EP0677365B1 - Device for maintaining a dowel in a shuttering when making prestressed concrete railway sleepers - Google Patents

Device for maintaining a dowel in a shuttering when making prestressed concrete railway sleepers Download PDF

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Publication number
EP0677365B1
EP0677365B1 EP95103960A EP95103960A EP0677365B1 EP 0677365 B1 EP0677365 B1 EP 0677365B1 EP 95103960 A EP95103960 A EP 95103960A EP 95103960 A EP95103960 A EP 95103960A EP 0677365 B1 EP0677365 B1 EP 0677365B1
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EP
European Patent Office
Prior art keywords
holding device
cup
shuttering
dowel
connecting means
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 - Lifetime
Application number
EP95103960A
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German (de)
French (fr)
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EP0677365A1 (en
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.)
Rail One GmbH
Original Assignee
Pfleiderer Infrastrukturtechnick GmbH and Co KG
Pfleiderer Verkehrstechnik GmbH and Co KG
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Publication date
Application filed by Pfleiderer Infrastrukturtechnick GmbH and Co KG, Pfleiderer Verkehrstechnik GmbH and Co KG filed Critical Pfleiderer Infrastrukturtechnick GmbH and Co KG
Publication of EP0677365A1 publication Critical patent/EP0677365A1/en
Application granted granted Critical
Publication of EP0677365B1 publication Critical patent/EP0677365B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles

Definitions

  • the invention relates to a holding device as in The preamble of claim 1 is described.
  • the known holding device must be in the formwork by hand be screwed in. It already shows part 11 elastic material on a steel bolt 1, with which the holding device is fastened in the formwork is enclosing. With the elastic part is achieved that the finished threshold is lifted out of the formwork can, and thereby the holding device from the Screw anchor releases.
  • the elastic part of the known holding device is made Made of solid material with threads in the screw dowel is turned. It continues pulling out the holding device from the dowel when lifting the concrete threshold there is still considerable resistance to the formwork.
  • the known holding device is in threshold production cannot be used in the fitted bed because the sleepers are there in the course of the manufacturing process in the formwork (the The fitted bed).
  • the well-known in the longitudinal axis of the Rigid fixtures would be one Obstruct displacement of the threshold and to Damage to the threshold.
  • the known holding device is in a compliant cup-shaped part on which the screw dowel can be detached is screwable, and an independent, if necessary shearable fastening means, for example a Rivet, divided for fixation in the formwork.
  • the pin is useful with two sections educated.
  • the section inside the screw anchor runs has cylindrical shape that over the dowel part conical up to the threshold contact area Shape up.
  • the incline of the cone is formed.
  • the diameter of the cone tapers from the threshold towards the underside of the threshold, when removed from the Installation condition on the upper side of the threshold the diameter of the cone tapers towards this side there.
  • the holding device 3 On the base plate of a threshold formwork 1 is one Holding device 3 by means of a assigned hole 2 in the formwork 1 and 5 in the bottom 4 connecting means 10 passing through the holding device - appropriately a rivet - attached.
  • the holding device 3 has a cup shape. Through the cavity 6 of the cup shape a device can be inserted with which Connecting means 10 for fastening the holding device 3 is settable.
  • the outer surface of the cup is threaded 7 provided, on which a screw plug 19 can be screwed, and has slots 8.
  • the bottom 4 of the Holding device 3 can be hollow against the base plate the formwork 1 may be shaped so that when it is set Lanyard 10 the edge 9 of the bottom close to the Formwork 1 presses. Anchoring the lanyard 10 can be reinforced by a metal disc 11.
  • Pins 12, 14 are in the cavity 4 of the holding device 3 can be used with which one the concrete 16 of the threshold in the full height penetrating cavity 17 in the Threshold production in concrete can be kept free.
  • the one from the bottom opening 20 of the concrete in the threshold 16 concreted screw anchor 19 projecting part 13 or 15 of the pin 12, 14 is conical.
  • the cone 12 has a conical part 13 with a according to FIG the piercing opening 20 of the screw anchor 19 to the sole surface 18 of the threshold decreasing diameter when he after stripping from the base surface 18 out of the concrete 16 to be knocked out, the pin 14 according to FIG. 4 a conical part 15 with correspondingly increasing Diameter if after stripping from the top the threshold is to be knocked out.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Dowels (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

The retaining device (3) has a cup-shape with an inner space (6) into which a blind rivetting machine is introduced. The base (4) of the cup has a central bore (5) which aligns with a corresponding bore (2) in the shuttering (1), and through which a suitable connecting element (10) is fitted to press the retaining device firmly onto the shuttering. At least one slot running perpendicular to the cup base is formed in the generate surface of the cup, for construction of railway sleeper.

Description

Die Erfindung betrifft eine Haltevorrichtung wie sie im Oberbegriff des Anspruchs 1 beschrieben ist.The invention relates to a holding device as in The preamble of claim 1 is described.

In den Betonkörper von Spannbetonschwellen werden Schraubendübel eingegossen, in die die Halteschrauben für die Schienen eindrehbar sind. Solche Haltevorrichtungen sind gattungsmäßig beispielsweise aus der DE-U-86 20 398.2 bekannt.In the concrete body of prestressed concrete sleepers Poured screw dowels into which the retaining screws for the rails can be screwed in. Such holding devices are generic for example from DE-U-86 20 398.2 known.

Für eine wirtschaftliche Herstellung von Spannbetonschwellen sollen die manuellen Arbeitsschritte soweit wie möglich reduziert werden.For an economical production of Prestressed concrete sleepers are supposed to be the manual work steps be reduced as much as possible.

Die bekannte Haltevorrichtung muß von Hand in die Schalung eingeschraubt werden. Sie weist bereits ein Teil 11 aus elastischem Material auf, das einen stählernen Bolzen 1, mit dem die Haltevorrichtung in der Schalung befestigt wird, umschließt. Mit dem elastischen Teil wird erreicht, daß die fertige Schwelle aus der Schalung gehoben werden kann, und sich dabei die Haltevorrichtung aus dem Schraubdübel löst. The known holding device must be in the formwork by hand be screwed in. It already shows part 11 elastic material on a steel bolt 1, with which the holding device is fastened in the formwork is enclosing. With the elastic part is achieved that the finished threshold is lifted out of the formwork can, and thereby the holding device from the Screw anchor releases.

Der elastische Teil der bekannten Haltevorrichtung besteht aus Vollmaterial, das mit Gewindegängen in den Schraubdübel eingedreht ist. Es setzt dem Ausziehen der Haltevorrichtung aus dem Dübel beim Ausheben der betonierten Schwelle aus der Schalung noch erheblichen Widerstand entgegen.The elastic part of the known holding device is made Made of solid material with threads in the screw dowel is turned. It continues pulling out the holding device from the dowel when lifting the concrete threshold there is still considerable resistance to the formwork.

Die bekannte Haltevorrichtung ist bei Schwellenherstellung im Spannbett nicht verwendbar, weil sich dort die Schwellen im Verlauf des Herstellungsprozesses in der Schalung (dem Spannbett) verschieben. Die bekannten in Längsachse des Spannbetts starren Haltevorrichtungen würden eine Verschiebebewegung der Schwelle behindern und zur Beschädigung der Schwelle führen.The known holding device is in threshold production cannot be used in the fitted bed because the sleepers are there in the course of the manufacturing process in the formwork (the The fitted bed). The well-known in the longitudinal axis of the Rigid fixtures would be one Obstruct displacement of the threshold and to Damage to the threshold.

Aufgabe der Erfindung ist es, die bekannte Haltevorrichtung so weiter zu entwickeln, daß sie

  • keine zeitaufwendigen, meist von unterhalb der Schalung her vorzunehmenden, manuellen Schraubarbeitsgänge erfordert,
  • die Verwendung bei der Herstellung im Spannbett zuläßt und
  • leicht aus dem Schraubendübel lösbar ist.
The object of the invention is to develop the known holding device so that it
  • no time-consuming manual screwing operations, which usually have to be carried out from below the formwork,
  • allows use in manufacturing in the fitted bed and
  • is easy to remove from the screw anchor.

Die Aufgabe wird gelöst durch eine Haltevorrichtung wie sie im kennzeichnenden Teil des Anspruchs 1 beschrieben ist.The task is solved by a holding device like this is described in the characterizing part of claim 1.

Die bekannte Haltevorrichtung wird in einen nachgiebigen becherförmigen Teil, auf den der Schraubdübel lösbar aufschraubbar ist, und ein davon unabhängiges, bedarfsweise abscherbares Befestigungsmittel, beispielsweise einen Niet, zur Fixierung in der Schalung geteilt. The known holding device is in a compliant cup-shaped part on which the screw dowel can be detached is screwable, and an independent, if necessary shearable fastening means, for example a Rivet, divided for fixation in the formwork.

Die erfindungsgemäße Haltevorrichtung erfüllt die gestellte Aufgabe, indem sie

  • die Befestigung mit einem geeigneten Verbindungsmittel von oben durch einen einfachen, hochmechanisierbaren Vorgang zuläßt,
  • für eine dauerhafte Befestigung, beispielsweise in einer Umlaufschalung, widerstandsfähige Stahlniete und ebenso
  • für eine lösbare Befestigung einen dünnen oder vorgekerbten, auf eine definierte Abscherkraft einstellbaren und damit bei einer Bewegung der Schwelle im Spannbett abscherbaren Blindniet in der Schalung verwendbar macht,
  • durch ihre Becherform in umlaufenden Schalungen, wo sie in der Schalung verbleibt, in dem Schraubendübel nachgiebiger und damit leichter lösbar wird, sodaß sich wesentlich längere Standzeiten für die Haltevorrichtung in der Schalung und damit geringere Herstellkosten für die Schwelle ergeben, und
  • den becherförmigen Teil zu schlitzen, damit das den Becherinnenraum im Durchmesser übersteigendes Blindnietsetzgerät eingeführt werden kann.
The holding device according to the invention fulfills the stated task by:
  • allows fastening with a suitable connecting means from above by a simple, highly mechanized process,
  • for permanent fastening, for example in circulating formwork, resistant steel rivets and the like
  • For a releasable fastening, a thin or pre-notched blind rivet that can be adjusted to a defined shear force and thus can be sheared off in the formwork when the threshold moves in the prestressing bed can be used in the formwork,
  • by their cup shape in all-round formwork, where it remains in the formwork, in the screw dowel is more flexible and thus easier to solve, so that there are significantly longer service lives for the holding device in the formwork and thus lower manufacturing costs for the threshold, and
  • to slit the cup-shaped part so that the blind rivet setting tool with a diameter exceeding the cup interior can be inserted.

In Ausgestaltung der Erfindung wird weiterhin vorgeschlagen,

  • einen Zapfen vorzusehen, der in die Becheröffnung einsetzbar ist, mit dem eine die Schwelle in ihrer Höhe durchsetzende Öffnung herstellbar ist, durch die der Schraubdübel-Hohlraum von evtl. eingedrungenem Wasser entleerbar ist.
In an embodiment of the invention, it is also proposed that
  • to provide a spigot which can be inserted into the cup opening and which can be used to produce an opening which passes through the threshold in height and through which the screw-in plug cavity can be emptied of any water which may have penetrated.

Zur Fixierung von Einbauteilen in die Schalung ist es bereits aus der DE-A-3 815 176 bekannt, becherförmige Haltevorrichtungen und als Verbindungsmittel Blindniete zu verwenden. To fix built-in parts in the formwork, it is already known from DE-A-3 815 176 to use cup-shaped holding devices and blind rivets as connecting means.

Der Zapfen wird zweckmäßig mit zwei Abschnitten ausgebildet. Der Abschnitt, der innerhalb des Schraubdübels verläuft, weist zylindrische Form, der über den Dübel bis zur Schwellenaufstandsfläche reichende Teil konische Form auf. Je nach welcher Seite der Zapfen beim Ausschalen der Schwelle ausgeschlagen oder -gezogen werden soll - wird die Neigung des Konus ausgebildet. Bei Entfernung des Zapfens von der in der Schalung obenliegenden Unterseite der Schwelle her verjüngt sich der Durchmesser des Konus nach der Schwellenunterseite hin, bei Entfernung von der im Einbauzustand obenliegenden Seite der Schwelle her verjüngt sich der Durchmesser des Konus nach dieser Seite hin.The pin is useful with two sections educated. The section inside the screw anchor runs, has cylindrical shape that over the dowel part conical up to the threshold contact area Shape up. Depending on which side of the pin when striking the threshold is to be knocked out or pulled the incline of the cone is formed. When removing the Pin from the bottom side in the formwork the diameter of the cone tapers from the threshold towards the underside of the threshold, when removed from the Installation condition on the upper side of the threshold the diameter of the cone tapers towards this side there.

Die Erfindung wird anhand der Figur 1 bis 4 erläutert. Es zeigen:

Fig.1
Beispiel einer nicht erfindungsgemäßen Haltevorrichtung
Fig. 2
Beispiel einer erfindungsgemäßen Haltevorrichtung mit Metallscheibe nach Anspruch 6
Fig.3 + 4
das Beispiel einer Haltevorrichtung für einen bodenseitig offenen Dübel und einen Zapfen mit konischem den Entwässerungskanal zur Sohlfläche in der Schwelle formenden aus dem Dübel herausstehenden Teil.
Fig. 3 mit gegen die Sohlfläche abnehmenden Konusdurchmesser.
Fig. 4 mit gegen die Sohlfläche zunehmenden Konusdurchmesser.
The invention is explained with reference to Figures 1 to 4. Show it:
Fig. 1
Example of a holding device not according to the invention
Fig. 2
Example of a holding device according to the invention with a metal disc according to claim 6
Fig. 3 + 4
the example of a holding device for a dowel which is open at the bottom and a pin with a conical part which projects from the dowel and forms the drainage channel to the sole surface in the threshold.
Fig. 3 with decreasing cone diameter against the sole surface.
Fig. 4 with increasing cone diameter against the bottom surface.

Auf der Bodenplatte einer Schwellenschalung 1 ist eine Haltevorrichtung 3 mittels eines die zugeordneten Bohrung 2 in der Schalung 1 und 5 im Boden 4 der Haltevorrichtung durchsetzenden Verbindungsmittels 10 - zweckmäßig eines Nietes - befestigt. Die Haltevorrichtung 3 weist Becherform auf. Durch den Hohlraum 6 der Becherform ist eine Vorrichtung einführbar, mit der das Verbindungsmittel 10 zur Befestigung der Haltevorrichtung 3 setzbar ist. Die Mantelfläche des Bechers ist mit Gewinde 7 versehen, auf das ein Schraubdübel 19 aufschraubbar ist, und weist Schlitze 8 auf. Der Boden 4 der Haltevorrichtung 3 kann mit Hohllage gegen die Bodenplatte der Schalung 1 geformt sein, so daß er beim Setzen des Verbindungsmittels 10 den Rand 9 des Bodens dicht an die Schalung 1 anpreßt. Die Verankerung des Verbindungsmittels 10 kann durch eine Metallscheibe 11 verstärkt werden.On the base plate of a threshold formwork 1 is one Holding device 3 by means of a assigned hole 2 in the formwork 1 and 5 in the bottom 4 connecting means 10 passing through the holding device - appropriately a rivet - attached. The holding device 3 has a cup shape. Through the cavity 6 of the cup shape a device can be inserted with which Connecting means 10 for fastening the holding device 3 is settable. The outer surface of the cup is threaded 7 provided, on which a screw plug 19 can be screwed, and has slots 8. The bottom 4 of the Holding device 3 can be hollow against the base plate the formwork 1 may be shaped so that when it is set Lanyard 10 the edge 9 of the bottom close to the Formwork 1 presses. Anchoring the lanyard 10 can be reinforced by a metal disc 11.

In den Hohlraum 4 der Haltevorrichtung 3 sind Zapfen 12, 14 einsetzbar, mit denen eine den Beton 16 der Schwelle in der ganzen Höhe durchsetzender Hohlraum 17 bei der Schwellenfertigung im Beton freihaltbar ist. Der aus der bodenseitigen Öffnung 20 des in den Beton 16 der Schwelle einbetonierten Schraubdübels 19 herausstehende Teil 13 bzw. 15 des Zapfens 12, 14 ist konisch ausgebildet. Der Zapfen 12 weist einen konischen Teil 13 mit einem nach Fig. 3 von der Durchstoßöffnung 20 des Schraubdübels 19 zur Sohlfläche 18 der Schwelle hin abnehmenden Durchmesser auf, wenn er nach dem Ausschalen von der Sohlfläche 18 aus aus dem Beton 16 ausgeschlagen werden soll, der Zapfen 14 nach Fig. 4 einen konischen Teil 15 mit entsprechend zunehmenden Durchmesser, wenn er nach dem Ausschalen von der Oberseite der Schwelle her ausgeschlagen werden soll.Pins 12, 14 are in the cavity 4 of the holding device 3 can be used with which one the concrete 16 of the threshold in the full height penetrating cavity 17 in the Threshold production in concrete can be kept free. The one from the bottom opening 20 of the concrete in the threshold 16 concreted screw anchor 19 projecting part 13 or 15 of the pin 12, 14 is conical. The cone 12 has a conical part 13 with a according to FIG the piercing opening 20 of the screw anchor 19 to the sole surface 18 of the threshold decreasing diameter when he after stripping from the base surface 18 out of the concrete 16 to be knocked out, the pin 14 according to FIG. 4 a conical part 15 with correspondingly increasing Diameter if after stripping from the top the threshold is to be knocked out.

Claims (5)

  1. Holding device for fixing a threaded dowel in shuttering for making prestressed concrete sleepers, comprising an upper portion which is made of flexible material and provided with a thread and with which it can be screwed into the threaded dowel and held releasably in the threaded dowel, and comprising means with which it can be fixed in the shuttering, characterised
    in that the holding device (3) is cup-shaped with an inner cavity (6) into which can be introduced a blind rivet setting machine,
    in that the cup bottom (4) comprises a central bore (5) which can be brought into register with a corresponding bore (2) in the shuttering (1) and through which with a suitable tool can be set a suitable connecting means (10) with the aid of which the holding device (3) can be pressed firmly against the shuttering (1), and
    that the holding device has at least one slot (8) in the peripheral surface, extending perpendicular to the cup bottom (4).
  2. Holding device (3) according to claim 1, characterised in that in the cavity (6) of the cup shape can be inserted a plastic or metal pin (12, 14) of which the portion encompassed by the cup fills the latter more or less in form-locking relationship and of which the portion (13, 15) protruding from the cup passes through the sleeper more or less perpendicularly to the standing surface and ending at least at the bottom surface (18) thereof.
  3. Holding device (3) according to claim 2, characterised in that the pin (12, 14) with the portion (13, or 15) protruding from the dowel (19) has a conical shape and the conical portion from the point of penetration through the dowel against the bottom surface (18) of the sleeper has an increasing or decreasing diameter if required.
  4. Holding device (3) according to claim 1, characterised in that the cup bottom (4) is shaped with a hollow against the shuttering (1) and in that the edge (9) can be pressed into contact by tightening the connecting means (10).
  5. Holding device (3) according to claim 1, characterised in that on the side facing away from the shuttering element (1) between the cup bottom (4) and the head of the connecting means (10) is arranged a metal washer (11) with central bore.
EP95103960A 1994-03-21 1995-03-17 Device for maintaining a dowel in a shuttering when making prestressed concrete railway sleepers Expired - Lifetime EP0677365B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409599 1994-03-18
DE4409599A DE4409599C2 (en) 1994-03-21 1994-03-21 Holding device for fastening a screw anchor in a formwork for producing prestressed concrete sleepers

Publications (2)

Publication Number Publication Date
EP0677365A1 EP0677365A1 (en) 1995-10-18
EP0677365B1 true EP0677365B1 (en) 2001-10-24

Family

ID=6513358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103960A Expired - Lifetime EP0677365B1 (en) 1994-03-21 1995-03-17 Device for maintaining a dowel in a shuttering when making prestressed concrete railway sleepers

Country Status (6)

Country Link
EP (1) EP0677365B1 (en)
AT (1) ATE207402T1 (en)
DE (2) DE4409599C2 (en)
DK (1) DK0677365T3 (en)
ES (1) ES2078889T3 (en)
PT (1) PT677365E (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8620398U1 (en) * 1986-07-30 1986-10-02 Walter-Thosti-Boswau Bau-Aktiengesellschaft, 8900 Augsburg Dowel holder
DE3629030A1 (en) * 1986-08-27 1988-04-14 Wayss & Freytag Ag DEVICE FOR FIXING TUBULAR INSTALLATION COMPONENTS
DE3815176C1 (en) * 1988-05-04 1989-08-24 Wayss & Freytag Ag, 6000 Frankfurt, De
DE9107028U1 (en) * 1991-06-07 1991-12-19 Dyckerhoff & Widmann AG, 8000 München Formwork for producing concrete sleepers
DE4216441C1 (en) * 1992-05-19 1993-07-15 Wayss & Freytag Ag, 6000 Frankfurt, De Dowel holder in shuttering for concrete rail sleeper - has integral core passing through dowel to sleeper bottom

Also Published As

Publication number Publication date
DK0677365T3 (en) 2002-02-18
ATE207402T1 (en) 2001-11-15
PT677365E (en) 2002-04-29
ES2078889T1 (en) 1996-01-01
DE9421158U1 (en) 1995-06-22
DE4409599A1 (en) 1995-10-05
EP0677365A1 (en) 1995-10-18
DE4409599C2 (en) 1999-06-17
ES2078889T3 (en) 2002-05-01

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