EP1212178B1 - Verfahren und vorrichtung zur herstellung von betonprodukten - Google Patents

Verfahren und vorrichtung zur herstellung von betonprodukten Download PDF

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Publication number
EP1212178B1
EP1212178B1 EP00948043A EP00948043A EP1212178B1 EP 1212178 B1 EP1212178 B1 EP 1212178B1 EP 00948043 A EP00948043 A EP 00948043A EP 00948043 A EP00948043 A EP 00948043A EP 1212178 B1 EP1212178 B1 EP 1212178B1
Authority
EP
European Patent Office
Prior art keywords
casting
endplate
feeding
bed
screws
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
EP00948043A
Other languages
English (en)
French (fr)
Other versions
EP1212178A1 (de
Inventor
Heikki Kankkunen
Aimo Seppänen
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.)
Consolis Technology Oy AB
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Consolis Technology Oy AB
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Filing date
Publication date
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Publication of EP1212178A1 publication Critical patent/EP1212178A1/de
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Publication of EP1212178B1 publication Critical patent/EP1212178B1/de
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
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/084—Producing shaped prefabricated articles from the material by vibrating or jolting the vibrating moulds or cores being moved horizontally for making strands of moulded articles
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B28B3/228—Slipform casting extruder, e.g. self-propelled extruder

Definitions

  • This invention relates to a method and apparatus for casting concrete elements comprising one or more hollow cores.
  • Slipform casting is a commonly used concrete element casting method.
  • a known slipform machine for casting hollow core slabs is described in patent publication FI 70821.
  • the concrete is compacted by the so-called shear compaction method, using oscillatory hollow core forming means.
  • slipform casting is used for producing a long, continuous casting that, once hardened, is sawn into sections of a desired length. In terms of handling, however, it is more preferable in some cases to produce castings having the correct final length.
  • DE-A-26 48 744 discloses a method and a device representing the closest prior art opposite the present invention.
  • the method according to the invention makes it possible to give both the front and the back end of the casting precisely the right final shape.
  • the portion of slab end waste parts would be proportionally greater than in the production of long, continuous slabs that are afterwards sawn into sections of the desired length. Therefore, it is particularly important to avoid producing waste parts in the case of short slabs.
  • one end of the concrete pre-stressing ropes can be anchored to a headplate, while the other end thereof can be anchored to the lower part of an endplate forming a part of the form. Because short elements do not always have to be pre-stressed, the invention can also be implemented using non-tensioned wires or reinforcement bars.
  • a movable anchor plate is employed that forms either the headplate or the lower part of the endplate. It can be mounted at an appropriate position on the casting bed according to the length of the element to be cast.
  • the method is easy to apply by using a customary slipform machine moving along a casting bed.
  • an endplate upper part that can be moved by means of the casting machine is fastened to the prior art device.
  • the apparatus comprises a slipform machine that moves along a bed 1 ( Figure1). It is also possible to use a stationary machine and a movable bed.
  • the casting machine comprises a feed hopper 2 and a number of parallel feeding screws 3 that become wider towards the rear end of the apparatus and the extensions of which form mandrels, i.e. compacting sleeves 4.
  • the shafts of the feeding screws are supported on the machine frame and connected to a drive 5 at their front end.
  • the concrete form is formed by a top plate 6 located above the screws and the mandrels as well as by side plates located on the sides thereof.
  • the reaction force of the screws makes the apparatus move on its wheels in the direction shown by the arrow.
  • the compacting sleeves move in relation to the casting machine, for example by rotating back and forth around the longitudinal axis in opposite directions relative to each other, or by traveling back and forth in the longitudinal direction, each compacting sleeve moving in the opposite direction relative to the adjacent sleeve.
  • the concrete is compacted into its final shape around the sleeves.
  • the top plate 6 can be vibrated. All of this is known.
  • a concrete chute 7 is mounted to the casting machine, under the feeding screws. Its upper surface is formed by a number of parallel chutes each of which lies under a feeding screw.
  • the casting machine comprises a bottom shutter 8 that can be pushed under the opening of the concrete hopper to cover the opening.
  • the shutter can be moved for example by means of a hydraulic actuator.
  • a headplate 9 is provided that forms a vertical wall in the front end and that comprises openings through which the mandrels 4 can be pushed.
  • a lower endplate 10 is mounted at the back end of the casting bed. In the upper edge thereof arched recesses are provided, shaped in such a way that the screws and the feeding chute of the casting machine can pass over it. Pre-stressing wires can also be anchored to the lower stop in advance. The other ends of the wires are anchored to headplate 9.
  • the casting machine comprises an upper endplate 11, in the lower edge of which are provided arched recesses, and which can be shifted, at the final stage of the casting, from a position in front of the concrete hopper to a position abutting the end wall of the finished slab.
  • the coinciding recesses of both of these parts form openings allowing passage of the feed screws and mandrels.
  • Figure 1a shows a cross-section of the form, perpendicularly to the casting direction, the lower endplate 10 and the upper endplate 11 aligning.
  • the device according to the invention operates as follows:
  • the casting is started by reversing the casting machine into headplate 9 located at the end of the form, into a position where the compacting sleeves 9 pass through the openings in the headplate ( Figure 1).
  • the feeding screws feed fresh concrete and press it against the headplate, compacting the front end of the element.
  • the casting machine moves forward along the bed in the normal way and an element is formed on the bed.
  • the casting machine moves until the lower endplate 10 is near the outer end of the concrete chute 7, below the chute. Fresh concrete is still flowing from tank 2 of the casting machine onto the feed screws 3, and the screws are rotating ( Figure 2).
  • the back end of the element is compacted in such a way that, while the upper endplate 11 is in the position shown in Figure 3, aligned with the lower endplate 10, the feeding screw 3 still feeds concrete and maintains the pressure at the compacting sleeve 4 which at the same time compacts the concrete into its final shape and density.
  • the precise feeding of concrete at the back end of the slab is controlled by continuously maintaining a steady feed pressure. If the pressure increases too much, the superfluous concrete is discharged through the space between the spiral ridges of the adjacent feeding screws, as well as by sliding backwards through the space between the ridge and the hollow core.
  • the screw continuously transfers concrete to its outer periphery with the result that the concrete is very loose at the feeding screw and is able to flow if the local pressure increases too much.
  • the casting machine is taken to the front end of the following form to be cast and is reversed into position with the compacting sleeves 4 in the headplate 9, passing through the openings in the headplate.
  • the feeding screws are started with the result that the rest of the concrete on the screws falls onto the form.
  • the upper endplate 11 can now be moved to the starting position by means of an actuator, and a new casting can be started.
  • the upper endplate is at least 100 to 150 mm wide. If it is this wide, it covers more than one screw ridge.
  • the lower endplate is as wide as the upper endplate, so that it covers the rear end of concrete chute at the final stage and, consequently, prevents the flow of concrete onto the form.
  • the headplate 9 and/or the lower part 10 of the endplate can be removably mounted in the desired position on the bed, to allow for changing the position of the stop according to the size of the slab to be cast.
  • Figure 6 shows a solution in which the headplate is fastened to the sides of the bed. The plate is locked in place by means of a stop slide 12 having holes 13 in its ends. In the sides of the bed, a number of consecutive holes 14 are provided, and the slide is locked in position as desired by pushing a pin through the aligning holes 13 and 14. Pre-stressing wires 15 are tensioned by means of the slide.
  • the holes 13 and 14 do not have to be made in horizontal surfaces but they can also be made in the vertical surfaces of the sides of the slide and the bed.
  • Figures 7a and b show a manner of locking in place the movable stop of Figure 6 in cross-section and from above, respectively.
  • the hole 13 in the slide is oval and its larger diameter is transversal to the casting direction.
  • a circular plate 16 is provided in the hole 13, having a diameter corresponding to the smaller diameter of the hole 13.
  • a pin 17 fitting the holes 14 in the sides of the bed is fastened eccentrically to the plate 16.
  • the top plate 18 is provided with an operating and locking lever 19.
  • the stop can be moved by turning the plate 16 in the oval hole 13 by means of the lever 19.
  • the holes 14 have the right spacing with respect to the size of the holes 13 and to the eccentricity of the pin 17, the position of the stop can be changed steplessly.
  • Adjustable locking of the headplate and endplate may be provided in some other expedient manner, and the plates can be locked not only to the sides but also to the end wall of the bed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Claims (4)

  1. Verfahren zum Gießen von Betonelementen mit einem oder mehreren sich in Längsrichtung erstreckenden Hohlkernen mittels einer Gleitformmaschine, die sich entlang eines Bettes (1) bewegt, wobei in dem Verfahren zu Beginn des Gießens Kernformungsmittel (4), die in der Maschine vorgesehen sind, durch Öffnungen in einer Kopfplatte (9), die an dem vorderen Ende des zu gießenden Elements vorgesehen ist und die vordere Wand der Form bildet, geschoben werden und frischer Beton gegen die Plattenfläche mittels Zufuhrschnecken (3), die in der Vorrichtung vorgesehen sind, gepresst wird, wonach des Gießen fortfährt und die Zufuhrschnecken frischen Beton auf das Bett zuführen, wobei die Gießmaschine sich aufgrund der Reaktionskraft des Betons zur selben Zeit auf dem Bett nach vorne bewegt, und während des Gießens das hintere Ende des Elements der Gießmaschine sowie die Zufuhrschnecken (3) und deren Formungsmittel (4) über einen Teil (10) hinwegtreten, der an dem Gussbett (1) montiert ist, um den unteren Teil der Endplatte der Form zu bilden, wobei die Zufuhrschnecken zunächst über dem unteren Teil der Endplatte bleiben,
    dadurch gekennzeichnet, dass
    während des Gießens des hinteren Endes des Elements
    die Zuführöffnung des Zufuhrtanks (2) der Vorrichtung durch ein Verschlussmittel (8) verschlossen wird, und ein Teil (11), das in der Vorrichtung vorgesehen ist, um den oberen Teil der Endplatte der Form zu bilden, über den unteren Teil (10) der Endplatte der Form geschoben wird, was dazu führt, dass Öffnungen zwischen dem oberen Teil und dem unteren Teil der Endplatte gebildet werden, wodurch ein Hindurchtritt der Zufuhrschnecken (3) und Formungsmittel (4) zugelassen wird, und
    die Zufuhrschnecken (3) und die Formungsmittel (4) anschließend aus den Tafelkernen herausgezogen werden.
  2. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet, dass
    bevor das Gießen begonnen wird, Drähte, die die Verstärkung des Elements bilden, zwischen der Kopfplatte (9) der Form und dem unteren Teil (10) der Endplatte der Form befestigt werden.
  3. Gleitformvorrichtung, die entlang eines Gussbettes (1) bewegbar ist, um Betonelemente zu gießen, wobei die Vorrichtung einen Zufuhrbehälter (2), Zufuhrschnecken (3), die an dem vorderen Ende ihrer Wellen gelagert sind, um frischen Beton zuzuführen, Formungsmittel (4), die sich von den Zufuhrschnecken erstrecken, um zumindest einen hohlen Kern in dem zu gießenden Element zu bilden, eine obere Wand (6) und Seitenwände der Form sowie eine Kopfplatte (9) an dem vorderen Ende des zu gießenden Elements umfasst, die die vordere Wand der Form bildet und Öffnungen umfasst, durch die Formungsmittel (4) hindurchgeschoben werden können,
    wobei die Vorrichtung einen Teil (10) umfasst, der an einem stationären Gussbett (1) montierbar ist, um den unteren Teil der Endplatte der Form zu bilden, und der Ausnehmungen in seinem oberen Rand umfasst, über die die Gießmaschine sowie die Zufuhrschnecken (3) und deren Formungsmittel (4) hinweg treten können,
    dadurch gekennzeichnet, dass:
    die Vorrichtung einen Teil (11) umfasst, der in der bewegbaren Gussvorrichtung montiert ist, um den oberen Teil der Endplatte der Form zu bilden, Ausnehmungen in seinem unteren Rand umfasst und in Relation zu der Gießmaschine in der Gießrichtung bewegbar ist zwischen einer Position vor der Öffnung des Zufuhrtanks (2) und einer Position über dem unteren Teil (10) der Rückwand über dem hinteren Ende des Elements im Endstadium des Gießens; und dass
    die Ausnehmungen in dem oberen Rand des unteren Teils (10) und in dem unteren Rand des oberen Teils (11) der Endplatte der Form derart gestaltet sind, dass sie Öffnungen bilden, durch die die Zufuhrschnecken (3) und Formungsmittel (10) geschoben werden können, wenn sich der untere Teil und der obere Teil ausrichten.
  4. Vorrichtung nach Anspruch 3,
    dadurch gekennzeichnet, dass
    die Kopfplatte (9) und/oder der untere Teil (11) der Endplatte der Form an dem Bett auf eine solche Weise befestigt sind, dass ihre Position gemäß der Länge des zu gießenden Elements verändert werden kann.
EP00948043A 1999-08-09 2000-07-10 Verfahren und vorrichtung zur herstellung von betonprodukten Expired - Lifetime EP1212178B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI991690A FI109460B (fi) 1999-08-09 1999-08-09 Menetelmä ja laitteisto betonielementtien valamiseksi
FI991690 1999-08-09
PCT/FI2000/000633 WO2001010616A1 (en) 1999-08-09 2000-07-10 Method and apparatus for producing concrete products

Publications (2)

Publication Number Publication Date
EP1212178A1 EP1212178A1 (de) 2002-06-12
EP1212178B1 true EP1212178B1 (de) 2004-01-07

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ID=8555129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00948043A Expired - Lifetime EP1212178B1 (de) 1999-08-09 2000-07-10 Verfahren und vorrichtung zur herstellung von betonprodukten

Country Status (8)

Country Link
EP (1) EP1212178B1 (de)
AT (1) ATE257422T1 (de)
AU (1) AU6163200A (de)
DE (1) DE60007643T2 (de)
DK (1) DK1212178T3 (de)
ES (1) ES2214292T3 (de)
FI (1) FI109460B (de)
WO (1) WO2001010616A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102191233B1 (ko) 2020-05-28 2020-12-15 주식회사 삼우피씨에스 폭이 상이한 중공슬래브를 제조할 수 있는 중공슬래브 제조장치

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI113850B (fi) * 2002-01-30 2004-06-30 Consolis Technology Oy Ab Menetelmä ja laite betonituotteiden valamiseksi
CN113263612A (zh) * 2021-05-28 2021-08-17 中交投资咨询(北京)有限公司 装配式预制空心板梁施工模具

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530552A (en) * 1968-04-29 1970-09-29 Glen H Calder Extrusion device
US3583046A (en) * 1968-11-07 1971-06-08 Walter Dickinson Manufacture of structural members
SE398839B (sv) * 1975-11-07 1978-01-23 A Betong Ab Sett och anleggning for etappvis gjutning av med atminstone tva lengsgaende halrum forsedda betongelement
IT1195098B (it) * 1986-07-11 1988-10-12 Russo A & C Sas Impianto per la produzione su pista di pannelli alveolari in cemento armato precompresso o parzialmente precompresso o con armatura lenta estesa alle superfici inferiore e superiore ed alle costole e prodotto derivato

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102191233B1 (ko) 2020-05-28 2020-12-15 주식회사 삼우피씨에스 폭이 상이한 중공슬래브를 제조할 수 있는 중공슬래브 제조장치

Also Published As

Publication number Publication date
DE60007643D1 (de) 2004-02-12
WO2001010616A1 (en) 2001-02-15
AU6163200A (en) 2001-03-05
ATE257422T1 (de) 2004-01-15
DK1212178T3 (da) 2004-03-08
ES2214292T3 (es) 2004-09-16
FI19991690A (fi) 2001-02-10
EP1212178A1 (de) 2002-06-12
FI109460B (fi) 2002-08-15
DE60007643T2 (de) 2004-06-17

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