Active beacon cable

Abstract

The utility model specifically discloses an active beacon cable, and relates to the technical field of wires and cables, the active beacon cable comprises a plurality of strands of cables, a lining layer, a first shielding layer, a second shielding layer, an isolation layer, an armor layer and an outer sheath, and the plurality of strands of cables are twisted; the inner lining layer surrounds the peripheral side of the multi-strand cable so as to fix the multi-strand cable; the first shielding layer is arranged on the peripheral side of the lining layer and is formed by overlapping, covering and wrapping an aluminum-plastic composite belt; the second shielding layer is arranged on the peripheral side of the first shielding layer and is formed by weaving tinned copper wires, and the weaving rate of the tinned copper wires is more than 80%; the isolating layer is arranged on the peripheral side of the second shielding layer; the armor layer is arranged on the peripheral side of the isolating layer; according to the active beacon cable provided by the embodiment of the utility model, the anti-interference capability is strong, and the signal transmission capability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of wires and cables, in particular to an active beacon cable. Background Art

[0002] Active beacon cables are specialized cables used in rail transit systems, primarily for transmitting message data and enabling two-way communication between trains and the ground. These cables overcome the shortcomings of existing passive beacon technology, enabling the transmission of variable information and ensuring safe train operations. However, current active beacon cables are susceptible to interference during operation and exhibit poor signal transmission capabilities. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an active beacon cable with strong anti-interference ability and good signal transmission ability.

[0004] According to an embodiment of the present invention, an active beacon cable includes a cable, an inner lining layer, a first shielding layer, a second shielding layer, an isolation layer, an armor layer and an outer sheath. The cable is provided with multiple strands, and the multiple strands of the cable are twisted; the inner lining layer surrounds the outer periphery of the multiple strands of the cable to fix the multiple strands of the cable; the first shielding layer is arranged on the outer periphery of the inner lining layer, and is formed by overlapping and wrapping aluminum-plastic composite tapes; the second shielding layer is arranged on the outer periphery of the first shielding layer, and is woven by tinned copper wire, and the braiding rate of the tinned copper wire is above 80%; the isolation layer is arranged on the outer periphery of the second shielding layer; the armor layer is arranged on the outer periphery of the isolation layer; and the outer sheath is arranged on the outer periphery of the armor layer.

[0005] The active beacon cable according to the embodiments of the present invention has at least the following beneficial effects: the inner lining layer provides a good fixing effect, thereby stabilizing the signal transmission of the active beacon cable. Furthermore, the first shielding layer is formed by overlapping and wrapping aluminum-plastic composite tape, and the second shielding layer is braided from tinned copper wire, with the braiding ratio of the tinned copper wire exceeding 80%. Therefore, the provision of the first and second shielding layers enhances the anti-interference capability of the active beacon cable and improves its signal transmission capability.

[0006] According to an embodiment of the present invention, the inner lining layer is made of a halogen-free, low-smoke, flame-retardant polyolefin material, and the halogen-free, low-smoke, flame-retardant polyolefin material is filled in the gap formed by the first shielding layer and the inner lining layer through an extrusion process.

[0007] According to an embodiment of the present invention, the inner lining layer is made of polyvinyl chloride, and the polyvinyl chloride is filled in the gap formed by the first shielding layer and the inner lining layer through an extrusion process.

[0008] According to an embodiment of the present invention, the isolation layer is made of polyvinyl chloride or halogen-free low-smoke flame-retardant polyolefin material.

[0009] According to an embodiment of the present invention, the armor layer is woven from galvanized steel wires.

[0010] According to an embodiment of the present invention, the outer sheath is made of polyvinyl chloride or halogen-free low-smoke flame-retardant polyolefin material.

[0011] According to an embodiment of the present invention, the cable includes a conductor and an insulating layer, and the insulating layer is provided on the outer peripheral side of the conductor.

[0012] According to an embodiment of the present invention, the conductor is formed by twisting a plurality of tinned copper wires or a plurality of silver-plated copper wires.

[0013] According to an embodiment of the present invention, the insulating layer is made of foamed polyethylene.

[0014] According to an embodiment of the present invention, the insulating layer is made of high-density polyethylene.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 The figure is a schematic cross-sectional view of an active beacon cable according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] Active beacon cable 1000;

[0020] Cable 100; conductor 110; insulation layer 120;

[0021] Lining layer 200;

[0022] a first shielding layer 300;

[0023] A second shielding layer 400;

[0024] Isolation layer 500;

[0025] Armor layer 600;

[0026] Outer sheath 700. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by up, down, inside, outside, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Active beacon cables are specialized cables used in rail transit systems, primarily for transmitting message data and enabling two-way communication between trains and the ground. These cables overcome the shortcomings of existing passive beacon technology, enabling the transmission of variable information and ensuring safe train operations. However, current active beacon cables are susceptible to interference during operation and exhibit poor signal transmission capabilities.

[0032] To this end, the present invention proposes an active beacon cable 1000, specifically referring to the accompanying drawings of the specification. Figure 1 shown.

[0033] Reference Figure 1 As shown, an active beacon cable 1000 according to one embodiment of the present invention comprises a cable 100, an inner lining layer 200, a first shielding layer 300, a second shielding layer 400, an isolation layer 500, an armor layer 600, and an outer sheath 700. The cable 100 comprises multiple strands, which are twisted together. It is understood that this arrangement improves the anti-interference capability of the multi-strand cable 100, better protecting it from external electromagnetic interference, while also reducing signal loss.

[0034] Reference Figure 1As shown, it should be noted that cable 100 includes a conductor 110 and an insulation layer 120. In one embodiment, conductor 110 is formed by twisting together multiple tinned copper wires. Tinned copper wires are made by coating copper wires with a thin layer of tin. Tinned copper wires have excellent corrosion resistance and electrical conductivity. Furthermore, stranding is the process of bundling multiple wires together according to a specific rule. This process utilizes the rotational and linear motion of the wires to form a cable with a specific structure and performance.

[0035] It is understood that the above configuration enables conductor 110 to have excellent electrical and signal transmission performance, while also providing good flexibility, making active beacon cable 1000 flexible and convenient for use in various applications. In another embodiment, conductor 110 is formed by twisting together multiple silver-plated copper wires. Silver-plated copper wires are made by coating copper wires with a thin layer of metallic silver, which exhibits excellent corrosion resistance and electrical conductivity.

[0036] In one embodiment, the insulating layer 120 is made of expanded polyethylene. It should be noted that expanded polyethylene, also known as pearl cotton, is a material produced through a foaming process and exhibits excellent shock resistance and insulation properties. Furthermore, because its foaming structure creates more air gaps, it can effectively reduce signal leakage and interference, thereby improving the anti-interference capability and signal transmission capability of the active beacon cable 1000.

[0037] In another embodiment, the insulating layer 120 is made of high-density polyethylene (HDPE). It should be noted that HDPE is an opaque, white, waxy material that is soft and resilient, and exhibits excellent tensile strength, high-temperature distortion temperature, viscosity, and chemical stability. HDPE also exhibits excellent electrical and dielectric insulation properties. Its high dielectric strength allows it to withstand high voltages without breakdown, making it an ideal material for the insulating layer 120.

[0038] Reference Figure 1 As shown, it should be noted that the insulating layer 120 is provided on the outer periphery of the conductor 110, thereby separating the conductor 110 from other components and providing insulation. In one embodiment, foamed polyethylene is extruded around the outer periphery of the conductor 110 to form the insulating layer 120; in another embodiment, high-density polyethylene is extruded around the outer periphery of the conductor 110 to form the insulating layer 120.

[0039] Reference Figure 1As shown, in an active beacon cable 1000 according to an embodiment of the present invention, an inner lining layer 200 surrounds the outer periphery of the multi-strand cable 100 to fix the multi-strand cable 100. It can be understood that the inner lining layer 200 has a good fixing effect, thereby stabilizing the signal transmission of the active beacon cable 1000.

[0040] Continue to refer to Figure 1 As shown, it should be noted that the first shielding layer 300 is provided on the outer periphery of the inner lining layer 200 and is formed by overlapping and wrapping aluminum-plastic composite tape. It should be noted that aluminum-plastic composite tape is a composite material composed of aluminum foil and plastic film that can shield interference and increase the cable's extensibility and flexibility. Furthermore, overlapping wrapping refers to the continuous application of multiple layers of tape wrapping on the surface of an object, with a certain overlap between each layer. It is understood that through the above arrangement, the aluminum-plastic composite tape can fully cover the outer periphery of the inner lining layer 200, achieving a shielding ratio of 100%, thereby improving the anti-interference capability of the active beacon cable 1000.

[0041] Reference Figure 1 As shown, it should be noted that the second shielding layer 400 is provided on the outer periphery of the first shielding layer 300 and is braided from tinned copper wire. The braiding ratio of the tinned copper wire is above 80%. It should be noted that this arrangement provides the second shielding layer 400 with excellent corrosion resistance and forms a composite shielding structure with the first shielding layer 300, enhancing the shielding effectiveness and anti-interference capabilities of the active beacon cable 1000 while also providing a certain degree of protection.

[0042] In one embodiment, the inner lining layer 200 is made of a halogen-free, low-smoke, flame-retardant polyolefin material. The halogen-free, low-smoke, flame-retardant polyolefin material is filled in the gap formed by the first shielding layer 300 and the inner lining layer 200 through an extrusion process. It should be noted that the halogen-free, low-smoke, flame-retardant polyolefin material is a polymer material that is made of polyolefin as the main base material, by adding special halogen-free flame retardants, smoke suppressants and other additives, and processed through a special mixing process. This material has excellent flame retardant properties and low smoke characteristics. Therefore, through the above-mentioned setting, the inner lining layer 200 not only plays a good fixing role, but also has good flame retardant properties. Moreover, when a fire accident occurs in the active beacon cable 1000, the inner lining layer 200 will not emit toxic and harmful gases when burning, which is more environmentally friendly.

[0043] In another embodiment, the inner lining layer 200 is made of polyvinyl chloride. The polyvinyl chloride is extruded into the gap formed between the first shielding layer 300 and the inner lining layer 200. It should be noted that polyvinyl chloride is a thermoplastic resin formed by polymerizing vinyl chloride monomer under the influence of an initiator or light and heat, and has excellent insulating properties. The inner lining layer 200 made of polyvinyl chloride provides excellent insulation and support.

[0044] Reference Figure 1 As shown, in an active beacon cable 1000 according to an embodiment of the present invention, an isolation layer 500 is provided on the outer periphery of the second shielding layer 400. It should be noted that the isolation layer 500, while protecting the internal structure, can also isolate the inner and outer metal layers, preventing electrochemical corrosion between the different metals, thereby extending the service life of the product.

[0045] In one embodiment, the isolation layer 500 is made of polyvinyl chloride. The characteristics of polyvinyl chloride are not described in detail here. In this embodiment, the isolation layer 500 can provide good insulation, protection and isolation. In another embodiment, the isolation layer 500 is made of halogen-free low-smoke flame-retardant polyolefin material. The characteristics of halogen-free low-smoke flame-retardant polyolefin material are not described in detail here. In this embodiment, the isolation layer 500 can provide good insulation, protection and isolation while being more environmentally friendly.

[0046] Reference Figure 1 As shown, in an active beacon cable 1000 according to one embodiment of the present invention, the armor layer 600 is disposed on the outer periphery of the isolation layer 500. It should be noted that the armor layer 600 primarily protects the internal structure of the active beacon cable 1000. In one embodiment, the armor layer 600 is braided from galvanized steel wire, which provides excellent tensile strength and protects the internal structure.

[0047] Reference Figure 1 As shown, in an active beacon cable 1000 according to one embodiment of the present invention, the outer sheath 700 is provided on the outer periphery of the armor layer 600. It should be noted that the outer sheath 700 and the armor layer 600 together play a protective role for the internal structure of the active beacon cable 1000. In one embodiment, the outer sheath 700 is made of polyvinyl chloride. The properties of polyvinyl chloride are not described in detail here. In this embodiment, the outer sheath 700, while playing a protective role, can also provide a good flame retardant effect, preventing the spread of fire along the cable and expanding losses. In another embodiment, the outer sheath 700 is made of halogen-free low-smoke flame retardant polyolefin material. The properties of halogen-free low-smoke flame retardant polyolefin material are not described in detail here. In this embodiment, the outer sheath 700, while playing a protective role, can also provide a good flame retardant effect, preventing the spread of fire along the cable and expanding losses. At the same time, the combustion of the outer sheath 700 does not produce toxic and harmful gases, which is more environmentally friendly.

[0048] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Active beacon cable, characterized in that, include: A cable having a plurality of strands, wherein the plurality of strands are twisted; an inner lining layer surrounding the outer circumference of the plurality of cables to fix the plurality of cables; A first shielding layer is provided on the outer peripheral side of the inner lining layer and is formed by overlapping and wrapping aluminum-plastic composite tapes, wherein the inner lining layer is made of a halogen-free, low-smoke, flame-retardant polyolefin material, and the halogen-free, low-smoke, flame-retardant polyolefin material is filled in the gap formed by the first shielding layer and the inner lining layer through an extrusion process; a second shielding layer, provided on the outer peripheral side of the first shielding layer and braided by tinned copper wires, wherein the braiding rate of the tinned copper wires is greater than 80%; an isolation layer, provided on the outer peripheral side of the second shielding layer, the isolation layer being made of polyvinyl chloride or halogen-free low-smoke flame-retardant polyolefin material; An armor layer is provided on the outer peripheral side of the isolation layer, and the armor layer is woven from galvanized steel wires; The outer sheath is arranged on the outer peripheral side of the armor layer.

2. The active beacon cable according to claim 1, characterized in that The outer sheath is made of polyvinyl chloride or halogen-free low-smoke flame-retardant polyolefin material.

3. The active beacon cable according to claim 1, characterized in that The cable includes a conductor and an insulating layer, wherein the insulating layer is provided on an outer peripheral side of the conductor.

4. The active beacon cable according to claim 3, characterized in that The conductor is formed by twisting a plurality of tinned copper wires or a plurality of silver-plated copper wires.

5. The active beacon cable according to claim 3, characterized in that The insulating layer is made of foamed polyethylene.

6. The active beacon cable according to claim 3, characterized in that The insulating layer is made of high-density polyethylene.

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