EP3362239A1 - Method for producing concrete pipes - Google Patents

Method for producing concrete pipes

Info

Publication number
EP3362239A1
EP3362239A1 EP16791517.2A EP16791517A EP3362239A1 EP 3362239 A1 EP3362239 A1 EP 3362239A1 EP 16791517 A EP16791517 A EP 16791517A EP 3362239 A1 EP3362239 A1 EP 3362239A1
Authority
EP
European Patent Office
Prior art keywords
concrete
core
mold
sleeve
space
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.)
Granted
Application number
EP16791517.2A
Other languages
German (de)
French (fr)
Other versions
EP3362239C0 (en
EP3362239B1 (en
Inventor
Ulrich SCHLÜSSELBAUER
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3362239A1 publication Critical patent/EP3362239A1/en
Application granted granted Critical
Publication of EP3362239C0 publication Critical patent/EP3362239C0/en
Publication of EP3362239B1 publication Critical patent/EP3362239B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/04—Methods or machines specially adapted for the production of tubular articles by casting into moulds by simple casting, the material being neither positively compacted nor forcibly fed
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/765—Top or bottom rings
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/90—Methods or apparatus for demoulding or discharging after shaping

Definitions

  • the invention relates to a method for producing concrete pipes in a standing mold with a mold space between a core and a longitudinally divided shell and with the mold space bottom and top final molding sleeves, wherein pourable concrete poured into the mold cavity and the concrete pipe after a Setting the concrete is removed from the mold by opening the jacket.
  • the upper mold sleeve must allow casting of the flowable concrete in the mold cavity from above, which requires frontally open upper mold sleeves with the disadvantage that the end faces of the tubular body in the region of the open end faces of the upper mold sleeves must be smoothed by hand, what's more in that the setting behavior of the pourable concrete poured into the mold cavity can hardly be taken into account.
  • the air bubbles trapped in the flowable concrete escape upwards and can escape only partially through the open end face of the upper mold sleeve, so that the air bubbles collecting in particular in the area of the outer peripheral wall of the upper mold sleeve Give rise to undesired air pores in the area of the offset, frontal coupling approaches of the finished concrete pipes.
  • the invention is therefore based on the object, a wet concrete casting process for the manufacture of concrete pipes in the mold space between a core and a shell of a standing mold in such a way that not only the
  • the invention solves the problem by the fact that the flowable concrete is filled with removed upper mold sleeve in a predetermined amount in the mold space and that a closed ring forming upper mold sleeve only after a set time for a predetermined set volume of the cast tubular body between the core and the shell is pressed shaping in the end face of the tubular body.
  • Compression molding of the front-side coupling approach by pressing the upper mold sleeve in the still flowable concrete smooth wall surfaces are formed not only in the peripheral region, but also in the region of the front page.
  • the waiting for the setting process for the cast in the mold cavity concrete and the subsequent forming of the coupling approach requires a filling of the mold space with a predetermined amount of flowable concrete in order to ensure a predetermined length of the concrete pipe to be produced. It must therefore be provided a filling volume, the volume of the produced concrete pipe to the
  • Setting volume can be determined in a simple manner, for example by experiments. In practice, it has been found that already after a few minutes a settlement is present, which allows a compression molding by the upper mold sleeve within a given manufacturing tolerance.
  • the molding of the front-side coupling approach of the concrete pipe to be produced can be supported by rotating the upper mold sleeve during and / or after the impressions in the flowable concrete.
  • Fig. 1 is a mold for carrying out an inventive
  • Fig. 2 shows the mold space between the core and shell of the mold
  • Fig. 3 is a view corresponding to FIG. 2 of the mold after
  • a casting mold for carrying out the wet concrete casting method according to the invention is used for the purpose of carrying out the invention
  • Coupling attachment 8 at the opposite end of the tubular body 7 serves a separate upper mold sleeve 9 in the form of a closed ring which can be inserted coaxially with the mold between the core 2 and the shell 3 with pressure in the annular space 4 and preferably rotated about its axis.
  • both the core 2 and the shell 3 are designed to be split lengthwise. While the jacket 3 has to be pulled radially outward from the concrete pipe to be demoulded, the core is to be drawn in radially inwards from the concrete pipe, in order to release the pipe body 7.
  • Coupling attachment 8 is pressed into the tubular body 7 on flowable concrete, a setting of the tubular body 7 is awaited.
  • the filling level of the mold space 4 according to FIG. 2 decreases from a starting point 10 indicated by dash-dot lines under a compression of the concrete to a level 1 1.
  • the jacket and / or the core can be provided with a vibrating drive.
  • the air bubbles trapped in the flowable concrete can escape upward from the mold space 4 during this setting time, so that the coupling projection 8 is formed without pores with smooth wall surfaces during subsequent impressions of the upper mold sleeve into the flowable concrete between the core 2 and the casing 3. It is only necessary to make sure that the when introducing the upper mold sleeve 9 in the mold space 4 above the tube body 7 collecting air can escape from the mold sleeve 9, which is ensured by the required guide gap between the upper mold sleeve 9 and the core 2.
  • the tubular body 7 can be removed from the mold by the jacket 3 is opened and pulled apart radially outward and the core 2 is radially retracted.
  • the upper mold sleeve 9 may remain on the tubular body 7 during demolding, but may also be removed beforehand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

The invention relates to a method for producing concrete pipes in a standing casting mold, comprising a molding space (4) between a core and a longitudinally divided casing (3), and molding sleeves (5, 9) closing off the molding space (4) on top and bottom, wherein pourable concrete is filled into the molding space (4), and after a setting of the concrete, the pipe body (7) is demolded by opening the casing (3). In order to be able to cast concrete pipes of high quality, the pourable concrete, according to the invention, filled into the molding space (4) in a predetermined quantity while the top molding sleeve (9) is removed and the top molding sleeve (9) forming a closed ring is shapingly pressed into the end face of the pipe body (7) between the core (2) and the casing (3) only after a setting time for a predetermined setting volume of the cast pipe body (7).

Description

Verfahren zum Herstellen von Betonrohren  Method for producing concrete pipes
Technisches Gebiet Technical area
Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Betonrohren in einer stehenden Gießform mit einem Formraum zwischen einem Kern und einem der Länge nach geteilten Mantel und mit den Formraum unten und oben abschließenden Formmuffen, wobei fließfähiger Beton in den Formraum eingefüllt und das Betonrohr nach einem Abbinden des Betons durch ein Öffnen des Mantels entformt wird. The invention relates to a method for producing concrete pipes in a standing mold with a mold space between a core and a longitudinally divided shell and with the mold space bottom and top final molding sleeves, wherein pourable concrete poured into the mold cavity and the concrete pipe after a Setting the concrete is removed from the mold by opening the jacket.
Zum Unterschied zu einem Rüttel-Pressverfahren wird bei einem In contrast to a vibratory pressing process is at a
Nassbetongießverfahren fließfähiger Beton in den Formraum einer Gießform gegossen, was dazu führt, dass der Betonkörper in der Gießform Abbinden muss, bevor er entformt werden kann. Für die Herstellung von Betonrohren in stehenden Gießformen bedeutet dies, dass zum Entformen des abgebundenen Rohrkörpers der geteilte Mantel der Gießform entweder durch ein Aufweiten oder ein radiales Auseinanderziehen der Mantelhälften geöffnet und der Kern in seinem Durchmesser verkleinert wird. Da die obere Formmuffe dem Mantel zugeordnet ist, muss auch die obere Formmuffe geteilt ausgeführt sein. Wet concrete pouring process poured pourable concrete into the mold cavity of a mold, which causes the concrete body in the mold to set before it can be demolded. For the production of concrete pipes in upright casting molds, this means that to demold the set tubular body of the split shell of the mold opened either by a widening or a radial pulling apart of the shell halves and the core is reduced in diameter. Since the upper mold sleeve is assigned to the jacket, and the upper mold sleeve must be made split.
Allerdings muss die obere Formmuffe ein Gießen des fließfähigen Betons in den Formraum von oben zulassen, was stirnseitig offene obere Formmuffen mit dem Nachteil erfordert, dass die Stirnflächen des Rohrkörpers im Bereich der offenen Stirnseiten der oberen Formmuffen von Hand aus geglättet werden müssen, wozu noch kommt, dass das Setzverhalten des in den Formraum gegossenen, fließfähigen Betons kaum berücksichtigt werden kann. Im Zuge des Setzvorgangs entweichen die im fließfähigen Beton eingeschlossenen Luftbläschen nach oben und können nur zum Teil über die offene Stirnseite der oberen Formmuffe entweichen, sodass die sich insbesondere im Bereich der äußeren Umfangswand der oberen Formmuffe sammelnden Luftbläschen Anlass zu unerwünschten Luftporen im Bereich der abgesetzten, stirnseitigen Kupplungsansätze der fertigen Betonrohre geben. However, the upper mold sleeve must allow casting of the flowable concrete in the mold cavity from above, which requires frontally open upper mold sleeves with the disadvantage that the end faces of the tubular body in the region of the open end faces of the upper mold sleeves must be smoothed by hand, what's more in that the setting behavior of the pourable concrete poured into the mold cavity can hardly be taken into account. In the course of the setting process, the air bubbles trapped in the flowable concrete escape upwards and can escape only partially through the open end face of the upper mold sleeve, so that the air bubbles collecting in particular in the area of the outer peripheral wall of the upper mold sleeve Give rise to undesired air pores in the area of the offset, frontal coupling approaches of the finished concrete pipes.
Um das Setzverhalten von im Rüttel-Pressverfahren hergestellten Betonrohren nach ihrer Entformung berücksichtigen zu können, ist es bekannt (EP 0 476 245 A2), die obere Formmuffe erst nach einem durch ein Rütteln bedingten In order to be able to take account of the setting behavior of concrete pipes produced by vibratory pressing after demoulding, it is known (EP 0 476 245 A2) that the upper molded sleeve is only produced after shaking
Verdichten des Betons unter einer Verdrängung des überschüssigen Betons aus dem Formraum zwischen Formkern und Formmantel auf den verdichteten Betonkörper formgebend aufzudrücken, sodass von einem auch im Bereich des durch die obere Formmuffe gebildeten Kupplungsansatzes gleichmäßig verdichteten Betonkörper ausgegangen werden kann. Abgesehen davon, dass bei einem Rüttel-Pressverfahren zum Unterschied zu einem  Compressing the concrete under a displacement of the excess concrete from the mold space between the mold core and mold shell on the compacted concrete body shape, so that it can be assumed that a uniformly compressed concrete body in the region of the coupling formed by the upper mold sleeve coupling approach. Apart from that with a Rüttel-pressing method differently to a
Nassbetongießverfahren die durch im fließfähigen Beton aufsteigenden Wet concrete pouring through rising in the flowable concrete
Luftbläschen bedingten Schwierigkeiten nicht auftreten, ist bei diesem bekannten Rüttel-Pressverfahren zur Herstellung von Rohrkörpern der Austritt des überschüssigen Betons aus dem Formraum als nachteilig anzusehen.Air bubbles conditional difficulties do not occur in this known Rüttel-pressing method for the production of tubular bodies, the outlet of the excess concrete from the mold cavity is to be regarded as disadvantageous.
Außerdem bedarf es einer Relativbewegung zwischen dem Formkern und dem Formmantel um die zum Verdrängen des überschüssigen Betons aus dem Formraum erforderliche Ringöffnung zwischen der oberen Formmuffe und dem Kern schließen zu können. Darstellung der Erfindung In addition, it requires a relative movement between the mandrel and the mold shell in order to close the required for displacing the excess concrete from the mold cavity ring opening between the upper mold sleeve and the core can. Presentation of the invention
Der Erfindung liegt somit die Aufgabe zugrunde, ein Nassbetongießverfahren zum Herstellen von Betonrohren im Formraum zwischen einem Kern und einem Mantel einer stehenden Gießform so auszugestalten, dass nicht nur die The invention is therefore based on the object, a wet concrete casting process for the manufacture of concrete pipes in the mold space between a core and a shell of a standing mold in such a way that not only the
Voraussetzungen für eine maßgenaue Ausbildung der durch die obere Requirements for a dimensionally accurate training by the top
Formmuffe gebildeten Kupplungsansätze geschaffen werden, sondern auch die Gefahr der Ausbildung von Luftporen im abgebundenen Rohrkörper vermieden und das Setzverhalten des fließfähigen Betons in einfacher Weise Form sleeve formed coupling approaches are created, but also avoids the risk of the formation of air pores in the hardened tubular body and the setting behavior of the flowable concrete in a simple manner
berücksichtigt werden kann. Ausgehend von einem Verfahren der eingangs geschilderten Art löst die Erfindung die gestellte Aufgabe dadurch, dass der fließfähige Beton bei abgenommener oberer Formmuffe in einer vorbestimmten Menge in den Formraum eingefüllt wird und dass die einen geschlossenen Ring bildende obere Formmuffe erst nach einer Setzzeit für ein vorgegebenes Setzvolumen des gegossenen Rohrkörpers zwischen dem Kern und dem Mantel formgebend in die Stirnfläche des Rohrkörpers eingedrückt wird. can be taken into account. Based on a method of the type described, the invention solves the problem by the fact that the flowable concrete is filled with removed upper mold sleeve in a predetermined amount in the mold space and that a closed ring forming upper mold sleeve only after a set time for a predetermined set volume of the cast tubular body between the core and the shell is pressed shaping in the end face of the tubular body.
Da der fließfähige Beton bei abgenommener oberer Formmuffe in den Since the flowable concrete with removed upper mold sleeve in the
Formraum gegossen und die obere Formmuffe erst nach einer vorgegebenen Setzzeit in den noch fließfähigen Beton eingedrückt wird, können die während der Setzzeit im Rohrkörper aufsteigenden Luftbläschen unbehindert durch die obere Formmuffe nach oben entweichen, sodass beim anschließenden Molded space poured and the upper mold sleeve is pressed after a predetermined setting time in the still flowable concrete, the ascending during the setting time in the tubular body air bubbles can escape unhindered through the upper mold sleeve upwards, so in the subsequent
Formpressen des stirnseitigen Kupplungsansatzes durch ein Eindrücken der oberen Formmuffe in den noch fließfähigen Beton glatte Wandflächen nicht nur im Umfangsbereich, sondern auch im Bereich der Stirnseite geformt werden. Das Abwarten des Setzvorgangs für den in den Formraum gegossenen Beton und das nachträgliche Formen des Kupplungsansatzes setzt allerdings eine Befüllung des Formraums mit einer vorgegebenen Menge an fließfähigem Beton voraus, um eine vorgegebene Länge des herzustellenden Betonrohrs sicherstellen zu können. Es muss demnach ein Füllvolumen bereitgestellt werden, das das Volumen des herzustellenden Betonrohrs um das Compression molding of the front-side coupling approach by pressing the upper mold sleeve in the still flowable concrete smooth wall surfaces are formed not only in the peripheral region, but also in the region of the front page. The waiting for the setting process for the cast in the mold cavity concrete and the subsequent forming of the coupling approach, however, requires a filling of the mold space with a predetermined amount of flowable concrete in order to ensure a predetermined length of the concrete pipe to be produced. It must therefore be provided a filling volume, the volume of the produced concrete pipe to the
Setzvolumen übersteigt. Das Setzverhalten unterschiedlicher Setting volume exceeds. The setting behavior of different
Betonzusammensetzungen und damit das jeweils zu berücksichtigende Concrete compositions and thus the respective to be considered
Setzvolumen kann in einfacher Weise beispielsweise durch Versuche festgestellt werden. In der Praxis hat sich herausgestellt, dass bereits nach wenigen Minuten eine Setzung vorliegt, die eine Formpressung durch die obere Formmuffe innerhalb einer vorgegebenen Fertigungstoleranz erlaubt. Setting volume can be determined in a simple manner, for example by experiments. In practice, it has been found that already after a few minutes a settlement is present, which allows a compression molding by the upper mold sleeve within a given manufacturing tolerance.
Das Formpressen des stirnseitigen Kupplungsansatzes des herzustellenden Betonrohrs kann durch ein Drehen der oberen Formmuffe während und/oder nach dem Eindrücken in den fließfähigen Beton unterstützt werden. Kurze Beschreibung der Zeichnung The molding of the front-side coupling approach of the concrete pipe to be produced can be supported by rotating the upper mold sleeve during and / or after the impressions in the flowable concrete. Short description of the drawing
Anhand der Zeichnung wird das erfindungsgemäße Verfahren näher erläutert. Es zeigen Reference to the drawing, the inventive method is explained in detail. Show it
Fig. 1 eine Gießform zur Durchführung eines erfindungsgemäßen  Fig. 1 is a mold for carrying out an inventive
Herstellungsverfahrens für Betonrohre in einem Axialschnitt mit einer vom Formraum abgehobenen oberen Formmuffe unmittelbar nach der Befüllung mit fließfähigem Beton,  Production process for concrete pipes in an axial section with an upper mold sleeve lifted from the mold cavity immediately after filling with flowable concrete,
Fig. 2 den Formraum zwischen Kern und Mantel der Gießform Fig. 2 shows the mold space between the core and shell of the mold
ausschnittsweise im Bereich der oberen Formmuffe nach dem  in sections in the area of the upper mold sleeve after the
Setzvorgang des Rohrkörpers aus fließfähigem Beton in einem größeren Setting process of the tubular body of flowable concrete in a larger
Maßstab und Scale and
Fig. 3 eine der Fig. 2 entsprechende Darstellung der Gießform nach dem  Fig. 3 is a view corresponding to FIG. 2 of the mold after
formgebenden Eindrücken der oberen Formmuffe in den Rohrkörper.  shaping impressions of the upper mold sleeve in the tubular body.
Weg zur Ausführung der Erfindung Wie sich insbesondere aus der Fig. 1 entnehmen lässt, weist eine Gießform zur Durchführung des erfindungsgemäßen Nassbetongießverfahrens zur As can be seen in particular from FIG. 1, a casting mold for carrying out the wet concrete casting method according to the invention is used for the purpose of carrying out the invention
Herstellung eines Betonrohrs einen Sockel 1 mit einem Kern 2 und einem Mantel 3 auf, zwischen dem und dem Kern 2 ein ringförmiger Formraum 4 gebildet wird. Unten wird dieser Formraum 4 durch eine Formmuffe 5 Production of a concrete pipe to a base 1 with a core 2 and a shell 3, between which and the core 2, an annular mold space 4 is formed. Below this shape space 4 by a molded sleeve. 5
abgeschlossen, die auf dem Sockel 1 aufruht und in Verbindung mit dem Mantel 3 für die Ausbildung einer erweiterten Muffe 6 am unteren Ende des Rohrkörpers 7 aus Beton sorgt. Für die Formung eines zur Muffe 6 completed, which rests on the base 1 and in conjunction with the jacket 3 for the formation of an enlarged sleeve 6 at the lower end of the tubular body 7 made of concrete. For the formation of a sleeve to the 6th
komplementären, einspringenden, aus der Fig. 3 ersichtlichen complementary, re-entrant, apparent from Fig. 3
Kupplungsansatzes 8 am gegenüberliegenden Ende des Rohrkörpers 7 dient eine gesonderte obere Formmuffe 9 in Form eines geschlossenen Rings, der koaxial zur Gießform zwischen dem Kern 2 und dem Mantel 3 mit Druck in den Ringraum 4 eingeführt und vorzugsweise um seine Achse gedreht werden kann. Zum Entformen eines hergestellten Betonrohrs sind üblicherweise sowohl der Kern 2 als auch der Mantel 3 der Länge nach geteilt ausgeführt. Während der Mantel 3 radial nach außen vom zu entformenden Betonrohr abgezogen werden muss, ist der Kern vom Betonrohr radial nach innen einzuziehen, um den Rohrkörper 7 freizugeben. Dies wird in bekannter Weise dadurch erreicht, dass die in der Gebrauchsstellung des Kerns mit Abstand in Umfangsrichtung parallel zueinander verlaufenden Längsränder der geteilten Umfangswand des Kerns 2 gegeneinander gezogen werden. Bei einer konischen Kernausbildung kann eine sonst erforderliche Teilung des Kerns auch entfallen. Die in der Gebrauchsstellung des Mantels 3 aneinanderliegenden Längsränder des geteilten Mantels 3 werden dementsprechend auseinandergezogen. Bei einer einteiligen Ausführung wird somit der Mantel 3 aufgeweitet, während bei einer zweiteiligen Konstruktion die beiden Mantelhälften auseinandergezogen werden. Zur Herstellung eines Betonrohrs wird fließfähiger Beton in einer vorgegebenen, auf das herzustellende Rohr abgestimmte Menge in den Formraum 4 zwischen dem Kern 2 und dem Mantel der Gießform bei abgehobener oberer Formmuffe 9 meistens von oben entsprechend der Fig. 1 eingefüllt. In Sonderfällen ist aber auch ein Einpressen des fließfähigen Betons durch eine Mantelöffnung in den Formraum 4 möglich. Bevor die obere Formmuffe 9 zur Formung eines Coupling attachment 8 at the opposite end of the tubular body 7 serves a separate upper mold sleeve 9 in the form of a closed ring which can be inserted coaxially with the mold between the core 2 and the shell 3 with pressure in the annular space 4 and preferably rotated about its axis. For demolding of a manufactured concrete pipe usually both the core 2 and the shell 3 are designed to be split lengthwise. While the jacket 3 has to be pulled radially outward from the concrete pipe to be demoulded, the core is to be drawn in radially inwards from the concrete pipe, in order to release the pipe body 7. This is achieved in a known manner in that in the use position of the core at a distance in the circumferential direction parallel to each other extending longitudinal edges of the divided peripheral wall of the core 2 are pulled against each other. With a conical core training an otherwise necessary division of the core can also be omitted. The contiguous in the use position of the shell 3 longitudinal edges of the split shell 3 are accordingly pulled apart. In a one-piece design thus the jacket 3 is widened, while in a two-part construction, the two shell halves are pulled apart. For the production of a concrete pipe, flowable concrete in a predetermined quantity matched to the pipe to be produced is filled into the mold space 4 between the core 2 and the casing of the mold with the upper mold sleeve 9 lifted off, as shown in FIG. In special cases, however, it is also possible to press in the flowable concrete through a shell opening into the forming space 4. Before the upper mold sleeve 9 for forming a
Kupplungsansatzes 8 in den Rohrkörper 7 auf fließfähigem Beton eingedrückt wird, wird ein Setzen des Rohrkörpers 7 abgewartet. Während dieser Setzzeit sinkt die Füllhöhe des Formraums 4 gemäß der Fig. 2 von einem strichpunktiert angedeuteten Ausgansniveau 10 unter einer Verdichtung des Betons auf ein Niveau 1 1 ab. Um die Setzzeit zu verkürzen kann der Mantel und/oder der Kern mit einem Rüttelantrieb versehen werden.  Coupling attachment 8 is pressed into the tubular body 7 on flowable concrete, a setting of the tubular body 7 is awaited. During this setting time, the filling level of the mold space 4 according to FIG. 2 decreases from a starting point 10 indicated by dash-dot lines under a compression of the concrete to a level 1 1. To shorten the setting time, the jacket and / or the core can be provided with a vibrating drive.
Die im fließfähigen Beton eingeschlossenen Luftbläschen können während dieser Setzzeit nach oben aus dem Formraum 4 entweichen, sodass beim anschließenden Eindrücken der oberen Formmuffe in den fließfähigen Beton zwischen dem Kern 2 und dem Mantel 3 der Kupplungsansatz 8 porenfrei mit glatten Wandflächen geformt wird. Es ist lediglich darauf zu achten, dass die beim Einführen der oberen Formmuffe 9 in den Formraum 4 sich oberhalb des Rohrkörpers 7 sammelnde Luft aus der Formmuffe 9 entweichen kann, was durch den erforderlichen Führungsspalt zwischen der oberen Formmuffe 9 und dem Kern 2 gewährleistet wird. Nach einem für das Entformen notwendigen Abbinden des Betons kann der Rohrkörper 7 entformt werden, indem der Mantel 3 geöffnet und radial nach außen auseinandergezogen sowie der Kern 2 radial eingezogen wird. Die obere Formmuffe 9 kann während der Entformung auf dem Rohrkörper 7 verbleiben aber auch vorher abgezogen werden. The air bubbles trapped in the flowable concrete can escape upward from the mold space 4 during this setting time, so that the coupling projection 8 is formed without pores with smooth wall surfaces during subsequent impressions of the upper mold sleeve into the flowable concrete between the core 2 and the casing 3. It is only necessary to make sure that the when introducing the upper mold sleeve 9 in the mold space 4 above the tube body 7 collecting air can escape from the mold sleeve 9, which is ensured by the required guide gap between the upper mold sleeve 9 and the core 2. After a necessary for demolding bonding of the concrete, the tubular body 7 can be removed from the mold by the jacket 3 is opened and pulled apart radially outward and the core 2 is radially retracted. The upper mold sleeve 9 may remain on the tubular body 7 during demolding, but may also be removed beforehand.

Claims

Patentansprüche claims
1 . Verfahren zum Herstellen von Betonrohren in einer stehenden Gießform mit einem Formraum (4) zwischen einem Kern (2) und einem der Länge nach geteilten Mantel (3) und mit den Formraum (4) unten und oben abschließenden Formmuffen (5, 9), wobei fließfähiger Beton in den Formraum (4) eingefüllt und der Rohrkörper (7) nach einem Abbinden des Betons durch ein Öffnen des Mantels (3) entformt wird, dadurch gekennzeichnet, dass der fließfähige Beton bei abgenommener oberer Formmuffe (9) in einer vorbestimmten Menge in den Formraum (4) eingefüllt wird und dass die einen geschlossenen Ring bildende obere Formmuffe (9) erst nach einer Setzzeit für ein vorgegebenes 1 . Method for producing concrete pipes in a standing casting mold with a forming space (4) between a core (2) and a longitudinally divided shell (3) and forming sleeves (5, 9) closing at the bottom and at the top of the forming space (4), wherein poured flowable concrete into the mold space (4) and the tubular body (7) is released after setting of the concrete by opening the jacket (3), characterized in that the flowable concrete with removed upper mold sleeve (9) in a predetermined amount in the mold space (4) is filled and that the upper ring forming a closed ring (9) only after a setting time for a given
Setzvolumen des gegossenen Rohrkörpers (7) zwischen dem Kern (2) und dem Mantel (3) formgebend in die Stirnfläche des Rohrkörpers (7) eingedrückt wird.  Setting volume of the cast tube body (7) between the core (2) and the jacket (3) is pressed shaping in the end face of the tubular body (7).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die obere Formmuffe (9) zwischen dem Kern (2) und dem Mantel (3) in den Rohrköper (7) eingedrückt und um ihre Achse gedreht wird. 2. The method according to claim 1, characterized in that the upper mold sleeve (9) between the core (2) and the jacket (3) in the Rohrköper (7) is pressed and rotated about its axis.
EP16791517.2A 2015-10-16 2016-10-13 Method for producing concrete pipes Active EP3362239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50881/2015A AT517916A1 (en) 2015-10-16 2015-10-16 Method for producing concrete pipes
PCT/AT2016/050260 WO2017063010A1 (en) 2015-10-16 2016-10-13 Method for producing concrete pipes

Publications (3)

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EP3362239A1 true EP3362239A1 (en) 2018-08-22
EP3362239C0 EP3362239C0 (en) 2023-06-14
EP3362239B1 EP3362239B1 (en) 2023-06-14

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US (1) US11724417B2 (en)
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AT (1) AT517916A1 (en)
WO (1) WO2017063010A1 (en)

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CN112936571B (en) * 2019-11-26 2023-01-24 金科新能源有限公司 Forming construction method of prefabricated tower barrel
CN111745793B (en) * 2020-06-30 2021-08-27 北京欣江峰市政工程有限责任公司 Hollow square pile forming die of concrete
CN113199619A (en) * 2021-05-06 2021-08-03 山东春禾新材料研究院有限公司 Mold for manufacturing ultra-high performance concrete hollow pipe and application method

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Also Published As

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AT517916A1 (en) 2017-05-15
EP3362239C0 (en) 2023-06-14
WO2017063010A1 (en) 2017-04-20
US20180297234A1 (en) 2018-10-18
US11724417B2 (en) 2023-08-15
EP3362239B1 (en) 2023-06-14

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