1. The utility model provides a prefabricated type optical cable of halogen-free fire-retardant shielding type, includes outsourcing cover (1) and shielding type sheath (2), outsourcing cover (1), its characterized in that have been cup jointed to the outside of shielding type sheath (2): the shielding type sheath (2) is internally provided with a protective structure (3), a reinforced framework (4) is arranged in the protective structure (3), the reinforced framework (4) comprises a first frame body (401), a second cavity (402), a first bulge (403), a filling hole (404), halogen-free flame-retardant filler (405), a groove (406), a second frame body (407), a circular truncated cone bulge (408), a first limiting sleeve (409), a second limiting sleeve (410) and a spiral reinforcing rib (411), the second cavity (402) is arranged in the middle of the end surface of the first frame body (401), the side wall of the first frame body (401) is provided with the first bulge (403), the end surface of the first bulge (403) is provided with the filling hole (404), the filling hole (404) is filled with the halogen-free flame-retardant filler (405), the groove (406) is arranged between the two first bulges (403) on the side wall of the first frame body (401), and spiral reinforcing ribs (411) are arranged in grooves of the grooves (406), a first limiting sleeve (409) is sleeved outside the first frame body (401), circular truncated cone protrusions (408) are arranged at two ends of the first frame body (401), a second frame body (407) is arranged at one end of the first frame body (401), another second frame body (407) is arranged at the other end of the second frame body (401), circular truncated cone protrusions (408) are arranged at two ends of the second frame body (407), the circular truncated cone protrusions (408) at one end of the second frame body (407) are integrally arranged with the circular truncated cone protrusions (408) at the other end of the first frame body (401), a second limiting sleeve (410) is sleeved outside the second frame body (407), the first protrusions (403) outside the second frame body (407) are aligned with the first protrusions (403) outside the first frame body (401), and the end of the outer packaging sleeve (1) is connected with a prefabricated head (5), the protective structure (3) comprises a protective sleeve (301), a first soft sleeve (302), a second soft sleeve (303), a first cavity (304), a first spiral supporting strip (305) and a second spiral supporting strip (306), wherein the first soft sleeve (302) and the second soft sleeve (303) are arranged at the positions of slits at the two ends of the outer wall of the protective sleeve (301), the first cavity (304) is formed by the protective sleeve (301) and the end face of the first soft sleeve (302) and the end face of the second soft sleeve (303), a first spiral supporting strip (305) and a second spiral supporting strip (306) are arranged in the cavity of the first cavity (304), the first spiral supporting strip (305) and the second spiral supporting strip (306) are identical in structure, the first spiral supporting strip (305) and the second spiral supporting strip (306) are arranged in a staggered mode, and the protective sleeve (301), the first soft sleeve (302) and the second soft sleeve (303) are arranged integrally, the inner wall of the first soft sleeve (302) is sunken towards the center of the cavity of the first cavity (304), an annular groove is formed in the outer wall of the first soft sleeve (302), the cross section of the first spiral support strip (305) is a crescent cross section, the first spiral support strip (305) is fixedly connected with the contact end of the protective sleeve (301), and a gap is formed between the first spiral support strip (305) and the first soft sleeve (302) as well as between the first spiral support strip (305) and the second soft sleeve (303).

2. The halogen-free flame-retardant shielding type prefabricated optical cable according to claim 1, wherein: first support body (401) and first protruding (403) an organic whole set up, and first support body (401) and the protruding (408) an organic whole of round platform at first support body (401) both ends set up, and two are adjacent there is the gap between the protruding (408) of round platform, two second cavity (402) are through protruding (408) terminal surface trompil intercommunication of round platform.

3. The halogen-free flame-retardant shielding type prefabricated optical cable according to claim 2, wherein: the outer wall of first support body (401) is provided with five first archs (403), and is five first arch (403) arrange with first support body (401) terminal surface center annular array, and recess (406) of seting up between first stop collar (409) and two adjacent first archs (403) form spacing hole, spiral strengthening rib (411) contact stop collar inner wall and first support body outer wall.

4. The halogen-free flame-retardant shielding type prefabricated optical cable according to claim 3, wherein: a gap is formed between the protecting sleeve (301) and the limiting sleeve, and the lower end cambered surface of the first spiral supporting strip (305) is in contact with the limiting sleeve.

5. The halogen-free flame-retardant shielding type prefabricated optical cable according to any one of claims 1 to 4, wherein: prefabricated head (5) are including shell (501), installation storehouse (502), support frame (503), blotter (504), round platform cover (505) and separated time cover (506), and the terminal surface of shell (501) has seted up installation storehouse (502), be provided with support frame (503) in installation storehouse (502) the storehouse, and the afterbody of support frame (503) is provided with blotter (504), the terminal surface of support frame (503) is provided with round platform cover (505), and round platform cover (505) terminal surface trompil department is provided with separated time cover (506).

6. The halogen-free flame-retardant shielding type prefabricated optical cable according to claim 5, wherein: the outer packaging sleeve (1) is inserted into an opening in the tail of the outer shell (501), the boss (408) of the end face of the first frame body (401) contacts the buffer pad (504), the end face of the first frame body (401) is provided with a second cavity (402) which is aligned with the opening in the end face of the buffer pad (504), and the opening in the end face of the buffer pad (504) is aligned with the opening in the end face of the support frame (503).

Background

The optical cable consists of a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and additionally, components such as a waterproof layer, a buffer layer, an insulated metal wire and the like are arranged according to requirements;

the Chinese utility model has the patent application number of CN200820065319.2, the patent name is a discrete optical fiber framework type optical cable, which comprises an optical cable framework and a central reinforcement, the outer of the optical cable framework is coated with a water-blocking material, the outmost layer is an outer sheath, and the difference is that discrete optical fibers with thickened optical fiber coating layers are arranged in a framework groove of the optical cable framework;

the toughness of the framework type optical cable is insufficient when the optical cable is bent, the optical cable is excessively bent to cause damage to an internal framework, the optical cable core is damaged after the framework is damaged, and the using effect is poor.

Disclosure of Invention

Technical problem to be solved

The invention mainly aims to provide a halogen-free flame-retardant shielding type prefabricated optical cable which effectively solves the problems in the background art.

(II) technical scheme

In order to solve the technical problems, the invention provides a halogen-free flame-retardant shielding type prefabricated optical cable which comprises an outer packaging sleeve and a shielding type sheath, wherein the outer packaging sleeve is sleeved outside the shielding type sheath, a protective structure is arranged in the shielding type sheath, a reinforced framework is arranged in the protective structure sleeve, the reinforced framework comprises a first frame body, a second cavity, a first bulge, a filling hole, halogen-free flame-retardant filler, a groove, a second frame body, a circular truncated cone bulge, a first limiting sleeve, a second limiting sleeve and a spiral reinforcing rib, the middle of the end surface of the first frame body is provided with the second cavity, the side wall of the first frame body is provided with the first bulge, the end surface of the first bulge is provided with the filling hole, the halogen-free flame-retardant filler is filled in the filling hole, the groove is formed between the two first bulges on the side wall of the first frame body, and the spiral reinforcing rib is arranged in the groove, the protective structure comprises a protective sleeve, a first soft sleeve, a second soft sleeve, a first cavity, a first spiral supporting strip and a second spiral supporting strip, wherein the first soft sleeve and the second soft sleeve are arranged at the position of a seam at the two ends of the outer wall of the protective sleeve, a first cavity is formed by the end holes of the protective sleeve and the soft sleeve, and the first spiral supporting strip and the second spiral supporting strip are arranged in the first cavity, the structure of first spiral support bar and second spiral support bar is the same, and first spiral support bar and the crisscross setting of second spiral support bar, the integrative setting of lag, first soft cover and the soft cover of second, and first soft cover inner wall is sunken towards first cavity chamber center, the ring channel is seted up to the outer wall of first soft cover, the cross-section of first spiral support bar is crescent cross-section, and first spiral support bar and lag contact jaw fixed connection, there is the gap between first spiral support bar and the soft cover.

Preferably, the first frame body and the first bulges are integrally arranged, the first frame body and the circular truncated cone bulges at two ends of the first frame body are integrally arranged, a gap is formed between every two adjacent circular truncated cone bulges, and the two second cavities are communicated through holes formed in the end faces of the circular truncated cone bulges;

preferably, the outer wall of the first frame body is provided with five first bulges which are distributed in an annular array at the center of the end face of the first frame body, a limiting hole is formed by a groove formed between the first limiting sleeve and two adjacent first bulges, and the spiral reinforcing rib is contacted with the inner wall of the limiting sleeve and the outer wall of the frame body;

preferably, a gap is formed between the protecting sleeve and the limiting sleeve, and the lower end cambered surface of the first spiral supporting strip contacts the limiting sleeve;

preferably, the prefabricated head comprises a shell, an installation bin, a support frame, a cushion pad, a circular table sleeve and a wire dividing sleeve, wherein the installation bin is arranged on the end surface of the shell, the support frame is arranged in the installation bin, the cushion pad is arranged at the tail part of the support frame, the circular table sleeve is arranged on the end surface of the support frame, and the wire dividing sleeve is arranged at the hole of the end surface of the circular table sleeve;

preferably, the outer packaging sleeve is inserted into the opening in the tail part of the outer shell, the circular truncated cone on the end face of the first frame body is in protruding contact with the cushion pad, the second cavity is formed in the end face of the first frame body and aligned with the opening in the end face of the cushion pad, and the opening in the end face of the cushion pad is aligned with the opening in the end face of the support frame.

(III) advantageous effects

The technical scheme of the invention has the following advantages:

the invention provides a halogen-free flame-retardant shielding type prefabricated optical cable, which is characterized in that frame bodies, circular truncated cone bulges, limiting sleeves and spiral reinforcing ribs arranged on a reinforced framework are matched with each other, so that bending between the two frame bodies can be realized, and further, the angle of the optical cable can be adjusted, the spiral reinforcing ribs are bent along with the bent optical cable after the optical cable is bent, the bending toughness of the optical cable is enhanced by the spiral reinforcing ribs, the frame bodies and the circular truncated cone bulges, so that the optical cable is prevented from being broken after being bent, the projections and grooves are arranged outside the frame bodies, so that the inner core of the optical cable can be protected, halogen-free flame-retardant fillers are filled in the projections, the halogen-free flame-retardant performance at the frame bodies can be enhanced, the protecting sleeve and the soft sleeve are matched with each other, the protecting sleeve is bent along with the bent optical cable, the protecting sleeve is further straightened, the protecting sleeve is prevented from being broken after being bent excessively, the toughness of the protecting sleeve is enhanced, and the spiral supporting strips are matched with the protecting sleeve and the limiting sleeves, can realize keeping the gap between lag and the stop collar, avoid support body and the excessive protrusion of spiral strengthening rib to cause the lag wearing and tearing, the blotter cooperatees with the round platform is protruding, can realize the buffer protection of support body, avoids the excessive bending of support body to cause the damage.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is an exploded view of the preformation head of the present invention;

FIG. 4 is an exploded view of the overwrap, shielding sheath, protective structure, and reinforcing cage of the present invention;

FIG. 5 is an exploded view of the protective structure of the present invention;

FIG. 6 is an exploded view of the reinforced frame of the present invention;

FIG. 7 is an exploded view of a portion of the reinforced frame of the present invention;

fig. 8 is a cross-sectional view of a frame and a projection of the present invention.

In the figure: 1. an outer packaging sleeve; 2. a shielding type sheath; 3. a protective structure; 301. a protective sleeve; 302. a first soft sleeve; 303. a second soft sleeve; 304. a first cavity; 305. a first helical support strip; 306. a second helical support strip; 4. a reinforced framework; 401. a first frame body; 402. a second cavity; 403. a first protrusion; 404. a filler hole; 405. a halogen-free flame retardant filler; 406. a groove; 407. a second frame body; 408. the circular truncated cone is protruded; 409. a first stop collar; 410. a second stop collar; 411. a spiral reinforcing rib; 5. prefabricating a head; 501. a housing; 502. installing a bin; 503. a support frame; 504. a cushion pad; 505. a round table sleeve; 506. and (4) a wire dividing sleeve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows:

as shown in fig. 1, 2 and 4, the halogen-free flame-retardant shielding prefabricated optical cable comprises an outer packaging sleeve 1 and a shielding type sheath 2, wherein the outer packaging sleeve 1 is sleeved outside the shielding type sheath 2, a protective structure 3 is arranged in the shielding type sheath 2, a reinforced framework 4 is arranged in the protective structure 3, and the end of the outer packaging sleeve 1 is connected with a prefabricated head 5.

Example two:

as shown in fig. 4, 6, 7, and 8, a reinforced frame of a halogen-free flame-retardant shielding type prefabricated optical cable, the reinforced frame 4 includes a first frame 401, a second cavity 402, a first protrusion 403, a filler hole 404, a halogen-free flame-retardant filler 405, a groove 406, a second frame 407, a circular truncated cone protrusion 408, a first position-limiting sleeve 409, a second position-limiting sleeve 410, and a spiral reinforcing rib 411, the second cavity 402 is disposed in the middle of the end surface of the first frame 401, the first protrusion 403 is disposed on the sidewall of the first frame 401, the filler hole 404 is disposed on the end surface of the first protrusion 403, the halogen-free flame-retardant filler 405 is filled in the hole of the filler hole 404, the groove 406 is disposed between the two first protrusions 403 on the sidewall of the first frame 401, the spiral reinforcing rib 411 is disposed in the groove 406, the first position-limiting sleeve 409 is sleeved outside the first frame 401, the circular truncated cone protrusions 408 are disposed at the two ends of the first frame 401, the second frame 407 is disposed at the other end of the first frame 401, and the two ends of the second frame body 407 are provided with circular truncated cone protrusions 408, the circular truncated cone protrusions 408 at one end of the second frame body 407 are integrally arranged with the circular truncated cone protrusions 408 at the other end of the first frame body 401, the second frame body 407 is externally sleeved with a second limiting sleeve 410, the first protrusions 403 outside the second frame body 407 are aligned with the first protrusions 403 outside the first frame body 401, the first frame body 401 is integrally arranged with the first protrusions 403, the first frame body 401 is integrally arranged with the circular truncated cone protrusions 408 at the two ends of the first frame body 401, a gap is formed between two adjacent circular truncated cone protrusions 408, two second cavities 402 are communicated through openings on the end faces of the circular truncated cone protrusions 408, the outer wall of the first frame body 401 is provided with five first protrusions 403, the five first protrusions 403 are arranged in an annular array at the center of the end face of the first frame body 401, a limiting hole is formed between the first limiting sleeve 409 and the two adjacent first protrusions 403, the spiral reinforcing rib 406 contacts with the inner wall of the limiting sleeve and the outer wall of the frame body, the frame body, the circular truncated cone protrusion 408, the limiting sleeve and the spiral reinforcing rib 411 arranged on the reinforced framework 4 are matched with each other, so that bending between the two frame bodies can be realized, and further the angle of the optical cable can be adjusted, due to the adoption of the spiral reinforcing rib 411, the spiral reinforcing rib 411 is bent along with the bent optical cable, the spiral reinforcing rib 411, the frame body and the circular truncated cone protrusion 408 enhance the bending toughness of the optical cable, so as to ensure that the optical cable is not broken after being bent, the protrusion and the groove 406 are arranged outside the frame body, so that the protection of an optical cable inner core can be realized, the halogen-free flame-retardant filler 405 is filled in the protrusion, so that the halogen-free flame-retardant performance of the frame body can be enhanced, a special-shaped structure is formed after the two circular truncated cone protrusions are connected, the special-shaped structure realizes the connection between the two frame bodies, a gap is formed between the two frame bodies, and after the frame bodies are bent, the circular truncated cone protrusions are also bent along with the bracket bodies, so as to realize the bending between the two frame bodies, the inclination of the angle is stopped until the edge of one section of the frame body is lapped on the edge of the other section of the frame body, so that the optical cable is effectively prevented from being bent too much to cause cracks or fracture, the bending toughness of the optical cable is enhanced, and the two second cavities are communicated through the holes on the end faces of the bosses 408 of the circular truncated cones, so that the inner core of the optical cable can conveniently run through.

Example three:

as shown in fig. 5, a protective structure of a halogen-free flame-retardant shielding type prefabricated optical cable, the protective structure 3 includes a protective cover 301, a first soft cover 302, a second soft cover 303, a first cavity 304, a first spiral support bar 305 and a second spiral support bar 306, the first soft cover 302 and the second soft cover 303 are disposed at the opening seams at the two ends of the outer wall of the protective cover 301, the first cavity 304 is formed by opening the end faces of the protective cover 301 and the soft cover, the first spiral support bar 305 and the second spiral support bar 306 are disposed in the cavity of the first cavity 304, the first spiral support bar 305 and the second spiral support bar 306 have the same structure, the first spiral support bar 305 and the second spiral support bar 306 are staggered, the protective cover 301, the first soft cover 302 and the second soft cover 303 are integrally disposed, the inner wall of the first soft cover 302 is recessed toward the center of the cavity of the first cavity 304, the outer wall of the first soft cover 302 is provided with an annular groove, the cross section of first spiral support bar 305 is crescent cross section, and first spiral support bar 305 and lag 301 contact tip fixed connection, has the gap between first spiral support bar 305 and the soft cover, and lag 301 and soft cover are mutually supported, and lag 301 buckles thereupon after the optical cable buckles, and the sheath is then straight, avoids lag 301 excessively to buckle the back fracture, strengthens lag 301's toughness.

Example four:

as shown in fig. 4, 5 and 6, a protective structure for a halogen-free flame-retardant shielding type prefabricated optical cable has a gap between the protective sleeve 301 and the limiting sleeve, the lower end arc surface of the first spiral support strip 305 contacts the limiting sleeve, the spiral support strip is matched with the protective sleeve 301 and the limiting sleeve, the gap between the protective sleeve 301 and the limiting sleeve can be kept, and the protective sleeve 301 is prevented from being worn due to the fact that the frame body and the spiral reinforcing rib 411 excessively protrude.

Example five:

as shown in fig. 3, a prefabricated head of a halogen-free flame-retardant shielding type prefabricated optical cable, the prefabricated head 5 comprises a housing 501, an installation bin 502, a supporting frame 503, a buffer pad 504, a circular truncated cone sleeve 505 and a branching sleeve 506, the end surface of the shell 501 is provided with an installation bin 502, a supporting frame 503 is arranged in the installation bin 502, a buffer pad 504 is arranged at the tail part of the supporting frame 503, a round platform sleeve 505 is arranged on the end surface of the supporting frame 503, and the hole on the end surface of the circular truncated cone sleeve 505 is provided with a wire separating sleeve 506, the outer packaging sleeve 1 is inserted into the hole on the tail part of the outer shell 501, and the boss 408 of the circular truncated cone on the end surface of the first frame body 401 contacts the buffer pad 504, the second cavity 402 formed on the end surface of the first frame body 401 is aligned with the hole on the end surface of the buffer pad 504, the hole on the end surface of the buffer pad 504 is aligned with the hole on the end surface of the support frame 503, and the buffer pad 504 is matched with the boss 408 of the circular truncated cone, so that the buffer protection of the frame body can be realized, and the damage caused by excessive bending of the frame body can be avoided.

The frame body, the circular truncated cone bulges, the limiting sleeve and the spiral reinforcing rib are matched with each other, so that bending between the two frame bodies can be realized, and further the angle of the optical cable can be adjusted;

the above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solution of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.