FR3034120A1 - HAMMER WITH ARTICULATED CONNECTION TERMINALS - Google Patents

Abstract

Support secondary beam (1) adjustable in length (L) having a first (9) and a second (10) pivoting connection structures at its ends (2, 3).

Description

The present invention relates to the field of modular support frames for supporting a slab formwork or the like, and more particularly relates to a secondary support beam, intended to be arranged between two primary beams to form a modular support frame to support a formwork of slab or the like. An example of a modular supporting framework for supporting slab formwork or the like is illustrated in FIG. 1 of document FR 2 900 176 A1. Such a framework comprises primary beams carried by props. Between the primary beams are arranged secondary support beams. To form a slab or the like on the top of the modular framework, wooden plywood plates are placed on the upper bearing surfaces of the primary beams and secondary support beams. The concrete slab or the like is then poured onto the plywood plates. After drying, the concrete slab or the like is self-supporting, so that the modular support frame can be removed. In a known manner, a secondary supporting beam extends in a first longitudinal direction between a first end and a second end, and comprises: an upper bearing surface defining a carrying plane intended to carry the slab formwork or the like a first connection structure, arranged at a free end of the first section and adapted to be fixed to a respective primary beam or to a strut, a second connection structure, arranged at a free end of the second section and adapted for to be attached to a respective primary beam or a forestay. As taught in EP 2 754 778 A1, the secondary support beam may comprise length adjustment means. These means allow to freely adjust the length of the secondary support beam to adapt to a specific gap between two primary beams of a modular support frame to support a slab formwork or the like. For reasons of architectural aesthetics, more and more buildings have sections of wall that have between them angles different from 90 °, as shown in Figure 1. In this case, the wall M1 forms an angle Al greater than 90 ° with the M2 wall panel. The wall panel M2 forms an angle A2 greater than 90 ° with the wall panel M3. The wall panel M3 is connected to a wall 2 at an angle A3 greater than 90 °. The M4 wall panel forms a 90 ° angle A4 with the wall section Ml. When a modular OMS support framework for supporting a slab formwork or the like is set up, as illustrated in FIG. 1, the secondary support beams P2A to P2X are arranged perpendicular to the primary beams P1A to P1D which are parallel to the M1 wall pan. As a result, there remains a right triangle TR1 empty between the wall panel M2, the primary beam P1 B and the secondary support beam P2F. And there remains an empty TR2 trapezium between the wall panel M3, the secondary support beam P2L and the primary beams P1B and P1C. The P2X secondary support beam runs along the M4 wall panel which is perpendicular to the wall panel M1. To cast the slab, plywood plates are placed on the secondary support beams P2A to P2X and the primary beams P1A to P1D. These plywood plates cover the right triangle TR1 and the trapezium TR2 by resting only on the secondary support beams P2A to P2X and the primary beams P1A to P1D. The absence of a secondary support beam in the right triangle TR1 and in the trapezium TR2 constitutes a danger for a user wandering on the plywood plates, which can accidentally pass through the WHO modular support frame (through the right triangle TR1 or through the trapezium TR2). The lack of support also affects the strength of the formwork to support the slab before concrete setting. A problem proposed by the present invention is to allow a simple and fast adaptation of a modular support structure, to support a slab formwork or the like, to the walls of a building forming between them angles different from each other. ° to better secure operators and effectively support the slab. To achieve these and other objects, the invention provides a secondary support beam, to be disposed between two primary beams to form a modular support frame for supporting a slab formwork or the like, the secondary support beam. extending in a first longitudinal direction between a first end and a second end, and comprising: - an upper bearing surface defining a carrying plane, intended to carry the slab formwork or the like, - means for adjusting the length secondary support beam, - a first connecting structure, arranged at the first end and adapted to be fixed to a respective primary beam or to a strut, - a second connecting structure, disposed at the second end and adapted to be fixed to a respective primary beam or a forestay; According to the invention, the first and second connection structures are respectively hinged to the first end and the second end via a respective pivot connection permitting pivoting of each of the first and second connection structures around each other. a first and a second pivot direction respectively perpendicular to the carrying plane. The pivoting articulation of the first and second connection structures, combined with the adjustable length of the secondary supporting beam, makes it possible to arrange the secondary support beam according to the invention between two primary beams with an angle different from 90 ° between the primary beams and the secondary support beam. The secondary support beam can thus be arranged between the primary beams at an angle, in particular enabling it to pass along a wall that forms an angle different from 90 ° with respect to the primary beams. The secondary support beam according to the invention can thus be arranged in the right triangle TR1 or in the trapezium TR2 to support a plywood plate. Advantageously, the length adjustment means may comprise a first section and a second section extending respectively along second and third longitudinal directions and arranged to slide relative to one another in the first longitudinal direction by means slideway to be movable between a retracted position, in which the overlap of one section by the other is the largest, and at least one extension position, in which the overlap of one section by the other is less than in a fallback position. The length adjustment means thus have a very simple, robust constitution, and can be easily and quickly implemented to adjust the length of the secondary support beam. Preferably, it can be provided that: the secondary supporting beam comprises a maximum transverse section defined by a height according to the first or second pivoting direction, and defined by a width in a transverse direction perpendicular to the pivoting directions, 3034120 - the first connecting structure extends in width, in a transverse direction perpendicular to the first longitudinal direction and in the first pivoting direction, at a distance greater than the maximum width of the secondary support beam.

The width of the first connecting structure, greater than the maximum width of the secondary support beam, makes it possible to effectively limit the risks of rotation of the secondary support beam around the first longitudinal direction when an operator is walking on the Support modular framework works on the upper bearing surface of the secondary support beam. Preferably, the second connecting structure may extend in width, in a transverse direction perpendicular to the first longitudinal direction and the second pivoting direction, at a distance less than the maximum width of the first connecting structure.

The second connecting structure can thus be arranged in the immediate vicinity of the wall panel to run and forming an angle different from 90 ° with the primary beams between which the secondary support beam is arranged. The second connecting structure may also be arranged in the immediate vicinity of the second connecting structure of an adjacent secondary support beam, the two adjacent beams being arranged in a converging beam towards their second end with the first longitudinal directions of the two adjacent beams not parallel to each other. Advantageously, the first connection structure may extend in width equally on either side and away from the first direction of pivoting. The risk of rotation of the secondary support beam around the first longitudinal direction is thus identically limited in both directions of rotation about the first longitudinal direction. Preferably, when the transverse direction along which the first connecting structure extends is perpendicular to the first longitudinal direction, the first connecting structure may extend in width away from the first pivoting direction and beyond the maximum width of the secondary support beam, in at least one direction, at a maximum distance of about 10 cm. Thus, when two secondary support beams are disposed adjacent their first connecting structure in abutment with each other and the first longitudinal directions of the two secondary supporting beams converge towards their second structure of 3034120 6547FDEP.docx 5 or parallel, the gap between the adjacent adjacent support beams will be maximum in the vicinity of their first connection structures and be a maximum of about 20 cm. Such a gap limits the risks that an operator may fall into the space between the two adjacent adjacent secondary support beams so arranged. Advantageously, provision can be made for: the supporting secondary beam having a maximum transverse section defined by a height according to the first or second pivoting direction, and defined by a width in a transverse direction perpendicular to the pivoting directions; second connecting structure extends in width, in a transverse direction perpendicular to the first longitudinal direction and the second pivoting direction, at a distance less than or equal to the maximum width of the secondary support beam.

The second connecting structure can thus be arranged even more in the immediate vicinity of the wall panel along and forming an angle different from 90 ° with the primary beams between which the secondary support beam is arranged. The second connection structure can also be arranged even more in close proximity to the second connecting structure of an adjacent secondary support beam, the two adjacent beams being arranged in a converging beam towards their second ends with the first longitudinal directions. not parallel to each other. Preferably, the first and second connection structures are respectively pivotable about the first and second pivotal directions at an angular magnitude of about 80 degrees. Such pivoting amplitude allows the secondary support beam to adapt to the majority of angles that can form a wall section with the two primary beams between which is disposed the secondary support beam. Advantageously, each connection structure may comprise a lower hooking structure shaped to come into vertical support simply by moving downward on a lateral structure for receiving a primary beam or a stay in a vertical support zone. and to cling to the receiving side structure so as to oppose any axial displacement to and away from the primary beam or strut.

Such connecting structures allow easy and rapid placement of the secondary support beam on the lateral structure of receiving a primary beam or strut by a simple movement. After this installation, the inhibition of any axial displacement to and away from the primary beam or the forestay contributes to maintain the secondary support beam in a good place, which increases the safety of the operators.

According to another aspect of the invention, there is provided a modular support frame for slab formwork or the like, comprising: at least one primary support beam provided on its sides with side structures for receiving a connection structure of a secondary support beam as described above, and / or at least one stay provided with a lateral structure for receiving a connection structure of a secondary support beam as described above, - at least one Secondary support beam as previously described. Other objects, features and advantages of the present invention will become apparent from the following description of particular embodiments, with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a modular frame of FIG. support according to the state of the prior art for slab formwork or the like between sections of walls; FIG. 2 is a perspective and top view of an embodiment of secondary support beam according to the invention; FIG. 3 is a perspective and detail view of a first connecting structure of the secondary supporting beam of FIG. 2; FIG. 4 is a perspective and detail view of a second connecting structure of the secondary supporting beam of FIG. 2; Figure 5 is a perspective and bottom view of the secondary support beam of Figure 2; - Figure 6 is a top view of the secondary support beam of Figure 2; Figure 7 is a detail and perspective view illustrating the connection of a first connecting structure of the secondary support beam of Figure 2 to a primary beam and / or a strut; - Figure 8 is a perspective view of the modular frame of Figure 1 adapted by the presence of secondary support beams of Figure 2; and FIG. 9 is an enlarged partial view of FIG.

FIGS. 2 to 7 show a particular embodiment of secondary support beam 1 according to the invention. This secondary support beam is intended to be arranged between two primary beams P1A, P1B or 3034120 65471, DERdacx 7 P1C (Figure 1) to form a modular support frame to support a slab formwork or the like. The secondary support beam 1 extends in a first longitudinal direction II between a first end 2 and a second end 3. The secondary support beam 1 comprises an upper bearing surface 4 defining a carrying plane PP intended to carry slab formwork or the like. Adjustment means 5 make it possible to adjust the length L of the secondary supporting beam 1, thus varying the distance separating the first and second ends 2 and 3. In the present case, the adjusting means 5 comprise a first section 6. and a second section 7 extending respectively along second and third longitudinal directions II-II and III-III. The first and second sections 6 and 7 are arranged to slide relative to one another in the first longitudinal direction II (which coincides with the second and third longitudinal directions II-II and III-III) by means 15 of slide 8 to be movable between a folded position (FIG. 6), in which the cover R of the first section 6 by the second section 7 is the largest, and at least one extension position (FIG. 2), in which the recovery R of the first section 6 by the second section 7 is less than in the folded position.

The upper surfaces 6b and 7b of the first and second sections 6 and 7 (defining the upper carrying surface 4) are included in the same and single carrying plane PP so that the slab formwork or the like is carried by the first and second sections 6 and 7 at one and the same height from the ground.

A first connecting structure 9 is disposed at the first end 2 and is adapted to be attached to a respective primary beam or strut. The first end 2 of the secondary support beam 1 is formed by a first end 6a of the first section 6. A second connection structure 10 is disposed at the second end 3 and is adapted to be fixed to a respective primary beam or at a forestay. The second end 3 of the secondary supporting beam 1 is constituted by an end 7a of the second section 7. As seen more particularly in FIG. 3, the first connecting structure 9 is articulated on the first end 2 by 35 intermediate a pivot link 11 allowing pivoting of the first connecting structure 9 around a first pivoting direction IV-IV perpendicular to the carrying plane PP. And it is more particularly seen in Figure 3034120 6547FDERdocx 8 4 that the second connecting structure 10 is articulated on the second end 3 via a pivot connection 12 allowing pivoting of the second connection structure 10 around a second pivot direction VV perpendicular to the carrying plane PP.

The upper surfaces 9b and 10b of the first and second connection structures 9 and 10 are located vertically, in the pivot directions IV-IV or V-V, at heights less than or equal to that of the carrying plane PP. Here, the upper surfaces 9b and 10b are included in the carrying plane PP to help support the slab formwork or the like at a single lo and same height relative to the ground. FIGS. 2 and 3 show more particularly that the secondary supporting beam 1 has a maximum transverse section defined by a height H according to the first IV-IV or the second VV pivoting direction, and is defined by a width L1 according to a transverse direction VI-VI perpendicular to the pivoting directions IV-IV and VV. In FIG. 6, it can be seen that the first connecting structure 9 extends in width, in the transverse direction VI-VI perpendicular to the first longitudinal direction II and in the first pivoting direction IV-IV, at a greater distance L2 to the maximum width L1 of the supporting secondary beam 1. More precisely, the first connecting structure 9 extends in width equally on both sides and away from the first pivoting direction. IV-IV. When the first connecting structure 9 extends in width in the transverse direction VI-VI perpendicular to the first longitudinal direction II and the first pivot direction IV-IV, it extends in width away from the first pivot direction IV-IV, and beyond the maximum width L1 of the secondary support beam 1, in both directions, at a maximum distance D2 of about 10 cm. In the embodiment illustrated in FIGS. 2 to 7, the secondary supporting beam 1 has a width L1 of 10 cm and the first connecting structure 9 has a width L2 of 30 cm (15 cm on either side of the plane defined by the first longitudinal direction II and the first and second pivoting directions IV-IV and VV). In this same FIG. 6, it can be seen that the second connecting structure 10 extends in width along a transverse direction VII-VII perpendicular to the first longitudinal direction II and the second pivot direction VV at a distance L3 less than the width L2 of the first connecting structure 9, and even less than or equal to the maximum width L1 of the secondary supporting beam 1. In this case, the second connecting structure 10 has a width L3 of 5 cm (the second connecting structure 10 extends in width according to the distance D1 of 2.5 cm on either side of the plane defined by the first longitudinal direction II and the first and second 5 pivot directions IV-IV and VV). The first and second connection structures 9 and 10 respectively pivot about the first and second pivot directions IV-IV and VV at angular amplitudes A5 and A6 of about 80 ° (about 40 ° on either side of the defined plane). by the first longitudinal direction II and the first and second pivoting directions IV-IV and VV). FIGS. 3 and 4 show more particularly that the first and second connection structures 9 and 10 each comprise a lower hooking structure 13 shaped to come into vertical support by simply moving downward on a lateral receiving structure 14 of FIG. a primary beam P1 A, P1B, 131C or P1D or a lateral structure 15 for receiving a strut E1, E2, E3, E4, E5, E6, E7 or E8 in a vertical bearing zone, and for attaching to the lateral receiving structure 14 or 15 so as to oppose any axial displacement towards and away from the primary beam P1A, P1B, P1C or P1D or the strut E1, E2, E3, E4, E5, E6, E7 or E8 (Figure 7). It should be noted that, although having different shapes, the lateral receiving structures 14 and 15 make it possible to receive in abutment the lower hooking structure 13 of the first and second connection structures 9 and 10 in the same way. that is to say with the carrying plane PP of the secondary supporting beam 1 substantially coplanar with the carrying plane PP1 of the primary beam P1A, P1B, P1C or P1C and of the strut E1, E2, E3, E4 , E5, E6, E7 or E8. Thus, the first and second connection structures 9 and 10 can come in vertical abutment on the lateral receiving structure 14 and / or on the lateral receiving structure 15. When using the secondary support beam 1, this First, it presents itself with its first and second sections 6 and 7 in a retracted position (FIG. 6), in which position it is stored in a compact manner. The lower hooking structure 13 of the first or the second connecting structure 9 or 10 is then brought into vertical support on a lateral receiving structure 14 of primary beam P1A-P1D and / or on a lateral receiving structure 15. was El-E8. The lower hooking structure 13 of the other of the first or second connecting structure 9 or 10 is then brought into vertical abutment on another lateral structure 14 for receiving primary beam P1A-P1D and / or lateral structure of receiving E1-E8 strut.

To do this, the length L of the secondary supporting beam 1 can be adjusted by sliding the first and second sections 6 and 7 to an extended position. When placing the first and second connection structures 9 and 10, it may be necessary to orient the first longitudinal direction II of the secondary support beam 1 at an angle different from 90 ° with the elongation directions. primary beams P1A-P1D on which the secondary support beam 1 rests. To do this, the first and second connection structures 9 and 10 are pivoted, thanks to the pivot links 11 and 12, around the pivoting directions IV-IV and VV. In FIGS. 8 and 9 is illustrated the WHO support modular frame of FIG. 1 comprising four primary support beams PLA to PLD provided on their side, as in FIG. 7, with lateral receiving structures 14 of a first or a second connecting structure 9 or 10. The primary support beams P1 A to P1D are supported by props E1 to E8 also provided, as in FIG. 7, with lateral receiving structures 15 of a first or second Connection structure 9 or 10. It will be seen more particularly in FIGS. 8 and 9 that the right triangle TR1 has been filled by a secondary support beam 1A similar to the support beam 1 of FIGS. 2 to 7. The secondary beam of FIG. Support 1A rests according to its second connecting structure 10 on the forestay E2 and rests according to its first connecting structure 9 on the primary beam P1B and on the strut E4. The trapezium TR2 has also been filled by a group of secondary support beams 1B, 1C, 1D and 1E similar to the secondary support beam 1 illustrated in FIGS. 2 to 7. The secondary support beams 1B to 1E are arranged in a bundle and converge at their second end 3. The secondary supporting beams 1B and 1C are based on their second connecting structure 10 on the primary support beam P1B, while the secondary support beams 1D and 1E rest according to their second connection structure 10 on the forestay E4. The secondary support beams 1B, 1C and 1D rest in abutment according to their first connecting structure 9 on the primary support beam P1C while the secondary supporting beam lE rests according to its first connection structure 9 simultaneously on the primary beam 35 P1C support and on the forestay E6. More particularly, in FIG. 9, the first connection structures 10 of the secondary supporting beams 1B to 1E are in contact one after the other. Due to the width L2 of the first connection structures 9 with respect to the width L1 of the supporting secondary beams 1B to 1E, the distance between the adjacent secondary beams 1B and 1C, or 1C and 1D, or 1D and 1E (taken perpendicular to the first longitudinal direction II of one or the other of the adjacent beams 1B or 1C, 1C or 1D, 1D or 1E) will be maximum in the vicinity of the first connection structures 9 and will be at most about 20 cm . The spacers E1, E2 and E3 between the secondary support beams 1B, 1C, 1D and 1E are thus dimensioned so as to effectively limit the risks that an operator passes through the OMS modular support frame. The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof within the scope of the claims below.

Claims (10)

REVENDICATIONS1. Secondary supporting beam (1, 1A-1E), to be arranged between two primary beams (P1A-P1D) to form a modular support framework (OMS) for supporting a slab formwork or the like, the secondary support beam ( 1, 1A-1E) extending in a first longitudinal direction (II) between a first end (2) and a second end (3), and comprising: - an upper bearing surface (4) defining a carrying plane ( PP), intended to carry the slab formwork or the like, - adjustment means (5) in length (L) of the secondary support beam (1), - a first connection structure (9), arranged at the first end (2) and adapted to be fixed to a respective primary beam (P1A-P1D) or a strut (E1-E8), - a second connecting structure (10), arranged at the second end (3) and adapted to be attached to a respective primary beam (P1A-P1D) or a forestay (E1 -E8), characterized in that the first (9) and second (10) connecting structures are respectively articulated on the first end (2) and on the second end (3) via a pivot connection (11). , 12) respectively allowing pivoting of each of the first (9) and second (10) connection structures around a first (IV-IV) and a second (VV) respective pivoting direction perpendicular to the carrying plane ( PP). 2 - secondary support beam (1, 1A-1E) according to claim 1, characterized in that the adjustment means (5) in length comprise a first section (6) and a second section (7) respectively extending according to second (II-II) and third (III-III) longitudinal directions and arranged to slide relative to each other in the first longitudinal direction (II) by slide means (8) to be movable between a fold position, in which the overlap (R) of one section (6, 7) by the other is the largest, and at least one extension position, in which the overlap (R) of a section ( 6, 7) by the other is less than in the retracted position. 3 - secondary support beam (1, 1A-1E) according to one of claims 1 or 2, characterized in that: - the secondary support beam (1, 1A-1E) has a maximum cross section defined by a height (H) according to the first (IV-IV) or second 3034120 6547REVMOD I.ducx 13 direction (VV) of pivoting, and defined by a width (L1) in a transverse direction (VI-VI) perpendicular to the pivot directions ( IV-IV, VV), the first connecting structure (9) extends in width in a transverse direction (VI-VI) perpendicular to the first longitudinal direction (II) and the first pivoting direction (IV -IV), according to a distance (L2) greater than the maximum width (Li) of the secondary supporting beam (1, 1A-1E). 4 - secondary support beam (1, 1A-1E) according to claim 3, characterized in that the second connecting structure (10) extends in width, in a transverse direction (VII-VII) perpendicular to the first 10 longitudinal direction (II) and the second pivoting direction (VV), at a distance (L3) smaller than the maximum width (L2) of the first connecting structure (10). 5 - secondary support beam (1, 1A-1E) according to any one of claims 1 to 4, characterized in that the first connecting structure (9) extends in width equally between the parts and the other and away from the first pivoting direction (IV-IV). 6 - secondary supporting beam (1, 1A-1E) according to any one of claims 1 to 5, characterized in that, when the first connecting structure (9) extends in width in the transverse direction (VI- VI) 20 perpendicular to the first longitudinal direction (II) and the first pivoting direction (IV-IV), the first connecting structure extends in width away from the first pivoting direction (IV-IV) and beyond the maximum width (L1) of the secondary support beam (1), in at least one direction, with a maximum distance (D2) of about 10 cm. 25 7 - secondary support beam (1, 1A-1E) according to any one of claims 1 to 6, characterized in that: - the secondary supporting beam (1, 1A-1E) has a maximum cross section defined by a height (H) according to the first (IV-IV) or second pivot direction (VV), and defined by a width (L1) in a transverse direction (VI-VI) perpendicular to the pivot directions (IV-IV, VV), - the second connecting structure (10) extends in width, in a transverse direction (VII-VII) perpendicular to the first longitudinal direction (II) and the second pivot direction (VV), according to a distance (L3) less than or equal to the maximum width (L1) of the secondary support beam 35 (1). 8 - secondary support beam (1, 1A-1E) according to any one of claims 1 to 7, characterized in that the first (9) and second (10) connection structures respectively pivot about the first (9) and IV-IV) and second (VV) pivoting directions at an angular amplitude (A1, A2) of about 80 degrees. 9 - secondary support beam (1, 1A-1E) according to any one of claims 1 to 8, characterized in that the first (9) and second (10) connection structures each comprise a lower hooking structure ( 13) shaped to come into vertical support by simply moving downward on a lateral receiving structure (14, 15) of a primary beam (P1A-P1D) or a strut (E1-E8) according to a zone of vertical support, and for hooking onto the lateral receiving structure (14, 15) so as to oppose any axial displacement towards and away from the primary beam (P1A-P1D) or the prop (El-E8). 10 - Modular support frame (OMS) for slab formwork or the like, comprising: - at least one primary support beam (P1A-P1D) provided on its sides with side receiving structures (14) of a connecting structure (9, 10) a secondary support beam (1, 1A-1E) according to any one of claims 1 to 9, and / or at least one strut (E1-E8) provided with a lateral receiving structure (15) a connection structure (9, 10) of a secondary supporting beam (1, 1A-1E) according to any one of claims 1 to 9, - at least one secondary supporting beam (1 , 1A-1E) according to any one of claims 1 to 9.