CN214586147U

CN214586147U - Protective sleeve for OPGW optical fiber

Info

Publication number: CN214586147U
Application number: CN202120695108.2U
Authority: CN
Inventors: 苗勇; 齐生鹏; 金志杰; 高冰; 董志敏; 张树勇; 蔡蕊; 卢兵; 刘宁; 姚亚青; 杜帅兵; 陈瑶; 刘福盛; 高瑞超
Original assignee: State Grid Corp of China SGCC; State Grid Hebei Electric Power Co Ltd; Hengshui Power Supply Co of State Grid Hebei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Hebei Electric Power Co Ltd; Hengshui Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-02
Anticipated expiration: 2031-04-06

Abstract

The utility model provides a protective sheath for OPGW optic fibre belongs to optic fibre protection technical field, including the reel curls by flexible material and has the inside passage that can hold OPGW optic fibre, and the number of curls circle of reel is greater than the round and is less than two circles, and the initiating terminal and the termination end of flexible material are equipped with the combination tooth that can combine each other, and the reel can make OPGW optic fibre get into the inside passage when expanding; the big end of the conical end is connected to the end part of the winding drum, and the small end is used for being inserted into an optical fiber protection tube of the OPGW optical fiber. The number of turns of reel sets up to be greater than the round and is less than two circles, makes its internal passageway pass through the OPGW optic fibre of certain core number scope, and combines the tooth and can wrap up its inside OPGW optic fibre tightly. The large end of the conical end head is connected to the end of the winding drum, and the small end of the conical end head can be easily inserted into the OPGW optical fiber protective tube, so that the OPGW optical fiber is practically protected.

Description

Protective sleeve for OPGW optical fiber

Technical Field

The utility model belongs to the technical field of the optical fiber protection, more specifically say, relate to a protective sheath for OPGW optic fibre.

Background

OPGW optical cable is optical cable composite overhead ground wire, the optical cable is in the fusion process, need to make inside OPGW optic fibre expose and be used for the butt fusion with the optical fiber protection tube pinch-off, because the optical fiber protection tube is stainless steel pipe or aluminum pipe, the fault after the pinch-off is sharp, probably produce the friction between OPGW optic fibre and the fault, especially in the great region of sand wind, there is the risk that the optic fibre loss is big or interrupt, the OPGW optic fibre sheath of current transparent rubber tube passes OPGW optic fibre in the hole after inserting OPGW optic fibre protection tube, but if the diameter setting of this kind of OPGW optic fibre sheath is less, easily cause when the core number is more, the problem that OPGW optic fibre can not penetrate OPGW optic fibre protective sheath, if the diameter sets up when great, OPGW optic fibre protective sheath is difficult for penetrating in the OPGW optic fibre protective sheath, make the problem of OPGW by the cross-section damage of OPGW optic fibre protection tube.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easily penetrate protective sheath that is used for OPGW optic fibre of optic fibre.

In order to achieve the above object, the utility model adopts the following technical scheme:

a protective jacket for OPGW optical fibers, comprising:

the optical fiber expanding device comprises a winding drum, a first fixing device and a second fixing device, wherein the winding drum is formed by winding a flexible material and is provided with an internal channel capable of accommodating an OPGW optical fiber, the number of winding turns of the winding drum is more than one turn and less than two turns, the starting end and the terminating end of the flexible material are provided with combining teeth capable of being combined with each other, and the winding drum can enable the OPGW optical fiber to enter the internal channel when being expanded;

and the large end of the conical end is connected to the end part of the winding drum, and the small end of the conical end is used for being inserted into an optical fiber protection pipe of the OPGW optical fiber.

As a specific embodiment of the application, the outer side of the terminal end of the winding drum is provided with a pull strip for unwinding the winding drum.

As a specific embodiment of the present application, the coupling teeth include a first coupling tooth provided outside the start end of the roll and a second coupling tooth provided inside the end of the roll.

As a specific embodiment of the present application, the coupling teeth are serrated.

As a particular embodiment of the present application, the conical tip is provided with a longitudinal notch.

As a specific embodiment of this application, the conical end the one side of longitudinal notch is equipped with the toper arch, and the offside is equipped with the confession the protruding male round hole of toper, the round hole diameter with the bellied tip diameter of toper is the same, the bellied little terminal surface of toper is close to the round hole.

As a specific embodiment of the application, the conical end head comprises a semi-cylindrical part used for being connected with the end surface of the winding drum and a conical drum part smoothly connected with the semi-cylindrical part.

As a specific embodiment of this application, the reel tip outside is equipped with the jack catch to circumference, the toper end the inboard circumference of semicircle barrel portion be equipped with the draw-in groove of jack catch joint.

As a specific embodiment of the present application, the flexible material is rubber.

As a specific embodiment of the present application, the roll is an extruded roll.

The utility model provides a pair of a protective sheath for OPGW optic fibre's beneficial effect lies in: compared with the prior art, the utility model provides a reel is curled by flexible material and is formed and have the inside passage that can hold optic fibre, and when the termination of pulling reel was held, the reel was expanded for in OPGW optic fibre got into the inside passage, set up the number of turns of reel into being greater than the round and being less than two circles, make its OPGW optic fibre that can make its inside passage can pass through certain core number scope. And in order to guarantee that the reel can wrap the OPGW optical fibers with different core numbers, the OPGW optical fibers in the reel can be tightly wrapped, and the starting end and the terminating end of the reel are provided with combining teeth which can be combined with each other. The big end of the conical end head is connected to the end of the winding drum, and the small end of the conical end head can be easily inserted into the OPGW optical fiber protective tube, so that the OPGW optical fiber is practically protected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a protective sheath for an OPGW optical fiber according to an embodiment of the present invention;

FIG. 2 is a left side view of the spool of FIG. 1;

fig. 3 is a schematic view of the structure of the conical tip of fig. 1.

In the figure: 1. a tapered end; 11. a semi-cylindrical portion; 111. a card slot; 12. a conical cylinder part; 121. a longitudinal notch; 122. a conical projection; 123. a circular hole; 2. a reel; 21. an internal channel; 22. a starting end; 23. a terminating end; 24. a first coupling tooth; 25. a second coupling tooth; 26. bracing; 27. a claw is provided.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1 shows a specific embodiment of a protective sheath for OPGW optical fiber, which includes a winding drum 2 and a tapered end 1, wherein the winding drum 2 is formed by winding a flexible material and has an internal channel 21 capable of accommodating OPGW optical fiber, the winding number of the winding drum 2 is more than one turn and less than two turns, the starting end 22 and the terminating end 23 of the flexible material are provided with engaging teeth capable of engaging with each other, and the winding drum 2 can enable the OPGW optical fiber to enter the internal channel 21 when being unwound; the large end of the conical end head 1 is connected to the end part of the winding drum 2, and the small end is used for being inserted into an optical fiber protection tube of an OPGW optical fiber.

Above-mentioned reel 2 in a kind of protective sheath for OPGW optic fibre is curled by flexible material and is formed and have the inside passage 21 that can hold OPGW optic fibre, when the termination end 23 of pulling reel 2, reel 2 is unrolled, can make OPGW optic fibre get into inside passage 21, sets up the number of turns of reel 2 and is greater than the round and less than two circles for inside passage 21 can be through the OPGW optic fibre of certain core number scope. And in order to guarantee that the reel 2 can wrap the OPGW optical fibers with different core numbers, the OPGW optical fibers in the reel can be tightly wrapped, combination teeth capable of being combined with each other are arranged at the starting end 22 and the terminating end 23 of the reel 2, and after the OPGW optical fibers enter the protective sleeve for the OPGW optical fibers, the position relation of the combination teeth is adjusted, so that the OPGW optical fibers in the protective sleeve for the OPGW optical fibers can be tightly wrapped. The tip of 1 main aspects of conical tip wherein connect in reel 2, and the tip of conical tip 1 can insert the optic fibre protective tube of OPGW optic fibre easily in, can be used for the whole prerequisite of wrapping up of the protective sheath of OPGW optic fibre by one kind at OPGW optic fibre in the axial under, can also make OPGW optic fibre separate with the optic fibre protective tube section to reach and play tangible guard action to OPGW optic fibre.

To facilitate unwinding of the reel 2, a pull-string 26 is provided outside the terminating end 23 of the reel 2, as shown in fig. 2.

The brace 26 may be a rectangular brace 26 at an angle to the terminal end 23 of the reel 2, although for grasping convenience, an arc-shaped grasping handle may be provided on the brace 26. During operation, the reel 2 can be unwound by pulling the pull-string 26 in the opposite direction to the self-winding of the reel 2, and when the OPGW fiber is to be wrapped, the pull-string 26 outside the terminating end 23 of the reel 2 can be gripped, and the starting end 22 of the reel 2 can be unwound, so that the starting end 22 is wound inward to wrap the OPGW fiber.

As shown in fig. 2, after the optical fiber is wrapped by the winding drum 2, the unwound part tends to recover the curl, so the optical fiber is wrapped, in order to increase the bonding force existing between the starting end 22 and the terminating end 23 of the winding drum 2 after the optical fiber is wrapped by the winding drum 2, the starting end 22 and the terminating end 23 are provided with bonding teeth which are bonded with each other, it should be noted that, considering that the bonding teeth cannot damage the OPGW optical fiber inside the winding drum 2, it is preferable to provide more first bonding teeth 24 along the outer side of the starting end 22 of the winding drum 2, and less second bonding teeth 25 along the inner side of the terminating end 23 of the winding drum 2. Thus, when the degree of curling of the reel 2 needs to be adjusted, the position relation of the combination between the first combination tooth 24 and the second combination tooth 25 can be adjusted, and when the number of OPGW optical fiber cores is small, the first coupling tooth 24 can be moved inwardly with respect to the second coupling tooth 25, and when the number of OPGW optical fiber cores is large, the first coupling tooth 24 can be moved outwardly with respect to the second coupling tooth 25, since the second coupling tooth 25 is disposed inside the terminating end 23, in order to allow a protective sheath for OPGW optical fibers to protect OPGW optical fibers within a certain core count from passing through, but not damaging the OPGW optical fibers inside, the number of the second engaging teeth 25 can be set to satisfy the requirement of sufficient engaging force with the first engaging teeth 24, the first engaging teeth 24 can adjust the space size of the inner passage 21 of the winding drum 2, so as to satisfy the requirement that a protective sleeve for OPGW optical fiber can protect OPGW optical fiber passing within a certain core number range.

It should be noted that the coupling teeth may be saw-toothed, or the coupling teeth may be rectangular, as long as they can be coupled with each other to improve the coupling force between the starting end 22 and the ending end 23 of the winding drum 2. The first coupling tooth 24 and the second coupling tooth 25 may be provided with the same tooth form or different tooth forms, and it should be noted that, for the sake of processing convenience, it is preferable that the first coupling tooth 24 and the second coupling tooth 25 are provided with the same tooth form.

As shown in fig. 3, in order to facilitate the OPGW optical fiber to penetrate into the tapered end 1, a longitudinal notch 121 is disposed on the tapered end 1, and in the using process, the longitudinal notch 121 of the tapered end 1 is broken off, so that the OPGW optical fiber can enter the tapered end 1 conveniently and quickly. And set up vertical breach 121 and can make the better OPGW optic fibre that adapts to different core numbers of conical end 1 pass through, when the number of OPGW optic fibre cores is less, can be through reducing the distance between the vertical breach 121, can ensure like this that OPGW optic fibre can be wrapped up by conical end 1, can also reduce the diameter of conical end 1 little distolateral for conical end 1 is changeed and is inserted in the optic fibre protective tube of OPGW optic fibre.

As shown in fig. 3, one side of the longitudinal notch 121 of the conical tip 1 is provided with a conical protrusion 122, the opposite side is provided with a circular hole 123 for inserting the conical protrusion 122, the diameter of the circular hole 123 is the same as the diameter of the small end of the conical protrusion 122, and the small end surface of the conical protrusion 122 is close to the circular hole 123.

When the clearance of the longitudinal notch 121 of the conical end head 1 needs to be adjusted, the depth of the conical protrusion 122 inserted into the circular hole 123 can be adjusted, and the diameter of the circular hole 123 is the same as the diameter of the small end of the conical protrusion 122, so that the conical protrusion 122 is clamped by the circular hole 123 after being inserted into the circular hole 123, so that the conical protrusion 122 is tightly connected with the circular hole 123, and looseness is not easy to occur. It should be noted that the depth of the circular hole 123 is larger than the length of the conical protrusion 122, so as to ensure that the clearance of the longitudinal notch 121 of the conical tip 1 is adjusted by the conical protrusion 122. After the cavity of the tapered end 1 penetrates into the OPGW optical fiber, the tapered protrusion 122 on one side of the longitudinal notch 121 can be inserted into the round hole 123 on the opposite side, so that the tapered end 1 can be completely wrapped on the optical fiber, the diameter of the section of the tapered end 1 can be reduced, and the tapered end 1 can be easily inserted into the optical fiber protective tube. Of course, in order to facilitate the insertion of the tapered protrusion 122 into the circular hole 123, the tapered protrusion 122 may be set to be a cylindrical section connected to the longitudinal notch 121 and a conical section connected above the cylindrical section, so as to ensure that the diameter value of the large end of the tapered protrusion 122 does not differ too much from the diameter value of the circular hole 123, and further ensure that the tapered protrusion 122 can smoothly enter the circular hole 123. It should be noted that the gap of the longitudinal notch 121 of the conical tip 1 can also be adjusted by using an adhesive tape.

As shown in fig. 3, the tapered end 1 includes a semi-cylindrical portion 11 for connecting with the end surface of the winding drum 2 and a tapered cylindrical portion 12 smoothly connected with the semi-cylindrical portion 11.

The tapered end 1 is used to separate the OPGW optical fiber from the cross section of the OPGW optical fiber protection tube to protect the OPGW optical fiber from being worn by the OPGW optical fiber protection tube. Since the cross-sectional shape of the winding drum 2 is approximately circular, in order to ensure the tight connection between the tapered end 1 and the winding drum 2, the semi-cylindrical portion 11 of the tapered end 1 is connected to the maximum diameter portion outside the winding drum 2, and the tapered cylindrical portion 12 is connected to the semi-cylindrical portion 11 in a smooth manner, it should be noted that the small end of the tapered cylindrical portion 12 can be inserted into the optical fiber protection tube of the OPGW optical fiber so as to separate the OPGW optical fiber from the cross-sectional surface of the optical fiber protection tube. Of course, the cross-sectional shape of the connection end of the conical tip 1 to the spool 2 may also be configured to fully match the cross-sectional shape of the spool 2.

As shown in fig. 1 to 3, a claw 27 is circumferentially provided on an outer side of an end portion of the winding drum 2, and a slot 111 engaged with the claw 27 is circumferentially provided on an inner side of the semi-cylindrical portion 11 of the tapered end head 1.

Since the winding drum 2 is in a curled shape and the tapered end 1 is in a tapered tube shape with different section diameters, the winding drum 2 and the tapered end 1 are separately processed in order to reduce the processing difficulty of a protective sleeve for an OPGW optical fiber. The two can be assembled and then used, and certainly, the reel 2 and the tapered end 1 can be assembled together after being respectively wrapped with the OPGW optical fiber. When the device is assembled, the claws 27 on the winding drum 2 are clamped with the clamping grooves 111 on the conical end head 1. Of course, the conical end 1 can also be connected to the mandrel 2 by means of glue.

The material of the reel 2 for the protective sleeve of the OPGW optical fiber is rubber, and the rubber has good elasticity, so that the reel 2 can still recover to a coiled state after being unfolded.

The roll 2 may be extruded by a rubber extrusion machine. The roll 2 can be extruded to a specific length, or the roll 2 can be continuously produced, and during the use process, the roll 2 can be cut on site according to specific actual requirements, so that the length of the roll 2 can be correspondingly changed.

After the welding of OPGW optical fiber is completed, firstly pull the brace 26 to move along the opposite direction of the self-curling of the winding drum 2, so that the winding drum 2 is slowly unfolded, after the winding drum 2 is completely unfolded, the winding drum is placed near the OPGW optical fiber, the OPGW optical fiber can be wrapped in the internal channel 21 after the winding drum 2 rebounds, and at the moment, the combination teeth of the starting end 22 and the terminating end 23 of the winding drum 2 can be adjusted, so that the OPGW optical fiber is tightly wrapped by the winding drum 2. Then, the longitudinal notch 121 of the tapered end 1 is broken off, so that the OPGW optical fiber enters the tapered end 1, it should be noted that the tapered end 1 is respectively disposed on two sides of the winding drum 2, then the tapered end 1 is respectively connected with the end of the winding drum 2, and then the tapered protrusion 122 at the longitudinal notch 121 of the tapered end 1 is inserted into the circular hole 123, and the insertion depth can be determined according to specific conditions. Of course, it is also possible to connect the two ends of the winding drum 2 to the tapered end 1 first, and then put the OPGW fiber into the winding drum 2 and the tapered end 1. It should be noted that, the length of the winding drum 2 can be cut out according to the actual situation on site, so that after the length of the winding drum 2 is connected with the tapered end 1, the tapered end 1 at both ends can be firmly inserted into the optical fiber protection tube, and the welded OPGW optical fiber is completely wrapped in the axial direction, so as to actually protect the OPGW optical fiber. It is of course also possible to wind tape on the outside of a protective sheath for the OPGW optical fiber to further improve its protective effect on the OPGW optical fiber.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A protective sheath for OPGW optical fibers, comprising:

2. A protective sheath for an OPGW optical fiber as claimed in claim 1 wherein a pull for unwinding said spool is provided outboard of the terminal end of said spool.

3. A protective sheath for an OPGW optical fiber as claimed in claim 1 wherein said coupling teeth include a first coupling tooth disposed outside of said reel starting end and a second coupling tooth disposed inside of said reel terminating end.

4. A protective sheath for OPGW optical fibers as claimed in claim 3 wherein said coupling teeth are serrated.

5. A protective sheath for an OPGW optical fiber as claimed in claim 1 wherein said tapered tip is provided with a longitudinal notch.

6. The protective sheath for OPGW optical fibers as claimed in claim 5, wherein one side of said longitudinal notch of said tapered end is provided with a tapered protrusion, and the opposite side is provided with a circular hole for inserting said tapered protrusion, said circular hole has the same diameter as the small end of said tapered protrusion, and the small end surface of said tapered protrusion is close to said circular hole.

7. The protective sheath for an OPGW optical fiber of claim 6, wherein the tapered tip comprises a semi-cylindrical portion for coupling with the end face of the spool and a conical cylindrical portion smoothly coupled with the semi-cylindrical portion.

8. The protective sheath for an OPGW optical fiber as claimed in claim 7, wherein a claw is circumferentially arranged on an outer side of an end portion of the winding drum, and a clamping groove clamped with the claw is circumferentially arranged on an inner side of the semi-cylindrical portion of the tapered end head.

9. A protective sheath for OPGW optical fibers as claimed in claim 1 wherein said flexible material is rubber.

10. A protective sheath for OPGW optical fibers as claimed in claim 9 wherein said spool is extruded.