CN210777894U

CN210777894U - Cable for shield machine

Info

Publication number: CN210777894U
Application number: CN201922127681.9U
Authority: CN
Inventors: 陶瑞祥; 任加新; 李丰
Original assignee: Shandong Zhengtai Cable Co ltd
Current assignee: Shandong Zhengtai Cable Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-16
Anticipated expiration: 2029-11-28

Abstract

A cable for a shield machine comprises a plurality of wire cores which are uniformly distributed in the circumferential direction, wherein an isolation layer is wrapped outside the plurality of wire cores, a ground wire is filled in a region surrounded by the plurality of wire cores, the plurality of wire cores and the ground wire are twisted together, semiconductor rubber is filled between the isolation layer and the wire cores, and an outer sheath made of chloroprene rubber material is wrapped outside the isolation layer; the utility model discloses an inside ground wire that fills of cable, and fill the semiconductor rubber between isolation layer and sinle silk after, when the insulating layer of sinle silk is damaged and when leading to the conductor electric leakage, under the effect of semiconductor rubber and ground wire, can realize the ground connection to the conductor to can effectively avoid the emergence of electric leakage, electric shock and other accidents, eliminated the potential safety hazard.

Description

Cable for shield machine

Technical Field

The utility model relates to the technical field of cables, the more specifically cable for shield constructs machine that says so.

Background

At present, most of cables in shield machine equipment for rail transit construction in the market are assembled and used by medium-voltage ethylene propylene rubber insulated power cables specified in national standard GB/T12706.2-2008 or flame-retardant cables for coal mines purchased directly. With the improvement of modern construction automation, the cable application place of the shield machine needs to meet the requirement of a higher rated voltage, and the bending radius of the cable is small. Because the shield machine operates in the sea (river) bottom tunnel, the mountain tunnel and other tunnel environments, and the environments are dark and humid, and are bent frequently, moved, wound and other severe and variable harsh conditions, if the cable is adopted, the service performance and the long-term stability of the cable cannot be guaranteed powerfully, the cable is often subjected to the conditions of conductor open circuit, insulation damp breakdown, electric leakage, short circuit and the like in advance in the process of carrying out underground long-term continuous work, even the whole equipment is completely paralyzed, the tunneling work is forced to be suspended, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a cable for shield constructs machine, it is through filling the ground wire in cable inside, and after packing semiconductor rubber between isolation layer and sinle silk, when the insulating layer of sinle silk is damaged and lead to the conductor electric leakage, under the effect of semiconductor rubber and ground wire, can realize the ground connection to the conductor to can effectively avoid the emergence of electric leakage, electric shock and other accidents, eliminated the potential safety hazard.

The technical solution of the utility model is that, a shield constructs machine cable with following structure is provided, be circumference evenly distributed's sinle silk including a plurality of roots, the outside of a plurality of sinle silks is wrapped up together has the isolation layer, and it has the ground wire to fill in the region that a plurality of sinle silks enclose, and a plurality of sinle silks are together stranded with the ground wire, and it has semiconductor rubber to fill between isolation layer and the sinle silk, and the outside parcel of isolation layer has the oversheath of being made by the chloroprene rubber material.

The utility model discloses a cable for shield machine, wherein, every sinle silk all includes the conductor, and the outside parcel of conductor has first semi-conductive composite bed, and the outside parcel of first semi-conductive composite bed has rubber insulation layer, and the outside parcel of rubber insulation layer has second semi-conductive composite bed, and the outside parcel of second semi-conductive composite bed has the shielding layer; the first semiconductive composite layer, the rubber insulating layer and the second semiconductive composite layer are produced in a three-layer co-extrusion mode, and the insulation grade of a conductor is guaranteed.

The utility model discloses a cable for shield machine, wherein, the shielding layer is woven by tinned copper wires and reinforcing fibers; through the arrangement of the shielding layer, the effective conductivity of the shielding layer is ensured, and the mechanical strength of the shielding layer is also ensured.

The utility model discloses a cable for shield machine, wherein, it has the stripping rope to fill between shielding layer and the second semi-conductive composite bed, the stripping rope extends along the length direction of shielding layer and second semi-conductive composite bed; through the setting of peeling off the rope, when needs peel off the shielding layer, peel off the rope through the pulling and can make to peel off the rope and cut the shielding layer to can improve the efficiency of peeling off to the shielding layer.

The utility model discloses a shield constructs machine cable, wherein, the conductor is the soft copper conductor of tin-plating.

The utility model discloses a shield constructs machine cable, wherein, the radical of sinle silk is three.

After the structure more than adopting, compare with prior art, the utility model discloses an after the inside ground wire that fills of cable, and fill semiconductor rubber between isolation layer and sinle silk, when the insulating layer damage of sinle silk and when leading to the conductor electric leakage, under the effect of semiconductor rubber and ground wire, can realize the ground connection to the conductor to can effectively avoid the emergence of electric leakage, electric shock and other accidents, eliminated the potential safety hazard.

Drawings

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

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Detailed Description

The invention will be described in further detail with reference to the following drawings and embodiments:

as shown in fig. 1-2, in the present embodiment, the cable for shield machine of the present invention comprises a plurality of wire cores 1 uniformly distributed in circumferential direction, an isolation layer 2 is wrapped outside the plurality of wire cores 1, a ground wire 3 is filled in a region surrounded by the plurality of wire cores 1, the plurality of wire cores 1 are twisted with the ground wire 3, a semiconductor rubber 4 is filled between the isolation layer 2 and the wire cores 1, and an outer sheath 5 made of neoprene is wrapped outside the isolation layer 2; the utility model discloses a fill the ground wire in the cable, and fill the semiconductor rubber between isolation layer and sinle silk, when the insulating layer damage of sinle silk leads to the conductor electric leakage, under the effect of semiconductor rubber and ground wire, can realize the ground connection to the conductor to can effectively avoid the emergence of electric leakage, electric shock and other accidents, eliminated the potential safety hazard; the utility model discloses when using, need be with its inside ground wire ground connection.

Each wire core 1 comprises a conductor 11, a first semiconductive composite layer 12 wraps the outside of the conductor 11, a rubber insulating layer 13 wraps the outside of the first semiconductive composite layer 12, a second semiconductive composite layer 14 wraps the outside of the rubber insulating layer 13, and a shielding layer 15 wraps the outside of the second semiconductive composite layer 14; the first semiconductive composite layer, the rubber insulating layer and the second semiconductive composite layer are produced in a three-layer co-extrusion mode, and the insulation grade of a conductor is guaranteed.

The shielding layer 15 is formed by weaving tinned copper wires and reinforcing fibers; through the arrangement of the shielding layer, the effective conductivity of the shielding layer is ensured, and the mechanical strength of the shielding layer is also ensured.

A stripping rope 16 is filled between the shielding layer 15 and the second semi-conductive composite layer 14, and the stripping rope 16 extends along the length direction of the shielding layer 15 and the second semi-conductive composite layer 14; through the setting of peeling off the rope, when needs peel off the shielding layer, peel off the rope through the pulling and can make to peel off the rope and cut the shielding layer to can improve the efficiency of peeling off to the shielding layer.

The conductor 11 is a tinned soft copper conductor; the number of the wire cores 1 is three.

The above-mentioned embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the technical solution of the present invention is not limited by the above-mentioned embodiments, and various modifications and improvements made by those skilled in the art can be made without departing from the spirit of the present invention.

Claims

1. The utility model provides a shield constructs machine cable which characterized in that: the cable comprises a plurality of cable cores (1) which are uniformly distributed in the circumferential direction, wherein an isolation layer (2) is wrapped on the outer portions of the cable cores (1), a ground wire (3) is filled in an area surrounded by the cable cores (1), the cable cores (1) and the ground wire (3) are twisted together, semiconductor rubber (4) is filled between the isolation layer (2) and the cable cores (1), and an outer sheath (5) made of chloroprene rubber materials is wrapped on the outer portions of the isolation layer (2).

2. The cable for shield tunneling machine of claim 1, wherein: each wire core (1) comprises a conductor (11), a first semi-conductive composite layer (12) is wrapped outside the conductor (11), a rubber insulating layer (13) is wrapped outside the first semi-conductive composite layer (12), a second semi-conductive composite layer (14) is wrapped outside the rubber insulating layer (13), and a shielding layer (15) is wrapped outside the second semi-conductive composite layer (14).

3. The cable for shield tunneling machine of claim 2, wherein: the shielding layer (15) is formed by weaving tinned copper wires and reinforcing fibers.

4. The cable for the shield tunneling machine according to claim 2 or 3, wherein: a stripping rope (16) is filled between the shielding layer (15) and the second semi-conductive composite layer (14), and the stripping rope (16) extends along the length direction of the shielding layer (15) and the second semi-conductive composite layer (14).

5. The cable for shield tunneling machine of claim 2, wherein: the conductor (11) is a tinned soft copper conductor.

6. The cable for the shield tunneling machine according to claim 1 or 2, wherein: the number of the wire cores (1) is three.