EP3211155A1 - Corner connection device for concrete formworks - Google Patents

Abstract

Corner connecting device (1) of a concrete wall formwork with two shuttering elements (2, 3) which can be connected to one another by means of the corner connection device (1) in an arrangement forming a formwork outer corner (40), characterized, in that the corner connection device (1) has at least one angled anchor (4) with an anchor base (5) and with two anchor legs (6, 7) extending in particular at right angles from the anchor base (5), each one of the two formwork elements (2, 3). assigned, a slider (17, 18) is movably mounted on each anchor leg (6, 7) and is adjustable along the armature leg (6, 7), in that each slider (17, 18) has an engagement element (26) which is designed to engage on an associated engagement receptacle (37) on the respective formwork element (2, 3), and that each slide (17, 18) along the associated anchor legs (6, 7) can be fixed in clamping positions.

Description

The invention relates to a corner connecting device of a concrete wall formwork with two formwork elements, which are connected to each other by means of the corner joint device in a formwork outer corner forming arrangement, and a corner assembly of formwork elements of a concrete wall formwork according to the preamble of claim. 8

From the DE 20 2006 013 331 U1 is a Eckverbindungsvorrichtung for two outer corner forming outer formwork panels of a Schaltafeleckanordnung each having an outer and an inner formwork panel, which are mutually parallel and spaced apart, known. The Eckverbindungsvorrichtung comprises two tie bolts, which are connected to each other by means of a cross sleeve and are each connected by a cross sleeve with a clamping bolt which connects the outer panel to the inner panel directly adjacent to the inner corner formed by the two inner formwork panels and at a distance holds.

The object of the invention is to provide a Eckverbindungsvorrichtung mentioned above, which is improved over the known device in terms of their functionality and is easier to assemble, and a corner assembly of formwork elements with an improved corner joint device.

These objects are achieved by a Eckverbindungsvorrichtung with the features of claim 1 and by a corner arrangement of formwork elements with the features of claim 8.

Advantageous embodiments of the invention are specified in the dependent claims.

Characterized in that the corner connecting device comprises an angle armature with an anchor base and with two of the anchor base in particular at right angles extending armature legs, each associated with one of the two formwork elements, wherein at each anchor leg a slider movably mounted and adjustable along the armature leg, each slide an engagement member which is formed for engagement with an associated engagement receptacle on the respective shuttering element, and each slide along the associated armature leg in clamping positions can be fixed, the two formwork elements can be firmly connected to each other on the outside or at their common outer corner in a simple manner, wherein otherwise required clamping bolt or formwork anchors that connect the mutually associated inner and outer formwork elements together, can be dispensed with in the corner.

Such a formwork element with receiving openings for clamping bolts or formwork anchors is basically z. B. from the EP 1 541 781 A1 and the DE 10 2014 012 037 A1 known. Such on the formwork element already existing receiving openings are particularly suitable as engagement receptacles for the engagement elements.

The angle armature and the slide are preferably parts made of steel or steel sheet, the individual parts are in particular welded or screwed together or are connected to each other via bolted connections, or they are made of cast steel.

Conveniently, each slide is guided exclusively linearly displaceable at its anchor legs. As a result, a secure power transmission is ensured with high stability, since a rotation of the slider is excluded.

In a particularly preferred embodiment, it is provided that a threaded rod is arranged on the armature arm in the direction of displacement of the slide on which a clamping unit or a nut for bracing the slider is engaged. The threaded rod is z. B. formed by a so-called DYWIDAG rod, but may also have another thread that is suitable for screwing or clamping a nut or a clamping unit. Such a threaded rod, which expediently in a hollow interior of z. B. made of a tube anchor leg is firmly attached and protrudes through the open end, basically represents a tension rod and has a large clamping range over its length. Thus, the angle armature is adjustable over a large area and suitable for formwork elements with different positions of the engagement shots or receiving openings from the corner edge of the formwork element.

Instead of the threaded rod attached to or in the anchor leg, a nut may also be attached to the respective armature leg, to which a tensioning unit or a threaded rod, for B. by means of a screw head is screwed, for clamping the slider is engaged.

Conveniently, the slider includes an end wall having an opening through which the threaded rod extends and on which the clamping unit or the nut is in clamping engagement. The end wall is used in particular for the installation of the clamping unit or the mother and it leads through the opening extending threaded rod even with high force centrally on the armature leg, when the opening has a slightly larger diameter as the threaded rod. The slide can also be formed without end wall, in which case the nut is supported on the outer walls of the slide.

When the nut is fixedly secured to the anchor leg, the threaded rod may alternatively extend through the aperture for engagement with the nut of the anchor leg and the screw head may be in clamping engagement with the end wall.

If, in a preferred embodiment, an inwardly projecting positioning part is arranged in the inner corner of the anchor base of the angle anchor, this can serve for centering the formwork elements on the outer side of the formwork and for force transmission and force diversion with an associated special outer corner design of the formwork elements.

Conveniently, the engagement element is a spigot or pin-shaped protruding from the slider and in particular cylindrical or conical shaped part. However, other engaging elements such. As hooks or angle strips or the like. So z. B. two hooks engage in associated openings of the formwork elements, z. B. in openings on the support structure of the formwork elements.

Furthermore, a reinforcing plate may be provided, which engages around the anchor base on the outside and is firmly connected to the anchor legs. As a result, the strength of the angle anchor can be increased in particular at the bending-critical anchor base, wherein otherwise the component wall thickness can be reduced to save weight. As a reinforcing plate, each of the anchor base z. B. outside embracing reinforcement part.

On the other hand, at least one reinforcing plate can be fastened flat on the anchor legs or on tube walls of the two anchor legs. In particular, two reinforcing plates are arranged on opposite outer sides of the armature legs or tube walls and, for example, welded thereto.

A corner arrangement according to the invention of formwork elements of a concrete wall formwork, which are arranged at an angle to each other forming an outer corner and can be braced by means of a Eckverbindungsvorrichtung arranged on the outer formwork elements outside, is formed according to one of claims 1 to 7 or according to the above. The corner connection device has at least one angle anchor, but expediently comprises two or more angle anchors, which are arranged one above the other at the outer corner, depending on the height of the erected formwork elements.

Conveniently, a corner strip on the front sides of the formwork elements is arranged on the outer corner, on which one or the positioning part of the angle armature is in the retaining engagement. The corner strip ensures a uniform rectangular alignment and installation of the two formwork elements to each other. The corner strip can rest against the two end faces of the formwork elements without attachment or it is firmly connected by formwork locks or brackets or the like with the formwork elements adjoining on both sides. The corner strip may have attachment strips or the like positioning aids that support correct positioning on the formwork elements. On a corner bar can also be omitted if z. B. the two formwork elements are arranged overlapping by the one formwork element is arranged on the edge side on the front side of the other formwork element.

The engagement seats or receiving openings for the engagement elements of the slides may in particular contain cylindrical or conical inserts or sleeves, which are adapted to the respective engagement elements. With the inserts or sleeves, which may be formed in different shapes, the engagement receptacles or receiving openings can be adapted to respective engagement elements. In principle, however, any type of force-transmitting engagement recordings are usable.

Expediently, the engagement receptacles or receiving openings are formed on a support structure of the formwork element and in particular on a cross member of the support structure. Such a cross member is designed in particular for receiving high forces. These engagement receptacles or receiving openings may otherwise be provided for receiving anchor rods having anchor devices, which connect load-bearing with each other opposite formwork elements of a concrete wall formwork. These engagement receptacles or receiving openings thus have a dual function, so that no additional engagement receptacles or receiving openings need only be provided for the corner joints.

According to a particularly preferred embodiment, it is provided that each of the two outer formwork elements, at least in the region of the angle armature, is free of an anchoring connection having an anchoring device with a respective associated inner formwork element or a formwork inner corner element connecting the inner formwork elements. The angle anchor absorbs the pressure forces of filled liquid concrete acting on the outer formwork elements and initiates the compressive forces as tensile forces in the outer formwork elements and adjoining further formwork elements, so that no anchor connection between the outer and inner formwork elements is required at least in the immediate area of the angle anchor is. Thus, the assembly is facilitated due to the omitted anchor connections and therefore there are no openings in the finished concrete wall, which otherwise remain when removing the concrete wall formwork and the anchor joints or tie rods.

Expediently, the region without anchor connection on the two outer formwork elements extends over 1 to 3 times the length of the anchor legs of the angle anchor. In this area, a secure support and power transmission is ensured in the adjacent formwork elements.

When the width of at least one of the two outer formwork elements and the length of the associated anchor leg of the angle anchor substantially to each other are adapted or match, it can be dispensed with this formwork element entirely on an anchor connection with the opposite inner formwork or the opposite formwork element. This formwork element is connected in the usual way with brackets or Schalschlössern with an adjacent formwork element. The adaptability and the adjustment of the slides must be considered and used.

The two outer formwork elements may be formed as comparatively narrow and lightweight components, for. B. using a support structure which is made essentially of light metal. Due to the lower weight, the installation of the concrete wall formwork on the formwork outer corner is facilitated. However, even large or wide formwork elements can be connected to each other with the corner joint device according to the invention.

Fig. 1

in isometrischer Ansicht zwei Schalungselemente einer Betonwandschalung, die rechtwinklig aneinander angrenzen, und eine Eckverbindungsvorrichtung, die an der Außenecke zum Verbinden der beiden Schalungselemente vorgesehen ist;

Fig. 2

in isometrischer Ansicht gemäß Fig. 1 die beiden Schalungselemente mit der in Spannstellung angebrachten Eckverbindungsvorrichtung;

Fig. 3

in isometrischer Ansicht die Eckverbindungsvorrichtung in Explosionsdarstellung;

Fig. 4

in isometrischer Ansicht gemäß Fig. 3 die Eckverbindungsvorrichtung in Spannstellung gemäß Fig. 3;

Fig. 5

in einer weiteren isometrischen Ansicht die Eckverbindungsvorrichtung in Explosionsdarstellung gemäß Fig. 3;

Fig. 6

in einer weiteren isometrischen Ansicht die Eckverbindungsvorrichtung in Spannstellung gemäß Fig. 4;

Fig. 7

in einer isometrischen Ansicht gemäß Fig. 1 die beiden Schalungselemente vor dem Anbringen einer Eckleiste und der Eckverbindungsvorrichtung;

Fig. 8

in einer horizontalen Querschnittsansicht in schematischer Darstellung eine Eckverbindungsvorrichtung an einer Betonwandschalung;

Fig. 9

in einer isometrischen Ansicht ein weiteres Ausführungsbeispiel der Eckverbindungsvorrichtung in Explosionsdarstellung gemäß Fig. 5;

Fig. 10

in einer isometrischen Ansicht ein Rohr zur Herstellung eines Winkelankers der Eckverbindungsvorrichtung der Fig. 9; und

Fig. 11

in einer isometrischen Ansicht den Winkelanker der Eckverbindungsvorrichtung der Fig. 9.

Hereinafter, an embodiment of the corner joint device according to the invention and a corner arrangement according to the invention of formwork elements will be explained in more detail with reference to the drawing. It shows:

Fig. 1

in isometric view, two formwork elements of a concrete wall formwork, which adjoin one another at right angles, and a corner connection device, which is provided at the outer corner for connecting the two formwork elements;

Fig. 2

in isometric view according to Fig. 1 the two formwork elements with the attached in tension position corner joint device;

Fig. 3

in an isometric view of the corner joint device in exploded view;

Fig. 4

in isometric view according to Fig. 3 the corner joint device in clamping position according to Fig. 3 ;

Fig. 5

in a further isometric view of the corner joint device in exploded view according to Fig. 3 ;

Fig. 6

in a further isometric view of the corner connecting device in clamping position according to Fig. 4 ;

Fig. 7

in an isometric view according to Fig. 1 the two formwork elements before attaching a corner strip and the corner joint device;

Fig. 8

in a horizontal cross-sectional view in a schematic representation of a Eckverbindungsvorrichtung to a concrete wall formwork;

Fig. 9

in an isometric view of another embodiment of the corner joint device in exploded view according to Fig. 5 ;

Fig. 10

in an isometric view of a tube for producing an angle armature of the Eckverbindungsvorrichtung the Fig. 9 ; and

Fig. 11

in an isometric view of the angle armature of the Eckverbindungsvorrichtung the Fig. 9 ,

A corner connecting device 1 for connecting two formwork elements 2, 3 of a concrete wall formwork (see Fig. 1 . 2 and 8th ), which are arranged to form an outer corner as outer formwork elements at right angles to each other, has at least one angle anchor 4 with a central anchor base 5 and two anchor legs 6 and 7, extending from the anchor base 5, starting at an angle of 90 ° in a plane , Each anchor leg 6, 7 preferably has a rectangular cross section and is in particular made of a tube with a rectangular cross section. The two anchor legs 6, 7 are beveled, for example, at the anchor base 5 each at a 45 ° angle and z. B. firmly connected by welding. An optional reinforcing plate 8 (in Fig. 8 not shown), which has a rectangular inner contour is welded to the narrow outer surfaces 9 of the two armature legs 6, 7 and increases the strength of the angle armature 4 against deformation of the two armature legs 6, 7 and the strength of the connection of the two anchor legs 6, 7. Both the armature legs 6, 7 as well the reinforcing plate 8 are preferably made of steel. The reinforcing plate 8 may have in its central wide portion 10 openings 11 which reduce the weight of the reinforcing plate 8, but not or only slightly reduce the strength of the reinforcing plate 8. At the outer corner 12 of the anchor base 5 opposite inner corner 13, a flat positioning member 14 to the narrow inner walls or inner surfaces 15 of the two armature legs 6, 7 is welded. The positioning member 14 has a square shape in plan view and expediently a rounded or beveled inner corner 16.

Each armature leg 6, 7 carries a slide 17 and 18, which is slidably mounted on the respective armature leg 6, 7. Each slide 17 and 18 is formed as a rectangular tubular hollow part with four walls 19, which form such an inner cross-section that the slider 17 and 18 on the anchor legs 6, 7 with little play or largely free of play can slide. Due to the rectangular cross-section of the slider 17, 18 on the anchor legs 6, 7 arranged non-rotatably. The slider 17, 18 has an outer end wall 20 with a central opening 21, which is provided for the passage of a threaded rod 22 which is fixed in the interior of each anchor arm 6, 7, centrally in this extends and from an end opening 23 of the armature leg. 6 Protrudes, wherein the threaded rod 22 protrudes in particular with such a length of the armature leg 6, 7, which corresponds approximately to the length of the slider 17, 18. A nut 24 can be screwed into engagement with a screw thread 25 of the threaded rod 22 on this. When the slide 17, 18 is attached to the anchor legs 6, 7 and the threaded rod 22 extends through the opening 21 in the end wall 20 ( Fig. 4 and 6 ), can be adjusted and limited by the position of the nut 24 on the threaded rod 22, the maximum extension position of the slide 17, 18 on the armature arm 6, 7.

The slider 17, 18 has an engagement member 26, the z. B. is formed as a cylindrical or slightly conical pin, on the narrow inner wall 27 of the slider 17, 18 is fixedly mounted and projecting inwardly.

The two shuttering elements 2, 3 of a concrete wall formwork to be connected to the corner connecting device 1 are arranged at right angles to each other ( Fig. 1 . 2 and 8th ) that their formwork panels 28 and 29, which form a concrete wall facing inner surfaces of the formwork elements 2, 3, are arranged in an inner corner edge adjacent to each other. At the outer corner of the two formwork elements 2, 3 is between the two mutually perpendicular end faces 30 and 31 ( Fig. 7 ) of the two frame parts 32 and 33 of the formwork elements 2, 3, a corner strip 34 is used, which has an outwardly open 90 ° Eckaussparung 35. Each formwork element 2, 3 has over its height a plurality of transverse bars 36 (in the Fig. 1 . 2 and 7 in each case only a lower cross member 36 is shown), which has a receiving opening 37 which is provided for receiving the engagement member 26 of the corner joint device 1 and adapted to the engagement member 26.

For firmly connecting the two shuttering elements 2, 3, each angle armature 4 of the corner connecting device 1 in horizontal alignment at the height of the two transverse beams 36 to the two formwork panels 2, 3 so approximated ( Fig. 1 ), that the positioning part 14 is positioned in front of the 90 ° corner recess 35 of the corner strip 34. The slides 17, 18 are respectively moved on the two armature legs 6, 7 in such a position that they are arranged with their engagement members 26 in front of the receiving openings 37 in the transverse bars 36. The angle armature 4 is moved against the two formwork elements 2, 3, wherein the engagement elements 26 are inserted into the receiving openings 37 and the two slides 17, 18 thereby adjust by moving along the respective armature leg 6, 7 in position ( Fig. 2 ). The positioning member 14 is now taken centered in the 90 ° -Eckaussparung 35 of the corner strip 34. The two nuts 24 are screwed onto the threaded rods 22 against the slides 17, 18 and tightened in abutment against the two end walls 20 substantially uniformly, so that the slide 17, 18 in the receiving openings 37 received engagement elements 26 on the cross beams in the direction of the corner strip 34 tension and thus connect the two formwork elements 2, 3 firmly together in their corner position. By the engagement of the positioning member 14 in the 90 ° corner recess 35 of the corner strip 34, a centric clamping of the angle armature 4 is ensured.

By screwed along the threaded rod 22 nut 24 is corresponding to the free length of the threaded rod 22 large adjustment of the slider 17, 18, so that the Eckverbindungsvorrichtung can be used at different distances between the receiving openings 37 from the outside corner or from the corner strip 34. Preferably, the receiving openings 37 in the middle of the transverse members 36 and the formwork elements 2, 3 are arranged.

The receiving openings 37 may, for. B. used in the transverse bars 36 in particular cylindrical or conical sleeves 38 included, which are adapted to the respective engagement elements 26 and allow optimal power transmission from the slider 17, 18 on the formwork element 2, 3.

In principle, other engagement pairings can be provided instead of the described engagement elements 26 and engagement openings 37, which can provide a high and secure power transmission.

The angle armature 4 may also be formed as a one-piece casting with integrally formed positioning member 14. The anchor legs 6, 7 may be formed instead of a closed hollow sections in cross section U-shaped with only three walls.

The shuttering elements 2, 3 positioned in a corner arrangement have a plurality of, in particular, regularly arranged receiving openings 37. A plurality of such formwork elements 2, 3 can be arranged vertically above one another to create a higher concrete wall formwork and connected, braced or anchored to each adjacent formwork element by a plurality of Eckverbindungsvorrichtungen 1 and the angle armature 4.

Fig. 8 shows a concrete wall formwork 39 with the two outer formwork elements 2 and 3 according to Fig. 2 forming a formwork outer corner 40 and connected to the corner joint device 1 with at least one angle armature 4 and the corner bar 34 at right angles. The two outer formwork elements 2 and 3 are connected to each other with a further outer formwork element 41 or 42 via brackets or shutter locks 43 in planar arrangement edge-side together and form an outer formwork of concrete wall formwork 39. An inner formwork concrete wall formwork 39 includes a formwork inner corner member 44 and two inner formwork elements 45 and 46, which are connected by means of brackets or shutter locks 43 on both sides with the formwork inner corner member 44.

The outer formwork is connected to the inner formwork via anchoring devices 47. The anchor devices 47 each hold the two opposing formwork elements 41 and 45, 42 and 46 spaced apart to form the gap 48 and are loaded with high tensile forces when liquid concrete filled in the gap 48 due to its weight has high compressive forces on the two opposing ones Formwork elements 41, 45 and 42, 46 exercise. Such an anchor device 47 includes, for example, a threaded anchor rod 49, which extends through a spacer tube 50 and through the two formwork elements 41, 45 and 42, 46 and is clamped on both sides of the formwork elements by means of anchor nuts 52. The two formwork elements 41, 45 and 42, 46 may have in particular in transverse bars 36 included receiving openings 37, as the formwork elements 2 and 3 (see Fig. 1 ) and through which the respective anchor rod 49 extends. The DE 10 2014 012 037 A1 shows formwork elements with such receiving openings, which are to be used both for anchor rods as well as for the engagement elements 26 of the slide 17, 18. In principle, the slide can also have other engagement elements such as hooks or the like, which also in other places such. B. at openings 51 on particular horizontal stiffeners 53 of the formwork elements 2, 3 can attack.

In the corner region of the concrete wall formwork or on the formwork outer corner 40, the force acting on the outer formwork elements 2 and 3 by the concrete pressure load which presses them out, taken from the at least one corner joint device 1 and the angle armature 4 and the engagement elements 26 as a tensile force in the formwork elements 2 and 3 and introduced into the respective adjacent outer formwork elements 41 and 42. The corner strip 34, which can be connected by means of shutter locks 43 with the two adjacent shuttering elements 2, 3, ensures the correct corner positioning of the two outer shuttering elements 2 and 3. In the area of each slide 17 and 18, in which the force transmitted via the engagement member 26 is, a mutual anchoring of the outer formwork with the inner formwork over anchor devices, which extend as the farther armature devices 47 through the gap 48 and consequently through the concrete wall produced, is not required.

Therefore, can be dispensed with anchor devices that extend through the concrete wall to be produced and the z. B. at one of the DE 20 2006 013 331 U1 known Eckverbindungsvorrichtung are required (see figure, anchor devices with clamping bolts 18 and 30 directly to the inner corner of the two formwork panels 12 and 16 and near the outer corner of the two formwork panels 10 and 14). In addition to a time savings in the assembly of the formwork panels also eliminates an opening in the concrete wall, which otherwise caused by the removable clamping bolt or anchor rod surrounding and cast in the concrete wall spacer tube.

The described Eckverbindungsvorrichtung thus allows safe support and transmission of high clamping forces with which the two adjoining shuttering elements 2, 3 can be clamped, as long as no concrete is poured into the formwork, as well as filled with liquid concrete. This can be omitted in the formwork corner area otherwise required for force support anchor devices.

Basically, the use of the corner strip 34 is preferred, however, the corner joint device 1 can also with two overlapping arranged formwork elements 2, 3 (see FIG DE 20 2006 013 331 U1 ) can be used, wherein the angle armature 4 is formed in this case expediently without internally projecting positioning.

Fig. 9 shows the angle armature 4 in a modified embodiment. The two anchor legs 6, 7 of the angle armature 4 are formed from a tube 54 with a rectangular cross-section (see Fig. 10 ), in which a 90 ° cutout 55 is made in such a way that in each case 45 ° cut surfaces 56 and 57 are formed on the inner ends of the two anchor legs 6, 7 (45 ° angle of the cut surfaces 56 and 57 with respect to the longitudinal axis of the tube 54). The outer surface 58 forming the outer wall 58 of the tube 54 is retained. The two anchor legs 6, 7 are at this angle of 90 ° to form the outer corner 12 in the rectangular arrangement according to Fig. 11 bent against each other, in which abut the two cutting surfaces 56 and 57 on the anchor base 5 in a 45 ° -Berührungsebene to each other. For an exact mutual positioning of the two armature legs 6 and 7 can at the one armature leg 6 two z. B. approximately semicircular recesses 59 and 60 in the two mutually parallel tube walls 61 and 62 and on the other armature leg 7 two recesses 59 and 60 adapted to be approximately semicircular projections 63 and 64 formed in the oppositely directed bending of the two anchor legs 6 and 7 fit perfectly into each other ( Fig. 11 ).

Two expediently coextensive reinforcing plates 65 and 66 are in the corner region or on the anchor base 5 of the angle armature 4 on both sides opposite each other on the tube walls 61 and 62 of the armature legs 6 and 7 are arranged and z. B. attached by welding. For this purpose, each reinforcing plate 65 and 66 additionally at least one opening such. B. have a slot 67 which is disposed above the 45 ° -Berührungsebene the two armature legs 6 and 7 and in which a weld the two armature legs 6, 7 can connect with each other and with the respective reinforcing plate 65 and 66 respectively. The outer edge 68 of each reinforcing plate 65 or 66 expediently runs rectangular and is approximately congruent to the outer corner 12 of the two armature legs 6, 7 arranged or inwardly slightly set back, so that the reinforcing plates 65 and 66 in any case not projecting to the outside. The two reinforcing plates 65 and 65 are on the inner corner 13 of the two anchor legs 6, 7 beyond this inwardly and have a rectangular positioning member 69 with an inner corner 70 corresponding to the positioning member 14 of the first embodiment (see Fig. 5 ) on.

The slidably mounted on the respective armature leg 6, 7 slides 17 and 18 is z. B. from a piece of pipe with the armature leg 6, 7 adapted cross section and has the opening 21 containing outer end wall 20, the z. B. is welded to the pipe section. At the end of each armature leg 6, 7, a nut 71 is centrally inserted in the end opening 23 and fixedly attached to the armature arm 6, 7. For a custom fit attachment z. B. the two tube walls 61 and 62 have two opposite recesses 72 and 73, in which the nut 71 is inserted and welded to the respective pipe wall 61 and 62, respectively.

A threaded rod 74 is inserted through the opening 21. The threaded rod 74 has a screw head 75 which is rotatably mounted on the threaded rod 74 and with which the threaded rod 74 can be screwed into the respective nut 71 after placing the slider 17, 18 on the armature leg 6, 7. Due to the position of the screw head 75 relative to the nut 71, ie by the distance between the screw head 75 and the nut 71, the maximum extension position of the slide 17, 18 can be set and limited to the armature arm 6, 7. The function of this in the Fig. 9 to 11 illustrated angle armature 4 is similar to that of the first embodiment of the angle armature 4, wherein the nut 71 whose threaded rod 22 on the armature arm 6, 7 and the threaded rod 74 with the screw head 75 replaces the nut 24.

The individual features of the invention disclosed in the description and with reference to the embodiments as well as in the figures can be used in any technical appropriate arrangements and designs are combined with the subject invention in its general form. <B> LIST OF REFERENCES </ b> 1 corner connecting 31 front 2 An element 32 frame part 3 An element 33 frame part 4 angle anchor 34 cornice 5 anchor base 35 corner recess 6 To kosher kel 36 transverse spar 7 To kosher kel 37 receiving opening 8th reinforcing plate 38 shell 9 outer surface 39 Concrete wall form 10 section 40 Formwork outer corner 11 opening 41 outer formwork element 12 outside corner 42 outer formwork element 13 inside corner 43 assembly lock 14 positioning 44 Schalungsinneneckelement 15 palm 45 inner formwork element 16 inside corner 46 inner formwork element 17 pusher 47 anchoring device 18 pusher 48 gap 19 wall 49 tie rod 20 end wall 50 spacer tube 21 opening 51 opening 22 threaded rod 52 anchor nut 23 end opening 53 stiffening 24 mother 54 pipe 25 screw thread 55 neckline 26 engaging member 56 section 27 inner wall 57 section 28 Forming board 58 outer wall 29 Forming board 59 recess 30 front 60 recess 61 pipe wall 69 positioning 62 pipe wall 70 inside corner 63 head Start 71 mother 64 head Start 72 recess 65 reinforcing plate 73 recess 66 reinforcing plate 74 threaded rod 67 Long hole 75 screw head 68 outer edge

Claims (14)

Corner connecting device (1) of a concrete wall formwork with two formwork elements (2, 3) which can be connected to one another by means of the corner connection device (1) in an arrangement forming a formwork outer corner (40),
characterized,
in that the corner connection device (1) has at least one angled anchor (4) with an anchor base (5) and with two anchor legs (6, 7) extending in particular at right angles from the anchor base (5), each one of the two formwork elements (2, 3). are assigned to each armature leg (6, 7) a slide (17, 18) movably mounted and along the armature leg (6, 7) is adjustable,
in that each slider (17, 18) has an engagement element (26) which is designed to engage on an associated engagement receptacle (37) on the respective formwork element (2, 3), and
that each slide (17, 18) along the associated anchor legs (6, 7) can be fixed in clamping positions. Corner joining device according to claim 1,
characterized in that each slide (17, 18) at its armature leg (6, 7) is guided exclusively linearly displaceable. Corner connecting device according to claim 1 or 2,
characterized in that
either a threaded rod (22) on the anchor legs (6, 7) in the direction of displacement of the slide (17, 18) is fixed, on which a clamping unit or a nut (24) for clamping the slider (17, 18) is engaged
or a nut (71) on the respective armature leg (6, 7) is attached to which a clamping unit or threaded rod (74) with screw head (75) for clamping the slider (17, 18) is engaged. Corner connecting device according to claim 3,
characterized in that the slide (17, 18) has an end wall (20) with an opening (21) through which either the fixedly on the armature leg (6, 7) arranged threaded rod (22) and at which the nut (24 ) is in clamping engagement or the threaded rod (74) extends for engagement with the fixed nut (71) of the armature leg (6, 7) and on which the screw head (75) is in clamping engagement. Corner joining device according to one of claims 1 to 4,
characterized in that in the inner corner (13) of the anchor base (5) of the angle armature (4) an inwardly projecting positioning part (14, 69) is arranged. Corner connecting device according to one of claims 1 to 5,
characterized in that the engagement element (26) from the slide (17, 18) pin or pin-shaped projecting and in particular cylindrical or conical shaped part. Corner connecting device according to one of claims 1 to 6,
characterized in that for reinforcing the anchor base (5), a reinforcing plate (8) engages around the anchor base (5) on the outside and is fixedly connected to the anchor legs (6, 7) and / or at least one reinforcing plate (65, 66) flat on the armature legs (6, 7) is attached. Corner arrangement of formwork elements of a concrete wall formwork, the
forming an outer formwork corner (40) are arranged at an angle to each other and by means of a on the outer formwork elements (2, 3) on the outside arranged corner connecting device (1) are clamped to each other,
characterized,
in that the corner connecting device (1) is formed according to one of claims 1 to 7. Corner arrangement according to claim 8,
characterized in that on the formwork outer corner (40) a corner strip (34) on the end faces (30, 31) of the formwork elements (2, 3) is arranged on the one or the positioning part (14, 69) of the angle armature (4) is in holding engagement. Corner arrangement according to claim 8 or 9,
characterized in that the engagement seats (37) or receiving openings for the engagement elements (26) of the slides (17, 18) include in particular cylindrical or conical inserts or sleeves (38) which are adapted to the respective engagement elements (26). Corner arrangement according to one of claims 8 to 10,
characterized in that the engagement receptacles (37) or receiving openings on a support structure of the formwork element (2, 3), in particular on a transverse spar (36) of the formwork element (2, 3) are formed. Corner arrangement according to one of claims 8 to 11,
characterized in that each of the two outer formwork elements (2, 3) at least in the region of the angle armature (4) free from an anchoring device having an anchor connection with a respective associated inner formwork element (41, 42) or one of the inner formwork elements (41, 42) connecting formwork inner corner element (44). Corner arrangement according to claim 12,
characterized in that the area without anchor connection to the two outer formwork elements (2, 3) over the 1-fold to 3-fold length of the armature leg (6, 7) of the angle armature (4). Corner arrangement according to one of claims 8 to 13,
characterized in that the width of at least one of the two outer formwork elements (2, 3) coincides with the length of the associated armature leg of the angle armature (4).

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