EP0139215B1 - Coffrage à éléments mobiles pour pièces préfabriquées en béton - Google Patents

Coffrage à éléments mobiles pour pièces préfabriquées en béton Download PDF

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Publication number
EP0139215B1
EP0139215B1 EP84110970A EP84110970A EP0139215B1 EP 0139215 B1 EP0139215 B1 EP 0139215B1 EP 84110970 A EP84110970 A EP 84110970A EP 84110970 A EP84110970 A EP 84110970A EP 0139215 B1 EP0139215 B1 EP 0139215B1
Authority
EP
European Patent Office
Prior art keywords
mould
stop means
pallet
parts
wall
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
EP84110970A
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German (de)
English (en)
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EP0139215A1 (fr
Inventor
Siegfried Röckelein
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Kaspar Rockelein KG
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Kaspar Rockelein KG
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Publication date
Application filed by Kaspar Rockelein KG filed Critical Kaspar Rockelein KG
Priority to AT84110970T priority Critical patent/ATE31157T1/de
Publication of EP0139215A1 publication Critical patent/EP0139215A1/fr
Application granted granted Critical
Publication of EP0139215B1 publication Critical patent/EP0139215B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • B28B7/186—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for plates, panels or similar sheet- or disc-shaped objects, also flat oblong moulded articles with lateral openings, e.g. panels with openings for doors or windows, grated girders

Definitions

  • the invention relates to a manufacturing device for the production of relatively large, plate-shaped precast concrete parts, in particular for prefabricated ceilings in the form of so-called 8-tone hollow planks, with the features of the preamble of claim 1.
  • Large plate-shaped prefabricated parts of the type in question here are provided with column-shaped cavities running in the longitudinal direction in order to emulate the effect of a T-beam, i. H.
  • the finished parts are subjected to tension in the lower chord area and to pressure in the upper chord area, while the webs remaining between the cavities serve to connect these two belt zones.
  • This ensures the large-volume cavities when molding. that one inserts a corresponding number of parallel tubes into the mold space above the pallet forming the mold base, which engage in corresponding bores of transverse supports, which are arranged transversely to the direction of displacement of these tubes and which limit or subdivide the mold space, if there are several on the same pallet Finished parts corresponding to smaller and different sizes are to be produced in one operation.
  • the molding space formed above the pallet in a manner to be described in more detail is poured and compacted with concrete, after which the pipes are pulled out of the molding space again.
  • This is generally known and has basically been used for a long time for the finished parts in question here.
  • these force-transmitting side connections are achieved in that the adjacent side walls of the finished parts are formed with undercuts, which then form a cavity which is open in the form of a gap at the top and which is delimited by the undercuts. This cavity is filled with in-situ concrete. Because of this design, adjacent precast panels can be supported against one another in such a way that compressive forces can be transferred to the respective neighboring precast element without displacement. According to another known embodiment, the side walls in question are conically narrowing upwards, so that these side walls enclose a wedge-shaped cavity between two adjacent prefabricated parts. In order to be able to ensure the force-transmitting connection here by filling with in-situ concrete, end areas of reinforcing bars of the precast elements must be inserted into this wedge-shaped cavity.
  • a formwork box is fixed in different positions within the mold space formed by the entire pallet base in that it is held laterally by two adjacent moldings, as otherwise used for the formation of the cavities within the Concrete floorboards are used.
  • the two adjacent molded bodies holding the formwork box to be addressed as a longitudinal rack engage in the insertion position in openings which are provided in relatively far apart end walls or cross racks.
  • the formwork box only bears against the mold base formed by the pallet, as long as the stiffness of the structure from the formwork box and the two inserted moldings resists a buoyancy force.
  • Such hollow concrete planks which are kept narrower than the normal width by using the formwork boxes, are basically only used as so-called fitting panels in one or both end areas of a series of several adjacent concrete hollow planks, so that the fitting panels formed using the formwork box lie on the wall with this bled-out longitudinal edge, which the Ceiling supports, and do not lie against another long edge of a hollow concrete floorboard.
  • longitudinal racks like this formwork box, and also transverse racks are only lifted off the pallet after advanced setting of the filled concrete and thus separated from the adjacent side wall sections, so that the upper and lower wall areas in total. which have the same inclinations, as seen upwards towards the respectively adjacent molding space, for which the molding can be removed with little damage.
  • Such a procedure is not suitable for rapid removal, and considerable cleaning work is also required.
  • a known manufacturer of the type mentioned at the beginning - DE-A-3 038 871 - works with the device associated side walls of the mold space, which, seen in the longitudinal direction, have a central wall section projecting into the mold space, so that the longitudinal side walls of the each molded precast concrete part with an undercut for receiving in-situ concrete in the course of the connection between such prefabricated parts.
  • the side walls of the mold are pivotably mounted on parallel links in such a way that they can each be pivoted in one plane parallel to that of the pallet. In the shaped position, the two side walls are the closest to each other.
  • the side walls are initially moved away from them with a predominantly tangential and then with an ever increasing vertical component to the longitudinal side wall of the fresh molding.
  • a more or less damage-free demoulding can be achieved with this relatively complex device.
  • the total area to be detached from the freshly formed finished part of the one-piece side wall is also relatively large as a result of the projecting design of the central wall section, so that considerable adhesive forces occur between the side wall and the adjacent concrete, which in turn increases the risk of damage.
  • each pallet prepared in this way is transferred into the area of the mold of the manufacturing device, after which the moldings and the side walls of the mold are moved into the molding position, whereupon followed by the filling of the mold space with concrete, after its first solidification, the release of the finished part (s) shaped on the pallet by pulling out the moldings and swiveling the side walls of the mold, after which the pallet is used in the manufacturing device and taken to the drying station and so on.
  • the invention has for its object to improve the manufacture of the plate-shaped finished parts in question in such a way that the manufacturing outlay is reduced both in terms of the design of the overall devices involved in the manufacture and in terms of processing time, so that the finished parts can be produced more easily and more cheaply.
  • the wall bodies are designed as tubes and, furthermore, can preferably be actuated in synchronism by the same displacement mechanism.
  • the reinforcement for the finished part can be arranged on the pallet in a processing station upstream of the manufacturing device, as is also the case for transverse and longitudinal supports if several, correspondingly shorter and / or narrower finished parts are to be produced.
  • At least the cross racks also serve to align and hold the reinforcing bars, for which purpose the cross racks are in particular formed in two parts.
  • the lower lower parts of the cross racks are placed on the pallet surface or positioned there before the reinforcing bars are applied, they are designed in such a way that they simplify the insertion of the reinforcing bars in the longitudinal direction of the respective production part and make them particularly precise.
  • the upper parts of the cross racks are placed on the lower parts, which can happen before the pallet is inserted into the manufacturing device for concreting the finished part (s), but some or all upper parts of the transverse racks can only be applied to the associated lower parts within the manufacturing device are, at least partially also in a fixed arrangement on the mold frame of the device.
  • the demolding of the hardened finished parts from the pallets is particularly simple and time-saving, especially when one considers that after the hardening, the preparation of the pallet, namely cleaning and oiling , can take place much more time-saving than is the case with the known pallets with hinged side walls.
  • a total of two successive movement processes are required for the shaping of the freshly formed production part, namely the removal of the wall body and the subsequent lifting of the mold frame, but the first work process of pulling off the wall body is synchronous with the extraction of the mold body which is required anyway to carry out, so that only the lifting of the mold frame as a working step over the required extraction time of the moldings is required.
  • This extremely small additional time requirement for a pallet to remain within the manufacturing device is far exceeded in the known procedure by the time and effort involved in removing the cured molding from the Pallet by folding down the mold side walls provided on the pallet edges and then cleaning the hardened concrete. Oiling and the like is required.
  • the pallet is provided with slots in its edge areas in such a way that reinforcing bars running transversely to the longitudinal direction can be inserted there.
  • the slots are dimensioned such that the space remaining after inserting a reinforcing iron into the slot base is closed by the guide rail of the wall body which retracts when the mold is closed.
  • a bushing is inserted into the correspondingly larger openings in the outer brackets for receiving the shaped bodies, and the sliding property can be adapted to the shaped bodies.
  • at least the bushings of at least one of the two transverse racks, which limit the shape in the longitudinal direction are provided with lugs which are directed downwards towards the mold space floor and touch it as far as possible.
  • the lugs are embedded in corresponding channels in the lower parts of the cross racks. In this way it is achieved that the hollow bodies formed by the shaped bodies are aerated in the finished part and that water collecting there can flow off via the channels formed by the lugs.
  • a method according to the invention for manufacturing using a manufacturing device according to one of claims 9 to 24 results from claim 25.
  • a prefabricated concrete part produced according to one of Claims 4 to 26 is made available, which is characterized according to Claim 27 in that reinforcing bars emerging from the side walls below the undercuts are provided.
  • the top view according to FIG. 1 shows only a hint of the device frame 1, on the vertical guides 2 protruding into the image plane, the side parts (not shown in detail) which are connected to a frame 3 'and which form the side walls 3 of the mold frame when the on the Holders 4 are retracted into the mold together with the tubular shaped bodies 5 held by the wall body 6, as is shown by the displacement position of the holder 4, and thus the shaped body 5 and the wall body 6, shown by solid lines.
  • Transverse racks 7, several of which extend, run transversely to the direction of displacement of the holder 4 or the molded body 5 and the wall body 6 can be provided, depending on how many longitudinal sections of prefabricated parts are to be produced in the mold space designated overall by 10.
  • the holder 4 with the shaped bodies 5 and the two lateral wall bodies 6 is shown in dashed lines - in the direction of the double arrow shown in FIG. 1 - in the position in which the tubular bodies 5 and 6 are pulled out of the molding space 10.
  • the bodies are in this position shown in dashed lines, for example, when a freshly formed molding is to be removed from the mold.
  • the position of the parts 4, 5 and 6 shown in solid lines is therefore referred to with regard to the molded bodies 5 as the insertion position and with regard to the wall bodies 6 as the molded layer, while the position shown in broken lines for the molded bodies 5 is referred to as the extended layer 12 and with respect to the wall bodies 6 as the mold release layer 14 .
  • the sliding guide for the holder 4, to which the shaped bodies 5 and the wall bodies 6 are fastened, is not shown any further. It is firmly connected to the device frame 1.
  • the enlarged partial cross section according to FIG. 2 shows only one side region of the molding space 10 with the side wall 3, which results from a plurality of partial surfaces when the wall body 6 is shifted into the molding position 13 (FIG. 1), which faces the mold interior 10 '.
  • the molding frame 3 ' has a wall section 15 which delimits the upper edge region 24 of the molding space 10 and is slightly inclined to expand the molding space 10 towards the bottom.
  • the wall section 15 runs towards the bottom seen in an edge 16 which adjoins the outer surface of the wall body 6.
  • This lateral surface has a wall part 17 that bulges out toward the interior 10 'of the mold space, which extends from the edge 16 to a guide rail 18 to which the wall body 6, which is designed as a tube, is firmly connected.
  • This guide rail 18 comprises the freely protruding edge part of a side wall extension 19, which is formed on the pallet 8 or is fixedly arranged thereon. The same relationships are present in mirror image in the other side wall area, not shown.
  • Fig. 2 shows the situation with «closed» mold space 10, which means that a pallet 8 is inserted into the device supported by the device frame 1, whereupon the mold frame 3 'is lowered via the indicated vertical guide 2 until it reaches the position shown occupies. Then the wall body 6 and the molded body 5 are inserted into the molding space, which is to be indicated by their cross hatching. So that the side wall 3 of the mold space 10 is closed, which means that between the outer surface of the wall body 6 and the edge 16 of the wall section 15 and between the guide 18 and the side wall extension 19 there are such dense conditions that that in the mold space 10 in the shown Condition now concrete to be filled can not escape through these contact points.
  • supports 20 are provided which are held on the molding frame 3 '. These supports 20 are provided at regular intervals over the length of the tubular wall body 6 in its shaping position.
  • the wall body 6 together with the molding 5 are first pulled out of the molding space.
  • the forces exerted on the adjacent surfaces of the fresh prefabricated part are tangential in nature, so that no adhesive effects occur which could damage the surface of the corresponding concrete walls of the fresh prefabricated part.
  • the mold frame 3 ' is raised. All that has to be done is to loosen the narrow surface strip between the wall section 15 and the adjacent surface part of the fresh finished part.
  • the wall body 6 and the molded body 5 are pulled off with the fresh finished part supported by an end wall, in this case that of the last transverse stop in the pulling direction, this is not the case when the mold frame 3 'is lifted off with respect to the upper edge of the mold space 10. Therefore, the wall section 15 is slightly inclined and narrow, as seen in the vertical direction, so that the release process can be carried out without damage.
  • knobs 42 are provided in the area of the wall sections, which are used to hold cross supports 7. For this purpose, they are provided with groove sections 43 at a corresponding point, as is indicated in FIG. 3.
  • the engagement between the knobs 42 and the groove sections 43 of the transverse racks 7 serves for their precise positioning in different positions in the molding space 10, depending on the length of a finished part to be produced.
  • Fig. 3 shows two pre-cast finished parts, which have the same shape as the cross racks 7 and have corresponding names. These parts are assigned to one another with their end faces. It can be seen that a cavity 25 is formed due to the wall parts 17, which is poured at the construction site with in-situ concrete.
  • FIG. 4 and 5 show a view into the molding space along the direction of displacement of the molded body 5 and the wall body 6 onto the corresponding broad side of a transverse switch 7.
  • the transverse switch has run through a horizontal plane de Parting line 26 divided into a lower part 27 and an upper part 28, as can be seen in particular from the correspondingly exploded view according to FIG. 5.
  • Fig. 4 shows that the knobs 42 engage in groove sections 43, which are introduced in the upper side edge region of the transverse switch 7 or its upper part 28.
  • the contour of the end faces 41 of the transverse switch 7 corresponds to the contour of the side wall 3, so that the transverse switch 7 forms an end to the molding space 10.
  • the lower part 27 of the transverse rack 7 is kept so low that it does not exceed the height of the side wall extensions 19.
  • the height of the lower part 27 is preferably more than 4 cm, so that the pallet is also suitable for the shaping of ceiling panels, which are filled up with in-situ concrete as lost formwork at the construction site.
  • the lower part 27 and the upper part 28 of the transverse stop 7 are provided with some formations, which are explained below.
  • the openings 29 for receiving the molded bodies 5 are formed to a small section 30 in the lower part 27 and to a large section 31 in the upper part 28.
  • the upper part 28 of the transverse storage device 27 is provided between the openings 29 or the large sections 31 to form these openings with vertically directed groove-shaped recesses 39, into which longitudinal storage devices can be inserted in any arrangement in a manner not shown, in order to provide the molding space 10 for the To be able to vary production according to differently dimensioned finished parts. For this reason, a plurality of transverse racks 7 are to be arranged accordingly in a variable manner.
  • Grooved recesses 34 are provided in the upper edge region 32 or in the upward-facing surface of the lower part 27 of the transverse rack 7, which serve to insert reinforcing bars, as will be explained in more detail in connection with FIG. 7.
  • the enlarged view of the transverse storage device 7 in FIG. 6 reveals the details described above.
  • the broad surfaces 36 of the lower part 27 and 38 of the upper part 29, which appear in the direction of view according to FIGS. 4 to 6, are named for both broad sides of the elongated transverse storage device 7. While the broad sides 36 of the lower part 27 lie in vertical planes in the position of use of the lower part, the broad surfaces 38 of the upper part run inclined, as can be seen in particular in FIG. 8, in such a way that the cross-sectional area of the upper part 28 can be seen from the mold space floor 3 extended upwards.
  • the groove-shaped recesses 39 are made in the body of the upper part 28 from the broad sides 38; in such a way that the bottom of the groove runs in the vertical direction.
  • FIG. 7 shows a top view of the surface of the lower part 27 which is directed upward in the state of use and which is defined laterally by the surface sections 32.
  • Recesses 30 in the form of circular sections are incorporated into this surface, which contribute to the formation of the openings 29, the large sections 31 of which are formed accordingly in the upper part 28.
  • groove-shaped recesses in the form of sack grooves 34 are provided, which are opened alternately to the one broad side and to the other broad side 36 of the lower part 27 through openings 35.
  • reinforcement bars can be inserted into the sack grooves in a simple manner such that they only protrude from the mouth 35 only over one broad side 36, while they cannot reach the other broad side 36 of the lower part 27 due to the formation of the sack grooves at the other end.
  • Correspondingly staggered sack grooves 34 are used for reinforcing bars, which are to protrude into the mold space via the other broad side 36 and are open towards the other broad side 36 via openings 35.
  • FIGS. 2 to 11 relate to a first exemplary embodiment of the production device or of a molding produced therewith.
  • a second exemplary embodiment is dealt with on the basis of FIGS. 12 to 18, which differs from the first exemplary embodiment only in details to which the following description of this second exemplary embodiment is limited. For the rest, reference is made to the description of the corresponding figures 1 to 8.
  • the partial cross section corresponding to FIG. 2 12 of the second embodiment shows one of the two side walls 19, into which slots 51, one of which is shown, are made in this embodiment from above against the mold space floor 9 of the pallet 8.
  • slots 51 one of which is shown
  • a large number of such slots are arranged one behind the other in the longitudinal direction, that is to say when looking into the plane of the drawing.
  • the slot base extends transversely to the longitudinal direction of the mold or transversely to the direction of displacement of the wall body 6 and approximately parallel to the mold space floor 9.
  • reinforcing bars 54 can be inserted into the slots 51. This happens either outside the manufacturing device on the pallet or after inserting it into the device before closing the mold.
  • projections 44 are formed on the pallets in the area of the transition between the mold space floor 9 and the side wall extensions 19 of the pallet 8 into the mold space 10 ', with the cams in the vertical direction with a correspondingly exact arrangement of the pallet within the mold 42 correspond.
  • the knobs 42 engage in corresponding groove sections 43 of the upper parts 28 of transverse stops 7, as has already been described in connection with the first exemplary embodiment.
  • the lugs 44 additionally provided in the context of the second embodiment engage in recesses 45 which are formed in the lower parts 27 of the transverse racks 7.
  • a corresponding grid dimension is provided as for the knobs 42.
  • each transverse rack is positioned at the selected location with regard to both its upper part and its lower part by the shape or the pallet and secured against displacements in the longitudinal direction of the shaped bodies 5 or caused by them.
  • the arrangement of the lugs 44 and the recesses 45 can be seen from FIGS. 14 and 15.
  • FIG. 13 shows the row of openings 45 which are caused by the projections in the molding.
  • the transverse stops of the second exemplary embodiment according to FIGS. 14 to 18 are configured largely similarly to those according to the first exemplary embodiment.
  • the openings through which the shaped bodies 5 are introduced are designed somewhat larger and are provided with bushings 48, into which the shaped bodies 5 are inserted appropriately.
  • a better sliding and wear resistance can be achieved by choosing the material of the bushings.
  • the openings 29 ' are made somewhat larger than in the first exemplary embodiment, i. H. the sections 30 'and 31' are chosen to be correspondingly larger in order to be able to accommodate the bushes 48.
  • bushes 48 are provided, which are provided with a nose 49 facing downwards towards the mold space floor 9.
  • These lugs extend to the mold cavity floor 9 when the upper part 28 is placed ready for operation on the lower part 27.
  • the lugs engage in grooves 51, which are formed at a corresponding location and in a corresponding dimension in a side surface of the lower part 27, in such a way that the moldings or finished parts have corresponding groove-shaped indentations 50 at their longitudinal ends, as shown in FIG. 13 is indicated.
  • the cylindrical cavities formed by the shaped bodies 5 are opened at the end downwards, so that no water can accumulate in these cavities.
  • Figure 18 shows a section along the line XVIII-XVIII in Fig. 16 and reveals that in the area between two immediately adjacent groove-shaped recesses for receiving longitudinal reinforcing bars a protruding wedge-shaped projection over the upwardly facing surface of the lower part 27 of the cross adjuster 7 46 is provided, which - as can also be seen in particular from the section according to FIG. 18 - engages in a corresponding recess 45 in the underside of the upper part 28 of the transverse switch.
  • the flanks of the projection are so beveled that the engagement is centered even with slight displacement between the upper and lower part.
  • the lugs 49 of the bushes 48 protrude to form the grooves in the molding or finished part on the side surface of the lower part of the transverse switch.
  • the engagement in grooves 51 provided in the lower part prevents concrete from penetrating between the lugs and the end face of the lower part.
  • the partial areas of the lugs 49 engaging in the grooves 51 help to further stabilize and ensure the engagement between the upper part and the lower part.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Panels For Use In Building Construction (AREA)

Claims (27)

1. Instrument de fabrication pour la réalisation de pièces préfabriquées en béton, relativement grandes, en forme de dalles, en particulier de planchers préfabriqués se présentant sous la forme de ce que l'on appelle des planchers creux en béton qui présentent une multitude d'espaces creux de forme cylindrique, s'étendant parallèlement, caractérisé par le fait que :
a) pour le moulage sont prévus des corps de moulage (5), en particulier des tubes s'étendant de manière adéquate, qui peuvent être transférés mécaniquement sensiblement dans le sens horizontal entre une position d'introduction (11) se trouvant dans l'espace de moulage (10) à remplir par du béton pour la réalisation de la pièce finie ou de plusieurs pièces finies simultanément, et une position de retrait (12) située à l'extérieur de l'espace de moulage (10), position occupée après le bétonnage,
b) l'espace de moulage (10) est délimité ou divisé par une palette (8) pouvant être introduite et extraite, formant le fond (9) sensiblement horizontal de l'espace de moulage et par des parois latérales (3) sensiblement parallèles au sens de déplacement des corps de moulage (5), ces parois étant disposées latéralement aux corps de moulage (5) sur les bords longitudinaux de la palette (8), ainsi que par des parois transversales (7) (des arrêts transversaux), et le cas échéant des arrêts longitudinaux,
c) les parois latérales (3) présentent respectivement une section supérieure (15), une section médiane (17) et une section inférieure (19), la section médiane (17) des parois faisant, par rapport à la section inférieure (19) et à la section supérieure (15), saillie à l'intérieur (10') de l'espace de moulage, ces sections de paroi étant elles-mêmes remarquables par les particularités suivantes :
d) la section supérieure (15) de la paroi est légèrement inclinée vers le haut en direction de l'espace de moulage (10) et peut être transférée en direction de la palette sensiblement perpendiculairement à celle-ci,
e) la section médiane (17) de la paroi est constituée d'un corps (6) qui, en commun avec les corps de moulage (5), peut être transférée entre la position de moulage (13) ou la position d'introduction (11), et la position de démoulage (14) ou la position de retrait (12),
f) la section inférieure (19) de la paroi est constituée d'une amorce de paroi latérale de la palette (8) le long duquel le corps de paroi (6) passe au cours de son transfert.
2. Instrument selon la revendication 1, caractérisé par le fait que les sections médianes (17) de la paroi sont réalisées sous la forme de zones enveloppantes longitudinales du corps de paroi (6), lesquelles sont réalisées, du moins dans cette zone, de préférence sous une forme cylindrique.
3. Instrument selon la revendication 2, caractérisé par le fait que les corps de paroi (6) sont réalisés sous la forme de colonnes cylindriques, en particulier sous la forme de tubes.
4. Instrument selon l'une des revendications 1 à 3, caractérisé par le fait que les corps de paroi (6) sont mobiles longitudinalement grâce à un rail de guidage (18), sur les amorces (19) de la paroi latérale de la palette (8).
5. Instrument selon l'une des revendications 1 à 4, caractérisé par le fait que les corps de paroi (6) dans leur position de moulage (13) peuvent être transférés longitudinalement au moyen de raccords (20) répartis sur leur extension longitudinale et maintenus en application étanche sur le bord adjacent (16) des sections supérieures (15) de la paroi.
6. Instrument selon la revendication 5, caractérisé par le fait que les raccords (20) sont maintenus dans un cadre de moulage (3') pouvant être transféré verticalement, sur lequel sont prévues les sections de paroi (15)..
7. Instrument selon l'une des revendications 3 à 6, caractérisé par le fait que le diamètre des corps de paroi (6) est inférieur à celui des corps de moulage (5).
8. Instrument selon l'une des revendications 1 à 7, caractérisé par le fait que les corps de paroi (6) vus dans le sens vertical, sont plus éloignés du fond (9) de l'espace de moulage que les corps de moulage (5).
9. Instrument selon l'une des revendications 1 à 8, caractérisé par le fait que les arrêts transversaux (7) comportent un joint de séparation (26) sensiblement horizontal et sont constitués respectivement par une partie inférieure (27) devant être montée sur une surface de la palette (8) constituant le fond (9) de l'espace de moulage et une partie supérieure (28) devant être montée par le haut sur la partie inférieure (27).
10. Instrument selon la revendication 9, caractérisé par le fait que les orifices (29) prévus dans les arrêts transversaux (7) pour la réception des corps de moulage (5) sont réalisés de manière à présenter une section plus réduite (30) dans les parties inférieures (27) et une section plus grande (31) dans les parties supérieures (28).
11. Instrument selon la revendication 9 ou 10, caractérisé par le fait que dans les zones (32) des arêtes supérieures des arrêts transversaux (7), pour la mise en place de fers d'armature, sont prévus des évidements (34) en forme de rainures s'étendant horizontalement et sensiblement parallèlement au sens de déplacement du corps de moulage (5).
12. Instrument selon la revendication 11, caractérisé par le fait que les évidements (34) sont réalisés sous la forme de rainures borgnes, réci- prpquement décalées transversalement par rapport au sens de déplacement du corps de moulage (5), les embouchures (35) de ces rainures borgnes étant disposées alternativement dans l'un et dans l'autre des flancs (36) de la partie inférieure (27).
13. Instrument selon la revendication 12, caractérisé par le fait que deux rainures borgnes (34) contiguës dans le sens de leur décalage, forment, dans leur zone de chevauchement, un espace creux commun (37).
14. Instrument selon l'une des revendications 9 à 13, caractérisé par le fait que les parties supérieures (28) des arrêts transversaux (7) sont inclinées réciproquement sur leurs deux flancs (38) de manière à élargir vers le haut la section transversale desdites parties supérieures.
15. Instrument selon l'une des revendications 9 à 14, caractérisé par le fait que dans les flancs (38) des parties supérieures (28) des arrêts transversaux (7) sont prévus des évidements (39) en forme de gorge destinés à recevoir des arrêts longitudinaux à disposer entre les arrêts transversaux (7), le fond desdits évidements étant disposé sensiblement verticalement.
16. Instrument selon l'une des revendications 9 à 15, caractérisé par le fait que sur les flancs (38) de la partie supérieure (28) des arrêts transversaux (7). sont prévues des butées (40) de guidage qui, lors du montage de la partie supérieure (28) sur la partie inférieure correspondante (27) viennent saisir les flancs (36) de ladite partie inférieure (27).
17. Instrument selon l'une des revendications 9 à 16, caractérisé par le fait que les faces frontales (41) des parties supérieures (28) sont ajustées à l'extension de la surface des parois latérales (3) qui délimitent l'espace de moulage (10) lorsque les corps de paroi (6) ont été déplacés dans la position de démoulage (13).
18. Instrument selon l'une des revendications 9 à 17, caractérisé par le fait que les parties inférieures (27) des arrêts transversaux (7) font saillie d'environ 6 cm du fond (9) de l'espace de moulage et sont réalisés de manière à former un plan continu, du côté frontal, avec les parois latérales (3) ou les amorces (19) des parois latérales de la palette (8).
19. Instrument selon l'une des revendications 1 à 18, caractérisé par le fait que dans la zone de bordure supérieure des sections (15) de la paroi, sont prévus des ergots (42) faisant saillie dans l'espace de moulage (10), ces ergots étant distribués dans le sens longitudinal des zones marginales - leur répartition étant de préférence réalisée sous forme d'une grille - et avec lesquels des découpes (43) en forme de gorge peuvent coopérer, ces découpes en forme de gorge se trouvant dans la zone supérieure de la face frontale des parties supérieures (28) des arrêts transversaux (7).
20. Instrument selon la revendication 19, caractérisé par le fait que dans la zone de la transition entre la palette (8) et ses amorces (19) de paroi latérale, sont prévues des butées (44) pénétrant à l'intérieur (10') de l'espace de moulage, ces butées étant réparties longitudinalement par rapport aux zones marginales, de manière à être subordonnées verticalement aux ergots (42) et avec lesquelles peuvent coopérer des évidements (45) se trouvant dans la zone inférieure de la face frontale des parties inférieures (27) des arrêts transversaux (7).
21. Instrument selon l'une des revendications 11, 12 et 14 à 20, caractérisé par le fait que sur les parties inférieures (27) des arrêts transversaux (7) sont réalisés, respectivement dans la zone entre deux évidements (34) directement adjacents, ou entre deux rainures borgnes à embouchures (35). des projections (46) faisant saillie au-dessus de la surface de la partie inférieure (27) ces projections venant s'insérer, à la manière de languettes dans des rainures (47) prévues en des endroits qui correspondent respectivement sur les côtés inférieurs des parties supérieures (28) des arrêts transversaux (7).
22. Instrument selon l'une des revendications 10 à 21, caractérisé par le fait que des douilles (48) pour la réception des corps de moulage (5) sont montées dans les sections (3l'), respectivement plus grandes, des orifices (29') prévus dans les parties supérieures (28) des arrêts transversaux (27), ces douilles venant s'insérer dans des sections (30'), respectivement plus grandes, prévues dans les parties inférieures (27) des arrêts transversaux (7).
23. Instrument selon la revendication 22. caractérisé par le fait que, au moins dans l'un des arrêts transversaux (7) délimitant l'espace de moulage (10) en direction longitudinale, sont montées des douilles (48) comportant des ergots (49) dirigés vers le fond de l'espace de moulage (10) et atteignant celui-ci, ces ergots venant s'insérer dans les rainures (50) dimensionnées de manière adéquate et creusées en des endroits correspondants entre eux dans les parties inférieures (27).
24. Instrument selon l'une des revendications 1 à 23, caractérisé par le fait que dans les amorces (19) des parois latérales de la palette (8) sont réalisées, pour la réception de fers d'armature, des fentes ouvertes réparties longitudinalement par rapport à l'espace de moulage (10), qui s'étendent transversalement à cette direction longitudinale et sensiblement parallèlement au fond (9) de l'espace de moulage, leur ouverture étant opposée audit fond (9), dont la profondeur, vue en direction du fond de l'espace de moulage, est dimensionnée de telle sorte que l'espace restant libre au-dessus d'un fer d'armature placé au fond de chaque fente (51) se trouve recouvert par les rails de guidage (18) des corps de paroi (6).
25. Procédé pour la fabrication de pièces en béton préfabriquées en forme de dalles relativement grandes, en particulier pour des planchers préfabriqués réalisés sous la forme de ce que l'on appelle des planchers creux en béton, avec utilisation d'un instrument de fabrication selon l'une des revendications 9 à 24, ce procédé prévoyant une multitude de palettes (8) ne comportant pas de pièces mécaniquement mobiles et soumises à un instrument de fabrication, lesdites palettes étant amenées les unes après les autres, chargées d'une ou de plusieurs pièces préfabriquées fraîchement moulées et dégagées après extraction des corps de moulage (5) et des corps de parois (6), ainsi que soulèvement du cadre de moulage (3'), sont conduites dudit instrument de fabrication à une station de séchage dans laquelle lesdites palettes (8) sont disposées - de préférence sur des plans différents -, station de séchage d'où elles sont prélevées après le durcissement requis du béton pour être conduites vers une station de déchargement dans laquelle les parties préfabriquées sont séparées des palettes (8), lesquelles sont ensuite nettoyées et conduites vers une station de ferraillage dans laquelle les fers d'armature requis sont placés dans les parties inférieures (27) des arrêts transversaux (7), lesdites parties (27) étant déjà présentes sur la palette (8) ou devant y être disposées, le cas échéant, d'une manière différente. à la suite de quoi. chaque palette (8) ainsi prééquipée est munie des parties supérieures (28) des arrêts transversaux (7) et le cas échéant des arrêts longitudinaux, et réceptionnée à l'intérieur du cadre (3') après l'abaissement de celui-ci, puis les corps de moulage (5) et les corps de parois (6) sont introduits. le remplissage de l'espace de moulage (10') par du béton suit cette opération après la première solidification duquel s'effectue la libération des parties préfabriquées moulées ainsi sur la palette (8) par l'extraction des corps de moulage (8) et des corps de paroi (6) et par le soulèvement - consécutif du cadre (3'), la palette étant ensuite prélevée de l'instrument de fabrication et conduite vers la station de séchage et ainsi de suite.
26. Procédé selon la revendication 25, caractérisé par le fait que la palette équipée du ferraillage est conduite vers l'instrument de fabrication avant que les pièces supérieures des arrêts transversaux soient montées, ce qui s'effectue le cas échéant simultanément à l'abaissement du cadre.
27. Pièce préfabriquée en béton en forme de dalle, en particulier destinée aux planchers préfabriqués ayant la forme de ce que l'on appelle des planchers creux en béton, comportant une multitude d'espaces creux de forme cylindrique, s'étendant parallèlement et comportant des parois latérales (52) sur les côtés longitudinaux, lesquels présentent respectivement une découpe transversale (53) s'étendant entre une section supérieure et une section inférieure de la paroi latérale, fabriquée selon l'une des revendications 4 à 26 et caractérisée par le fait que, sur les parois latérales (52) sont prévus des fers d'armature (54) émergeant sous les découpes (53).
EP84110970A 1983-09-13 1984-09-13 Coffrage à éléments mobiles pour pièces préfabriquées en béton Expired EP0139215B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110970T ATE31157T1 (de) 1983-09-13 1984-09-13 Schalung mit beweglichen teilen fuer betonfertigteile.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3332981 1983-09-13
DE19833332981 DE3332981A1 (de) 1983-09-13 1983-09-13 Herstellungsgeraet fuer die fertigung verhaeltnismaessig grosser plattenfoermiger beton-fertigteile

Publications (2)

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EP0139215A1 EP0139215A1 (fr) 1985-05-02
EP0139215B1 true EP0139215B1 (fr) 1987-12-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110970A Expired EP0139215B1 (fr) 1983-09-13 1984-09-13 Coffrage à éléments mobiles pour pièces préfabriquées en béton

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Country Link
EP (1) EP0139215B1 (fr)
AT (1) ATE31157T1 (fr)
DE (2) DE3332981A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649638B2 (fr) * 1989-03-01 1991-12-06 Bulte Jacques Chaine de production automatique de poutres coffrantes en beton arme pour planchers-dalles
DE4445673A1 (de) * 1994-12-21 1996-06-27 Marianne Merk Platte und Verfahren zur Herstellung der Platte
DE19504235A1 (de) * 1995-02-09 1996-08-14 Ipa Isorast Int Verfahren zur Herstellung von wärmeisolierten Tafeln für die Großtafelbauweise
CN114654570B (zh) * 2022-02-23 2024-07-23 山东中成新型建材有限公司 一种可辅助加速凝固的混凝土预制件生产模具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038871A1 (de) * 1980-10-15 1982-05-27 Hans Veit 8602 Schlüsselfeld Dennert Formmaschine fuer betonfertigplatten
DE3203158A1 (de) * 1981-02-02 1982-12-02 Ebenseer Betonwerke GmbH, 1010 Wien Schalungsform fuer grossflaechige betonfertigteile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE398839B (sv) * 1975-11-07 1978-01-23 A Betong Ab Sett och anleggning for etappvis gjutning av med atminstone tva lengsgaende halrum forsedda betongelement
BE885864Q (fr) * 1976-04-27 1981-02-16 Kraemer Betonwerk Alois Forme de betonnage pour la fabrication de poutres de plafond en beton
DE2832295C3 (de) * 1978-07-22 1982-08-19 Hans Veit 8602 Schlüsselfeld Dennert Formtisch für Betonfertigplatten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038871A1 (de) * 1980-10-15 1982-05-27 Hans Veit 8602 Schlüsselfeld Dennert Formmaschine fuer betonfertigplatten
DE3203158A1 (de) * 1981-02-02 1982-12-02 Ebenseer Betonwerke GmbH, 1010 Wien Schalungsform fuer grossflaechige betonfertigteile

Also Published As

Publication number Publication date
DE3467865D1 (en) 1988-01-14
DE3332981A1 (de) 1985-04-04
EP0139215A1 (fr) 1985-05-02
DE3332981C2 (fr) 1987-07-23
ATE31157T1 (de) 1987-12-15

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