Waterproof, rat-proof and termite-proof cable

Abstract

The utility model relates to the technical field of cables, and specifically provides a cable comprising a plurality of cable core main bodies and a coating layer coating the cable core main bodies, the coating layer comprises a first insulating layer, a sheath layer, a metal net reinforcing layer, a waterproof layer and a rat-proof layer from inside to outside in sequence, and the first insulating layer, the sheath layer, the metal net reinforcing layer, the waterproof layer and the rat-proof layer are arranged on the outer side of the cable core main bodies. The rat-proof layer is spirally wound on the outer side of the waterproof layer, and every two adjacent layers are oppositely and spirally wound in a crossed mode; the cable has good waterproof and anti-rat and anti-termite effects, the use strength of the cable is improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a waterproof, rat-proof and ant-proof cable. Background Art

[0002] At present, most conventional optical cables at home and abroad are composed of cable core, braided isolation layer and sheath layer. This kind of optical cable is easy to use and has a wide range of applications. However, the PE and PVC flame-retardant materials commonly used in electrical and optical cables have poor corrosion resistance to termites, mice and other organisms. The cables and optical cables made of this material as the outer sheath do not have the function of anti-termite and anti-rat. When they are laid in areas with many mice and termites, the cables and optical cables will be eaten by mice and termites, which may cause power outages and communication interruptions in serious cases. In particular, with the development of electricity, communications and electricity consumption, there is a trend for urban or railway optical cable lines to shift from high-altitude erection to underground burial, which is more susceptible to damage from mice biting and ants, resulting in frequent accidents such as short circuits, power outages, control malfunctions, communications, and signal interruptions, causing great harm to society and personal property.

[0003] In order to overcome the problems of rat bites and ant infestation, the current main method used at home and abroad is to cover the outer surface of the optical cable with a drug-containing anti-rat and anti-ant sheath layer. When the sheath layer is mechanically damaged due to transportation, underground buried construction, etc., rats and ants will gnaw and corrode along the damaged areas, and it will not play a fundamental protective role. Utility Model Content

[0004] The utility model aims to provide a waterproof and rat-proof cable, which has good waterproof and rat-proof effects and improves the service strength and life of the cable.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A waterproof, rat-proof and ant-proof cable comprises a plurality of wire core bodies and a coating layer coated on the outer side of the wire core bodies, wherein the coating layer comprises, from the inside to the outside, a first insulating layer, a sheath layer, a metal mesh reinforcement layer, a waterproof layer and a rat-proof layer; the rat-proof layer is spirally wound on the outer side of the waterproof layer.

[0007] Furthermore, the rodent-proof layer is provided with multiple layers, and two adjacent layers are arranged to be cross-wound in opposite spirals.

[0008] Furthermore, the rodent-proof layer is glass fiber, and multiple layers of glass fiber are cross-laminated.

[0009] Furthermore, a plurality of wear-resistant protrusions are arranged on the surface of the rodent-proof layer.

[0010] Furthermore, the wire core body includes a plurality of twisted copper conductors, a second insulating layer and a metal protective layer.

[0011] Furthermore, the wire core bodies are evenly arranged in plurality, and reinforcing ribs are arranged at the centers of the plurality of wire core bodies.

[0012] Furthermore, the reinforcing ribs are made of flame retardant material.

[0013] Furthermore, flame-retardant silicone rubber or flame-retardant filling rope is filled between the first insulating layer and the wire core body and the reinforcing ribs.

[0014] Furthermore, the sheath layer is a flame retardant polyolefin sheath.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] The utility model has reasonable design and simple structure. Multiple wire core bodies are wrapped layer by layer in the form of layer-by-layer coating to exert good waterproof and rat-proof and ant-proof effects. More importantly, the utility model is provided with a rat-proof layer on the outermost side and is wound in a spiral shape. Preferably, the rat-proof layer is provided with multiple layers, and the adjacent two layers are cross-wound in opposite spiral shapes, so that the strength of the rat-proof layer is higher and it is not easy to be bitten off. Preferably, a plurality of metal wires can also be passed through the rat-proof layer, so that the strength of the rat-proof layer is higher and it has a better effect of preventing rats and ants from biting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a waterproof, rat-proof and ant-proof cable provided in an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of a rodent-proof layer provided in an embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of a wire core body provided in an embodiment of the utility model.

[0021] Icon: 1-first insulation layer, 2-sheath layer, 3-metal mesh reinforcement layer, 4-waterproof layer, 5-rat-proof layer, 6-wire core body, 61-copper conductor, 62-second insulation layer, 63-metal protective layer, 7-reinforcement ribs, 8-flame retardant silicone rubber, 9-wear-resistant protrusions. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Example 1

[0024] A waterproof, rat-proof and ant-proof cable comprises a plurality of wire core bodies 6 and a coating layer coated on the outside of the wire core bodies 6, wherein the coating layer comprises, from the inside to the outside, a first insulating layer 1, a sheath layer 2, a reinforcement layer, a waterproof layer 4 and a rat-proof layer 5; the rat-proof layer 5 is spirally wound on the outside of the waterproof layer 4.

[0025] The cable of the utility model utilizes the form of layer-by-layer wrapping to wrap multiple core bodies 6 layer by layer to exert good waterproof and rat-proof and ant-proof effects. More importantly, the utility model is provided with a rat-proof layer 5 on the outermost side and is wound in a spiral shape. Preferably, the rat-proof layer 5 is provided with multiple layers, and the two adjacent layers are cross-wound in opposite spiral shapes, so that the strength of the rat-proof layer 5 is higher and it is not easy to be bitten off. Preferably, a plurality of metal wires can also be passed through the rat-proof layer 5, so that the strength of the rat-proof layer 5 is higher and it has a better effect of preventing rats and ants from biting.

[0026] In this embodiment, the rat-proof layer 5 is glass fiber, which not only improves the waterproof performance and tensile strength of the cable, but also, if bitten by rats and ants, the glass fiber fragments will pierce the mouth of the rats and ants, making the rats and ants afraid of the cable, thereby preventing rats and ants from biting, protecting the cable from damage, and greatly increasing the service life of the cable; preferably, multiple layers of glass fibers are cross-stacked to make the strength of the rat-proof layer 5 higher.

[0027] In this embodiment, a plurality of wear-resistant protrusions 9 are provided on the surface of the rat-proof layer 5, which makes it difficult for rats and ants to find a suitable biting angle, thereby increasing the difficulty of biting.

[0028] In this embodiment, the core body 6 includes a plurality of twisted copper conductors 61, a second insulating layer 62 and a metal protective layer 63; wherein, the first insulating layer 1 and the second insulating layer 62 can be selected from plastic insulating materials and rubber insulating materials, such as polyethylene (PE), cross-linked polyethylene (XLPE), polyvinyl chloride (PVC), etc.; the metal protective layer 63 can be selected from aluminum.

[0029] In this embodiment, the wire core bodies 6 are evenly arranged in plurality, and reinforcing ribs 7 are arranged in the centers of the plurality of wire core bodies 6; thereby providing a certain supporting strength and toughness for the cable center, which can prevent the wire core bodies 6 from being entangled with each other.

[0030] In this embodiment, the reinforcing ribs 7 are made of flame-retardant material, so that the cable has certain flame-retardant properties.

[0031] In this embodiment, flame-retardant silicone rubber 8 or flame-retardant filling rope is filled between the first insulating layer 1 and the wire core body 6 and the reinforcing rib 7, so that the placement of the wire core body 6 is more stable, the looseness is reduced, and a certain flame-retardant effect can be exerted.

[0032] In this embodiment, the sheath layer 2 is a flame-retardant polyolefin sheath, which plays a protective and waterproof role.

[0033] In other embodiments, a shielding layer is further included, which is arranged on the outside of the first insulating layer 1, so that the generated electromagnetic field can be shielded in the cable and the surrounding components are protected from electromagnetic interference; in addition, local discharge between the insulating layer and the sheath can be avoided, thereby improving the electrical performance and service life of the cable.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof, rat-proof and ant-proof cable, characterized in that: It comprises a plurality of wire core bodies and a coating layer coated on the outer side of the wire core bodies, wherein the coating layer comprises a first insulating layer, a sheath layer, a metal mesh reinforcement layer, a waterproof layer and a rodent-proof layer in sequence from the inside to the outside; the rodent-proof layer is spirally wound on the outer side of the waterproof layer.

2. The waterproof, rat-proof and ant-proof cable according to claim 1, characterized in that: The rat-proof layer is provided with multiple layers, and two adjacent layers are arranged to be cross-wound in opposite spiral shapes.

3. The waterproof, rat-proof and ant-proof cable according to claim 1 or 2, characterized in that: The rat-proof layer is made of glass fiber, and multiple layers of glass fiber are cross-laminated.

4. The waterproof, rat-proof and ant-proof cable according to claim 3, characterized in that: The surface of the rodent-proof layer is provided with a plurality of wear-resistant protrusions.

5. The waterproof, rat-proof and ant-proof cable according to claim 1, characterized in that: The wire core body comprises a plurality of twisted copper conductors, a second insulating layer and a metal protective layer.

6. The waterproof, rat-proof and ant-proof cable according to claim 5, characterized in that: The wire core bodies are evenly arranged in plurality, and reinforcing ribs are arranged at the centers of the plurality of wire core bodies.

7. The waterproof, rat-proof and ant-proof cable according to claim 6, characterized in that: The reinforcing ribs are made of flame retardant material.

8. The waterproof, rat-proof and ant-proof cable according to claim 7, characterized in that: Flame-retardant silicone rubber or flame-retardant filling rope is filled between the first insulating layer and the wire core body and the reinforcing ribs.

9. The waterproof, rat-proof and ant-proof cable according to claim 1, characterized in that: The sheath layer is a flame retardant polyolefin sheath.

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