EP0342657B1 - Shuttering for simultaneously making several arc-shaped elements from concrete or the like. - Google Patents

Shuttering for simultaneously making several arc-shaped elements from concrete or the like. Download PDF

Info

Publication number
EP0342657B1
EP0342657B1 EP89108889A EP89108889A EP0342657B1 EP 0342657 B1 EP0342657 B1 EP 0342657B1 EP 89108889 A EP89108889 A EP 89108889A EP 89108889 A EP89108889 A EP 89108889A EP 0342657 B1 EP0342657 B1 EP 0342657B1
Authority
EP
European Patent Office
Prior art keywords
shuttering
rings
shuttering device
formwork
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89108889A
Other languages
German (de)
French (fr)
Other versions
EP0342657A3 (en
EP0342657A2 (en
Inventor
Anton Heninger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT89108889T priority Critical patent/ATE92835T1/en
Publication of EP0342657A2 publication Critical patent/EP0342657A2/en
Publication of EP0342657A3 publication Critical patent/EP0342657A3/en
Application granted granted Critical
Publication of EP0342657B1 publication Critical patent/EP0342657B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/14—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/10—Producing shaped prefabricated articles from the material by vibrating or jolting and applying pressure otherwise than by the use of presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
    • B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/08—Moulds provided with means for tilting or inverting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
    • B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces

Definitions

  • the invention relates to a formwork device for the simultaneous production of several arcuately curved prefabricated parts made of concrete or the like.
  • Concentric arrangement are firmly connected to each other, with an axially displaceable floor ring is arranged in each mold space formed between adjacent formwork rings, from which project downward axial ejector rods guided through bores in the connecting element, the ends of which are connected to a positioning plate which is connected to the ejector rods by an actuating device is axially adjustable with respect to the connecting element with the formwork rings.
  • Such a formwork device is already known (SU-A 1 101 348).
  • two mold spaces are formed between three concentric formwork rings, which are firmly connected to a vibrating table forming the connecting element and, as this does not experience any change in position during the entire production process.
  • the ejector rods which are led out of the mold spaces downwards through the vibrating table openings, are, like the actuating device, in one below the vibrating table provided provided floor pit.
  • the mold cavities are filled with liquid concrete from above with ejector rods extended downwards into the floor pit and on the floor rings resting on the vibrating table, after the concrete has hardened into ring-shaped precast elements, these are ejected from the mold rooms by raising the floor rings by means of the adjusting device.
  • the known formwork device enables rational production insofar as two (or more) precast concrete parts are produced simultaneously with a common filling process, a single vibrating process and a joint ejection.
  • the disadvantage is that the heavy finished parts ejected upwards have to be taken over and somehow placed on the floor. This is only possible by means of a separate gripping and transport device, which must seize and support each finished part separately. This leads to complex overall equipment and also leads to spatial confinement and a complication of the manufacturing steps, because the concrete filling device on the one hand and the gripping and transport device on the other hand have to be arranged alternately at the same location above the vibrating table or the formwork rings.
  • the object of the invention is to make the known formwork device simpler and therefore cheaper and at the same time more user-friendly with regard to the mode of operation caused by the formwork device.
  • the connecting element is formed by radial struts which are supported on a support frame which is firmly connected to them and which receives the ejector rods extended from the mold spaces and has a flat lower receiving surface for setting up the formwork device on a vibrating table, and in that the formwork device support pin for attaching the formwork device to a lifting device and for turning the raised formwork device and has a tensioning device for holding down the formwork device.
  • a separate gripping and transport device for taking over and setting down the finished parts can be dispensed with, even in the case of heavy finished parts.
  • the finished parts When the formwork is removed by extending the ejector rods, the finished parts remain in this position and the formwork device is raised against it. If the intended lifting device can be moved in the manner of a trolley, the finished parts can each be set down and switched off at a suitable vacant position.
  • the formwork rings which are closed in the circumferential direction, result in high stability and particularly good dimensional and dimensional stability of the precast concrete parts.
  • the pressure of the filled concrete is evenly distributed over the Formwork rings that remain essentially free of bending stresses. This enables thin-walled formwork rings with high dimensional accuracy of the finished parts.
  • This also applies to the inner and outer formwork rings, which are not pressurized on both sides by the filling pressure and can therefore be made somewhat stronger than the middle formwork rings.
  • the device is comparatively light and easy to handle. Working with this device is additionally facilitated by the measures provided and can be carried out by operating personnel without any special knowledge. Since the formwork rings are firmly connected to one another, there is no need for complex assembly or disassembly of the device before or after each filling with concrete.
  • the height of the mold spaces can be varied by adjusting the setting plate with the ejector rods, so that rings with different axial widths can be produced according to the respective requirements.
  • the floor rings are retracted by means of the actuating device over a predetermined distance or with a predetermined force while the formwork device is held down, in order to compact the concrete in this way and to maintain the axial width or height of the finished parts to be produced.
  • the clamping device used for holding down is released, so that when the floor rings are retracted, the formwork is removed by pushing out the finished parts, the formwork device being raised and the finished parts remaining on the standing surface.
  • the intended processing of only earth-moist concrete has the same effect, because then the stamped or shaken concrete sticks when turning in the narrow mold spaces and there is no need to cover or close the mold spaces beforehand and can also be removed immediately, which favors a high manufacturing output .
  • the intended loosening of ejector rods and locking in the retracted position has the sense that if there is an unequal need for the various standard sizes, the mold space for a smaller number of sizes is simply closed by individually lifting the relevant base ring, so that then in remaining same production, the size in question is left out within the size range.
  • the rings produced do not have to have a circular shape, but can also be of another, for example, elliptical shape, depending on the intended curvature of the formwork rings.
  • it is provided not only to produce ring-shaped finished parts but also arch-shaped finished parts such as half-arches or quarter-arches. This could be achieved by using dividing walls which extend over the height of the molding space into the molding spaces at appropriate angular intervals. Such a procedure would, however, complicate the manufacture considerably, it also having to be taken into account that, as described above, it may also be necessary to work with mold rooms of different heights. That is why it is in the interest of inexpensive production of a wide range of different finished parts in different shapes and sizes that complete rings are first produced, which can then be divided into appropriate sheets.
  • Paper-concrete in particular is well suited for processing with the formwork device according to the invention, since it has excellent handling and further processing properties.
  • This paper concrete is made from lime and paper and preferably also from cement.
  • the lime and cement are used as binders and paper as an additive.
  • the binders consist of ground tufa and undeleted lime as well as Portland cement in a suitable mixing ratio.
  • the aggregates consist of any length of paper strips from 4 to 8 mm wide. Corresponding waste paper scraps can be obtained as waste products from document shredders in large quantities practically free of charge.
  • the production of such paper concrete is comparatively simple.
  • the binders are mixed with water to form a slurry in a container equipped with a stirrer and a vibrating screen.
  • the aggregates are immersed and soaked in these sludges, whereupon the vibrating screen is raised and the vibrating mechanism is switched on, so that the aggregates (paper chips) are freed from unnecessary sludges.
  • the now finished mixture is shaped (with the formwork device according to the invention) and pressed.
  • the setting time and the strength of the paper concrete can be varied according to the respective requirements.
  • the paper concrete is easy to work with and has a not inconsiderable reinforcing effect due to the tensile strength of the aggregates.
  • the products made from paper concrete are elastic and rigid, comparatively light, heat-insulating, flame-retardant and inexpensive. They can be sawn and neglected without any problems, which, together with the low weight, makes further handling much easier.
  • the paper concrete is particularly well suited for the production of formwork rings, because it enables the molded parts to be produced in closed rings and in larger widths, so that they can be sawn after hardening, for example to the desired width of the wall. This considerably simplifies storage.
  • the paper concrete is suitable for the production of insulation boards, lightweight building boards, partition wall blocks and the like.
  • the paper concrete made with waste paper chips which has a similar structure to Heraklith panels, makes a contribution to reducing the burden on the environment by returning waste paper to the economic cycle.
  • the formwork device 1 has five formwork rings 2, 3, 4, 5 and 6, which have different sizes and are arranged essentially concentrically around the axis 7 of the formwork device.
  • the formwork rings 2 to 6 are formed by sheet metal strips, the upper edges of which are each in one plane.
  • the outer formwork rings 2 and 6 are designed somewhat stronger than the inner formwork rings 3 to 5.
  • the formwork rings 2 to 6 form four mold spaces 8, 9, 10 and 11 between them.
  • the shape of the formwork rings 2 to 6 shown in FIG. 1 corresponds to the shape of the curved finished parts to be produced. In the example shown, this shape differs from the circular shape and corresponds in each case to the shape of two basket arches connected with their ends in a ring.
  • the formwork rings 2 to 6 are based on two radial struts 16 and 17, with which they are firmly connected.
  • the radial struts 16 and 17 intersect at right angles and extend along the minor axis or the major axis of the formwork rings 2 to 6, which are approximately elliptical in plan.
  • the radial struts 16 and 17 are stable metal supports which are connected to one another and to the formwork rings 2 to 6 are welded.
  • the radial struts 16 and 17 each have a support pin 18 with a radially projecting retaining ring 19 at their ends which extend slightly beyond the outer formwork ring 2.
  • the radial struts 16 and 17 lie according to FIGS. 2 and 3 on a support frame 20, with which they are firmly welded.
  • the support frame 20 is a protruding extension of the outer formwork ring 2.
  • the lower end edge 21 of the support frame forms a support surface for placing the formwork device 1 on a vibrating table 22 indicated in FIG. 3.
  • a bushing 25 which in a corresponding vertical bore 26 of the radial strut in question 16 or 17 is used.
  • the sockets 25 have at their lower end a radial flange 27 with mounting holes and are easily replaceable by screws 28 screwed into the radial struts 16 and 17, respectively.
  • the bushings 25 can be made of plastic or brass, for example.
  • the ejector rods 24 have an axial threaded hole 29 at their lower end and are connected to a common adjusting plate 30, against which they are tightened by means of screw bolts 31 screwed into the threaded holes 29.
  • the setting plate 30 and the ejector rods 24 connected to it are also accommodated in the downwardly extended position according to FIG. 2 within the correspondingly high support frame 20.
  • each vertical bore 26 of the struts 16 and 17 opens a horizontal threaded bore 32 into which a cap screw 33 is normally only screwed so far that it does not block the ejector rod 24 in question.
  • Such blocking occurs only when the associated four ejector rods 24 of the same base ring are released from the setting plate 30 by removing the screw bolts 31 and are in the raised position in which the base ring closes the relevant mold space at its upper end by one Prevent filling with concrete.
  • an actuating device 35 is fastened by means of a fastening plate 34, which is only indicated in FIG. 1, on the support cross formed by the radial struts 16 and 17 in the axis 7 of the device.
  • This adjusting device 35 has a hydraulically extendable telescopic piston 36, the end of which is connected to the adjusting plate 30 via a fastening plate 37.
  • the formwork device 1 is suspended from a lifting device (not shown) by means of support cables 38 which engage the support pin 18.
  • Pallets 39 with a plate 40 and two wooden feet 41 are provided, one of which is placed on the vibrating table 22 after the concrete-filled formwork device 1 has been lifted, on which the formwork device is then placed after turning (FIG. 4 ).
  • the actuating device 35 to which two hydraulic lines 42 are connected for retracting and extending the telescopic piston 36 (FIG. 3), also serves to compress the concrete rings placed on the pallet 39 in the formwork device 1.
  • four laterally projecting clamping pins 43 are arranged on the vibrating table 22, on which the supporting pins 18 can be aligned at the outer ends of the radial struts 16, 17.
  • a tensioning device in the form of four turnbuckles 44 is provided, each having two threaded rods 45 and 46, which can be seen with eyes 47 and 48 on a support pin 18 or the associated one Leave the clamping pin 43 in place.
  • the formwork rings 2 to 6 are made of a corrosion-resistant steel sheet, which for example has a thickness of only 2.5 mm in the middle formwork rings 3 to 5.
  • the formwork rings are dimensioned so that the Ring-shaped finished parts 49, 50, 51 and 52 produced in mold spaces 8 to 11 correspond to standard values.
  • the axial width or height of the finished parts 49 to 52 depends on the distance between the adjusting plate 30 and the radial struts 16, 17, which is selected by means of the adjusting device 35 at the beginning of the manufacturing process.
  • finished parts 49 to 52 can be manufactured in sets with axial widths (heights) of 11.5 cm, 17.5 cm or 24 cm.
  • the thickness of the finished parts can be 6 cm, for example, depending on the distance between the formwork rings 2 to 6.
  • the formwork rings 2 to 6 can have diameters (long diameters) of 113.5 cm, 101 cm, 88.5 cm, 76 cm and 63.5 cm, which leads to finished parts 49 to 52 which correspond to the standardized nominal dimensions in the shell.
  • the above values are examples.
  • Other shapes, widths, diameters and wall thicknesses can also be provided.
  • the formwork device 1 described is operated in the following manner: First, the device is placed on the vibrating table 22 by means of the lifting device and the carrying cables 38, as illustrated in FIG. 3. The bottom rings 12 to 15 are adjusted together to the intended height by means of the adjusting device 35. Then the mold spaces 8 to 11 are filled with the above-described paper-concrete while simultaneously shaking the device.
  • the turnbuckles 44 are attached and tightened with the threaded rods 45 and 46, whereupon the actuating device 35 is actuated and the base rings 12 to 15 are partially moved into the mold spaces 8 to 11, so that the filled-in concrete is compacted accordingly (FIG. 5).
  • the turnbuckles 44 are loosened and removed with the threaded rods 45 and 46, whereupon the actuating device 35 is completely retracted, as shown in FIG. 6.
  • the formwork rings 2 to 6 are raised relative to the floor rings 12 to 15 and the finished parts are pushed out of the mold spaces 8 to 11.
  • the finished parts 49 to 52 are now removed from the pallet 39 and can be moved away immediately by means of a forklift so that the formwork device 1 is available for the production of a further set of finished parts.
  • the four ejector rods 24, which are assigned to the base ring, in the molding space of which the finished part that is not required is normally produced, are locked in the position shown in FIG. 6 by tightening the cap screws 33 and released from the adjusting plate 30 by removing the screw bolts 31. Then, even after the actuating device 35 has been actuated and the device has been turned, the mold space in question remains closed, so that only the other mold spaces are filled with concrete and only the corresponding finished parts are produced.
  • the formwork device is also suitable for processing types of concrete other than the paper-concrete described, for example, so-called wood-based concrete, which consists of cement and sawdust or wood shavings, without or with little additions of sand and stone dust.
  • wood-based concrete which consists of cement and sawdust or wood shavings, without or with little additions of sand and stone dust.
  • the wooden parts are usually "mineralized” with cement milk, lime milk, calcium chloride or a similar solution, which stiffens the wood fibers and provides a better adhesive surface for the cement.
  • Wood concrete is also quite suitable for formwork due to its low weight and ease of processing by sawing and nailing. With a plastic fabric reinforcement, the strength can be increased or the sensitivity to breakage reduced without the aforementioned properties being lost.
  • paper-concrete is preferably processed.
  • the formwork device 1 also has five concentrically arranged formwork rings 2 to 6, in which floor rings 12 to 15, which have ejector rods 24, are axially displaceable.
  • the formwork device 1 is suspended on support ropes 38 via support pins 18 arranged on the radial strut 16.
  • the ejector rods 24 are also attached to a setting plate 30 with their outer ends.
  • the formwork device 1 is turned here after turning on a pallet 39, which stands on a vibrating table 22.
  • a central tensioning and adjusting device 53 which can be operated by hand. It shows a long time Threaded spindle 54, which has a rotary handle 55 at its upper end and extends through a guide tube 56.
  • the guide tube 56 like the ejector rods 24, is fastened to the setting plate 30 and projects through a central opening within the radial struts 16 with play.
  • the threaded spindle 54 After turning the device and placing it on the pallet 39, the threaded spindle 54 is screwed with its lower end into a central threaded hole 57 in the vibrating table 22, as shown in FIG. 7. At the other end, the threaded spindle 54 carries a spindle nut 58, which has a hub-shaped threaded part 59 with rotary levers 60 which may be arranged in a cross shape. if necessary, a spoke wheel could also be provided for actuating the threaded part 59.
  • the formwork is removed simply by lifting the formwork device 1 over the support cables 38.
  • the concrete rings are ejected from the mold spaces because they are held down by the floor rings 12 to 15, which are connected to the vibrating table 22 via the ejector rods 24, the adjusting plate 30 and the threaded spindle 54.
  • the spindle nut 58 is screwed back to the rotary handle 55 and the threaded spindle 54 is screwed out of the vibrating table 22.
  • the formwork device 1 is thus available for the renewed production of a set of precast rings.
  • the pallets 39 must have a central pallet bore 62 for the spindle passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

The shuttering serves for simultaneously making a set of annular finished elements of different standard sizes. It has concentrically arranged shuttering rings 2 to 6 forming between them shaping spaces which are limited at the lower end by bottom rings 12 to 15 and which are filled from the upper end with a paper concrete. After lifting and turning, the shuttering is deposited on a pallet 39, against which it is firmly pressed by means of a clamping device 44 to 46. The bottom rings 12 to 15 are connected via ejector rods 24 to a setting plate 30 which is displaceable relative to the shuttering rings 2 to 6 by means of a hydraulic setting device 35, in order first to compact the concrete in the shaping spaces and then, after the release of the clamping device, to eject the set of finished elements. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Schalungsvorrichtung zur gleichzeitigen Herstellung mehrerer bogenförmig gekrümmter Fertigteile aus Beton oder dgl. in unterschiedlichen Normgrößen von jeweils gleichbleibendem, im wesentlichen rechteckigem Profilquerschnitt, bestehend aus zwischen sich Formräume bildenden endlos geschlossenen Schalungsringen aus gebogenen Blechstreifen, die durch ein Verbindungselement in zueinander konzentrischer Anordnung fest miteinander verbunden sind, wobei in jedem zwischen benachbarten Schalungsringen gebildeten Formraum ein axial verschiebbarer Bodenring angeordnet ist, von dem durch Bohrungen im Verbindungselement geführte axiale Auswerferstangen nach unten ragen, deren Enden mit einer Stellplatte verbunden sind, die mit den Auswerferstangen durch eine Stelleinrichtung gegenüber dem Verbindungselement mit den Schalungsringen axial verstellbar ist.The invention relates to a formwork device for the simultaneous production of several arcuately curved prefabricated parts made of concrete or the like. In different standard sizes, each with a constant, essentially rectangular profile cross section, consisting of endlessly closed formwork rings made of bent sheet metal strips between forming spaces, which are connected to one another by a connecting element Concentric arrangement are firmly connected to each other, with an axially displaceable floor ring is arranged in each mold space formed between adjacent formwork rings, from which project downward axial ejector rods guided through bores in the connecting element, the ends of which are connected to a positioning plate which is connected to the ejector rods by an actuating device is axially adjustable with respect to the connecting element with the formwork rings.

Eine solche Schalungsvorrichtung ist bereits bekannt (SU-A 1 101 348). Dort sind zwei Formräume zwischen drei konzentrischen Schalungsringen gebildet, die fest mit einem das Verbindungselement bildenden Rütteltisch verbunden sind und wie dieser während des gesamten Herstellungsverfahrens keine Lageveränderung erfahren. Die durch Rütteltischöffnungen nach unten aus den Formräumen herausgeführten Auswerferstangen sind ebenso wie die Stelleinrichtung in einer unterhalb des Rütteltisches vorgesehenen Bodengrube aufgenommen. Die Formhohlräume werden bei nach unten in die Bodengrube ausgefahrenen Auswerferstangen und auf dem Rütteltisch aufliegenden Bodenringen von oben mit flüssigem Beton gefüllt, nach dessen Erhärten zu ringförmigen Betonfertigteilen diese durch ein Hochfahren der Bodenringe mittels der Stelleinrichtung nach oben aus den Formräumen ausgestoßen werden.Such a formwork device is already known (SU-A 1 101 348). There, two mold spaces are formed between three concentric formwork rings, which are firmly connected to a vibrating table forming the connecting element and, as this does not experience any change in position during the entire production process. The ejector rods, which are led out of the mold spaces downwards through the vibrating table openings, are, like the actuating device, in one below the vibrating table provided provided floor pit. The mold cavities are filled with liquid concrete from above with ejector rods extended downwards into the floor pit and on the floor rings resting on the vibrating table, after the concrete has hardened into ring-shaped precast elements, these are ejected from the mold rooms by raising the floor rings by means of the adjusting device.

Die bekannte Schalungsvorrichtung ermöglicht eine rationelle Fertigung insoweit, als zwei (oder mehr) Betonfertigteile gleichzeitig mit einem gemeinsamen Füllvorgang, einem einzigen Rüttelvorgang und einem zusammen erfolgenden Ausstoßen hergestellt werden. Nachteilig ist jedoch, daß die nach oben ausgestoßenen schweren Fertigteile übernommen und irgendwie auf dem Boden abgestellt werden müssen. Das ist nur mittels einer gesonderten Greif- und Transporteinrichtung möglich, die jedes Fertigteil gesondert ergreifen und abstützen muß. Das führt zu einer aufwendigen Gesamtausrüstung und führt auch zu räumlicher Enge und einer Komplizierung der Herstellungsschritte, weil die Betoneinfülleinrichtung einerseits sowie die Greif- und Transportvorrichtung andererseits im Wechsel an derselben Stelle oberhalb des Rütteltisches bzw. der Schalungsringe angeordnet bzw. zur Einwirkung gebracht werden müssen.The known formwork device enables rational production insofar as two (or more) precast concrete parts are produced simultaneously with a common filling process, a single vibrating process and a joint ejection. The disadvantage, however, is that the heavy finished parts ejected upwards have to be taken over and somehow placed on the floor. This is only possible by means of a separate gripping and transport device, which must seize and support each finished part separately. This leads to complex overall equipment and also leads to spatial confinement and a complication of the manufacturing steps, because the concrete filling device on the one hand and the gripping and transport device on the other hand have to be arranged alternately at the same location above the vibrating table or the formwork rings.

Dementsprechend liegt der Erfindung die Aufgabe zugrunde, die bekannte Schalungsvorrichtung einfacher und damit preiswerter und zugleich benutzerfreundlicher hinsichtlich der durch die Schalungsvorrichtung bedingten Arbeitsweise auszubilden.Accordingly, the object of the invention is to make the known formwork device simpler and therefore cheaper and at the same time more user-friendly with regard to the mode of operation caused by the formwork device.

Diese Aufgabe wird erfingungsgemäß dadurch gelöst, daß das Verbindungselement von Radialstreben gebildet ist, die auf einem fest mit ihnen verbundenen Stützrahmen abgestützt sind, der die aus den Formräumen ausgefahrenen Auswerferstangen aufnimmt und eine ebene untere Aufnahmefläche zum Aufstellen der Schalungsvorrichtung auf einen Rütteltisch aufweist, und daß die Schalungsvorrichtung Tragzapfen zum Anhängen der Schalungsvorrichtung an ein Hubgerät und zum Wenden der angehobenen Schalungsvorrichtung und eine Spanneinrichtung zum Niederhalten der Schalungsvorrichtung aufweist.According to the invention, this object is achieved in that the connecting element is formed by radial struts which are supported on a support frame which is firmly connected to them and which receives the ejector rods extended from the mold spaces and has a flat lower receiving surface for setting up the formwork device on a vibrating table, and in that the formwork device support pin for attaching the formwork device to a lifting device and for turning the raised formwork device and has a tensioning device for holding down the formwork device.

Durch die erfindungsgemäß vorgesehene Möglichkeit, die Schalungsvorrichtung zu wenden und wahlweise auf der unteren Auflagefläche des Stützrahmens oder auf die oberen Stirnkanten der Schalungsringe aufzustellen, kann auch bei schweren Fertigteilen auf eine gesonderte Greif- und Transportvorrichtung zum Übernehmen und Absetzen der ausgeschalten Fertigteile verzichtet werden. Ebenso ist es nicht erforderlich, eine Bodengrube vorzusehen, um beim Ausschalen nicht in übergroße Höhen zu kommen. Dieses wird durch die der erfindungsgemäßen Schalungsvorrichtung zugeordnete Arbeitsweise erreicht, bei der die Schalungsvorrichtung mit dem Stützrahmen auf den Rütteltisch gestellt und nach dem Erhärten der Betonteile gewendet wird, so daß die auszuschalenden Fertigteile bereits vor dem Ausschalen auf dem Boden oder beispielsweise einer beim Wenden untergelegten Palette stehen. Beim Ausschalen mittels Ausfahrens der Auswerferstangen verbleiben dann die Fertigteile in dieser Stellung und wird die Schalungsvorrichtung demgegenüber abgehoben. Ist das vorgesehene Hubgerät nach Art einer Laufkatze verfahrbar, so können die Fertigteile jeweils an einer geeigneten freien Stelle abgesetzt und ausgeschalt werden.Due to the possibility provided according to the invention of turning the formwork device and optionally placing it on the lower contact surface of the support frame or on the upper end edges of the formwork rings, a separate gripping and transport device for taking over and setting down the finished parts can be dispensed with, even in the case of heavy finished parts. Likewise, it is not necessary to provide a pit in order not to reach excessive heights when stripping. This is achieved by the mode of operation associated with the formwork device according to the invention, in which the formwork device with the support frame is placed on the vibrating table and turned after the concrete parts have hardened, so that the finished parts to be stripped are removed from the formwork on the floor or, for example, a pallet placed under turning stand. When the formwork is removed by extending the ejector rods, the finished parts remain in this position and the formwork device is raised against it. If the intended lifting device can be moved in the manner of a trolley, the finished parts can each be set down and switched off at a suitable vacant position.

Es ist zwar bereits bekannt, eine Schalungsvorrichtung zum Gießen von Betonteilen vor dem Ausschalen unter Einsatz eines Hubgeräts zu wenden (DE-A 34 37 462). In diesem Falle handelt es sich jedoch nicht um eine Schalungsvorrichtung zur Herstellung von Betonbögen oder Betonringen. Außerdem erfolgt das Wenden in komplizierter und entsprechend aufwendiger Weise, indem die Form von einem Träger an einen Kipptisch übergeben wird und diese beiden Teile dabei gegenläufig verschwenkt werden.It is already known to use a formwork device for casting concrete parts before stripping using a lifting device (DE-A 34 37 462). In this case, however, it is not a formwork device for the production of concrete arches or concrete rings. In addition, the turning takes place in a complicated and correspondingly complex manner in that the shape is transferred from a carrier to a tilting table and these two parts are pivoted in opposite directions.

Die in Umfangsrichtung geschlossenen Schalungsringe führen zu einer hohen Stabilität sowie zu einer besonders guten Form- und Maßhaltigkeit der Betonfertigteile. Der Druck des eingefüllten Betons verteilt sich gleichmäßig auf die Schalungsringe, die von Biegebeanspruchungen im wesentlichen frei bleiben. Das ermöglicht dünnwandige Schalungsringe bei gleichzeitig hoher Maßhaltigkeit der hergestellten Fertigteile. Das gilt auch für den innenliegenden und den außenliegenden Schalungsring, die nicht auf beiden Seiten durch den Fülldruck beaufschlagt sind und daher ggf. etwas stärker als die mittleren Schalungsringe ausgeführt werden können. Insgesamt ergibt sich eine vergleichsweise leichte und gut zu handhabende Vorrichtung. Das Arbeiten mit dieser Vorrichtung wird durch die vorgesehenen Maßnahmen zusätzlich erleichtert und kann von Bedienungspersonal ohne besondere Fachkenntnisse durchgeführt werden. Da die Schalungsringe fest miteinander verbunden sind entfällt ein aufwendiges Zusammenbauen bzw. Zerlegen der Vorrichtung vor bzw. nach jedem Füllen mit Beton.The formwork rings, which are closed in the circumferential direction, result in high stability and particularly good dimensional and dimensional stability of the precast concrete parts. The pressure of the filled concrete is evenly distributed over the Formwork rings that remain essentially free of bending stresses. This enables thin-walled formwork rings with high dimensional accuracy of the finished parts. This also applies to the inner and outer formwork rings, which are not pressurized on both sides by the filling pressure and can therefore be made somewhat stronger than the middle formwork rings. Overall, the device is comparatively light and easy to handle. Working with this device is additionally facilitated by the measures provided and can be carried out by operating personnel without any special knowledge. Since the formwork rings are firmly connected to one another, there is no need for complex assembly or disassembly of the device before or after each filling with concrete.

Durch Einstellung der Stellplatte mit den Auswerferstangen läßt sich die Höhe der Formräume variieren, so daß entsprechend dem jeweiligen Bedarf Ringe mit unterschiedlicher axialer Breite hergestellt werden können. Nach dem Einfüllen des Betons und dem Wenden werden die Bodenringe bei niedergehaltener Schalungsvorrichtung mittels der Stelleinrichtung über eine vorbestimmte Strecke bzw. mit vorgegebener Kraft eingefahren, um auf diese Weise den Beton zu verdichten und die axiale Breite oder Höhe der herzustellenden Fertigteile zu erhalten. Dann wird die dem Niederhalten dienende Spanneinrichtung gelöst, so daß bei weiterem Einfahren der Bodenringe die Entschalung durch Ausschieben der Fertigteile stattfindet, wobei die Schalungsvorrichtung angehoben wird und die Fertigteile auf der Standfläche stehen bleiben. Diese kann von einer Transportplatte für die Betonringe gebildet sein, auf welche die Schalungsvorrichtung nach dem Wenden abgestellt wurde. Auch dieses trägt zu einer rationellen Fertigung mit geringem Zeitaufwand und minimaler Beanspruchung der Bedienungspersonen bei. Die vorgesehene Verarbeitung von nur erdfeuchtem Beton wirkt sich in gleichem Sinn aus, weil dann der eingestampfte bzw. gerüttelte Beton beim Wenden in den schmalen Formräumen festhaftet und ein vorheriges Abdecken oder Verschließen der Formräume entfallen und auch sofort entschalt werden kann, was eine hohe Herstellungsleistung begünstigt.The height of the mold spaces can be varied by adjusting the setting plate with the ejector rods, so that rings with different axial widths can be produced according to the respective requirements. After the concrete has been poured in and turned, the floor rings are retracted by means of the actuating device over a predetermined distance or with a predetermined force while the formwork device is held down, in order to compact the concrete in this way and to maintain the axial width or height of the finished parts to be produced. Then the clamping device used for holding down is released, so that when the floor rings are retracted, the formwork is removed by pushing out the finished parts, the formwork device being raised and the finished parts remaining on the standing surface. This can be formed by a transport plate for the concrete rings, on which the formwork device was placed after turning. This also contributes to efficient production with little expenditure of time and minimal effort of operators. The intended processing of only earth-moist concrete has the same effect, because then the stamped or shaken concrete sticks when turning in the narrow mold spaces and there is no need to cover or close the mold spaces beforehand and can also be removed immediately, which favors a high manufacturing output .

Zweckmäßige Ausgestaltungen und Weiterbildungen ergeben sich aus den Unteransprüchen.Appropriate refinements and developments result from the subclaims.

Das danach vorgesehene Lösen von Auswerferstangen und Feststellen in eingefahrener Stellung hat den Sinn, daß bei ungleichem Bedarf an den verschiedenen Normgrößen auf einfache Weise der Formraum für eine in geringerer Anzahl benötigte Größe einfach durch individuelles Anheben des betreffenden Bodenrings verschlossen wird, so daß dann bei im übrigen gleicher Herstellung die betreffende Größe innerhalb der Größenreihe ausgespart wird.The intended loosening of ejector rods and locking in the retracted position has the sense that if there is an unequal need for the various standard sizes, the mold space for a smaller number of sizes is simply closed by individually lifting the relevant base ring, so that then in remaining same production, the size in question is left out within the size range.

Die hergestellten Ringe müssen keine kreisrunde Form aufweisen sondern können auch von anderer beispielsweise elliptischer Gestalt sein - je nach der vorgesehenen Krümmung der Schalungsringe. Im übrigen ist es vorgesehen, nicht nur ringförmige Fertigteile sondern auch bogenförmige Fertigteile wie Halbbögen oder Viertelbögen herzustellen. Dieses würde sich dadurch erreichen lassen, daß in die Formräume in entsprechenden Winkelabständen verteilt sich über die Formraumhöhe erstreckende Trennwände eingesetzt werden. Ein solches Vorgehen würde die Herstellung jedoch beträchtlich komplizieren, wobei auch zu berücksichtigen ist, daß wie vorstehend beschrieben ggf. auch mit unterschiedlich hohen Formräumen gearbeitet werden soll. Deshalb ist im Interesse einer kostengünstigen Herstellung eines breiten Sortiments verschiedener Fertigteile in unterschiedlichen Formen und Größen vorgesehen, daß zunächst vollständige Ringe hergestellt werden, die dann in entsprechende Bögen geteilt werden können.The rings produced do not have to have a circular shape, but can also be of another, for example, elliptical shape, depending on the intended curvature of the formwork rings. In addition, it is provided not only to produce ring-shaped finished parts but also arch-shaped finished parts such as half-arches or quarter-arches. This could be achieved by using dividing walls which extend over the height of the molding space into the molding spaces at appropriate angular intervals. Such a procedure would, however, complicate the manufacture considerably, it also having to be taken into account that, as described above, it may also be necessary to work with mold rooms of different heights. That is why it is in the interest of inexpensive production of a wide range of different finished parts in different shapes and sizes that complete rings are first produced, which can then be divided into appropriate sheets.

Insbesondere Papier-Beton eignet sich gut zur Verarbeitung mit der erfindungsgemäßen Schalungsvorrichtung, da er hervorragende Handhabungs- und Weiterverarbeitungseigenschaften aufweist. Dieser Papierbeton ist aus Traßkalk und Papier sowie vorzugsweise auch aus Traßzement hergestellt. Der Traßkalk und der Traßzement werden als Bindemittel, das Papier als Zuschlagstoff eingesetzt. Die Bindemittel bestehen aus gemahlenem Tuffstein und ungelöschtem Kalk sowie Portlandzement in geeignetem Mischungsverhältnis. Die Zuschlagstoffe bestehen aus beliebig langen Papierstreifen von 4 bis 8 mm Breite. Entsprechende Altpapierschnitzel sind als Abfallprodukt aus Aktenvernichtern in großen Mengen praktisch kostenlos zu erhalten.Paper-concrete in particular is well suited for processing with the formwork device according to the invention, since it has excellent handling and further processing properties. This paper concrete is made from lime and paper and preferably also from cement. The lime and cement are used as binders and paper as an additive. The binders consist of ground tufa and undeleted lime as well as Portland cement in a suitable mixing ratio. The aggregates consist of any length of paper strips from 4 to 8 mm wide. Corresponding waste paper scraps can be obtained as waste products from document shredders in large quantities practically free of charge.

Die Herstellung eines solchen Papierbetons ist vergleichsweise einfach. In einem Behälter, der mit einem Rührwerk und einem Rüttelsieb versehen ist, werden die Bindemittel mit Wasser zu einer Schlämme angerührt. In diese Schlämme werden die Zuschlagstoffe eingetaucht und getränkt, worauf das Rüttelsieb angehoben und die Rüttelmechanik eingeschaltet wird, so daß die Zuschlagstoffe (Papierschnitzel) von überflüssiger Schlämme befreit werden. Die nun fertige Mischung wird (mit der erfindungsgemäßen Schalungsvorrichtung) geformt und gepreßt.The production of such paper concrete is comparatively simple. The binders are mixed with water to form a slurry in a container equipped with a stirrer and a vibrating screen. The aggregates are immersed and soaked in these sludges, whereupon the vibrating screen is raised and the vibrating mechanism is switched on, so that the aggregates (paper chips) are freed from unnecessary sludges. The now finished mixture is shaped (with the formwork device according to the invention) and pressed.

Durch Beimischung entsprechender Anteile an Traßzement und durch Veränderung der Konsistenz der Schlämme können die Abbindezeit und die Festigkeit des Papierbetons entsprechend den jeweiligen Anforderungen variiert werden.By adding appropriate proportions of road cement and changing the consistency of the sludge, the setting time and the strength of the paper concrete can be varied according to the respective requirements.

Der Papierbeton ist durch seine sämige Beschaffenheit sehr gut zu verarbeiten und weist durch die Zugfestigkeit der Zuschlagstoffe einen nicht unerheblichen Armierungseffekt auf. Die Produkte aus dem Papierbeton sind elastisch und biegesteif, vergleichsweise leicht, wärmedämmend, schwer entflammbar und preiswert. Sie lassen sich problemlos sägen und negeln, was zusammen mit dem günstigen Gewicht die weitere Handhabung wesentlich erleichtert.Thanks to its creamy texture, the paper concrete is easy to work with and has a not inconsiderable reinforcing effect due to the tensile strength of the aggregates. The products made from paper concrete are elastic and rigid, comparatively light, heat-insulating, flame-retardant and inexpensive. They can be sawn and neglected without any problems, which, together with the low weight, makes further handling much easier.

Der Papierbeton ist für die Herstellung von Schalungsringen besonders gut geeignet, weil damit die Formteile in geschlossenen Ringen und in größeren Breiten hergestellt werden können, um dann nach dem Erhärten zugesägt zu werden, beispielsweise auf das gewünschte Maß von Mauerbreiten. Dadurch vereinfacht sich die Lagerhaltung beträchtlich. Daneben eignet sich der Papierbeton für die Herstellung von Dämmplatten, Leichtbauplatten, Zwischenwandsteinen und dergleichen.The paper concrete is particularly well suited for the production of formwork rings, because it enables the molded parts to be produced in closed rings and in larger widths, so that they can be sawn after hardening, for example to the desired width of the wall. This considerably simplifies storage. In addition, the paper concrete is suitable for the production of insulation boards, lightweight building boards, partition wall blocks and the like.

Ferner leistet der mit Altpapierschnitzeln hergestellte Papierbeton, der eine ähnliche Struktur wie Heraklith-Platten aufweist, durch Rückführung von Altpapier in den Wirtschaftskreislauf einen Beitrag zur Entlastung der Umwelt.Furthermore, the paper concrete made with waste paper chips, which has a similar structure to Heraklith panels, makes a contribution to reducing the burden on the environment by returning waste paper to the economic cycle.

Zwei Ausführungsbeispiele der Erfindung werden nachfolgend anhand einer schematischen Zeichnung näher erläutert. Es zeigen:

Fig. 1
die Schalungsvorrichtung in Draufsicht;
Fig. 2
einen vertikalen Teilschnitt längs Linie II-II in Fig. 1 in vergrößertem Maßstab,
Figuren 3 bis 6
Vertikalschnitte durch die Vorrichtung zu verschiedenen Zeitpunkten der Herstellung, nämlich nach dem Einfüllen des Betons in die Formräume, nach dem Wenden der Vorrichtung, nach der Preßverdichtung und nach dem Ausschalen der Fertigteile; und
Fig. 7
eine die Preßverdichtung und das Ausschalen betreffende Abwandlung in einer Fig. 4 vergleichbaren Darstellung.
Two exemplary embodiments of the invention are explained in more detail below with the aid of a schematic drawing. Show it:
Fig. 1
the formwork device in plan view;
Fig. 2
2 shows a vertical partial section along line II-II in FIG. 1 on an enlarged scale,
Figures 3 to 6
Vertical sections through the device at different times of manufacture, namely after the concrete has been poured into the mold spaces, after the device has been turned over, after the compaction and after the finished parts have been stripped; and
Fig. 7
a modification relating to compression and stripping in a representation comparable to FIG. 4.

Gemäß Fig. 1 weist die Schalungsvorrichtung 1 fünf Schalungsringe 2, 3, 4, 5 und 6 auf, die unterschiedliche Größen aufweisen und im wesentlichen konzentrisch um die Achse 7 der Schalungsvorrichtung angeordnet sind. Die Schalungsringe 2 bis 6 sind von Blechstreifen gebildet, deren Oberkanten jeweils in einer Ebene liegen. Die äußeren Schalungsringe 2 und 6 sind wie dargestellt etwas stärker als die inneren Schalungsringe 3 bis 5 ausgeführt. Die Schalungsringe 2 bis 6 bilden zwischen sich vier Formräume 8, 9, 10 und 11. Die aus Fig. 1 zu ersehende Form der Schalungsringe 2 bis 6 entspricht der Form der herzustellenden gekrümmten Fertigteile. Beim dargestellten Beispiel weicht diese Form von der Kreisform ab und entspricht jeweils der Form zweier mit ihren Enden ringförmig verbundener Korbbögen.1, the formwork device 1 has five formwork rings 2, 3, 4, 5 and 6, which have different sizes and are arranged essentially concentrically around the axis 7 of the formwork device. The formwork rings 2 to 6 are formed by sheet metal strips, the upper edges of which are each in one plane. As shown, the outer formwork rings 2 and 6 are designed somewhat stronger than the inner formwork rings 3 to 5. The formwork rings 2 to 6 form four mold spaces 8, 9, 10 and 11 between them. The shape of the formwork rings 2 to 6 shown in FIG. 1 corresponds to the shape of the curved finished parts to be produced. In the example shown, this shape differs from the circular shape and corresponds in each case to the shape of two basket arches connected with their ends in a ring.

Die Formräume 8 bis 11 sind wie aus Fig. 3 zu ersehen nach oben offen und an ihrer Unterseite durch Bodenringe 12, 13, 14 und 15 geschlossen. Die Schalungsringe 2 bis 6 stützen sich auf zwei Radialstreben 16 und 17 ab, mit denen sie fest verbunden sind. Die Radialstreben 16 und 17 kreuzen sich rechtwinklig und erstrecken sich längs der kleinen Achse bzw. der größen Achse der im Grundriß etwa ellipsenförmigen Schalungsringe 2 bis 6. Bei den Radialstreben 16 und 17 handelt es sich um stabile Metallträger, die miteinander sowie mit den Schalungsringen 2 bis 6 verschweißt sind. Die Radialstreben 16 und 17 weisen an ihren sich geringfügig bis über den äußeren Schalungsring 2 hinaus erstreckenden Enden jeweils einen Tragzapfen 18 mit einem radial vorspringenden Sicherungsring 19 auf.As can be seen from FIG. 3, the mold spaces 8 to 11 are open at the top and closed on their underside by base rings 12, 13, 14 and 15. The formwork rings 2 to 6 are based on two radial struts 16 and 17, with which they are firmly connected. The radial struts 16 and 17 intersect at right angles and extend along the minor axis or the major axis of the formwork rings 2 to 6, which are approximately elliptical in plan. The radial struts 16 and 17 are stable metal supports which are connected to one another and to the formwork rings 2 to 6 are welded. The radial struts 16 and 17 each have a support pin 18 with a radially projecting retaining ring 19 at their ends which extend slightly beyond the outer formwork ring 2.

Die Radialstreben 16 und 17 liegen gemäß Fig. 2 und 3 auf einem Stützrahmen 20 auf, mit dem sie fest verschweißt sind. Beim Stützrahmen 20 handelt es sich um eine herabragende Verlängerung des äußeren Schalungsrings 2. Die untere Stirnkante 21 des Stützrahmens bildet eine Auflagefläche zum Aufsetzen der Schalungsvorrichtung 1 auf einen in Fig. 3 angedeuteten Rütteltisch 22.The radial struts 16 and 17 lie according to FIGS. 2 and 3 on a support frame 20, with which they are firmly welded. The support frame 20 is a protruding extension of the outer formwork ring 2. The lower end edge 21 of the support frame forms a support surface for placing the formwork device 1 on a vibrating table 22 indicated in FIG. 3.

Wie am deutlichsten aus Fig. 2 zu ersehen tragen die mit Spiel zwischen den Schalungsringen 2 bis 6 angeordneten Bodenringe 12 bis 15 jeweils eine entsprechend ringförmige Auflage 23, die an ihrem Innenumfang wie an ihrem Außenumfang abdichtend am betreffenden Schalungsring anliegt und beispielsweise aus einem gummiartigen Werkstoff bestehen kann. Mit jedem Bodenring 12 bis 15 sind vier Auswerferstangen 24 verschraubt, die parallel zur Achse 7 der Vorrichtung 1 nach unten vorragen, in Winkelabständen von 90° zueinander versetzt sind und jeweils von einer Buchse 25 geführt sind, die in eine entsprechende Vertikalbohrung 26 der betreffenden Radialstrebe 16 bzw. 17 eingesetzt ist. Die Buchsen 25 weisen an ihrem unteren Ende einen Radialflansch 27 mit Befestigungsbohrungen auf und sind durch in die Radialstreben 16 bzw. 17 eingeschraubte Schrauben 28 leicht auswechselbar befestigt. Die Buchsen 25 können beispielsweise aus einem Kunststoff oder auch aus Messing bestehen.As can be seen most clearly from FIG. 2, the floor rings 12 to 15, which are arranged with play between the formwork rings 2 to 6, each carry a corresponding annular support 23, which rests on its inner circumference and on its outer circumference in a sealing manner against the relevant formwork ring and, for example, from a rubber-like material can exist. With each bottom ring 12 to 15 four ejector rods 24 are screwed, which protrude downward parallel to the axis 7 of the device 1, are offset at angular intervals of 90 ° to one another and are each guided by a bushing 25, which in a corresponding vertical bore 26 of the radial strut in question 16 or 17 is used. The sockets 25 have at their lower end a radial flange 27 with mounting holes and are easily replaceable by screws 28 screwed into the radial struts 16 and 17, respectively. The bushings 25 can be made of plastic or brass, for example.

Die Auswerferstangen 24 weisen an ihrem unteren Ende eine axiale Gewindebohrung 29 aus und sind mit einer gemeinsamen Stellplatte 30 verbunden, gegen die sie mittels in die Gewindebohrungen 29 eingeschraubter Schraubbolzen 31 angezogen sind. Die Stellplatte 30 und die mit ihr verbundenen Auswerferstangen 24 sind auch in der nach unten ausgefahrenen Stellung gemäß Fig. 2 innerhalb des entsprechend hohen Stützrahmens 20 aufgenommen.The ejector rods 24 have an axial threaded hole 29 at their lower end and are connected to a common adjusting plate 30, against which they are tightened by means of screw bolts 31 screwed into the threaded holes 29. The setting plate 30 and the ejector rods 24 connected to it are also accommodated in the downwardly extended position according to FIG. 2 within the correspondingly high support frame 20.

In jede Vertikalbohrung 26 der Streben 16 und 17 mündet eine horizontale Gewindebohrung 32, in die eine Kopfschraube 33 normalerweise nur so weit eingeschraubt ist, daß sie die betreffende Auswerferstange 24 nicht blockiert. Ein solches Blockieren erfolgt nur dann, wenn die zusammengehörigen vier Auswerferstangen 24 des selben Bodenrings durch Entfernen der Schraubbolzen 31 von der Stellplatte 30 gelöst sind und sich in der hochgefahrenen Stellung befinden, in welcher der Bodenring den betreffenden Formraum an seinem oberen Ende verschließt, um ein Füllen mit Beton zu verhindern.In each vertical bore 26 of the struts 16 and 17 opens a horizontal threaded bore 32 into which a cap screw 33 is normally only screwed so far that it does not block the ejector rod 24 in question. Such blocking occurs only when the associated four ejector rods 24 of the same base ring are released from the setting plate 30 by removing the screw bolts 31 and are in the raised position in which the base ring closes the relevant mold space at its upper end by one Prevent filling with concrete.

Wie aus Figuren 3 bis 6 zu ersehen ist mittels einer in Fig. 1 nur angedeuteten Befestigungsplatte 34 am von den Radialstreben 16 und 17 gebildeten Tragkreuz in der Achse 7 der Vorrichtung eine Stelleinrichtung 35 befestigt. Diese Stelleinrichtung 35 weist einen hydraulisch ausfahrbaren Teleskopkolben 36 auf, dessen Ende über eine Befestigungsplatte 37 mit der Stellplatte 30 verbunden ist.As can be seen from FIGS. 3 to 6, an actuating device 35 is fastened by means of a fastening plate 34, which is only indicated in FIG. 1, on the support cross formed by the radial struts 16 and 17 in the axis 7 of the device. This adjusting device 35 has a hydraulically extendable telescopic piston 36, the end of which is connected to the adjusting plate 30 via a fastening plate 37.

Wie aus Figuren 3 bis 6 zu ersehen ist die Schalungsvorrichtung 1 über an den Tragzapfen 18 angreifende Tragseile 38 an einem nicht dargestellten Hubgerät aufgehängt. Dabei bilden zwei sich diametral gegenüberliegende Tragzapfen 18, beispielsweise die Tragzapfen an der Radialstrebe 16, eine Schwenkachse zum Wenden der angehobenen Schalungsvorrichtung. Es ist aber zweckmäßig, die Vorrichtung, auch an den beiden anderen Tragzapfen aufzuhängen, um eine stabile Aufhängung zu erhalten und ggf. durch Einholen bzw. Ausfahren dieser Tragseile den Wendevorgang einzuleiten und zu kontrollieren.As can be seen from FIGS. 3 to 6, the formwork device 1 is suspended from a lifting device (not shown) by means of support cables 38 which engage the support pin 18. Two diametrically opposed support pins 18, for example the support pins on the radial strut 16, form a pivot axis for turning the raised formwork device. However, it is expedient to also hang the device on the two other trunnions in order to obtain a stable suspension and, if necessary, to initiate and control the turning process by pulling in or extending these support ropes.

Es sind Paletten 39 mit einer Platte 40 und zwei Füßen 41 aus Holz vorgesehen, von denen jeweils eine nach dem Anheben der mit Beton gefüllten Schalungsvorrichtung 1 auf den Rütteltisch 22 gestellt wird, auf die dann die Schalungsvorrichtung nach dem Wenden aufgesetzt wird (Fig. 4).Pallets 39 with a plate 40 and two wooden feet 41 are provided, one of which is placed on the vibrating table 22 after the concrete-filled formwork device 1 has been lifted, on which the formwork device is then placed after turning (FIG. 4 ).

Die Stelleinrichtung 35, an die zum Ein- und Ausfahren des Teleskopkolbens 36 zwei Hydraulikleitungen 42 angeschlossen sind (Fig. 3), dient auch zur Preßverdichtung der in der Schalungsvorrichtung 1 auf die Palette 39 abgestellten Betonringe. Zu diesem Zweck sind am Rütteltisch 22 vier seitlich vorstehende Spannzapfen 43 angeordnet, auf die sich die Tragzapfen 18 an den äußeren Enden der Radialstreben 16, 17 ausrichten lassen. Zum Anziehen der Schalungsvorrichtung 1 gegen den Rütteltisch 22 bzw. die Palette 39 ist eine Spanneinrichtung in Form von vier Spannschlössern 44 vorgesehen, die jeweils zwei Gewindestangen 45 and 46 aufweisen, die sich mit Augen 47 bzw. 48 auf einen Tragzapfen 18 bzw. den zugeordneten Spannzapfen 43 aufstecken lassen.The actuating device 35, to which two hydraulic lines 42 are connected for retracting and extending the telescopic piston 36 (FIG. 3), also serves to compress the concrete rings placed on the pallet 39 in the formwork device 1. For this purpose, four laterally projecting clamping pins 43 are arranged on the vibrating table 22, on which the supporting pins 18 can be aligned at the outer ends of the radial struts 16, 17. To tighten the formwork device 1 against the vibrating table 22 or the pallet 39, a tensioning device in the form of four turnbuckles 44 is provided, each having two threaded rods 45 and 46, which can be seen with eyes 47 and 48 on a support pin 18 or the associated one Leave the clamping pin 43 in place.

Die Schalungsringe 2 bis 6 sind aus einem korrosionsbeständigen Stahlblech hergestellt, das bei den mittleren Schalungsringen 3 bis 5 beispielsweise eine Stärke von nur 2,5 mm aufweist. Die Schalungsringe sind dabei so bemessen, daß die in den Formräumen 8 bis 11 hergestellten ringförmigen Fertigteile 49, 50, 51 und 52 Normwerten entsprechen. Die axiale Breite bzw. Höhe der Fertigteile 49 bis 52 ist vom Abstand zwischen der Stellplatte 30 und den Radialstreben 16, 17 abhängig, der zu Beginn des Herstellungsvorgangs mittels der Stelleinrichtung 35 gewählt wird. So können beispielsweise Fertigteile 49 bis 52 satzweise mit axialen Breiten (Höhen) von 11,5 cm, 17,5 cm oder 24 cm hergestellt werden. Die Stärke der Fertigteile kann entsprechend dem Abstand zwischen den Schalungsringen 2 bis 6 beispielsweise 6 cm betragen. Die Schalungsringe 2 bis 6 können Durchmesser (langer Durchmesser) von 113,5cm, 101 cm, 88,5 cm, 76 cm und 63,5 cm aufweisen, was zu Fertigteilen 49 bis 52 führt, die den genormten Nennmaßen im Rohbau entsprechen. Die vorgenannten Werte sind Beispiele. Es können auch andere Formen, Breiten, Durchmesser und Wandstärken vorgesehen werden.The formwork rings 2 to 6 are made of a corrosion-resistant steel sheet, which for example has a thickness of only 2.5 mm in the middle formwork rings 3 to 5. The formwork rings are dimensioned so that the Ring-shaped finished parts 49, 50, 51 and 52 produced in mold spaces 8 to 11 correspond to standard values. The axial width or height of the finished parts 49 to 52 depends on the distance between the adjusting plate 30 and the radial struts 16, 17, which is selected by means of the adjusting device 35 at the beginning of the manufacturing process. For example, finished parts 49 to 52 can be manufactured in sets with axial widths (heights) of 11.5 cm, 17.5 cm or 24 cm. The thickness of the finished parts can be 6 cm, for example, depending on the distance between the formwork rings 2 to 6. The formwork rings 2 to 6 can have diameters (long diameters) of 113.5 cm, 101 cm, 88.5 cm, 76 cm and 63.5 cm, which leads to finished parts 49 to 52 which correspond to the standardized nominal dimensions in the shell. The above values are examples. Other shapes, widths, diameters and wall thicknesses can also be provided.

Mit der beschriebenen Schalungsvorrichtung 1 wird in folgender Weise gearbeitet: Zunächst wird die Vorrichtung mittels des Hubgeräts und der Tragseile 38 auf den Rütteltisch 22 gestellt, wie es Fig. 3 veranschaulicht. Die Bodenringe 12 bis 15 werden mittels der Stelleinrichtung 35 gemeinsam auf die vorgesehene Höhe eingestellt. Dann werden die Formräume 8 bis 11 unter gleichzeitigem Rütteln der Vorrichtung mit dem vorstehend beschriebenen Papier-Beton gefüllt.The formwork device 1 described is operated in the following manner: First, the device is placed on the vibrating table 22 by means of the lifting device and the carrying cables 38, as illustrated in FIG. 3. The bottom rings 12 to 15 are adjusted together to the intended height by means of the adjusting device 35. Then the mold spaces 8 to 11 are filled with the above-described paper-concrete while simultaneously shaking the device.

Nunmehr wird die gefüllte Schalungsvorrichtung angehoben, um 180° gewendet und auf eine auf den Rütteltisch 22 gestellte Palette 39 wieder abgesetzt, wie es Fig. 4 veranschaulicht.Now the filled formwork device is lifted, turned through 180 ° and set down again on a pallet 39 placed on the vibrating table 22, as illustrated in FIG. 4.

Sodann werden die Spannschlösser 44 mit den Gewindestangen 45 und 46 angebracht und angezogen, worauf die Stelleinrichtung 35 betätigt und die Bodenringe 12 bis 15 teilweise in die Formräume 8 bis 11 eingefahren werden, so daß der eingefüllte Beton entsprechend verdichtet wird (Fig. 5). Dann werden die Spannschlösser 44 mit den Gewindestangen 45 und 46 gelöst und abgenommen, worauf die Stelleinrichtung 35 vollends eingefahren wird, wie es Fig. 6 zeigt. Dadurch werden die Schalungsringe 2 bis 6 gegenüber den Bodenringen 12 bis 15 angehoben und die Fertigteile aus den Formräumen 8 bis 11 ausgeschoben. Die Fertigteile 49 bis 52 stehen nunmehr entschalt auf der Palette 39 und können sogleich mittels eines Gabelstaplers weggefahren werden, damit die Schalungsvorrichtung 1 für die Herstellung eines weiteren Satzes von Fertigteilen zur Verfügung steht.Then the turnbuckles 44 are attached and tightened with the threaded rods 45 and 46, whereupon the actuating device 35 is actuated and the base rings 12 to 15 are partially moved into the mold spaces 8 to 11, so that the filled-in concrete is compacted accordingly (FIG. 5). Then the turnbuckles 44 are loosened and removed with the threaded rods 45 and 46, whereupon the actuating device 35 is completely retracted, as shown in FIG. 6. As a result, the formwork rings 2 to 6 are raised relative to the floor rings 12 to 15 and the finished parts are pushed out of the mold spaces 8 to 11. The finished parts 49 to 52 are now removed from the pallet 39 and can be moved away immediately by means of a forklift so that the formwork device 1 is available for the production of a further set of finished parts.

Werden nicht alle Fertigteile des Satzes in gleicher Anzahl benötigt, lassen sich mit der Schalungsvorrichtung auch nur die stärker gefragten Fertigteile herstellen. Dazu werden die vier Auswerferstangen 24, die dem Bodenring zugeordnet sind, in dessen Formraum normalerweise das nicht benötigte Fertigteil hergestellt wird, bei der in Fig. 6 gezeigten Stellung durch Anziehen der Kopfschrauben 33 arretiert und durch Entfernen der Schraubbolzen 31 von der Stellplatte 30 gelöst. Dann bleibt auch nach einer Betätigung der Stelleinrichtung 35 und dem Wenden der Vorrichtung der betreffende Formraum verschlossen, so daß nur die anderen Formräume mit Beton gefüllt werden und nur die entsprechenden Fertigteile hergestellt werden.If not all finished parts of the set are required in the same number, only the more popular finished parts can be produced with the formwork device. For this purpose, the four ejector rods 24, which are assigned to the base ring, in the molding space of which the finished part that is not required is normally produced, are locked in the position shown in FIG. 6 by tightening the cap screws 33 and released from the adjusting plate 30 by removing the screw bolts 31. Then, even after the actuating device 35 has been actuated and the device has been turned, the mold space in question remains closed, so that only the other mold spaces are filled with concrete and only the corresponding finished parts are produced.

Es ist ohne weiteres möglich, die ringförmigen Fertigteile 49 bis 52 nach dem vollständigen Abbinden zu Halbbögen (Korbbögen) oder Viertelbögen durchzusägen. Es ist ersichtlich, daß die Schalungsvorrichtung auch zur Verarbeitung anderer Betonsorten als dem beschriebenen Papier-Beton geeignet ist, beispielsweise von sogenanntem Holzbeton, der aus Zement und Sägemehl oder Hobelspänen, ohne oder mit geringen Zusätzen von Sanden und Steinmehlen, besteht. Die Holzteile werden vor dem Mischen mit Zement in der Regel mit Zementmilch, Kalkmilch, Kalziumchlorid oder ähnlicher Lösung "mineralisiert", wodurch die Holzfasern versteift werden und eine bessere Haftfläche für den Zement erhalten wird. Auch ein Holzbeton ist infolge seines geringen Gewichts und der leichten Verarbeitbarkeit durch Sägen und Nageln für Schalungen recht gut geeignet. Mit einer Kunststoffgewebe-Armierung läßt sich die Festigkeit erhöhen bzw. die Bruchempfindlichkeit verringern, ohne daß die vorgenannten Eigenschaften verloren gehen. Vorzugsweise wird jedoch Papier-Beton verarbeitet.It is readily possible to saw through the ring-shaped finished parts 49 to 52 into half-arches (basket arches) or quarter-arches after they have fully set. It can be seen that the formwork device is also suitable for processing types of concrete other than the paper-concrete described, for example, so-called wood-based concrete, which consists of cement and sawdust or wood shavings, without or with little additions of sand and stone dust. Before mixing with cement, the wooden parts are usually "mineralized" with cement milk, lime milk, calcium chloride or a similar solution, which stiffens the wood fibers and provides a better adhesive surface for the cement. Wood concrete is also quite suitable for formwork due to its low weight and ease of processing by sawing and nailing. With a plastic fabric reinforcement, the strength can be increased or the sensitivity to breakage reduced without the aforementioned properties being lost. However, paper-concrete is preferably processed.

Bei der Abwandlung gemäß Figur 7 ist ein ganz entsprechende Schalungsvorrichtung vorgesehen, mit der ebenfalls in der bereits beschriebenen Weise gearbeitet wird. Daher werden für die gleichen oder entsprechenden Bauteile Bezugszeichen wie in den Figuren 1 bis 6 verwendet, wobei die Vorrichtung auch nur in einer Arbeitsstellung - nach dem Wenden und vor dem Verdichten - dargestellt ist.In the modification according to FIG. 7, a completely corresponding formwork device is provided, which is also used in the manner already described. For this reason, reference numerals are used for the same or corresponding components as in FIGS. 1 to 6, the device also being shown only in one working position - after turning and before compacting.

Nach Figur 7 weist die Schalungsvorrichtung 1 gleichfalls fünf konzentrisch angeordnete Schalungsringe 2 bis 6 auf, in denen Bodenringe 12 bis 15, die Auswerferstangen 24 aufweisen, axial verschiebbar sind. Auch hier ist die Schalungsvorrichtung 1 über an der Radialstrebe 16 angeordnete Tragzapfen 18 an Tragseilen 38 aufgehängt. Die Auswerferstangen 24 sind mit ihren äußeren Enden ebenfalls an einer Stellplatte 30 befestigt. Wie dargestellt wird auch hier die Schalungsvorrichtung 1 nach dem Wenden auf eine Palette 39 abgestellt, die auf einem Rütteltisch 22 steht.According to Figure 7, the formwork device 1 also has five concentrically arranged formwork rings 2 to 6, in which floor rings 12 to 15, which have ejector rods 24, are axially displaceable. Here, too, the formwork device 1 is suspended on support ropes 38 via support pins 18 arranged on the radial strut 16. The ejector rods 24 are also attached to a setting plate 30 with their outer ends. As shown, the formwork device 1 is turned here after turning on a pallet 39, which stands on a vibrating table 22.

Im Vergleich zur Ausführungsform gemäß Figuren 1 bis 6 fehlen die dortige Stelleinrichtung 35 und die Spanneinrichtung 44 bis 46, ebenso wie die Spannzapfen 43 am Rütteltisch 22.In comparison to the embodiment according to FIGS. 1 to 6, the actuating device 35 and the clamping device 44 to 46 are missing, as is the clamping pin 43 on the vibrating table 22.

Dafür ist eine zentrale Spann- und Stelleinrichtung 53 vorgesehen, die von Hand betätigbar ist. Sie weise eine lange Gewindespindel 54 auf, die an ihrem oberen Ende einen Drehgriff 55 aufweist und sich durch ein Führungsrohr 56 erstreckt. Das Führungsrohr 56 ist wie die Auswerferstangen 24 an der Stellplatte 30 befestigt und ragt mit Bewegungsspiel durch eine zentrale Öffnung innerhalb der Radialstreben 16.For this purpose, a central tensioning and adjusting device 53 is provided which can be operated by hand. It shows a long time Threaded spindle 54, which has a rotary handle 55 at its upper end and extends through a guide tube 56. The guide tube 56, like the ejector rods 24, is fastened to the setting plate 30 and projects through a central opening within the radial struts 16 with play.

Nach dem Wenden der Vorrichtung und ihrem Abstellen auf der Palette 39 wird die Gewindespindel 54 wie in Fig. 7 dargestellt mit ihrem unteren Ende in eine zentrale Gewindebohrung 57 im Rütteltisch 22 eingeschraubt. Am anderen Ende trägt die Gewindespindel 54 eine Spindelmutter 58, die ein nabenförmiges Gewindeteil 59 mit ggf. kreuzförmig angeordneten Drehhebeln 60 aufweist. ggf. könnte auch ein Speichenrad für die Betätigung des Gewindeteils 59 vorgesehen sein. Diese Betätigung führt nach dem Einschrauben der Gewindespindel 54 in den Rütteltisch 22 dazu, daß sich der Gewindeteil 59 absenkt, an eine Druckplatte 61 bzw. an eine entsprechende Verstärkung der Stellplatte 30 anlegt und diese mit den Auswerferstangen 24 und den Bodenringen 12 bis 15 niederdrückt. Hierdurch wird in Verbindung mit dem Rütteln des Rütteltisches 22 der Beton in den Formräumen 8 bis 11 verdichtet.After turning the device and placing it on the pallet 39, the threaded spindle 54 is screwed with its lower end into a central threaded hole 57 in the vibrating table 22, as shown in FIG. 7. At the other end, the threaded spindle 54 carries a spindle nut 58, which has a hub-shaped threaded part 59 with rotary levers 60 which may be arranged in a cross shape. if necessary, a spoke wheel could also be provided for actuating the threaded part 59. After screwing the threaded spindle 54 into the vibrating table 22, this actuation causes the threaded part 59 to lower, to be applied to a pressure plate 61 or to a corresponding reinforcement of the adjusting plate 30 and to depress it with the ejector rods 24 and the base rings 12 to 15. As a result, the concrete is compacted in the mold spaces 8 to 11 in connection with the vibrating of the vibrating table 22.

Nach dem Verdichten erfolgt des Ausschalen einfach dadurch, daß die Schalungsvorrichtung 1 über die Tragseile 38 angehoben wird. Dabei werden die Betonringe aus den Formräumen ausgestoßen, weil sie von den Bodenringen 12 bis 15 niedergehalten werden, die über die Auswerferstangen 24, die Stellplatte 30 und die Gewindespindel 54 mit dem Rütteltisch 22 verbunden sind. Danach werden die Spindelmutter 58 zum Drehgriff 55 hin zurückgeschraubt und die Gewindespindel 54 aus dem Rütteltisch 22 herausgeschraubt. Damit steht die Schalungsvorrichtung 1 für die erneute Herstellung eines Satzes von Fertigteilringen zur Verfügung. Wie ersichtlich müssen hier die Paletten 39 eine zentrale Palettenbohrung 62 für die Spindeldurchführung aufweisen.After compaction, the formwork is removed simply by lifting the formwork device 1 over the support cables 38. The concrete rings are ejected from the mold spaces because they are held down by the floor rings 12 to 15, which are connected to the vibrating table 22 via the ejector rods 24, the adjusting plate 30 and the threaded spindle 54. Then the spindle nut 58 is screwed back to the rotary handle 55 and the threaded spindle 54 is screwed out of the vibrating table 22. The formwork device 1 is thus available for the renewed production of a set of precast rings. As can be seen, the pallets 39 must have a central pallet bore 62 for the spindle passage.

Claims (11)

  1. A shuttering device for simultaneously making several arcuately curved prefabricated parts (49 to 52) of concrete or the like in different standard sizes of constant, substantially rectangular cross-section, consisting of endless, closed shuttering rings (2 to 6) made of bent sheet metal strips and forming mould cavities (8 to 11) therebetween and which are fixedly connected together in a mutually concentric arrangement by a connecting element (16, 17), wherein an axially movable bottom ring (12 to 15) is arranged in each mould cavity (8 to 11) formed between adjacent shuttering rings (2 to 6), axial ejection rods (24) projecting down from the bottom ring through bores (26) in the connecting element (16, 17) with their ends connected to an adjusting plate (30) which is axially adjustable with the ejection rods (24) relative to the connecting element (16, 17) with the shuttering rings (2 to 6) by means of an adjusting device (35; 54, 58), characterized in that the connecting element is formed from radial struts (16, 17), which are supported in a support frame (20) fixedly connected thereto, which frame receives the ejection rods (24) moving out of the moulding cavities (8 to 11) and has a flat lower support surface (21) for setting up the shuttering device (1) on a vibrator table (22), and in that the shuttering device (1) comprises carrying lugs (18) for suspending the shuttering device on a lifting apparatus and for turning over the suspended shuttering device and a clamping device (44, 45, 46; 54, 57) for holding down the shuttering device (1).
  2. A shuttering device according to claim 1, characterized in that the ejection rods (24) are connected individually releasably to the adjusting plate (30) and the released ejection rods (24) can be set individually into a position inserted into the corresponding mould cavity (8 to 11).
  3. A shuttering device according to claim 2, characterized in that each ejection rod (24) is connected to the adjusting plate (30) by a bolt (36) screwed axially into its lower end and can be locked by a screw (33) screwed into the radial strut (16, 17) transverse thereto.
  4. A shuttering device according to any of claims 1 to 3, characterized in that the ejection rods (24) are guided in bushes (25) fixed interchangeably on the radial struts (16, 17).
  5. A shuttering device according to any of claims 1 to 4, characterized in that the bottom rings (12 to 15) have a seating (23) on their side bounding the mould cavity (8 to 11), which bears in sealed manner on the adjoining shuttering rings (2 to 6).
  6. A shuttering device according to any of claims 1 to 5, characterized in that the carrying lugs (18) for suspending the shuttering device (1) are arranged on the outer ends of the radial struts (16, 17).
  7. A shuttering device according to any of claims 1 to 6, characterized in that the carrying lugs (18) for suspending the shuttering device (1) are at the same time abutments for the clamping device (44, 45, 46) for holding down the turned shuttering device.
  8. A shuttering device according to any of claims 1 to 6, characterized in that the tightening device (54, 57) for holding down the turned shuttering device (1) comprise a threaded spindle (54) which can be screwed through the shuttering device into a threaded bore (57) of the vibrator table (22).
  9. A shuttering device according to claim 8, characterized in that the adjusting device (54, 58) for adjusting the adjusting plate (30) with the ejection rods (24) comprises a nut (58) screwed on to the threaded spindle (54) and which can be tightened against the adjusting plate (30).
  10. A shuttering device according to any of claims 1 to 9, characterized in that there are provided five shuttering rings (2 to 6) for forming four mould cavities (8 to 11) and for the simultaneous manufacture of four prefabricated parts (49 to 52).
  11. A shuttering device according to any of claims 1 to 10, characterized in that the shuttering rings (2 to 6) are bent approximately elliptically in correspondence with a double elliptical arch.
EP89108889A 1988-05-20 1989-05-17 Shuttering for simultaneously making several arc-shaped elements from concrete or the like. Expired - Lifetime EP0342657B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89108889T ATE92835T1 (en) 1988-05-20 1989-05-17 FORMWORK DEVICE FOR THE SIMULTANEOUS PRODUCTION OF SEVERAL ARCH-FORMED CURVED PREFABRICATED PARTS MADE OF CONCRETE OR LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817363A DE3817363A1 (en) 1988-05-20 1988-05-20 SHUTTERING DEVICE FOR THE SIMULTANEOUS PRODUCTION OF SEVERAL ARC-SHAPED FINISHED PRECISION PARTS FROM CONCRETE OR THE LIKE. AND PRECAST ITEM PRODUCED WITH IT
DE3817363 1988-05-20

Publications (3)

Publication Number Publication Date
EP0342657A2 EP0342657A2 (en) 1989-11-23
EP0342657A3 EP0342657A3 (en) 1991-09-11
EP0342657B1 true EP0342657B1 (en) 1993-08-11

Family

ID=6354863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108889A Expired - Lifetime EP0342657B1 (en) 1988-05-20 1989-05-17 Shuttering for simultaneously making several arc-shaped elements from concrete or the like.

Country Status (3)

Country Link
EP (1) EP0342657B1 (en)
AT (1) ATE92835T1 (en)
DE (2) DE3817363A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103057136A (en) * 2012-11-30 2013-04-24 南通捷诺塑胶科技有限公司 Preparation method of polyethylene film with high tearing resistance
CN106965312A (en) * 2017-05-16 2017-07-21 广东中建新型建筑构件有限公司 A kind of prefabricated pipeline internal model of fast assembling-disassembling
CN112936525B (en) * 2019-11-26 2025-02-25 金科新能源有限公司 Casting mold for prefabricated tower
CN113605731A (en) * 2021-07-01 2021-11-05 中国华冶科工集团有限公司 Self-standing concrete supporting plate frame supporting device and method thereof
CN113585738B (en) * 2021-08-24 2022-09-06 中铁建工集团有限公司 A preformed hole template for building civil engineering
CN117248757B (en) * 2023-11-06 2026-02-10 浙江工程设计有限公司 A building structural design for floor beam reinforcement
CN118893695B (en) * 2024-09-20 2025-03-07 盐城市巨能动力机械有限公司 Modularized fast-assembling concrete steel mould

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1707994A (en) * 1925-09-04 1929-04-09 Karl T Romie Apparatus for forming concrete blocks
US2235440A (en) * 1937-09-14 1941-03-18 Mackert Carl Molding apparatus

Also Published As

Publication number Publication date
EP0342657A3 (en) 1991-09-11
EP0342657A2 (en) 1989-11-23
DE58905220D1 (en) 1993-09-16
DE3817363A1 (en) 1989-11-30
ATE92835T1 (en) 1993-08-15

Similar Documents

Publication Publication Date Title
EP0342657B1 (en) Shuttering for simultaneously making several arc-shaped elements from concrete or the like.
DE2832295A1 (en) MOLDING TABLE FOR PRECAST PLATES
DE2457743C3 (en) Height-adjustable support element
DE19912829A1 (en) Method for casting concrete bowl-shaped bodies for shaft base
EP1587656A2 (en) Collapsible formwork
DE10045735A1 (en) Pillar for rotary pillar crane has flange on underside detachably directly connected with extension resistance to anchor rods cast in concrete foundation
DE3203107A1 (en) Apparatus and process for producing angle elements from concrete
DE3515986C2 (en) Method for producing a concrete part serving as a manhole base or shaft bottom and device for carrying out the method
DE2426369C3 (en) Press mold for roof tiles with interchangeable plaster tile insert and device for the prefabrication of tile insert
DE3602070A1 (en) METHOD AND DEVICE FOR THE BIAXIAL CASTING OF CONCRETE STONE
DE3208960A1 (en) MACHINE FOR PRODUCING PRE-PREPARED COMPONENTS THAT ARE USED TO CREATE CONSTRUCTIONS IN THE FIELD OF CONSTRUCTION
AT410295B (en) Method for casting concrete bowl-shaped bodies for shaft base
DE810131C (en) Method and device for vibrating moldings made of soft concrete u. like
EP1277553A2 (en) Method and apparatus for producing a heavy load Gutter and press mould
EP1136213A2 (en) Process and installation for automatic production of hollow bodies out of a mixture
DE2901545A1 (en) METHOD AND DEVICE FOR PRODUCING SHAPED STONES
EP1874514B1 (en) Device for production of moulded concrete blocks
DE29516129U1 (en) Multi-chamber mold for the mechanical production of concrete bodies
DE3745130C2 (en) Hollow reinforced concrete floor panels
DE8118905U1 (en) WORKING DEVICE FOR MOLDING AND DEFORMING CONCRETE ELEMENTS
DE2302172C3 (en) Device for the production of concrete elements, which consist of two spaced apart concrete slabs connected to one another by reinforcement
DE3443602A1 (en) Process and device for producing a concrete moulding
DE2419832A1 (en) Mouldings with interlocking tongues and grooves - for building industry, where mould is opened hydraulically for stripping
DE2805016B2 (en) Process and battery formwork for the production of precast reinforced concrete parts on the construction site
DE10036199A1 (en) Process for the manufacture of products from fiberglass concrete

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19920304

17Q First examination report despatched

Effective date: 19920518

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930811

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930811

Ref country code: GB

Effective date: 19930811

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930811

Ref country code: SE

Effective date: 19930811

Ref country code: NL

Effective date: 19930811

Ref country code: BE

Effective date: 19930811

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19930811

REF Corresponds to:

Ref document number: 92835

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58905220

Country of ref document: DE

Date of ref document: 19930916

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950519

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19950523

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19960517

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960531

Ref country code: CH

Effective date: 19960531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970602

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19971230