Detachable combined butterfly-shaped optical cable

Abstract

The invention relates to the technical field of butterfly-shaped optical cables, in particular to a detachable combined butterfly-shaped optical cable, the combined butterfly-shaped optical cable comprises a self-supporting butterfly-shaped cable and a non-self-supporting butterfly-shaped cable, and the appearance structures of a first butterfly-shaped cable unit and a second butterfly-shaped cable unit and the layout structure between the first butterfly-shaped cable unit and the second butterfly-shaped cable unit are optimized. And the material consumption and the cost are reduced while the communication capacity of the whole optical cable is enhanced. After the outer protective sleeve of the combined butterfly cable is stripped and the outer framework is detached, the first butterfly cable unit or the second butterfly cable unit compactly arranged in the framework cavity can be conveniently and independently detached for use, and particularly, a suspension wire piece in the first butterfly cable unit is stripped for overhead laying of the whole combined butterfly cable; and the flexibility of the overall laying mode of the combined butterfly cable is enhanced. When the first butterfly cable unit or the second butterfly cable unit in the combined butterfly cable is detached for use, other butterfly cable units can be prevented from being scattered outside through the outer framework after the optical cable is stripped; and the skeleton cavity realizes ordered arrangement of the butterfly cable units in the skeleton cavity and provides supporting and protecting effects.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly optical cables, and in particular to a detachable combined butterfly optical cable. Background Art

[0002] With the rapid development of broadband technology, optical fiber communication technology has become the main pillar of modern communication due to its significant advantages such as high speed, large capacity and low loss. As an important optical fiber communication transmission medium, butterfly cable has been widely used in fiber-to-the-home (FTTH), smart buildings, data centers and other scenarios due to its unique shape and excellent performance.

[0003] Butterfly cables include self-supporting cables for aerial use and non-self-supporting cables for direct burial or pipeline use. The single structure of butterfly cables is not easy to expand. In a complex network environment, a single butterfly cable unit cannot meet the diverse transmission needs. By bundling multiple butterfly cable units into an integral optical cable, the modularization, combination and standardization of optical cables can be achieved. Although the bundled optical cable expands the communication capacity, the structure is complex, and the unused optical cable units will be scattered outside after stripping, causing inconvenience to users.

[0004] In the structure of a bundled multi-core butterfly cable, the more butterfly cable units there are, the greater the increase in the overall diameter of the product, which in turn causes a significant increase in the consumption of various materials, and significantly increases the material, production, transportation, and management costs of the product. Most bundled optical cables only use non-self-supporting butterfly cable units, and their own structure cannot be laid overhead, and the overall structure is not convenient for overhead laying.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Summary of the invention

[0006] The present invention provides a detachable combined butterfly-shaped optical cable, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: A detachable combined butterfly optical cable comprises: a first butterfly cable unit, a second butterfly cable unit, an outer frame and a protective cover, wherein the outer frame is annular and has a frame cavity formed inside thereof, the first butterfly cable unit and the second butterfly cable unit are both provided with a plurality of units in the frame cavity, and the protective cover is covered on the outer ring of the outer frame; The first butterfly cable unit is configured as a self-supporting butterfly cable structure, including a first butterfly sheath and a suspension wire member arranged at one end thereof, wherein a first optical fiber and two first reinforcement members are coated in the first butterfly sheath, and the two first reinforcement members are respectively located on both sides of the first optical fiber; The second butterfly cable unit is configured as a non-self-supporting butterfly cable structure, including a second butterfly-shaped sheath, a second optical fiber and two second reinforcement members wrapped therein, wherein the two second reinforcement members are respectively located on both sides of the second optical fiber; Three first butterfly cable units are circumferentially arranged in the middle area of ​​the skeleton cavity, the three first butterfly cable units are adjacent to each other at the head and tail ends and arranged in a triangle, and the second butterfly cable units are evenly arranged on the outer circles of the three first butterfly cable units along the circumferential direction.

[0008] Furthermore, the first butterfly-shaped protective cover comprises a first protective body and a second protective body which are symmetrically arranged, and the first protective body and the second protective body are both arranged in a regular hexagonal prism structure; The hanging wire member is located on a side of the first protective body away from the second protective body, and its outer contour is set to be a circle inscribed in the outer contour of the first protective body, and symmetrical first grooves are formed on both sides of the connection between the first protective body and the second protective body.

[0009] Furthermore, a first frame groove and a second frame groove are provided on the inner side of the outer frame, and the first frame groove and the second frame groove are alternately provided along the circumference of the outer frame; The first frame groove and the second frame groove are each provided with three grooves along the circumference of the outer frame, and are respectively arranged corresponding to the suspension wire member and the second butterfly-shaped sheath.

[0010] Furthermore, the outer frame includes a support body, a first plate body and a second plate body arranged along the circumference thereof, six support bodies are arranged along the circumference of the outer frame, and the first plate body and the second plate body are alternately arranged between two adjacent support bodies; The first plate body disposed between two adjacent support bodies cooperates to form the first frame groove, and the second plate body disposed between two adjacent support bodies cooperates to form the second frame groove.

[0011] Furthermore, the circumferential side surface of the support body includes a first bottom surface and two first side surfaces symmetrically arranged, the first bottom surface is arranged as an arc surface along the circumference of the outer frame, the first side surface is arranged as an inwardly concave arc surface, and the first plate body and the second plate body are both arranged as arc plates; A first connecting structure is symmetrically arranged on both sides of the width of the first plate body, a second connecting structure is symmetrically arranged on both sides of the width of the second plate body, and a third connecting structure is symmetrically arranged on both sides of the width of the support body. The first connecting structure and the second connecting structure have the same structure and are both engaged with the third connecting structure.

[0012] Further, the first connection structure includes a first card slot and a first card block, the third connection structure includes a second card slot and a second card block, and the first card block and the second card block are respectively engaged with the second card slot and the first card slot; The first clamping slot and the first clamping block are arranged along the circumference of the outer frame, and the first clamping slot and the second clamping slot are both arranged as arc grooves, and the central angle corresponding to the arc surface thereof is greater than 90° and less than 180°.

[0013] Furthermore, the second butterfly-shaped protective cover comprises a second bottom surface and second side surfaces located on both sides of the width thereof, and the second bottom surface and the second side surfaces are both configured as arc surfaces and are respectively adapted to the second plate body and the first side surfaces; A second groove is disposed on a side of the second butterfly-shaped protective cover away from the second bottom surface. The second groove is disposed opposite to a side of the first butterfly-shaped protective cover and cooperates with the first groove to form an accommodating cavity.

[0014] Furthermore, three accommodating cavities are provided along the circumferential direction, and a third reinforcement member is provided in the accommodating cavity.

[0015] Furthermore, a central skeleton is provided at the central position of the skeleton cavity, the central skeleton is provided as a regular hexagonal prism structure, and its interior is hollow, and a fourth reinforcement is provided at the inner circle of the central skeleton; Three limiting plates are arranged on the central frame along its circumference and are located at its corners. Two adjacent limiting plates cooperate with the central frame to form a third frame groove, and the third frame groove is engaged with one side of the first butterfly-shaped sheath.

[0016] Furthermore, a third groove is provided on the inner wall of the protective sleeve corresponding to the first bottom surface of the support body, and a plurality of tear ropes are provided in the protective sleeve; The plurality of tear ropes are respectively arranged corresponding to the first plate body and the second plate body, and a first heat dissipation hole and a second heat dissipation hole are respectively opened on the first plate body and the second plate body.

[0017] The beneficial effects of the present invention are: In the present invention, the combined butterfly cable adopts a modular design and includes both a self-supporting butterfly cable structure and a non-self-supporting butterfly cable structure. By optimizing the appearance structure of the first butterfly cable unit and the second butterfly cable unit and the layout structure therebetween, the overall optical cable communication capacity is enhanced while reducing material consumption and cost.

[0018] After the outer protective sheath of the combined butterfly cable is stripped off and the outer frame is removed, it is convenient to separate the first butterfly cable unit or the second butterfly cable unit compactly arranged in the frame cavity for separate use, especially to strip off the suspension wire parts in the first butterfly cable unit for overhead laying of the overall combined butterfly cable, thereby enhancing the flexibility of the overall laying method of the combined butterfly cable.

[0019] During the laying process, when the first or second butterfly cable unit in the combined butterfly cable is split for use, the corresponding outer frame part is removed at the split position section, which does not affect the outer frame structure of other positions of the combined butterfly cable as a whole, and avoids other butterfly cable units being scattered outside after the optical cable is stripped. The frame cavity formed on the inner side of the outer frame realizes the orderly arrangement of the inner butterfly cable units, and provides support and protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the detachable combined butterfly optical cable in the present invention; Figure 2 It is an exploded schematic diagram of the detachable combined butterfly optical cable of the present invention; Figure 3 It is a schematic diagram of the structure of the first butterfly cable unit and the second butterfly cable unit in the present invention; Figure 4 It is a schematic diagram of the structure of the exoskeleton in the present invention; Figure 5 It is a schematic diagram of the splicing of the exoskeleton in the circumferential direction in the present invention; Figure 6 for Figure 5 A magnified view of the local structure at point A in the middle; Figure 7 It is a schematic diagram of the structure of the central skeleton in the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the detachable combined butterfly optical cable in the present invention.

[0022] Figure numerals: 1, first butterfly cable unit; 11, first butterfly sheath; 111, first protective body; 112, second protective body; 113, first groove; 12, suspension wire; 13, first optical fiber; 14, first reinforcement; 2, second butterfly cable unit; 21, second butterfly sheath; 211, second bottom surface; 212, second side surface; 213, second groove; 22, second optical fiber; 23, second reinforcement; 3, outer frame; 31, frame cavity; 311, first frame groove; 312, second frame groove; 313, accommodating cavity; 32, support Base body; 321, first bottom surface; 322, first side surface; 33, first plate body; 331, first heat dissipation hole; 34, second plate body; 341, second heat dissipation hole; 35, first connecting structure; 351, first card slot; 352, first card block; 36, second connecting structure; 37, third connecting structure; 371, second card slot; 372, second card block; 38, third reinforcement; 4, central skeleton; 41, limiting plate; 42, third skeleton groove; 43, fourth reinforcement; 5, protective cover; 51, third groove; 52, tear rope. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figures 1 to 8The detachable combined butterfly optical cable shown in the figure comprises a first butterfly cable unit 1, a second butterfly cable unit 2, an outer frame 3 and a protective cover 5. The outer frame 3 is annular and forms a frame cavity 31 on its inner side. The first butterfly cable unit 1 and the second butterfly cable unit 2 are both provided with a plurality of protective covers 5 in the frame cavity 31. The protective cover 5 is coated on the outer ring of the outer frame 3. The first butterfly cable unit 1 is provided with a self-supporting butterfly cable structure, comprising a first butterfly cover 11 and a suspension wire member 12 arranged at one end thereof. A first optical fiber 13 and two first reinforcements 13 are coated in the first butterfly cover 11. The first reinforcement members 14 are respectively located on both sides of the first optical fiber 13; the second butterfly cable unit 2 is configured as a non-self-supporting butterfly cable structure, including a second butterfly sheath 21 and a second optical fiber 22 and two second reinforcement members 23 coated therein, and the two second reinforcement members 23 are respectively located on both sides of the second optical fiber 22; three first butterfly cable units 1 are circumferentially arranged in the middle area of ​​the skeleton cavity 31, the head and tail ends of the three first butterfly cable units 1 are adjacent and arranged in a triangle, and the second butterfly cable units 2 are evenly arranged on the outer circles of the three first butterfly cable units 1 along the circumferential direction.

[0027] In the present invention, the combined butterfly cable adopts a modular design and includes both a self-supporting butterfly cable structure and a non-self-supporting butterfly cable structure. By optimizing the appearance structure of the first butterfly cable unit 1 and the second butterfly cable unit 2 and the layout structure therebetween, the overall optical cable communication capacity is enhanced while reducing material consumption and cost.

[0028] Furthermore, after stripping off the outer protective sheath 5 of the combined butterfly cable and removing the outer skeleton 3, the first butterfly cable unit 1 or the second butterfly cable unit 2 compactly arranged in the skeleton cavity 31 can be separated and used separately, especially the suspension wire member 12 in the first butterfly cable unit 1 can be stripped out for overhead installation of the overall combined butterfly cable, thereby enhancing the flexibility of the overall installation method of the combined butterfly cable.

[0029] During the laying process, when the first butterfly cable unit 1 or the second butterfly cable unit 2 in the combined butterfly cable is split for use, the corresponding part of the outer frame 3 is removed at the split position section, without affecting the outer frame 3 structure at other positions of the combined butterfly cable as a whole, so as to avoid other butterfly cable units being scattered outside after the optical cable is stripped. The frame cavity 31 formed on the inner side of the outer frame 3 is used to achieve orderly arrangement of the inner butterfly cable units, and provide support and protection effects.

[0030] In the present invention, if Figure 3 As shown, the first butterfly-shaped protective cover 11 includes a first protective body 111 and a second protective body 112 which are symmetrically arranged, and the first protective body 111 and the second protective body 112 are both arranged as regular hexagonal prism structures; the suspension wire member 12 is located on the side of the first protective body 111 away from the second protective body 112, and its outer contour is arranged as a circle inscribed in the outer contour of the first protective body 111, and symmetrical first grooves 113 are formed on both sides of the connection between the first protective body 111 and the second protective body 112.

[0031] The first butterfly cable unit 1 is configured as a self-supporting butterfly cable structure, with a first butterfly-shaped sheath 11 formed by two regular hexagonal prisms, and a suspension wire member 12 for overhead installation is provided at one end thereof. The three first butterfly cable units 1 arranged in a triangular pattern have their suspension wire members 12 arranged close to the inner wall of the outer frame 3, so that the suspension wire members 12 can be separated for overhead installation after the optical cable is stripped. Three circumferentially evenly distributed spaces are formed between the first butterfly cable unit 1 arranged in a triangular pattern and the outer frame 3 for arranging three second butterfly-shaped units, so that the second butterfly-shaped units of the non-self-supporting butterfly cable structure can be separated for use after the optical cable is stripped.

[0032] In this embodiment, if Figure 4 As shown, a first skeleton groove 311 and a second skeleton groove 312 are provided on the inner side of the outer skeleton 3, and the first skeleton groove 311 and the second skeleton groove 312 are alternately provided along the circumference of the outer skeleton 3; three first skeleton grooves 311 and three second skeleton grooves 312 are provided along the circumference of the outer skeleton 3, and are respectively provided corresponding to the suspension wire piece 12 and the second butterfly sheath 21.

[0033] See also Figure 5 As shown, the outer frame 3 includes a support body 32, a first plate body 33 and a second plate body 34 arranged along its circumference. Six support bodies 32 are arranged along the circumference of the outer frame 3, and the first plate body 33 and the second plate body 34 are alternately arranged between two adjacent support bodies 32; two adjacent support bodies 32 cooperate with the first plate body 33 arranged therebetween to form a first frame groove 311, and two adjacent support bodies 32 cooperate with the second plate body 34 arranged therebetween to form a second frame groove 312.

[0034] Three first frame grooves 311 and second frame grooves 312 are evenly arranged along the circumference of the outer frame 3, wherein the first frame groove 311 is used to limit the position of the hanging wire member 12 of the first butterfly cable unit 1, and the second frame groove 312 is used to limit the position of the second butterfly sheath 21 of the second butterfly cable unit 2. The outer frame 3 achieves the supporting effect of the overall structure through the support body 32, and cooperates with the first plate body 33 or the second plate body 34 between two adjacent support bodies 32 to form a ring-shaped outer frame 3 structure.

[0035] In the above embodiment, the support body 32 and the first plate body 33 or the second plate body 34 are connected by their own connection structures. Figure 5As shown, the circumferential side surface of the support body 32 includes a first bottom surface 321 and two symmetrically arranged first side surfaces 322, the first bottom surface 321 is arranged as an arc surface along the circumference of the exoskeleton 3, the first side surface 322 is arranged as a concave arc surface, the first plate body 33 and the second plate body 34 are both arranged as arc plates; the first connecting structure 35 is symmetrically arranged on both sides of the width of the first plate body 33, the second connecting structure 36 is symmetrically arranged on both sides of the width of the second plate body 34, and the third connecting structure 37 is symmetrically arranged on both sides of the width of the support body 32, the first connecting structure 35 and the second connecting structure 36 have the same structure, and both are engaged with the third connecting structure 37.

[0036] Specifically, Figure 6 As shown, the first connecting structure 35 includes a first slot 351 and a first block 352, and the third connecting structure 37 includes a second slot 371 and a second block 372. The first block 352 and the second block 372 are respectively engaged with the second slot 371 and the first slot 351; the first slot 351 and the first block 352 are arranged circumferentially along the outer skeleton 3, and the first slot 351 and the second slot 371 are both arranged as arc grooves, and the central angle corresponding to their arc surfaces is greater than 90° and less than 180°.

[0037] The support body 32, the first plate body 33 and the second plate body 34 in the outer skeleton 3 are respectively made of special extrusion molds, and the first slot 351 and the first block 352 in the first connecting structure 35 located on the width side of the first plate body 33 are arranged along its width direction, and the centers of the first slot 351 and the first block 352 are respectively arranged in opposite directions, so that the outer skeleton 3 can ensure the stability of the locking state between the connecting structures regardless of whether it is subjected to external pressure or internal pressure.

[0038] The central angle corresponding to the arc surfaces that engage with each other at the connecting structure is greater than 90° and less than 180°, thereby achieving the covering effect of the card slot on the card block in the engaged state, improving the engaging effect, and increasing the pressure-bearing area of ​​the connecting structure when the outer skeleton 3 is under pressure, thereby reducing the wear between the connecting structures.

[0039] During the optical cable splitting process, when it is necessary to carry out aerial laying, first peel off the outer protective sheath 5 of the optical cable, then release the splicing state of any first plate 33 in the outer frame 3, so that the suspension wire 12 of the first butterfly cable unit 1 is exposed, which is convenient for separating the suspension wire 12 for aerial laying; after taking out the suspension wire 12 for aerial laying from the optical cable, select the truncated first plate 33 of suitable length, re-splice it on the outer frame 3, and wrap the outer protective sheath 5 with tape to form a complete optical cable structure again, which is convenient for the layout planning of aerial laying of optical cables. Similarly, when splitting and using the second butterfly cable unit 2, perform similar operations on the second plate 34.

[0040] In this embodiment, if Figure 3 and Figure 4 As shown, the second butterfly-shaped cover 21 includes a second bottom surface 211 and second side surfaces 212 located on both sides of the width thereof, the second bottom surface 211 and the second side surface 212 are both configured as arc surfaces, and are respectively adapted to the second plate body 34 and the first side surface 322; a second groove 213 is provided on the side of the second butterfly-shaped cover 21 away from the second bottom surface 211, the second groove 213 is arranged opposite to one side of the first butterfly-shaped cover 11, and cooperates with the first groove 113 to form an accommodation cavity 313. Three accommodation cavities 313 are provided along the circumferential direction, and a third reinforcement member 38 is provided in the accommodation cavity 313.

[0041] The second butterfly sheath 21 forms a butterfly structure by a V-shaped second groove 213 disposed on one side thereof, and the first side surface 322 of the support body 32 in the second framework groove 312 cooperates with the inner arc surface of the second plate body 34 to realize the covering and limiting cooperation of the second side surface 212 and the second bottom surface 211 in the second butterfly sheath 21; the second butterfly sheath 21 is provided with a side of the second groove 213 abutting against the first butterfly sheath 11, so as to realize the compact arrangement of the first butterfly cable unit 1 and the second butterfly cable unit 2 in the framework cavity 31. The third reinforcement member 38 disposed in the accommodating cavity 313 improves the tensile strength of the optical cable.

[0042] As a preferred embodiment of the present invention, Figure 7 and Figure 8 As shown, a central skeleton 4 is arranged at the center position of the skeleton cavity 31. The central skeleton 4 is arranged as a regular hexagonal prism structure, and its interior is hollow. A fourth reinforcement 43 is arranged on the inner circle of the central skeleton 4; three limit plates 41 are arranged on the central skeleton 4 along its circumference, and are all located at its corners. Two adjacent limit plates 41 cooperate with the central skeleton 4 to form a third skeleton groove 42, and the third skeleton groove 42 is engaged with one side of the first butterfly sleeve 11.

[0043] The central skeleton 4 provided at the center of the optical cable provides support and protection for the combined butterfly cable unit, and the inner part thereof is hollow and provided with a fourth reinforcing member 43, so as to further improve the mechanical strength and tensile resistance. The outer skeleton 3 provided at the outer ring of the central skeleton 4 forms a stable skeleton cavity 31 capable of arranging a plurality of first butterfly cable units 1 and a plurality of second butterfly cable units 2.

[0044] A third groove 51 is provided on the inner wall of the protective cover 5 corresponding to the first bottom surface 321 of the support body 32, and a plurality of tear ropes 52 are provided inside the protective cover 5; the plurality of tear ropes 52 are respectively provided corresponding to the first plate body 33 and the second plate body 34, and a first heat dissipation hole 331 and a second heat dissipation hole 341 are respectively opened on the first plate body 33 and the second plate body 34.

[0045] The third groove 51 provided on the inner wall of the protective cover 5 facilitates the limiting connection between the outer frame 3 and the inner wall of the protective cover 5, and is specifically connected to the third groove 51 through the support body 32. The tear rope 52 provided in the protective cover 5 facilitates manual peeling of the required length of the optical cable protective cover 5 during the process of stripping the optical cable, and after the protective cover 5 is peeled off under the action of the tear rope 52, the first plate body 33 or the second plate body 34 in the structure of the outer frame 3 is just exposed; during the implementation process, it is possible to specifically distinguish whether the first plate body 33 or the second plate body 34 corresponds to the distance between two adjacent tear ropes 52, and then accurately split the first butterfly cable unit 1 or the second butterfly cable unit 2 inside the optical cable.

[0046] The first heat dissipation holes 331 and the second heat dissipation holes 341 respectively arranged on the first plate body 33 and the second plate body 34 can realize heat dissipation of the entire optical cable, and the heat dissipation holes can also assist in the removal of the plate body and the outer frame 3.

[0047] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A detachable combined butterfly optical cable, characterized in that: include: A first butterfly cable unit, a second butterfly cable unit, an outer frame and a protective cover, wherein the outer frame is annular and has an inner frame cavity formed therein, a plurality of the first butterfly cable unit and the second butterfly cable unit are disposed in the inner frame cavity, and the protective cover is covered on the outer ring of the outer frame; The first butterfly cable unit is configured as a self-supporting butterfly cable structure, including a first butterfly sheath and a suspension wire member arranged at one end thereof, wherein a first optical fiber and two first reinforcement members are coated in the first butterfly sheath, and the two first reinforcement members are respectively located on both sides of the first optical fiber; The second butterfly cable unit is configured as a non-self-supporting butterfly cable structure, including a second butterfly-shaped sheath, a second optical fiber and two second reinforcement members wrapped therein, wherein the two second reinforcement members are respectively located on both sides of the second optical fiber; Three first butterfly cable units are circumferentially arranged in the middle area of ​​the skeleton cavity, the three first butterfly cable units are adjacent to each other at the head and tail ends and arranged in a triangle, and the second butterfly cable units are evenly arranged on the outer circles of the three first butterfly cable units along the circumferential direction.

2. The detachable combined butterfly optical cable according to claim 1, characterized in that: The first butterfly-shaped protective cover comprises a first protective body and a second protective body which are symmetrically arranged, and the first protective body and the second protective body are both arranged in a regular hexagonal prism structure; The hanging wire member is located on a side of the first protective body away from the second protective body, and its outer contour is set to be a circle inscribed in the outer contour of the first protective body, and symmetrical first grooves are formed on both sides of the connection between the first protective body and the second protective body.

3. The detachable combined butterfly optical cable according to claim 2, characterized in that: A first frame groove and a second frame groove are arranged on the inner side of the outer frame, and the first frame groove and the second frame groove are arranged alternately along the circumference of the outer frame; The first frame groove and the second frame groove are each provided with three grooves along the circumference of the outer frame, and are respectively arranged corresponding to the suspension wire member and the second butterfly-shaped sheath.

4. The detachable combined butterfly optical cable according to claim 3, characterized in that: The outer frame includes a support body, a first plate body and a second plate body arranged along the circumference thereof, six support bodies are arranged along the circumference of the outer frame, and the first plate body and the second plate body are alternately arranged between two adjacent support bodies; The first plate body disposed between two adjacent support bodies cooperates to form the first frame groove, and the second plate body disposed between two adjacent support bodies cooperates to form the second frame groove.

5. The detachable combined butterfly optical cable according to claim 4, characterized in that: The circumferential side surface of the support body includes a first bottom surface and two first side surfaces symmetrically arranged, the first bottom surface is arranged as an arc surface along the circumference of the outer frame, the first side surface is arranged as an inwardly concave arc surface, and the first plate body and the second plate body are both arranged as arc plates; A first connecting structure is symmetrically arranged on both sides of the width of the first plate body, a second connecting structure is symmetrically arranged on both sides of the width of the second plate body, and a third connecting structure is symmetrically arranged on both sides of the width of the support body. The first connecting structure and the second connecting structure have the same structure and are both engaged with the third connecting structure.

6. The detachable combined butterfly optical cable according to claim 5, characterized in that: The first connection structure includes a first card slot and a first card block, and the third connection structure includes a second card slot and a second card block, and the first card block and the second card block are respectively engaged with the second card slot and the first card slot; The first clamping slot and the first clamping block are arranged along the circumference of the outer frame, and the first clamping slot and the second clamping slot are both arranged as arc grooves, and the central angle corresponding to the arc surface thereof is greater than 90° and less than 180°.

7. The detachable combined butterfly optical cable according to claim 5, characterized in that: The second butterfly-shaped protective cover comprises a second bottom surface and second side surfaces located on both sides of the width thereof, wherein the second bottom surface and the second side surfaces are both configured as arc surfaces and are respectively adapted to the second plate body and the first side surfaces; A second groove is disposed on a side of the second butterfly-shaped protective cover away from the second bottom surface. The second groove is disposed opposite to a side of the first butterfly-shaped protective cover and cooperates with the first groove to form an accommodating cavity.

8. The detachable combined butterfly optical cable according to claim 7, characterized in that: The accommodating cavities are each provided with three along the circumferential direction, and a third reinforcement member is arranged in the accommodating cavity.

9. The detachable combined butterfly optical cable according to claim 2, characterized in that: A central frame is arranged at the center of the frame cavity, the central frame is arranged as a regular hexagonal prism structure, and its interior is hollow, and a fourth reinforcement is arranged at the inner circle of the central frame; Three limiting plates are arranged on the central frame along its circumference and are located at its corners. Two adjacent limiting plates cooperate with the central frame to form a third frame groove, and the third frame groove is engaged with one side of the first butterfly-shaped sheath.

10. The detachable combined butterfly optical cable according to claim 5, characterized in that: A third groove is provided on the inner wall of the protective cover corresponding to the first bottom surface of the support body, and a plurality of tear ropes are provided in the protective cover; The plurality of tear ropes are respectively arranged corresponding to the first plate body and the second plate body, and a first heat dissipation hole and a second heat dissipation hole are respectively opened on the first plate body and the second plate body.

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