Method for manufacturing multi-wire current-conductive cable or rope

FIELD: cable or rope manufacturing industry, possible use for producing flexible current-conductive wires of ropes.

SUBSTANCE: proposed method for laying multi-wire current-conductive wire is performed in accordance to system m x (n x d), where m -number of strands in lay of cable or rope; n - number of wires in each strand; d - diameter of elementary wire. For realization of aforementioned laying system in m giving devices of spinning machines of hoop or cigar type coils are mounted with clusters of n wires on each coil, while output of wire from giving devices to frames or rotor of machines is performed in direction, opposite to movement of cable template. Cluster with n wires during movement from giving coil onto rotating frame is laid with step h=v/w, where v - linear speed of pulling device, m/min, w - turns of frame, 1/min. during displacement from the frame into caliber, strand is also laid for step h in the same direction. Therefore, at output direction of lay is produced which matches direction of lay of strand and step of lay of wires in strand is averagely twice less than step of lay of strands in the lay.

EFFECT: possible laying of multi-wire cable products, providing for simultaneous laying of strands and laying of cable or rope using said strands.

5 cl

 

The invention relates to a cable or the cable industry and is intended for the manufacture of flexible conductive wires or ropes.

In the manufacture of cables of class 3 and above and ropes to ensure the necessary flexibility of the product applied twisting of the number of elementary thin wires.

Requirements as to the number and nominal diameter of elementary wires for cable products increased flexibility provided in the Technical reference "Cables, wires and materials for the cable industry", Kotenev V.Y., Krekova O. - M.: Publishing house "Oil and gas", 1999.

With a large number of elementary wires in the finished product manufacture conductive core of the cable and the rope is held for several technological operations, i.e. pre-rolled billet of elementary wires (strands), and then the strands are twisted in the finished product, and the technological operation of the twisting of the strands and twisting of the cable or rope, usually held on different technological equipment.

The main equipment for the manufacture of conductive wires are listed in the "Catalogue of technical equipment import and domestic production for the manufacture of cable products", Moscow, 1990. For example, in accordance with the directory for twisting strands used machines double the twist, and subsequent twisting of the strands in the cable is manufactured on machines cigar, rope or lamp types.

The aim of the invention is a method of twisting the stranded cable products, providing simultaneous twisting of the strands and the strands in the cable or rope. The technical result of the invention it will reduce a single operation and, accordingly, the time of manufacturing of cable or rope products.

The proposed method for twisting wire the conductors shown in figure 1, is performed according to the system of m×n×d), where

m is the number of strands in povile wire, cable or rope;

n is the number of wires in each strand;

d is the diameter of the elementary wire.

The cross-section of the finished cable product is shown in figure 1, where 1 is the elementary wire, 2 - strand of the elementary wires, while in the case m=7, n=19.

Pictures rope the machine to perform the operation of twisting is shown in figure 2 and figure 3. Figure 4 shows a photograph of a cigar machine type.

Appearance tow machine for execution of the specified system twisting is shown in figure 5, where 3 - radiating device, 4 - rotating frame, 5 - output caliber, 6 - pulling device 7 to the receiving device. Arrow 8 shows the movement of the cable of the workpiece 9

To implement this system twisting in m a giver devices 3 installing coil 10 with a bundle of n wires on each coil, and the output wire from radiating coils 10 on the frame 4 is carried out in a direction opposite to movement of the cable of the workpiece 9. A beam with n wires when driving with the giver of the coil on the rotating frame is twisted with a step h=v/w, where

v is the linear speed of the traction device, m/min,

w - momentum frame, 1/min

When leaving the frame in the caliber strand also twisted at step h in the same direction. Thus, get the direction of twisting of Posiva coincident with the direction of twisting of the strands, and the pitch of the wires in the strand is in average two times less than the pitch of the strands in povile.

The proposed method can significantly reduce the time in the manufacture of flexible wires, especially given the wide distribution multiwire machines with a combined annealing, the final product of which is a coil with a bundle of wires, the number of which is adjusted by an operator. The currently used technology of manufacturing cable products allows you to make flexible stranded cable for two operations: manufacturing of strands (usually on machines double twisting) and subsequent twisting of the strands in povel (on lelevich, rope, cigar or machines, double twist). This technology is associated primarily with the fact that, traditionally for wire drawing was applied to single machine, thus twisting wires in the strand was performed with multiple coils on one selection.

Traditional filling machines (output wire from radiating coil in the course of the machine) does not allow to obtain at the output of twisted strands, since the bundle of wires at the entrance to the rotating frame and off also gets a twist with step h, but these torsion springs have opposite directions and cancel each other, therefore, the output of the machine turns out a bunch of wires, such wires on giving the coil.

When schema changes are fuelling machine (output wire with the giver of the drum (1) progress against the machine) wire at the entrance to the rotating part of the tow frame is twisted to the right (left)at the entrance to the stationary node twisting wires are also twisted to the right (left) and output of their machine gets double twist.

It is also possible installation in giving the device a few coils with a total number of wires equal to n.

The proposed method of twisting the wires of the class 3 and above can easily be implemented when changing direction of the output wires radiating devices for machines cigar type when alum is making conductive wires and cables, of wire or synthetic threads.

1. A method of manufacturing a stranded conductive core, or rope, wherein the one technological operation, simultaneously making the twisted n elementary wires in the strand, for which the bundle of wires in the number n of pieces placed on the coils in m a giver devices cigar or rope machines, the output wire from radiating devices on the rotor or frame of the machine is carried out in a direction opposite to movement of the cable or rope of the workpiece, and strand braid conductive core of the wire, cable or rope on the output of the machine system m×n×d), where m is the number of strands in povile wire, cable or rope; n is the number of wires in each strand; d - the diameter of the elementary wire at the output of get the direction of twisting of Posiva coincident with the direction of twisting of the strands and the pitch of the wires in the strand 30-75% of the pitch of the strands in povile.

2. The method according to claim 1, characterized in that the wire on giving coils or drums get on the multi-machine drawing by winding the bundle of n elementary wires or radiating device install multiple coils with a total number of wires equal to n.

3. The method according to claim 2, characterized in that the number of elementary wires on each individual radiating device can be different



 

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Electric cable // 2256969

FIELD: electrical engineering; electric cables for signaling, control, and data transfer and processing systems.

SUBSTANCE: cable has at least one pair of insulated and stranded current-carrying conductors and cable sheath. Insulating material is either halogen-containing polymer (polyvinyl chloride), or halogen-free polyolefin base material (polyethylene), or its copolymer. Insulation thickness is chosen from equation strand pitch is found from equation h = 25(2Δ + d), where d is conductor diameter; εr is relative dielectric constant of insulating material. With diameter of cable current-carrying conductors being enlarged, capacitance of cable pair was reduced (other characteristics being retained at desired level.

EFFECT: enhanced capacitance of working load on cable pair.

1 cl, 4 dwg, 1 tbl

FIELD: cable or rope manufacturing industry, possible use for producing flexible current-conductive wires of ropes.

SUBSTANCE: proposed method for laying multi-wire current-conductive wire is performed in accordance to system m x (n x d), where m -number of strands in lay of cable or rope; n - number of wires in each strand; d - diameter of elementary wire. For realization of aforementioned laying system in m giving devices of spinning machines of hoop or cigar type coils are mounted with clusters of n wires on each coil, while output of wire from giving devices to frames or rotor of machines is performed in direction, opposite to movement of cable template. Cluster with n wires during movement from giving coil onto rotating frame is laid with step h=v/w, where v - linear speed of pulling device, m/min, w - turns of frame, 1/min. during displacement from the frame into caliber, strand is also laid for step h in the same direction. Therefore, at output direction of lay is produced which matches direction of lay of strand and step of lay of wires in strand is averagely twice less than step of lay of strands in the lay.

EFFECT: possible laying of multi-wire cable products, providing for simultaneous laying of strands and laying of cable or rope using said strands.

5 cl

FIELD: electrical engineering including cable engineering; midget control cables for wire communication lines of small-size missiles and their manufacturing process.

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EFFECT: improved electrical and mechanical characteristics, ability of using cable immersed in water including sea water.

2 cl, 3 dwg

FIELD: electrical engineering including cable engineering; midget control cables for wire communication lines of small-size missiles and their manufacturing process.

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EFFECT: improved electrical and mechanical characteristics, ability of using cable immersed in water including sea water.

2 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: in the known method including cable wires ends fixing to receiving device, their subsequent drawing with concurrent wires twisting around core, the new consists in cable wires ends fixing to receiving device using terminal in which wires are pressed together with cable core, and wires twisting around core is executed by disk rotation at angular velocity that is found from empiric formula. To implement declared method for twisting wires of water-cooled cable device is offered which in contrast to known device for manufacturing additionally contains table and press for squeezing cable terminals. It is reasonable to insert short tubes in peripheral holes of disks. Suggested device allows to fabricate cables of definite length with embedding wires into terminals, at that effective wire twisting is performed taking in consideration various cable psrsmeters. Tubes installed in disks prevent wire damage during drawing.

EFFECT: widening of technical facilities arsenal, method and device for manufacturing cables of definite length with regard to required parameters and quality improvement.

3 cl, 2 dwg, 1 tbl

FIELD: electric engineering.

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EFFECT: core makes it possible to improve throughput capacity, to provide for minimum sagging of overhead wire of power transmission line and to reduce loads at power transmission line supports.

18 cl, 5 dwg, 2 ex

FIELD: electricity.

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29 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: invention is designed for use, for instance, in electric wiring of transport facilities and relates to a method of production of a wire (11) from several strands (12), arranged from an electroconductive material, in which strands are pulled as cold to give them their final diameter on at least one single or multiple-block drawing machine (19, 28) or a pulling unit during the last stage of drawing prior to coiling, as a result of which each strand (12) has a tensile strength of at least 300 N/mm2, besides further these cold-drawn strands (12) or a combination of cold-drawn strands (12) and annealed strands is wound into a wire (11) on a stranding machine (21), not exposing it to annealing. Also the invention relates to a wire manufactured with the specified method.

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10 cl, 7 dwg

FIELD: electricity.

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2 cl, 7 dwg

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EFFECT: higher resilience at cyclic flexure and twisting in operation.

2 cl, 3 dwg

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