A double-sheathed antistatic and tensile-resistant rail transit control cable

Abstract

This utility model discloses a double-sheathed antistatic and tensile-resistant rail transit control cable. It relates to the field of cable technology and employs a control cable core and a tensile layer. The control cable core is configured with five groups, and a flame-retardant filling layer is provided on the outside of each core. A central tensile-resistant filling rope is provided in the center of the flame-retardant filling layer. This utility model increases the tensile strength of the entire control cable by providing a central tensile-resistant filling rope made of poly(p-phenylene benzodioxazole) fiber material. The flame-retardant filling layer made of glass fiber material, which has excellent high-temperature resistance and fire resistance, improves the flame-retardant effect of the control cable. The use of a first antistatic layer and a second antistatic layer, the first being made of polyvinyl chloride (PVC) and the second being made of conductive fiber material, significantly enhances the antistatic effect of the control cable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a double-sheathed antistatic and tensile-resistant rail transit control cable. Background Technology

[0002] Rail transit refers to a type of transportation or system where vehicles operate on specific tracks. The most typical rail transit system is the railway system, composed of traditional trains and standard railways. Common rail transit systems include traditional railways such as subways, light rail, and trams. Newer rail transit systems include maglev systems, monorail systems, and automated people mover systems. In Chinese national standards, urban rail transit is defined as "a general term for rapid, high-capacity public transportation that is usually powered by electricity and operates using a wheel-rail system." Therefore, cables are required in rail transit to ensure stable circuit operation. However, in practical applications, control cables in rail transit need to have better anti-static and tensile strength properties to ensure greater safety in rail transit applications. To address this, we provide a double-sheathed anti-static and tensile-resistant rail control cable to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a double-sheathed, anti-static, tensile-resistant rail transit control cable, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A double-sheathed antistatic and tensile-resistant rail transit control cable includes a control cable core and a tensile layer. The number of control cable cores is set to five groups. A flame-retardant filling layer is provided on the outside of the control cable core. A central tensile-resistant filling rope is provided in the middle of the flame-retardant filling layer. An inner protective layer is provided on the outside of the flame-retardant filling layer. A tensile layer is provided on the periphery of the inner protective layer. A second antistatic layer is provided on the outside of the tensile layer. An anti-deformation layer is provided on the outside of the second antistatic layer. An outer protective layer is provided on the outside of the anti-deformation layer.

[0006] Preferably, the control cable core includes a conductor, a conductor shielding layer is disposed outside the conductor, an insulation layer is disposed outside the conductor shielding layer, and a first antistatic layer is disposed outside the insulation layer.

[0007] Preferably, a plurality of reinforcing steel wires are arranged in a ring inside the tensile layer, and the gaps between the plurality of reinforcing steel wires in the tensile layer are filled with a flexible filler.

[0008] Preferably, the first antistatic layer is made of polyvinyl chloride (PVC) material.

[0009] Preferably, the central tensile filler rope is made of poly(p-phenylene benzodioxazole) fiber material, and the flame-retardant filler layer is made of glass fiber material.

[0010] Preferably, both the inner and outer protective layers are made of modified polyurethane elastomer sheath material through double-layer co-extrusion.

[0011] Preferably, the flexible filler is made of rock wool fiber material.

[0012] Preferably, the second antistatic layer is made of conductive fiber material, and the anti-deformation layer is made of elastic steel material.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] This utility model provides a double-sheathed antistatic and tensile-resistant rail transit control cable. It features a central tensile-resistant filler rope made of poly(p-phenylene benzodioxazole) fiber, which increases the overall tensile strength of the control cable. A flame-retardant filler layer made of glass fiber, with its excellent high-temperature resistance and fire resistance, further enhances the cable's flame-retardant effect. The combined use of a first and second antistatic layer (the first made of polyvinyl chloride, PVC, and the second of conductive fiber) significantly improves the cable's antistatic properties. The use of an inner and outer protective layer, both co-extruded from modified polyurethane elastomer sheath material, significantly increases the cable's tensile strength. Finally, an anti-deformation layer made of elastic steel enhances the cable's tensile strength, preventing core deformation and breakage.

[0015] This invention features a tensile layer with several reinforcing steel wires arranged in a ring within it. This enhances the tensile strength of the control cable, preventing breakage of the cable core when pulled. The gaps between the reinforcing steel wires within the tensile layer are filled with a flexible filler made of rock wool fiber, improving the stability of the reinforcing wire diameter. The combined use of a central tensile filler rope and the tensile layer further enhances the tensile strength of the control cable, ensuring stable signal transmission during dragging. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the control cable core of this utility model.

[0019] Figure 4 for Figure 2 A magnified schematic diagram of the local structure at point A.

[0020] In the diagram: 1. Control cable core; 1.1. Conductor; 1.2. Conductor shielding layer; 1.3. Insulation layer; 1.4. First antistatic layer; 2. Central tensile filler rope; 3. Flame retardant filler layer; 4. Inner protective layer; 5. Tensile layer; 5.1. Reinforcing steel wire; 5.2. Flexible filler; 6. Second antistatic layer; 7. Deformation-resistant layer; 8. Outer protective layer. 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, a double-sheathed antistatic and tensile-resistant rail transit control cable is provided.

[0023] Example 1:

[0024] As shown in the attached diagram of the instruction manual. Figure 1 As shown, a double-sheathed antistatic and tensile-resistant rail transit control cable includes a control cable core 1 and a tensile layer 5. The number of control cable cores 1 is set to five groups. A flame-retardant filling layer 3 is provided on the outside of the control cable core 1. A central tensile-resistant filling rope 2 is provided in the middle of the flame-retardant filling layer 3. An inner protective layer 4 is provided on the outside of the flame-retardant filling layer 3. A tensile layer 5 is provided on the periphery of the inner protective layer 4. A second antistatic layer 6 is provided on the outside of the tensile layer 5. An anti-deformation layer 7 is provided on the outside of the second antistatic layer 6. An outer protective layer 8 is provided on the outside of the anti-deformation layer 7.

[0025] Example 2:

[0026] As shown in the attached diagram of the instruction manual. Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a double-sheathed antistatic and tensile-resistant rail transit control cable features a central tensile-resistant filler rope 2 made of poly(p-phenylene benzodioxazole) fiber, which increases the overall tensile strength of the cable. A flame-retardant filler layer 3 made of glass fiber, with its excellent high-temperature resistance and fire resistance, further enhances the cable's flame-retardant effect. The combined use of a first antistatic layer 1.4 (made of polyvinyl chloride, PVC) and a second antistatic layer 6 (made of conductive fiber) significantly improves the cable's antistatic properties. Finally, the combined use of an inner protective layer 4 and an outer protective layer 8, both co-extruded from modified polyurethane elastomer sheath material, significantly increases the cable's tensile strength. By incorporating a tensile layer 5, within which several reinforcing steel wires 5.1 are arranged in a ring, the tensile strength of the control cable is further enhanced, preventing breakage of the control cable core 1 when the control cable is pulled. The gaps between the reinforcing steel wires 5.1 within the tensile layer 5 are filled with a flexible filler 5.2 made of rock wool fiber material, which improves the stability of the diameter of the reinforcing steel wires 5.2. The combined use of a central tensile filler rope 2 and the tensile layer 5 further enhances the tensile strength of the control cable, ensuring the stability of signal transmission during dragging. The inclusion of a deformation-resistant layer 7 made of elastic steel further enhances the tensile strength of the control cable, preventing deformation and breakage of the control cable core 1.

[0027] 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.

[0028] 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.

[0029] 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. A double-sheathed, anti-static, tensile-resistant rail transit control cable, characterized in that: The control cable core (1) and tensile layer (5) are included. The number of control cable cores (1) is set to five. A flame-retardant filling layer (3) is provided on the outside of the control cable core (1). A central tensile filling rope (2) is provided in the middle of the flame-retardant filling layer (3). An inner protective layer (4) is provided on the outside of the flame-retardant filling layer (3). A tensile layer (5) is provided on the periphery of the inner protective layer (4). A second antistatic layer (6) is provided on the outside of the tensile layer (5). An anti-deformation layer (7) is provided on the outside of the second antistatic layer (6). An outer protective layer (8) is provided on the outside of the anti-deformation layer (7).

2. The double-jacketed anti-static tensile control cable for rail transit according to claim 1, characterized in that: The control cable core (1) includes a conductor (1.1), a conductor shielding layer (1.2) is provided on the outside of the conductor (1.1), an insulation layer (1.3) is provided on the outside of the conductor shielding layer (1.2), and a first antistatic layer (1.4) is provided on the outside of the insulation layer (1.3).

3. The double-jacketed anti-static tensile control cable for rail transit according to claim 1, characterized in that: The tensile layer (5) has a plurality of reinforcing steel wires (5.1) arranged in a ring inside, and the gaps between the tensile layer (5) and the plurality of reinforcing steel wires (5.1) are filled with flexible filler (5.2).

4. The double-jacketed anti-static tensile control cable for rail transit according to claim 2, characterized in that: The first antistatic layer (1.4) is made of polyvinyl chloride (PVC) material.

5. The double-sheathed antistatic tensile-resistant rail transit control cable according to claim 1, characterized in that: The central tensile filling rope (2) is made of poly(p-phenylene benzodioxazole) fiber material, and the flame-retardant filling layer (3) is made of glass fiber material.

6. The double-jacketed anti-static tensile control cable for rail transit according to claim 1, characterized in that: Both the inner protective layer (4) and the outer protective layer (8) are made of modified polyurethane elastomer sheath material through double-layer co-extrusion.

7. The double-jacketed anti-static tensile control cable for rail transit according to claim 3, characterized in that: The flexible filler (5.2) is made of rock wool fiber material.

8. The double-jacketed anti-static tensile control cable for rail transit according to claim 1, characterized in that: The second antistatic layer (6) is made of conductive fiber material, and the anti-deformation layer (7) is made of elastic steel material.

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