KR101508228B1 - Cable lug joint forming device and method using electromagnetic force - Google Patents

Abstract

The present invention relates to a lug joint molding apparatus and a molding method using an electromagnetic force, and more particularly, to a lug joint molding apparatus and a molding method using an electromagnetic force capable of firmly coupling a wire rope and a lug of a steel material by using an electromagnetic force .

Description

Technical Field [0001] The present invention relates to a lug joint forming device and a molding method using an electromagnetic force,

The present invention relates to a lug joint molding apparatus and a molding method using an electromagnetic force, and more particularly, to a lug joint molding apparatus and a molding method using an electromagnetic force capable of firmly coupling a wire rope and a lug of a steel material by using an electromagnetic force .

BACKGROUND ART In general, wire ropes constitute a strand by twisting a plurality of metal wires and twine a plurality of strands to form a rope. They are widely used in various industrial fields for power transmission, weight support, saddle and the like And is used in all industries such as ships, machinery, aircraft, cranes, elevators, cable cars and bridges.

In addition, at the end of the wire rope, a plurality of metal wires and a plurality of strands are prevented from being loosened, and a lug which can be fixed to other accessories or other devices is formed. In addition, as a process of joining the wire rope and the lug, a swaging process is generally used, and a joining portion between the wire rope and the lug is called a lug joint.

Here, the swaging process is a kind of compression processing, in which a lug is bonded to an end portion of a wire rope and then a repetitive load is applied. However, when the wire rope and the lug are combined using the swaging process, the process takes a long time, environmental pollutants such as lubricant are generated, and a nonuniform section load is generated due to the machining error in the lug joint, .

Therefore, the molding process using the electromagnetic force has been researched and developed. In the molding process using the electromagnetic force, the molding material can be processed without physical contact by using the magnetic field generated in the coil and the molding material, Is very short, high productivity, and environmental pollutants such as lubricants are not required, which is an environmentally friendly molding technology. Further, the forming process using the electromagnetic force uses an electromagnetic pulse forming system composed of an electromagnetic force generating power supply device, a molded coil, and a Rogowsky Kick.

In addition, the electromagnetic force generation power source device is a power source device capable of charging and outputting high energy of 10 kv level. The molding coil generates electromagnetic force while instantaneously discharging high energy output from the electromagnetic force generation power source device, And the molding member is formed to mold the molding material into a specific shape by the generated electromagnetic force. The Rogowsky Koko is provided at a connection portion between the electromagnetic force generation power source device and the molding coil to measure an input current of the molding coil.

The field shaper may further include a field shaper disposed between the molding coil and the molding material to transmit an induction current to the molding material by an electromotive force when a current is discharged from the molding coil.

That is, by using a molding process using an electromagnetic force, the wire rope and the lug can be firmly coupled with each other with high productivity, environmental friendliness, and no physical contact.

On the other hand, in the conventional molding process using electromagnetic force, molding is performed efficiently only when the lug is made of a metal having a high electrical conductivity such as copper (Cu), and in the case of a steel material having a relatively low electrical conductivity, This was a difficult problem.

In order to use the wire rope for the purpose of power transmission or weight support, the lug must be made of a steel material. However, since the molding process using a conventional electromagnetic force can not form a lug of a steel material, Productivity and eco-friendliness, it has not been widely used.

The inventors of the present invention have made efforts to make a lug made of a steel material be coupled to a wire rope by using an electromagnetic force. As a result, they have developed a technical configuration of a lug joint molding apparatus and a molding method using an electromagnetic force, .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a lug joint molding apparatus and a molding method using an electromagnetic force that is firmly coupled even in the case of a steel material lug having low electric conductivity when a lug is coupled to a wire rope using an electromagnetic force.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, the present invention provides a lug joint forming apparatus for forming a lug joint, which is a joint part between a lug made of a steel material and a wire rope, comprising: a power supply unit for supplying power; A molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part; A magnetic flux concentrator which is disposed inside the molded coil part and has a central hole into which the lug and the wire rope are inserted to be formed to concentrate the electromagnetic force generated in the molded coil part into the lug and the wire rope; A conveying unit for conveying the lug and the wire rope to a center hole of the magnetic flux concentrating unit, respectively; And a reinforcing ring engaging portion that engages a reinforcing ring on an outer surface of the lug before the lug is transferred from the transfer portion to the center hole.

According to another aspect of the present invention, there is provided a lug joint forming apparatus for forming a lug joint, which is a joining portion between a lug made of a steel material and a wire rope, A first molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part; And a center hole disposed inside the first molded coil part and formed by inserting the lug and the wire rope, and a first hole for concentrating the electromagnetic force generated in the first molded coil part into the lug and the wire rope, Flux concentrating portion; A second molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part and re-forming a lug and a wire rope that are primarily molded in the first molded coil part; And a center hole into which the first molded lug and the wire rope are inserted, wherein the electromagnetic force generated in the second molded coil part is transmitted to the first molded lug and the wire rope A second magnetic flux concentrator for concentrating the magnetic flux; A transfer unit for transferring the lugs and the wire ropes to the center hole of the first magnetic flux concentrating unit or the second magnetic flux concentrating unit, respectively; And a reinforcing ring engaging portion that engages a reinforcing ring on an outer surface of the lug before the lug is transferred from the transfer portion to the center hole of the first magnetic flux concentrating portion.

According to another aspect of the present invention, there is provided a method of manufacturing a lug, comprising the steps of: forming a lug made of a steel material and a lug joint, which is a joint between wire ropes, using a molding coil for generating an electromagnetic force by discharging a power source supplied from the power supply unit; A reinforcing member made of a metal having a relatively high electrical conductivity as compared with the lug on the outer surface corresponding to the inner space, Joining the rings; Inserting the wire rope into the inner space and transferring the position of the reinforcing ring so as to be located inside the forming coil; Supplying power from the power supply unit to generate an electromagnetic force in the molding coil and causing an electromagnetic force generated in the molding coil to be applied to the reinforcing ring; And a step in which the reinforcing ring is formed by the electromagnetic force and presses an end of the lug and the end of the lug is formed by the pressing of the reinforcing ring.

In addition, the present invention provides a lug joint having a lug made of a steel material and a wire rope coupled with an external electromagnetic force, the lug having a shape formed by an electromagnetic force, A rope connection portion into which the wire rope is inserted into the inner space; And a reinforcing ring disposed on an outer surface of the rope connecting portion and formed by an electromagnetic force externally applied to press the rope connecting portion with a pressure generated at the time of forming to make a connection between the wire rope and the lug Provide a lug joint.

In a preferred embodiment, the forming coil portion is provided with a multi-turn coil.

In a preferred embodiment, the first molded coil part and the second formed coil part are provided as multi-turn coils.

In a preferred embodiment, the reinforcing ring is made of a metal having a higher electrical conductivity than the lug of the steel material

In a preferred embodiment, the reinforcing ring is made of copper.

In the present invention, the power supply unit supplies power; A molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part; A magnetic flux concentrator disposed inside the molded coil part and concentrating electromagnetic force generated in the molded coil part into the lug and the wire rope; And a reinforcing ring engaging portion for engaging a reinforcing ring on an outer surface of the lug before the lug is transferred from the transferring portion to the center hole. The lug joint forming apparatus according to claim 1, Wherein the magnetic flux concentrator includes a central hole formed by inserting the lug and the wire rope and is made of a metal material having high electric conductivity and strength, A lug joint forming apparatus characterized by forming a lug joint which is a joint part between a lug made of a material and a wire rope.
In the present invention, the forming coil unit is provided as a multi-turn coil, and the reinforcing ring is made of metal having a relatively high electrical conductivity as compared with the lug of the steel material. The power supply unit 110 and the molded coil part 120), the input current measuring unit (160) being provided as a Rogowski coil and measuring an input current inputted to the molded coil part (120) A joint molding apparatus is provided.
In the present invention, the power supply unit supplies power; A molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part; A magnetic flux concentrator disposed inside the molded coil part and concentrating electromagnetic force generated in the molded coil part into the lug and the wire rope; And a reinforcing ring engaging portion for engaging a reinforcing ring on an outer surface of the lug before the lug is transferred from the transferring portion to the center hole, the apparatus comprising: A first molded coil part for generating an electromagnetic force; And a center hole disposed inside the first molded coil part and formed by inserting the lug and the wire rope therein, and a center hole formed in the first molded coil part for concentrating the electromagnetic force generated in the first molded coil part into the lug and the wire rope A second molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part and re-forming a lug and a wire rope that are primarily molded in the first molded coil part; And a center hole for receiving the first molded lug and the wire rope are disposed inside the second molded coil part, and the electromagnetic force generated in the second molded coil part is connected to the first molded lug and the wire rope Wherein the magnetic flux concentrator comprises a second molding part including a second magnetic flux concentrating part for concentrating the lug and the wire rope to a center hole of the magnetic flux concentrating part, Characterized in that the lug joint is formed of a metal material having high electrical conductivity and strength and is formed of a steel material and a lug joint between the wire ropes, Lt; / RTI >
In the present invention, the first molded coil part and the second molded coil part are provided as multi-turn coils, and the reinforcing ring is made of a metal having a relatively higher electrical conductivity than the lug of the steel material, The input current measuring unit 160 for measuring the input current inputted to the molded coil part 120 is disposed at a connection part between the molded coil part 110 and the molded coil part 120, The present invention also provides a lug joint molding apparatus.
In the present invention, it is preferable that a steel lug and a wire rope having an empty space at one end are provided, and a reinforcing ring made of a metal having a relatively high electrical conductivity as compared with the lug, ; A feeding step of inserting the wire rope into the inner space and then feeding the position of the reinforcing ring so as to be located inside the forming coil; An electromagnetic force generating step of generating electromagnetic force in the forming coil by supplying power from the power supply unit and causing an electromagnetic force generated in the forming coil to be applied to the reinforcing ring; And a step in which the reinforcing ring is molded by the electromagnetic force and presses the end of the lug and the end of the lug is molded by the pressing of the reinforcing ring, The electromagnetic force generating step concentrates the electromagnetic force generated by the forming coil in the lug and the wire rope by the magnetic flux concentrating portion and the magnetic flux concentrating portion concentrates the electromagnetic force generated by the forming coil in the lug and the wire rope, And a central hole formed by inserting the lug and the wire rope, wherein the central hole is formed of a metal material having high electrical conductivity and strength, and includes a power supply unit for supplying power and a power supply unit for discharging the power supplied from the power supply unit, The generation of electromagnetic force caused by the steel lag and wire rope between the material It provides a method lug joints formed using an electromagnetic force, characterized in that for forming the hapbuin lug joints.
The present invention provides a method of forming a lug joint using an electromagnetic force, wherein the reinforcing ring is made of a copper material.
In the present invention, a lug joint, which is formed to be shaped by an electromagnetic force and to which a lug made of a steel material and a wire rope are coupled when an electromagnetic force is externally applied, A rope connection portion into which the wire rope is inserted into the inner space; And a reinforcing ring disposed on an outer surface of the rope connecting portion and formed by an electromagnetic force externally applied to press the rope connecting portion with a pressure generated in molding to cause a coupling between the wire rope and the lug, Wherein the magnetic flux concentrating portion concentrates the electromagnetic force generated in the forming coil by a magnetic flux concentrating portion in a lug and a wire rope in a joint, the flux concentrating portion has a central hole into which the lug and the wire rope are inserted to be molded, The electromagnetic force generated by discharging the power supplied from the power supply unit for supplying the power from the forming coil is concentrated by the magnetic flux concentrating unit into the lug and the wire rope of the steel material, Characterized in that a lug joint is formed, Provide a joint.
In the present invention, the reinforcing ring is made of a metal having a relatively higher electrical conductivity than the lug of the steel material, and the reinforcing ring is made of a copper material.

The present invention has the following excellent effects.

First, according to the apparatus and method for forming a lug joint using an electromagnetic force according to an embodiment of the present invention, since the reinforcing ring is formed of a metal having a relatively higher electrical conductivity than the lug and the reinforcing ring is formed by the electromagnetic force, It is possible to obtain an effect that molding can be performed by the reinforcing ring even when the lug is provided with a steel material having a low electrical conductivity.

Further, according to the apparatus and method for forming a lug joint using an electromagnetic force according to an embodiment of the present invention, it is possible to form lugs of various materials irrespective of the electrical conductivity of the lug, thereby achieving high productivity of the molding process using electromagnetic force, It is possible to obtain an advantage that the advantage can be utilized.

1 is a block diagram showing a lug joint molding apparatus according to an embodiment of the present invention;
2 is a block diagram showing a lug joint forming method according to an embodiment of the present invention;
Figures 3 to 4 illustrate lug joints according to an embodiment of the present invention.
5 is a block diagram showing a lug joint molding apparatus according to another embodiment of the present invention.

Although the terms used in the present invention have been selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, the meaning described or used in the detailed description part of the invention The meaning must be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

1 is a block diagram showing a lug joint molding apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a lug joint forming apparatus 100 according to an embodiment of the present invention is provided to form a lug joint, which is a coupling portion between a wire rope and a lug, using an electromagnetic force. Particularly, The lug is made of a steel material so as to be coupled with the wire rope. The lug is formed of a power supply part 110, a molded coil part 120, a magnetic flux concentrating part 130, a transfer part 140, (150) and an input current measuring unit (160).

The power supply unit 110 supplies power to the molded coil unit 120 to be described later. The power supply unit 110 is provided to charge and output a high power source of 5 kV to 10 kV, . Also, the power supply unit 110 may be provided with a capacitor having a large capacity for charging the power source.

The molded coil part 120 is for generating an electromagnetic force and may be provided to discharge power supplied from the power supply part 110 and may be provided as a multi turn coil wound preferably a plurality of times . In addition, an empty space is formed inside the formed coil part 120, and a magnetic flux concentrating part 130 to be described later is disposed in the empty space.

Further, the reinforcing ring to be described later is formed by the electromagnetic force generated in the molded coil part 120, and the reinforcing ring is molded to press the end of a lug or a rope connecting part to be described later to form a lug joint do.

The magnetic flux concentrating unit 130 concentrates the electromagnetic force generated in the molded coil part 120 to a specific position. When the high power is discharged from the molded coil part 120, the induced current is transmitted by the electromotive force And a metal material disposed in an inner space of the molded coil part 120 and having high electrical conductivity and strength.

In addition, the magnetic flux concentrating part 130 is formed in a cylindrical shape having a narrowed width from the outside toward the inside, and a center hole is provided at the center so that the lug and the wire rope can be inserted.

When the lug and the wire rope are inserted into the center hole, the magnetic flux concentrating unit 130 concentrates the electromagnetic force to a specific position of the reinforcing ring in a state where a reinforcing ring described later is fitted on the outer surface of the lug do.

When the current flows through the molded coil part 120, the magnetic flux concentrating part 130 applies a first induced current, which is opposite to the current of the formed coil part 120, on the outer surface of the magnetic flux concentrating part 130 And the first induction current induces a second induction current to be generated on the inner surface of the magnetic flux concentrator 130, the second induction current having an echo opposite to the first induction current, Inducing the generation of the third induction current in the direction opposite to the second induction current so that the molding is performed by the electromagnetic force which is the repulsive force between the currents flowing in the opposite directions.

The transfer unit 140 is provided to transfer the lug and the wire rope, and is configured to transfer the lug and the wire rope to the center hole of the magnetic flux concentrating unit 130 while fixing the lug and the wire rope.

The feeding unit 140 may be disposed at a predetermined distance from the forming coil unit 120 and may be moved forward, backward, leftward or rightward to feed the lug and the wire rope . It is preferable that a plurality of the transferring units 140 are provided, and each of the transferring units 140 is configured to transfer the lugs or the wire ropes.

In addition, the transfer unit 140 is electrically insulated from the molded coil unit 120, and is preferably electrically insulated from the lug and the wire rope.

The reinforcing ring engaging portion 150 is provided to engage the reinforcing ring with the lug and may be provided to engage the reinforcing ring with the lug before the lug is transferred from the conveying portion 140 to the center hole. have.

The reinforcing ring coupling part 150 is preferably disposed between the molded coil part 120 and the transfer part 140. Of course, it may be arranged at another position to couple the reinforcing ring to the lug.

On the other hand, the reinforcing ring is substantially pressed by an electromagnetic force, and may be made of a metal having a relatively higher electrical conductivity than the metal of the steel material. For example, the reinforcing ring may be made of copper or an alloy containing copper. Further, the reinforcing ring is provided so as to have a circular column shape in which the inside is hollow.

The input current measuring unit 160 measures an input current input to the molded coil unit 120 and is disposed at a connection portion between the power supply unit 110 and the molded coil unit 120, And may be equipped with a Rogowski coil.

2 is a block diagram showing a lug joint forming method according to an embodiment of the present invention.

Referring to FIG. 2, the method of forming a lug joint according to an embodiment of the present invention uses an electromagnetic force generated by a magnetic flux concentrator while a power supplied from a power supply unit is discharged from a molded coil, Thereby making it possible to mold a steel material having a relatively low electrical conductivity. In addition, the metal in the steel is an alloy containing iron and carbon, and can be utilized for power transmission or weight support because of its high strength. In other words, even when the wire rope and the lug are made of a steel material, the lug joint, which is the coupling portion between the lug and the wire rope, can be formed through the electromagnetic force and firmly coupled.

In the method of forming a lug joint according to an embodiment of the present invention, first, the lug and the reinforcing ring are combined with each other. At this time, the lug is made of steel metal, And the other end of the lug may be formed integrally with the one end or may be formed with a hole, a socket, or the like. Also, in the case of the wire rope to be joined with the lug, it is preferable that the metal is a steel material so that it can be used for power transmission or weight support.

Also, the reinforcing ring may be made of a metal having a relatively higher electrical conductivity than the metal of the steel material, for example, an alloy containing copper or copper. Further, the reinforcing ring is provided so as to have a circular column shape in which the inside is hollow.

Also, the reinforcing ring is coupled to an outer surface corresponding to the inner space of the lug, and the reinforcing ring is fitted and coupled to a specific position substantially to be formed in the lug. At this time, the joining process of the lug and the reinforcing ring may be performed using an automated facility equipped with a robot arm or an industrial robot (S100).

Next, the wire rope is inserted into the inner space of the lug, and then the wire rope is transferred to the inside of the forming coil. At this time, the reinforcing ring coupled to the outside of the lug is transported so as to be located inside the forming coil. Substantially, the reinforcing ring is conveyed to the inside of the flux concentrator located inside the forming coil.

Also, in the case of the transferring process of the lug, the wire rope and the reinforcing ring, an automated facility equipped with a robot arm or an industrial robot may be used (S200).

Next, an electromagnetic force is applied to the reinforcing ring, and a high power source of 5 kV to 10 kV charged in the power supply unit is supplied to the forming coil to induce an induced current in the flux concentrator located inside the forming coil and the forming coil , An electromagnetic force is generated while an induced current in the opposite direction flows in the reinforcing ring by an electromotive force.

At this time, the forming coil and the flux concentrator are not deformed, and the reinforcing ring is pressurized by the electromagnetic force, so that the reinforcing ring is compressed (S300).

Next, one end of the lug is formed into a lug joint by the reinforcing ring, wherein the lug joint means a joint portion between the lug and the wire rope.

The end of the wire rope inserted into the inner space of one end of the lug by pressing of the reinforcing ring and the end of the wire rope inserted into the inner space of the end of the lug are pressed against the end of the lug by being pressed by the electromagnetic force. And a connection is made between the one end portions. On the other hand, when the lug is provided with another material having low electrical conductivity besides the metal of the steel due to the provision of the reinforcing ring, the lug can be formed by using the electromagnetic force.

The electromagnetic force acting on the reinforcing ring is not concentrated only at a specific position or a specific portion but is uniformly applied to the reinforcing ring, and the joint between the reinforcing ring, the end of the wire rope and one end of the lug is rigid, (S400).

3 to 4 are views showing a lug joint according to an embodiment of the present invention.

3 to 4, a lug joint 200 according to an embodiment of the present invention is formed by a shape formed by an electromagnetic force and is formed as a joint portion between the lug 10 and the wire rope 20, Even if the lug 10 and the wire rope 20 are made of a metal of a high steel material and can be formed by the electromagnetic force and include the rope connecting portion 210 and the reinforcing ring 220.

Here, the steel metal means an alloy containing iron and carbon.

The lug joint 200 according to an embodiment of the present invention may also be manufactured using an electromagnetic pulse shaping system including a power supply, a molded coil, a Rogowski coil, and a magnetic flux concentrator, A power source is discharged from the molding coil and is formed by an electromagnetic force generated by the magnetic flux concentrator.

The rope connection part 210 may be formed at one end of the lug 10 and may be substantially formed integrally with the lug 10 as one end of the lug 10, An empty interior space is provided for insertion.

The reinforcing ring 220 is disposed outside the rope connecting portion 210 and is preferably fitted to the outer surface of the rope connecting portion 210 so as to be in close contact therewith, .

The reinforcing ring 220 may be made of a metal having a relatively high electrical conductivity as compared with the metal of the steel material. For example, the reinforcing ring 220 may be formed of gold, silver or copper. Of these, the strength is relatively high, It is preferable to provide low copper.

The reinforcing ring 220 is formed to be formed by an electromagnetic force externally applied and presses the rope connecting portion 210 with a pressure generated while being formed by the electromagnetic force, 10).

That is, the lug joint, which is the coupling portion between the wire rope 20 and the lug 10, is formed by the pressing of the reinforcing ring 220 formed by the electromagnetic force, and the electromagnetic force is uniformly applied to the reinforcing ring 220 So that the connection between the wire rope 20 and the lug 10 is strong and the bonding structure having a high internal density can be provided.

Also, the reinforcing ring 220 allows the molding using the electromagnetic force even when the lug 10 is made of other materials having low electric conductivity besides the metal of the steel material.

5 is a block diagram showing a lug joint molding apparatus according to another embodiment of the present invention.

5, the lug joint forming apparatus 300 according to another embodiment of the present invention is provided to form a lug joint, which is a coupling portion between a wire rope and a lug, using an electromagnetic force. In particular, A step of forming a lug made of a low steel material to join the wire rope and performing a multi-step molding process, and includes a power supply unit 310, a first molded coil part 320, A second molded coil portion 340, a second magnetic flux concentrating portion 350, a transfer portion 360, a reinforcing ring coupling portion 370, and an input current measuring portion 380.

The power supply unit 310 is provided to supply power to the first molded coil unit 320 and the second molded coil unit 340 to be described later and to charge and output a high power source of 5 kV to 10 kV.

Here, after the first molding of the lug and the wire is completed in the first molded coil part 320, which will be described later, with the high power charged in the power supply part 310, the second molded coil part 340, which will be described later, The power supply 310 is again provided to charge the high power supply when the molded lugs and wires are being transported. Therefore, the charging time of the high power source can be minimized in the multi-step molding of the lugs and wires. Also, the power supply unit 310 may be substantially the same as the power supply unit 110 according to an embodiment of the present invention.

The first molded coil part 320 may be provided to generate an electromagnetic force by discharging the power supplied from the power supply part 310. The first molded coil part 320 may be a multi- Respectively.

An empty space is formed inside the first molded coil part 320 and a first magnetic flux concentrating part 330 to be described later is disposed in the empty space. The first molded coil part 320 may be substantially the same as the formed coil part 120 according to an embodiment of the present invention.

The first magnetic flux concentrating unit 330 concentrates the electromagnetic force generated in the first molded coil unit 320 to a specific position and is disposed in an inner space of the first molded coil unit 320, And a metal material having high strength.

The center of the first magnetic flux concentrator 330 is provided with a center hole for inserting the lug and the wire rope, and the electromagnetic force is concentrated by the lug and the wire rope inserted in the center hole. However, since the lug is transferred to the center hole of the first magnetic flux concentrator 330 after the reinforcing ring to be described later is coupled, the electromagnetic force is concentrated by the reinforcing ring to be described later. In addition, the first magnetic flux concentrator 330 may be substantially the same as the magnetic flux concentrator 130 according to an embodiment of the present invention.

The second molded coil part 340 generates an electromagnetic force for reshaping the first molded lug and the wire rope in the first molded coil part 320, So as to generate an electromagnetic force.

The second molded coil part 340 is provided with a multi-turn coil in which a coil is wound a plurality of times, and a hollow space is formed inside the second molded coil part 340 so that a second magnetic flux concentrating part 350 to be described later can be disposed . Also, the second molded coil part 340 is formed so as to be more firmly coupled by applying an electromagnetic force to the primary molded lug and the wire rope.

The second magnetic flux concentrating unit 350 concentrates the electromagnetic force generated in the second molded coil part 340 on the first molded lug and the wire rope. And a central hole into which the primary molded lug and wire rope are inserted. Here, the second magnetic flux concentrating unit concentrates the electromagnetic force on the reinforcing ring of the primary molded lug.

The center hole of the second magnetic flux concentrating part 350 is formed to be relatively smaller than the center hole of the first magnetic flux concentrating part 330 so that the primary molded lug and the wire rope can be further pressed .

The transfer unit 360 is for transferring lugs and wire ropes to the center hole of the first magnetic flux concentrating unit 330 or the second magnetic flux concentrating unit 350, The first lug and the wire rope are transferred to the center hole of the second magnetic flux concentrator 350 after the primary molding is performed by transferring the lug and the wire rope to the center hole of the second magnetic flux concentrator 350. [

Further, the transfer unit 360 may be provided so as to be movable forward, backward, or leftward and rightward in a state where the lug and the wire rope are fixed.

The reinforcing ring engaging portion 370 is for engaging a reinforcing ring to the lug. When the lug is transferred from the conveying portion 360 to the center hole of the first magnetic flux concentrating portion 330, To the lug.

The reinforcing ring coupling portion 370 is preferably disposed between the first molded coil portion 320 and the transfer portion 360. Of course, the reinforcement ring may be coupled to the lug by being disposed at another position.

Here, the reinforcing ring is provided so as to be substantially pressed by an electromagnetic force, and may be formed of a metal having a relatively higher electrical conductivity than the metal of the steel material. For example, the reinforcing ring may be made of copper or an alloy containing copper . Further, the reinforcing ring is provided so as to have a circular column shape in which the inside is hollow.

The input current measuring unit 380 is for measuring an input current input to the first molded coil unit 320 and the second molded coil unit 340. The input current measuring unit 380 measures the input current inputted to the molded coil units 320 and 340 And the power supply unit 310, and is preferably provided as a Rogowski coil.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

110: power supply part 120: molded coil part
130 flux concentrator 140 feeder
150: reinforcing ring coupling part 160: input current measuring part
210: rope connecting portion 220: reinforcing ring

Claims (11)

A power supply unit for supplying power;
A molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part;
A magnetic flux concentrator disposed inside the molded coil part and concentrating the electromagnetic force generated in the molded coil part into a lug and a wire rope; And
And a reinforcing ring engaging portion that engages a reinforcing ring on an outer surface of the lug before the lug is transferred to the center hole of the magnetic flux concentrating portion,
Further comprising a transferring portion for transferring the lug and the wire rope to a center hole of the magnetic flux concentrating portion, respectively,
Wherein the magnetic flux concentrating portion has a center hole formed by inserting the lug and the wire rope as a metal material,
Characterized in that a lug joint which is a joint part between a lug made of a steel material and a wire rope is formed.
The method according to claim 1,
The molded coil portion is provided as a multi-turn coil,
Wherein the reinforcing ring is made of a metal having a relatively high electrical conductivity as compared with the lug of the steel material,
An input current measuring unit 120 disposed at a connection portion between the power supply unit 110 and the molded coil unit 120 and provided with a Rogowski coil for measuring an input current input to the molded coil unit 120, (160). ≪ / RTI >
delete A power supply unit for supplying power;
A molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part;
A magnetic flux concentrator disposed inside the molded coil part and concentrating the electromagnetic force generated in the molded coil part into a lug and a wire rope; And
And a reinforcing ring engaging portion that engages a reinforcing ring on an outer surface of the lug before the lug is transferred to the center hole of the magnetic flux concentrating portion,
A first molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part; And
And a center hole disposed inside the first molded coil part and formed by inserting the lug and the wire rope, and a first hole for concentrating the electromagnetic force generated in the first molded coil part into the lug and the wire rope, A primary casting portion including a magnetic flux concentrating portion,
A second molded coil part for generating an electromagnetic force by discharging the power supplied from the power supply part and re-forming a lug and a wire rope that are primarily molded in the first molded coil part; And
And a center hole into which the first molded lug and the wire rope are inserted, wherein the electromagnetic force generated in the second molded coil part is transmitted to the first molded lug and the wire rope And a second molding portion including a second magnetic flux concentrating portion for concentrating the second magnetic flux concentrating portion,
Further comprising a transferring portion for transferring the lug and the wire rope to a center hole of the magnetic flux concentrating portion, respectively,
Wherein the magnetic flux concentrating portion has a center hole formed by inserting the lug and the wire rope as a metal material,
Characterized in that a lug joint which is a joint part between a lug made of a steel material and a wire rope is formed.
5. The method of claim 4,
Wherein the first molded coil part and the second molded coil part are provided as multi-turn coils,
Wherein the reinforcing ring is made of a metal having a relatively high electrical conductivity as compared with the lug of the steel material,
An input current measuring unit 120 disposed at a connection portion between the power supply unit 110 and the molded coil unit 120 and provided with a Rogowski coil for measuring an input current input to the molded coil unit 120, (160). ≪ / RTI >
delete A step of preparing a lug and a wire rope made of a steel material having an empty space at one end and attaching a reinforcing ring made of a metal having a relatively high electrical conductivity to the outer surface corresponding to the inner space, ;
A feeding step of inserting the wire rope into the inner space and feeding the position of the reinforcing ring so that the position of the reinforcing ring is located inside the forming coil;
An electromagnetic force generating step of supplying an electric power to the forming coil to generate an electromagnetic force in the forming coil and causing an electromagnetic force generated in the forming coil to be applied to the reinforcing ring; And
Wherein the reinforcing ring is molded by the electromagnetic force and presses an end of the lug and the end of the lug is molded by the pressing of the reinforcing ring,
Wherein the feeding step includes feeding the lug and the wire rope to the center hole of the magnetic flux concentrating portion disposed inside the forming coil,
Wherein the electromagnetic force generating step concentrates the electromagnetic force generated in the forming coil by a magnetic flux concentrating portion into a lug and a wire rope,
Wherein the magnetic flux concentrating portion has a center hole formed by inserting the lug and the wire rope as a metal material,
Characterized in that a lug joint made up of a steel material and a lug joint which is a joint part between wire ropes is formed by an electromagnetic force generated by discharging a power supplied from a power supply part for supplying power from a molding coil, Way.
8. The method of claim 7,
Wherein the reinforcing ring is made of a copper material.
A lug joint having a lug made of a steel material and a wire rope combined with an electromagnetic force externally provided to be shaped by an electromagnetic force,
A rope connecting portion formed at one end of the lug and having an empty inner space, into which the wire rope is inserted; And
And a reinforcing ring disposed on an outer surface of the rope connecting portion and formed by an electromagnetic force externally applied to press the rope connecting portion with a pressure generated during molding so as to make a connection between the wire rope and the lug, In this case,
The electromagnetic force generated in the forming coil is concentrated by the magnetic flux concentrating portion to the lug and the wire rope,
Wherein the magnetic flux concentrating portion has a center hole formed by inserting the lug and the wire rope as a metal material,
The electromagnetic force generated by discharging the power supplied from the power supply unit for supplying power from the molding coil is concentrated by the magnetic flux concentrated portion to the lug and the wire rope of the steel material to form the lug joint which is the coupling portion between the lug and the wire rope Wherein the lug joint comprises:
10. The method of claim 9,
Wherein the reinforcing ring is made of a metal having a relatively high electrical conductivity as compared with the lug of the steel material,
Wherein the reinforcing ring is made of a copper material. delete

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