EP0012069A1 - Factory-type installation with a rotating drum for producing concrete, reinforced concrete and/or prestressed concrete products - Google Patents

Factory-type installation with a rotating drum for producing concrete, reinforced concrete and/or prestressed concrete products Download PDF

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Publication number
EP0012069A1
EP0012069A1 EP79400902A EP79400902A EP0012069A1 EP 0012069 A1 EP0012069 A1 EP 0012069A1 EP 79400902 A EP79400902 A EP 79400902A EP 79400902 A EP79400902 A EP 79400902A EP 0012069 A1 EP0012069 A1 EP 0012069A1
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EP
European Patent Office
Prior art keywords
drum
concrete
carriage
molds
products
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EP79400902A
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German (de)
French (fr)
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EP0012069B1 (en
Inventor
Mircéa Borcoman
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Individual
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Individual
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Priority to AT79400902T priority Critical patent/ATE2405T1/en
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    • 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
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/10—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds carried on the circumference of a rotating drum

Definitions

  • the invention relates to a factory for the manufacture of concrete, reinforced concrete and / or prestressed concrete products, of the type which include a rotary drum with horizontal axis of rotation, provided with molding means on its external cylindrical surface. and suitable for passing, during its rotation, said molding means in front of various work stations, in particular concreting, hardening, demoulding and reinforcement positioning stations.
  • a plant of this kind is known in particular from American patent 3,720,493.
  • the object of the invention is, above all, to make factories of the kind in question such that they better meet the various requirements of practice than hitherto, and in particular such that they make it possible to carry out, with a minimum of adaptation, a wide variety of product types, and ensuring the manufacture of good quality products.
  • each beam consists of a base part, substantially rectangular, situated against the peripheral surface of the drum and a T-part fixed, by its central branch, at mid-width on the part of base, the areas of the base part located on either side of the central branch of the T serving as a raceway, while the crossbar of the T is intended to receive support means, in particular elastic, for molds .
  • the molding means comprise, in their part facing the drum, a resistance element extending longitudinally, provided with attachment means for the compacting means, this resistance element as well as the attachment means being identical which that either the type of mold for the various kinds of products to be manufactured, the lower part of the mold being connected, in particular by joints, to lateral shells whose shape is determined by the type of product to be produced; closure covers are optionally provided to cover the free face of the concrete during the heat treatment.
  • the concreting installation comprises a carriage whose length, in a direction parallel to the axis of the drum, is substantially equal to that of the drum, this carriage comprising two levels and being located above the most generatrix high of the drum, the upper level of this carriage comprising at least one container for receiving concrete and means for allowing the flow of concrete in the molds, the above-mentioned carriage being suitable for rolling, at its upper level, on rolling means carried by a fixed frame, the above-mentioned carriage comprising a second level or level lower fitted with compacting means suitable for rolling on the raceway of the beams integral with the drum, hooking means being provided for blocking the compacting means on the bottom of the molds during the compacting phase, the two levels of the carriage being linked by a frame, and means back and forth being provided to move the carriage so that it can occupy a working position for which its upper level is above the molds stopped at the top of their trajectory, while that the lower level of the carriage is located below these molds, or an exit position for which the carriage is located
  • the plant includes a heat treatment installation advantageously constituted by a chamber, closed inwards by the drum itself, outwards (in the radial direction), by walls, in particular polygonal, at the ends in the axial direction by screens, and radially by movable curtains provided with winding, guiding and mounting means, this heat treatment chamber being provided with means for distributing, adjusting and recovering the thermal agent.
  • this demoulding and evacuation installation advantageously comprises a frame capable of moving in a radial direction, in particular in the horizontal plane passing through the axis of the drum, this frame carrying a rotary beam on which are gripped means unmolded products, this beam can perform a rotation, with the gripping means, so as to ensure the evacuation of the molded products gripped by the gripping means.
  • the rotary drum factory can consist of several removable sub-assemblies, each sub-assembly having an acceptable size for transport by road.
  • the rotary drum factory can be mounted in a ship's hull to form a floating factory.
  • the rotary drum can be mounted in a floating shell C (fig. 4), with all the ancillary installations of the factory, so as to create a "floating factory with rotating drum”.
  • the rotary drum T (fig. 1 to 8) is constituted by a rotary structure having on its entire outer periphery beams with compound profile 9, forming a series of mold support benches, welded parallel to the horizontal axis of rotation so to reinforce the structure to make it capable of supporting not only the loads due to the molds filled with concrete, but also the efforts coming from the tensioning of the reinforcements or the strands during the manufacture of products in prestressed concrete.
  • Said rotary structure comprises curved sheets 1 (see in particular Figure 8), reinforced by beams 2 and assembled using means 3, formed for example by connection plates, and two head walls 4 (fig. 1 and 4) arranged in the form of a cylinder.
  • two tubular support beams 5, integral with the walls 4, carried by two bearings 6; means for driving in rotation 7 (FIGS. 2 and 4) of the drum and means for blocking 8 in rotation of this drum are also provided.
  • each beam 9 comprises, in addition to the base part 9c, a T-shaped part 9d fixed by its central branch, oriented radially, on the part of base 9c; the areas of the base part 9a, 9b located on either side of the central branch of the T constitute the above-mentioned raceway for the compacting means.
  • the transverse bar 9e of the T is intended to receive the means for supporting the molds.
  • Gussets 9f spaced apart from one another in the longitudinal direction, are situated in planes perpendicular to the longitudinal axis of the drum and are fixed, in particular by welding, to the central and transverse branches of the part 9d and to the upper part of the basic part 9c.
  • the fasteners are preferably made by welding.
  • the molding means M (FIGS. 5 to 8) comprise, at their part facing the drum, a resistance element 13 extending longitudinally and provided with attachment means 13a for the compacting means 29, 30.
  • This element of resistance 13 as well as the hooking means 13a remain identical regardless of the type of mold for the various kinds of products to be manufactured, so that the compacting means can be hung, under identical conditions, whatever the types of product to be manufactured.
  • This resistance element 13 may consist of two U-shaped cross-section beams, oriented longitu linearly with their concavity turned in the opposite direction, outward in the peripheral direction, the wings of the U being situated in planes parallel to the axis of the drum; these two beams are joined by a series of assembly gussets 14.
  • the lower part of the mold is connected to one or more shells designed according to the product to be produced, either as a fixed shell 15 (see in particular FIG. 7) or as a mixed shell having fixed parts 16, and / or folding parts 17 mounted on connecting joints with the lower part and / or movable shells 18 (see in particular Figure 5).
  • Clamping means 19 in particular for holding the folding shells 17 in the molding position are provided.
  • the molding means are provided with a cover 20 for closing the free face of the concrete during the heat treatment.
  • the concreting installation B (fig. 1 to 5) comprises a feed hopper 21, a buffer hopper 22 and a carriage 23 movable in a direction parallel to the axis of the drum, above the highest generator of the drum.
  • the length of the carriage 23, in the direction parallel to the axis of the drum, is substantially equal to that of the drum; the carriage 23 can be placed entirely above the drum, or be disengaged, in the longitudinal direction, entirely beyond the drum.
  • the carriage 23 has two levels; the upper level of this carriage comprises one or more interchangeable containers 23 a , carried by a frame 24; this frame is provided with two head platforms 25, one or more closing hatches 26 and an adjustable neck 27; the frame 24, moreover, is equipped with rolling means 28a suitable for rolling on rails 28c (FIG. 5) carried by a fixed frame.
  • the neck 27 of the frame 24 is clean to come above the molding means M located at the upper part of the drum, so as to allow the flow, by gravity, of the concrete in the molds.
  • the above-mentioned carriage comprises a second level or lower level provided with compacting means 29, 30, suitable for being introduced, by longitudinal displacement of the carriage, below the molding means located at the upper part of the drum.
  • the compacting means comprise a vibrating beam29 provided with rolling means 28b, suitable for rolling on the rolling tracks 9a, 9b and two or more vibrators 30.
  • the beam 29 is, moreover, fitted with hooking devices 31 of said beam on the attachment means 13a of the resistance element 13 of the molding means (fig. 5).
  • the upper level and the lower level of the carriage are connected by a frame 32 so as to move as a unit.
  • the frame 32 is provided with a platform 33 supporting means of "back and forth” 34 provided to move the carriage in two levels in a movement of "back and forth", and various devices necessary for the automatic operation of the vibrators
  • the hooking devices 31 comprise jacks 35 able to move bent arms tightening the resistance element 13 against the vibrating beam.
  • the two-level trolley can occupy a working position for which the upper level of the trolley is above the molds stopped at the top of their circular trajectory, while the lower level of the trolley is located below these molds, or in an exit position for which the carriage is located, in the longitudinal direction, entirely outside the drum.
  • said carriage takes the containers 23, filled with fresh concrete, above the molds, and the vibrating beam 29 above. below these molds. Stopping the carriage in the working position controls the attachment of said beam 29 to the resistance elements 13 using the devices 31. The completion of this attachment operation controls the opening of the doors 26 and the discharge fresh concrete in the molds; the activation of the vibrators 30 is also controlled. The duration of the compaction produced by the vibrations is chosen for each product according to the characteristics of the concrete used.
  • the vibrators 30 are stopped, as well as the release of the beam 29 ; the hatches 26 close and the two-level carriage begins its return stroke (from left to right according to FIGS. 2 to 4) so as to exit completely, in the longitudinal direction, relative to the drum.
  • the containers 23 pass below the buffer hopper 22 and fill with fresh concrete for the next pouring operation.
  • the platform 25 located on the right side of the frame 24 ensures the closing of the buffer hopper 22 during the time interval when the pouring of the concrete into the molding means M takes place; the platform 25 located on the left side of the frame 24, according to Figures 2 and 4, ensures the closure of the hopper 22 when the carriage is completely outside the drum, and during the rotation of a step of this drum, rotation which brings the following molding means to the top of their circular trajectory, with a view to pouring the concrete in these molding means.
  • the TT heat treatment installation (see in particular FIGS. 1 and 3) consists of a chamber closed, inwards in the radial direction, by the drum itself, the peripheral surface of which is produced by the sheets 1 which form a cylinder continued ; this room is also closed, radially outwards, by walls 36, in particular of polygonal cross section; the chamber is closed at its heads, that is to say at its ends in the longitudinal direction, by screens 37 and, radially, by flexible movable curtains 38.
  • these curtains 38 (fig. 6) are provided with means -39 "winding of guide means 40 and 'mounting means 41.
  • the heat treatment chamber TT is provided with means 42 for distributing a thermal agent (steam, hot water, or the like), means for adjustment 43 of the flow rate of thermal agent and of means 44 for recovering this thermal agent; the hardening of the concrete can thus be carried out gradually with the passage of the molds, filled with concrete, through this heat treatment chamber. the rotation of the entire rotating drum, at a determined rate.
  • a thermal agent steam, hot water, or the like
  • the demoulding and evacuation installation for molded products DE (fig. 1, 3 and 6) is advantageously placed at 270 ° relative to the concrete pouring station, according to the direction of rotation of the drum represented by an arrow on the fig. 1 and 3.
  • This demolding installation comprises a frame formed by a beam 45 connecting two head screens 46; this frame is, moreover, provided with rolling means 47 so as to be able to move on a rolling path 47a, in a radial direction situated in the horizontal plane passing through the axis of the drum.
  • Displacement means 48 (for example assembly: motor, pinion, rack) are provided to allow to communicate to the frame a movement of "back and forth" in the radial direction.
  • the head screens 46 of the frame serve as support for a rotary beam 49 rotatably mounted in two bearings 50 supported by the head screens.
  • Two cylinders 51 articulated, at one end, on a pivot integral with the frame and, at their other end, on a pivot integral with the beam 49 are provided for order a rotation at an angle of 90 °, in one direction or the other, of this beam.
  • Said beam 49 is equipped with gripping means 53, 54, 55, molded products p, suitable for gripping these products and for removing them.
  • the gripping means are supported by gussets 52 secured to the beam 49; these gripping means comprise, on the one hand, a series of suction cups 53 mounted by means of interchangeable heads 54 on a longitudinal beam 55 which can be moved radially, relative to the drum.
  • the beam 55 is equipped with rollers 57 and means 56 for guiding its movements; means 58, in particular formed by jacks, are provided to ensure a back-and-forth movement of the beam 55.
  • the gripping means comprise, on the other hand, 1 of the support elements 59, formed by a series fingers, mounted in guides 60 and provided with means 61, such as jacks, capable of ensuring a "back-and-forth” movement; these fingers 59 can be slid under the hardened products during demolding (see fig. 6).
  • the rotation of 90 ° of the beam 49, in the clockwise direction, is controlled by the jacks 51 so as to place the gussets 52 in a vertical position; the jack 58, the axis of which is then vertical, then controls the descent of the beam 55 until the product p comes into the position shown in dotted lines in FIG. 6, to rest on a roller chain 62, or on another means of transport, for the evacuation of the products.
  • the vacuum which, until now, had been maintained in the suction cups 53 to ensure the grip of the product p is eliminated; the product is released relative to the gripping means which are returned to their initial position.
  • the MP installation (fig. 1 and 3), for fitting the armatures, comprises an overhead crane 63 provided, on the one hand, with a lifting device 64 which can move the various loads, giving them a desired inclination , and on the other hand a laying device equipped with a frame 65 having a series of beams 66 adjustable in the longitudinal direction, and a series of hooking pieces 67, adjustable, in turn, along the width, that is to say along the peripheral direction of the drum.
  • the attachment pieces 67 are interchangeable so as to allow the installation M P to be used both for the installation of the various frames and for the mounting and loading of the molds, with minimal adaptations.
  • the rotary drum factory is produced with removable metal sub-assemblies, the size of each sub-assembly being such that transport by road of the sub-assembly is possible.
  • These sub-en ⁇ mbles include; two frames 70, for the support of the drum, two side walls 71, two or more front walls 72, various roofing elements 73, various working platforms 74, running beams 75 and various mounting and protection elements.
  • the assembly is carried out in such a way that the axis of the rotary drum is oriented in the direction of the length of the barge or of the floating hull; this shell is fitted with transverse walls 77 (fig. 4) provided on the bottom of the shell and serving to support the bearings of the rotary drum.
  • the interior length L of the shell is at least equal to and preferably greater than twice the length of the rotary drum to allow the two-stage carriage 23 to be released completely in the longitudinal direction.
  • the rotary drum is located in the left part of the shell; the right part of this shell, which allows the release of the carriage 23, forms a volume usable for the establishment of a series of annexes A (such as offices, stores, various workshops, warehouses, handling facilities, concrete, boilers, electric current generators).
  • a series of annexes A such as offices, stores, various workshops, warehouses, handling facilities, concrete, boilers, electric current generators.

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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)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Centrifugal Separators (AREA)
  • Drying Of Solid Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

Usine pour la fabrication de produits en béton, béton armé et/ou béton précontraint, comprenant un tambour rotatif à axe de rotation horizontal garni, sur sa surface cylindrique extérieure, de moyens de moulage et propre à faire passer, lors de sa rotation, lesdits moyens de moulage devant divers postes de travail, notamment postes de bétonnage, de durcissement, de démoulage et de mise en place des armatures. Le tambour T est équipé de poutres (9) à profil composé fixées, notamment par soudage, longitudinalement sur la périphérie extérieure du tambour, lesdites poutres: ayant une section transversale qui présente des zones propres à former un chemin de roulement parallèle à l'axe longitudinal du tambour pour le roulement et le guidage de moyens de compactage (29) du béton; étant équipées de moyens de fixation des moules dans une position située radialement vers l'extérieur par rapport au susdit chemin de roulement, ayant, en outre, une résistance mécanique suffisante pour absorber la majeure partie des efforts de précontrainte exercés sur les armatures dans le cas de la fabrication d'éléments en béton précontraint.Factory for the production of concrete, reinforced concrete and / or pre-stressed concrete products, comprising a rotary drum with horizontal axis of rotation furnished, on its external cylindrical surface, with molding means and suitable for passing, during its rotation, the said molding means in front of various work stations, in particular concreting, hardening, demoulding and reinforcement positioning stations. The drum T is equipped with beams (9) with compound profile fixed, in particular by welding, longitudinally on the external periphery of the drum, said beams: having a cross section which has areas suitable for forming a raceway parallel to the axis longitudinal of the drum for rolling and guiding concrete compacting means (29); being equipped with means for fixing the molds in a position located radially outwards with respect to the aforesaid raceway, having, moreover, sufficient mechanical strength to absorb the major part of the prestressing forces exerted on the reinforcements in the case of the production of prestressed concrete elements.

Description

L'invention est relative à une usine pour la fabrication de produits en béton, béton armé et/ou béton précontraint, du genre de celles qui comprennent un tambour rotatif à axe de rotation horizontal garni, sur sa surface cylindrique extérieure, de moyens de moulage et propre à faire passer, lors de sa rotation, lesdits moyens de moulage devant divers postes de travail, notamment postes de bétonnage, de durcissement, de démoulage et de mise en place des armatures.The invention relates to a factory for the manufacture of concrete, reinforced concrete and / or prestressed concrete products, of the type which include a rotary drum with horizontal axis of rotation, provided with molding means on its external cylindrical surface. and suitable for passing, during its rotation, said molding means in front of various work stations, in particular concreting, hardening, demoulding and reinforcement positioning stations.

Une usine de ce genre est connue notamment d'après le brevet américain 3 720 493.A plant of this kind is known in particular from American patent 3,720,493.

L'invention a pour but, surtout, de rendre les usines du genre en question telles qu'elles répondent mieux que jusqu'à présent aux diverses exigences de la pratique, et notamment telles qu'elles permettent de réaliser, avec un minimum d'adaptation, une grande diversité de types de produits, et d'assurer la fabrication de produits de bonne qualité.The object of the invention is, above all, to make factories of the kind in question such that they better meet the various requirements of practice than hitherto, and in particular such that they make it possible to carry out, with a minimum of adaptation, a wide variety of product types, and ensuring the manufacture of good quality products.

Selon l'invention, une usine pour la fabrication de produits en béton, béton armé et/ou béton précontraint, du genre défini précédemment, est caractérisée par'le fait que le tambour est équipé de poutres à profil composé fixées,notamment par soudage, longitudinalement sur la périphérie extérieure du tambour, lesdites poutres :

  • - 1°/ ayant une section transversale qui présente des zones propres à former un chemin de roulement parallèle à l'axe longitudinal du tambour pour le roulement et le guidage de moyens de compactage du béton ;
  • - 2°/ étant équipées de moyens de fixation des moules dans une position située radialement vers l'extérieur par rapport au susdit chemin de roulement,
  • - 3°/ ayant, en outre, une résistance mécanique suffisante pour absorber la majeure partie des efforts de précontrainte exercés sur les armatures dans le cas de la fabrication d'éléments en béton précontraint.
According to the invention, a factory for the production of concrete, reinforced concrete and / or prestressed concrete products, of the kind defined above, is characterized by the fact that the drum is equipped with beams with compound profile fixed, in particular by welding, longitudinally on the outer periphery of the drum, said beams:
  • - 1 ° / having a cross section which has areas suitable for forming a raceway parallel to the longitudinal axis of the drum for rolling and guiding concrete compacting means;
  • 2 ° / being equipped with means for fixing the molds in a position located radially outward relative to the above-mentioned raceway,
  • - 3 ° / having, in addition, sufficient mechanical strength to absorb the major part of the prestressing forces exerted on the reinforcements in the case of the production of prestressed concrete elements.

Parmi les avantages obtenus grâce à l'invention, on peut citer l'amélioration de la qualité des produits en raison de l'amélioration de l'efficacité du compactage et de la réduction des déformations des moyens de moulage ; en outre, l'adaptation des moyens de moulage à divers types de produits à fabriquer peut être réalisée de manière simple et rapide, ce qui rend l'usine polyvalente.Among the advantages obtained by virtue of the invention, mention may be made of the improvement in the quality of the products due to the improvement in the efficiency of compaction and the reduction in deformations of the molding means; furthermore, the adaptation of the molding means to various types of products to be produced can be carried out in a simple and rapid manner, which makes the factory versatile.

De préférence, la section transversale de chaque poutre se compose d'une partie de base, sensiblement rectangulaire, située contre la surface périphérique du tambour et d'une partie en T fixée, par sa branche centrale, à mi-largeur sur la partie de base, les zones de la partie de base situées de part et d'autre de la branche centrale du T servant de chemin de roulement, tandis que la barre transversale du T est destinée à recevoir des moyens de support, notamment élastiques, pour des moules.Preferably, the cross section of each beam consists of a base part, substantially rectangular, situated against the peripheral surface of the drum and a T-part fixed, by its central branch, at mid-width on the part of base, the areas of the base part located on either side of the central branch of the T serving as a raceway, while the crossbar of the T is intended to receive support means, in particular elastic, for molds .

Avantageusement, les moyens de moulage comportent à leur partie tournée vers le tambour, un élément de résistance s'étendant longitudinalement, muni de moyens d'accrochage pour les moyens de compactage, cet élément de résistance ainsi que les moyens d'accrochage étant identiques quel que soit le type de moule pour les diverses sortes de produits à fabriquer, la partie inférieure du moule étant reliée, notamment par des articulations, à des coquilles latérales dont la forme est déterminée par le type de produit à réaliser ; des couvercles de fermeture sont éventuellement prévus pour recouvrir la face libre du béton pendant le traitement thermique.Advantageously, the molding means comprise, in their part facing the drum, a resistance element extending longitudinally, provided with attachment means for the compacting means, this resistance element as well as the attachment means being identical which that either the type of mold for the various kinds of products to be manufactured, the lower part of the mold being connected, in particular by joints, to lateral shells whose shape is determined by the type of product to be produced; closure covers are optionally provided to cover the free face of the concrete during the heat treatment.

De préférence, l'installation de bétonnage comporte un chariot dont la longueur, suivant une direction parallèle à l'axe du tambour, est sensiblement égale à celle du tambour, ce chariot comportant deux niveaux et étant situé au-dessus de la génératrice la plus haute du tambour, le niveau supérieur de ce chariot comportant au moins un conteneur pour recevoir du béton et des moyens pour permettre l'écoulement du béton dans les moules, le susdit chariot étant propre à rouler, à son niveau supérieur, sur des moyens de roulement portés par une charpente fixe, le susdit chariot comportant un second niveau ou niveau inférieur muni de moyens de compactage propres à rouler sur le chemin de roulement des poutres solidaires du tambour, des moyens d'accrochage étant prévus pour bloquer les moyens de compactage sur le fond des moules pendant la phase de compactage, les deux niveaux du chariot étant liés par une ossature, et des moyens de va et vient étant prévus pour déplacer le chariot de telle sorte qu'il puisse occuper une position de travail pour laquelle son niveau supérieur se trouve au-dessus des moules arrêtés au sommet de leur trajectoire, tandis que le niveau inférieur du chariot est situé au-dessous de ces moules, ou une position de sortie pour laquelle le chariot est situé, suivant le sens axial, entièrement à l'extérieur du tambour.Preferably, the concreting installation comprises a carriage whose length, in a direction parallel to the axis of the drum, is substantially equal to that of the drum, this carriage comprising two levels and being located above the most generatrix high of the drum, the upper level of this carriage comprising at least one container for receiving concrete and means for allowing the flow of concrete in the molds, the above-mentioned carriage being suitable for rolling, at its upper level, on rolling means carried by a fixed frame, the above-mentioned carriage comprising a second level or level lower fitted with compacting means suitable for rolling on the raceway of the beams integral with the drum, hooking means being provided for blocking the compacting means on the bottom of the molds during the compacting phase, the two levels of the carriage being linked by a frame, and means back and forth being provided to move the carriage so that it can occupy a working position for which its upper level is above the molds stopped at the top of their trajectory, while that the lower level of the carriage is located below these molds, or an exit position for which the carriage is located, in the axial direction, entirely outside the tambo ur.

Généralement, l'usine comporte une installation de traitement thermique avantageusement constituée par une chambre, fermée vers l'intérieur par le tambour lui-même, vers l'extérieur,(dans le sens radial),par des parois, notamment polygonales, aux extrémités suivant le sens axial par des écrans, et radialement par des rideaux mobiles munis de moyens d'enroulement,de guidage et de montage, cette chambre de traitement thermique étant munie de moyens de distribution, de réglage et de récupération de l'agent thermique.Generally, the plant includes a heat treatment installation advantageously constituted by a chamber, closed inwards by the drum itself, outwards (in the radial direction), by walls, in particular polygonal, at the ends in the axial direction by screens, and radially by movable curtains provided with winding, guiding and mounting means, this heat treatment chamber being provided with means for distributing, adjusting and recovering the thermal agent.

L'installation de démoulage et d'évacuation des produits en béton est notamment placée à 270° par rapport au poste de bétonnage ; cette installation de démoulage et d'évacuation comporte, avantageusement, un bâti propre à se déplacer suivant une direction radiale, notamment dans le plan horizontal passant par l'axe du tambour, ce bâti portant une poutre rotative sur laquelle sont montés des moyens de préhension des produits démoulés, cette poutre pouvant effectuer une rotation, avec les moyens de préhension, de manière à assurer l'évacuation des produits moulés saisis par les moyens de préhension.The installation for removing and removing concrete products is notably placed at 270 ° to the concreting station; this demoulding and evacuation installation advantageously comprises a frame capable of moving in a radial direction, in particular in the horizontal plane passing through the axis of the drum, this frame carrying a rotary beam on which are gripped means unmolded products, this beam can perform a rotation, with the gripping means, so as to ensure the evacuation of the molded products gripped by the gripping means.

L'usine à tambour rotatif peut être constituée de plusieurs sous-ensembles démontables, chaque sous-ensemble ayant un gabarit acceptable pour un transport par la route.The rotary drum factory can consist of several removable sub-assemblies, each sub-assembly having an acceptable size for transport by road.

Selon une autre possibilité, l'usine à tambour rotatif peut être montée dans une coque de navire de manière à constituer une usine flottante.Alternatively, the rotary drum factory can be mounted in a ship's hull to form a floating factory.

L'invention consiste, mises à part les disposition exposées ci-dessus, en certaines autres dispositions dont il sera plus explicitement question ci-après, à propos de modes de réalisation particuliers décrits avec référence aux dessins ci-annexés, mais qui ne sont nullement limitatifs.The invention consists, apart from the arrangements set out above, of certain other arrangements which will be more explicitly discussed below, with regard to particular embodiments described with reference to the attached drawings, but which are by no means limiting.

La figure 1, de ces dessins, est une coupe transversale suivant I-I fig. 2, d'une usine à tambour rotatif, conforme à l'invention/

  • La figure 2 est une coupe longitudinale suivant II-II figure 1.
  • La figure 3 est une coupe transversale suivant III-III figure 4, d'une usine flottante à tambour rotatif.
  • La figure 4 est une coupe longitudinale suivant IV-IV figure 3.
  • La figure 5 montre en coupe transversale, à plus grande échelle, l'installation de bétonnage d'une usine à tambour rotatif, équipé de moules pour la fabrication de poteaux pour lignes électriques et de pieux.
  • La figure 6 est une coupe transversale, à plus grande échelle, de l'installation de démoulage et d'évacuation des produits moulés formés, dans l'exemple représenté, par des poteaux pour lignes électriques.
  • La figure 7 est une coupe transversale partielle, à plus grande échelle, d'un tambour rotatif équipé de moules pour la fabrication de traverses de chemin de fer, de poutres en T, de piquets de vignes et de dalles nervurées.
  • La figure 8, enfin, est une coupe transversale partielle, à plus grande échelle, d'un tambour rotatif équipé de moules.
Figure 1 of these drawings is a cross section along II fig. 2, of a rotary drum factory, according to the invention /
  • Figure 2 is a longitudinal section along II-II in Figure 1.
  • Figure 3 is a cross section along III-III Figure 4, of a floating factory rotary drum.
  • FIG. 4 is a longitudinal section along IV-IV in FIG. 3.
  • Figure 5 shows in cross section, on a larger scale, the concreting installation of a rotary drum factory, equipped with molds for the manufacture of poles for power lines and piles.
  • Figure 6 is a cross section, on a larger scale, of the mold release and discharge of molded products formed, in the example shown, by poles for power lines.
  • Figure 7 is a partial cross section, on a larger scale, of a rotary drum fitted with molds for the manufacture of sleepers railway, T-beams, vine stakes and ribbed slabs.
  • Figure 8, finally, is a partial cross section, on a larger scale, of a rotary drum fitted with molds.

En se reportant aux dessins, plus particulièrement aux figures 1 et 3, on peut voir une usine à tambour rotatif, fixe ou flottante, pour la fabrication de produit p en béton, béton armé et/ou en béton précontraint.Referring to the drawings, more particularly to Figures 1 and 3, one can see a rotary drum factory, fixed or floating, for the manufacture of product p concrete, reinforced concrete and / or prestressed concrete.

Une telle usine comporte :

  • - un tambour rotatif T, à axe de rotation horizontal, équipé, sur sa périphérie extérieure, de poutres 9 à profil composé formant une série de bancs supports pour les moules,et de renforcements;
  • - des moyens de moulage M pour divers types de produits en béton , ces moyens de moulage étant placés sur la surface cylindrique extérieure du tambour ;
  • - une installation de bétonnage B, équipée d'un dispositif commun de dosage, de distribution et de compactage du béton coulé dans les moyens de moulage M ;
  • - une installation de traitement thermique T, comprenant une chambre de durcissement à travers laquelle passent les moules remplis de béton, suivant une cadence constante, du fait de la rotation du tambour ;
  • - une installation de démoulage et d'évacuation des
  • -produits moulés DE, disposée avantageusement à 270° par rapport à l'installation de bétonnage B ;
  • - une installation M P qui permet de réaliser, avec des adaptationsréduites,aussi bien la mise en place des armatures "a" pour le béton armé que des armatures pour le béton précontraint ;
  • - diverses constructions métalliques accessoires, visibles sur les dessins, notamment pour la réalisation des postes de commande, de bureaux, vestiaires, ou constructions annexes semblables.
Such a factory includes:
  • - A rotary drum T, with a horizontal axis of rotation, equipped, on its outer periphery, with beams 9 with a compound profile forming a series of support benches for the molds, and reinforcements;
  • - Molding means M for various types of concrete products, these molding means being placed on the outer cylindrical surface of the drum;
  • - A concreting installation B, equipped with a common device for metering, distributing and compacting the concrete poured into the molding means M;
  • - A heat treatment installation T, comprising a hardening chamber through which pass the molds filled with concrete, at a constant rate, due to the rotation of the drum;
  • - a demolding and evacuation installation for
  • -D molded products, advantageously arranged at 270 ° relative to the concreting installation B;
  • - an MP installation which makes it possible, with reduced adaptations, to put in place the reinforcements "a" for reinforced concrete as well as reinforcements for prestressed concrete;
  • - various accessory metal constructions, visible on the drawings, in particular for the realization of control stations, offices, changing rooms, or similar ancillary constructions.

Dans certainscas, le tambour rotatif peut être monté dans une coque C (fig. 4) flottante, avec toutes les installations annexes de l'usine, de manière à réaliser une "usine flottante à tambour rotatif".In some cases, the rotary drum can be mounted in a floating shell C (fig. 4), with all the ancillary installations of the factory, so as to create a "floating factory with rotating drum".

Le tambour rotatif T (fig. 1 à 8) est constitué par une structure rotative ayant sur toute sa périphérie extérieure des poutres à profil composé 9, formant une série de bancs supports de moules, soudées parallèlement à l'axe horizontal de rotation de manière à renforcer la structure pour la rendre capable de supporter non seulement les charges dues aux moules remplis de béton, mais aussi les efforts provenant de la mise en tension des armatures ou des torons pendant la fabrication de produits en béton précontraint.The rotary drum T (fig. 1 to 8) is constituted by a rotary structure having on its entire outer periphery beams with compound profile 9, forming a series of mold support benches, welded parallel to the horizontal axis of rotation so to reinforce the structure to make it capable of supporting not only the loads due to the molds filled with concrete, but also the efforts coming from the tensioning of the reinforcements or the strands during the manufacture of products in prestressed concrete.

Ladite structure rotative comporte des tôles 1 (voir notamment figure 8) cintrées, renforcées par des poutres 2 et assemblées à l'aide de moyens 3, formés par exemple par des plaques de liaison, et de deux parois de tête 4 (fig. 1 et 4) agencées sous la forme d'un cylindre. Aux deux extrémités axiales de la structure sont prévues deux poutres tubulaires d'appui 5, solidaires des parois 4, portées par deux paliers 6 ; des moyens d'entrainement en rotation 7 (fig. 2 et 4) du tambour et des moyens de blocage 8 en rotation de ce tambour sont également prévus.Said rotary structure comprises curved sheets 1 (see in particular Figure 8), reinforced by beams 2 and assembled using means 3, formed for example by connection plates, and two head walls 4 (fig. 1 and 4) arranged in the form of a cylinder. At the two axial ends of the structure are provided two tubular support beams 5, integral with the walls 4, carried by two bearings 6; means for driving in rotation 7 (FIGS. 2 and 4) of the drum and means for blocking 8 in rotation of this drum are also provided.

Chaque poutre 9 à profil composé (voir notamment figure 5) présente les caractéristiques suivantes :

  • - sa section transversale présente des zones 9a, 9b (fig. 5) propres à former un chemin de roulement parallèle à l'axe longitudinal du tambour, pour le roulement et le guidage de moyens de compactage 29, 30 du béton coulé dans les moules ;ces zones 9a, 9b sont orientées, comme visible sur les dessins, suivant la direction périphérique du tambour; ces zones sont formées par les parois situées radialement vers l'extérieur d'une partie de base 9c, de la section transversale, située et fixée contre la surface périphérique 1 du tambour ;
  • - chaque poutre 9 est équipée de moyens de fixation des moules 16, 17, 18, 19 dans une position située radialement vers l'extérieur par rapport aux chemins de roulement 9a, 9b ; ces moyens de fixation comprennent une série de chaises démontables 10 munies de moyens de fixation et de réglage 11 et de plots élastiques 12 ;
  • - chaque poutre 9 a une résistance mécanique suffisante pour absorber la majeure partie des efforts de précontrainte exercés sur les armatures dans le cas de fabrication d'éléments en béton précontraint.
Each beam 9 with a composite profile (see in particular FIG. 5) has the following characteristics:
  • - Its cross section has areas 9a, 9b (fig. 5) suitable for forming a raceway parallel to the longitudinal axis of the drum, for rolling and guiding compacting means 29, 30 of the concrete poured into the molds these areas 9a, 9b are oriented, as visible in the drawings, in the peripheral direction of the drum; these zones are formed by the walls located radially outward of a base part 9c, of the cross section, located and fixed against the peripheral surface 1 of the drum;
  • - Each beam 9 is equipped with means for fixing the molds 16, 17, 18, 19 in a position located radially outwards with respect to the raceways 9a, 9b; these fixing means comprise a series of removable chairs 10 provided with fixing and adjustment means 11 and elastic pads 12;
  • - Each beam 9 has sufficient mechanical strength to absorb most of the prestressing forces exerted on the reinforcements in the case of manufacturing prestressed concrete elements.

Avantageusement, comme visible sur les dessins, notamment sur les figures 5 à 8, la section transversale de chaque poutre 9 comprend, outre la partie de base 9c, une partie en T 9d fixée par sa branche centrale, orientée radialement, sur la partie de base 9c; les zones de la partie de base 9a, 9b situées de part et d'autre de la branche centrale du T constituent le susdit chemin de roulement pour les moyens de compactage. La barre transversale 9e du T est destinée à recevoir les moyens de support des moules.Advantageously, as can be seen in the drawings, in particular in FIGS. 5 to 8, the cross section of each beam 9 comprises, in addition to the base part 9c, a T-shaped part 9d fixed by its central branch, oriented radially, on the part of base 9c; the areas of the base part 9a, 9b located on either side of the central branch of the T constitute the above-mentioned raceway for the compacting means. The transverse bar 9e of the T is intended to receive the means for supporting the molds.

Des goussets 9f, écartés les uns des autres suivant le sens longitudinal, sont situés dans des plans perpendiculaire à l'axe longitudinal du tambour et sont fixés, notamment par soudage, aux branches centrales et transversales de la partie 9d et à la partie supérieure de la partie de base 9c.Les fixations sont assurées de préférence par soudage.Gussets 9f, spaced apart from one another in the longitudinal direction, are situated in planes perpendicular to the longitudinal axis of the drum and are fixed, in particular by welding, to the central and transverse branches of the part 9d and to the upper part of the basic part 9c. The fasteners are preferably made by welding.

Les moyens de moulage M (fig. 5 à 8) comportent, à leur partie tournée vers le tambour, un élément de résistance 13 s'étendant longitudinalement et muni de moyens d'accrochage 13a pour les moyens de compactage 29, 30. Cet élément de résistance 13 ainsi que les moyens d'accrochage 13a restent identiques quel que soit le type de moule pour les diverses sortes de produits à fabriquer, de telle sorte que les moyens de compactage peuvent être accrochés, dans des conditions identiques, quels que soient les types de produit à fabriquer. Cet élément de résistance 13 peut être constitué par deux poutres à section transversale en U, orientées longitudinalement avec leur concavité tournée en sens opposé, vers l'extérieur dans le sens périphérique, les ailes du U étant situées dans des plans parallèles à l'axe du tambour ; ces deux poutres sont réunies par une série de goussets d'assemblage 14.The molding means M (FIGS. 5 to 8) comprise, at their part facing the drum, a resistance element 13 extending longitudinally and provided with attachment means 13a for the compacting means 29, 30. This element of resistance 13 as well as the hooking means 13a remain identical regardless of the type of mold for the various kinds of products to be manufactured, so that the compacting means can be hung, under identical conditions, whatever the types of product to be manufactured. This resistance element 13 may consist of two U-shaped cross-section beams, oriented longitu linearly with their concavity turned in the opposite direction, outward in the peripheral direction, the wings of the U being situated in planes parallel to the axis of the drum; these two beams are joined by a series of assembly gussets 14.

La partie inférieure du moule est reliée à une ou plusieurs coquilles conçues selon le produit à fabriquer, soit comme coquille fixe 15 (voir notamment figure 7) soit comme coquille mixte ayant des parties fixes 16, et/ou des parties rabattables 17 montées sur des articulations de liaison avec la partie inférieure et/ou des coquille mobiles 18 (voir notamment figure 5). Des moyens de serrage 19 notamment pour maintenir en position de moulage les coquilles rabattables 17, sont prévus. Dans certains cas, les moyens de moulage sont munis de couvercle 20 pour la fermeture de la face libre du béton pendant le traitement thermique.The lower part of the mold is connected to one or more shells designed according to the product to be produced, either as a fixed shell 15 (see in particular FIG. 7) or as a mixed shell having fixed parts 16, and / or folding parts 17 mounted on connecting joints with the lower part and / or movable shells 18 (see in particular Figure 5). Clamping means 19 in particular for holding the folding shells 17 in the molding position are provided. In some cases, the molding means are provided with a cover 20 for closing the free face of the concrete during the heat treatment.

L'installation de bétonnage B (fig. 1 à 5) comprend une trémie d'alimentation 21, une trémie tampon 22 et un chariot 23 mobile suivant une direction parallèle à l'axe du tambour, au-dessus de la génératrice la plus haute du tambour. La longueur du chariot 23, suivant la direction parallèle à l'axe du tambour, est sensiblement égale à celle du tambour ; le chariot 23 peut être placé entièrement au-dessus du tambour, ou être dégagé, suivant la direction longitudinale, entièrement au-delà du tambour.The concreting installation B (fig. 1 to 5) comprises a feed hopper 21, a buffer hopper 22 and a carriage 23 movable in a direction parallel to the axis of the drum, above the highest generator of the drum. The length of the carriage 23, in the direction parallel to the axis of the drum, is substantially equal to that of the drum; the carriage 23 can be placed entirely above the drum, or be disengaged, in the longitudinal direction, entirely beyond the drum.

Le chariot 23 comporte deux niveaux ; le niveau supérieur de ce chariot comprend un ou plusieurs conteneurs interchangeables 23a,portés par un cadre 24 ; ce cadre est muni de deux plate-formes de tête 25, d'une ou plusieurs trappes de fermeture 26 et d'un goulot réglable 27 ; le cadre 24, en outre, est équipé de moyens de roulement 28a propres à rouler sur des rails 28c (fig. 5) portés par une charpente fixe.The carriage 23 has two levels; the upper level of this carriage comprises one or more interchangeable containers 23 a , carried by a frame 24; this frame is provided with two head platforms 25, one or more closing hatches 26 and an adjustable neck 27; the frame 24, moreover, is equipped with rolling means 28a suitable for rolling on rails 28c (FIG. 5) carried by a fixed frame.

Le goulet 27 du cadre 24 est propre à venir au-dessus des moyens de moulage M situés à la partie supérieure du tambour, de manière à permettre l'écoulement, par gravité, du béton dans les moules.The neck 27 of the frame 24 is clean to come above the molding means M located at the upper part of the drum, so as to allow the flow, by gravity, of the concrete in the molds.

Le susdit chariot comporte un deuxième niveau ou niveau inférieur muni des moyens de compactage 29, 30, propres à être introduits, par déplacement longitudinal du chariot,au-dessous des moyens de moulage situés à la partie supérieure du tambour.The above-mentioned carriage comprises a second level or lower level provided with compacting means 29, 30, suitable for being introduced, by longitudinal displacement of the carriage, below the molding means located at the upper part of the drum.

Les moyens de compactage comprennent une poutre vibrante29 munie de moyens de roulement 28b, propres à rouler sur les chemins de roulement 9a, 9b et de deux ou plusieurs vibrateurs 30. La poutre 29 est, en outre, équipée de dispositifs d'accrochage 31 de ladite poutre sur les moyens d'accrochage 13a de l'élément de résistance 13 des moyens de moulage (fig. 5) . Le niveau supérieur et le niveau inférieur du chariot sont reliés par une ossature 32de manière à se déplacer en bloc. L'ossature 32 est munie d'une plate-forme 33 supportant des moyens de "va-et-vient'' 34 prévus pour déplacer le chariot à deux niveaux suivant un mouvement de "va-et-vient", et de divers appareillages nécessaires au fonctionnement automatique des vibrateurs. Les dispositifs d'accrochage 31 comprennent des vérins 35 propres à déplacer des bras coudés serrant l'élément de résistance 13 contre la poutre vibrante.The compacting means comprise a vibrating beam29 provided with rolling means 28b, suitable for rolling on the rolling tracks 9a, 9b and two or more vibrators 30. The beam 29 is, moreover, fitted with hooking devices 31 of said beam on the attachment means 13a of the resistance element 13 of the molding means (fig. 5). The upper level and the lower level of the carriage are connected by a frame 32 so as to move as a unit. The frame 32 is provided with a platform 33 supporting means of "back and forth" 34 provided to move the carriage in two levels in a movement of "back and forth", and various devices necessary for the automatic operation of the vibrators The hooking devices 31 comprise jacks 35 able to move bent arms tightening the resistance element 13 against the vibrating beam.

On comprend ainsi que le chariot à deux niveaux peut occuper une position de travail pour laquelle le niveau supérieur du chariot se trouve au-dessus des moules arrêtés au sommet de leur trajectoire circulaire, tandis que le niveau inférieur du chariot est situé au-dessous de ces moules, ou dans une position de sortie pour laquelle le chariot est situé, suivant le sens longitudinal, entièrement à l'extérieur du tambour.It is thus understood that the two-level trolley can occupy a working position for which the upper level of the trolley is above the molds stopped at the top of their circular trajectory, while the lower level of the trolley is located below these molds, or in an exit position for which the carriage is located, in the longitudinal direction, entirely outside the drum.

Lors d'une course"aller", ledit chariot emmène les conteneurs 23, remplis de béton frais, au-dessus des moules, et la poutre vibrante 29 au-dessous de ces moules. L'arrêt du chariot dans la position travail commande l'accrochage de ladite poutre 29 sur les éléments de résistance 13 à l'aide des dispositifs 31. L'achèvement de cette opération d'accrochage commande l'ouverture des trappes 26 et le déversement du béton frais dans les moules ; la mise en marche des vibrateurs 30 est également commandée. La durée du compactage produit par les vibrations est choisie pour chaque produit selon les caractéristiques du béton utilisé.During a "outward" race, said carriage takes the containers 23, filled with fresh concrete, above the molds, and the vibrating beam 29 above. below these molds. Stopping the carriage in the working position controls the attachment of said beam 29 to the resistance elements 13 using the devices 31. The completion of this attachment operation controls the opening of the doors 26 and the discharge fresh concrete in the molds; the activation of the vibrators 30 is also controlled. The duration of the compaction produced by the vibrations is chosen for each product according to the characteristics of the concrete used.

Lorsque le compactage est terminé , l'arrêt des vibrateurs 30 est commandé, ainsi que le décrochage de la poutre 29 ; les trappes 26 se ferment et le chariot à deux niveaux commence sa course retour (de gauche à droite selon les figures 2 à 4) de manière à à sortir complètement , suivant le sens longitudinal, par rapport au tambour. Lors de cette course retour, les conteneurs 23 passent au-dessous de la trémie-tampon 22 et se remplissent de béton frais pour l'opération de coulage suivante. La plate-forme 25 située sur le côté droit du cadre 24 assure la fermeture de la trémie-tampon 22 pendant l'intervalle de temps où le coulage du béton dans les moyens de moulage M a lieu ; la plate-forme 25 située au côté gauche du cadre 24, selon les figures 2 et 4, assure la fermeture de la trémie 22 lorsque le chariot se trouve totalemnt à l'extérieur du tambour, et pendant la rotation d'un pas de ce tambour, rotation qui amène les moyens de moulage suivants au sommet de leur trajectoire circulaire, en vue du coulage du béton dans ces moyens de moulage.When the compaction is finished, the vibrators 30 are stopped, as well as the release of the beam 29 ; the hatches 26 close and the two-level carriage begins its return stroke (from left to right according to FIGS. 2 to 4) so as to exit completely, in the longitudinal direction, relative to the drum. During this return stroke, the containers 23 pass below the buffer hopper 22 and fill with fresh concrete for the next pouring operation. The platform 25 located on the right side of the frame 24 ensures the closing of the buffer hopper 22 during the time interval when the pouring of the concrete into the molding means M takes place; the platform 25 located on the left side of the frame 24, according to Figures 2 and 4, ensures the closure of the hopper 22 when the carriage is completely outside the drum, and during the rotation of a step of this drum, rotation which brings the following molding means to the top of their circular trajectory, with a view to pouring the concrete in these molding means.

L'installation de traitement thermique T T (voir notamment figures 1 et 3) est constituée par une chambre fermée, vers l'intérieur dans le sens radial, par le tambour lui-même dontla surface périphérique est réalisée par les tôles 1 qui forment un cylindre continu ; cette chambre est, en outre, fermée, radialement vers l'extérieur, par des parois 36, notamment à section transversale polygonale ; la chambre est fermée à ses têtes, c'est-à-dire à ses extrémités suivant le sens longitudinal, par des écrans 37 et,radialement,par des rideaux mobiles flexibles 38.ces rideaux 38 (fig.6)sont munis de moyens d'enroulement -39" de moyens de guidage 40 et' de moyens de montage 41. La chambre de traitement thermique T-T est munie de moyens de distribution 42 d'un agent thermique (vapeur, eau chaude, ou analogue), de moyens de réglage 43 du débit d'agent thermique et de moyens de récupération 44 de cet agent thermique ; le durcissement du béton peut ainsi se réaliser progressivement au passage des moules, remplis de béton, à travers cette chambre de traitement thermique. Ce passage est obtenu par la rotation de l'ensemble du tambour rotatif, suivant une cadence déterminée.The TT heat treatment installation (see in particular FIGS. 1 and 3) consists of a chamber closed, inwards in the radial direction, by the drum itself, the peripheral surface of which is produced by the sheets 1 which form a cylinder continued ; this room is also closed, radially outwards, by walls 36, in particular of polygonal cross section; the chamber is closed at its heads, that is to say at its ends in the longitudinal direction, by screens 37 and, radially, by flexible movable curtains 38. these curtains 38 (fig. 6) are provided with means -39 "winding of guide means 40 and 'mounting means 41. The heat treatment chamber TT is provided with means 42 for distributing a thermal agent (steam, hot water, or the like), means for adjustment 43 of the flow rate of thermal agent and of means 44 for recovering this thermal agent; the hardening of the concrete can thus be carried out gradually with the passage of the molds, filled with concrete, through this heat treatment chamber. the rotation of the entire rotating drum, at a determined rate.

L'installation de démoulage et d'évacuation des produits moulés DE (fig. 1, 3 et 6) est avantageusement placée à 270° par rapport au poste de coulage du béton, suivant le sens de rotation du tambour représenté par une flèche sur les fig. 1 et 3. Cette installation de démoulage comporte un bâti formé par une poutre 45 reliant deux écrans de tête 46 ; ce bâti est, en outre, muni de moyens de roulement 47 de manière à pouvoir se déplacer sur un chemin de roulement 47a, suivant une direction radiale située dans le plan horizontal passant par l'axe du tambour. Des moyens de déplacement 48 (par exemple ensemble :moteur,pignon,crémaillère) sont prévus pour permettre de communiquer au bâti un mouvement de"va-et-vient" suivant la direction radiale. Les écrans de tête 46 du bâti servent de support à une poutre rotative 49 montée tournante dans deux paliers 50 supportés par les écrans de tête. Deux vérins 51 articulés, à une extrémité, sur un pivot solidaire du bâti et, à leur autre extrémité, sur un pivot solidaire de la poutre 49 sont prévus pour commander une rotation suivant un angle de 90°, dans un sens ou dans l'autre, de cette poutre. Ladite poutre 49 est équipée de moyens de préhension 53, 54, 55, des produits moulés p,propres à saisir ces produits et à les évacuer.The demoulding and evacuation installation for molded products DE (fig. 1, 3 and 6) is advantageously placed at 270 ° relative to the concrete pouring station, according to the direction of rotation of the drum represented by an arrow on the fig. 1 and 3. This demolding installation comprises a frame formed by a beam 45 connecting two head screens 46; this frame is, moreover, provided with rolling means 47 so as to be able to move on a rolling path 47a, in a radial direction situated in the horizontal plane passing through the axis of the drum. Displacement means 48 (for example assembly: motor, pinion, rack) are provided to allow to communicate to the frame a movement of "back and forth" in the radial direction. The head screens 46 of the frame serve as support for a rotary beam 49 rotatably mounted in two bearings 50 supported by the head screens. Two cylinders 51 articulated, at one end, on a pivot integral with the frame and, at their other end, on a pivot integral with the beam 49 are provided for order a rotation at an angle of 90 °, in one direction or the other, of this beam. Said beam 49 is equipped with gripping means 53, 54, 55, molded products p, suitable for gripping these products and for removing them.

Les moyens de préhension sont supportés par des goussets 52 solidairesde la poutre 49 ; ces moyens de préhension comprennent, d'une part, une série de ventouses 53 montées à l'aide de têtes interchangeables 54 sur une poutre longitudinale 55 qui peut être déplacée radialement, par rapport au tambour. La poutre 55 est équipée de galets de roulement 57 et de moyens de guidage 56 de ses déplacements; des moyens 58, notamment formés par des vérins, sont prévus pour assurer un mouvement de "va-et-vient" de la poutre 55. Les moyens de préhension comportent, d'autre part, 1 des éléments supports 59, formés par une série de doigts, montés dans des guidages 60 et munis de moyens 61, tels que des vérins, propres à assurer un mouvement de "va-et-vient" ; ces doigts 59 peuvent être glissés sous les produits durcis lors du démoulage (voir fig. 6).The gripping means are supported by gussets 52 secured to the beam 49; these gripping means comprise, on the one hand, a series of suction cups 53 mounted by means of interchangeable heads 54 on a longitudinal beam 55 which can be moved radially, relative to the drum. The beam 55 is equipped with rollers 57 and means 56 for guiding its movements; means 58, in particular formed by jacks, are provided to ensure a back-and-forth movement of the beam 55. The gripping means comprise, on the other hand, 1 of the support elements 59, formed by a series fingers, mounted in guides 60 and provided with means 61, such as jacks, capable of ensuring a "back-and-forth" movement; these fingers 59 can be slid under the hardened products during demolding (see fig. 6).

Le fonctionnement de cette installation de démoulage apparait clairement d'après la figure 6. Lors de l'ouverture du moule, les produits p sont supportés par les doigts 59 et sont saisis par les ventouses 53. Les vérins 58 déplacent alors la poutre 55 de la droite vers la gauche de la figure 6, suivant une direction horizontale pour dégager le produit p du moule. Ensuite, les moyens 48 assurent le déplacement de l'ensemble du bâti 45, 46 de la poutre 49, de la poutre 55 et du produit p .The operation of this demolding installation appears clearly from FIG. 6. When the mold is opened, the products p are supported by the fingers 59 and are gripped by the suction cups 53. The jacks 58 then move the beam 55 from the right to the left of Figure 6, in a horizontal direction to remove the product p from the mold. Then, the means 48 ensure the displacement of the whole of the frame 45, 46 of the beam 49, of the beam 55 and of the product p.

Lorsque le recul du bâti est suffisant, la rotation de 90° de la poutre 49,dans le sens des aiguilles d'une montre, est comnandée par les vérins 51 de manière à placer les goussets 52 dans une position verticale; le vérin 58, dont l'axe est alors vertical , commande alors la descente de la poutre 55 jusqu'à ce que le produit p vienne dans la position représentée en pointillés sur la figure 6, pour reposer sur une chaîne à rouleaux 62, ou sur un autre moyen de transport, pour l'évacuation des produits. Le vide qui, jusqu'à présent, avait été maintenu dans les ventouses 53 pour assurer la préhension du produit p est supprimé ; le produit se trouve libéré par rapport aux moyens de préhension qui sont remis dans leur position initiale.When the recoil of the frame is sufficient, the rotation of 90 ° of the beam 49, in the clockwise direction, is controlled by the jacks 51 so as to place the gussets 52 in a vertical position; the jack 58, the axis of which is then vertical, then controls the descent of the beam 55 until the product p comes into the position shown in dotted lines in FIG. 6, to rest on a roller chain 62, or on another means of transport, for the evacuation of the products. The vacuum which, until now, had been maintained in the suction cups 53 to ensure the grip of the product p is eliminated; the product is released relative to the gripping means which are returned to their initial position.

L'installation M P (fig. 1 et 3), de mise en place des armatures,comporte un pont roulant 63 muni, d'une part, d'un dispositif de levage 64 pouvant déplacer les diverses charges, en leur donnant une inclinaison voulue, et d'autre part d'un dispositif de pose équipé d'un cadre 65 ayant une série de poutres 66 réglables suivant la direction longitudinale, et une série de pièces d'accrochage 67, réglables, à leur tour, suivant la largeur, c'est-à-dire suivant la direction périphérique du tambour.The MP installation (fig. 1 and 3), for fitting the armatures, comprises an overhead crane 63 provided, on the one hand, with a lifting device 64 which can move the various loads, giving them a desired inclination , and on the other hand a laying device equipped with a frame 65 having a series of beams 66 adjustable in the longitudinal direction, and a series of hooking pieces 67, adjustable, in turn, along the width, that is to say along the peripheral direction of the drum.

Les pièces d'accrochage 67 sont interchangeables de manière à permettre d'utiliser l'installation M P aussi bien pour la pose des diverses armatures que pour le montage et le chargement des moules, moyennant des adaptations minimes.The attachment pieces 67 are interchangeable so as to allow the installation M P to be used both for the installation of the various frames and for the mounting and loading of the molds, with minimal adaptations.

On peut, dans certains cas, comme représenté sur la figure 3, utiliser pour l'assemblage des armatures une chaine de montage munie de moyens de roulement 68 et d'une série de plates-formes 69 pour le support et le déplacement à la verticale des étriers propres à relier les barres longitudinales des armatures.It is possible, in certain cases, as shown in FIG. 3, to use for the assembly of the armatures an assembly line provided with rolling means 68 and a series of platforms 69 for the support and the vertical displacement. stirrups suitable for connecting the longitudinal bars of the reinforcements.

Avantageusement, l'usine à tambour rotatif est réalisée avec des sous-ensembles métalliques démontables, le gabarit de chaque sous-ensemble étant tel qu'un transport par la route du sous-ensemble soit possible. Ces sous-enæmbles comportent ; deux bâtis 70, pour le support du tambour, deux parois latérales 71, deux ou plusieurs parois frontales 72, divers éléments de toitures 73, diverses plates-formes de travail 74, des poutres de roulement 75 et divers éléments de montage et de protection.Advantageously, the rotary drum factory is produced with removable metal sub-assemblies, the size of each sub-assembly being such that transport by road of the sub-assembly is possible. These sub-enæmbles include; two frames 70, for the support of the drum, two side walls 71, two or more front walls 72, various roofing elements 73, various working platforms 74, running beams 75 and various mounting and protection elements.

Avec les mêmes sous-ensembles, il est possible d'assurer le montage d'une usine fixe, sur des fondations en béton, ou d'une usine flottante en faisant appel, dans ce dernier cas, soit à une barge, soit à une coque qui peut être réalisée en métal 76 ou en métal et béton armé 76a, les sous-ensembles étant montés dans cette coque.With the same sub-assemblies, it is possible to ensure the mounting of a fixed plant, on concrete foundations, or of a floating plant by using, in the latter case, either a barge, or a shell which can be made of metal 76 or of metal and reinforced concrete 76a, the subassemblies being mounted in this shell.

Dans le cas d'une usine flottante, le montage est effectué de telle sorte que l'axe du tambour rotatif soit orienté suivant le sens de la longueur de la barge ou de la coque flottante ; cette coque est équipée de parois transversales 77 (fig. 4) prévues sur le fond de la coque et servant de support aux paliers du tambour rotatif. La longueur L intérieure de la coque est au moins égale et de préférence supérieure au double de la longueur du tambour rotatif pour permettre de dégager, totalement, dans le sens longitudinal, le chariot à deux étages 23. Dans l'exemple représenté sur la figure 4, le tambour rotatif est situé dans la partie gauche de la coque ; la partie droite de cette coque, qui permet le dégagement du chariot 23, forme un volume utilisable pour l'implantation d'une série d'annexes A (tels que bureaux, magasins, ateliers divers, dépôts dvers, moyens de manutention, centrales à béton, chaudières, générateurs de courant électrique).In the case of a floating factory, the assembly is carried out in such a way that the axis of the rotary drum is oriented in the direction of the length of the barge or of the floating hull; this shell is fitted with transverse walls 77 (fig. 4) provided on the bottom of the shell and serving to support the bearings of the rotary drum. The interior length L of the shell is at least equal to and preferably greater than twice the length of the rotary drum to allow the two-stage carriage 23 to be released completely in the longitudinal direction. In the example shown in the figure 4, the rotary drum is located in the left part of the shell; the right part of this shell, which allows the release of the carriage 23, forms a volume usable for the establishment of a series of annexes A (such as offices, stores, various workshops, warehouses, handling facilities, concrete, boilers, electric current generators).

Ces annexes A peuvent être également prévus pour les usines fixes. Ces annexes donnent à l'usine ainsi équipée une meilleure autonomie.These appendices A can also be provided for fixed plants. These annexes give the factory thus equipped better autonomy.

Claims (9)

1. Usine pour la fabrication de produits en béton, béton armé et/ou béton précontraint comprenant un tambour rotatif à axe de rotation horizontal garni, sur sa surface cylindrique extérieure, de moyens de moulage et propre à faire passer, lors de sa rotation, lesdits moyens de moulage devant divers postes de travail, notamment postes de bétonnage, de durcissement, de démoulage et de mise en place des armatures, caractérisée par le fait que le tambour (T) est équipé de poutres (9) à profil composé fixées, notamment par soudage, longitudinalement sur la périphérie extérieure du tambour, lesdites poutres : - 1°/ ayant une section transversale qui présente des zones (9a, 9b) propres à former un chemin de roulement parallèle à l'axe longitudinal du tambour pour le roulement et le guidage de moyens de compactage (29, 30) du béton ; - 2°/ étant équipées de moyens de fixations (10,11,12) des moules dans une position située radialement vers l'extérieur par rapport au susdit chemin de roulement, - 3°/ ayant, en outre, une résistance mécanique suffisante pour absorber la majeure partie des efforts de précontrainte exercés sur les armatures dans le cas de la fabrication d'éléments en béton précontraint. 1. Factory for the production of concrete, reinforced concrete and / or prestressed concrete products comprising a rotary drum with horizontal axis of rotation furnished, on its external cylindrical surface, with molding means and suitable for passing, during its rotation, said molding means in front of various work stations, in particular concreting, hardening, demoulding and reinforcement positioning stations, characterized in that the drum (T) is equipped with beams (9) with fixed compound profile, in particular by welding, longitudinally on the outer periphery of the drum, said beams: - 1 ° / having a cross section which has zones (9a, 9b) suitable for forming a raceway parallel to the longitudinal axis of the drum for rolling and guiding the compacting means (29, 30) of the concrete; 2 ° / being equipped with means for fixing (10, 11, 12) the molds in a position situated radially outwards relative to the above-mentioned raceway, - 3 ° / having, in addition, sufficient mechanical strength to absorb the major part of the prestressing forces exerted on the reinforcements in the case of the production of prestressed concrete elements. 2. Usine selon la revendication 1, caractérisée par le fait que la section transversale de chaque poutre se compose d'une partie de base (9c), sensiblement rectangulaire, située contre la surface périphérique (1) du tambour et d'une partie (9d) en T fixée, par sa branche centrale, à mi-largeur sur la partie de base, les zones (9a, 9b) de la partie de base (9c) situées de part et d'autre de la branche centrale du T servant de chemin de roulement, tandis que la barre transversale du T est destinée à recevoir des moyens de support (10, 11, 12), notamment élastiques, pour des moules.2. Factory according to claim 1, characterized in that the cross section of each beam consists of a base part (9c), substantially rectangular, located against the peripheral surface (1) of the drum and a part ( 9d) in T fixed, by its central branch, at mid-width on the base part, the zones (9a, 9b) of the base part (9c) located on either side of the central branch of the T serving raceway, while the crossbar of the T is intended to receive support means (10, 11, 12), in particular elastic, for molds. 3. Usine selon la revendication 1 ou 2, caractérisé par le fait que les moyens de moulage (M) comportent à leur partie tournée vers le tambour, un élément de résistance (13) s'étendant longitudinalement, muni de moyens d'accrochage (13a) pour les moyens de compactage (29, 30) cet élément de résistance ainsi que les moyens d'accrochage étant identiques quel que soit le type de moule pour les diverses sortes de produits à fabriquer, la partie inférieure du moule étant reliée, notamment par des articulations, à des coquilles latérales (15, 16, 17) dont la forme est déterminée par le type de produits à réaliser.3. Factory according to claim 1 or 2, characterized in that the molding means (M) comprise in their portion facing the drum, a resistance element (13) extending longitudinally, provided with attachment means (13a) for the compacting means (29, 30) this resistance element as well as the means of hooking being identical whatever the type of mold for the various kinds of products to be manufactured, the lower part of the mold being connected, in particular by articulations, to lateral shells (15, 16, 17) whose shape is determined by the type of products to be produced. 4. Usine selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'installation de bétonnage (B) comporte un chariot (23) dont la longueur, suivant une direction parallèle à l'axe du tambour, est sensiblement égale à celle du tambour, ce chariot comportant deux niveaux et étant situé au-dessus de la génératrice la plus haute du tambour, le niveau supérieure de ce chariot comportant au moins un conteneur (23a) pour recevoir du béton et des moyens (27) pour permettre l'écoulement du béton dans les moules, le susdit chariot étant propre à rouler, à son niveau supérieur, sur des moyens de roulement (28c) portés par une charpente fixe, le susdit chariot compor- tant un second niveau ou niveau inférieur muni de moyens de compactage (29, 30) propres à rouler sur le chemin de roulement (9a, 9b) des poutres (9) solidaires du tambour, des moyens d'accrochage (31) étant prévus pour bloquer les moyens de compactage sur le fond des moules pendant la phase de compactage, les deux niveaux du chariot étant liés par une ossature (32), et des moyens de "va-et-vient" (34) étant prévus pour déplacer le chariot de telle sorte qu'il puisse occuper une position de travail pour laquelle son niveau supérieur se trouve au-dessus des moules (M) arrêtés au sommet de leur trajectoire, tandis que le niveau inférieur du chariot est situé au-dessous de ces moules, ou une position de sortie pour laquelle le chariot (23) est situé, suivant le sens axial, entièrement à l'extérieur du tambour.4. Plant according to any one of the preceding claims, characterized in that the concreting installation (B) comprises a carriage (23) whose length, in a direction parallel to the axis of the drum, is substantially equal to that of the drum, this carriage comprising two levels and being situated above the highest generator of the drum, the upper level of this carriage comprising at least one container (23a) for receiving concrete and means (27) for allowing the flow of the concrete into the molds, the aforesaid carriage being adapted to roll, at its upper level, on running means (28c) carried by a fixed structure, the aforesaid carriage COMPOR - as a second level or lower level provided with compacting means (29, 30) suitable for rolling on the raceway (9a, 9b) of the beams (9) integral with the drum, hooking means (31) being provided to block the compacting means on the bottom of the molds during the compaction phase, the two levels of the carriage being linked by a frame (32), and means of "back and forth" (34) being provided to move the carriage so that it can occupy a working position for which its level upper is located above the molds (M) stopped at the top of their trajectory, while the lower level of the carriage is located below these molds, or an exit position for which the carriage (23) is located, according to the axial direction, entirely outside the drum. 5. Usine selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comporte une installation de traitement thermique (TT) constituée par une chambre, fermée vers l'intérieur par le tambour lui-même, vers l'extérieur, (dans le sens radial) par des parois (36) notamment polygonales, aux extrémités suivant le sens axial par des écrans (37), et radialement par des rideaux mobiles (38) munis de moyens d'enroulement (39), de guidage (40) et de montage (41), cette chambre de traitement thermique étant munie de moyens de distribution, de réglage (43) et de récupération (44) de l'agent thermique.5. Factory according to any one of the preceding claims, characterized in that it comprises a thermal treatment installation (TT) constituted by a chamber, closed inwards by the drum itself, outwards, (in the radial direction) by walls (36) in particular polygonal, at the ends in the axial direction by screens (37), and radially by movable curtains (38) provided with winding means (39), of guide ( 40) and assembly (41), this heat treatment chamber being provided with means of distribution, adjustment (43) and recovery (44) of the thermal agent. 6. Usine selon l'une quelconque des revendications précédentes, caractérisée par le fait que l'installation de démoulage et d'évacuation comporte un bâti (45) propre à se déplacer suivant une direction radiale, notamment dans le plan horizontal passant par l'axe du tambour, ce bâti portant une poutre rotative (49) sur laquelle sont montés des moyens de préhension (53, 54) des produits démoulés, cette poutre (49) pouvant effectuer une rotation, avec les moyens de préhension (53, 54) de manière à assurer l'évacuation des produits moulés saisis par les moyens de préhension.6. Factory according to any one of the preceding claims, characterized in that the demolding and evacuation installation comprises a frame (45) capable of moving in a radial direction, in particular in the horizontal plane passing through the axis of the drum, this frame carrying a rotary beam (49) on which are mounted gripping means (53, 54) of the demolded products, this beam (49) being able to rotate, with the gripping means (53, 54) so as to ensure the evacuation of the molded products seized by the gripping means. 7. Usine selon la revendication 6, caractérisée par le fait que les moyens de préhension comprennent une série de ventouses (53) montées à l'aide de têtes interchangeables (54) sur une poutre longitudinale (55) qui peut être déplacée radialement par rapport au tambour, ces moyens de préhension étant combinés avec des éléments supports (59), pouvant coulisser, propres à être glissés sous les produits durcis, lors du démoulage.7. Factory according to claim 6, characterized in that the gripping means comprise a series of suction cups (53) mounted using interchangeable heads (54) on a longitudinal beam (55) which can be moved radially relative to the drum, these gripping means being combined with support elements (59), which can slide, capable of being slid under the hardened products, during demolding. 8. Usine selon l'une quelconque des revendications précédentes, caractérisée par le fait que l'installation de mise en place (MP) des armatures comporte un dispositif de levage (64) pouvant déplacer les diverses charges suivant une inclinaison voulue et un dispositif de pose équipé d'un cadre (65) ayant une série de poutres (66) réglables suivant la direction longitudinale et une série de pièces d'accrochage (67) réglables dans le sens de la largeur.8. Factory according to any one of the preceding claims, characterized in that the installation installation (MP) of the reinforcements comprises a lifting device (64) capable of moving the various loads at a desired inclination and a laying device equipped with a frame (65) having a series of beams (66) adjustable in the longitudinal direction and a series of pieces of hooking (67) adjustable in the width direction. 9. Usine selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle est montée dans une coque ou barge flottante (C) de telle sorte que l'axe du tambour (T) soit orienté suivant le sens de la longueur de la coque, laquelle est équipée de parois transversales (77) servant de support aux paliers du tambour, la longueur de la coque étant au moins égale au double de la longueur du tambour, un volume étant formé pour l'implantation d'une série d'annexes A.9. Factory according to any one of the preceding claims, characterized in that it is mounted in a hull or floating barge (C) so that the axis of the drum (T) is oriented in the direction of the length of the shell, which is equipped with transverse walls (77) serving as support for the bearings of the drum, the length of the shell being at least twice the length of the drum, a volume being formed for the installation of a series Annexes A.
EP79400902A 1978-11-22 1979-11-22 Factory-type installation with a rotating drum for producing concrete, reinforced concrete and/or prestressed concrete products Expired EP0012069B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79400902T ATE2405T1 (en) 1978-11-22 1979-11-22 WORKSHOP-LIKE DEVICE WITH A ROTATING DRUM FOR THE MANUFACTURE OF CONCRETE, PRE-PRESSED AND/OR REINFORCED CONCRETE PRODUCTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7832891 1978-11-22
FR7832891A FR2442116A1 (en) 1978-11-22 1978-11-22 ROTARY DRUM FACTORIES FOR THE MANUFACTURE OF REINFORCED CONCRETE AND PRE-STRESSED CONCRETE PRODUCTS

Publications (2)

Publication Number Publication Date
EP0012069A1 true EP0012069A1 (en) 1980-06-11
EP0012069B1 EP0012069B1 (en) 1983-02-09

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EP79400902A Expired EP0012069B1 (en) 1978-11-22 1979-11-22 Factory-type installation with a rotating drum for producing concrete, reinforced concrete and/or prestressed concrete products

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US (1) US4290740A (en)
EP (1) EP0012069B1 (en)
JP (1) JPS5573506A (en)
AT (1) ATE2405T1 (en)
AU (1) AU528836B2 (en)
BR (1) BR7907564A (en)
CA (1) CA1129630A (en)
DE (1) DE2964753D1 (en)
FR (1) FR2442116A1 (en)
IN (1) IN151059B (en)
MX (1) MX149320A (en)

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CN114407191B (en) * 2021-12-31 2023-10-27 中国建筑第七工程局有限公司 Mould for manufacturing prefabricated box girder steel reinforcement framework
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US2932874A (en) * 1954-11-24 1960-04-19 Concrete Conduit Company Apparatus for manufacturing concrete pipe
FR2060445A5 (en) * 1969-07-25 1971-06-18 Borcoman Mircea
FR2062090A5 (en) * 1969-10-10 1971-06-25 Borcoman Mirdea
FR2208032A1 (en) * 1972-11-24 1974-06-21 Guilloteau Jean
CA997536A (en) * 1973-05-04 1976-09-28 Andre Pilish Mobile concrete manufacturing plant
FR2305284A1 (en) * 1975-03-27 1976-10-22 Borcoman Mircea SINGLE-BLOCK PLANT OR PLANT FOR THE MANUFACTURING OF CONCRETE PRODUCTS, IN PARTICULAR PRE-STRESSED CONCRETE AND / OR REINFORCED CONCRETE
FR2387750A1 (en) * 1978-08-07 1978-11-17 Camus Raymond Mobile plant for making precast concrete panels - is barge chain with concrete making, casting, reinforcing and crane barges

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US2932874A (en) * 1954-11-24 1960-04-19 Concrete Conduit Company Apparatus for manufacturing concrete pipe
FR2060445A5 (en) * 1969-07-25 1971-06-18 Borcoman Mircea
US3720493A (en) * 1969-07-25 1973-03-13 M Borcoman Machine for the manufacture of reinforced concrete or prestressed concrete elements
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CA997536A (en) * 1973-05-04 1976-09-28 Andre Pilish Mobile concrete manufacturing plant
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EP0057635A2 (en) * 1981-02-04 1982-08-11 BORCOMAN, Mircéa Method, self supporting screens and installations for the improvement of the efficiency of the methods of making prestressed concrete products
EP0057635A3 (en) * 1981-02-04 1982-08-18 Mircea Borcoman Method, apparatus, mould supporting structures and installations for the improvement of the efficiency of the methods of making prestressed concrete products
FR2685885A1 (en) * 1992-01-08 1993-07-09 Mircea Borcoman Method, workshops and machines with barrels, support installations and assembly structures for manufacturing mouldable products, especially based on concrete
WO1993013924A1 (en) * 1992-01-08 1993-07-22 Borcoman Mircea Method, barrel subunits and units, service installations and assembly structures for the fabrication of mouldable products, particularly based on concrete
AU660071B2 (en) * 1992-01-08 1995-06-08 Calin Borcoman Manufacture of mouldable products
US5728327A (en) * 1992-01-08 1998-03-17 Borcoman; Mirce A Method, barrel subunits and units, service installations and assembly structures for the fabrication of moldable products, particularly based on concrete
GB2319973A (en) * 1996-12-05 1998-06-10 Toshiharu Tom Miyano Automated machine tool assembly
GB2319973B (en) * 1996-12-05 2001-11-14 Toshiharu Tom Miyano Automated machine tool including a plurality of processing units
CN113601671A (en) * 2021-07-21 2021-11-05 中麒赋能环保科技有限公司 Building rubbish recycling device

Also Published As

Publication number Publication date
EP0012069B1 (en) 1983-02-09
MX149320A (en) 1983-10-17
FR2442116A1 (en) 1980-06-20
DE2964753D1 (en) 1983-03-17
IN151059B (en) 1983-02-19
US4290740A (en) 1981-09-22
FR2442116B1 (en) 1984-12-14
BR7907564A (en) 1980-06-24
CA1129630A (en) 1982-08-17
AU5304479A (en) 1980-05-29
ATE2405T1 (en) 1983-03-15
JPS5573506A (en) 1980-06-03
AU528836B2 (en) 1983-05-12

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