Bird beak resistant entry cable

Abstract

The application belongs to the technical field of optical cable, and particularly discloses a bird pecking prevention lead-in optical cable, which comprises an outer protective layer, a framework arranged in the outer protective layer, a plurality of first butterfly units arranged on the left and right sides of the framework, and a first butterfly unit arranged on the upper and lower sides of the framework. The first butterfly unit is provided with a first hanging wire part and a first butterfly part, and the first hanging wire part and the first butterfly part are connected through a first rib. At least one optical fiber is arranged in the first butterfly part, and the first hanging wire part is located outside the framework. A plurality of armored parts are arranged on both sides of the first hanging wire part of the first butterfly unit of the first butterfly part on the upper and lower sides of the framework, and all the first hanging wire parts and the armored parts form a ring shape. The application has the beneficial effects of good bird pecking prevention performance, strong mechanical performance, compact structure, low cost, convenient laying and the like.

Description

Technical Field

[0001] This invention belongs to the field of optical cable technology, and in particular discloses an anti-bird-pecking optical cable. Background Technology

[0002] As efforts to protect the ecological environment increase, the number of birds is also growing. Existing ordinary optical cables are easily pecked by birds, thus affecting their use.

[0003] In the prior art, CN114325989A discloses a high-temperature resistant optical cable, which includes a coating layer, a cladding layer, and a fiber core layer arranged from the outside to the inside. A heat dissipation structure layer is provided between the coating layer and the cladding layer. The heat dissipation structure layer includes a plurality of heat dissipation sheets, which are radially distributed around the center of the fiber core layer. Each heat dissipation sheet has a conical shape at both ends. Conical grooves are formed on the inner surface of the coating layer and the outer surface of the cladding layer opposite to each heat dissipation sheet. The two ends of each heat dissipation sheet are inserted into the corresponding grooves. The grooves are filled with structural adhesive. The fiber core layer includes a support frame. A through hole for inserting the optical fiber core is provided at the center of the support frame. A plurality of support ribs extend from the outer surface of the support frame. Each support rib is connected to the inner surface of the cladding layer. A snap-fit ​​gap is left between two adjacent support ribs. An optical fiber core or tension rope is inserted into the snap-fit ​​gap.

[0004] The aforementioned existing technology has the following drawbacks: 1. Poor resistance to bird pecking; 2. Poor mechanical properties, especially tensile properties; 3. Poor cabling efficiency; 4. Inconvenient access to optical units. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to disclose a bird-proof optical cable, which is achieved through the following technical solution.

[0006] A bird-proof optical cable includes an outer sheath, characterized in that a skeleton is provided inside the outer sheath, the skeleton is rectangular, a plurality of second slots are provided on the left and right sides of the skeleton, and at least one first slot is provided on the upper and lower sides of the skeleton, the first slots are located between the second slots on the left and right sides, a support bar is provided between two adjacent second slots, a support bar is provided on the upper side of the uppermost second slot, and a support bar is provided on the lower side of the lowermost second slot.

[0007] A first receiving slot is fitted with a first butterfly unit. The first butterfly unit has a first suspension wire component and a first butterfly component. The first suspension wire component and the first butterfly component are connected by a first rib. At least one optical fiber is provided inside the first butterfly component. The first suspension wire component is located outside the first receiving slot.

[0008] A first butterfly-shaped unit is snapped into the second container, and the first suspension wire component is located outside the second container.

[0009] Multiple armored components are provided on the left side of the first suspension wire component of the first butterfly unit in the leftmost first container and on the right side of the first suspension wire component of the first butterfly unit in the rightmost first container, and all the first suspension wires and armored components form a ring.

[0010] The aforementioned bird-proof optical cable includes an armored component comprising an armored component body and an armored protective layer extruded onto the armored component body.

[0011] A bird-proof optical cable includes an outer sheath, characterized in that a skeleton is provided inside the outer sheath, the skeleton is rectangular, a plurality of second slots are provided on the left and right sides of the skeleton, and at least one first slot is provided on the upper and lower sides of the skeleton, the first slots are located between the second slots on the left and right sides, a support bar is provided between two adjacent second slots, a support bar is provided on the upper side of the uppermost second slot, and a support bar is provided on the lower side of the lowermost second slot.

[0012] A first receiving slot is fitted with a first butterfly unit. The first butterfly unit has a first suspension wire component and a first butterfly component. The first suspension wire component and the first butterfly component are connected by a first rib. At least one optical fiber is provided inside the first butterfly component. The first suspension wire component is located outside the first receiving slot.

[0013] A first butterfly-shaped unit is snapped into the second container, and the first suspension wire component is located outside the second container.

[0014] A second butterfly unit is provided on the left side of the first suspension wire component of the first butterfly unit in the first accommodating slot on the far left, and a second butterfly unit is provided on the right side of the first suspension wire component of the first butterfly unit in the first accommodating slot on the far right. The two second butterfly units are symmetrically arranged. The second butterfly unit has a second suspension wire component and a second butterfly component. The second suspension wire component and the second butterfly component are connected by a second rib. The second butterfly component is provided with at least one optical fiber and two second reinforcing members.

[0015] All the first suspension wire components, the second suspension wire components, and the second reinforcement form a ring.

[0016] The aforementioned bird-proof fiber optic cable includes a second suspension wire component with a second suspension wire sheath and a second suspension wire located within the sheath. The line connecting the centers of the two second reinforcing members within the second butterfly component is parallel to the line connecting the centers of the two first reinforcing members of the first butterfly unit within any second slot. All optical fibers within the second butterfly component are located between the two second reinforcing members and the frame. A second tear for stripping optical fibers is provided on the long side of the sheath of the second butterfly unit near the frame.

[0017] In the aforementioned bird-proof fiber optic cable, the second suspension wire is in close contact with the adjacent first suspension wire.

[0018] In the aforementioned bird-proof fiber optic cable, the distance between the two second reinforcing members within the second butterfly-shaped component is less than the diameter of the optical fiber.

[0019] The aforementioned bird-proof optical cable features a second suspension sheath, a second reinforcing rib, and a second butterfly-shaped unit sheath, all integrally molded from flame-retardant polyolefin.

[0020] In the aforementioned bird-proof optical cable, in the first trough, the first butterfly-shaped component is tightly attached to the interior of the corresponding first trough, and in the second trough, the first butterfly-shaped component is tightly attached to the inner wall of the corresponding second trough.

[0021] In the aforementioned bird-proof optical cable, the first suspension wire components corresponding to two adjacent second troughs are tightly attached.

[0022] The aforementioned bird-proof optical cable includes a first suspension wire component comprising a first suspension wire sheath and a first suspension wire located within the first suspension wire sheath. The first butterfly component comprises two first reinforcing members, a first butterfly unit sheath, and at least one optical fiber. The two first reinforcing members and the optical fiber are located within the first butterfly unit sheath. The two first reinforcing members are located on both sides of all the optical fibers. The first butterfly unit sheath and the first suspension wire sheath are connected by a first rib. The two long sides of the first butterfly unit sheath are also provided with first tear openings for stripping the optical fiber. The center of the first suspension wire and the center of the two first reinforcing members are located on the same straight line.

[0023] The aforementioned bird-proof optical cable has an integrally formed electrical unit sheath at the left end of each left-side support bar and the right end of each right-side support bar. The electrical unit sheath contains an electrical unit, and the diameter of the electrical unit sheath is greater than the thickness of the corresponding support bar.

[0024] The aforementioned bird-proof fiber optic cable has a rectangular fiber optic ribbon cavity inside the support bar, and a fiber optic ribbon is installed inside the fiber optic ribbon cavity.

[0025] The aforementioned bird-proof optical cable has an outer sheath made of high-density polyethylene.

[0026] The aforementioned bird-proof optical cable features a first suspension wire sheath, a first reinforcing rib, and a first butterfly unit sheath, all integrally molded from flame-retardant polyolefin.

[0027] The aforementioned bird-proof fiber optic cable uses G657 optical fiber.

[0028] The aforementioned bird-proof optical cable has a first suspension wire made of phosphated steel wire or glass fiber reinforced plastic rod.

[0029] The aforementioned bird-proof optical cable has a first reinforcing member made of phosphated steel wire or glass fiber reinforced plastic rod.

[0030] The aforementioned bird-proof optical cable has an electrical unit sheath that does not contact the adjacent first suspension wire sheath.

[0031] The present invention has the following beneficial effects:

[0032] 1. An armor layer consisting of a first suspension wire and armor components, or an armor layer consisting of a first suspension wire, a second suspension wire, and a second butterfly unit, is formed on the outside of the frame. This effectively prevents birds from pecking at the internal optical fibers, electrical units, and optical fiber ribbons, ensuring communication security.

[0033] 2. The first butterfly unit and the frame form a plug-in structure, which can fix the first butterfly unit and the frame without the need for other fixing parts. This results in lower cost, more compact structure, higher cabling efficiency, easier access to the first butterfly unit, and higher laying efficiency.

[0034] 3. The tensile strength of the optical cable is provided by the first suspension wire, the first reinforcing member, and the armored components, or by the first suspension wire, the first reinforcing member, the second suspension wire, and the second reinforcing member. The tensile elements are evenly distributed, resulting in stronger tensile performance and better flexibility of the optical cable.

[0035] 4. Setting fiber optic ribbons inside the support strips can greatly increase the density of optical fibers inside the cable core. Moreover, only one fiber optic ribbon is placed in each support strip, which makes it easy to distinguish the fiber optic ribbons and avoids problems such as fiber optic ribbon entanglement, which would lead to increased attenuation.

[0036] 5. The optical fiber in the second butterfly unit is located between the two second reinforcing members and the frame, and the distance between the two second reinforcing members is less than the diameter of the optical fiber. That is, the two second reinforcing members can prevent birds from pecking and damaging the optical fiber in the second butterfly unit, thus providing better protection for the optical fiber in the second butterfly unit.

[0037] 6. Each support bar is equipped with an electrical unit at its end, enabling the optical cable to transmit both optical and electrical signals simultaneously. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural schematic diagram of a segment of Embodiment 1 of the present invention.

[0039] Figure 2 This is the front view of Embodiment 1 of the present invention.

[0040] Figure 3 This is a three-dimensional structural diagram of the skeleton of Embodiment 1 of the present invention.

[0041] Figure 4 This is a front view of the skeleton of Embodiment 1 of the present invention.

[0042] Figure 5 This is a front view of the first butterfly unit in Embodiment 1 of the present invention.

[0043] Figure 6 This is the front view of Embodiment 2 of the present invention.

[0044] Figure 7 This is the front view of the skeleton of Embodiment 2 of the present invention.

[0045] Figure 8 This is the front view of Embodiment 3 of the present invention.

[0046] Figure 9 This is a front view of the second butterfly-shaped unit in Embodiment 3 of the present invention.

[0047] In the figure, the corresponding figures are as follows: 1. Outer sheath, 2. Armor component, 3. Skeleton, 31. Support bar, 32. First cavity, 33. Second cavity, 34. Electrical unit sheath, 35. Electrical unit, 36. Fiber optic ribbon, 37. Fiber optic ribbon cavity, 4. First butterfly unit, 41. First suspension wire, 42. First suspension wire sheath, 43. First rib, 44. First reinforcing member, 45. First butterfly unit sheath, 46. First tear, 47. Fiber optic cable, 5. Second butterfly unit, 51. Second suspension wire, 52. Second suspension wire sheath, 53. Second rib, 54. Second reinforcing member, 55. Second butterfly unit sheath, 56. Second tear. Detailed Implementation

[0048] Example 1: As Figures 1 to 5 A bird-proof optical cable includes an outer sheath 1, within which is a frame 3. The frame 3 is rectangular, with four second slots 33 on each of the left and right sides, and a first slot 32 on each of the top and bottom sides. The first slots 32 are located between the second slots 33 on the left and right sides. A support bar 31 is provided between two adjacent second slots 33. A support bar 31 is provided on the upper side of the uppermost second slot 33 and on the lower side of the lowermost second slot 33. An electrical unit sheath 34 is integrally formed with each left end of the support bar 31 and the right end of the support bar 31 on the right. An electrical unit sheath 34 contains an electrical unit 35, and the diameter of the electrical unit sheath 34 is greater than the thickness of the corresponding support bar 31.

[0049] Each first slot 32 and each second slot 33 is fitted with a first butterfly unit 4. The first butterfly unit 4 includes a first suspension wire 41, a first suspension wire sheath 42, a first rib 43, two first reinforcing members 44, a first butterfly unit sheath 45, and an optical fiber 47. The first suspension wire 41 is located inside the first suspension wire sheath 42, and the two first reinforcing members 44 and the optical fiber 47 are located inside the first butterfly unit sheath 45. The two first reinforcing members 44 are located on both sides of the optical fiber 47. The first butterfly unit sheath 45 and the first suspension wire sheath 42 are connected by the first rib 43. The two long sides of the first butterfly unit sheath 45 are also provided with first tearing openings 46 for stripping the optical fiber 47. The center of the first suspension wire 41 and the center of the two first reinforcing members 44 are on the same straight line. The side parallel to the line connecting the centers of the two first reinforcing members 44 is the long side of the first butterfly unit sheath 45.

[0050] In the first container 32, the first butterfly-shaped unit sheath 45 is located inside the corresponding first container 32, and the first butterfly-shaped unit sheath 45 is in close contact with the inner wall of the corresponding first container 32, while the first suspension wire sheath 42 is located outside the corresponding first container 32.

[0051] In the second container 33, the first butterfly-shaped unit protective layer 45 is located inside the corresponding second container 33, and the first butterfly-shaped unit protective layer 45 is in close contact with the inner wall of the corresponding second container 33. The first suspension line protective layer 42 is located outside the corresponding second container 33, and two adjacent first suspension line protective layers 42 are in close contact.

[0052] Three armored components 2 are provided on each side of the first suspension wire sheath 42 of the first butterfly unit 4 in the first trough 32. Each armored component 2 includes an armored component body and an armored protective layer extruded outside the armored component body. All the first suspension wire sheaths 42 and the armored protective layers form a ring.

[0053] Example 2: Figure 6 and Figure 7 and refer to Figure 5 A bird-proof optical cable includes an outer sheath 1, within which is a frame 3. The frame 3 is rectangular, with four second slots 33 on each of its left and right sides, and a first slot 32 on each of its upper and lower sides. The first slots 32 are located between the second slots 33 on the left and right sides. A support bar 31 is provided between two adjacent second slots 33. A support bar 31 is provided on the upper side of the uppermost second slot 33 and on the lower side of the lowermost second slot 33. A rectangular optical fiber ribbon cavity 37 is provided inside the support bar 31, and an optical fiber ribbon 36 is provided inside the optical fiber ribbon cavity 37. An integrally formed electrical unit sheath 34 is provided at the left end of each left support bar 31 and the right end of each right support bar 31. An electrical unit sheath 34 is provided inside the electrical unit sheath 34, and the diameter of the electrical unit sheath 34 is greater than the thickness of the corresponding support bar 31.

[0054] Each first slot 32 and each second slot 33 is fitted with a first butterfly unit 4. The first butterfly unit 4 includes a first suspension wire 41, a first suspension wire sheath 42, a first rib 43, two first reinforcing members 44, a first butterfly unit sheath 45, and an optical fiber 47. The first suspension wire 41 is located inside the first suspension wire sheath 42, and the two first reinforcing members 44 and the optical fiber 47 are located inside the first butterfly unit sheath 45. The two first reinforcing members 44 are located on both sides of the optical fiber 47. The first butterfly unit sheath 45 and the first suspension wire sheath 42 are connected by the first rib 43. The two long sides of the first butterfly unit sheath 45 are also provided with first tearing openings 46 for stripping the optical fiber 47. The center of the first suspension wire 41 and the center of the two first reinforcing members 44 are on the same straight line. The side parallel to the line connecting the centers of the two first reinforcing members 44 is the long side of the first butterfly unit sheath 45.

[0055] In the first container 32, the first butterfly-shaped unit sheath 45 is located inside the corresponding first container 32, and the first butterfly-shaped unit sheath 45 is in close contact with the inner wall of the corresponding first container 32, while the first suspension wire sheath 42 is located outside the corresponding first container 32.

[0056] In the second container 33, the first butterfly-shaped unit protective layer 45 is located inside the corresponding second container 33, and the first butterfly-shaped unit protective layer 45 is in close contact with the inner wall of the corresponding second container 33. The first suspension line protective layer 42 is located outside the corresponding second container 33, and two adjacent first suspension line protective layers 42 are in close contact.

[0057] Three armored components 2 are provided on each side of the first suspension wire sheath 42 of the first butterfly unit 4 in the first trough 32. Each armored component 2 includes an armored component body and an armored protective layer extruded outside the armored component body. All the first suspension wire sheaths 42 and the armored protective layers form a ring.

[0058] Example 3: As Figure 8 and Figure 9 and refer to Figures 3 to 5 A bird-proof optical cable includes an outer sheath 1, within which is a frame 3. The frame 3 is rectangular, with four second slots 33 on each of the left and right sides, and a first slot 32 on each of the top and bottom sides. The first slots 32 are located between the second slots 33 on the left and right sides. A support bar 31 is provided between two adjacent second slots 33. A support bar 31 is provided on the upper side of the uppermost second slot 33 and on the lower side of the lowermost second slot 33. An electrical unit sheath 34 is integrally formed with each left end of the support bar 31 and the right end of the support bar 31 on the right. An electrical unit sheath 34 contains an electrical unit 35, and the diameter of the electrical unit sheath 34 is greater than the thickness of the corresponding support bar 31.

[0059] Each first slot 32 and each second slot 33 is fitted with a first butterfly unit 4. The first butterfly unit 4 includes a first suspension wire 41, a first suspension wire sheath 42, a first rib 43, two first reinforcing members 44, a first butterfly unit sheath 45, and an optical fiber 47. The first suspension wire 41 is located inside the first suspension wire sheath 42, and the two first reinforcing members 44 and the optical fiber 47 are located inside the first butterfly unit sheath 45. The two first reinforcing members 44 are located on both sides of the optical fiber 47. The first butterfly unit sheath 45 and the first suspension wire sheath 42 are connected by the first rib 43. The two long sides of the first butterfly unit sheath 45 are also provided with first tearing openings 46 for stripping the optical fiber 47. The center of the first suspension wire 41 and the center of the two first reinforcing members 44 are on the same straight line. The side parallel to the line connecting the centers of the two first reinforcing members 44 is the long side of the first butterfly unit sheath 45.

[0060] In the first container 32, the first butterfly-shaped unit sheath 45 is located inside the corresponding first container 32, and the first butterfly-shaped unit sheath 45 is in close contact with the inner wall of the corresponding first container 32, while the first suspension wire sheath 42 is located outside the corresponding first container 32.

[0061] In the second container 33, the first butterfly-shaped unit protective layer 45 is located inside the corresponding second container 33, and the first butterfly-shaped unit protective layer 45 is in close contact with the inner sidewall of the corresponding second container 33. The first suspension line protective layer 42 is located outside the corresponding second container 33, and two adjacent first suspension line protective layers 42 are in close contact.

[0062] Two second butterfly units 5 are symmetrically arranged on both sides of the first suspension wire sheath 42 of the first butterfly unit 4 in the first accommodating groove 32. The second butterfly unit 5 has a second suspension wire 51, a second suspension wire sheath 52, a second rib 53, two second reinforcing members 54, a second butterfly unit sheath 55, and an optical fiber 47. The second suspension wire 51 is located inside the second suspension wire sheath 52, and the two second reinforcing members 54 and the optical fiber 47 are located inside the second butterfly unit sheath 55. The line connecting the centers of the two second reinforcing members 54 is connected to the two first reinforcing members of the first butterfly unit 4 in any of the first accommodating grooves 32. The lines connecting the centers of the two second reinforcing members 54 are parallel. The optical fiber 47 is located between the two second reinforcing members 54 and the frame 3. The second suspension sheath 52 and the second butterfly unit sheath 55 are connected by the second rib 53. The second butterfly unit sheath 55 has a second tear 56 for stripping the optical fiber 47 on its long side near the frame 3. The side parallel to the line connecting the centers of the two second reinforcing members 54 is the long side of the second butterfly unit sheath 55. The second suspension sheath 52 is in close contact with the adjacent first suspension sheath 42. All the first suspension sheaths 42 and the second suspension sheaths 52 form a ring.

[0063] The aforementioned bird-proof optical cable features a second suspension sheath 52, a second reinforcing rib 53, and a second butterfly-shaped unit sheath 55, all integrally molded from flame-retardant polyolefin.

[0064] In the aforementioned bird-proof optical cable, the distance between the two second reinforcing members 54 within the second butterfly unit 5 is less than the diameter of the optical fiber 47.

[0065] The bird-proof optical cable described in any of the above embodiments has an outer sheath 1 made of high-density polyethylene.

[0066] In any of the above embodiments, the first suspension wire sheath 42, the first rib 43, and the first butterfly unit sheath 45 of the first butterfly unit 4 are integrally molded from flame-retardant polyolefin.

[0067] In any of the above embodiments, the bird-proof fiber optic cable uses G657 fiber for fiber 47.

[0068] In any of the above embodiments, the first suspension wire 41 of the anti-bird-pecking optical cable is a phosphated steel wire or a glass fiber reinforced plastic rod.

[0069] In any of the above embodiments, the first reinforcing member 44 of the anti-bird-pecking optical cable is a phosphated steel wire or a glass fiber reinforced plastic rod.

[0070] In any of the above embodiments, the bird-proof optical cable has an electrical unit sheath 34 that does not contact the adjacent first suspension wire sheath 42.

[0071] The tensile stress and strain in the mechanical properties were tested. The absolute value of the strain change at the short-term set value of 3000N was no greater than 0.1% and the absolute value of the optical power change was no greater than 0.05dB, which both meet the requirements of the overhead optical cable.

[0072] The present invention has the following beneficial effects:

[0073] 1. An armor layer consisting of a first suspension wire 41 and an armor component 2, or an armor layer consisting of a first suspension wire 41, a second suspension wire 51, and a second butterfly unit 5, is formed on the outside of the frame 3. This armor layer can effectively prevent birds from pecking at the internal optical fiber 47, electrical unit 35, and optical fiber ribbon 36, thus ensuring communication security.

[0074] 2. The first butterfly unit 4 and the frame 3 form a plug-in structure, which can fix the first butterfly unit 4 and the frame 3 without the need for other fixing parts. This results in lower cost, more compact structure, higher cabling efficiency, easier access to the first butterfly unit 4, and higher laying efficiency.

[0075] 3. The tensile strength of the optical cable is provided by the first suspension wire 41, the first reinforcing member 44, and the armor component 2, or by the first suspension wire 41, the first reinforcing member 44, the second suspension wire 51, and the second reinforcing member 54. The tensile elements are evenly distributed, the tensile performance is stronger, and the optical cable is more flexible.

[0076] 4. Setting fiber optic ribbons 36 inside the support strip 31 can greatly increase the density of optical fibers inside the cable core. Moreover, only one fiber optic ribbon 36 is placed in each support strip 31, which makes it easy to distinguish the fiber optic ribbons 36 and avoids problems such as fiber optic ribbon entanglement, which would lead to increased attenuation.

[0077] 5. The optical fiber 47 in the second butterfly unit 5 is located between the two second reinforcing members 54 and the frame 3, and the distance between the two second reinforcing members 54 is less than the diameter of the optical fiber 47. That is, the two second reinforcing members 54 can prevent birds from pecking at the optical fiber 47 in the second butterfly unit 5, thus providing better protection for the optical fiber 47 in the second butterfly unit 5.

[0078] 6. Each support bar 31 is equipped with an electrical unit 35 at its end, enabling the optical cable to transmit both optical and electrical signals simultaneously.

[0079] This application can be used as a smart sensor or smart sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or an image sensor; since it transmits light signals through the principle of total internal reflection, it can also be used as a distance sensor; the optical fiber in this application is itself an optical waveguide, so it can be used as an optical waveguide, such as an arrayed optical waveguide or a diffractive optical waveguide; this application can also be used in the field of optical computing, as part of optical chip computing, optical computing, optical network computing, and optical computing.

[0080] The electrical unit in this application contains a conductor, which can be made of aluminum alloy, hence it can be called an aluminum alloy power cable. Due to the effective electrical isolation of the skeleton, it can transmit very high power levels, hence it can also be called a high voltage or ultra-high voltage cable. In this application, because it has fiber optic communication capabilities, it can be used in smart grids. The materials of the inner sheath and / or outer sheath, as well as the skeleton, can all be cross-linked polyethylene insulation materials, hence it can also be called a cross-linked polyethylene insulated power cable.

[0081] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A bird-proof optical cable, comprising an outer sheath (1), characterized in that, The outer protective layer (1) has a frame (3) inside. The frame (3) is rectangular. Multiple second receiving slots (33) are provided on the left and right sides of the frame (3). At least one first receiving slot (32) is provided on the upper and lower sides of the frame (3). The first receiving slot (32) is located between the second receiving slots (33) on the left and right sides. A support bar (31) is provided between two adjacent second receiving slots (33). A support bar (31) is provided on the upper side of the uppermost second receiving slot (33). A support bar (31) is provided on the lower side of the lowermost second receiving slot (33). A first butterfly unit (4) is snapped into a first slot (32). The first butterfly unit (4) has a first suspension wire component and a first butterfly component. The first suspension wire component and the first butterfly component are connected by a first rib (43). At least one optical fiber (47) is provided inside the first butterfly component. The first suspension wire component is located outside the first slot (32). A first butterfly unit (4) is snapped into a second slot (33). The first suspension wire component is located outside the second slot (33). A second butterfly unit (5) is provided to the left of the first suspension wire component of the first butterfly unit (4) in the leftmost first slot (32). The rightmost first slot (32) A second butterfly unit (5) is provided on the right side of the first suspension wire component of the first butterfly unit (4) in the first butterfly unit (4). The two second butterfly units (5) are symmetrically arranged. The second butterfly unit (5) has a second suspension wire component and a second butterfly component. The second suspension wire component and the second butterfly component are connected by a second rib (53). The second butterfly component is provided with at least one optical fiber (47) and two second reinforcing members (54). All the first suspension wire components, the second suspension wire components and the second reinforcing members (54) form a ring. A rectangular optical fiber ribbon cavity (37) is provided in the support strip (31). An optical fiber ribbon (36) is provided in the optical fiber ribbon cavity (37).

2. The bird-proof optical cable according to claim 1, characterized in that, The second suspension wire component has a second suspension wire sheath (52) and a second suspension wire (51) located within the second suspension wire sheath (52). The line connecting the centers of the two second reinforcing members (54) within the second butterfly component is parallel to the line connecting the centers of the two first reinforcing members (44) of the first butterfly unit (4) within any second accommodating slot (33). All optical fibers (47) within the second butterfly component are located between the two second reinforcing members (54) and the frame (3).

3. The bird-proof optical cable according to claim 2, characterized in that, The second suspension line is in close contact with the adjacent first suspension line.

4. The bird-proof optical cable according to claim 3, characterized in that, The distance between the two second reinforcing members (54) in the second butterfly component is less than the diameter of the optical fiber (47).

5. A bird-proof optical cable according to any one of claims 1 to 4, characterized in that, In the first container (32), the first butterfly-shaped component is in close contact with the interior of the corresponding first container (32), and in the second container (33), the first butterfly-shaped component is in close contact with the inner wall of the corresponding second container (33).

6. The bird-proof optical cable according to claim 5, characterized in that, The first suspension wire components corresponding to the two adjacent second troughs (33) are in close contact.

7. The bird-proof optical cable according to claim 6, characterized in that, The first suspension wire component includes a first suspension wire sheath (42) and a first suspension wire (41) located within the first suspension wire sheath (42). The first butterfly component includes two first reinforcing members (44), a first butterfly unit sheath (45), and at least one optical fiber (47). The two first reinforcing members (44) and the optical fiber (47) are located within the first butterfly unit sheath (45). The two first reinforcing members (44) are located on both sides of all the optical fibers (47). The first butterfly unit sheath (45) and the first suspension wire sheath (42) are connected by a first rib (43). The center of the first suspension wire (41) and the center of the two first reinforcing members (44) are located on the same straight line.

8. The bird-proof optical cable according to claim 7, characterized in that, Each left end of the left support bar (31) and each right end of the right support bar (31) are provided with an integrally formed electrical unit protective layer (34), and an electrical unit (35) is provided inside the electrical unit protective layer (34). The diameter of the electrical unit protective layer (34) is greater than the thickness of the corresponding support bar (31).

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