Device for fastening cables

Abstract

A device (1) for fastening cables (C), to a support element (S), such as a plate, a tubular support, a U-shaped profile, which device (1) comprises a metal U-bolt having a U-shaped cross section (3) with two opposite wings (103a, 103b) interconnected at one end thereof by a plate (203) positioned orthogonally between said wings (103a, 103b), between which wings (103a, 103b) one or more cables (C) or one or more saddles (2) for housing said cables (C) may be stacked. Each free end of said wings (103a, 103b), opposite to the connection end with said plate (203), is coupled to a hook anchor arm (6), which hook anchor arm (6) extends longitudinally and at least partially beyond the free end of said wings (103a, 103b) and terminates by folding itself to form a hook end (206), which hook end (206) is intended to hook said support (S) on which said device (1) is intended to be hooked, each of said two hook anchor arms (6) being made of a polymeric material.

Description

[0001] DEVICE FOR FASTENING CABLES

[0002] The present invention relates to a device for fastening cables such as coaxial cables, feeder cables, fibre optic cables and energy cables, known as a cable clamps.

[0003] The field of the invention is that of devices used to fasten long-shaped bodies in general such as cables, pipes and the like to a support, for example pylons, used to support telecommunications antennas.

[0004] The support to which the cable clamp is hooked can be a plate in the form of a blade, a circular or oval pipe, or a C-shaped or U-shaped profile, for example a slotted C-shaped or U-shaped profile.

[0005] In this field, it is important that the support device carries out an effective supporting action on the cable, preventing it from slipping or being displaced from its seat by the weight thereof or by the action of the weather.

[0006] Current cable clamps consist of two half-saddles coupled together to form the respective housing seats for the cables to be supported.

[0007] The union between the two half-saddles is made by means of U-bolts within which the saddles are hooked and stacked against each other by the action of a plate pushed by an adjusting and locking screw. The saddles are made of polymeric material while the supports, U-bolts, plate and screw are made of metal.

[0008] In this type of application, there is also the need to reduce or eliminate the negative impact of the passive intermodulation phenomenon, or PIM, on the infrastructure of radio networks. Basically, passive intermodulation occurs when several radio frequency signals from one or more radio base stations mix together in a site housing a cell, resulting in a signal containing a new set of frequencies.

[0009] Unwanted signals due to passive intermodulation are generated due to some form of mechanical non-linearity.

[0010] A major cause is ineffective metal-to-metal contacts in areas affected by high current intensities, such as those within transmission lines or within radio frequency (RF) components. This may be due to imperfectly prepared RF terminations or sub-optimal assembly procedures, loose screws or rivets inside RF components, contaminated or oxidised connector surfaces, or improperly tightened RF connectors.

[0011] Therefore, passive intermodulation has the potential to significantly degrade the service quality of new networks, e.g., LTE (Long Term Evolution) and HDSPA+ (High Speed Downlink Packet Access), and it is of paramount importance for telecommunications operators to reduce the negative effects of passive intermodulation so as to be able to install more advanced network infrastructures capable of supporting broadband data transport, without a significant increase in cost and without compromising performance levels.

[0012] The metal material with which some components of the known cable clamps are made (adjusting and locking screw, thrust-bearing plate and U- bolt, supports) creates passive intermodulation problems on the signal transported by the cable or cables supported by said cable clamps.

[0013] The aim of the present invention is to provide a device for fastening cables capable of stably and securely supporting cable housing saddles or the cables themselves while avoiding the problem of passive intermodulation on the signal transported by the cable(s).

[0014] A further aim of the present invention is to provide a device for fastening cables which may be hooked to different types of supports.

[0015] A further object of the present invention is to provide a device for fastening cables which is easy and inexpensive to make and easily adaptable, not only to the support bracket but also to the number and size of cables to be supported.

[0016] In view of such aims, it has been devised to make, according to the invention, a device for fastening cables (called cable clamps) to a support element, such as a plate, a tubular support, a U-shaped profile or a C- shaped profile or an angular profile, which device comprises a metal U- bolt have a U- shaped cross section with two opposite wings interconnected at one end thereof by a plate positioned orthogonally between said wings, between which wings one or more cables or one or more saddles for housing said cables may be stacked. Each free end of said wings, opposite to the connection end with said plate, is coupled to a hook anchor arm, which hook arm extends longitudinally and at least partially beyond the free end of said wings and terminates by folding itself to form a hook end, which hook end is intended to hook said support on which said device is to be hooked, each of said two hook anchor arms being made of a polymeric material.

[0017] Thanks to the device of the present invention, the cables and / or saddles housing the cables can be stably supported between the wings of the metal U-bolt, and thanks to the fact that said metal U-bolt is not in direct contact with the support, which is also made of metal, the problem of passive intermodulation on the signal transported by the cable(s) is avoided.

[0018] The pair of hook anchor arms made of polymeric material allows the device to be securely and stably fastened, avoiding direct metal (U-bolt)- metal (support) contact, reducing or eliminating passive intermodulation problems (PIM) on the signal transported by the cable(s).

[0019] Furthermore, the fact that a portion of the device (pair of hook anchor arms) is made of a polymeric material, e.g., plastic or glass-fibre reinforced plastic material, makes it simpler and less costly to produce cable clamps which may be hooked to different types of supports, as it is sufficient to change the terminal ends made of polymeric material, which can be made by means of moulding (pair of hook anchor arms) of the U-bolt to have a different cable clamp which may be hooked to a different type of support.

[0020] To clarify the explanation of the innovative principles of the present invention and the advantages thereof with respect to the prior art, one possible illustrative embodiment applying such principles will be described below, with the aid of the attached drawings. In the drawings: - figure 1 represents a perspective view of a device for fastening cables according to the prior art;

[0021] - figure 2 represents a schematic and prospective side view of a device for fastening cables made according to the principles of the present invention hooked to a flat plate support;

[0022] - figure 3 represents a schematic and perspective side view from below of the device of figure 2;

[0023] - figure 4 represents a front, schematic view of the device of figure 2;

[0024] - figure 5 represents a side, schematic view of the device of figure 2;

[0025] - figure 6 represents a schematic and perspective side view from above of the device of figure 2 provided with saddles without cables and support, with exploded parts;

[0026] - figure 7 represents a schematic and perspective side view from above of the device of figure 2 without cables and support, with exploded parts;

[0027] - figures 8a and 8b represent a schematic and perspective side view from above of the two sides of one of the two hook arms of the device of figure 2;

[0028] - figures 9 and 10 represent side, perspective and longitudinal sectional views of a portion of the device of figure 2 at area A of figure 2;

[0029] - figure 11 represents a front, longitudinal sectional view of a portion of the device of figure 2 hooked to the U-bolt;

[0030] - figures 12a and 12b represent a front, longitudinal sectional view of a portion of the device of figure 2, in two different insertion and hooking positions, respectively;

[0031] - figures 13a and 13b represent, respectively, in side, schematic and perspective view from above, the lower half-saddle and the upper halfsaddle forming the stackable saddle in the device for fastening cables made according to the principles of the present invention;

[0032] - figure 14 represents a perspective and longitudinal sectional view of a portion of the half-saddle of figure 13a according to the axis Z, made integral with one of the two wings of the U-bolt, viz., stacked in the device for fastening cables made according to the principles of the present invention;

[0033] - figure 15 represents a schematic and prospective side view from above of a device for fastening cables made according to the principles of the present invention hooked to an L-shaped plate;

[0034] - figure 16 represents a schematic and perspective side view from above of the device only of figure 15 provided with saddles, with exploded parts;

[0035] - figures 17a and 17b represent a schematic and perspective side view from above of the two sides of one of the two hook arms of the device of figure 15;

[0036] - figure 18 represents a schematic and prospective side view from above of a device for fastening cables made according to the principles of the present invention hooked to a U-shaped profile;

[0037] - figure 19 represents a side, schematic view of the device of figure 18;

[0038] - figure 20 represents a schematic and perspective side view from above of the device only of figure 18 provided with saddles with exploded parts;

[0039] - figures 21 a and 21b represent a schematic and perspective side view from above of the two sides of one of the two hook arms of the device of figure 18;

[0040] - figure 22 represents a schematic and perspective side view from below of the device of figure 15 hooked to a pipe support.

[0041] The device for fastening T cables, pipes and other long-shaped bodies C of the prior, illustrated in figure 1 , comprises saddles 2' each formed by a pair of half-saddles 102'a, 102'b which, by their union, create the seats for supporting respective cables C, not illustrated.

[0042] In order to support the saddles 2' on the cable clamp 1 ', this involves a U- shaped U-bolt 3', a plate or thrust-bearing plate 4' and a locking or fastening or adjusting screw 5'.

[0043] The U-shaped U-bolt 3' comprises two arms or wings 103'a and 103'b, a connection body or core 203' of said side arms / wings 103'a and 103'b.

[0044] Preferably said two arms or wings 103'a and 103'b are in the form of a blade, and said connection body or core 203' is in the form of a plate.

[0045] Said connection body or core 203' of the arms 103'a and 103'b comprises a threaded through-hole 7' for the insertion of the locking or fastening or adjusting screw 5' of the thrust-bearing plate 4'.

[0046] As illustrated in figure 1 , the saddles can be of different types: double calibrated saddles, single calibrated saddles, V-shaped saddles.

[0047] The U-bolt 3' has a shaped end 6' which allows hooking to a support S, not shown in figure 1 .

[0048] According to the prior art, the U-bolt 3', screw 5' and plate 4' are made of metal.

[0049] As is well known, in operating condition, one or more saddles 2' for housing one or more cables C are stacked between the arms 103'a and 103'b of the U-bolt 3' and the U-bolt 3' is hooked to the support S.

[0050] The saddles 2' are compressed between the thrust-bearing plate 4' and the support S by means of the force exerted by the locking screw 5' which, screwed into the threaded through-hole 7', is brought abutting with its tip against the upper surface of the plate 4' opposite the lower surface of said plate 4' in contact with the half-saddle 102'a,102'b of a saddle 2.

[0051] Said plate 4' and said saddles 2 are in fact movable and stackable longitudinally between the arms 103'a and 103'b of the U-bolt 3'.

[0052] The following figures show the cable clamp device 1 object of the present invention, and its components.

[0053] The device 1 comprises a metal U-bolt 3 having a U-shaped cross section with two opposite wings 103a, 103b interconnected at one end thereof by a plate 203 positioned orthogonally between said wings 103a, 103b, between which one or more cables C or one or more saddles 2 for housing said cables C may be stacked.

[0054] Each free end of said wings 103a, 103b, opposite to the connection end with said plate 203, is coupled to a hook anchor arm 6, which hook anchor arm 6 extends longitudinally and at least partially beyond the free end of said wings 103a, 103b and terminates by folding itself to form a hook end 206, which hook end 206 is intended to hook a support S (plate in the form of a blade, L-shaped or angular plate, U-shaped plate or pipe) on which the device 1 is intended to be hooked.

[0055] Each of said two hook anchor arms 6 is made of a polymeric material.

[0056] In the illustrated embodiments, said connection plate 203 positioned orthogonally between said wings 103a, 103b is provided with a threaded through-hole 303 for the insertion of a locking screw 5.

[0057] According to an embodiment not illustrated, the tip of the locking screw 5 can abut against the surface of the saddles, in particular against the upper surface of a half-saddle 102a forming the saddle 2, so that one or more saddles 2 for housing C cables, stacked between the wings 103a, 103b of the U-bolt 3, can be tightened between the tip of said locking screw 5 and the support element S.

[0058] According to an illustrated embodiment, the device 1 object of the present invention may be provided in combination with a thrust-bearing plate 4 and a locking screw 5 screwable inside the threaded through-hole 303 provided on the connection plate 203 positioned orthogonally between said wings 103a, 103b.

[0059] The thrust-bearing plate 4 is constrained to said wings 103a, 103b and may translate longitudinally along said wings 103a, 103b.

[0060] The thrust-bearing plate 4 is positioned against one or more cables C or one or more saddles 2 housing said cables C by the action of the force exerted by the tip of said locking screw 5 on the upper surface of said thrust-bearing plate 4.

[0061] The coupling between the metal U-bolt 3 and the hook anchor arms made of polymeric material 6, which allow the device 1 to be hooked to the support S, occurs by means of longitudinal coplanar extensions 203a, 203b in the form of a bayonet which branch off from the edge of each free end of said wings 103a, 103b, opposite to the connection end with the plate 203, which extensions 203a, 203b in the form of a bayonet fit in a corresponding receiving seat 306 provided on each hook anchor arm 6. In an embodiment not illustrated, said receiving seat 306 is obtained within a tunnel element made in a single piece with the arm 6 and provided on one surface of each hook anchor arm 6.

[0062] In the illustrated embodiments, said receiving seat 306 is in the form of a pocket provided near the hook end 206.

[0063] The coupling advantageously occurs by abutting one surface of the hook anchor arm 6 against the outer surface of the wings 103a, 103b and inserting the bayonet end 203a, 203b into the respective seat 206.

[0064] Said seat 206 is provided on the surface of the hook anchor arm 6 placed abutting against the outer surface of the wings 103a, 103b as shown for example in figures 9 and 10.

[0065] Said seat 206 has a sufficient extension to ensure the coupling between U-bolt 3 and arms 6.

[0066] Advantageously, in order to make the coupling between the U-bolt 3 and the hook anchor arms 6 more stable, a window 403 is provided at the edge of each free end of said wings 103a, 103b for the insertion of engagement means provided on each hook anchor arm 6.

[0067] Said window 403 is rectangular and is positioned orthogonal to the median longitudinal line M of each wing 103a, 103b.

[0068] The engagement means are provided on a fastening plate 406, opposite to said folded hook end 206, which fastening plate 406 is positioned, when the arms 6 are mounted on the U-bolt 3, abutting against the outer surface of the wings 103a, 103b.

[0069] The hook anchor arms 6 thus comprise an elongated body which folds into a hook 206 and a fastening plate 406 at the opposite hook end 206.

[0070] The engagement means comprise a flexible fin 106 in a corresponding seat 416 provided on said fastening plate 406, which flexible fin 106 terminates, at the opposite end constrained to the seat 416 of said plate 406, with a radially protruding projecting tab 116 which folds to form a hooking end 126 delimiting an accommodation seat 136 of the perimeter edge 413 of the window 403. As illustrated in the figures, e.g., in figures 8a and 8b, the receiving seat 306 is provided on the same surface of the hook anchor arm 6 from which the hooking tab 116 protrudes.

[0071] As illustrated in figure 9, the receiving seat 306 is provided at the hook end 206 of said arm 6 and the extensions of said hook anchor arm 6 and of said longitudinal coplanar extension 203a, 203b in the form of a bayonet, are such that when the tab 116 is inserted into the window 403 of the wing 103a, 103b, at least the end of said longitudinal coplanar extension 203a, 203b is positioned within said receiving seat 306.

[0072] Thanks to the bayonet ends 203a, 203b, which insert into the respective seats 306, the coupling occurs between the metal U-bolt 3 and the terminals, viz., the hook anchor arms 6 made of polymeric material, e.g., plastic material with or without glass fibre reinforcement. This coupling is made more stable by the tab 116 and by seat 316 engaging the edge of the window 403 provided on each wing 103a, 103b.

[0073] The hook anchor arm 6 is provided with a radial stiffening rib 506 positioned on the surface of the hook anchor arm 6 opposite to that on which the receiving seat 306 is positioned.

[0074] The presence of the radial stiffening rib 506, which may have different extensions and thicknesses, makes it possible to vary the stiffness of the arm 6 made of polymeric material so that it can be adapted both to the length of the U-bolt 3, and thus to the weight of the number of cables C and / or saddles 2 supported, and to the type of support S to which the cable clamp device 1 is hooked.

[0075] Furthermore, to make the hooking of the device 1 to the support S more stable, the hook end 206 of each hook anchor arm 6 has a knurled engagement surface 216.

[0076] Obviously, it is possible to provide an engagement surface to the support which is not knurled but for example arched or with another shape so that it can adapt to the profile of the support S.

[0077] Figures 9 to 12b show, in section, the portion of the U-bolt 3 where the coupling with the hook anchor arms 6 is achieved (area indicated with the dotted line A in figure 2).

[0078] In particular, figures 9 and 11 show a wing 103b and the corresponding longitudinal coplanar extension 203b inserted into the receiving seat 306 in the form of a pocket provided at the end of the arm 6 opposite the end where the tab 116 is present.

[0079] Figure 10 shows the end of the longitudinal coplanar extension 203b inserted into the pocket 306 provided on the arm 6.

[0080] Figures 12a and 12b show, respectively, the tab 116 of the fin 106 of the arm 6 inserted in the window 403 of the wing 103a, 103b and subsequently hooked to the perimeter edge 413 of the window 403 itself.

[0081] In fact, the presence of the tab 116 makes the coupling of the U-bolt 3 with the hook anchor arms 6 more stable.

[0082] The assembly of each of the two arms 6 on the wings of the U-bolt 3 occurs according to the following steps:

[0083] - the hook anchor arm 6 is flanked by the outer surface of the corresponding wing 103a, 103b of the U-bolt 3, so that the longitudinal coplanar bayonet extension 203a, 203b fits into the receiving pocket provided on the arm,

[0084] - the fastening plate 406 is positioned abutting against the outer surface of the wing 103a, 103b so that the tab 116 provided on the flexible fin 106 is at the window 403,

[0085] - the tab 1 16 is inserted in the window 403 (figure 12a) and then the hook anchor arm 6 is slightly shifted longitudinally in the direction away from the connection plate 203 of the U-bolt 3 so as to allow the perimeter edge 413 of the window 403 to be inserted within the accommodation seat 136 formed by the tab 116 and by its folded end 126 (figure 12b).

[0086] Advantageously, said tab 116 and said accommodation seat 306 in the form of a pocket are provided at the longitudinally opposite ends of said hook anchor arm 6.

[0087] Furthermore, it is possible to provide that for each hook anchor arm 6, the plate 406 with a tab 116 is inclined with respect to the receiving seat 306, provided at the opposite end of the arm 6, in the direction approaching the outer surface of the wings 103a, 103b or that said arm 6 is arched in a longitudinal direction, so as to favour the engagement of the perimeter edge 413 of the window 403 in the accommodation seat 136 when said longitudinal coplanar extension 203a, 203b in the form of a bayonet fits in the corresponding receiving seat 306 provided on each hook anchor arm 6.

[0088] In fact, once the tab 1 16 is inserted in the window 403 and hooked to the edge 413 due to the intrinsic elasticity of the material with which the hook anchor arm 6 is made, the arm itself 6 abutting against the metal wing 103a, 103b tends to straighten, making the engagement of the edge 413 in the corresponding seat 136 even more stable.

[0089] Figures 13a, 13b and 14 show a half- saddle 102b, in particular the lower half-saddle, which when coupled with a second half-saddle 102a placed above, forms the saddle 2 for housing the cables C provided for in combination with the device 1 object of the present invention.

[0090] The device 1 object of the present invention is provided in combination with one or more saddles 2 for housing cables C, stackable between the wings 103a, 103b of the U-bolt 3 and the support element S, where at least one saddle 2 has half-saddles 102a, 102b provided, on the surface facing the wings 103a, 103b of a sliding seat 202 of the tab 116 of the fastening plate 406 of each hook anchor arm 6, which tab 116 is protruding (figure 14) beyond the inner surface of said wings 103a, 103b when said hook anchor arms 6 are coupled to the wings 103a, 103b of said U-bolt 3.

[0091] Thanks to the sliding seat 202, the half-saddles 102a, 102b and thus the saddles 2 can slide longitudinally, pushed by the combination of the screw 5 and thrust-bearing plate 4 or directly by the tip of the locking screw 5, along the wings 103a, 103b towards the support S so as to be able to be stably stacked in the U-bolt 3 when the device 1 is in operating condition. Figures 15-17b illustrate a further embodiment of the present invention. The device 1 is hooked to a support S or an L-shaped metal profile.

[0092] As can be seen in figure 15, the saddles 2, each consisting of a pair of half- saddles 102a, 102b forming the housing for the cables C not illustrated, are stacked between the thrust-bearing plate 4, the inner surface of the pair of wings 103a and 103b of the U-bolt 3 and an L- shaped flat surface of the profile, when said device is hooked by means of the hook anchor arms 6 to said L-shaped profile.

[0093] Figures 16 and 17a and 17b show the hook anchor arms made of polymeric material and which can be coupled to the U-bolt 3 and the bracket S made of metal.

[0094] In the illustrated embodiment, the longitudinal coplanar extensions 203a and 203b are positioned at the corner of the lower edge or edge of each free end of the wings 103a, 103b, opposite the end thereof connected to the plate 203, in which the threaded through-hole 303 for the locking screw 5 is present.

[0095] For this embodiment, the thrust-bearing plate 4 on which the tip of the locking screw 5 acts is illustrated, but it is of course possible to envisage that the tip of the screw acts directly on the surface of the saddles 2, without the presence of the plate 4, to allow, thanks to the U-bolt 3 and the hook anchor arms 6, a secure and stable positioning of the cables C on the support S.

[0096] In Figure 17a, the radial stiffening rib 506 can be seen, which extends throughout the longitudinal extension of the arm 6 and also in the hook end 206.

[0097] Figures 18-22 illustrate a further embodiment of the present invention.

[0098] The device 1 is hooked to a support S or a slotted U-shaped metal profile.

[0099] As can be seen in figure 20, the longitudinal coplanar extensions 203a, 203b in the form of a bayonet are not positioned at a corner of the edge of the free end of the wing 103a or 103b of the U-bolt 3, but are positioned near the longitudinal centreline M. Furthermore, they have a shorter length with respect to the extensions 203a, 203b of the previous embodiments.

[0100] As a result, the hook arms 6 also have a reduced extension, and this allows the device 1 to be positioned on a U-shaped profile with the ends folded inwards like the one illustrated.

[0101] In order to facilitate the insertion of the hook arms 6, in particular of the hook end 206 into the groove of the U-shaped profile S, the arm has a chamfered edge 606 near or at the pocket 306.

[0102] The radial rib 506 follows the profile of the arm 6 from the fin 106 to the hook end 206.

[0103] Figure 22 illustrates the device 1 of figure 15 hooked to pipe support S.

[0104] The hook end 206 of the hook anchor arms 6 of the described and illustrated embodiments shows a knurled surface 216 which makes the engagement of the hook on the surfaces of the supports S more secure. Said engagement surface 216 may not be knurled but may, for example, provide an arcuate trough (not illustrated) which facilitates the engagement of the hook 206 on supports S with a circular or oval section. Thanks to the fact that the device 1 which is the subject matter of the present invention is formed by a U-bolt 3 and two terminal pieces (hook anchor arms 6) removably coupled to said U-bolt 3 and that said terminal pieces are made of easily mouldable plastic material, the cable clamp device 1 is easily adaptable to any type of support S by simply replacing the hook anchor arms 6 which may have different extensions and shapes of the hook 206.

[0105] Furthermore, it is possible to have hook anchor arms 6 having different stiffnesses by varying the position and shape of the stiffening rib 506.

[0106] The cable clamp device 1 allows the quick and safe installation of cables (coaxial cables, feeder cables, fibre optic and energy cables) or pipes on any type of metal structure, avoiding the direct connection between the metal support and the U-bolt, also made of metal 3, on which the cables are arranged C, significantly reducing or eliminating the negative impact of the passive intermodulation phenomenon, or PIM.

Claims

CLAIMS1) Device (1) for fastening cables (C), to a support element (S), such as a plate, a tubular support, a U-shaped profile, which device (1) comprises a metal U-bolt having a U-shaped cross section (3) with two opposite wings (103a, 103b) interconnected at one end thereof by a plate (203) positioned orthogonally between said wings (103a, 103b), between which wings (103a, 103b) one or more cables (C) or one or more saddles (2) for housing said cables (C) may be stacked characterised in that each free end of said wings (103a, 103b), opposite to the connection end with said plate (203), is coupled to a hook anchor arm (6) which hook anchor arm (6) extends longitudinally and at least partially beyond the free end of said wings (103a, 103b) and terminates by folding itself to form a hook end (206) which hook end (206) is intended to hook said support (S) on which said device (1) is intended to be hooked, each of said two hook anchor arms (6) being made of a polymeric material.2) Device (1) according to claim 1 characterised in that from the edge of each free end of said wings (103a, 103b) a longitudinal coplanar extension (203a, 203b) in the form of a bayonet branches off, which fits in a corresponding receiving seat (306) provided on each hook anchor arm (6) to enable coupling said hook anchor arms (6) to said wings (103a, 103b).3) Device (1 ) according to claim 1 or 2 characterised in that at the edge of each free end of said wings (103a, 103b) a window (403) is provided for inserting engagement means provided on each hook anchor arm (6) to enable coupling said hook anchor arms (6) to said wings (103a, 103b).4) Device (1) according to one or more of the preceding claims, characterised in that each hook anchor arm (6) is equipped, at the end opposite to said hook (206), with a fastening plate (406) intended to be positioned in abutment against the outer surface of said wings (103a, 103b), said fastening plate (406) being equipped with means for engagingsaid hook anchor arms (6) on said wings (103a, 103b) of said U-bolt (3).5) Device (1) according to claim 4 characterised in that said engagement means comprise a flexible fin (106) in a corresponding seat (416) provided on said fastening plate (406), which flexible fin (106) terminates, at the opposite end constrained to the seat (416) of said plate (406), with a radially protruding tab (116) which folds to form a hooking end (126) delimiting an accommodation seat (136) of the perimeter edge (413) of a window (403) provided at the edge of each free end of said wings (103a, 103b).6) Device (1 ) according to one or more of the preceding claims 3 to 5, characterised in that said window (403) is rectangular and positioned orthogonal to the median longitudinal line (M) of each wing (103a, 103b).7) Device (1) according to one or more of the preceding claims characterised in that said receiving seat (306) is provided on the same surface of the hook anchor arm (6) from which the hooking tab (116) protrudes.8) Device (1 ) according to one or more of the preceding claims 2 to7 characterised in that said receiving seat (306) is provided at the hook end (206) of said hook anchor arm (6) and the extensions of said hook anchor arm (6) and of said coplanar longitudinal extension (203a, 203b) in the form of a bayonet are such that when the tab (116) is inserted into the window (403) of the wing (103a, 103b), at least the end of said coplanar longitudinal extension (203a, 203b) is positioned within said receiving seat (306).9) Device (1 ) according to one or more of the preceding claims 2 to8 characterised in that said receiving seat (306) is in the form of a pocket provided near the hook end (206).10) Device (1) according to one or more of the preceding claims 5 to 9 characterised in that said radially protruding tab (1 16) and said receiving seat (306) in the form of a pocket are provided at the longitudinally opposite ends of said hook anchor arm (6).11) Device (1) according to claim 10 characterised in that the fastening plate (406) with the radially protruding tab (116) is inclined relative to the receiving seat (306) in the direction of movement closer to the outer surface of the wings (103a, 103b) so as to ease the engagement of the perimeter edge (413) of the window (403) in the accommodation seat (136) when said a longitudinal coplanar extension (203a, 203b) in the form of a bayonet fits in the corresponding receiving seat (306) provided on each hook anchor arm (6).12) Device (1 ) according to one or more of the preceding claims characterised in that said hook anchor arm (6) is equipped with a radial stiffening rib (506) which radial stiffening rib (506) is positioned on the surface of the hook arm (6) opposite to the surface on which the receiving seat (306) is positioned.13) Device (1 ) according to one or more of the preceding claims characterised in that the hook end (206) of each hook anchor arm (6) has a knurled surface (216) engaging on the support element (S).14) Device (1 ) according to one or more of the preceding claims characterised in that it is provided in combination with one or more saddles (2) for housing cables (C), which may be stacked between the wings (103a, 103b) of the U-bolt (3) and the support element (S), each saddle (2) being composed of two half-saddles (102a, 102b) mutually coupled for forming the respective housing seats (302) of the cables (C) to be supported, which half-saddles (102a, 102b) are equipped on the surface facing said wings (103a, 103b) with a sliding seat (202) of the radially protruding tab (116) provided on the fastening plate (406) of each hook anchor arm (6), which tab (316) protrudes from the inner surface of said wings (103a, 103b) when said hook anchor arms (6) are coupled to the wings (103a, 103b) of said U-bolt (3).15) Device (1 ) according to one or more of the preceding claims characterised in that said connection plate (203) positioned orthogonally between said wings (103a, 103b) is equipped with a threaded through-hole (303) for the insertion of a locking screw (5) which locking screw (5) is intended to tighten, between its tip and a support element (S), one or more U-bolts (2) for housing cables (C), which may be stacked between the wings (103a, 103b) of the U-bolt (3). 16) Device (1 ) according to one or more of the preceding claims, characterised in that it is provided in combination with a thrust-bearing plate (4) and a locking screw (5) which may be screwed into a threaded throughhole (303) provided on the connection plate (203) positioned orthogonally between said wings (103a, 103b), said thrust-bearing plate (4) being constrained to said wings (103a, 103b) and longitudinally movable along said wings (103a, 103b), and said plate (4) being adapted to be positioned against one or more cables (C) or one or more saddles (2) for housing said cables (C) by the action of the force exerted by the tip of said locking screw (5) on the upper surface of said thrust-bearing plate

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