EP1212178B1 - Procede et appareil de production de produits en beton - Google Patents

Procede et appareil de production de produits en beton 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
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German (de)
English (en)
Other versions
EP1212178A1 (fr
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/fr
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Publication of EP1212178B1 publication Critical patent/EP1212178B1/fr
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
    • 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. Procédé de coulage d'éléments en béton possédant une ou plusieurs âmes creuses longitudinales à l'aide d'une machine de coffrage glissant qui se déplace le long d'un lit (1), dans lequel, au début du coulage, un moyen de formation d'âme (4) prévu dans la machine est poussé dans des ouvertures situées dans une plaque frontale (9) prévue à l'extrémité avant de l'élément à couler, et formant la paroi avant de la forme, et du béton frais est pressé contre la face de la plaque à l'aide de vis d'alimentation (3) prévues dans l'appareil, après quoi le coulage continue et les vis d'alimentation fournissent du béton frais sur le lit, la machine de coulée se déplaçant d'avant en arrière en raison de la force de réaction du béton au même moment, et dans lequel, pendant le coulage de l'extrémité arrière de l'élément, la machine de coulée, ainsi que les vis d'alimentation (3) et le moyen de formation (4) de celles-ci, passent sur une partie (10) montée sur le lit de coulée (1) afin de former la partie inférieure de la plaque d'extrémité de la forme, les vis d'alimentation restant, tout d'abord, au-dessus de la partie inférieure de la plaque d'extrémité, caractérisé en ce que, pendant le coulage de l'extrémité arrière de l'élément, l'ouverture d'alimentation du réservoir d'alimentation (2) de l'appareil est fermée par un moyen de fermeture (8), et une partie (11) prévue dans l'appareil pour former la partie supérieure de la plaque d'extrémité de la forme est poussée au-dessus de la partie inférieure (10) de la plaque d'extrémité de la forme, entraínant la formation d'ouvertures entre la partie supérieure et la partie inférieure de la plaque d'extrémité, permettant le passage des vis d'alimentation (3) et du moyen de formation (4),
       les vis d'alimentation (3) et le moyen de formation (4) sont ensuite sortis des âmes de la dalle.
  2. Procédé selon la revendication 2, caractérisé en ce que, avant que le coulage ne soit lancé, des câbles formant le renfort de l'élément sont fixés entre la plaque frontale (9) de la forme et la partie inférieure (10) de la plaque d'extrémité de la forme.
  3. Dispositif de coffrage glissant pouvant se déplacer le long d'un lit de coulée (1) pour couler des éléments en béton, le dispositif comprenant un conteneur d'alimentation (2), des vis d'alimentation (3) supportées sur l'extrémité avant de leurs arbres pour fournir du béton frais, un moyen de formation (4) s'étendant depuis les vis d'alimentation pour former au moins une âme creuse dans l'élément à couler, une paroi supérieure (6) et des parois latérales de la forme, ainsi qu'une plaque frontale (9) à l'extrémité avant de l'élément à couler, formant la paroi avant de la forme et comprenant des ouvertures dans lesquelles le- moyen de formation (4) peut être poussé,
       dans lequel le dispositif comprend une partie (10) pouvant être montée sur un lit de coulée stationnaire (1) afin de former la partie inférieure de la plaque d'extrémité de la forme, comprenant des renfoncements sur son bord supérieur et sur laquelle la machine de coulée, ainsi que les vis d'alimentation (3) et le moyen de formation (4) de celles-ci, peuvent passer, caractérisé en ce que :
    le dispositif comprend une partie (11) montée dans l'appareil de coulée mobile afin de former la partie supérieure de la plaque d'extrémité de la forme, comprenant des renfoncements sur son bord inférieur et pouvant se déplacer par rapport à la machine de coulée dans la direction de la coulée, entre une position située en face de l'ouverture du réservoir d'alimentation (2) et une position située au-dessus de la partie inférieure (10) de la paroi arrière, au-dessus de l'extrémité arrière de l'élément, lors de l'étape finale du coulage ; et
    les renfoncements situés dans le bord supérieur de la partie inférieure (10) et dans le bord inférieur de la partie supérieure (11) de la plaque d'extrémité de la forme possèdent une forme permettant de former des ouvertures dans lesquelles les vis d'alimentation (3) et le moyen de formation (10) peuvent être poussés lorsque la partie inférieure et la partie supérieure sont alignées.
  4. Dispositif selon la revendication 3, caractérisé en ce que la plaque frontale (9) et/ou la partie inférieure (11) de la plaque d'extrémité de la forme sont fixées au lit de telle sorte que sa position puisse être modifiée en fonction de la longueur de l'élément à couler.
EP00948043A 1999-08-09 2000-07-10 Procede et appareil de production de produits en beton Expired - Lifetime EP1212178B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI991690 1999-08-09
FI991690A FI109460B (fi) 1999-08-09 1999-08-09 Menetelmä ja laitteisto betonielementtien valamiseksi
PCT/FI2000/000633 WO2001010616A1 (fr) 1999-08-09 2000-07-10 Procede et appareil de production de produits en beton

Publications (2)

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

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ID=8555129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00948043A Expired - Lifetime EP1212178B1 (fr) 1999-08-09 2000-07-10 Procede et appareil de production de produits en beton

Country Status (8)

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

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

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