CN216145447U - Multi-core low-temperature-resistant shielding cable for railway passenger car - Google Patents
Multi-core low-temperature-resistant shielding cable for railway passenger car Download PDFInfo
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- CN216145447U CN216145447U CN202121989863.8U CN202121989863U CN216145447U CN 216145447 U CN216145447 U CN 216145447U CN 202121989863 U CN202121989863 U CN 202121989863U CN 216145447 U CN216145447 U CN 216145447U
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Abstract
The utility model belongs to the technical field of low-temperature-resistant control cables, and particularly relates to a multi-core low-temperature-resistant shielding cable for a railway passenger car, which comprises a cable conductor, an insulating layer, a wrapping layer, a shielding layer and a sheath layer; the cable conductors are distributed on the inner side of the wrapping layer made of polyurethane uniformly, and an insulating layer made of low-temperature-resistant material is arranged outside each group of cable conductors; the shielding layer is arranged on the outer side of the wrapping layer, the shielding layer is formed by weaving and shielding tin-plated monofilaments, the diameter of each woven monofilament is 0.15mm, the number of weaving spindles is 24 spindles, the weaving angle is controlled to be 50-70 degrees, the weaving density is not less than 80%, and the structure can enable the cable to achieve the best shielding effect; and a sheath layer made of low-temperature resistant material is arranged outside the shielding layer. The cable insulation layer and the sheath layer are both made of low-temperature resistant materials, so that the heat insulation effect is enhanced.
Description
Technical Field
The utility model belongs to the technical field of low-temperature-resistant control cables, and particularly relates to a multi-core low-temperature-resistant shielding cable for a railway passenger car.
Background
The shielding cable is a special cable with the outer layer of the cable sheathed with the mesh braided wire, and the cable shielding means that the mesh braided wire on the outer layer of the cable is grounded at one end, so that external electromagnetic radiation and magnetic field radiation can be directly connected to the ground without generating interference on an inner layer wire. With the development of telecommunication technology, the shielding effect of the existing cable is difficult to deal with various radiation environments. In addition, with the laying of railway tracks, the environment to which a railway passenger car needs to go is more and more severe, the railway passenger car can go to areas with high altitude and low temperature, and a conventional cable does not have low temperature resistance, so that the service life of the cable can be greatly shortened when the railway passenger car runs in a long-term severe environment; therefore, the requirements for cables for rolling stock are also increasing, and a low-temperature resistant shielding cable for railway passenger cars is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a multi-core low-temperature-resistant shielding cable for a railway passenger car.
In order to achieve the purpose, the technical scheme of the application is as follows:
a multi-core low temperature resistant shielding cable for a railway passenger car comprises a cable conductor, an insulating layer, a wrapping layer, a shielding layer and a sheath layer;
the cable conductors are distributed on the inner side of the wrapping layer made of polyurethane uniformly, and an insulating layer made of low-temperature-resistant material is arranged outside each group of cable conductors; the shielding layer is arranged on the outer side of the wrapping layer, the shielding layer is formed by weaving and shielding tin-plated monofilaments, the diameter of each woven monofilament is 0.15mm, the number of the woven ingots is 24, the weaving angle is controlled to be 50-70 degrees, and the weaving density is not less than 80%; and a sheath layer made of low-temperature resistant material is arranged outside the shielding layer.
Furthermore, the outer wall of the sheath layer is spiral, and a reflective belt is embedded in the spiral groove.
Further, the cable conductor is in a 1+6+12 stranded form, and the pitch-diameter ratio is 12-14.
Furthermore, the thickness of the insulating layer is controlled to be 0.18-0.28 mm.
Furthermore, the thickness of the sheath layer is controlled to be 0.3-0.5 mm.
Compared with the prior art, the utility model has the following beneficial effects:
1. the cable insulation layer and the sheath layer are both made of low-temperature resistant materials, so that the cable insulation layer and the sheath layer are simple and convenient in processing technology and high in production efficiency on the basis of enhancing the heat preservation effect due to the simple structure;
2. in addition, the thickness of the insulating layer and the sheath layer is far lower than that of the similar products, and the cable is small in size and light in weight;
3. the cable of the utility model has the advantages that the service temperature is-40 ℃ to +105 ℃, the relative humidity of the service environment can reach 95%, the maximum altitude can reach 2500m, and the cable has the characteristics of excellent anti-interference, flame retardance, smoke density, toxicity index, low temperature resistance and the like;
4. the nonmetal used for preparing the cable is a low-smoke halogen-free material, is safe, environment-friendly and nontoxic, and is convenient to recycle.
Drawings
Fig. 1 is a schematic cross-sectional view of a cable of the present invention.
In the figure: 1. cable conductor, 2, insulation layer; 3. wrapping a covering; 4. a shielding layer; 5. a sheath layer.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
example (b):
as shown in figure 1: the utility model provides a multi-core low-temperature-resistant shielding cable for a railway passenger car, which specifically comprises a cable conductor 1, an insulating layer 2, a wrapping layer 3, a shielding layer 4 and a sheath layer 5.
The cable conductors 1 are distributed on the inner side of the wrapping layer 3 uniformly, and an insulating layer 2 made of low-temperature-resistant materials is arranged outside each group of cable conductors 1; the shielding layer 4 is arranged on the outer side of the wrapping layer 3, the shielding layer 4 is formed by weaving a tinned monofilament for shielding, the diameter of the woven monofilament is 0.15mm, the number of weaving spindles is 24, the weaving angle is controlled to be 50-70 degrees, and the weaving density is not less than 80%, so that the cable achieves the best shielding effect; and a sheath layer 5 made of low-temperature resistant material is arranged on the outer side of the shielding layer 4 to further insulate the cable conductor 1.
Preferably, the cable conductor 1 is formed by twisting tinned monofilaments, the twisting mode is a twisting mode of 1+6+12, the pitch diameter ratio is 12-14, and the monofilaments are compactly arranged and have small outer diameter after the conductor is twisted.
Preferably, the insulating layer 2 is made of low-temperature-resistant materials, a pipe extruding form is adopted during insulating extrusion, the thickness of the insulating layer 2 is controlled to be 0.18-0.28 mm, the production efficiency is high, and the thickness is uniform.
Preferably, the wrapping material adopted by the wrapping layer 3 is polyurethane, which can enhance the low temperature resistance of the cable due to the good heat preservation effect of the polyurethane.
Preferably, the sheath layer 5 is made of low-temperature-resistant materials, the sheath layer is extruded in a pipe extruding mode when being extruded, the thickness is controlled to be 0.3-0.5 mm, the production efficiency is high, the thickness is uniform, and the surface is smooth.
Preferably, the outer wall of the sheath layer 5 is spiral, and the reflective belt is embedded in the spiral groove, so that when the cable is scattered on the charging station ground, the cable can be clearly and rapidly identified when a charging vehicle passes through, and the cable cannot be rolled and damaged.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (5)
1. The utility model provides a resistant low temperature shielded cable of multicore that railway passenger train was used which characterized in that: the cable comprises a cable conductor, an insulating layer, a wrapping layer, a shielding layer and a sheath layer;
the cable conductors are distributed on the inner side of the wrapping layer made of polyurethane uniformly, and an insulating layer made of low-temperature-resistant material is arranged outside each group of cable conductors; the shielding layer is arranged on the outer side of the wrapping layer, the shielding layer is formed by weaving and shielding tin-plated monofilaments, the diameter of each woven monofilament is 0.15mm, the number of the woven ingots is 24, the weaving angle is controlled to be 50-70 degrees, and the weaving density is not less than 80%; and a sheath layer made of low-temperature resistant material is arranged outside the shielding layer.
2. The multi-core low temperature resistant shielded cable for railway passenger cars of claim 1, wherein: the outer wall of the sheath layer is spiral, and a reflective belt is embedded in the spiral groove.
3. The multi-core low temperature resistant shielded cable for railway passenger cars of claim 1, wherein: the cable conductor is in a 1+6+12 stranding form, and the pitch-diameter ratio is 12-14.
4. The multi-core low temperature resistant shielded cable for railway passenger cars of claim 1, wherein: the thickness of the insulating layer is controlled to be 0.18-0.28 mm.
5. The multi-core low temperature resistant shielded cable for railway passenger cars of claim 1, wherein: the thickness of the sheath layer is controlled to be 0.3-0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121989863.8U CN216145447U (en) | 2021-08-23 | 2021-08-23 | Multi-core low-temperature-resistant shielding cable for railway passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121989863.8U CN216145447U (en) | 2021-08-23 | 2021-08-23 | Multi-core low-temperature-resistant shielding cable for railway passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216145447U true CN216145447U (en) | 2022-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121989863.8U Active CN216145447U (en) | 2021-08-23 | 2021-08-23 | Multi-core low-temperature-resistant shielding cable for railway passenger car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216145447U (en) |
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2021
- 2021-08-23 CN CN202121989863.8U patent/CN216145447U/en active Active
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