CN205881534U - Cable for coal mine - Google Patents

Abstract

The utility model discloses a cable for coal mine relates to cable technical field to solve the technical problem that the colliery is moisture resistance with signal communication cable and fire behaviour is relatively poor, life short, the regular transmission of signal receives the influence easily under the mine among the prior art. The utility model provides a cable for coal mine, include: cable core, protective layer and fire -retardant layer, protective layer are including waterproof reduced pressure layer, and the protective layer cladding is in the outside of cable core, and fire -retardant layer cladding is in the outside of protective layer, and fire -retardant layer surface is provided with wear -resisting arch, and wear -resisting protruding intussuseption is filled with magnesium hydroxide. The utility model discloses signal transmission under the mainly used mine, it has better wear -resisting, moisture resistance and fire -retardant characteristic, also can ensure the regular transmission of signal in the mine under humid tropical's the operational environment, makes to pass through between instrument that ore deposit borehole operation personnel used and the ground indicating instrument the utility model discloses can better ground transmitting data signal to the work under the mine of ensureing can be develoied betterly.

Description

Coal mine cable

Technical field

This utility model relates to field of cable technology, especially relates to a kind of coal mine cable.

Background technology

At present, along with the development of science and technology, the demand of cable is also got more and more by people, and cable is a kind of common number According to signal transmission apparatus, have that message capacity is big, transmission stability is high and the advantage such as security performance is good.

What existing communication cable was more is to use under the environment such as indoor and outdoor, but, for some coal mining enterprises For, its working environment is below earth's surface, is led to by signal between instrument and ground indicating instrument that operating personnel is used Communication cable is connected, and signal communication cable needs could be connected with ground indicating instrument by instrument through mine, by communication Both are connected to reach can effectively pass between instrument and the ground indicating instrument that ore deposit underground operators is used by cable The purpose of transmission of data signal, so that it is guaranteed that ore deposit underground work can be smoothed out.

But, the feelings of the less stable of the most severe for the working environment under mine, hot and humid and electric power system Condition, the poor-performing that coal mining signal communication cable of the prior art is moisture resistance, fire-retardant, it is more difficult to adapt to the work under this mine Environment, the normal transmission of signal is also easily subject to impact；Further, due to job demand, cable needs often to be pulled, cable with Ground rubs so that cable sheath is easily worn for a long time so that the service life of cable shortens, and the most how to provide one to have The most wear-resisting, moisture resistance and fire-retardant characteristic and ensure that the coal mine cable of normal transmission of signal becomes this area skill Art personnel need badly and solve the technical problem that.

Utility model content

The purpose of this utility model is to provide a kind of coal mine cable, logical to solve coal mining signal of the prior art The problem that communication cable is moisture resistance and fire resistance is poor, service life is short, be easily subject to impact in the normal transmission of ore deposit underground signal.

This utility model provides a kind of coal mine cable, including: cable core, protective layer and flame-retardant layer, described protective layer includes Having waterproof decompression layer, described protective layer is coated on the outside of described cable core, and described flame-retardant layer is coated on the outside of described protective layer, Described flame-retardant layer outer surface is provided with wear-resisting projection, is filled with magnesium hydroxide in described wear-resisting projection.

Wherein, it is filled with filler between described waterproof decompression layer and described cable core.

Specifically, described filler is waterproofing rope and acrylic resin.

Wherein, described protective layer also includes screen layer and outer jacket, and described screen layer is coated on described waterproof decompression layer Outside, described outer jacket is coated on the outside of described screen layer, and described screen layer is proof copper-wire braided screen layer or copper is moulded multiple Crossed belt screen layer, described outer jacket is that PET is made.

Specifically, one or both during described flame-retardant layer is flame-proof polyvinyl chloride or flame-retardant chloroprene rubber are made.

Preferably, described cable core includes a central transmission wire and Duo Gen peripheral transport wire；Described central transmission is led Line is positioned at the center of coal mine cable, and described peripheral transport conductor loop around described central transmission wire and passes at described center The surrounding of transporting line is uniformly distributed.

Further, described central transmission wire and described peripheral transport wire all include a power line and a signal Line, described power line and the mutual stranded bunchy of described holding wire and composition twisted-pair feeder, described central transmission wire and described periphery The mutual stranded bunchy of transfer wire, constitutes the cable core of described coal mine cable.

Further, described central transmission wire is all coated with insulating barrier with the periphery of described peripheral transport wire.

Preferably, described insulating barrier is that linear low density polyethylene is made.

Preferably, the core in described power line and described holding wire is copper stranded conductor or tinned wird is made.

The coal mine cable that this utility model provides, by the peripheral cladding protective layer at cable core, can be effectively prevented The external magnetic field interference to this utility model transmission signal；The waterproof decompression layer of protective layer can be used in preventing the steam under mine Invade the inside of coal mine cable, avoid causing the internal short-circuit of cable；The flame-retardant layer being coated on protective layer peripheral can be used The situation of cable fire is caused because of high temperature or short circuit in avoiding coal mine cable；By arranging abrasion resistant convex at flame-retardant layer outer surface Rise, can be when pulling cable, the wear-resisting projection making flame-retardant layer outer surface arrange is first subjected to wear and tear, and electricity of avoiding directly wearing and tearing The flame-retardant layer of cable, so that it is guaranteed that cable has longer service life；And it is filled with magnesium hydroxide, hydroxide in wear-resisting projection Magnesium is a kind of novel filled-type fire retardant, can discharge and combine water, absorb substantial amounts of latent heat, reduce it during its decomposes The material filled surface temperature in flame, has suppression polymer and decomposes and cool down produced fuel gas Effect, and the magnesium oxide decomposing generation is good refractory material, can help to improve the fire-resistance of the material that it is filled Performance, the steam simultaneously discharged can be as a kind of smoke suppressant, therefore, fills magnesium hydroxide and can enter in abrasionproof projection One step improves flame retardant effect and the smoke suppressing effect of coal mine cable.

The most compared with prior art, this utility model has the most wear-resisting, moisture resistance and fire-retardant characteristic, in mine Can also ensure that the normal transmission of signal under hot and humid working environment, make instrument and ground that ore deposit underground operators used Data signal can be preferably transmitted, so that it is guaranteed that the work under mine can be more by this utility model between the indicating instrument of face Carry out well.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, below by right In detailed description of the invention or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

The structural representation of the coal mine cable that Fig. 1 provides for this utility model embodiment；

The structural representation of the coal mine cable that Fig. 2 provides for another embodiment of this utility model.

Reference:

1-cable core；11-central transmission wire；12-peripheral transport wire；121-power line；122-holding wire；123-insulate Layer；2-protective layer；21-waterproof decompression layer；22-screen layer；23-outer jacket；3-flame-retardant layer；The wear-resisting projection of 31-.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality Novel protected scope.

In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term Directly ", orientation or the position relationship of the instruction such as " level ", " interior ", " outward ", "front", "rear" is based on orientation shown in the drawings or position Put relation, be for only for ease of and describe this utility model and simplify description rather than instruction or the device of hint indication or element Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.This Outward, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicate or hint relative importance.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Language concrete meaning in this utility model.

The structural representation of the coal mine cable that Fig. 1 provides for this utility model embodiment；Fig. 2 be this utility model another The structural representation of the coal mine cable that embodiment provides.

As depicted in figs. 1 and 2, the coal mine cable that this utility model embodiment provides, including: cable core 1, protective layer 2 and Flame-retardant layer 3, protective layer 2 includes waterproof decompression layer 21, and protective layer 2 is coated on the outside of cable core 1, and flame-retardant layer 3 is coated on protection The outside of layer 2, flame-retardant layer 3 outer surface is provided with wear-resisting protruding 31, is filled with magnesium hydroxide in wear-resisting protruding 31.

The coal mine cable that this utility model provides, by the peripheral cladding protective layer 2 at cable core 1, can prevent effectively Only the transmission of this utility model signal is interfered by external magnetic field；The waterproof decompression layer 21 of protective layer 2 is crosslinked polyethylene system Becoming, the steam that waterproof decompression layer 21 can be effectively prevented under mine invades the inside of coal mine cable, avoids causing colliery With the internal short-circuit of cable；Flame-retardant layer 3 can be used in avoiding coal mine cable to cause the situation of cable fire because of high temperature or short circuit； By arranging wear-resisting protruding 31 at flame-retardant layer 3 outer surface, can be when pulling cable, make that flame-retardant layer 3 outer surface arranges is wear-resisting Protruding 31 are first subjected to abrasion, and the flame-retardant layer 3 of cable of avoiding directly wearing and tearing, so that it is guaranteed that cable has the longer use longevity Life；And being filled with magnesium hydroxide in wear-resisting protruding 31, magnesium hydroxide is a kind of novel filled-type fire retardant, passes through decomposes Time can discharge and combine water, absorb substantial amounts of latent heat, reduce material that it the is filled surface temperature in flame, have The effect that suppression polymer decomposes and cools down produced fuel gas, and the magnesium oxide decomposing generation is good Refractory material, can help to improve the fire resistance of the material that it is filled, and the steam simultaneously discharged can be as one Smoke suppressant, therefore, fills magnesium hydroxide in abrasionproof protruding 31, can improve the flame retardant effect of coal mine cable further and press down Cigarette effect.

The most compared with prior art, this utility model has the most wear-resisting, moisture resistance and fire-retardant characteristic, in mine Can also ensure that the normal transmission of signal under hot and humid working environment, make instrument and ground that ore deposit underground operators used Data signal can be preferably transmitted, so that it is guaranteed that the work under mine can be more by this utility model between the indicating instrument of face Carry out well.

Wherein, in order to ensure the stability of this utility model internal structure, and prevent the steam under mine from invading further Enter the inside to coal mine cable, avoid causing the internal short-circuit of cable so that this utility model can be made operating personnel Instrument and ground indicating instrument between transmit data signal in high quality, to guarantee that the work under mine can be opened smoothly Exhibition, in the coal mine cable that this utility model embodiment provides, as depicted in figs. 1 and 2, above-mentioned waterproof decompression layer 21 and cable core 1 Between be filled with filler.

By filling filler between waterproof decompression layer 21 and cable core 1, can improve between waterproof decompression layer 21 and cable core 1 Seal, it is to avoid there is space between protective layer 2 and cable core 1, thus ensureing coal mine cable internal structure stability Meanwhile, can prevent steam from invading the inside of coal mine cable further, it is to avoid to cause the internal short-circuit of cable, and then make ore deposit Data signal can be transmitted in high quality, to guarantee under mine between instrument and the ground indicating instrument of downhole operations librarian use Work can preferably carry out.

Specifically, while making coal mine cable prevent steam from invading its internal characteristic with can having high-quality, Bending durability and the reelability of cable, and then the environmental suitability of raising cable can be improved, make this utility model suitableeer Conjunction mine operation uses, and in the coal mine cable that this utility model embodiment provides, above-mentioned filler can be waterproofing rope and poly-third Olefine resin.

Waterproofing rope is the internal conventional moistureproof packing material of cable, fills and block water between waterproof decompression layer 21 and cable core 1 Rope can prevent steam under mine from invading the inside of coal mine cable further；Acrylic resin is filled in cable core 1 with waterproof Between decompression layer 21, the space between cable core 1 and waterproof decompression layer 21 can be played the most airtight effect, thus ensure this The stability of utility model internal structure, and be effectively prevented under mine steam and invade inside it, it is to avoid cause the interior of cable Portion's short circuit；And acrylic resin has flexibility, i.e. packing material has the character being easily deformed than cable core 1, uses in colliery During cable bend, implant is oppressed by insulated core 1, makes the outer margin deformation of implant, so that coal mine cable has preferably Ground bending durability and reelability, coal mine cable can use in the environment of alternating bending, and then improve colliery electricity consumption The environmental suitability of cable so that it is in being more suitable for mine, operation uses.

When actual production manufactures, when using under mine in order to ensure coal mine cable, ore deposit underground operators is used Instrument and ground indicating instrument between can preferably transmit data signal, the colliery electricity consumption that this utility model embodiment provides In cable, as depicted in figs. 1 and 2, protective layer 2 also includes screen layer 22 and outer jacket 23, and screen layer 22 is coated on waterproof decompression The outside of layer 21, outer jacket 23 is coated on the outside of screen layer 22, and screen layer 22 is moulded compound for proof copper-wire braided screen layer or copper Band screen layer, outer jacket 23 is made for PET.

Proof copper-wire braided screen layer or compound copper-plastics band screen layer are respectively provided with preferably shield effectiveness, can be effectively prevented External magnetic field disturbs the transmission of this utility model internal signal, it is of course also possible to use proof copper-wire braided screen layer and copper to mould simultaneously Composite band screen layer is as the screen layer 22 of coal mine cable, to reach preferably to resist external magnetic field to this utility model inside The purpose of signal transmission interference, such that it is able to guarantee this utility model stability in ore deposit downhole transmitted data signal, makes mine Data signal is transmitted in high quality, it is ensured that transmission image is clear between instrument and ground indicating instrument that lower operating personnel is used Clear, make ore deposit underground work to carry out smoothly；PET is poly terephthalic acid class plastics, mainly includes poly terephthalic acid second two Ester and polybutylene terephthalate, PET has preferably high-temperature stability and weatherability, and outer jacket 23 uses PET system Become, the resistance to elevated temperatures of coal mine cable can be improved further, make this utility model preferably hot and humid under mine Under environment, operation uses.

Preferably, can have the flame-retarding characteristic of high-quality in order to ensure coal mine cable, it is to avoid this utility model because of high temperature or Short circuit causes the situation that circuit burns so that it is the operation being applicable under mine under hot environment uses, so that it is guaranteed that make under mine Industry is more safe and reliable, and in the coal mine cable that this utility model embodiment provides, flame-retardant layer 3 can be flame-proof polyvinyl chloride Or one or both in flame-retardant chloroprene rubber make.

Polrvinyl chloride and neoprene are respectively provided with advantage fire-retardant, that chemical proofing is high, mechanical strength properties is good, logical Flame-retardant layer 3 made by the one or two kinds of material crossed in polrvinyl chloride or neoprene, and colliery cable can be made to have well Flame-retarding characteristic, it is to avoid coal mine cable causes the situation that circuit burns to occur because of high temperature or short circuit, so that coal mine cable It is more suitable in mine operation under hot environment to use, to guarantee the safety and reliability of ore deposit underground work.

In order to make coal mine cable can between instrument and the ground indicating instrument that ore deposit underground operators is used high Quality ground transmission data signal so that ore deposit underground work can preferably be carried out, and the colliery that this utility model embodiment provides is used In cable, as it is shown in figure 1, cable core 1 includes a central transmission wire 11 and Duo Gen peripheral transport wire 12；Central transmission wire 11 centers being positioned at coal mine cable, peripheral transport wire 12 is around central transmission wire 11 and at central transmission wire 11 Surrounding be uniformly distributed.

It is so designed that, peripheral transport wire 12 is evenly distributed on central transmission wire 11 around, it can be ensured that colliery Use the stability transmitting data signal between instrument and ground indicating instrument with cable operating personnel, and can produce The cylindric cable of regular shape, it can be ensured that this utility model good looking appearance, and ensure comfortableness when it is gripped by workman, Thus the work under ensureing mine can smoothly, carry out efficiently.

When actual production manufactures, stably can use instrument operating personnel in use in order to ensure coal mine cable And transmit data signal between the indicating instrument of ground, it is ensured that coal mine cable can normally work, and this utility model embodiment carries In the coal mine cable of confession, as it is shown in figure 1, central transmission wire 11 and peripheral transport wire 12 all include a power line 121 With a holding wire 122, power line 121 and the mutual stranded bunchy of holding wire 122 and composition twisted-pair feeder.

Power line 121 and the mutual stranded bunchy of holding wire 122 and composition twisted-pair feeder, use this manufacture, not only may be used To resist the interference that this utility model is produced by a part from extraneous electromagnetic wave, it is also possible to reduce the phase between many twisted pair wires Interference mutually, so that it is guaranteed that coal mine cable uses operating personnel transmits the steady of data signal between instrument and ground indicating instrument Qualitative, and then ensure under mine that everything goes well with your work and carry out.

When actual production manufactures, instrument and ground indicating instrument can be used operating personnel in order to ensure coal mine cable Between normally transmit data signal, in the coal mine cable that this utility model embodiment provides, as depicted in figs. 1 and 2, center Transfer wire 11 is all coated with insulating barrier 123 with the periphery of peripheral transport wire 12.

By wrapping respectively with holding wire 122 periphery at the power line 121 of central transmission wire 11 with peripheral transport wire 12 It is covered with insulating barrier 123, makes central transmission wire 11 can work alone with peripheral transport wire 12, it is to avoid to cause internal short-circuit, So that it is guaranteed that coal mine cable stably can transmit between instrument and the ground indicating instrument that ore deposit underground operators uses Data signal, makes coal mine cable can preferably play the function being transmitted signal.

Specifically, in order to preferably guarantee that central transmission wire 11 can work alone with peripheral transport wire 12, it is to avoid Causing internal short-circuit, it is ensured that the safety and reliability during the use of coal mine cable, this utility model embodiment provides In coal mine cable, insulating barrier 123 can be that linear low density polyethylene is made.

Linear low density polyethylene is not only good insulant, and it has that intensity is big, good toughness, rigidity are big, The advantage such as heat-resisting, cold-resistant, therefore, linear low density polyethylene is widely used as the insulating barrier 123 of cable, uses linea low density Insulating barrier 123 made by polyethylene, it can be ensured that insulate well between central transmission wire 11 and peripheral transport wire 12, in making Heart transfer wire 11 can work alone with peripheral transport wire 12, it is to avoid causes the internal short-circuit of cable.

Preferably, in order to ensure coal mine cable can ore deposit underground operators use instrument and ground indicating instrument it Between normally transmit data signal, in the coal mine cable that this utility model embodiment provides, as it is shown in figure 1, power line 121 He Core in holding wire 122 is copper stranded conductor or tinned wird is made.

The electric conductivity of copper is the highest, is therefore widely used in the cable core 1 making cable by people.The cable core 1 of coal mine cable Manufacture method: first, is drawn into the first bronze medal monofilament and the second bronze medal monofilament by copper；Secondly, by the first bronze medal monofilament and the second bronze medal monofilament Make annealing treatment respectively；Again, 12 first bronze medal filament tows are twisted into the first conductor, by 48 second bronze medal filament tows It is twisted into the second conductor；On the first conductor, form insulating barrier by extrusion moulding, and after high-power electron beam, prepare power supply Line 121, forms insulating barrier by extrusion moulding on the second conductor, and after high-power electron beam, prepares holding wire 122； Finally, by a prepared power line 121 and a holding wire 122 to being twisted into a twisted-pair feeder, and wrap in this twisted-pair feeder periphery Cover the insulating barrier 123 being made up of linear low density polyethylene.

Use copper stranded conductor or tinned wird as power line 121 and the core of holding wire 122, can preferably realize coal Mine cable carries out the purpose of stable transmission to data signal, so that it is guaranteed that the work under mine can be carried out smoothly.

Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of type each embodiment technical scheme.

Claims (10)

1. a coal mine cable, it is characterised in that including: cable core, protective layer and flame-retardant layer, described protective layer includes waterproof Decompression layer, described protective layer is coated on the outside of described cable core, and described flame-retardant layer is coated on the outside of described protective layer, described resistance Combustion layer outer surface is provided with wear-resisting projection, is filled with magnesium hydroxide in described wear-resisting projection.

Coal mine cable the most according to claim 1, it is characterised in that: fill out between described waterproof decompression layer and described cable core It is filled with filler.

Coal mine cable the most according to claim 2, it is characterised in that: described filler is waterproofing rope and acrylic resin.

Coal mine cable the most according to claim 1, it is characterised in that: described protective layer also includes screen layer and protects outward Layer, described screen layer is coated on the outside of described waterproof decompression layer, and described outer jacket is coated on the outside of described screen layer, described Screen layer is proof copper-wire braided screen layer or compound copper-plastics band screen layer, and described outer jacket is that PET is made.

Coal mine cable the most according to claim 1, it is characterised in that: described flame-retardant layer is flame-proof polyvinyl chloride or fire-retardant One or both in neoprene are made.

Coal mine cable the most according to claim 1, it is characterised in that: described cable core include a central transmission wire and Many peripheral transport wires；Described central transmission wire is positioned at the center of coal mine cable, described peripheral transport conductor loop around Described central transmission wire and being uniformly distributed around described central transmission wire.

Coal mine cable the most according to claim 6, it is characterised in that: described central transmission wire and described peripheral transport Wire all includes a power line and a holding wire, described power line and the mutual stranded bunchy of described holding wire and composition multiple twin Line, described central transmission wire and the mutual stranded bunchy of described peripheral transport wire, constitute the cable core of described coal mine cable.

Coal mine cable the most according to claim 7, it is characterised in that: described central transmission wire and described peripheral transport The periphery of wire is all coated with insulating barrier.

Coal mine cable the most according to claim 8, it is characterised in that: described insulating barrier is linear low density polyethylene system Become.

10. according to the coal mine cable described in claim 7-9 any one, it is characterised in that: described power line and described letter Core in number line is copper stranded conductor or tinned wird is made.