阅读说明：本技术 一种多股独立式电线电缆 (Multi-strand independent wire cable ) 是由 黄惠娟 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种多股独立式电线电缆,包括多股电缆芯的外侧设置有绝缘层内护套,绝缘层内护套的内部设置具有受热喷料功能的阻燃组件,绝缘层内护套设置有多个,多个绝缘层内护套环绕着外护套呈圆周分布,多个绝缘层内护套的外侧设置有防护架,防护架是由环形板、支撑轴、多个支板组成的,防护架与绝缘层内护套之间设置有填充剂,外护套的内部设置有阻燃剂,外护套与防护架之间且位于阻燃剂的外侧设置有加强组件；有益效果：本发明提出多股独立式电线电缆通过绝缘层内护套加设有阻燃组件,起到灭火的效果,从而保证电缆的正常使用。(The invention discloses a multistrand independent wire cable, which comprises a multistrand cable core, wherein an insulating layer inner sheath is arranged on the outer side of the multistrand cable core, a flame retardant component with a heated material spraying function is arranged in the insulating layer inner sheath, a plurality of insulating layer inner sheaths are arranged on the insulating layer inner sheath, the insulating layer inner sheaths are distributed circumferentially around an outer sheath, a protective frame is arranged on the outer sides of the insulating layer inner sheaths, the protective frame is composed of an annular plate, a supporting shaft and a plurality of supporting plates, a filling agent is arranged between the protective frame and the insulating layer inner sheath, a flame retardant is arranged in the outer sheath, and a reinforcing component is arranged between the outer sheath and the protective frame and positioned on the outer side of the flame retardant; has the advantages that: the invention provides a multi-strand independent wire cable which is provided with a flame retardant component through an inner sheath of an insulating layer, so that the fire extinguishing effect is achieved, and the normal use of the cable is ensured.)

1. The utility model provides a stranded stand alone type wire and cable, includes stranded cable core and oversheath which characterized in that: an insulating layer inner sheath is arranged on the outer side of the multi-strand cable core, a flame retardant component with a heated material spraying function is arranged inside the insulating layer inner sheath,

the insulating layer inner sheath is provided with a plurality ofly, and a plurality of insulating layer inner sheaths are the circumference around the oversheath and distribute, and is a plurality of the outside of insulating layer inner sheath is provided with the protection frame, the protection frame comprises annular plate, back shaft, a plurality of extension board, be provided with the filler between protection frame and the insulating layer inner sheath, the inside of oversheath is provided with the fire retardant, the outside that just is located the fire retardant between oversheath and the protection frame is provided with the reinforcement subassembly.

2. A multi-strand, freestanding wire cable as claimed in claim 1, wherein: the flame retardant component is provided with a plurality of groups, and the fire retardant components of the plurality of groups are distributed along the axial arrangement of the inner sheath of the insulating layer, and each group is provided with a plurality of fire retardant components, and the fire retardant components are distributed along the inside of the inner sheath of the insulating layer in a circumferential manner, and each fire retardant component comprises an air guide cavity, a limiting cavity, an air bag, an air storage cavity, an ejector rod, a push block, fireproof particles, a particle outlet hole and a reset component.

3. A multi-strand, freestanding wire cable as claimed in claim 2, wherein: one end of the air guide cavity is communicated with the outside, the other end of the air guide cavity is communicated with the limiting cavity, waterproof films are arranged at the openings of the air guide cavity and the grain outlet hole, the air storage cavity is connected with the air bag through a fixing ring, and the air bag is located in the limiting cavity.

4. A multi-strand, freestanding wire cable as claimed in claim 2, wherein: one side in spacing chamber is provided with the guide slot, the activity is provided with the ejector pin on the guide slot, it stores the groove to be provided with between grain outlet hole and the guide slot, it is provided with the fire prevention granule to store the inslot, the one end of ejector pin is connected with the ejector pad, the contact between the one end of ejector pin and the gasbag, grain outlet hole is provided with a plurality ofly, and a plurality of grain outlet holes are the directional cable core distribution of slope, one side of ejector pad is located the inside that stores the groove and is provided with reset assembly.

5. A multi-strand, freestanding wire cable as claimed in claim 4, wherein: the reset assembly comprises a supporting pipe, a traction rod, a reset spring and a limiting block, wherein the supporting pipe is fixed on one side of the storage groove, the traction rod is fixed on one side of the push block, a limiting groove is formed in the supporting pipe, the limiting block is connected to the limiting groove in a sliding mode, and the limiting block is welded at one end of the traction rod.

6. A multi-strand, freestanding wire cable as claimed in claim 5, wherein: a return spring is arranged between the limiting block and the supporting tube, and a sealing ring is arranged at an opening of the supporting tube.

7. A multi-strand, freestanding wire cable as claimed in claim 1, wherein: and a support plate is arranged between the annular plate and the support shaft, is distributed circumferentially around the support shaft and is distributed with the inner sheath of the insulating layer in a staggered manner.

8. A multi-strand, freestanding wire cable as claimed in claim 1, wherein: the reinforced assembly comprises a limiting ring cylinder, a fixed sleeve ring and a steel wire, the flame retardant is located inside the limiting ring cylinder, the outer side and the inner side of the limiting ring cylinder are provided with the fixed sleeve ring, the fixed sleeve ring located on the inner side of the limiting ring cylinder is inserted into the annular plate, the fixed sleeve ring is provided with a plurality of fixed sleeve rings, the plurality of fixed sleeve rings are distributed along the outer side of the limiting ring cylinder in a circumferential mode, and the plurality of fixed sleeve rings are inserted into the fixed sleeve ring to form the steel wire.

Technical Field

The invention relates to the technical field of wires and cables, in particular to a multi-strand independent wire and cable.

Background

The conventional cable is connected with equipment through a connector for use, but no good protection device is arranged at the connector position, the cable is easily ignited at the exposed cable connector position, or the cable connector is oxidized and heated during use, insulation breakdown is possibly caused to form short circuit, the cable is ignited, and the normal use of the cable is influenced.

Disclosure of Invention

The present invention is directed to a multi-strand freestanding wire cable that solves the problems set forth above in the background.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a stranded stand alone type wire and cable, includes stranded cable core and oversheath, stranded the outside of cable core is provided with the insulating layer inner sheath, the inside setting of insulating layer inner sheath has the fire-retardant subassembly of being heated and spouting the material function, the insulating layer inner sheath is provided with a plurality ofly, and a plurality of insulating layer inner sheaths are the circumference around the oversheath and distribute, and is a plurality of the outside of insulating layer inner sheath is provided with the fender bracket, the fender bracket comprises annular plate, back shaft, a plurality of extension boards, be provided with the filler between fender bracket and the insulating layer inner sheath, the inside of oversheath is provided with the fire retardant, the outside that just is located the fire retardant between oversheath and the fender bracket is provided with the subassembly of strengthening.

Preferably, the flame retardant components are provided with a plurality of groups, the flame retardant components are distributed along the axial direction of the inner sheath of the insulating layer, each group is provided with a plurality of flame retardant components, the flame retardant components are distributed along the inner part of the inner sheath of the insulating layer in a circumferential mode, and each flame retardant component comprises an air guide cavity, a limiting cavity, an air bag, an air storage cavity, an ejector rod, a push block, fireproof particles, a particle outlet hole and a reset component.

Preferably, one end of the air guide cavity is communicated with the outside, the other end of the air guide cavity is communicated with the limiting cavity, waterproof films are arranged at the openings of the air guide cavity and the grain outlet hole, the air storage cavity is connected with the air bag through a fixing ring, and the air bag is located in the limiting cavity.

Preferably, one side in spacing chamber is provided with the guide slot, the activity is provided with the ejector pin on the guide slot, it stores the groove to be provided with between grain outlet hole and the guide slot, it is provided with the fire prevention granule to store the inslot, the one end of ejector pin is connected with the ejector pad, the contact between the one end of ejector pin and the gasbag, grain outlet hole is provided with a plurality ofly, and a plurality of grain outlet holes are the directional cable core distribution of slope, one side of ejector pad is located the inside that stores the groove and is provided with reset assembly.

Preferably, the reset assembly comprises a supporting pipe, a traction rod, a reset spring and a limiting block, the supporting pipe is fixed on one side of the storage groove, the traction rod is fixed on one side of the push block, the limiting groove is formed in the supporting pipe, the limiting block is connected to the limiting groove in a sliding mode, and the limiting block is welded at one end of the traction rod.

Preferably, a return spring is arranged between the limiting block and the supporting tube, and a sealing ring is arranged at an opening of the supporting tube.

Preferably, a support plate is arranged between the annular plate and the support shaft, and the support plate is circumferentially distributed around the support shaft and is in staggered distribution with the inner sheath of the insulating layer.

Preferably, strengthen the subassembly and include a spacing ring section of thick bamboo, the fixed lantern ring and steel wire, the fire retardant is located the inside of a spacing ring section of thick bamboo, the outside and the inboard of a spacing ring section of thick bamboo all are provided with the fixed lantern ring, and the fixed lantern ring that is located a spacing ring section of thick bamboo inboard is pegged graft on the annular slab, fixed lantern ring is provided with a plurality ofly, and a plurality of fixed lantern rings are the circumference along the outside of a spacing ring section of thick bamboo and distribute, and is a plurality of it has the steel wire to peg graft on the fixed lantern ring.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides a multi-strand independent wire cable, which is additionally provided with a flame retardant component through an insulating layer inner sheath, when a cable core joint is on fire, the insulating layer inner sheath is over-high in temperature, so that a waterproof film falls off, at the moment, heat is diffused into the insulating layer inner sheath through a gas conducting cavity, so that gas in a gas storage cavity expands, an air bag is deformed and expanded in a limiting cavity, a push rod and a push block are pushed to move towards a grain outlet hole, so that fireproof particles in a storage groove are sprayed to the joint on fire through the grain outlet hole, the expansion of the air bag can realize automatic spraying of the fireproof particles to the cable core joint, a fire extinguishing effect is achieved, and the normal use of the cable is ensured;

2. according to the invention, the reinforcing component is additionally arranged on the outer sheath of the multi-strand independent wire cable, the strength of the outer sheath of the cable is enhanced through the arrangement of the reinforcing component, the outer sheath is prevented from being easily broken when the cable is pulled, meanwhile, the position of the flame retardant is limited by the reinforcing component, the flame retardant protects the outer sheath when a cable core joint is on fire, and the fire extinguishing effect is further achieved.

3. According to the multi-strand independent wire and cable, the reset assembly is additionally arranged on the push block, when a cable core connector is on fire, heat generated in a short time is diffused to the inner sheath of the insulating layer, so that the air bag is heated and expanded, the push rod and the push block are pushed to move back and forth under the action of the reset assembly, further force is conveniently stored, fireproof particles in the storage tank are fully sprayed out, a full fire extinguishing effect is achieved, and the practicability of the device is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a reinforcement assembly of the present invention;

FIG. 3 is a cross-sectional view of a flame retardant assembly of the invention;

FIG. 4 is a schematic view of the construction of the outer sheath of the present invention;

FIG. 5 is an enlarged schematic view of FIG. 4 at A according to the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 5B according to the present invention.

In the figure: a cable core 1; an outer sheath 2; an insulating layer inner sheath 3; a flame retardant component 4; a gas-conducting chamber 41; a waterproof film 411; a spacing cavity 42; an air bag 43; a gas storage chamber 44; a top rod 45; a push block 46; fire-resistant particles 47; a pellet outlet 48; a reset assembly 49; a support tube 491; a tie rod 492; a return spring 493 and a limit block 494; a seal ring 495; a protective frame 5; an annular plate 51; a support shaft 52; a support plate 53; a filler 6; a flame retardant 7; a reinforcement assembly 8; a limit ring cylinder 81; a fixed collar 82; a steel wire 83.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: a multi-strand independent wire cable comprises a multi-strand cable core 1 and an outer sheath 2, wherein an insulating layer inner sheath 3 is sleeved on the outer side of the multi-strand cable core 1, the insulating layer inner sheath 3 protects the cable core 1 and prevents the cable from being in contact with electricity to cause safety problems to workers, flame retardant components 4 with the functions of heating and spraying materials are arranged inside the insulating layer inner sheath 3, the flame retardant components 4 can be arranged inside the insulating layer inner sheath 3 in an injection molding mode, the process method is not repeated, the flame retardant components 4 are provided with a plurality of groups, the flame retardant components 4 are distributed along the axial direction of the insulating layer inner sheath 3, each group is provided with a plurality of groups, the flame retardant components 4 are distributed circumferentially along the inside of the insulating layer inner sheath 3, the flame retardant components 4 are arranged in a plurality of groups, when a joint of the cable core 1 is ignited, the joint of the cable is cut, and the next normal use is convenient to ensure, a plurality of settings of fire-retardant component 4 are favorable to reaching the effect of fully putting out a fire when starting a fire to the joint of cable core 1.

The flame-retardant component 4 comprises an air guide cavity 41, a limiting cavity 42, an air bag 43, an air storage cavity 44, a mandril 45, a push block 46, fireproof particles 47, a particle outlet hole 48 and a reset component 49, wherein one end of the air guide cavity 41 is communicated with the outside, the other end of the air guide cavity is communicated with the limiting cavity 42, waterproof films 411 are arranged at openings of the air guide cavity 41 and the particle outlet hole 48 respectively, the waterproof films 411 ensure that water cannot enter the air guide cavity 41 at a cable joint, so that the flame-retardant component 4 is protected, meanwhile, the waterproof films 411 are easy to fall off when encountering high temperature, the flame-retardant component 4 is convenient to operate, the air storage cavity 44 is connected with the air bag 43 through a fixing ring, the air bag 43 is positioned in the limiting cavity 42, a guide groove is formed in one side of the limiting cavity 42, the mandril 45 is movably inserted in the guide groove, the guide groove has a guiding effect on the mandril 45, the mandril 45 is prevented from moving, a storage groove is formed between the particle outlet hole 48 and the guide groove, the fireproof particles 47 are stored in the random groove, the length of the ejector rod 45 is greater than the sum of the lengths of the guide groove and the storage groove, one end of the ejector rod 45 is connected with a push block 46, one end of the ejector rod 45 is in contact with the air bag 43, a plurality of the grain outlet holes 48 are arranged, the grain outlet holes 48 are obliquely distributed towards the cable core 1, the limiting cavity 42 is of an oval structure, the air bag 43 can be conveniently heated to transversely expand, the ejector rod 45 generates certain displacement movement, the push block 46 can be driven to move from one side of the storage groove to the other side, when the joint of the cable core 1 is ignited, heat generated in a short time is diffused to the inner sheath 3 of the insulating layer, the waterproof film 411 falls off, at the moment, the heat is diffused to the inner sheath 3 of the insulating layer through the air guide cavity 41, so that gas in the air storage cavity 44 expands, the air bag 43 deforms and expands in the limiting cavity 42, the ejector rod 45 and the push block 46 are pushed to move towards the grain outlet holes 48, and fireproof particles 47 in the storage groove are sprayed to the joint where the fire occurs through the grain outlet holes 48, achieving the effect of fire extinguishing.

One side of the push block 46 is located inside the storage groove and is provided with a reset assembly 49, the reset assembly 49 comprises a support pipe 491, a pull rod 492, a reset spring 493 and a limit block 494, the support pipe 491 is fixed on one side of the storage groove, the pull rod 492 is fixed on one side of the push block 46, a limit groove is formed inside the support pipe 491, the limit block 494 is connected on one end of the pull rod 492 in a sliding manner and is in an annular groove structure, the limit block 494 is convenient to guide and slide, the limit block 494 enables the pull rod 492 to move in a guiding and limiting effect, the reset spring 493 is fixedly connected between the limit block 494 and the support pipe 491, when the push block 46 moves from one side of the storage groove to the other side of the storage groove, the reset spring 493 is compressed, the pull rod 492 can be completely accommodated in the support pipe 491, so that the fireproof particles 47 in the storage groove can be fully ejected, and a sealing ring 495 is adhered to an opening of the support pipe 491, the sealing ring 495 prevents the fire-proof particles 47 from entering the supporting tube 491 by the relative movement between the supporting tube 491 and the pulling rod 492, which affects the working effect of the reset assembly 49, the inner sheaths 3 of the insulating layers are provided in plurality, the inner sheaths 3 of the insulating layers are distributed circumferentially around the outer sheath 2, when the push rod 45 and the push block 46 move towards the particle outlet hole 48, the reset spring 493 is compressed, the pulling rod 492 moves towards the supporting tube 491, when the temperature changes, the elastic deformation of the reset spring 493 urges the push block 46 to move towards the direction far away from the particle outlet hole 48, so that the fire-proof particles 47 in the storage groove can be fully sprayed out by further stored force, and the effect of fully extinguishing the fire is achieved.

The protective frame 5 is arranged on the outer sides of the insulating layer inner sheaths 3, the protective frame 5 is composed of an annular plate 51, a supporting shaft 52 and a plurality of supporting plates 53, the shape of the protective frame 5 is favorable for ensuring the stability of a cable, the practicability of the device is improved, the supporting plates 53 are bonded between the annular plate 51 and the supporting shaft 52, the protective frame 5 has a certain flexible structure and ensures the toughness of the cable, the supporting plates 53 are distributed circumferentially around the supporting shaft 52 and are distributed with the insulating layer inner sheaths 3 in a staggered manner, the protective frame 5 is favorable for independent work of multi-strand cables and do not interfere with each other, a filler 6 is filled between the protective frame 5 and the insulating layer inner sheaths 3, the filler 6 can be a polypropylene tape and is prevented from being torn and has certain toughness, the filler 6 limits the positions of the insulating layer inner sheaths 3, a flame retardant 7 is arranged inside the outer sheaths 2, and a reinforcing component 8 is arranged between the outer sheaths 2 and the protective frame 5 and outside of the flame retardant 7, the reinforcing component 8 comprises a limiting ring cylinder 81, a plurality of fixing lantern rings 82 and steel wires 83, the flame retardant 7 is positioned inside the limiting ring cylinder 81, the outer side and the inner side of the limiting ring cylinder 81 are both bonded with the fixing lantern rings 82, the fixing lantern rings 82 positioned on the inner side of the limiting ring cylinder 81 are inserted in the annular plate 51, the fixing lantern rings 82 are arranged in a plurality, the fixing lantern rings 82 are distributed along the outer side of the limiting ring cylinder 81 in a circumferential manner, the steel wires 83 are inserted in the fixing lantern rings 82, the strength of the outer sheath 2 is increased due to the arrangement of the steel wires 83, the steel wires 83 are limited through the fixing lantern rings 82, meanwhile, the fixing lantern rings 82 positioned on the inner side of the limiting ring cylinder 81 are inserted in the annular plate 51, so that the connection between the protective frame 5 and the outer sheath 2 is more stable, the outer sheath 2 is prevented from being easily disconnected when the cable is pulled, meanwhile, the reinforcing component 8 protects the position of the flame retardant 7 on the outer sheath 2 when the cable core joint is on fire, further has the effect of extinguishing fire.

The working principle is as follows: in practical use, when the joint of the cable is on fire, heat generated in a short time is diffused to the inner sheath 3 of the insulating layer, so that the waterproof membrane 411 falls off, at the moment, the heat is diffused to the inner sheath 3 of the insulating layer through the air guide cavity 41, so that gas in the air storage cavity 44 is heated to expand, the air bag 43 deforms and expands in the limiting cavity 42, the ejector rod 45 and the push block 46 are pushed to move towards the grain outlet hole 48, so that the fireproof particles 47 in the storage groove are sprayed to the joint of the fire through the grain outlet hole 48, a fire extinguishing effect is achieved, when the ejector rod 45 and the push block 46 move towards the grain outlet hole 48, the return spring 493 is compressed, the pull rod 492 moves towards the support tube 491, when the temperature changes, the elastic deformation of the return spring 493 prompts the push block 46 to move towards the direction far away from the grain outlet hole 48, so that the fireproof particles 47 in the storage groove can be fully sprayed by further force, reach the effect of abundant fire extinguishing, the setting of steel wire 83 has increased the intensity of oversheath 2 in addition, it is spacing to carry out steel wire 83 through fixed lantern ring 82, the inboard fixed lantern ring 82 of spacing ring section of thick bamboo 81 is pegged graft on annular plate 51 simultaneously, make the connection of protection frame 5 and oversheath 2 more stable, prevent oversheath 2 easy disconnection when dragging the cable, strengthen subassembly 8 spacing to fire retardant 7 position simultaneously, fire retardant 7 prevents the burning of intensity of a fire when the cable core connects the fire, and then the protection of outer sheath 2, further play the effect of putting out a fire, the multiunit setting of fire retardant component 4, when the joint of cable core 1 is fired, through the joint department of cutting cable, be convenient for guarantee next normal use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.