CN216212405U

CN216212405U - Flexible fireproof cable with large length and high reliability

Info

Publication number: CN216212405U
Application number: CN202122762414.6U
Authority: CN
Inventors: 张立澎; 张立淳; 张欢欢
Original assignee: Shenzhen Hilum Technology Co ltd
Current assignee: Shenzhen Hilum Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-05
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a flexible fireproof cable with large length and high reliability, which relates to the technical field of communication cables and comprises a cable core, wherein an inorganic insulating layer is sleeved and installed on the outer side of the cable core, a copper sheath is sleeved and installed on the outer side of the inorganic insulating layer, the copper sheath comprises a plurality of sheath joints and a plurality of limiting steel wires, a limiting edge is formed on the outer side of the left end of each sheath joint, a convex edge is formed on the outer side of the right end of each sheath joint, an annular sliding chute is formed on the inner side of each convex edge, each limiting edge is installed in the annular sliding chute in a sliding fit manner, a positioning ring is formed in the middle of the inner side of each sheath joint, through holes are formed in the positioning rings, the limiting steel wires penetrate through the through holes of the two adjacent sheath joints in a one-to-one correspondence manner, limiting columns are fixedly installed at the left end and the right end of each limiting steel wire, the diameter of each limiting column is larger than the inner diameter of each through hole, and the length of each limiting steel wire is smaller than the width of each annular sliding chute; the beneficial effects are that: the copper sheath can be bent, and the copper sheath can not be damaged during bending, so that the fireproof performance of the copper sheath is ensured.

Description

Flexible fireproof cable with large length and high reliability

Technical Field

The utility model relates to the technical field of communication cables, in particular to a flexible fireproof cable with large length and high reliability.

Background

The fireproof cable which is widely applied at the present stage mainly comprises two types of UL series flame-retardant cables and flame-retardant low-smoke halogen-free cables. Generally, the conductor is lived to fire prevention cable on the market through inorganic material parcel, and the fire prevention is realized through copper sheathing in inorganic material's the outside, but, copper sheathing's hardness is higher, is difficult to the flexible bending, and the installation of cable is very inconvenient, buckles by force and can cause the permanent damage of copper sheathing, leads to the fire behavior to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical scheme capable of solving the problems in order to overcome the defects.

The utility model provides a flexible fireproof cable of big length high reliability, including the cable core, the outside cover of cable core is established and is installed inorganic insulating layer, the outside cover of inorganic insulating layer is established and is installed the copper sheath, the copper sheath includes the spacing steel wire of several sheath joint and several, the sheath joint is the drum shape, the outside shaping of sheath joint left end has spacing limit, the outside shaping of sheath joint right-hand member has the chimb, the inboard shaping of sheath joint right-hand member has annular spout, annular spout sets up the inboard at the chimb, spacing limit sliding fit installs in annular spout, the inboard middle part shaping of sheath joint has the holding ring, the shaping has the through-hole on the holding ring, spacing steel wire one-to-one passes the through-hole setting of two adjacent sheath joints, equal fixed mounting in both ends has spacing post about spacing steel wire, the diameter of spacing post is greater than the internal diameter of through-hole, the length of spacing steel wire is less than the width of annular spout.

As a further scheme of the utility model: the through holes are provided with a plurality of circular arrays of the through holes, and the circular arrays of the through holes are arranged and formed on the positioning ring.

As a further scheme of the utility model: the cable core is provided with a plurality of cable cores, and inorganic fiber fillers are filled and installed between the inorganic insulating layers and the copper sheath of the cable cores.

As a further scheme of the utility model: the sheath joint is sleeved on the outer sides of the inorganic insulating layers.

As a further scheme of the utility model: the outer side of the copper sheath is sleeved with an outer sheath.

As a further scheme of the utility model: the inboard shaping of sheath joint right-hand member has the ladder groove, and the left end clearance fit of right side sheath joint installs at the ladder inslot, and annular spout shaping is at the ladder inslot.

As a further scheme of the utility model: the cable core adopts a stranded copper wire conductor.

Compared with the prior art, the utility model has the beneficial effects that: inorganic insulating layer and copper sheath all are used for protecting the cable core for the cable core is not fragile, and several sheath joint's cooperation makes the copper sheath can the multi-angle buckle, buckles on the way spacing limit slide in the annular spout, and two adjacent sheath joints can be taut in the setting of spacing steel wire, make the rigidity of copper sheath improve, can not cause permanent damage when bending, guarantee its fire behavior.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic cross-sectional view of the copper sheath of the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a schematic structural view of the retaining ring of the present invention.

Shown in the figure: 1. a cable core; 2. an inorganic insulating layer; 3. a copper sheath; 31. a sheath joint; 32. a limiting steel wire; 4. a limiting edge; 5. a convex edge; 6. an annular chute; 7. a positioning ring; 8. a through hole; 9. a limiting column; 10. inorganic fiber fillers; 11. an outer sheath; 12. a stepped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a flexible fireproof cable with large length and high reliability comprises a cable core 1, an inorganic insulating layer 2 is sleeved on the outer side of the cable core 1, a copper sheath 3 is sleeved on the outer side of the inorganic insulating layer 2, the copper sheath 3 comprises a plurality of sheath joints 31 and a plurality of limiting steel wires 32, the sheath joints 31 are in a cylindrical shape, a limiting edge 4 is formed on the outer side of the left end of each sheath joint 31, a convex edge 5 is formed on the outer side of the right end of each sheath joint 31, an annular sliding chute 6 is formed on the inner side of the right end of each sheath joint 31, the annular sliding chute 6 is arranged on the inner side of each convex edge 5, the limiting edges 4 are arranged in the annular sliding chutes 6 in a sliding fit manner, a positioning ring 7 is formed in the middle of the inner side of each sheath joint 31, through holes 8 are formed in the positioning ring 7, the limiting steel wires 32 are arranged corresponding to the through holes 8 of the two adjacent sheath joints 31 one by one, limiting columns 9 are fixedly arranged at the left end and right end of each limiting steel wire 32, the diameter of the limiting column 9 is larger than the inner diameter of the through hole 8, and the length of the limiting steel wire 32 is smaller than the width of the annular chute 6;

the principle is as follows: inorganic insulating layer 2 and copper sheathing 3 all are used for protecting cable core 1 for cable core 1 is not fragile, and several sheath joint 31's cooperation makes copper sheathing 3 can the multi-angle buckle, buckles on the way spacing limit 4 slides in annular chute 6, and two adjacent sheath joints 31 can be taut in the setting of spacing steel wire 32, make copper sheathing 3's rigidity improve, can not cause permanent damage when bending, guarantee its fire behavior.

As a further scheme of the utility model: the through holes 8 are arranged in a plurality, and the through holes 8 are arranged and formed on the positioning ring 7 in a circular array manner; the plurality of limiting steel wires 32 strain the two adjacent sheath joints 31 in a one-to-one correspondence manner, so that the copper sheath 3 can be bent at multiple angles, and the copper sheath cannot be damaged during bending.

As a further scheme of the utility model: the cable core 1 is provided with a plurality of cable cores, and inorganic fiber fillers 10 are filled and installed between the inorganic insulating layers 2 and the copper sheath 3 of the cable cores 1; the inorganic fiber filler 10 and the inorganic insulating layer 2 are not ignited, and the fire resistance is improved.

As a further scheme of the utility model: the sheath joint 31 is sleeved on the outer sides of the inorganic insulating layers 2; so that the installation of the copper sheathing 3 is more stable.

As a further scheme of the utility model: an outer sheath 11 is sleeved on the outer side of the copper sheath 3; the outer sheath 11 can provide protection for the copper sheath 3, so that the copper sheath 3 is not prone to damp corrosion.

As a further scheme of the utility model: a stepped groove 12 is formed in the inner side of the right end of the sheath joint 31, the left end of the right sheath joint 31 is installed in the stepped groove 12 in a clearance fit mode, and the annular sliding groove 6 is formed in the stepped groove 12; so that the fit between the plurality of sheath joints 31 is more stable.

As a further scheme of the utility model: the cable core 1 adopts a twisted copper wire conductor; the conductivity is better.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flexible fireproof cable of big length high reliability, includes the cable core, and the outside cover of cable core is established and is installed inorganic insulating layer, and the outside cover of inorganic insulating layer is established and is installed copper sheath, its characterized in that: copper sheath includes several sheath joint and the spacing steel wire of several, the sheath joint is the drum shape, the outside shaping of sheath joint left end has spacing limit, the outside shaping of sheath joint right-hand member has the chimb, the inboard shaping of sheath joint right-hand member has annular spout, annular spout sets up the inboard at the chimb, spacing limit sliding fit installs in annular spout, the inboard middle part shaping of sheath joint has the holding ring, the shaping has the through-hole on the holding ring, spacing steel wire one-to-one passes the through-hole setting of two adjacent sheath joints, the equal fixed mounting in both ends about spacing steel wire has spacing post, the diameter of spacing post is greater than the internal diameter of through-hole, the length of spacing steel wire is less than the width of annular spout.

2. A large length high reliability flexible fire-resistant cable as claimed in claim 1, wherein: the through holes are provided with a plurality of circular arrays of the through holes, and the circular arrays of the through holes are arranged and formed on the positioning ring.

3. A large length high reliability flexible fire-resistant cable as claimed in claim 1, wherein: the cable core is provided with a plurality of cable cores, and inorganic fiber fillers are filled and installed between the inorganic insulating layers and the copper sheath of the cable cores.

4. A large length high reliability flexible fire-resistant cable as claimed in claim 3, wherein: the sheath joint is sleeved on the outer sides of the inorganic insulating layers.

5. A large length high reliability flexible fire-resistant cable as claimed in claim 1, wherein: the outer side of the copper sheath is sleeved with an outer sheath.

6. A large length high reliability flexible fire-resistant cable as claimed in claim 1, wherein: the inboard shaping of sheath joint right-hand member has the ladder groove, and the left end clearance fit of right side sheath joint installs at the ladder inslot, and annular spout shaping is at the ladder inslot.

7. A large length high reliability flexible fire-resistant cable as claimed in claim 1, wherein: the cable core adopts a stranded copper wire conductor.