CN107809098A - A kind of cable protection sleeve pipe - Google Patents
A kind of cable protection sleeve pipe Download PDFInfo
- Publication number
- CN107809098A CN107809098A CN201710940875.3A CN201710940875A CN107809098A CN 107809098 A CN107809098 A CN 107809098A CN 201710940875 A CN201710940875 A CN 201710940875A CN 107809098 A CN107809098 A CN 107809098A
- Authority
- CN
- China
- Prior art keywords
- cable
- sleeve pipe
- protective layer
- protection sleeve
- cable protection
- Prior art date
- 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.)
- Withdrawn
Links
- 239000011241 protective layer Substances 0.000 claims abstract description 32
- 230000003139 buffering effect Effects 0.000 claims abstract description 15
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 17
- 239000010410 layer Substances 0.000 abstract description 12
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 239000011152 fibreglass Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Insulated Conductors (AREA)
Abstract
Cable is provided with the invention discloses a kind of cable protection sleeve pipe, inside the cable protection sleeve body and places passage, the cross section of described sleeve pipe body is annular, and described sleeve pipe body is to be sequentially provided with protective layer one, buffering area, protective layer two by introversion；At least three equally distributed elastic supports in a circumferential direction are provided with the buffering area；The elastic support both ends are connected on protective layer one and protective layer two.The present invention, which provides a kind of cable protective sleeve pipe, has the structure of three-layer protection; pliability is good; preferable protective effect can be played to the cable of various laying forms; with good shield effectiveness, stable performance, the cable protective sleeve pipe has preferable pressure-proof and snap-resistent performance and impact resistance; it is reasonable in design; it is easily installed, barrier propterty is good, service life length.
Description
Technical field
The invention belongs to cable accessory technical field, more particularly to a kind of cable protection sleeve pipe.
Background technology
Cable is the general designation of optical cable, cable and other items.The purposes of cable has a lot, is mainly used in control installation, connection is set
It is standby, the multiple action such as transmit electric power, be common and indispensable a kind of thing in daily life.Present urban distribution network is built
If with improvement project, Municipal improvement project, Civil Aviation Airport engineering construction, industrial park engineering construction, traffic road and bridge engineering
Construction, cellular engineering construction etc. are required to cable carrying out buried laying, to alleviate ground space pressure.Cable laying is,
Need to add protection sleeve pipe outside it to protect cable.
Chinese CN201420264661.0 patents provide a kind of cable protective sleeve.The cable protective sleeve is cylindrical shape,
It is and flexible；The cable protective sleeve is woven structure, upper machine through it is close be 100-190 roots/10cm, upper machine filling density is 50-
150/10cm.Cable protective sleeve provided by the invention, cable can be made from the dirt of the body fluid, blood, excreta of patient etc.
Dye, so as to so that monitoring vital sign data it is accurate, and can according to the physiological status of data accurate evaluation patient, and then
Instruct observation and treatment of the doctor to the patient clinical state of an illness.Cable protective sleeve provided by the invention can also prevent cable aging, prolong
Its long service life, it is cost-effective so as to reduce the frequency for changing cable.But this patent cable protection sleeve pipe performance is single,
Impact resistance is small.
Chinese CN301210393767.6 patents provide a kind of Novel cable protection pipe, more particularly to a kind of to apply haydite
It with fiberglass reinforced plastics (fiberglass) is inside and outside laying that sand is as the Cable protecting tube of main intermediate layer reinforcing material,
Inside uses Cable protecting tube of the ceramsite sand mixing unsaturated-resin adhering and solidifying for middle reinforcement layer, it is characterized in that：In pipeline
Layer outer layer is prepared for fiberglass reinforced plastics (fiberglass), and thickness is respectively 0.5-5mm, and intermediate layer is ceramsite sand and unsaturation
The mixing cured enhancement layer formed of resin, thickness 2-12mm.The present invention is used as middle increase from the ceramsite sand through high temperature sintering
Strong layer material, have the characteristics that resistance to compression, corrosion-resistant, high temperature resistant, quality are light.The Cable protecting tube has most in the market
The function and characteristic of Cable protecting tube, possess resistance to compression, antidetonation, corrosion-resistant, the cold jelly of high temperature resistant, isolation easy for installation and good
Protective value；Current most of Cable protecting tubes can be substituted, are a kind of Novel cable protection pipes of high-quality energy-saving environment-friendly type,
And the application product of resource regeneration and digestion environmental pollution thing.But the flexural capacity of this patent cable protection sleeve pipe compared with
It is small, larger impact can not be born.
Although existing cable protection technology can protect core, some problems are remained, such as：1. protective layer list
One, pliability deficiency, pressure-proof and snap-resistent poor-performing, use is limited；2. lay cable on ground, because of sinking of ground or mud
Soil be lost in etc. reason and protection pipe overbending occurs, cause occur protection tracheal rupture phenomenon；3. cable is laid in the air
When, because of bad weathers such as strong wind, the situation for causing cable to be broken by enormous impact；4. in the case of being installed in house, line
Cable flexibility ratio is inadequate, is not easy to shape, the problem of cause room cable in disorder etc..
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art and deficiency, there is provided a kind of cable protection sleeve pipe, Neng Gouguang
The general cable for being applied to protect various laying conditions, flexibility ratio is higher, and pressure-proof and snap-resistent performance and shock resistance are stronger, shielding
Effect is good, stable performance.
To achieve the above object, the present invention realizes according to following technical scheme：
A kind of cable protection sleeve pipe, the cable protection sleeve body inside are provided with cable and place passage, described sleeve pipe sheet
The cross section of body is annular, and described sleeve pipe body is sequentially provided with protective layer one, buffering area, protective layer two from inside to outside；It is described
At least three equally distributed elastic supports in a circumferential direction are provided with buffering area；The elastic support both ends difference
It is connected on protective layer one and protective layer two.
Cable protective sleeve pipe of the present invention has the structure of three-layer protection, and excellent pressure-proof and snap-resistent performance, and anti-
Cable is wrapped in inside protection sleeve pipe by impact capacity, the protective layer one, and there is the protective layer two preferably shielding to imitate
Fruit, stable performance, the elastic support can play good cushioning effect, when cable produced by foreign impacts it is larger
During motional inertia, using elastic support draw high and contractility, infringement of the impact to cable is offset, when cable is by outer
During extruding on boundary's single direction, elastic support eliminates shadow of the extraneous factor to cable by adjusting the compression degree of itself
Ring.
Preferably, the protective layer one is made up of elastomeric material, diametrically with good telescopicing performance, to thickness journey
Degree is different, the irregular cable in cross section can play preferably constraint and fixation, prevent cable move caused by friction and
Electric loss.
The elastic support includes elastic fulcrum bar and spring, and when cable runs into serious extruding, elastic fulcrum bar is being protected
Good supporting role is played between sheath one and protective layer two, effectively prevents casing deformation, eliminates ambient pressure to cable
Infringement；When cable produces motional inertia by foreign impacts power, the supporting role of elastic fulcrum bar and the elasticity of spring are utilized
Flexible ability moves cable small range inside protection sleeve pipe, gradually dissolves influence of the impulsive force to cable.
Bullet recovery rate≤85% of the elastic support, when protecting cable to be caused deformation by external force, eliminate external force
Cable protection sleeve pipe can recover reset condition rapidly.
Preferably, the buffering area is divided into multiple chambers by least three elastic supports, is provided with each chamber
Air cushion, the air cushion maximum volume are slightly less than chamber volume.The air cushion has good elasticity, is relatively suppressed when cable runs into
Power or greater impact masterpiece used time, the air cushion can utilize natural resiliency, and external force is converted into elastic force, eliminate external force to line
The influence of cable.
The protective layer one and cable place the side that passage is connected and are coated with insulating materials, the insulating materials with compared with
High insulaion resistance and compressive resistance, the problems such as effectively avoiding leaking electricity and puncturing；The outside of protective layer two is coated with resistance to height
Warm erosion shield, it can preferably obstruct infringement of the external environment to cable.
Compared with prior art, beneficial effect of the present invention is：
1. cable protective sleeve pipe of the present invention has the structure of three-layer protection, pliability is good, to various laying forms
Cable can play preferable protective effect, there is good shield effectiveness, stable performance；
2. protective layer one of the present invention is made of elastomeric material, cross section irregular line different to fineness
Cable can play preferably constraint and fixation, eliminate friction and electric loss caused by cable movement；
3. cable protective sleeve pipe of the present invention has stronger pressure-proof and snap-resistent performance, the cable laid for ground,
Running into sinking of ground or soil erosion etc. because of single direction stand under load and occurring the situation of pipe sleeve overbending, the buffering
Area can play a supporting role, and and can eliminate infringement of the external force to cable；
4. cable protective sleeve pipe of the present invention has good impact resistance, run into greatly for the cable laid in the air
When wind impact produces motional inertia, the elastic force that power-conversion is elastic support can be eliminated impulsive force pair by the buffering area
The influence of cable；
5. the present invention is reasonable in design, easily sizing, it is easily installed, barrier propterty is good, service life length.
Brief description of the drawings
Fig. 1 is a kind of cable protection sleeve pipe cross-sectional view proposed by the present invention；
Fig. 2 is a kind of cable protection sleeve pipe motional inertia stand under load schematic diagram proposed by the present invention；
Fig. 3 is a kind of cable protection sleeve pipe single direction stand under load schematic diagram proposed by the present invention.
In figure：1st, protective layer two；2nd, elastic support；3rd, protective layer one；4th, cable places passage；5th, buffering area；6th, gas
Pad.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.
Embodiment 1
The present invention provides a kind of cable protection sleeve pipe, and being provided with cable inside the cable protection sleeve body places passage 4,
The cross section of described sleeve pipe body is annular, described sleeve pipe body be sequentially provided with from inside to outside protective layer 1, buffering area 5,
Protective layer 21；Five equally distributed elastic supports 2 in a circumferential direction are provided with the buffering area 5；The elasticity branch
The both ends of support body 2 are connected on protective layer 1 and protective layer 21.
The elastic support 2 includes elastic fulcrum bar and spring.
Embodiment 2
The present invention provides a kind of cable protection sleeve pipe, and compared with Example 1, difference is, is set in the buffering area 5
There are three equally distributed elastic supports 2 in a circumferential direction, buffering area 5 is divided into three chambers by the elastic support 2
Room, is provided with air cushion 6 in each chamber, and the maximum volume of air cushion 6 is slightly less than chamber volume.
Embodiment 3
The present invention provides a kind of cable protection sleeve pipe, and compared with Example 1, difference is, the protective layer 1 by
Elastomeric material is made, diametrically with good telescopicing performance.
Embodiment 4
The present invention provides a kind of cable protection sleeve pipe, and compared with Example 1, difference is, the protective layer 1 with
Cable places the connected side of passage 4 and is coated with insulating materials；The outside of protective layer 21 is coated with fire resistant anticorrosive painting
Layer.
As seen from the above embodiment, the present invention, which provides a kind of cable protective sleeve pipe, has the structure of three-layer protection, pliability
It is good, preferable protective effect can be played to the cable of various laying forms, there is good shield effectiveness, stable performance, institute
Stating cable protective sleeve pipe has preferable pressure-proof and snap-resistent performance and impact resistance, effectively can prevent overbending from causing
The problems such as casing collapse or external impacts cause casing failure, in addition, the present invention is reasonable in design, easily sizing, it is easily installed, prevents
It is good to protect performance, service life length.
It is described above, it is only the optimal specific embodiment of the present invention, but protection scope of the present invention is not limited thereto,
In the range of the technology design of the present invention, a variety of simple variants, these simple variants can be carried out to technical scheme
Belong to protection scope of the present invention.
Claims (6)
1. a kind of cable protection sleeve pipe, the cable protection sleeve body inside is provided with cable and places passage (4), described sleeve pipe sheet
The cross section of body is annular, it is characterised in that described sleeve pipe body is sequentially provided with protective layer one (3), buffering area from inside to outside
(5), protective layer two (1)；At least three equally distributed elastic supports in a circumferential direction are provided with the buffering area (5)
(2)；Elastic support (2) both ends are connected on protective layer one (3) and protective layer two (1).
2. a kind of cable protection sleeve pipe according to claim 1, it is characterised in that the elastic support (2) includes elasticity
Pole and spring.
3. a kind of cable protection sleeve pipe according to claim 1 or claim 2, it is characterised in that the buffering area (5) is elastically supported
Body (2) is divided into multiple chambers, is provided with air cushion (6) in each chamber, air cushion (6) maximum volume is slightly less than chamber volume.
4. a kind of cable protection sleeve pipe according to claim 1, it is characterised in that the protective layer one (3) is placed with cable
The connected side of passage (4) is coated with insulating materials.
5. a kind of cable protection sleeve pipe according to claim 1, it is characterised in that be coated with the outside of the protective layer two (1)
High-temperature resistant anti-corrosive erosion resisting coating.
6. a kind of cable protection sleeve pipe according to claim 1, it is characterised in that the protective layer one (3) is by elastomeric material
It is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940875.3A CN107809098A (en) | 2017-09-30 | 2017-09-30 | A kind of cable protection sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940875.3A CN107809098A (en) | 2017-09-30 | 2017-09-30 | A kind of cable protection sleeve pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107809098A true CN107809098A (en) | 2018-03-16 |
Family
ID=61592674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710940875.3A Withdrawn CN107809098A (en) | 2017-09-30 | 2017-09-30 | A kind of cable protection sleeve pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107809098A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601194A (en) * | 2018-04-28 | 2018-09-28 | 芜湖超源力工业设计有限公司 | A kind of plastic housing plasma processor |
| CN108808611A (en) * | 2018-07-12 | 2018-11-13 | 吴江佳通光缆有限公司 | A kind of cable duct tube that sealing effect is good |
| CN110148919A (en) * | 2019-06-24 | 2019-08-20 | 辽宁工程技术大学 | A kind of coalcutter, which drags, pulls device |
| CN110994495A (en) * | 2019-12-20 | 2020-04-10 | 合肥智瑞工程科技有限公司 | Cable pipeline protection device |
| CN111846232A (en) * | 2020-07-20 | 2020-10-30 | 长沙理工大学 | Working method of rigid-flexible coupling air-drop cargo combined buffer device |
| CN113131424A (en) * | 2021-04-20 | 2021-07-16 | 江苏建筑职业技术学院 | Exposed pipe barrel protection device for electrical engineering |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205001682U (en) * | 2015-07-30 | 2016-01-27 | 浙江吕氏管业有限公司 | Cpvc pipe |
| CN205123199U (en) * | 2015-10-22 | 2016-03-30 | 安吉中电网络工程有限公司 | MPP power cable protection tube |
| CN105633870A (en) * | 2016-02-25 | 2016-06-01 | 成都迅德科技有限公司 | Novel high-voltage power cable protection pipe |
| CN205724800U (en) * | 2016-06-30 | 2016-11-23 | 临沂方圆电气有限公司 | A kind of HDPE cable protection pipe |
| CN205810427U (en) * | 2016-05-31 | 2016-12-14 | 湖州凯博电子线缆有限公司 | Resistance to compression cable |
| CN206489893U (en) * | 2017-02-21 | 2017-09-12 | 江苏耘和线缆有限公司 | A kind of resistance to compression cable |
| CN207283088U (en) * | 2017-09-30 | 2018-04-27 | 武汉资联虹康科技股份有限公司 | A kind of cable protection casing |
-
2017
- 2017-09-30 CN CN201710940875.3A patent/CN107809098A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205001682U (en) * | 2015-07-30 | 2016-01-27 | 浙江吕氏管业有限公司 | Cpvc pipe |
| CN205123199U (en) * | 2015-10-22 | 2016-03-30 | 安吉中电网络工程有限公司 | MPP power cable protection tube |
| CN105633870A (en) * | 2016-02-25 | 2016-06-01 | 成都迅德科技有限公司 | Novel high-voltage power cable protection pipe |
| CN205810427U (en) * | 2016-05-31 | 2016-12-14 | 湖州凯博电子线缆有限公司 | Resistance to compression cable |
| CN205724800U (en) * | 2016-06-30 | 2016-11-23 | 临沂方圆电气有限公司 | A kind of HDPE cable protection pipe |
| CN206489893U (en) * | 2017-02-21 | 2017-09-12 | 江苏耘和线缆有限公司 | A kind of resistance to compression cable |
| CN207283088U (en) * | 2017-09-30 | 2018-04-27 | 武汉资联虹康科技股份有限公司 | A kind of cable protection casing |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601194A (en) * | 2018-04-28 | 2018-09-28 | 芜湖超源力工业设计有限公司 | A kind of plastic housing plasma processor |
| CN108808611A (en) * | 2018-07-12 | 2018-11-13 | 吴江佳通光缆有限公司 | A kind of cable duct tube that sealing effect is good |
| CN110148919A (en) * | 2019-06-24 | 2019-08-20 | 辽宁工程技术大学 | A kind of coalcutter, which drags, pulls device |
| CN110994495A (en) * | 2019-12-20 | 2020-04-10 | 合肥智瑞工程科技有限公司 | Cable pipeline protection device |
| CN110994495B (en) * | 2019-12-20 | 2020-12-15 | 临沂文衡信息技术有限公司 | Cable pipeline protection device |
| CN111846232A (en) * | 2020-07-20 | 2020-10-30 | 长沙理工大学 | Working method of rigid-flexible coupling air-drop cargo combined buffer device |
| CN113131424A (en) * | 2021-04-20 | 2021-07-16 | 江苏建筑职业技术学院 | Exposed pipe barrel protection device for electrical engineering |
| CN113131424B (en) * | 2021-04-20 | 2022-03-25 | 江苏建筑职业技术学院 | Exposed pipe barrel protection device for electrical engineering |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180316 |