CN111508652A - Armored safety cable - Google Patents
Armored safety cable Download PDFInfo
- Publication number
- CN111508652A CN111508652A CN202010318084.9A CN202010318084A CN111508652A CN 111508652 A CN111508652 A CN 111508652A CN 202010318084 A CN202010318084 A CN 202010318084A CN 111508652 A CN111508652 A CN 111508652A
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- CN
- China
- Prior art keywords
- cable
- metal protection
- protection strip
- strip
- protective layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses an armored safety cable, which comprises an outer cable protection layer, wherein an installation cavity is arranged in the outer cable protection layer, a cable core wire is installed in the cable installation cavity, more than one positioning groove is arranged on the inner side surface of the installation cavity of the outer cable protection layer in a circle around the installation cavity, the positioning grooves extend along the length direction of the cable, a limiting strip is fixedly installed in each positioning groove, an assembly cavity is respectively formed in each limiting strip towards one side of the cable core wire, a metal protection strip is installed in each assembly cavity, more than one through hole is equidistantly distributed in each metal protection strip, and a positioning protection rod is installed in each through hole; the invention reasonably utilizes the structure of the metal piece, so that the utilization rate of the metal piece is higher, resources are more reasonably used, the service life of the cable is greatly prolonged, and the cable is more safely laid.
Description
Technical Field
The invention relates to the field of cables, in particular to an armored safety cable.
Background
Since many cables are laid in soil, they require very high shear, corrosion, compression and fire resistance, and therefore, in order to satisfy the above-mentioned properties, the outer protection layer of the cable is usually reinforced and designed to be an armored outer protection layer. The armored outer protective layer is internally doped with more metal pieces for reinforcing the outer protective layer, so that the armored outer protective layer has better anti-shearing capability and can prevent the core wire of the cable from being damaged.
Disclosure of Invention
The invention aims to solve the technical problem of providing an armored safety cable, wherein the shearing resistance and the pressure resistance of the cable are improved by utilizing metal protection strips, after the cable bears larger pressure, each metal protection strip can completely wrap a core wire to perform secondary protection, a sealing surface is formed by utilizing the metal protection strips, the fireproof capacity of the core wire of the cable is improved, meanwhile, a positioning protection rod is utilized to be used as tertiary protection when the core wire of the cable is sheared, and is used as a buffering positioning piece when the cable is not used, the structural design is very reasonable, the armored safety cable can be effectively applied to more complex environments, and the service life of the cable is greatly prolonged.
The invention is realized by the following technical scheme: an armored safety cable comprises an outer cable protection layer, wherein an installation cavity is formed in the outer cable protection layer, a cable core wire is installed in the cable installation cavity, more than one positioning groove is arranged on the inner side surface of the installation cavity of the outer cable protection layer in a circle around the installation cavity, the positioning grooves extend along the length direction of the cable, a limiting strip is fixedly installed in each positioning groove, an assembly cavity is formed in each limiting strip towards one side of the cable core wire, a metal protection strip is installed in each assembly cavity, more than one through hole is equidistantly distributed in each metal protection strip, a positioning protection rod is installed in each through hole, an elastic rubber part is filled in each through hole at one side close to each limiting strip, the head of each positioning protection rod is in contact with the elastic rubber part after the positioning protection rod is installed in each through hole, a spring is sleeved outside each positioning protection rod, one end of each spring is welded and fixed with one side surface, the other end of the cable is fixed on the cable core wire.
As the preferred technical scheme, each metal protection strip is in an arch shape, the cable core wire comprises a core wire layer and an inner protection layer, the arc-shaped concave surface of each metal protection strip faces the inner protection layer, the inner diameter of the arc-shaped concave surface of each metal protection strip is equal to the outer diameter of the inner protection layer, and when the metal protection strips are in contact with the inner protection layer, the arc-shaped concave surfaces of the metal protection strips are wrapped on the outer wall surface of the inner protection layer.
As the preferred technical scheme, a notch is formed in the inner protective layer, one end of the positioning protection rod is inserted into the notch and is fixedly bonded, one end of the spring is arranged in the notch and is fixed with the bottom surface of the notch by glue, and after the spring recovers to deform, the spring retracts into the notch and enables the metal protection strip to be in contact with and tightly press the inner protective layer.
As a preferred technical scheme, after each metal protection strip is attached and contacted with the cable core, more than one metal protection strip forms a complete metal protection layer outside the cable core.
As a preferred technical scheme, the positioning protection rod comprises a fixing part and a bending part, the fixing part is fixedly installed in a notch of the inner protection layer, the height of the fixing part is larger than the thickness of the metal protection strip, when the metal protection strip is in contact with a cable core wire, the top of the fixing part slightly protrudes out of an arch surface of the metal protection strip, and the fixing part is rotatably connected with the bending part through a rotating pin.
As the preferred technical scheme, all fixed mounting has torsion spring on the rotating pin, through torsion spring with fixed part and the portion of bending elasticity articulated to make the portion of bending resume to be 90 degrees contained angles between the back of deforming and the fixed part at torsion spring.
As the preferred technical scheme, the distance between adjacent positioning protection rods is slightly larger than the length of the bending part, and when each bending part and the cable core wire are in a parallel state, more than one bending part forms a raised protection convex edge outside the metal protection strip.
As a preferred technical scheme, the limiting strips are all air bags, the air bags are filled with gas and then expand, the whole limiting strips are C-shaped and used for wrapping the metal protecting strips, and the wrapping force of the air bags is larger than the deformation restoring force of the springs.
The invention has the beneficial effects that: the metal protection strip can not only strengthen the strength of the outer protection layer, but also increase the strength and the fireproof capacity of the cable core wire, and reasonably utilizes metal parts, so that the resource utilization rate is higher. Meanwhile, the positioning protection rod is utilized to position the cable core wire, so that the buffering capacity of the cable core wire is improved, and the cable core wire can be covered outside the cable core wire again to serve as further protection on the strength of the cable core wire.
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, 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 the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an internal cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;
FIG. 4 is an enlarged view of a portion of the present invention at B of FIG. 1;
fig. 5 is a diagram showing a state of use of the metal protection strip of the present invention as secondary protection.
Detailed Description
As shown in figures 1, 2 and 3, the armored safety cable comprises an outer cable protection layer 1, a mounting cavity 4 is arranged in the outer cable protection layer 1, a cable core wire 9 is arranged in the cable mounting cavity, more than one positioning groove is arranged on the inner side surface of the mounting cavity 4 of the outer cable protection layer 1 around the mounting cavity 4 in a circle, the positioning grooves extend along the length direction of the cable, a limiting strip 3 is fixedly arranged in each positioning groove, an assembly cavity is arranged on each limiting strip 3 towards the cable core wire 9, a metal protection strip 2 is arranged in each assembly cavity, more than one through hole is arranged on each metal protection strip 2 at equal intervals, a positioning protection rod 8 is arranged in each through hole, an elastic rubber part 21 is filled in one side of each through hole close to the limiting strip, the head of each positioning protection rod 8 is contacted with the elastic rubber part 21 after the positioning protection rods are arranged in the through holes, a spring 6 is sleeved outside each positioning protection rod 8, one end of the spring 6 is fixedly welded with one side surface of the metal protection strip 2, and the other end of the spring is fixed on the cable core wire 9.
Wherein each metal protection strip 2 is in an arch shape, the cable core wire 9 comprises a core wire layer 7 and an inner protection layer 5, the arc concave surface of the metal protection strip 2 faces the inner protection layer 5, the inner diameter of the arc concave surface of the metal protection strip 2 is equal to the outer diameter of the inner protection layer, when the metal protection strip 2 is contacted with the inner protection layer 5, the arc concave surface of the metal protection strip 2 is wrapped with the outer wall surface of the inner protection layer 5, and when the metal protection strip 2 is attached to the inner protection layer 5, two general situations are available, one of the metal protective strips is that part of the metal protective strip 2 is jointed with the core wire of the cable, and the positioning protective rod 8 damages the limiting strip after the cable is subjected to a great shearing force, the metal protection strip 2 is reset and covers the outer part of the cable core wire 9, and at the moment, the metal protection strip 2 is used as secondary protection for the outer part of the cable core wire 9, and can be attached to the outer part of the cable core wire along the guide of the positioning protection rod after bearing primary impact on the outer protection layer 1; the second situation is that the cable is spontaneously combusted or all the limiting strips are damaged by an external fire source, all the metal protective strips reset under the action of the spring and are completely wrapped outside the cable core wire, as shown in fig. 5, a closed circular structure is formed to wrap the cable core wire, and the purposes of isolating the fire source and extinguishing fire are achieved.
Wherein, be provided with the notch on the inner protection layer 5, location fender rod 8 one end is inserted in the notch and bonds fixedly, and the one end of spring 6 is packed into in the notch and is beaten glue water with the notch bottom surface and fix, and after spring 6 resumeed the deformation, spring 6 contracts in the notch and compresses tightly metal protection strip and inner protection layer contact.
In this embodiment, after each metal protection strip 2 is in contact with cable core 9, more than one metal protection strip forms a complete metal protection layer outside the cable core, and through this metal protection layer, secondary protection and fire protection of cable core are realized.
As shown in fig. 4, the positioning protection rod 8 includes a fixing portion 83 and a bending portion 81, the fixing portion 83 is fixedly installed in the recess of the inner protection layer, the height of the fixing portion 83 is greater than the thickness of the metal protection strip, when the metal protection strip contacts with the cable core, the top of the fixing portion 83 slightly protrudes the arch surface of the metal protection strip 2, the fixing portion 83 is rotatably connected with the bending portion 81 through a rotating pin 82, torsion springs (not shown) are fixedly installed on the rotating pin 82, the fixing portion 83 is elastically hinged with the bending portion 81 through the torsion springs, and the bending portion 81 forms an included angle of 90 degrees with the fixing portion after the torsion springs recover deformation, at this time, the bending portions on the positioning protection rods 8 are arranged one by one along the length direction of the cable core, and a protruding protection rib is formed at the upper end of the positioning protection rods, so that the positioning protection rods can further achieve a safety protection against shearing, the shear strength of the metal protection strip and the cable core wire is improved, the structure is reasonably and secondarily utilized, and the positioning protection rod used for positioning the cable core wire and buffering originally can play a role in protecting the cable core wire under special conditions.
In this embodiment, spacing 3 all adopts an gasbag 31, its inside gas filling back inflation, wholly be "C" font, a metal protection strip 2 is lived in the parcel, the wrapping power of gasbag is greater than the deformation restoring force of spring, consequently, as long as spacing is not destroyed, just can make metal protection strip 2 as an organic whole with the outer protective layer all the time, after the cable received the shearing, the elastic rubber portion 21 on the metal protection strip 2 can be ejecting to location fender rod 8, and then utilize location fender rod 8 to puncture the gasbag, in case the gasbag is inside gaseously, its wrapping power just also disappears, metal protection strip direction and reset under the effect of spring. When a fire disaster happens, the fire disaster is kept away from the same place, and only when the fire disaster happens, the flame temperature is high, and a large number of limiting strips can be damaged, so that generally, all the limiting strips can be damaged basically as long as a fire source exists, and then all the metal protecting strips can be reset and cover the outside of the cable core wire to be used as secondary protection of the core wire.
The invention has the beneficial effects that: the metal protection strip can not only strengthen the strength of the outer protection layer, but also increase the strength and the fireproof capacity of the cable core wire, and reasonably utilizes metal parts, so that the resource utilization rate is higher. Meanwhile, the positioning protection rod is utilized to position the cable core wire, so that the buffering capacity of the cable core wire is improved, and the cable core wire can be covered outside the cable core wire again to serve as further protection on the strength of the cable core wire.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (8)
1. An armored safety cable, characterized in that: including the cable outer protective layer, an installation cavity has in the cable outer protective layer, install the cable conductor in the cable installation cavity, it is provided with more than one positioning groove to surround the installation cavity round on the installation cavity medial surface of cable outer protective layer, positioning groove extends along the length direction of cable, a spacing of all fixing into in the positioning groove, an assembly chamber is all seted up towards cable conductor one side on the spacing, a metal protection strip all packs into in the assembly chamber, the equidistant through-hole of having laid more than one on the metal protection strip, a location protection pole of all packing into in the through-hole, be close to a spacing one side and all pack into an elastic rubber portion in the through-hole, its head and the contact of elastic rubber portion after the location protection pole packs into in the through-hole, an equal suit spring in outside of every location protection pole, spring one end and a metal protection strip side welded fastening, its other end is fixed on the cable conductor.
2. The armored safety cable of claim 1, wherein: every metal protection strip all is arch shape, and the cable conductor includes core line layer and inner protective layer, and the arc concave surface of metal protection strip faces inner protective layer, and the internal diameter of the arc concave surface of metal protection strip equals the external diameter of inner protective layer, and when metal protection strip and inner protective layer contact, the arc concave surface of metal protection strip wraps up with the outer wall of inner protective layer.
3. The armored safety cable of claim 2, wherein: be provided with the notch on the inner protective layer, location fender rod one end is inserted in the notch and is bonded fixedly, and the one end of spring is packed into in the notch and is beaten glue with the notch bottom surface and fix, restores the back of deformation when the spring, and the spring contracts in the notch and compresses tightly metal protection strip and inner protective layer contact.
4. The armored safety cable of claim 1, wherein: when all the metal protection strips are contacted with the cable core in a bonding manner, more than one metal protection strip forms a complete metal protection layer outside the cable core.
5. The armored safety cable of claim 1, wherein: the positioning protection rod comprises a fixing part and a bending part, the fixing part is fixedly arranged in a notch of the inner protection layer, the height of the fixing part is larger than the thickness of the metal protection strip, when the metal protection strip is in contact with a cable core wire, the top of the fixing part slightly protrudes out of an arched surface of the metal protection strip, and the fixing part is rotatably connected with the bending part through a rotating pin.
6. The armored safety cable of claim 5, wherein: all fixed mounting has torsion spring on the rotating pin, through torsion spring with fixed part and the elastic hinge of portion of bending to make the portion of bending be 90 degrees contained angles between the fixed part after torsion spring resumes to deform.
7. The armored safety cable of claim 5, wherein: the interval between adjacent location fender rods slightly is greater than the length of the portion of bending, and when each portion of bending and cable conductor all are in parallel state, the portion of bending through more than one forms bellied protection bead in the outside of metal protection strip.
8. The armored safety cable of claim 1, wherein: the limiting strips are all provided with air bags, the air bags are filled with gas and then expand, the whole limiting strips are C-shaped and used for wrapping the metal protection strips, and the wrapping force of the air bags is larger than the deformation restoring force of the springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010318084.9A CN111508652B (en) | 2020-04-21 | 2020-04-21 | Armored safety cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010318084.9A CN111508652B (en) | 2020-04-21 | 2020-04-21 | Armored safety cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111508652A true CN111508652A (en) | 2020-08-07 |
| CN111508652B CN111508652B (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010318084.9A Active CN111508652B (en) | 2020-04-21 | 2020-04-21 | Armored safety cable |
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| Country | Link |
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| CN (1) | CN111508652B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116798687A (en) * | 2023-03-03 | 2023-09-22 | 深圳市广思德科技有限公司 | Power cable |
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| KR20100003516A (en) * | 2008-07-01 | 2010-01-11 | 황원규 | Connection cable for co2 gas welding |
| CN208189276U (en) * | 2018-03-22 | 2018-12-04 | 谷琼琼 | A kind of high voltage power cable |
| CN208240377U (en) * | 2018-05-24 | 2018-12-14 | 天津天易海上工程有限公司 | A kind of submarine cable protecting pipe set |
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| CN208433242U (en) * | 2018-05-03 | 2019-01-25 | 广西万翔电线电缆有限公司 | A kind of high-tension cable resistant to high temperature |
| CN208460444U (en) * | 2018-07-09 | 2019-02-01 | 安徽维尔特仪表线缆有限公司 | A kind of property cable against pressure of outdoor application |
| CN209625891U (en) * | 2019-05-07 | 2019-11-12 | 天津正标津达线缆集团有限公司 | A kind of heat dissipation enhanced type polyvinyl chloride insulation control cable |
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2020
- 2020-04-21 CN CN202010318084.9A patent/CN111508652B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100003516A (en) * | 2008-07-01 | 2010-01-11 | 황원규 | Connection cable for co2 gas welding |
| CN208189276U (en) * | 2018-03-22 | 2018-12-04 | 谷琼琼 | A kind of high voltage power cable |
| CN208433242U (en) * | 2018-05-03 | 2019-01-25 | 广西万翔电线电缆有限公司 | A kind of high-tension cable resistant to high temperature |
| CN208240377U (en) * | 2018-05-24 | 2018-12-14 | 天津天易海上工程有限公司 | A kind of submarine cable protecting pipe set |
| CN208460444U (en) * | 2018-07-09 | 2019-02-01 | 安徽维尔特仪表线缆有限公司 | A kind of property cable against pressure of outdoor application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116798687A (en) * | 2023-03-03 | 2023-09-22 | 深圳市广思德科技有限公司 | Power cable |
| CN116798687B (en) * | 2023-03-03 | 2024-03-22 | 台山市万安电线电缆有限公司 | Power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111508652B (en) | 2021-12-10 |
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Effective date of registration: 20211111 Address after: 266300 No. 502, Guangzhou North Road, Jiaozhou, Qingdao, Shandong Applicant after: Qingdao Haomai Cable Group Co., Ltd Address before: 322100 HUTANG 1, Shanglu community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province Applicant before: Xu Liping |
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