CN215933225U

CN215933225U - Special cable for slag extractor

Info

Publication number: CN215933225U
Application number: CN202122552547.0U
Authority: CN
Inventors: 高彦军; 石卫娟; 彭高攀; 孙六锋; 任子媛; 齐国苹
Original assignee: Henan Haoxiang Electric Cable Manufacturing Co ltd
Current assignee: Henan Haoxiang Electric Cable Manufacturing Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-03-01
Anticipated expiration: 2031-10-22

Abstract

The utility model relates to the technical field of cables, and discloses a special cable for a slag extractor, which comprises an outer sheath, wherein the cross section of the outer sheath is of a flat structure, a plurality of core conductors are arranged in the outer sheath side by side, each core conductor is formed by twisting a plurality of strands of copper wires in an S-Z mode, the diameter of each strand of copper wire is 0.2mm, the outer ring of each core conductor is respectively extruded with an insulating layer, the insulating layer is wound with a water-blocking tape, and the outer side of the water-blocking tape is extruded with an inner sheath; the power core conductor is provided with three and arranges side by side equidistance, and neutral core conductor and earth connection core conductor are respectively provided with one and arrange respectively between two adjacent power core conductors, and the cross-section of neutral core conductor and earth connection core conductor all is less than the cross-section of power core conductor. The utility model can solve the problems that the existing cable for the slag tapping machine is easy to be stressed unevenly and has poor moisture resistance in the use process.

Description

Special cable for slag extractor

Technical Field

The utility model relates to the technical field of cables, in particular to a special cable for a slag extractor.

Background

The mucking machine is special mucking soil transportation equipment for subway, and during the excavation of a foundation pit, mucking soil is loaded into a hopper of the mucking machine, lifted to a specified height by an electric hoist on a trolley on the equipment, loaded into a cart on the ground, directly conveyed to a specified position by the cart, tipped over the hopper through a tipping device, and poured out. In the process of back and forth movement of a trolley or a cart, the cable needs to move back and forth, but the cable used in the prior art is simple in structure, uneven in stress of the cable in the dragging process, and if the outer layer of the cable does not protect the inner core, the cable is easy to wear and is inconvenient to use. In addition, when the foundation ditch excavation environment is comparatively moist compared with other environment, conventional cable can't guarantee humidity resistance.

Disclosure of Invention

The utility model aims to provide a special cable for a slag extractor, which is used for solving the problems that the existing cable for the slag extractor is easy to be stressed unevenly and the moisture resistance is poor in the using process.

In order to solve the problems, the utility model adopts the following technical scheme:

a special cable for a slag extractor comprises an outer sheath, wherein the section of the outer sheath is of a flat structure, a plurality of core conductors are arranged in the outer sheath side by side, each core conductor is formed by twisting a plurality of copper wires in an S-Z mode, the diameter of each copper wire is 0.2mm, the outer ring of each core conductor is respectively extruded with an insulating layer, a water blocking tape is wound outside the insulating layer, and the inner sheath is extruded outside the water blocking tape;

the power core conductor is provided with three and arranges side by side equidistance, and neutral core conductor and earth connection core conductor are respectively provided with one and arrange respectively between two adjacent power core conductors, and the cross-section of neutral core conductor and earth connection core conductor all is less than the cross-section of power core conductor.

Optionally, the outer surface of the outer sheath corresponding to the three power core conductors is respectively provided with a convex structure, the outer surface of the outer sheath located between two adjacent convex structures is provided with a planar structure, and the tensile steel wires are arranged below the planar structure and are uniformly distributed on two sides of the neutral core conductor and the ground wire core conductor.

Optionally, the planar structure is coated with an antistatic layer.

Optionally, the color of the inner sheath of the power core conductor is black, and the color of the inner sheath of the ground core conductor is yellow-green.

Optionally, the outer sheath is made of nitrile rubber.

By adopting the technical scheme, the utility model has the following advantages:

compared with the existing cable structure, on one hand, the core conductor is stranded by thinner copper wires in an S-Z mode, the stranding pitch is smaller, the molded core conductor is more round, the stress is more uniform, and the tensile capacity is stronger. In addition, the tensile steel wires uniformly distributed in the middle of the whole cable can further improve the tensile strength of the whole cable, and the area of a friction contact surface can be reduced by the protruding structure, so that the abrasion is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Reference numerals: 1. oversheath, 11, planar structure, 12, tensile steel wire, 13, antistatic layer, 2, power core conductor, 3, neutral core conductor, 4, earth connection core conductor, 5, insulating layer, 6, water-blocking tape, 7, inner sheath.

Detailed Description

In order to make the technical purpose, technical solution and beneficial effects of the present invention more clear, the technical solution of the present invention is further described below with reference to fig. 1 and the specific embodiment.

An embodiment of a special cable for a slag tapping machine comprises the following steps:

a special cable for a slag extractor comprises an outer sheath 1, the section of the outer sheath 1 is of a flat structure, a plurality of core conductors are arranged in parallel inside the outer sheath 1, each core conductor is formed by twisting a plurality of strands of copper wires in an S-Z mode, the diameter of each strand of copper wire is 0.2mm, the diameter of a conventional copper wire is 0.33 or 0.4mm, the copper wires in the special cable are thinner than the copper wires in the prior art, the twisting pitch of the core conductors is smaller (the twisting pitch refers to the distance of a single wire rotating for one circle along the axial direction of a stranded wire), the core conductors are more round and uniform in stress after being formed, an insulating layer 5 is respectively extruded on the outer ring of each core conductor, the insulating layer 5 is insulated by ethylene propylene rubber with high insulation and low water absorption, a layer of a water blocking tape 6 is wound outside the insulating layer 5, the excavation environment of a foundation pit is relatively moist, and the water blocking tape 6 can play a certain moisture-proof role, the overall safety of the cable is improved, the inner sheath 7 is extruded and wrapped on the outer side of the water blocking tape 6, the inner sheath 7 is made of sheath glue with polyethylene as a base material, the inner sheath 7 can ensure that the stranded wire structure of the core conductor is not scattered, the color of the inner sheath 7 of the power core conductor 2 is black, and the color of the inner sheath 7 of the grounding wire core conductor 4 is yellow green, so that the identification is facilitated;

the sinle silk conductor includes power sinle silk conductor 2, neutral sinle silk conductor 3 and earth connection core conductor 4, power sinle silk conductor 2 is equipped with three and arranges the equidistance side by side, and neutral sinle silk conductor 3 and earth connection core conductor 4 respectively are provided with one and arrange respectively between two adjacent power sinle silk conductors 2, and the cross-section of neutral sinle silk conductor 3 and earth connection core conductor 4 all is less than the cross-section of power sinle silk conductor 2.

On one hand, the cable has two twisting directions, namely the left direction and the right direction, and the twisting directions of the layers of the cable stranded wires are opposite, so that the rotating moments generated by the layers can be mutually counteracted, the strands are prevented from being loosened by rotating in the same direction, the tensile strength is stronger, and the opposite directions of the magnetic lines of force can be ensured under the condition of generating the magnetic lines of force, the magnetic lines of force of the layers are mutually counteracted, and the alternating current impedance is reduced; on the other hand, the extruder can conveniently form a series production line with the extruder, thereby reducing the loss, improving the production efficiency and saving the working site and energy consumption.

As one embodiment of the present invention, further, the outer surface of the outer sheath 1 corresponding to the three power core conductors 2 is a convex structure, the outer surface of the outer sheath 1 between two adjacent convex structures is a planar structure 11, tensile steel wires 12 are arranged below the planar structure 11, and the tensile steel wires 12 are uniformly distributed on two sides of the neutral core conductor 3 and the ground core conductor 4. On one hand, the convex structure is higher than the plane structure 11, and when the whole cable is in contact with a friction surface, the area of the friction contact surface can be reduced, and the heating, the abrasion and the like are reduced; on the other hand, the tensile steel wires 12 correspond to the neutral wire core conductor 3 and the grounding wire core conductor 4 and are uniformly distributed in the cable, so that the overall tensile strength of the cable can be improved.

As one embodiment of the present invention, further, an antistatic layer 13 is coated on the planar structure 11, and the antistatic layer 13 is made of an antistatic coating, such as an antistatic metal oxide-based coating. The static electricity generated on the surface of the cable in the dragging process can be avoided, and the safety performance is improved.

As one of the embodiments of the present invention, further, the outer sheath uses nitrile rubber.

The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a special cable of mucking machine, includes the oversheath, its characterized in that: the section of the outer sheath is of a flat structure, a plurality of wire core conductors are arranged in parallel in the outer sheath, each wire core conductor is formed by twisting a plurality of strands of copper wires in an S-Z mode, the diameter of each strand of copper wire is 0.2mm, an insulating layer is extruded on the outer ring of each wire core conductor, a water blocking tape is wound on the insulating layer, and an inner sheath is extruded on the outer side of the water blocking tape;

2. The special cable for the slag tapping machine as claimed in claim 1, wherein: the outer surface of the outer sheath is provided with protruding structures corresponding to the three power wire core conductors, the outer surface of the outer sheath between every two adjacent protruding structures is provided with a plane structure, tensile steel wires are arranged below the plane structure, and the tensile steel wires are evenly distributed on two sides of the neutral wire core conductor and the two sides of the grounding wire core conductor.

3. The special cable for the slag tapping machine as claimed in claim 2, wherein: the plane structure is coated with an antistatic layer.

4. The special cable for the slag tapping machine as claimed in claim 1, wherein: the color of the inner sheath of the power wire core conductor is black, and the color of the inner sheath of the grounding wire core conductor is yellow green.

5. The special cable for the slag tapping machine as claimed in claim 1, wherein: the outer sheath is made of nitrile rubber.