Lightweight flexible reel cable

Abstract

The utility model discloses a lightweight flexible reel cable, which belongs to the technical field of cables and comprises an outer sheath layer, a torsion-resistant reinforcing layer, an inner sheath layer and a cable core from outside to inside. The cable core comprises a plurality of main cable cores and a plurality of ground cable cores; the surface of the torsion-resistant reinforcing layer is coated with an epoxy resin coating; each of the main cable core and the ground cable core comprises an insulating layer and a conductor from outside to inside. According to the utility model, the light weight requirement is fully considered in the arrangement of each layer, the weight of the reel cable is reduced from multiple aspects, and the normal operation of equipment and the stable performance of the cable are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a lightweight flexible reel cable. Background Art

[0002] Drum cables are used in reels, transport machinery, and conveyors. They can also be used as reels and towing cables in drag chain systems. Drum cables retract and extend guided by a tow shaft or other similar device. They can be installed in dry or humid indoor environments, in humid industrial environments, or outdoors. These cables often require a small bend radius. Existing drum cables, due to their excessive weight, can negatively impact the normal operation of equipment and the performance of the cable itself, including wear, deformation, material fatigue, and unstable operation. These cables fail to meet the flexural, abrasion-resistant, lightweight, and waterproof requirements required for practical use. Utility Model Content

[0003] The purpose of the present utility model is to provide a lightweight flexible reel cable, which is used to solve at least one aspect of the technical problems mentioned in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A lightweight flexible reel cable, comprising, from the outside to the inside, an outer sheath layer, a torsion-resistant reinforcement layer, an inner sheath layer, and a cable core;

[0006] The cable core includes a plurality of main cable cores and a plurality of ground cable cores;

[0007] The surface of the torsion-resistant reinforcement layer is coated with an epoxy resin coating;

[0008] Epoxy resin coating has excellent mechanical properties, water resistance and corrosion resistance, and is suitable for various harsh environments. It can maintain a stable waterproof effect under harsh environmental conditions, thereby preventing the inside of the cable from being corroded by moisture.

[0009] The main cable core and the ground cable core both include an insulation layer and a conductor from the outside to the inside.

[0010] As a further solution of the present invention, the outer sheath layer and the inner sheath layer are both thermoplastic polyurethane rubber layers.

[0011] Thermoplastic polyurethane rubber is a multifunctional elastomeric material that combines the properties of rubber and plastic. It not only has the high elasticity and good tensile properties of rubber, but also the mechanical strength of plastic. It has excellent wear resistance and tear resistance, and has good resistance to industrial oils, chemicals, and ozone, which enables it to remain stable in various harsh environments. It is also a lightweight and environmentally friendly material that meets the needs of lightweight and environmental protection.

[0012] As a further solution of the present invention, the density of the thermoplastic polyurethane rubber layer is 0.15 g / cm 3 ~0.25g / cm 3 .

[0013] The density of the thermoplastic polyurethane rubber layer has an important influence on its performance. A higher density can improve its wear resistance and strength, but it will increase the weight of the cable. The density setting needs to be considered comprehensively in terms of strength and weight.

[0014] As a further solution of the present invention, the anti-torsion reinforcement layer is an aramid fiber braided layer.

[0015] Aramid fiber has ultra-high strength, high modulus and excellent high-temperature resistance. The aramid fiber braid significantly increases the rigidity and strength of the cable, thereby improving its tensile and torsional resistance. Due to the lightweight characteristics of aramid fiber, the use of aramid fiber can significantly reduce the weight of the cable.

[0016] As a further solution of the present invention, 7 to 9 yarns are used on both the front and back sides when the aramid fiber is woven.

[0017] Increasing the number of yarns in the aramid fiber braid generally results in a tighter and smoother surface, which improves its wear resistance and mechanical properties, but also increases production cost and complexity.

[0018] As a further solution of the present invention, the diameter of the yarn is 1900D to 2100D.

[0019] Aramid fibers with larger yarn diameters are thicker and have higher tensile strength, which means better performance in terms of impact resistance, crack resistance and durability, but they also tend to be heavier.

[0020] As a further solution of the present invention, the braiding pitch of the yarn is 120 mm to 130 mm.

[0021] Changes in braiding pitch affect the contact and arrangement between fibers, thereby affecting the overall structure and performance of the braided layer, including mechanical strength, wear resistance, high temperature resistance and corrosion resistance.

[0022] As a further solution of the present invention, the insulating layer is an EPDM rubber layer.

[0023] EPDM rubber has excellent aging properties such as weather resistance, ozone resistance, heat resistance, water vapor resistance, UV resistance and radiation resistance. It can be used for a long time in extremely harsh environments and has excellent electrical insulation properties and corona resistance.

[0024] As a further solution of the present invention, the twisting pitch ratio of the main cable core and the ground cable core is 8:1 to 10:1.

[0025] The twist pitch ratio, the ratio of pitch to outer diameter, determines the cable's flexibility and structural stability. A smaller pitch ratio makes the cable more flexible, but also results in a denser twist, which increases production costs and reduces conductivity. Conversely, a larger pitch ratio, while increasing cable flexibility, can also lead to structural instability. This is especially true in cables with large cross-sections, where excessively large pitches can reduce flexibility and compromise stability.

[0026] As a further solution of the present invention, the diameter of the main cable core is greater than the diameter of the ground cable core.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The inner and outer sheath layers of the utility model are both made of thermoplastic polyurethane rubber layers, which have high elasticity and good tensile properties, excellent wear resistance and tear resistance, and can adapt to various harsh environments while being lighter than other sheath materials.

[0029] 2. The torsion-resistant reinforcement layer of the utility model is an aramid fiber braided layer, which has ultra-high strength, high modulus and excellent high temperature resistance, significantly increasing the rigidity and strength of the cable, thereby improving its tensile strength and torsional resistance, and significantly reducing the weight of the cable.

[0030] 3. The utility model fully considers the lightweight requirements in the setting of each layer, reduces the weight of the reel cable from multiple aspects, and ensures the normal operation of the equipment and the stable performance of the cable itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 A cross-sectional view of a lightweight, flexible reel cable.

[0033] In the figure: 100, outer sheath layer; 110, epoxy resin coating; 120, torsion reinforcement layer; 130, inner sheath layer; 140, insulation layer; 150, conductor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0036] The present invention is limited only by the claims, their full scope, and their equivalents. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] See also Figure 1 In an embodiment of the present invention, a lightweight flexible reel cable comprises, from the outside to the inside, an outer sheath layer 100, a torsion reinforcement layer 120, an inner sheath layer 130, and a cable core;

[0039] The cable core includes 3 main cable cores and 3 ground cable cores;

[0040] The surface of the torsion reinforcement layer 120 is coated with an epoxy resin coating 110;

[0041] Epoxy resin coating has excellent mechanical properties, water resistance and corrosion resistance, and is suitable for various harsh environments. It can maintain a stable waterproof effect under harsh environmental conditions, thereby preventing the inside of the cable from being corroded by water. Compared with waterproof settings such as water-absorbing and swelling water-blocking tapes, the mass of the waterproof layer is greatly reduced.

[0042] In this embodiment, the epoxy resin coating used is a composite coating of phenolic epoxy resin and epoxy resin disclosed in the academic journal Materials Protection, article number 1001-1560(2015)09-0041-04. The composite coating has better water barrier properties than ordinary epoxy resin coatings.

[0043] The main cable core and the ground cable core both include an insulation layer and a conductor from the outside to the inside.

[0044] The main line is responsible for transmitting electricity, while the ground wire's primary function is to divert current to the earth, preventing it from flowing through other parts and causing danger. If a leakage occurs in a circuit, the ground wire diverts the current to the earth. Because the ground wire's resistance is typically very low, it can quickly divert the leakage current, preventing it from passing through the human body and thus preventing electric shock accidents.

[0045] In this embodiment, the conductors used for the main line and the ground line are both aluminum alloy conductors. Aluminum alloy conductors have good electrical conductivity, high strength and corrosion resistance, high flexibility and elongation, and lower density than other common conductive metals such as copper and silver. This means that the use of aluminum alloy can reduce the overall weight of the product and is suitable for the lightweight design of the present invention.

[0046] As a further solution of the present invention, the outer sheath layer 100 and the inner sheath layer 130 are both thermoplastic polyurethane rubber layers.

[0047] Thermoplastic polyurethane rubber is a multifunctional elastomeric material that combines the properties of rubber and plastic. It not only has the high elasticity and good tensile properties of rubber, but also the mechanical strength of plastic. It has excellent wear resistance and tear resistance, and has good resistance to industrial oils, chemicals, and ozone, which enables it to remain stable in various harsh environments. It is also a lightweight and environmentally friendly material that meets the needs of lightweight and environmental protection.

[0048] As a further solution of the present invention, the density of the thermoplastic polyurethane rubber layer is 0.20 g / cm 3 .

[0049] The density of the thermoplastic polyurethane rubber layer has an important influence on its performance. A higher density can improve its wear resistance and strength, but it will increase the weight of the cable. The density setting needs to be considered comprehensively in terms of strength and weight.

[0050] As a further solution of the present invention, the torsion-resistant reinforcement layer is an aramid fiber braided layer.

[0051] Aramid fiber has ultra-high strength, high modulus and excellent high-temperature resistance. The aramid fiber braid significantly increases the rigidity and strength of the cable, thereby improving its tensile and torsional resistance. Due to the lightweight characteristics of aramid fiber, the use of aramid fiber can significantly reduce the weight of the cable.

[0052] As a further solution of the present invention, 7 to 9 yarns are used on both the front and back sides when the aramid fibers are woven.

[0053] Increasing the number of yarns in the aramid fiber braid generally results in a tighter and smoother surface, which improves its wear resistance and mechanical properties, but also increases production cost and complexity.

[0054] As a further solution of the present invention, the diameter of the yarn is 2000D.

[0055] Aramid fibers with larger yarn diameters are thicker and have higher tensile strength, which means better performance in terms of impact resistance, crack resistance and durability, but they also tend to be heavier.

[0056] As a further solution of the present invention, the braiding pitch of the yarn is 125 mm.

[0057] Changes in braiding pitch affect the contact and arrangement between fibers, thereby affecting the overall structure and performance of the braided layer, including mechanical strength, wear resistance, high temperature resistance and corrosion resistance.

[0058] As a further solution of the present invention, the insulating layer 140 is an EPDM rubber layer.

[0059] EPDM rubber has excellent aging properties such as weather resistance, ozone resistance, heat resistance, water vapor resistance, UV resistance and radiation resistance. It can be used for a long time in extremely harsh environments and has excellent electrical insulation properties and corona resistance.

[0060] As a further solution of the present invention, the twisting pitch ratio of the main cable core and the ground cable core is 9:1.

[0061] The twist pitch ratio, the ratio of pitch to outer diameter, determines the cable's flexibility and structural stability. A smaller pitch ratio makes the cable more flexible, but also results in a denser twist, which increases production costs and reduces conductivity. Conversely, a larger pitch ratio, while increasing cable flexibility, can also lead to structural instability. This is especially true in cables with large cross-sections, where excessively large pitches can reduce flexibility and compromise stability.

[0062] As a further solution of the present invention, the diameter of the main cable core is greater than the diameter of the ground cable core.

[0063] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A lightweight flexible reel cable, characterized in that: From the outside to the inside, it includes an outer sheath layer (100), a torsion-resistant reinforcement layer (120), an inner sheath layer (130), and a cable core; The cable core includes a plurality of main cable cores and a plurality of ground cable cores; The surface of the torsion-resistant reinforcement layer (120) is coated with an epoxy resin coating (110); The main cable core and the ground cable core both comprise an insulating layer (140) and a conductor (150) from the outside to the inside.

2. A lightweight flexible reel cable according to claim 1, characterized in that: The outer sheath layer (100) and the inner sheath layer (130) are both thermoplastic polyurethane rubber layers.

3. A lightweight flexible reel cable according to claim 2, characterized in that: The density of the thermoplastic polyurethane rubber layer is 0.15 g / cm 3 ~0.25g / cm 3 .

4. A lightweight flexible reel cable according to claim 1, characterized in that: The torsion-resistant reinforcement layer (120) is an aramid fiber braided layer.

5. A lightweight flexible reel cable according to claim 4, characterized in that: When the aramid fiber is woven, 7 to 9 yarns are used on both the front and back sides.

6. A lightweight flexible reel cable according to claim 5, characterized in that: The diameter of the yarn is 1900D to 2100D.

7. A lightweight flexible reel cable according to claim 5, characterized in that: The braiding pitch of the yarn is 120 mm to 130 mm.

8. A lightweight flexible reel cable according to claim 1, characterized in that: The insulating layer (140) is an EPDM rubber layer.

9. A lightweight flexible reel cable according to claim 1, characterized in that: The twisting pitch ratios of the main cable core and the ground cable core are both 8:1 to 10:

1.

10. A lightweight flexible reel cable according to claim 9, characterized in that: The diameter of the main cable core is greater than the diameter of the ground cable core.

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