CN113882536A

CN113882536A - Anchor rail

Info

Publication number: CN113882536A
Application number: CN202110748985.6A
Authority: CN
Inventors: F·维特曼
Original assignee: Fischerwerke GmbH and Co KG
Current assignee: Fischerwerke GmbH and Co KG
Priority date: 2020-07-03
Filing date: 2021-07-02
Publication date: 2022-01-04
Also published as: EP3933133A1; DE102020117576A1

Abstract

The invention relates to an anchor rail (1) for casting concrete with concrete. An insert (2) made of a foam material is arranged in the receiving space (9), said insert preventing concrete from entering the receiving space (9) during the casting of the concrete. The insert (2) consists of a plurality of inserts (10) which are arranged side by side and clamped to one another in the receiving space (9). According to the invention, the insert (10) is shaped in such a way that the insert (2) is compressed to a lesser extent in the region close to the lower side (5) than in the region close to the upper side (4).

Description

Anchor rail

Technical Field

The invention relates to an anchor rail (Ankerschiene) having the features of the preamble of claim 1.

Background

An anchor rail of the type mentioned is known from the utility model DE 1906714U. The anchor rail has an interior receptacle space for receiving a hammer head fastening element, in which receptacle space an insert (Einlage) is arranged, which prevents concrete from entering the receptacle space when the anchor rail is concreted (Einbetonieren). The insert consists of three inserts, namely a middle part and two side parts, which are designed such that they fill the receiving space. The insert is made of hard plastic foam and is removed from the receiving space after the concrete casting. A disadvantage of the known anchor rail is that, when the insert is introduced into the receiving space, leaks can occur due to the multi-part construction of the insert, as a result of which concrete can penetrate into the receiving space.

Disclosure of Invention

The object of the present invention is therefore to provide an anchor rail with a multi-part insert which reliably prevents the penetration of concrete into the receiving space during the casting of concrete.

According to the invention, this object is achieved by an anchor rail having the features of claim 1. The anchor rail according to the invention is provided for concreting with concrete. For this purpose, the anchor rail has an anchoring element projecting on the underside for anchoring in the concrete. The anchoring elements can be designed, for example, in the form of headed bolts (kopfmolzen) and welded to the underside of the anchor rail. The anchor rail has a longitudinal slot on an upper side opposite the lower side, which longitudinal slot extends in the longitudinal direction of the anchor rail, in particular substantially over the entire length of the anchor rail. The longitudinal slot has a width which is smaller than its length and smaller than the width of the inner receiving space of the anchor rail. The longitudinal slot is designed in such a way that the hammer head element associated with the anchor rail is introduced into the receiving space via the longitudinal slot and can be engaged behind the upper side by rotation (hindegriff), as is typical for commercially available anchor rails. The upper and lower sides are connected by side walls so that they together with the side walls form the basic body of the anchor rail, which basic body has a C-shaped cross section typical for anchor rails. In the receiving space, an insert is arranged in the installed position, which prevents concrete from entering the receiving space during the concrete casting. For this purpose, the insert in the installed position fills the receiving space, in particular completely. The insert consists of a plurality of inserts of compressible material, which are arranged side by side and clamped to one another in the receiving space in the width direction. The use of a multi-piece insert has the following advantages: the inserts can be introduced into the receiving space and removed from the receiving space after the concrete has been cast in a simple manner, since the individual inserts can be introduced into the receiving space one after the other and moved into the desired position in the receiving space. The insert is preferably made of a foam material, in particular polyethylene. After the concrete casting, the insert can be removed completely or at least partially from the receiving space in such a way that the hammer head holder can be introduced into the receiving space and can be fixed in the cavity by rotation about the longitudinal axis of the hammer head holder.

It is characteristic for the anchor rail according to the invention that the insert is shaped in such a way that it is compressed to a lesser extent in the installed position, i.e. in the region close to the lower side than in the region close to the upper side when it is arranged in the receiving space as intended, in order to prevent concrete from penetrating into the receiving space when concrete is poured. In this case, all of the inserts or only a single one of the inserts can be compressed. In particular, the insert can be compressed to different degrees. In particular, the insert is designed such that the degree of compression increases from the lower side to the upper side, in particular continuously from the lower side to the upper side, i.e. from the lower side to the upper side. The compression takes place at least in the direction of the width and in particular also in the direction of the height of the insert, so that the insert is pressed firmly together in the region close to its upper side and against the upper side and the side walls of the base body, so that the receiving space is sealed against the penetration of concrete. Here, the direction from the lower side to the upper side is referred to as "height". By means of the compression of different strengths, on the one hand a good sealing action is achieved. On the other hand, the insert can be installed well and removed after the concrete casting.

The two inserts, after being introduced into the receiving space, i.e. in the installed position, rest against each other on a resting surface, preferably the resting surfaces of the two inserts are designed such that they do not extend parallel to each other outside the receiving space in the undamped state when they are arranged next to each other like in the installed position, but are not pressed against each other. The "unclamped state" refers to a state when no pressure is applied to the insert of the insert before the insert is introduced into the receiving space. This arrangement of the insert parts, which is similar to the installed position, side by side, but not clamped, is referred to below as the "reference position". Depending on the material used for the production of the inserts, these inserts, after removal from the receiving space, once again have substantially the shape they had before insertion into the receiving space. However, it is possible that the insert, after removal from its compressed receiving space, is initially also deformed and only after a certain time has taken on the shape it had in the undamped state before insertion into the receiving space.

In a preferred embodiment of the anchor rail according to the invention, the sum of the widths of the upper sides of the insert parts in the unclamped state is greater than the width of the upper side of the receiving space, i.e. the region of the receiving space adjoining the upper side of the base body. This design ensures that the insert is compressed in the width direction in the region close to the upper side after introduction into the receiving space.

It is furthermore preferred that the height of at least one of the inserts in the unclamped state is greater than the height of the receiving space, so that the insert is also compressed in the direction of the height after it has been introduced into the receiving space. In particular, the height of all inserts in the unclamped state is greater than the height of the receiving space. The height or width of the imaginary parallelepiped drawn into the accommodating space is referred to by the "height" or "width" of the accommodating space.

Preferably, the insert of the anchor rail according to the invention consists of at least one side part and at least one intermediate part, wherein the abutment surface of the intermediate part in the installed position slopes towards the side part in a direction from the lower side of the intermediate part to the upper side of the intermediate part. Such a tilting of the abutment face of the intermediate piece has proved to be advantageous when introducing the insert into the receiving space. In particular, the abutment surface of the intermediate piece is also inclined in the reference position from the lower side to the upper side towards the side piece.

Preferably, the insert consists of two side parts and an intermediate part, wherein the abutment surface of the intermediate part in the installed position is inclined in the direction from the lower side of the intermediate part to the upper side of the intermediate part toward the side parts. This is also the case in particular in the reference position.

Preferably, the intermediate piece has a trapezoidal shape, in particular an isosceles trapezoidal shape, in the installed position and/or in the reference position. In particular, the intermediate piece does not have a rectangular shape.

In a further preferred embodiment of the anchor rail according to the invention, the abutment surface of at least one of the side parts is inclined in the undamped state, i.e. in the reference position, in the direction from the lower side of the side part to the upper side of the side part, towards the intermediate part.

In particular, the insert comprises two side parts and an intermediate part, wherein the abutment surfaces of the side parts in the undamped state, i.e. in the reference position, are inclined in the direction from the lower side to the upper side of the respective side part towards the intermediate part.

However, the abutment surface of at least one of the side parts in the installed position is inclined in the direction from the upper side to the lower side of the side part towards the intermediate part. The shape of the at least one side part is preferably modified by the introduction of the intermediate piece into the receiving space in such a way that the contact surface of the respective side part is first inclined from the underside to the upper side, before the introduction of the intermediate piece into the receiving space, in the direction of the defined position of the intermediate piece in the receiving space. The contact surface of the side part is then deformed by the insertion of the intermediate part into the receiving space in a defined position in such a way that it is inclined from the upper side to the lower side toward the intermediate part inserted into the receiving space. In this case, the one or more side parts are thereby compressed and clamped in a sealing manner against the base body of the mounting rail by the deformation.

Preferably, at least one side part has a trapezoidal, in particular right-angled trapezoidal shape in the inserted position, in particular also in the reference position. In particular, the side pieces do not have a rectangular shape.

The features and feature combinations mentioned above in the description, the embodiments and the embodiments of the invention and the features and feature combinations mentioned below in the description of the figures and/or illustrated in the figures can be used not only in the respectively described or illustrated combination but also in substantially any other combination or in isolation. Embodiments of the invention are possible which do not have all the features of the dependent claims. Each feature of the claims can also be replaced by other disclosed features or combinations of features. Embodiments of the invention are possible which do not have all the features of the example described but rather have in principle any arbitrary portion of the characteristic features of the example described.

Drawings

The invention is explained in detail below with the aid of embodiments shown in the drawings. In which is shown:

figure 1 shows a cross-section of an anchor rail according to the invention in a sectional view without an insert;

fig. 2 shows a cross section of an insert of an anchor rail according to the invention in a reference position outside the receiving space of the anchor rail in a sectional view;

figure 3 shows in cross-section the anchor rail according to the invention at the beginning of the introduction of the insert;

figure 4 shows in cross-section the anchor rail according to the invention during the introduction of the insert; and is

Fig. 5 shows an anchor rail according to the invention in a sectional view with an insert in the installed position.

Detailed Description

In the figures of the drawings an anchor rail 1 according to the invention is shown. Fig. 1 shows a representation of the anchor rail 1 without the insert 2 shown in fig. 2. The anchor rail 1 consists of a C-shaped base body 3 with an upper side 4 and a lower side 5, which are connected by a side wall 6. On the underside 5, headed bolts are arranged as anchoring elements 7, with which the loads acting on the anchor rail 1 can be transmitted to a building made of concrete into which the anchor rail 1 is cast with concrete (not shown). The anchor rail 1 has a longitudinal slot 8 on its upper side 4, which extends in the longitudinal direction, here perpendicular to the plane of the drawing, and through which a hammer head element (not shown) can be introduced into the receiving space 9. The receiving space 9 has a width B_AThis width is greater than the width B of the longitudinal slot 8. The height H of the receiving space 9_ACorresponds to the height of the imaginary parallelepiped drawn into the receiving space 9 and thus in this case to the distance between the upper side 4 and the lower side 5.

In order to prevent the concrete from entering the receiving space 9 during the concreting of the anchor rail 1, into which the hammer head element is to be introduced after the concreting, the insert 2 is introduced into the anchor rail 1 according to the invention, as this is shown in fig. 5. The insert 2 consists of three inserts 10: a left side member 11, a middle member 12 and a right side member 13. The three inserts 10 are trapezoidal, wherein the intermediate piece 12 has a cross section in the reference position shown in fig. 2 having the shape of an isosceles trapezoid. As can be seen in fig. 5, the intermediate piece 12, even if compressed, substantially maintains this cross section at least in the receiving space 9 in the installed position, in which the insert part 10 is inserted into the receiving space 9 as intended. The two

side parts

11, 13 are mirror-symmetrical in the reference position of fig. 2 and have a cross section with the cross section of a right-angled trapezoid having two right-angled trapezoidsRight angle. As can be seen in fig. 2, the abutment surfaces 14, 15, 16 of the insert part 10, on which the

side parts

11, 13 abut against the intermediate part 12, extend outside the receiving space in the unclamped state, not parallel to one another, but opposite one another, as shown in fig. 2 as a reference position before the insert part 10 is introduced into the receiving space 9. In the reference position, i.e. in the unclamped state, the abutment surfaces 14, 16 of the two

side parts

11, 13 are inclined from the

lower sides

24, 26 to the

upper sides

21, 23 toward the intermediate part 12, and the abutment surface 15 of the intermediate part 12 is also inclined from the lower side to the upper side toward the

side parts

11, 13. The "lower side" and the "upper side" relate here to the installation position as can be seen in fig. 5 and the reference position relates to this installation position and the insert 10 is oriented in the reference position analogously to this installation position. Height H of said intermediate piece 12_MGreater than the height H of said

side members

11, 13_SL、H_SR. All three heights H of the insert 10_SL、H_M、H_SRGreater than the height H of the accommodation space 9_A. Furthermore, the width B of the

upper side

21, 22, 23 of the insert 10_SL、B_M、B_SRIs larger than the width B of the upper side of the receiving space 9_AWhich adjoins the upper side 4 of the base body 3. The insert 10 is constructed of a polyethylene foam material that is compressible and at least partially reversible.

In order to prevent concrete from penetrating into the receiving space 9 during the concrete casting process, the insert part 10 is arranged along the width B of the receiving space 9_AAre arranged side by side in the receiving space 9 and are clamped to each other so that the insert rests against its abutment surfaces 14, 15, 16, as is shown in fig. 3 to 5. For this purpose, the insert 10 of the insert 2 is introduced into the receiving space 9 through the longitudinal slot 8 in the orientation shown in fig. 2, first of all the two

side parts

11, 13 and then the intermediate part 12. In this case, the intermediate piece 12 is pressed between the two

side parts

11, 13 and, as shown in fig. 4, is upset (Stauchen)) The

side parts

11, 13 are thereby deformed in such a way that the abutment surfaces 14, 16 of the

side parts

11, 13 no longer incline from bottom to top, but now incline from the upper side 4 to the lower side 5 towards the middle part 12. While the abutment surface 15 of the intermediate piece 14 continues to slope from the lower side 5 to the upper side 4 in the insertion position shown in fig. 5, towards the

side pieces

11, 13. By deforming the

side parts

11, 13, the side parts and the intermediate part 12 are compressed to a greater extent in the region close to the upper side 4 than in the region close to the lower side 5. After the introduction of the intermediate piece 12, the foam material relaxes slightly again and the insert 10 bears flat against the inner wall of the base body 3 surrounding the receiving space 9, thereby preventing the concrete from penetrating during the casting of the concrete. Furthermore, the intermediate piece 12 has a greater height H due to its greater height H_MAnd completely fills the longitudinal seam 8, thereby further enhancing the sealing action.

After the concrete casting, the insert 2 can be removed from the receiving space 9, wherein first the intermediate piece 12 and then the

side pieces

11, 13 are removed, so that the hammer head holder can be introduced into the receiving space and can be fixed in the cavity by rotation about its longitudinal axis.

List of reference numerals

1 Anchor rail

2 insert

3 base body

4 upper side of base body 3 of anchor rail 1

5 lower side of base body 3 of anchor rail 1

6 side wall

7 anchoring element

8 longitudinal seam

9 accommodating space

10 insert

11 left side part

12 intermediate member

13 right side part

14 left side part 11 abutment surface

15 abutment surface of the intermediate piece 12

16 abutment surface of the right-hand part 13

21 upper side of left side member 11

22 upper side of the intermediate part 12

23 upper side of right side member 13

24 lower side of left side member 11

25 underside of intermediate part 12

26 lower side of right side member 13

B_AWidth of the accommodation space 9

Width of the B longitudinal slit 8

B_SLWidth of upper side 21 of left side member 11

B_MWidth of upper side 22 of intermediate member 12

B_SRWidth of upper side 23 of right side member 13

H_AHeight of the accommodation space 9

H_SLHeight of the left side member 11

H_MHeight of the intermediate member 12

H_SRHeight of the right side member 13.

Claims

1. Anchor rail (1) for concrete casting with concrete, having an anchoring element (7) protruding on a lower side (5) for anchoring in the concrete and having a longitudinal slot (8) on an upper side (4) opposite the lower side (5), which slot extends in the longitudinal direction of the anchor rail (1) and has a width (B) that is smaller than the length thereof and smaller than the width (B) of an inner receptacle space (9) of the anchor rail (1)_A) Wherein an insert (2) is arranged in the receiving space (9) in a loading position, said insert preventing the entry of concrete into the receiving space (9) during the casting of the concrete, wherein the insert (2) consists of a plurality of inserts (10) made of a compressible material, said inserts being arranged in the receiving space (9) along a width (B)_A) And wherein the insert (10) can be removed from the receiving space (9) after the concrete has been cast, so that a hammer head fixing element can be introduced into the receiving space(9) And can be fixed in the receiving space (9) by rotation about its longitudinal axis, characterized in that the insert (10) is shaped such that, in the installed position, the insert (2) is compressed to a lesser extent in the region close to the lower side (5) than in the region close to the upper side (4).

2. An anchor rail according to claim 1, characterized in that two inserts (10) abut against each other on abutment faces (14, 15, 16) after being introduced into the receiving space (9), the abutment faces (14, 15, 16) of the two inserts (10) being designed such that the abutment faces (14, 15, 16) do not extend parallel to each other outside the receiving space (9) in an undamped state when they are arranged side by side, similar to the installed position, but are not pressed against each other.

3. An anchor rail according to any one of the preceding claims, characterised in that the width (B) of the upper side (21, 22, 23) of the insert (10) in the unclamped state_SL、B_M、B_SR) Is greater than the width (B) of the upper side of the receiving space (9)_A）。

4. Anchor rail according to any one of the preceding claims, characterized in that the height (H) of at least one of the inserts (10)_SL、H_M、H_SR) In the unclamped state, is greater than the height (H) of the receiving space (9)_A）。

5. An anchor rail according to any one of the preceding claims, characterized in that the insert (2) consists of at least one side part (11, 13) and at least one intermediate piece (12), wherein the abutment surface (15) of the intermediate piece (12) in the installed position slopes from the lower side (25) to the upper side (22) towards the side part (11, 13).

6. An anchor rail according to any one of the preceding claims, characterised in that the insert (2) consists of two side parts (11, 13) and an intermediate piece (12), wherein the abutment surface (15) of the intermediate piece in the installed position slopes from the lower side (25) to the upper side (22) towards the side parts (11, 13).

7. An anchor rail according to claim 5 or claim 6, characterized in that the intermediate piece (12) has a trapezoidal shape, in particular an isosceles trapezoidal shape, in the installed position.

8. An anchor rail according to any one of claims 5-7, characterised in that the abutment surface (14, 16) of at least one of the side parts (11, 13) in the unclamped state slopes from the lower side (24, 26) to the upper side (21, 23) towards the intermediate piece (12).

9. An anchor rail according to any one of claims 5-8, characterised in that the abutment surface (14, 16) of at least one of the side parts (11, 13) slopes in the stowed position from the upper side (24, 26) to the lower side (21, 23) towards the intermediate piece (12).

10. An anchor rail according to any one of claims 5-9, characterised in that at least one side part (11, 13) has a trapezoidal shape in the installed position.