Novel anti-tearing cable for rail transit bridging system

Abstract

The utility model discloses a novel anti-tearing cable for a rail transit bridging system. Comprising a conductor, a first belting layer arranged on the periphery of the conductor, an insulating layer arranged on the periphery of the first belting layer, a second belting layer arranged on the periphery of the insulating layer, a braid layer arranged on the periphery of the second belting layer, a third belting layer arranged on the periphery of the braid layer, and an inner sheath arranged on the periphery of the third belting layer, the braided reinforcing layer is arranged on the periphery of the inner sheath; the outer sheath is arranged on the periphery of the braided reinforcing layer; the braid layer is made of metal composite basalt fibers; the inner sheath is made of high-tear-resistance silicone rubber; and the outer sheath is made of high-tear-resistance silicone rubber. The sheath is made of high-tear-resistance silicone rubber, and the high-tear-resistance silicone rubber improves the application performance of torsion resistance, swing resistance and other dynamic environments. And by using the metal composite basalt fiber braid layer, an extremely high temperature-resistant effect is obtained. The flexibility of the shielding layer is greatly improved, and the influence of swinging, torsion and vibration in a dynamic environment can be resisted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cable structure especially relates to a novel rail transit cross connecting system tear resistance cable. BACKGROUND

[0002] At present, the EN 50382 standard series of silicone rubber cables have been maturely applied to the wiring and electrical connection of the equipment in the rail transit vehicle, and have the high temperature resistance of 150 DEG C and the inherent softness of the material.

[0003] However, the following problems exist at present:

[0004] 1. The ordinary silicone rubber material has poor tear resistance and cannot meet the dynamic requirements;

[0005] 2. The ordinary braided layer is prone to breakage during severe swinging and long-term bending, resulting in a decrease in shielding effect;

[0006] 3. The broken shielding wire can pierce the insulation or sheath during continuous swinging, causing the cable to fail;

[0007] 4. The ordinary tinned soft copper wire or alloy wire cannot withstand the high temperature of the vulcanization process of the silicone rubber, resulting in high-temperature embrittlement of the shielding wire.

[0008] In addition, the dynamic movement of the cable caused by the train during turning and the like also needs to be considered. Therefore, on the basis of the ordinary EN50382 standard, the development of the tear-resistant cable to meet the overall coverage of the train selection requirements has become inevitable for the development of the industry. SUMMARY

[0009] The utility model overcomes the insufficient prior art and provides a novel rail transit cross connecting system tear resistance cable.

[0010] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a novel rail transit cross connecting system tear resistance cable, which comprises a conductor, a first wrapping layer arranged on the outer periphery of the conductor, an insulation layer arranged on the outer periphery of the first wrapping layer, a second wrapping layer arranged on the outer periphery of the insulation layer, a braided layer arranged on the outer periphery of the second wrapping layer, a third wrapping layer arranged on the outer periphery of the braided layer, an inner sheath arranged on the outer periphery of the third wrapping layer, a braided reinforcing layer arranged on the outer periphery of the inner sheath, and an outer sheath arranged on the outer periphery of the braided reinforcing layer.

[0011] The braided layer is made of metal composite basalt fiber; the inner sheath is made of high tear resistance silicone rubber; and the outer sheath is made of high tear resistance silicone rubber.

[0012] Further specifically, the insulation layer is made of high tear resistance silicone rubber.

[0013] Further specifically, the tensile strength of the high tear resistance type silicone rubber is greater than or equal to 9 Mpa, and the elongation at break is greater than or equal to 400%.

[0014] Further specifically, when the high tear resistance type silicone rubber is arranged in a crescent shape, the tear resistance of the high tear resistance type silicone rubber is greater than or equal to 35 N / mm.

[0015] Further specifically, when the high tear resistance type silicone rubber is arranged in a small pants type, the tear resistance of the high tear resistance type silicone rubber is greater than or equal to 13 N / mm.

[0016] Further specifically, the woven reinforcing layer is arranged as a polyester filament.

[0017] Further specifically, the conductor is arranged as a tinned copper conductor.

[0018] Further specifically, the first wrapping layer, the second wrapping layer and the third wrapping layer are all arranged as semi-conductive shielding tape.

[0019] Further specifically, the weaving density of the shielding layer is arranged as 90%.

[0020] The utility model solves the defects in the background art, and has the following beneficial effects:

[0021] 1. The sheath is arranged as high tear resistance silicone rubber, and the high tear resistance rubber increases the application performance in dynamic environments such as torsion and swing.

[0022] 2. The use of metal composite basalt fiber woven layer achieves extremely high temperature resistance. The softness of the shielding layer is greatly improved, and can resist the influence of swing, torsion and vibration in dynamic environments. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings and examples;

[0024] Figure 1 is the sectional structure schematic view of the utility model;

[0025] In the figure: 1, conductor; 2, first wrapping layer; 3, insulating layer; 4, second wrapping layer; 5, woven layer; 6, third wrapping layer; 7, inner sheath; 8, reinforcing layer; 9, outer sheath. DETAILED DESCRIPTION

[0026] For the purpose, technical scheme and advantages of the utility model, the following will be combined with the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment will be described in more detail. In the drawings, the same or similar numerals represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the utility model, not all. The embodiments described below by reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the utility model. The embodiments of the utility model will be described in detail below with reference to the drawings.

[0028] It should be understood that the drawings are only used to exemplarily illustrate the present application.

[0029] The utility model will be further described in detail in combination with the drawings and embodiments, and these drawings are all simplified schematic diagrams, only the basic structure of the utility model is schematically shown.

[0030] A novel rail transit crossing system tear-resistant cable, as shown in Figure 1 It comprises a conductor 1, a first tape layer 2 arranged on the outer periphery of the conductor 1, an insulation layer 3 arranged on the outer periphery of the first tape layer 2, a second tape layer 4 arranged on the outer periphery of the insulation layer 3, an inner sheath 7 arranged on the outer periphery of the second tape layer 4, a braided reinforcing layer 8 arranged on the outer periphery of the inner sheath 7 and an outer sheath 9 arranged on the outer periphery of the braided reinforcing layer 8.

[0031] The conductor 1 is provided as a tin-plated copper conductor, specifically, the conductor 1 adopts a type 6 tin-plated copper conductor, the type 6 tin-plated copper conductor is a super-soft conductor, and the conductor 1 is twisted by a plurality of tin-plated copper monofilament bundles, the diameters of each tin-plated copper monofilament are the same, the cable finished product produced by the same is easy to bend, the difficulty of cable installation and laying can be reduced, and the possibility of cable breakage can be reduced.

[0032] The first wrapping layer 2 is arranged as a semi-conductive shielding tape, the first wrapping layer 2 is arranged between the conductor 1 and the insulation layer 3, and the first wrapping layer 2 has good contact with the insulation layer 3, so as to avoid partial discharge between the conductor 1 and the insulation layer 3, and the semi-conductive shielding tape can homogenize the electric field.

[0033] The insulation layer 3 is arranged as high-anti-tear silicone rubber, in the prior art, silicone rubber is mostly used, in the scheme, the silicone rubber is changed to high-anti-tear silicone rubber, the silicone rubber has excellent high and low temperature resistance, aging resistance, excellent dielectric property and physiological inertia, but the anti-tear strength is low, the high-anti-tear silicone rubber used in the scheme improves the tear strength of the silicone rubber and increases the application performance of the silicone rubber material in anti-torsion, swing and other dynamic environments.

[0034] In the scheme, if the high-anti-tear silicone rubber is arranged in a crescent shape, the anti-tear strength of the high-anti-tear silicone rubber is greater than or equal to 35 N / mm, if the high-anti-tear silicone rubber is arranged in a small pants shape, the anti-tear strength of the high-anti-tear silicone rubber is greater than or equal to 13 N / mm, and no matter whether the high-anti-tear silicone rubber is arranged in a crescent shape or a small pants shape, the tensile strength of the high-anti-tear silicone rubber is greater than or equal to 9 Mpa, and the elongation at break is greater than or equal to 400%.

[0035] The second wrapping layer 4 is arranged on the outer periphery of the insulation layer 3, the second wrapping layer 4 is arranged as a semi-conductive shielding tape, the second wrapping layer 4 is arranged on the outer periphery of the insulation layer 3 and has good contact with the insulation layer 3, so as to avoid partial discharge between the insulation layer 3 and the braided layer 5.

[0036] The braided layer 5 is arranged on the outer periphery of the second wrapping layer 4, and the braided layer 5 is arranged by braiding metal composite basalt fibers. The metal composite basalt fibers have extremely high wear resistance and friction resistance, can operate for a long time under heavy load and low speed without significant wear or wear debris, and their wear resistance can also provide reliable protection when handling high-intensity movements. The metal composite basalt fibers have good thermal vibration stability at 200℃, and the maximum working temperature reaches 650℃. The metal composite basalt fibers do not need to use chemical drugs in the production process, do not pollute the environment and are not hygroscopic, and are an environmentally friendly material that meets the requirements of sustainable development.

[0037] The metal composite basalt fibers include tin-plated copper and basalt fibers, and the annealed and flattened tin-plated copper material is wound on the outer periphery of the basalt fibers. A braided layer 5 with a braiding density of 90% is braided on the cable, in an embodiment, when the outer diameter of the cable is 10 mm, a braided layer 5 with a braiding density of 90% is braided on the cable, 4 metal composite aramid fibers are used for cabling, and a 24-spindle braiding machine is used for braiding, and the whole can withstand a tension of 5184 N when subjected to force simultaneously.

[0038] A third tape layer 6 is arranged on the outer periphery of the braided layer 5, and the third tape layer 6 is provided with a semi-conductive shielding tape for homogenizing electric field.

[0039] An inner sheath 7 is arranged on the outer periphery of the third tape layer 6, and the inner sheath 7 is made of high-tear-resistance silicon rubber.

[0040] A braided reinforcing layer 8 is arranged on the outer periphery of the inner sheath 7, and the braided reinforcing layer 8 is made of polyester silk.

[0041] An outer sheath 9 is arranged on the outer periphery of the braided reinforcing layer 8, and the outer sheath 9 is made of high-tear-resistance silicon rubber.

[0042] The utility model solves the defects in the background art, and has the following beneficial effects:

[0043] The silicon rubber material commonly used at present is replaced by tear-resistant silicon rubber, thereby increasing the tear resistance and prolonging the service life of the cable in a dynamic environment.

[0044] The braided layer 5 is made of metal composite basalt fiber, thereby reducing the risk of single-fiber breakage in a dynamic environment.

[0045] Three tape layers are arranged to avoid the influence of partial discharge as much as possible.

[0046] The tin-plated copper conductor is arranged to make the cable product easy to bend, thereby reducing the difficulty of cable installation and laying and reducing the possibility of cable breakage.

[0047] The braided reinforcing layer 8 is made of polyester silk, thereby having excellent properties such as ultrahigh strength, high modulus, high temperature resistance and chemical corrosion resistance, and being able to meet the power transmission requirements in various harsh environmental conditions.

[0048] The above is based on the ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

[0049] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all belong to the protection scope of the present application.

[0050] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.

[0051] Furthermore, various different embodiments of the present application can also be combined arbitrarily, as long as they do not deviate from the idea of the present application, and they should also be considered as disclosed by the present application.

Claims

1. A novel rail transit crossing system tear resistant cable characterized by: The conductor (1), the first wrapping layer (2) arranged at the outer periphery of the conductor (1), the insulating layer (3) arranged at the outer periphery of the first wrapping layer (2), the second wrapping layer (4) arranged at the outer periphery of the insulating layer (3), the braided layer (5) arranged at the outer periphery of the second wrapping layer (4), the third wrapping layer (6) arranged at the outer periphery of the braided layer (5), the inner sheath (7) arranged at the outer periphery of the third wrapping layer (6), the braided reinforcing layer (8) arranged at the outer periphery of the inner sheath (7), and the outer sheath (9) arranged at the outer periphery of the braided reinforcing layer (8); The braided layer (5) is made of metal composite basalt fiber; the inner sheath (7) is made of high tear-resistant silicone rubber; and the outer sheath (9) is made of high tear-resistant silicone rubber. The metal composite basalt fiber comprises basalt fiber and tinned copper wire wound on the basalt fiber.

2. The novel rail transit crossing system tear resistant cable of claim 1, wherein: The insulating layer (3) is made of high tear-resistant silicone rubber.

3. The novel rail transit crossing system tear resistant cable of claim 1 or 2, wherein: The high tear-resistant silicone rubber has a tensile strength greater than or equal to 9 Mpa and an elongation at break greater than or equal to 400%.

4. The novel rail transit crossing system tear resistant cable of claim 1 or 2, wherein: When the high tear-resistant silicone rubber is arranged in a crescent shape, the tear resistance of the high tear-resistant silicone rubber is greater than or equal to 35 N / mm.

5. The novel rail transit crossing system tear resistant cable as claimed in claim 1 or 2, wherein: When the high tear-resistant silicone rubber is arranged in a small pants shape, the tear resistance of the high tear-resistant silicone rubber is greater than or equal to 13 N / mm.

6. The novel rail transit crossing system tear resistant cable of claim 1, wherein: The braided reinforcing layer (8) is made of polyester silk.

7. The novel rail transit crossing system tear resistant cable of claim 1, wherein: The conductor (1) is made of tinned copper conductor.

8. The novel rail transit crossing system tear resistant cable of claim 1, wherein: The first wrapping layer (2), the second wrapping layer (4), and the third wrapping layer (6) are all made of semi-conductive shielding tape.

9. The novel rail transit crossing system tear resistant cable of claim 1, wherein: The braided density of the braided layer (5) is 90%.

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