CN210865691U - Fireproof multi-core cable - Google Patents
Fireproof multi-core cable Download PDFInfo
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- CN210865691U CN210865691U CN201921897652.4U CN201921897652U CN210865691U CN 210865691 U CN210865691 U CN 210865691U CN 201921897652 U CN201921897652 U CN 201921897652U CN 210865691 U CN210865691 U CN 210865691U
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- protective sheath
- shielding protective
- cable
- protective sleeve
- backup pad
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Abstract
The utility model discloses a fire prevention type multicore cable relates to the cable field, including outer shielding protective sheath, internal shield protective sheath, inner liner and filling layer, the internal shield protective sheath sets up in the inner chamber of outer shielding protective sheath, and the inner liner sets up in the inner chamber of internal shield protective sheath, and the filling layer sets up in the inner chamber of inner liner, is equipped with first flame retardant coating between outer shielding protective sheath and the internal shield protective sheath, and the inner chamber of filling layer is equipped with the resistance to compression subassembly, and the resistance to compression subassembly comprises connecting seat, outside loop bar, bracing piece, spring, and backup pad. The utility model discloses utilize the setting of backup pad, bracing piece and spring, when the cable received outside extrusion force, the backup pad moved to the inboard, and the backup pad drives the bracing piece motion, and the change of relative position takes place with outside loop bar for the bracing piece to extrude the spring, the spring takes place elastic deformation and plays cushioning effect, improvement cable's life to the backup pad.
Description
Technical Field
The utility model relates to a cable field, in particular to fire prevention type multicore cable.
Background
The multi-core cable is a cable with more than one insulated wire core, plays an important role in electronic products and electronic systems, is a key link for connecting various functions of the electronic products, and is widely applied to the fields of aerospace, maritime warships and the like.
Along with the constantly developing of socioeconomic, the quantity of cable increases rapidly to and people's environmental protection consciousness and fire control consciousness constantly strengthen, also constantly improve the quality requirement of cable, but the fireproof effect of present cable is relatively poor, and the cable can't obtain better protection under the great condition of intensity of a fire, simultaneously because the cable most can be buried underground, if do not have good crushing resistance and plasticity, can lead to the cable fragile, thereby reduce the life of cable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fire prevention type multicore cable to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a fireproof multi-core cable comprises an outer shielding protective sleeve, an inner liner and a filling layer, wherein the inner shielding protective sleeve is arranged in an inner cavity of the outer shielding protective sleeve, the inner liner is arranged in an inner cavity of the inner shielding protective sleeve, the filling layer is arranged in an inner cavity of the inner liner, a first fireproof layer is arranged between the outer shielding protective sleeve and the inner shielding protective sleeve, the inner cavity of the filling layer is provided with a compression-resistant assembly, the compression-resistant assembly consists of a connecting seat, outer loop bars, supporting rods, springs and a supporting plate, the outer wall of the connecting seat is fixedly connected with the bottoms of the three outer loop bars, the three outer loop bars are distributed on the outer wall of the connecting seat in an equal angle mode, one ends of the three outer loop bars are respectively provided with three placing grooves, one sides of the inner cavities of the three placing grooves are respectively and fixedly connected with one ends, the outer walls of the three support rods are respectively in sliding sleeve joint with the inner cavities of the three placing grooves, and the other ends of the three support rods are respectively fixedly connected with the inner sides of the three support plates.
Preferably, the inboard of resistance to compression subassembly is equilateral triangle and is equipped with three conductive core, and is three the outer wall of conductive core all is equipped with the inoxidizing coating, and is three the outer wall of inoxidizing coating all is equipped with the second flame retardant coating, and is three the outer wall of second flame retardant coating all is equipped with the insulating layer.
Preferably, the top and the bottom of the connecting seat are symmetrically provided with circular grooves, and one side of the inner cavity of each circular groove is fixedly connected with two connecting rods.
Preferably, the first fireproof layer is a polyolefin layer, and the second fireproof layer is a rock wool rope.
Preferably, the connecting rod is an elastic rubber rod.
Preferably, the supporting plate is a circular arc plate.
The utility model discloses a technological effect and advantage:
1. the utility model utilizes the support plate, the support rod and the spring, when the cable is subjected to external extrusion force, the support plate moves towards the inner side, the support plate drives the support rod to move, the relative position of the support rod and the external loop bar changes, the spring is extruded, and the spring elastically deforms to play a role in buffering the support plate, thereby prolonging the service life of the cable;
2. the utility model discloses utilize first flame retardant coating and second flame retardant coating, first flame retardant coating is the polyolefin material, and the second flame retardant coating is the rock wool rope, carries out dual fire prevention protection, improves the fire behavior of cable to improve the life of cable.
Drawings
Fig. 1 is a schematic front sectional view of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the supporting plate of the present invention.
Fig. 3 is a schematic view of the sectional structure of the external loop bar of the present invention.
In the figure: 1. an outer shielding protective sleeve; 2. a first fire resistant layer; 3. an inner shielding protective sleeve; 4. an inner liner layer; 5. a filling layer; 6. an insulating layer; 7. a second fire-resistant layer; 8. a protective layer; 9. a conductive core; 10. a connecting seat; 11. an outer loop bar; 12. a support bar; 13. a spring; 14. a support plate; 15. a circular groove; 16. A connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a fireproof multi-core cable as shown in figures 1-3, which comprises an outer shielding protective sleeve 1, an inner shielding protective sleeve 3, an inner liner 4 and a filling layer 5, wherein the inner shielding protective sleeve 3 is arranged in the inner cavity of the outer shielding protective sleeve 1, the outer shielding protective sleeve 1 and the inner shielding protective sleeve 3 are both protective layers and play a role of double protection, the inner liner 4 is arranged in the inner cavity of the inner shielding protective sleeve 3, the inner liner 4 is a low-smoke halogen-free polyurethane layer, the filling layer 5 is arranged in the inner cavity of the inner liner 4, the filling layer 5 is fire retardant mud, a first fireproof layer 2 is arranged between the outer shielding protective sleeve 1 and the inner shielding protective sleeve 3, the first fireproof layer 2 is a polyolefin material layer, the inner cavity of the filling layer 5 is provided with a compression-resistant component which plays a buffering role on the cable, the compression-resistant component is composed of a connecting seat 10, an outer, the outer wall of the connecting seat 10 is fixedly connected with the bottoms of the three outer loop bars 11, the connecting seat 10 is a supporting part of the outer loop bars 11, the relative positions of the outer loop bars 11 and the supporting rods 12 can be changed, the three outer loop bars 11 are distributed on the outer wall of the connecting seat 10 at equal angles, one end of each of the three outer loop bars 11 is respectively provided with three placing grooves, one side of the inner cavity of each of the three placing grooves is respectively fixedly connected with one end of each of the three springs 13, and the springs 13 can elastically deform, produce reaction force to bracing piece 12 and backup pad 14, play the effect of buffering, the other end of three spring 13 respectively with the one end fixed connection of three bracing piece 12, the outer wall of three bracing piece 12 cup joints with the inner chamber of three standing groove is slided respectively, the other end of three bracing piece 12 respectively with the inboard fixed connection of three backup pad 14, backup pad 14 is the circular arc board, make backup pad 14 laminate with the inboard of inner liner 4 more.
The inboard of resistance to compression subassembly is equilateral triangle and is equipped with three conductive core 9, and the outer wall of three conductive core 9 all is equipped with inoxidizing coating 8, and inoxidizing coating 8 plays isolated and guard action to conductive core 9, and the outer wall of three inoxidizing coating 8 all is equipped with second flame retardant coating 7, and second flame retardant coating 7 is the rock wool rope, and the outer wall of three second flame retardant coating 7 all is equipped with insulating layer 6, and insulating layer 6 is irradiation crosslinked polyethylene, has played isolated and protective effect.
This practical theory of operation: when the multicore cable receives outside extrusion force, backup pad 14 drives bracing piece 12 and moves to the inboard, bracing piece 12 changes with outside loop bar 11's relative position, and extrude spring 13, make spring 13 take place elastic deformation, spring 13 produces reaction force to bracing piece 12 and backup pad 14, reaction force and extrusion force offset each other, with this effect that reaches the buffering, first flame retardant coating 2 polyolefin material and second flame retardant coating 7 rock wool rope play dual fire prevention to electrically conductive core 9 simultaneously, improve the fire behavior of cable.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides a fire prevention type multicore cable, includes outer shielding protective sheath (1), interior shielding protective sheath (3), inner liner (4) and filling layer (5), its characterized in that: the inner shielding protective sleeve (3) is arranged in an inner cavity of the outer shielding protective sleeve (1), the inner liner (4) is arranged in an inner cavity of the inner shielding protective sleeve (3), the filling layer (5) is arranged in an inner cavity of the inner liner (4), a first fireproof layer (2) is arranged between the outer shielding protective sleeve (1) and the inner shielding protective sleeve (3), the inner cavity of the filling layer (5) is provided with a pressure-resistant component, the pressure-resistant component consists of a connecting seat (10), an outer loop bar (11), a supporting rod (12), a spring (13) and a supporting plate (14), the outer wall of the connecting seat (10) is fixedly connected with the bottoms of the three outer loop bars (11), the three outer loop bars (11) are distributed on the outer wall of the connecting seat (10) at equal angles, three placing grooves are respectively arranged at one ends of the three outer loop bars (11), and one side of the inner cavity of each placing groove is fixedly connected with one end of the, the other ends of the three springs (13) are fixedly connected with one ends of the three support rods (12), the outer walls of the three support rods (12) are sleeved with the inner cavities of the three placing grooves in a sliding mode, and the other ends of the three support rods (12) are fixedly connected with the inner sides of the three support plates (14) respectively.
2. The flameproof multicore cable of claim 1, wherein: the inboard of resistance to compression subassembly is equilateral triangle and is equipped with three electrically conductive core (9), and is three the outer wall of electrically conductive core (9) all is equipped with inoxidizing coating (8), and is three the outer wall of inoxidizing coating (8) all is equipped with second flame retardant coating (7), and is three the outer wall of second flame retardant coating (7) all is equipped with insulating layer (6).
3. The flameproof multicore cable of claim 1, wherein: the top and the bottom of the connecting seat (10) are symmetrically provided with circular grooves (15), and one side of the inner cavity of each circular groove (15) is fixedly connected with two connecting rods (16).
4. The flameproof multicore cable of claim 2, wherein: the first fireproof layer (2) is a polyolefin layer, and the second fireproof layer (7) is a rock wool rope.
5. A fire-resistant multicore cable according to claim 3, wherein: the connecting rod (16) is an elastic rubber rod.
6. The flameproof multicore cable of claim 1, wherein: the supporting plate (14) is an arc plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921897652.4U CN210865691U (en) | 2019-11-06 | 2019-11-06 | Fireproof multi-core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921897652.4U CN210865691U (en) | 2019-11-06 | 2019-11-06 | Fireproof multi-core cable |
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| Publication Number | Publication Date |
|---|---|
| CN210865691U true CN210865691U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921897652.4U Active CN210865691U (en) | 2019-11-06 | 2019-11-06 | Fireproof multi-core cable |
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| CN (1) | CN210865691U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755158A (en) * | 2020-08-06 | 2020-10-09 | 安徽环宇电缆集团有限公司 | Wind power station trades stand wear and tear cable |
| CN111768911A (en) * | 2020-07-08 | 2020-10-13 | 安徽凌宇电缆科技有限公司 | Cable for new energy automobile |
| CN113838613A (en) * | 2021-09-26 | 2021-12-24 | 通鼎互联信息股份有限公司 | Integrated hybrid cable for communication audio and video for household |
-
2019
- 2019-11-06 CN CN201921897652.4U patent/CN210865691U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768911A (en) * | 2020-07-08 | 2020-10-13 | 安徽凌宇电缆科技有限公司 | Cable for new energy automobile |
| CN111768911B (en) * | 2020-07-08 | 2021-09-14 | 安徽凌宇电缆科技有限公司 | Cable for new energy automobile |
| CN111755158A (en) * | 2020-08-06 | 2020-10-09 | 安徽环宇电缆集团有限公司 | Wind power station trades stand wear and tear cable |
| CN113838613A (en) * | 2021-09-26 | 2021-12-24 | 通鼎互联信息股份有限公司 | Integrated hybrid cable for communication audio and video for household |
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