Cable for bridging traffic vehicles

Abstract

The utility model discloses a cable for bridging traffic vehicles, and relates to the technical field of cables. The cable comprises an outermost sheath layer, the sheath layer is internally provided with a braided reinforcing layer, the braided reinforcing layer is internally provided with a flame-retardant belt, the flame-retardant belt is internally provided with an aramid fiber reinforcing core, the outer side of the aramid fiber reinforcing core is provided with a plurality of groups of conductors, and the aramid fiber reinforcing core is wrapped by the plurality of groups of conductors. Insulating layers are arranged on the outer sides of the conductors respectively, isolating layers are arranged on the outer sides of the insulating layers, and braid layers are arranged on the outer sides of the isolating layers. The cable for bridging the traffic vehicle can keep stable performance in a severe environment, is excellent in flame retardant property, good in weather resistance and capable of resisting erosion of an external environment, prolongs the service life of the cable, and meanwhile, due to the structural design of the materials, the cable is small in outer diameter, small in size and low in transportation cost, and meets the use requirements of existing rail traffic vehicles.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a kind of cable for traffic vehicle cross connection. BACKGROUND

[0002] Crossing cable is located in the narrow connecting part before two carriages, in the process of vehicle operation, complex stress and special working condition, such as severe environment, bending radius is too small, impact rate is too large, etc., have significant influence on crossing cable.Long-term complex stress and motion are the main reason affecting the service life of crossing cable.The safety and reliability of crossing cable design are very important for the operation safety of train.

[0003] In recent years, crossing cable market is basically occupied by foreign products, not only long delivery cycle, and expensive, high logistics transportation cost, most importantly, cable outer diameter is large, volume is large, the material used by cable is halogen element containing harmful to human body, although there is great advantage from softness, flame retardancy, but from lightweight, smaller outer diameter, low smoke halogen-free flame-retardant, high light transmittance new requirement, cannot meet the use requirement of current rail transit vehicle, in view of the deficiency of prior art, the utility model provides a kind of cable for traffic vehicle cross connection to solve the above problems. SUMMARY

[0004] In view of the deficiency of prior art, the utility model provides a kind of cable for traffic vehicle cross connection, cable outside and center are respectively provided with braided reinforcing layer and aramid reinforcing core, adopt aramid material to provide firm support and excellent mechanical strength for cable, enhance the tensile and wear resistance of cable, make cable also can keep stable performance under severe environment, sheath layer adopts low smoke halogen-free flame-retardant irradiation crosslinking polyolefin material, not only excellent flame-retardant performance, and good weather resistance, can resist the erosion of external environment, prolong the service life of cable, simultaneously, the structure design of material makes that the outer diameter of cable is small, volume is small, transportation cost is low, meet the use requirement of current rail transit vehicle.

[0005] To achieve the above object, the utility model realizes through following technical scheme: a kind of cable for traffic vehicle cross connection, including the sheath layer of outermost layer, the inside of the sheath layer is provided with braided reinforcing layer, the inside of the braided reinforcing layer is provided with flame-retardant band, the inside of the flame-retardant band is provided with aramid reinforcing core;

[0006] The outside of the aramid reinforcing core is provided with multiple groups of conductors, and multiple groups of the conductors are wrapped around the aramid reinforcing core, and the outside of multiple groups of the conductors is respectively provided with an insulating layer, the outside of the insulating layer is provided with a separation layer, and the outside of the separation layer is provided with a braided layer.

[0007] The conductor, the insulating layer and the separation layer form a wire core whole, and the wire core whole is located between the aramid reinforcing core and the flame-retardant band.

[0008] Preferably, the surface of the braided layer is provided with tinned copper wire.

[0009] Preferably, the flame-retardant tape adopts low-smoke halogen-free flame-retardant radiation crosslinking polyolefin material.

[0010] Preferably, the braided reinforcing layer is made of aramid material.

[0011] Preferably, the sheath layer adopts low-smoke halogen-free flame-retardant radiation crosslinking polyolefin material.

[0012] Preferably, the conductor adopts built-in tensile steel wire design.

[0013] Preferably, the conductor, the insulating layer and the isolation layer are in a whole concentric and same direction structure, and talc is filled between the conductor, the insulating layer and the isolation layer.

[0014] The utility model discloses a kind of traffic vehicle cable for bridging, which has the beneficial effects as follows:

[0015] The traffic vehicle cable for bridging, the braided reinforcing layer and aramid reinforcing core are respectively arranged outside and in the center of the cable, the aramid material provides firm support and excellent mechanical strength for the cable, enhances the tensile and wear resistance of the cable, so that the cable can maintain stable performance in harsh environment, the sheath layer adopts low-smoke halogen-free flame-retardant radiation crosslinking polyolefin material, not only excellent flame-retardant performance, but also good weather resistance, can resist the erosion of external environment, prolong the service life of the cable, at the same time, the structure design of material makes the outer diameter of the cable small, small in size, low in transportation cost, meets the use requirement of current rail transit vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] In the figure: 1, aramid reinforcing core; 2, conductor; 3, insulating layer; 4, isolation layer; 5, braided layer; 6, flame-retardant tape; 7, braided reinforcing layer; 8, sheath layer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] The cable for connecting traffic vehicles provided by the embodiments of the present application solves the problem that the connecting cable market is basically occupied by foreign products in recent years, which has long delivery cycle, high price, high logistics transportation cost, and most importantly, large outer diameter and volume, and the material of the cable contains halogen elements harmful to human body, which cannot meet the use requirements of the current rail transit vehicles under the new requirements of lightweight, smaller outer diameter, low smoke halogen-free flame retardant, and high light transmittance.

[0021] In order to better understand the above technical scheme, the above technical scheme will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0022] The utility model discloses a kind of cables for connecting traffic vehicles, according to the attached Figure 1 As shown in the figure, including the outermost sheath layer 8, the inside of sheath layer 8 is provided with braided reinforcing layer 7, braided reinforcing layer 7 is located in the inside of sheath layer 8, made of aramid material;Aramid material has high strength, high modulus and good wear resistance, which provides additional mechanical strength for the cable, enhances the tensile and wear resistance of the cable;

[0023] The inside of braided reinforcing layer 7 is provided with flame-retardant tape 6, the inside of flame-retardant tape 6 is provided with aramid reinforcing core 1;Flame-retardant tape 6 is located in the inside of braided reinforcing layer 7, adopts low smoke halogen-free flame-retardant irradiation crosslinking polyolefin material;Flame-retardant tape 6 improves the flame-retardant performance of the cable, ensures that the spread of fire can be effectively prevented when fire occurs;

[0024] Sheath layer 8 as the outermost layer of cable, sheath layer 8 plays a role in protecting the internal structure of cable from external environment damage;Sheath layer 8 adopts low smoke halogen-free flame-retardant irradiation crosslinking polyolefin material, which has excellent flame-retardant performance, and the amount of smoke produced during combustion is low, and does not contain halogen and other harmful substances, which is friendly to the environment.

[0025] The outside of aramid reinforcing core 1 is provided with a plurality of conductors 2, and the conductor 2 is the main part of the cable for transmitting current. The plurality of conductors 2 wrap the aramid reinforcing core 1, and the outside of the plurality of conductors 2 is respectively provided with an insulation layer 3. The outside of the insulation layer 3 is provided with a separation layer 4, and the outside of the separation layer 4 is provided with a braided layer 5.

[0026] The aramid reinforcing core 1 is located at the center of the cable and is the main support structure of the cable. The aramid reinforcing core 1 is made of aramid fiber and has extremely high strength and modulus. At the same time, it has a small volume and can withstand a large tensile force and pressure, ensuring the stability and reliability of the cable during long-term use.

[0027] The conductor 2 adopts an internal anti-tension steel wire design to improve the overall tensile and anti-swing performance of the cable, and at the same time, the tensile performance of the conductor 2 is enhanced, so that the cable is not easily damaged when subjected to external forces. The overall core composed of the conductor 2, the insulation layer 3 and the isolation layer 4 adopts a concentric and same direction structure, which further reduces the volume of the cable. The overall core composed of the conductor 2, the insulation layer 3 and the isolation layer 4 is filled with talcum powder, which reduces the internal stress of the cable during bending, making the cable more flexible and resistant to bending, and improving the service life of the cable under long-term swinging conditions. The talcum powder filling between the overall core further reduces the internal friction of the cable and improves the flexibility and durability of the cable.

[0028] The insulation layer 3 is located outside the conductor 2 and serves to isolate the current between the conductors, preventing short circuits and electric shock accidents.

[0029] The isolation layer 4 is located outside the insulation layer 3, further enhancing the isolation effect between the conductors 2. The presence of the isolation layer 4 helps to reduce electromagnetic interference in the cable and improve the electrical performance of the cable.

[0030] The conductor 2, the insulation layer 3 and the isolation layer 4 form an overall core, which is located between the aramid reinforcing core 1 and the flame-retardant tape 6.

[0031] The surface of the braided layer 5 is provided with tinned copper wire; the tinned copper wire has good electrical conductivity and corrosion resistance, so that the braided layer 5 not only enhances the mechanical strength of the cable, but also improves the anti-interference ability and shielding performance of the cable.

[0032] In summary, the traffic vehicle jumper cable has the following advantages:

[0033] 1. High strength and durability:

[0034] The cable center is provided with an aramid reinforcing core 1, and the aramid material is known for its high strength, high modulus and good wear resistance, providing a solid support and excellent mechanical strength for the cable.

[0035] The braided reinforcing layer 7 also uses aramid material, further enhancing the tensile and wear resistance of the cable, so that the cable can maintain stable performance in harsh environments.

[0036] The sheath layer 8 adopts low-smoke halogen-free flame-retardant radiation cross-linked polyolefin material, which not only has excellent flame-retardant performance, but also has good weather resistance, can resist external environmental erosion, and prolongs the service life of the cable.

[0037] 2. Excellent electrical performance:

[0038] The conductor 2 adopts a built-in tensile steel wire design, which not only ensures the strength of the conductor, but also ensures the stable transmission of current.

[0039] The insulation layer 3 adopts high-quality plastic or rubber material, which has good insulation resistance and breakdown strength, and can effectively prevent current leakage and short circuit accidents.

[0040] The setting of the isolation layer 4 further enhances the isolation effect between the conductors, reduces electromagnetic interference, and improves the electrical performance of the cable.

[0041] 3. Softness and bending resistance:

[0042] The core composed of the conductor 2, the insulation layer 3 and the isolation layer 4 adopts a concentric and same direction structure, which makes the internal stress distribution of the cable more uniform when bending, reduces the bending stiffness of the cable, improves the softness and bending resistance of the cable, and reduces the volume of the cable.

[0043] Talcum powder is set between the cores to further reduce the internal friction of the cable, making the cable more smooth when bending and not easy to damage.

[0044] 4. Flame retardant and environmentally friendly:

[0045] The flame-retardant tape 6 and the sheath layer 8 both adopt low-smoke halogen-free flame-retardant radiation cross-linked polyolefin material, which produces low smoke when burning and does not contain harmful substances such as halogen, is friendly to the environment, and can effectively prevent the spread of fire, protecting the safety of personnel and property.

[0046] 5. Good shielding and anti-interference ability:

[0047] The braided layer 5 is woven by tinned copper wire, which not only enhances the mechanical strength of the cable, but also improves the anti-interference ability and shielding performance of the cable, which can effectively resist the interference of external electromagnetic field and ensure the stability and accuracy of signal transmission.

[0048] The above shows and describes the basic principles and main features of the present utility model and the advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements can be made to the present utility model, and these changes and improvements all fall within the scope of the claimed present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cable for the electrical connection of a vehicle, comprising an outermost sheath layer (8), characterized in that, The inside of the sheath layer (8) is provided with a braided reinforcing layer (7), the inside of the braided reinforcing layer (7) is provided with a flame-retardant tape (6), and the inside of the flame-retardant tape (6) is provided with an aramid reinforcing core (1); The outside of the aramid reinforcing core (1) is provided with a plurality of groups of conductors (2), the plurality of groups of conductors (2) wrap the aramid reinforcing core (1), the outside of each group of the plurality of groups of conductors (2) is provided with an insulating layer (3), the outside of the insulating layer (3) is provided with a separation layer (4), and the outside of the separation layer (4) is provided with a braided layer (5); The conductor (2), the insulating layer (3) and the separation layer (4) form a wire core whole, and the wire core whole is located between the aramid reinforcing core (1) and the flame-retardant tape (6).

2. The cable according to claim 1, wherein The surface of the braided layer (5) is provided with a tinned copper wire.

3. The cable according to claim 1, wherein The flame-retardant tape (6) is made of low-smoke halogen-free flame-retardant radiation cross-linked polyolefin material.

4. The cable according to claim 1, wherein The braided reinforcing layer (7) is made of aramid material.

5. The cable according to claim 3, wherein The sheath layer (8) is made of low-smoke halogen-free flame-retardant radiation cross-linked polyolefin material.

6. The cable according to claim 1, wherein The conductor (2) is designed with an embedded tensile steel wire.

7. The cable according to claim 1, wherein The wire core whole composed of the conductor (2), the insulating layer (3) and the separation layer (4) adopts a concentric and same direction structure, and talc is filled between the wire core whole composed of the conductor (2), the insulating layer (3) and the separation layer (4).

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