CN213935710U

CN213935710U - B1-grade high-flame-retardant control cable for rail transit

Info

Publication number: CN213935710U
Application number: CN202023010033.4U
Authority: CN
Inventors: 席娇娜; 吴士杰; 冯成; 张波; 张宏杰
Original assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Current assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-10
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a high flame retardant control cable of B1 level for track traffic provides the high flame retardant control cable of B1 level for track traffic, include the cable core that is formed by a plurality of conductor transposition, each conductor outer wall all is equipped with the first insulation layer, the cable core outside is equipped with around the covering, be equipped with the second insulating layer around the covering outside, the second insulating layer outside is equipped with fire-retardant layer, the fire-retardant layer outside is equipped with the anti-buffer layer, be equipped with the sheath outside the anti-buffer layer, the utility model discloses the anti-seismic property, anti stretchability and the wear resistance of cable have been strengthened, have increased the life of cable.

Description

B1-grade high-flame-retardant control cable for rail transit

Technical Field

The utility model relates to a cable field, concretely relates to high flame retardant control cable of B1 level for track traffic.

Background

With the rapid development of the rail transit industry in China, the demand of cables for rail transit is increasing continuously, and the performance of the rail transit cables is particularly important. The cable for the existing track traffic can not meet the requirements on the shock resistance and the tensile resistance of the cable in some severe subway environments, and has large cable abrasion consumption and short service life in the environment of long-term vibration.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome foretell not enough, provide the high flame retardant control cable of B1 level for track traffic, include the cable core that is formed by a plurality of conductor transposition, each conductor outer wall all is equipped with the first insulation layer, the cable core outside is equipped with around the covering, be equipped with the second insulating layer around the covering outside, the second insulating layer outside is equipped with fire-retardant layer, the fire-retardant layer outside is equipped with the buffer resistance layer, be equipped with the sheath outside the buffer resistance layer, the sheath surface prolongs the circumferencial direction interval and is equipped with if a trapezoidal recess, all be equipped with first reinforcement in every trapezoidal recess, the sheath is inside to prolong the circumferencial direction and still the interval and be equipped with a plurality of bar through-holes, be equipped with a plurality of second reinforcements in the bar through-hole.

Preferably, the first reinforcing member is made of an aluminum magnesium alloy, and the second reinforcing member is a steel wire rope.

Preferably, the buffer-resistant layer is formed by filling the polyester rope.

Preferably, a plurality of insulating rubber particles are filled between the wrapping layer and the cable core.

Preferably, the outer side of the sheath is provided with a water-blocking layer, and the water-blocking layer is externally provided with a rubber wear-resistant layer.

Preferably, the water-blocking layer is formed by weaving expansion water-blocking yarns, and a plurality of convex ribs are arranged on the outer surface of the rubber wear-resistant layer at intervals along the circumferential direction.

Preferably, the flame retardant layer is made of low smoke, halogen free flame retardant polyolefin.

Preferably, the first insulating layer and the second insulating layer are both made of cross-linked polyethylene.

The utility model has the advantages that: through inside wire rope and the flexible reinforcement of sheath, increase the stretch-proofing ability and the anti ability of buckling of cable, fill the rubber granule around between covering and the cable core, can increase the anti-seismic performance of cable, be equipped with the anti-seismic performance that special anti-buffer layer comes the increase cable in addition, the rubber wearing layer has increased the wearability of cable, the fin of wearing layer surface has further increased the wearability and the anti-seismic performance of cable, prevent that the cable from damaging the conductor in the environment of long-term vibrations.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a principal schematic view of the present invention;

in the figure: 1. a conductor; 2. a first insulating layer; 3. wrapping a covering; 4. a second insulating layer; 5. a flame retardant layer; 6. an anti-buffer layer; 7. a sheath; 8. a trapezoidal groove; 9. a strip-shaped through hole; 10. a water resistant layer; 11. a rubber wear layer; 12. and ribs.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the high flame retardant control cable of B1 level for track traffic includes the cable core that is formed by the transposition of a plurality of conductors 1, and 1 outer wall of each conductor all is equipped with first insulation layer 2, the cable core outside is equipped with around covering 3, be equipped with second insulating layer 4 around the covering 3 outside, the 4 outsides of second insulating layer are equipped with fire-retardant layer 5, the 5 outsides of fire-retardant layer are equipped with buffer resistance layer 6, buffer resistance layer 6 is equipped with sheath 7 outward, 7 surfaces of sheath extend the circumferencial direction interval and are equipped with if trapezoidal recess 8, all be equipped with first reinforcement in every trapezoidal recess 8, 7 inside circumferencial direction that prolongs of sheath is still spaced and is equipped with a plurality of bar through-holes 9, be equipped with a plurality of second reinforcements in the bar through-hole 9. The utility model discloses, increase the stretch-proofing ability and the anti ability of buckling of cable through first reinforcement and second reinforcement, increase the shock resistance of cable through the buffer layer, protect the cable inner conductor in abominable environment, slow down vibrations and lead to inner conductor fracture or deformation, increase the life of cable.

First reinforcement is made by almag, and almag has intensity height, and density is little, and the heat dissipation advantage such as good often is used for making the metal collapsible tube who connects tap, and the effectual anti bending capability who increases the cable of first reinforcement made by almag protects the inner conductor, prevents the inner conductor fracture, still can increase the heat-sinking capability of cable, the second reinforcement is wire rope, and wire rope has higher tensile strength, anti fatigue strength and shock resistance, can normally work in the adverse circumstances of each harmful medium, makes the tensile strength of cable promote by a wide margin.

The buffer-resistant layer 6 is filled with polyester ropes, has high strength and elastic recovery capability, and can buffer the cable in a vibration environment to protect the inner conductor.

A plurality of insulating rubber particles are filled between the wrapping layer 3 and the cable core, so that the anti-vibration capability of the conductor is improved, and the cable can be used in a long-time vibration environment.

The outer side of the sheath layer 7 is provided with a water-resistant layer 10, and a rubber wear-resistant layer 11 is arranged outside the water-resistant layer 10.

The water-blocking layer 10 is woven by the yarn that blocks water of inflation and is formed, 11 surfaces of rubber wearing layer extend the circumferencial direction interval and are equipped with a plurality of ribs 12, increase the water-blocking and the wearability of cable, the rib also is rubber products, effectively makes the cable more resist shock more anti buckling, still can further increase the wearability of cable, can wear and tear rubber rib earlier after the cable uses for a long time, delays the wearing and tearing time of cable body, has increased the life of cable.

The flame retardant layer 5 is made of low smoke halogen-free flame retardant polyolefin.

The first insulating layer 2 and the second insulating layer 4 are both made of cross-linked polyethylene.

The utility model discloses having carried out multiple enhancement to the cable body, having reduced the influence of external environment to the cable, made the cable can use in the long-term abominable condition of external environment.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A B1-grade high-flame-retardant control cable for rail transit is characterized in that: include the cable core that is formed by the transposition of a plurality of conductors, each conductor outer wall all is equipped with the first insulation layer, the cable core outside is equipped with around the covering, be equipped with the second insulating layer around the covering outside, the second insulating layer outside is equipped with fire-retardant layer, the fire-retardant layer outside is equipped with anti-buffer layer, anti-buffer layer is equipped with the sheath outward, the sheath surface prolongs the circumferencial direction interval and is equipped with if a trapezoidal recess, all be equipped with first reinforcement in every trapezoidal recess, the sheath is inside to prolong circumferencial direction still interval and is equipped with a plurality of bar through-holes, be equipped with a plurality of second reinforcements in the bar through-hole.

2. The grade B1 high flame retardant control cable for rail transit according to claim 1, wherein: the first reinforcing member is made of aluminum magnesium alloy, and the second reinforcing member is a steel wire rope.

3. The grade B1 high flame retardant control cable for rail transit according to claim 1, wherein: the anti-buffer layer is filled by polyester ropes.

4. The grade B1 high flame retardant control cable for rail transit according to claim 1, wherein: and a plurality of insulating rubber particles are filled between the wrapping layer and the cable core.

5. The grade B1 high flame retardant control cable for rail transit according to claim 1, wherein: the sheath is provided with a water blocking layer on the outer side, and a rubber wear-resistant layer is arranged outside the water blocking layer.

6. The grade B1 high flame retardant control cable for rail transit according to claim 5, wherein: the water-resistant layer is formed by weaving expansion water-resistant yarns, and a plurality of convex ribs are arranged on the outer surface of the rubber wear-resistant layer at intervals along the circumferential direction.

7. The grade B1 high flame retardant control cable for rail transit according to claim 5, wherein: the flame-retardant layer is made of low-smoke halogen-free flame-retardant polyolefin.

8. The grade B1 high flame retardant control cable for rail transit according to claim 1, wherein: the first insulating layer and the second insulating layer are both made of cross-linked polyethylene.