EP0558590B1 - Appareil de fabrication de traverses en beton precontraint pour chemins de fer, et traverses ainsi obtenues - Google Patents

Appareil de fabrication de traverses en beton precontraint pour chemins de fer, et traverses ainsi obtenues Download PDF

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Publication number
EP0558590B1
EP0558590B1 EP91920859A EP91920859A EP0558590B1 EP 0558590 B1 EP0558590 B1 EP 0558590B1 EP 91920859 A EP91920859 A EP 91920859A EP 91920859 A EP91920859 A EP 91920859A EP 0558590 B1 EP0558590 B1 EP 0558590B1
Authority
EP
European Patent Office
Prior art keywords
mould
segments
supporting
ties
beams
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
EP91920859A
Other languages
German (de)
English (en)
Other versions
EP0558590A1 (fr
Inventor
Hendrik Willem Bennenk
Cornelis Quartel
Adrianus Rijken
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.)
Spanbeton BV
Original Assignee
Spanbeton BV
Schokbeton NV
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Publication date
Application filed by Spanbeton BV, Schokbeton NV filed Critical Spanbeton BV
Publication of EP0558590A1 publication Critical patent/EP0558590A1/fr
Application granted granted 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
    • 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

Definitions

  • This invention relates to an apparatus for manufacturing prestressed concrete piles or beams, in particular railway ties, which apparatus comprises a casting mould which is lengthwise divisible into segments, adjacent mould segments being interconnected by at least one open passage of trapezoidal cross-section surrounding continuous prestressing wires, each segment having the length of one beam to be formed, with wire tensioning devices being arranged at the ends of the casting mould for tensioning the prestressing wires running through the segments, such that said prestressing wires, upon hardening of the concrete poured into the casting mould, may be cut between the respective segments at a cutting station to obtain separate prestressed beams of a length determined by the mould segments.
  • the prestressing wires are cut between adjacent end partitions by means of a welding torch, for instance, and the separate beams can be removed from the segments of the mould.
  • the mould used in this known apparatus is composed of a number of separate mould parts, each having a length of a restricted number of ties, i.e. two or four ties, which mould parts have to be lowered one after the other, the supporting function of a lowered mould part being replaced by a movable carriage or portal before adjacent mould parts are to be lowered.
  • Partition walls between adjacent beams or ties are still necessary and they are to be removed separately.
  • Fig. 1 shows a tie 1 to be manufactured in the casting position.
  • the profile of the tie is determined on the basis of the strength and rigidity requirements the tie 1 must meet.
  • Shown on opposite sides of the tie 1 are adjacent ties 1' which are connected to tie 1 via a transitional area 3 before the ties 1, 1' are separated from each other by making a saw cut in planes Z.
  • the ties 1, 1' are manufactured in a casting mould whose shape is naturally determined by the profile of the ties and which extends in longitudinal direction over the length of a multiplicity of ties, for instance thirty-five.
  • the mould is accordingly divided into segments of a length L which corresponds to the length of the tie to be manufactured, i.e. approximately 250 cm, said segments being interconnected via transitional areas 3.
  • the transitional area 3 has a cross-section in the shape of a trapezoid 4, as indicated by dotted lines in the side elevation of Fig. 3. Consequently, after making the saw cuts in planes Z, the end face 7 of a tie comprises a projection 4 of trapezoidal cross-section, which includes all prestressing wires 6. To reduce the amount of concrete to be sawn through, it is preferred that instead of a single trapezoidal projection, two trapezoidal projections 5 are provided, disposed on opposite sides of the median plane of the tie 1, as shown in solid lines in Fig. 3. It will be clear that in that case the transitional area 3 also has a cross-section in the form of the two projections 5.
  • Fastening devices 2 such as plugs must be cast along with tie 1, so as to permit bolts to be screwed into them for securing the rail tracks to the tie.
  • FIG. 4 is a section taken in the saw plane Z of Fig. 1.
  • the elongated casting mould 16 is supported by a series of supporting frames 10 anchored to the floor by means of bolts 11.
  • Each supporting frame 10 essentially consists of two side plates 12 interconnected by means of transverse connections 13, 14, 15.
  • the transverse connection 13 consists of a crossbeam on which the mould 16 is mounted.
  • the dotted lines within the mould indicate the profile 17 of the tie, while the solid lines indicate the transitional area 3 in section, which section corresponds to the shape of the trapezoidal projections 5.
  • the mould 16 is in the casting position.
  • Mounted in the crossbeam 13 adjacent the end faces are supporting pins 18 comprising cylindrical projections 19.
  • the projections 19 are locked in a vertical slot 20 provided in the side plates 12.
  • a control plate 21 Extending on opposite sides of the mould throughout the length thereof, is a control plate 21 provided with slots 22 extending substantially obliquely (Fig. 5) in which the projection 19 is mounted.
  • the control plate 21 can be moved to and fro in horizontal direction by means of a hydraulic cylinder 23 and guide rollers 24, 25 provided at the top and the bottom of the control plate 21 in each supporting frame 10.
  • the means of supporting the hardened ties in the casting position are formed by vertical rods 34, supported in each frame 10 by a supporting beam 14. These supporting rods 34 are arranged in each frame 10 adjacent the transitional area 3 (see Fig. 1). The rods 34 extend through the crossbeam 13 and in the upper position the end faces of the rods 34 are disposed precisely at the level of the bottom surfaces of the trapezoidal projections 5.
  • the supporting beam 14 for the rods 34 can be moved vertically in a manner corresponding to the displacement of the crossbeam 13.
  • the end faces of the supporting beam 14 are provided with pins 30 having connected thereto a cylindrical projection 31.
  • the projections 31 are mounted in a vertical slot 32 provided in the two side plates 12 of a frame 10.
  • a pivot 15 Arranged under the supporting beam 14 in each frame 10 is a pivot 15 having mounted thereon two cam discs 33 abutting on the inside against the side plates 12.
  • the cam discs 33 are fixedly connected to the pivot 15.
  • the cam discs 33 (see Fig. 7) comprise a slotted curved track 35 in which the projection 31 of the supporting beam 14 is received. By pivoting the pivot 15, the projections 31 are forced to move vertically downwards in the slots 32, whereby the supporting rods 34 are pulled from their upper position and finally reach the retracted position shown in dotted lines in Fig. 4.
  • the path traveled by the supporting rods 34 in vertical direction is shorter than the vertical path of travel of the mould 16.
  • a crank 36 connected to pivot 15 The pivoting movement of the pivot 15 is effected by a crank 36 connected to pivot 15, the end of the crank 36 being connected to a hydraulic cylinder (not shown).
  • a hydraulic cylinder (not shown).
  • all pivots 15 of the various supporting frames 10 can be pivoted simultaneously, so that in each supporting frame 10 the supporting rods 34 can be moved in upward or downward direction simultaneously.
  • Fig. 6 shows the position in which the ties 1, still interconnected at the transitional areas 3, are supported in hardened condition by the supporting rods 34, while the moulds 16 (not shown) are arranged in the lower position.
  • the manufacture of ties of prestressed concrete using the apparatus according to the invention comprises the following steps:

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  • 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)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

Appareil de fabrication de pieux ou de poutres en béton précontraint, et notamment de traverses de chemin de fer. L'appareil comporte un moule de coulage séparable en segments dont chacun a la même longueur que la poutre que l'on veut obtenir. Des dispositifs de mise en tension des fils de précontrainte traversant les segments sont disposés aux extrémités du moule de coulage. Lors du durcissement du béton dans le moule, on peut sectionner les fils entre les segments respectifs à l'aide d'un dispositif de coupe afin d'obtenir des poutres précontraintes séparées dont la longueur est déterminée par les segments du moule. Les segments voisins sont reliés les uns aux autres par au moins un passage ouvert (3) de section trapézoïdale entourant les fils continus de précontrainte (6), le moule (16) est porté par un organe porteur (13) apte à se déplacer dans le sens vertical, et des tiges de support verticales (34) sont disposées au niveau de chaque passage ouvert (3) entre des segments voisins du moule. Ces tiges de support (34) traversent le fond du moule (16) et peuvent se déplacer indépendamment de celui-ci dans le sens vertical. Après le durcissement du béton dans le moule (16), les poutres (1, 1') reliées les unes aux autres sont toujours soutenues par les tiges de support (34) pendant le démoulage réalisé lorsque le moule (16) se déplace vers le bas.

Claims (7)

  1. Dispositif pour la fabrication de pieux ou de poutres (1) en béton précontraint, en particulier de traverses de chemin de fer, ce dispositif comprenant un moule de coulée (16) qui est divisible en segments selon sa longueur, des segments de moule adjacents étant interconnectés par au moins un passage ouvert (3) ayant une section droite trapézoïdale entourant des câbles de pré-contrainte continus (6), chaque segment présentant la longueur de la poutre (1) devant être formée, avec des dispositifs tensionneurs de câbles disposés aux extrémités du moule de coulée (16) afin de mettre sous tension les câbles de pré-contrainte (6) qui circulent au travers des segments de manière que lesdits câbles de pré-contrainte (6), lors de la prise du béton versé dans le moule de coulée (16) puissent être coupés entre les segments respectifs, en un poste de coulée, afin d'obtenir des poutres pré-contraintes séparées (1) ayant une longueur déterminée par les segments de moule, caractérisé en ce que :
    - le moule (16) est un élément en une pièce, et il est supporté par des éléments de support (13) qui peuvent être déplacés dans une direction verticale et
    - des tiges de support orientées verticalement (34) sont prévues sur chacun des passages ouvert (3) entre dos segments de moule adjacents, lesdites tiges de support (34) s'étendant au travers du fond du moule (16) et pouvant se déplacer dans une direction verticale, séparément du moule (16),
    - la disposition étant telle qu'après la prise du béton versé dans le moule (16), les poutres interconnectées (1, 1') restent supportées par les tiges de support (34), lors de là libération du moule, par un déplacement vers le bas de ce moule (16).
  2. Dispositif selon la revendication 1 caractérisé en ce que les moyens de support (13) pour le moule (16) sont constitués de poutres transversales (13) disposées à chaque transition (3) entre des segments adjacents (1, 1'), lesdites poutres transversales (13) comprenant chacune, à leurs doux extrémités, une saillie circulaire (19), lesdites saillies (19) étant supportées dans des plaques latérales (12) d'un bâti de support (10), pour un déplacement vertical.
  3. Dispositif selon la revendication 2 catactérisé en ce que les saillies (19) de chaque poutre transversale (13) sont maintenues verrouillées dans des fentes verticales (20) prévues dans les plaques latérales (12) de chaque bâti de support (10) et on outre elles sont verrouillées dans des fentes (22) s'étendant obliquement, prévues dans une plaque de commande (21) qui est disposée latéralement par rapport à chaque plaque latérale (12), qui peut être déplacée horizontalement et qui s'étend au travers de la longueur du moule (16).
  4. Dispositif selon la revendication 3 caractérisé en ce que les plaques de commande (21) sont verrouillées en position verticale entre des rouleaux de guidage (24, 25) montés dans les plaques latérales (12) de chaque bâti de support (10)
  5. Dispositif selon l'une quelconque des revendications 1 à 4 caractérisé en ce que les tiges de support orientées verticalement (34) dans chaque bâti de support (10) sont supportées par une poutre support (14) que est prévue à leurs extrémités, avec des saillies latérales (31) qui sont verrouillées dans des fentes verticales (32) prévues dans les plaques latérales (12), et l'on prévoit en outre un mécanisme de commande afin de déplacer la poutre de support (14) dans une direction verticale.
  6. Dispositif selon la revendication 5 caractérisé en ce que le mécanisme de commande (33) comprend deux disques à came identiques (33), chacun pourvu d'une piste incurvée et munie d'une fente (35) destinée à recevoir une partie en saillie (31) de la poutre support (14), les deux disques à came (33) étant reliés fixement à un pivot (15) monté dans le bâti support (10), ce pivot (15) pouvant être entrainé en rotation par un vérin hydraulique (37).
  7. Traverse de chemin de fer en béton pré-contraint comprenant des faces d'extrémités non parallèles (7) avec au moins une saillie trapézoïdale s'étendant vers l'extérieur (4) caractérisée en ce que les deux côtés non parallèles de la saillie trapézoïdale divergent dans la même direction que les faces d'extrémités non parallèles de la traverse de chemin de fer.
EP91920859A 1990-11-20 1991-11-20 Appareil de fabrication de traverses en beton precontraint pour chemins de fer, et traverses ainsi obtenues Expired - Lifetime EP0558590B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL9002531A NL9002531A (nl) 1990-11-20 1990-11-20 Inrichting voor het vervaardigen van voorgespannen betonnen dwarsliggers voor spoorrails, alsmede dwarsliggers vervaardigd onder toepassing van deze inrichting.
NL9002531 1990-11-20
PCT/NL1991/000235 WO1992008589A1 (fr) 1990-11-20 1991-11-20 Appareil de fabrication de traverses en beton precontraint pour chemins de fer, et traverses ainsi obtenues

Publications (2)

Publication Number Publication Date
EP0558590A1 EP0558590A1 (fr) 1993-09-08
EP0558590B1 true EP0558590B1 (fr) 1994-08-24

Family

ID=19858006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91920859A Expired - Lifetime EP0558590B1 (fr) 1990-11-20 1991-11-20 Appareil de fabrication de traverses en beton precontraint pour chemins de fer, et traverses ainsi obtenues

Country Status (10)

Country Link
EP (1) EP0558590B1 (fr)
KR (1) KR930703126A (fr)
AR (1) AR245967A1 (fr)
CS (1) CS351191A3 (fr)
DE (1) DE69103638T2 (fr)
ES (1) ES2064124T3 (fr)
MY (1) MY110432A (fr)
NL (1) NL9002531A (fr)
PL (1) PL167856B1 (fr)
WO (1) WO1992008589A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116819B1 (es) * 1994-01-11 1999-03-16 Alvistranvi S A Procedimiento de fabricacion de traviesas polivalentes.
KR100243969B1 (ko) * 1997-11-10 2000-02-01 허규태 콘크리이트 침목의 제조 방법(Method for manufacturing concrete sleeper)
KR100243970B1 (ko) * 1997-11-10 2000-02-01 허규태 콘크리이트 침목의 제조 장치(Apparatus for manufacturing sleeper)
KR100243972B1 (ko) * 1997-12-09 2000-02-01 허규태 침목 제조용 와이어 절단장치(Wire cutting apparatus for manufacturing sleeper)
CN100558523C (zh) * 2008-06-05 2009-11-11 中铁十四局集团有限公司 分离张拉力活壳体轨枕模具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT271298B (de) * 1964-11-20 1969-05-27 Josef Proksch Grundplatte und Verfahren zur Herstellung einer Großformatbauplatte
US3832118A (en) * 1972-05-08 1974-08-27 Span Deck Inc Apparatus for production of cast concrete members
US4102957A (en) * 1975-11-20 1978-07-25 Canfarge Ltd (Francon Division) Apparatus and method for manufacturing prestressed concrete railway ties
SE408535B (sv) * 1977-04-29 1979-06-18 A Betong Ab Sett att i en lang formbedd tillverka flera pa varandra foljande byggnadselement samt formbedd for utforande av settet
FR2458368A1 (fr) * 1979-06-13 1981-01-02 Freyssinet Int Stup Procede et dispositif de demoulage d'elements en beton precontraint moules sur un long banc

Also Published As

Publication number Publication date
WO1992008589A1 (fr) 1992-05-29
AR245967A1 (es) 1994-03-30
ES2064124T3 (es) 1995-01-16
KR930703126A (ko) 1993-11-29
CS351191A3 (en) 1992-06-17
EP0558590A1 (fr) 1993-09-08
DE69103638D1 (de) 1994-09-29
NL9002531A (nl) 1992-06-16
MY110432A (en) 1998-05-30
DE69103638T2 (de) 1995-04-13
PL167856B1 (en) 1995-11-30

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