CN209591614U - Tensile type fire protection flame retarding cable - Google Patents

Abstract

The utility model relates to field of cable technology, disclose tensile type fire protection flame retarding cable, it from the inside to the outside successively include core layer, tensile layer, fire protection flame retarding layer and the coat layer of power cable, insulating support is provided in core layer, insulating support is equipped with more cores, core is coated with insulating layer, core layer is coated on outside insulating support and insulating layer, tensile layer includes two semi-circular tubes being symmetric, the interior lateral edge cable of semi-circular tube axially forms several tension chambers in hollow structure, by the way that tension pipe is arranged, improve cable tensile strength, reduce cuticular breakdown of the cable in stretching, avoid cable skin fracture；By the fire protection flame retarding layer of setting, make cable that there is fire-retardant, fireproof characteristic, avoids cable and burnt and broken, improve cable service life.

Description

Tensile type fire protection flame retarding cable

Technical field

The utility model relates to field of cable technology more particularly to tensile type fire protection flame retarding cables.

Background technique

Wire and cable is to transmit electric (magnetic) energy, information and the wire product for realizing electromagnetic energy conversion.The electric wire electricity of broad sense Cable is also referred to simply as cable, and cable application is in all trades and professions, such as electric system: the wire and cable product that electric system uses is main There are aerial bare wire, busbar connector, power cable, branch cable, electromagnetic wire and power equipment electrical equipment wire and cable etc.； Information transmission: the wire and cable for the information transmission system mainly have local cable, camera cable, electronic cable, radio-frequency cable, Fiber optic cable, data cable, electromagnetic wire, power communication or other composite cables etc.；Instrument system: this part is in addition to aerial bare wire Almost other all products have application, but mainly power cable, electromagnetic wire, data cable, instrument and meter cable etc..

Existing cable is all by the core Shu Zucheng in the sheath and sheath of outer layer, and every core in core beam is by insulating Layer and linear conductor form, and pass through insulating layer mutually insulated between each core.The cable adopted the structure, in motor and electricity It controls in platform moving process, motor and automatically controlled power of pullling act on core and sheath, anti-due to core and sheath Drawing ability is all poor, therefore circumnutates caused by frequent mobile repeatedly and under the action of larger pulling force, the epidermis of cable is easily sent out Phenomena such as raw fracture, abrasion, to influence the service life of cable.

It can be seen from the above, needing to provide a kind of cable, to solve cable skin easy fracture, epidermis problem easy to wear.

Utility model content

In view of this, the purpose of the utility model is to provide a kind of tensile type fire protection flame retarding cables, for solving background skill The cable skin easy fracture mentioned in art, the problem of being easy to happen fire.

The utility model solves above-mentioned technical problem by following technological means:

Tensile type fire protection flame retarding cable, the cable from the inside to the outside successively include core layer, tensile layer, fire protection flame retarding layer and The coat layer of power cable is provided with insulating support in the core layer, and the insulating support is equipped with more cores, the core outsourcing It is covered with insulating layer, the core layer is coated on outside the insulating support and insulating layer, and the tensile layer includes two in symmetrical point The semi-circular tube of cloth, the interior lateral edge cable of the semi-circular tube axially form several tension chambers in hollow structure, the semi-circular tube Outer lateral edge cable axially form spiral non-slip groove, several tension chambers and spiral non-slip groove mutual dislocation are distributed in semicircle Inside and outside pipe.

Further, the outer wall spiral winding of the spiral non-slip groove has reinforced pipe, and the reinforced pipe is wound on spiral In non-slip groove.

In use, reinforced pipe is wound in spiral non-slip groove by the reinforced pipe of setting, the anti-of cable has both been improved Performance is pressed, and wraps two semi-circular tubes, the shape for stabilizing cable avoids be oppositely arranged two semi-circular tubes from generating opposite move It is dynamic, the normal use of cable is not influenced.

Further, the core includes round core and oval core, opens up that there are four circular troughs on the insulating support With four oval grooves, the circular trough and the oval groove are alternately arranged on insulating support.

In use, circular and elliptical core can be placed in same using the circular trough and oval groove of setting In cable, the placement region of different shape cable is provided.

Further, the inner sidewall of the tension chamber is fixedly installed with tension item.

In use, enhancing the compression strength and deformation recovery capability of tension chamber using the tension item of setting, avoiding semicircle Pipe, which is excessively stretched, to be caused to split, while can preferably restore deformation after drawing high.

Further, integrally formed with reinforcing rib in the reinforced pipe.

In use, improving the intensity of reinforced pipe using the reinforcing rib of setting, cable being made to have better anti-pressure ability.

Further, the outer surface of the reinforced pipe is integrally formed with wave groove.

In use, adopting the structure design, increase the frictional resistance of cable surface, when cable setting is more intensive, electricity When cable stacks, can preferably prevent the cable stacked from sliding axially by wave groove influences the setting of cable.

The utility model has the beneficial effects that

1. be wrapped in tension pipe on the outside of cable by setting, due to the interior lateral edge cable of semi-circular tube axially form it is several Tension chamber in hollow structure, when cable is produced axial stretcher strain by external force, tension chamber phase in hollow structure Have better deformability for solid construction, avoids semi-circular tube fracture during stretching, improve the pull resistance of cable Energy；By the reinforced pipe of setting, since reinforced pipe is wrapped in spiral non-slip groove, the compressive property of cable, but also packet have not only been improved Two semi-circular tubes are wrapped, avoids two semi-circular tubes from generating relative movement, does not influence the normal use of cable.

2. circular and elliptical core can be placed in same cable by the circular trough and oval groove of setting It is interior, the placement region of different shape cable is provided.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of tensile type fire protection flame retarding cable in the utility model embodiment；

Fig. 2 is the structural schematic diagram one of tension pipe in the utility model embodiment；

Fig. 3 is the structural schematic diagram two of tension pipe in the utility model embodiment；

Appended drawing reference, 1- insulating support, 2- insulating layer, 3- semi-circular tube, 401- tension chamber, 402- spiral non-slip groove, 5- add Qiang Guan, 6- fire protection flame retarding layer, 7- the coat layer of power cable, 8- circle core, 9- ellipse core, 10- circular trough, 11- oval groove, 12- Tension item, 13- reinforcing rib, 14- wave groove.

Specific embodiment

The utility model is described in detail below with reference to the drawings and specific embodiments:

As shown in Figure 1-3, tensile type fire protection flame retarding cable provided by the utility model, cable successively includes line from the inside to the outside The material of sandwich layer, tensile layer, fire protection flame retarding layer 6 and the coat layer of power cable 7, the coat layer of power cable 7 is polyvinyl chloride, passes through the electricity of setting Cable restrictive coating 7, for enhancing cable corrosion resistance；Insulating support 1 is provided in core layer, insulating support 1 is equipped with more Core 8, core 8 are coated with insulating layer 2, and core layer is coated on outside insulating support 1 and insulating layer 2, and core layer is by ceramic SiClx Rubber is constituted, and tensile layer includes two semi-circular tubes being symmetric 3, and the interior lateral edge cable of semi-circular tube 3 axially forms several Tension chamber 401 in hollow structure, the outer lateral edge cable of semi-circular tube 3 axially form spiral non-slip groove 402, several tension chambers 401 and 402 mutual dislocation of spiral non-slip groove be distributed in inside and outside semi-circular tube 3, the outer wall spiral winding of spiral non-slip groove 402 There is reinforced pipe 5, reinforced pipe 5 is wound in spiral non-slip groove 402；Insulating support 1 is by the fire-retardant polyene of low smoke, zero halogen ceramic Hydrocarbon and low smoke, zero halogen cross-linked polyolefin double-layer coextrusion form, and the material of insulating layer 2 is rubber, by such insulating support 1 and absolutely The material of edge layer 2 is constituted, and improves the insulation performance of cable.

By the tension chamber 401 in hollow structure of setting, can reduce the area in 3 section of semi-circular tube, when cable by When external force produces axial stretcher strain, tension chamber 401 in hollow structure has better deformation relative to solid construction Ability avoids semi-circular tube fracture during stretching in certain deformation range, improves the tensile property of cable；Reinforced pipe 5 It is wrapped in spiral non-slip groove 402, so that cable is had preferable compressive property and bending resistance, while in the work of non-slip groove 402 Under, reinforced pipe 5 can be also fixed semi-circular tube 3, and preventing two to be oppositely arranged, semi-circular tube 3 is opposite to be slided；Fire protection flame retarding layer 6 Material be that phenolic resin by the fire protection flame retarding layer 6 of setting improves fireproofing of cable, flame-retarding characteristic.

In the present embodiment, core includes round core 8 and oval core 9, opens up that there are four circular troughs 10 on insulating support 1 With four oval grooves 11, circular trough 10 and oval groove 11 are alternately arranged on insulating support 1；By the circular trough 10 of setting and ellipse Circular and elliptical core can be placed in same cable, provide the placement region of different shape cable by circular groove.

In the present embodiment, it is equipped with tension item 12 in tension chamber 401, enhances the pressure resistance of tension chamber 401 to a certain extent Degree and deformation recovery capability, can preferably prevent semi-circular tube 3 to be excessively stretched causes to split, while can preferably restore after drawing high Deformation.

In the present embodiment, by the reinforcing rib 13 of setting, the intensity of reinforced pipe 5 is improved, cable is made to have better resistance to compression Ability.

In the present embodiment, the outer surface of reinforced pipe 5 is designed integrally formed with wave groove 14 by such structure, increases electricity The frictional resistance on cable surface can preferably prevent stacking by wave groove 14 when cable setting is more intensive, cable is stacked Cable, which slides axially, influences the setting of cable.

Above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although referring to preferred embodiment pair The utility model is described in detail, those skilled in the art should understand that, it can be to the technology of the utility model Scheme is modified or replaced equivalently, and without departing from the objective and range of technical solutions of the utility model, should all be covered In the scope of the claims of the utility model.Technology that the utility model is not described in detail, shape, construction portion are known Technology.

Claims (6)

1. tensile type fire protection flame retarding cable, it is characterised in that: the cable successively includes core layer, tensile layer, prevents from the inside to the outside Fiery flame-retardant layer (6) and the coat layer of power cable (7) are provided with insulating support (1) in the core layer, and the insulating support (1) wears Have more cores (8), the core (8) is coated with insulating layer (2), the core layer be coated on the insulating support (1) and Outside, the tensile layer includes two semi-circular tubes being symmetric (3), the interior lateral edge cable of the semi-circular tube (3) to insulating layer (2) Several tension chambers (401) in hollow structure axially are formed, the outer lateral edge cable of the semi-circular tube (3) axially forms spiral Non-slip groove (402), several tension chambers (401) and spiral non-slip groove (402) mutual dislocation are distributed in the inside and outside of semi-circular tube (3) Two sides.

2. tensile type fire protection flame retarding cable according to claim 1, it is characterised in that: the spiral non-slip groove (402) Outer wall spiral winding has reinforced pipe (5), and the reinforced pipe (5) is wound in spiral non-slip groove (402).

3. tensile type fire protection flame retarding cable according to claim 2, it is characterised in that: the core includes round core (8) and oval core (9), open up that there are four circular trough (10) and four oval grooves (11), the circles on the insulating support (1) Shape slot (10) and the oval groove (11) are alternately arranged on insulating support (1).

4. tensile type fire protection flame retarding cable according to claim 3, it is characterised in that: the inside of the tension chamber (401) Wall is fixedly installed with tension item (12).

5. tensile type fire protection flame retarding cable according to claim 4, it is characterised in that: in the reinforced pipe (5) integrally at Type has reinforcing rib (13).

6. tensile type fire protection flame retarding cable according to claim 5, it is characterised in that: the outer surface of the reinforced pipe (5) Integrally formed with wave groove (14).