CN216487425U

CN216487425U - Tram electronic cabinet signal shielding cable

Info

Publication number: CN216487425U
Application number: CN202123153325.8U
Authority: CN
Inventors: 张文聪
Original assignee: Shanghai Alstom Communications Electric Co ltd
Current assignee: Shanghai Alstom Communications Electric Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-10
Anticipated expiration: 2031-12-15

Abstract

The utility model belongs to the technical field of the technique of shielding cable and specifically relates to a tram electronic cabinet signal shielding cable is related to, it includes electrically conductive heart yearn, lays at the shielding layer in the electrically conductive heart yearn outside and presss from both sides the inside enhancement subassembly of establishing at the shielding layer, electrically conductive heart yearn is including arranging a plurality of stranded wires together, it is including setting up a plurality of reinforcement pieces in the stranded wire outside to strengthen the subassembly, reinforcement piece length is the same with electrically conductive heart yearn length, and the reinforcement piece presss from both sides and establishes in the stranded wire outside, can strengthen the holistic intensity of electrically conductive heart yearn, when buckling to the cable in the use, has reduced external factor and has leaded to the cracked possibility of cable, has prolonged the life of cable, can not influence the effect of cable to signal shielding simultaneously. This application has the effect that improves shielding cable intensity.

Description

Tram electronic cabinet signal shielding cable

Technical Field

The application relates to the technical field of shielding cables, in particular to a tram electronic cabinet signal shielding cable.

Background

The shielding cable is a special cable which reduces electromagnetic interference by shielding insulation around the cable, the shielding cable can enable external electromagnetic radiation and magnetic field radiation to be directly connected to the ground without generating interference on an inner layer wire, a shielding layer of the shielding cable is generally grounded to play a good shielding role, and an external electromagnetic field with high frequency can generate eddy current and be lost when passing through the shielding layer.

The conductive core wires in the shielded cable in the prior art are packaged by the filling body and the outer skin, so that the conductive core wires are poor in connection stability, and are easy to scatter when being extruded, and normal use is affected.

SUMMERY OF THE UTILITY MODEL

In order to strengthen the intensity of shielding cable, this application provides a tram electronic cabinet signal shielding cable.

The application provides a tram electronic cabinet signal shielding cable adopts following technical scheme:

the utility model provides a tram electronic cabinet signal shielding cable, includes electrically conductive heart yearn, lays the shielding layer in the electrically conductive heart yearn outside and presss from both sides the reinforcing component of establishing in the inside shielding layer, electrically conductive heart yearn is including a plurality of stranded wires of arranging together, reinforcing component is including setting up a plurality of enhancement pieces in the stranded wire outside, it is the same with electrically conductive heart yearn length to strengthen piece length.

Through adopting above-mentioned technical scheme, strengthen the piece clamp and establish in the stranded conductor outside, can strengthen the holistic intensity of electrically conductive heart yearn, when buckling the cable in the use, reduced external factor and leaded to the cracked possibility of cable, prolonged the life of cable, can not influence the effect of cable to signal shielding simultaneously.

Optionally, the conductive core wire further includes an insulating layer disposed outside the stranded wire.

Through adopting above-mentioned technical scheme, the insulating layer can make electrically conductive heart yearn and external environment keep apart to can guarantee certain electric withstand voltage intensity, provide good operational environment for the normal operation of electrically conductive heart yearn.

Optionally, the twisted wires are separated from each other by the reinforcing pieces, one sides of the reinforcing pieces are fixedly connected together, and the reinforcing pieces can be bent along with the conductive core wires.

Through adopting above-mentioned technical scheme, one side fixed connection of a plurality of enhancement pieces is in the same place, makes the enhancement piece can not produce the phenomenon of dislocation that slides in the cable, strengthens the piece and can not only play the effect of strengthening the intensity when the cable uses, can also be convenient for distinguish different stranded conductor, the installation and the maintenance of the twisted conductor of being convenient for.

Optionally, the end portions of the reinforcing pieces are provided with blocking pieces, and the outer surfaces of the blocking pieces are attached to the inner surface of the shielding layer.

Through adopting above-mentioned technical scheme, separation blade and the laminating of shielding layer inner surface can not have the edges and corners to cause the wearing and tearing to the shielding layer because of strengthening the piece, have protected the structure of shielding layer, have further improved the inside intensity of shielding layer simultaneously.

Optionally, the reinforcing assembly further comprises a filler disposed in a gap between the shielding layer and the conductive core.

Through adopting above-mentioned technical scheme, being provided with of filler helps helping the cable to maintain original shape to bump between electrically conductive heart yearn and the reinforcing piece has been reduced.

Optionally, the shielding layer includes magnetic field shielding layer and electromagnetic shield layer, the electromagnetic shield layer sets up in the magnetic field shielding layer outside, the magnetic field shielding layer sets up to the metal mesh and weaves the layer, the electromagnetic shield layer sets up to the aluminium foil layer.

Through adopting above-mentioned technical scheme, the metal mesh weaves layer and aluminium foil layer and is used for preventing magnetic field radiation and electromagnetic radiation respectively, can play the shielding action of full aspect, because the metal mesh weaves the layer and has fine toughness, difficult rupture, consequently its drainage line that just can regard as the aluminium foil layer itself, in case the aluminium foil layer fracture, the metal mesh weaves the layer and will play the effect of continuing to connect the aluminium foil layer, guarantees the normal use of shielded cable.

Optionally, a shockproof layer is arranged outside the shielding layer, and the shockproof layer is a rubber layer.

Through adopting above-mentioned technical scheme, when the cable received external pressure, the layer of taking precautions against earthquakes can play the cushioning effect to the atress of cable, has protected inside electrically conductive heart yearn.

Optionally, an anti-corrosion coating layer is coated outside the anti-vibration layer.

By adopting the technical scheme, the anticorrosive paint can effectively reduce abrasion and corrosion caused by external conditions to the cable, prolong the service life of the cable, increase the use occasions of the cable and improve the applicability of the cable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the reinforcing sheet is clamped at the outer side of the stranded wire, so that the integral strength of the conductive core wire can be enhanced, when the cable is bent in the using process, the possibility of cable fracture caused by external factors is reduced, the service life of the cable is prolonged, and meanwhile, the signal shielding effect of the cable is not influenced;

2. one sides of the reinforcing pieces are fixedly connected together, so that the reinforcing pieces cannot slide and dislocate in the cable, the reinforcing pieces can play a role in reinforcing strength when the cable is used, different stranded wires can be distinguished conveniently, and the installation and maintenance of the stranded wires are facilitated;

3. the metal mesh weaves layer and aluminium foil layer and is used for preventing magnetic field radiation and electromagnetic radiation respectively, can play the shielding action of full aspect, because the metal mesh weaves the layer and has fine toughness, difficult rupture, consequently its drainage line that just can regard as the aluminium foil layer itself, in case the aluminium foil layer fracture, the metal mesh weaves the layer and will play the effect of continuing to connect the aluminium foil layer, guarantees the normal use of shielding cable.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Description of reference numerals: 1. a conductive core wire; 11. stranding; 12. an insulating layer; 2. a shielding layer; 21. a magnetic field shielding layer; 22. an electromagnetic shielding layer; 3. a reinforcement assembly; 31. a reinforcing sheet; 32. a baffle plate; 33. a filler; 4. and (5) a shockproof layer.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses tram electronic cabinet signal shielding cable. Referring to fig. 1, it includes electrically conductive heart yearn 1, shielding layer 2 and enhancement subassembly 3, electrically conductive heart yearn 1 is including a plurality of stranded conductors 11 that parallel arranged, shielding layer 2 is laid in electrically conductive heart yearn 1 outside, can wrap up stranded conductor 11 completely, it is located between shielding layer 2 and the stranded conductor 11 to strengthen subassembly 3, it includes a plurality of enhancement pieces 31 of arranging along electrically conductive heart yearn 1 axial, the width of strengthening piece 31 is less than 2 cross section inner wall diameters of shielding layer, length is the same with the length of electrically conductive heart yearn 1, the setting of strengthening piece 31 is when not influencing the normal work of shielding layer 2, the anti intensity of buckling in the shielding layer 2 has been strengthened.

Referring to fig. 1, the stranded wire 11 is formed by winding two single wires, four stranded wires 11 are arranged in the shielding layer 2, the conductive core wire 1 further comprises an insulating layer 12, and the insulating layer 12 covers the outer side of the stranded wire 11 and is arranged as a polyvinyl chloride layer; the insulating layer 12 can separate the strands 11 in pairs, and reduces mutual interference between the strands 11.

Referring to fig. 1, the shielding layer 2 includes a magnetic field shielding layer 21 and an electromagnetic shielding layer 22, the magnetic field shielding layer 21 is located inside the electromagnetic shielding layer 22, the magnetic field shielding layer 21 is a metal mesh woven layer, the metal mesh woven layer is woven by a plurality of copper wires according to a certain arrangement sequence, so that the magnetic field shielding layer can effectively shield external magnetic field interference, has good flexibility, and is not easy to break in normal use; electromagnetic shield layer 22 sets up to the aluminium foil layer of parcel outside magnetic field shielding layer 21, and it laminates with magnetic field shielding layer 21 surface, makes shielding layer 2 have the two aspect signal shielding of magnetic field and electromagnetism, has improved shielding layer 2's shielding effect, and when having the cracked condition of one side to appear between metal mesh knitter or aluminium foil layer, the other side can play the drainage effect, can not influence shielding layer 2's normal use.

Referring to fig. 1, four reinforcing pieces 31 are provided, one side of each reinforcing piece 31 is fixedly connected to the same axis and is radial after connection, adjacent stranded wires 11 can be separated, the reinforcing assembly 3 further comprises a blocking piece 32 and a filler 33, the blocking piece 32 is arranged at one end, far away from the connection position, of each reinforcing piece 31 and is arc-shaped, the outer side of each blocking piece is attached to the inner surface of the magnetic field shielding layer 21, the blocking piece 32 can reduce abrasion of the reinforcing assembly 3 on the magnetic field shielding layer 21, the service life of the shielding layer 2 is prolonged, and the reinforcing pieces 31 and the blocking pieces 32 are flexible plastic sheets, so that the weight is light and the cost is low; the filler 33 is positioned in the shielding layer 2 and filled in the gap between the conductive core wire 1 and the reinforcing sheet 31, the filler 33 is set to be a glass fiber rope, the glass fiber rope is non-conductive and does not absorb moisture, the flame retardant property is good, the friction between the conductive core wire 1 and the reinforcing sheet 31 can be reduced, and the safety of the cable is improved.

Referring to fig. 1, the outer side of the shielding layer 2 is provided with the shockproof layer 4, the inner surface of the shockproof layer 4 is attached to the outer surface of the shielding layer 2, and the shockproof layer 4 is arranged as a rubber layer, so that when the cable is subjected to external pressure or is bent, the shockproof layer 4 can protect the internal structure, buffer the pressure applied to the cable, and improve the stability of the cable; the outer layer of the shockproof layer 4 is coated with an anti-corrosion coating layer, and the anti-corrosion coating layer is arranged to be evenly coated with epoxy coating on the surface of the shockproof layer 4, so that the shockproof cable can resist acid and alkali, the corrosion phenomenon on the surface layer of the cable is reduced, and the service life of the cable is prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a tram electronic cabinet signal shielding cable which characterized in that: including electrically conductive heart yearn (1), lay shielding layer (2) in electrically conductive heart yearn (1) outside and press from both sides and establish reinforcing component (3) inside shielding layer (2), electrically conductive heart yearn (1) is including arranging a plurality of stranded conductor (11) together, reinforcing component (3) is including setting up a plurality of enhancement pieces (31) in stranded conductor (11) outside, it is the same with electrically conductive heart yearn (1) length to strengthen piece (31).

2. The tram electronic cabinet signal shielding cable of claim 1, wherein: the conductive core wire (1) further comprises an insulating layer (12) arranged on the outer side of the stranded wire (11).

3. The tram electronic cabinet signal shielding cable of claim 1, wherein: the twisted wires (11) are separated from each other by the reinforcing pieces (31), one sides of the reinforcing pieces (31) are fixedly connected together, and the reinforcing pieces (31) can be bent along with the conductive core wire (1).

4. The tram electronic cabinet signal shielding cable of claim 3, wherein: the end part of the reinforcing sheet (31) is provided with a baffle sheet (32), and the outer surface of the baffle sheet (32) is attached to the inner surface of the shielding layer (2).

5. The tram electronic cabinet signal shielding cable of claim 1, wherein: the reinforcing component (3) further comprises a filler (33), and the filler (33) is arranged in a gap between the shielding layer (2) and the conductive core wire (1).

6. The tram electronic cabinet signal shielding cable of claim 1, wherein: shielding layer (2) are including magnetic field shielding layer (21) and electromagnetic shield layer (22), electromagnetic shield layer (22) set up in magnetic field shielding layer (21) outside, magnetic field shielding layer (21) set up to the metal mesh and weave the layer, electromagnetic shield layer (22) set up to the aluminium foil layer.

7. The tram electronic cabinet signal shielding cable of claim 1, wherein: and a shockproof layer (4) is arranged outside the shielding layer (2), and the shockproof layer (4) is arranged as a rubber layer.

8. The tram electronic cabinet signal shielding cable of claim 7, wherein: and an anti-corrosion coating layer is coated outside the anti-vibration layer (4).