EP0357714B1 - Giessbett - Google Patents

Giessbett Download PDF

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Publication number
EP0357714B1
EP0357714B1 EP19890902094 EP89902094A EP0357714B1 EP 0357714 B1 EP0357714 B1 EP 0357714B1 EP 19890902094 EP19890902094 EP 19890902094 EP 89902094 A EP89902094 A EP 89902094A EP 0357714 B1 EP0357714 B1 EP 0357714B1
Authority
EP
European Patent Office
Prior art keywords
mould
frame structure
casting bed
carrier
bed according
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
Application number
EP19890902094
Other languages
English (en)
French (fr)
Other versions
EP0357714A1 (de
Inventor
Lars Rosenquist
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.)
CBT DATAUTVECKLING AB
Original Assignee
CBT DATAUTVECKLING AB
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 CBT DATAUTVECKLING AB filed Critical CBT DATAUTVECKLING AB
Priority to AT89902094T priority Critical patent/ATE73703T1/de
Publication of EP0357714A1 publication Critical patent/EP0357714A1/de
Application granted granted Critical
Publication of EP0357714B1 publication Critical patent/EP0357714B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables

Definitions

  • the present invention relates to a casting bed for casting concrete slab-like building elements.
  • the present invention relates to a casting bed which will enable concrete to be cast, including the vibration of said concrete, in a rational and simple fashion in comparison with known techniques.
  • the present invention thus relates to a casting bed intended for casting slab-like building elements and comprising a vibrating table and a mould which is vibrated by the vibrating table, which vibrating table includes a first frame structure effective in supporting a mould, and is characterized in, that a mould carrier is provided, which carrier is effective in supporting the mould which mould comprises a flat plate provided with bulkheads; in that the vibrating table includes a second frame structure which can be displaced vertically in relation to the first frame structure and which is intended to raise the mould to a position in which the mould is free from the mould carrier; and in that the second frame structure is provided with one or more vibrators.
  • Figure 1 is a cross-sectional view of the casting bed illustrated in Figure 2 and is taken on the lime A-A in said Figure.
  • the casting bed includes a vibrating table which incorporates the arrangement shown in full lines. Above this arrangement is a further arrangement which is shown in broken lines, the lower part of this further arrangement consisting of a mould carrier 2 and the upper part thereof consisting of a mould 3.
  • the upstanding elements 4 represent reinforcing rods which protrude from the mould 3.
  • the vibrating table 1 includes a first frame structure, generally referenced 10, which is effective in supporting the mould carrier 2.
  • the mould carrier 2 is intended to support the mould 3.
  • the vibrating table 1 also includes a second frame structure, generally referenced 20, which can be displaced vertically in relation to the first frame structure 10, so as to lift the mould 3 to a position in which it is free from the mould carrier 2. This is effected by lifting a number of beams 38, which form part of the second frame structure 20, into abutment with the undersurface 5 of the mould 3, with the aid of piston-cylinder devices 30, 31, such as to raise the mould.
  • the second frame structure 20 is provided with one or more vibrators 11, 12, 13, 14.
  • the mould When the mould is raised to a position in which it is free from the mould carrier 2, solely the mould, which is relatively light in weight, and the concrete and reinforcements therein will be vibrated by means of the second frame structure.
  • the first frame structure 10 includes upper side pieces 21, 22 which are attached to a plurality of mutually parallel square-section beams 23.
  • the first frame structure may be supported on a stand (not shown) which rests on a foundation surface 6.
  • the first frame structure 10 is arranged so that it can be raised and lowered vertically by means of lifting devices operative between the foundation surface 6 and said first frame structure 10.
  • the lifting devices may be of any suitable kind whatsoever, although they will preferably have the form of scissor-type devices 40, 41, 50, 51 which are activated by means of a hydraulic piston-cylinder device 43 in the direction of arrows 44, through the agency of a pull rod 42.
  • the scissors 40, 41 are rigid but pivotally mounted to the attachments 45, 46, such that linear displacement of the pull rod 42 by the piston-cylinder device 43 will result in displacement of displacement members or pushers 47, 48 in the direction of the arrows 49.
  • the scissor-like devices are solely shown schematically in Figure 3, and then in chain lines.
  • the second frame structure 20 is suspended from the beams 23 of the first frame structure, or specifically from the beams 23′ and 23 ⁇ , through the intermediary of hydraulic piston-cylinder devices 30-33.
  • the second frame structure 20 also includes a first elongated rectangular frame 34 which is attached to the piston-cylinder devices 30-33. When retracting the piston rods 37 of respective devices 30-33, the frame 34 will be lifted upwards in Figure 1, as indicated by the arrow 60.
  • first frame 34 Resting on the first frame 34 is a further, second elongated rectangular frame 35. Extending upwardly from the frame 34 are vertical posts or pillars 36, which are joined pairwise at their upper ends with mutually parallel, horizontal beams 38, preferably I-beams.
  • the longitudinal sides of the second rectangular frame 35 are extended beyond the actual rectangle, such as to provide outwardly projecting parts 39.
  • Mounted on these outwardly projecting parts 39 are further vertical posts or pillars 36′, which are connected pairwise with horizontal, mutually parallel beams 61.
  • suction cups 62 Attached to the upper ends of the aforesaid vertical pillars 36′, and thus also to the second frame structure 20, are suction cups 62.
  • the suction cups 62 are intended to lie against the undersurface 5 of the mould 3 when the mould is positioned out of contact with the mould carrier.
  • rubber air pads63 Arranged between the first rectangular frame 34 and the second rectangular frame 35 are rubber air pads63, which may conveniently comprise rubber bellows filled with air, see Figures 1 and 2.
  • the upper surfaces of the side pieces 21, 22 of the first frame structure 10 have mounted thereon a plurality of wheels 64 or rollers on which flanges 65, 66 projecting from the upper long sides of the mould carrier 2 are intended to rest.
  • the mould carrier 2 includes an elongated rectangular frame 70. Extending between the long sides of the frame are a number of mutually parallel beams 71 which are intended to support the mould 3.
  • the mould has longitudinally extending, beam-like sides 72, 73, of which two are provided with said flanges 65, 66 at their respective upper surfaces.
  • the actual mould itself comprises a flat plate 74 which has bulkheads or stop ends 75, 76, 77, 78 located adjacent thereto.
  • the plate will have a suitable thickness, e.g. a thickness of 8 mm in the case of a mould which measures, for instance, 3 x 7 meters.
  • the flanges 65, 66, or some other part, will suitably extend such as to form a means for positioning or holding the mould in relation to the mould carrier.
  • Figure 7 illustrates an alternative embodiment in which the undersurface of the mould plate 74 has mounted thereon claws 79, 80, which can be placed, for instance, in four locations on the plate 74, as indicated in broken lines in Figure 4.
  • claws 79, 80 extend around one flange 81 of the aforesaid beam 71 without being in actual contact with the flange.
  • the configuration of the claws 79, 80 is such as to enable the mould 3 to be raised to a position in which said mould is free from the mould carrier, without the claws coming into contact with said carrier.
  • the claws 79, 80 thus function as positioning members for retaining the mould in connection with the mould carrier, even in those eventualities during manifacture, in which the mould carrier and the mould are turned upside down, so that the mould will face downwards, or in which the mould and the mould carrier are inclined to the horizontal.
  • the second frame structure includes a number of mutually parallel beams 38.
  • these beams are placed and arranged so that they can be raised through the spaces between respective mutually parallel beams 71 of the mould carrier 2 and therewith lift a mould resting on said carrier.
  • the weight of the mould will be carried by the beams 38, which rest on the air cushions 63 via the vertical pillars or posts 36 and the rectangular frame 35.
  • the air cusions rest on the first frame 34.
  • the vibrators 11-14 which may be of any known kind, are mounted on the second rectangular frame 34, only this frame, and its associated pillars 36, 36′ and beams 38, together with the mould 3 and the concrete therein, will be vibrated, these components constituting only a part of the casting bed as a whole, with associated mould carrier and mould.
  • the first mentioned advantage means that the concrete will be agitated more vigorously by a given vibrator, whereas the second advantage results in a lower noise level.
  • suction cups 62 are intended to abut the undersurface 5 of the mould 3, when the mould is located free from the mould carrier. This arrangement will ensure that the mould is held in position while being vibrated.
  • the mould 3 solely comprises a plate provided with bulkheads, or stop ends, means that the bulkheads need not be given a certain clearance angle or arranged so that they can be readily dismantled in order to enable a cured concrete slab to be removed from the mould, in addition to the aforesaid fact that the weight or mass vibrated is lighter or smaller than would be the case if the mould was integral with the mould carrier.
  • the mould plate When a cured, or hardened, concrete slab is to be lifted from the mould, the mould plate is held firmly by suction at its corners, from beneath, by means of suitable suction cups, while the cast and cured concrete slab is lifted from the mould plate with the aid of a traverse crane.
  • the mould plate has a thickness of 8 mm and a plate size of 3 x 7 meters. the sides of the plate will bend downwards sufficiently to enable the slab to leave the mould.
  • a mould of the aforesaid kind is best used in a manufacturing line, where vibration of the mould and its contents constitutes one manufacturing stage in said line and where the mould carriers and respective moulds circulate between various stations, e.g. individual stations which include a reinforcement packing station, a concrete charging station, a vibrating station and a concrete curing station, and a station in which the mould and mould-carrier componemts are dismantled and cleaned.
  • stations e.g. individual stations which include a reinforcement packing station, a concrete charging station, a vibrating station and a concrete curing station, and a station in which the mould and mould-carrier componemts are dismantled and cleaned.
  • Transportation of a mould carrier with associated mould, to and from the casting bed, and transportation of a mould filled with cured concrete from said casting bed is effected with the aid of transporters, such as roller pads, not shown.
  • At least one side piece 21 of the casting bed iso to this end, capable of being raised and lowered between a vertical and a horizontal position about a pivot arm or hinge 81, with the aid of a hydraulic piston-cylinder device 82, as illustrated by the arrows 83.
  • the mould carrier, with associated mould is rolled into the casting bed in the direction of the arrow 84, on a roller path (not shown), with the side piece 21 lowered to its horizontal position.
  • the mould carrier is suitably rolled on its bottom edge surfaces 85.
  • the mould carrier flanges 65, 66 are located at a higher level than the uppermost surface of the wheels 64 of the side pieces in Figure 1, by lowering the first frame structure 10 slightly in comparison with the position shown in Figure 1, with the aid of the lifting devices 40, 41, 50, 51.
  • the side piece 21 is raised to the position illustrated in Figure 1 and the first frame structure 10 is then lifted by the lifting devices 40, 41, 50, 51, so that the mould carrier will rest on the wheels 64.
  • the mould carrier is lifted herewith to a position in which it is free from the roller path used to transport the mould carrier to a position above the casting bed.
  • the mould carrier is rolled away on wheels 64 in a direction into the plane of the paper in Figure 1, and as illustrated by the arrow 86 in Figure 3, wherewith the mould carrier is moved in over a roller path (not shown) for transportation away from the bed.
  • the lifting devices 40, 41, 50, 51 can also be used, to advantage, in the manufacture of concrete elements which comprise two, mutually parallel concrete slabs with intermediate reinforcement.
  • a mould carrier carrying a mould which contains fresh concrete is placed on the casting bed, as illustrated in Figure 1.
  • the first concrete slab of said element, with associated reinforcements protruding therefrom, is then moved to a position in which said slab is located above the mould containing fresh concrete, with the aid of an overhead traverse or some like device.
  • the previously cured concrete slab, with reinforcements protruding therefrom thus hangs over the casting bed with the reinforcements projecting down towards the fresh concrete.
  • the first frame structure is then lifted with the aid of the lifting devices 40, 41, 50, 51, until the reinforcement projecting from the cured concrete slab extends to a pre-determined distance in the fresh concrete, whereafter the mould is lifted by means of the second frame structure 20 to a position in which said mould is free from the mould carrier, whereafter the fresh concrete is vibrated.
  • the lifting devices 40, 41, 50, 51 will thus enable a structural element which has already cured to be placed above the casting bed in a fixed position on a frame or like structure, whereafter the position of the mould relative to the cured concrete element and the reinforcement projecting therefrom can be adjusted with the aid of the lifting devices 40, 41, 50, 51. This is much more advantageous than adjusting the heights of the cured concrete slab, since such adjustment would need the provision of a traverse crane or like device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Casting Devices For Molds (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Claims (10)

1. Giessbett zum Giessen von Plattenbalken mit einem Rütteltisch und einer Giessform die durch den Rütteltisch vibriert ist und der Rütteltisch einen ersten Rahmen als Träger für die Giessform umfasst,dadurch gekennzeichnet, dass ein Träger (2) für die Giessform (3) vorhanden ist, welche Giessform (3) eine flache Platte (74) mit Querwänden (75-78) umfasst, dass der Rütteltisch einen zweiten Rahmen (20) umfasst der bezüglich des ersten Rahmens (10) vertikal verschiebbar ist, um die Giessform (3) bis zu einer Stelle anzuheben, bei der die Giessform (3) frei über dem Formträger (2) ist, und dass der zweite Rahmen (20) mit wenigstens einem Vibrator (11-14) versehen ist.
2. Giessbett nach Patentanspruch 1, dadurch gekennzeichnet, dass der zweite Rahmen (20) vom ersten Rahmen (10) mittels luftgefüllter Gummizylinder (63) oder mittels dementsprechender Federmitteln getragen ist.
3. Giessbett nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass der erste Rahmen (10) mittels Hebemitteln (40, 41, 50, 51) vertikal anhebbar oder absenkbar ist, vorzugsweise mit scherenförmigen Hebemitteln, die zwischen einer Fundationsoberfläche (6) und dem ersten Rahmen (10) zur Wirkung gelangt.
4. Giessbett nach einem der Ansprüche 1,2 oder 3, dadurch gekennzeichnet, dass der Formträger (2) einen Rahmen (70) mit zueinander parallelen Tragelementen (70) zum Unterstützen der Giessform (3) umfasst.
5. Giessbett nach Patentanspruch 4, dadurch gekennzeichnet, dass die Giessform (3) eine flache Platte (74) mit Querwänden oder Anschlägen (75-78) darauf versehen ist.
6. Giessbett nach Patentanspruch 4 oder 5, dadurch gekennzeichnet, dass der zweite Rahmen (20) eine Anzahl paralleler Tragelemente (38) umfasst, die vertikal zwischen den parallelen Trägern (71) des Formträgers (2) anhebbar sind, um die Giessform (3) anzuheben, die auf dem Formträger (2) aufliegt.
7. Giessbett nach einem der Patentansprüche 1,2,3,4,5 oder 6, dadurch gekennzeichnet, dass auf dem zweiten Rahmen (20) Saugnäpfe (62) montiert sind, zum Zweck, dass sie an der Giessform (3) anliegen, wenn die Giessform (3)ihre freie Lage über dem Formträger (2) innehat.
8. Giessbett nach einem der Patentansprüche 1,2,3,4,5,6 oder 7, dadurch gekennzeichnet, dass der erste Rahmen (10) zwei obere vertikale Seitenstücke (21,22) zur Stützung des Formträgers (2) aufweist.
9. Giessbett nach Patentanspruch 8, dadurch gekennzeichnet, dass die Seitenstücke an ihrer oberen Kantenpartie mit Rädern (64) versehen ist, auf denen der Formträger (2) ruht.
10. Giessbett nach Patentanspruch 8 oder 9, dadurch gekennzeichnet, dass wenigstens eines der Seitenstücke (21) zwischen einer vertikalen Lage und einer horizontalen Lage anhebbar und absenkbar ist, derart, dass der Formträger (2) über dem Giessbett horizotal verschiebbar ist, wenn der erwähnde Seitenstück in horizontaler Lage ist.
EP19890902094 1988-01-28 1989-01-27 Giessbett Expired EP0357714B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89902094T ATE73703T1 (de) 1988-01-28 1989-01-27 Giessbett.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800276A SE459959B (sv) 1988-01-28 1988-01-28 Gjutbord
SE8800276 1988-05-25

Publications (2)

Publication Number Publication Date
EP0357714A1 EP0357714A1 (de) 1990-03-14
EP0357714B1 true EP0357714B1 (de) 1992-03-18

Family

ID=20371205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890902094 Expired EP0357714B1 (de) 1988-01-28 1989-01-27 Giessbett

Country Status (3)

Country Link
EP (1) EP0357714B1 (de)
SE (1) SE459959B (de)
WO (1) WO1989007040A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426457A1 (de) * 1974-05-31 1975-12-11 Stetter Gmbh Vorrichtung zum vibrieren von beweglichen formen in der betonindustrie
GB1579634A (en) * 1976-08-12 1980-11-19 Besser Co Noise suppression structure for block making machinery
JPS5424922A (en) * 1977-07-26 1979-02-24 Katsura Kikai Seisakushiyo Kk Vibration equipment for concrete block molding machine
SE425954B (sv) * 1979-07-25 1982-11-29 Westin & Backlund Ab Anordning vid en skak- och/eller vibreringsmaskin

Also Published As

Publication number Publication date
EP0357714A1 (de) 1990-03-14
WO1989007040A1 (en) 1989-08-10
SE8800276L (sv) 1989-07-29
SE459959B (sv) 1989-08-28
SE8800276D0 (sv) 1988-01-28

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