JP2003064977A - Electrode for crushing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crushing device electrode capable of easing impact resulting from discharge, in a simple structure. SOLUTION: The crushing device electrode 1 containing a conductive body acting as an electrode includes the electrode section 2 generating discharge, a flexible joint section 5 connected to the electrode section 2 and a connector section 6 connecting a power source cable 7 for supplying an electric current to the electrode section 2 through the flexible joint section 5 and the flexible joint section 5 in a detachable manner. Accordingly, since the impact resulting from discharge generating in the electrode section 2 can be absorbed by the flexible joint section 5, the damage in the connector section 6 caused by the impact can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushing device electrode, and more particularly to a crushing device electrode capable of preventing a failure due to an impact caused by crushing.

[0002]

2. Description of the Related Art Conventionally, as a method for crushing rocks,
After forming a pilot hole in rock or the like to be crushed, insert an electrode with electrolyte into the pilot hole, and supply a large current to this electrode to generate a discharge to form the pilot hole. It is known to crush rocks. As an electrode for a crushing device (hereinafter, also referred to as an electrode) used in such a crushing method, for example, Table 1
The electrode (probe device) disclosed in Japanese Patent Laid-Open No. 500799 is known.

The electrode disclosed in the above Japanese Patent Publication No. 11-500799 has a coaxial structure probe which is an electrode portion for generating a discharge, and absorbs and attenuates a shock received by the probe when the discharge is generated. Cylinder, coil, air piston and other shock absorbers. Electric current is supplied to the probe through a conductive wire.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention [Table 1]
In the electrode disclosed in Japanese Patent No. 0799, a shock absorber such as a cylinder or a coil is connected to the probe in order to absorb the shock caused by the electric discharge for crushing. This is because the shock caused by this discharge causes damage to the electrodes, and it is necessary to absorb the shock received by the electrodes by some means. However, when the shock absorber is installed on the electrode as described above, the structure of the electrode becomes complicated. As a result, the manufacturing cost of the electrode is increased, and maintenance of the electrode also requires time and effort.

Further, in the electrode disclosed in Japanese Patent Publication No. 11-500799, the probe has a coaxial structure having a center electrode and an outer peripheral electrode arranged around the center electrode. On the other hand, the wire for supplying a current to this probe is a wire having a non-coaxial structure, which is connected to each of the center electrode and the outer peripheral electrode. As described above, in the circuit that supplies the current from the power supply to the probe, since the non-coaxial structure wire and the coaxial structure probe are connected, the inductance changes greatly at this connection (inductance discontinuity). There will be points). Such a discontinuity of the inductance becomes a factor of lowering the efficiency in generating the discharge at the electrode.

The present invention has been made to solve the above problems, and one object of the present invention is to:
It is an object of the present invention to provide an electrode for a crushing device, which has a simple structure and can reduce the impact caused by discharge.

Another object of the present invention is to provide an electrode for a crushing device which can prevent a decrease in efficiency when generating an electric discharge.

[0008]

An electrode for a crushing device according to an aspect of the present invention includes an electric conductor that acts as an electrode, generates an electric discharge, and a flexible joint portion connected to the electrode portion. And a connector section for detachably connecting the power supply cable for supplying current to the electrode section through the flexible joint section and the flexible joint section.
It is preferable that the flexible joint portion and the electrode portion are fixed to each other.

With this structure, the flexible joint portion can absorb the shock caused by the electric discharge generated in the electrode portion, so that the connector portion can be prevented from being damaged by the shock.

Further, since the crushing device electrode according to the present invention described above has a relatively simple structure, the manufacturing cost can be reduced as compared with the conventional crushing device electrode provided with a shock absorber using a cylinder or the like. Further, the labor and time required for maintenance of the crushing device electrode can be reduced.

Further, since the discharge electrode portion composed of the electrode portion and the flexible joint portion and the power cable are detachably connected by the connector portion, only the discharge electrode portion is connected to the power cable in the actual crushing work. It is possible to separate it from and install it in any place in advance.
Therefore, the operability of the crushing device electrode can be improved.

In the crushing device electrode according to the first aspect, it is preferable that the flexible joint portion includes a joint conductor, and the conductor of the electrode portion and the joint conductor are fixed to each other by pressure bonding. .

In this case, since the electric conductor of the electrode portion and the joint electric conductor of the flexible joint portion are pressure-bonded and fixed to each other, the electric conductor and the joint electric conductor are connected to each other by the impact due to the discharge at the electrode portion. It is possible to suppress the occurrence of a problem that a gap is formed in the portion. Further, since a gap due to impact is not formed in the connecting portion between the conductor and the joint conductor, it is possible to reduce the possibility that the electrode portion and the flexible joint portion are damaged by the occurrence of discharge in this gap.

The crushing device electrode according to the above aspect 1 is
The conductor of the electrode portion and the joint conductor are arranged so as to surround the connection portion fixed by pressure bonding, and extend from the surface of the conductor to the surface of the joint conductor and the joint with the conductor. It is preferable to further include a fixing member fixed to the surface of the conductor.

In this case, the connecting portion between the conductor of the electrode portion and the joint conductor of the flexible joint portion can be reinforced by the fixing member. For this reason, it is possible to effectively suppress the occurrence of the problem that a gap is formed in the connection portion between the conductor and the joint conductor.

In the crushing device electrode according to the above aspect 1, the electrode portion, the flexible joint portion, and the power cable are:
It is preferable that both have a coaxial structure.

In this case, it is possible to suppress a large change in the inductance in the circuit from the power cable to the electrode portion (the discontinuity of the inductance in the circuit is not formed). Therefore, it is possible to prevent the efficiency at the time of generating the discharge from decreasing due to the presence of the discontinuity of the inductance.

An electrode for a crushing device according to another aspect of the present invention includes an electrode portion for generating a discharge and a power cable for supplying a current to the electrode portion, and one end portion of the power cable is fixed to the electrode portion. The power supply cable further includes a connector part provided in the middle of the power supply cable, and the connector part detachably connects the power supply cable part on the electrode part side of the connector part and the part of the power supply cable other than the power supply cable part. .

With this configuration, the power supply cable portion can absorb the shock caused by the discharge generated in the electrode portion (the power supply cable portion can be used as a shock absorbing member), so that the connector portion is damaged by the shock. You can prevent it from being received.

Further, since the crushing device electrode according to the present invention has a relatively simple structure, the manufacturing cost can be reduced as compared with the conventional crushing device electrode provided with a shock absorber using a cylinder or the like. Further, the labor and time required for maintenance of the crushing device electrode can be reduced.

Further, since the discharge electrode portion consisting of the electrode portion and the power cable portion and the portion other than the power cable portion are detachably connected by the connector portion, only the discharge electrode portion in the actual crushing work. It becomes possible to perform work such as separating and installing it in any place. Therefore, the operability of the crushing device electrode can be improved.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION The inventor has conducted various studies on an electrode for a crushing device for crushing rocks or the like using electric discharge, and has obtained the following findings. That is, for example, when a probe having a coaxial structure with a length of about 1 meter is used as a probe for generating a discharge, in order to connect a power source for supplying current to this probe and this probe, a certain length is required. You'll need a cable. Considering the operability of the electrodes at the crushing site, the length of this cable must be several tens of meters.

As an example of the structure of the crushing device electrode in which a cable is connected to the probe as described above, a structure as shown in FIG. 5 can be considered. FIG. 5 is a schematic view showing a crushing device electrode related to the present invention, and shows the crushing device electrode examined by the inventor in the process of completing the present invention.

Referring to FIG. 5, the crushing device electrode 101
Is a probe 102 that generates a discharge, and a probe 10.
Flange 103 installed on the upper part of 2 and flange 10
3 and the connector portion 106 located on the upper side. A cable 107 for power supply is connected to the connector section 106. The connector unit 106 includes the probe 102 and the cable 1.
07 is detachably connected. The cable 107 has a length of several tens of meters and is connected to a power source (not shown). The current supplied from the power supply via the cable 107 is supplied to the probe 102 via the connector unit 106. Although a general connection structure can be applied to the connector section 106, a current is supplied from the cable 107 to the probe 102 by bringing the conductor section of the cable 107 and the electrode section of the probe 102 into contact with each other. Both the probe 102 and the cable 107 have a coaxial structure. In this way, if both the cable 107 for power supply and the probe 102 have the coaxial structure, it is possible to suppress a large change in the inductance in the circuit from the power supply to the probe 102.

However, the crushing device electrode 10 shown in FIG.
In No. 1, a member that absorbs the shock caused by the discharge is not particularly arranged.

Therefore, when a discharge is generated in the probe 102, the shock generated by the discharge is directly applied to the probe 102 and the connector section 106. Due to such an impact, the connector 102 causes the probe 102 to
In the detachable connection portion between the cable 107 and the cable 107, a gap may be formed due to the relative displacement between the probe 102 and the cable 107.

When current is supplied to the probe 102 from the cable 107 with such a gap formed,
Electric discharge occurs in this gap. This discharge may damage the probe 102 and the cable 107. Then, each time a current is supplied to the probe 102 to generate a discharge in the probe 102, a discharge is also generated in this gap. Therefore, the probe 102 and the cable 10
7 is damaged and eroded at each discharge, and is worn away. As a result, the above-mentioned gap becomes larger, so that discharge is generated again in this gap. in this way,
The formation of a gap, the occurrence of discharge in the gap, the damage and abrasion of the probe 102, etc. due to the discharge, the enlargement of the gap,
Damage / deterioration of the electrode 101 is accelerated.

It is also conceivable that, after a part of the metal member such as the probe 102 is vaporized by the discharge, the vaporized metal is solidified and adhered to the surface of the insulator forming the connector portion 106 and the like. When such metal solidification / adhesion occurs, the characteristics of the insulator deteriorate. Therefore, also in this case, the electrode 101 is damaged or deteriorated.

In order to prevent such damage / deterioration of the electrode 101, it is necessary to take a measure to absorb the shock caused by the electric discharge.
It is not preferable to use the shock absorber disclosed in the publication because the device configuration of the electrode 101 becomes complicated.
Therefore, as a result of studying the configuration of various electrodes, the inventor found that if the connecting portion between the probe 102 and the cable 107 is made into a crimping structure so that it cannot be attached and detached, the probe 102 and the cable 107 will have a space between the probe 102 and the cable 107 due to a shock. It has been found that it is possible to prevent the formation of gaps. In this way, since no gap is formed, discharge does not occur in this gap.

On the other hand, the electrode 101 in the actual crushing work
Considering the operability of the probe 102 and the cable 107
Is preferably removable. Therefore, the inventor of the present invention has a portion including the probe 102 and a portion not including the probe 102 (a portion on the power supply side) in the middle of the cable 107.
The invention has devised a structure in which a connecting portion for detachably connecting and is formed. With this configuration, the probe 102 and the cable extending from the power source can be attached to and detached from each other.
The operability of No. 1 can be kept good. Also, due to the cable portion between the probe 102 and the connection portion,
It was also found that since the shock caused by the discharge is absorbed, it is possible to prevent the shock from directly acting on the connection portion.

An embodiment of the present invention based on the above-mentioned inventor's knowledge will be described below with reference to the drawings. In addition,
In the following drawings, the same or corresponding parts are designated by the same reference numerals, and the description thereof will not be repeated.

FIG. 1 is a schematic view showing an electrode device according to the present invention. FIG. 2 is a schematic partial cross-sectional view of a crimping portion of the electrode device shown in FIG. An embodiment of an electrode device according to the present invention will be described with reference to FIGS. 1 and 2.

With reference to FIGS. 1 and 2, an electrode device 1 as an electrode for a crushing device according to the present invention has a probe 2 as an electrode portion for generating a discharge, and a power source for supplying electric power to the probe 2. A flexible cable 7 as a cable and a connecting portion 8 for electrically connecting the cable 7 and the probe 2 are provided. The connecting portion 8 is
A flexible joint 5 connected to one end of the probe 2 via a crimping section 4 or a flexible cable 5 as a power cable portion, and a connector for detachably connecting the cable 5 and the cable 7. And part 6. In the probe 2, a flange 3 made of a conductor is formed so as to be adjacent to the crimp portion 4. The probe 2 and the cables 5 and 7 each have a coaxial structure.

That is, the probe 2 includes the center electrode 11 as a conductor, the insulator 10 arranged on the outer peripheral surface of the center electrode 11, and the outer peripheral electrode 9 arranged on the outer peripheral surface of the insulator 10. With. In addition, the cable 5 includes a central conductor 18 as a joint conductor, an insulating layer 17 arranged on the outer peripheral surface of the central conductor 18, and an insulating layer 1.
7 and an insulating coating film 16 arranged on the outer peripheral surface of the outer peripheral conductor 15.

As shown in FIG. 2, in the crimp portion 4,
The center electrode 11 as the conductor of the probe 2 and the center conductor 18 as the joint conductor of the cable 5 are pressure-bonded to each other at the joint surface 19. Further, a crimp sleeve 20 as a fixing member is arranged so as to surround the joint surface 19 as the connecting portion. The pressure-bonding sleeve 20 is made of a conductor, and the center electrode 11 and the center conductor 1 are held so that the center electrode 11 and the center conductor 18 are kept in a pressure-bonded state.
8 and 8 are fixed. That is, the crimp sleeve 20 is
It extends from the surface of the center electrode 11 to the surface of the center conductor 18, and is fixed to the surfaces of the center electrode 11 and the center conductor 18.

At the joint between the probe 2 and the cable 5, the center electrode 11 and the center conductor 18 are exposed as shown in FIG. Then, after fixing the joint portion with the crimp sleeve 20, the crimp portion insulator 21 is arranged so as to cover the crimp sleeve 20. The crimp portion insulator 21 may be formed by winding a tape made of an insulating resin or the like around the outer peripheral surface of the crimp sleeve 20.

At one end of the probe 2 connected to the cable 5, a conductor block 12 is arranged on the outer peripheral surface of the end of the outer peripheral electrode 9. The conductor block 12 has a so-called donut shape. As can be seen from FIG. 2, the probe 2 is in a state of being inserted into the opening on the inner peripheral side of the conductor block 12. And
The inner peripheral surface of the conductor block 12 (side wall of the opening on the inner collecting side) is in contact with the outer peripheral surface of the outer peripheral electrode 9 of the probe 2. The flange 3 is arranged so as to be adjacent to the conductor block 12.

On the other hand, in the cable 5, the probe 2
Part of the outer peripheral conductor 15 is exposed by partially removing the insulating coating film 16 at one end portion connected to. Then, the conductor block 14 is disposed on the exposed outer peripheral surface of the outer peripheral conductor 15.
Like the conductor block 12, the conductor block 14 has a so-called donut-shaped outer shape. Conductor block 1
The cable 5 is inserted into the opening on the inner peripheral side of the cable 4. The inner peripheral surface of the conductor block 14 and the outer peripheral surface of the outer conductor 15 of the cable 5 are connected.

A cylindrical joint protection portion 13 made of a conductor is arranged so as to be connected to both outer peripheral surfaces of the conductor blocks 12 and 14. The joint protector 13 is electrically connected to the conductor blocks 12 and 14, respectively.

In this way, the central conductor 18 of the cable 5 is electrically connected to the central electrode 11 of the probe 2 via the joint surface 19 or the crimp sleeve 20. Further, the outer peripheral conductor 15 of the cable 5 and the outer peripheral electrode 9 of the probe 2 are electrically connected to each other via the conductor block 12, the joint protection portion 13 made of a conductor, and the conductor block 14.

The cable 5 and the cable 7 are electrically connected to each other by a detachable connector section 6. The cable 7 basically has the same structure as the cable 5. As the structure of the connector portion 6, a general connector structure can be appropriately used. Both cables 5 and 7 can be regarded as power cables. The connector section 6 is regarded as detachably connecting the cable 5 as the power cable section on the probe 2 side from the connector section 6 in the power cable and the cable 7 other than the cable 5 in the power cable. You can

When crushing is performed using the electrode device 1 as shown in FIGS. 1 and 2, when plasma for crushing is generated at the tip of the probe 2 or the like, the probe 2 is impacted by the generation of this plasma. The device itself receives a large stress (impact) toward the cable 7 side. At this time,
The probe 2 and the cable 5 are fixed by a crimping structure as shown in FIG. Further, the connection portion between the probe 2 and the cable 5 is reinforced by the crimping sleeve 20. Therefore, even if a shock is applied to the electrode device 1 when a discharge is generated, no gap is formed between the cable 5 and the probe 2. That is, when the connecting portion between the cable 5 and the probe 2 is an ordinary detachable connector or the like, a gap may be formed between the cable 5 and the probe 2 due to this impact. In the illustrated electrode device 1 according to the present invention, formation of such a gap can be prevented. Therefore, it is possible to prevent the probe 2 and the cable 5 from being damaged by the occurrence of discharge in such a gap.

When the probe 2 receives a large impact in the direction of the cable 7 and the position of the probe 2 moves,
By appropriately deforming the flexible cable 5,
This shock is absorbed. Therefore, the impact received by the probe 2 can be prevented from being transmitted to the connector portion 6. Therefore, due to the impact received by the probe 2, the connector portion 6
It is possible to prevent a gap from being formed in the connection portion between the cable 5 and the cable 7 in FIG. As a result,
Since no discharge is generated in the gap, it is possible to prevent the connector portion 6 from being damaged by this discharge.

Also, the electrode device 1 shown in FIGS.
Since has a relatively simple structure, the manufacturing cost can be reduced as compared with the conventional case where a shock absorber using a cylinder or the like is provided. Further, the labor and time required for the maintenance of the electrode device 1 can be reduced.

Further, since the probe 2 and the cable 7 can be separated at the connector portion 6, the operability of the electrode device 1 at the crushing site can be improved.

As the structure of the electrode device 1, for example, when the length of the probe 2 is about 1 meter, a cable having a length of 1 meter or more may be used as the cable 5. The length of the cable 7 connected via the connector 6 is not particularly limited, and a cable having a length of several tens of meters may be used.

Further, the probe 2 has a tip portion (cable 5
Although the discharge may be generated between the center electrode 11 and the outer peripheral electrode 9 at the end located on the side opposite to the end connected to the outer peripheral electrode, the outer peripheral electrode may be arranged in the extending direction of the probe 2. 9 may be divided into a plurality of outer peripheral electrode portions, and then the plurality of outer peripheral electrode portions may be arranged at intervals. In this case, discharge can be generated between the plurality of outer peripheral electrode portions.

The pressure-bonding part insulator 21 shown in FIG. 2 is formed by winding an insulating tape around the outer peripheral surface of the pressure-bonding sleeve 20, but an insulating resin such as an epoxy resin is used. You may mold so that the outer peripheral surface of the crimping sleeve 20 may be covered.

As the joint protection portion 13, a cylindrical pipe made of a conductor may be used. This pipe may be integrally molded, or a pipe divided into a plurality of parts along the long axis direction of the pipe may be used. The joint protection portion 13 has a function of electrically connecting the conductor blocks 12 and 14 and a function of protecting the joint portion between the center electrode 11 and the center conductor 18.

In the electrode device 1 shown in FIGS. 1 and 2, the probe 2 and the cables 5 and 7 have the same coaxial structure. Therefore, when the current is supplied from the power source to the probe 2 via the cables 7 and 5, the structures of the members constituting the circuit of the current path are all coaxial. Therefore, the inductance in the circuit from the power source to the probe 2 does not change significantly, and no electrical discontinuity is formed. Therefore, the inductance in the circuit from this power supply to the probe 2 can be reduced. As a result, the same amount of power is applied to the probe 2.
In the case of being supplied to, the crushing force in the probe 2 can be further increased.

When the inductance of the other parts constituting the electrode device 1 is sufficiently small, the inductance of the entire electrode device 1 may be sufficiently small without intentionally forming a coaxial structure in this part. In this case, it is not necessary to make the cables 5 and 7 coaxial. As described above, the structures of the probe 2, the cables 5 and 7, and the like can be appropriately selected according to the application and use conditions.

Further, although the conductor is used as the material of the flange 3, the flange 3 may be formed of an insulator. In this case, a through hole may be formed in the flange 3 and a wire or the like may be passed through the through hole to connect the wire to the arm of the crane. With this configuration, the probe 2 of the electrode device 1 can be easily operated by operating the crane.

The flange 3 can be used as a fulcrum for supporting the impact of the discharge on the probe 2. In this case, it is not necessary to provide a shock absorbing mechanism or the like for the flange 3.

FIG. 3 is a schematic partial sectional view showing a modification of the electrode device shown in FIGS. FIG. 3 corresponds to FIG. FIG. 4 is a schematic sectional view taken along the line IV-IV in FIG. A modified example of the embodiment of the crushing apparatus according to the present invention will be described with reference to FIGS. 3 and 4.

Referring to FIGS. 3 and 4, the electrode device 1 basically has the same structure as the electrode device 1 shown in FIGS. 1 and 2, but is arranged on the outer peripheral surface of the crimping sleeve 20 at the crimping portion 4. The structure of the formed insulator is different. That is, on the outer peripheral surface of the crimp sleeve 20, the cylindrical inner peripheral insulator 22 is arranged so as to surround the crimp sleeve 20. A cylindrical outer peripheral insulator 2 is formed on the outer peripheral surface of the inner peripheral insulator 22.
3 are arranged.

The inner peripheral insulator 22 and the outer peripheral insulator 23 are
As can be seen from FIG. 4, it is divided into two along its extending axis. That is, the inner peripheral insulator 22 is composed of inner peripheral insulator portions 22a and 22b having a semicircular cross section. Further, the outer peripheral insulator 23 has a semicircular cross-section.
It consists of a and 23b. To surround the crimp sleeve 20,
The inner peripheral insulator portion 22a and the inner peripheral insulator portion 22b are connected at the joint surface 24. Then, on the outer peripheral surface of the inner peripheral insulator 22, the outer peripheral insulator portions 23a, 2
3b are connected at the joint surface 25. The position of the joint surface 25 of the outer peripheral insulator portions 23a and 23b and the position of the joint surface 24 of the inner peripheral insulator portions 22a and 22b are arranged at positions displaced from each other in the circumferential direction when viewed from the center of the center electrode 11. ing. When viewed from the center of the center electrode 11, the joint surface 24
It is preferable that the angle formed by and the joining surface 25 is about 90 °.

As described above, by using the double-structured insulator of the inner circumference insulator 22 and the outer circumference insulator 23, the insulation between the center electrode 11 and the outer circumference electrode 9 can be performed more reliably.

It should be considered that the embodiments disclosed this time are exemplifications in all points and not restrictive. The scope of the present invention is shown not by the above-described embodiments but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

[0059]

As described above, according to the present invention, by arranging the flexible joint portion between the electrode portion and the power cable in the crushing device electrode, the electrode due to the impact due to the discharge can be formed with a simple structure. It is possible to prevent damage.

[Brief description of drawings]

FIG. 1 is a schematic view showing an electrode device according to the present invention.

2 is a schematic partial cross-sectional view of a crimping portion of the electrode device shown in FIG.

FIG. 3 is a partial cross-sectional schematic view showing a modified example of the electrode device shown in FIGS. 1 and 2.

FIG. 4 is a schematic sectional view taken along the line IV-IV in FIG.

FIG. 5 is a schematic diagram showing an electrode for a crushing device related to the present invention.

[Explanation of symbols]

1 electrode device, 2 probe, 3 flange, 4 crimping part, 5 cable, 6,7 connector part, 8 connecting part,
9 outer peripheral electrode, 10 insulator, 11 center electrode, 12,
14 Conductor block, 13 Joint protector, 15
Peripheral conductor, 16 insulating coating film, 17 insulating layer, 18
Central conductor, 19, 24, 25 Joint surface, 20 Crimping sleeve, 21 Crimping part insulator, 22 Inner circumference insulator, 2
2a, 22b inner peripheral insulator part, 23 outer peripheral insulator, 2
3a, 23b Peripheral insulator part.

Claims (5)

[Claims] 1. An electrode section including a conductor acting as an electrode to generate a discharge, a flexible joint section connected to the electrode section, and a current flowing through the electrode section via the flexible joint section. An electrode for a crushing device, comprising a power supply cable for supplying the power and a connector portion that detachably connects the flexible joint portion. 2. The crushing device according to claim 1, wherein the flexible joint portion includes a joint conductor, and the conductor of the electrode portion and the joint conductor are fixed by being pressure-bonded to each other. Electrodes. 3. The conductor of the electrode portion and the joint conductor are arranged so as to surround a connection portion fixed by crimping, and are arranged from the surface of the conductor to the surface of the joint conductor. The crushing device electrode according to claim 2, further comprising a fixing member that extends up to and is fixed to the surfaces of the conductor and the joint conductor. 4. The crushing device electrode according to claim 1, wherein the electrode portion, the flexible joint portion, and the power cable all have a coaxial structure. 5. An electrode part for generating a discharge, and a power cable for supplying a current to the electrode part, wherein one end of the power cable is fixed to the electrode part.
Further, the power supply cable includes a connector part provided in the middle thereof, and the connector part is capable of attaching and detaching a power supply cable part on the electrode part side from the connector part and a part of the power supply cable other than the power supply cable part. An electrode for a crushing device that is connected to.