ES2568041T3 - Cell plate provided with at least one lifting ring - Google Patents

Abstract

Method of carrying out a cell plate comprising an upper plate (2), a lower plate (3) and intermediate walls (4) between the two plates, defining between them parallel and longitudinal cells (5), said cell plate comprising at least one lifting ring (9), constituted of a metallic thread, configured in the form of a staple, the arms of the staple (9) folded in such a way that its free end (16, 17) extends under a thread (6) for reinforcing the plate disposed at the base (4a) of said intermediate wall, the staple of a concrete mass (10) emerging below an opening (7) made in the upper plate (2), vertically above of an intermediate wall (4) such that the clip has a shape that allows the end of its arms to be slid under a reinforcing wire of the plate, and characterized by the fact that this procedure comprises, once the cell plate has left the machine a of its manufacture, the steps of: - proceed to the realization of a hole (7) in the upper plate (2), above an intermediate wall (4) through the collapse of the still fresh concrete of this plate (2) and leveling the tip of the wall (4); - inserting the clip (9) over the concrete block resulting from the completion of the hole (7) in such a way that the coplanar free ends (16, 17) of its arms (13, 14) are located at a lower height to that of the reinforcing thread (6) mentioned above; - rotate the clip (9) of approximately one revolution in quarter (9) to slide said free ends (16, 17) under the reinforcing thread and vibrate the concrete rocker (8) to produce a mass (10) in which the ends of the staple arms are embedded.

Description

DESCRIPTION

Cell plate provided with at least one lifting ring

The present invention refers to a cell plate previously equipped with a means to facilitate its manipulation.

BACKGROUND OF THE INVENTION

A cellular plate comprises an upper plate, a lower plate, and intermediate walls between the two, which define longitudinal cells between them. These cells are intended to be juxtaposed and joined together to constitute soils. At its longitudinal ends a prestressing reinforcement ends to ensure its connection with the walls of a building.

One of the problems with which one finds himself in case of using cell plates resides in his difficulty of manipulation.

One of the methods used to displace these plates consists in the use of automatic closing clamps that are positioned in the reliefs of the longitudinal edges of the cellular plates that constitute, once they have been positioned, the keys of the union of juxtaposed plates . However, there have been 20 numerous accidents caused by the misuse of these clamps or the breakage of compressed concrete at the height of their jaws. A safety chain must bend these tweezers to retain the cell plate in case of failure. Unfortunately, this chain is not installed frequently.

A different method of manipulation is to pass a belt under the cell plate at each of its ends. This method, safer than the previous one, is only really effective if an anti-slip system is available between the cell plate and each of the straps, so that the plate is not allowed to escape from its support. One of the major drawbacks of this method lies in the fact that it is not possible to juxtapose two cell plates with the edges next to each other, taking into account the presence of the straps that are interposed between the plates. A remedy for this failure has been proposed by the realization of notches at the edges of the cell plates intended to receive the straps so that they can be removed once the cell plates have been placed with the edges next to each other. . However, on site, we must proceed to recap these notches.

Likewise, another method of handling these cell plates will be mentioned, which consists in the realization in the factory of some holes that cross the plate and in the positioning of a sling in these holes so that the eyelet of the same protrudes below the plate cell phone and be locked by a bar or disk. Such a procedure is long and annoying, and therefore expensive. Like the previous method, it requires that the holes be covered again on site, which is a delicate operation and that damages the aesthetics of the floor made.

 40

Mention will also be made of document FR 2 822 868 which proposes incorporating at the time of manufacturing the cell plate a transverse cable below the prestressing reinforcement, at least each of its ends, so that said cable exits laterally from the cell plate The outer end of these cables is provided with an eyelet that constitutes the means of clamping the plate and at the time of installation by juxtaposition on site, the external part of the cables as well as the eyelet can be folded inwards in the space that forms the junction of two adjacent plates. The main drawback of this arrangement resides in the difficulty of integrating said transverse element at the time of manufacturing a cell plate. Indeed, a cellular plate is manufactured according to an extrusion process, that is, with a privileged direction, and any element that constitutes said plate in a different direction generates a manufacturing complication. On the other hand, the need to precisely accommodate the ends of the support cable in the joints between the plates requires that the workers on site work with precision and, above all, do not forget this operation. However, it is known that working conditions on site are not favorable to precise and delicate tasks.

Finally, EP 1 555 100 will be mentioned which describes a process according to the preamble of claim 1. 55

OBJECT OF THE INVENTION

By the present invention, it is understood to propose a more satisfactory solution than that known for the manipulation of cell plates that does not require any particular operation to be performed on site and that does not cause 60 major complications at the time of manufacturing the license plate.

SUMMARY OF THE INVENTION

For this purpose, then, the invention has as its first object a method of realizing a cell plate according to claim 1. The lifting ring thus constituted acts on the reinforcement of the plate and not on the concrete, which It is a security bond of your anchor. 5

The concrete mass in which the ends of the staple arms are submerged is made by the collapse of the top plate in the place of the opening and a part of the wall located vertically with respect to it. The anchoring of the lifting ring is then carried out without the addition of new concrete, which simplifies the operation. 10

The clip that forms the lifting ring can take several forms to the extent that the end of its arms can slide under a reinforcing wire of the cell plate. In one embodiment, the clip comprises a tip from which the two arms whose free ends are coplanar in an arc of a circle and symmetrical to each other, with respect to a center that is the projection of the tip on its plane . fifteen

The total height of the clip will be such that its tip will be located below the upper surface of the cell plate when the ends of the arm will have been slid below the longitudinal reinforcement thread of the plate.

The method of realizing said cellular plate consisting, once the plate has left its manufacturing machine 20, in proceeding to the realization of a hole in the upper plate, on both sides of an intermediate wall by collapsing the concrete still fresh and leveling the tip of the wall, to introduce the staple of both sides on the concrete mass that results from the realization of the hole so that the coplanar free ends of its arms are located at a height lower than that of said reinforcing thread, in rotating the clip of approximately one revolution in fourth to slide said free ends under the reinforcing wire and vibrating the concrete mass by submerging the ends of the arms of the clip.

The implementation of this procedure is simple since, with the exception of the clip, no additional material is required to proceed to seal said clip on the cell plate. Therefore, there is a high homogeneity in the material of the cell plate, even as regards the lifting ring. 30

The object of the invention is finally a tool to implement the above-mentioned method comprising a thread trimming tool that has a closed contour identical to the contour of the housing to be made, a handle for handling the clip capable of handling it. from the tip of the latter, and a compressor with skates. Said tools must be installed at the end of a vibrating head 35 (portable needle in the case of a hand tool or a robotic machine carriage programmed in the industrial production phase) interchangeably to perform the above-mentioned manufacturing procedure.

Other features and advantages of the invention will result from the description given below of some examples of its embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS

Reference will be made to the accompanying drawings, among which: 45

- Figure 1 is a partial cross-sectional view of a cell plate,

- Figure 2 illustrates this same cell plate provided with a housing hole of a lifting ring,

- Figure 3 illustrates the preceding cell plate, equipped with the lifting ring according to the invention,

- Figure 4 illustrates a lifting ring protection device,

- Figure 5 is a perspective view of a first embodiment of the lifting ring according to the invention,

- Figures 6A, 6B and 6C are respectively front, side and top views of a second embodiment of said lifting ring,

- Figure 7 illustrates a first tool intended to prepare the cell plate for the installation of the lifting ring, 55

- Figures 8A and 8B are two orthogonal views of a second installation tool of said ring,

- Figure 9 finally illustrates a compression tool of the sealing area of the lifting ring.

DETAILED DESCRIPTION OF THE INVENTION

 60

In the figures, a cellular plate 1 is represented as comprising an upper plate 2, a lower plate 3, longitudinal walls 4 extending between these two plates to define between them longitudinal plates 5. Said cellular plate comprises a prestressing reinforcement of which the longitudinal threads 6 are represented in a base part 4a of each wall 4.

 65

In Figure 2, the cellular plate shown in section has a hole 7 that has been made by means of a deformation of the upper plate 2, where the deformed concrete constitutes a rocker 8 around the base part 4a of the wall 4 a lead from which the hole has been made.

Figure 3 illustrates the arrangement of a lifting ring 9 whose open geometry illustrated below 5 allows the ends of this ring to slide under a prestressing reinforcing wire 6 and whose lower part of the arms is submerged in a mass 10 of concrete which is made by means of the compression of the collapse 8. The tip S of the lifting ring 9 is at a height which, in addition, is level with the height of the upper surface of the cell plate.

 10

In figure 4, a plastic structure 11 is shown that has elastic legs 11a that can be coupled under the edges of the hole 7 and a bottom 11b crossed by the tip S of the ring 9, where this structure 11 has a cover 12 capable of being folded and locked on it when installed in hole 7.

 fifteen

In Figure 5, the lifting ring is represented alone. It is noted that it takes the form of a clip 13 that has a tip S and two arms that exit from this tip, 14 and 15, in this case divergent, each of the arms being terminated by a circular end 16, 17, said coplanar ends being, therefore belonging to the same plane P. The center of the radius of curvature of each of these ends 16, 17 is a point C of the plane P which is the projection of the point S of the clip . A thread of 20 prestressing reinforcement 20 has been shown in mixed line to illustrate the position in space of this clip 13 when it constitutes the lifting ring of a cell plate. It is noted that said reinforcement 6 is located above the coplanar ends 16 and 17, and crosses them approximately in its center.

In Figures 6A, 6B and 6C a variant embodiment of the clip of Figure 5 is shown. In said variant, the arms 14 and 15 are each divided into three parts, a first part 14a, 15a forming with the tip S of the staple a U, a second part 14b, 15b extending the first part of each arm, diverging from the plane containing them, a lower third part 14c, 15c, each parallel to the plane containing the first parts 14a , 15a, the free ends 16, 17 being arranged in a circular arc at the end of the parts 14c and 15c. These ends 16 and 17 cross the plane containing the first parts 14a and 15a of the arms 14 and 15 of 30 the clip. It is understood from Figures 6A and 6B that, in projection in a plane that passes through the center of the ends 16 and 17 and through the tip of the clip, the latter takes the form of a closed loop (Figure 6B) while that, in projection in a plane perpendicular to the plane of Figure 6B, the clip has an open U-shape (Figure 6A).

 35

The tool shown in Figure 7 is a hand tool used to make the hole 7. It comprises a vibrating needle 20, known per se, and a thread 22 defining a closed contour identical to the contour of the hole 7, located in a perpendicular plan with respect to to the axis of the vibrating needle 20 and coupled thereto through flanges 21.

 40

When the cell plate leaves the extrusion machine, the operator applies on the plate 2 the tool of figure 7 whose vibrations allow a cut of the hole 7. The concrete inside the closed thread 22 collapses on each side of the base 4a of wall 4 whose tip is equally leveled. The result is represented in figure 2.

 Four. Five

The operator equips the vibrating needle 20 of a second tool represented in figures 8A and 8B consisting of a clamp 23 provided with a handle 24 which allows to take care of the upper part 14a, 13a of the clip represented in figures 6A, 6B and 6C. Said clip is inserted vertically inside the hole 7, and while the vibrating needle is in service, it is sunk into the rockery 8 to a level slightly below the height of the prestressing threads 6. The sinking of the clip 13 it is oriented, that is to say that the position thereof represented in FIG. 8B is realized in 50, so that, at the end of this sinking, the prestressing thread 6 is located between the arms 14 and 15 of the clip.

At this level, the operator proceeds to a rotation of a quarter revolution of the clip, so that the ends 16 and 17 of the latter come to slide under the reinforcing wire 6 and cross it. 55

Finally, by means of a last tool 25 coupled with the vibrating needle 20, the rocker 8 is compacted in which the lower part of the clip 9 is submerged, a compaction leading to a homogeneous concrete mass 10 and consistent with the rest of the concrete of the cell plate, ensuring the strength and safety of the anchoring of the clip in the thickness of the cell plate. 60

All these operations have been carried out during the time when the concrete was still fresh at the exit of the machine of the type extruder manufacturing the cell plate on the prestressed threads. Its preparation is completed through the installation of the shutter formed by the reinforcement 11 provided inside the pin 7 and the cover 12 which, in turn, is articulated and is interlocked on said reinforcement. 65

The means of handling in the standby mode on the cell plate have been installed without unduly complicating the classic manufacturing mode of this cell plate and they will not oppose any of the installation operations on site of the cell plates next to each other.

It will be noted that the manufacture of a cell plate according to the invention in an industrialized process will refer to a robotic machine comprising a vibrating head with which the aforementioned equipment (trimming thread, hook grip handle and compressor ) may be interchangeably coupled or comprising several heads mounted on an endless chain conveyor on a carriage movable in a programmed manner on a gantry located above the cell plate at the exit of the manufacturing extruder. 10

Claims (5)

1. Method of making a cell plate comprising an upper plate (2), a lower plate (3) and intermediate walls (4) between the two plates, defining between them parallel and longitudinal cells (5), said said comprising cellular plate at least one lifting ring (9), constituted of a metallic thread, 5 configured in the form of a staple, the arms of the staple (9) folded so that its free end (16, 17) extends below of a reinforcing wire (6) of the plate disposed in the base (4a) of said intermediate wall, the staple of a concrete mass (10) emerging below an opening (7) made in the upper plate (2) , vertically on top of an intermediate wall (4) such that the clip has a shape that allows the end of its arms to be slid under a reinforcing wire of the plate, and characterized by the fact that this procedure comprises, once the cell plate has left the machine of its manufacture, the stages of: - proceed to the realization of a hole (7) in the upper plate (2), above an intermediate wall (4) through the collapse of the still fresh concrete of this plate (2) and the leveling of the tip of the wall (4); fifteen - inserting the clip (9) over the concrete block resulting from the completion of the hole (7) in such a way that the coplanar free ends (16, 17) of its arms (13, 14) are located at a lower height to that of the reinforcing thread (6) mentioned above; - rotate the clip (9) of approximately one revolution in quarter (9) to slide said free ends (16, 17) under the reinforcing thread and vibrate the concrete rocker (8) to produce a mass (10) in which the 20 ends of the staple arms are embedded. 2. A method according to claim 1, characterized in that the clip comprises a tip (S) from which the two arms (14, 1.5) start whose free ends (16, 17) are coplanar in an arc of circle and symmetrical to each other with respect to a center (C) which is the projection of the tip (S) on its plane (P). 25 3. Method according to claim 2, characterized in that, in a projection, in a vertical plane passing through the tip and center of the two arm ends, the clip adopts the U-shape, while , in a projection in a perpendicular vertical plane with respect to the foreground, the clip has the shape of a closed loop. 30 Method according to one of the preceding claims, characterized in that the tip (S) of the clip is located below the upper surface of the plate (2) of the cell plate and is covered by a device. of protection (11, 12).  35 5. Tooling for carrying out the method according to one of the preceding claims, characterized in that it comprises: - a cutting wire (22) having a closed contour identical to the contour of the hole to be made in the upper plate, 40 - a handle (24) for handling the clip, capable of handling said clip from the tip of said clip, - a compressor (25) with skates (26), and - a vibrating head (20) with the end of which the thread, the handle and the compressor can be interchangeably interchangeable. Four. Five