CN110542965A - Arthropod type double-bending-prevention optical cable for communication engineering - Google Patents
Arthropod type double-bending-prevention optical cable for communication engineering Download PDFInfo
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- CN110542965A CN110542965A CN201910836216.4A CN201910836216A CN110542965A CN 110542965 A CN110542965 A CN 110542965A CN 201910836216 A CN201910836216 A CN 201910836216A CN 110542965 A CN110542965 A CN 110542965A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4434—Central member to take up tensile loads
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Abstract
The invention discloses an arthropod type double-bending-proof optical cable for communication engineering, belonging to the technical field of communication engineering, which can realize the body structure of bionic arthropods, replace the traditional integral outer sheath structure of the optical cable with a multi-section type sub sheath structure, simultaneously utilize the cooperation between a multi-directional swinging rod and an interval rotation-limiting groove to limit the rotation angle between two adjacent sections of sub sheaths in a safe range on one hand, replace a large-amplitude corner by overlapping a plurality of sections of small-amplitude corners to avoid large-amplitude macro bending of the optical cable, only allow a certain deformation angle of a single-section sub sheath on the other hand to avoid large-amplitude micro bending of the optical cable, and avoid irregular fracture caused by long-term compression of the multi-directional swinging rod by arranging a cracking guide port and remedial measures in the multi-directional swinging rod to realize the double-bending-proof effect of optical cable signal transmission, the transmission loss and the probability of communication failure are obviously reduced.
Description
Technical Field
The invention relates to the technical field of communication engineering, in particular to an arthropod type double-bending-prevention optical cable for communication engineering.
Background
Since the 21 st century, the telecommunications industry has grown dramatically and optical cables, which are manufactured to meet optical, mechanical or environmental performance specifications, are widely used in a variety of applications, and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as a telecommunications cable assembly. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.
The optical cable is noticed that generally bending is avoided too much in the use process, because the optical fiber inside the optical cable is realized through the total reflection principle of light, the light ray is injected perpendicular to the end face of the optical fiber, and when coinciding with the axis of the optical fiber, the light ray is transmitted forwards along the axis, the bending degree is too great, and partial light ray can not normally pass through, so that the light power is reduced, further the signal loss is caused, when the bending amplitude is too great, even the light transmission is damaged, the communication fault is caused, and huge loss can be caused.
Generally speaking, the bending problem of optical fibers in an optical cable is divided into two types, one is micro-bending of the optical fibers, the micro-bending of the optical fibers is generally caused by excessive pressure on the optical fibers, the micro-bending of the optical fibers can cause signal quality reduction, and the problem is difficult to find by naked eyes.
Disclosure of Invention
1. technical problem to be solved
aiming at the problems in the prior art, the invention aims to provide an arthropod type double-bending-prevention optical cable for communication engineering, which can realize the body structure of a bionic arthropod, replace the traditional integral outer sheath structure of the optical cable with a multi-section type sub sheath structure, simultaneously utilize the matching between a multi-section swinging rod and an interval rotation limiting groove, limit the rotation angle between two adjacent sub sheaths within a safe range on the one hand, replace a large-amplitude corner by overlapping a plurality of small-amplitude corners to avoid the large-amplitude macro bending of the optical cable, only allow a certain deformation angle of a single-section sub sheath on the other hand to avoid the large-amplitude micro bending of the optical cable, and avoid the irregular fracture generated by long-term pressure on the multi-section swinging rod by arranging a cracking guide port and remedial measures inside the multi-section swinging rod to realize the double-bending-prevention effect on the optical cable signal transmission, the transmission loss and the probability of communication failure are obviously reduced.
2. Technical scheme
in order to solve the above problems, the present invention adopts the following technical solutions.
An arthropod type double-bending-prevention optical cable for communication engineering comprises a polyethylene outer sheath, wherein a functional layer is fixedly connected to the inner end of the polyethylene outer sheath, a polyethylene inner sheath is arranged on the inner side of the functional layer, a plurality of thin round steel wires distributed in an annular array are fixedly connected between the functional layer and the polyethylene inner sheath, a loose tube is fixedly connected to the inner end of the polyethylene inner sheath, loose tube fillers are filled in the inner end of the loose tube, a central reinforcing core and a plurality of cable cores distributed in the annular array are arranged in the loose tube fillers, the polyethylene outer sheath comprises a plurality of sub-sheaths, a hemispherical groove is formed in one end of each sub-sheath, a fixing ball is fixedly connected in the hemispherical groove, an interval rotation limiting groove is formed in the other end of each sub-sheath, a multidirectional swinging rod is fixedly connected to one end, away from the hemispherical groove, a moving ball is fixedly connected to one end, away from the, can realize bionical arthropod's body structure, replace the traditional integral oversheath structure of optical cable for multisection formula sub sheath structure, utilize the cooperation between multidirectional swinging arms and the interval limit turn trough simultaneously, on the one hand with the turned angle restriction between the adjacent two sections sub sheath in safety range, through the corner stack of multisection small-range replace corner by a wide margin, realize avoiding the macrobending by a wide margin of optical cable, on the other hand only allows the certain deformation angle of single section sub sheath, realize avoiding the microbending by a wide margin of optical cable, and through set up fracture guide way and remedial measure inside the multidirectional swinging arms, avoid the long-term irregular fracture that produces of pressurized of multidirectional swinging arms, realize the two curved effects of preventing to optical cable signal transmission, show the probability that reduces transmission loss and communication fault and take place.
Furthermore, a central groove is formed in the inner end of the multidirectional swinging rod, a glass rod is arranged on the inner side of the central groove, elastic connecting blocks are fixedly connected between the left end and the right end of the glass rod and two side walls of the central groove, a liquid storage tank is formed in the inner end of the glass rod, a quick adhesive is filled in the liquid storage tank, when the multidirectional swinging rod is pressed excessively for a long time and cracks appear, the glass rod can break and flow out of the quick adhesive, the quick adhesive rapidly flows along the cracks under the action of moisture in the air and is solidified, the effect of bonding the cracks is achieved, and the reinforcing effect is achieved for the multidirectional swinging rod.
furthermore, it has breakable mouthful to cut on the central groove rampart, reservoir and breakable mouthful all are located the central point of multidirectional swinging arms and put, and the crack through setting up breakable mouthful guide multidirectional swinging arms produces the position, and convenient quick gluing agent can fix a point and repair.
furthermore, the section of the fragile port is in an inverted cone shape, the width of the fragile port is 0.05mm-0.1mm, the depth of the fragile port is 0.1mm-0.15mm, the diameter of the interval rotation limiting groove is gradually increased along the depth direction, and the influence on the mechanical strength of the multidirectional swinging rod is reduced as much as possible while the crack is guided to be generated.
Further, the inner arc stress pole that still fixedly connected with a plurality of annular array distributes of multidirectional swinging arms, the quantity of arc stress pole is 4-8, and all is in under the deformation state, and arc stress pole plays the additional action to multidirectional swinging arms, sets up and integrated into one piece in the preparation of multidirectional swinging arms to exert the internal stress of good deformation, carry out stress when multidirectional swinging arms deformation and offset.
Furthermore, the interval rotation limiting groove is in a frustum shape, the notch of the interval rotation limiting groove is matched with the fixed ball, the cross section of the bottom of the interval rotation limiting groove is in a minor arc shape, the angle corresponding to the minor arc is 20-30 degrees, the shape of the interval rotation limiting groove allows the multi-directional swinging rod to rotate to any angle, and the rotating angle can only be 10-15 degrees, namely the single rotating angle of the limiting sub-sheath can only be 10-15 degrees.
Furthermore, the length of the sub sheath is 5-10mm, and the ratio of the depth of the interval rotation limiting groove to the length of the sub sheath is 1: 1.2-1.4.
Furthermore, a solid net is fixedly connected to the inner wall of the interval rotation limiting groove, the solid net is made of a metal material with low elastic modulus, and the solid net plays a role in protecting the interval rotation limiting groove, is used for maintaining the shape of the interval rotation limiting groove, and disperses pressure applied by the multidirectional swinging rods and the moving balls.
Furthermore, the left end and the right end of each sub-sheath are respectively coated with an annular self-repairing sealing adhesive layer, the thickness of each annular self-repairing sealing adhesive layer is 0.1-0.2mm, on one hand, seamless connection between the sub-sheaths is achieved, on the other hand, the self-repairing sealing effect can be achieved, and even if cracks occur due to external force, the cracks can be automatically repaired and filled.
further, the annular self-repairing sealing adhesive layer comprises the following components in parts by weight: 30-35 parts of water-swellable polyurethane sealant, 0.2-0.5 part of tackifier, 0.2-0.5 part of nano-scale silicon dioxide powder, 25-35 parts of nano-scale montmorillonite powder, 0.05-0.1 part of super absorbent resin, 2-5 parts of cement-based permeable crystalline master batch and 0.02-0.05 part of anti-aging agent.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme can realize bionical arthropod's body structure, replace the traditional integral oversheath structure of optical cable for multisection formula sub-sheath structure, utilize the cooperation between multidirectional swinging arms and the interval restricted turn trough simultaneously, on the one hand with the turned angle restriction between the adjacent two sections sub-sheaths in safety range, through the corner stack of multisection small-range substitution corner by a wide margin, realize avoiding the macrobending by a wide margin of optical cable, on the other hand only allows the certain deformation angle of single section sub-sheath, realize avoiding the microbending by a wide margin of optical cable, and through set up fracture guide way and remedial measure inside the multidirectional swinging arms, avoid the irregular fracture that multidirectional swinging arms long-term pressurized produced, realize the two curved effects of preventing to optical cable signal transmission, show the probability that reduces transmission loss and communication fault and take place.
(2) The inner excavation of multidirectional swinging arms has the central groove, central inslot side is provided with the glass pole, fixedly connected with elastic connection piece between both ends and the central groove both sides wall about the glass pole, the inner excavation of glass pole has the reservoir, the reservoir intussuseption is filled with quick gluing agent, when the long-term too big appearance crack of pressurized of multidirectional swinging arms, the glass pole can break thereupon and flow out quick gluing agent, trickle and solidify along the crack rapidly under the effect of moisture in the air, play the cracked effect of bonding, play reinforced effect for multidirectional swinging arms.
(3) The fragile mouth is dug on the central groove rampart, and reservoir and fragile mouth all are located the central point of multidirectional swinging arms and put, and the crack through setting up fragile mouth and guiding multidirectional swinging arms produces the position, and convenient quick gluing agent can fix a point and repair.
(4) The section of the fragile opening is in an inverted cone shape, the width of the fragile opening is 0.05mm-0.1mm, the depth of the fragile opening is 0.1mm-0.15mm, the diameter of the interval rotation limiting groove is gradually increased along the depth direction, and the influence on the mechanical strength of the multidirectional swinging rod is reduced as much as possible while the crack is guided to be generated.
(5) The inner end of the multidirectional swinging rod is fixedly connected with a plurality of arc stress rods distributed in an annular array mode, the number of the arc stress rods is 4-8, the arc stress rods are all in a deformation state and play a role in reinforcing the multidirectional swinging rod, the arc stress rods are arranged and integrally formed in the preparation process of the multidirectional swinging rod, deformed internal stress is applied, and stress offset is carried out when the multidirectional swinging rod deforms.
(6) The interval rotation limiting groove is in a frustum shape, the groove opening of the interval rotation limiting groove is matched with the fixed ball, the section shape of the bottom of the interval rotation limiting groove is in a minor arc shape, the angle corresponding to the minor arc is 20-30 degrees, the shape of the interval rotation limiting groove allows the multi-directional swinging rod to rotate to any angle, and the rotating angle can only be 10-15 degrees, namely the single rotating angle of the limiting sub-sheath can only be 10-15 degrees.
(7) The length of the sub sheath is 5-10mm, and the ratio of the depth of the interval rotation limiting groove to the length of the sub sheath is 1: 1.2-1.4.
(8) The inner wall of the interval rotation limiting groove is fixedly connected with a fixed net which is made of metal materials with low elastic modulus, and the fixed net plays a role in protecting the interval rotation limiting groove, is used for maintaining the shape of the interval rotation limiting groove and dispersing pressure applied by the multidirectional swinging rod and the movable ball.
(9) The left end and the right end of each sub-sheath are coated with an annular self-repairing sealing adhesive layer, the thickness of each annular self-repairing sealing adhesive layer is 0.1-0.2mm, on one hand, seamless connection between the sub-sheaths is achieved, on the other hand, the self-repairing sealing effect can be achieved, and even if cracks occur due to external force, the cracks can be automatically repaired and filled.
(10) The annular self-repairing sealing adhesive layer comprises the following components in parts by weight: 30-35 parts of water-swellable polyurethane sealant, 0.2-0.5 part of tackifier, 0.2-0.5 part of nano-scale silicon dioxide powder, 25-35 parts of nano-scale montmorillonite powder, 0.05-0.1 part of super absorbent resin, 2-5 parts of cement-based permeable crystalline master batch and 0.02-0.05 part of anti-aging agent.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a portion of the present invention;
FIG. 3 is a schematic view of the internal structure of the multi-directional oscillating lever of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic structural view of the two-joint sheath of the present invention in a separated state;
FIG. 6 is a structural view of the multi-section sheath in a linear state;
FIG. 7 is a structural diagram of a multi-segment sheath of the present invention in a bent state;
FIG. 8 is a schematic structural diagram of the interval rotation limiting groove portion of the present invention.
The reference numbers in the figures illustrate:
The self-repairing composite cable comprises a sub-sheath 1, a functional layer 2, a thin round steel wire 3, a polyethylene inner sheath 4, a loose tube 5, a cable core 6, a loose tube filler 7, a central reinforcing core 8, an interval rotation limiting groove 9, a fixing ball 10, a multidirectional swinging rod 11, a movable ball 12, a solid type net 13, an arc stress rod 14, a central groove 15, a glass rod 16, a liquid storage tank 17, a quick adhesive 18, a fragile opening 19 and an annular self-repairing sealant layer 20.
Detailed Description
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.
Example 1:
Referring to fig. 1, an arthropod type double-bending-prevention optical cable for communication engineering includes a polyethylene outer sheath, a functional layer 2 is fixedly connected to the inner end of the polyethylene outer sheath, technicians can set the functional layer according to actual use conditions of the optical cable, for example, the functional layer can be set as a waterproof layer in a high humidity environment, a polyethylene inner sheath 4 is arranged on the inner side of the functional layer 2, a plurality of thin round steel wires 3 distributed in an annular array are fixedly connected between the functional layer 2 and the polyethylene inner sheath 4, the function of improving mechanical strength of the optical cable, particularly tensile strength and shear strength is achieved, a loose tube 5 is fixedly connected to the inner end of the polyethylene inner sheath 4, a loose tube filler 7 is filled in the inner end of the loose tube 5, and a central reinforcing core 8 and a plurality of cable cores 6 distributed in.
Referring to fig. 2, the polyethylene outer sheath comprises a plurality of sub-sheaths 1, one end of each sub-sheath 1 is provided with a hemispherical groove, a fixed ball 10 is fixedly connected in the hemispherical groove, the other end of each sub-sheath 1 is provided with a section rotation limiting groove 9, one end of each fixed ball 10, which is far away from the hemispherical groove, is fixedly connected with a multidirectional swinging rod 11, the section rotation limiting groove 9 and the multidirectional swinging rod 11 are matched with each other to realize the fixed angle rotation limiting function of the sub-sheath 1, one end of the multidirectional swinging rod 11, which is far away from the fixed ball 10, is fixedly connected with a moving ball 12, the moving ball 12 plays a role of reducing friction force during rotation, the length of the sub-sheath 1 is 10mm, the ratio of the depth of the section rotation limiting groove 9 to the length of the sub-sheath 1 is 1:1.2, the fixed ball 10, the multidirectional swinging rod 11 and the moving ball 12 are all made of plastic materials, referring to fig. 8, the section rotation limiting groove 9 is of a frustum shape, the groove opening of the section rotation limiting groove 9, the angle corresponding to the minor arc is 20 degrees, the shape of the interval rotation limiting groove 9 allows the multi-directional oscillating rod 11 to rotate to any angle, the rotating angle can only be 10 degrees, namely, the single rotating angle of the limiting sub-sheath 1 can only be 10 degrees, the inner wall of the interval rotation limiting groove 9 is fixedly connected with a fixing net 13, the fixing net 13 is made of a metal material with low elastic modulus, and the fixing net 13 plays a role of protecting the interval rotation limiting groove 9 and is used for maintaining the shape of the interval rotation limiting groove and dispersing the pressure applied by the multi-directional oscillating rod 11 and the movable ball 12.
Referring to fig. 3-4, a central groove 15 is cut at the inner end of the multi-directional oscillating rod 11, a glass rod 16 is arranged at the inner side of the central groove 15, elastic connecting blocks are fixedly connected between the left end and the right end of the glass rod 16 and two side walls of the central groove 15, a liquid storage tank 17 is cut at the inner end of the glass rod 16, a rapid adhesive 18 is filled in the liquid storage tank 17, when the multi-directional oscillating rod 11 is pressed excessively and cracks appear for a long time, the glass rod 16 can break and flow out the rapid adhesive 18, the rapid adhesive can rapidly flow and solidify along the cracks under the action of moisture in the air, the effect of bonding the cracks is achieved, the multi-directional oscillating rod 11 is strengthened, a fragile opening 19 is cut on the annular wall of the central groove 15, the liquid storage tank 17 and the fragile opening 19 are both located at the central position of the multi-directional oscillating rod 11, the position of the crack of the multi-directional oscillating rod, the cross sectional shape of breakable mouth 19 is the back taper, the width of breakable mouth 19 is 0.05mm, the degree of depth of breakable mouth 19 is 0.1mm, and interval limit for rotation groove 9 increases along degree of depth direction diameter gradually, reduce the influence to multidirectional swinging arms 11 mechanical strength as far as possible when leading the crack to produce, the inner arc stress pole 14 that still fixedly connected with a plurality of annular array distribute of multidirectional swinging arms 11, the quantity of arc stress pole 14 is 4-8, and all be in under the deformation state, arc stress pole 14 plays the additional strengthening to multidirectional swinging arms 11, set up and integrated into one piece in the preparation of multidirectional swinging arms 11, and exert the internal stress of good deformation, carry out stress offset when multidirectional swinging arms 11 deform.
Referring to fig. 5, the left end and the right end of each sub-sheath 1 are coated with an annular self-repairing sealant layer 20, and the thickness of each annular self-repairing sealant layer 20 is 0.1mm, so that on one hand, the seamless connection between the sub-sheaths 1 is achieved, on the other hand, the self-repairing sealant layer can achieve the self-repairing sealing effect, even if a crack occurs due to an external force, the crack can be automatically repaired and filled, and the annular self-repairing sealant layer 20 comprises the following components in parts by weight: 30 parts of water-swellable polyurethane sealant, 0.2 part of tackifier, 0.2 part of nano-scale silicon dioxide powder, 25 parts of nano-scale montmorillonite powder, 0.05 part of super absorbent resin, 2 parts of cement-based permeable crystalline master batch and 0.02 part of anti-aging agent.
When the optical cable is stressed and bent in the using process, please refer to fig. 6-7, the micro-angle rotation between a pair of sub-sheaths 1 is realized through the swinging of the multi-directional swinging rod 11 in the interval rotation limiting groove 9, a larger bending angle can be decomposed through the multi-section sub-sheaths 1, the excessive bending of the optical fiber in the cable core 6 can be reduced through the bending superposition between the sub-sheaths 1, on one hand, the bending angle of the optical fiber is controlled within the angle of lossless transmission, and on the other hand, the bending of the optical cable is controlled within the allowed bending curvature radius; from the single sub-sheath 1, due to the reinforcement of the multidirectional swinging rod 11 and the size limitation of the sub-sheath 1, the single-point micro-bending phenomenon is difficult to occur, so that the micro-bending phenomenon generated after the optical fiber receives excessive pressure is effectively avoided.
The bionic arthropod body structure can be realized, the traditional integral outer sheath structure of the optical cable is replaced by a multi-section type sub sheath structure, meanwhile, the cooperation between the multidirectional swinging rod 11 and the interval rotation limiting groove 9 is utilized, on one hand, the rotation angle between two adjacent sections of sub sheaths 1 is limited in a safety range, and a large-amplitude corner is replaced by overlapping of a plurality of sections of small-amplitude corners, so that large-amplitude macro bending of the optical cable is avoided, on the other hand, only a certain deformation angle of the single-section sub sheath 1 is allowed, so that large-amplitude micro bending of the optical cable is avoided, and in addition, a cracking guide port and a remedial measure are arranged in the multidirectional swinging rod 11, so that irregular fracture caused by long-term pressure on the multidirectional swinging rod 11 is avoided, the double bending prevention effect on optical cable signal transmission is realized, and the probability of transmission loss and communication fault occurrence.
Example 2:
The embodiment 1 is adopted as a key node in the communication engineering, a solid multidirectional swinging rod 11 can be directly adopted as a non-key node, and the rest parts are consistent with the embodiment 1, so that the cost can be saved.
the foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. the utility model provides an arthropod prevents two curved type optical cables for communication engineering, includes polyethylene oversheath, its characterized in that: the inner side of the polyethylene outer sheath is fixedly connected with a functional layer (2), a polyethylene inner sheath (4) is arranged on the inner side of the functional layer (2), a plurality of thin round steel wires (3) distributed in an annular array are fixedly connected between the functional layer (2) and the polyethylene inner sheath (4), a loose tube (5) is fixedly connected to the inner end of the polyethylene inner sheath (4), a loose tube filler (7) is filled at the inner end of the loose tube (5), a central reinforcing core (8) and a plurality of cable cores (6) distributed in an annular array are arranged in the loose tube filler (7), the polyethylene outer sheath comprises a plurality of sub-sheaths (1), one end of each sub-sheath (1) is provided with a semi-sphere groove, a fixed ball (10) is fixedly connected in the semi-sphere groove, an interval rotation limiting groove (9) is formed at the other end of each sub-sheath (1), and one end, far away from the semi-sphere groove, of the fixed ball (10, one end of the multi-directional swinging rod (11) far away from the fixed ball (10) is fixedly connected with a moving ball (12).
2. The arthropod double-bend prevention optical cable according to claim 1, wherein: multidirectional swinging arms (11) inner is excavated there is central groove (15), central groove (15) inboard is provided with glass pole (16), fixedly connected with elastic connection piece between both ends and central groove (15) both sides wall about glass pole (16), the excavation has reservoir (17) in glass pole (16) inner, reservoir (17) intussuseption is filled with quick gluing agent (18).
3. The arthropod double-bend-proof optical cable according to claim 2, wherein: the wall of the central groove (15) is provided with a fragile opening (19), and the liquid storage tank (17) and the fragile opening (19) are both positioned at the central position of the multidirectional swinging rod (11).
4. The arthropod double-bend prevention optical cable according to claim 3, wherein: the cross-sectional shape of breakable mouthful (19) is the back taper, the width of breakable mouthful (19) is 0.05mm-0.1mm, the degree of depth of breakable mouthful (19) is 0.1mm-0.15mm, and interval limit groove (9) along degree of depth direction diameter crescent.
5. The arthropod double-bend prevention optical cable according to claim 1, wherein: the inner end of the multidirectional swinging rod (11) is fixedly connected with a plurality of arc stress rods (14) distributed in an annular array mode, the number of the arc stress rods (14) is 4-8, and the arc stress rods are all in a deformation state.
6. The arthropod double-bend prevention optical cable according to claim 1, wherein: the interval rotation limiting groove (9) is of a frustum shape, the groove opening of the interval rotation limiting groove (9) is matched with the fixed ball (10), the section shape of the bottom of the interval rotation limiting groove (9) is of a minor arc shape, and the angle corresponding to the minor arc is 20-30 degrees.
7. The arthropod double-bend prevention optical cable according to claim 1, wherein: the length of the sub-sheath (1) is 5-10mm, and the ratio of the depth of the interval rotation limiting groove (9) to the length of the sub-sheath (1) is 1: 1.2-1.4.
8. The arthropod double-bend prevention optical cable according to claim 1, wherein: the inner wall of the interval rotation limiting groove (9) is fixedly connected with a solid net (13), and the solid net (13) is made of a metal material with low elastic modulus.
9. The arthropod double-bend prevention optical cable according to claim 1, wherein: the left end and the right end of the sub-sheath (1) are respectively coated with an annular self-repairing sealing adhesive layer (20), and the thickness of the annular self-repairing sealing adhesive layer (20) is 0.1-0.2 mm.
10. the arthropod double-bend prevention optical cable according to claim 9, wherein: the annular self-repairing sealing adhesive layer (20) comprises the following components in parts by weight: 30-35 parts of water-swellable polyurethane sealant, 0.2-0.5 part of tackifier, 0.2-0.5 part of nano-scale silicon dioxide powder, 25-35 parts of nano-scale montmorillonite powder, 0.05-0.1 part of super absorbent resin, 2-5 parts of cement-based permeable crystalline master batch and 0.02-0.05 part of anti-aging agent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751945A (en) * | 2020-06-17 | 2020-10-09 | 王海燕 | Multi-node rib-like bending-proof communication optical fiber |
| CN112927843A (en) * | 2021-02-05 | 2021-06-08 | 陆兵 | Self-adaptive multidirectional bending-resistant cable |
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| CN116224514B (en) * | 2023-03-15 | 2023-08-29 | 上海锦鑫管业有限公司 | Bundling pipe |
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