WO2017138856A1

WO2017138856A1 - Lining of holder for electrical cables

Info

Publication number: WO2017138856A1
Application number: PCT/SE2017/050039
Authority: WO
Inventors: Gunnar KRANTZ
Original assignee: Consido Ab
Priority date: 2016-02-08
Filing date: 2017-01-17
Publication date: 2017-08-17

Abstract

Lining (10) of a holder for electrical cables, such as a cable ladder or the like, the lining (10) comprising a fastening means (11), a first cover means (141), which at its one side is provided with a collar (15) arranged to grip parts of the fastening means (11), and that the first cover means (141) is, at its other side, provided with a mounting hook (17) arranged to grip parts of the fastening means (11), a second cover means (142), which at its respective sides is identically formed as the first cover means (141 ) and arranged to be mounted opposed and connected to the first cover means (141).

Description

Lining of holder for electrical cables Technical Field

The present invention relates to a lining of a holder for electrical cables such as a cable ladder or the like.

Background of the Invention

By the document WO 2014/068382, a cable cover assembly or lining for a cable ladder is previously known. This lining is formed with cover plates, which are directly connected to the cable ladder. For the maintenance of the cables of the cable ladder, it is required that both cover plates are loosened and removed individually from the cable ladder. To remount the cover plates, screws have to be fitted-in through holes in the plates and in the cable ladder and in addition be provided with a nut.

Thus, such maintenance requires a time-consuming dismounting and subsequent mounting.

The Object of the Invention

The object of the present invention is to provide a new type of lining, which may act as carrier for additional equipment such as lighting fittings and

loudspeakers.

In addition, the object is to afford fitters and maintenance staff a lining which facilitates service and mounting and which thereby will be time-saving for such occupational groups.

Furthermore, the invention affords a lining which easily can be adapted to varying installation solutions.

Summary of the Invention

By the present invention, as the same is seen in the independent claim, the above-mentioned objects are met, whereby said disadvantages have been eliminated. Suitable embodiments of the invention are defined in the dependent claims.

The invention concerns a lining of a holder for electrical cables, such as a cable ladder or the like. The lining comprises a fastening means, which is arranged to support the lining in a suitable way. The lining comprises furthermore a first cover means, which at its one side is provided with a collar arranged to grip parts of the fastening means. The first cover means is, at its other side, provided with a mounting hook arranged to grip parts of the fastening means. The lining comprises a second cover means, which at its respective sides is identically formed as the first cover means and arranged to be mounted opposed and connected to the first cover means. Thus, the cover means are asymmetrical in a cross-section wherein two cover means may be mounted together opposed to each other.

The cover means may in this connection be manufactured as a profile, preferably of aluminium, which profile is cut into suitable lengths to form the first cover means and the second cover means.

In one embodiment of the invention, the first cover means and the second cover means have identical cross-sections taken perpendicular to the respective longitudinal direction of the cover means.

In one embodiment of the invention, one side of the cover means is provided with a lateral support, which for the first cover means is arranged to abut against said fastening means when the cover means is mounted. The lateral support provides a defined horizontal position or lateral position for the cover means, which facilitates the mounting of the cover means.

In one embodiment of the invention, the other side of the cover means is provided with a bottom support, which for the first cover means is arranged to abut against said fastening means when the cover means is mounted. The bottom support provides a defined vertical position or height position for the cover means, which also facilitates the mounting of the cover means.

In one embodiment of the invention, the collar of the cover means is placed on the outside of a longitudinal, opened groove in the cover means and directed away from the opening of the groove.

In one embodiment of the invention, the opening of the groove and a support seam arranged on the cover means are directed in the same direction.

The opening of the groove and the support seam, respectively, are placed on each side of the cover means so that the upper, second, cover means fits in the lower, first, cover means when the cover means are mounted against each other. In one embodiment of the invention, the mounting hook of the cover means is situated on a mounting arm on which the support seam, essentially perpendicularly to the mounting arm, is formed.

In one embodiment of the invention, the cover means are formed with parallel side edges. This embodiment means that two opposed mounted cover means may have a lining having parallel sides, which implies a simple fitting-in when mounting the lining. These parallel side edges may also constitute mounting surfaces for lightning, illuminated sign, etc.

In one embodiment of the invention, the opening of the groove and the support seam are directed parallel to the side edges. Also this embodiment contributes to the mountability.

In one embodiment of the invention, the support seam of the second cover means abuts against the bottom of the groove of the first cover means and that the bottom of the groove of the second cover means abuts against the support seam of the first cover means when the cover means are assembled.

In one embodiment of the invention, the first cover means is, when the lining is fully mounted, bolted to both sides of the fastening means and the second cover means is solely bolted to the first cover means.

In one embodiment of the invention, the fastening means is formed as a symmetrical profile having a width exceeding the width of the holder for electrical cables on which the fastening means can be mounted, one side of which fastening means is provided with a first mounting bar and the other side of which fastening means is provided with a second mounting bar which two mounting bars are provided with a respective longitudinal slide edge, on which slide edges the first cover means is slidably suspended so as to subsequently be fixed to the fastening means.

In one embodiment of the invention, the cover means is between the sides thereof formed with a surface bulging outward from the holder for electrical cables. Such a bulging surface is relatively soil repellent and is easy to keep clean upon washing.

The invention also concerns a lining of a holder for electrical cables, such as a cable ladder or the like, which lining comprises a fastening means mountable on a holder for electrical cables, one side of which fastening means is provided with a first mounting bar and the other side of which fastening means is provided with a second mounting bar. The fastening means has a width exceeding the width of the holder for electrical cables on which the fastening means can be mounted. The two mounting bars are provided with a respective longitudinal slide edge. The slide edges of the fastening means may be parallel. The lining comprises furthermore a first cover means, which at its one side is provided with a collar arranged to grip the slide edge of said first mounting bar. The first cover means is, at its other side, provided with a mounting hook arranged to grip the slide edge of said second mounting bar. The fastening means is dimensioned to carry extra equipment such as lighting fittings, surveillance cameras, loudspeakers, etc. The cover means is curved to contain such extra equipment. The curvature is formed as a circular sector or as a sector of an ellipse.

In one embodiment of the invention, the cover means is also provided with a lateral support arranged to abut against said first mounting bar. This lateral support acts as an anvil upon mounting and dismounting of the cover means.

In one embodiment of the invention, the other side of the cover means is provided with a bottom support arranged to abut against the second mounting bar when the cover means is mounted. The bottom support gives a reference in the circumferential direction to a fitter when mounting the cover means. Thus, the bottom support facilitates the mounting of the cover means.

In one embodiment of the invention, the collar of the first cover means is placed on the outside of a longitudinal groove provided with an opening in one side of the first cover means and directed in opposite direction compared with the opening of the groove. In a vertical mounting, a lower cover means may then be hanging on the fastening means.

In one embodiment of the invention, the mounting hook of the fastening means is situated on a mounting arm on which a support seam essentially perpendicularly to the mounting hook is formed.

In one embodiment of the invention, the opening of the groove and the support seam on the first cover means are directed in the same direction. This means that two cover means can be mounted against each other for a completely mounted lining.

In one embodiment of the invention, the fastening means is formed as a symmetrical profile.

In one embodiment of the invention, the first cover means is formed with parallel side edges. This embodiment means that two opposed mounted cover means may have a lining having parallel sides, which implies a simple fitting-in when mounting the lining.

In one embodiment of the invention, a second cover means is at its respective sides identically formed as the first cover means and arranged to be mounted opposed the first cover means so that the support seam of the second cover means abuts against the bottom of the groove of the first cover means and that the bottom of the groove of the second cover means abuts against the support seam of the first cover means. This embodiment provides a complete lining of a hanging cable ladder mounted in a pendulum.

The two cover means are identical but asymmetrically shaped and may be manufactured as profiles which after manufacture are cut into suitable lengths. Hole making may be made for pendulum suspension, lighting fittings, cameras, loudspeakers, etc.

The invention also discloses a method for the opening of a lining formed according to what has been described above by the screws at the side edge of the other side being removed, wherein the first cover means is lifted at said side edge after which the first cover means is displaced out from the fastening means so that the mounting hook can be brought past the second mounting bar and be turned down from the fastening means so that the first cover means will remain hanging at the second mounting bar on the fastening means. By the design shown, simple screws for sheet metal may be used, which are self-tapping. Longitudinal provisions in the form of notches for the screws are made in the profiles.

Preferably, a lining according to the invention is intended to be used in horizontal installations of cable ladders and cable trays in industrial buildings, on office premises and at platforms, but also other fields of application are feasible within the scope of the invention.

Brief Description of the Drawings

Now, the invention will be described in more detail, references being made in connection with the accompanying drawing figures. The drawing figures show only explanatory sketches intended to facilitate the understanding of the invention.

Figure 1 shows a section through a lining according to the invention.

Figure 2 shows a detail of one side of the lining according to Figure 1 . Figure 3 shows a detail of the other side of the lining according to Figure 1 .

Figure 4 shows the lining in an open dismounted state.

Figure 5a shows a partial section of the other side in a mounted state. Figure 5b shows a partial section of the other side in a partly dismounted state.

Figure 5c shows a partial section of the other side in a further dismounted state.

Figure 5d shows a partial section of the other side in an entirely dismounted state.

Description of the Invention

Figure 1 shows a holder 1 , in the form of a cable ladder, which is suspended in a pendulum 2, which in turn is bolted to a ceiling 3. The cable ladder works as a holder for electrical cables 4, which provide different consumers, not shown, with driving voltage. Such consumers may be lighting fittings, surveillance cameras, lamps, loudspeakers, fans, etc. The holder 1 may be mounted indoors as well as outdoors and be oriented horizontally or vertically. The cables 4 are attached to the holder 1 in a conventional way, for instance by lashing.

In order to contain said holder, as protection against dust, wind, and weather, and to give the holder with the electrical cables and the consumers an aesthetic impression and simultaneously provide an easily cleanable surface, a lining 10 is mounted on the holder 1 . The lining 10 comprises a fastening means 1 1 in the form of a symmetrical profile, preferably of aluminium. The fastening means 1 1 is mounted on the holder 1 in a suitable way, for instance by a conventional screw joint. One side Si of the fastening means 1 1 is provided with a first mounting bar 12 and the other side S2 of the fastening means 1 1 is provided with a second mounting bar 13. To the mounting bars 12, 13 of the fastening means 1 1 , a first cover means 141 is connected by a screw joint, in the figure indicated by a line. Furthermore, a second cover means 142, which is identically formed at the sides Si and S2 thereof as the first cover means 141 , is turned over and placed on top of the first cover means 141 . Said second cover means 142 is attached to the first cover means 141 by a screw joint, also in the figure indicated by a line. Figure 2 shows an enlarged section view from Figure 1 , which shows that the first cover means 141 at its one side edge 23 is provided with a collar 15 which grips a slide edge 121 situated on the first mounting bar 12 of the fastening means 1 1 . The slide edge 121 extends along the entire fastening means 1 1 , wherein the cover means 141 can be displaced into an optimum setting in relation to the fastening means 1 1 . The first cover means 141 is also provided with a lateral support 16 directed toward the first mounting bar 12 of the fastening means 1 1 . The lateral support 16 abuts against the first mounting bar 12 at the same time as the collar 15 grips over the slide edge 121 when the first cover means 141 is mounted. The collar 15 of the first cover means 141 is placed on the outside of a longitudinal, opened groove 21 in the first cover means 141 , the collar 15 being directed away from the opening of the groove 21 . The groove 21 is formed of the side edge 23 of the cover means 141 and an essentially parallel groove wall 24, the groove being U-shaped with the opening facing away from the lateral support 16.

Also Figure 3 shows an enlarged section view from Figure 1 where the first cover means 141 at its second side edge 33 is provided with a mounting hook 17 situated on a mounting arm 31 , which extends inward toward the fastening means 1 1 to be able to grip a slide edge 131 of the second mounting bar 13. The other side 33 of the cover means 141 is provided with a bottom support 18 arranged to abut against the second mounting bar 13 when the cover means 141 is mounted. On the mounting arm 31 , a support seam 32 is essentially

perpendicularly arranged.

Both mounting bars 12, 13 are provided with a respective longitudinal slide edge 121 , 131 , which slide edges are oriented perpendicularly out from the fastening means 1 1 and essentially parallel to the side edge of a holder 1 . Such as the lining 10 is shown in Figures 1-3, the two mounting bars of the fastening means 1 1 are directed upward while the lateral support 16 rests horizontally against the fastening means 1 1 and the bottom support 18 supports the fastening means 1 1 from below. In addition, the opening of the groove 21 and the support seam 32 on the first cover means 141 are directed in the same direction. As also seen in Figures 1-3, the fastening means 1 1 is formed as a symmetrical profile. The first cover means 141 is formed with parallel side edges 23, 33. The opening of the groove 21 and the support seam 32 are directed parallel to the side edges 23, 33. Furthermore, the side edges 23, 33 are parallel to the mounting bars 12, 13 of the fastening means 1 1 . When the lining is mounted. This design of the cover means 141 , the profile, implies that a second cover means 142 can be identically formed as the first cover means and, by being turned over, be mounted together with each other as shown in Figure 1 .

As seen in Figures 2-3, the cover means 141 is provided with longitudinal grooves 25, 26, 35, which indicate a reference for the screws that should join the parts.

Figure 4 shows an opening of the other side 33 of the first cover means 141 of the lining 10, which has been dismounted from the mounting bars 12, 13 of the fastening means 1 1 by all screws having been removed, wherein the second cover means 142 has been lifted up and temporarily attached to the pendulum 2 by means of a locking wedge 42, which for the type of pendulum shown has been introduced from below into the elongate holes 43 of the pendulum. The second side edge 33 of the first cover means 141 has been hooked off from the mounting bar 13 of the fastening means 1 1 and been turned downward, the collar 15 at the first side edge 23 of the cover means 141 hanging on the slide edge 121 of the mounting bar 12 so that maintenance of contained parts can be made without the lining being completely dismounted. In other types of cable ladder suspensions, other types of temporary fastening devices as alternative to the locking wedge 42 may be used, for instance hooks, lines, snap-hooks or the like, which are temporarily connected from above.

Figure 5a shows a position at the other side S2 before the dismounting and "the turning down" of the first cover means 141 , wherein the screws, the positions of which are indicated by dash-dotted lines, at the other side S2 of the fastening means 1 1 have been unscrewed after which the second cover means 142 can be lifted away from the support seam 32 in the direction of arrow "a".

Figure 5b shows that the second cover means 142 has been lifted so that the first cover means 141 with its support seam 32 and its mounting hook 17 can be displaced outward in the direction of arrow "b".

Figure 5c shows the displaced position of the first cover means 141 to a position where the mounting hook 17 abuts against the slide edge 131 of the second mounting bar 13, i.e., the displacement has been made toward the right in the figure. From the position shown, a displacement then takes place according to arrow "c" and then a displacement according to the direction of arrow "d". In the figure, it is shown that the second cover means 142 has sprung down from a previous position shown in Figure 5b and again partly overlaps the support seam 32.

Figure 5d shows the position after these displacements "c" and "d" according to Figure 5c. Thus, the cover means 141 can be lifted away from the fastening means 1 1 so that the mounting hook 17 can pass over the slide edge 131 of the mounting bar 13 and be detached from the fastening means 1 1 . In this connection, the cover means 141 can be elastically turned downward according to arrow "e" so as to afford access inside the lining 10, which has been shown in Figure 4. As also shown in Figure 4, the second cover means 142 will be freely hanging.

As seen in Figure 5d, the mounting arm 31 and the bottom support 18 are parallel and extend inward toward the fastening means 1 1 perpendicularly from the other side 33 of the cover means 141 . The mounting arm 31 with its mounting hook 17 is longer than the bottom support 18 to allow the lifting shown according to Figure 5c.

Figures 4, 5a, 5b, 5c, and 5d show a dismounting of a lining according to the invention whereas a mounting of the lining is carried out in the opposite order. Mounting is carried out by the first side edge 23 of the first cover means 141 being suspended on the slide edge 121 of the mounting bar 12 to the position shown in Figure 4 after which a turning up and stretching of the cover means 141 takes place to the position shown in Figure 5d after which a displacement inward toward the fastening means 1 1 takes place so that the bottom support 18 comes into abutment against the mounting bar 13 of the fastening means 1 1 . Then, the cover means is lowered to the position in Figure 5c so as to then be displaced in over the mounting bar 13 to the position in Figure 5b. A screw joint is applied according to the dash-dotted line after which the second cover means 142 according to Figure 4 is lowered down with its groove over the support seam 32 and is fixed according to Figures 5b and 5a and with its respective support seam in the corresponding groove in the first cover means 141 at the other side of the lining.

Claims

1 . Lining (10) of a holder for electrical cables, such as a cable ladder or the like, characterized in that the lining (10) comprises,

a fastening means (1 1 ),

a first cover means (141 ) which is

at its one side provided with a collar (15) arranged to grip parts of the fastening means (1 1 ) and that the first cover means (141 ) is

at its other side provided with a mounting hook (17) arranged to grip parts of the fastening means (1 1 ).

2. Lining according to claim 1 , characterized in that a second cover means (142) is at its respective sides identically formed as the first cover means (141 ) and arranged to be mounted opposed and connected to the first cover means (141 ).

3. Lining according to claim 2, characterized in that the first cover means (141 ) and the second cover means (142) have identical cross-sections taken perpendicular to the respective longitudinal direction of the cover means (141 , 142).

4. Lining according to claim 3, characterized in that one side of the cover means (141 , 142) is provided with a lateral support (16), which for the first cover means (141 ) is arranged to abut against said fastening means (1 1 ) when the cover means (141 ) is mounted.

5. Lining according to any one of claims 1-2, characterized in that the other side of the cover means (141 , 142) is provided with a bottom support (18), which for the first cover means (141 ) is arranged to abut against said fastening means (1 1 ) when the cover means (141 ) is mounted.

6. Lining according to any one of claims 1-5, characterized in that the collar (15) of the cover means (141 , 142) is placed on the outside of a longitudinal, opened groove (21 ) in the cover means (141 , 142) and directed away from the opening of the groove (21 ).

7. Lining according to claim 6, characterized in that the opening of the groove (21 ) and a support seam (32) arranged on the cover means (141 , 142) are directed in the same direction.

8. Lining according to claim 7, characterized in that the mounting hook (17) of the cover means (141 , 142) is situated on a mounting arm (31 ) on which the support seam (32), essentially perpendicular to the mounting arm (31 ), is formed.

9. Lining according to any one of claims 7-8, characterized in that the cover means (141 , 142) are formed with parallel side edges (23, 33).

10. Lining according to claim 9, characterized in that the opening of the groove (21 ) and the support seam (32) are directed parallel to the side edges (23, 33).

1 1 . Lining according to any one of claims 7-10, characterized in that the support seam (32) of the second cover means (142) abuts against the bottom of the groove (21 ) of the first cover means (141 ) and that the bottom of the groove (21 ) of the second cover means (142) abuts against the support seam (32) of the first cover means (141 ) when the cover means are assembled.

12. Lining according to any one of claims 1-1 1 , characterized in that, when the lining is fully mounted, the first cover means (141 ) is bolted to the fastening means (1 1 ) and that the second cover means (142) is bolted to the first cover means (141 ).

13. Lining according to any one of claims 1-12, characterized in that the fastening means (1 1 ) is formed as a symmetrical profile having a width exceeding the width of the holder for electrical cables on which the fastening means (1 1 ) can be mounted, one side of which fastening means (1 1 ) is provided with a first mounting bar (12) and the other side of which fastening means (1 1 ) is provided with a second mounting bar (13) which two mounting bars (12, 13) are provided with a respective longitudinal slide edge (121 , 131 ), on which slide edges (121 , 131 ) the first cover means (141 ) is slidably suspended so as to subsequently be fixed to the fastening means.

14. Lining according to any one of claims 1-13, characterized in that the cover means (141 , 142) between the sides thereof is formed with a surface bulging outward from the holder for electrical cables.

15. Lining (10) according to any one of claims 1-14, characterized in that the fastening means (1 1 ) is formed with a width exceeding the width of the holder for electrical cables on which the fastening means (1 1 ) can be mounted, one side of which fastening means (1 1 ) is provided with a first mounting bar (12) and the other side of which fastening means (1 1 ) is provided with a second mounting bar (13) which two mounting bars (12, 13) are provided with a respective longitudinal slide edge (121 , 131 ).

16. Lining (10) according to claim 1 , characterized in that the fastening means (1 1 ) is formed with a width exceeding the width of the holder for electrical cables on which the fastening means can be mounted, one side of which fastening means (1 1 ) is provided with a first mounting bar (12) and the other side of which fastening means (1 1 ) is provided with a second mounting bar (13) which two mounting bars (12, 13) are provided with a respective longitudinal slide edge (121 , 131 ).

17. Lining (10) according to claim 16, characterized in that the first cover means (141 ) is at its one side provided with a collar (15) arranged to grip the slide edge (121 ) of said first mounting bar (12) and that the first cover means (141 ) is, at its other side, provided with a mounting hook (17) arranged to grip the slide edge (131 ) of said second mounting bar (12).

18. Lining according to claim 17, characterized in that one side of the first cover means (141 ) is provided with a lateral support (16) arranged to abut against said first mounting bar (12) when the cover means (141 ) is mounted.

19. Lining according to any one of claims 16-18, characterized in that the other side of the first cover means (141 ) is provided with a bottom support (18) arranged to abut against said second mounting bar (13) when the cover means (141 ) is mounted.

20. Lining according to any one of claims 16-19, characterized in that the collar (15) of the first cover means (141 ) is placed on the outside of a longitudinal, opened groove (21 ) in the first cover means (141 ) and directed away from the opening of the groove (21 ).

21 . Lining according to claim 20, characterized in that the opening of the groove (21 ) and a support seam (32) on the first cover means (141 ) are directed in the same direction.

22. Lining according to claim 21 , characterized in that the mounting hook (17) of the cover means is situated on a mounting arm (31 ) on which the support seam (32), essentially perpendicular to the mounting arm (31 ), is formed.

23. Lining according to any one of claims 20-22, characterized in that the first cover means (141 ) is formed with parallel side edges (23, 33).

24. Lining according to claim 23, characterized in that the opening of the groove (21 ) and the support seam (32) are directed parallel to the side edges (23, 33).

25. Lining according to any one of claims 5-24, characterized in that a second cover means (142) is at its respective sides identically formed as the first cover means (141 ) and arranged to be mounted opposed the first cover means (141 ) so that the support seam (32) of the second cover means (142) abuts against the bottom of the groove (21 ) of the first cover means (141 ) and that the bottom of the groove (21 ) of the second cover means (142) abuts against the support seam (32) of the first cover means (141 ).

26. Lining according to claim 25, characterized in that, when the lining is fully mounted, the first cover means (141 ) is bolted to the fastening means (1 1 ) and that the second cover means (142) is bolted to the first cover means (141 ).

27. Lining according to any one of claims 16-26, characterized in that the fastening means (1 1 ) is formed as a symmetrical profile.