Flat non-metal armored anti-rat-bite ADSS optical cable

Abstract

The utility model relates to the field of ADSS optical cables, in particular to a flat non-metal armored anti-rat-bite ADSS optical cable. The flat non-metal armored anti-rat-bite ADSS optical cable comprises fiber paste, optical fibers, a PBT loose tube sleeve, a central reinforcing piece, a water-blocking compound, an inner sheath, an aramid yarn reinforcing piece, a middle sheath, a flat non-metal armored layer and an outer sheath. The PBT loose tube sleeve is filled with fiber paste and optical fibers; the fiber paste, the optical fibers, the PBT loose tube sleeve, the central reinforcing member and the water-blocking compound are wrapped in the inner sheath. The outer layer of the inner sheath is sequentially provided with an aramid yarn reinforcing member, a middle sheath, a flat non-metal armor layer and an outer sheath. According to the cable core structure, the outer diameter of the flat GFRP strip is smaller than that of a circular GFRP rod, the cost is lower, and the cable core structure has the same rat-proof effect and supporting force; the flat GFRP strips are more convenient to manage and control raw materials than arched GFRP strips and other special-shaped GFRP strips; and the design requirements of different core numbers and different structures can be met only by changing the number of the flat GFRP strips.

Description

Technical Field

[0001] The utility model relates to the field of all-dielectric self-supporting ADSS optical cables, in particular to a flat non-metallic armored rat-proof ADSS optical cable. Background Art

[0002] Communication optical cables are laid across mountains and forests for control, monitoring and sensing. Among them, all-dielectric non-metallic overhead optical cables are the most widely used due to their low networking cost, convenient maintenance, anti-electromagnetic interference, lightning protection, light weight, and convenient wiring construction. However, the non-metallic anti-rat bite capability needs to be improved.

[0003] The first generation of anti-rat and anti-bird methods is a chemical method, which adds rodent repellent or capsaicin to the sheath material. The material has a strong pungent odor and is not environmentally friendly. In addition, the chemical components evaporate over time, and the anti-rat and anti-bird effects are not good. The second generation uses physical methods, using glass fiber yarn, changing the color of the sheath, etc. The glass fiber yarn is easy to bite off, and the anti-rat effect is still not obvious. Now the third generation uses non-metallic rods, including glass fiber reinforced plastic GFRP, aramid fiber reinforced plastic KFRP or other hard non-metallic rods. Among them, glass fiber reinforced plastic GFRP rods. After experiments and practice, the use of GFRP rods has a better anti-rat effect. In order to achieve different anti-rat effects, round GFRP rods, flat GFRP strips, arched GFRP strips and other special-shaped structures have appeared.

[0004] Among them, the flat non-metallic strips are processed differently due to their shape and material being different from ordinary steel wire, non-metallic yarn, and round rods. The technical difficulty of using flat GFRP strips to prevent rats and birds lies in the twisting of the flat GFRP strips. During the twisting process, the flat GFRP strips must not be twisted, misaligned, or overlapped to ensure that the flat GFRP strips fit the cable core or sheath. Utility Model Content

[0005] The purpose of the utility model is to provide a flat non-metallic armored rat-proof ADSS optical cable in view of the above problems.

[0006] A flat non-metallic armored rat-proof ADSS optical cable comprises fiber paste, optical fiber, PBT loose tube sleeve, central reinforcement, water-blocking compound, inner sheath, aramid yarn reinforcement, middle sheath, flat non-metallic armor layer and outer sheath; the PBT loose tube sleeve is filled with fiber paste and optical fiber; the inner sheath is wrapped with fiber paste, optical fiber, PBT loose tube sleeve, central reinforcement and water-blocking compound; the outer layer of the inner sheath is sequentially composed of aramid yarn reinforcement, middle sheath, flat non-metallic armor layer and outer sheath.

[0007] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the optical fiber includes single-mode optical fiber, multi-mode optical fiber, and ultra-low loss optical fiber.

[0008] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the central reinforcement member is a central member made of a non-metallic material and having a circular cross-section; the non-metallic material is one of glass fiber reinforced plastic GFRP and aramid fiber reinforced plastic KFRP.

[0009] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the flat non-metallic armor layer is composed of a plurality of non-metallic flat strips; the non-metallic flat strips are arranged and twisted in sequence, are flat in shape, and are made of one of glass fiber reinforced plastic GFRP strips and aramid fiber reinforced plastic KFRP strips.

[0010] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the non-metallic flat strip has a width of 3.0 mm and a thickness of 1.0 mm.

[0011] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the flat non-metallic armor layer is twisted on the middle sheath.

[0012] Furthermore, in a flat non-metallic armored rat-proof ADSS optical cable, the aramid yarn reinforcement is fixed on the inner sheath.

[0013] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the central reinforcement member is surrounded by a PBT loose tube sleeve twisted therearound.

[0014] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the fiber paste is wrapped around the optical fiber; and the water-blocking compound wraps the PBT loose tube sleeve and the central reinforcement.

[0015] The beneficial effects of the utility model are as follows: a flat non-metallic armored rat-proof ADSS optical cable, in which the cable core structure uses flat GFRP strips with a smaller outer diameter than round GFRP rods, lower cost, and the same rat-proofing effect and supporting force; the flat GFRP strips are easier to manage and control raw materials than arched GFRP strips and other special-shaped GFRP strips; and the design requirements of different core numbers and different structures can be met by simply changing the number of flat GFRP strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of a flat non-metallic armored rodent-proof ADSS optical cable.

[0017] Figure 2 This is the structural diagram of the GFRP stranding tooling die configuration.

[0018] In the figure: 1-fiber paste, 2-optical fiber, 3-PBT loose tube, 4-center reinforcement, 5-water blocking compound, 6-inner sheath, 7-aramid yarn reinforcement, 8-middle sheath, 9-flat non-metallic armor layer, 10-outer sheath.

[0019] 11- tooling mould, 12- GFRP monofilament, 13- twist release device, 14- twisted skin, 15- cable core, 16- twisting mould, 17- bad twisting alarm device. DETAILED DESCRIPTION

[0020] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0021] In this embodiment, as shown in the attached Figure 1 A flat non-metallic armored rat-proof ADSS optical cable is shown, comprising a fiber paste 1, an optical fiber 2, a PBT loose tube sleeve 3, a central reinforcement 4, a water-blocking compound 5, an inner sheath 6, an aramid yarn reinforcement 7, a middle sheath 8, a flat non-metallic armor layer 9 and an outer sheath 10; the PBT loose tube sleeve 3 is filled with the fiber paste 1 and the optical fiber 2; the inner sheath 6 is wrapped with the fiber paste 1, the optical fiber 2, the PBT loose tube sleeve 3, the central reinforcement 4 and the water-blocking compound 5; the outer layer of the inner sheath 6 is the aramid yarn reinforcement 7, the middle sheath 8, the flat non-metallic armor layer 9 and the outer sheath 10 in sequence.

[0022] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the optical fiber 2 includes a single-mode optical fiber, a multi-mode optical fiber, and an ultra-low-loss optical fiber.

[0023] Furthermore, in a flat non-metallic armored rat-proof ADSS optical cable, the central reinforcement member 4 is a central member with a circular cross-section made of a non-metallic material; the non-metallic material is one of glass fiber reinforced plastic GFRP and aramid fiber reinforced plastic KFRP.

[0024] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the flat non-metallic armor layer 9 is composed of a plurality of non-metallic flat strips; the non-metallic flat strips are arranged in parallel in sequence, are flat in shape, and are made of one of glass fiber reinforced plastic GFRP strips and aramid fiber reinforced plastic KFRP strips.

[0025] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the non-metallic flat strip has a width of 3.0 mm and a thickness of 1.0 mm.

[0026] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the flat non-metallic armor layer 9 is twisted on the middle sheath 8 .

[0027] Furthermore, in a flat non-metallic armored rat-proof ADSS optical cable, the aramid yarn reinforcement member 7 is fixed on the inner sheath 6 .

[0028] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the central reinforcement member 4 is surrounded by a PBT loose tube sleeve 3 twisted therearound.

[0029] Furthermore, a flat non-metallic armored rat-proof ADSS optical cable is provided, wherein the fiber paste 1 is wrapped around the optical fiber 2; the water-blocking compound 5 wraps the PBT loose tube sleeve 3 and the central reinforcement member 4.

[0030] Among them, when twisting the flat non-metallic strips, by adding a tooling mold 11, the flat non-metallic armor layer 9 will not be twisted back during twisting, and will not be torsion, misaligned, or overlapped, thereby ensuring that the flat non-metallic armor strips 9 are tightly fitted to the cable core 15 or the sheath during the twisting process, and the flat non-metallic armor 9 is on the outside of the cable core 15.

[0031] As attached Figure 2 As shown, the specific implementation process of the tooling die 11 twisting the flat non-metallic strips is as follows:

[0032] The back-twisting function of the cage stranding machine can be quickly and conveniently cancelled and restored. When the flat non-metallic armor layer 9 is stranded, the non-back-twisting stranding is adopted. The GFRP monofilaments 12 are evenly distributed on the stranding cage. The tension is controlled by actively paying out the wires through each pay-off unit to ensure the same pay-out tension. The appropriate twisting pitch is selected, and the tooling mold 11 is used to control the flat non-metallic strips from twisting, overlapping, dislocation and flipping back and forth.

[0033] Among them, the anti-twisting device 13 is responsible for preventing the flat non-metallic strips from twisting, the bad twisting alarm device 17 is responsible for alarming when the flat non-metallic strips are unqualified, the twisting mold 16 stipulates the twisting of the flat non-metallic strips, and the cable core 15 or the sheath is rounded in appearance. Several flat non-metallic strips are wrapped and twisted on the cable core or the sheath to form a twisted skin 14. After twisting, the flat non-metallic strips will not have back strands, crossing, looseness, and bending. Several flat non-metallic strips are bundled and fixed on the cable core 15 or the sheath through aramid yarn to form a semi-finished product.

[0034] The utility model designs a flat non-metallic armored rat-proof ADSS optical cable. The cable core structure uses flat GFRP bars with a smaller outer diameter than round GFRP bars, lower cost, and the same rat-proofing effect and supporting force. The flat GFRP bars are easier to manage and control raw materials than arched GFRP bars and other special-shaped GFRP bars. Only the number of flat GFRP bars needs to be changed to meet the design requirements of different core numbers and different structures.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A flat non-metallic armored rat-proof ADSS optical cable, characterized in that: The invention comprises a fiber paste (1), an optical fiber (2), a PBT loose tube sleeve (3), a central reinforcement member (4), a water-blocking compound (5), an inner sheath (6), an aramid yarn reinforcement member (7), a middle sheath (8), a flat non-metallic armor layer (9) and an outer sheath (10); the PBT loose tube sleeve (3) is filled with the fiber paste (1) and the optical fiber (2); the inner sheath (6) is wrapped with the fiber paste (1), the optical fiber (2), the PBT loose tube sleeve (3), the central reinforcement member (4) and the water-blocking compound (5); the outer layer of the inner sheath (6) is sequentially composed of an aramid yarn reinforcement member (7), a middle sheath (8), a flat non-metallic armor layer (9) and an outer sheath (10).

2. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The optical fiber (2) includes single-mode optical fiber, multi-mode optical fiber, and ultra-low loss optical fiber.

3. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The central reinforcement member (4) is a central member made of a non-metallic material and having a circular cross-section; the non-metallic material is one of glass fiber reinforced plastic GFRP and aramid fiber reinforced plastic KFRP.

4. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The flat non-metallic armor layer (9) is composed of a plurality of non-metallic flat strips; the non-metallic flat strips are arranged and twisted in sequence, are flat in shape, and are made of one of glass fiber reinforced plastic GFRP strips and aramid fiber reinforced plastic KFRP strips.

5. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 4, characterized in that: The non-metallic flat strip has a width of 3.0 mm and a thickness of 1.0 mm.

6. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The flat non-metallic armor layer (9) is twisted on the middle sheath (8).

7. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The aramid yarn reinforcement (7) is fixed on the inner sheath (6).

8. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The central reinforcement member (4) is surrounded by a PBT loose tube sleeve (3) twisted around it.

9. A flat non-metallic armored rat-proof ADSS optical cable as claimed in claim 1, characterized in that: The fiber paste (1) is wrapped around the optical fiber (2); the water-blocking compound (5) wraps the PBT loose tube sleeve (3) and the central reinforcement member (4).

Images