CN204884660U

CN204884660U - Mining power cable of light -duty low smoke and zero halogen protection against rodents

Info

Publication number: CN204884660U
Application number: CN201520590658.2U
Authority: CN
Inventors: 肖颖; 秦建伟; 张海吉; 冯亮
Original assignee: Jiangsu Zhongmei Cable Co Ltd
Current assignee: Jiangsu Zhongmei Cable Co Ltd
Priority date: 2015-08-07
Filing date: 2015-08-07
Publication date: 2015-12-16
Anticipated expiration: 2025-08-07

Abstract

The utility model discloses a mining power cable of light -duty low smoke and zero halogen protection against rodents, including a cable core, the cable core be by three power core and one ground heart yearn side by side the transposition form, the department is equipped with the filler that blocks water in the space of cable core, and around the thin round high strength steel silk layer that 0.45mm is thick that the package one deck is inseparable outside the cable core, around wrapping the yarn outside thin circle high strength steel silk layer, sheath in the crowded package outside pricking the yarn, interior sheath are outward around the package galvanized steel strip, and be last at outmost crowded packet of fire -retardant sheath of EVA low smoke and zero halogen of cable core again. The utility model discloses a two -layer protection against rodents structure for the cable is the protection against rodents more, and the tensile strength who puts the cable has in addition obtained the improvement, and in addition also reduces the cost of gopher protected cable when improving the protection against rodents performance, and the installation of being convenient for.

Description

A kind of light-duty low smoke and zero halogen protection against rodents mining power cable

Technical field

The utility model relates to field of cable technology, particularly relates to a kind of light-duty low smoke and zero halogen protection against rodents mining power cable.

Background technology

Mining cable is used in mine, and owing to there being a large amount of mouse to haunt in mine, the front tooth of mouse is flourishing especially; and do not change production; there is the object that bites to keep the habit of its wind-force tooth, there is the very strong ability that bites, often can find the situation that ore deposit cable is bitten broken by muroid.In order to ensure that cable can biting from mouse, mainly at present two kinds of technical schemes are adopted to solve:

One, chemistry protocols

Be merely able to add expelling mouse agent at sheath material, drive agent and mainly contain high third body of synthesis and synthesis pungent element.Add in polyethylene sheathing material by a certain proportion of expelling mouse agent, when mouse bites this sheath material, the mucous membrane of mouth of muroid and gustatory nerve are subject to intense stimulus and detest and reject chewing.

Two, physical schemes

At the outer wrapped steel band of the cable core of cable or glass fibre, its principle is that to adopt steel-tape armouring that muroid can be made to sting motionless, or slows down the speed will breaking cable, adopt glass fibre be because mouse bite glass fibre after oral cavity feel bad, no longer continue.

Prior art has certain anti-rat, mainly there is the shortcoming of the following aspects:

Chemistry protocols is adopted to mainly contain the deficiency of two aspects: first, material containing pungent element is adding can volatilize man-hour a large amount of pungent gas and white cigarette, can damage to operating personnel's breathing and eyes on the one hand, secondly, the easily volatilization of pungent element, through long-term use, pungent element can run off gradually in sheath material, thus loses the characteristic of protection against rodents.

Adopt the weak point of physical schemes, the problem of steel-tape armouring protection against rodents is utilized to be, steel band is once after being wanted by mouse, bite mark is exposed in outside air, because down-hole mostly is wet environment, steel band mostly is galvanized steel strip, in wet environment, this steel band be snapped can accelerate to get rusty, corrode, thus loses the ability of protection against rodents.Utilize the mode of glass fibre protection against rodents, because glass fibre is very thin, and also very crisp, cost is higher in addition, can not use on a large scale.

Utility model content

The utility model is in order to solve the problem of prior art, provide a kind of light-duty low smoke and zero halogen protection against rodents mining power cable, have employed two-layer protection against rodents structure, make cable protection against rodents more, and the tensile strength of some cable is improved, in addition, while improving rodent-proof characteristic, also reduce the cost of rodent-resistant cable, and be convenient to mounting and installation.

One described in the utility model light-duty low smoke and zero halogen protection against rodents mining power cable, comprises cable core, and described cable core is that heart yearn is stranded side by side forms by three power wire core and a ground; The filler that blocks water is provided with in the gap of cable core, at the outer wrapped one deck thin round high-tensile steel wires layer that 0.45mm is thick closely of cable core, again at the outer wrapped bundle yarn of thin circle high-tensile steel wires layer, sheath is extruded outside bundle yarn, the outer wrapped galvanized steel strip of sheath, finally extrudes EVA low-smoke halogen-free flame-retardant sheath at cable core outermost layer.

Further improvement, described power wire core by copper conductor, be extruded in second third insulating barrier outside copper conductor and wrapped semi-conductive cloth tape outside second third insulating barrier is formed.

Further improvement, described ground heart yearn is made up of ground cored wire conductor and the semi-conductive layer be extruded in outside ground cored wire conductor.

Compared with prior art, the utility model beneficial effect is:

1, be surrounded with one deck 0.45mm carefully round high-tensile steel wires closely at the skin of cable conductor, finer wire is not only cable and provides necessary pulling force and side pressure ability, can resist biting of muroid simultaneously; Prick yarn by fixing for finer wire binding in finer wire external application, effectively stop steel wire generation booster phenomenon.And then outside steel wire, extruding one deck inner sheath, inner sheath can improve the anti-collapse ability of cable, also can ensure that muroid is after outer layer steel belt of breaking by the teeth, keeps the stability of cable; And the outer wrapped one deck galvanized steel strip of the inner sheath of cable, galvanized steel strip has certain moisture-proof role, also has the effect that protection against rodents bites; The utility model mainly have employed above two-layer protective layer, can effectively make muroid bite cable time cable damage is dropped to minimum, and galvanized steel strip and finer wire cost more cheap than glass fiber, be applicable to produce in enormous quantities.

2, low-smoke non-halogen flame-retardant performance:

The sheath that the utility model uses is made as base-material for EVA elastomeric material, has the function of low-smoke non-halogen flame-retardant, is particularly suitable for using in down-hole.

3, longitudinal water-blocking performance:

Filler inside and outside cable conductor is waterproofing compound, can ensure the performance of the longitudinal water-blocking of cable.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

The light-duty low smoke and zero halogen protection against rodents of one as shown in Figure 1 mining power cable, comprises cable core, and described cable core is that heart yearn is stranded side by side forms by three power wire core and a ground; The filler 4 that blocks water is provided with in the gap of cable core, at the outer wrapped one deck thin round high-tensile steel wires layer 7 that 0.45mm is thick closely of cable core, again at the outer wrapped bundle yarn 8 of thin circle high-tensile steel wires layer 7, sheath 9 is extruded outside bundle yarn 8, the outer wrapped galvanized steel strip 10 of sheath 9, finally extrudes EVA low-smoke halogen-free flame-retardant sheath 11 at cable core outermost layer; Wherein, thin circle high-tensile steel wires layer 7 is formed by many steel wire encirclings.

Described power wire core by copper conductor 1, be extruded in second third insulating barrier 2 outside copper conductor 1 and wrapped semi-conductive cloth tape 3 outside second third insulating barrier 2 is formed.

Described ground heart yearn is made up of ground cored wire conductor 5 and the semi-conductive layer 6 be extruded in outside ground cored wire conductor 6.

The utility model embody rule approach is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. a light-duty low smoke and zero halogen protection against rodents mining power cable, comprises cable core, it is characterized in that: described cable core is that heart yearn is stranded side by side forms by three power wire core and a ground; The filler that blocks water is provided with in the gap of cable core, at the outer wrapped one deck thin round high-tensile steel wires layer that 0.45mm is thick closely of cable core, again at the outer wrapped bundle yarn of thin circle high-tensile steel wires layer, sheath is extruded outside bundle yarn, the outer wrapped galvanized steel strip of sheath, finally extrudes EVA low-smoke halogen-free flame-retardant sheath at cable core outermost layer.

2. light-duty low smoke and zero halogen protection against rodents mining power cable according to claim 1, is characterized in that: described power wire core by copper conductor, be extruded in second third insulating barrier outside copper conductor and wrapped semi-conductive cloth tape outside second third insulating barrier is formed.

3. light-duty low smoke and zero halogen protection against rodents mining power cable according to claim 1, is characterized in that: described ground heart yearn is made up of ground cored wire conductor and the semi-conductive layer be extruded in outside ground cored wire conductor.