EP2336441A2 - Anchor bar for encasing in concrete - Google Patents

Abstract

The anchor rail (1) comprises a half-open profile (2), which has brackets (3), and anchor elements that project away on one of the brackets outward of the half-open profile. The anchor elements are formed in a single-piece manner from the material of the anchor rail as bending latches (6'), which are connected with the anchor rail over the bending edges (8).

Description

The invention relates to an anchor rail for setting in concrete in concrete according to the preamble of claim 1.

Under the term Halfenschiene be sold by the company Halfen anchor rails, which consist of a semi-open profile, in particular a U-profile, which is optionally filled in its interior with a Dämmstreifen or full foam filling. Such anchor rails are inserted into the formwork for the production of a precast concrete slab and poured with, which then a special bond between the anchor rail in concrete precast slab is achieved.

Sense of Einbetonierung the known anchor rail is that the anchor rail should provide an increased capacity at the specific areas, it is known that are welded or screwed to the base leg of the anchor rail head bolts, which extend into the concrete and anchored there. This is intended to improve the anchoring of the anchor rail in the concrete.

It is also known to provide the improvement of anchoring the anchor rail in concrete next to the head bolt and so-called I-profiles. These are double-T-shaped profile strips which are welded onto the base leg of the anchor rail and thus also improve their bond in the concrete material of the precast slab.

It has now been found that the welding of bolt anchors or the welding of I-profiles is extremely expensive and the production of such anchor rail is very expensive.

The invention is therefore the object of developing an anchor rail of the type mentioned so that a much cheaper production is guaranteed.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that at least one of the legs of the anchor rail (be it the base leg or one or more of the side legs) a bending tab is divided in such a way that with the aid of a cutting tool a three-sided circumferential cutting edge is generated in the leg of the anchor rail, whereby a one-sided connected to the leg sheet metal strip is formed, which is bent from the plane of the leg upwards.

With the given technical teaching, this results in the significant advantage that it is no longer necessary to connect head bolts or I-anchors to the base leg of the anchor rail by a welding operation. According to the feature of the invention, the bending tab is now generated from the material of the anchor rail itself, which is cut at least on three sides with cutting lines, so that thus a bending tab is formed, which is still connected via a bending edge with the material of the anchor rail.

If it is mentioned in the following description that the anchor rail is formed as a U-profile, this is not to be understood as limiting. Only for the sake of simpler description, it is assumed in the following description of the formation of the anchor rail as a U-profile.

It is within the scope of the present invention that the anchor rail can also be formed from other profile shapes, such. B. semi-circular profiles, elliptical profiles, polygonal profiles and the like. It is only essential that the anchor rail is designed as a semi-open profile in order to achieve a relation to the respective bending tab arranged continuous open groove into which corresponding fasteners can be inserted, plugged or secured in any other way.

It is important in the present invention according to that from at least one of the legs of the semi-open profile one or more such bending tabs are cut out by a cutting tool - especially a laser cutting tool - such bending tabs, which then only only via a bending edge with the material of the respective leg of the semi-open profile are connected.

For the sake of simplicity of description, it will be assumed in the following description that such bending tabs will be cut out onto the base leg of the semi-open profile.

However, the invention is not limited thereto. It can be cut out of the side legs of the half-open profile even more bending tabs or it may be provided on the side legs a combination of bending tabs on the base leg and bending tabs.

In a preferred embodiment of the invention, it is also provided that after cutting the bending tab, which is then only connected via a single bending edge with the rest of the material of the base leg, a rotation of the bending tab takes place by 90 °.

Here, this rotation can be done either in the region of the bending edge next to the base leg of the anchor rail, or the bending tab can also be rotated at its upper free end by 90 °.

The invention thus leaves it completely open, whether a lower or an upper twist of the bending tab is present or whether both twists are given.

The bending tab can thus be twisted out of the material of the base leg once or several times by 90 ° in the raised position.

In a further development of the invention, it is also provided that the bent out of the material of the base leg bending tab still now additionally receives edge cuts in order to achieve an even better bond in the concrete material.

Likewise, it may be provided that the bending tab is pierced in order to achieve through drilling openings also a penetration of concrete material in these open positions.

In a third embodiment, it may be provided that at the free upper end of the bending tab, an approximately vertically extending slot protrudes partially in the direction of the longitudinal axis of the bending tab in the material of the bending tab and the slot thus defines two expansion halves of the bending tab, with a separate tool apart can be spread so as to be spread over the existing width of the bending tab out.

Also in the area of these expansion halves borehole recesses or lateral cuts can be provided.

It is important in the invention, moreover, that in the interior of the U-profile, a profile sheet is inserted, which serves to hold associated drilling screws or the like. Thus, any fastening elements can be inserted into the U-profile of the anchor rail or fastened in another way to serve as a holder for objects to be fastened thereto.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design illustrated in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Figur 1:

Draufsicht auf eine Ankerschiene im Zustand, wenn Schnittlinien vorgesehen sind, um Biegelaschen abzuteilen

Figur 2:

Seitenansicht der Ankerschiene nach Figur 1 mit bereits herausgebogenen Biegelaschen

Figur 3:

eine Seitenansicht auf der Anordnung nach Figur 2

Figur 4:

Schnitt gemäß der Linie 2 durch die Ankerschiene nach dem Umformen der Biegelaschen

Figur 5:

eine in eine Fertigteilplatte einbetonierte Ankerschiene mit Befestigungselementen mit einer anderen Umbiegung der Biegelasche

Figur 6:

eine gegenüber Figur 5 abgewandelte Ausführungsform

Figur 7:

ein Anwendungsbeispiel für die Anwendung der Ankerschiene nach der Erfindung bei der Verbindung von zwei aneinander anstoßenden Fertigteilplatten

Figur 8:

Schnitt gemäß der Linie 1-1 in Figur 7 durch den sogenannten Flurkoffer

Figur 9:

Schnitt gemäß der Linie 2-2 in Figur 7 durch die Parallelanordnung der Ankerschiene

Show it:

FIG. 1:

Top view of an anchor rail in the state when cutting lines are provided to divide bending tabs

FIG. 2:

Side view of the anchor rail after FIG. 1 with already bent bent tabs

FIG. 3:

a side view of the arrangement according to FIG. 2

FIG. 4:

Section along the line 2 through the anchor rail after forming the bending tabs

FIG. 5:

an anchored in a prefabricated slab anchor rail with fasteners with another bend the bending tab

FIG. 6:

one opposite FIG. 5 modified embodiment

FIG. 7:

an application example of the application of the anchor rail according to the invention in the connection of two abutting prefabricated panels

FIG. 8:

Section according to the line 1-1 in FIG. 7 through the so-called corridor case

FIG. 9:

Section according to the line 2-2 in FIG. 7 by the parallel arrangement of the anchor rail

In FIG. 1 In general, an anchor rail 1 is shown, which preferably consists of a U-profile 2. It has already been pointed out in the general description section that the present embodiment description relates to a U-profile only for the sake of simpler description, but that also other profile shapes can be used.

Such a U-profile consists of a base leg 3, on the material integral, the two side legs 4, 5 are formed, which may possibly even in frontal side legs 4 'and 5' can pass.

This is in the interior of the U-profile 2 a central longitudinal axes extending, through recess designed, which may optionally be filled by an insulating strip 11.

The task of the insulating strip 11 is to ensure that the liquid concrete material does not flow into the interior of the anchor rail 1 when the anchor rail 1 is cast in the prefabricated panels 24, 26 shown below.

Depending on the case design, the insulating strip may remain at the location of its installation, or it may also be removed after setting in the prefabricated panels 24, 26.

According to FIG. 1 be made with a suitable cutting tool, in particular a laser cutter three contiguous cutting lines in the material of the base leg 3, which merge into each other at an angle of 90 °, so that thus a three-sided limited bending tab 6 is cut out of the material of the base leg 3, the only only is connected via the bending edge 8 with the material of the base leg 3 of the U-profile 2.

In a further manufacturing step is then according to FIG. 3 and 4 the bending tab 6 bent up in the direction of arrow 10, wherein the spaced apart bending tabs 6 each between them form an intermediate region 9 of the material of the base leg 3. It revealed itself during bending corresponding recesses 17 in the material of the base leg 3, which additionally takes place through these recesses 17 anchoring in the concrete material of the precast panels 24, 26.

After bending up the bending tabs 6, these are preferably rotated by 90 °.

The FIG. 4 shows here that the rotation 12 takes place in the vicinity of the bending edge 8 on the base leg 3.

The FIG. 5 shows, however, as another embodiment, that the rotation 12 can also take place at the upper free end of the bending tab 6.

It is not shown that multiple twists can take place, namely a twist down, like it FIG. 4 shows, and a twist up, like it FIG. 5 shows.

Likewise, the invention is not limited to that the rotation 12 takes place in each case by 90 °. Other angles of rotation can also be generated. It is only important that the rotation takes place in order to allow an even better bond in the material of the precast plate 24, 26.

In order to achieve a further improvement of the composite, it may be provided in a development of the present invention, that edge-side incisions 13 are arranged on the edge sides of the tabs 13, which are open to the outside.

Likewise, it may be provided in a development that holes or recesses in the material of the bending tab 6 are arranged (not shown in the drawing).

Furthermore, it can be provided that according to FIG. 4 at the upper free end of the respective bending tab, a slot 14 is inserted, partially in the material extends into the bending tab and which is aligned in the direction of the longitudinal axis of the bending tab.

With an appropriate, suitable tool, the thus formed Spreizhälften 15 can be spread apart in the directions of arrows 16, so as to improve the effective width of the bending tab 6, which is to provide a composite in the precast panel 24, 26 crucial.

The Figures 5 and 6 show appropriate installation situations, with the detail after FIG. 5 in FIG. 9 is shown and the detail after FIG. 6 in FIG. 8 is shown.

The FIG. 5 shows that in the interior of the anchor rail 1, a profile sheet 21 can be inserted, which is formed in the embodiment shown as a U-profile.

This profile sheet 21 is adapted to receive a drill screw 22 which is screwed with a self-tapping thread in the material of the profile sheet 21. This drill screw, for example, fastened a sheet metal rail 23, which is part of the so-called cladding profile 28 (floor suitcase).

The FIG. 6 shows further details of the attachment of the trim profile 28. It can be seen that the sheet metal rail 23 is formed as a U-profile and is screwed onto the underside of the precast panels 24, 26.

The FIG. 5 shows in a conventional manner that in the prefabricated panels 24, 26 reinforcing rods 19, 20 are introduced and that the precast panels 24, 26 are formed entirely of concrete elements 18. It follows that the installation of such anchor rail 1 is not necessary to take place only in prefabricated panels 24, 26, but in any such anchor channels any concrete elements 18 can be introduced.

In FIG. 7 is a ceiling composite of 2 prefabricated panels 24, 26 shown in plan view. It can be seen that in one precast panel 24 the Anchor rails 1 protrude inward over a wide extent and protrude into a corridor 27 and beyond that beyond a parting line 25, the anchor rails 1 projecting from the other precast slab 26 protrude into the area of the parting line 27. The two opposing anchor channels 1 of the two flush mounted in the same plane precast panels 24, 26 thus meet in the region of the parting line 25th

In this area, the corridor of the future building is formed, and in this area - now that the anchor rails are relatively free there - can now the cladding profile 28 (floor suitcase) with the help of mounting options make the FIGS. 6 and 5 be attached. This is off FIG. 8 recognizable.

FIG. 8 shows, moreover, that in the corridor area still a support 29 is arranged, which penetrates the corridor area. Accordingly, it is important in the present invention that the anchor rails 1 are also formed to 2/3 of the material of the right precast panel 24 and 1/3 of the material of the precast panel 26, wherein these two prefabricated panels 24, 26 in the region of the parting line 25 meet and abut each other there.

It can be seen that the anchor rails 1 arranged in this area form a favorable attachment for elements to be arranged and suspended in the corridor 27, such elements being designed, for example, only as a trim profile 28. In the cladding profile 28 then the piping for the heater, power lines, ventilation ducts and the like can be performed.

Likewise, thanks to the favorable anchoring of the anchor rails 1 in the precast panels 24, 26 also very heavy objects are suspended from the anchor rails 1, such. As ventilation ducts, air conditioning and the like.

drawing Legend

1

anchor rail

2

U-profile

3

base leg

4

Side legs 4 '

5

Side legs 5 '

6

Bend tab 6 '

7

intersection

8th

bending edge

9

intermediate area

10

arrow

11

insulation strips

12

twisting

13

cuts

14

slot

15

Spreizhälfte

16

arrow

17

recess

18

concrete element

19

rebar

20

rebar

21

Profilblech

22

Bohrschraube

23

sheet-metal rail

24

Precast concrete slab

25

parting line

26

Precast concrete slab

27

Hall

28

trim profile

29

support

Claims (9)

Anchor rail (1) for concreting in concrete (18, 24, 26) with a semi-open profile (2) with legs (3-5), wherein at least one of the legs (3-5) anchoring elements (6) outwardly from the protrude half-open profile (2), characterized in that the anchoring elements (6) are integrally formed from the material of the anchor rail (1) even as bending tabs (6), which are connected only via bending edges (8) with the anchor rail (1). Anchor rail (1) according to claim 1, characterized in that the semi-open profile (2) of the anchor rail (1) is designed as U-profile (2), as a semicircular profile, as an elliptical profile, or as a polygonal profile. Anchor rail (1) according to claim 2, characterized in that the bending tab (6) in the base leg (3) of the U-profile (2) is provided. Anchor rail (1) according to one of claims 1 to 3, characterized in that in the semi-open profile (2) of the anchor rail (1) profile sheets (21) for fastening elements (22, 23) and / or insulating strips (11) are added. Anchor rail (1) according to one of claims 1 to 4, characterized in that the bending tab (6) is rotated by rotation (12) up to 360 °, in particular by 90 °, about its own longitudinal axis. An anchor rail (1) according to any one of claims 1 to 5, characterized in that the rotation (12) of the bending tab (6) is provided either in the region of the bending edge (8) or at the upper free end of the bending tab (6). An anchor rail (1) according to any one of claims 1 to 6, characterized in that the bending tab (6) is pierced. An anchor rail (1) according to any one of claims 1 to 7, characterized in that at the free upper end of the bending tab (6) in the direction of the longitudinal axis of the bending tab (8) extending slot (14) is provided, so that two spreader halves (15) are defined, which are spread apart. An anchor rail (1) according to any one of claim 8, characterized in that in the region of the expansion halves (15) borehole recesses or lateral incisions (13) are provided.

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