Antistatic and anti-interference control cables for rail transit

Abstract

This utility model discloses an anti-static and anti-interference control cable for rail transit. It relates to the field of cable technology and employs a cable with four sets of control cores, circumferentially separated by a diamond-shaped vibration-damping filler core. An anti-static layer is provided on the outside of each control core. This utility model improves the anti-static capability of the control cores by using an anti-static filler made of natural cotton, which provides anti-static properties. The anti-static layer made of polyethylene terephthalate further enhances the anti-static ability, effectively preventing static electricity from damaging the control cable. The moisture-proof layer made of a fluoropolymer material with a nanoporous structure effectively prevents moisture penetration, improving the moisture resistance of the control cable. Finally, the armor layer made of continuously wound stainless steel strip improves the impact and tensile strength of the control cable, thereby extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to an anti-static and anti-interference control cable for rail transit. Background Technology

[0002] With the development of the national economy, the construction of intercity rail transit systems has expanded rapidly. Due to the special nature of subway systems, the safety performance requirements for control cables used in this field are higher than in general fields. Currently, most control cables used in intercity rail transit systems have poor moisture resistance, resistance to external impact, resistance to signal interference, and antistatic properties, which often leads to low cable safety performance and signal distortion. These cables also tend to break after repeated bending, causing construction difficulties, which in turn affects the cable's service life and increases maintenance costs.

[0003] Therefore, there is an urgent need to improve the moisture resistance, impact resistance, signal interference resistance, and static electricity resistance of control cables used in intercity rail transit in order to improve the stability of intercity rail transit and reduce maintenance costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-static and anti-interference control cable for rail transit, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An antistatic and anti-interference control cable for rail transit includes four sets of control cores, which are circumferentially separated by diamond-shaped vibration-damping filler cores. An antistatic layer is provided on the outside of each control core. Antistatic filler is used to fill the gaps between the control cores, the diamond-shaped vibration-damping filler cores, and the antistatic layer. An outer shielding layer is provided on the outside of the antistatic layer. A moisture-proof layer is provided on the outside of the outer shielding layer. An armor layer is provided on the outside of the moisture-proof layer. An outer sheath is provided on the outside of the armor layer.

[0007] Preferably, the control core includes two conductors, an insulating layer is provided on the outside of the conductors, a rigid filler ball is provided inside the insulating layer and located between the two conductors, and an inner shielding layer is provided on the outside of the insulating layer.

[0008] Preferably, the inner shielding layer is made of aluminum-plastic film wrapping or silver-plated copper-clad aluminum monofilament weaving.

[0009] Preferably, the rhomboid vibration damping filler core is made of thermoplastic polyurethane rubber material.

[0010] Preferably, the antistatic filler is made of natural cotton, and the antistatic layer is made of polyethylene terephthalate.

[0011] Preferably, the outer shielding layer is woven from a composite tape of tin-plated copper wire and aluminum foil.

[0012] Preferably, the moisture-proof layer is made of a fluoropolymer material with a nanoporous structure.

[0013] Preferably, the armor layer is made of continuously wound stainless steel strip, and the outer sheath is made of nitrile rubber.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] The anti-static and anti-interference control cable for rail transit provided by this utility model uses a diamond-shaped vibration-damping filler core to space four sets of control cores, which helps maintain the roundness and balance of the control core structure and enhances mechanical strength. The diamond-shaped vibration-damping filler core is made of thermoplastic polyurethane rubber, which helps to reduce the vibration load borne by the four sets of control cores. The use of an anti-static filler made of natural cotton provides anti-static properties and improves the tensile strength of the control cable. The inclusion of an anti-static layer made of polyethylene terephthalate further enhances the anti-static capability of the control cores, effectively preventing static electricity from damaging the control cable. The cable employs a double-layer shielding method with an inner and outer shielding layer. The inner shielding layer uses… The control cable is made of aluminum-plastic film wrapping or silver-plated copper-clad aluminum monofilament braiding. The outer shielding layer is made of tin-plated copper wire and aluminum foil composite tape, which gives the control cable excellent shielding performance and greatly improves its ability to resist external electromagnetic interference, radio frequency interference and electric field coupling. The moisture-proof layer made of fluorinated polymer material with nanoporous structure can effectively prevent moisture penetration and improve the moisture resistance of the control cable. The armor layer made of stainless steel tape continuously wound can improve the impact and tensile strength of the control cable, thereby extending the service life of the control cable. The outer sheath made of nitrile rubber material has good cushioning properties and can protect the control cable when it is subjected to external impact.

[0016] This invention incorporates a rigid filler ball within the insulation layer and between two conductors. The rigid filler ball possesses strong mechanical strength, which enhances the rigidity of the control wire core, thereby strengthening the overall torsional resistance and exhibiting relatively good recovery force after torsion. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the control wire core of this utility model.

[0020] In the diagram: 1. Control wire core; 1.1. Conductor; 1.2. Rigid filler ball; 1.3. Insulation layer; 1.4. Inner shielding layer; 2. Diamond-shaped vibration damping filler core; 3. Antistatic filler; 4. Antistatic layer; 5. Outer shielding layer; 6. Moisture-proof layer; 7. Armoring layer; 8. Outer sheath. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0022] According to an embodiment of the present invention, an anti-static and anti-interference control cable for rail transit is provided.

[0023] Example 1:

[0024] As shown in the attached diagram of the instruction manual. Figure 1 As shown, the antistatic and anti-interference control cable for rail transit includes four sets of control cores 1, which are circumferentially separated by diamond-shaped vibration-damping filler cores 2. An antistatic layer 4 is provided on the outside of each control core 1. Antistatic filler material 3 is filled in the gap between the control core 1, the diamond-shaped vibration-damping filler cores 2 and the antistatic layer 4. An outer shielding layer 5 is provided on the outside of the antistatic layer 4. A moisture-proof layer 6 is provided on the outside of the outer shielding layer 5. An armor layer 7 is provided on the outside of the moisture-proof layer 6. An outer sheath 8 is provided on the outside of the armor layer 7.

[0025] Example 2:

[0026] As shown in the attached diagram of the instruction manual. Figure 1 , Figure 2 and Figure 3As shown, the anti-static and anti-interference control cable for rail transit uses a diamond-shaped vibration-damping filler core 2 to space the four sets of control cores 1, helping to maintain the roundness and balance of the control core 1 structure and enhance mechanical strength. The diamond-shaped vibration-damping filler core 2 is made of thermoplastic polyurethane rubber, which helps to reduce the vibration load borne by the four sets of control cores 1. The anti-static filler 3, made of natural cotton, provides anti-static properties and improves the tensile strength of the control cable. The anti-static layer 4, made of polyethylene terephthalate, further enhances the anti-static capability of the control cores, effectively preventing damage from static electricity. The cable employs a double-layer shielding method with an inner shielding layer 1.4 and an outer shielding layer 5. The inner shielding layer 1.4 is made of aluminum-plastic film wrapping or silver-plated copper-clad aluminum monofilament braiding, while the outer shielding layer 5 is made of a composite braid of tin-plated copper wire and aluminum foil. This gives the control cable excellent shielding performance, greatly improving its resistance to external electromagnetic interference, radio frequency interference, and electric field coupling. The cable features a moisture-proof layer 6 made of fluoropolymer material with a nanoporous structure, which effectively prevents moisture penetration and improves the cable's moisture resistance. An armor layer 7, made of continuously wound stainless steel strip, enhances the cable's impact and tensile strength, thereby extending its service life. An outer sheath 8, made of nitrile rubber, provides excellent cushioning and protection against external impacts.

[0027] This invention features a rigid filler ball 1.2 disposed within the insulation layer 1.3 and between the two conductors 1.1. The rigid filler ball 1.2 has strong mechanical strength, which improves the hardness of the control wire core 1, thereby enhancing the overall torsional resistance and exhibiting relatively good recovery force after torsion.

[0028] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-static and anti-interference control cable for rail transit, characterized in that: It includes 4 sets of control wire cores (1), which are circumferentially separated by a diamond-shaped vibration damping filler core (2). An antistatic layer (4) is provided on the outside of the control wire core (1). Antistatic filler (3) is filled in the gap between the control wire core (1), the diamond-shaped vibration damping filler core (2) and the antistatic layer (4). An outer shielding layer (5) is provided on the outside of the antistatic layer (4). A moisture-proof layer (6) is provided on the outside of the outer shielding layer (5). An armor layer (7) is provided on the outside of the moisture-proof layer (6). An outer sheath (8) is provided on the outside of the armor layer (7).

2. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The control core (1) includes two conductors (1.1), an insulation layer (1.3) is provided on the outside of the conductors (1.1), a rigid filling ball (1.2) is provided inside the insulation layer (1.3) and between the two conductors (1.1), and an inner shielding layer (1.4) is provided on the outside of the insulation layer (1.3).

3. The anti-static and anti-interference control cable for rail transit according to claim 2, characterized in that: The inner shielding layer (1.4) is made of aluminum-plastic film wrapping or silver-plated copper-clad aluminum monofilament weaving.

4. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The rhomboid vibration damping filler core (2) is made of thermoplastic polyurethane rubber material.

5. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The antistatic filler (3) is made of natural cotton material, and the antistatic layer (4) is made of polyethylene terephthalate material.

6. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The outer shielding layer (5) is made of a composite tape of tin-plated copper wire and aluminum foil.

7. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The moisture-proof layer (6) is made of a fluorinated polymer material with a nanoporous structure.

8. The anti-static and anti-interference control cable for rail transit according to claim 1, characterized in that: The armor layer (7) is made of stainless steel strip continuously wound, and the outer sheath (8) is made of nitrile rubber material.

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