GB2485071A

GB2485071A - Coupleable wire mesh cable tray

Info

Publication number: GB2485071A
Application number: GB1118703.6A
Authority: GB
Inventors: Juan Jose Martinez Ramos; Carlos Dominguez Rodriguez
Original assignee: Pequeno Material Electrico SA PEMSA
Current assignee: Pequeno Material Electrico SA PEMSA
Priority date: 2010-10-29
Filing date: 2011-10-28
Publication date: 2012-05-02
Anticipated expiration: 2031-10-28
Also published as: GB2485071B; ES2355992A1; GB201118703D0; FR2966987A1; FR2966987B1; ES2355992B1

Abstract

A wire mesh cable tray comprises several longitudinal 2, 2â and U-shaped transversal 3â , 3â â wires coupled to each other to form a base surface and two lateral surfaces. The tray has two opposite ends A, B with complimentary structures to enable end A of one tray to couple with end B of another tray. At end A, the base longitudinal wires 2 and at least two lateral longitudinal wires 2â comprise: an inward bend 6, 8 before coupling with the penultimate transversal wire 3â ; and a rounded peak 7, 9 before coupling with the last transversal bar 3â . The space between the bends/peaks and the respective coupling point on the transversal wire is sufficient to accommodate a section of transversal wire. At end B, at least the last two transversal wires 3â â have: two rounded peaks 10, 11 on each vertical section, located before coupling with the lateral longitudinal wires 2â ; and downward rounded peaks 12 before coupling with the corresponding base longitudinal wires. The base longitudinal wires and at least two lateral longitudinal wires 2â comprise: an inward double bend 15, 18 before coupling with the penultimate transversal wire 3â â ; a straight section parallel to the longitudinal direction of the tray; another inward double bend 16, 19; another straight section; and an outward double bend 17, 20 before coupling with the last transversal wire 3â â .

Description

COUPLEABLE WiRE MESH CABLE TRAYS AND PROCEDURE FOR

JOINING SECTIONS OF SAID TRAY

Field of the Invention

The present invention refers to a wire mesh cable tray (of the type employed in electrical installations for guiding and holding cables) that has coupleable ends, and a joining procedure for sections of said tray.

Background of the Invention

The wire mesh cable trays that are routinely used in electrical installations are made up of several longitudinal and transversal metal wires intertwined with each other, the transversal metal wires having a U shape and, preferentially, being separated from each other by the same distance, in such a way that they form a base surface and two lateral surfaces.

There are several types of cable trays with coupleable or insertable ends in the market that, on the basis of several sections of said tray, form channels having the desired length for guiding and holding cables.

Spanish patent 223982 for "Coupling assembly for cable trays", describes a coupling assembly for wire type cable trays that comprises some plates that are used for coupling the different sections that form said tray.

There are also other systems that enable coupling the trays without employing additional pieces.

For example, Spanish patent 2316256 for "Coupleable section for cable trays" describes a cable tray consisting in a plurality of sections coupled together by means of some coupling means provided in one of the ends of each section, each section being formed by a plurality of longitudinal and transversal wires coupled to each other and having the shape of a U, in such a way that they delimit a base and a pair of lateral walls. In this section of cable trays the coupling means comprise a plurality of hooks shaped on one of the ends of at least some of said longitudinal wires that are coupled with at least one transversal wire of the adjacent section.

Spanish patent 2279589 for "Mesh cable channel" discloses a mesh cable tray or channel that can be formed, without employing additional connectors, by individual pieces that connect together. This patent describes different configurations of mesh cable channels.

In one of the configurations the ends of each individual piece are configured in a different shape, the width and height of the first end having a narrowed width and height, and the second end not having a narrowed width and height. In another configuration the first end can be narrowed and the second end widened. In another, the first end is not narrowed and the second end is widened (in each case widthwise and heightwise), in such a way that the first end is a piece that can be inserted into a second end of another piece transversally to the longitudinal extension of the pieces. The longitudinal wires are fixed on the longitudinal development of the piece from the second end up to the proximity of the first end on the exterior side of the transversal wires in the shape of a U, with at least two closely adjacent transversal wires being deployed in the second end, forming between them an interstice having the width of a transversal wire. In the first end the longitudinal wires are kinked, being displaced towards the inside, and at least one transversal wire on the same plane of the other transversal wires is fixed on the exterior side of the zones of the longitudinal wires that follow the kink.

The solutions for coupling that do not employ additional accessories can become loose, which on occasion means that the union will not be as satisfactory as when additional attaching accessories are employed.

On the other hand, the solutions that employ accessories do not permit overlapping of the sections they join.

Summary of the Invention

Therefore, the object of the present invention is to provide a coupleable wire mesh cable tray allows overlapping and tight union of the sections forming the assembly, with the possibility of employing additional tightening accessories.

The invention provides a coupleable wire mesh cable tray consisting in several longitudinal and transversal metallic wires coupled to each other, the transversal wires having the shape of a U, in such a way that they form, respectively, a base surface and two lateral surfaces of the tray, the ends of the tray having a different configuration, in which one of the longitudinal ends A comprises: -at least two transversal wires in U as straight vertical sections -the corresponding ends of at least two longitudinal wires on each side, is which comprise a kink oriented towards the interior before its union with the penultimate transversal wire and a rounded interior peak before its union with the last transversal bar, in such a way that both the space between the kink and the penultimate transversal wire and the space between the rounded interior peak and the last transversal wire enable the passing through of the vertical section of a transversal wire, and -the corresponding ends of the longitudinal wires of the base, which comprise an elevated kink before its union with the penultimate transversal wire and a rounded peak elevated before its union with the last transversal wire, in such a way that both the space between the kink and the penultimate transversal wire and the space between the rounded interior peak and the last transversal wire enable the passing through of the horizontal section of a transversal wire, and, in which the other longitudinally opposite end B comprises: -at least two transversal wires in U of straight vertical sections, the majority of which on each side, with a rounded salient peak on each side before its union with the corresponding penultimate lateral longitudinal wire, and with a rounded salient peak on each side before its union with the last corresponding lateral longitudinal wire, and, in large part, straight horizontal sections with downward oriented rounded peaks before their union with the corresponding longitudinal wires of the base situated the closest to the lateral surfaces, -the corresponding ends of at least two longitudinal lateral wires on each side, which comprise an inward oriented double kink before its union with the penultimate transversal bar, followed by a straight section parallel to the longitudinal direction of the tray, and of another inward oriented double kink, another straight section parallel to the longitudinal direction of the tray, and an outward oriented double kink before its union with the last transversal wire, and -the corresponding ends of the longitudinal wires of the base, which comprise an upward oriented double kink before its union with the penultimate transversal wire, followed by a straight section parallel to the longitudinal direction of the tray and of another upward oriented double kink, another straight section parallel to the longitudinal direction of the tray and a downward oriented double kink before its union with the last transversal wire, the last two transversal wires of one end being separated from each other by the same distance as the last two transversal wires of the opposite end.

The invention also provides a procedure for joining the sections of the coupleable mesh cable tray in accordance with claims 8 to 10, which employ two tray sections in accordance with the invention.

By means of this configuration of the ends, an overlapping and secure coupling is obtained of the tray sections that form the assembly, with adjacent transversal wires of both sections and the kink and rounded peaks in the longitudinal wires of a section that serve as stops for the transversal wires of the end of the other section.

Another advantage of the invention is that it is compatible with the union of sections that already exist for cable trays. Indeed, it enables employing additional securing accessories by leaving a sufficient space between some horizontal sections of the ends of the longitudinal wires, both of the base and of the lateral walls.

Other features and advantages of the present invention will be disclosed in the following detailed description of an exemplary embodiment of the object in relation to the accompanying figures.

Brief description of the Drawings

The following is a non-exclusive example of the object of the present invention, with reference made to the accompanying figures, in which: Figure 1 shows a perspective view of a section of coupleable cable tray of the invention.

Figure 2 shows a bottom view of a section of coupleable cable tray of Figure 1.

Figure 3 shows a lateral view of a section of coupleable cable tray of Figure 1 Figure 4 shows a perspective view of an end A of the cable tray of Figure 1.

Figure 5 shows a frontal view of end A of the cable tray of Figure 1 Figure 6 shows a lateral view of end A of the cable tray of Figure 1.

Figure 7 shows a bottom view of end A of the cable tray of Figure 1.

Figure 8 shows a perspective view of end B of the cable tray of Figure 1.

Figure 9 shows a frontal view of end B of the cable tray of Figure 1.

Figure 10 shows a lateral view of end B of the cable tray of Figure 1.

Figure 11 shows a bottom view of end B of the cable tray of Figure 1.

Figure 12 shows a perspective view of two coupled sections of the wire mesh cable tray of the invention.

Figure 13 shows a perspective view of the coupling zone between two sections of the wire mesh cable tray of the invention.

Figure 14 shows another perspective view of two attached sections of the wire mesh cable tray of the invention.

Figure 15 shows a base view of Figure 14 with two attached sections of the wire mesh cable tray of the invention.

Figure 16 shows a lateral view of Figure 14.

Figure 17 shows an amplified detail of Figure 16.

Figure 18 shows an amplified detail of Figure 15.

Figures 19 to 23 show lateral views of the joining procedure of the wire mesh cable tray of the invention.

Figures 24 to 27 show perspective views of the joining procedure of the wire mesh cable tray of the invention.

Figure 28 shows a perspective view of two coupled sections of the wire mesh cable tray of the invention with joining devices for the cable trays.

Figure 29A shows an amplified detail of Figure 28.

Figure 29B shows a detailed view in perspective of two coupled sections of the wire mesh cable tray of the invention with devices for joining the cable trays, said devices being exploded.

Figure 30 shows a frontal view the assembly of Figure 28.

Figure 31 shows a perspective view the assembly of Figure 28.

Figure 32 shows a frontal view of the assembly of Figure 31.

Detailed description of the Invention

Figures 1 to 3 display several views of a section of the coupleable wire mesh cable tray 1 of the invention.

Said tray 1 consists in several longitudinal metallic wires 2, 2' and transversal wires 3, 3', 3" coupled together, transversal wires 3, 3', 3" having the shape of a U, in such a way that they form a base surface and two lateral surfaces with longitudinal wires 2, 2' situated on the base and lateral surfaces, respectively, of tray 1.

Figures 4 to 7 are several views of end A of tray 1, and Figures 8 to 11 are views of end B of tray 1. In said figures it can be seen that ends A and B of tray 1, located in the longitudinal ends of the same, have different configurations. Specifically, end A of tray 1 comprises: -at least two transversal wires 3" in U of straight vertical sections -corresponding ends 4 of at least two lateral longitudinal wires 2' on each side, which comprise inward oriented kink 6 before its union with the penultimate transversal wire, and rounded interior peak 7 before its union with the last transversal bar, in such a way that both the space between kink 6 and the penultimate transversal wire and the space between rounded interior peak 7 and the last transversal wire enable the passing through of the vertical section of a transversal wire, and -corresponding ends 5 of the longitudinal wires 2 of the base, which comprise an elevated kink 8 before its union with the penultimate transversal wire, and a rounded elevated peak 9 before its union with the last transversal wire, in such a way that both the space between kink 8 and the penultimate transversal wire and the space between rounded interior peak 9 and the last transversal wire enable the passing of the horizontal section of a transversal wire, The other longitudinally opposite end B comprises: -at least two transversal wires 3' in U of straight vertical section, the majority of which on both sides, with rounded salient peak 10 on each side before its union with the corresponding penultimate lateral longitudinal wire, and with rounded salient peak 11 on each side before its union with the last corresponding lateral longitudinal wire, and, in large part, straight horizontal sections with downward oriented rounded peaks 12 before their union with the corresponding longitudinal wires of the base situated the closest to the lateral surfaces, -corresponding ends 13 of at least two longitudinal lateral wires 2' on each side, which comprise an inward oriented double kink 15 before its union with the penultimate transversal bar, followed by a straight section parallel to the longitudinal direction of tray 1, and of another inwardly oriented double kink 16, another straight section parallel to in the longitudinal direction of tray 1, and an outward oriented double kink 17 before its union with the last transversal wire, and -corresponding ends 14 of the longitudinal bars 2 of the base, which comprise upward oriented double kink 18 before its union with the penultimate transversal wire, followed by a straight section parallel to the longitudinal direction of tray 1 and of the other upward oriented double kink 19, another straight section parallel to the longitudinal direction of tray I and downward oriented double kink 20 before its union with the last transversal wire, As can also be observed in said figures, the last two transversal wires 3' of end A are separated from each other by the same distance as the last two transversal wires 3" of opposite end B. The space before kink 7 and kink 6 enable the insertion of a transversal wire.

Preferably in end A the space between kink 6 of longitudinal wires 2' of the sides and the base and the penultimate wire, as well as the space between rounded peaks 7 of longitudinal wires 2' of the sides and the base and the last transversal wire, is substantially the same as the width of a transversal wire of tray 1. In this way a better fitting is obtained when coupling two tray sections.

In said figures it can also be observed that consecutive transversal wires 3 in a U shape in the central portion can be equidistant.

Inward oriented kinks 6 of one of ends 4 of longitudinal wires 2' of each side can comprise a straight section inclined with respect to the longitudinal direction of tray 1 and a rounded section, as can be observed in the figures. At the same time, upward kinks 8 of one of ends 5 of longitudinal wires 2 of the base can comprise a straight section that rises with an inclination with respect to the longitudinal direction of tray I and a descending section that is rounded at the continuation of its final part.

Kinks 6, 8 and peaks 7, 9 can adopt other salient shapes. However, it is preferable to adopt rounded shapes for the purpose of avoiding sharp salients and possible damages to the cables or workers.

In one of ends 13 of longitudinal wires 2' of each side, the second straight section parallel to the longitudinal direction of tray 1, located after a second inward oriented kink, can be found placed towards the interior, with respect to the main section of the corresponding longitudinal wire 2', at a distance that is sensibly equal to that of threaded rod 21 of joining device 22 of the cable tray sections.

Likewise, in one of ends 14 of longitudinal wires 2 of the base, the second straight section parallel to the longitudinal direction of tray 1, located after the second upward elevated kink can be found elevated with respect to the main section of the corresponding longitudinal wire 2 at a distance that is sensibly equal to that of a threaded rod 21 of joining device 22 of the cable tray sections.

Figures 12 to 18 show several views of the assembly formed by two wire mesh cable tray sections 1, 1' of the invention coupled at their ends. A detail in perspective of the assembly is represented in Figure 13, in which the final coupling position of the ends of both sections of trays 1, 1' can be observed.

Figures 19 to 27 depict the different steps followed in the procedure for the union of wire mesh cable tray sections 1, 1' of the invention.

Figure 19 shows two tray sections 1, 1' of the invention. In the first section, placed below, end A' and its part adjacent to said end are depicted, whereas in the second section, placed a little higher, its end B and its part adjacent to said end are depicted.

Figures 20 and 24 show the first step of the joining or coupling procedure, in which end B of the second section is placed on top of end A' of the first section.

Figures 21 and 25 show the second step of the joining procedure, in which end B of the second section is inserted in the space of end A' of the first section. The penultimate transversal wire in U of end B of the second section is placed adjacent to the last transversal wire in U of the end of A' of the first section, through the interior part of said wire, and the last transversal wire in U of end B of the second section is placed adjacent to the penultimate transversal wire in U of end A' of the first section, through the interior part of said wire.

Figures 22 and 26 show the third step of the joining procedure that consists in vertically lowering the second section of tray 1 onto the first section of tray 1'. The lateral sections of transversal wires 3" of the end of the second section of tray 1 occupy the spaces between kinks 6 and the penultimate transversal wire of section A' of tray 1' and the spaces between rounded peaks 7' and the last transversal wire of section A' of tray 1'.

Figures 23 and 27 show the final situation after the coupling process, with the lowering of the second section of tray 1 until the horizontal section of transversal wires 3" in U of the second section of tray 1 makes contact with longitudinal wires 2 of the first section of tray 1', lodging itself in the spaces located between kinks 8 and the penultimate transversal wire of section A' of tray 1' and in the spaces between rounded peaks 9 and the last transversal wire of section A' of tray 1'.

In this way the blockage of trays 1, 1' in the longitudinal direction of the same and also in the lateral direction is obtained.

Figures 28, 29A, 29B and 30 are different depictions of the two coupled sections of wire mesh cable trays 1, 1' of the invention with joining devices 22 of wire mesh cable tray 1, 1'.

These joining devices 22 of tray cables 1, 1' can be formed of drilled plaques through which a threaded screw or rod is introduced or attached, and -Il-several examples of devices of this type that can be obtained based on Spanish utility models 1043232 and 1070922 of the applicant of the present invention.

In continuation of the above steps of the joining procedure of the sections of wire mesh cable trays 1, 1' of the invention the following steps may be added which make use of these joining devices 22 of cable trays 1, 1': -the placement of a threaded rod of a joining device 22 of the sections of cable trays 1, 1' in the space that forms the second straight parallel section in the longitudinal direction of the tray placed on end B of longitudinal wires 2' of each side and the straight section parallel to the longitudinal direction of the tray placed on end A' of longitudinal wires 2' of each side before the final rounded interior peak 7.

-tightening of joining devices 22 of tray cables 1, 1' placed on the sides.

The following steps can also be added, with which the assembly depicted in Figures 28 to 30 would be obtained: -placement of threaded rod 21 of joining device 22 of cable tray sections 1, 1' in the space that forms the second straight section parallel to the longitudinal direction of tray 1 located on end B of longitudinal wires 2' of each side and the straight section parallel to the longitudinal direction of tray 1' located on end A' of longitudinal wires 2' of each side before the final rounded interior peak 7.

-tightening of joining devices 22 of tray cables 1, 1' placed on the base.

In this way complete blockage of the coupling between trays 1, 1' is obtained given that relative movement in the vertical direction will also be impeded.

Figures 31 and 32 depict two coupled sections of wire mesh cable trays 1, 1' of the invention with joining devices 22 of wire mesh cable trays 1, 1' and a cover 23 coupled to upper longitudinal wires 2' of trays 1, 1' that are joined. As can be seen the configuration of ends B, A' of trays 1, 1' of the invention also permit placement of conventional covers 23 for this type of trays 1, 1'. -12-

Although some embodiments of the invention have been described and depicted, it is obvious that modifications can be made to them within their scope, and that the invention should not be considered limited to said embodiments, but rather only to the content of the following claims.

Claims

CLAIMS1. Coupleable wire mesh cable tray (1) consisting in several longitudinal (2, 2') and transversal (3, 3', 3") metallic wires coupled to each other, transversal wires (3, 3', 3") having a U shape, in such a way that they form a base surface and two lateral surfaces with longitudinal wires (2, 2') placed on the base and the lateral surfaces of tray (1), respectively and ends (A, B) of tray (1) having different features characterized in that one of longitudinal ends (A) comprises: -at least two transversal wires (3') in U as straight vertical sections -corresponding ends (4) of at least two longitudinal wires (2') on each side, which comprise a kink (6) oriented towards the interior before its coupling with the penultimate transversal wire and rounded interior peak (7) before its coupling with the last transversal bar, in such a way that both the space between kink (6) and the penultimate transversal wire and the space between the rounded interior peak (7) and the last transversal wire enable the passing through of the vertical section of a transversal wire, and -corresponding ends (5) of the longitudinal wires (2) of the base, which comprise an elevated kink (8) before its union with the penultimate transversal wire and a rounded peak (9) elevated before its union with the last transversal wire, in such a way that both the space between kink (8) and the penultimate transversal wire, and the space between the rounded interior peak (9) and the last transversal wire enable the passing through of the horizontal section of a transversal wire, and, in that the other longitudinally opposite end B comprises: -at least two transversal wires (3") in U of straight vertical section, the majority of which on both sides, with rounded salient peak (10) on each side before its union with the corresponding penultimate lateral longitudinal wire, and with rounded salient peak (11) on each side before its union with the last corresponding lateral longitudinal wire, and, in large part, straight horizontal sections with downward oriented rounded peaks ( 12) before their union with -14-the corresponding longitudinal wires of the base situated the closest to the lateral surfaces, -corresponding ends (13) of at least two longitudinal lateral wires (2') on each side, which comprise inward oriented double kink (15) before its union with the penultimate transversal bar, followed by a straight section parallel to the longitudinal direction of tray (1), and of another inward oriented double kink (16), another straight section parallel to the longitudinal direction of tray (1), and outward oriented double kink (17) before its union with the last transversal wire, and -corresponding ends (14) of the longitudinal wires (2) of the base, which comprise upward oriented double kink (18) before its union with the penultimate transversal wire, followed by a straight section parallel to the longitudinal direction of tray (1) and of another upward oriented double kink (19), another straight section parallel to the longitudinal direction of tray (1) and downward oriented double kink (29) before its union with the last transversal wire, the last two transversal wires (3') of one end (A) being separated from each other by the same distance as the last two transversal wires (3") of the opposite end (B).
2. Coupleable wire mesh cable tray (1), in accordance with claim 1, characterized in that on end A the space between kinks (6, 8) of longitudinal wires (2', 2) of the sides and the base, and the penultimate transversal wire, as well as the space between rounded peaks (7, 9) of longitudinal wires (2', 2) of the sides and the base, and the last transversal wire, is substantially the same as the width of a transversal wire of tray (1).
3. Coupleable wire mesh cable tray (1), in accordance with any of the previous claims, characterized in that consecutive transversal wires (3) in U shape of the central portion are equidistant
4. Coupleable wire mesh cable tray (1), in accordance with any of the previous claims, characterized in that inward oriented kinks (6) of one of ends (4) of longitudinal wires (2') of each side comprise an inclined straight section with respect to the longitudinal direction of tray (1) and a rounded section.
5. Coupleable wire mesh cable tray (1), in accordance with any of the previous claims, characterized in that upward oriented kinks (8) of one of ends (5) of longitudinal wires (2) of the base comprise a straight section that rises with an inclination with respect to the longitudinal direction of tray (1) and a descending section that is rounded at the continuation of its final part.
6. Coupleable wire mesh cable tray (1), in accordance with claim 1, characterized in that on one of ends (B) of longitudinal wire (2') of each side the second straight section parallel to the longitudinal direction of tray (1), located after the second inward oriented kink (16) can be found placed towards the inside with respect to the main section of the corresponding longitudinal wire (2'), at a distance that is sensibly equal to that of threaded rod (21) of joining device (22) of cable tray sections (1, 1').
7. Coupleable wire mesh cable tray (1), in accordance with any of the previous claims, characterized in that in one of ends B of longitudinal wires (2) of the base, the second straight section parallel to the longitudinal direction of tray (1), located after the second upward elevated kink (19) can be found elevated with respect to the main section of the corresponding longitudinal wire (2) at a distance that is sensibly equal to that of a threaded rod (21) of a joining device (22) of sections of cable trays (1, 1').
8. Procedure for joining sections of coupleable wire mesh cable trays (1, 1') that employs two tray sections of claims 1 to 5 characterized in that it comprises the steps of: -placement of end (B) of the second section on top of end (A') of the first section.-insertion of end (B) of the second section in the space of end (A') of the first section, placing the penultimate transversal wire in U of end (B) of the second section adjacent to the last transversal wire in U of the end of (A') of the first section, through the interior part of said wire, and placing the last transversal wire in U of end (B) of the second section adjacent to the penultimate transversal wire in U of end (A') of the first section, through the internal part of said wire.-vertically lowering of the second section of tray (1) onto the first section of tray (1'), with the lateral sections of transversal wires (3") of the end of the second section of tray (1) occupying the spaces between kinks (6, 8) and the penultimate transversal wire of section (A') of the tray and the spaces between rounded peaks (7, 9) and the last transversal wire of section (A') of the tray.-final coupling with the lowering of the second section of tray (1) until the horizontal section of transversal wires (3") in U of the second section of tray (1) makes contact with longitudinal wires (2) of the first section of tray (1'), lodging itself in the spaces located between kinks (8) and the penultimate transversal wire of section (A') of the tray and in the spaces between rounded peaks (9) and the last transversal wire of section (A') of the tray.
9. Procedure for joining sections of coupleable wire mesh cable trays (1, 1') that employs two tray sections of claims 6 to 7 characterized in that it comprises the steps of: -placement of end (B) of the second section on top of end (A') of the first section -insertion of end (B) of the second section in the space of end (A') of the first section, placing the penultimate transversal wire in U of end (B) of the second section adjacent to the last transversal wire in U of end (A') of the first section though the internal part of said wire, and placing the last transversal wire in U of end (B) of the second section adjacent to the penultimate transversal wire in U of end (A') of the first section though the interior part of said wire.-vertically lowering of the second section of tray (1) onto the first section of tray (1'), with the lateral sections of transversal wires (3") of the end of the second section of tray (1) occupying the spaces between kinks (6, 8) and the penultimate transversal wire of section (A') of the tray and the spaces between rounded peaks (7, 9) and the last transversal wire of section (A') of the tray.-final coupling, with the lowering of the second section of tray (1) until the horizontal section of transversal bars (3") in U of the second section of tray (1) makes contact with longitudinal bars (2) of the first section of tray (1'), lodging itself in the spaces located between kinks (8) and the penultimate transversal wire of section (A') of the tray and in the spaces between rounded peaks (9) and the last transversal wire of section (A') of the tray.-placement of a threaded rod (21) of a joining device (22) of the sections of cable trays (1, 1') in the space that forms the second straight parallel section in the longitudinal direction of tray (1) placed on end (B) of longitudinal wires (2') of each side and the straight section parallel to the longitudinal direction of tray (1') placed on end (A') of longitudinal wires (2') of each side before the final rounded interior peak (7).-tightening of joining devices 22 of tray cables 1, 1' placed on the sides.
10. Procedure for joining sections of coupleable wire mesh cable trays (1, 1'), in accordance with claim 9, characterized in that it comprises the additional steps of: -placement of threaded rod (21) of joining device (22) of cable tray sections (1, 1') in the space that forms the second straight section parallel to the longitudinal direction of tray (1) located on end (B) of longitudinal wires (2) of the base and the straight section parallel to the longitudinal direction of tray (1') located on end (A') of longitudinal wires (2) of the base before final rounded interior peak (9).-tightening of joining devices (22) of tray cables (1, 1') placed on the base.
11. A coupleable wire mesh cable tray substantially as herebefore described with reference to and as shown in Figures 1 to 11 of the accompanying drawings.
12. A procedure for joining sections of coupleable wire mesh cable trays in accordance with claim 11, substantially as herebefore described with reference to and as shown in Figures 19 to 23.