FR3029550A1 - DEVICE FOR TEMPORARILY ASSEMBLING ELEMENTS ON A BEAM OF BUILDING STRUCTURE - Google Patents

Abstract

This device (1) comprises a piece (10) bearing against the beam, two movable parts (6) hook-shaped, a crosspiece (7) for supporting parts (6) and means (8, 9) of moving this crossbar (7) relative to the support piece (10). According to the invention, each hook-shaped piece (6) has an inclined wall (15) extending downwards and outwards of the device (1); - The mounting position of each piece (6) on said crossbar (7) is such that each inclined wall (15) is in line with the corresponding edge of the support piece (10), and - the means of displacement (8, 9) enable the crossmember (7) to move between a position of contact of said inclined walls (15) with the corresponding edges of the support piece (10) and a position away from said inclined walls (15). ) with respect to the corresponding edges of the support piece (10).

Description

The present invention relates to a device for temporarily mounting elements on a building structure beam. When creating a floor of a building floor, it is conventional to install, on the walls to receive the floor, structural beams, called beams "Doka" ®, section "I" (capital I) ), that is to say comprising a central core and two wings connected to the ends of this soul, perpendicular thereto; these beams are intended to receive prefabricated floor slabs which are themselves intended to receive a cast concrete slab.

During this work, it is necessary to position and maintain in position one or more shuttering boards laterally delimiting the casting space of the slab, and to ensure the safety of personnel performing this task. It is known for this purpose, in particular by the document No. DE 202 00 6019268 Ul, to provide temporary mounting devices for such a formwork board and railing posts on a beam as mentioned above. Some existing mounting devices of this type do not give complete satisfaction, being relatively long and tedious to handle, and not always very practical to use. Other devices are faster handling but have the disadvantage of risking, after a number of uses or because they are prone to fouling, not being able to be perfectly immobilized with respect to the beams. The object of the present invention is to overcome these disadvantages by providing such a mounting device which is both simple and quick to handle, not subject to a reduction in the clamping force that they allow or to fouling, and which are of relatively simple structure to manufacture. The document DE DE 101 27641 A1 describes a device comprising: a support piece against the upper wing of the beam, two hook-shaped parts movable between a position of separation from one another , allowing the engagement of the device on the upper flange of the beam, and a position of approaching one another, allowing the hooking of the upper flange, - a support crosspiece of the hook-shaped parts, and means for moving this crosspiece relative to the support piece, allowing the upper flange to be clamped between the support piece and the hook-shaped pieces with these hook-shaped pieces being held in their shape; 3029550 2 approximation position, and thus allowing the immobilization of the device relative to the beam. This device does not appear to achieve perfectly the above goal. The device concerned by this patent application is usable with a building structure beam, comprising a bearing face and an opposite face; this device comprises, in a manner known per se: a support piece against said bearing face; two hook-shaped parts movable between a spacing position 10 of one another, allowing the device to be engaged on the beam, and a position of approaching one another, in which these hook-shaped parts are able to come into engagement with said opposite face; a support crosspiece for the hook-shaped parts, and means for moving this cross-member with respect to the support piece, enabling the beam to be clamped between the support piece and the hook-shaped pieces. with maintaining these hook-shaped parts in their position of approach, and thus allowing the immobilization of the device relative to the beam. According to the invention, each hook-shaped piece has, between its portion connected to said cross-member and its hook-shaped part, an inclined wall extending downwards and outwards from said connected part. said cross member to said hook-shaped portion; the mounting position of each hook-shaped piece on said cross-member is such that each inclined wall is in line with the corresponding edge of the support piece, and the displacement means allow the traverse to move between a position of contact of said inclined walls with the corresponding edges of the support piece, wherein these inclined walls bear against these edges and form spacing ramps of the hook-shaped parts of each other, thus placing these hook-shaped pieces in their spaced position, and a position away from said inclined walls with respect to the corresponding edges of the support piece, in which the hook-shaped pieces come into position approximation by their own weight.

It will be understood that the term "downward and outward of the device" refers to the device as it can be viewed while it is placed on a beam; "downwards" therefore means "in the direction of the hook-shaped parts which comprise the hook-shaped parts, and" outwards "means away from a median longitudinal plane of the device, c that is to say the plane to which said hook-shaped parts are symmetrically arranged, so that it is sufficient to manipulate said moving means so as to cause the inclined walls to bear against the edges of the the support piece to separate the hook-shaped parts from each other and to bring them to their spacing position, the hook-shaped parts are held in this position, and no further action on them is necessary when the device is put in place on the beam Once this installation has been carried out, by simply placing the device on said support face that the beam comprises, said moving means are manipulated so as to exclude the walls inclined edges of the support piece, which causes the hook-shaped parts to be brought closer to one another under the effect of their weight, to their approaching position, and therefore to come in engagement with said opposite face that includes the beam. Said displacement means are manipulated until the beam is clamped between the support piece and the hook-shaped pieces. When the beam has a section "T" or "I" (capital I), that is to say 20 comprises a central core and one or two wings connected to this soul, said opposite face is generally constituted by two sub-faces formed by a wing of the beam, on both sides of the soul. Preferably, said displacement means comprise a threaded rod and a nut engaged with this threaded rod. According to a preferred embodiment of the invention in this case: - the threaded rod is axially connected to the support member but movable in rotation relative thereto; the nut is fixed to the cross-member, and the threaded rod comprises a member facilitating its actuation in rotation, such as a nut or a knurled knob. Preferably, the support piece has returns along its aforementioned edges, intended to extend along the side walls of the beam, that is to say the walls of this beam extending between said face support and said opposite face.

These returns allow a wedging of the support piece relative to the beam, which is generally useful and particularly when said displacement means 3029550 4 comprise a threaded rod and a nut that must be screwed on. one with respect to the other, and thus exert on the device forces tending to rotate this device relative to the beam. Preferably, at least one hook-shaped part is removably assembled with respect to the cross-member, so that it can easily be interchanged. This interchange makes it possible either to replace this hook-shaped piece if it is damaged, or to adapt the hook-shaped pieces to a particular type of beam.

Preferably, in this case of possibility of interchange: - said cross comprises, at its end facing the removable hook-shaped part, two notches arranged on two opposite sides of this end; said one piece in the form of a detachable hook comprises an inverted "T" shaped slot, forming a lower slot adapted to allow said end to pass therethrough, and an upper portion adapted to receive only the portion of said end; the cross member extending between said notches. The hook-shaped piece is thus retained on the cross member by its own weight.

The hook-shaped pieces may be sized to engage around an upper flange that includes the beam. When the beam also includes a lower wing, they may also be sized to engage around this lower flange of the beam. The invention will be well understood, and other features and advantages thereof will become apparent with reference to the accompanying schematic drawing; this drawing represents, by way of non-limiting example, a preferred embodiment of the device concerned. Figure 1 is a perspective view through a front side of this device, while the latter is placed on a beam; Figure 1A is a partial view, similar to Figure 1, in which a hook-shaped part has been separated from the rest of the device; Figure 2 is a view similar to Figure 1, three-quarter rear; FIGS. 3A to 3D are views of the device and the profile beam, during four successive phases of mounting the device on the beam; and FIG. 4 is a view of the device similar to FIG. 3C, while this device is equipped with different hook-shaped parts.

Figures 1 to 2 show a device 1 for temporary assembly of a shuttering board and a railing post (not shown) on a beam 50 of building structure. The beam 50 is a "Doka" type beam, with an "I" section (capital I), that is to say comprising a central core 51 and two wings 52 connected to the ends of this core, perpendicular to it. When producing a floor of a building floor, such beams 50 are placed on walls to receive the floor and are intended to receive prefabricated floor slabs which are themselves intended to receive a concrete slab 10 casting. Each device 1 has rectilinear edges 2, intended to receive and position said shuttering board, and an upper tube 3 intended to receive a guardrail post. The device 1 comprises a base piece 5, two pieces 6 in the form of a hook, a crosspiece 7, and a threaded rod assembly 8 - nut 9 for moving the cross member 7 relative to the base piece 5. The piece of base 5 comprises a support part 10 against the upper flange 52 of the beam and two parallel walls 11. The support piece 10 is intended to be fittedly engaged on the upper flange 52, and for this purpose a rectangular main wall 20, slightly wider than the width of the wing 52 and two returns connected to its longitudinal edges, intended to extend along the side walls of this wing. On its upper face, the support piece 10 comprises a hole for receiving the lower end of the threaded rod 8 and a structure 12 through which this threaded rod 8 passes, this hole and this structure 12 allowing the rod to be mounted. threaded 8 on the piece 10 such that the rod is axially connected to the piece 10 but is rotatable relative to this piece. The rod 8 may for example, below the wall of the structure 12 traversed by the rod 8, be traversed by an axial pin immobilization. The parallel walls 11 have a rectangular triangle shape; two of their 30 sides are perpendicular to the support piece 10 and form the rectilinear edges 2 above. They receive between them the tube 3, which they allow the attachment to the rest of the device 1. Each hook-shaped piece 6 comprises a portion intended to be connected to the cross member 7, a hook-shaped portion, and, between these parts , an inclined wall 15.

The portion intended to be connected to the crosspiece 7 comprises a light 16 "T inverted", more particularly visible in Figure 1A. This light 16 forms a lower slot capable of allowing the passage of the corresponding end of the cross member 7 through it, and an upper portion adapted to receive only the portion of this end of the crosspiece extending between two notches. 17 The hook-shaped parts 6 are thus able to be engaged on the cross-member 7 by virtue of said lower slot, up to the notches 17, then to translate downwards under the effect of their own weight, which ensures their retention 10 on the crossbar 7; they can therefore be assembled to the cross member 7 in a removable manner, so that it can easily be interchanged. Each notch 17 has a width greater than the thickness of the part 6, and is dimensioned so as to allow this part 6 to be angularly movable with respect to the crosspiece 7. This mobility is between a spacer position of a part 6 relative to the other part 6, visible in Figures 3A and 3B, for the engagement of the device 1 on the beam 50, and a position of approaching the parts 6 of one another, visible on 3C and 3D, allowing the engagement of said hook-shaped portions behind the undersides that forms the upper wing 52 (3C or 3D). When these parts 6 are dimensioned accordingly, said hook-shaped portions engage behind the lower flange 52 (FIG. 4). Most of the parts 6 are below the crosspiece 7, these parts 6 tend to be of themselves in the approaching position, under the effect of their weight.

Each inclined wall 15 extends, when the workpiece 6 is mounted on the device 1, downwardly and outwardly of the device 1, from said portion connected to said crossbar 7 to said hook-shaped portion. It will be understood that this expression "towards the bottom and towards the outside of the device" refers to the device 1 such that it can be considered while it is placed on a beam 50; "downwards" therefore means "towards the hook-shaped portions, and" outwardly "means away from a median longitudinal plane of the device 1, i.e. the plane to which said parts 6 are symmetrically arranged The notches 17 are arranged at locations in the cross-member 7 such that each inclined wall 15 is in line with the corresponding longitudinal edge 30 of the bearing piece 10, that is to say the edge formed by this longitudinal edge and by the aforementioned return 7. The crossbar 7, in addition to the notches 17, has the nut 9 attached thereto. comprises, in practice, the nut 20 being manipulated so as to cause the inclined walls 15 to bear against the edges of the support piece 10 to move the pieces 6 away from one another; the other and bring them to their position of spacing, against their weight (Figure 3A the hook-shaped parts are held in this position, and no further action is necessary on them at the time of the placement of the device 1 on the beam 50. Once this implementation is carried out (FIG. ), the nut 20 is manipulated to move the inclined walls 15 away from the edges of the support piece 10, which causes the parts 6 to approach one another under the effect of their weight ( 3C), to their position of approach 15, and therefore to come into engagement behind the undersides that forms the wing 52 with the core 51 of the beam. The nut 20 is manipulated until the wing 52 is clamped between the support piece 10 and the pieces 6 (FIG. 3D). The invention thus provides a device 1 for temporary assembly of elements on a beam 50 of building structure, which is both simple and quick to handle, not subject to a reduction in the clamping force that it allows, not subject to fouling, and which is relatively simple structure to manufacture. The invention has been described above with reference to an exemplary embodiment; it goes without saying that it is not limited to this embodiment. 25

Claims (8)

REVENDICATIONS1. Device (1) for temporary assembly of elements on a beam (50) of building structure, this beam (50) comprising a bearing face and an opposite face; the device (1) comprises: - a piece (10) of support against said bearing face; two pieces (6) in the shape of a hook, movable between a position spaced from each other, allowing the engagement of the device (1) on the beam (50), and a position of approaching one on the other, in which these hook-shaped parts (6) are able to come into engagement with said opposite face; a crosspiece (7) for supporting the hook-shaped parts (6) and means (8, 9) for moving said crossmember (7) with respect to the support piece (10), allowing clamping of the beam (50) between the support piece (10) and the hook-shaped pieces (6) holding these hook-shaped pieces (6) in their approach position, and thus allowing the immobilization of the device (1) with respect to the beam (50); characterized in that: - each hook-shaped piece (6) has, between its part connected to said cross-member (7) and its hook-shaped part, an inclined wall (15) extending downwards and towards the outside the device (1) from said portion connected to said crossbar (7) to said hook-shaped portion; the mounting position of each hook-shaped piece (6) on said cross-member (7) is such that each inclined wall (15) is in line with the corresponding edge of the support piece (10), and the displacement means (8, 9) enable the cross-member (7) to move between a position of contact of said inclined walls (15) with the corresponding edges of the bearing piece (10), in which these inclined walls ( 15) bear against these edges and form spacing ramps of the hook-shaped parts (6) of each other, thereby placing these hook-shaped parts (6) in their spaced position, and position of removal of said inclined walls (15) vis-à-vis the corresponding edges of the support piece (10), wherein the hook-shaped parts (6) come into approaching position by their own weight. 302 95 50 9 2. Device (1) according to claim 1, characterized in that said moving means comprise a threaded rod (8) and a nut (9) engaged with this threaded rod. 3. Device (1) according to claim 2, characterized in that: - the threaded rod (8) is axially connected to the support member (10) but rotatable relative thereto; - The nut (9) is fixed to the crossbar (7), and - the threaded rod (8) comprises a member facilitating its actuation in rotation, such as a nut (20) or a knurled knob. 10 4. Device (1) according to one of claims 1 to 3, characterized in that the support piece (10) has returns along its edges, intended to extend along the side walls of the beam (50). 5. Device (1) according to one of claims 1 to 4, characterized in that at least one piece (6) hook-shaped is removably assembled 15 relative to the crossbar (7). 6. Device (1) according to claim 5, characterized in that: - said crosspiece (7) comprises, at its end facing the piece (6) in the form of detachable hook, two notches (17) arranged on two opposite sides from this end; 20 - said one piece (6) in the form of a removable hook comprises an inverted "T" slot (16), forming a lower slot adapted to allow the passage of said end through it, and an upper portion adapted to receive only the portion of said end of the cross member (7) extending between said notches (17). 25 7. Device (1) according to one of claims 1 to 6, used with a beam comprising a central core and one or two wings connected to the core, characterized in that the pieces (6) in the form of a hook are dimensioned for engage around the upper flange (52) of the beam (50). 8. Device (1) according to one of claims 1 to 6, used with a beam comprising a central core and two wings connected to this core, characterized in that the pieces (6) in the form of hook are dimensioned for s engage around the lower flange (52) of the beam.