EP2671698B1 - Werkbank zur Herstellung von Balken durch Fließpressen - Google Patents

Werkbank zur Herstellung von Balken durch Fließpressen Download PDF

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Publication number
EP2671698B1
EP2671698B1 EP13170491.8A EP13170491A EP2671698B1 EP 2671698 B1 EP2671698 B1 EP 2671698B1 EP 13170491 A EP13170491 A EP 13170491A EP 2671698 B1 EP2671698 B1 EP 2671698B1
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EP
European Patent Office
Prior art keywords
retaining
longitudinal members
grid
teeth
deck
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.)
Active
Application number
EP13170491.8A
Other languages
English (en)
French (fr)
Other versions
EP2671698A1 (de
Inventor
Christophe Pacqueau
Frédéric Claverie
Jean Claude Legall
Thierry Haour
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.)
KP1 SAS
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KP1 SAS
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Priority to PL13170491T priority Critical patent/PL2671698T3/pl
Publication of EP2671698A1 publication Critical patent/EP2671698A1/de
Application granted granted Critical
Publication of EP2671698B1 publication Critical patent/EP2671698B1/de
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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
    • 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
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
    • 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
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/06—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation

Definitions

  • the invention relates to a bench for manufacturing girders by spinning, of the type known from the patent document FR241040 , that is to say comprising a rectangular decking of great length carrying a moving element moved at regular intervals along the decking to pour the concrete beams in successive series.
  • the mobile equipment comprises a grid resting on the decking, this grid being formed of a series of longitudinal members parallel to the longitudinal direction of the decking, laterally spaced from each other and rigidly secured to each other by a front cross member and a rear cross member located in the upper face of this grid.
  • the concrete is poured on the grid resting motionless on the decking, to form a series of beams, that is to say a beam in each space transversely separating two longitudinal members.
  • the moving equipment is then moved longitudinally before casting another series of beams spaced from the previous along the decking.
  • These manufactured beams are prestressed, that is to say that they integrate strained longitudinal metal wires or cables.
  • Each prestressing wire is stretched over the decking, and extends along the main direction of the decking being located between two longitudinal members of the grid.
  • several prestressing wires may extend between each pair of contiguous spars, being for example located one above the other.
  • the front end of the grid is equipped with a concrete retaining comb and guiding the prestressing wires to optimize their lateral and vertical positioning.
  • This mobile comb has a series of teeth interposed between the longitudinal members, and it is movable longitudinally with respect to the grid.
  • Each tooth of the comb has a section corresponding to the space between the two longitudinal members between which it is interposed, that is to say a shape corresponding to the section of beam to be manufactured, so as to retain the concrete.
  • Each tooth of this comb further comprises holes through which pre-stressing son to maintain these son in position.
  • each tooth is first engaged on the wire or son it must guide, before powering these son above the decking.
  • the grid is then applied to the decking, before engaging each tooth between the two longitudinal members that correspond to it.
  • a support beam is attached to the upper part of the teeth to be rigidly secured to these teeth so as to form the movable comb along the grid body.
  • the grid further comprises at its rear end a movable flap between a low concrete retaining position and a high release position.
  • a movable flap between a low concrete retaining position and a high release position.
  • the concrete When the grid is in place on the decking, with its mobile comb at its front end and its rear door in the low position, the concrete is poured into the spaces between each pair of contiguous spars, along the entire length of the grid. Additionally, it can be expected to vibrate this concrete and smooth its upper face to improve the quality of manufacture.
  • an operator blocks the mobile comb in translation relative to the decking, by means of appropriate equipment, and raises the rear door.
  • the grid can then be moved forward along the decking: the mobile comb relative to the grid being blocked in translation relative to the decking, it holds the concrete beams in place, while the rest of the grid with its Spars is moved forward.
  • An installation for manufacturing of prestressed concrete beams by spinning as defined in the preamble of claim 1 is already known from FR 2 152 604 A1 .
  • the object of the invention is to propose a solution to remedy this drawback.
  • the subject of the invention is an installation for the manufacture of prestressed concrete beams. by spinning according to claim 1.
  • the guide teeth being fixed relative to the longitudinal members of the grid, they provide guidance and therefore precise positioning of the prestressing wires, which makes it possible to reduce the rate of rejection due to the beams too strongly curved at the from their manufacture.
  • the invention also relates to an installation as defined above, further comprising means for locking the immovable holding comb in translation relative to the decking.
  • each concrete retaining tooth comprises a plurality of points for its vertical insertion straddling one or more prestressing cables.
  • the invention also relates to an installation as defined above, wherein the retaining comb is vertically movable relative to the longitudinal members between a low position in which the retaining teeth are inserted between the longitudinal members and a raised position in which the teeth restraint are released from the side members.
  • the idea underlying the invention lies in the finding that the teeth of the known machine insufficiently guide the prestressing cables because they have significant lateral play made necessary by their longitudinal mobility relative to the rest of the wire rack.
  • the invention is based on the separation between the yarn guiding function and the retaining function of the concrete: there is provided a fixed yarn guide comb and a movable concrete stopping comb which are separate for separately guiding the yarns and the retention of concrete.
  • the grid of the installation according to the invention which is represented in figure 1 1, comprises a set of longitudinal members 2 extending parallel to a longitudinal direction AX being spaced from each other laterally, that is to say transversely this direction AX.
  • These rails 2 are secured to each other by means of two cross members 3 and 4 respectively located at the front and rear of the assembly formed by the longitudinal members 2 being located on the upper face of these longitudinal members.
  • the assembly constituted by the longitudinal members 2 and the crosspieces 3 and 4 by which they are secured to each other constitutes a grid body, indicated by 6.
  • the longitudinal members 2 and the crosspieces 3 and 4 are metal sections of rectangular section, T, I, or other, and they are joined to each other by welding to the crosspieces 3 and 4.
  • the grid 1 is part of an unrepresented moving assembly, which is carried by a not shown deck, rectangular in shape and having a length much greater than the length of the grid 1.
  • the decking and the moving equipment are provided with means with which the moving element moves rectilinearly along the decking.
  • These guide means comprise for example two parallel side rails along the edges of the deck, the movable assembly being provided with corresponding wheels by which it rolls on these rails.
  • the mobile equipment typically carries means for pouring concrete on the grid 1 and means for vibrating the concrete once poured, so that it fills correctly by thixotropic effect each space between two longitudinal members.
  • the installation further comprises, at each end of the decking, means for setting in position of prestressing wires and mechanical stressing of these stress wires which are marked by 7 in the figure 1 .
  • These son extend parallel to each other above the flat upper face and metal decking, being laterally spaced from each other by a distance corresponding to the distance separating each pair of contiguous spars 2.
  • each prestressing wire 7 passes between two longitudinal members 2 of this grid, to be coated by the constituent concrete of the beam manufactured between the two longitudinal members in question.
  • the gate body 6 is equipped on the one hand with a concrete retaining comb 8 which is movable in translation relative to the gate body 6 in the longitudinal direction AX, and on the other hand a fixed comb 9 for guiding the prestressing wires which is rigidly secured to the gate body 6 when the gate 1 is in use.
  • the mobile concrete retaining comb 8 comprises a series of retaining teeth 11, one of which is shown in greater detail in the figure 2 . As visible in this figure, this tooth 11 has two points or branches 12 and 13, intended to overlap a prestressing wire extending on either side of it while fitting into the space delimited by two contiguous spars 2.
  • the points 12 and 13 of each tooth 11 is spaced from each other by a distance significantly greater than the diameter of the prestressing wires 2, so as not to modify the lateral or vertical position of the prestressing wires.
  • the width of the assembly constituted by the two points is substantially less than the distance separating two longitudinal members 2 contigus so as to provide sufficient lateral clearance to allow unhindered sliding of the mobile comb 8 along the side members.
  • each tooth 11 relatively imperfectly close the section in which they are engaged, delimited by the two longitudinal members 2 between which is engaged the tooth 11, but this relatively imperfect closure remains sufficient to retain the concrete in place when it bears on these teeth 11.
  • the different double teeth 11 of the mobile comb 8 are carried by a main cross member 14 to which they are welded by their respective upper ends, this upper cross member resting on the upper face of the longitudinal members 2.
  • the main cross member 14 is oriented transversely and extends laterally beyond the gate body 6. This cross member 14 is provided at its free ends with means not shown for its immobilization relative to the deck, to pull the gate body 6 along the decking by sliding it in the immobilized comb 8, which corresponds to the situation of the figure 1 .
  • This movable retaining comb 8 can advantageously be raised and lowered at will with respect to the grid body 6, which allows it to be reassembled to remove the residual concrete remained attached to its teeth in order to effectively clean this mobile comb 8 in progress. exploitation.
  • the comb 9 for guiding the prestressing wires which is fixed with respect to the gate body 6 when the installation is in use, comprises a series of guide teeth 16 each inserted between two contiguous longitudinal members 2. As visible in FIG. figure 3 , this fixed guide comb 9 also comprises a cross member 17, which is welded to the upper face of the gate body 6, and serving to secure each tooth 16 to the gate body.
  • the cross member 17 has at one of its transverse edges a notch at each interval separating two side members 2 contiguous. Each notch extends longitudinally in the direction AX, and each tooth 16 has its body engaged between the two longitudinal members 2, and its upper head recessed or nested in the corresponding notch of the crosspiece 17. This embedding can optionally be achieved by force with a mass.
  • Additional locking means of each tooth 16, not shown, may also be provided.
  • a removable additional crossbar can be reported, after embedding all the teeth 16, along the edge of the cross member 17 which has the notches, which then allows to completely imprison each tooth head 16 to rigidly secure to the grid body.
  • Each tooth 16 may for example be made of plastic material, being dimensioned to close the section separating two side members 2 contiguous with the lowest possible clearance. As visible in the figure 3 each tooth 16 has one or more through holes 18 passing through the tooth in the longitudinal direction AX when the assembly is in use.
  • Each through hole 18 has a diameter very close to the diameter of the prestressing wires 2: the vertical and lateral position of the wires in the section of the beam is thus defined by the position of the through holes 18 of the guide teeth 16.
  • each guide tooth 16 can bear on the side faces of the longitudinal members 2 between which it is inserted.
  • a wedge system placed between the lateral surface of the tooth 16 and the lateral surface of the spar 2 can also be provided to laterally position the tooth 16 very precisely in the lateral direction.
  • the positioning teeth 16 are engaged on the prestressing wires 7 during the installation of these prestressing wires on the decking.
  • the moving equipment is then installed on the decking, after which the positioning teeth 16 are engaged in their slots and notches at the grid 1, and they are locked in these locations.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Claims (4)

  1. Anlage zum Herstellen von Spannbetonträgern mittels Fließpressen, umfassend:
    - eine ortsfeste rechteckige Metallauflage, die sich horizontal erstreckt und dabei in Längsrichtung (AX) ausgerichtet ist,
    - eine bewegliche Anordnung, die von der Auflage getragen wird und ein Gitter (1) umfasst, das eine Reihe von Längsprofilen (2) einschließt, die seitlich zueinander beabstandet sind, während sie starr aneinander befestigt sind,
    - Führungsmittel zum Führen der beweglichen Anordnung entlang der Auflage,
    - Haltemittel zum Halten einer Gesamtheit von Vorspannkabeln (7), die sich in Längsrichtung über der Auflage erstrecken, wobei jedes Kabel (7) dazu bestimmt ist, sich zwischen zwei Längsträgern (2) des Gitters (1) zu platzieren,
    um Reihen von Trägern herzustellen, indem für jede Reihe Beton in die Zwischenräume gegossen wird, die die Längsträger (2) des auf der Auflage fixierten Gitters (1) seitlich trennen, ehe dieses Gitter (1) entlang der Auflage verschoben wird, um das Gießen einer neuen Reihe von Trägern durchzuführen, bis die gesamte Länge der Auflage durchlaufen worden ist, dadurch gekennzeichnet, dass diese Anlage an ihrem vorderen Ende umfasst,
    - einerseits Führungszähne (16) zum Führen der Kabel (7), die jeweils zwischen zwei benachbarte Längsträger (2) eingefügt werden, wobei diese Führungszähne (16) starr mit dem Gitter (1) verbunden und zu keinem Zeitpunkt in Kontakt mit dem Beton sind, wenn die Anlage in Betrieb ist,
    - andererseits Rückhaltezähne (11) zum Zurückhalten des Betons, die jeweils zwischen zwei benachbarte Längsträger (2) eingefügt werden, während sie von den Führungszähnen (16) zum Führen der Kabel (7) getrennt sind,
    wobei diese Rückhaltezähne mittels eines Querträgers (14) miteinander verbunden sind, um einen Rückhaltekamm (8) zu bilden, der in einer Längstranslation relativ zu den Längsträgern (2) beweglich ist, ohne die Vorspannkabel (7) zu behindern.
  2. Anlage nach Anspruch 1, ferner umfassend Blockiermittel zum Blockieren des Rückhaltekamms (8) translationsfest relativ zur Auflage.
  3. Anlage nach Anspruch 1 oder 2, wobei jeder Rückhaltezahn (11) zum Zurückhalten des Betons mehrere Spitzen (12, 13) umfasst, die sein vertikales Einfügen auf einem oder mehreren Vorspannkabeln (7) ermöglicht.
  4. Anlage nach einem der Ansprüche 1 bis 3, wobei der Rückhaltekamm relativ zu den Längsträgern vertikal zwischen einer unteren Position, in der die Rückhaltezähne (11) zwischen den Längsträgern (2) eingefügt sind, und einer angehobenen Position beweglich ist, in der die Rückhaltezähne (11) von den Längsträgern (2) gelöst sind.
EP13170491.8A 2012-06-07 2013-06-04 Werkbank zur Herstellung von Balken durch Fließpressen Active EP2671698B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13170491T PL2671698T3 (pl) 2012-06-07 2013-06-04 Stanowisko do produkcji beleczek przez wyciskanie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1255315A FR2991621B1 (fr) 2012-06-07 2012-06-07 Banc de fabrication de poutrelles par filage

Publications (2)

Publication Number Publication Date
EP2671698A1 EP2671698A1 (de) 2013-12-11
EP2671698B1 true EP2671698B1 (de) 2015-12-23

Family

ID=47022748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13170491.8A Active EP2671698B1 (de) 2012-06-07 2013-06-04 Werkbank zur Herstellung von Balken durch Fließpressen

Country Status (5)

Country Link
EP (1) EP2671698B1 (de)
ES (1) ES2560410T3 (de)
FR (1) FR2991621B1 (de)
PL (1) PL2671698T3 (de)
PT (1) PT2671698E (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2593933B1 (es) * 2015-06-09 2017-09-07 Pacadar S.A. Método y utillaje para la fabricación por moldeo de elementos de hormigón pretensados
CN111186012A (zh) * 2020-01-17 2020-05-22 中铁三局集团有限公司 一种铁路用轨道板自动化生产线

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2172506A5 (de) * 1972-02-15 1973-09-28 Saret
FR2152604B1 (de) * 1972-09-01 1974-08-19 Saret
CA1100297A (en) * 1977-10-28 1981-05-05 Norman W. Bunn Reinforcing member support in concrete extruders
OA06092A (fr) * 1978-03-30 1981-06-30 Saret Perfectionnements à un procédé et une installation de fabrication d'éléments en béton armé, notamment en béton précontraint.

Also Published As

Publication number Publication date
FR2991621A1 (fr) 2013-12-13
FR2991621B1 (fr) 2014-06-20
EP2671698A1 (de) 2013-12-11
ES2560410T3 (es) 2016-02-18
PL2671698T3 (pl) 2016-05-31
PT2671698E (pt) 2016-03-16

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