CN218826309U - Physical rat-proof termite-proof cable - Google Patents

Abstract

The utility model discloses a physics protection against rodents termite prevention cable, including conductor (8), the outside of conductor (8) is provided with oversheath (3), the inboard and the outside of oversheath (3) all are provided with the protective layer that prevents the animal harm, and wherein, the outer protective layer outside still is provided with sacrificial layer (1). The utility model is provided with the protective layers on the inner side and the outer side of the outer sheath (3) respectively, thus achieving the purpose of double protection, effectively preventing the damage of mice and termites, and greatly improving the protection effect compared with the prior cable; and a sacrificial layer (1) is also arranged, so that the protective layer can be protected from being damaged in the installation and laying process, and the protective performance of the cable is further improved.

Description

Physical rat-proof termite-proof cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a physics protection against rodents termite proof cable.

Background

In the aspects of industry and traffic, the damage of mice to cables is mainly shown in the aspects of power failure, communication interruption and the like caused by biting the cables, and the economic loss caused by accidents can reach tens of thousands of yuan or even tens of thousands of yuan. For example, in warehouses, ships and trains, cases that rats bite bad goods and luggage are frequently seen, and more importantly, serious accidents caused by failure of a steering engine and stop of navigation equipment due to the fact that rats bite bad communication wires occur frequently. For the harm of ants, although the inner and outer protective layers of the cable are not food materials of ants, the inner and outer protective layers can damage the cable protective layer when searching for food, and the cable protective layer can be bitten through, so that the cable is insulated and damped to be damaged. Particularly in some forest areas and mountain areas, the cable is abundant in rainwater, suitable for rats and ants to breed and has little smoke, and brings great threat to the safe and stable operation of the cable, so that the possibility of preventing rats and ants from biting is fully considered during the design and production of the cable.

The cable body is protected against rats and ants by a chemical method and a physical method, the chemical method is to add a repellent, such as capsaicin, into a sheath material of the cable to drive away the rats and the ants, or toxic substances are added to poison the rats and the ants to die, but the chemical method can cause environmental pollution and health injury to producers; the physical method for preventing rats and ants is to prevent rats and ants from being damaged by the hardness of the cable protection layer material or to prevent rats and ants from being bitten by the mouth by adopting the cable protection layer with higher surface smoothness. However, the existing cable has poor rat and termite prevention effect, is easy to be damaged by rats and termites, and has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a physics protection against rodents termite prevention cable to solve the technical problem that current cable is destroyed by mouse and termite easily.

The utility model aims at adopting the following technical scheme to realize: the utility model provides a physics protection against rodents termite-proof cable, includes the conductor, the outside of conductor is provided with the oversheath, the inboard and the outside of oversheath all are provided with the protective layer that prevents the animal harm, wherein, the outer protective layer outside still is provided with the sacrificial layer.

Furthermore, the conductor comprises one or more conductors, and an insulating layer is arranged on the outer side of each conductor.

Further, a filling layer is arranged between the conductor and the outer sheath.

Furthermore, a copper strip armor for preventing animals from being damaged is arranged between the filling layer and the outer sheath.

Furthermore, a wrapping tape is arranged between the copper strip armor and the filling layer.

Further, a nylon layer for preventing animal damage is arranged between the sacrificial layer and the outer sheath.

The beneficial effects of the utility model reside in that: the utility model is provided with the copper strip armor and the nylon layer on the inner side and the outer side of the outer sheath respectively, thereby achieving the purpose of double protection, effectively preventing the damage of mice and termites, and greatly improving the protection effect compared with the prior cable; the utility model discloses still be provided with the sacrificial layer in the outside on nylon layer, can lay the in-process protection nylon layer in the installation and not destroyed, further improved the barrier propterty of cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

in the figure, 1-sacrificial layer, 2-nylon layer, 3-outer sheath, 4-copper strip armor, 5-wrapping tape, 6-filling layer, 7-insulating layer and 8-conductor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

referring to fig. 1, the physical rat and termite preventing cable comprises a conductor 8, wherein an outer sheath 3 is arranged outside the conductor 8, protective layers for preventing animals from being damaged are arranged on the inner side and the outer side of the outer sheath 3, and a sacrificial layer 1 is further arranged on the outer side of the outer protective layer.

In this embodiment, five conductors 8 are provided, and an insulating layer 7 is further disposed outside each conductor 8. Further, a filling layer 6 is disposed between the conductors 8 and the outer sheath 3, and the filling layer 6 is used for filling the gap between the conductors 8. It is conceivable that the number of conductors 8 may be increased or decreased depending on the actual requirements in the actual application.

In this embodiment, a copper strip armor 4 for preventing animal damage is arranged between the filling layer 6 and the outer sheath 3, and the copper strip armor 4 is a brass armor and can play a role of secondary protection.

In this embodiment, a tape 5 is further disposed between the copper tape armor 4 and the filling layer 6.

In this embodiment, a nylon layer 2 for preventing animal damage is disposed between the sacrificial layer 1 and the outer sheath 3, and the nylon layer 2 is made of an extruded nylon sheath material, so as to prevent rats and termites from damaging the cable. Further, the main function of the sacrificial layer 1 is to protect the nylon layer from being damaged during installation and laying of the cable.

The physical rat-proof and termite-proof cable mainly adopts a nylon sheath material extruded to realize the rat-proof and termite-proof functions of the cable, the price is extremely high due to the particularity of the nylon sheath material, whether the process can normally produce the cable greatly affects the cost, so that each ring section needs to be strictly controlled during production, and the waste of extrusion, peeling and other unqualified quality is reduced.

In order to guarantee the normal completion of the extrusion process of the physical rat-proof termite-proof cable nylon sheath, the utility model discloses need satisfy following technical requirement in the production process:

controlling the cable core in the cabling process: the cable core roundness is guaranteed during low-voltage cable stranding, the filling is adjusted according to actual production conditions during stranding, the outer diameter cannot exceed the process range, and the stranding pitch and the cable core outer diameter are controlled according to the following table:

the medium-voltage cable cabling filling adopts fan-shaped filling strips, so that the roundness of a cable core during cabling is ensured; the cabling pitch and cable core outer diameter are controlled as follows:

and (3) medium-voltage cable extrusion cushion layer control: the surface of the cushion layer is required to be flat and smooth; the material during extrusion is H-90 polyvinyl chloride sheath material, and the thickness range strictly meets the process requirements; during production, the vacuum pumping is carried out, and the cushion layer and the cable core are tightly combined.

Controlling the copper strip armor layer: in order to prevent the copper strip armor layer from warping and affecting the production of the sheath, the steel strip armor clearance rate needs to be controlled, the control range is 38% -42%, and a layer of non-woven fabric is wrapped on the copper strip armor layer.

Controlling the outer sheath of the cable: the thickness of the cable outer sheath strictly meets the process requirements, and the cable outer sheath is vacuumized during production to ensure that the sheath and the armor layer are tightly combined.

And (3) extrusion control of a nylon sheath layer: the material adopts black nylon 12, the selection of screw rod and mould, adopts ordinary PVC double thread screw rod, the screw rod compression ratio is 3.5-1, the draw ratio is more than or equal to 25, the nylon sheath extrusion mould adopts the trombone slide mould, the mould size selection is shown in the following table:

extrusion temperature:

preparation before extrusion: the nylon material is a polar medium and is easy to absorb moisture, when the water content of the nylon material exceeds 0.3 percent, the nylon material cannot be extruded, and the material with air leakage in the package must be dried before the extrusion of the nylon sheath, the set temperature is 115 +/-5 ℃, and the time is 2-3 hours; the machine cleaning requirement before extrusion: firstly, opening a machine head, pulling out a common PVC screw, cleaning a machine body, and cleaning material residues at each dead angle inside a machine barrel by using a cleaning cloth and an air pipe; cleaning the machine head and the machine barrel, scraping the material slag by using a tool, and finally cleaning dead corners to ensure the tidiness of the whole set of extrusion device; the filter plate is selected: selecting a common filter plate with filter holes, and producing without a filter screen; when the temperature of the flange and the temperature of the machine head close to the flange are higher by 5 ℃ just after the start, the temperature can be properly heated by a flame gun so as to be beneficial to heat transfer, the temperature of each section is kept for more than 15min after reaching the specified value, the extrusion can be carried out, and the temperature is reduced to the set temperature after the stabilization; during production, the surface of the wire core is kept dry and smooth before extrusion, a clean towel is used for wiping the wire core clean during production, and a heating device is used for preheating the wire core when necessary. A cooling mode: after the nylon sheath is extruded, a method of extremely fast cooling is adopted, the water tank is moved to the position closest to the machine head, the cooling water spray heads are connected with 4 water outlet pipes, 2 water outlet pipes are arranged above and 2 water outlet pipes are arranged below, the nylon sheath is ensured to be simultaneously cooled up and down after being extruded, and the cooling is uniform; the middle and rear sections of the cooling water tank are not added with cold water, and the nylon sheath is naturally cooled.

And (3) sacrificial layer control: the thickness of the sacrificial layer strictly executes the process thickness, and the selection requirement of the sacrificial layer mould is (inner diameter of a mould sleeve-outer diameter of a mould core) = the process thickness x (3.5-4.5).

Selecting a dish tool: the diameter of a cylinder of the middle rotating disc of the low-voltage cable is not less than 25 times of the outer diameter of the cable, the middle rotating disc of phi 3150 is selected as the middle rotating disc of the medium-voltage cable, and 1-2 layers of foam pads are wrapped around the middle rotating disc before the middle rotating disc is used; the delivery disk adopts a large-cylinder disk, the diameter of the inner ring of the disk is not less than 25 times of the outer diameter of the cable, and 1-2 layers of foam pads are wrapped before use.

It should be noted that, for simplicity of description, the foregoing embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required in the present application.

Furthermore, the terms "connected" and "disposed" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "connected" or "provided" may explicitly or implicitly include one or more of that feature. Moreover, the terms "connected," "disposed," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

In the above embodiments, the basic principle and the main features of the present invention and the advantages of the present invention have been described. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention, which should be construed as within the scope of the appended claims.

Claims (6)

1. The physical rat-proof and termite-proof cable is characterized by comprising a conductor (8), wherein an outer sheath (3) is arranged outside the conductor (8), protective layers for preventing animals from being damaged are arranged on the inner side and the outer side of the outer sheath (3), and a sacrificial layer (1) is further arranged on the outer side of the outer protective layer.

2. A physical protection against rodents and termites cable as claimed in claim 1, wherein said conductors (8) comprise one or more, each conductor (8) being further provided on its outer side with an insulating layer (7).

3. A physical protection against rodents and termites cable as claimed in claim 1, wherein a filling layer (6) is further arranged between said conductor (8) and said outer sheath (3).

4. A physical rodent and termite resistant cable according to claim 3, characterised in that a copper tape armouring (4) to protect against animal damage is provided between the filler layer (6) and the outer sheath (3).

5. A physical protection against rodents and termites cable as claimed in claim 4, wherein a tape (5) is further provided between said copper tape armouring (4) and the filling layer (6).

6. A physical rodent and termite resistant cable according to claim 1, characterised in that a nylon layer (2) protecting against animal damage is arranged between the sacrificial layer (1) and the outer sheath (3).

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