FR2971643A1 - ECLIPS OF ASSEMBLY OF TWO TRUNCONS OF ROAD OF CABLES - Google Patents

Abstract

The present invention relates to a splice for the assembly of two cable tray sections, in particular of substantially rectangular shape, extending generally on the one hand in length along a longitudinal axis (X) between a first and a second edge lateral, and secondly in width along a transverse axis (Y) perpendicular to the longitudinal axis (X) between a first and a second longitudinal edges, the splint comprising at least two assembly hooks and at least two bosses extending parallel to the transverse axis (Y) from the first longitudinal edge to the second longitudinal edge.

Description

FIELD OF THE INVENTION The invention relates to the structures in the form of gutters, generally referred to as cable trays, for supporting and guiding cables, particularly cables. electric, telephone, optical fiber or computer network cables or pipes. These cable trays are generally made by assembling different sections having a variable length and width depending in particular on the number of cables to be arranged inside the gutter they form and the length of the path to go. These cable trays are attached to supporting surfaces, such as walls, columns or posts. The cable trays concerned by the invention are made of wire mesh welded steel, also called more simply wire mesh welded.

More specifically, the invention relates to the assembly of the sections of such cable trays using splints. The weight of the cables arranged in the cable trays may cause over time bending of the cable trays to which the ribs must resist to ensure an assembly of the sections always effective. The assembly of the splints must also be easy and fast and the manufacture of the splints must be simple. 2. Solutions of the Prior Art A known splice requires the addition of screws and nuts to assemble the splice on the cable tray sections. This requires having several parts for the installation and implementation of the splint, namely the splice itself and the screws and nuts to fix it. In addition, the assembly of the splint is relatively tedious. Furthermore, there is known a splint comprising parts to hang on the horizontal son of cable tray sections so as to ensure an efficient assembly, even in case of bending of the cable tray. A disadvantage of such a splint is that it prevents the introduction of a cable tray cover or in any case hinders the installation of it. Another disadvantage is the complexity of the manufacturing process of this splice. OBJECTIVES OF THE INVENTION The object of the invention is therefore especially to overcome all or part of these disadvantages of the prior art. More specifically, the invention aims to provide a splice for the assembly of two sections of wire mesh truss welded, which does not require additional part for mounting the splice. The invention also aims to provide a splint whose assembly is done quickly and easily, without risk of injury. The invention also aims to provide a splice for the assembly of cable tray sections that is simple to manufacture, while being efficient even in case of bending of the cable tray. The invention also aims to provide a splint that is compatible with the installation of a cover on the cable tray. 4. DISCLOSURE OF THE INVENTION The invention manages to solve all or part of these objectives by means of a splice for the assembly of two cable tray sections, in particular of substantially rectangular shape, generally extending on the one hand to length along a longitudinal axis between a first and second side edges and secondly in width along a transverse axis perpendicular to the longitudinal axis between a first and a second longitudinal edges, the splice comprising at least two assembly hooks , also called lugs, in particular at least three assembly hooks, and at least two lugs extending parallel to the transverse axis from the first longitudinal edge to the second longitudinal edge. Thanks to the invention, there is a relatively simple splint to manufacture and assemble, without the need to add other parts such as screws or others. In addition, the splice according to the invention is technically efficient, thanks to the presence of the bosses, which can effectively and durably assemble sections of cable tray, even in the presence of a bending of the sections together, related to a heavy weight of cables. The splint is preferably metal, being for example made of steel. The longitudinal axis may be, in a particular embodiment, slightly curved, in the manner of an arc, while being in particular in a plane perpendicular to the transverse axis. In this case, the splint is slightly curved along this curved longitudinal axis. In another embodiment, the longitudinal axis is rectilinear and splays it as well. The splint may have a width of between 15 and 30 mm, for example equal to about 19 mm. The splint may have a length of between 250 and 300 mm, for example equal to about 269 mm. In one embodiment, the splice comprises exactly three assembly hooks and two bosses. A first assembly hook can for example be used to secure the splice to a first section, a second hook can be used to secure the splice at the same time to the first section and a second section and a third hook can be used to secure the l splits in the second section.

Each boss can be surrounded by two assembly hooks. The splice may for example comprise, between the first and second lateral edges, successively, an assembly hook, a boss, an assembly hook, a boss and a hook assembly. The first and second longitudinal edges are preferably straight, extending substantially in the plane formed by the longitudinal and transverse axes, except at the bosses. By straight edges is meant non-folded edges. The splint is also not folded at the bosses which also have straight edges at their ends located on the first and second longitudinal edges.

The role of the bosses is not an assembly role like hooks. The bosses allow to localize the splint locally, so as to enable it to be effective on its thickness in its axis and also on the thickness of the bosses. The first and second side edges may extend in the plane formed by the longitudinal and transverse axes. The assembly hooks may extend to the same side of the splice as the bosses. In other words, the assembly hooks and the bosses for example project from the same side of the splint. The thickness of the splint can be homogeneous over its entire surface. The thickness of the splice may be greater than or equal to about 2 mm, for example between 2 mm and 3 mm. Such a thickness makes it possible to confer on the splice a certain robustness, and also makes it possible not to present edges or cutting edges, so as not to hurt the operator installing the splice. Such a thickness of splice can also help to avoid bending edges to prevent an operator is injured during installation.

The bosses may be substantially identical to each other and form over the entire width of the splice a substantially rectangular recess, from the first longitudinal edge to the second longitudinal edge. The depth of each boss can be between 2 and 4 mm, in particular between 2.5 and 3 mm.

The assembly hooks may be substantially identical to each other. The assembly hooks may extend parallel to the longitudinal axis or form an angle relative to the longitudinal axis. They may have a depth greater than or equal to the diameter of a cable tray wire and a length of between 15 and 30 mm, for example equal to about 21 mm. Alternatively, in the presence of three hooks, for example, one of them, including that of the middle, may be longer than the others. The splint may, in a particular embodiment, have an opening, for example of oblong or circular shape. Such opening may for example be located on a boss. This opening can be used to fix an accessory such as a connection terminal for grounding cable, for example.

The invention also relates, in combination with the foregoing, to a method of manufacturing a splice as defined above comprising the following steps: making three U-shaped cuts in a metal rectangle extending in length according to a longitudinal axis and widthwise along a transverse axis, the branches of the U extending substantially parallel to the longitudinal axis, stamping or folding the rectangle in two places to form the bosses, lift the cutouts to form the hooks of assembly.

The method of manufacturing a splice according to the invention is relatively simple to implement. The splint is made in one piece, from a metal rectangle may have a thickness in particular greater than about 2 mm, for example between 2 mm and about 3 mm. The object of the invention is also, in combination with the foregoing, a method of mounting a fishplate as defined above, for assembling two sections of wire mesh truss with welded wires arranged side by side, comprising the following steps: inserting the splice between two horizontal wires of each section, the width of the splice being substantially equal to the distance between said two horizontal wires, pushing on the first lateral edge to allow each assembly hook to put engaged between it and the longitudinal part of the splice at least one vertical wire, one of the assembly hooks can engage two vertical son, one of each section, deform each assembly hook to block said or said vertical thread (s) and thus fix the splint while assembling the two sections. The subject of the invention is also, in combination with the foregoing, a set of two sections of wire mesh trusses of welded wires assembled with the aid of two fishplates as defined above, the fishplates each having a suitable width. to be inserted between two horizontal wires of the cable tray sections and a depth of bosses provided to allow the splice to come into contact with said horizontal wires, at the bosses, regardless of any bending of the sections or the path of cables. The presence of the assembly hooks allows the assembly of the welded son of the sections of cable trays, thus allowing the assembly of the sections. The dimensions of the assembly hooks are provided so as to hold firmly the son or son they enclose. The presence of the bosses makes it possible to maintain contact between the splice and the section via the horizontal wires in contact with the bosses, even in the case of bending the sections or the cable tray. 5. List of Figures Other features and advantages of the invention will appear more clearly on reading the following description of embodiments of the invention, given by way of illustrative and non-limiting examples and the accompanying drawing in which: FIG. 1 is a diagrammatic perspective view of a splice according to one embodiment of the invention; - Figure 2 illustrates the splint of Figure 1, seen from above; - Figure 3 shows schematically, the splint of Figure 1, side view; - Figure 4 shows the splint of Figure 1 during manufacture; FIGS. 5 to 8 show the different steps of placing the splice plate of FIG. 1 on cable tray sections; FIG. 9 shows the behavior of the splint of FIG. 1 in the case of bending of FIG. 10 is a diagrammatic perspective view of a splice according to another embodiment of the invention, FIG. 11 is a schematic side view of the splice plate of FIG. 10, and FIG. Figure 12 is a schematic side view of a third embodiment of the splice according to the invention. DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION There is shown in FIG. 1 a splint 1 for the assembly of two sections of wire mesh truss of welded wires. The splint 1 is in accordance with a first embodiment of the invention.

The splint 1 has a generally rectangular shape more visible in Figure 2 extending generally on the one hand in length along a longitudinal axis X between a first lateral edge 2 and a second lateral edge 3 substantially perpendicular to the axis X. The splint generally extends in width along a transverse axis Y perpendicular to the longitudinal axis X between a first longitudinal edge 4 and a second longitudinal edge 5. The splice 1 has an inner side 17, visible in particular in Figure 1 , and an outer side 18. The splint 1 comprises at least two assembly hooks 6, three in number in this embodiment. The splint 1 also comprises at least two bosses 7, exactly two in the illustrated example, extending parallel to the transverse axis Y from the first longitudinal edge 4 to the second longitudinal edge 5. The splice 1 is metallic , being made of steel. From the first lateral edge 2 to the second lateral edge 3, the splint 1 comprises successively, in this example, a first assembly hook 61, a first boss 71, a second assembly hook 62, a second boss 72 and a third hook assembly 63. The first and second longitudinal edges 4 and 5 are straight, being unfolded or folded, and forming edges of the thickness of the splice 1, extending substantially in the plane formed by the longitudinal and transverse axes X and Y, except at the bosses 7, as visible. The role of the bosses 7 is not a role of assembly as the assembly hooks 6. The bosses allow to locally offset the splint, so as to enable it to be effective on its thickness in its axis and also on the thickness of the bosses.

As can be seen in the figures, in particular in FIG. 3, the assembly hooks and the bosses project from one and the same side of the splice, namely the inner side 17. The first and second side edges 2 and 3 are extend in the plane formed by the longitudinal and transverse axes X and Y being also unfolded or folded, straight, forming edges of the thickness of the splice 1, as visible. The dimensions of the splice 1 shown in the figures are as follows. The thickness of the splint 1 is greater than 2 mm and less than 3 mm, which makes it possible to handle the splice for assembly without being injured, this thickness being sufficient to form non-cutting edges formed by the lateral edges. and longitudinal 2, 3, 4 and 5. The length of the splice may be about 26.9 cm and its width about 1.9 cm. The internal width 11 of each boss 7 may be equal to 2.9 cm.

The bosses 7 are in this example identical to each other, they form over the entire width of the splice 1 a substantially rectangular recess from the first longitudinal edge 4 to the second longitudinal edge 5. The depth p of each boss 7 may be equal at approximately 2.85 mm, which is slightly greater than the thickness of the splice 1. In this example, the assembly hooks 6 all have the same length 12 which may be approximately 2.1 cm. As can be seen in FIG. 3, in this embodiment, the assembly hooks 6 extend along a line forming, with the longitudinal axis X, an angle α substantially equal to 5 ° in the example illustrated.

The height hl of the bosses 7 may be equal to 5.35 mm. The width 13 of each hook 6 may be equal to 7 mm. As illustrated, the assembly hooks 6 in this example have a depth greater than or equal to the diameter of a cable tray wire. To manufacture the splice 1, it is possible, as illustrated in FIG. 4, to take a metal rectangle having a length of 272 mm and a width of 19 mm, in the example illustrated. Three cuts are made in the form of an elongated U, the branches of the U being parallel to the longitudinal axis X. Then, one stamps or, alternatively, the rectangle is folded into two zones 21 to form the bosses 7 and the cuts are lifted. 20 so as to form the assembly hooks 6, with for this example shown, an inclination given by the angle a as shown in Figure 3. This angle a may in particular facilitate the assembly of the splice on the sections . Note that bosses and hooks are formed so as to project from the same side 17 of the splint. We will now describe the method of mounting the splice 1 in view of Figures 5 to 8. The splice 1 is intended to assemble two sections of cable tray welded wire mesh visible in Figure 5. It is inserted 1 splits between two parallel horizontal son 26 and 27 of each section 25. Then pushes in the direction of the arrow shown in Figure 6, on the first side edge 2 of the splice 1 to allow each hook of assembly 6 to engage between him and the rest of the splice, in particular the longitudinal portion of the splice, at least one vertical wire 30, 31, 32 or 33 of the sections 25. The second assembly hook 6 or hook center engages the two son 31 and 32 each belonging to a section 25 while the first and third hooks 6, or end hooks or side, engage a single wire, respectively 30 and 33, sections 25. The so-called vertical wires 30, 31, 32 and 33 are welded to horizontal threads 26 and 27 of the sections 25. Each assembly hook 6 is deformed, as illustrated in FIG. 7, with the aid of a notched clip, so as to block the vertical wire (s) 30, 31, 32 and 33, and thus fix the splint 1 while assembling the two sections 25 between them. The blocking of the son 30, 31, 32 and 33 does not allow them to leave the assembly hook 6 which holds them, but can leave some mobility of the son and more generally sections relative to the splint. The assembly illustrated in FIG. 8 is thus obtained. It should be noted that the splice 1 can be placed in the other direction, with the first longitudinal edge 4 in contact with the lower longitudinal wire 27 and the second longitudinal edge 5. in contact with the upper longitudinal wire 26 without departing from the scope of the invention. The assembly of the splice will then be in the opposite direction of the arrow illustrated in FIG. 6. FIG. 9 shows the behavior of a splice 1 according to the invention, in the case of bending of the road sections. of cables. It can be seen in this FIG. 9 that the cable tray has been loaded with cables represented by masses M which cause the cable tray to bend so that the sections 25 are no longer rigorously in line with each other. the other, the vertical son 31 and 32 being no longer parallel to each other but forming a non-zero angle between them. In this case, as can be seen in FIG. 9, the assembly hooks 6 still effectively hold the vertical wires 30, 31, 32 and 33, while the bosses 7 remain in contact with the horizontal longitudinal wires 26 and 27, and even if the second lateral edge 3 in particular is no longer perpendicular to the longitudinal son 26 and 27, as illustrated. Note in Figure 8 that the edges of the first and second longitudinal edges 4 and 5 are in contact with the horizontal longitudinal son 26 and 27. In the example of Figure 9, the first and second longitudinal edges 4 and 5 at the bosses 7 are in contact with the horizontal longitudinal son 26 and 27. It should be noted that the splint 1 is arranged so that the inner side 17 of the splice on which the assembly hooks 6 project and the bosses 7 is turned towards the inside of the raceway. Thus, the bosses 7 are arranged so that, in case of bending the cable tray, the bosses 7 are in contact with the longitudinal son 26 and 27 of the sections 25. It is shown in Figures 10 and 11, a second embodiment of the invention. In this example, the splice 1 differs from that of Figure 1 in that the assembly hook 6 disposed in the middle between the two other assembly hooks has a greater length than the other two hooks.

This is explained by the fact that the two end assembly hooks 6 are intended to enclose a single wire mesh, while the central hook assembly 6 is intended, as explained above, to grip two son of trellis of two different sections. Thus, the middle assembly hook is in this example longer than the others in order to cover two son.

Moreover, in this embodiment also, the assembly hooks 6 are, as can be seen in FIG. 11, substantially parallel to the longitudinal axis X. Finally, in this second embodiment, the splice 1 has an opening 40, of oblong shape in this example. The opening 40 is located in this example on a boss 7. This opening 40 may allow to fix an accessory such as a connection terminal for grounding cable, for example. Of course, the invention is not limited to the examples which have just been described. In particular, as illustrated in Figure 12 and according to another embodiment of the invention, the longitudinal axis X may be slightly curved without departing from the scope of the invention. In this case, the splint 1 will be slightly bent, as visible. In this example, the splint 1 is convex towards the inner side 17 of the splice 1.

In this case, and at the time of assembly, it begins by giving a flat shape to the splint to engage with the sections. When the operator releases it, the splint will resume its original curved shape by elasticity and hold in place without slipping, before folding assembly hooks. The operator can then have a second splint to connect the same sections on the other side of the cable tray. Then, it can, with the aid of a pair of pliers, fold the hooks so as to firmly secure the sections together. The curved shape of the splint makes it possible to prevent it from sliding during assembly, before folding the hooks and further facilitates the assembly of the splints, in particular for the positioning of the second splint on the same sections, the first splint being correctly positioned, even if the cable tray is slightly sloped. Throughout the description, the terms "comprising one" or "comprising one" should be understood as being synonymous respectively with the terms "comprising at least one" and "comprising at least one", unless the opposite is specified.

Value ranges are understood to include terminals unless the opposite is specified.

Claims (10)

REVENDICATIONS1. Eclisse (1) for the assembly of two sections (25) of cable tray, in particular of substantially rectangular shape, extending generally on the one hand in length along a longitudinal axis (X) between a first and a second lateral edges (2, 3), and secondly in width along a transverse axis (Y) perpendicular to the longitudinal axis (X) between a first and a second longitudinal edges (4, 5), the splint (1) comprising at least two assembly hooks (6) and at least two bosses (7) extending parallel to the transverse axis (Y) from the first longitudinal edge (4) to the second longitudinal edge (5). 2. Eclisse according to claim 1, characterized in that it comprises exactly three hooks assembly (6) and two bosses (7). 3. Eclisse according to claim 1 or 2, characterized in that it comprises, between the first and second lateral edges (2, 3), successively, an assembly hook (6), a boss (7), a hook assembly (6), a boss (7) and an assembly hook (6). 4. Eclisse according to any one of claims 1 to 3, characterized in that the first and second longitudinal edges (4, 5) are straight, extending substantially in the plane formed by the longitudinal axes (X) and transverse (Y), except at the bosses (7). 5. Eclisse according to any one of claims 1 to 4, characterized in that the first and second side edges (2,3) extend in the plane formed by the longitudinal axes (X) and transverse (Y). 6. Eclisse according to any one of claims 1 to 5, characterized in that the thickness of the splice (1) is greater than or equal to 2 mm, in particular between 2 mm and 3 mm. 7. Eclisse according to any one of the preceding claims, characterized in that the bosses (7) are substantially identical to each other and form over the entire width of the splice (1) a substantially rectangular recess, from the first longitudinal edge ( 4) to the second longitudinal edge (5). 8. A method of manufacturing a splice (1) according to any one of claims 1 to 7, characterized in that it comprises the following steps: make three U-shaped cuts in a metal rectangle extending in length along a longitudinal axis (X) and in width along a transverse axis (Y), the legs of the U extending substantially parallel to the longitudinal axis (X), stamping or folding the rectangle in two places to form the bosses (7). ), lift the cutouts to form the assembly hooks (6). 9. A method of mounting a splice (1) according to any one of claims 1 to 7 for assembling two sections (25) of cable truss welded son arranged side-by-side, comprising the steps of: inserting the splice (1) between two horizontal wires (26, 27) of each section, the width of the splice being substantially equal to the distance between said two horizontal wires, pushing on the first lateral edge (2) to allow each hook assembly (6) to engage between it and the longitudinal portion of the splice at least one vertical wire (30; 31; 32; 33), deform each hook assembly (6) to block said or said vertical wire (s) (30; 31; 32; 33) and thus fix the splint (1) while assembling the two sections (25). 10. Set of two sections (25) of welded wire mesh cable trays assembled with the aid of two fishplates (1) according to any one of claims 1 to 7, characterized in that the fishplates (1) have each a width adapted to be inserted between two horizontal wires (26, 27) of the cable tray sections (25) and a depth of bosses (7) provided to allow the splice (1) to come into contact with the said horizontal wires (26, 27) at the bosses, irrespective of any bending of the sections or the cable tray.