CN208368228U - A kind of fire-resisting cable - Google Patents
A kind of fire-resisting cable Download PDFInfo
- Publication number
- CN208368228U CN208368228U CN201821085846.XU CN201821085846U CN208368228U CN 208368228 U CN208368228 U CN 208368228U CN 201821085846 U CN201821085846 U CN 201821085846U CN 208368228 U CN208368228 U CN 208368228U
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- cable
- outside
- insulated wire
- wire cores
- cable core
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Abstract
The utility model relates to field of cable technology.It is designed to provide a kind of fire-resisting cable that protective performance is fabulous.The technical scheme adopted by the utility model is a kind of fire-resisting cable, the armor and restrictive coating that are successively set on outside cable core including cable core and from the inside to the outside；The cable core includes three insulated wire cores arranged in isosceles triangle and the flame retardant coating being set in outside three insulated wire cores；The centre of three insulated wire cores is additionally provided in three forked inner support frames, and the inner support frame is uniformly distributed along the length direction of cable, and three bifurcateds of inner support frame are respectively protruding into the gap between three insulated wire cores；Rock wool fibers are filled in cavity in the flame retardant coating；Flame retardant coating successively includes easy-sintering clay layer and fireproof mica belt from the inside to the outside；The utility model can greatly improve the structural strength of cable, have fabulous protective performance to cable.
Description
Technical field
The utility model relates to field of cable technology, are specifically related to a kind of fire-resisting cable.
Background technique
Armouring is that one layer of high-intensitive material of the outer bread of cable core is used to protect cable, to prevent pounding, pressing, rack cable sheath
Damage core leads to a kind of protective layer of short circuit afterwards.Existing armored cable can generally select to increase to reinforce the intensity of armouring
The mode of thick armor, but the weight of cable is thus significantly increased, influence other performance indicators of cable.Meanwhile it is existing
Some armored cables are concentrated mainly on the protection to all lateral stresses to the protection of cable, and lack for limiting cable core
The construction of position causes core damage in insulation, causes short circuit accident.In addition, the fire resistance of existing armored cable also needs
It is promoted.
Summary of the invention
The purpose of this utility model is to provide a kind of fire-resisting cables that protective performance is fabulous.
For achieving the above object, the technical scheme adopted by the utility model is a kind of fire-resisting cable, including cable core
The armor and restrictive coating being successively set on outside cable core from the inside to the outside；
The cable core includes three insulated wire cores arranged in isosceles triangle and the flame retardant coating being set in outside three insulated wire cores；
The centre of three insulated wire cores is additionally provided in three forked inner support frames, length direction of the inner support frame along cable
It is uniformly distributed, three bifurcateds of inner support frame are respectively protruding into the gap between three insulated wire cores；Sky in the flame retardant coating
Rock wool fibers are filled in chamber；Flame retardant coating successively includes easy-sintering clay layer and fireproof mica belt from the inside to the outside；
The armor includes several positioning rings and steel strand wires, and the positioning ring is set in outside cable core, and along the length of cable
Degree direction is uniformly spaced apart；The steel strand wires extend along the length direction of cable, and uniform in a ring centered on cable core
Distribution；Several grooves matched with steel strand wires are provided on the outer peripheral surface of the positioning ring, the steel strand wires are located in groove；
The restrictive coating includes inner restrictive coating and external sheath layer, on the inner restrictive coating and the opposite surface of external sheath layer
It is provided with buffering sawtooth, and the buffering sawtooth intermeshing on inner restrictive coating and external sheath layer.
Preferably, the insulated wire cores successively include conductor, insulating layer and shielded layer from the inside to the outside.
Preferably, the center of the cable core is additionally provided with center and reinforces steel wire, is provided on the inner support frame and center
Reinforce the through-hole that steel wire matches, the center is reinforced steel wire and is threaded through in through-hole.
The beneficial effects of the utility model embody a concentrated reflection of, and can greatly improve the structural strength of cable, have to cable
There is fabulous protective performance.Specifically, the utility model in use, restrictive coating external sheath layer made of rubber and
Inner restrictive coating is constituted, and buffering sawtooth is provided on external sheath layer and inner restrictive coating, when being pounded, being pressed, ground, is had bigger
Nargin is deformed, external instantaneous stress can greatly be alleviated, prevent restrictive coating from rupturing.The armouring that steel strand wires and positioning ring are constituted
Layer has excellent protective performance and enough flexibilities, and the groove on positioning ring can carry out certain limit to steel strand wires,
Prevent the armor in the case where torsion is excessive from deforming.In the case of fire, easy-sintering clay layer can quickly be burnt
Form hard pottery casing, to constitute fabulous protection to cable core, and under normal condition easy-sintering clay layer have it is enough
Flexibility facilitates wiring.In addition, the design of inner support frame can carry out positioning support to insulated wire cores, prevent between insulated wire cores
Mutual extrusion effectively reduces the risk of insulated wire cores insulation rupture.Therefore, the cable of the utility model has fabulous anti-
Performance is protected, can adapt to various extreme operating conditions.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of inner support frame；
Fig. 3 is the structural schematic diagram of armor.
Specific embodiment
A kind of fire-resisting cable in conjunction with shown in Fig. 1-3, the armouring being successively set on outside cable core including cable core and from the inside to the outside
Layer 1 and restrictive coating.The armor 1 is generally made of metal material, and is on the one hand provided physical protection, on the other hand also be can be used as
Shielded layer carry out using.The restrictive coating is generally made of rubber, such as: polyvinyl chloride, crosslinked polyethylene.
The cable core includes three insulated wire cores 2 arranged in isosceles triangle and the fire resisting being set in outside three insulated wire cores 2
Layer 3.In order to provide better protection effect, the utility model flame retardant coating 3 successively includes 31 He of easy-sintering clay layer from the inside to the outside
Fireproof mica belt 32.The insulated wire cores 2 successively include conductor, insulating layer and shielded layer, certainly, the insulation from the inside to the outside
Core 2 can be directly made of conductor and insulating layer.
The centre of the utility model three insulated wire cores 2 is additionally provided in three forked inner support frames 4, the interior branch
Support 4 is uniformly distributed along the length direction of cable, and three bifurcateds of inner support frame 4 are respectively protruding between three insulated wire cores 2
In gap.Rock wool fibers 5 are filled in cavity in the flame retardant coating 3.
The armor 1 includes several positioning rings 6 and steel strand wires 7, and the positioning ring 6 is set in outside cable core, and along cable
Length direction be uniformly spaced apart.The steel strand wires 7 extend along the length direction of cable, and centered on cable core in a ring
It is uniformly distributed.Several grooves 8 matched with steel strand wires 7, the steel strand wires 7 are provided on the outer peripheral surface of the positioning ring 6
In in groove 8.
The restrictive coating includes inner restrictive coating 9 and external sheath layer 10, the inner restrictive coating 9 and the opposite table of external sheath layer 10
Buffering sawtooth is provided on face, and the buffering sawtooth intermeshing on inner restrictive coating 9 and external sheath layer 10.
In use, restrictive coating external sheath layer 10 made of rubber and inner restrictive coating 9 are constituted the utility model, and
It is provided with buffering sawtooth on external sheath layer 10 and inner restrictive coating 9, when being pounded, being pressed, ground, there is bigger deformation nargin, energy
Instantaneous stress outside enough greatly alleviations, prevents restrictive coating from rupturing.The armor that steel strand wires 7 and positioning ring 6 are constituted has excellent
Different protective performance and enough flexibilities, and the groove 8 on positioning ring 6 can carry out certain limit to steel strand wires 7, prevent
Armor deforms in the case that torsion is excessive.In the case of fire, easy-sintering clay layer 31 can be sintered into quickly
Hard pottery casing, to constitute fabulous protection to cable core, and under normal condition easy-sintering clay layer 31 have it is enough soft
Property, facilitate wiring.In addition, the design of inner support frame 4 can carry out positioning support to insulated wire cores 2, prevent between insulated wire cores 2
Mutual extrusion effectively reduces the risk of the insulation rupture of insulated wire cores 2.Therefore, the cable of the utility model has fabulous
Protective performance can adapt to various extreme operating conditions.
In order to further increase the tensile property of the utility model, better way can also be the center of the cable core also
Be provided with center and reinforce steel wire 11, be provided on the inner support frame 4 and reinforce the through-hole that steel wire 11 matches with center, it is described in
The heart is reinforced steel wire 11 and is threaded through in through-hole.
Claims (3)
1. a kind of fire-resisting cable, it is characterised in that: the armor (1) that is successively set on outside cable core including cable core and from the inside to the outside and
Restrictive coating；
The cable core includes three insulated wire cores (2) in isosceles triangle arrangement and is set in the fire resisting of three insulated wire cores (2) outside
Layer (3)；The centre of three insulated wire cores (2) is additionally provided in three forked inner support frames (4), the inner support frame (4)
Length direction along cable is uniformly distributed, and three bifurcateds of inner support frame (4) are respectively protruding into the seam between three insulated wire cores (2)
In gap；Rock wool fibers (5) are filled in cavity in the flame retardant coating (3)；Flame retardant coating (3) successively includes easy-sintering from the inside to the outside
Clay layer (31) and fireproof mica belt (32)；
The armor (1) includes several positioning rings (6) and steel strand wires (7), and the positioning ring (6) is set in outside cable core, and edge
The length direction of cable is uniformly spaced apart；The steel strand wires (7) extend along the length direction of cable, and centered on cable core
It is uniformly distributed in a ring；Several grooves (8) matched with steel strand wires (7), institute are provided on the outer peripheral surface of the positioning ring (6)
Steel strand wires (7) are stated to be located in groove (8)；
The restrictive coating includes inner restrictive coating (9) and external sheath layer (10), and the inner restrictive coating (9) and external sheath layer (10) are opposite
Surface on be provided with buffering sawtooth, and on inner restrictive coating (9) and external sheath layer (10) buffering sawtooth intermeshing.
2. fire-resisting cable according to claim 1, it is characterised in that: the insulated wire cores (2) successively include from the inside to the outside
Conductor, insulating layer and shielded layer.
3. fire-resisting cable according to claim 2, it is characterised in that: the center of the cable core is additionally provided with center and reinforces steel
Line (11), is provided on the inner support frame (4) and reinforces the through-hole that steel wire (11) match with center, and steel wire is reinforced at the center
(11) it is threaded through in through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085846.XU CN208368228U (en) | 2018-07-10 | 2018-07-10 | A kind of fire-resisting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085846.XU CN208368228U (en) | 2018-07-10 | 2018-07-10 | A kind of fire-resisting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208368228U true CN208368228U (en) | 2019-01-11 |
Family
ID=64925194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821085846.XU Active CN208368228U (en) | 2018-07-10 | 2018-07-10 | A kind of fire-resisting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208368228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712931A (en) * | 2020-12-19 | 2021-04-27 | 江苏泰祥电线电缆有限公司 | Flexible corrosion-resistant high-temperature cable and production process thereof |
-
2018
- 2018-07-10 CN CN201821085846.XU patent/CN208368228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712931A (en) * | 2020-12-19 | 2021-04-27 | 江苏泰祥电线电缆有限公司 | Flexible corrosion-resistant high-temperature cable and production process thereof |
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