CN201036052Y

CN201036052Y - Shielding railway digital signal cables for preventing animal corrosion and bite

Info

Publication number: CN201036052Y
Application number: CNU2007200363231U
Authority: CN
Inventors: 王子纯; 吴荣美; 陈子洪; 周晚林; 邵秀芹; 陈彩云
Original assignee: Jiangsu Dongqiang Co Ltd
Current assignee: Jiangsu Dongqiang Co Ltd
Priority date: 2007-04-06
Filing date: 2007-04-06
Publication date: 2008-03-12
Anticipated expiration: 2017-04-06

Abstract

The utility model relates to a railway digital signal cable which can prevent corrosion and the bite of animals. The utility model comprises a cable core which comprises a plurality of groups of signal wires, and at least one group of the signal wire is an inner shielded four-star wire group. The outer side of the cable core is wrapped with a polyester strip layer, and the outer side of the polyester strip layer is orderly provided with an aluminium protecting sleeve layer, a metal sheathed layer and an anti-termite layer which is made of nylon plastic. The intensity of the anti-termite layer made of nylon plastic is relatively hard, so the damage of the cable caused by the corrosion and the bite of animals such as termites can be prevented. The cable is protected via the anti-termite layer without the insufflation of drugs. The character of environmental protection is very strong and the pollution of the environment can be avoided. Insufflation of drugs termly is not needed, and the use is more convenient.

Description

Anti-animal corrodes and the shielding railway digital signal cable of nibbling

Technical field

The utility model relates to a kind of shielding railway digital signal cable.

Background technology

In the prior art; internal screening railway digital signal cable generally includes cable core; be arranged at the aluminium jacket layer and the sheath layer in the cable core outside; and this internal screening railway digital signal cable is when being applied in the open air; regular meeting is subjected to the infringement of nibbling as animals such as termites; owing to can break by the teeth as termite sheath layer and aluminium covering; so the cable core of existing internal screening railway digital signal cable easily goes to pot; cause communication disruption; and have some cables to adopt bioanalysis at present; medical treatment prevents that termite from corroding; but this needs to safeguard termly; and can cause environmental pollution, be unfavorable for applying.

The utility model content

The purpose of this utility model provides a kind of anti-animal and corrodes and the railway digital signal cable of nibbling, and it need not periodic maintenance when practical application.

The technical solution of the utility model is: a kind of anti-animal corrodes and the railway digital signal cable of nibbling, comprise cable core, described cable core comprises many group holding wires, at least one group of described holding wire is inner shield four stars line group, the described cable core outside is surrounded by the polyester belt, the outside of described polyester belt is disposed with aluminium sheath layer, metal armouring layer, termite-proof layer, and described anti-animal corrodes and the layer of nibbling is the nylon plastic(s) material.

Be provided with first inner sheath between described aluminium sheath layer and the metal armouring layer, the described first inner sheath extrusion molding is bonded on the outer surface of aluminium sheath layer.

Extrusion molding is bonded with second inner sheath on the inner surface of described aluminium sheath layer.

Described metal armouring layer and anti-animal corrode and nibble and be provided with oversheath between the layer, and described oversheath extrusion molding is bonded on the outer surface of metal armouring layer.

Described inner shield four stars line group comprises four mutually stranded single lines, the longitudinal lapping plastic sheath layer on the metal screen layer in described four single lines outside, outer surface that extrusion molding is bonded in described metal screen layer.

The utility model compared with prior art has following advantage: the anti-animal erosion that the employing nylon plastic(s) is made and the intensity of the layer of nibbling are harder; can prevent to cause cable to be decreased ring owing to nibbling as animals such as termites; protect cable by the anti-animal erosion and the layer of nibbling; promptly need not spraying medicine; its feature of environmental protection is stronger; can avoid environmental pollution again, and need not spraying medicine termly, use more convenient.

Description of drawings

Accompanying drawing 1 is a main cutaway view of the present utility model;

Accompanying drawing 2 is the main cutaway view Amplified image of shielding four stars group of the present utility model;

Wherein: 1, anti-animal corrodes and the layer of nibbling; 2, oversheath; 3, metal armouring layer; 4, first inner sheath; 5, aluminium sheath layer; 6, second inner sheath; 7, polyester belt; 8, inner shield four stars line group; 9, plastic sheath layer; 10, single line; 11, polyester is pricked cotton yarn tape; 12, metal screen layer.

Embodiment

Shown in accompanying drawing 1, a kind of anti-animal corrodes and the railway digital signal cable of nibbling, and comprises cable core, and described cable core comprises many group holding wires, and at least one group of described holding wire is inner shield four stars line group 8.Shown in accompanying drawing 2, described inner shield four stars line group 8 comprises that four mutually stranded single lines 10, longitudinal lapping are bonded in the plastic sheath layer 9 on the outer surface of described metal screen layer 12 at metal screen layer 12, the extrusion molding in described four single line 10 outsides, four single line 10 stranded backs are pricked cotton yarn tape 11 with polyester and tightened, four single lines 10 that twist together constitute four stars line group, and promptly its longitudinal section is star.

The described cable core outside is surrounded by polyester belt 7, and the outside of described polyester belt 7 is disposed with aluminium sheath layer 5, metal armouring layer 3, anti-animal erosion and the layer 1 of nibbling, and described anti-animal corrodes and the layer 1 of nibbling is the nylon plastic(s) material.

Termite-proof layer 1 adopts nylon plastic(s) (a kind of engineering plastics of special use) material to make usually; its intensity is harder; wear-resisting anti-erosion; can prevent to cause cable destroyed, cable core is shielded as nibbling because of animals such as termites, intact when the practical application to ensure the shielding railway digital signal cable; prevent that transmission signals from interrupting; can improve the fail safe and the reliability of digital signal, analog signal transmission passage, and need not regularly to safeguard continually, use more convenient.

Be provided with first inner sheath 4 between described aluminium sheath layer 5 and the metal armouring layer 3, described first inner sheath, 4 extrusion moldings are bonded on the outer surface of aluminium sheath layer 5, and extrusion molding is bonded with second inner sheath 6 on the inner surface of described aluminium sheath layer 5.Described metal armouring layer 3 and anti-animal corrode and nibble and be provided with oversheath 2 between the layer 1, and described oversheath 2 extrusion moldings are bonded on the outer surface of metal armouring layer 3.First inner sheath 4, second inner sheath 6, oversheath 2 are plastic material, first inner sheath 4, second inner sheath 6 pass through the processing mode and 5 bonding connection of aluminium sheath layer of extrusion molding respectively, oversheath 2 also is bonded in 3 years outer surface of metal armouring layer by the processing mode of extrusion molding, oversheath 2 is bonding with the anti-animal erosion and the layer 1 of nibbling, and second inner sheath 6 is also bonding with polyester belt 7.Aluminium sheath layer 5 mainly plays shielding, protection against the tide and lateral pressure resistant effect; metal armouring layer 3 main rising increase platform mechanical strength and shielding action; the intensity of cable is combined and be can further improve to aluminium sheath layer 5 and metal armouring layer 3; to prevent that this cable from digging owing to the construction shovel or weight roll extrusion destruction causes cable core exposed; 4 insulation of first inner sheath between alibate 5 and the metal armouring layer 3 and buffer action; 6 pairs of cable cores of second inner sheath of aluminium sheath layer 5 inboard shield, and the insulation protection effect is played in 2 outsides at cable of the oversheath in metal armouring layer 3 outside.

Claims

1. an anti-animal corrodes and the railway digital signal cable of nibbling, and comprises cable core, and described cable core comprises many group holding wires, and at least one group of described holding wire is inner shield four stars line group (8), it is characterized in that; The described cable core outside is surrounded by polyester belt (7), and the outside of described polyester belt (7) is disposed with aluminium sheath layer (5), metal armouring layer (3), anti-animal erosion and the layer (1) of nibbling, and described termite-proof layer (1) is the nylon plastic(s) material.

2. anti-animal according to claim 1 corrodes and the railway digital signal cable of nibbling, it is characterized in that: be provided with first inner sheath (4) between described aluminium sheath layer (5) and the metal armouring layer (3), described first inner sheath (4) extrusion molding is bonded on the outer surface of aluminium sheath layer (5).

3. anti-animal according to claim 1 corrodes and the railway digital signal cable of nibbling, and it is characterized in that: extrusion molding is bonded with second inner sheath (6) on the inner surface of described aluminium sheath layer (5).

4. anti-animal according to claim 1 corrodes and the railway digital signal cable of nibbling, it is characterized in that: described metal armouring layer (3) and anti-animal corrode and nibble and be provided with oversheath (2) between the layer (1), and described oversheath (2) extrusion molding is bonded on the outer surface of metal armouring layer (3).

5. anti-animal according to claim 1 corrodes and the railway digital signal cable of nibbling, and it is characterized in that: described inner shield four stars line group (8) comprises mutually stranded four single lines (10), the longitudinal lapping plastic sheath layer (9) on the metal screen layer (12) in described four single lines (10) outside, outer surface that extrusion molding is bonded in described metal screen layer (12).