CN210743641U

CN210743641U - Cable for shield machine

Info

Publication number: CN210743641U
Application number: CN201920848861.3U
Authority: CN
Inventors: 王树长; 王英杰; 巩石磊; 崔亮亮; 方素梅; 董美红; 韩树文; 徐运涛; 王宝花
Original assignee: Taitong Cable Co ltd
Current assignee: Taitong Cable Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-06-12
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a cable for shield machine, which comprises a main wire core and an outer sheath, wherein an armored bush with a regular hexagon cross section is arranged between the main wire core and the outer sheath, and cavities are respectively formed between the inner side and the outer side of the armored bush and between the main wire core and the outer sheath; the main wire core comprises a conductor wire and a ground wire, wherein a conductor wire insulating layer is coated on the outer side of the conductor wire, a shape retaining layer is coated on the outer side of the conductor wire insulating layer, a ground wire insulating layer is coated on the outer side of the ground wire, and the shape retaining layer and the ground wire insulating layer are jointly coated with a semi-conductive rubber layer; the outer sheath comprises an inner cladding, an outer cladding and an anti-cutting layer; the armored bush can effectively protect the main wire core, and a plurality of cavities are formed between the main wire core and the outer sheath, so that the heat conductivity coefficient between the main wire core and the outer sheath is remarkably reduced, and the cold resistance of the main wire core is improved; in addition, the outer sheath is internally provided with an anti-cutting layer which can effectively prevent sharp edges of stones and sand particles from penetrating through the outer sheath.

Description

Cable for shield machine

Technical Field

The utility model relates to the technical field of cables, concretely relates to shield constructs machine cable.

Background

The cable of the shield machine works in the underground low-temperature environment, and is often soaked by water and squeezed by stones and sand grains, so that the cable of the shield machine in the market has the problems of poor cold resistance and easiness in damage, and is not favorable for stable and safe work of the shield machine

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model aims to provide a shield constructs machine cable, it has effectively solved the problem that exists among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a cable for a shield machine comprises a main wire core and an outer sheath, wherein an armored bushing with a regular hexagonal cross section is arranged between the main wire core and the outer sheath, and cavities are respectively formed between the inner side and the outer side of the armored bushing and between the main wire core and the outer sheath;

the main wire core comprises a conductor wire and a ground wire, wherein a conductor wire insulating layer is coated on the outer side of the conductor wire, a shape-retaining layer is coated on the outer side of the conductor wire insulating layer, a ground wire insulating layer is coated on the outer side of the ground wire, and the shape-retaining layer and the ground wire insulating layer are jointly coated with a semi-conductive rubber layer;

the outer sheath comprises an inner cladding, an outer cladding and an anti-cutting layer arranged between the inner cladding and the outer cladding, and the anti-cutting layer is formed by wrapping an ultra-high molecular weight polyethylene fiber layer on a reinforcing core.

Further, the conductor line and the ground line are both copper lines.

Furthermore, the conductor wire insulating layer and the ground wire insulating layer are both made of thermoplastic elastomer (TPE).

Furthermore, the cross section of the shape keeping layer is in a regular hexagon shape, and the shape keeping layers on the outer sides of the conductor wire insulating layers are combined into a honeycomb shape.

Furthermore, the material of the shape-keeping layer is neoprene.

Furthermore, the inner cladding and the outer cladding are both made of thermoplastic polyurethane elastomer rubber.

Further, the reinforced core is one of spandex, glass fiber and steel wire.

The utility model discloses following beneficial technological effect has:

the utility model discloses in use the armor bush that sets up between main line core and oversheath, not only can effectively protect the main line core and form a plurality of cavitys between main line core and oversheath, showing and reducing the coefficient of heat conductivity between main line core and the oversheath, improve the cold resistance of main line core; in addition, be provided with the anti-cutting layer in the oversheath, its sharp-pointed edges and corners that can effectively avoid stone and grains of sand run through the oversheath, have further strengthened the anti damage performance of cable, and this application modern design, convenience safe in utilization is fit for using widely.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the cable for the shield machine according to the embodiment includes a main wire core 1 and an outer sheath 2, an armor bushing 3 with a cross section being a regular hexagon is arranged between the main wire core 1 and the outer sheath 2, the material of the armor bushing 3 is steel, a cavity 4 is respectively formed between the inner side and the outer side of the armor bushing 3 and between the main wire core 1 and the outer sheath 2, and air is naturally filled in the cavity 4, so that the heat transfer between the main wire core 1 and the outer sheath 2 is weakened due to the low heat conductivity coefficient of the air, the main wire core 1 is prevented from being affected by low temperature, the contact area between the regular hexagon armor bushing 3 and the outer sheath 2 is small, and the heat transfer is further;

the main wire core 1 comprises three conductor wires 5 and ground wires 6, the number of the conductor wires 5 and the number of the ground wires 6 are respectively three, the outer side of each conductor wire 5 is respectively coated with a conductor wire insulating layer 7, the outer side of each conductor wire insulating layer 7 is coated with a shape-retaining layer 8, the outer side of each ground wire 6 is coated with a ground wire insulating layer 9, and the shape-retaining layers 8 and the ground wire insulating layers 9 are jointly coated with a semiconductive rubber layer 10; oversheath 2 includes inner cladding 11, surrounding layer 12 and set up the anti-cutting layer 13 between inner cladding 11 and surrounding layer 12, anti-cutting layer 13 is ultra high molecular weight polyethylene fiber layer cladding enhancement core 14, enhancement core 14 is the spandex, one kind in glass fiber and the steel wire, sharp-pointed edges and corners that anti-cutting layer 13 can effectively avoid stone and grains of sand run through oversheath 2, the anti-damage performance of cable has been strengthened, just also effectively avoided moisture to get into oversheath 2 from the damaged in the department, the anti infiltration performance of cable has been improved, in addition, in order to facilitate the manual work of cable to cut the cable and the wiring of skinning, anti-cutting layer 13 can set up the multistage along cable axis direction interval, interval between the adjacent anti-cutting 13 layer is not more than 3mm, can make things convenient for manual work to cut also can show the probability that reduces stone and grains of sand puncture oversheath 2.

The conductor wire 5 and the ground wire 6 are stranded copper wires, the conductor wire insulating layer 7 and the ground wire insulating layer 9 are both made of thermoplastic elastomer (TPE), and the TPE has high strength, high elasticity and good insulating property.

The cross section of shape-retaining layer 8 is regular hexagon, and shape-retaining layer 8 in each conductor wire insulating layer 7 outside makes up into alveolate, and alveolate shape-retaining layer 8 can improve main line core 1's anti extrusion strength, and it is big to fill the space in regular hexagon's shape-

retaining layer

8, and 7 thicknesses of conductor wire insulating layer have obtained the assurance, are favorable to obtaining good insulating effect, and shape-retaining layer 8's material is chloroprene rubber, and chloroprene rubber has good physical mechanical properties and heat-resisting, resistant fire.

The inner cladding 11 and the outer cladding 12 are thermoplastic polyurethane elastomer rubber TPU, the wear resistance is excellent, a cable of the shield tunneling machine needs to be dragged frequently, and the outer cladding 12 and the inner cladding 11 made of TPU can effectively avoid the outer sheath 2 from being worn easily.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The cable for the shield machine is characterized by comprising a main wire core and an outer sheath, wherein an armored bushing with a regular hexagonal cross section is arranged between the main wire core and the outer sheath, and cavities are respectively formed between the inner side and the outer side of the armored bushing and between the main wire core and the outer sheath;

2. The cable for shield tunneling machine of claim 1, wherein the conductor wire and the ground wire are copper wires.

3. The cable for the shield tunneling machine according to claim 1, wherein the insulating layer of the conductor line and the insulating layer of the ground line are both made of thermoplastic elastomer (TPE).

4. The cable for shield tunneling machine of claim 1, wherein the cross section of the conformal layers is regular hexagon, and the conformal layers outside the insulation layers of the conductor wires are combined into a honeycomb shape.

5. The cable for the shield tunneling machine according to claim 4, wherein the material of the shape-retaining layer is neoprene.

6. The cable for shield tunneling machine of claim 1, wherein the inner cladding and the outer cladding are made of thermoplastic polyurethane elastomer rubber.

7. The cable for a shield tunneling machine according to claim 1, wherein the reinforcing core is one of spandex, glass fiber, and steel wire.