CN203217967U - a special cable - Google Patents

Abstract

The utility model discloses an extraordinary cable, whose cable core is formed by stranding a control line set, a communication line set and pull components. A first polyethylene insulation layer is extruded from a first circular tinning copper wire to form a control core, and a first polyolefin sheath is extruded from four combined control cores to form the control line set; a polyethylene insulation layer is extruded from a bare copper conductor, a copper wire braided durance layer is arranged outside the polyethylene insulation layer, and a third polyolefin sheath is extruded from the copper wire braided durance layer to form the communication line set; and the cable core is wrapped in a polyester film, a polyolefin inner sheath is extruded from the polyester film, an aramid-fiber pull layer is arranged outside the polyolefin inner sheath, and a polyurethane sheath is arranged outside the aramid-fiber pull layer. The extraordinary cable of the utility model can satisfy index requirements for electrical and mechanical performance while having satisfying wearing resistance, pull resistance and waterproof performance.

Description

a special cable

technical field

The utility model belongs to the field of wires and cables, in particular to a special cable.

Background technique

The cable is usually a rope-like cable made of several or several groups of wires, each group is twisted with at least two wires, each group of wires is insulated from each other, and is often twisted around a center, and the entire outer surface is covered with a high degree of insulation the covering layer of .

Special cables are a series of products with unique properties and special structures, which are equivalent to ordinary wires and cables with a large quantity and a wide range. They have the characteristics of high technical content, strict service conditions, small batches, and high added value. New materials, new structures, new processes and new design calculations are often used.

Utility model content

The purpose of the utility model is to provide a special cable, which can meet the requirements of other electrical performance and mechanical performance indicators, and can also meet the wear resistance, tensile resistance and water resistance of the cable.

The scheme of the utility model is as follows: a special cable, the cable core of which is twisted by a control line group, a communication line group and tension components; a tinned round copper wire, an outer extruded polyethylene insulating layer, and a control line core , four groups of control wire cores are combined and extruded with a polyolefin sheath on the outer layer to form a control wire group; a polyethylene insulation layer is extruded outside the bare copper conductor, and a copper wire confinement layer is braided outside the polyethylene insulation layer, and the copper wire confinement layer Three outer extruded polyolefin sheaths form a communication line group; the outer layer of the cable core is wrapped with polyester film, and the outer layer of the polyester film is extruded with a polyolefin inner sheath, and the outer layer of the polyolefin inner sheath is equipped with aramid tension Layer, aramid tension layer with polyurethane sheath.

The tensile element is twisted from multiple strands of aramid fibers.

The ratio of the number of aramid strands of the tensile component to the number of aramid wheels of the aramid tension layer is 2:3.

The beneficial effects of the utility model:

1. High safety and reliability. The control wire group, communication wire group, and tension components form a comprehensive cable, which greatly increases the safety of the equipment; at the same time, 3-core filler element tension components and braided aramid fiber tension components are used to form a combined tension component. , which makes the cable force more balanced and even, effectively reduces the risk of using only one form, and improves the safety and reliability of the entire system.

2. Light weight and small outer diameter. Since aramid fiber is a polymer compound, its specific gravity is generally below 1.5. Under the same weight condition, it is more than 5 times the breaking force of steel wire. Under the premise of pulling a robot with the same weight, the weight of the cable can be reduced by about 5%. The diameter will also be slightly lighter than steel wire as a cable in the form of tension components, which is very high in terms of outer diameter reduction and weight reduction in ship and underwater operating environments.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

A special cable whose cable core is twisted by control wire group, communication wire group and tension components 12; After the wire cores are combined, a polyolefin sheath 13 is extruded on the outer layer to form a control wire group; a polyethylene insulating layer 5 is extruded on the bare copper conductor 4, and a copper wire confinement layer 6 is braided outside the polyethylene insulation layer 5, and the copper wire confinement layer 6 is formed. Layer 6 is extruded with a polyolefin sheath 3 7 to form a communication line group; the cable core is wrapped with a polyester film 8, and the outer layer of the polyester film 8 is extruded with a polyolefin inner sheath 9, and the polyolefin inner sheath 9 The outer layer is provided with an aramid fiber tension layer 10, and the aramid fiber tension layer 10 is provided with a polyurethane sheath 11 outside.

The tensile element 12 is twisted from multiple strands of aramid fiber.

The ratio of the number of aramid strands of the tensile component 12 to the number of aramid wheels of the aramid tension layer 10 is 2:3.

Although the specific embodiments of the present invention have been described and illustrated in detail above, it should be noted that we can carry out various equivalent changes and modifications to the above-mentioned embodiments according to the concept of the present invention, and the functional effects produced by it If it still does not exceed the spirit covered by the specification and drawings, it should be within the protection scope of the present utility model.

Claims (3)

1. special cable is characterized in that cable core by control line group, connection group and the pulling force components and parts are stranded forms;

The zinc-plated circular copper wire one outer polyethylene layer one that extrudes is formed the control core, and four groups of control core combination backs extrude polyolefin jacket one at skin, form the control line group;

Extrude polyethylene layer outside bare copper conductor, polyethylene layer weaves copper cash outward and confines layer, and copper cash is confined the outer polyolefin jacket three that extrudes of layer, forms the connection group;

The outer wrapped polyester film of cable core extrudes the polyolefin inner sheath at the polyester film skin, is provided with aramid fiber pulling force layer at polyolefin inner sheath skin, and aramid fiber pulling force layer is provided with polyurethane jacket outward.

2. a kind of special cable according to claim 1 is characterized in that described pulling force components and parts are to form by the multiply aramid fiber is stranded.

3. a kind of special cable according to claim 2 is characterized in that the virtue wheel number of share of stock of the aramid fiber number of share of stock of described pulling force components and parts and aramid fiber pulling force layer is than being 2:3.

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