DE202023103640U1 - Formwork panel reinforcement and formwork system - Google Patents

Abstract

Formwork panel reinforcement (2, 2', 2''), in particular for use in a formwork system for the erection of low construction sections made of concrete, the formwork panel reinforcement (2, 2', 2'') having at least one formwork panel (10, 10', 10 '') can be connected, preferably as part of an assembled reinforcement frame (3, 3') for the at least one formwork panel (10, 10', 10''), characterized in that the formwork panel reinforcement (2, 2', 2'') has at least one profile made of coextruded plastic or itself consists at least partially of such a profile.

Description

The present invention relates to a formwork panel reinforcement for stiffening a formwork panel, such as from CN202493025U known. Traditionally, formwork frames are used for stiffening, cf. EP 88713 B1 or DE 10 2016 111 211 A1 .

There is still a need for more sustainable materials in formwork technology. Too often, impregnated wood is not used more than once, which serves as a frame construction to reinforce formwork panels.

This object is achieved according to the invention with the subject matter of the independent claims.

Advantageous embodiments are specified in the subclaims, which can also be taken from the drawings of the figures and the following description. The content of the claims and the following list of figures should be considered part of the description of the invention.

• 1.1 - eine perspektivische Darstellung mit blick von schräg hinten auf ein Schalungselement, das mittels eines ersten Ausführungsbeispiels erfindungsgemäßer Schalungsplattenverstärkungen umrandet ist,
• 1.2 - eine weitere perspektivische Darstellung des Schalungselements aus 1.1, mit Blick von schräg vorne auf die Betonseite einer Schalungsplatte,
• 2.1 - einen Schnitt durch ein zweites Ausführungsbeispiel einer erfindungsgemäßen Schalungsplattenverstärkung,
• 2.2 - einen weiteren Schnitt durch die Schalungsplattenverstärkung aus 2.1 mit befestigter Schalungsplatte (nur teilweise dargestellt),
• 3.1 - einen schematisch dargestellten Schnitt durch ein drittes Ausführungsbeispiel einer erfindungsgemäßen Schalungsplattenverstärkung, die betonseitig (innen) an einer vertikal ausgerichteten Schalungsplatte und außen an einem Stützbock befestigt ist,
• 3.2 - einen schematisch dargestellten Schnitt durch ein weiteres Schalungselement mit einer in Vertiefungen besonders bevorzugter Schalungsplattenverstärkungen eingreifende Blechkonstruktion zur indirekten Befestigung der Schalungsplattenverstärkung mit einem nur teilweise dargestellten Stützbock,
• 3.3 - eine perspektivische Darstellung der Blechkonstruktion aus 3.2, ebenfalls erkennbar in 1.1,
• 4.1 - einen Schnitt durch zwei umklammerte Schalungsplattenversteifungen entlang einer horizontal verlaufenden Schraubachse,
• 4.2 - einen Schnitt analog zu 4.1, wobei in diesem Fall verbundene Schalungsplattenversteifungen gemäß eines weiteren vorteilhaften Ausführungsbeispiels von einer Binnenschraubachse durchdrungen dargestellt sind, und
• 5.1 bis 5.8 - Schnitte zur Darstellung einer bevorzugten Fertigung der Schalungsplattenversteifung aus 2.2.

The figures show:

• 1.1 - a perspective view with an oblique view from behind of a formwork element which is bordered by means of a first exemplary embodiment of formwork panel reinforcements according to the invention,
• 1.2 - Another perspective view of the formwork element 1.1 , with an oblique view from the front onto the concrete side of a formwork panel,
• 2.1 - A section through a second embodiment of a formwork panel reinforcement according to the invention,
• 2.2 - make another cut through the formwork panel reinforcement 2.1 with attached formwork panel (only partially shown),
• 3.1 - a diagrammatically illustrated section through a third exemplary embodiment of a formwork panel reinforcement according to the invention, which is fastened on the concrete side (inside) to a vertically aligned formwork panel and on the outside to a trestle,
• 3.2 - a diagrammatically illustrated section through a further formwork element with a sheet metal construction engaging in recesses of particularly preferred formwork panel reinforcements for indirect fastening of the formwork panel reinforcement with a trestle only partially shown,
• 3.3 - a perspective view of the sheet metal construction 3.2 , also recognizable in 1.1 ,
• 4.1 - a section through two clasped formwork panel stiffeners along a horizontal screw axis,
• 4.2 - a cut analogous to 4.1 , wherein in this case connected formwork panel stiffeners are shown penetrated by an internal screw axis according to a further advantageous embodiment, and
• 5.1 until 5.8 - Sections to show a preferred production of the formwork panel reinforcement 2.2 .

The same reference numerals used in the figures are often reused across the different exemplary embodiments for identifying similar features, which should not constitute any contradiction. It is used for better comparability.

The 1.1 and 1.2 show a formwork panel reinforcement 2 ', which are mitered together as a circumferential solid reinforcement frame 3', for example glued. 1.2 shows the resulting formwork element from the concrete side 14` (=inside). In order to create a special impression of the formwork elements arranged in a row after concreting, the edges of the formwork panel 10` used in this particularly preferred embodiment are bevelled all the way around, until the stiffening frame 3' is mitred and ends flush with a circumferential edge Formwork panel reinforcements 2 'is reached. They are preferably glued or screwed flush to the outside of the formwork panel 10'.

Short vertical formwork panel stiffeners 2' each have a vertical oval hole 22.V' in the center with a horizontal central axis, through which side connectors can run along this central axis, for example non-rotatable and yet with sufficient play to prevent tilting. The oval holes 22.V' are a simple and inexpensive way of connecting the formwork elements to one another by means of a threaded rod with a counter plate and a flange nut on the opposite side, cf. 4.2 . The vertical oval hole 22.V`, which also includes a matching oval tube, allows small differences in height in the support of the formwork element to be compensated for. A layer of gravel that has been shaken off and often has certain bumps can be used as a support.

Additionally or alternatively, according to advantageous embodiments--the "additional" variant is shown--at least one horizontal oval hole 22.H' is arranged in the formwork panel reinforcements 2' bordering horizontally at the top and bottom. This gives you the additional option of attaching various add-on items, such as heightening profiles, stacking brackets, warning signs or just squared timber. They can be viewed and used as functional holes.

On the back 12', or also to be referred to as “outside”, in the particularly preferred embodiment shown, two strut elements each running vertically are inserted into a sheet metal construction, cf. 3.3 . On the rear side 12' of the formwork panel 10' there is an insert plate 26' for each strut element, from which a central bracket 24.M' can be folded out in the middle. It is in such an unfolded position in the 1.1 and 3.3 recognizable. Its free end reaches a pair of vertical struts 28' on the outside, shown as narrow flat bars in this preferred embodiment shown. The unfolded middle straps 24.M serve to stabilize and fasten the flat iron. End tabs 24.E` are arranged at the top and bottom for the spaced insertion of the flat bars into the stiffening frame 3', wherein according to the illustrated advantageous embodiment the insert plate 26` engages at the top and bottom with a pair of lugs 29` between the formwork panel and the formwork panel reinforcement.

In the case of support by means of a support frame 30, these strut elements simulate 3.1 represents a hook profile for the hook head screw 32 in the support frame 30.

The 2.1 and 2.2 show a foam profile from which the formwork panel reinforcement 2 is preferably made. After 2.2 a formwork panel 10 is screwed into the foam profile. These is according to this preferred embodiment in a manufacturing process according to the schematic sectional sketches of 5.1 until 5.8 an initially cylindrical recess 21 introduced into the profile. Alternatively (not shown), the profile has a corresponding longitudinal groove formed therein to save the bore.

A slot 22 running parallel to the shuttering panel 10 and running parallel to the formwork panel 10 is milled into the recess 21 or the groove (not shown as an alternative) and is used for the use of a preferably oval small steel plate 25 as a screw receptacle. In the present case, a steel rivet 23 is seated in the steel plate 25 as a fastening means. The formwork panel 10 can be firmly connected to the frame profile of the stiffening frame 3 due to the resistance of the steel plate 25 in the foam profile. In addition, the formwork panel 10 can be replaced at any time by removing the steel rivet 23 .

Due to the production process, the foam profiles are slightly conical. When screwing two adjacent formwork reinforcements 3, cf. 4.1 , there is a small gap 92 in between. A 9.U wrap-around clamp is suitable for screwing. Alternatively, the comes in 4.2 reach-through clamp 9.D'' shown is used. The gap 92 is helpful when compressing through the formwork lock 9, because the material of the formwork panel reinforcement 2, 2', 2'' allows the formwork panel 10, 10', 10'' facing and on the back 12 automatically a higher compressive stress on the around the gap acts as a contact surface formed as a pressing edge, which increases the tightness at the relevant points.

The processing method in the pairs of figures 5.1 / 5.5, 5.2 / 5.6, 5.3, 5.7 and 5.4 / 5.8, which preferably runs in four steps from left to right, shows how well thought-out the usability of the foam profile material, which is not really an option, is achieved in formwork construction . A direct bonding of the formwork panel 10 to the formwork reinforcement 2 also appears possible, but involves the risk that greatly different material expansions of the formwork elements in the bonded joints lead to excessive stresses. Screwing directly into the foam of the formwork panel reinforcement 2 did not promise a sufficient longevity, at least initially. Even firmly embedding an anchor, which can be reached from the outside in the foam material, alone did not lead to the production sequence shown in these sketches.

The two drawings on the left show that the horizontal slot 22 that can be seen in 5.7 only partially extends into the foam profile. In the far right drawing 5.8, the small plate 25 screwed into the slot 22 up to a stop is shown. above, in 5.4 can be seen how it is inserted into the recess 21 designed as a bore. down in 5.8 it is turned in the horizontal slot so that it engages in the hatched area 22 in the foam profile. Only the pressure surface on the foam profile, shown hatched, absorbs the tensile force of the steel rivet 23.

Reference List

1

surface

10, 10', 10''

formwork panel

12, 12'

back, outside

14, 14'

concrete side, inside

2, 2', 2''

formwork panel stiffening

21

Recess, in particular bore

22

slot

22.H, 22.H'

Horizontal oval hole

22.V'

Vertical oval hole

23

Fastening element, in particular steel rivets

24.E'

end tab

24.M, 24.M'

center tab

25

steel sheets

26'

insert sheet

28'

vertical brace

29'

Nose

3, 3`

stiffening frame

30

supporting frame

32

hook head screw

4

stringers

5

transom

9

assembly lock

9.D''

reach-through clamp

9.U

wrap-around clamp

92

gap

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• CN 202493025 U [0001]
• DE 102016111211 A1 [0001]

Claims (6)

Formwork panel reinforcement (2, 2', 2''), in particular for use in a formwork system for the erection of low construction sections made of concrete, the formwork panel reinforcement (2, 2', 2'') having at least one formwork panel (10, 10', 10 '') can be connected, preferably as part of an assembled reinforcement frame (3, 3') for the at least one formwork panel (10, 10', 10''), characterized in that the formwork panel reinforcement (2, 2', 2'') has at least one profile made of coextruded plastic or itself consists at least partially of such a profile. Formwork panel reinforcement (2, 2', 2'') according to claim 1 , characterized in that several profiles made of the co-extruded plastic are screwed together like a framework with longitudinal and transverse beams (4, 5) to form the reinforcement frame (3, 3'). Formwork panel reinforcement (2, 2', 2'') according to one of the preceding claims, characterized in that a recess (21) is formed in the profile from coextruded plastic, in which a steel plate (25) fits positively, in particular on three sides with a single remaining degree of freedom, and that a fastening element (23) can be screwed into the small steel plate (25) or anchored to the small steel plate (25) through the recess (21) in order to fix the formwork panel (10) to the formwork panel reinforcement (2, 2', 2'') to attach. Formwork system, in particular for the erection of low construction sections made of concrete, with a formwork panel reinforcement (2, 2', 2") according to one of the preceding claims. Sheet metal construction consisting of an insert sheet (26') that can be inserted into a formwork panel reinforcement and at least one vertical strut (28') inserted into a horizontally foldable middle bracket (24.M) and its use in a formwork element for connection to a supporting frame (30) positioned away from the concrete. . Use of a window frame production line for the manufacture of formwork panel stiffeners according to one of Claims 1 until 3 .

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