EP1720180A2 - Switchable magnetic device - Google Patents

Abstract

The device includes a magnet mechanism (10) that generates a magnetic force and is indirectly connected to a magnetizable formwork base (2) through a magnetizable supporting mechanism (20). The device is movable between a first position in which the supporting mechanism transmits the magnetic force to the formwork base to fasten the device to the formwork base, and a second position that interrupts transmission of the magnetic force such that the device may be taken off or adjusted.

Description

The invention relates to a magnetic device for fastening a formwork device on a magnetizable formwork underlay.

Magnetic devices for fastening a formwork device to a magnetizable formwork support are known from the prior art, which can be transferred between a lowered position, in which the magnet device bears against the formwork support, and a raised position, in which the magnet device is spaced from the formwork support.

Such magnetic devices have the disadvantage that when transferring between the lowered position and the raised position, the enormous magnetic forces which the magnetic device exerts on the formwork support are to be overcome. Although the prior art already has corresponding means, e.g. Eccentric lever, providing such magnetic forces e.g. when lifting the magnetic device of the formwork support to overcome as smoothly as possible, so act especially when placing the magnetic device large forces, as a result of which the magnetic device is pulled jerkily on the formwork support. The jerky or jerky movement, especially when placing the magnetic device on the formwork support can move an already positioned formwork device again and make repositioning required, which is generally undesirable and takes a lot of time.

To overcome this problem, the invention provides a switchable magnetic device for attaching a formwork on a magnetizable formwork underlay, with a magnetic force generating magnetic device and at least partially magnetizable support means through which the magnetic device at at least indirectly attached to the shuttering pad magnet device Shielding support is supported, wherein the magnetic device between a first position, in which the support means transmits the magnetic force to the shuttering pad to fix the magnet device to the shuttering pad, and a second position in which the transmission of the magnetic force between the magnet device and the shuttering pad is substantially interrupted so that the magnet device can be lifted from the shuttering pad is, is switchable. The magnet device is not brought into abutment with the formwork support itself, because the magnet device magnetizes the support device at least in sections and the magnetic force is transmitted to the formwork support via the support device. On the permeated by magnetic field lines, magnetizable sections, such as the formwork underlay, a particularly large magnetic force acts when the magnetic field lines between the magnetic poles are guided in a closed line by magnetizable material, such as steel. This magnetic force is abruptly reduced when the closed line between the poles is interrupted. For example, a non-magnetizable material may be disposed therebetween between the magnet device and the shuttering pad, or the magnet device and the support device may be moved relative to each other and spaced from one another. As a result, the force acting on the formwork support magnetic force is significantly reduced and the magnetic device can be easily lifted.

For transferring the magnetic device between the first and second positions, it proves to be advantageous if the magnetic device and the support device are at least partially movable relative to each other.

The transfer of the magnetic device between the first and second positions is particularly simple if the magnetic device and the support device are at least partially movable in a translational movement relative to each other. Thereby, the magnetic device can be transferred, for example, by a simple linear hand movement between the first and second positions.

When the support means is at least partially disposed in the first position between the magnet means and the shuttering pad, the distance to be bridged by the support means between the magnet means and the shuttering pad is smallest, and the magnetic force generated by the magnet means and acting on the shutter pad is greatest.

In order to interrupt the transmission of the magnetic force to the formwork support in a particularly simple and effective manner, it proves to be particularly helpful if the magnet device has at least one non-magnetizable shielding device.

The support means has the function of transmitting in the first position of the magnetic device the magnetic force to the formwork support and in the second position to interrupt the transmission of the magnetic force between the magnet device and the formwork support. These two functions can be achieved particularly simply if the support device has at least one non-magnetizable shielding device and in the first position a magnetizable section of the support device is arranged between the magnet device and the shuttering base, while in the second position a non-magnetizable section of the Supporting device between the magnetic device and the formwork support is arranged.

The interruption of the transmission of the magnetic force between the magnetic device and the formwork support can also be achieved particularly easily if the magnet device and the shielding device are movable relative to one another at least in sections.

In order to interrupt the transmission of the magnetic force between the magnet device and the formwork support in a particularly simple and effective manner, it proves to be helpful if the shielding device in the second position at least partially between the magnet device and the formwork support and / or between the magnet device and the support device is arranged. At the interfaces between the magnet device and the support device or between the magnet device and the formwork support, the transmission of the magnetic force to the formwork support can be particularly easily interrupted by interposing a non-magnetizable section.

The transmission of the magnetic force between the magnet device and the shuttering pad is particularly good in the first position of the magnet device when the magnetic and magnetizable sections are directly in contact. Therefore, it can greatly improve the transmission of the magnetic force from the magnetic device to the support means in the first position of the magnetic device when the magnetic device is at least has a contact surface and the support means has at least one contact surface, wherein the contact surface of the magnetic device and the contact surface of the support means in the first position at least partially and flat against each other. For this purpose, the contact surfaces of the magnetic device and the contact surfaces of the support means are preferably matched to each other in number and size.

When the support means has at least one magnetizable portion and at least one non-magnetizable portion, depending on the preferred position of the magnet apparatus, the magnetizable portion or non-magnetizable portion may be disposed between the magnet means and the shuttering pad to increase the magnetic force between the magnet means and the shuttering pad either to transmit or to interrupt the transmission.

In a preferred embodiment of the invention, the magnetic device comprises a housing and a unit movable relative to the housing, wherein the housing comprises the support means and the movable unit comprises the magnet means. The housing may be mounted on the formwork pad such that the support means abuts the formwork pad while the magnet means is spaced apart as a movable unit from the formwork pad and is movable for transferring the magnet apparatus between the first and second positions relative to the support means.

In a particularly preferred embodiment, the support device has at least two sides of the plant, wherein at least one of the plant sides rests at at least indirectly on the formwork base when attached to the formwork support magnetic device. For example, the magnetic device, with different holding force acting on the formwork support when the plant sides have different sized contact surfaces.

If the contact sides of the support device are arranged essentially at right angles to one another, the second contact side is suitable, for example, for being brought into contact with a magnetizable formwork device in order to fix the formwork device on the formwork support.

The influence of surrounding objects by the magnetic force of the magnetic device can be reduced by the fact that the magnetic device comprises a non-magnetizable cover.

The attachment of the formwork device on the formwork support is particularly simple if the magnetic device has a connection device for connecting the formwork device. Advantageously, this connection device is designed as an adapter in order to be compatible with a plurality of formwork devices. For example, the supporting device having a second contact side is also designed as a connection device in order to connect a magnetizable formwork device and to hold it in contact with the formwork support by the magnetic force.

The number of required components of a shuttering device can be reduced if the magnetic device is designed as a shuttering device and / or has at least one shuttering surface.

When the magnetic device is switchable from a side opposite to the abutment side, the operation of the magnetic device is considerably simplified and the sides of the magnetic device adjacent to the abutment side can be formed as shuttering surfaces.

Hereinafter, the preferred embodiments of the invention will be described with reference to the accompanying drawings.

Brief description of the drawings

FIG. 1

shows a plan view of the magnetic device of the first embodiment.

FIG. 2

shows a front view of the magnetic device of the first embodiment.

FIG. 3

shows a side view of the magnetic device of the first embodiment.

FIG. 4

shows a section IV-IV of the magnetic device of the first embodiment along a line IV-IV of Figure 3.

FIG. 5

shows a section V-V of the magnetic device of the first embodiment along a line V-V of Figure 4, wherein the magnetic device is in the first position.

FIG. 6

shows a section VI-VI of the magnetic device of the first embodiment along a line VI-VI of Figure 5.

FIG. 7

shows a similar to Figure 5 sectional view of the magnetic device of the first embodiment, wherein the magnetic device is displaced relative to the first position.

FIG. 8

shows a similar to Figure 5 sectional view of the magnetic device of the first embodiment, wherein the magnetic device is in the second position.

FIG. 9

shows a plan view of the magnetic device of the second embodiment.

FIG. 10

shows a front view of the magnetic device of the second embodiment.

FIG. 11

shows a side view of the magnetic device of the second embodiment.

FIG. 12

shows a section XII-XII of the magnetic device of the second embodiment along a line XII-XII of Figure 11.

FIG. 13

shows a section XIII-XIII of the magnetic device of the second embodiment along a line XIII-XIII of Figure 12, wherein the magnetic device is in the first position.

FIG. 14

shows a section XIV-XIV of the magnetic device of the second embodiment along a line XIV-XIV of Figure 12th

FIG. 15

time a section XV-XV of the magnetic device of the second embodiment along a line XV-XV of Figure 13th

FIG. 16

shows a similar to Figure 13 sectional view of the magnetic device of the second embodiment, wherein the magnetic device is in offset from the first position position.

FIG. 17

shows a similar to Figure 13 sectional view of the magnetic device of the second embodiment, wherein the magnetic device is in the second position.

FIG. 18

shows the built-in a first formwork device magnetic device of the first embodiment in a plan view.

FIG. 19

shows the built in the first formwork device magnetic device of the first embodiment in a front view.

FIG. 20

shows the built-in the first formwork device magnetic device of the first embodiment in a side view.

FIG. 21

shows the built-in a first formwork device, modified magnetic device of the first embodiment in a plan view.

FIG. 22

shows the built-in the first formwork device, modified magnetic device of the first embodiment in a front view.

FIG. 23

shows the built-in the first formwork device, modified magnetic device of the first embodiment in a side view.

FIG. 24

shows the installed in the first formwork device, modified magnetic device of the first embodiment in a sectional view taken along a line XXIV-XXIV in Figure 21.

FIG. 25

shows the built-in a second formwork device, modified magnetic device of the first embodiment in a plan view.

FIG. 26

shows the built in the second formwork device, modified magnetic device of the first embodiment in a front view.

FIG. 27

shows the built in the second formwork device, modified magnetic device of the first embodiment in a side view.

FIG. 28

FIG. 25 shows the modified magnetic device of the first exemplary embodiment installed in the second formwork device in a sectional view along a line XXVIII-XXVII in FIG. 25.

Detailed description of the drawings

In the following description, positional terms such as "top", "bottom", "left", "right" or the like will be used to better understand the description of the invention. These position-indicating names are to be understood in each case only in relation to the respective representation of the drawing and beyond have no binding character.

In the context of the invention, a section is referred to as "magnetizable section", which has at least one magnetizable material and is preferably made of steel. The term "non-magnetizable section" or "shielding section" is understood to mean a section which essentially comprises one or more non-magnetizable materials, such as e.g. Aluminum has.

Figures 1 to 8 relate to the first embodiment and Figures 9 to 17, the second embodiment of the invention. With reference to Figures 18 to 28 preferred applications are described in which a formwork device 9 by the inventive Magnetic device 1 is mounted on a shuttering pad 2. First, the common features of the embodiments of the magnetic device 1 according to the invention will be described before going into the differences in detail.

The invention relates to a switchable magnetic device 1 for attaching a formwork device 9 on a magnetizable formwork support 2, with at least one magnet device generating magnetic device 10 and at least one at least partially magnetizable support means 20 through which the magnetic device 10 at at least one of the shuttering pad 2 attached magnetic device 1 indirectly supported on the formwork support 2. The magnetic device 1 is switchable between a first position, which is shown in particular in Figure 5 and Figure 13, and a second position, which is shown in particular in Figure 8 and Figure 17.

In the first position, the magnetic force generated by the magnetic device 10 is transmitted from the supporting device 20 to the shuttering pad 2 to fix the magnetic device 1 and the shuttering device 9 on the shuttering pad 2.

In the second position, the transmission of the magnetic force between the magnetic device 10 and the shuttering pad 2 is substantially interrupted, so that the magnetic device 1 can be lifted off the shuttering pad 2. The magnetic device 10 and the support device 20 are for translating the magnetic device 1 between the first and second positions relative to each other along and opposite to the arrows shown in Figures 7, 8, 16 and 17 translationally movable.

In the second position of the magnetic device 1, non-magnetizable shielding means 13, 23 are arranged between the magnet device 10 and the shuttering pad 2 and between the magnet device 10 and the support device 20 to interrupt the transmission of the magnetic force between the magnet device 10 and the shuttering pad 2. As shielding devices 13, 23, the non-magnetizable shielding sections 13 and 23 are provided in the magnetic device 1 according to the invention. The shielding sections 13 are associated with the magnet device 10 as a first shielding device 13, and the shielding sections 23 are associated with the support device 20 as a second shielding device 23. In the second shown in Figures 8 and 17 Position of the magnetic device 1, the Abschirmabschnitte 13 of the magnetic device 10 between the magnetic portions 11 and the magnetizable portions 22 of the support means 20 are arranged, and the Abschirmabschnitte 23 of the support means 20 are disposed between the magnetizable portions 12 of the magnetic device 10 and the shuttering pad 2. In this case, the transmission of the magnetic force is interrupted by the magnetic portions 11 on the formwork support 2 and the magnetic force acting on the formwork support 2 very low, so that the magnetic device 1 can be easily lifted from the formwork support 2.

The magnetic device 1 comprises, in addition to the magnet device 10 and the support means 20, an adjustment mechanism 30 for moving the magnet device 10 and the support device 20 relative to each other and for transferring the magnet device 1 from the first position to the second position, as well as a non-magnetizable housing cover 6 eg made of stainless steel, which completely surrounds the magnetic device 1 with the exception of the abutment side (s) 4 (5) of the support device 20.

Hereinafter, the features of the supporting device 20 will be described. The support device 20 comprises a plurality of sequentially arranged in succession, magnetizable portions 22 and a plurality of respectively intermediate shielding sections 23 of the same profile, which are penetrated by elongated, bolt-shaped connecting elements 24 and, as in Figures 5, 7, 8 and 13, 16, 17 is shown vividly, to be held together.

The magnetizable sections 22 consist essentially of steel and the non-magnetizable sections 23 essentially of aluminum. The magnetizable sections 22 and the non-magnetizable sections 23 are laid flat against each other with the surfaces facing each other, wherein the exposed surfaces are substantially flush and aligned with each other. The magnetizable portions 22 and the non-magnetizable portions 23 are penetrated by the connecting pins 24 perpendicular to the facing surfaces, so that the support portion 20 results in a composite of the plurality of individual profiles 22, 23 overall profile.

Hereinafter, the features of the magnetic device 10 will be described. The magnet device 10 of both embodiments comprises a plurality of magnetic sections 11, a plurality of cuboid, magnetizable sections 12, and a plurality of cuboid, non-magnetizable Abschirmabschnitten 13, wherein the portions 11, 12, 13 are penetrated by bolt-shaped connecting elements 14 and held together. The magnetic device 10 composed of the plurality of individual profiles 11, 12, 13 essentially has the shape of a block-shaped block. The magnetic portions 11 are substantially cylindrical permanent magnets 11 with a central through hole. Two cylindrical permanent magnets 11 are fitted in correspondingly shaped openings of the non-magnetizable shielding section 13, wherein the cylindrical lateral surfaces of the permanent magnets 11 are completely surrounded by the respective shielding section 13. The outer edges of the shielding section 13 essentially describe a cuboid of the same width and length as the magnetizable sections 12 and the same thickness as the magnetic sections 11. The axially end faces of the cylindrical permanent magnets 11 terminate flush on both sides with the corresponding surfaces of the shielding section 13 enclosing them. A magnet unit consisting of two magnets 11 and a shielding section 13 is arranged in each case between two magnetizable sections 12, wherein the respective equally sized end faces of the magnet units and of the magnetizable sections 12 lie flat against one another. The magnetizable portions 12 are also provided with through-holes, which are matched in number, position and size to the through holes of the magnetic portions 11, and are penetrated by the connecting elements 14. The magnetic portions 11 of the magnetic device 10 are held flat against the adjacent magnetizable portions 12 to magnetize them. The magnetic sections 11 are each rectified and the magnetic axes are arranged parallel to each other. Thereby, the magnetic effect of the individual magnetic portions 11 is enhanced. A plurality of magnetizable sections 12 and magnet units are sequenced in this way in an alternating sequence one behind the other. Two magnetizable sections 12 form the respective outermost members of this series of links chain.

At the right of the two outermost, magnetizable sections 12 in Figures 5, 7, 8 and 13, 16, 17 are receiving portions 31 secured with oval receiving openings 32, for example, welded. The receiving portions 31 are provided for receiving a mounted on a protruding to the outside of the housing 6 trunnions 34 eccentric 33. The pivot 34 may, depending on the preferred embodiment be arranged differently. In the exemplary embodiments described with reference to FIGS. 1 to 20, the pivot pin 34 is arranged parallel to a contact side or face 4 of the magnetic device 1, whereas in the exemplary embodiments described with reference to FIGS. 21 to 28 it is perpendicular to the contact side or - Area 4 of the magnetic device 1 is aligned.

In the first embodiment of the invention shown in Figures 1 to 8, the support means 20 in a substantially flat, cuboid shape with a contact side 4 for contact with the formwork support 2, wherein the support means 20 of cuboid, magnetizable sections 22 and cuboid, not Magnetizable sections 23 is composed. This is illustrated particularly clearly in FIGS. 2, 4 and 6.

In the second embodiment of the invention, the support means has a substantially L-shaped cross-section, as shown particularly clearly in Figures 12 and 15. The magnetizable sections 22 made of steel and the non-magnetizable sections 23 made of aluminum in each case have an L-shaped configuration and are connected with bolt-shaped connecting elements 24 to the elongated L-shaped profile of the support means 20. In this case, the magnetic device 1 or the support device 20 comprises a first contact side 4 for contact with the formwork support 2, and a second contact side 5, to which, for example, a magnetizable formwork device can be attached. The second system side 5 is designed as an adapter to connect any magnetizable object to the magnetic device 1 and forms, for example, a connection device for connecting a shuttering device to the magnetic device 1. The magnetic device 1 can also be designed as a formwork device itself by the housing of the magnetic device 1 a formwork surface is provided. Alternatively, a shuttering device 9 is mounted on the magnetic device 1 according to the invention, or the magnetic device 1 according to the invention is installed in a shuttering device 9, as will be described below with reference to Figures 18 to 28.

Figures 18 to 20 show the built-in a first formwork device 9, the inventive magnetic device 1 of the first embodiment described above in a plan view, front view and side view. The formwork device 9 comprises a cross-sectionally H-shaped element whose legs 9a, 9b, as shown in Figure 19, are brought inside into contact with the outer sides of the legs of the housing cover 6, wherein the pivot pin 34 through a corresponding opening in the left leg 9b of the formwork device. 9 protrudes and operable from the outside. In the mounted on the formwork support 2 state of the magnetic device 1, the legs 9a and 9b extend substantially perpendicular to the surface of the shuttering pad 2. The outer side of the leg 9a is formed as a shuttering surface.

FIGS. 21 to 24 show a modified magnetic device 1 of the first exemplary embodiment installed in the first formwork device 9 in a plan view, front view, side view and sectional view. The formwork device 9 comprises, as in the above case, a cross-sectionally H-shaped element, whose legs 9a, 9b, as shown in Figure 19, inside are brought into contact with the outer sides of the legs of the housing cover 6. However, the magnetic device 1 is changed from the first embodiment described above, wherein the adjusting mechanism 30, comprising the receiving portion 31, the receptacle 32, the eccentric 33, the pivot 34 and the bearing portion 35, offset by 90 °. Figure 24 shows the arrangement of the adjusting mechanism 30 particularly clearly in a sectional view. The pivot pin 34 projects through respective openings in the housing cover 6 or in a web connecting the legs 9a and 9b 9c of the shuttering device 9 and is switchable from one of the contact side 4 opposite side of the magnetic device 1 between the first and second positions. This has the advantage that the magnetic device 1 is easier to operate, and secondly that the outer surfaces of the two legs 9a and 9b of the formwork device 9 can be provided as shuttering surfaces.

Figures 25 to 28 show the built-in a second formwork device 9, modified magnetic device 1 of the first embodiment in a plan view, front view, side view and sectional view. Compared to the application described above with reference to Figures 21 to 24, the formwork device 9 is changed. In particular, in Figures 26 and 28 is shown clearly how the leg 9a of the formwork device 9 is provided with a trapezoidal in cross-section bulge 9d and only the lower part of the inside of the leg 9a is held in contact with the outside of the housing cover 6 of the magnetic device 1 , The outer surface of the bulged leg 9a is also formed as a formwork surface, so that the formwork device 9 provides two different formwork surfaces.

Hereinafter, the preferred application of the invention will be described with reference to the accompanying drawings.

For attachment of the magnetic device 1 and the shuttering device 9 on the shuttering pad 2, the magnetic device 1 is first placed on the shuttering pad 2 and transferred from the second position to the first position.

In this case, the magnetizable portions 12 of the magnetic device 10 and the magnetizable portions 22 of the support device 20, which are matched in number and size, arranged immediately adjacent to each other, so that the contact surfaces of the magnetizable portions 12 of the magnetic device 10 and the contact surfaces of the magnetizable portions 22nd the support device 20 lie flat on each other. Because the magnetizable portions 22 of the support means 20, as well as the non-magnetizable portions 23 at least indirectly supported on the shuttering pad 2, the magnetic force generated by the magnetic portions 11 in the first position of the magnetic device 1 on the magnetizable portions 12 of the magnetic device 10th transferred to the magnetizable portions 22 of the support device 20 and from there to the formwork base 2. Between the respective poles of the magnetic sections 11, the magnetic field lines extend through the magnetizable sections 12, 22 and through the shuttering pad 2 substantially in a closed line.

For transferring the magnetic device 1 between the first and second positions, the magnetic device 10 and the support device 20 are moved relative to each other by actuating the adjustment mechanism 30. By rotation of the pivot 34 of the eccentric 33 is set in motion and moved in the receptacle 32 of the receiving portion 31, wherein the magnetic device 10 is moved relative to the support device 20 in a translational movement.

The pivot 34 projects in the views of Figures 3, 11 and 18 perpendicular to the image plane on the housing cover 6 and can be operated from outside the housing cover 6 by hand or with a special tool. The pivot 34 is thereby a Axis perpendicular to the image plane of Figures 5, 13 and 18 rotated clockwise. The image sequences of Figures 5, 7 and 8 and Figures 13, 16 and 17 illustrate the movement of the magnetic device 10 relative to the support means 20 from the first position to the second position.

In the cases of application shown in FIGS. 21 to 28, the adjusting mechanism 30 or the pivot 34 is operated by a side of the magnetic device 1 lying opposite the contact side 4. The pivot 34 extends in the views of Figures 22, 24, 26 and 28 perpendicular to the surface of the formwork support 2 and protrudes over the housing cover 6 and the legs 9a and 9b of the formwork device 9 connecting web 9c so that it from outside the formwork device 9 can be operated by hand or with a special tool. The adjustment of the magnetic device 1 between the first and second positions takes place according to the principle illustrated in FIGS. 5, 7, 8 or 13, 16 and 17.

When transferring the magnetic device 1 from the first to the second position, the magnetic device 10 is offset relative to the support device 20. As described above, the shield portions 13 of the magnet device 10 are sandwiched between the magnet portions 11 and the magnetizable portions 22 of the support 20, and the shield portions 23 of the support 20 are disposed between the magnetizable portions 12 of the magnet 10 and the shutter 2, so that the transmission of the magnetic force from the magnetic sections 11 to the shuttering pad 2 is interrupted. As shown in FIGS. 8 and 17, the contact surfaces of the magnetizable portions 12 of the magnet 10 and the magnetizable portions 22 of the support 20 do not overlap because the nonmagnetic portions 13, 23 move from the first position to the second position in the direction of movement of the magnet 10 greater extent than the magnetic portions 12, 22nd

Although the transfer of the magnetic force from the magnet 10 to the formwork support 2 is not completely interrupted by the transfer of the magnetic device 1 from the first to the second position, as even with the best shielding still a minimum magnetic force of the magnetic portions 11 on the formwork support second acts, but the transfer of magnetic force from the magnet 11 to the formwork base 2 so far limited that the force acting on the formwork support 2 magnetic force is substantially reduced and the magnetic device 1 as a result can be easily lifted off the formwork support 2.

Of course, the embodiments of the invention shown in Figures 1 to 28 are only a small selection of a variety of possible embodiments that can be realized within the scope of the invention under the protection of the accompanying claims.

Claims (18)

Switchable magnetic device (1) for fastening a formwork device (9) on a magnetizable formwork support (2), with a magnetic force generating magnetic device (10) and an at least partially magnetizable support means (20) via which the magnetic device (10) at The magnetic device (1) between a first position in which the support means (20) transmits the magnetic force to the formwork support (2), the magnetic device (1) supported at least indirectly on the formwork support (2) (1) on the formwork support (2), and a second position in which the transfer of the magnetic force between the magnet device (10) and the formwork support (2) is substantially interrupted, so that the magnet device (1) of the formwork support (2) is liftable, switchable. Switchable magnetic device (1) according to claim 1, characterized in that the magnetic device (10) and the support means (20) are at least partially movable relative to each other. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (10) and the support means (20) are at least partially movable in a translational movement relative to each other. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the support means (20) in the first position at least in sections between the magnetic device (10) and the shuttering pad (2) is arranged. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) has at least one non-magnetizable shielding device (13, 23). Switchable magnetic device (1) according to one of the preceding claims, characterized in that the support device (20) has at least one non-magnetizable shielding device (23). Switchable magnetic device (1) according to any one of the preceding claims, characterized in that the magnetic device (10) and the shielding device (23) are at least partially movable relative to each other. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the shielding device (13, 23) in the second position at least partially between the magnetic device (10) and the shuttering pad (2) and / or between the magnetic device (10) and the support means (2) is arranged. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (10) has at least one contact surface and the support device (20) has at least one contact surface, wherein the contact surface of the magnetic device (10) and the contact surface of the support device (20 ) lie in the first position at least partially flat against each other. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the support means (20) has at least one magnetizable portion (22) and at least one non-magnetizable portion (23). Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) comprises a housing and a unit movable relative to the housing, wherein the housing comprises the support means (20) and the movable unit comprises the magnet means (10). Switchable magnetic device (1) according to any one of the preceding claims, characterized in that the support means (20) at least two plant sides (4, 5), wherein at least one Anlageseiten (4) on at the shuttering pad (2) attached magnetic device (1) at least indirectly on the formwork support (2) is applied. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the abutment sides (4, 5) of the support device (20) are arranged substantially at right angles to each other. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) comprises a non-magnetizable cover (6). Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) has a connection device (5, 20) for connecting the formwork device (9). Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) has at least one shuttering surface. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) is designed as a shuttering device. Switchable magnetic device (1) according to one of the preceding claims, characterized in that the magnetic device (1) from one of the contact side (4, 5) opposite side is switchable.

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