EP0812252A1 - Procede et dispositif pour la production de corps fa onnes longitudinaux realises dans un materiau coulable, notamment de radiers - Google Patents

Procede et dispositif pour la production de corps fa onnes longitudinaux realises dans un materiau coulable, notamment de radiers

Info

Publication number
EP0812252A1
EP0812252A1 EP96931719A EP96931719A EP0812252A1 EP 0812252 A1 EP0812252 A1 EP 0812252A1 EP 96931719 A EP96931719 A EP 96931719A EP 96931719 A EP96931719 A EP 96931719A EP 0812252 A1 EP0812252 A1 EP 0812252A1
Authority
EP
European Patent Office
Prior art keywords
formwork
traction means
casting compound
casting
station
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.)
Withdrawn
Application number
EP96931719A
Other languages
German (de)
English (en)
Inventor
Willi Messerli
Armin Etter
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.)
FMG Verfahrenstechnik AG
Original Assignee
FMG Verfahrenstechnik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FMG Verfahrenstechnik AG filed Critical FMG Verfahrenstechnik AG
Publication of EP0812252A1 publication Critical patent/EP0812252A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B28B23/22—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 assembled from preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/046—Post treatment to obtain pre-stressed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • 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
    • B28B5/02—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 on conveyors of the endless-belt or chain type

Definitions

  • the invention relates to a method for producing elongated molded articles from a castable material, in particular lintel boards, according to the preamble of claim 1.
  • Such methods are already known as construction aids for the production of elongated load-bearing components.
  • a disadvantage of the known methods and devices is that, despite the low productivity, complicated systems and thus high investments are required. Accordingly, the production costs are also high. Changing production to different lengths or even to different cross-sectional shapes requires lengthy changeover work, which also does not meet today's requirements for flexible production and low storage.
  • the filling of the formwork and the hardening of the casting compound on an endless traction means make it possible to transport the molded body out of the casting station immediately after the hardening. Additional lifting and conveying means are thus unnecessary.
  • the longer the traction device is formed the longer the molded body can be produced in a single operation and then for Further processing can be carried out continuously or step by step from the casting station. It is particularly advantageous if the molded body is divided into shorter sections at a cutting station after the casting compound has hardened and if the molded body is transported to the cutting station with the traction means.
  • reinforcement and / or prestressing elements can be positioned in the formwork before the formwork is filled.
  • at least one tension wire can be held under prestress in the formwork, the prestress being maintained until the pulling means is actuated.
  • the formwork is advantageously filled from a filling device which travels in the feed direction via the feed strand of the traction means. This ensures that the casting compound is evenly distributed over long distances. Productivity can be increased if several formworks arranged in parallel next to each other are filled and their content hardens at the same time.
  • formwork separate formwork sections can be placed on the feed strand of the traction means, which are connected by the hardened casting compound and which become part of the molded body.
  • formwork sections can, for example, be clay elements with a U-shaped or E-shaped cross-section, the opening always pointing upwards.
  • the formwork sections are held laterally at least when pouring the casting compound, so that all formwork sections are aligned with one another.
  • the bracket can be carried out, for example, via a laterally sprung rail which is pressed against the formwork sections from both sides.
  • the feed strand of the towing can also be used as formwork itself, the molded body being released from the surface of the feed strand after the casting compound has hardened.
  • the traction device practically takes on the function of an endless and pushable mold. The demolding takes place at the curvature between the feed strand and the return strand, whereby larger impurities are also thrown off at this point. Incidentally, this also applies when separate formwork sections are placed on the traction means. However, the traction means can also be cleaned and / or oiled on its return run so that it is prepared for the next casting process on the conveyor run. Formwork lengths of at least thirty meters are advantageously filled with casting compound on the traction means.
  • thirty lintel boards with a length of one meter can be produced in a single operation, this number being multiplied by the number of formworks lying next to one another in parallel.
  • the formwork length and thus the length of the traction device can easily be several dozen meters.
  • the invention also relates to a device for producing elongated shaped articles from a castable material, in particular lintel boards, beams or the like, which has the features in the preamble and in the characterizing part of claim 13.
  • the traction means is preferably a conveyor belt, in particular made of a flexible material such as e.g. Rubber, spring steel or the like. In certain cases, the traction means could also be a chain.
  • the conveyor belt is provided, at least over part of its total length, with at least two webs running in the conveying direction, which form the lateral formwork walls. This forms an elongated trough or trough of possibly several dozen meters, which can be filled with the casting compound.
  • the webs can be at right angles or at an angle be arranged to the level of the conveyor belt, so that rectangular or trapezoidal shaped bodies are formed in cross section. Other cross-sectional shapes are of course also possible, and in extreme cases even undercuts are conceivable. However, a prerequisite is always sufficient elasticity of the webs to enable demolding in the area of curvature between the feed strand and the return strand.
  • the webs can also only extend approximately over the length of the conveyor belt, so that an approximately equally long section of the conveyor belt is designed as a flat belt.
  • This arrangement has the advantage that different basic types of shaped bodies can be produced on the same band, namely those in which the formwork is formed by placed formwork sections and those in which the band itself forms the formwork.
  • a plurality of webs can also be easily arranged side by side in parallel, which form adjacent formwork of the same and / or different width.
  • a plurality of endless traction means to be arranged parallel to one another, which can be driven separately. In this way, different cross-sectional shapes can be produced on the same system, only slight additional investments being required.
  • the cutting station advantageously has a cutting table which adjoins the conveying run of the traction means and is arranged approximately on the same level and above which at least one adjustable and pushable milling head is arranged.
  • the milling head can be arranged on a crane element which can be displaced transversely to the conveying direction of the traction means and which is simultaneously designed as a lifting and conveying means for the cut-to-length shaped bodies.
  • the cutting table itself can also be displaceable in the same direction of movement, so that it can be attached to different traction means sections. The cut moldings can be removed from the cutting station without changing the relative position.
  • the pre-tensioning of the shaped elements takes place particularly advantageously if holding devices for tensioning at least one tensioning wire are arranged in the formwork at the beginning and at the end of the feed strand, a permanent tension being transferable to the tensioning wire by means of a tensioning device.
  • the holding devices are not connected to the traction means, so that the traction means can be set in motion after the tensioning wire has been separated from the holding devices.
  • the filling process can be carried out and automated particularly well if a filling device with a storage container and with a discharge device for the casting compound is arranged above the feed strand and can be displaced in the feed direction.
  • a filling device with a storage container and with a discharge device for the casting compound is arranged above the feed strand and can be displaced in the feed direction.
  • FIG. 1 shows a perspective illustration of an overall system for producing lintel boards
  • FIG. 2 shows a plan view of a cutting station of an alternative exemplary embodiment
  • FIG. 3 shows a side view of the cutting station according to FIG. 2,
  • FIG. 4 shows a top view of a filling device
  • FIG. 5 shows a side view of the filling device according to FIG. 4
  • FIG. 6 is a view of the filling device according to FIG. 4 seen in the conveying direction
  • FIG. 7 shows a top view of the wire feed at a casting station
  • FIG. 8 shows a side view of the arrangement according to FIG. 7,
  • FIG. 9 shows a section of a sound crash board in a perspective view
  • FIG. 10 shows a detail from a concrete lintel board in a perspective view
  • FIG. 11 shows a side view of a traction means
  • FIG. 12 shows a cross section through the traction device according to FIG. 11.
  • FIG. 1 a production plant is shown in a highly simplified manner, which essentially consists of a casting station 1 and a cutting station 2 which is connected to the casting station at the end.
  • Lintel boards of various designs can be produced on the system, the formwork being cast on an endless traction means 3 from a filling device 4.
  • overlong lintel boards are cast next to each other in several parallel rows, which are then cut to the desired length at the cutting station and discharged for removal.
  • tensioning wires are inserted into the formwork before pouring with concrete and held there under tension.
  • individual wire roll holders 5 are arranged in front of the traction means, from which wires 30 can be pulled off. After the front When the wires are inserted into the formwork, they are pulled off with the aid of a drive-over device 11 over the entire length of the traction means 3, anchored, and held under tension with the aid of a prestressing device 7 until the concrete mass has hardened.
  • the filling of the concrete mass into the formwork is carried out with the aid of the filling device 4.
  • This is arranged on the drive-over device 11 so as to be displaceable, which in turn can be pushed forward on the crane tracks 8, 8 'in the direction of arrow a.
  • the crane tracks laterally delimit a table frame 22 which at the same time carries the guide elements for the endless traction means 3.
  • the cutting station 2 adjoins the table frame 22 in the feed direction a. It has a transversely displaceable cutting table 9 which can be moved to individual sections of the traction means 3 and which takes over the individual shaped bodies after the casting and curing.
  • a lifting device 14 is arranged on the crane bridge, with which the shaped bodies which have been cut can be transported from the cutting table 9 in the direction of arrow b to a roller conveyor 15.
  • a plurality of milling heads 13 are also arranged on the lifting device 14, and their distance from one another can be adjusted. With these milling heads, the lintel boards lying on the cutting table 9 are divided into shorter sections by lowering and advancing the lifting device.
  • the cut-to-length lintel boards can be advanced in the direction of arrow c to a strapping machine 16 on the roller conveyor 15. There they are bound into packages and can then be transported by forklift.
  • the individual functions of the entire system can be programmed or controlled on a control unit 17. To operate the whole The system requires little personnel, although no special technical knowledge is required.
  • the material flow could also continue in the conveying direction a of the traction device after being cut to length. Further transport in a vertical direction to another floor would also be conceivable.
  • FIGS. 2 to 8 Further details of the device result from an alternative exemplary embodiment, which is shown in FIGS. 2 to 8 and which differs from the exemplary embodiment according to FIG. 1 mainly by the construction of the cutting station 2.
  • the cutting station 2 only has a single crane running rail 21 which is attached to the booms 18, 18 '. Such a construction is sufficient if the length of the cutting table 9 does not exceed a certain dimension.
  • the overall width of the endless traction means 3 is also smaller than in the exemplary embodiment according to FIG. 1.
  • the cutting table 9 has approximately half the width of the traction means 3 and can therefore remove the lintel boards from the traction means 3 in two positions.
  • a trolley 19 On the crane rail 21, a trolley 19 is attached, which carries the lifting device 14. Instead of a roller conveyor, a simple storage table 20 is used to accommodate the cut-down lintel boards.
  • the construction of the cutting station 2 can also partially be seen in FIG. 6. Here, too, two milling heads 13 are arranged on the rear of the lifting device.
  • FIG. 3 also shows the course of the upper feed run 23 and the lower return run 24 of the endless traction means 3.
  • the table frame 22 is not here .
  • the traction means are driven by drive motors, not shown here.
  • a filling device 4 is shown in FIGS. 4 to 6. It can be displaced in the direction of arrow d on the drive-over device 11.
  • the drive-over device is supported on both sides on the drives 25 and 25 ', the drive being effected via a drive motor with drive shafts on the wheels of the drives 25, 25'. In certain cases, the drive-over device 11 could also be pulled over side chains.
  • the filling device 4 is provided with a storage container 26 which can hold a certain amount of concrete.
  • a filling funnel 27 is arranged on the side, wherein filling funnels with different outlet openings can be flanged as required.
  • the concrete is discharged via one or more discharge screws 28.
  • An operator can observe and control the filling process from a platform 29.
  • the filling device is also provided with a vibrator, not shown here, which serves to compact the filled concrete mass in the formwork.
  • FIGS. 7 and 8 A total of four wire roll holders 5 are shown in FIGS. 7 and 8, from which a tensioning wire 30 can be pulled off.
  • the pretensioning device 7 essentially consists of a hydraulic pressure medium cylinder with a continuously adjustable tensile load. The clamping force is transferred to the tensioning wire using collets not shown here. The relatively rigid tension wire 30 is introduced into the formwork using the drive-over device 11.
  • FIGS. 9 and 10 show two fundamentally different types of lintel boards.
  • FIG. 9 shows a sound drop 31, which is composed of E-shaped sound elements 34 on the outside. stands. These clay elements are placed on a flat belt 35 and form the formwork for receiving the concrete mass 33, which connects the individual clay elements to one another after curing. The whole construction is prestressed with two tension wires 30.
  • the tone elements 34 could also have a different cross-sectional shape if required.
  • FIG. 10 shows a concrete lintel 32 which consists exclusively of a prestressed concrete sleeper.
  • the formwork is formed by the profile belt 36, which is provided with lateral webs 37.
  • the concrete mass 33 is poured into the trough formed in this way and is also prestressed by two tensioning wires 30.
  • FIG. 11 and 12 Details of such a profile belt are shown in Figures 11 and 12.
  • the profile belt is stretched around the front roller 40 and the rear roller 41.
  • a total of seven vertical webs 37 form six trough-like formworks which lie directly next to one another.
  • the vertical webs 37 do not extend over the entire traction means 3, but only approximately over the length of the feed strand 23.
  • a section of the traction means of approximately the same length is thus designed as a simple flat belt.
  • lintel lintels 31 according to FIG. 9 and concrete lintels 32 according to FIG. 10 can be produced on the flat side with the same traction means.
  • the profile belt could also have an upper and a lower run with a different number and / or shape of the webs.
  • FIG. 11 shows the traction means just when turning for the preparation of a new production of Concrete lintels.
  • the hardened lintel boards When the hardened lintel boards are extended, they come out of the formwork in the area of curvature of the front roller 40.
  • the band curvature also blows away concrete residues. Contaminants still adhering to the belt are removed via cleaning brushes 38.
  • the surface of the belt is then oiled via spray nozzles 39 so that the falls can be detached from the belt more easily.
  • the device works as follows in the production of sound drops: the individual sound elements are lined up one behind the other and on the flat side of the traction means 3, the tape being able to be slowly advanced.
  • a displaceable insertion platform can be arranged at the beginning of the belt in the area of the rear roller, from which the clay elements can be removed at the correct height.
  • the maximum possible length that can be fitted with clay elements corresponds to the length of the feed strand 23.
  • the tensioning wires are drawn into each individual row of clay elements.
  • the tensioning wires are then brought to the desired tension using the pretensioning device.
  • the formwork formed by the clay elements is poured out with the aid of the filling device 4, several formworks being able to be filled simultaneously, depending on the type of filling funnel used.
  • the filling device simultaneously scrapes and compactes the concrete mass on the surface.
  • the concrete mass hardens, usually overnight. If necessary, the hardening process can be accelerated by suitable means.
  • the tension wires remain under tension during the entire curing time.
  • the traction means 3 is set in motion, and depending on the construction of the device, only individual sections can be driven. The drive takes place until a partial length of the lintel boards lies on the cutting table 9. This is followed by cutting to length with the milling heads and removing the cut lintel boards. Then the traction device is set in motion again and the process is repeated until the entire cast length of the lintel boards has been discharged and cut to length.
  • the described method and the described device are not limited to the manufacture of lintel boards.
  • other elongated shaped bodies can also be produced from castable material, e.g. Concrete sleepers for railroad tracks, concrete piles for agriculture, insulation elements for building insulation, floor slabs and much more.
  • plastics or pourable metals can also be used as pourable material.
  • the individual formworks already have transverse subdivisions, so that subsequent cutting to length at a cutting station is not necessary and the individual molded bodies are cast in the correct dimension.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

Les corps façonnés longitudinaux sont coulés, dans une unité de coulée (1), dans des coffrages en forme d'auge s'étendant parallèlement les uns à côté des autres. Un élément d'entraînement sans fin (3) sert de support de coffrage ou directement de coffrage. La coulée s'effectue au moyen d'un dispositif de remplissage mobile (4). Après durcissement de la matière coulée, l'élément d'entraînement (3) est mis en action et les pièces coulées, lesquelles peuvent être de plusieurs dizaines de mètres de longueur, sont transportées directement vers une unité de découpage (2) où elles sont découpées en plus courts tronçons. L'utilisation de l'élément d'entraînement sans fin comme support du coffrage ou comme coffrage simplifie considérablement le mode opératoire et permet de supprimer les opérations de transport et de démoulage.
EP96931719A 1995-11-14 1996-10-07 Procede et dispositif pour la production de corps fa onnes longitudinaux realises dans un materiau coulable, notamment de radiers Withdrawn EP0812252A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3223/95 1995-11-14
CH322395 1995-11-14
PCT/CH1996/000351 WO1997018070A1 (fr) 1995-11-14 1996-10-07 Procede et dispositif pour la production de corps façonnes longitudinaux realises dans un materiau coulable, notamment de radiers

Publications (1)

Publication Number Publication Date
EP0812252A1 true EP0812252A1 (fr) 1997-12-17

Family

ID=4251311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96931719A Withdrawn EP0812252A1 (fr) 1995-11-14 1996-10-07 Procede et dispositif pour la production de corps fa onnes longitudinaux realises dans un materiau coulable, notamment de radiers

Country Status (2)

Country Link
EP (1) EP0812252A1 (fr)
WO (1) WO1997018070A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790991B1 (fr) * 1999-03-17 2001-05-25 Rector Sa Equipement pour la fabrication de poutrelles en beton precontraint et procede de mise en oeuvre
FR2848589A1 (fr) * 2002-12-16 2004-06-18 Rector Sa Procede de fabrication de poutres en beton et installation mettant en oeuvre ledit procede
AT507211B1 (de) 2009-01-07 2010-03-15 Schlackl Franz Vorrichtung zum herstellen von betonträgern, insbesondere deckenträgern
DE102022108441A1 (de) 2022-04-07 2023-10-12 Kehratec Gmbh Fertigungstisch und Verfahren zur Herstellung von aus mehreren Platten bestehenden Paneelen

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Publication number Priority date Publication date Assignee Title
US1430885A (en) * 1922-04-11 1922-10-03 Cafferata Bernard Joseph Plaster-slab-molding machine
FR904435A (fr) * 1943-12-31 1945-11-06 Procédé de fabrication d'éléments en béton
US3055073A (en) * 1959-11-06 1962-09-25 Ben C Gerwick Inc Method and apparatus for the continuous production of prestressed concrete members
US3172932A (en) * 1963-11-22 1965-03-09 Method of manufacturing a concrete plank
FR1604862A (fr) * 1967-11-27 1972-04-17
GB1330636A (en) * 1969-09-30 1973-09-19 Flowcrete Ltd Production of prestressed concrete
YU32756B (en) * 1969-12-19 1975-06-30 M Manfredini Uredaj za automatsku izradu armiranih gradevinskih nosaca od niza profilisanih opeka
WO1981002865A1 (fr) * 1980-04-09 1981-10-15 Betong Sabema Ab A Procede et appareil de fabrication d'elements
DE3416885A1 (de) * 1984-01-07 1985-11-14 Heinz von 5840 Schwerte Döllen Vorrichtung zur herstellung von bauteilen aus zement, ton o.dgl.
NZ226585A (en) * 1988-10-14 1992-04-28 Fibre Cement Technology Ltd Ferrocement panels shifted off conveyor with mortar in plastic state
SK97597A3 (en) * 1995-01-18 1997-11-05 Leitl Spannton Gmbh Process and installation for producing bearing components

Non-Patent Citations (1)

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Title
See references of WO9718070A1 *

Also Published As

Publication number Publication date
WO1997018070A1 (fr) 1997-05-22

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