EP3511487A1 - Concrete formwork element and method for producing a concrete formwork, formwork anchor recess for a concrete formwork anchor in a concrete formwork element. - Google Patents

Abstract

A formwork anchor receptacle (1) for a concrete formwork anchor comprises an anchor thread (2) for receiving a formwork anchor with an anchor thread longitudinal axis (3) and a fastening element (4) for the detachable fastening of the formwork anchor receptacle (1) to a formwork element, so that an axial displacement along the anchor thread longitudinal axis (3) can be prevented by positive locking. An anti-twist device (5) is designed to prevent the formwork anchor receptacle (1) from rotating when the formwork anchor is fastened. The fastening element (4) is designed in such a way that it can be brought into engagement with transverse (6) and / or longitudinal struts (7) and / or openings (8) in a transverse (6) or longitudinal strut (7) of the formwork wall .

Description

The invention relates to a formwork anchor receptacle for a concrete formwork anchor in a concrete formwork element, a concrete formwork element and a method for producing a concrete formwork according to the preamble of the independent claims.

Formwork anchors for concrete formwork are already known in the art, which serve to hold the position of the wall formworks when filling the gap between the formwork with concrete. For this purpose anchor nuts are arranged on a formwork anchor on both sides. This anchor rod is removed after curing of the concrete in the space between the two wall formwork again. Usually, these formwork anchors are fixedly provided in the formwork elements, so that special formwork elements are necessary, if access to the anchorage from only one side, is possible. In the production of concrete formwork, a first formwork wall is first positioned, the setting formwork. The second formwork wall is referred to as Schlischschalung. Usually access from both sides of the formwork is possible, so that the anchoring nuts can be easily fastened from both sides.

From the EP 2 536 899 For example, a formwork anchor is known, which is mounted on the shuttering side installed in the element and then accessible from the Schlischschalungsseite.

A disadvantage of this design, however, is the very complicated and complex construction and the need to use special formwork elements to a special formwork anchors to fix in the concrete formwork at all. This leads to very high construction costs.

It is therefore an object of the invention to avoid the disadvantages of the prior art and in particular to provide a formwork anchor receptacle, a concrete formwork element and a method for producing a concrete formwork, which allow unilaterally operable anchoring, wherein still standard concrete formwork elements and standard anchor rods can be used.

The object is achieved by a formwork anchor receptacle for a concrete formwork anchor, which comprises an anchor thread for receiving a formwork anchor with an anchor thread longitudinal axis. Furthermore, the formwork anchor receptacle comprises a fastening element for releasably securing the formwork anchor receptacle to a formwork element, so that an axial displacement along the armature thread longitudinal axis can be prevented by positive locking. The formwork anchor receptacle further comprises an anti-rotation device for preventing rotation of the formwork anchor receptacle when attaching the formwork anchor, wherein the fastening element is designed such that it can be brought into engagement with transverse and / or longitudinal struts and / or openings in a transverse strut or longitudinal strut of the formwork element.

Such a formwork anchor receptacle can be easily attached to an existing concrete formwork element and thus enables unilateral anchoring with standard concrete formwork elements.

For the purposes of the application, a positive fit is understood to mean that only a form fit is present. A thread in Ankergewindelängsachserichtung is not understood under positive locking.

The rotation and the fastener may be separate elements.

Thus, the flexibility increases and the two elements can be made distinctly dedicated to their purpose.

The anti-rotation device can comprise an anti-rotation opening, in particular a slot, into which the fastening element can be introduced. The fastening element can in particular be introduced into the opening in such a way that an insertion direction of the fastening element differs from the direction of the armature thread longitudinal axis. Preferably, the insertion direction of the fastening element is arranged substantially perpendicular to the armature thread longitudinal axis.

Thus, the two elements anti-rotation and fastener synergistically together, thus leading to a simple design of the component. An insertion direction of the fastening element, which differs from the direction of the armature thread longitudinal axis, leads to a real positive connection between the fastening element and the slot can be achieved. For axial attachment no frictional forces are necessary in this case.

The fastening element may comprise a securing element for fixing the fastening element in an engaged position.

Thus, the fastener is securable in position, so that any accidental release of the fastener is prevented. In particular, since the access of the setting formwork, arranged on the formwork anchor receiving element is no longer possible, a secure attachment of the fastener is useful.

The fastening element is preferably designed such that it can be easily inserted through the anti-rotation opening and in a locking position slip out or make it impossible. In particular, therefore, a bolt element is provided with a slot which is coaxial with the fastener inserted and thereafter at a different angle, in particular substantially vertically fixed.

The rotation, in particular a contact surface of the rotation, which can be applied to a formwork element, in particular to a cross member of a formwork element, can be formed substantially parallel to the armature thread longitudinal axis.

Thus, a simple rotation can be achieved on the cross member or on a longitudinal strut, in which abuts the contact surface on the strut.

The contact surface may be formed substantially at the same height with the armature thread longitudinal axis or it may be formed a distance B between the anchor thread longitudinal axis and contact surface. The distance B is the minimum perpendicular distance between a projection of the anchor thread longitudinal axis and the contact surface.

The fastener may be captively attached to the formwork anchor receptacle.

Thus, the likelihood that the fastener is lost and the formwork anchor receptacle is reduced always completely and easily attached to a formwork element.

The minimum distance from the armature thread longitudinal axis perpendicular to the anchor thread longitudinal axis and the opening may be 70mm to 160mm, preferably 75mm to 100mm, more preferably 80-85mm.

In such a distance can be achieved on the one hand by the leverage a simple rotation and on the other hand can be openings in the cross members use, which are also arranged perpendicular to the Ankergewindelängsachse, which are already present in the concrete formwork elements. With these holes and the opening, the fastener can attach the formwork anchor receptacle to a formwork element.

The fastening element may comprise a bolt which can be introduced into an opening of a formwork element.

A bolt is easy to produce and fits optimally in the opening of a formwork element. Thus, the fastener can be easily and inexpensively.

The fastening element can be designed in such a way that it can be brought into engagement with the anti-twist device and a concrete formwork element at the same time.

Thus, the fastener securing the anti-rotation in position, prevent axial displacements of Schalungsankeraufnahme and thus cause a synergistic effect between the two elements.

The formwork anchor receptacle may have a thread for receiving the anchor rod, wherein the thread has a stop for the anchor rod.

By a stop can be determined when mounting the anchor rod sure whether the anchor rod is in the correct position.

The stop may be, for example, a separate stop behind the thread, so that additionally by visual inspection, the position of the anchor rod can be controlled.

Alternatively, the stopper may be formed by a soldering point or the like on the thread.

The object is further achieved by a formwork element having at least one formwork anchor opening, in particular a formwork anchor opening in a longitudinal strut, and preferably an opening in a longitudinal or transverse strut, wherein the opening in the longitudinal or transverse strut is arranged substantially perpendicular to the formwork anchor opening. A formwork anchor receptacle as previously described can be brought into engagement with the formwork element.

The arrangement of the openings is such that in each case the longitudinal axis of the opening in the longitudinal or transverse strut and the longitudinal axis of the shuttering anchor opening, ie in the case of round openings, the central axis of the round opening are arranged substantially perpendicular to each other.

Thus, a concrete formwork element can be produced from a standard formwork element with the aid of the formwork anchor receptacle for anchoring that can be operated on one side. If the same concrete formwork element Afterwards it should be used again as an accessible closing formwork, the formwork anchor receptacle can be easily dismantled again.

This saves costs for additional concrete formwork elements.

The fastener can fix the anti-rotation in its engaged position, in particular, the fastener through an opening in the rotation and through an opening in a strut of the formwork element, preferably an opening in a cross member of the
Concrete formwork element, be attached.

Thus, with a Befestigungsarbeitsschritt, namely the insertion of the fastener in anti-rotation and formwork element opening, the formwork anchor receptacle are easily attached and also easily disassembled.

Preferably, the fastener is easily plugged, and includes no thread but only a surface with which no thread locking can be achieved. Also, the opening in the strut of the formwork element does not comprise a thread but corresponds to the normal surface of the struts.

A distance C between the longitudinal axis of the fastening element and anchor thread longitudinal axis 3 can be between 100 mm and 160 mm, preferably 110 mm to 150 mm, particularly preferably between 120 mm and 140 mm. In particular, the distance C is 125.5mm or 140mm, depending on whether it is a large formwork element or a normal formwork element.

• Befestigung einer Schalungsankeraufnahme, insbesondere einer Schalungsankeraufnahme wie vorhergehend beschrieben, an einem Betonschalungselement, wobei die Schalungsankeraufnahme lösbar ausgebildet ist, insbesondere durch eine Steckverbindung lösbar ausgebildet ist.

To achieve the object, furthermore, a method for producing a concrete formwork, which comprises the following steps:

• Attachment of a formwork anchor receptacle, in particular a formwork anchor receptacle as described above, on a concrete formwork element, wherein the formwork anchor receptacle is detachably formed, in particular detachably formed by a plug connection.

Thus, the formwork anchor receptacle can be easily attached to a standard concrete formwork element, if a one-sided operation anchoring is desired. If two-sided anchoring should be possible, the formwork anchor receptacle can be easily removed again from the concrete formwork element, and thus the concrete formwork element can be used as before.

The concrete formwork element can be positioned after fixing the formwork anchor receptacle as an adjustment formwork.

Thus, a use of concrete formwork element is possible as a pure setting formwork. In this case, it is preferred that the formwork anchor receptacle is attached to the concrete formwork element prior to positioning the concrete formwork element to allow unilateral operable anchoring, since access after positioning as an adjustment formwork can be difficult.

It can be positioned a closing formwork.

By positioning a closing formwork, the setting formwork can be anchored with the closing formwork, and a concrete wall can be cast. A standard formwork anchor can be found from the side of the closing formwork in the formwork anchor receptacle be secured to the shuttering, without an access from the shuttering side is necessary.

This leads to low production costs of the concrete wall.

Figur 1:

Eine erfindungsgemässe Schalungsankeraufnahme in einer perspektivischen Darstellung,

Figur 2:

Eine erfindungsgemässe Schalungsankeraufnahme in einer alternativen perspektivischen Darstellung,

Figur 3:

Eine Vorderansicht der Schalungsankeraufnahme gemäss Figur 1,

Figur 4:

Eine rückseitige Ansicht der Schalungsankeraufnahme aus Figur 1,

Figur 5:

Eine Seitenansicht der Figur 1,

Figur 6:

Eine Draufsicht auf eine Schalungsankeraufnahme nach Figur 1,

Figur 7:

Eine alternative Ausführungsform eine Schalungsankeraufnahme für Grosselemente,

Figur 8:

Eine zweite perspektivische Darstellung des Schalungsankeraufnahmeelementes aus Figur 7,

Figur 9:

Eine Vorderansicht der Schalungsankeraufnahme aus Figur 7,

Figur 10:

Eine rückseitige Ansicht der Schalungsankeraufnahme aus Figur 7,

Figur 11:

Eine Draufsicht auf eine Schalungsankeraufnahme aus Figur 7;

Figur 12:

Eine perspektivische Ansicht einer Schalungsankeraufnahme im Eingriff an einem Betonschalungselement;

Figur 13:

Eine perspektivische Ansicht einer Schalungsankeraufnahme im Eingriff an einem Betonschalungselement;

Figur 14:

Eine perspektivische Ansicht einer Schalungsankeraufnahme im Eingriff an einem Schalungsgrosselement;

Figur 15:

Eine perspektivische Ansicht einer Schalungsankeraufnahme im Eingriff an einem Schalungsgrosselement.

In the following, the invention is illustrated by way of example by way of example. Hereby show:

FIG. 1:

An inventive formwork anchor recording in a perspective view,

FIG. 2:

An inventive formwork anchor recording in an alternative perspective view,

FIG. 3:

A front view of Schalungsankeraufnahme according to FIG. 1 .

FIG. 4:

A back view of the formwork anchor receptacle FIG. 1 .

FIG. 5:

A side view of the FIG. 1 .

FIG. 6:

A plan view of a formwork anchor recording after FIG. 1 .

FIG. 7:

An alternative embodiment of a formwork anchor receptacle for large elements,

FIG. 8:

A second perspective view of the formwork anchor receiving element FIG. 7 .

FIG. 9:

A front view of the formwork anchor receptacle FIG. 7 .

FIG. 10:

A back view of the formwork anchor receptacle FIG. 7 .

FIG. 11:

A plan view of a formwork anchor receptacle of Figure 7;

FIG. 12:

A perspective view of a formwork anchor receptacle engaged on a concrete formwork element;

FIG. 13:

A perspective view of a formwork anchor receptacle engaged on a concrete formwork element;

FIG. 14:

A perspective view of a formwork anchor receptacle engaged on a formwork element;

FIG. 15:

A perspective view of a formwork anchor receptacle engaged on a formwork element.

FIG. 1 shows a formwork anchor receptacle 1 with an anchor thread 2. The anchor thread 2 is inserted into an opening of a concrete formwork element. The anchor thread 2 has an anchor thread longitudinal axis 3. The formwork anchor receptacle 1 has a fastening element 4 in the form of a bolt. The bolt is captively attached to the formwork anchor receiving element 1. In this case, the captive attachment is achieved by chain elements. Chain elements have the advantage that the fastening element 4 is at the same time easily movable. The fastening element 4 further has a securing element 10 with which the fastening element 4 can be fixed in its fastening position. Furthermore, the formwork anchor receptacle 1 on a rotation 5. The rotation 5 prevents rotation of the formwork anchor receptacle 1 when attaching or releasing an anchor in the anchor thread 2. The anti-rotation 5 further has an anti-rotation 9 in the form of a slot. The slot is used to receive the fastener 4 and is positioned in a mounting position above an opening in a transverse or longitudinal strut (8, not shown) of a concrete formwork element. The fastening element 4 can thus simultaneously fix the anti-rotation 5 and the formwork anchor receptacle 1 on the concrete formwork element. The rotation 5 has a contact surface 11 which rests in the mounting position on a transverse or longitudinal strut. The distance A between the anti-rotation opening 9 and the armature thread longitudinal axis 3, measured perpendicular to the armature thread longitudinal axis, is 81.5 mm. The formwork anchor receptacle 1 is preferably made of steel or aluminum. The individual parts are preferably welded or screwed or also connected, for example, the chain by positive locking. Of course, it is also conceivable to make the formwork anchor receptacle at least partially in one piece.

FIG. 2 shows an alternative perspective of the element of Figure 1. For the individual elements is therefore on the description of FIG. 1 directed.

FIG. 3 shows a front view of Schalungsankeraufnahme according to FIG. 1 , The formwork anchor receptacle 1 shows in the front view the anchor thread 2 and the rotation 5. The rotation 5 has the contact surface 1, which rests in the mounting position on a transverse or longitudinal strut of a concrete formwork wall. The rotation 5 and the anchor thread 2 are connected by a mounting plate, which also serves as a fastening for the fastening element 4. The fastening element 4 is fastened by means of a chain on the connecting element. The fastening element 4 has Furthermore, a securing element 10, which a positive securing of the fastening element in a Verdrehsicherungsöffnung 9 (see FIG. 1 ) and an opening of a transverse or longitudinal strut 8 (not shown).

FIG. 4 shows the rear view of the formwork anchor receptacle 1 from FIG. 1 , The anti-rotation 5 is in a slot of the connecting plate for the anchor thread 2 (see FIG. 3 ) arranged.

FIG. 5 shows a side view of FIG. 1 , It can be clearly seen that the anchor thread 2 and the rotation 5 are at a height. There is thus no distance perpendicular to the contact surface 11 and the armature thread longitudinal axis 3 (see FIG. 1).

FIG. 6 shows a plan view of the formwork anchor receptacle 1 from FIG. 1 , Visible is the distance A between the anchor thread longitudinal axis 3 and anti-rotation opening. 9

FIG. 7 shows an alternative embodiment of a formwork anchor receptacle 1 for large elements of concrete formwork walls. The formwork anchor receptacle 1 has an anchor thread 2 and a fastening element 4. In the anchor thread 2, which is an internal thread, can screw a standard formwork anchor. The formwork anchor receptacle 1 is attached on the one hand by fastener 4 and on the other hand by rotation 5 on the element. For this purpose, the fastening element 4 is inserted through the anti-rotation opening 9 and through an opening in the concrete formwork element, so that the formwork anchor receptacle 1 is positively secured against rotation and axial displacement. The fastening element 4 further has a securing element 10, which is the fastening element 4 in the mounting position in anti-rotation opening 9 and opening 8 (not shown) of concrete shuttering wall secures. Anchor thread 2 and anti-rotation 5 are connected by a connecting element, so that their distance is fixed to each other. FIG. 8 shows an alternative perspective view of the formwork anchor receptacle 1 from FIG. 7 , The individual elements are in FIG. 8 not described again, but this is going on FIG. 7 directed.

FIG. 9 shows a front view of the formwork anchor receptacle 1 from FIG. 7 , It can be clearly seen that between contact surface 11 and anchor thread longitudinal axis 3 (see FIG. 7 ) a distance B is present. The distance B is 124mm

FIG. 10 shows a rear view of the formwork anchor receptacle 1 from FIG. 7 ,

FIG. 11 shows a plan view of a formwork anchor receptacle 1 from FIG. 7 , The distance A between the armature thread longitudinal axis 3 and anti-rotation 9 is in this alternative embodiment 81.5mm. Such a formwork anchor receiving element is therefore suitable for large concrete formwork elements.

The Figures 12-15 each show perspective views of a formwork anchor receptacles 1 in engagement in a concrete formwork element. The formwork anchor receptacles 1 are connected to the anchor thread 2 (see Figures 1-11 ) are arranged in the respective longitudinal strut 7 of the concrete formwork element. The anti-rotation 5 is in each case on a transverse strut 6 and is secured with fastener 4. The distance C between the longitudinal axis of the fastening element 4 and anchor thread longitudinal axis 3 is 125.5 mm or 140 mm, depending on the arrangement of the opening in the transverse strut 6, through which the fastener is passed.

Claims (15)

Formwork anchor receptacle (1) for a concrete formwork anchor comprising an anchor thread (2) for receiving a formwork anchor with an anchor thread longitudinal axis (3), a fastening element (4) for releasably securing the formwork anchor receptacle (1) on a formwork element, so that an axial displacement along the armature thread longitudinal axis ( 3) can be prevented by positive locking, an anti-rotation device (5) for preventing rotation of Schalungsankeraufnahme (1) when securing the shuttering anchor, characterized in that the fastening element (4) is designed such that it with transverse (6) and / or Longitudinal struts (7) and / or openings (8) in a transverse (6) or longitudinal strut (7) of the formwork element can be brought into engagement. Formwork anchor receptacle (1) according to claim 1, characterized in that the rotation lock (5) and the fastening element (4) are separate elements. Schalungsankeraufnahme (1) according to any one of the preceding claims, characterized in that the rotation (5) comprises a Verdrehsicherungsöffnung (9), in particular a slot, in which the fastening element (4) can be introduced, wherein the fastening element (4) in particular such in the anti-rotation opening (9) can be introduced, that an insertion direction of the fastening element (4) differs from the direction of the armature thread longitudinal axis (3). Formwork anchor receptacle (1) according to one of the preceding claims, characterized in that the fastening element (4) comprises a securing element (10) for fixing the fastening element (4) in an engaged position. Schalungsankeraufnahme (1) according to any one of the preceding claims, characterized in that the rotation lock (5), in particular a contact surface (11) of the rotation (5) which can be abutted to a formwork element, in particular to a transverse strut (6) of a formwork element, is formed substantially parallel to the armature thread longitudinal axis (3). Formwork anchor receptacle (1) according to one of the preceding claims, characterized in that the fastening element (4) is captively fastened to the formwork anchor receptacle (1). Formwork anchor receptacle (1) according to one of claims 3 to 6, characterized in that the minimum distance from the armature thread longitudinal axis (3) perpendicular to the armature thread longitudinal axis (3) and the anti-rotation opening (9) is 125 mm and in particular is a maximum of 140 mm. Formwork anchor receptacle (1) according to one of the preceding claims, characterized in that the fastening element (4) comprises a bolt which can be introduced into an opening (8) of a concrete formwork element. Formwork anchor receptacle (1) according to one of the preceding claims, characterized in that the fastening element (4) is designed such that it can be brought into engagement with the anti-twist device (5) and a concrete formwork element at the same time. Concrete formwork element (12) having at least one shutter anchor opening, in particular a shutter anchor opening in a longitudinal strut, and preferably an opening (8) in a longitudinal or transverse strut, wherein the opening (8) is arranged in the longitudinal or transverse strut substantially perpendicular to the shutter anchor opening, characterized in that a formwork anchor receptacle (1) according to one of the preceding claims with the concrete formwork element (12) is engaged. Concrete formwork element (12) according to claim 10, characterized in that the fastening element (4) fixes the anti-rotation device (5) in its engaged position, in particular the fastening element (4) by an anti-rotation opening (9) in the anti-rotation device (5) and through an opening ( 8) in a strut of the concrete formwork element (12), preferably an opening (8) in a transverse strut of the concrete formwork element (12) is fixed. Method for producing a concrete formwork comprising the steps: - Fixing a formwork anchor receptacle (1), in particular a formwork anchor receptacle (1) according to one of claims 1 to 9, to a concrete formwork element (12), wherein the formwork anchor receptacle (1) is detachably formed, in particular by a plug connection. A method according to claim 12, characterized in that after fixing the formwork anchor receptacle (1), the concrete formwork element (12) is positioned as an adjustment formwork. A method according to claim 13, characterized in that a closing formwork is positioned. A method according to claim 14, characterized in that a formwork anchors, starting from the side of the closing formwork in the formwork anchor receptacle (1) of the setting formwork is fixed without an access from the setting formwork side is necessary.

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