AU2018205667A1

AU2018205667A1 - Formwork device

Info

Publication number: AU2018205667A1
Application number: AU2018205667A
Authority: AU
Inventors: Ingo Heesemann; Felix Von Limburg
Original assignee: Umdasch Group NewCon GmbH
Current assignee: Umdasch Group NewCon GmbH
Priority date: 2017-01-05
Filing date: 2018-01-05
Publication date: 2019-08-22
Anticipated expiration: 2038-01-05
Also published as: JOP20190139A1; EP3565692A1; JOP20190139B1; AU2018205667B2; BR112019013960A2; PH12019501578A1; EP3565692B1; WO2018127553A1; ZA201904057B; DE102017200118A1; CL2019001869A1; MY194086A; AR110811A1; BR112019013960B1; CO2019007250A2; PE20191438A1

Abstract

The aim of the invention is to improve a conventional formwork device. According to the invention, a formwork device is provided for producing components, in particular precast concrete parts, wherein the formwork device has two formwork panels which can be hinged together preferably in a releasable manner in order to be converted from an unfolded state into a folded state. Each formwork panel has a formwork front face and a formwork rear face, and the formwork rear faces of the two formwork panels face each other in the folded state. A formwork chamber which can preferably be closed by a cover is provided at least on one of the formwork front faces for filling with a fluid that can be hardened, preferably concrete. The invention additionally relates to a method for producing a precast concrete part using a formwork device according to the invention.

Description

FORMWORK DEVICE

The invention relates to a formwork device for producing building components, in particular precast concrete parts, wherein the formwork device comprises two formwork panels which can be hinged together preferably in a releasable manner in order to be transferred from an unfolded state into a folded state, wherein each formwork panel comprises a formwork front face and a formwork rear face, and the formwork rear faces of the two formwork panels face each other in the folded state. Furthermore, the invention relates to a method for producing a precast concrete part using a formwork device according to the invention.

Such formwork devices are known for example from DE 10 2015 209 157. They are used in so-called battery formworks. In the unfolded state, the formwork device can be provided with reinforcement mats, formwork walls and suchlike. In the folded state, the formwork device is inserted into the battery formwork. A plurality of formwork devices are arranged in the battery formwork. To produce the precast concrete parts, the formwork devices are braced against one another in the battery formwork and filled with concrete. After the hardening of the concrete, the bracing is released and the finished precast concrete parts are removed with the formwork devices of the battery formwork.

Such battery formworks have proved to be extremely efficient in the production of precast concrete parts. Nonetheless, it would be desirable for the formwork devices to be able to be used universally.

According to the invention, the problem is solved in that a formwork chamber which can preferably be closed by a cover is provided at least on one of the formwork front faces for filling with a fluid that can be hardened, preferably concrete.

It is thus possible to use the formwork device independently. It is thus possible to close the formwork chamber with a cover in order thus to form a formwork volume. The formwork device can thus be used alone without further formwork devices or without insertion into a battery formwork.

By means of the formwork device according to the invention, it is possible to operate an on-site (concrete) factory and to transport the concrete parts after the formwork has been stripped or to transport the concrete parts in the formwork device.

Especially during transport through rough terrain, the formwork device protects the concrete element against damage during transport. A further advantage lies in the erection of the finished concrete element on the building site with the formwork device according to the invention. Since the concrete element can be erected together with the formwork device as soon as the concrete has sufficient flexural strength, a considerable time advantage results. The concrete element does not - as is usually the case on the building site - have to be erected directly from the ground using a crane. Less reinforcement in the building part is therefore also required. In addition, the risk of the anchors and suchlike tearing out is reduced. The formwork device according to the invention thus functions as a mobile tilting table. The formwork device according to the invention is placed on a flat surface, prepared with reinforcement, built-in components etc, and concreted in the lying position. Once the early strength of the concrete is reached, the formwork device is transferred into the folded state, and can be hung elsewhere, stacked one upon the other or placed elsewhere. The transfer of the formwork device from the unfolded into the folded state can take place for example hydraulically, so that a crane is not required for his process.

Especially in the construction of high-rise buildings, the solution according to the invention proves to be advantageous on account of the space-saving and the ability to be used universally.

In a preferred embodiment, the formwork chamber can comprise a formwork wall, which projects with respect to the formwork front face. This formwork chamber can be formed in different ways. In a preferred embodiment, it is conceivable to constitute the formwork wall in one piece with the formwork front face. Alternatively, it is conceivable to form the formwork wall for example by means of removable formwork elements. These may be for example formwork magnets, or the formwork wall can be formed by formwork magnets, or can be held by formwork magnets to the formwork front face. When the formwork wall is constituted in one piece, it can be a component part of the formwork panel. In a preferred embodiment, this can take place for example by means of a completely circumferential border of the formwork front face. It would also be feasible, for larger numbers of precast concrete parts to be produced, for the formwork wall to be adapted to the precast concrete part to be produced.

The formwork device according to the invention can be operated independently on a building site, for example using a standard assembly crane.

In an advantageous embodiment, the formwork wall can form a closed line. A closed lateral boundary of a precast concrete part can thus be created, which can be closed by a cover in order to form the formwork chamber.

In a further advantageous embodiment of the invention, the formwork wall can comprise a preferably closeable opening for the filling with the fluid that can be hardened. When such an opening is provided, the filling of the formwork chamber can take place in the folded state of the formwork device. It may be advantageous if the opening is facing the hinge. The filling can then take place from above in the folded state.

In an alternative embodiment of the invention, the opening can be provided in the cover or can be closed by the cover.

Especially when the opening can filling with concrete can take place be closed by without a the cover, the cover and the formwork chamber can then be closed by the cover. Any air inclusions can thus be prevented.

In an advantageous development of can be fastened at least indirectly the to invention, the cover the formwork panel, conceivable for the cover panel or for example to preferably in a releasable manner. It is to be fastened directly to the formwork the formwork wall. Since great forces arise during concreting, it is however preferable for the cover to be fastened to the formwork panel.

Fastening means can advantageously be provided for connecting the cover to the formwork panel and/or the formwork wall, preferably in a releasable manner. If the cover can be fastened in a releasable manner, it can be reused. The production costs can be reduced by the use of fastening means. The cover can be constituted as a relatively simple rectangular plate, which in its basic shape corresponds to a formwork panel and can then be connected thereto by means of the fastening means.

It may be advantageous if the fastening means comprise at least one clamping device. Such a clamping device can for example be a quick-action fastener or a simple nut and bolt connection.

In order to facilitate the mounting of the cover, or to ensure the operational reliability, it may be advantageous if a guide device for the cover is provided between the formwork panel and/or the formwork wall. Such a guide device can have many designs. The cover is positioned with respect to the formwork panel and/or the formwork wall by the engagement of tongues and grooves into one another.

In a further advantageous embodiment of the invention, a safety device can be provided, with which the formwork panels in the folded state can be secured against unfolding. By means of such a safety device, it is possible to use a formwork device alone. In the folded state, the safety device prevents unfolding of the formwork panels. Hardening of the concrete in the folded state can thus be ensured. The formwork device is particularly space-saving in the folded state. For example, a plurality of formwork devices can be placed loose beside one another in order thus to be able to produce a plurality of precast concrete parts on a comparatively small space.

In an advantageous development of the invention, the safety device can be provided between the formwork panels and be constituted as a connection device, in order to connect the two formwork panels together at least in the folded state. Such a safety device can be implemented particularly easily.

In an advantageous development, the connection device can be constituted flexible or articulated, preferably as a chain or rope. A simple chain is on the one hand very stable and on the other hand very flexible in handling. The formwork device can thus be brought into a completely folded or a partially folded position and the chain can additionally secure the two formwork devices connected to one another by means of the hinge, wherein in a preferred embodiment the formwork device assumes an A-shape in a side view. In this A-shaped, the hinge is located at the upper side and the two formwork panels enclose an angle with one another. In this folded state, the formwork panels can enclose an acute angle, preferably between 20 and 35 degrees. The connection device can preferably be provided at the narrow side, preferably in the middle on the formwork panels. A connection device is preferably present on each side. Insofar as the connection device is a chain or a rope, the chain can be provided for example with hooks at the end, which are hooked into bolts which project laterally from the formwork panels. The angle of the A-shape can be determined by the length of the chain. With this embodiment, it is possible for the formwork device to stand independently. The formwork device can thus be used without further supports. Thus, it is possible to erect a plurality of formwork devices independently of one another and beside one another. The formwork device can thus be used without great expense and as an independent formwork device.

In a preferred embodiment, the formwork panel can comprise at least one roller, preferably at the formwork rear face, for displacing the formwork panel. Such a roller in particular facilitates the transfer of the formwork device from the unfolded into the folded state. The formwork device can be raised at the hinge for example by means of a crane and the rollers thereby roll over the ground, wherein the formwork device can assume the folded state. When a desired folded state, i.e. a partially folded state or a completely folded state, is reached, the formwork panels can be secured by the safety device against unfolding when in the folded state. The crane or suchlike can then be removed, and the formwork device can stand independently. It is particularly advantageous for the roller to be arranged at the edge of the formwork panel. It is then possible for the formwork device to roll away over the roller during the entire process of transferring from the unfolded into the folded state. The forces required for the transfer of the formwork device from the unfolded into the folded state can thus be minimised.

According to the invention, a method of producing a precast concrete part using a formwork device of the aforementioned type is also claimed, wherein the hardening of the concrete takes place in the at least partially folded state of the formwork device. The hardening of the concrete can take place in the completely folded or partially folded state. Under certain circumstances, it may be advantageous if the filling with concrete takes place in the unfolded state. In particular, by using the formwork device according to the invention, the independent production of precast concrete parts can be carried out with the formwork device directly on the building site. The formwork device can be handled and operated in a straightforward manner with a crane on the building site.

The invention is explained in greater detail below with the aid of the figures. In the figures:

Figure 1 shows a formwork device according to the invention in an unfolded state;

Figure 2 shows the formwork device from figure 1 with an inserted reinforcement mat;

Figure 3 shows the formwork device from figure 1 with a formwork device and an inserted formwork part;

Figure 4	shows the formwork device	according	to	the
invention with a cover;
Figure 5	shows the formwork device	according	to	the
invention in	the folded state.
Figures	6A-D show the procedure in	the production	of a

precast concrete part with the formwork device according to the invention .

Figure 1 shows the formwork device 1 according to the invention in the unfolded state. Formwork device 1 comprises two formwork panels 2, which are hinged together along a swivel axis 4 by means of hinges 15. Hinges 15 can be fixed hinges, or ones which are designed in a releasable manner in order to separate the two formwork panels 2 from one another.

Formwork panels 2 each comprise formwork walls 3. Formwork walls 3 each run along the edge of formwork panels 2. Formwork panels 2 are essentially rectangular and formwork wall 3 extends around three of the four sides of formwork panels 2. The edge adjacent to hinges 15 is in each case designed without a formwork wall 3.

In an alternative embodiment, formwork edge 3 can also extend along all four sides of a formwork panel 2. It thus forms a closed line. It is also conceivable to provide, instead of a formwork wall 3 along the edge of formwork panel 2, formwork wall 3 spaced apart from the edge.

Formwork panels 2 are made of steel and formwork wall 3 is constituted in one piece with formwork panels 2. Alternatively, it is also conceivable to form the formwork wall for example by magnetic formwork walls, which are fixed magnetically on a formwork front face 5 of formwork panel 2. Such a formwork wall is represented in figure 3. A magnetically held formwork wall 6 is shown there, which is held to formwork front face 5 by means of magnetic holders 7 .

Formwork rear face 8 facing away from formwork front face 5 is shown in figure 5.

Furthermore, formwork panels 2 comprise rollers 9, which are located on edge 2a of formwork panel 2 which edge 2a faces away from hinges 15.

Formwork device 1 is represented in the unfolded state in figure 2 with reinforcement mats 10 arranged on formwork front face 5. Such reinforcement mats 10 can also be used with formwork device 1 according to figure 3.

Formwork device 1 according to the invention is represented in figure 4 with formwork panels 2, wherein a cover 11 is fitted in each case on formwork panels 2. Covers 11 are shaped rectangular in the same way as formwork panels 2. Other shapes are of course also possible. In the present example of embodiment, cover 11 extends over entire formwork panel 2. Covers are also conceivable which are smaller than formwork panel 2 and cover formwork panel 2 only partially.

Formwork front face 5 forms, together with formwork wall 3, a formwork chamber 12. This formwork chamber 12 can be closed by cover 11.

Fastening means 13 are provided for fastening cover 11 to the assigned formwork panel 2. This fastening means 13 is preferably a nut and bolt (screw) connection, with which cover 11 is fastened to an assigned formwork panel 2. Alternatively, tension locks or quick-action closures are also conceivable. In the case of the present example of embodiment, two fastening means 13 are located in each case along formwork wall 3 at each side of formwork wall 3.

Furthermore, formwork device 1 according to the invention comprises safety devices 14. Safety devices 14 comprise chains, which are attached to associated pegs 16 at the side walls of formwork panels 2. When formwork device 1 is transferred from the unfolded state into the folded state according to figure 5, unfolding of formwork device 1 can be prevented by safety devices .

In order to be able to transfer formwork device 1 from the unfolded state into the folded state according to figure 5, holding means, which are not represented, are provided. The holding means are located in the region of hinges 15. They are used for example to suspend lifting gear, such as for example chains or suchlike of a crane. The lifting gear engages on hinges and lifts formwork device 1, wherein the two formwork panels 2 can be moved towards one another.

The folded state according to figure 5 is a partially folded state, wherein formwork rear faces 8 are facing one another and enclose an angle of approx. 25 to 35 degrees. In a side view according to figures 6C and 6D, formwork panels 2 form an A-shape. As soon as formwork panels 2 are secured by means of safety devices 14, they remain standing independently.

The effect and mode of functioning of the invention is explained in greater detail below.

For the production of a precast concrete part, formwork device 1 is first present in an unfolded state. Formwork device 1, or formwork panels 2, can then be suitably provided with reinforcement mats 10 and suchlike. It is conceivable to fit socalled supports, with which for example cutouts for doors and windows are provided. These supports are held by magnetic holders similar to magnetically held formwork wall 6 from figure 3. In a next step, concrete is filled into formwork chamber 12. Cover 11 is then fitted on as the next step. Cover 11 is placed on formwork panel 2 and is fastened with fastening means 13 in each case to formwork panel 2. In order to facilitate the assembly, tongue and groove arrangements can be provided on cover 11 and/or formwork panel 2 or formwork wall 3.

As soon as the concrete starts to harden somewhat, formwork device 1 can be lifted by means of lifting gear, such as for example a crane, and transferred into a state according to figure 5. As soon as this state is reached, undesired unfolding of formwork device 1 can be prevented by safety device 14. The lifting gear can now be removed.

During the transfer from the unfolded into the folded position, rollers 9 roll away on the ground.

It is also possible to place formwork device 1 by means of the lifting gear at another location and to leave formwork device at this location as an independently standing formwork device 1 until the precast concrete part has completely hardened. It is also conceivable to use formwork device 1 for the transport of delicate precast concrete parts. For this purpose, formwork panels can be completely folded onto one another, and can be prevented from unfolding by corresponding safety devices 14. The stripping of the formwork from the precast concrete parts can only then take place at the target location by unfolding cover 11. Particularly delicate precast concrete parts can thus be safely transported in this way.

Furthermore, it is possible to produce precast concrete parts directly on the building site by means of formwork device 1 according to the invention and to handle the precast concrete parts more easily. The only thing that is needed is lifting gear in order to transfer formwork device 1 from the unfolded into the folded state. In the folded state, formwork device 1 is extremely space-saving. Formwork device 1 can be transferred to another 10 location in order to harden the precast concrete part. The place thus becoming free can be used for example for another formwork device and for the concreting of a further precast concrete part. As a result of the embodiment of formwork device 1 according to the invention, completely new possibilities arise for the use of 15 formwork devices and possibilities of concreting precast concrete parts .

Claims

PATENT CLAIMS

1. A formwork device for producing building components, in particular precast concrete parts, wherein the formwork device (1) comprises two formwork panels (2) which can be hinged together preferably in a releasable manner in order to be transferred from an unfolded state into a folded state, wherein each formwork panel (2) comprises a formwork front face (5) and a formwork rear face (8), and the formwork rear faces face each other in the folded (8) of the two formwork panels (2) state, characterised in that a formwork chamber preferably be closed by a cover at least on (11) is provided for filling with

The formwork device a fluid that one can of the formwork front faces (5) be hardened, preferably concrete, according to claim 1, characterised in that the formwork chamber which projects with respect to the formwork front face (5).

(12) comprises a formwork wall

3. The formwork device according to claim 1 or 2, characterised in that the formwork wall ( 3) is constituted in one piece with l the formwork front face (5). 4 . The formwork device according to at least one of the preceding claims, characterised in that the formwork wall (3) comprises formwork magnets (7). 5. The formwork device according to at least one of the preceding claims, characterised in that the formwork wall (3) is formed by a preferably completely circumferential border of the formwork front face (5). 6. The formwork device according to at least one of the preceding claims, characterised in that the formwork wall (3) forms a closed line. 7 . The formwork device according to at least one of the preceding claims, characterised in that the formwork wall (3)

comprises a preferably closeable opening for the filling with the fluid that can be hardened.

8 . The formwork device according to at least one of the preceding claims, characterised in that the opening is facing the hinge (15) 9. The formwork device according to at least one of the preceding claims, characterised in that the open ing is provided in the cover (11) or can be closed by the cover (11) • 10 . The formwork device according to at least one of the

preceding claims, characterised in that the cover fastened at least indirectly to the formwork panel (2), preferably in a releasable manner.

11. The formwork device according to at least one of the preceding claims, characterised in that fastening means (13) are provided for connecting the cover (11) to the formwork panel (2) and/or the formwork wall (3), preferably in a releasable manner.

12. The formwork device according to at least one of the preceding claims, characterised in that the fastening means (13) comprise at least one clamping device.

13. The formwork device according to at least one of the preceding claims, characterised in that a guide device for the cover (11) is provided between the formwork panel (2) and/or the formwork wall (3).

14. The formwork device according to at least one of the preceding claims, characterised in that a safety device (14) is provided, with which the formwork panels (2) in the folded state can be secured against unfolding.

15. The formwork device according to at least one of the preceding claims, characterised in that the safety device (14) is provided between the formwork panels (2) and is constituted as a connection device (14), in order to connect the two formwork panels (2) together at least in the folded state.

16. The formwork device according to at least one of the preceding claims, characterised in that the connection device (14) is flexible or articulated, preferably constituted as a chain or rope .

17. The formwork device according to at least one of the preceding claims, characterised in that the connection device (14) is provided at the narrow side, preferably in the middle on the formwork panel.

18. The formwork device according to at least one of the preceding claims, characterised in that, in the folded state, the formwork panels (2) enclose an acute angle, preferably between 20 and 35 degrees, so that they can be erected in the folded state in an A-shape in a side view.

19. The formwork device according to at least one of the preceding claims, characterised in that the formwork panel (2) comprises at least one roller (9), preferably at the formwork rear face (8), for displacing the formwork panel (2).

20. The formwork device according to at least one of the preceding claims, characterised in that the roller (9) is arranged at the edge (2a) of the formwork panel (2).

21. A method for producing a precast concrete part using a

5 formwork device according to any one of the preceding claims, characterised in that the hardening of the concrete takes place in the at least partially folded state of the formwork device (1).

22. The method according to claim 21, characterised in that the filling with concrete takes place in the unfolded state.