Industrial accompanying cable

Abstract

The utility model discloses an industrial accompanying cable. The industrial accompanying cable comprises a plurality of conductors which are arranged and a non-woven fabric layer, the non-woven fabric layer completely covers the plurality of conductors; each conductor is coated with an insulating layer; a bulletproof wire filling layer is arranged between the non-woven fabric layer and the conductor; the outside of the non-woven fabric layer is coated with a woven shielding layer; an outer sheath layer is arranged outside the braided shielding layer; in order to meet the requirement that the cable moves back and forth without stop, all components of the cable are elaborately designed, it is guaranteed that the electrical insulation performance is stable in millions of times of reciprocating motion, the normally-powered short / open circuit or breakdown faults caused by fatigue-resistant cracking of the cable are reduced, the tightly-woven braided shielding layer has the torsion resistance effect, and the service life of the cable is prolonged. And meanwhile, the tensile resistance and the winding resistance in the accompanying process are also improved, so that the cable meets the requirements of tensile resistance and no core breakage, the market demand is met, and an enterprise has good market competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric wires and cables, and in particular to an industrial accompanying cable. Background Art

[0002] With the rapid development of intelligent equipment, the quality of cables that use electricity as the driving force to make components move back and forth throughout the life cycle of the equipment is particularly important. Wires and cables need to be closely matched with the equipment as the mechanical action of the moving section. Therefore, the reliability, safety, number of reciprocating bends and other performance of cables are put forward higher and higher requirements during fast and long-term repeated reciprocating movements. The number of reciprocating bends and turns is often millions. Therefore, in order to pursue the development of special cables that meet the needs of intelligent devices, there is a good R&D motivation and broad market demand.

[0003] The names of the products on the market are: driving cable, driving accompanying cable, driving reel cable, bucket wheel machine cable, crane reel cable, etc. Most of them are used in gantry cranes, elevators, tower cranes, crane driving, port machinery tugs, large bridge cranes, bucket wheel stacker and reclaimers and other reel devices; the advantages of these products are flexibility, bending resistance, flame retardancy, wear resistance, oil resistance, ozone resistance, waterproofness, UV resistance, and high softness at low temperatures. The outer sheath often uses high-quality imported polymer special flexible tensile and wear-resistant mixed materials, with good tensile and wear resistance, and the lifespan is 3-6 times that of ordinary YC cables; it can basically guarantee regular use, but with the safety of the full life cycle elements, power personnel are required to conduct regular inspections and maintenance, which requires huge material costs and manpower.

[0004] For conventional electrical connecting wires, when ordinary bare copper conductors are used, they are easily oxidized when used in high temperature environments; the insulation of conventional connecting wires is generally polyvinyl chloride, which is relatively hard, contains more halogens, is not environmentally friendly when burned, and cannot meet the fire protection and flame retardant acceptance requirements of some customers' equipment and buildings.

[0005] Based on the above situation and market demand, our company has developed an industrial mobile cable. Utility Model Content

[0006] The utility model aims to provide an industrial accompanying cable to solve the problems in the prior art.

[0007] In order to achieve the above-mentioned object, the technical solution adopted by the utility model is: an industrial accompanying cable, comprising a plurality of conductors arranged in an arranged manner and a non-woven fabric layer;

[0008] The non-woven fabric layer completely covers the plurality of conductors;

[0009] Each of the conductors is coated with an insulating layer;

[0010] A bulletproof silk filling layer is provided between the non-woven fabric layer and the conductor;

[0011] The non-woven fabric layer is coated with a braided shielding layer;

[0012] An outer sheath layer is provided outside the braided shielding layer.

[0013] Preferably, in one scheme, the multiple arranged conductors are made of oxygen-free copper wires with a small pitch stranding structure.

[0014] Preferably, in one scheme, the stranding structure of the conductor is made by the method of bunch stranding.

[0015] Preferably, in one scheme, the multiple arranged conductors are all formed by a communication line conductor array.

[0016] Preferably, in one scheme, the multiple arranged conductors are composed of a mixture of communication line conductors and power line conductors.

[0017] Preferably, in one scheme, a metal composite tape shielding layer is provided outside the non-woven fabric layer.

[0018] Preferably, in one scheme, an inner sheath layer formed by armor-type extrusion molding is further provided between the metal composite tape shielding layer and the braided shielding layer.

[0019] Preferably, in one scheme, the braided shielding layer is woven from bare copper or tinned copper wires.

[0020] Preferably, in one scheme, multiple steel wires coated with petroleum jelly are arranged in an array inside the outer sheath layer.

[0021] Due to the application of the above technical solutions, the beneficial effects of the present application compared with the prior art are as follows:

[0022] An industrial trailing cable of the present application, in order to meet the continuous back-and-forth movement of the cable, has made elaborate designs for each component of the cable. Through the designs of components such as the conductor, non-woven fabric layer, insulating layer, bulletproof silk filling layer, braided shielding layer, and outer sheath layer, it is ensured that the electrical insulation performance is stable during millions of reciprocating movements, reducing the short circuit / break or breakdown faults of normal power supply caused by fatigue cracking resistance of the cable, ensuring that the stranding structure will not be scattered, the positions of each core are fixed during movement, and will not cause extrusion and serious friction to other cores. The tightly woven braided shielding layer has the function of resisting torsion, and at the same time increases the tensile resistance and flexing resistance during the trailing process, enabling the cable to meet the requirements of tensile resistance and no core breakage, meeting the market demand, and making the enterprise have good market competitiveness. Brief Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Attached Figure 1 is a schematic structural diagram of a product of the industrial trailing cable of the present utility model;

[0025] Attached Figure 2 is another schematic structural diagram of a product of the industrial trailing cable of the present utility model;

[0026] Wherein: 1. Conductor; 2. Non-woven fabric layer; 3. Insulation layer; 4. Bulletproof wire filling layer; 5. Braided shielding layer; 6. Outer sheath layer; 7. Communication line conductor; 8. Power line conductor; 9. Metal composite tape shielding layer; 10. Inner protection layer; 11. Steel wire rope. Specific embodiments

[0027] In order to enable those skilled in the art of this technology to better understand the solutions of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0030] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0031] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0033] Embodiment 1

[0034] Attached Figure 1 A kind of industrial follow - up cable described in the present utility model includes a plurality of conductors 1 arranged in sequence and a non - woven fabric layer 2; the plurality of conductors 1 arranged in sequence are made of oxygen - free copper wires with a small - pitch stranding structure; the stranding structure of the conductor 1 is made by bunch stranding; specifically, the stranding structure must be wound around a stable tensile center with the best lay length. However, due to the application of insulating materials, the stranding structure should be designed according to the motion state. Starting from 12 core wires, the bunch stranding method should be adopted; the plurality of conductors 1 arranged in sequence are all formed by an array of communication line conductors 7;

[0035] Specifically, conductor 1 is made of 0.10mm oxygen-free copper wire with a small pitch twist, which meets the VDE0295CLASS5 standard; the oxygen-free copper wire has the following characteristics: 1. The oxygen content is less than 0.03 parts per million, which prevents the cable core from becoming brittle and breaking during frequent movement and use, thereby increasing the resistance of conductor 1. According to the energy formula: Q=I^2RT, the resistance increases and the heat increases per unit time, which will reduce the safety, stability and service life of the cable; 2. Suppressing the skin effect: For the alternating current in conductor 1, the current density near the surface of conductor 1 is greater than the current density inside conductor 1. As the current frequency increases, the skin effect increases the resistance of conductor 1 and reduces the inductance.

[0036] The non-woven fabric layer 2 completely covers the plurality of conductors 1; a metal composite tape shielding layer 9 is disposed outside the non-woven fabric layer 2;

[0037] Each conductor 1 is coated with an insulating layer 3, which is made of nitrile composite soft insulation or PE soft insulation; PE soft insulation: excellent electrical properties; for example, ordinary nitrile insulation 1mm can reach a breakdown level of 3000V, and PE soft insulation only needs 0.6-0.8mm; insulation color: color representation, in accordance with 227IEC (brown, blue, black, yellow-green) black numbers and white numbers, in accordance with EN50214 standards (please indicate if it contains yellow-green grounding wire);

[0038] A bulletproof wire filling layer 4 is provided between the non-woven fabric layer 2 and the conductor 1; a real center wire is filled as much as possible in the center of the cable according to the number of cores and the space of the cross area of ​​each core wire, instead of filling with some fillers or garbage core wires made of waste plastic as usual. This structure can effectively protect the stranded wire structure and prevent the stranded wire from moving freely to the center area of ​​the cable;

[0039] The non-woven fabric layer 2 is coated with a braided shielding layer 5; an armor-type extruded inner sheath 10 is also provided between the metal composite tape shielding layer 9 and the braided shielding layer 5, which is wrapped with a polyester tape, and can effectively prevent the insulation layer 3 from adhering to the inner sheath during the use of the cable; the braided shielding layer 5 is tightly woven outside the inner sheath 10 with an optimized braiding angle, and a loose braided tape will reduce the EMC protection capability and the braided shielding layer 5 will also fail quickly due to the breakage of the shielding. The tightly woven braided shielding layer 5 has the function of resisting torsion, and also increases the tensile strength and bending resistance during the accompanying process;

[0040] The braided shielding layer 5 is woven from bare copper or tinned copper wire, with a shielding density of >80%; the characteristics of tinned copper wire: 1. Copper and manganese are in direct contact with rubber, which can accelerate the aging of rubber products. Shielding generally uses tinned copper wire to achieve the effect of inhibiting rubber aging; 2. Tinned copper wire can greatly facilitate the welding of cable joints;

[0041] An outer sheath layer 6 is provided outside the braided shielding layer 5 and is made of imported polyurethane. The characteristics of the polyurethane material are as follows: 1) It can keep the cable in good flexibility and bending performance during frequent movement, twisting and laying. At the same time, when scratched or rubbed by sharp steel components, it can maintain the mechanical properties of the cable insulation such as tear resistance and abrasion resistance; 2) The use environment conditions are complex, such as sunlight exposure, boiling water, contact with muddy water, machine oil, acid-base liquids, etc., and it is required to have certain weather resistance, oil resistance and solvent resistance; 3) It has good processing performance, is not easy to bulge during the cable production process, and has a high breakdown voltage level. The outer sheaths made of different modified mixed materials have different functions, such as anti-UV function, high and low temperature resistance function, oil resistance and cost optimization. The characteristics of the outer sheath are high abrasion resistance and will not adhere to anything. The function of the outer sheath must be highly flexible but also have a supporting function, and it is formed by high-pressure extrusion molding.

[0042] Embodiment 2

[0043] Appendix Figure 2 An industrial trailing cable according to the present invention includes a plurality of conductors 1 arranged in a row and a non-woven fabric layer 2. The plurality of conductors 1 arranged in a row are made of oxygen-free copper wires by a stranded structure with a small pitch. The stranded structure of the conductor 1 is made by the way of bunch stranding. Specifically, the stranding structure must be wound around a stable tensile center with the best lay length. However, due to the application of the insulating material, the stranding structure should be designed according to the motion state. Starting from 12 core wires, the bunch stranding method should be adopted. The plurality of conductors 1 arranged in a row are mixed by communication line conductors 7 and power line conductors 8.

[0044] Specifically, the conductor 1 is stranded with oxygen-free copper wires of 0.10 mm with a small pitch and meets the VDE0295 CLASS5 standard. The oxygen-free copper wire has the following characteristics: First, the oxygen content is less than three ten-thousandths to prevent the cable core from embrittling and breaking during frequent movement, which will cause the resistance of the conductor 1 to increase. According to the energy formula: Q = I^2RT, the resistance increases per unit time and the heat rises, which will reduce the safety stability and service life of the cable; Second, it suppresses the skin effect: for the alternating current in the conductor 1, the current density near the surface of the conductor 1 is greater than the current density inside the conductor 1. As the current frequency increases, the skin effect causes the resistance of the conductor 1 to increase and the inductance to decrease.

[0045] The non-woven fabric layer 2 completely wraps multiple conductors 1; an insulating layer 3 is wrapped around each conductor 1, which is made of nitrile composite soft insulation or PE soft insulation; PE soft insulation: excellent electrical performance; for example, ordinary nitrile insulation can reach a breakdown voltage level of 3000V at 1mm, while only 0.6 - 0.8mm of PE soft insulation is required; insulation color coding: indicated by colors, conforming to 227IEC (brown, blue, black, yellow-green), with black numbers and white numbering, conforming to the EN50214 standard (such as including a yellow-green ground wire);

[0046] A bulletproof silk filling layer 4 is provided between the non-woven fabric layer 2 and the conductor 1; in the center of the cable, there should be a real centerline filling as much as possible according to the number of cores and the space in the cross-sectional area of each core wire intersection, rather than filling with some filler or waste plastic made junk core wires as in the usual case. This structure can effectively protect the stranded wire structure and prevent the stranded wires from wandering into the central area of the cable;

[0047] The non-woven fabric layer 2 is externally wrapped with a braided shielding layer 5; the braided shielding layer 5 is woven from bare copper or tinned copper wires, and the shielding density > 80%; Characteristics of tinned copper wires: First, copper and manganese directly contact with rubber, which can accelerate the aging of rubber products. Generally, tinned copper wires are used for shielding to achieve the effect of inhibiting rubber aging; Second, tinned copper wires can greatly facilitate the welding of cable joints;

[0048] An outer sheath layer 6 is provided outside the braided shielding layer 5, which is made of imported polyurethane; Characteristics of polyurethane materials: 1) It can keep the cable in good flexibility and bending performance during frequent movement, twisting, and laying; at the same time, when scratched or rubbed by sharp steel components, it can maintain the mechanical properties such as insulation tear resistance and abrasion resistance of the cable; 2) The use environment conditions are complex, such as sunlight exposure, boiling water, contact with muddy water, machine oil, acid-base liquids, etc., requiring certain weather resistance, oil resistance, and solvent resistance; 3) Good processing performance, not easy to bulge during the cable production process, and high breakdown voltage level; The outer sheath made of different modified mixed materials has different functions, such as anti-UV function, high and low temperature resistance function, oil resistance, and cost optimization; The characteristics of the outer sheath are high wear resistance and will not adhere to anything. The function of the outer sheath must be highly flexible but also have a supporting function, and it is formed by high-pressure extrusion molding.

[0049] Multiple petroleum jelly-coated steel wires 11 are arranged in an array inside the outer sheath layer 6 to enhance the strength of the cable.

[0050] The application scope of the industrial trailing cable of this application:

[0051] Suitable for dry or humid indoor environments, it can be installed under free continuous reciprocating motion without strong stress relief or forced guidance. It is suitable for frequent bending in industrial use environments, such as woodworking machinery, machine tool processing equipment, logistics conveying systems, crane sites, etc. It has good electromagnetic shielding and anti-interference performance, and can ensure stable output and reception of signals and electrical energy.

[0052] The outer sheath layer 6 of polyether-based polyurethane and the insulation layer 3 of PEEK core wire make it suitable for use in cable carriers, especially in extremely harsh operating environments and in the presence of corrosive coolants and lubricants.

[0053] When the moving stroke exceeds 50 meters, it is recommended to select a cable with an inner sheath layer 10. The characteristics of the cable with an inner sheath layer 10 are as follows:

[0054] Waterproof, oil-proof, cold-resistant, ultraviolet-resistant, wear-resistant, flame-retardant, with a bending life of more than 5 million times, suitable for fast-moving occasions.

[0055] An industrial trailing cable of the present application has been carefully designed for each component to meet the continuous back-and-forth movement of the cable. Through the design of the conductor 1, non-woven fabric layer 2, insulation layer 3, bulletproof wire filling layer 4, braided shielding layer 5, and outer sheath layer 6, etc., it ensures stable electrical insulation performance during millions of reciprocating movements, reduces the short circuit / break or breakdown faults of normal power supply caused by fatigue cracking of the cable, ensures that the stranded wire structure will not be scattered, the positions of each core wire are fixed during movement, and will not cause extrusion and serious friction to other core wires. The tightly woven braided shielding layer 5 has an anti-torsion effect, and at the same time increases the anti-tensile and flexural resistance capabilities during the trailing process, enabling the cable to meet the requirements of anti-tensile and non-breaking of the core wire, meeting the market demand, and giving the enterprise good market competitiveness.

[0056] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An industrial trailing cable, characterized in that: It includes a plurality of conductors arranged and a non-woven fabric layer; The non-woven fabric layer completely covers the plurality of conductors; Each of the conductors is covered with an insulating layer; An aramid fiber filling layer is provided between the non-woven fabric layer and the conductors; The non-woven fabric layer is covered with a braided shielding layer; An outer sheath layer is provided outside the braided shielding layer.

2. The industrial trailing cable according to claim 1, characterized in that: The plurality of conductors arranged are made of oxygen-free copper wires with a small pitch stranding structure.

3. The industrial trailing cable according to claim 2, characterized in that: The stranding structure of the conductors is made by bunch stranding.

4. The industrial trailing cable according to claim 1, wherein: The plurality of conductors arranged are all formed by a communication line conductor array.

5. An industrial trailing cable according to claim 1, characterized in that: The plurality of conductors arranged are composed of a mixture of communication line conductors and power line conductors.

6. An industrial trailing cable according to claim 1, characterized in that: A metal composite tape shielding layer is provided outside the non-woven fabric layer.

7. The industrial trailing cable according to claim 6, characterized in that: An inner sheath layer formed by armoire extrusion is further provided between the metal composite tape shielding layer and the braided shielding layer.

8. An industrial trailing cable as claimed in claim 1, wherein: The braided shielding layer is woven from bare copper or tinned copper wires.

9. An industrial trailing cable according to claim 1, characterized in that: A plurality of steel wires coated with petroleum jelly are arranged in an array inside the outer sheath layer.

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