EP3259418B1 - Formwork having an add-on part - Google Patents

Description

The invention relates to a formwork for producing a body of in-situ concrete.
It is known to use heated formwork for casting a body of in-situ concrete, for example, for casting a concrete wall or a concrete column. The heated formwork allows the production of a body of in-situ concrete at low temperatures, especially in frost.
For example, it is from the DD 32 711 A3 become known, a heatable formwork element with an electrically heatable steam generating chamber for shuttering a to be produced Use concrete wall. The steam generating chamber is integrated into the shell element, ie, inseparably connected to the shell element. As a result, it is not possible to use the formwork element in warm weather without the steam generating chamber.

Furthermore, the disclosure DE 196 04 835 A1 a device for sealing duct walls. The device comprises an elastically expandable casing on which electric radiant heaters are arranged. The radiant heaters may be in the form of incandescent lamps. A disadvantage of this device, however, is that it must always be used together with the electric radiant heaters or transported and constructed.

From the DE 2 061 394 A a formwork for use in the processing of in-situ concrete has become known. The formwork comprises a formwork element with incorporated in the formwork element resistance heating wires. The resistance heating wires must also be transported and set up with the formwork element during operation in warm weather.

The CA 1 158 119 A discloses a portable heater for heating freshly cast bodies of in-situ concrete. In this case, a liquid is heated in the heater and guided in flexible tubes around the body. The heating of a formwork is from the CA 1 158 119 A not known.

Finally it is off the JP 2008095434 A become known to arrange an electric heater to a steel formwork by means of a magnetic connection reversibly detachable. The steel formwork can thus be used in hot weather operation without the electric heater. Due to the completely plate-shaped design of the heater and the flat magnetic connection of the known heater is relatively heavy, whereby the heater is expensive to transport. Furthermore, the magnetic connection between heater and steel formwork is difficult to solve FR 2253381 A5 and JP 2003293380 A disclose a formwork having a frame panel scarf element and a heating cassette.
In contrast, the invention is based on the problem of enabling the casting of a body of cast-in-situ concrete, both at high and at low outside temperatures, while at the same time allowing easy transport and easy handling of formwork.
Object of the present invention is therefore to provide a heating cassette, which is both easy to transport and easy to mount on a frame panel formwork element or dismountable from this.

This object is achieved by a formwork with the features of claim 1. The dependent claims indicate expedient developments.

According to the invention, the heating cassette can accordingly be reversibly detachably connected to the frame panel formwork element by means of a mechanical connection device. The heating cassette has a first part of the mechanical connection device and the frame panel formwork element has a second part of the mechanical connection device. Here is the second part of mechanical connection means used an element that already exists on the frame panel formwork element anyway. Thus, an already existing frame panel formwork element can be retrofitted with a heating cassette.

The mechanical connection device is preferably not based on a magnetic connection. The mechanical connection device is designed in particular non-magnetic.

The mechanical connection device can be designed in the form of a tongue and groove connection. Furthermore, the mechanical connection device may be designed in the form of a hook-and-eye connection. The first part of the mechanical connection device can be designed in the form of a first projection, which engages behind a second part of the mechanical connection device in the form of a second projection. The mechanical connection device allows a quick and easy mounting of the heating cassette on the frame panel formwork element and a quick and easy disassembly of the heating cassette from the frame panel formwork element. At the same time, the mechanical connection device leads to a continuous and reliable connection between the heating cassette and the frame panel formwork element. At high outside temperatures can be dispensed with the installation of the heating cassette. The transport and installation of the heating cassette thus only occur in the case of low temperatures or frost.

Particularly preferably, the first part of the mechanical connection device has a screw through-hole for receiving a screw of the frame panel sheath. Alternatively or additionally, the first part of the mechanical Connecting device preferably has a screw for fixing the heating cassette to a screw-through-hole of the frame panel formwork element. The screw is rotatably mounted on the heating cassette.
The weight of the heating cassette is further reduced and its handling facilitated when the heater has an electric heating element. The electric heating element may comprise a heating wire. The electrical heating element is preferably designed in the form of a heating mat. Particularly low weight and high stability of the heating element is achieved when the heating mat has interwoven heating wires.

The heating cassette preferably has a frame which leads to a structurally simple and easy construction of the heating cassette. Easy handling and low weight contribute significantly to the ease of assembly and disassembly as well as the transport of the formwork.
More preferably, the heating device is held in the frame via a spring element of the heating cassette. The heater can be stretched in the frame. As a result, the heater is easily formed and achieved a high efficiency of the tensioned heater.
In a particularly preferred embodiment of the invention, the frame has a rectangular basic shape. Several heating cassettes can be arranged side by side in this case simply and completely.

The frame is preferably made of metal, in particular made of steel. Furthermore, the frame may have a support strut. As a result, a high strength of the frame is achieved with low weight.

In a particularly preferred embodiment of the heating cassette, the frame-passage opening bounded by the frame is at least partially closed by insulation. Under the frame through-hole is understood to be limited by the frame opening of the frame. The insulation is preferably plate-shaped. The insulation may be formed for example in the form of a polystyrene plate. Preferably, the insulation is in the form of a polyurethane plate. The insulation increases the heat output of the heater to the formwork element.

The insulation is preferably arranged at a distance from the heating device. Particularly preferred is a first air gap between the insulation and the heater. More preferably, the frame is formed such that there is a second air gap between the heater and the - arranged on the heating cassette - formwork element.

The heating cassette may further comprise a plate in the region of the side facing away from the heater side of the insulation to protect the insulation. The plate is preferably in the form of a metal plate.

The heating cassette may have a projection and / or a recess for fastening an accessory, wherein the projection and / or the recess from an outer side of the heating cassette, in particular uncovered, accessible. The projection may be formed in the form of a strut. As an accessory, various additions or extensions, such as directional supports or concreting platforms can be provided. The heating cassette has deliberately no openings to attach an accessory directly to the frame panel formwork element, since such an opening would lead to heat loss.
Particularly preferably, the heating cassette has a shuttering anchor through-hole for carrying out a shuttering anchor. More preferably, the heating element in a peripheral region on a recess for receiving a buckle, to connect a plurality of the same frame panel formwork elements with heating elements together.
In a further preferred embodiment of the heating element, the heating element has a, in particular angle-shaped, support leg with a stop surface for the end face of the frame panel formwork element. The stop surface serves to align the heating cassette on the frame panel formwork element.

The formwork has a frame panel formwork member and a heater cassette arranged on the frame panel formwork member, and the frame panel formwork member has the second part of the mechanical connection means connected to the first part of the mechanical connection means on the heater cassette.

According to the invention, the second part of the mechanical connection device has a screw through-hole for receiving the first part of the mechanical connection device, which is preferably in the form of a screw and / or a screw for passing through the first part of the mechanical connection means in the form of a screw through-hole. The screw can be rotatably mounted on the frame panel formwork element.
The mechanical connection device can thus have a screw-through-hole on the heating cassette and a screw guided through the screw through-hole on the frame panel formwork element and / or the mechanical connection device can have a screw through-hole on the frame panel formwork element and a screw guided through the screw through-hole on the heating cassette ,
Particularly preferably, the heating cassette has a tab in which a tab through-hole is formed, which is aligned with a screw through-hole in a frame sheet formwork frame of the frame sheet scarf element.
The frame panel formwork element preferably has a passage opening for the passage of a formwork anchor, which is flush with the formwork anchor passage recess of the heating cassette. The passage recess is formed in particular perpendicular to a formwork skin of the frame panel formwork element.
The formwork can have a voltage source arranged in a housing, wherein the housing is reversibly detachably connected to the heating cassette. The voltage source preferably has a plurality of electrical outputs for supplying a plurality of heating cassettes. The voltage source can be designed in the form of a terminal box be. The formwork may further include a controller for controlling or regulating the temperature of the heating element. The controller may be disposed in the housing. Particularly preferably, a central control for a plurality of heating cassettes is arranged in the housing.

Further features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention, with reference to the figures of the drawing, the invention essential details shows and from the claims.

The features shown in the invention are shown such that the features of the invention can be made clearly visible. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention.

Fig. 1

eine perspektivische Draufsicht auf eine Heizkassette;

Fig. 2

eine Unteransicht der Heizkassette aus Fig. 1;

Fig. 3

eine perspektivische Ansicht eines Rahmentafelschalelements;

Fig. 4

eine perspektivische Ansicht des Aufsetzens der Heizkassette gemäß den Fign. 1 und 2 auf das Rahmentafelschalelement gemäß Fig. 3;

Fig. 5

eine perspektivische Ansicht einer Schalung mit der gemäß Fig. 3 auf das Rahmentafelschalelement aufgesetzten Heizkassette;

Fig. 6

eine perspektivische Ansicht eines Details der Montage der Schalung gemäß Fig. 5;

Fig. 7

eine perspektivische Ansicht der Schalung gemäß Fig. 6 mit angehängten Kranseilen zum Aufrichten der Schalung;

Fig. 8

eine perspektivische Ansicht der aufgerichteten Schalung gemäß Fig. 7 mit einer in einem Gehäuse angeordneten Spannungsquelle;

Fig. 9

eine Seitenansicht der Schalung gemäß Fig. 8; und

Fig. 10

eine perspektivische Ansicht mehrerer zum Schalen einer Mauer gegenüber gestellten Schalungen gemäß den Fign. 8 und 9.

Show it:

Fig. 1

a top perspective view of a heating cartridge;

Fig. 2

a bottom view of the heating cassette Fig. 1 ;

Fig. 3

a perspective view of a frame panel scarf element;

Fig. 4

a perspective view of the placement of the heating cassette according to the FIGS. 1 and 2 on the frame panel scarf element according to Fig. 3 ;

Fig. 5

a perspective view of a formwork with the according to Fig. 3 placed on the frame panel scarf element heating cassette;

Fig. 6

a perspective view of a detail of the assembly of the formwork according to Fig. 5 ;

Fig. 7

a perspective view of the formwork according to Fig. 6 with attached crane ropes for erecting the formwork;

Fig. 8

a perspective view of the erected formwork according to Fig. 7 with a voltage source arranged in a housing;

Fig. 9

a side view of the formwork according to Fig. 8 ; and

Fig. 10

a perspective view of several facing the shells of a wall facing formwork according to the FIGS. 8th and 9 ,

Fig. 1 shows a heating cassette 10. The heating cassette 10 has a square frame 12 in the form of a metal frame, which is the "supporting frame" of the heating cassette 10. Through the frame 12, the heating cartridge 10 is particularly easy and easy to transport. To protect the heating cartridge 10 this is covered with several plates 14 , of which for reasons of clarity in Fig. 1 only one of the plates 14 is provided with a reference numeral. The plates 14 are preferably made of metal, in particular of zinc sheet.

Fig. 2 shows the heating cartridge 10 in a compared to Fig. 1 opposite view. Out Fig. 2 It can be seen that the frame 12 for further stabilization support struts 16 , of which for reasons of clarity in Fig. 2 only one of the support struts 16 is provided with a reference numeral. The support struts 16 are preferably formed of metal.

In the frame 12, a heater 18 is stretched in the form of several heating elements. The heating elements are designed in the form of heating mats. The heating mats have a cloth-like pad on which at least one heating wire is arranged. The heating elements are indirectly by spring elements 20 - in particular via support struts 16 - or stretched directly into the frame 12. For clarity, is in Fig. 2 only one of the spring elements 20 provided with a reference numeral.

Fig. 3 shows a frame panel scarf element 22. The frame panel scarf element 22 has a frame panel formwork frame 24 . The frame panel formwork frame 24 is rectangular in shape and has the same width B and height H as the frame 12 (see FIG Fig. 1 ) on. The frame 12 (see Fig. 1 ) can therefore be placed flush on the frame panel formwork frame 24.

The frame panel formwork element 22 has formwork support struts, of which for reasons of clarity in Fig. 3 only two longitudinally extending formwork support struts 26a (longitudinal struts) and two transverse formwork support struts 26b (cross struts) are provided with a reference numeral. The formwork support struts 26a, 26b are - as well as the Frame formwork frame 24 - formed of metal and stiffen the frame panel formwork frame 24. Furthermore, the formwork support struts 26a, 26b of the support of a formwork skin 28. The formwork skin 28 preferably has a coated formwork skin body made of wood and / or plastic. Particularly preferably, the formwork skin 28 is formed from non-magnetic materials in order to keep the weight of the frame panel formwork element 22 low.

The formwork support struts 26a, 26b have through holes 30 for respectively passing a formwork anchor (not shown).

In warm weather, the frame panel scarf element 22 without the heating cartridge 10 (see Fig. 1 ) are used.

Fig. 4 shows the placement of the heating cartridge 10 on the frame panel scarf element 22. The heating cassette 10 has for connection to the frame panel scarf element 22 on a first part 32 of a mechanical connection device 34 . The first part 32 has tabs 36 in which tab passages 38 are formed. The frame panel formwork element 22 has a second part 40 of the mechanical connection device 34. The second part 40 has screw-through recesses 42 , which are aligned in the mounted state of the heating cartridge 10 on the frame panel scarf element 22 with the tab through-holes 38. Fig. 4 shows only a part of the mechanical connection device 34. Further tabs and through holes are on the in Fig. 4 opposite side of the heating element 10 and the frame panel formwork element 22 is provided.

Fig. 5 shows a formwork 44 with the mounted on the frame panel scarf element 22 Heizkassette 10. Off Fig. 5 It can be seen that the heating cassette 10 has a support leg 46 . The support foot 46 provides a stop surface 48 for the installation of the frame sheet formwork frame 24 (see. Fig. 4 ). The support foot 46 is preferably formed of metal and firmly connected to the frame 12 of the heating cartridge 10. The support leg 46 has Stützfußdurchgangsausnehmungen 50 for mounting the heating cartridge 10 on the frame panel scarf element 22. The support foot passage recesses 50 are the first part 32 of the mechanical connection means 34 (see Fig. 4 ). To facilitate the assembly of the formwork 44, this is placed on wooden beams 52 . When arranging a plurality of formworks 44 one above the other, a support foot is provided only at the / the lowest formwork (s), which stands up / stand on the ground. In contrast, a heating cassette arranged above the lowest formwork does not have a support foot.

Fig. 6 shows the formwork 44 in the locking of the heating cassette 10 on the frame panel formwork element 22. For this purpose, the formwork 44 screws 54 . The screws 54 are respectively defined by the support leg passage recess 50 and the screw passage recess 42 and the tab passage recess 38 (see FIG Fig. 4 ) guided. The screws 54 are a part of the first part 32 of the mechanical connection device 34 (see Fig. 4 ). The mechanical fastening of the heating cassette 10 on the frame panel formwork element 22 takes place in the region of all four corners of the frame 12 pointing outwards in the frame main plane.

Fig. 7 shows the formwork 44 with fixed to the heating cartridge 10 straightening supports 56. Furthermore, a concreting platform 58 is attached to the heating cassette 10.

Fig. 8 shows the formwork 44 according to Fig. 7 in erect condition. Out Fig. 8 It can be seen that the heating cartridge 10 has formwork anchor passage recesses 60 . The formwork anchor passage recesses 60 are aligned with the passage recesses 30 (see Fig. 3 ).

Furthermore, it is off Fig. 8 It can be seen that the heating cassette has 10 recesses 62 , of which for reasons of clarity in Fig. 8 only one recess 62 is provided with a reference numeral. The recesses 62 are each used to attach a buckle (not shown) for connecting a plurality of formwork 44. The formwork 44 further has projections 64 , of which for reasons of clarity in Fig. 8 only a projection 64 is provided with a reference numeral. The projections 64 are used to attach further formwork parts (not shown).

Fig. 9 shows the formwork 44 according to Fig. 8 in a side view. Out Fig. 9 It can be seen that the heating cartridge 10 is supported in the assembled and erected state at the bottom by the support leg 46.

In Fig. 9 is the frame 12 (cf. Fig. 1 ) of the heating cartridge 10 is not shown to illustrate the structure of the heating cartridge 10. Out Fig. 9 is thereby seen that in the assembled state of the formwork 44, the heater 18 between an insulation 66 and the frame sheet formwork frame 24 is arranged. The heater 18 runs parallel to the insulation 66. The insulation 66 is preferably formed in the form of a polyurethane plate.
Fig. 10 shows an arrangement of several, facing formwork 44. Schalschlösser for connecting the formwork 44 are in Fig. 10 not shown. Out Fig. 10 It can be seen that a formwork 44 has a housing 68 containing a power supply (not visible). The housing 68 is reversibly releasably attached to the heating cartridge 10, in particular attached. The power supply preferably has a terminal box to which a plurality of cables 70 are connected or connected such that the power supply can supply a plurality of heating cassettes 10 with voltage. In the Fig. 10 shown cables 70 feed voltage inputs 72 of the heating cassettes 10. To protect the housing 68, the heating cassette 10 has a roof 74 . On each wall side to be concreted a housing with a power supply is provided.

In summary, the invention relates to a formwork which has a frame panel formwork element with a formwork skin and a heating cassette arranged on the frame panel formwork element. The heating cassette has a heating device and is mechanically connectable to the frame panel formwork element. The mechanical connection device comprises a first part arranged or formed on the heating cassette and a second part arranged or formed on the frame panel formwork element. The mechanical connection device can be designed in particular in the form of a screw connection, a tongue-and-groove connection, a hook-and-loop connection, a tension connection or a splined connection. The heating cassette preferably has a frame, in whose frame through-passage the heating device is at least partially is arranged. The first part of the mechanical connection device is particularly preferably arranged or formed on the frame.

Claims (10)

1. Formwork (44) for producing a body from cast-in-place concrete, wherein the formwork (44) comprises a frame-panel formwork element (22) having a form lining (28) and a heating cartridge (10) arranged on the frame-panel formwork element (22), wherein the heating cartridge (10) is reversibly detachably connected to the frame-panel formwork element (22) and comprises a heating means (18) for generating heat, wherein the heating cartridge (10) comprises a first part (32) of a mechanical connection means (34) for mounting the heating cartridge (10) on the frame-panel formwork element (22) and wherein the frame-panel formwork element (22) comprises a second part (40) of the mechanical connection means (34), which part is connected to the first part (32) of the mechanical connection means (34) on the heating cartridge (10), wherein the second part (40) of the mechanical connection means (34) comprises a screw through-recess (42).
2. Formwork according to claim 1, wherein the first part (32) of the mechanical connection means (34) comprises a screw (54).
3. Formwork according to either claim 1 or claim 2, wherein the heating means (18) comprises an electrical heating element, in particular in the form of a heating mat.
4. Formwork according to any of the preceding claims, wherein the heating cartridge (10) comprises a frame (12) in which the heating means (18) is arranged.
5. Formwork according to claim 4, wherein the heating means (18) is held in the frame (12) by means of a spring element (20) of the heating cartridge (10).
6. Formwork according to either claim 4 or claim 5, wherein the frame (12) has a rectangular basic shape.
7. Formwork according to any of the preceding claims, wherein the heating cartridge (10), in particular the frame through-recess defined by the frame (12), is clad by insulation (66) of the heating cartridge (10), at least in part.
8. Formwork according to claim 7, wherein the heating cartridge (10) comprises a plate (14) which is arranged on the side of the insulation (66) on the heating cartridge (10) that faces away from the heating means (18) in order to protect the insulation (66).
9. Formwork according to any of the preceding claims, wherein the heating cartridge (10) comprises a projection (64) and/or a recess (62) for fastening a formwork part, the projection (64) and/or the recess (62) being accessible from an outer face of the heating cartridge (10).
10. Formwork according to claim 3, wherein the formwork (44) comprises a voltage source arranged in a housing (68), the housing (68) being reversibly detachably connected to the heating cartridge (10).

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