CN205789152U - One is the most resistance to draws wear-resisting big drop to recover cable - Google Patents

Abstract

The utility model discloses a strong-resistant, wear-resistant and large-drop rescue cable, which comprises a cable core composed of a power line group, a control line group and a signal line group arranged sequentially from inside to outside, a tension-bearing filling layer, a wrapping tape and an outer cable. Sheath; the power cord set includes at least three power cords twisted and wrapped with a metal shielding layer, and each power cord includes a copper conductor and an extruded polyvinyl chloride insulation layer; The control wire group includes a wire group twisted by at least four control wires and wrapped with a metal shielding layer, and each control wire includes a copper conductor and a polyvinyl chloride insulation layer extruded outside it; the signal wire The group includes at least three signal wires arranged side by side and wrapped with a metal shielding layer. Each signal wire includes a conductor formed by twisting multiple thin copper wires and a high-density polymer extruded outside it. Ethylene insulating layer; the utility model has excellent tensile resistance and wear resistance, and can well protect the cable conductor from being thinned.

Description

A strong tensile and wear-resistant large drop rescue cable

technical field

The utility model discloses a rescue cable with strong tensile strength, wear resistance and large drop, which belongs to the technical field of cable manufacturing.

Background technique

Generally, in the case of emergency rescue dragging or even normal laying, the cables must be strictly drawn, broken, worn out, worn out, etc., so as not to damage the cables and lose their corresponding functions. In order to ensure that when the cable is subjected to strong impact, friction and self-weight tension during the dragging process, the line will not be stretched and worn, resulting in signal distortion and power interruption, and the emergency rescue function will be lost. Therefore, a strong cable is manufactured. Tensile-resistant and light-weight cables to meet needs.

Contents of the invention

Purpose of the invention: The purpose of this utility model is to solve the problem that the existing emergency cables have poor tensile resistance and wear resistance, cannot protect the cable conductor well, and are easy to be thinned.

Technical solution: The utility model provides the following technical solutions: a strong-resistant, wear-resistant and large-drop rescue cable, including a cable core, a tape and Outer sheath; the power cord set includes at least three power cords twisted and wrapped with a metal shielding layer, and each power cord includes a copper conductor and a polyvinyl chloride insulating layer extruded outside it; The control wire group includes a wire group formed by twisting at least four control wires and a metal shielding layer is wrapped around it, and each control wire includes a copper conductor and a polyvinyl chloride insulation layer extruded outside it; the signal The wire group includes at least three signal wires arranged side by side and wrapped with a metal shielding layer. Each signal wire includes a conductor formed by twisting multiple thin copper wires and a high-density wire extruded outside it. Polyethylene insulation layer; a tensile filling layer is set in the gap of the cable core, and the tensile filling layer is composed of a number of thin strands stranded by aramid fibers; the cable core is wrapped around the core and wrapped around it The outer sheath is extruded.

As an optimization, the signal wire is twisted from at least three round copper wires, and a high-density polyethylene insulating layer is extruded outside it.

As an optimization, the metal shielding layers of the signal wire group, the power wire group and the control wire group are all double-layer wrapped with aluminum-plastic tape for shielding, and the overlapping rate is not less than 50%.

As an optimization, the wrapping tape is a polypropylene wrapping tape with double-layer overlapping wrapping.

As an optimization, the tensile filling layer is a number of fine strands twisted from poly-p-phenylene terephthalamide fibers and filled in the voids of the cable core.

As an optimization, the control wire is twisted from at least three round copper wires and extruded with a polyvinyl chloride layer.

As an optimization, the power cord is twisted from at least three round copper wires and extruded with a polyvinyl chloride layer.

As an optimization, the outer sheath is a polyurethane outer sheath.

As an optimization, the signal lines on both sides constitute a transmission loop, and the signal line in the middle is a spare signal line.

Beneficial effect: compared with the prior art, the utility model:

The design of the tensile filling layer is adopted. The tensile filling is not a separate layer, but is filled in the gap of the cable core, so that the force is not limited to the surface of the cable. With this design, the wire group in the cable core will not be Thinning, affecting signal transmission.

The signal line group adopts the design of at least three signal lines arranged side by side with a metal shielding layer around it. The signal lines on both sides are used for signal transmission, and because they are on the same plane, the spare signal line is used in the middle Separated, the spare signal line is also made of copper conductor material, and also has the ability of signal shielding, so it can prevent crosstalk between the transmitted and received signals.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Example 1

As shown in Figure 1, a strong tensile and wear-resistant large drop rescue cable includes a cable core composed of a power line group, a control line group and a signal line group arranged in sequence from the inside to the outside, a tape 1 and an outer sheath 2. The power cord set includes three twisted power cords and a metal shielding layer 3 wrapped around it, and each power cord includes a copper conductor 4 and a polyvinyl chloride insulating layer 5 extruded outside it; The control wire group includes a wire group formed by twisting four control wires and a metal shielding layer 3 is wrapped around it, and each control wire includes a copper conductor 4 and a polyvinyl chloride insulating layer 5 extruded outside it; The above-mentioned signal wire group includes three signal wires arranged side by side and wrapped with a metal shielding layer 3, and each signal wire includes a conductor 6 formed by twisting a plurality of thin copper wires and extruded and wrapped around it. A high-density polyethylene insulating layer 7; a tensile filling layer 8 is set in the void of the cable core, and the tensile filling layer 8 is composed of a number of thin strands twisted by aramid fiber; wrapping around the cable core The strap 1 is bundled and the outer sheath 2 is extruded outside it.

The signal line is formed by twisting three strands of round copper wires and extruded with a high-density polyethylene insulating layer 7 .

The metal shielding layers 3 of the signal line group, power line group and control line group are all double-layer wrapped with aluminum-plastic tape for shielding, and the overlapping rate is not less than 50%.

The wrapping tape 1 is a polypropylene wrapping tape and adopts double-layer overlapping wrapping.

The tensile filling layer 8 is several fine strands twisted from poly-p-phenylene terephthalamide fibers and filled in the voids of the cable core.

The control line is formed by twisting three round copper wires and extruding the polyvinyl chloride layer 5 outside it.

The power cord is formed by twisting three strands of round copper wires and extruding the polyvinyl chloride layer 5 outside it.

The outer sheath 2 is a polyurethane outer sheath.

The signal lines on both sides constitute a transmission loop, and the signal line in the middle is a spare signal line.

Example 2

A strong-resistant, wear-resistant and large-drop rescue cable, comprising a cable core, a tape 1 and an outer sheath 2 composed of a power line group, a control line group, and a signal line group sequentially arranged from the inside to the outside; the power line group It includes a wire group formed by twisting four power wires and wrapping a metal shielding layer 3 outside it. Each power wire includes a copper conductor 4 and an extruded polyvinyl chloride insulation layer 5; the control wire group includes A wire group formed by twisting five control wires and wrapping a metal shielding layer 3 on the outside, each control wire includes a copper conductor 4 and an extruded polyvinyl chloride insulating layer 5; the signal wire group includes four A group of signal wires arranged side by side and wrapped with a metal shielding layer 3, each signal wire includes a conductor 6 twisted with multiple fine copper wires and high-density polyethylene extruded outside it An insulating layer 7; a tensile filling layer 8 is arranged in the void of the cable core, and the tensile filling layer 8 is composed of a number of fine strands twisted by aramid fibers; the cable core is wrapped around the wrapping tape 1 and bundled. Extrude the outer sheath 2 outside it.

The signal line is formed by twisting four strands of round copper wires and extruded with a high-density polyethylene insulating layer 7 .

The metal shielding layers of the signal wire group, the power wire group and the control wire group are double-wrapped and shielded with aluminum-plastic tape, and the overlapping rate is not less than 50%.

The wrapping tape 1 is a polypropylene wrapping tape and adopts double-layer overlapping wrapping.

The tensile filling layer 8 is several fine strands twisted from poly-p-phenylene terephthalamide fibers and filled in the voids of the cable core.

The control line is formed by twisting four strands of round copper wire and extruding the polyvinyl chloride layer 5 outside it.

The power cord is formed by twisting four strands of round copper wire and extruding the polyvinyl chloride layer 5 outside it.

The outer sheath 2 is a polyurethane outer sheath.

The signal lines on both sides constitute a transmission loop, and the two signal lines in the middle are spare signal lines.

The utility model provides a train of thought and method for a strong-resistant, wear-resistant and large-drop rescue cable. There are many methods and approaches for realizing the technical solution. The above is only a preferred embodiment of the utility model. It should be pointed out that for this Those of ordinary skill in the technical field can also make some improvements and modifications without departing from the principle of the utility model. Each component part can be realized with existing technology.

Claims (8)

1. one kind strong resistance to is drawn wear-resisting big drop to recover cable, it is characterised in that: include the power supply set gradually from inside to outside Line group, control line group and cable core, band and the oversheath of signal line group composition；Described source line group includes at least three electricity Line group that source line is stranded at its outer wrapped metal screen layer, every power line includes copper conductor and to extrude it outer poly- Vinyl chloride insulation layer；Described control line group includes the stranded line group of at least four control lines and at its outer wrapped metal screen Covering layer, every control line includes copper conductor and extrudes its outer polyvinyl chloride insulation layer；Described signal line group includes at least three Root holding wire is mutually juxtaposed the line group of arrangement and at its outer wrapped metal screen layer, and every holding wire includes many thin copper Conductor that skein silk closes and extrude its outer high density polyethylene (HDPE) insulating barrier；Arrange in the space of described cable core and bear filling Layer, described in bear packed layer be that some thin strand that aramid fiber is twisted into fills composition；Tie up at the outer wrapped band of cable core And extrude oversheath outside it.

The most according to claim 1 the most resistance to wear-resisting big drop is drawn to recover cable, it is characterised in that: described holding wire It is that at least three strands of circular copper wires are stranded form and outer extrude high density polyethylene (HDPE) insulating barrier in it.

The most according to claim 1 the most resistance to wear-resisting big drop is drawn to recover cable, it is characterised in that: described holding wire The metal screen layer of group, source line group and control line group is the double-deck wrapped shielding of aluminum plastic belt, and the rate of putting up is not less than 50%.

The most according to claim 1 the most resistance to wear-resisting big drop is drawn to recover cable, it is characterised in that: described band is Polypropylene twining package tape also uses double-layer overlapping wrapped.

The most according to claim 1 the most resistance to wear-resisting big drop is drawn to recover cable, it is characterised in that: bear packed layer In the some thin strand being twisted into for Fanglun 1414 the space being filled in cable core.

The most according to claim 1 the most resistance to draw wear-resisting big drop to recover cable, it is characterised in that: control line be to Few three strands of circular copper wires are stranded to be formed and extrudes polyvinyl chloride layer outside it.

The most according to claim 1 the most resistance to draw wear-resisting big drop to recover cable, it is characterised in that: power line be to Few three strands of circular copper wires are stranded to be formed and extrudes polyvinyl chloride layer outside it.

The most according to claim 1 the most resistance to wear-resisting big drop is drawn to recover cable, it is characterised in that: described oversheath For polyurethane oversheath.