetseiner Ziehdüse.So-called press joint joints are known to butt butt ends at the ends. In this case, a sleeve is pushed over the ends of the bars to be connected, which is deformed by the application of external forces acting radially to the axis of the reinforcing bars so that their inner surface comes into direct contact with the outer surface of the reinforcing bars. The sleeve is deformed by applying radial pressure by means of its drawing nozzle.

Nun ist es im Bauwesen erforderlich, diese Verbindungen von Bewehrungsstäben nicht nur überhaupt, sondern vor allem auf der Baustelle am Bauwerk selbst herstellen zu können. So ist es beispielsweise häufig erforderlich, Bewehrungsstäbe an die aus dem Beton herausstehenden Enden bereits einbetonierter Bewehrungsstäbe anzuschließen. Um dies zu ermöglichen, ist das bekannte Gerät der eingangs genannten Art so ausgebildet (vgl. die DE-OS 22 52 096), daß es von der Seite her an die zu verbindenden Bewehrungsstäbe so herangeschoben werden kann, daß das Widerlager und die Halterung für die Ziehdüse die Bewehrungsstäbe teilweise umfassen. Zum Erreichen einer zentrischen Zugkraft auf die Ziehdüse ist es erforderlich, die drei Zylinder-Kolben-Einheiten symmetrisch um die Verbindungsstelle herum anzuordnen. Da die Kolben und Zylinder ausreichend stabil und damit relativ dick sein müssen, ist ein ziemlich großer Platzbedarf notwendig. Das bekannte Gerät ist daher nur dann einsetzbar, wenn der Abstand zu benachbarten Bewehrungsstäben sehr groß ist. Ein weiterer Nachteil des bekannten Gerätes besteht darin, daß die Ziehdüse nicht bis zu dem dem Widerlager benachbarten Muffenende wirken kann, so daß ein nicht verformter Muffenabschnitt verbleibt.Now it is necessary in construction to be able to make these connections of reinforcing bars not only at all, but above all on the construction site itself. For example, it is often necessary to connect reinforcement bars to the reinforcing bars that have already been concreted in from the concrete. To make this possible, the known device of the type mentioned is designed (see. DE-OS 22 52 096) that it can be pushed from the side to the reinforcing bars to be connected so that the abutment and the holder for the drawing nozzle partially enclose the reinforcing bars. To achieve a central pulling force on the drawing nozzle, it is necessary to arrange the three cylinder-piston units symmetrically around the connection point. Since the pistons and cylinders have to be sufficiently stable and therefore relatively thick, a fairly large amount of space is required. The known device can therefore only be used if the distance to adjacent reinforcement bars is very large. Another disadvantage of the known device is that the drawing nozzle cannot act as far as the sleeve end adjacent to the abutment, so that a non-deformed sleeve section remains.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Gerät der eingangs angegebenen Art zu schaffen, das es ermöglicht, Preßmuffenstöße auch dann ausführen zu können, wenn die zu verbindenden Bewehrungsstäbe in engen Abständen voneinander angeordnet sind und die Muffe von einer Seite her kontinuierlich auf ihre volle Länge zusammenzupressen.The invention is therefore based on the object to provide a device of the type mentioned, which makes it possible to carry out press joints even when the reinforcing bars to be connected are arranged at close distances from one another and the sleeve continuously from one side to its full Length together.

Nach der Erfindung wird diese Aufgabe dadurch gelöst, daß eine oder mehrere in Zugrichtung der Ziehdüse wirkende Zylinder-Kolben-Einheit(en) exzentrisch zu der Ziehdüse angeordnet ist (sind), daß auf der der Ziehdüse gegenüberliegenden Seite der zuletzt genannten Zylinder-Kolben-Einheit(en) mindestens eine weitere Zylinder-Kolben-Einheit mit einem Gegenlaufzylinder angeordnet ist, die in umgekehrter Richtung mit Druckmittel beaufschlagbar ist, daß das Widerlager zum Abstützen der Muffe als Konsole und die Halterung für die Ziehdüse als Kragteil ausgebildet sind und daß die Konsole eine zweiteilige Stützhülse aufweist, die zwischen der Konsole und der benachbarten Stirnfläche der Muffe angeordnet ist und deren Abmessungen so gewählt sind, daß die Ziehdüse bis an das in diesem Bereich befindliche Ende der Muffe bewegbar ist.According to the invention, this object is achieved in that one or more cylinder-piston unit (s) acting in the pulling direction of the drawing nozzle is (are) eccentric to the drawing nozzle, that on the side opposite the drawing nozzle the latter cylinder-piston Unit (s) at least one further cylinder-piston unit is arranged with a counter-rotating cylinder, which can be acted upon in the opposite direction with pressure medium, that the abutment for supporting the sleeve is designed as a bracket and the holder for the drawing nozzle as a cantilever part and that the bracket has a two-part support sleeve which is arranged between the bracket and the adjacent end face of the sleeve and the dimensions of which are selected such that the drawing nozzle can be moved up to the end of the sleeve located in this area.

Die zweiteilige Stützhülse besteht zweckmäßig aus zwei schalenförmigen, den Bewehrungsstab umschließenden Teilen, die am oberen Ende jeweils eine flanschartige Verbreiterung aufweisen. Die beiden Teile der Stützhülse mit den flanschartigen Verbreiterungen können an der Konsole um parallel zur Achse der Ziehdüse verlaufende Achsen schwenkbar angeschlossen sein, wobei Federn vorgesehen sein können, um die beiden Teile der Stützhülse in geschlossener Lage zu halten.The two-part support sleeve expediently consists of two shell-shaped parts surrounding the reinforcing bar, each of which has a flange-like widening at the upper end. The two parts of the support sleeve with the flange-like widenings can be pivotally connected to the console about axes running parallel to the axis of the drawing nozzle, wherein springs can be provided in order to hold the two parts of the support sleeve in the closed position.

Als Halterung zur Aufnahme der Ziehdüse an dem bewegbaren Geräteteil ist zweckmäßig eine Grundplatte vorgesehen und ist die Ziehdüse in eine den Längsschlitz verbreiternde Ausnehmung in dieser Grundplatte eingesetzt.A base plate is expediently provided as a holder for receiving the drawing nozzle on the movable device part and the drawing nozzle is inserted into a recess in this base plate that widens the longitudinal slot.

Die Ziehdüse besteht zweckmäßig aus mindestens zwei ringförmigen Teilen, die einander zu einem geschlossenen Ringquerschnitt ergänzen, vorzugsweise aus zwei Teilen unterschiedlicher Bodenlänge, von denen das kürzere, innere Teil fest, aber lösbar, z. B. durch Schrauben, mit der Grundplatte verbunden und das längere äußere Teil lose in die Ausnehmung in der Grundplatte einsetzbar ist. Zweckmäßig weist das äußere Teil an der Unterseite eine Schulter auf, mit der es sich gegen entsprechende Widerlager an den vorderen Enden der Grundplatte abstützt.The drawing nozzle advantageously consists of at least two ring-shaped parts which complement one another to form a closed ring cross-section, preferably of two parts of different base length, of which the shorter, inner part is firm but detachable, e.g. B. connected by screws to the base plate and the longer outer part can be inserted loosely into the recess in the base plate. The outer part expediently has a shoulder on the underside with which it is supported against corresponding abutments at the front ends of the base plate.

Die Zylinderräume der Zylinder-Kolben-Einheiten können in einem einheitlichen, das obere Maschinenteil bildenden Zylindergehäuse vorgesehen sein. Sie können aber auch je für sich auf eine Grundplatte aufgesetzt und mit dieser sowie mit einer oberen Deckplatte verbunden, z. B. verschraubt, sein. Dabei ist zweckmäßig in der Wirkungsebene der Kraftresultierenden ein Versteifungsblech angeordnet, das sowohl mit der Grundplatte, wie auch mit der Deckplatte fest verbunden, z. B. verschweißt oder verschraubt, ist.The cylinder spaces of the cylinder-piston units can be provided in a uniform cylinder housing forming the upper machine part. But you can also each put on a base plate and connected to this and an upper cover plate, for. B. screwed. A stiffening plate is expediently arranged in the plane of action of the resultant force, which is firmly connected to both the base plate and the cover plate, for. B. welded or screwed.

Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert. Es zeigtThe invention is explained below with reference to the embodiments shown in the drawing. It shows

Fig. 1 einen Längsschnitt durch eine erste Ausführungsform eines Gerätes nach der Erfindung entlang der Linie I-I in Fig. 2,

  • Fig. 2 einen Querschnitt entlang der Linie 11-11 der Fig. 1,
  • Fig. 2a einen entsprechenden Querschnitt durch eine andere Ausführungsform des Gerätes,
  • Fig. 3 einen Querschnitt entlang der Linie 111-111 der Fig. 1,
  • Fig. 3a und 3b Detaildarstellungen verschiedener Ausbildungen der Ziehdüse,
  • Fig. 4 eine Frontansicht entlang der Linie IV-IV in Fig. 1,
  • Fig. 5 die Untersicht des oberen Geräteteils entlang der Linie V-V in Fig. 1,
  • Fig. 6 eine Seitenansicht des unteren Bereiches des oberen Geräteteils,
  • Fig.7 einen der Fig. 1 entsprechenden Längsschnitt durch das obere Geräteteil einer anderen Ausführungsform,
  • Fig. 8 einen Querschnitt entlang der Linie VIII-VIII in Fig. 7,
  • Fig. 9 einen Längsschnitt durch eine andere Ausführungsform der Grundplatte des unteren Geräteteils und
  • Fig. 10 eine Draufsicht auf die Grundplatte nach Fig. 9.
Fig. 1 shows a longitudinal section through a first embodiment of a device according to the invention along the line II in Fig. 2,
  • 2 shows a cross section along the line 11-11 of FIG. 1,
  • 2a shows a corresponding cross section through another embodiment of the device,
  • 3 shows a cross section along the line 111-111 of FIG. 1,
  • 3a and 3b detailed representations of different designs of the drawing nozzle,
  • 4 shows a front view along the line IV-IV in FIG. 1,
  • 5 is the bottom view of the upper part of the device along the line VV in Fig. 1,
  • 6 is a side view of the lower area of the upper part of the device,
  • 7 shows a longitudinal section corresponding to FIG. 1 through the upper device part of another embodiment,
  • 8 shows a cross section along the line VIII-VIII in FIG. 7,
  • Fig. 9 shows a longitudinal section through another embodiment of the base plate of the lower part of the device and
  • 10 is a plan view of the base plate of FIG .. 9

Das Gerät 1, wie es in den Fig. 1 bis 4 dargestellt ist, besteht im wesentlichen aus einem oberen Geräteteil 2 und einem unteren Geräteteil 3, die durch Zylinder-Kolben-Einheiten miteinander verbunden und mittels dieser gegeneinander bewegbar sind.The device 1, as shown in FIGS. 1 to 4, essentially consists of an upper device part 2 and a lower device part 3, which are connected to one another by cylinder-piston units and can be moved relative to one another by means of these.

Das obere Geräteteil 2, das während des Betriebs feststeht, umfaßt ein einteiliges Zylindergehäuse 4, in dem durch Bohrungen ein Zylinderraum 5 für einen Zugzylinder 6 und ein Zylinderraum 7 für einen Gegenlaufzylinder 8 angeordnet sind. In dem Zylinderraum 5 ist ein Kolben 9 mit einer Kolbenstange 10 bewegbar; im Zylinderraum 7 läuft eine Kolbenstange 11, die so ausgebildet ist, daß der in den Zylinderraum 7 eingreifende Teil als Kolben wirkt.The upper device part 2, which is fixed during operation, comprises a one-piece cylinder housing 4, in which a cylinder space 5 for a pull cylinder 6 and a cylinder space 7 for a counter-rotating cylinder 8 are arranged through bores. A piston 9 with a piston rod 10 can be moved in the cylinder chamber 5; A piston rod 11 runs in the cylinder space 7 and is designed such that the part engaging in the cylinder space 7 acts as a piston.

Am Zylindergehäuse 4 ist eine gabelförmig ausgebildete Konsole 12 angeformt (vgl. auch Fig. 2), mit der das Gerät 1 jeweils einen der zu verbindenden Bewehrungsstäbe 13, 14 umschließend, in die Zwischenräume zwischen - gestrichelt angedeuteten - benachbarten Bewehrungsstäben eingeschoben werden kann. Über die Bewehrungsstäbe 13, 14 ist im Stoßbereich eine Muffe 15 geschoben, die mittels einer Ziehdüse 35 durch radiale Verformung zum festen Anliegen an den mit Oberflächenprofilierungen versehenen Bewehrungsstäben 13, 14 gebracht werden soll.A fork-shaped bracket 12 is formed on the cylinder housing 4 (cf. also FIG. 2), with which the device 1 can enclose one of the reinforcement bars 13, 14 to be connected, into the spaces between - indicated by dashed lines - adjacent reinforcement bars. A sleeve 15 is pushed over the reinforcing bars 13, 14 in the joint area, which is to be brought into firm contact with the reinforcing bars 13, 14 provided with surface profiles by means of a drawing nozzle 35 by radial deformation.

Mit der Konsole 12 steht eine Stützhülse 16 in Wirkverbindung. Die Stützhülse 16 umfaßt ein schlankes unteres Teil 17, mit dem sie sich am oberen Ende der Muffe 15 abstützt, und eine flanschartige Verbreiterung 18, mit der sie kraft- und formschlüssig an der Konsole 12 festgelegt ist. Die gesamte Stützhülse 16 besteht ihrerseits aus zwei schalenförmigen Teilen 17', 17" mit jeweils einer flanschartigen Verbreiterung 18', 18" (Fig. 5), die an der Konsole 12 um die Achsen von Bolzen 19 in Richtung der Pfeile 20 schwenkbar befestigt sind. Die Schwenkbewegung erfolgt gegen die Wirkung von flachen Federn 21, die seitlich außen an der Konsole 12 mittels Druckstücken 22 und Schrauben 23 festgelegt sind.A support sleeve 16 is operatively connected to the console 12. The support sleeve 16 comprises a slender lower part 17, with which it is supported at the upper end of the sleeve 15, and a flange-like widening 18, with which it is fixed to the bracket 12 in a non-positive and positive manner. The entire support sleeve 16 in turn consists of two shell-shaped parts 17 ', 17 ", each with a flange-like widening 18', 18" (Fig. 5), which are pivotally attached to the bracket 12 about the axes of bolts 19 in the direction of arrows 20 . The pivoting movement takes place against the action of flat springs 21, which are fixed laterally on the outside of the bracket 12 by means of pressure pieces 22 and screws 23.

Die flanschartigen Verbreiterungen 18' und 18" der Stützhülse 16 tragen an der Stirnseite Abschrägungen 24. Diese Abschrägungen 24 dienen als Gleitflächen, wenn das Gerät 1 mit der Konsole 12 oberhalb einer Muffe 15 über einen Bewehrungsstab 13 geschoben wird, wobei die beiden schalenförmigen Teile der Stützhülse 16 sich öffnen und den Stab 13 zwischen sich einschließlich wieder schließen. In der geschlossenen Stellung können die beiden Teile der Stützhülse 16 durch Justierbolzen 15 (Fig. 6) verriegelt werden, die in Bohrungen 26 in der Konsole 12 geführt sind und in Bohrungen 27 in den flanschartigen Verbreiterungen 18' bzw. 18" eindringen. An der Unterseite der Konsole 12 ist eine Platte 28 als Verschleißteil angeschraubt.The flange-like widenings 18 'and 18 "of the support sleeve 16 have bevels 24 on the end face. These bevels 24 serve as sliding surfaces when the device 1 with the bracket 12 is pushed above a sleeve 15 over a reinforcing bar 13, the two shell-shaped parts of the The support sleeve 16 opens and closes the rod 13 between them again, and in the closed position the two parts of the support sleeve 16 can be locked by adjusting bolts 15 (FIG. 6) which are guided in bores 26 in the bracket 12 and in bores 27 penetrate into the flange-like widenings 18 'or 18 ". A plate 28 is screwed onto the underside of the console 12 as a wearing part.

In Fig. 2a ist nur im Querschnitt eine zweite Ausführungsform des Gerätes gemäß Fig. 1 dargestellt, bei der das feststehende Geräteteil 2a anstelle eines Zugzylinders zwei Zugzylinder 6a und 6b aufweist, die nebeneinander und symmetrisch zur Längsachse der Vorrichtung angeordnet sind. Den beiden Zugzylindern 6a und 6b entsprechen Zylinderräume 5a und 5b; der Gegenlaufzylinder 8a besitzt wie im Beispiel der Fig. 2 einen Zylinderraum 7a. Durch Verteilung der für die Verformung der Muffe erforderlichen Zugkraft auf zwei parallel wirkende Zylinder verringert sich der Durchmesser des einzelnen Zylinders und somit die Exzentrizität des Kraftangriffs.In Fig. 2a only a cross-section of a second embodiment of the device according to Fig. 1 is shown, in which the fixed device part 2a has two pull cylinders 6a and 6b instead of a pull cylinder, which are arranged side by side and symmetrically to the longitudinal axis of the device. The two pull cylinders 6a and 6b correspond to cylinder spaces 5a and 5b; the counter-running cylinder 8a has a cylinder space 7a, as in the example in FIG. 2. By distributing the tensile force required for the deformation of the sleeve over two cylinders acting in parallel, the diameter of the individual cylinder is reduced and thus the eccentricity of the force application.

Das untere Geräteteil 3 besteht bei der Ausführungsform gemäß der Fig. 1 aus einer Grundplatte 29 mit Sacklochbohrungen 30, in welche die Kolbenstangen 10 bzw. 11 von Zugzylinder 6 bzw. Gegenlaufzylinder 8 eingesetzt und durch Stirnschrauben 31 befestigt sind. Die Grundplatte 29 ist in ihrem ein Kragteil bildenden Bereich 32 verbreitert (Fig. 3). Das vordere Ende 33 ist durch einen Längsschlitz 34 gabelförmig gestaltet und dient der Halterung der Ziehdüse 35.In the embodiment according to FIG. 1, the lower device part 3 consists of a base plate 29 with blind bores 30, into which the piston rods 10 and 11 of the pull cylinder 6 or counter-cylinder 8 are inserted and fastened by means of end screws 31. The base plate 29 is widened in its region 32 forming a cantilever part (FIG. 3). The front end 33 is fork-shaped through a longitudinal slot 34 and serves to hold the drawing nozzle 35.

Die Ziehdüse 35 besteht aus zwei kreisringförmigen Teilen, nämlich einem kürzeren, inneren Teil 36a und einem längeren, äußeren Teil 36b, die in eine Ausnehmung 66 in der Grundplatte 29 eingesetzt sind. Die durch das innere, an der Grundplatte 29 befestigte, z. B. angeschraubte Teil 36a zu verschließende Öffnung in dem äußeren Teil 36b muß so groß sein, daß das Gerät von der Seite her auf die zu verbindenden Bewehrungsstäbe aufgeschoben werden kann. Das äußere Teil 36b wird danach in die Vertiefung 66 eingesetzt (Fig. 3a). Die Ziehdüse kann aber auch aus zwei Hälften 37a, 37b bestehen, die beide herausnehmbar und jeweils beim Ansetzen der Vorrichtung einsetzbar sind (Fig. 3b).The drawing nozzle 35 consists of two annular parts, namely a shorter, inner part 36a and a longer, outer part 36b, which are inserted into a recess 66 in the base plate 29. The through the inner, attached to the base plate 29, for. B. screwed part 36a to be closed opening in the outer part 36b must be so large that the device can be pushed from the side onto the reinforcing bars to be connected. The outer part 36b is then inserted into the recess 66 (FIG. 3a). However, the drawing nozzle can also consist of two halves 37a, 37b, both of which are removable and can each be inserted when the device is attached (FIG. 3b).

Ein weiteres Ausführungsbeispiel für die Ausbildung der Grundplatte ist in den Fig. 9 und 10 dargestellt, von denen Fig. 9 einen Längsschnitt durch eine solche Grundplatte und Fig. 10 eine Draufsicht darstellen.A further exemplary embodiment for the design of the base plate is shown in FIGS. 9 and 10, of which FIG. 9 shows a longitudinal section through such a base plate and FIG. 10 shows a plan view represent.

Die Grundplatte 29' besitzt ebenfalls einen von ihrem vorderen Ende 33' ausgehenden Längsschlitz 34' mit einer Vertiefung 66, in welche die Ziehdüse 35" eingesetzt ist. Die Ziehdüse 35" weist die Form eines Kreisringes auf und besteht aus einem kürzeren inneren Teil 36a', das z. B. mittels einer Schraube fest an der Grundplatte 29' befestigt ist, und aus einem entsprechend längeren äußeren Teil 36b', das wiederum nur lose in die Ausnehmung 66 eingesetzt ist.The base plate 29 'also has a longitudinal slot 34' extending from its front end 33 'with a recess 66 into which the drawing nozzle 35 "is inserted. The drawing nozzle 35" has the shape of a circular ring and consists of a shorter inner part 36a' , the Z. B. is fixed by a screw to the base plate 29 ', and from a correspondingly longer outer part 36b', which in turn is only loosely inserted into the recess 66.

Da die ringförmige Ziehdüse 35" bei der plastischen Verformung einer Muffe unverhältnismäßig großen radialen Kräften ausgesetzt ist, die durch das gabelförmige Kragteil der Grundplatte 29' aufgenommen werden müssen, besitzt das längere Teil 36b' der Ziehdüse an seiner Unterseite eine Schulter 64, die sich im eingesetzten Zustand gegen eine entsprechende Schulter 65 am vorderen Ende 33' der Grundplatte 29' abstützt (Fig. 9). Dadurch wird gewährleistet, daß die in der Ziehdüse auftretenden Radialkräfte im Bereich dieser Schultern 64 bzw. 65 nur als Normalkräfte auf die Grundplatte 29' abgegeben werden, die senkrecht auf die Schultern wirken, so daß die beiden Arme der Ziehdüse 29'nicht auseinandergespreizt, sondern nur in Längsrichtung beansprucht werden.Since the ring-shaped drawing nozzle 35 "is subjected to disproportionately large radial forces during the plastic deformation of a sleeve, which have to be absorbed by the fork-shaped cantilever part of the base plate 29 ', the longer part 36b' of the drawing nozzle has a shoulder 64 on its underside, which is in the in the inserted state against a corresponding shoulder 65 at the front end 33 'of the base plate 29' (FIG. 9), which ensures that the radial forces occurring in the drawing nozzle in the area of these shoulders 64 and 65 only act as normal forces on the base plate 29 ' are released, which act vertically on the shoulders so that the two arms of the drawing nozzle 29 'are not spread apart, but are only stressed in the longitudinal direction.

Zur Herstellung eines Preßmuffenstoßes wird nach dem Ausrichten der Bewehrungsstäbe 13 und 14 und dem Ansetzen der Muffe 15 das Gerät 1 in Stellung gebracht. Hierzu ist es mit einem Tragegriff 38 versehen (Fig. 1 und 4). Das Gerät wird so angesetzt, daß die Konsole 12 sich oberhalb der Muffe 15 in einer solchen Lage befindet, daß die beiden schalenförmigen Teile 17', 18' und 17", 18" der Stützhülse 16 die Muffe 15 umfassen und sich deshalb nicht schließen können. Das Gerät wird in dieser Lage dadurch gehalten, daß sich die Platte 28 (Fig. 6) oben auf die Muffe 15 auflegt. Die Muffe 15 kann in der vorgesehenen Lage beispielsweise dadurch gehalten werden, daß unmittelbar unterhalb der Muffe Rödeldraht um den Bewehrungsstab 14 geschlungen wird. In dieser Lage bleibt im Bereich des unteren Geräteteils 3 ausreichend Platz zur Verfügung, um das ringförmige Teil 36 der Ziehdüse 35 einsetzen zu können. Sobald die Ziehdüse 35 vollständig ist, wird das Gerät 1 etwas nach oben angehoben; dadurch geraten die beiden schalenförmigen Teile 17', 18' und 17", 18" der Stützhülse 16 aus dem Bereich der Muffe 15 heraus, schließen sich um den Bewehrungsstab 13 und können nun in der aus Fig. 1 ersichtlichen Weise oben auf die Muffe 15 aufgesetzt werden.To produce a press socket joint, the device 1 is brought into position after aligning the reinforcing bars 13 and 14 and attaching the socket 15. For this purpose, it is provided with a handle 38 (FIGS. 1 and 4). The device is positioned so that the console 12 is above the sleeve 15 in such a position that the two shell-shaped parts 17 ', 18' and 17 ", 18" of the support sleeve 16 enclose the sleeve 15 and therefore cannot close . The device is held in this position in that the plate 28 (FIG. 6) lies on top of the sleeve 15. The sleeve 15 can be held in the intended position, for example, by looping wire wire around the reinforcing bar 14 immediately below the sleeve. In this position, sufficient space remains available in the area of the lower device part 3 in order to be able to use the annular part 36 of the drawing nozzle 35. As soon as the drawing nozzle 35 is complete, the device 1 is raised slightly; As a result, the two shell-shaped parts 17 ', 18' and 17 ", 18" of the support sleeve 16 come out of the area of the sleeve 15, close around the reinforcing bar 13 and can now be seen on top of the sleeve 15 in the manner shown in FIG. 1 be put on.

Durch eine Druckmittelleitung 39 wird nunmehr Druckmittel in Richtung des Pfeils 40 (Fig. 1) zugeführt, das über den Zylinderraum 7 die Druckfläche 41 der Kolbenstange 11 des Gegenlaufzylinders 8 und durch Einleitung in den unteren Teil des Zylinderraumes 5 den Kolben 9 des Zugzylinders 6 von unten her beaufschlagt. Auf diese Weise wird neben der über den Zugzylinder 6 ausgeübten Zugkraft auf den Gegenlaufzylinder 8 eine Druckkraft ausgeübt.A pressure medium line 39 now supplies pressure medium in the direction of the arrow 40 (FIG. 1) which, via the cylinder space 7, the pressure surface 41 of the piston rod 11 of the counter-rotating cylinder 8 and, by introduction into the lower part of the cylinder space 5, the piston 9 of the pull cylinder 6 from acted on below. In this way, in addition to the tensile force exerted on the pull cylinder 6, a pressure force is exerted on the counter-rotating cylinder 8.

Das Verhältnis der Druckfläche des Zugzylinders 6 zu derjenigen des Gegenlaufzylinders 8 muß dabei genau so groß sein wie das Verhältnis des Abstandes b der Achse des Zugzylinders 6 von der Achse der Bewehrungsstäbe 13, 14 bzw. der Ziehdüse 35 zu dem Abstand a der Achse des Gegenlaufzylinders 8 zur Achse der Bewehrungsstäbe 13, 14. Das durch den Gegenlaufzylinder 8 ausgelöste Biegemoment kompensiert dabei das Biegemoment, das bei der Wirkung des Zugzylinders entsteht, so daß die Grundplatte 29 mit der Ziehdüse 35 langsam und gleichmäßig über die Muffe 15 gezogen wird, die sich dabei plastisch verformt.The ratio of the pressure surface of the pull cylinder 6 to that of the counter-cylinder 8 must be exactly as large as the ratio of the distance b of the axis of the pull cylinder 6 from the axis of the reinforcing bars 13, 14 or the drawing nozzle 35 to the distance a of the axis of the counter-cylinder 8 to the axis of the reinforcing bars 13, 14. The bending moment triggered by the counter-rotating cylinder 8 compensates for the bending moment which arises when the pulling cylinder acts, so that the base plate 29 with the drawing nozzle 35 is slowly and evenly pulled over the sleeve 15, which is plastically deformed.

Neben der massiven Ausführung des Zylindergehäuses 4 ist es auch möglich, dieses in aufgelöster Bauweise auszuführen. Eine solche Ausführungsform ist in den Fig.7 und 8 dargestellt. Das obere Geräteteil 2b umfaßt hier einen Zugzylinder 42 und einen Gegenlaufzylinder 43 als einzelne Aggregate, die durch eine Grundplatte 44 verbunden sind. An den oberen Enden sind die Zylinder 42 und 43 durch eine Deckplatte 45 zusammengefaßt und verbunden. Die Verbindungen sind jeweils durch Schrauben 46 hergestellt.In addition to the solid design of the cylinder housing 4, it is also possible to carry it out in a separate construction. Such an embodiment is shown in FIGS. 7 and 8. The upper device part 2b here comprises a pull cylinder 42 and a counter-rotating cylinder 43 as individual units which are connected by a base plate 44. At the upper ends, the cylinders 42 and 43 are combined and connected by a cover plate 45. The connections are each made by screws 46.

Der gegenseitigen Aussteifung dient ein Versteifungsblech 47, das einerseits über eine Lasche 48 mit dem Zylinder 42 und über seitliche Flügel 49 mit dem Gegenlaufzylinder 43 verbunden ist. Im übrigen, insbesondere auch im Hinblick auf das untere Geräteteil ist dieses Gerät in gleicher Weise ausgebildet wie dasjenige, das im Zusammenhang mit den Fig. 1 bis 4 beschrieben wurde.The mutual stiffening is provided by a stiffening plate 47, which is connected on the one hand to the cylinder 42 via a lug 48 and to the counter-rotating cylinder 43 via lateral wings 49. Otherwise, in particular also with regard to the lower part of the device, this device is designed in the same way as that which was described in connection with FIGS. 1 to 4.

Claims (14)

1. An apparatus for connecting two butt-jointed reinforcing bars provided with surface profiling by a sleeve pressed on by means of a forming die, which has a stationary apparatus part with an abutment for supporting the sleeve and an apparatus part which is movable relative to the stationary apparatus part parallel to the longitudinal direction of the reinforcing bars and which has a mounting for accommodating the forming die, wherein a plurality of cylinder-piston assemblies are disposed between both apparatus parts for applying a concentric drawing force to the forming die and both the abutment and the movable mounting for accommodating the forming die are provided with a respective slot extending from the front end, the width of which corresponds at least to the diameter of the associated reinforcing bar, characterised in that one or more cylinder-piston assembly(ies) acting in the drawing direction of the forming die (35) is (are) disposed eccentrically to the forming die (35), in that on that side of the lastmentioned cylinder-piston assembly(ies) lying opposed to the forming die
(35) there is disposed at least one further cylinder-piston assembly which has an opposed cylinder (8, 8a, 43) and which can be acted upon by pressure medium in the opposite direction, in that the abutment for supporting the sleeve (15) is designed as a bracket (12) and the mounting for the forming die (35) is designed as a cantilever part, and in that the bracket (12) has a two-part supporting socket
(16) which is disposed between the bracket (12) and the adjacent end face of the sleeve (15) and of which the dimensions are so chosen that the forming die (35) is movable up to the end of the sleeve
(15) situated in this zone.
2. An apparatus according to Claim 1, characterised in that the two-part supporting socket (16) comprises two shell-like parts (17', 17") which surround the reinforcing bar (13 and 14) and which at the top end have a respective flange-type widened portion (18', 18").
3. An apparatus according to Claim 2, characterised in that the two parts (17', 17") of the supporting socket (16) with the flange-type widened portions (18', 18") are connected pivotably to the bracket (12) about axes extending parallel to the axis of the forming die (35).
4. An apparatus according to Claim 3, characterised in that springs (21) are provided to retain the two parts (17,17") of the supporting socket (16) in a closed position.
5. An apparatus according to any of Claims 1 to 4, characterised in that a base plate (29, 29') is provided as mounting for the forming die (35) on the movable lower apparatus part (3) and the forming die (35) is inserted into a recess (66) in the base plate (29,29') widening the longitudinal slot (34,34').
6. An apparatus according to Claim 5, characterised in that the forming die (35, 35', 35") comprises at least two annular parts (36a, 36b or 36a', 36b' or 37a, 37b) which complement one another to form a closed annular cross-section.
7, An apparatus according to Claim 6, characterised in that the forming die (35, 35") comprises two parts of different arc length, of which the shorter, inner part (36, 36a') is connected securely but detachably, e. g. by bolts, to the base plate (29, 29') and the longer, outer part (36b, 36b') can be inserted loosely into the recess (66) in the base plate (29, 29').
8. An apparatus according to Claim 7, characterised in that on its underside the outer part (36b') has a shoulder (64) with which it bears against corresponding abutments (65) on the front ends (33') of the base plate (29') (Fig. 9 and 10).
9. An apparatus according to any of Claims 1 to 8, characterised in that the cylinder chambers (5 or 5a, 5b and 7 or 7a) of all the cylinder-piston assemblies are provided in a uniform cylindrical housing (4) forming the stationary apparatus part (2, 2a).
10. An apparatus according to any of Claims 1 to 8, characterised in that all the cylinder-piston assemblies are each mounted independently on a base plate (44) and are connected, e. g. bolted, thereto and to an upper cover plate (45).
11. An apparatus according to Claim 10, characterised in that a stiffening plate (47) is disposed in the plane of action of the force resultants and is securely connected, e. g. welded or bolted, both to the base plate (44) and to the cover plate (45).
EP82101886A 1981-03-13 1982-03-10 Apparatus for connecting two abutting reinforcing bar ends by a sleeve Expired EP0060498B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82101886T ATE16153T1 (en) 1981-03-13 1982-03-10 DEVICE FOR CONNECTING TWO BUT JOINT REBARS USING A COUPLING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3109687 1981-03-13
DE3109687A DE3109687C2 (en) 1981-03-13 1981-03-13 Device for connecting two butt joint reinforcing bars by means of a socket

Publications (3)

Publication Number Publication Date
EP0060498A2 EP0060498A2 (en) 1982-09-22
EP0060498A3 EP0060498A3 (en) 1983-06-22
EP0060498B1 true EP0060498B1 (en) 1985-10-23

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EP82101886A Expired EP0060498B1 (en) 1981-03-13 1982-03-10 Apparatus for connecting two abutting reinforcing bar ends by a sleeve

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US (1) US4559691A (en)
EP (1) EP0060498B1 (en)
JP (1) JPS57160526A (en)
AT (1) ATE16153T1 (en)
CA (1) CA1186139A (en)
DE (1) DE3109687C2 (en)
ES (1) ES8303595A1 (en)

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US4019232A (en) * 1974-12-04 1977-04-26 Daido Seiko Kabushiki Kaisha Ram type steel bar coupling apparatus
FI63875C (en) * 1975-08-04 1983-09-12 Ccl Systems Ltd PRESS MED VILKEN EN MATALLHYLSA ANBRINGAS PAO EN ARMERINGSSTAONG ELLER VAJER
ZA762084B (en) * 1976-04-07 1978-02-22 Zeitgeist Ag Improved method and apparatus for compressing sleeves onto structural rods
CH639740A5 (en) * 1979-07-18 1983-11-30 Fischer Ag Georg DEVICE FOR PRODUCING A PIPE CONNECTION.
US4285228A (en) * 1979-08-20 1981-08-25 Anchor Coupling Co., Inc. Crimping machine for hose assembly
FR2473917A1 (en) * 1980-01-21 1981-07-24 Ulmic Sa METHOD AND APPARATUS FOR THE MANUFACTURING, BY WIRING, OF A PIECE HAVING A HOLLOW PART IN ITS PERIPHERAL SURFACE

Also Published As

Publication number Publication date
DE3109687A1 (en) 1982-09-23
ES510373A0 (en) 1983-02-01
US4559691A (en) 1985-12-24
ES8303595A1 (en) 1983-02-01
CA1186139A (en) 1985-04-30
ATE16153T1 (en) 1985-11-15
JPS57160526A (en) 1982-10-02
JPS6137013B2 (en) 1986-08-21
DE3109687C2 (en) 1985-06-27
EP0060498A2 (en) 1982-09-22
EP0060498A3 (en) 1983-06-22

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