CN215450966U

CN215450966U - Halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable

Info

Publication number: CN215450966U
Application number: CN202121806466.2U
Authority: CN
Inventors: 朱为坤; 钱俊怡; 刘曹江; 何永华; 张静
Original assignee: Anhui Shangwei Cable Co ltd
Current assignee: Anhui Shangwei Cable Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-01-07
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable, which belongs to the technical field of cables. When one side of the cable is impacted or extruded, the gas close to the stressed part can be conveyed into the notches at other positions, so that the deformation of the cable is assisted, and the impact force or extrusion force applied to the cable is partially offset in the deformation process, so that the compression-resistant buffering effect of the cable is enhanced.

Description

Halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable

Technical Field

The utility model relates to the technical field of cables, in particular to a halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable.

Background

The cable includes power cable, control cable, compensation cable, shielding cable, high temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable, etc.; they are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

The cable of present majority receives external impact or extruded effect more or less in the use, leads to the cable probably to be extrudeed and take place deformation in the use, but the elasticity performance of present majority cable itself is not good, leads to it can be by extrusion deformation and can not reset when receiving the exogenic action to can cause permanent damage to the cable, and can bring the influence to the safety in utilization of cable.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to provide a halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable, which aims to solve the problems in the background art.

2. Technical scheme

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a there is not steamed low cigarette low toxicity fire-resistant flame strikes fire resisting cable, includes the inner sheath, the inside equidistant of inner sheath is equipped with the bouquet, and the outside cover of inner sheath is equipped with shielding layer, flame retardant coating, oversheath in proper order, the bouquet includes the wire and the insulating layer of cladding in its outside, the oversheath is made by polyolefin material, equidistant notch that is the annular distribution of offering on the inner wall of oversheath, and the inside equidistant elastic support body that is equipped with one end and flame retardant coating outer wall contact of notch, the shaping is equipped with the grafting piece that is located the notch outside and is latticed structure on the inner wall of oversheath, and offers the recess that supplies grafting piece plug-in connection on the outer wall of flame retardant coating, the grafting piece is through gluing layer and recess sealing connection, and every recess forms a sealed cavity respectively on the outer wall of flame retardant coating under the cooperation of grafting piece and recess, and communication holes arranged on the outer sheath are formed between every two adjacent notches on the same circular surface, and every two adjacent notches are communicated through the communication holes.

Furthermore, annular gaps are formed in the outer wall of the outer sheath at equal intervals, a lantern ring body made of fireproof materials is sleeved on each annular gap in a rotating mode, baffles are arranged on the outer wall of the lantern ring body in an equidistant forming mode, and the lantern ring body is arranged in the annular gaps.

Furthermore, sliding layers are adhered to the outer wall of the annular gap and the inner wall of the ferrule body.

Still further, the sliding layer is made of a nylon material.

Further, the elastic support is made of a rubber material.

Further, the inner sheath includes that centre of a circle department is the soft glue layer of cavity setting, locates the support column of soft glue layer centre of a circle department, equidistant between soft glue layer and the support column offer with the cable harness one-to-one and be used for holding the annular breach of cable harness, the area that the cable harness occupied on the soft glue layer is greater than its area that occupies on the support column.

Further, the inner sheath is made of a rubber material.

3. Advantageous effects

1. According to the utility model, each notch forms a sealed chamber on the outer wall of the fireproof layer under the matching of the insertion block and the groove, and every two adjacent notches on the same circular surface are communicated through the communication hole, so that when one side of the cable is impacted or extruded, gas close to the stressed part can be conveyed into the notches at other positions, so that the deformation of the cable is assisted, and the impact force or extrusion force on the cable is partially offset in the deformation process, so that the compression-resistant buffering effect of the cable is enhanced.

2. When the notch deforms under stress, the elastic support bodies in the notches at different positions correspondingly extend or contract, and when the notch is not under the action of external force, the elastic support bodies can help the deformed notch to quickly reset under the elastic action of the elastic support bodies, so that the outer sheath can always have elasticity, and the buffering effect of the outer sheath on the external force is ensured.

3. When the cable is impacted by wind power and flame, the sleeve ring body can rotate under the impact action of the cable on the baffle, the dragging action of external impact force on the cable can be relieved through the rotation of the sleeve ring body, so that the damage of the external impact force on the cable is reduced, the cable can be used in areas with high wind power and severe environments, and the application range of the cable is widened.

4. The polyolefin material has certain fireproof and corrosion-resistant properties, so that the protection effect of the outer sheath on the cable bundle on the inner side of the outer sheath is improved, and meanwhile, the polyolefin material has low smoke and halogen-free effects, so that the outer sheath cannot generate toxic smoke after combustion, and the influence of the cable on the environment in the use process is reduced.

5. According to the utility model, the cable bundle can be arranged in the inner sheath in a clamping manner by splicing the soft adhesive layer and the support column, the connection mode is simple, the cable is convenient to manufacture, and the cable is convenient to rapidly strip when stripped at the later stage.

Drawings

FIG. 1 is a schematic front view of the internal structure of the present invention;

FIG. 2 is a schematic structural view of the outer sheath of FIG. 1;

FIG. 3 is a schematic structural view of the fire-blocking layer of FIG. 1;

FIG. 4 is a schematic view of the outer sheath deployed;

FIG. 5 is a cross-sectional view of the cable at the annular gap;

FIG. 6 is a schematic structural view of the ferrule body of FIG. 5;

fig. 7 is a schematic structural view of the outer sheath of fig. 5.

Reference numerals: 1. a soft adhesive layer; 2. a support pillar; 3. a cable bundle; 4. a shielding layer; 5. a fire barrier layer; 6. an outer sheath; 7. a recess; 8. an elastic support; 9. an insertion block; 10. a groove; 11. a bonding layer; 12. a communicating hole; 13. an annular gap; 14. a ferrule body; 15. a baffle plate; 16. and a sliding layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1, 2, 3, 4, a halogen-free low-smoke low-toxicity flame-resistant impact fire-resistant cable comprises an inner sheath, wherein cable bundles 3 are arranged in the inner sheath at equal intervals, a shielding layer 4, a fire-proof layer 5 and an outer sheath 6 are sequentially sleeved outside the inner sheath, the cable bundles 3 comprise wires and insulating layers coated outside the cable bundles, the outer sheath 6 is made of polyolefin materials, notches 7 which are distributed in an annular manner are formed in the inner wall of the outer sheath 6 at equal intervals, elastic supporting bodies 8 with one ends contacted with the outer wall of the fire-proof layer 5 are arranged in the notches 7 at equal intervals, the elastic supporting bodies 8 are made of rubber materials, plugging blocks 9 which are positioned outside the notches 7 and are of a grid-shaped structure are formed on the inner wall of the outer sheath 6, grooves 10 for plugging the plugging blocks 9 are formed in the outer wall of the fire-proof layer 5, the plugging blocks 9 are hermetically connected with the grooves 10 through adhesive layers 11, each notch 7 forms a sealed chamber on the outer wall of the fireproof layer 5 under the matching of the inserting block 9 and the groove 10, a communication hole 12 arranged on the outer sheath 6 is arranged between every two adjacent notches 7 on the same circular surface, and every two adjacent notches 7 are communicated through the communication hole 12;

as shown in fig. 5, annular gaps 13 are formed in the outer wall of the outer sheath 6 at equal intervals, each annular gap 13 is rotatably sleeved with a ring body 14 made of a fireproof material, baffles 15 are formed on the outer wall of each ring body 14 at equal intervals, and the ring bodies 14 are arranged in the annular gaps 13;

as shown in fig. 6 and 7, the outer wall of the annular gap 13 and the inner wall of the collar body 14 are both adhered with a sliding layer 16, and the sliding layer 16 can lubricate the connection part between the collar body 14 and the annular gap 13, so that the collar body 14 can smoothly rotate under the action of external impact force to ensure the buffering effect of the collar body 14 on the external impact force, and the sliding layer 16 is made of nylon material;

as shown in fig. 1, 2, the inner sheath includes that centre of a circle department is the soft glue layer 1 of cavity setting, locate the support column 2 of 1 centre of a circle department of soft glue layer, equidistant between soft glue layer 1 and the support column 2 offer with 3 one-to-ones of cable harness and be used for holding the annular breach 13 of cable harness 3, the area that cable harness 3 took on soft glue layer 1 is greater than its area that takes on support column 2, through the concatenation of soft glue layer 1 with support column 2, can install the inside at the inner sheath with the form of joint with cable harness 3, this kind of connected mode is simple, be favorable to the preparation of cable, and when this cable is peeled off at the later stage, still make things convenient for quick peeling off of cable harness 3, the inner sheath is made by rubber materials.

The specific application process of the halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable comprises the following steps: when one side of the cable is impacted by external force or extruded, namely the external force can cause the action of force on the notches 7 on the cable, at the moment, the two adjacent notches 7 on the same circular surface are communicated, gas close to the stressed part can be conveyed into the notches 7 at other positions, namely the notches 7 close to the stressed part of the cable can be compressed, and the notches 7 at other positions can be enlarged, so that the deformation of the cable is assisted, and the impact force or extrusion force on the cable is partially offset in the deformation process, so that the compression-resistant buffering effect of the cable is enhanced;

in addition, when the notch 7 deforms under stress, the elastic support body 8 in the notch 7 at different positions can correspondingly extend or contract, and when the notch 7 is not acted by external force, the elastic action of the elastic support body 8 can help the deformed notch 7 to quickly reset so as to ensure that the outer sheath 6 can always have elasticity and the buffering effect of the outer sheath on the external force;

when the cable is impacted by wind power and flame, the lantern ring body 14 can rotate under the impact action of the cable on the baffle 15, and the damage to the cable caused by external impact force can be counteracted through the rotation of the lantern ring body 14, so that the cable can be used in areas with high wind power and severe environments, and the application range of the cable is widened;

in addition, the outer sheath 6 is made of polyolefin materials, so that the cable has certain fireproof and corrosion resistant performances in the using process, and the polyolefin materials have low smoke and halogen-free effects, so that the outer sheath 6 cannot generate toxic smoke after combustion, and the influence of the cable on the environment in the using process is reduced;

when the regional conflagration that takes place at cable place, accessible flame retardant coating 5, the fire prevention effect that shielding layer 4 has, can be to the inboard protection of preventing fires of cable, still can reduce the damage that external intensity of a fire caused to it through the lantern ring body 14 of being made by fire resistive material simultaneously to make lantern ring body 14 still can continue to cushion the protection to the impact that the intensity of a fire caused the cable under certain intensity of a fire, just so accomplished this does not have a halogen low cigarette low toxicity fire-resistant flame and strike fire-resistant cable's use.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a there is not steamed low cigarette low toxicity fire-resistant flame strikes fire resisting cable, includes the inner sheath, the inside equidistant of inner sheath is equipped with cable harness (3), and the outside of inner sheath is overlapped in proper order and is equipped with shielding layer (4), flame retardant coating (5), oversheath (6), cable harness (3) include the wire and cladding at the insulating layer in its outside, its characterized in that, oversheath (6) are made by polyolefin material, equidistant notch (7) that are the annular distribution of offering on the inner wall of oversheath (6), and equidistant elastic support body (8) that are equipped with one end and flame retardant coating (5) outer wall contact in inside of notch (7), take shape on the inner wall of oversheath (6) and be located the notch (7) outside and be grafting piece (9) of latticed structure, and offer on the outer wall of flame retardant coating (5) and supply to peg graft piece (9) plug connection's recess (10), the plug-in block (9) is connected with the groove (10) in a sealing mode through the adhesive layer (11), each notch (7) forms a sealed cavity on the outer wall of the fireproof layer (5) under the matching of the plug-in block (9) and the groove (10), a communicating hole (12) formed in the outer sheath (6) is formed between every two adjacent notches (7) on the same circular surface, and every two adjacent notches (7) are communicated through the communicating hole (12).

2. The halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable is characterized in that annular notches (13) are formed in the outer wall of the outer sheath (6) at equal intervals, a lantern ring body (14) made of a fire-resistant material is sleeved on each annular notch (13) in a rotating mode, a baffle (15) is formed in the outer wall of the lantern ring body (14) at equal intervals, and the lantern ring body (14) is arranged in the annular notches (13).

3. The halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable according to claim 2, wherein sliding layers (16) are adhered to the outer wall of the annular notch (13) and the inner wall of the lantern ring body (14).

4. A halogen-free low-smoke low-toxicity flame-resistant impact-resistant fire-resistant cable according to claim 3, characterized in that the sliding layer (16) is made of nylon material.

5. A halogen-free low-smoke low-toxicity flame-impact-resistant fire-resistant cable according to claim 1, characterized in that the elastic support (8) is made of rubber material.

6. The fire-resistant cable is strikeed to fire-resistant flame of no halogen low smoke low toxicity, its characterized in that, the inner sheath includes centre of a circle department and is soft glue layer (1) of cavity setting, locates support column (2) of soft glue layer (1) centre of a circle department, equidistant annular breach (13) of just being used for holding cable harness (3) with cable harness (3) one-to-one are offered between soft glue layer (1) and support column (2), the area that cable harness (3) occupy on soft glue layer (1) is greater than its area that occupies on support column (2).

7. The halogen-free, low-smoke, low-toxicity, flame-impact-resistant, fire-resistant cable according to claim 1, wherein the inner sheath is made of a rubber material.