CN108594392B - Combined wedge fitting for 8-shaped optical cable - Google Patents
Combined wedge fitting for 8-shaped optical cable Download PDFInfo
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- CN108594392B CN108594392B CN201810724833.0A CN201810724833A CN108594392B CN 108594392 B CN108594392 B CN 108594392B CN 201810724833 A CN201810724833 A CN 201810724833A CN 108594392 B CN108594392 B CN 108594392B
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Classifications
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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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/48—Overhead installation
- G02B6/483—Installation of aerial type
-
- 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
- G02B6/4439—Auxiliary devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a combined wedge-shaped hardware fitting for an 8-shaped optical cable, which comprises a hardware fitting main installation body, a wedge-shaped guide clamping block, a clamping block lock catch and a inhaul cable, wherein the wedge-shaped guide clamping block is arranged on the main installation body; the hardware fitting main installation body comprises a conical guide groove positioned on the front surface of the hardware fitting main installation body; the outer side of the big end of the conical guide groove of the hardware fitting main installation body is also provided with a lug and a lock catch fixing piece; the wedge-shaped guide clamping blocks are used for clamping the hanging wire parts of the 8-shaped optical cable; the earring is used for detachably connecting the inhaul cable; the lock catch fixing piece and the clamp splice lock catch form a snap fit to limit the sliding-out and the sliding guiding of the wedge-shaped guide clamp splice from the big end of the conical guide groove. The combined wedge fitting for the 8-shaped optical cable provided by the invention has better fastening reliability and stability (the requirement of the combined wedge fitting on the gripping force and tension resistance of the optical cable are guaranteed), and meanwhile, the combined wedge fitting is convenient to operate, the potential damage to the 8-shaped optical cable is reduced to the minimum, and the line safety is guaranteed.
Description
Technical Field
The invention relates to the technical field of communication optical cable hardware fittings, in particular to a combined wedge-shaped hardware fitting for an 8-shaped optical cable.
Background
The 8-shaped self-supporting optical cable is an optical cable suitable for long-distance communication and interoffice communication. Along with the promotion of FTTH construction, the optical cable gradually extends to the user end, and the diversification of laying environment and wiring mode makes the demand of 8 font self-supporting aerial optical cable constantly enlarge, and the demand of the nonmetal 8 font self-supporting aerial optical cable of central tube formula of especially simple structure increases by times each year.
The self-supporting optical cable (8-shaped optical cable) has simple structure, stable performance and convenient laying in the construction process of the optical fiber access network, especially in rural areas. During installation, a steel wire rope and a hook are not required to be erected in advance, and only one set of hardware fitting is required to be installed on each wire rod, so that the effects of quick installation and simplicity and convenience in maintenance are achieved.
The existing 8-shaped optical cable mounting hardware fitting in the market mainly has two types, namely an ADSS preformed armor rod structure similar to the existing power industry is adopted, after a hanging wire on the 8-shaped optical cable is separated, the hanging wire is wound and fixed through the preformed armor rod structure, and the other end of the hanging wire is mounted on a pole tower through a U-shaped fixing clamp and the like, so that the requirements on the external structural dimension of the hanging wire are high in the mode, otherwise, the hanging wire cannot be effectively wound and fixed, and the hanging wire is easy to fall off for a long time; the other is to directly fix the hanging wire part on the tower through the metal clamping block after the hanging wire is separated from the cable core, and the metal clamping block is used for tightly holding the hanging wire part through a screw, so that the hanging wire is extremely easy to damage due to the fact that the metal clamping block is harder at the moment, and potential risks are generated.
In summary, how to solve the above technical defects existing in the conventional technology is a technical problem that a person skilled in the art needs to solve.
Disclosure of Invention
The invention aims to provide a combined wedge fitting for an 8-shaped optical cable, which aims to solve the problems.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
The invention also provides a combined wedge-shaped hardware fitting for the 8-shaped optical cable, which comprises a hardware fitting main installation body, a wedge-shaped guide clamping block, a clamping block lock catch and a inhaul cable;
The hardware fitting main installation body comprises a conical guide groove positioned on the front surface of the hardware fitting main installation body; and the outer side of the big end of the conical guide groove of the hardware fitting main installation body is also provided with a lug and a lock catch fixing piece; the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body;
the wedge-shaped guide clamping blocks are used for clamping the hanging wire parts of the 8-shaped optical cable;
the earring is used for detachably connecting the inhaul cable;
The lock catch fixing piece and the clamping block lock catch form a snap fit for limiting the sliding-out and the sliding guiding of the wedge-shaped guide clamping block from the big end of the conical guide groove.
Preferably, as one possible embodiment; the hardware fitting main installation body further comprises a reinforcing rib assembly positioned on the back surface of the hardware fitting main installation body; the reinforcing rib component comprises ribs which are sequentially arranged at intervals along the length extension direction of the back of the hardware fitting main installation body; a rib groove is arranged between the adjacent ribs.
Preferably, as one possible embodiment; the wedge-shaped guide clamping blocks comprise two arched guide blocks which are oppositely arranged; each arched guide block comprises an inner clamping groove positioned at the inner side and a hoop-holding strip positioned at the top of each arched guide block; one hoop clamping strip is arranged at the top of one arch-shaped guide block, and two hoop clamping strips are arranged at the top of the other arch-shaped guide block; the inner clamping grooves of the two arched guide blocks are opposite, and hoop strips on the tops of the two arched guide blocks are mutually crossed to form a fastening fit, so that the two arched guide blocks are prevented from generating mutual dislocation in the process of clamping the optical cable to influence the clamping force; the inner clamping grooves on the inner sides of the two arched guide blocks are combined and spliced to form clamping grooves; the clamping groove is used for specifically clamping a hanging wire part of the 8-shaped optical cable.
Preferably, as one possible embodiment; the clamping block lock catch comprises a lock catch sleeve and a wedge-shaped guide clamping block limiting block; a triangular hole is formed in the lock catch sleeve; the triangular hole on the lock catch sleeve is used for being sleeved on the lock catch fixing piece on the back surface of the hardware fitting main installation body and is integrated with the hardware fitting main installation body.
Preferably, as one possible embodiment; the inner clamping groove wall of each arch-shaped guide block of the wedge-shaped guide clamping block is provided with a plurality of salient points; the bumps are arranged in a matrix mode.
Preferably, as one possible embodiment; the width dimension of the rib is between 1mm and 2 mm; the height of the ribs is uniformly and gradually increased from the small end to the large end of the conical guide groove, and the height of the ribs is 10-20 mm.
Preferably, as one possible embodiment; the width dimension of the hoop strip is between 4 and 10mm, and the thickness dimension is between 1 and 2 mm.
Preferably, as one possible embodiment; the main hardware fitting mounting body is provided with wedge-shaped guide clamping blocks and clamping block locks which are all plastic structural members; the plastic structural member takes one or more nylon materials of nylon 6, nylon 66, nylon 1012 or nylon 12 as a matrix, the proportion is about 40-80%, 10-40% of glass fiber, 1-20% of basalt fiber, 3-15% of hydrolysis-resistant master batch, heat stabilizer, light stabilizer and anti-aging master batch are mixed for injection molding under high pressure, and the plastic structural member meets the conditions of high temperature 85 ℃ and humidity 85% for 2000 hours, and the retention rate of tensile strength reaches 80%.
Preferably, as one possible embodiment; the hardware fitting main installation body, the wedge-shaped guide clamping blocks and the clamping block lock catches are formed at one time through high-pressure injection molding, and the hardware fitting main installation body, the wedge-shaped guide clamping blocks and the clamping block lock catches are formed through injection molding, and the hardware fitting main installation body is smooth and free of burrs.
Preferably, as one possible embodiment; the stay cable is a 304 stainless steel structural member and comprises at least 7 stainless steel stranded wires, and each stainless steel stranded wire comprises at least 7 fine metal wires.
Compared with the prior art, the embodiment of the invention has the advantages that:
The invention provides a combined wedge fitting for an 8-shaped optical cable, which has the following main structure after analysis: the combined wedge-shaped hardware fitting for the 8-shaped optical cable mainly comprises a hardware fitting main installation body, a wedge-shaped guide clamping block, a clamping block lock catch, a inhaul cable and other structures;
The hardware fitting main installation body comprises a conical guide groove positioned on the front surface of the hardware fitting main installation body; and the outer side of the big end of the conical guide groove of the hardware fitting main installation body is also provided with a lug and a lock catch fixing piece; the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body; the wedge-shaped guide clamping blocks are used for clamping the hanging wire parts of the 8-shaped optical cable; the earring is used for detachably connecting the inhaul cable; the lock catch fixing piece and the clamping block lock catch form a snap fit for limiting the sliding-out and the sliding guiding of the wedge-shaped guide clamping block from the big end of the conical guide groove.
In the specific operation process, the wedge-shaped guide clamping blocks can clamp the hanging wire part of the 8-shaped optical cable first, and then the wedge-shaped guide clamping blocks are installed in the conical guide grooves of the main fitting installation body; wherein the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body; therefore, the lifting wire part of the 8-shaped optical cable can be fixed through the wedge-shaped guide clamping blocks (the clamping mode is more firm and the lifting wire part cannot be damaged), so that the whole 8-shaped optical cable is fixed; the bearing part of the 8-shaped optical cable is a hanging wire part. The locking and fixing piece and the clamping block are in locking fit to prevent the wedge-shaped guide clamping block from sliding out of the large end of the conical guide groove and the wedge-shaped guide clamping block from sliding and guiding, so that the 8-shaped optical cable is fixed by the combined wedge-shaped hardware fitting to form an integral device;
Therefore, the combined wedge fitting for the 8-shaped optical cable provided by the invention is more firm in the fixing mode of the suspended wire part of the 8-shaped optical cable, and is better in reliability and stability of the fastening (ensuring the holding force requirement and tension resistance of the 8-shaped optical cable), and meanwhile, the combined wedge fitting is convenient to operate, reduces the potential damage to the 8-shaped optical cable to the minimum, and ensures the line safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a combined wedge fitting for a figure-8 optical cable according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a combined wedge fitting for a figure-8 optical cable according to an embodiment of the present invention;
Fig. 3 is a schematic perspective view of a main fitting body of a combined wedge fitting for an 8-shaped optical cable according to an embodiment of the present invention;
Fig. 4 is a schematic perspective view of a fitting main mounting body in a combined wedge fitting for an 8-shaped optical cable according to an embodiment of the present invention;
fig. 5 is a schematic view of a three-dimensional assembly structure of a wedge-shaped guide clamping block in a combined wedge fitting for an 8-shaped optical cable according to the first embodiment of the present invention;
fig. 6 is a schematic perspective view of an arch-shaped guide block of a wedge-shaped guide clamp block in the combined wedge fitting for the 8-shaped optical cable according to the first embodiment of the present invention;
Fig. 7 is a schematic perspective view of another arch-shaped guide block of the wedge-shaped guide clamp block in the combined wedge fitting for the 8-shaped optical cable according to the first embodiment of the present invention;
Fig. 8 is a schematic perspective view of a clamp block lock catch in a combined wedge fitting for an 8-shaped optical cable according to the first embodiment of the present invention;
Fig. 9 is a schematic diagram of an assembly structure of a combined wedge fitting for a figure-8 optical cable and the figure-8 optical cable according to the first embodiment of the present invention;
Fig. 10 is a schematic diagram of an assembly structure of a combined wedge fitting for a figure-8 optical cable and the figure-8 optical cable according to the first embodiment of the present invention under another view angle;
Fig. 11 is a schematic diagram of an assembly structure of a combined wedge fitting for a figure-8 optical cable and a figure-8 optical cable according to an embodiment of the present invention under a further viewing angle.
Reference numerals:
A hardware fitting main mounting body 1; a tapered guide groove 10; ribs 11; rib grooves 12; a ear clip 13; a latch mount 14;
Wedge-shaped guide clamping blocks 2; an arch-shaped guide block 21; an inner clamping groove 22; a band strip 23; bumps 24;
A clamp block lock catch 3; a lock catch sleeve 31; wedge-shaped guide clamp block limiting blocks 32;
A pull rope 4;
And 8-shaped optical cable A.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that certain terms indicating orientations or positional relationships are merely used to facilitate the description of the present invention and to simplify the description, and are not meant to indicate or imply that the devices or elements being referred to must be oriented, configured and operated in a particular orientation, and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that "connected" is to be understood in a broad sense, for example, may be a fixed connection, may be a detachable connection, or may be integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Example 1
Referring to fig. 1 and 2 (see fig. 9, 10 and 11), a first embodiment of the present invention provides a combined wedge fitting for a 8-shaped optical cable, which includes a fitting main mounting body 1 (see fig. 3 and 4 in particular), a wedge-shaped guiding clamping block 2 (see fig. 5, 6 and 7 in particular), a clamping block lock catch 3 (see fig. 8 in particular) and a guy cable 4;
wherein, the main fitting body 1 comprises a conical guide groove 10 positioned on the front surface of the main fitting body; the outer side of the large end of the conical guide groove 10 of the hardware fitting main installation body 1 is also provided with a lug 13 and a lock catch fixing piece 14; the wedge-shaped guide clamping block 2 is in free sliding fit with the conical guide groove 10 on the hardware fitting main installation body 1;
the wedge-shaped guide clamping block 2 is used for clamping a hanging wire part of the 8-shaped optical cable A (see also FIG. 9, FIG. 10 and FIG. 11);
the earring 13 is used for detachably connecting the inhaul cable 4;
The locking and fixing piece 14 forms a snap fit with the clamping block locking and locking piece 3 to limit the wedge-shaped guide clamping block 2 from sliding out of the large end of the conical guide groove 10.
In the structure of the combined wedge fitting for the 8-shaped optical cable provided by the embodiment of the invention; fig. 1 and 2 illustrate a three-dimensional structure of a combined wedge fitting for an 8-shaped optical cable; fig. 3 and fig. 4 are schematic perspective views of the main fitting body; FIG. 5 illustrates a three-dimensional assembly of wedge-shaped guide clips; fig. 6 and 7 show the three-dimensional structures of two arched guide blocks in the wedge-shaped guide clamp block respectively; FIG. 8 illustrates a perspective view of a clamp block latch; fig. 9 to 11 are diagrams illustrating effects of the figure-8 optical cable after being mounted to the combined wedge fitting for the figure-8 optical cable.
The main structure of the combined wedge fitting for the 8-shaped optical cable is analyzed as follows: the combined wedge-shaped hardware fitting for the 8-shaped optical cable mainly comprises a hardware fitting main installation body 1, a wedge-shaped guide clamping block 2, a clamping block lock catch 3, a inhaul cable 4 and other structures;
In the specific operation process, the wedge-shaped guide clamping blocks can clamp the hanging wire part of the 8-shaped optical cable first, and then the wedge-shaped guide clamping blocks are installed in the conical guide grooves of the main fitting installation body; wherein the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body; therefore, the lifting wire part of the 8-shaped optical cable can be fixed through the wedge-shaped guide clamping blocks (the clamping mode is more firm and the lifting wire part cannot be damaged), so that the whole 8-shaped optical cable is fixed; the bearing part of the 8-shaped optical cable is a hanging wire part. The locking and fixing piece and the clamping block are in locking fit to prevent the wedge-shaped guide clamping block from sliding out of the large end of the conical guide groove and the wedge-shaped guide clamping block from sliding and guiding, so that the 8-shaped optical cable is fixed by the combined wedge-shaped hardware fitting to form an integral device;
Therefore, the combined wedge fitting for the 8-shaped optical cable provided by the invention is more firm in fixing the suspension wire part of the 8-shaped optical cable, better in reliability and stability of fastening (ensuring the holding force requirement and tension resistance of the 8-shaped optical cable), convenient to operate, and capable of reducing the potential damage to the 8-shaped optical cable to the minimum and ensuring the line safety.
The following details the specific structure and specific technical effects of the combined wedge fitting for 8-shaped optical cable provided by the embodiment of the invention:
Preferably, as one possible embodiment; as shown in fig. 3 and 4, the main fitting body 1 further includes a stiffener assembly located at the back of the main fitting body; the reinforcing rib assembly comprises ribs 11 which are sequentially arranged at intervals along the length extension direction of the back of the hardware main installation body; rib grooves 12 are provided between adjacent ribs 11.
As shown in fig. 3 and 4, the width dimension of the rib is between 1mm and 2 mm; the height of the ribs is uniformly and gradually increased from the small end to the large end of the conical guide groove, and the height of the ribs is 10-20 mm.
1. The main installation body 1 of the gold utensil: the main fitting body 1 is of a conical structure, and the front surface of the main fitting body is provided with a conical guide groove 10, ribs 11, a rib groove 12, a lug 13, a locking fastener 14 and the like.
The conical guide groove is a main body part of the main fitting body and is in a C-shaped groove structure, so that the wedge-shaped guide clamping blocks can freely move in the conical guide groove, and the clamping and loosening of the 8-shaped optical cable lifting wire part can be facilitated. The outer surface of the main fitting body of the hardware fitting forms a uniform gradual increase from the small end to the large end of the reinforcing rib, and the height dimension of the rib is between 10mm and 20 mm;
The groove width between the ribs is 3-4 mm and is uniformly distributed, and the problem of cracking caused by exposure of hardware in an air environment, high tensile force, high heat or cold and high ultraviolet environment is solved by the rib groove structure; meanwhile, the ribs are added, so that the strength of the hardware fitting main installation body 1 is improved, and the holding force requirement of the hardware fitting main installation body on an optical cable is ensured;
Two ends of the conical guide groove on the structure of the main fitting body 1 are openings, wherein the plastic thickness of one opening is not less than 2mm, and the plastic thickness of the opening is the thinnest part of the main fitting body; the size of the opening is 0.4-0.6 times of the long axis of the wedge-shaped guide clamping block, so that the necessary binding force required by the conical guide groove is ensured, the holding force of the hardware fitting on the optical cable is ensured, and the line safety is ensured.
Preferably, as one possible embodiment; as shown in fig. 5, 6 and 7, the wedge-shaped guide clamping block 2 comprises two arched guide blocks 21 which are oppositely arranged; each arch-shaped guide block 21 comprises an inner clamping groove 22 positioned on the inner side and a hoop strip 23 positioned on the top of the arch-shaped guide block; one hoop clamping strip is arranged at the top of one arch-shaped guide block, and two hoop clamping strips are arranged at the top of the other arch-shaped guide block; the inner clamping grooves of the two arched guide blocks are opposite, and hoop strips on the tops of the two arched guide blocks are mutually crossed to form a fastening fit; the inner clamping grooves on the inner sides of the two arched guide blocks are combined and spliced to form clamping grooves; the clamping groove is used for specifically clamping a hanging wire part of the 8-shaped optical cable. (wherein the figure 8 cable involves a messenger section and a cable section).
As shown in fig. 5, 6 and 7, a plurality of protruding points 24 are arranged on the wall of the inner clamping groove 22 of each arch-shaped guide block 21 of the wedge-shaped guide clamping block; the diameter of the bump 24 is 0.3-0.8 mm, and the height is 0.3-1.0 mm (i.e. the bump in the shape of a spherical tapered cone, the bottom of which is a part of a hemispherical shape, and the top of which is in the shape of a cone).
As shown in fig. 5, 6 and 7, the width dimension of the hoop strip is between 4 and 10mm, and the thickness dimension is between 1 and 2 mm.
With respect to wedge-shaped guide clamp blocks 2: the wedge-shaped guide clamping block consists of two arched guide block structures, and comprises a hoop clamping strip and two hoop clamping strips, wherein the width of each hoop clamping strip is between about 4 and 10mm, and the thickness of each hoop clamping strip is between about 1 and 2mm; the arch-shaped guide block is internally provided with protruding points, so that the sliding friction force of the optical cable suspension wire part is enhanced, and the holding force is improved; meanwhile, the top of the convex point is in an arc structure so as to avoid the hidden danger of puncturing the sheath during clamping.
In the specific structure, the inner clamping groove wall of each arch-shaped guide block is provided with a convex point in a spherical tapered shape; the convex points are arranged in a matrix mode, the number of the convex points in the same column is 3-6, and the mutual interval distance is 1-2 mm; the spacing distance between adjacent convex point columns is 5-15 mm, and the vertical dislocation between every two adjacent columns is about 0-2 mm, so that a good clamping force is formed for the clamped hanging wire department, and meanwhile, the sheath is not damaged. The wedge-shaped guide clamping blocks clamp the cable hanging wire part, when the cable is subjected to a inhaul cable, the protruding points start the function of preventing the cable hanging wire part from sliding (enhancing friction force), the holding force is improved, and meanwhile, the top parts of the protruding points are in an arc structure, so that hidden dangers are broken through the sheath during clamping. The tapered guide groove and the wedge-shaped guide clamping block in the main fitting body are designed according to the standard size of the Moire taper hole, so that the wedge-shaped guide clamping block is enabled to be exponentially increased by the clamping force caused by the change of displacement size when the optical cable is clamped and stretched, and therefore strong binding force is generated on the clamped optical cable, and the supporting tension required by the normal operation of the optical cable is ensured.
Preferably, as one possible embodiment; as shown in fig. 8, the clamp block lock catch 3 comprises a lock catch sleeve 31 and a wedge-shaped guide clamp block limiting block 32; the lock catch sleeve 31 is internally provided with a triangular hole, and the triangular hole on the lock catch sleeve 31 is used for being sleeved on the lock catch fixing piece 14 on the back surface of the main fitting body 1 and is integrated with the main fitting body 1.
There is Guan Gakuai shackle 3: the clamping block lock catch 3 comprises a lock catch sleeve and a wedge-shaped guide clamping block limiting block. The lock catch sleeve is internally provided with triangular holes, and can be embedded into the lock catch fixing piece at the back of the main fitting body and integrated with the main fitting body, so that the function of limiting the wedge-shaped guide clamping blocks is realized, and the wedge-shaped guide clamping blocks are prevented from falling off due to the fact that the wedge-shaped guide clamping blocks are stretched to the limiting positions.
Preferably, as one possible embodiment; the main hardware fitting mounting body is provided with wedge-shaped guide clamping blocks and clamping block locks which are all plastic structural members; the plastic structural member takes nylon material as a matrix, accounts for 40-80%, is mixed with 10-40% of glass fiber, 1-20% of basalt fiber, and 3-15% of hydrolysis-resistant master batch.
In the specific technical scheme, the hardware fitting main installation body 1, the wedge-shaped guide clamping blocks 2 and the clamping block lock catches 3 are all plastic structural members; the plastic structural member takes one or more nylon materials of nylon 6, nylon 66, nylon 1012 or nylon 12 as a matrix, and has a ratio of about 40-80%, 10% -40% of glass fiber, 1% -20% of basalt fiber and 3% -15% of hydrolysis-resistant master batch. Specifically, glass fiber and basalt fiber are mixed as reinforcing materials, so that the strength of the hardware fitting is improved, and the contractility is reduced; and 3% -15% of additives such as hydrolysis-resistant master batch, heat stabilizer, light stabilizer and anti-aging master batch are added to improve the heat resistance, ultraviolet resistance and oxidation resistance of the composite material so as to meet the outdoor environment.
Preferably, as one possible embodiment; the main fitting body 1, the wedge-shaped guide clamping blocks 2 and the clamping block lock catches 3 are formed at one time through high-pressure injection molding, and the molded body is smooth and burr-free (namely, the appearance of each part of the fitting is required to be complete, burr-free, bubbles, cracks, hollows, warpage, impurities and the like).
The plastic part is injection molded under high pressure, and meets the conditions of high temperature of 85 ℃ and humidity of 85% for 1000 hours, and the retention rate of tensile strength reaches 80%; the main fitting body, the wedge-shaped guide clamping block and the clamping block lock catch are molded at one time through high-pressure injection molding, so that the main fitting body is smooth and burr-free. The length dimension of the main fitting body of the hardware fitting is 160+/-1 mm, and the length dimension of the wedge-shaped guide clamping block is 165+/-2 m;
Preferably, as one possible embodiment; the stay rope 4 is a 304 stainless steel structural part and comprises at least 7 stainless steel stranded wires, and each stainless steel stranded wire comprises at least 7 fine metal wires.
Structural scheme related to the guy cable 4: the number of the strands of the guy rope 4 is not less than 7, each strand is composed of at least 7 thin metal wires, the diameter of each metal wire is 0.2-0.5 mm, and meanwhile, the breaking force of the guy rope is not less than 4000N. The inhaul cable is made of stainless steel or galvanized steel wires, wherein the stainless steel is austenitic stainless steel such as 304 and 316, and the thickness of a galvanized layer of the galvanized steel wires is not less than 65 microns.
In the specific technical scheme, the inhaul cable used in the invention is composed of a plurality of metal soft stranded wires, and the flexible wire structure can ensure that the optical cable has a certain buffer function when being influenced by the environments such as strong wind, ice coating and the like in the use process after the optical cable is laid in a self-supporting and overhead manner through the hardware fitting, so that the capacity of omnibearing free movement is realized, and the optical cable is not directly impacted on the optical cable due to the extra load force such as the strong wind, the ice coating and the like because of the too high rigidity of the common steel stranded wires. The number of the stranded wires is usually not less than 7, each stranded wire is composed of at least 7 thin metal wires, the diameter of each metal wire is 0.2-0.5 mm, and meanwhile, the breaking force of the inhaul cable is required to be not less than 4000N. The inhaul cable is made of stainless steel or galvanized steel wires, wherein the stainless steel is austenitic stainless steel such as 304 and 316, and the thickness of a galvanized layer of the galvanized steel wires is not less than 65 microns.
Embodiment two:
The second embodiment of the invention provides a combined wedge fitting for 8-shaped optical cables, which is described in the following cases:
According to the second embodiment of the invention, the technical scheme formed by the most preferred implementation mode is selected on the basis of the first embodiment; the second embodiment of the invention provides a combined wedge-shaped fitting for an 8-shaped optical cable, which has the main structure identical to that of the first embodiment and is also composed of a fitting main installation body 1, a wedge-shaped guide clamping block 2, a clamping block lock catch 3, a inhaul cable 4 and other structures; different, in the second embodiment of the present invention, the specific materials and dimensions are specifically defined;
in a specific technical scheme of the second embodiment of the present invention; the plastic part consists of 28% of nylon 12 and 30% of nylon 6, contains 22% of glass fiber and 8% of basalt fiber, and the rest is various additives such as hydrolysis resistant master batch, heat stabilizer, light stabilizer, aging resistant master batch and the like;
in a specific technical scheme of the second embodiment of the present invention; the main fitting body, the wedge-shaped guide clamping block and the clamping block lock catch are molded at one time through high-pressure injection molding, so that the main fitting body is smooth and burr-free. The length dimension of the main fitting body of the hardware fitting is 160+/-1 mm, and the length dimension of the wedge-shaped guide clamping block is 165+/-2 m;
in a specific technical scheme of the second embodiment of the present invention; the stay rope is made of 304 stainless steel and consists of 7 soft stainless steel stranded wires, each stranded wire consists of 7 stainless steel wires with the length of 0.4mm, and the length of the stay rope is 225+/-5 mm;
In a specific technical scheme of the second embodiment of the present invention; when the 8-shaped optical cable is operated by the combined wedge fitting, the diameter of a hanging wire is 5.8+/-0.5 mm, the dimension of a hanging belt is 2 multiplied by 2mm (+ -0.5), the length of a cable core part is 6.2 mm+/-0.2 mm, and the short-term tension of the optical cable is not less than 4000N; according to the E1 in GB/T7424.2-2008, the tested optical cable span is larger than or equal to 25m length, the stretching speed is 100mm/min, the load is 4000N, the retention time is 1h, no obvious additional attenuation (0.03 dB) of the optical cable needs to be ensured, the optical fiber strain is not more than 0.15%, the combined wedge fitting is not broken or deformed, the displacement for clamping the optical cable is not more than 5mm, and after the experiment is finished, all parts are detached without cracks.
The combined wedge fitting for the 8-shaped optical cable provided by the embodiment of the invention has the following technical advantages:
1. The combined wedge fitting for the 8-shaped optical cable provided by the embodiment of the invention has more reasonable structural design; the combined wedge-shaped hardware fitting for the 8-shaped optical cable mainly comprises a hardware fitting main installation body, a wedge-shaped guide clamping block, a clamping block lock catch, a inhaul cable and other structures; obviously, the main fitting body, the specific structures such as the wedge-shaped guide clamping blocks, the clamping block locks, the inhaul cables and the like, the position relationship and the connection mode among the specific structures and the like are specially designed, so that the combined wedge-shaped fitting for the 8-shaped optical cable provided by the embodiment of the invention has more reasonable technical structure, more perfect functions and stronger practicability.
2. In the combined wedge-shaped fitting for the 8-shaped optical cable, in a specific use process, the wedge-shaped guide clamping blocks can clamp the hanging wire part of the 8-shaped optical cable first, and then the wedge-shaped guide clamping blocks are installed in the conical guide grooves of the fitting main installation body; wherein the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body; the fixing mode of the lifting wire part of the 8-shaped optical cable is more firm, the reliability and stability of the fastening are better (the holding force requirement and tension resistance of the 8-shaped optical cable are guaranteed), meanwhile, the operation is convenient, the potential damage to the 8-shaped optical cable is reduced to the minimum, and the line safety is guaranteed.
3. The combined wedge fitting for the 8-shaped optical cable provided by the invention also has the technical advantages of strong product structure and reliability, convenience in operation, simplification of installation steps and the like.
Based on the above significant technical advantages, the combined wedge-shaped hardware fitting for the 8-shaped optical cable provided by the invention can bring good market prospect and economic benefit.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The combined wedge-shaped hardware fitting for the 8-shaped optical cable is characterized by comprising a hardware fitting main installation body, a wedge-shaped guide clamping block, a clamping block lock catch and a inhaul cable;
The hardware fitting main installation body comprises a conical guide groove positioned on the front surface of the hardware fitting main installation body; and the outer side of the big end of the conical guide groove of the hardware fitting main installation body is also provided with a lug and a lock catch fixing piece; the wedge-shaped guide clamping block is in free sliding fit with the conical guide groove on the hardware fitting main installation body;
the wedge-shaped guide clamping blocks are used for clamping the hanging wire parts of the 8-shaped optical cable;
the earring is used for detachably connecting the inhaul cable;
The lock catch fixing piece and the clamp block lock catch form a snap fit for limiting the sliding-out and the sliding guiding of the wedge-shaped guide clamp block from the big end of the conical guide groove;
Two ends of the conical guide groove on the main fitting body structure are openings, wherein the plastic thickness of one opening is not less than 2mm, and the plastic thickness of the opening is the thinnest part of the main fitting body; the size of the opening is 0.4-0.6 times of the long axis of the wedge-shaped guide clamping block;
The clamping block lock catch comprises a lock catch sleeve and a wedge-shaped guide clamping block limiting block; a triangular hole is formed in the lock catch sleeve; the triangular hole on the lock catch sleeve is used for being sleeved on the lock catch fixing piece on the back surface of the hardware fitting main installation body and is integrated with the hardware fitting main installation body;
The main hardware fitting mounting body is provided with wedge-shaped guide clamping blocks and clamping block locks which are all plastic structural members; the plastic structural member takes one or more nylon materials of nylon 6, nylon 66, nylon 1012 or nylon 12 as a matrix, accounts for 40-80 percent, is mixed with 10-40 percent of glass fiber, 1-20 percent of basalt fiber, 3-15 percent of hydrolysis-resistant master batch, heat stabilizer, light stabilizer and aging-resistant master batch, is injection molded under high pressure, meets 2000 hours under the environment of 85 ℃ at high temperature and 85 percent of humidity, and has a tensile strength retention rate of 80 percent;
the wedge-shaped guide clamping blocks comprise two arched guide blocks which are oppositely arranged; each arched guide block comprises an inner clamping groove positioned at the inner side and a hoop-holding strip positioned at the top of each arched guide block; one hoop clamping strip is arranged at the top of one arch-shaped guide block, and two hoop clamping strips are arranged at the top of the other arch-shaped guide block; the inner clamping grooves of the two arched guide blocks are opposite, and hoop strips on the tops of the two arched guide blocks are mutually crossed to form a fastening fit, so that the two arched guide blocks are prevented from generating mutual dislocation in the process of clamping the optical cable to influence the clamping force; the inner clamping grooves on the inner sides of the two arched guide blocks are combined and spliced to form clamping grooves; the clamping groove is used for specifically clamping a hanging wire part of the 8-shaped optical cable.
2. The combination wedge fitting for a figure 8 fiber optic cable of claim 1,
The hardware fitting main installation body further comprises a reinforcing rib assembly positioned on the back surface of the hardware fitting main installation body; the reinforcing rib component comprises ribs which are sequentially arranged at intervals along the length extension direction of the back of the hardware fitting main installation body; a rib groove is arranged between the adjacent ribs.
3. The combination wedge fitting for a figure 8 fiber optic cable of claim 2,
The inner clamping groove wall of each arch-shaped guide block of the wedge-shaped guide clamping block is provided with a plurality of salient points; the bumps are arranged in a matrix mode.
4. The combination wedge fitting for a figure 8 fiber optic cable of claim 2,
The width dimension of the rib is between 1mm and 2 mm; the height of the ribs is uniformly and gradually increased from the small end to the large end of the conical guide groove, and the height of the ribs is 10-20 mm.
5. The combination wedge fitting for a figure 8 fiber optic cable of claim 1,
The width dimension of the hoop strip is between 4 and 10mm, and the thickness dimension is between 1 and 2 mm.
6. The combination wedge fitting for a figure 8 fiber optic cable of claim 1,
The hardware fitting main installation body, the wedge-shaped guide clamping blocks and the clamping block lock catches are formed at one time through high-pressure injection molding, and the injection molding body is smooth in surface and free of burrs.
7. The combination wedge fitting for a figure 8 fiber optic cable of claim 1,
The stay cable is a 304 stainless steel structural member and comprises at least 7 stainless steel stranded wires, and each stainless steel stranded wire comprises at least 7 fine metal wires.
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| CN201810724833.0A CN108594392B (en) | 2018-07-04 | 2018-07-04 | Combined wedge fitting for 8-shaped optical cable |
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|---|---|---|---|
| CN201810724833.0A CN108594392B (en) | 2018-07-04 | 2018-07-04 | Combined wedge fitting for 8-shaped optical cable |
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| CN108594392B true CN108594392B (en) | 2024-07-26 |
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| CN109655985B (en) * | 2018-12-20 | 2020-11-27 | 合肥市神雕起重机械有限公司 | Strain clamp device of both arms padlock protection |
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| CN108594392A (en) | 2018-09-28 |
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