DE20220101U1 - Justierabschalstütze - Google Patents

Description

Attorney file: 20025312

Applicant: Wilhelm Layher Vermögensverwaltungs-GmbH

Ochsenbacher Strasse 56
D-74363 Güglingen-Eibensbach

ADJUSTABLE SHUTDOWN SUPPORT

The invention relates to a formwork support for supporting a formwork body, in particular a formwork panel, with an adjusting body to which the formwork body can be fastened and which is connected to a support body for support on an anchoring base, which can be fastened to the anchoring base with the aid of fastening means, such as ground nails or screws, wherein the support body and the adjusting body are connected to one another via at least two adjusting devices, which in turn are connected to the adjusting body via spaced, separate joints in such a way that the adjusting body can be adjusted with the aid of the adjusting devices relative to the support body at a different angle of inclination and/or at a different distance.

Such formwork supports are used in construction engineering for formwork, particularly for floor slabs or balcony slabs, or for section-by-section concreting of larger solid ceilings in order to enable formwork to be placed in a positionally favorable and vertical manner.

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Formwork supports of the aforementioned type have become generally known as so-called adjustable formwork trestles or adjusting support brackets. These are support structures with components arranged essentially in a vertical plane, namely an essentially vertical adjusting and supporting profile, a lower, essentially horizontal base profile that is articulated to this, and a diagonal profile that is articulated to each of these two profiles.

The adjustment and support profile is used to support and adjust a formwork body and has a footrest at its lower end by means of which it is supported on the anchoring base.

In the area of the hinged ends of the base profile and the diagonal profile, a second foot support is provided on the base profile or on the diagonal profile, by means of which further support of the stop-end support on the anchoring ground is achieved. These foot supports are plate-shaped and are provided with large through holes for ground nails and sometimes also with small through holes, in particular for screws, by means of which the foot supports and consequently the stop-end support can be anchored to the anchoring ground.

To adjust the adjustment and support profile at a desired angle of inclination, preferably perpendicular to the anchoring base, and in a desired position or at a desired distance, both the base profile and the diagonal profile are provided with linear actuators. These can be telescopically guided profiles that are connected to one another by means of wedges.

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Alternatively, the telescopically interlocking links can be designed with a threaded rod on which a threaded adjusting nut is rotatably arranged, which in turn is supported on a tubular body, which in turn receives the free end of the threaded rod.

With the help of these linear actuators, an extension or shortening of the respective profile can be achieved and due to their articulated connection to the adjustment and support profile via two swivel joints, which are attached to it at a distance from each other, the desired adjustment of the adjustment and support profile can be achieved.

Two methods are used to form a formwork using these previously known shuttering supports. According to a first attachment method, the shuttering supports are first aligned and then both the foot support of the adjustment and support profile and the second foot support arranged in the area of the ends of the base profile and the diagonal profile are anchored in the anchoring ground, e.g. using ground nails. In this way, the length of the lower base profile is then fixed by the ground nails and can no longer be changed. Adjusting the upper linear actuator and consequently lengthening or shortening the diagonal profile is then only possible to a limited extent.

According to a second method of installation, the formwork supports are first roughly aligned. Then only the outer ground nail is driven in, i.e. only the foot support assigned to the ends of the horizontal base profile and the diagonal profile is fixed to the

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Anchored in the anchoring base. The adjustment and support body is then finely adjusted by moving it together with its footrest into the desired distance and inclination position using the linear actuators. The second anchor is then set by driving a second ground nail into the corresponding opening of the footrest, which is firmly connected to the adjustment and support body, in the anchoring base. However, there is a risk that the shuttering support will slip again.

In the methods known from the state of the art for attaching adjustable stop-end supports, the formwork panels are always nailed from the inside out, i.e. in the direction of the stop-end support, by nailing the formwork panels onto wooden blocks embedded in the adjustment and support profile. This can cause problems with formwork for narrow walls because the space available for hammering in the nails with a hammer is limited.

It is an object of the invention to avoid the above disadvantages.

This object is achieved according to the invention by the features of claim 1, in particular in that the adjusting body, when the formwork support is anchored to the anchoring base as intended, freely supports the adjusting body, which is adjustable in its inclination and distance relative to the latter, by means of the joints and the adjusting devices, without the latter having to be anchored separately to the anchoring base.

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The invention is therefore about the fact that the adjusting body is only connected to the support body to be attached to the anchoring base via the adjusting body or, when the shuttering support is anchored to the anchoring base as intended, only to the anchoring base via the adjusting body. The measures according to the invention therefore achieve a separation of the adjusting function, i.e. the adjustability of the adjusting body on the one hand, and the supporting function, i.e. the support of the shuttering support on the anchoring base on the other.

In this way, the formwork supports can be firmly anchored to the anchoring base after an initial rough alignment and then a final fine adjustment of the adjustment body carried by the support body can be carried out using the adjustment devices. This avoids the aforementioned positioning and adjustment errors, enabling even more precise, vertical formwork.

According to a preferred development of the invention, the support body is a rigid frame, which is preferably designed with a base profile assigned to the anchoring base and a support profile arranged essentially perpendicularly to this for the adjusting body and preferably a diagonal profile stiffening the base profile and the support profile. This results in favorable arrangement and support conditions for the adjusting body.

It is advisable to fix the base profile and any diagonal profile firmly to a tube open on both sides, preferably a square tube.

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which is designed to enable the stop-end support to be fixed to the anchoring ground by means of a ground nail pushed through the tube.
5

It is also advantageous if the frame is provided with at least two spaced base plates for supporting the shuttering support on the anchoring ground, which can be anchored to the anchoring ground using the fastening means. As is known from the prior art, these base plates can be provided with openings of different sizes which allow ground nails and/or screws to be inserted, with the aid of which the shuttering support can be securely anchored to the anchoring ground.

According to a particularly preferred development of the invention, it can be provided that the adjusting device comprises a threaded rod with an external thread that is designed to match an internal thread of a support body part, wherein the threaded rod is connected at one end to the adjusting body via one of the joints and the other end has an actuating body that enables manual rotation of the threaded rod about its longitudinal axis and consequently adjustment of the adjusting body relative to the support body.

It can be useful if the longitudinal axes of the internal threads of the support body parts are arranged essentially parallel to one another. In this way, the number of joints required for distance and inclination angle adjustment can be advantageously reduced to two.

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According to a further, particularly advantageous embodiment of the invention, it can be provided that the threaded rod with its end pointing away from the actuating body is inserted through an opening in the adjusting body, the inner dimensions of which are larger than the outer dimensions of the threaded rod in the insertion area, so that a play is formed that allows different angular positions of the threaded rod relative to the adjusting body, wherein the adjusting body is preferably attached to the threaded rod with the aid of a fastening means that allows said play. This comparatively simple structural design makes it possible to create a cost-effective and robust joint that can withstand the tough practical requirements over a long period of time and that fully meets the adjustment requirements.

It can also be useful if the opening is designed as an elongated hole. This allows for larger angles of inclination between the threaded rod and the adjusting body in the longitudinal direction of the elongated hole than is possible in the transverse direction of the elongated hole.

It is also particularly advantageous if the support body is designed with a square tube designed as a support profile for the adjusting body with wall parts arranged in pairs parallel to one another, with two of the opposing wall parts being provided with through holes through which the threaded rod can be passed, and that the support body part is a square or hexagon nut with outer surfaces arranged in pairs parallel to one another, the distance between which is slightly smaller than the distance between the corresponding inner surfaces of the parallel wall parts of the square tube. This allows the

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Nut can simply be pushed into the square tube until it reaches a position in which the threaded rod can be inserted or screwed into the nut through the through hole in the square tube, whereby in this position a positive connection is formed between the nut and the square tube. This simple, cost-effective and robust construction is particularly advantageous if the threaded rod is provided with a coarse thread suitable for the construction site (Dywidag).
10

It is understood that the above measures can be combined with each other as desired within the scope of feasibility.

Further advantages, features and aspects of the invention can be found in the following description part, in which a preferred embodiment of the invention is described.

Show it:
20

Fig. 1 is a side view with partial section of two shuttering supports according to the invention, which are arranged offset by 180° to each other, with a shuttering panel being attached to each of the adjusting bodies positioned vertically here, this arrangement

intended for formwork of a wall;

Fig. 2 An enlarged side view of a formwork support according to the invention;
30

Fig. 3 is a top view of the stop-end support according to Fig. 2;

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Fig. 4 is a side view of the stop-end support according to Fig. 2 from the left, whereby the positioning body and the two threaded rods have been omitted for reasons of illustration;
5

Fig. 5 is a greatly enlarged side view of one of the joints between the positioning body and the actuator;

Fig. 6 is an enlarged side view of the positioning body according to Fig. 1 from the right, whereby for reasons of illustration only the positioning body is shown.

The shuttering support 20 essentially comprises a support body 24 that can be fastened to the anchoring base 27 and an adjusting body 23. The latter is connected to the support body 24 via two adjusting devices 28, which freely supports the adjusting body 23. The latter serves to support a formwork body 21, which is designed here as a formwork panel 22 that is fastened to the adjusting body 23.

The support body 24 is designed as a rigid frame 32. This comprises a lower, horizontal base profile 33, a support profile 34 arranged approximately perpendicular to this for the adjustment body 23, a diagonal profile 36 and a connection profile 59 designed as a tube 37. These four profile parts are arranged in a common plane 58 and are preferably each firmly welded to one another.

The four profile parts are arranged such that the support body 24 forms a support bracket for supporting the adjusting body 23 and thus for supporting the formwork body 21.

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The support profile 34 and the connection profile 59 are arranged essentially parallel to one another and essentially perpendicular to the base profile 33. The support profile 34 and the connection profile 59 are designed as square tubes 35 and 38, respectively, while the base profile 33 and the diagonal profile 36 each have a profile that is L-shaped in cross section.

' A base plate 39 is attached to the lower end of the support profile 34, which is arranged here perpendicular to the longitudinal axis of the support profile 34. As can be seen in particular from Fig. 2, the base plate 39 extends on both sides of the support profile 34, perpendicular to its longitudinal axis and perpendicular to the frame plane 58. In the two laterally extending legs of the base plate 39 there is a large hole 61 and a small hole 62. A ground nail 26 can be inserted into the large hole 61 in order to enable anchoring of the support body 24 and thus the stop-end support 20 to the anchoring base 27. Alternatively or optionally additionally, the stop-end support 20 can be attached to the anchoring base 27 with fastening means such as nails or screws, which can be pushed through or screwed in through the small holes 62 for this purpose.

A base plate 40 is also attached to the lower end of the connection profile 59, which is arranged here perpendicular to the longitudinal axis of the connection profile 59 and perpendicular to the frame plane 58. As shown in Fig. 2, small holes 62 can also be made in this base plate 40, which also enable the base plate 40 and thus the shuttering support 20 to be attached in

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this area with the aid of screws, nails or the like on the anchoring base 27. This base plate 40 can be significantly smaller in terms of its external dimensions than the base plate 39 because, according to the invention, the connection profile 59 is designed as a tube 37 that is open at both ends and through which a ground nail 26 can be inserted if the formwork support 20 is to be anchored to the anchoring base 27 by means of such fastening means.

As already mentioned above, the adjustment body 23 is attached to the support body 24 via the two adjusting devices 28. Each adjusting device 28 essentially comprises a threaded rod 41 provided with an external thread 42 suitable for construction sites, preferably a so-called Dywidag thread, an actuating body 45 fastened in the area of one end for manual actuation of the adjustment device 28 and a shoulder 64 at its other end 48. This is provided with an external thread onto which a locking nut 65 can be screwed (Fig. 5). The threaded rod 41 can be pushed through through openings 54 in adjacent parallel wall parts 53 of the support profile 34 designed as a square tube 35 for assembly. A square nut 55, also referred to as the support body part 43, is provided as the threaded counterpart for supporting the threaded rod 41. Its external dimensions are designed to match the internal dimensions of the square tube 35 of the support profile 34, whereby the external dimensions of the square nut 55 are slightly smaller than those of the square tube 35.

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Furthermore, the square nut 55 has parallel outer surfaces 56 which correspond to parallel inner surfaces 57 of the parallel wall parts 53 of the square tube 35. In this way, on the one hand, a positive connection is achieved between the square nut 55 and the square tube 35, and on the other hand, the square nut 55 can be easily pushed from above into the square tube 35 which is open to the outside.

As can be seen in particular from Fig. 2, the longitudinal axes 47 of the two square nuts 55 are arranged parallel to one another and in the frame plane 58 and here essentially perpendicular to the longitudinal axis of the support profile 34.

To assemble the adjusting devices 28, the respective square nut 55 can therefore be pushed into the square tube 35 using a rod-shaped positioning aid until a position is reached in which the threaded hole of the square nut 55 is aligned with the through holes 54 in the wall parts 53 of the square tube 35. In this position of the square nut 55, the threaded rod 41 of the adjusting device 28 can then be easily inserted with its projection 64, i.e. its end 48 opposite the actuating body 45, from the side associated with the connection profile 59 into one of the through holes 54 of the square tube 35. The threaded rod 41 can then be screwed into the square nut 55 by manually actuating the actuating body 45, which is designed as an adjusting spindle or lever or the like.

To complete the assembly, the threaded rods 41 are turned further until their attachment 64 is sufficiently

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protrudes far from the opposite through-opening 54 of the square tube 35 of the support profile 34. The adjusting body 23, which is designed symmetrically to its longitudinal axis with a U-profile 66 and with legs 67 extending outwards at the sides, can then be placed onto the extension 64 with its fastening legs 68 which are L-shaped in cross section and which here have openings 4 9 designed as elongated holes 50. A disk 69 is expediently placed on the extension 64 beforehand, and after the respective leg 67 of the adjusting body 23 has been placed on, a further disk 69 is expediently placed on the extension 64. The locking nut 65 is then screwed onto the extension 64 which has an external thread and tightened firmly.

The threaded rod 41 has a step 71 in the region of its end 48 pointing away from the actuating body 45, which is accompanied by a reduction in the external diameter (external thread 42) of the threaded rod 41 to a smaller external diameter 72 of the external thread 70 of the extension 64. This step 71 forms a stop against which the leg 67 of the adjusting body 23 can rest via the intermediate disk 69. The length of the external thread 70 in the direction of the longitudinal axis 64 of the threaded rod 41 and the dimensions of the lock nut 65 are selected such that when the lock nut 65 is firmly tightened on the external thread 70 of the extension 64, the distance between the inner surface of the lock nut 65 facing the actuating body 45 and the step 71 serving as a stop is greater than the sum of the thicknesses of the two disks 69 and the thickness of the leg 67 in this area. In this way, a sufficient

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Play is ensured so that even under the harsh practical conditions on the construction site, easy manual turning of the threaded rods 41 and thus simple and easy adjustment of the adjusting bodies 23 is always ensured.

The projection 64 has an outer diameter 72 which is smaller than the inner dimensions 51 viewed in the direction of the longitudinal axis of the elongated hole 50 or which is smaller than the distance 73 between the opening edges of the elongated hole 50 in the cutting plane formed by their longitudinal axis. In this way, a joint 29 with sufficient play is formed between the projection 64 of the threaded rod 41 and the leg 67 of the adjusting body 23, which joint makes it possible to set different angles of inclination (double arrow 30) of the adjusting body 23 by screwing in the two threaded spindles 41 to different extents.

In addition to the previously described adjustment option for the angle of inclination (double arrow 30) of the adjusting body 23 in the inclination plane corresponding to the frame plane 58, an advantageous change in the horizontal distance (double arrow 31) can also be achieved by screwing the threaded rods 41 into or out of the nuts 55 of the support body 24 if both threaded rods 41 are screwed in or out of the nuts 55 one after the other or simultaneously by a correspondingly equal screw-in or screw-out depth, so that a parallel displacement of the adjusting body 23 from a first position to a second position can be achieved.

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It is also expedient if the opening edges running parallel to the longitudinal axis of the elongated hole 50 are arranged at a distance 74 from one another which is also greater than the outer diameter 72 of the extension 64. In this way, the support body 24 can also be positioned at an angle to the formwork plane due to the play between the extension 64 and the flange or leg 67 of the adjusting body 23. It is therefore also possible to adjust the adjusting body 23 at an angle of inclination (double arrow 76) in a plane perpendicular to the frame plane 58.

The formwork bodies 21 can be attached to the adjusting body 23 in a simple manner. For this purpose, the legs 67 extending on both sides of the plane 58, i.e. on both sides of the plane of symmetry of the adjusting body 23, have through holes 63. Fasteners such as screws or nails can be screwed or hammered into the formwork body 21 through these holes 63, preferably from the outside, i.e. from the side of the adjusting body 23 associated with the support body 24.

Geitz Truckenmüi±eR

Patent Attorneys Kriegsstraße 234 . D-76135 Karlsruhe

Attorney file: 20025312

Applicant: Wilhelm Layher Vermögensverwaltungs-GmbH Ochsenbacher Straße 56
D-74363 Güglingen-Eibensbach

LIST OF REFERENCE SYMBOLS

20 Formwork support

21 Formwork body 35

22 Formwork panel

23 Adjustment bodies

24 support bodies

25 Fasteners

26 Ground nail 40

27 Anchoring base

28 Adjustment device

29 Joint

30 Angle of inclination (double arrow) 45

31 Distance (double arrow)

32 frames

33 Basic profile

34 Support profile

35 Square tube 50

36 Diagonal profile

37 Pipe

38 square tube

39 Footplate

40 Base plate 55

41 Threaded rod

42 external threads of 41

43 Support body part

4 4 Internal thread of 4 3

45 Actuator 60

46 Longitudinal axis of 41

47 Longitudinal axis of 44 4 8 End of 41

49 Opening of 23

50 slot

51 internal dimensions of 4 9

52 External dimensions of

53 Wall part of

54 Passage opening

55 Square nut

56 Exterior area of

57 Interior surface of

58 Level

59 Connection profile

61 Bore

62 Bore

63 Bore

64 Approach

65 Lock nut

66 U-profile

67 legs

68 Mounting flange

69 Disc

70 external threads from

71 Level

72 outer diameter of

73 Distance

74 Distance

75 joint

76 Angle of inclination (double arrow)

Claims (10)

1. Formwork support for supporting a formwork body, in particular a formwork panel, with an adjusting body to which the formwork body can be fastened and which, for support on an anchoring base, is connected to a support body which can be fastened to the anchoring base with the aid of fastening means, such as ground nails or screws, wherein the support body and the adjusting body are connected to one another via at least two adjusting devices which are connected to the adjusting body via spaced-apart joints in such a way that the adjusting body can be adjusted relative to the support body with the aid of the adjusting devices both at a different angle of inclination and at a different distance with an essentially constant angle of inclination, characterized in that the support body ( 24 ) freely supports the adjusting body ( 23 ), which can be adjusted relative to it in its inclination (double arrow 30 ) and its distance (double arrow 31 ), by means of the adjusting devices ( 28 ). 2. Formwork support according to claim 1, characterized in that the support body ( 24 ) is a rigid frame ( 32 ). 3. Formwork support according to claim 2, characterized in that the frame ( 32 ) is designed with a base profile ( 33 ) assigned to the anchoring base ( 27 ) and a support profile ( 34 ) arranged substantially perpendicular to this for the adjusting body ( 23 ) and preferably a diagonal profile ( 36 ) stiffening the base profile ( 33 ) and the support profile ( 34 ). 4. Formwork support according to claim 3, characterized in that the base profile ( 33 ) and the optionally provided diagonal profile ( 36 ) are firmly connected to a tube ( 37 ) open on both sides, preferably a square tube ( 38 ), which is intended to enable the formwork support ( 20 ) to be attached to the anchoring base ( 27 ) by means of a ground nail ( 26 ) inserted through the tube ( 37 ). 5. Formwork support according to one of claims 2 to 4, characterized in that the frame ( 32 ) is provided with at least two spaced-apart foot plates ( 39 , 40 ) for supporting the formwork support ( 20 ) on the anchoring base ( 27 ), which can be anchored to the anchoring base ( 27 ) by means of the fastening means ( 25 ). 6. Formwork support according to one of claims 1 to 5, characterized in that the adjusting device ( 28 ) comprises a threaded rod ( 41 ) with an external thread ( 42 ) which is designed to match an internal thread ( 44 ) of a support body part ( 43 ), the threaded rod ( 41 ) being connected at one end to the adjusting body ( 23) via one of the joints (29 ) and at the other end having an actuating body ( 45 ) which enables manual rotation of the threaded rod ( 41 ) about its longitudinal axis ( 46 ) and consequently adjustment of the adjusting body ( 23 ) relative to the support body ( 24 ). 7. Formwork support according to claim 6, characterized in that the longitudinal axes ( 47 ) of the internal threads ( 44 ) of the support body parts ( 43 ) are arranged substantially parallel to one another. 8. Formwork support according to one of claims 6 or 7, characterized in that the threaded rod ( 41 ) is inserted with its end ( 48 ) pointing away from the actuating body ( 45 ) through an opening ( 49 ) of the adjusting body ( 23 ), the inner dimensions ( 51 ) of which are larger than the outer dimensions ( 52 ) of the threaded rod ( 41 ) in the insertion area, so that a play is formed which enables different angular positions of the threaded rod ( 41 ) relative to the adjusting body ( 23 ), wherein preferably the adjusting body ( 23 ) is attached to the threaded rod ( 41 ) by means of a fastening means which enables said play. 9. Formwork support according to claim 8, characterized in that the opening ( 49 ) is designed as an elongated hole ( 50 ). 10. Formwork support according to one of claims 6 to 9, characterized in that the support body ( 24 ) is designed with a square tube ( 35 ) designed as a support profile ( 34 ) for the adjusting body ( 23 ) with wall parts ( 53 ) arranged in pairs parallel to one another, wherein two of the opposite wall parts ( 53 ) are provided with through openings ( 54 ) through which the threaded rod ( 41 ) can be passed and that the support body part ( 43 ) is a hexagon or square nut ( 55 ) with outer surfaces ( 56 ) arranged in pairs parallel to one another, the distance between which is slightly smaller than the distance between the corresponding inner surfaces ( 57 ) of the parallel wall parts ( 53 ) of the square tube ( 35 ).