CA2002723C

CA2002723C - A device for connecting accessory parts to formwork panels

Info

Publication number: CA2002723C
Application number: CA002002723A
Authority: CA
Inventors: Johann Badstieber
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-12
Filing date: 1989-11-10
Publication date: 1999-08-03
Anticipated expiration: 2009-11-10
Also published as: CN1042750A; DE58901179D1; FI93981C; NO178384B; AU633519B2; LT3578B; DK164825B; US5265973A; RU2070261C1; NO911850L; HUT57867A; SG81492G; PT92272B; FI912300A0; DE3838489C1; CA2002723A1; ES2019854A4; ATE74990T1; DZ1371A1; IL92261A

Abstract

A device is useful for connecting accessory parts to formwork panels, compensating members or suchlike formwork members having stiffening webs or stiffening profiles on their side remote from the forming surface. The device has an essentially U-shape cross section, the U-areas having fastening locations, preferably bores, for the accessory parts such as booms, adjustable props, platform brackets or the like, and in the position of use, the U-crosspiece butts and is drawn tightly against a stiffening profile, and particularly against a cross web provided on this profile. At least one of the U-arms, and preferably both U-arms, has an extension extending over part of its length and projecting beyond the U-crosspiece on that side of the U-arms which faces the forming surface in the position of use. The extension is provided as protection against torsion and is adapted to be placed against a longitudinal side face of the stiffening profile and against the transition from the rearward or cross web to the longitudinal side face. The U-crosspiece of the device has at least one recess or hole - possibly even one open at the edge - for a fastening member to engage, preferably for the shank of a fastening member to pass through. It is thereby possible for the device to be anchored - in a torsion-proof manner, and in two orientations rotationally displaced through 90°, to a stiffening profile, so that the forces and moments encountered can be transferred well.

Description

2 0 0 2 7 ~ 3 23422-117 The invention relates to a device for connecting accessory parts to formwork panels, compensating members and such-like formwork members having stiffening webs or stiffening profiles on their side remote from the forming surface. The device has an essentially U-shaped cross section, the U-arms having fastening locations for accessory parts such as booms or the like, and in the position of use the U-crosspiece butts against a stiffening profile of the formwork.
Formwork for circular constructions is known from German Patent Specification No. 33 33 619, in which a chain of ties adjustable in length is provided on the girders shoring the forming surface. These ties in each case engage the girders of the form-work panels by way of connecting pieces having an approximately U-shaped cross section. These connecting pieces have fastening locations for individual ties in their U-arms remote from the formwork.
However these connecting pieces require further coupling members for engaging the stiffening girders or stiffening profiles, such coupling members being approximately U-shaped and embracing the stiffening girders. However, it is not possible for any accessory parts, such as stays directed towards the base, brackets or the like, to be fasten~d with these connecting pieces because they remain firmly connected to the individual ties.
The object underlying the invention is to create a device of the kind mentioned at the outset, with which any accessory parts such as booms, brackets, stays and the like can be fastened '' 2032723 to formwork panels quickly, simply and without any difficulty, whilst it is possible for the stiffening webs or stiffening pro-files to be selectively oriented either vertically or horizontally.
This seemingly contradictory object is accomplished in a device of the kind mentioned at the outset in that at least one of the U-arms has an extension extending over at least part of its length and beyond the U-crosspiece on that side of the U-arms which faces the forming surface in the position of use. This extension is provided as protection against torsion and is adapted to be placed against a longitudinal side face of the stiffening profile and against the edge or bend at the transition from a rearward web to the longitudinal side face of said stiffening profile. The U-crosspiece of the device has at least one hole for the passage of a shank of a fastening member, said fastening member having a head or the like projecting radially beyond the shank, at least to one side, and being adapted to be inserted into the stiffening profile, from the side remote from the forming surface, through an opening in the stiffening profile, and to be anchored to the latter with its head. At the end of the fastening member remote from its head it is provided with a counter-stop for anchorage to the U-shaped device.
In a seemingly inconsistent manner at least one of the U-arms of U-shaped device projects beyond the U-crosspiece, but thereby permits torsion-proof coupling onto the stiffening profile with the aid of the fastening member. Therefore any accessory parts can in turn be fastened to this device without any difficulty, and without any additional measures for such protection against torsion.
This invention relates to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said cross-piece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, said fastening element comprising a shaft B

-and said first means including a head on said shaft for abutment with the first formwork component so as to urge the latter towards said joining element, said head projecting radially outward of said shaft and being hammer-shaped so that said head can be passed through a slot in the first formwork component when said head has a first orientation and can engage the first formwork component behind the slot when said head is rotated from the first orientation to a second orientation, and said second means being spaced from said head.
This invention also relates to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and - 3a -B

-said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, said crosspiece being provided with receiving means for said fastening element.
This invention further relates to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and - 3b -B

~ -said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, the first formwork component including a stiffener having a pair of spaced arms and a transverse element connecting the arms to one another, the transverse element having first receiving means for said fastening element, and the first receiving means being spaced from each of the arms by a predetermined distance as considered in a direction from one of the arms to the other, said crosspiece having second receiving means for said fastening element, and said second receiving means being spaced from said shoulder by said predetermined distance as considered in a direction parallel to said legs and said crosspiece so as to permit alignment of the first receiving means and said second receiving means when said shoulder abuts the first formwork component.
This invention relates to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions - 3c -B

project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element arranged to bear against said fastening element and against said joining element so as to lock said fastening element to said joining element.
This invention also relates to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, - 3d -B

-and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, said second means comprising a slit, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element for releasably locking said fastening element to said joining element, said locking element comprising a wedge receivable in said slit.
This invention further relates to a device for connecting first and second formwork components to one - 3e -,.~
. .

another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation;
and a fastening element for securing the joining element to the first formwork component, said fastening element including a shaft, first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and said first means including a head carried by said shaft, said fastening element further comprising a locking member for engagement in a slot of the first formwork component so as to prevent rotation of said fastening element, and said locking member being mounted on said shaft adjacent to said head, at least one of said first portions being provided with - 3f -connecting means for establishing a connection with the second formwork component.
This invention relates as well to a device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation, each of said first portions having a first end face directed towards said second portions and a second end face directed away from said second portions, and each of said first portions being provided with a chamfer between the respective end faces; a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element - 3g -B~' and the first formwork component towards one another and second means for establishing a connection with said joining element, said second means comprising a slit disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another, at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element receivable in said slit to lock said fastening element to said joining element, each of said first portions being provided with cutouts for said locking element and with connecting means for establishing a connection to the second formwork component, and said chamfers being spaced from said cutouts and said connecting means.
The use of an extension extending over only part of the length of the U-arms has the significant advantage that the device can be fixed to the stiffening profiles also when it is turned through 90~, i.e. with U-arms running approximately at right angles to the longitudinal extent of the stiffening profiles. Therefore these stiffening profiles can run both horizontally and vertically and the device according to the invention can be used for such formwork panels as are to be usable in an orientation rotated through 90~, or which have intersecting stiffening profiles.
The fastening member for anchoring the device to a stiffening profile may have a hammerhead which in one position of orientation is adapted to be inserted through an oblong hole in the cross web of the stiffening profile, and in the - 3h -~' 200;2723 twisted condition - e.g. rotated through 90~ - engages behind the edges of the oblong hole. This permits the device, and a stiffening profile provided with corresponding oblong openings, to be coupled particularly quickly and effectively.
For particularly effective protection against torsion, together with the possibility of being able to conduct forces and moments of commensurate magnitude into the stiffening girders, and of being able to implement the device with equal benefit in two positions rotationally displaced through 90~, it is appropriate if both U-arms of the device have extensions projecting beyond the U-crosspiece, and if these extensions are shortened B

relative to the total length of the U-arms so that they, together with the U-crosspiece, form a shoulder - preferably an approximate-ly steplike one - and are located beyond the ad~acent region of the hole for the fastening member. In one fitting position, these two extensions of the U-arms may engage over the longitudinal sides of the stiffening profile and thus provide good and very secure protection against torsion in both conceivable directions of rotation, which permits the transfer of high forces and moments.
In a position rotationally displaced through 90~, the shoulders of the shortened U-arms can bGth be placed against a common long-itudinal side of a stiffening profile, which again provides pro-tection against torsion and the possibility of transferring moments, the distance of the two extensions from one another and from the fastening member producing effective and torsion-proof anchorage of the device onto the stiffening profile, the fastening member thereby being secured in position relative to the stiffen-ing profile at at least three points. This arrangement and configuration of the device is therefore particularly desirable.
The shoulder between the U-crosspiece and the extension of the U-arms may be placed against the longitudinal side of the stiffening profile, and may be situated at that distance from the hole for the fastening member which the oblong hole or suchlike opening in the stiffening profile has from the edge of the longitudinal web of this profile. It automatically follows from this that the means protecting against torsion of the device take effect in both fitting positions rotationally displaced -' Z002723 through 90~, because when fixed by the fastening member they butt against the longitudinal side of the stiffening profile in each case.
The better the device is urged against a stiffening profile, the more effective is the protection against torsion. It may be appropriate for this purpose if the counter-stop serving for the fastening member and acting upon the U-crosspiece of the device is adapted to be braced against the latter. This counter-stop may engage the shank of the fastening member in a releasable manner. In this way the counter-stop can also be affixed subse-quently, when the fastening member and its head have been inserted through the opening in the stiffening profile and twisted.
A transverse slit through the shank of the fasten-ing member at the end thereof remote from the head, and a wedge adapted to be inserted into the transverse slit, may be provided as the counter-stop. In the position of use, the transverse slit preferably extends right into the hole in the crosspiece of the device. Thereby a concrete solution is simply provided for bracing the counter-stop against the U-crosspiece of the device. The wedge only has to be driven in deep enough to exert pull on the shank, and thereby also on the head of the fastening member, in order to urge the U-crosspiece of the device against that of the stiffening profile.
In order to minimize the length of the fastening member and thereby the overall size of the device, it is advan-tageous if, in the position of use, the transverse slit in the shank of the fastening member is disposed between the U-arms of the device on that side of the U-crosspiece which is remote from the forming surface, and that the U-arms of the device have open-ings at the level of the transverse slit for passage of the anchoring wedge therethrough. The wedge can therefore be inserted through these openings in order to reach its position of use in the transverse slit of the shank of the fastening member.
In a further desirable embodiment of the device, the cross section of the transverse slit for the wedge is arranged on the shank of the fastening member at an angle - preferably 45~
- relative to the hammerhead of the latter, and the openings in the U-arms of the device are arranged so as to be displaced in such a way and/or extend laterally in such a way that the wedge passes at an angle from the opening in one arm, through the anchor-ing slit of the fastening member, to the other opening. The wedge can therefore be driven in with a slanting fit in such a manner as to be held in its position of use by gravity. This not only makes fitting easier, but also counteracts any unintentional loosening.

In a further advantageous embodiment the openings for the wedge in the U-arms of the device extend laterally in such a way, or so many openings are provided side by side, that the wedge can be inserted from both sides at an angle to the surface of the U-arms, in at least two positions preferably rotationally staggered through 90~. This allows application of the device to stiffening profiles in two positions varying by 90~, depending on ~- 2002723 whether the stiffening profiles run approximately vertically or horizontally. In each of these cases the wedge can pass from top to bottom at an angle as opposed to horizontally, or even from bottom to top.
The fastening locations for the releasable attach-ment of accessory parts may take the form of recesses, preferably holes, and may be arranged on the U-arms of the device, in spaced relationship to the openings for the anchoring wedge. Mention is however made at this point that a nut may also be provided by way of a thread on the shank as a counter-stop, should the U-arms not offer sufficient room for the openings for the wedge on the one hand and for the fastening locations on the other hand.
A fastening location may be provided on each U-arm and both fastening locations may preferably be of the same shape and in a corresponding position, in particular taking the form of bores for a bolt or the like. The latter can then traverse a por-tion of an accessory part disposed between the two U-arms and can be anchored to the U-arms on both sides of the engaged portion of the accessory part.
The fastening member of the device is secured par-ticularly simply and well if the surfaces of the head of the connecting bolt which face the inside of the U-cross web of the stiffening profile slant outwardly from the shank to conform with a bead-like or channel-like depression of the U-cross web of the stiffening profile. This at the same time increases the rigidity of the stiffening profile, so that it better lends itself all to ~ 2002723 the attachment of accessory parts by way of the inventive device.
It is expedient if the extensions of the U-arms are integral therewith. The U-crosspiece of the device may be fitted, particularly welded, between the U-arms and extensions thereof, and its surface which rests against the outer web of the stiffening profile in the position of use, may appropriately be approximately flush with the non-extended area of the U-arms. This produces a rigid design, particularly of the U-shaped part of the device according to the invention.
Mention is made that the hole for the fastening member is appropriately a bore, because this can be made particular-ly simply and also accommodates a correspondingly simple round shank of the fastening member. However this bolt-like fastening member may have between its shank of preferably round cross section and the angular surfaces arranged in a roof-shaped manner on the underside of its head, a square area as protection against torsion, the square area serving to engage the recess in the cross web of the stiffening profile. This makes it easier for the trans-verse slit for the anchoring wedge to retain its position after the head of the fastening member has been inserted and fixed, and thus makes it easier for the wedge to be inserted at an angle from th~ side.
In order to save weight, the U-arms of the device may be slanted between their end faces and their edges remote from the crosspiece, the slants being beyond the openings for the anchoring wedge and the holes for fastening accessory parts.

A device, with which any accessory parts can be attached to formwork members having corresponding stiffening webs and stiffening profiles, whilst these accessory parts may be ad-justable props, platform brackets, climbing brackets, supporting jacks, base stays or booms, results from the features and steps described above being combined singly or severally. The device can be fitted in two positions, preferably rotationally displaced through 90~, so that the device together with its U-arms and fastening locations can in each case be oriented in such a way as is required to attach the accessory parts, regardless of whether the stiffening profiles of the formwork panels are oriented ver-tically or horizontally. This device can also be arranged on floor formwork with corresponding stiffening profiles. An efficient and firm connection between the accessory parts and the formwork member is produced in every position of attachment, it being pos-sible for not only forces, but also moments to be transferred, owing to the good protection against torsion.
The invention with its principal features is des-cribed more specifically below in one exemplified embodiment with the aid of the drawings in which, Figure 1 is an exploded view of the device according to the invention before being fitted to a horizontally oriented stiffening profile of a vertical formwork panel/ and before having an accessory part, in this case an adjustable prop, attached to it, Figure 2 is a rear view of the device in the fitted condition, the horizontal stiffening profile and the accessory part being omitted in the interest of clarity, but an oblong hole in the stiffening profile being indicated, Figure 3 is a section through the U-crosspiece of the device and through that area of a stiffening profile which is proximate to this device, as well as a view of a U-arm and the extension thereof extending over only part of the length as pro-tection against torsion, Figure 4 is a side view of the entire device in an orientation for engaging a vertical stiffening girder or stiffen-ing profile and Figure 5 is a top view of the device in a position fitting a vertical stiffening profile, and in a position in which the two extensions extending over only part of the length of the U-arms of the device engage over the longitudinal side faces of the stiffening profile as protection against torsion.
A device designated generally as 1 serves for connecting accessory parts, for instance an adjustable prop 2, to formwork panels, compensating members or suchlike formwork members which are not shown in any detail in the drawings, and which have stiffening webs,girders or stiffening profiles 3 on their side averted from the forming surface. These stiffening profiles 3 are illustrated in complete cross section by way of example in Figure 1, and in Figures 3 and 5 with regard to the portion co-operating with the device.
It becomes clear by reference to Figure 1 and parti-cularly Figure 5 that the device 1 has an essentially U-shaped cross section and its U-arms 4 have fastening locations 5 for ' 2002723 accessory parts such as booms, adjustable props 2 or the like. In the position of use the U-crosspiece 6 butts against the stiffening profile 3 of the formwork, as illustrated in Figures 3 and 5.
In comparing Figures 2 and 3 on the one hand with Figures 4 and 5 on the other hand it is apparent that engagement can be made to a profile 3 by the device 1 in two different posi-tions rotationally displaced through 90~, or that fixation to profiles 3 varying 90~ in orientation is possible. At the same time the device 1 is well protected against torsion relative to the profile 3, so that the forces and moments to be transferred can be adequately conducted.
This is achieved by providing the U-arms 4 with an extension 7, in each case extending along part of their length and beyond the U-crosspiece 6 on that side of the U-arms which faces the forming surface in the position of use. These extensions 7 are provided as protection against torsion in both fitting posi-tions. In accordance with Figures 3 and 5, these extensions 7 are adapted to be placed in two different ways against the longitudinal side face 3a of the stiffening profile 3 and against the edge or bend at the transition from web 3b to the longitudinal side face 3a of the stiffening profile 3.
Additionally, the U-crosspiece 6 of the device 1 has a hole 8 for the passage of a shank 9a of a fastening member 9 also having a head 9b projecting radially beyond this shank 9a at least to one side, and in the exemplified embodiment to two sides.
This fastening member 9 is adapted to be inserted into the stiffening profile 3, head 9b foremost, from the side remote from the forming surface, through an opening 10 in the form of an oblong hole in the stiffening profile 3, and to be anchored to the latter with its head 9b in the manner shown in Figures 3 and 5.
The fastening member 3 has at the end remote from the head 9b, a counter-stop yet to be described for anchorage to the U-shaped device 1.
The fastening member 9 therefore has a hammerhead 9b for anchoring the device 1 to a stiffening profile 3. In the one orientation the hammerhead 9b is adapted to be inserted through the oblong hole 10 in the cross web 3b of the stiffening profile 3 and then twisted through 90~ in the illustrated embodiment to engaging behind the edges of the oblong hole 10, as indicated by dashed lines in Figure 2.
In comparing Figures 3 and 5 it is apparent that both U-arms 4 of the device 1 have extensions 7 stretching beyond the U-crosspiece 6 and that these extensions are shortened relative to the total length of the U-arms 4 in an identical manner and so as to be of identical size. Together with the U-crosspiece 6 the extensions 7 form an approximately steplike shoulder 11 (cf.
particularly Figures 3 and 4) and are situated beyond the neigh-bouring region of the hole 8 for the fastening member 9.
As shown in Figure 5 the extensions 7 can, with their own longitudinal expanse, directly engage the longitudinal sides 3a of the stiffening profile 3 as protection against torsion when the U-arms 4 and the stiffening profiles 3 have a conforming direction of orientation. In a fitting position turned through 90~, in accordance with Figures 1 to 3, the shoulder 11 between U-crosspiece 6 and extension 7, or rather the shoulder 11 between the non-extended area of the U-arms 4 and extension 7 of the U-arms, can serve to prevent torsion against the longitudinal side 3a of the stiffening profile 3, as will be clearly apparent from Figure 3. The shoulders 11 are situated at that distance from the hole 8 for the fastening member 9 which the oblong hole 10 in the stiffening profile 3 has from the longitudinal webs 3a of the latter or the beginning thereof adjacent to the cross web 3b.
Therefore, the shoulders 11 produce the desired protection against torsion and rest against the profile 3 in the position in which the U-arms 4 of the device 1 are applied to the profile 3 when they are rotationally displaced through 90~ relative to the longitudinal direction of the latter.
The previously mentioned counter-stop for the fasten-ing member 9 is adapted to be braced against the U-crosspiece 6 of the device 1 and against the fastening member, in order to urge the device 1 firmly against the profile 3 and to render operative the means protecting against or resisting torsion. It is advan-tageous if this counter-stop engages the shank 9a of the fastening member in a releasable manner. In the illustrated embodiment it is contemplated that a transverse slit 9c through the shank 9a of the fastening member 9 at the end thereof remote from the head 9b is provided, and that a wedge 12 fitting and being adapted to be inserted into this transverse slit 9c is provided as the counter-stop. In the position of use, the transverse slit 9c extends approximately into the hole 8 in the crosspiece 6 of the device 1. It is thereby ensured that, as the wedge 12 is driven in, the narrow side thereof facing the U-crosspiece 6 comes to rest against the U-crosspiece 6 and with the opposite narrow side can exert the desired pull on the shank 9a.
So that the device 1 does not become too large in size, and so that the lever arms applied to the profiles 3 by the device are not too great, the transverse slit 9c in the illustrated embodiment is disposed between the U-arms 4 and the U-arms 4 of the device 1 have openings 13 at the level of the transverse slit 9c for the anchoring wedge 12. These openings extend sufficiently far towards the formwork that the surface of the U-crosspiece 6 remote from the forming surface lies within the clearance of openings 13, so that the wedge 12 can rest against this surface of the U-crosspiece 6.
It is, however, also conceivable that the wedge may rest against the corresponding edge boundaries of the openings 13, particularly if and when the slit 9c does not extend right into the hole 8 or even beyond it.
It is evident from Figure 2 that the cross section of the transverse slit 9c for the wedge 12 is arranged on the shank 9a of the fastening member 9 at an angle of approximately 45~
relative to the hammerhead 9b of the latter. The openings 13 in the U-arms 4 extend laterally in such a way that the wedge 12 passes at an angle from one arm 4, through the anchoring slit 9c, ~- 2002723 to the other arm 4 and opening 13 thereof. The wedge can therefore be arranged so as to pass from top to bottom at an angle in both possible orientations of the device 1. This makes fitting easier, because initial insertion of the wedge is aided by gravity.
Furthermore the position of use is also maintained and secured better by gravity, and a wedge 12 is prevented from unintentionally dropping out. In addition, a retaining pin 14 may be provided at the narrow end of the wedge 12.
The openings 13 extend laterally in the longitudinal orientation of the U-arms 4 to such an extent that the wedge 12 can be inserted from both sides, at an angle to the surface of the U-arms 4, in two positions displaced 90~ from each other, so that it is unnecessary to pay any attention to the position of the transverse slit 9c when the fastening member 9 is inserted before-hand. Instead of correspondingly enlarged recesses or openings 13, several openings 13 side by side could also be provided in order to permit these two angular positions of the wedge 12.
In the illustrated embodiment, the fastening loca-tions 5 take the form of recesses or holes and are arranged on the U-arms 4 of the device 1, in spaced relationship to the open-ings 13 for the anchoring wedge 12. Figure 1 makes it clear that a fastening location 5 is provided on each U-arm 4 and both fastening locations 5 are of the same shape and in corresponding locations. Both fastening locations take the form of, e.g. bores for a bolt, which also passes through corresponding bores 15 in the adjustable prop which, in turn, can be fitted between the two U-arms 4. Therefore the coupling area and corresponding fastening location 15 of this adjustable prop 2 or of any other accessory part can be inserted between the U-arms 4 and anchored there using a bolt through all the fastening locations 5 and 15. The adjust-able prop can then absorb or transfer forces and moments which can be conducted by the device 1 into the profiles 3 in a desirable manner, without any risk of twisting or deflection. Conversely, forces emanating from the profiles 3 and the formwork panels can thus be transferred by way of the device 1 to such adjustable prop 2 or the like.
Although other solutions are also possible, the illus-trated embodiment contemplates that the extensions 7 of the U-arms 4 are integral therewith. The U-crosspiece 6 of the device 1 is fitted and welded between the U-arms 4 and extensions 7 thereof, its surface resting against the web 3b of the stiffening profile 3 in the position of use preferably being approximately flush with - or according to Figure 4 even jutting out slightly from - the non-extended area of the U-arms 4.
In the illustrated embodiment the hole 8 for the fastening member 9 is a bore, which is particularly easily made.
Figure 1 shows that the bolt-like fastening member 9 has between its shank 9a of round cross section and the angular surfaces arranged in a roof-shaped manner on the underside of its head 9b, a square area 9d as protection against torsion or twisting the square area 9d engaging the recess 10 in the cross web 3b of the stiffening profile 3. The angular surfaces on the . 23422-117 head 9b as well as this squared area 9d therefore stabilize the position of the fastening member 9, and thereby that of the wedge and of the entire device 1, and thus improve the transfer of forces and moments.
It is furthermore apparent from Figure 1 that the U-arms 4 of the device 1 may be slanted between their end faces 4a and their edges 4b remote from the crosspiece 6, the slanted edge being beyond the openings 13 for the anchoring wedge 12 and the holes 5 for fastening accessory parts 2. Weight is thereby saved and inconvenient projection of the device 1 relative to the profiles 3 and accessory parts 2 is limited as much as possible.
A device 1 serves for connecting accessory parts 2 to formwork panels, compensating members or suchlike formwork members having stiffening webs or stiffening profiles 3 on their side remote from the forming surface. The device 1 has an essen-tially U-shaped cross section, the U-arms 4 having fastening locations 5, preferably bores, for accessory parts 2 such as booms, adjustable props, platform brackets or the like, and, in the position of use, the U-crasspiece 6 butting and being drawn tight against a stiffening profile 3 and primar:ily against a cross web 3b provided on the latter. At least one of the U-arms 4, prefer-ably both U-arms 4, has an extension 7 extending over part of its length and beyond the U-crosspiece 6 on that side of the U-arms which face the forming surface in the position of use, such extension being provided as protection against torsion and being adapted to abut the longitudinal side face 3a of the stiffening profile 3 and the transition from the rearward web 3b to the longi-tudinal side face 3a. The U-crosspiece 6 of the device 1 has at least one recess or hole 8 - possibly even one open at the edge -for a fastening member to engage, preferably for the shank 9a of a fastening member 9 to pass through. It is thereby possible for the device 1 to be anchored - in a torsion-proof position and in two orientations rotationally displaced through 90~ - to a stiffen-ing profile 3, so that the forces and moments encounted can be transferred well.
One embodiment of significance to the invention is apparent primarily in Figure 5 and also in Figure 2. According to these, the extensions 7 are set somewhat at an angle to one another in comparison to the parallel U-arms 4, so as to conform to the trapezoidal shape of the stiffening profile 3 and the corresponding slanting orientation of the cross section of the side webs 3a of the stiffening profile 3. The inside dimensions of these exten-sions 7, set somewhat at an angle to one another, correspond to the outside dimensions of the two longitudinal webs 3a of the stiffening profile 3.
It is also apparent in the Figures that, in the posi-tion of use, the narrower area of the wedge 12 traverses a U-arm and recess 13 thereof, but the wider area of the wedge passes by the outside of the opposite U-arm and end face thereof or is even supported against the latter. It is therefore not necessary for the wedge to traverse both recesses 13 simultaneously, but always only one of them selectively.

Claims

1. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, said fastening element comprising a shaft and said first means including a head on said shaft for abutment with the first formwork component so as to urge the latter towards said joining element, said head projecting radially outward of said shaft and being hammer-shaped so that said head can be passed through a slot in the first formwork component when said head has a first orientation and can engage the first formwork component behind the slot when said head is rotated from the first orientation to a second orientation, and said second means being spaced from said head.

2. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, said crosspiece being provided with receiving means for said fastening element.

3. The device of claim 2, wherein said fastening element comprises a shaft and said first means includes a head on said shaft for abutment with the first formwork component so as to urge the latter towards said joining element, said head projecting radially outward of said shaft, and said second means being spaced from said head.

4. The device of claim 2, wherein said second portions are spaced from said receiving means.

5. The device of claim 2, wherein each of said second portions has a shoulder for abutment with the first formwork component in said second relative orientation.

6. The device of claim 2, wherein each of said second portions is substantially in register with the respective first portion.

7. The device of claim 6, wherein each of said second portions constitutes an extension of the respective first portion.

8. The device of claim 2, wherein said crosspiece constitutes an abutment for the first selected formwork component.

9. The device of claim 2, wherein said shoulder is step-shaped.

10. The device of claim 2, wherein said connecting means comprises a recess.

11. The device of claim 2, wherein said connecting means comprises an opening.

12. The device of claim 2, wherein each of said first portions is provided with connecting means for establishing a connection with the second formwork component.

13. The device of claim 12, wherein the respective connecting means are substantially mirror-symmetrical about a plane located essentially midway between said first portions.

14. The device of claim 2, wherein each of said first portions is integral with the respective second portion.

15. The device of claim 2, wherein said crosspiece is welded to said legs.

16. The device of claim 2, wherein said receiving means includes a bore.

17. The device of claim 2, wherein said first portions are substantially parallel to one another.

18. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component, the first formwork component including a stiffener having a pair of spaced arms and a transverse element connecting the arms to one another, the transverse element having first receiving means for said fastening element, and the first receiving means being spaced from each of the arms by a predetermined distance as considered in a direction from one of the arms to the other, said crosspiece having second receiving means for said fastening element, and said second receiving means being spaced from said shoulder by said predetermined distance as considered in a direction parallel to said legs and said crosspiece so as to permit alignment of the first receiving means and said second receiving means when said shoulder abuts the first formwork component.

19. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element arranged to bear against said fastening element and against said joining element so as to lock said fastening element to said joining element.

20. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, said second means comprising a slit, and at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element for releasably locking said fastening element to said joining element, said locking element comprising a wedge receivable in said slit.

21. The device of claim 20, wherein said crosspiece comprises receiving means for said fastening element and said slit extends into said receiving means when said fastening element urges the first formwork component and said joining element towards one another.

22. The device of claim 20, wherein said slit is disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another and at least one of said first portions is provided with a cutout for said wedge.

23. The device of claim 22, wherein said slit is situated at a predetermined level when said fastening element urges the first formwork component and said joining element towards one another and said cutout is disposed at least approximately at said predetermined level.

24. The device of claim 20, wherein said fastening element comprises a shaft and said first means includes a head on said shaft, said head being elongated and hammer-shaped so that said head can be passed through a slot in the first formwork component when said head has a first orientation and can engage the first formwork component behind the slot when said head is rotated from the first orientation to a second orientation, and said slit being provided in said shaft and disposed in a plane which is inclined with respect to the direction of elongation of said head.

25. The device of claim 23, wherein said plane and said direction define an angle of about 45 degrees.

26. The device of claim 20, wherein said slit is disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another and at least a selected one of said first portions is provided with a cutout for said wedge, said cutout being designed so that said wedge can traverse said selected first portion when said fastening element urges the first formwork component and said joining element towards one another and said wedge is received in said slit so as to extend along a direction which is inclined to said selected first portion.

27. The device of claim 20, wherein said slit is disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another and said first portions are provided with cutouts for said wedge, the number of cutouts or the sizes of said cutouts being such that said wedge can traverse at least one of said first portions when said fastening element urges the first formwork component and said joining element towards one another and said wedge is received in said slit so as to extend along either of two directions which are oppositely inclined to said first portions.

28. The device of claim 27, wherein said directions define an angle of about 90 degrees.

29. The device of claim 20, wherein said slit is disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another and said one first portion is provided with a cutout for said wedge, said cutout being spaced from said connecting means.

30. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation; and a fastening element for securing the joining element to the first formwork component, said fastening element including a shaft, first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, and said first means including a head carried by said shaft, said fastening element further comprising a locking member for engagement in a slot of the first formwork component so as to prevent rotation of said fastening element, and said locking member being mounted on said shaft adjacent to said head, at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component.

31. The device of claim 30, wherein said locking member is square or rectangular.

32. The device of claim 31, wherein said shaft is circular.

33. A device for connecting first and second formwork components to one another, comprising a joining element which includes a pair of spaced legs each having a first portion and a second portion, and a crosspiece connecting said legs to one another, said crosspiece being arranged such that said first portions project beyond a first side of said crosspiece and said second portions project beyond an opposite second side of said crosspiece to thereby permit said second portions to embrace part of the first formwork component and prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have a first relative orientation, at least one of said second portions having a shoulder for abutment with the first formwork component in a second relative orientation of the first formwork component and said joining element so as to prevent relative rotation of the first formwork component and said joining element when the first formwork component and said joining element have said second relative orientation, each of said first portions having a first end face directed towards said second portions and a second end face directed away from said second portions, and each of said first portions being provided with a chamfer between the respective end faces; a fastening element for securing the joining element to the first formwork component, said fastening element including first means for urging said joining element and the first formwork component towards one another and second means for establishing a connection with said joining element, said second means comprising a slit disposed between said first portions when said fastening element urges the first formwork component and said joining element towards one another, at least one of said first portions being provided with connecting means for establishing a connection with the second formwork component; and a locking element receivable in said slit to lock said fastening element to said joining element, each of said first portions being provided with cutouts for said locking element and with connecting means for establishing a connection to the second formwork component, and said chamfers being spaced from said cutouts and said connecting means.