EP0480092A1 - Dispositif de raccord pour cadres de coffrages pour béton - Google Patents

Dispositif de raccord pour cadres de coffrages pour béton Download PDF

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Publication number
EP0480092A1
EP0480092A1 EP90119566A EP90119566A EP0480092A1 EP 0480092 A1 EP0480092 A1 EP 0480092A1 EP 90119566 A EP90119566 A EP 90119566A EP 90119566 A EP90119566 A EP 90119566A EP 0480092 A1 EP0480092 A1 EP 0480092A1
Authority
EP
European Patent Office
Prior art keywords
wedge
connecting rod
locks
wedge locks
connecting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90119566A
Other languages
German (de)
English (en)
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.)
THRESPAL Ltd
Original Assignee
THRESPAL Ltd
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 THRESPAL Ltd filed Critical THRESPAL Ltd
Priority to EP90119566A priority Critical patent/EP0480092A1/fr
Publication of EP0480092A1 publication Critical patent/EP0480092A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
    • E04G17/045—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by wedge-shaped elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • E04G11/087—Fill-in form panels in the plane of two adjacent forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/023—Forming boards or similar elements with edge protection
    • E04G2009/025—Forming boards or similar elements with edge protection by a flange of the board's frame

Definitions

  • the invention has for its object to provide a connecting device for frame formwork, which is more convenient to handle on site.
  • the connecting device is characterized in that the connecting rod has locking areas to limit the longitudinal displaceability outwards of the two wedge locks and the wedge locks have locking areas to limit their movement in the direction away from the contact side of the connecting rod, so that the wedge locks are captive with the Connecting rod.
  • the formwork technician at the construction site only has to take one continuous connection structure for each frame formwork connection, which jointly contains the connecting rod and the two wedge locks.
  • a first possibility is to generate the wedge effect on the contact surface of the relevant wedge lock on the connecting rod, namely by means of a wedge surface on the connecting rod and / or a wedge surface on the relevant wedge lock.
  • a second possibility is to generate the wedge effect between the rear gripping surface of the wedge lock in question and the associated abutment of the metal profile in question, namely by wedge-like design of the rear gripping surface and / or by wedge-like design of the abutment.
  • it is preferred to generate the wedge effect by wedge-like design of the rear engagement surface of the wedge lock in question preferably by means of slots in the jaws of the wedge locks which run at a wedge angle relative to the wedge lock contact surface.
  • a particularly simple and preferred possibility for creating the blocking areas of the connecting rod are bolts, screws, rivets or the like which project on one or both sides and which are provided on the connecting rod transversely to the longitudinal extent thereof.
  • a particularly preferred possibility for creating the blocking areas of the wedge locks are projections which protrude from the side into at least one longitudinal outer recess of the connecting rod.
  • the wedge locks consist at least largely of stamped, bent sheet metal.
  • the blocking areas of the wedge locks can be formed particularly easily by bent sheet metal areas.
  • the wedge locks are preferably substantially U-shaped in cross-section with two substantially flat jaws.
  • the wedge locks each consist essentially of a continuous, appropriately bent sheet or essentially of two sheets of L-shaped cross section, which are connected to one another via at least one welded-on connecting crosspiece.
  • a particularly simple, preferred possibility for creating the abutment on the relevant metal profile of a frame formwork consists in a bolt in a transverse bore in the metal profile before the connecting device is attached use zen. It is favorable to captively fasten such a bolt to each wedge lock by means of a connecting strand so that it is at hand when the connecting device is attached. When the connecting device is removed later, the bolts are removed again.
  • the invention further relates to a concrete formwork comprising a plurality of frame formworks connected to one another by means of connecting devices, characterized in that connecting devices are provided which are designed in accordance with the disclosure in the present application.
  • the concrete formwork 2 shown in detail in FIG. 1 essentially consists of a plurality of concrete frame formwork 4 (only two of which are shown in detail in FIG. 1), which are connected by means of connecting devices 6 (one of which is shown in FIG. 1) are.
  • Each frame formwork 4 consists essentially of a formwork panel 8, on the back of the formwork panel 8 provided along the formwork edge 10 and other metal profiles 11, which are welded as so-called crossbars between the vertical edge metal profiles 10.
  • the frame formwork 4 are rectangular.
  • the metal profiles 10 and 11, which form a frame overall, give the frame formwork 4 the required strength.
  • the connecting device 6 shown consists essentially of a connecting rod 12 and two identical but mirror-image arranged wedge locks 14.
  • the connecting rod 12 is attached to the rear sides of two metal profiles 11, which are aligned with one another, of the two frame formwork 4 to be connected, with a contact side 16.
  • the two wedge locks 14 firmly clamp the two frame formwork to be connected and the connecting rod 12, as will be described in more detail below. In the clamped state, the front surfaces of the two formwork panels 8 are aligned with one another.
  • the embodiment according to FIG. 2 differs from the embodiment according to FIG. 1 only in that the connecting rod 12 has a panel spacer 18 attached to it in its central region.
  • the formwork intermediate piece 18 is fastened to the connecting rod 12 in such a way that its front surface is aligned with the front surfaces of the two adjoining formwork panels 4.
  • the connection device 6 not only creates a connection between the two adjacent frame formwork 4, but also bridges a gap between these frame formwork 4 by the intermediate piece 18.
  • a wedge lock 14 is shown on a larger scale.
  • the wedge lock 14 is essentially U-shaped in cross section (FIG. 4) with two jaws 20 and a cross-connecting area 22 of the two jaws 20.
  • the wedge lock 14 consists of a continuous, strong sheet metal bent into the U-shape. With its U-shape, the wedge lock engages around the connecting rod 12 on the sides, which is not the contact side 16 of the connecting rod 12.
  • the two jaws 20 protrude further forward and grip the metal profile 11, which is a rectangular hollow profile, on both sides.
  • each jaw 20 of the wedge lock 14 is one Both ends closed slot 24 is provided, which extends at an angle of 5 to 15 degrees relative to the contact surface between the cross-connection area 22 of the wedge lock 14 and the rear surface of the connecting rod 12.
  • the two slots 24 of the wedge lock 14 are aligned with one another.
  • a bolt 28 is inserted, which has an enlarged head on one side and can be secured on the other side of the metal profile 11 and the wedge lock 14 by means of a pin, not shown, inserted through a bolt transverse bore 30.
  • the bolt 28 is captively attached to the wedge lock 14 by means of a flexible connecting strand 32, for example made of plastic, so that it is captively connected to the connecting device 6 when it is pulled out of the bore 26.
  • the cross-connection area 22 of the wedge lock 14 is bent inwards at right angles at the left end in FIG. 3 and at the right end in FIG. 4.
  • the end faces 34 of these two bending areas 36 together form a contact surface with which the wedge lock 14 bears against the rear of the connecting rod 12.
  • the slot boundary surfaces 38 of the two slots 24, which are more distant from the connecting rod 12, together form a rear engagement surface of the wedge lock 14, which interact with the described bolt 28 as an abutment.
  • the connecting rod 12 has a double-T-shaped cross section and consists of two U-profiles made of strong, bent sheet metal, the back to back and joined together. In this way, two outer, longitudinally extending depressions 40 of the connecting rod 12 are formed which, in the view of FIGS. 1, 2, 3, point towards the drawing viewer and away from the drawing viewer.
  • the two jaws 20 each have a bending area 42 where they are located opposite the two longitudinally extending depressions 40 of the connecting rod 12. In total there are four such turning areas 42. These protrude a bit into the respective adjacent recess 40 with play. If the bolt 28 is pulled out of the metal profile 12 during the disassembly of the concrete formwork 2, the wedge lock 14 cannot move substantially in the direction transverse to the longitudinal extension of the connecting rod 12 and in the direction away from the contact side 16 of the connecting rod 12 because of the bending regions 42. In this way, the turning areas 42 form blocking areas of the wedge lock 14 which, in cooperation with the recesses 40, limit the relative movements of the wedge lock 14 referred to relative to the connecting rod 12.
  • Fig. 1 and 2 can also be seen bolts 44 which are inserted in the two end regions of the connecting rod 12 through holes in the connecting rod 12 and welded there. 1 and 2 and are so long that the outer bending areas 42 of the two wedge locks 14 come against the bolts 44 when the wedge locks 14 are moved towards the ends of the connecting rod 12.
  • the bolts 44 thus represent locking areas of the connecting rod 12 against longitudinal movements of the wedge locks 14 along the connecting rod 12 too far outward. In this way, the connecting rod 12, the two wedge locks 14 and the two bolts 28 form a coherent structure, which is the connecting device 6 .
  • the connecting rod 12 is placed with its contact side 16 against the rear sides of two aligned metal profiles 11 of the two frame formworks 4 to be connected to one another.
  • the two wedge locks 14 are moved so far along the connecting rod 12 that the two bores 26 are visible through the slots 24.
  • each bolt 28 is inserted and secured through the two slots 24 of the associated wedge lock 14 and through the bore 26 there.
  • the two wedge locks are driven towards each other with hammer blows against the turning areas 36.
  • the pressing surfaces 34 press the connecting rod 12 against the two metal profiles 11.
  • the two wedge locks 14 are driven in opposite directions by means of hammer blows. Then the bolts 28 are pulled out.
  • the connecting devices according to FIGS. 5 and 6 differ from the connecting devices according to FIGS. 1 and 2 only in that the wedge locks are designed differently. The other design of the wedge locks is then described in more detail with reference to FIGS. 7 and 8.
  • the wedge lock 14 according to FIGS. 7 and 8 is also substantially U-shaped in cross section (FIG. 8) and differs from the wedge lock according to FIGS. 3 and 4 only in the design of the areas which are in engagement with the connecting rod 12.
  • the wedge lock 14 is not made from a continuous, U-shaped bent sheet, but from two identical, L-shaped, strong sheets, the end face abut along the longitudinal direction of the connecting rod 12.
  • two connecting crosspieces are welded onto the side facing away from the formwork plate 8. 7 have a cross-sectional shape in the form of a triangle or a trapezoid created by cutting off the triangular tip, the triangular tip or the shorter trapezoidal base side being further away from the formwork panel 8.
  • the hammer blows used to clamp or loosen the wedge lock 14 can be conveniently guided against the crosspieces 50.
  • the wedge lock 14 has no turning areas 36 as the wedge lock 14 according to FIGS. 3 and 4 had, so that the L-bends directly form the contact surface to the connecting rod 12.
  • a sheet metal bracket 52 is bent in a U-shape in the middle of the wedge lock 14 and back in the direction of the formwork plate 8. These sheet metal tabs 52 engage in the relevant, longitudinal recess 40 of the connecting rod 12 and extend to close to the central web.
  • the bolts 44 described on the basis of the previous exemplary embodiments interact with the end regions of the sheet metal tabs 52.
  • the connecting rod does not necessarily have to have a double-T-shaped cross section, but can also have, for example, a rectangular hollow cross section with longitudinal recesses on both sides. It is also possible, for example, to design the connecting rod 12 to be somewhat wider than the metal profile 11 and to allow the blocking areas of the wedge locks to grip behind the lateral projections of the connecting rod 12 thus created, in order to limit their movement in the direction away from the contact side of the connecting rod 12.
  • the wedge lock can not only be used for the aligned connection of two frame formwork adjacent in the horizontal direction, but - with a pair of frame formwork rotated by 90 ° as well - can also be used for the aligned connection of two vertically adjacent frame formwork.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP90119566A 1990-10-12 1990-10-12 Dispositif de raccord pour cadres de coffrages pour béton Withdrawn EP0480092A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90119566A EP0480092A1 (fr) 1990-10-12 1990-10-12 Dispositif de raccord pour cadres de coffrages pour béton

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90119566A EP0480092A1 (fr) 1990-10-12 1990-10-12 Dispositif de raccord pour cadres de coffrages pour béton

Publications (1)

Publication Number Publication Date
EP0480092A1 true EP0480092A1 (fr) 1992-04-15

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ID=8204607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119566A Withdrawn EP0480092A1 (fr) 1990-10-12 1990-10-12 Dispositif de raccord pour cadres de coffrages pour béton

Country Status (1)

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EP (1) EP0480092A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008110A1 (fr) * 1992-09-25 1994-04-14 Sandwith Stanley R Systeme ajustable de coffrage pour du beton
FR2969195A1 (fr) * 2010-12-20 2012-06-22 Outinord St Amand Rapprochement et affleurement de deux coffrages pour le batiment.
US20180266126A1 (en) * 2015-09-30 2018-09-20 Form 700 Pty Ltd Formwork panel assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH530536A (de) * 1971-02-19 1972-11-15 Molfenter Kg Klemmschloss zum Verbinden von Schaltafeln
EP0002814A1 (fr) * 1977-12-22 1979-07-11 Emil Steidle GmbH. & Co. Coffrage pour béton formé de panneaux assemblés par clavettage
DE8622358U1 (de) * 1986-08-21 1987-12-17 Emil Steidle Gmbh & Co, 7480 Sigmaringen Vorrichtung zum Verbinden zweier Schalungselemente
EP0304950A2 (fr) * 1987-08-26 1989-03-01 Niels Dipl.-Ing. Hollmann Clef de raccord pour cadres de coffrages
DE3801539A1 (de) * 1988-01-20 1989-07-27 Hollmann Niels Keilschloss

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH530536A (de) * 1971-02-19 1972-11-15 Molfenter Kg Klemmschloss zum Verbinden von Schaltafeln
EP0002814A1 (fr) * 1977-12-22 1979-07-11 Emil Steidle GmbH. & Co. Coffrage pour béton formé de panneaux assemblés par clavettage
DE8622358U1 (de) * 1986-08-21 1987-12-17 Emil Steidle Gmbh & Co, 7480 Sigmaringen Vorrichtung zum Verbinden zweier Schalungselemente
EP0304950A2 (fr) * 1987-08-26 1989-03-01 Niels Dipl.-Ing. Hollmann Clef de raccord pour cadres de coffrages
DE3801539A1 (de) * 1988-01-20 1989-07-27 Hollmann Niels Keilschloss

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008110A1 (fr) * 1992-09-25 1994-04-14 Sandwith Stanley R Systeme ajustable de coffrage pour du beton
FR2969195A1 (fr) * 2010-12-20 2012-06-22 Outinord St Amand Rapprochement et affleurement de deux coffrages pour le batiment.
US20180266126A1 (en) * 2015-09-30 2018-09-20 Form 700 Pty Ltd Formwork panel assembly
US10584501B2 (en) * 2015-09-30 2020-03-10 Form 700 Pty Ltd Formwork panel assembly with releasable connecting member and method of removing the formwork

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