EP2816175A1 - Shuttering tie holder, shuttering tie as well as shuttering element for receiving the same - Google Patents

Abstract

The present invention relates to a formwork anchor receptacle and a formwork anchor, which are used in the field of civil engineering. Furthermore, the invention relates to a formwork element. The formwork anchor receptacle is adapted to receive an anchor rod, which anchor rod is provided for the connection of formwork elements. The formwork anchor receptacle comprises a portion having an opening for insertion of an anchor rod and a ball portion for supporting against a formwork element.

Description

Technical area

The present invention relates to a formwork anchor receptacle and a formwork anchor, which are used in the field of civil engineering. Shuttering elements are placed with a certain distance from each other and connected before filling the gap formed in this way with a filling material by formwork anchors. The formwork anchors are removed after curing of the concrete, so that in the subsequent step, the formwork elements can be solved by the wall thus formed.

State of the art

As state of the art is a formwork anchor according to EP 2 060 703 A1 known, which is designed for tensile strength connecting formwork elements. This known formwork anchor consists of several sections or elements, wherein the anchoring element in relation to the second anchoring portion in the longitudinal direction freely displaceable and the engagement means can be fixed.

Furthermore, the DE 10 2010 002 128 A1 known, the anchor system of a concrete wall formwork with at least one locking device for an anchor rod of the anchor system shows. The locking device comprises an annular sealing element and a nut element for screwing in the anchor rod. Furthermore, a dome plate is provided, which can be fastened by means of fastening means on a rear side of the formwork element of the concrete wall formwork and has a spherically formed plate area with an opening in which the nut element is arranged with radial clearance.

Subject of the invention

It is an object of the present invention to provide a formwork anchor receptacle and a formwork anchor, with which it is possible to ensure the most regular anchor distances on a formwork element and at the same time a simple operation, and in this way to reduce the workload when setting up and connecting formwork elements.

This object is achieved by a formwork anchor receptacle according to claim 1, by a formwork anchor according to claim 6 and by a formwork element according to claim 14. Further preferred embodiments can be found in the dependent claims.

In the context of the present invention, a formwork anchor receptacle is provided with a ball portion which is arranged in a support component of a formwork element and allows a pivotability of the formwork anchor from the normal orientation relative to the formwork element (for example by 4 °).

According to the formwork anchor receptacle comprises a preferably cylindrical portion having an opening for insertion of an anchor rod and a ball portion for support against a formwork element.

The spherical configuration ensures that an offset between anchor passage openings of opposite formwork elements can be compensated by ensuring a certain deviation from the normal with respect to a formwork element. Despite this compensation, the formwork anchor receptacle or formwork anchors according to the invention ensures a load-bearing anchoring of the formwork elements and a seal against the filling area formed between the formwork elements.

Furthermore, the inventive design ensures that a formwork anchors can be operated from one side. The erection and connection of formwork elements is simplified in this way, and consequently labor costs can be reduced.

According to a preferred embodiment, the formwork anchor receiving an internal thread in at least a portion of the opening. About this thread, the formwork anchor receptacle can be releasably connected to an anchor rod.

Furthermore, a locking means, in particular two holding pieces, can be inserted into the formwork anchor receptacle and locked there, in particular with an elastic fixing means, specifically for locking an anchor rod with the formwork anchor receptacle. This allows easy handling.

According to a further embodiment, the locking means on grooves which engage in grooves of the anchor rod. Thus, the locking means can be quickly and safely connected to the anchor rod.

In a further embodiment, at one end portion of the ball portion, a sealing element in the opening added. In this way, leakage of introduced between the formwork elements filling material is avoided.

Furthermore, the present invention relates to a formwork anchor with an anchor rod, a first formwork anchor receptacle and a second formwork anchor receptacle. The formwork anchor receptacles each have a preferably cylindrical portion with an opening for insertion of the anchor rod and a ball portion for support against a formwork element. The first formwork anchor receptacle can be attached to a first end of the formwork anchor and the second formwork anchor receptacle to a second end of the formwork anchor. For the advantages of Schalungsankeraufnahmen for said formwork anchor reference is made to the above statements.

After a central anchorage can be provided with these elements when used with a formwork element, an appealing concrete image results. The central anchorage also eliminates unused anchor holes. This saves time and avoids operating errors on site.

Since the anchor rod is preferably conical, eliminates the use of cladding, which would otherwise be required in the formwork.

In addition to the above-mentioned embodiments of the first and second formwork anchor receptacle, in a preferred embodiment of the formwork anchor, the anchor rod at the end to which the second formwork anchor receptacle is attached, a Einschraubbegrenzung on.

Preferably, the anchor rod in the region of the end to which the first formwork anchor receptacle is attached, openings, through which a lock for locking the Anchor rods with the first formwork anchor receptacle is insertable.

Furthermore, the present invention is directed to a formwork element according to claim 14. Especially with high formwork elements, no additional worker is required on the operating side when the formwork anchor is installed. Even intermediate stages on the control side can be omitted. Furthermore, anchor points can be saved in addition to a general reduction in the formwork anchors, especially with raised formwork.

Since anchor points are preferably arranged centrally on the formwork element, it is avoided that the formwork anchors could collide with the joint tape or other means for sealing the joint when using the formwork elements in the foundation area.

Brief description of the drawings

Fig. 1

shows a sectional view of a formwork anchors and associated therewith formwork elements, wherein formwork anchor shots of the formwork anchor according to a first embodiment of the present invention are used

Fig. 2

shows a sectional view of a formwork anchor and two formwork elements according to a second embodiment of the present invention

Fig. 3

shows a sectional view of a formwork anchor and two formwork elements according to a third embodiment of the present invention

Fig. 4

shows a sectional view of a formwork anchor and two formwork elements according to a fourth embodiment of the present invention

Fig. 5a

is a perspective view of an in FIG. 4 used holding means for a formwork anchor

Fig. 5b

is a perspective view of an in FIG. 4 used alternative holding means for a formwork anchor

Fig. 6

is a perspective view of the in Fig. 4 Shuttering anchor shown with formwork anchor receptacle

Detailed Description of the Preferred Embodiments

Hereinafter, preferred embodiments of the invention will be explained in detail. Other modifications and variations of individual elements and components mentioned in this connection can each be combined with each other to form new embodiments.

In Fig. 1 two shuttering elements S are shown, between which a filling area is formed. For connecting the formwork elements S, a formwork anchor is provided which has an anchor rod 30, a first formwork anchor receptacle 10 and a second formwork anchor receptacle 20.

The first formwork anchor receptacle 10 is mounted in the installed state at one end of the anchor rod 30 and supported against a mounted on the formwork wall S support member 40. The second formwork anchor receptacle 20 is arranged at the opposite end of the anchor rod 30 and supported on a support member 40 of the other formwork wall S.

The support members 40 provided on the formwork elements S are designed such that they can receive elements or sections of a formwork anchor. In this case, the support components are preferably substantially identical, so that the anchor rod 30 with the first formwork anchor receptacle 10 and the second formwork anchor receptacle 20 can also be provided in a different orientation than in FIG FIG. 1 is shown.

The anchor rod 30, located in FIG. 1 extends from formwork element to formwork element, comprises at a first end an external thread 31 with a Einschraubbegrenzung 32, with the complete screwing of the second formwork anchor receptacle 20 a defined position of this is ensured with respect to the anchor rod 30. Adjoining the external thread 31 is a conical section 33 which, in the installed state, comes into contact with the backfilling material introduced between the formwork elements S, for example concrete. Since the portion 33 is cone-shaped, the anchor rod 30 can be removed from the hardened backfill material.

At that the male thread 31 opposite portion of the conical portion 33 of the anchor rod 30 is followed by another external thread 34 (in particular a trapezoidal thread), which has a lower pitch compared to the external thread 31. Furthermore, 34 openings 35 are provided in the region of the further external thread through which a lock for fixing the anchor rod 30 with the first formwork anchor receptacle 10 can be introduced.

The second formwork anchor receptacle 20 provided in the region of the external thread 31 of the anchor rod 30 has a substantially cylindrical portion 21 and a ball portion 22. The ball portion 22 forms a spherical rounding. Along the center axis of the cylindrical portion 21, an opening 23 extends through the formwork anchor receiving 20 therethrough. The opening 23 of the formwork anchor receptacle 20 is provided in sections with an internal thread 24 which engages in the external thread 31 of the anchor rod 30.

The described type of screw connection has the advantage that in the hardened backfill material no imprints of the fasteners remain, and thus results in an appealing concrete image.

The first formwork anchor receptacle 10 includes a first end and a second end. Between the first end and the second end extends a cylindrical portion 11, which is formed longer relative to the cylindrical portion 21 of the second formwork anchor receptacle 20, since the cylindrical portion 11 of the first formwork anchor receptacle 10 additionally serves the adjustability between the anchor rod 30 and the formwork anchor receptacle 10 , In this way, the formwork anchors can be adapted to different distances between the formwork elements, - as will be explained in detail below.

The first formwork anchor receptacle 10 further comprises a ball portion 12, which adjoins the cylindrical portion 11 and how the ball portion 22 of the second formwork anchor receptacle 20 forms an outer spherical rounding. The outer shape of the ball sections 12, 22 correspond here substantially so that - as already mentioned - the anchor rod 30 can be connected to the formwork anchor receptacles 10, 20 in a different orientation with the formwork elements S.

Along the center axis of the cylindrical portion 11 of the first formwork anchor receptacle 10 extends an opening 13. Through this opening 13, the anchor rod 30 in the formwork anchor receptacle 10 are inserted, and with an internal thread 14 of the formwork anchor receptacle 10 engage. This internal thread 14 is provided at an opposite end of the ball section 12 of the formwork anchor receptacle 10 in the region of the opening 13.

At least one support member 40 is attached to each formwork element S. Depending on the size of the formwork element S, the number of support components 40 may vary in order to provide a secure connection between different formwork elements S. Since the support members 40 in the in FIG. 1 illustrated embodiment on the left and right shuttering element S are formed substantially the same, only one of the support members is provided with reference numerals.

The support member 40 includes a mounting portion 41, which in the present embodiment according to Fig. 1 is firmly connected to formwork element S. For example, the support member 40 can be welded to the formwork element S.

Further, the support member 40 includes a receiving and supporting portion 42 which comprises a spherical ball socket 42a and a receiving portion 42b. In the region of the ball socket 42a, preferably in the middle of which an opening 43 for the passage of the anchor rod 30 is provided, the shuttering anchor receptacle 10 is received in the region of the ball portion 12 when shuttering elements S are connected to the anchor rod 30 with each other. The design of the ball socket 42a ensures that the first formwork anchor receptacle 10 (or the second formwork anchor receptacle 20) abuts, so that the material filled between the formwork elements S is prevented from exiting. The spherically formed ball socket 42a is in this case provided in the region of the inner wall of the formwork element S, so that the ball portion 12 (or 22) as possible comes to rest near the Verfüllbereich between the formwork elements S.

Furthermore, the support component 40 comprises holding means, in this embodiment a holder 44, which is detachably inserted into the receiving area 42b in order to attach the respective formwork anchor receptacle 10, 20.

In the Fig. 1 Formwork shown is constructed as follows.

First, the formwork elements S are erected at a distance from each other, and the anchor bar 30 provided with the first formwork anchor receptacle 10 is supported by one of the support components 40 (in FIG Fig. 1 from the left to the right), wherein the formwork anchor receptacle 20 already in the corresponding in Fig. 1 shown right formwork element is provided. The anchor bar 30, which is provided with the formwork anchor receptacle 10, is replaced by the supporting component 40 of FIG Fig. 1 left illustrated formwork element 11 (in FIG. 1 from left to right). In this case, the anchor rod 30 passes in sections through the support member 40 of the further formwork element S and is attached there.

After curing of the material filled between the formwork elements S material, the anchor rod 30 is released by a counterclockwise rotation on the side of the first formwork anchor receptacle 10. Due to the different thread pitches between the first formwork anchor receptacle 10 and the second formwork anchor receptacle 20, there is a relative movement between these elements during this rotation.

Subsequently, the second formwork anchor receptacle 20 is released from the anchor rod 30, and removed after loosening the retaining means 44 of the anchor rod 30 with the formwork anchor receptacle 10 attached thereto.

In the Fig. 2 The arrangement shown corresponds essentially to that in Fig. 1 , However, differently configured support members 40a are used for receiving the formwork anchor receptacles 10, 20. The support components 40a are in this case cup-shaped, and have in that region in which the respective ball portion comes to rest, a radius.

In the in Fig. 2 illustrated embodiment, an anti-rotation device 50 is additionally provided for locking the anchor rod 30 to the first formwork anchor receptacle 10. This anti-rotation device 50 is applied after insertion of a locking element by the first formwork anchor receptacle 10 and one of the openings 35 of the anchor rod 30 thereon.

At the in FIGS. 1 and 2 shown construction, the support members 40, 40a are each formed such that the formwork elements S are stackable on each other. This is ensured by the fact that the section components 40, 40a have substantially no projection over the formwork element level.

In Fig. 3 an alternative embodiment of a holder 44a is shown in the region of the first formwork anchor receptacle 10, with the emergence or rotation of the formwork anchor receptacle 10 relative to the portion member 40a is prevented. The holder 44a in this case comprises a fixing means 44a 'which projects beyond the plane of the formwork element S. With the fixing means 44a ', the holder 44a can be attached to the support member 40a and removed relatively easily as needed. The holder 44 provided in the region of the second formwork anchor receptacle 20 does not comprise any additional fixing means.

From the combination of the holders 44a, 44 it can be seen that they can be used depending on the specific application, and can be combined freely with the other components.

Fig. 4 relates to a further embodiment of the present invention. Instead of the external thread 34 used in the first embodiment, circumferential grooves or grooves 34a with a rectangular cross section or a trapezoidal cross section are provided on the anchor rod 30a in the region of the first formwork anchor receptacle 10a. Several of these grooves are provided with markings, which allow a certain Groborientierung in the length adjustment of the formwork anchor.

In the portion of the first formwork anchor receptacle 10a opposite the ball portion 12a, an opening 16a is provided. In this opening 16a, two half-shell holding pieces 17a are introduced together with the anchor rod 30a. After the half-shell holding pieces 17a have grooves 17b on their inner side, which engage in the grooves 34a of the anchor rod 30a, the half-shell holding pieces 17a are firmly connected to the tie rod 30a after being inserted into the opening 16a. In the inserted state, the half-shell holding pieces 17a abut against a projection 16b in the opening 16a. From this projection 16b, an opening 13a having a smaller diameter than in the area of the opening 16a is provided.

Further, at the end portion of the opening 16a, an elastic connecting means 18a (fixing spring ring) is inserted in the opening 16a, so that half-shell holding pieces 17a are pressed against the projection 16b and thus locked with the first formwork anchor receptacle 10a.

The second formwork anchor receptacle 20a is in the in Fig. 4 illustrated embodiment with a substantially cylindrical portion 21 a and a ball portion 22 a educated. However, in the region of the cylindrical portion 21a, a recess 21a 'is provided, into which a holder 44b can penetrate. Furthermore, as in the first embodiment, the second formwork anchor receptacle 20a comprises an opening 23a with an internal thread 24a.

The anchor rod 30a is formed in the region of the second formwork anchor receptacle 20a substantially equal to the first embodiment. By using a one-sided thread in the formwork anchor receptacle 20a of the input and Ausschalvorgang can be further accelerated.

Fig. 5a shows an embodiment of a holder 44a (in FIG Fig. 4 left), which is inserted into the receiving portion 42b of the support member 40 to fix the first or second formwork anchor receptacle in the support member. The holder 44a can be screwed to the shuttering element S via a fixing means 44a '.

Fig. 5b shows a further embodiment of a holder 44b (in Fig. 4 arranged on the right) for fixing a formwork anchor receptacle, preferably the second formwork anchor receptacle 20, 20a, in the support component. In this case, a flap spring 44b 'is used for fixing the position, which is applied in the functional state to the inner wall of the ball socket. In this way, the recesses and lugs are brought into the corresponding counter-deformations in the ball socket in functional position as a restraint and rotation.

The integrated locking system with the brackets 44,44a, 44b offers variable connection options.

Preferred embodiments

1. 1. formwork anchor receptacle (10, 10a, 20, 20a) for receiving an anchor rod (30, 30a), which anchor rod (30, 30a) is provided for connecting formwork elements (S), with:
   • a portion (11, 11a; 21, 21a) having an opening (13, 13a; 23, 23a) for insertion of an anchor rod (30, 30a),
   • characterized in that the formwork anchor receptacle (10, 10a, 20, 20a) has a ball portion (12, 12a, 22, 22a) for supporting against a formwork element (S).
2. 2. formwork anchor receptacle (10, 10a, 20, 20a) according to item 1, wherein the formwork anchor receptacle (10) has an internal thread (14; 24, 24a) in at least a portion of the opening (13; 23, 23a).
3. 3. Schalungsankeraufnahme (10a) according to one of the points 1-2, in which a locking means (17a), in particular two holding pieces (17a) in the formwork anchor receptacle (10a) can be inserted and locked there, in particular with an elastic fixing means (18a), for locking an anchor rod (30a) with the formwork anchor receptacle (10a).
4. 4. formwork anchor receptacle (10 a) according to item 3, wherein the locking means (17 a) has grooves (17 b) which engage in grooves (34 a) of the anchor rod (30 a).
5. 5. formwork anchor receptacle (10, 10 a) according to one of the items 1-4, in which at an end portion of the ball portion (12, 12a) a sealing element (15, 15a) is received in the opening (13, 13a).
6. 6. Formwork anchors with an anchor rod (30, 30a) and a first formwork anchor receptacle (10, 10a) and a second formwork anchor receptacle (20, 20a),
   the formwork anchor receptacles each having a preferably cylindrical portion (11; 21) with an opening (13, 13a; 23, 23a) for insertion of the anchor rod (30, 30a) and a ball portion (12, 12a; 22, 22a) for supporting against Have shuttering element (S),
   and the first formwork anchor receptacle (10, 10a) can be attached to a first end of the formwork anchor (30, 30a) and the second formwork anchor receptacle (20) can be attached to a second end of the formwork anchor (30, 30a).
7. 7. Shuttering anchor according to item 6, wherein the first formwork anchor receptacle (10, 10a) has an internal thread (14, 14a, 24, 24a) in at least a portion of the opening (13, 23, 23a).
8. 8. formwork anchor according to item 7, wherein the second formwork anchor receptacle (20, 20a) in at least a portion of the opening (21, 21a) has an internal thread (24, 24a) which preferably has a different pitch than the internal thread (14, 14a ) of the first formwork anchor receptacle (10, 10a).
9. 9. formwork anchor according to item 6, wherein a locking means (17a), in particular two holding pieces (17a), in the first formwork anchor receptacle (10a) insertable and fixable there, in particular with an elastic fixing means (18a), for locking an anchor rod (30a ) with the formwork anchor receptacle (10a).
10. 10. shuttering anchor according to item 9, wherein the locking means (17 a) grooves (17 b) which engage in grooves (34 a) of the anchor rod (30 a).
11. 11. shuttering anchor according to one of the points 6-10, wherein at one end portion of the ball portion (12, 12 a) of the first formwork anchor receptacle (10, 10 a) a sealing element (15, 15 a) in the opening (13, 13 a) is received.
12. 12. Formwork anchor according to one of the points 6-11, wherein the anchor rod (30, 30a) at the end to which the second formwork anchor receptacle (20, 20a) is mounted, a Einschraubbegrenzung (32, 32a).
13. 13. Formwork anchor according to one of the points 6-12, wherein the anchor rod (30, 30a) in the region of the end, on which the first formwork anchor receptacle (10, 10a) is mounted, openings (35) through which a lock for locking the anchor rod (30, 30a) with the first formwork anchor receptacle (10, 10a) is insertable.
14. 14. Formwork element (S) with a supporting component (40, 40a) for receiving a formwork anchor receptacle (10, 10a, 20, 20a) according to one of the items 1-5 or a formwork anchor according to one of the points 6-13, wherein the supporting component ( 40, 40a) has a ball socket (42a) for receiving the ball portion (12, 12a), wherein the ball socket (42a) is preferably arranged on the side facing the filling area of the shuttering element (S).
15. 15. Shuttering element (S) according to item 14, in which a holding means (44, 44a, 44b) can be inserted into the support component, for attaching the respective shuttering anchor receptacle (10, 10a, 20, 20a).

Claims (15)

Formwork anchor receptacle (10, 10a, 20, 20a) for receiving an anchor rod (30, 30a), which anchor rod (30, 30a) is provided for connecting formwork elements (S), with: a substantially cylindrical portion (11, 11a; 21, 21a) having an opening (13, 13a; 23, 23a) for insertion of an anchor rod (30, 30a), the substantially cylindrical portion being defined between a first end and a second one End of the formwork anchor receptacle extends, wherein the formwork anchor receptacle (10, 10a, 20, 20a) has a ball section (12, 22a, 22a) adjoining the substantially cylindrical section for supporting against a formwork element (S). A formwork anchor receptacle (10, 10a, 20, 20a) according to claim 1, wherein the form armature receptacle (10) has an internal thread (14; 24, 24a) in at least a portion of the opening (13; 23, 23a). Formwork anchor receptacle (10a) according to any one of claims 1-2, wherein the formwork anchor receptacle comprises a locking means, which locking means (17a), in particular two holding pieces (17a), in the formwork anchor receptacle (10a) can be inserted and locked there, in particular with an elastic fixing means (18a), for locking an anchor rod (30a) with the formwork anchor receptacle (10a). A shutter anchor receptacle (10a) according to claim 3, wherein the locking means (17a) has grooves (17b) which engage in grooves (34a) of the anchor rod (30a). Formwork anchor receptacle (10, 10a) according to one of claims 1-4, wherein at one end portion of the ball portion (12, 12a) a sealing element (15, 15a) in the opening (13, 13a) is received. Formwork anchor with an anchor rod (30, 30a) and a first formwork anchor receptacle (10, 10a) and a second formwork anchor receptacle (20, 20a),
the formwork anchor receptacles each having a substantially cylindrical portion (11; 21) with an opening (13, 13a; 23, 23a) for insertion of the anchor rod (30, 30a) and a ball portion (12, 12a; 22, 22a) for support against have a formwork element (S),
and the first formwork anchor receptacle (10, 10a) can be attached to a first end of the formwork anchor (30, 30a) and the second formwork anchor receptacle (20) can be attached to a second end of the formwork anchor (30, 30a). Formwork anchor according to claim 6, wherein the first formwork anchor receptacle (10, 10a) has an internal thread (14, 14a; 24, 24a) in at least a portion of the opening (13; 23, 23a). Formwork anchor according to claim 7, wherein the second formwork anchor receptacle (20, 20a) in at least a portion of the opening (21, 21a) has an internal thread (24, 24a) which preferably has a different pitch than the internal thread (14, 14a) first formwork anchor receptacle (10, 10a). Formwork anchor according to claim 6, wherein the first formwork anchor receptacle (10, 10a) comprises a locking means, which locking means (17a), in particular two holding pieces (17a), in the first formwork anchor receptacle (10a) can be inserted and fixed there, in particular with an elastic fixing means (18a), for locking an anchor rod (30a) with the formwork anchor receptacle (10a). Formwork anchor according to claim 9, wherein the locking means (17a) grooves (17b) which engage in grooves (34a) of the anchor rod (30a). Formwork anchor according to one of claims 6-10, wherein at one end portion of the ball portion (12, 12a) of the first formwork anchor receptacle (10, 10a) a sealing element (15, 15a) is received in the opening (13, 13a). Formwork anchor according to one of claims 6-11, wherein the anchor rod (30, 30a) at the end to which the second formwork anchor receptacle (20, 20a) is attached, a Einschraubbegrenzung (32, 32a). Formwork anchor according to one of claims 6-12, wherein the anchor rod (30, 30a) in the region of the end, on which the first formwork anchor receptacle (10, 10a) is mounted, openings (35) through which a lock for locking the anchor rod (30, 30a) with the first formwork anchor receptacle (10, 10a) is insertable. Shuttering element (S) with a supporting component (40, 40a) for receiving a shuttering anchor receptacle (10, 10a, 20, 20a) according to one of claims 1-5 or a shuttering anchor according to one of claims 6-13, wherein the supporting component (40, 40 a) a ball socket (42 a) for receiving the ball portion (12, 12 a), wherein the ball socket (42 a) preferably at the one to Verfüllbereich facing side of the formwork element (S) is arranged. Shuttering element (S) according to claim 14, in which in the support member, a holding means (44, 44a, 44b) is insertable for attaching the respective formwork anchor receptacle (10, 10a, 20, 20a).

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