A twist-resistant cable

Abstract

The utility model relates to the technical field of wires and cables, and discloses an anti-twisting cable, including a flame-retardant, wear-resistant and fireproof layer and a plurality of metal wire cores, the front and rear ends of the outer wall of the flame-retardant, wear-resistant and fireproof layer are fixedly connected with fixing rings, the fixing rings on the front and rear sides are fixedly connected with spring coils at the opposite ends, the plurality of metal wire cores are spaced apart from each other by a cross spacer, the outer end of the cross spacer is coated with an insulating layer, and the inner end of the insulating layer and the gap between the cross spacer and the metal wire cores are coated with buffer fillers. In the utility model, by providing a spring coil and a fixing ring, the outer wall of the cable can be protected from being easily damaged by the puncture effect of external sharp objects under the isolation effect of the spring coil, thereby improving the service life of the cable, and by providing a flame-retardant, wear-resistant and fireproof layer and selecting a hard PVC polyvinyl chloride material, the friction resistance of the outer part of the cable body can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to an anti-twisting cable. Background Art

[0002] Torsion-resistant cables are specially designed to withstand the twisting, bending and tensile forces that may be encountered during installation or use. They are commonly found in mobile equipment, robotics, lifting machinery, stage technology and other application scenarios where cables need to move or deform frequently. The design and manufacture of such cables take into account extreme mechanical stress to ensure that the cables can still work normally under harsh conditions of use.

[0003] At present, the anti-twisting cables on the market are generally used in fields with many mechanical equipment. The cables may collide with many mechanical equipment, which may cause the outside of the cable to be easily damaged and the service life to be short. In this regard, to address this technical problem, the present application proposes an anti-twisting cable. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an anti-twisting cable, which is protected by the isolation effect of the spring coil and will not be easily damaged by the puncture effect of external sharp objects.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A twist-resistant cable comprises a flame-retardant, wear-resistant and fire-proof layer and a plurality of metal wire cores, the front and rear ends of the outer wall of the flame-retardant, wear-resistant and fire-proof layer are fixedly connected with fixing rings, the opposite ends of the fixing rings on the front and rear sides are fixedly connected with spring coils, the plurality of metal wire cores are spaced apart from each other by a cross spacer, the outer end of the cross spacer is coated with an insulating layer, and the inner end of the insulating layer and the gap between the cross spacer and the metal wire cores are coated with a buffer filler.

[0007] Furthermore, one end of the outer side of the insulating layer is covered with a copper mesh shielding layer, and the material of the copper mesh shielding layer is a copper wire mesh with uniform weaving density.

[0008] Furthermore, one outer end of the copper mesh shielding layer is coated with a heat insulation layer, and the material of the heat insulation layer is a plastic polymer.

[0009] Furthermore, one end of the outer side of the heat insulation layer is coated with a compression support layer.

[0010] Furthermore, an anti-twisting layer is fixedly connected to one end of the outer side of the compression-resistant support layer, and the material of the flame-retardant, wear-resistant and fire-proof layer is a hard PVC material.

[0011] Furthermore, one inner end of the flame-retardant, wear-resistant and fire-proof layer is coated on the outer wall of the anti-twisting layer.

[0012] Furthermore, the outer walls of the metal wire cores are not in contact with the insulating layer and the outer walls of the cross spacer, and the metal wire cores are evenly arranged along the center line of the outer walls of the cross spacer.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, by arranging a spring coil and a fixing ring, the outer wall of the cable can be protected by the isolation effect of the spring coil and will not be easily damaged by the puncture effect of external sharp objects, thereby improving the service life of the cable; by arranging a flame-retardant, wear-resistant and fireproof layer, a hard PVC polyvinyl chloride material is selected, which has high hardness, strong impact resistance and corrosion resistance, can effectively improve the friction resistance of the outer part of the cable body, and can resist a certain fire burning, and can prevent the cable burning from further spreading the fire; by arranging a compressive support layer and selecting an aromatic polyamide material, the deformation and distortion of the cable structure can be effectively prevented, and the influence of vibration and impact can also be effectively resisted; by arranging a heat-insulating layer and selecting a plastic polymer as a polytetrafluoroethylene material with good temperature resistance, the discharge and short circuit inside the cable can be effectively prevented under high temperature and high pressure environment; by arranging a copper mesh shielding layer with high weaving density, the cable body has good anti-interference performance and electrical conductivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of an anti-twisting cable proposed by the utility model;

[0016] Figure 2 The utility model is a schematic diagram of the spring coil structure of an anti-twisting cable.

[0017] Legend:

[0018] 1. Flame retardant, wear-resistant and fireproof layer; 2. Anti-twisting layer; 3. Compression-resistant support layer; 4. Thermal insulation layer; 5. Copper mesh shielding layer; 6. Insulation layer; 7. Buffer filler; 8. Cross spacer; 9. Metal wire core; 10. Fixing ring; 11. Spring coil. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1-2 The utility model provides an embodiment: a twist-resistant cable, comprising a flame-retardant, wear-resistant and fireproof layer 1 and a plurality of metal cores 9, the front and rear ends of the outer wall of the flame-retardant, wear-resistant and fireproof layer 1 are fixedly connected with fixing rings 10, the opposite ends of the front and rear fixing rings 10 are fixedly connected with spring coils 11, the plurality of metal cores 9 are spaced apart from each other by a cross spacer 8, the outer end of the cross spacer 8 is coated with an insulating layer 6, the inner end of the insulating layer 6 and the gap between the cross spacer 8 and the metal core 9 are coated with a buffer filler 7, the outer walls of the metal cores 9 are not in contact with the insulating layer 6 and the outer wall of the cross spacer 8, and the metal cores 9 are evenly arranged along the center line of the outer wall of the cross spacer 8.

[0021] Specifically, when the cable body is affected by the outer wall, the spring coil 11 is coated on the outer wall surface of the flame retardant, wear-resistant and fireproof layer 1 of the cable body and is in close contact with it, and the coil spacing of the spring coil 11 is small, so that it maintains normal air circulation with the external environment, but the effect of sharp objects on the cable will be isolated from the outer wall of the cable body due to the existence of the spring coil 11, thereby better protecting the cable from damage due to the impact of foreign objects, and the existence of the spring coil 11 is in the form of a spiral stainless steel material, which can provide uniform protection and allow a certain degree of expansion and contraction when the cable is bent, which can resist mechanical damage, wear and improve its bending resistance, and the cross spacer 8 on the outer wall of the internal metal wire core 9 plays a separation role, and a high elastic polymer is selected. The polyamide material is very soft and has good aging resistance, which has little effect on the flexibility and performance of the cable, and the fixing ring 10 is fixed to the outer wall of the cable by adhesive without affecting the normal covering molding of the cable. The insulating layer 6 is made of polyvinyl chloride material, so that the cable body has good insulation performance and prevents the signals between the cables from affecting each other. The buffer filler 7 is made of polyethylene foam material to protect the internal metal core 9 from vibration and impact. The flame retardant, wear-resistant and fireproof layer 1 is made of hard PVC polyvinyl chloride material with high hardness, strong impact resistance and corrosion resistance, which can effectively improve the friction resistance of the outer part of the cable body, and can resist a certain fire, and can prevent the cable from burning and causing the fire to spread further.

[0022] One end of the outer side of the insulating layer 6 is covered with a copper mesh shielding layer 5, and the material of the copper mesh shielding layer 5 is a copper wire mesh with uniform weaving density. One end of the outer side of the copper mesh shielding layer 5 is covered with a thermal insulation layer 4, and the material of the thermal insulation layer 4 is a plastic polymer. One end of the outer side of the thermal insulation layer 4 is covered with a compression support layer 3, and one end of the outer side of the compression support layer 3 is fixedly connected with an anti-twisting layer 2. The material of the flame retardant, wear-resistant and fire-proof layer 1 is a hard PVC material, and one end of the inner side of the flame retardant, wear-resistant and fire-proof layer 1 is covered on the outer wall of the anti-twisting layer 2.

[0023] Specifically, the compressive support layer 3 is made of aromatic polyamide material, which can effectively prevent the deformation and distortion of the cable structure, and can also effectively resist the influence of vibration and impact. The thermal insulation layer 4 is made of polytetrafluoroethylene material, a plastic polymer, which has good temperature resistance and can effectively prevent discharge and short circuit inside the cable under high temperature and high pressure environment. The copper mesh shielding layer 6 has a large weaving density, so that the cable body has good anti-interference performance and electrical conductivity.

[0024] Working principle: First, when the cable body is affected by the outer wall, the spring coil 11 is coated on the outer wall surface of the flame retardant, wear-resistant and fireproof layer 1 of the cable body and is close to it, and the coil spacing of the spring coil 11 is small, so that it maintains normal air circulation with the external environment, but the effect of sharp objects on the cable will be isolated from the outer wall of the cable body due to the existence of the spring coil 11, thereby better protecting the cable from damage due to the impact of foreign objects, and the spring coil 11 exists in the form of a spiral stainless steel material, which can provide uniform protection and allow a certain degree of expansion and contraction when the cable is bent, which can resist mechanical damage, wear and improve its bending resistance, and the cross spacer 8 on the outer wall of the internal metal wire core 9 plays a separating role, and a high elastic polymer is selected to form a polyamide material, which is very soft and has good aging resistance, and has little effect on the flexibility and performance of the cable, and the fixing ring 10 is fixed to the outer wall of the cable by adhesive without affecting the normal covering molding of the cable.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A twist-resistant cable, comprising a flame-retardant, wear-resistant and fire-resistant layer (1) and a plurality of metal wire cores (9), characterized in that: The front and rear ends of the outer wall of the flame-retardant, wear-resistant and fireproof layer (1) are fixedly connected with fixing rings (10), and the opposite ends of the fixing rings (10) on the front and rear sides are fixedly connected with spring coils (11), and the plurality of metal wire cores (9) are spaced apart from each other by a cross spacer (8), and the outer end of the cross spacer (8) is coated with an insulating layer (6), and the inner end of the insulating layer (6) and the gap between the cross spacer (8) and the metal wire core (9) are coated with a buffer filler (7).

2. The twist-resistant cable according to claim 1, characterized in that: One end of the outer side of the insulating layer (6) is coated with a copper mesh shielding layer (5), and the material of the copper mesh shielding layer (5) is a copper wire mesh with uniform weaving density.

3. The twist-resistant cable according to claim 2, characterized in that: One end of the outer side of the copper mesh shielding layer (5) is coated with a heat insulation layer (4), and the material of the heat insulation layer (4) is a plastic polymer.

4. The twist-resistant cable according to claim 3, characterized in that: One end of the outer side of the heat insulation layer (4) is coated with a compression-resistant support layer (3).

5. The twist-resistant cable according to claim 4, characterized in that: An anti-twisting layer (2) is fixedly connected to one end of the outer side of the compression-resistant support layer (3), and the flame-retardant, wear-resistant and fire-proof layer (1) is made of hard PVC material.

6. The twist-resistant cable according to claim 5, characterized in that: One end of the inner side of the flame-retardant, wear-resistant and fireproof layer (1) is coated on the outer wall of the anti-twisting layer (2).

7. The twist-resistant cable according to claim 1, characterized in that: The outer walls of the metal wire cores (9) are not in contact with the insulating layer (6) and the outer walls of the cross spacer (8), and the metal wire cores (9) are evenly arranged along the center line of the outer wall of the cross spacer (8).

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