JPH10306679A - Electric crusher and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly crush the whole excavation face by discharge energy by cyclically impressing high voltage through a switch means for a number of electrode pairs disposed on the whole face of an excavation head in prescribed order and prescribed intervals. SOLUTION: The front face of the semi-circular excavation head 61A of a non-circular cross section underground excavator is divided into a number of fan-shaped partitions 63A, a first electrode is provided on the outer peripheral wall part of each fan-shaped partition and a second electrode is provided on the center part. The first electrode is integrally formed by a metal-made electrode or electrically connected to be grounded. The front face space of the excavation head 61A is filled with solution, and a switch means is turned on or off by a controller constituted of a microcomputer, a semiconductor logic circuit and the like in the prescribed order and prescribed intervals to cyclically impress high voltage on the second electrode so as to crush rock by discharge energy. In addition, high voltage may be impressed on individual electrode pair by insulating the first electrodes. Thereby a high voltage power source is miniaturized and the whole excavation face can be uniformly crushed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric crushing apparatus for applying a high voltage between electrodes to discharge electricity to crush rock or the like, and more particularly, to an electric crusher in which a large number of electrodes are densely provided on the entire surface of a drilling head. The present invention relates to a method for applying a high voltage to an electrode of a crusher.

[0002]

2. Description of the Related Art Conventionally, a crushing method (hereinafter referred to as electro-crushing) has been known in which a high voltage is applied between electrodes to cause a discharge, and the discharge energy is used to crush an object to be crushed such as a rock. By applying this electro-fracture technology, for example, an underground excavator such as a tunnel excavator, an excavator for excavating a rock or the like in a free sectional shape by moving an excavating head equipped with a plurality of electrodes to an arbitrary position, and the like Has been proposed.

For example, Japanese Patent Application No. 8-241163 discloses that in an underground excavator, a plurality of electrodes are disposed in front of the excavator, and a high voltage is applied between the plurality of electrodes to cause discharge.
An underground excavator is disclosed in which a tunnel having the same cross-section as the cross-sectional shape of the front surface of the excavator can be excavated. In addition, the publication discloses an excavator in which an electric crushing operation machine (excavation head) provided with a plurality of electrodes in a planar shape at a distal end portion of a work machine arm of a work vehicle is provided. These electric crushing devices press a plurality of electrodes arranged in a plane on the surface of the object to be crushed, apply a high voltage between the electrodes and discharge the object into the object to be crushed, and discharge a large amount of energy with the discharge energy. It is crushed and excavated. This makes it possible to excavate the tunnel cross-sectional shape into a desired shape, or it is possible to excavate on an excavation surface having a desired shape.

[0004]

By the way, in the case of the underground excavator disclosed in Japanese Patent Application No. 8-241163, there is a limit to discharge between the electrodes in order to enlarge the tunnel sectional shape. The distance between them cannot be made too long, which necessarily increases the number of electrodes. However, in this case, even if a high voltage is applied between many electrodes at the same time, electric discharge occurs only between the electrodes that are easily discharged, so that the electric crushing is performed only locally. As a result, there is a problem that efficient crushing cannot be performed because the crushing is not uniformly performed in all places. In addition, when a discharge is generated between a large number of electrodes at the same time, the discharge energy at this time becomes large, and the ground around the underground excavator is loosened and the excavation cross-sectional shape is broken. Therefore, it is important to develop a high-performance electric crusher and a method therefor that do not cause loosening of the ground during excavation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an electric crushing apparatus and a method thereof capable of efficiently and crushing a large number of electrodes by applying a high voltage to the electrodes. It is intended to provide.

[0006]

Means for Solving the Problems, Functions and Effects In order to achieve the above object, the invention according to claim 1 has a plurality of electrode pairs 1 and applies a high voltage to the electrode pairs 1. An electric crusher for crushing an object to be crushed having a positive output terminal and a negative output terminal, and outputting a high voltage between the two output terminals; One or more first electrodes 3 that form one of the paired electrodes and are connected to one of the two output terminals of the high-voltage power supply 10, and the one or more first electrodes 3 At least two or more are disposed at positions facing each other, or one is disposed at a position facing each of the two or more first electrodes 3, and each of the electrode pairs 1.
A plurality of second electrodes 2 forming the other electrodes of the first and second electrodes, and each of the second electrodes 2 and the other output terminal of the high-voltage power supply 10 are interposed between the first electrodes 3 and the second electrodes 2. 2 electrode 2
A plurality of switch means 5a to 5n for respectively switching the high voltage from the high voltage power supply 10 applied between
And the switching means 5a to 5n are switched in a predetermined order and at a predetermined timing, and high voltage is sequentially switched to control application between the first electrode 3 and the second electrode 2. The controller 40 is provided.

According to the first aspect of the present invention, one or more first electrodes and at least one or more second electrodes are provided at positions opposed to the first electrodes as electrodes for electrocrushing.
And an electrode. Then, a high voltage is applied between each of the first electrodes and at least one or more electrodes facing the first electrodes, and a discharge occurs. At this time, by switching the respective switch means interposed between each of the second electrodes and the high voltage power supply in a predetermined order and timing, the first electrode and the plurality of second electrodes facing the first electrode are switched. A high voltage is applied cyclically between the electrodes. With the cyclic high voltage application, the discharge of the electrode pair is cyclically repeated, so that the object to be crushed is electrically crushed uniformly over the entire area. Also, at this time, the high-voltage power supply sequentially outputs a high voltage to each electrode pair of one first electrode and one second electrode, so that the output energy per operation becomes small, and thus the high-voltage power supply The capacity may be small. Therefore, the size of the high-voltage power supply is reduced, and the size of the entire electric crusher is reduced. Therefore, it is possible to configure an electric crusher capable of performing the electric crush using a large number of electrodes at a low cost. Further, since the discharge energy simultaneously released at the time of crushing is reduced, the ground is not loosened due to the crushing.

[0008] According to a second aspect of the present invention, a plurality of electrode pairs 1
A high voltage is applied to the electrode pair 1 to discharge it, and in an electric crusher for crushing an object to be crushed, an output terminal on the positive electrode side and an output terminal on the negative electrode side are provided. A high-voltage power supply 10 for outputting a high voltage, and a plurality of first electrodes which form one of the electrodes of each of the electrode pairs 1 and to which one of both output terminals of the high-voltage power supply 10 is connected. 3, a plurality of second electrodes 2 which are arranged opposite to each of the first electrodes 3 and form the other electrode of each of the electrode pairs 1, and each of the second electrodes 2 and the high voltage A plurality of switch means respectively interposed between the other output terminal of the power supply 10 and switching high voltage from the high voltage power supply 10 applied between each first electrode 3 and each second electrode 2 5a to 5n and the respective switch means 5a
To 5n in a predetermined order and timing set in advance, and sequentially switching high voltages to each of the first
A controller 40 for controlling application between the electrode 3 and the second electrode 2 is provided.

According to the second aspect of the present invention, a plurality of electrode pairs are provided as electrodes for electrocrushing, and a high voltage is applied to the electrode pairs to cause discharge. At this time, the high voltage is cyclically applied to each electrode pair by switching the respective switch means interposed between any one electrode of each electrode pair and the high voltage power supply in a predetermined order and timing. Is applied to With the cyclic high voltage application, the discharge at each electrode pair is cyclically repeated, so that the object to be crushed is uniformly electrically crushed over the entire area. At this time, since the high-voltage power supply sequentially outputs the high voltage to each electrode pair, the output energy per operation becomes small, and thus the capacity of the high-voltage power supply may be small. Therefore, the high-voltage power supply is reduced in size, and thus the entire electro-crushing device is reduced in size, so that the cost remains low.
It becomes possible to configure an electro-crushing device that can perform electro-crushing with multiple electrodes. Further, since the discharge energy simultaneously released at the time of crushing becomes small, the loosening of the ground due to crushing can be suppressed.

[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
In the electro-crushing apparatus described above, the plurality of electrode pairs 1 are divided into a plurality of areas so as to include at least one or more electrode pairs 1, and the plurality of high-voltage power supplies 10 are respectively corresponding to the respective areas. The high voltage power supply 10
Is a method in which a high voltage is applied to each electrode pair 1 in each corresponding area.

According to the invention described in claim 3, according to claim 1
In the invention described in the above, the first electrode of the electrode pair and at least one or more second electrodes facing the first electrode form a plurality of electrode pairs. Divide all considered electrode pairs into multiple areas. At this time, each area includes at least one electrode pair of the first electrode and one or more second electrodes facing the first electrode.
The area is divided so as to include at least one area, and a high voltage is applied from a high voltage power supply corresponding to each area. Also, in the invention according to claim 2, the plurality of electrode pairs are divided into a plurality of areas such that each area includes at least one or more electrode pairs. A high voltage is applied from each high voltage power supply. Then, in each of these areas, a high voltage is cyclically applied to each electrode pair in a predetermined order and timing set in advance. Therefore, the same operation and effect as those of the first or second aspect of the invention are obtained, and the object to be crushed is uniformly electro-crushed in the whole area, and the size and cost of the electro-crushing device are reduced. be able to. Furthermore, by considering the area division method so that the ground does not loosen even if the discharge occurs in each area at the same time, crushing can be performed simultaneously in a plurality of areas,
Excavation by electric crushing can be performed efficiently.

According to a fourth aspect of the present invention, a plurality of electrode pairs 1
In the electric crushing method of applying a high voltage to the electrode pair 1 to discharge and crush the object to be crushed, the high voltage is applied to the plurality of electrode pairs 1 in a predetermined order and timing. Each is applied.

According to the present invention, a plurality of pairs of electrodes are provided, and a high voltage is applied to each pair of electrodes cyclically in a predetermined order and timing. Repeated cyclically. This allows
Similar to the invention according to claim 1 or 2, the crushing object is uniformly crushed in the whole area, and the crushing apparatus is downsized, and the crushing apparatus can perform the crushing with a large number of electrodes at low cost. Can be configured. Further, since the discharge energy simultaneously released at the time of crushing becomes small, the loosening of the ground due to crushing can be suppressed.

According to a fifth aspect of the present invention, a plurality of electrode pairs 1
In the electro-crushing method of applying a high voltage to the electrode pair 1 to discharge and crush an object to be crushed, a plurality of the electrode pairs 1 are provided so as to include at least one or more electrode pairs 1. The area is divided, and the high voltage power supply 10 corresponding to each area applies a high voltage to each electrode pair 1 in each block in a predetermined order and timing set in advance.

According to the fifth aspect of the present invention, the plurality of electrode pairs are divided into a plurality of blocks such that each block includes at least one or more electrode pairs, and a high voltage power supply corresponding to each block is supplied from a high voltage power supply. Is applied. Then, in each block, a high voltage is cyclically applied to each electrode pair in a predetermined order and timing set in advance, so that the same operation and effect as described in claim 1 or 2 described above. Is obtained. As a result, the object to be crushed is uniformly electro-crushed over the entire area, and the size and cost of the electro-crushing apparatus can be reduced. Further, since the discharge energy simultaneously released at the time of crushing becomes small, the loosening of the ground due to crushing can be suppressed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. In the underground excavator by electrocrushing according to the present embodiment, the excavation head at the tip is provided with a large number of electrode pairs, and it is not necessary to rotate the excavation head when excavating a tunnel, so that the excavation head has a non-circular cross section. It is possible to excavate the entire section of the tunnel. In the following,
Although an example in which the electric crusher is applied to an underground excavator is shown, the present invention is not limited to this. For example, a hydraulic excavator having a drilling head having a large number of electrodes at the tip of a working machine Etc. can be applied.

FIG. 1 shows a side cross-sectional view of a non-circular cross section excavator 60. The electrode pair 1 is attached to the front surface of a drilling head 61 provided at the tip of the underground excavator 60 having a non-circular cross section, and is connected to a high-voltage power supply 10 arranged in a tunnel by a cable (not shown) or the like. Thus, a high voltage pulse is applied. A seal member 15 is provided around the excavation head 61, and the seal member 15 keeps water between the inner surface of the tunnel and the outer surface of the excavation head 61. The solution 9 is sent by the pump 6 to the excavation head 61 through the solution supply pipe 7, and is supplied to the space between the tunnel excavation surface in front of the sealing member 15 and the outer surface of the excavation head 61, and is supplied to the periphery of the electrode pair 1. Is to be filled. A propulsion jack 22 is attached to the rear end of the excavation head 61 so as to be extendable and retractable, and the excavation head 61 is propelled forward as rocks and the like on the front surface are crushed by the expansion and contraction of the propulsion jack 22. The crushed material enters a chamber 62 provided inside the excavating head 61 and is then discharged to the rear of the tunnel by a conveyor 33 disposed behind the chamber 62.

When a tunnel excavation operation is performed with such a configuration, the tip of the electrode pair 1 of the underground excavator 60 having a non-circular cross section is brought into contact with the rock, and the solution 9 is filled around the electrode pair 1. At this time, the solution 9 is held at the front of the excavation head 61 by the seal member 15. Next, a high-voltage pulse is applied to the electrode pair 1 from the high-voltage power supply 10 to discharge the electrode pair 1, and the rock is electrocrushed. The crushed material enters the chamber 62 and is discharged by the conveyor 33. Thereafter, the excavating head 61 is advanced by the propulsion jack 22. In this way, excavation can proceed continuously and efficiently.

FIG. 2 is a front view of an excavating head 61A showing an example of a non-circular cross-section excavating head according to the present embodiment, and FIG. 3 is a perspective view of the excavating head 61A. As shown in these figures, the cross section perpendicular to the excavation direction of the excavating head 61A has a non-circular shape (here, semicircular), and the front surface of this cross section is divided into a plurality of sector-shaped sections 63A. ing. FIG. 4A is a detailed perspective view of the fan-shaped section 63A, and FIG. 4B is a sectional view taken along the line EE of FIG. 4A. The first electrode 3 is provided on the outer peripheral wall of the fan-shaped section 63A,
The second electrode 2 is provided at the center of the sector-shaped section 63A, and the second electrode 2 and the first electrode 3 form an electrode pair 1. As shown in FIG. 4B, the second electrode 2 is supported in a state insulated from the first electrode 3 by a support member 64A made of an insulating material such as plastic. Further, since the solution 9 is filled in a space surrounded between the first electrode 3 and the second electrode 2, discharge energy is efficiently input to the rock. Thus, this excavating head 61A
By using, a tunnel having a semicircular cross section can be excavated in the entire cross section, and a tunnel having a desired cross sectional shape can be excavated in a single excavation, so that work can be performed efficiently.

FIG. 5 is a circuit diagram illustrating an example of a method of connecting a large number of electrode pairs 1 to a high-voltage power supply. The multiple electrode pairs 1 are each connected to the high-voltage power supply 10 in parallel. Here, the first electrode 3 of each electrode pair 1 is
At A, it is assumed that they are electrically integrated with each other. That is, each first electrode 3 of each sector-shaped section 63A shown in FIG. 4 may be integrally formed by a metal electrode, or may be electrically connected to the same potential in the vicinity of the excavation head 61A. It may be. The integrated first electrode 3 is connected to an output terminal (usually grounded) of the high voltage power supply 10 on the negative electrode side. In addition, each of the second electrodes 2 is provided with a plurality of switch means 5.
The output terminal on the positive electrode side of the high-voltage power supply 10 is connected via a to 5n (n corresponds to the number of electrode pairs). At this time, assuming that the second electrode 2 is composed of, for example, the second electrodes 2a to 2n, the second electrodes 2a to 2n are connected to the positive output terminal of the high-voltage power supply 10 via the switch means 5a to 5n, respectively. Connected. Therefore, in the case of this circuit, in terms of potential, the common first electrode 3 and each second electrode 2
a to 2n form a plurality of electrode pairs 1 respectively.

The controller 40 includes switch means 5a to 5n.
Are controlled to be turned on / off in a predetermined order and timing set in advance. The controller 40 may be mainly configured by a microcomputer, for example, or may be configured by a semiconductor logic circuit. In addition,
For each of the switch means 5a to 5n, for example, a gap switch or the like may be used so as to increase the withstand voltage against a high voltage, or a plurality of semiconductor switches such as transistors may be connected in series and used. You may do so.

A crushing method in the electric crushing apparatus having such a configuration will be described with reference to FIGS. 6 to 8
FIG. 3 is a diagram showing an example of a discharge sequence at the electrode pair 1 at the time of electrocrushing. In FIG. 6, the semicircular center portion of the semicircular excavating head 61 </ b> A has a semicircular center angle as indicated by an arrow 12 with respect to each electrode pair 1 in which the semicircular central angle is arranged within the range of the predetermined angle α. , The corresponding switch means 5a to 5n are sequentially turned on from the outer periphery to the center to discharge. When the discharge in one range corresponding to the predetermined angle α is completed, the respective pairs of electrodes 1 arranged in the next range of the predetermined angle α can be discharged in the same manner as described above. In FIG. 7, among the semicircular excavating heads 61A, first, the column of the electrode pair 1 arranged at the outermost peripheral portion is sequentially discharged, and then the electrode pair 1 at the center side by one column from the outermost peripheral column is discharged. Discharge the columns sequentially. Then, such a discharging operation is repeated while shifting one line at a time toward the center side, and when the most central row is completed, the operation returns to the outermost row again and is repeated cyclically. Further, in FIG. 8, the discharge is sequentially shifted from the outside to the inside of the excavation head 61A to discharge. That is, first, the outermost outermost row of the electrode pairs 1 is discharged, then the outermost outermost row of the diameter portion is discharged, and then the centrally located row from the outermost outermost row is discharged. In this way, when the last row is completed by sequentially discharging spirally from the outside to the inside and returning to the outermost row, it is cyclically repeated.

As described above, the corresponding switch means 5a to 5n are cyclically turned on so that each electrode pair 1 discharges in a predetermined order at predetermined time intervals. As a result, a high voltage is cyclically applied to all the electrode pairs 1 in the excavation head 61A. Therefore, when a high voltage is applied to a large number of electrode pairs 1 at the same time, only the electrode pair 1 that is likely to discharge repeatedly discharges. Thus, a phenomenon such as local electric crushing is prevented, and the electric crushing can be performed uniformly in all parts in the excavation head 61A. Further, since each electrode pair 1 sequentially discharges every predetermined time, the amount of energy for discharging may be small, and therefore, the amount of energy output from the high-voltage power supply 10 may be small. Therefore, the capacity of the high-voltage power supply 10 can be reduced, and the size of the electric crusher can be reduced.

The configuration of the electrode pair 1 is, for example, as shown in FIG.
An electrode 3 is provided, and a plurality of second electrodes 3 are provided around the first electrode 3.
The electrodes 2a to 2n1 (where n1 is the number of the second electrodes 2 in each fan-shaped section 63A) may be arranged in a ring shape. In this case, each of the second electrodes 2a to 2n1 is connected to the output terminal on the positive side of the high voltage power supply via each of the switch means 5a to 5n1, so that the switching is performed cyclically. Thereby, the first electrode 3 in each fan-shaped section 63A is formed.
The object to be crushed around is uniformly crushed.

Further, in the above embodiment, the first electrode 3 of the electrode pair 1 has been described as an example in which the first electrodes 3 of all the electrode pairs 1 are integrated, but the present invention is not limited to this. It is not limited to this. That is, the first electrode 3 of each electrode pair 1 and the first electrode 3 of the electrode pair 1 adjacent thereto are electrically insulated from each other and disposed in the excavation head 61A. 2 and the first electrode 3 (hereinafter, referred to as a block) may be directly connected to the output terminal of the high-voltage power supply 10, respectively. In this case, as shown in FIG.
The first electrodes 3 of adjacent blocks are insulated from each other by an insulator 8 or the like. The connection from the high-voltage power supply 10 to each block is made, for example, as shown in FIG.
a to 2n are the respective switch means 5 of the switch means 5.
The first and second electrodes 3a to 3n are directly connected to the output terminals on the positive electrode side of the high-voltage power supply 10 via the terminals a to 5n, respectively. This connection eliminates the influence of the common impedance of each of the switch means 5 a to 5 n and the wiring connected to the positive or negative output terminal of the high-voltage power supply 10, so that a predetermined discharge current is applied to each electrode pair 1. Can flow. Further, it is possible to prevent the high voltage output from the high voltage power supply 10 from leaking and discharging while being applied to the intended electrode pair 1 under the control of the switch means 5. Therefore, since a high voltage is applied to each electrode pair 1 cyclically, electrocrushing is efficiently performed.

Further, all electrode pairs 1 in the drilling head 61A
Is divided into areas each including at least one or more divisible electrode pairs 1 (that is, one block or a plurality of electrode pairs 1 as shown in FIG. 9),
A plurality of high-voltage power supplies 1 corresponding to each area
0 may be provided. Each of these areas may be divided at a predetermined angle α, for example, as in the example shown in FIG. At this time, the plurality of electrode pairs 1 in each area are connected to the switch means 5 corresponding to each area.
High voltage power supply 1 through am to 5 nm (m represents each area)
Connected to 0. In this case, each of the high-voltage power supplies 10
By applying a high voltage to each of the plurality of electrode pairs 1 in each area in a predetermined order and timing cyclically, each electrode pair 1 in each area can be sequentially discharged in the same manner as described above, Since electric crushing can be performed in parallel for each divided area, excavation can be performed efficiently. here,
It is natural that each area is divided so as not to affect each other even in parallel crushing, such as loosening of the ground.

Next, a description will be given of another embodiment relating to the order of electrocrushing in another shape of the excavating head 61. FIG.
2 is a front view of an excavating head 61B having a rectangular cross section that represents another example of the excavating head having a non-circular cross section, and FIG. 13 is a perspective view of the excavating head 61B. The front part of the excavating head 61B is divided into a plurality of rectangular sections 63B. FIG.
(a) is a detailed perspective view of the rectangular section 63B, and FIG.
FIG. 14 is a sectional view taken along line FF of FIG. A star-shaped second electrode 2 is provided at the center of the rectangular section 63B, and a first electrode 3 is provided on the outer peripheral wall of the rectangular section 63B.
The electrode 1 is constituted by the electrode 2 and the first electrode 3. As shown in FIG. 14B, the second electrode 2 is supported in a state insulated from the first electrode 3 by a support member 64B made of an insulating material such as plastic. Then, since the solution 9 is filled in the space surrounded between the second electrode 2 and the first electrode 3, the discharge energy is efficiently injected into the rock.

When such an excavating head 61B is used, the connection between the second electrode 2 and the first electrode 3 of each block and the positive and negative output terminals of the high-voltage power supply 10 is as shown in FIG. 5 or FIG. That is, when all the first electrodes 3 in the excavation head 61B are integrally formed by the same metal electrode, or
When electrically connected to the same potential in the vicinity of the excavation head 61B, they are connected as shown in FIG. 5, and between the first electrodes 3 of adjacent blocks in the excavation head 61B are connected as shown in FIG. In the case where they are electrically insulated by the insulator 8 in the same manner as described above, the connection is made as shown in FIG.

The discharge of each electrode pair 1 is, for example, as shown in FIG.
Each of the switch means 5 of the switch means 5 is cyclically performed in a predetermined order as shown in FIGS.
On / off of a to 5n is controlled. In FIG. 15, one row of the electrode pair 1 arranged at the uppermost side of the excavating head 61B having a rectangular cross section is sequentially shifted from left to right as shown in the drawing, for example, and then discharged by one row. Discharge is sequentially performed from right to left in the reverse direction, and the discharge is sequentially lowered by one column. When the discharge in the lowermost column is completed, the discharge is returned to the uppermost column again and cyclically repeated. In FIG. 16, one row on the leftmost side of the excavation head 61B is sequentially shifted from top to bottom as shown in the drawing, and then discharged, and then the right row by one row is sequentially discharged from bottom to top in the reverse direction. These are sequentially shifted to the right by one column, and when the discharge in the rightmost column is completed, the process returns to the leftmost column again and repeats this cyclically.

Further, in FIG. 17, once the entire circumference of the outermost row has been rotated once, the entire circumference of the inner row only one row is next determined.
In this way, the electric power is shifted inward while rotating in a spiral, and the electric discharge is sequentially performed. When the last row is completed, the procedure returns to the outermost row again and repeats. Since crushing is performed from the outside to the inside in this manner, crushed rocks and the like are easily discharged, and crushing efficiency is improved.

As described above, even in the excavating head 61B having a rectangular cross section, a high voltage is sequentially applied to each electrode pair 1 sequentially. Thus, the electric crushing is performed uniformly throughout the excavation head 61B. In addition, since it is not necessary to discharge a large number of electrode pairs 1 at the same time,
Output capacity can be reduced.

In the above description, the high-voltage power supply 1
Although an example in which the negative electrode side of 0 is grounded is shown, the present invention is not limited to this, and the positive electrode side may be grounded. In addition, the first electrode 3 and the second electrode 2 of the electrode pair 1 are connected to the negative electrode side and the positive electrode side of the high voltage power supply 10 respectively, but the present invention is not limited to this, and the reverse connection, that is, the high voltage power supply 10 It may be connected to the positive electrode side and the negative electrode side. Further, in the above embodiment, each of the switch means 5a to 5n is interposed in the wiring to the output terminal on the side opposite to the earth ground of the high voltage power supply 10, but is not limited to this, and the output terminal on the earth ground side is not limited to this. It may be interposed in the wiring to.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a non-circular cross section underground excavator according to the present invention.

FIG. 2 shows a front view of an example of a non-circular cross-section drilling head according to the invention.

FIG. 3 shows a perspective view of the drilling head of FIG. 2;

FIG. 4 shows a detailed perspective view of a fan-shaped section of the front of the drilling head of FIG. 2;

FIG. 5 shows an example of a method for connecting a large number of electrode pairs of a drilling head to a high-voltage power supply.

FIG. 6 shows an example of a discharge sequence of a large number of electrode pairs in the drilling head of FIG.

FIG. 7 shows another example of the discharge order of a large number of electrode pairs.

FIG. 8 shows another example of the discharge order of a large number of electrode pairs.

FIG. 9 shows another configuration example of an electrode pair in a drilling head.

FIG. 10 is an explanatory diagram of insulation between respective negative electrodes in the excavating head of FIG. 2;

FIG. 11 shows another example of a method for connecting a large number of electrode pairs of a drilling head to a high-voltage power supply.

FIG. 12 shows a front view of another example of a non-circular cross-section drilling head according to the present invention.

FIG. 13 shows a perspective view of the drilling head of FIG.

14 shows a detailed perspective view of a rectangular section on the front of the drilling head of FIG.

FIG. 15 shows an example of a discharge sequence of a large number of electrode pairs in the drilling head of FIG.

FIG. 16 shows another example of the discharge order of a large number of electrode pairs.

FIG. 17 shows another example of the discharge order of a large number of electrode pairs.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrode pair 2, 2a-2n 2nd electrode 3 1st electrode 5a-5n Switch means 6 Pump 7 Solution feeding pipe 8 Insulator 9 Solution 10 High voltage power supply 15 Seal member 22 Propulsion jack 33 Conveyor 40 Controller 60 Non-circular Sectional underground excavator 61, 61A, 61B Excavation head 62 Chamber 63A Fan-shaped section 63B Rectangular section 64A, 64B Support member

Claims (5)

[Claims] A plurality of electrode pairs (1) are provided.
(1) An electric crusher for applying a high voltage to discharge and crushing an object to be crushed, which has an output terminal on a positive electrode side and an output terminal on a negative electrode side, and outputs a high voltage between the two output terminals. A high-voltage power supply (10), and one or more electrodes each of which forms one of the electrode pairs (1) and to which one of both output terminals of the high-voltage power supply (10) is connected; At least two or more first electrodes (3) are disposed at positions opposed to the one or more first electrodes (3), respectively, or are opposed to the two or more first electrodes (3), respectively. A plurality of second electrodes (2) that are arranged at one position and form the other electrode of each of the electrode pairs (1); and each of the second electrodes (2) and the high-voltage power supply (10). The high-voltage power supply (10) interposed between the other output terminals and applied between the first electrodes (3) and the second electrodes (2). A plurality of switch means (5a to 5n) for switching high voltage respectively; and a switch for switching each of these switch means (5a to 5n) in a predetermined order and timing. An electro-crushing device comprising a controller (40) for controlling application between the electrode (3) and the second electrode (2). 2. A semiconductor device comprising: a plurality of electrode pairs;
(1) An electric crusher for applying a high voltage to discharge and crushing an object to be crushed, which has an output terminal on a positive electrode side and an output terminal on a negative electrode side, and outputs a high voltage between the two output terminals. A high-voltage power supply (10), a plurality of first electrodes each of which forms one of the electrode pairs (1) and to which one of both output terminals of the high-voltage power supply (10) is connected; An electrode (3) and a plurality of second electrodes which are arranged opposite to each of the first electrodes (3) and form the other electrode of each of the electrode pairs (1)
(2), and each of the second electrodes (2) and the other output terminal of the high-voltage power supply (10) are interposed respectively, and each of the first electrodes (3) and each of the second electrodes (2) A plurality of switch means for respectively switching high voltage from the high voltage power supply (10) applied between
(5a to 5n) and the respective switch means (5a to 5n) are switched in a predetermined order and timing, and the high voltage is sequentially switched so as to sequentially switch the first electrode (3) and the second electrode (2). And a controller (40) for controlling the application between the electrolysis device and the electro-crushing device. 3. The electro-crushing apparatus according to claim 1, wherein the plurality of electrode pairs are at least one or more electrode pairs.
(1) is divided into a plurality of areas so as to include the plurality of high-voltage power supplies (10) corresponding to the respective areas.
Each of the high-voltage power supplies (10) has a corresponding electrode pair in each corresponding area.
(1) An electric crusher characterized in that a high voltage is applied to each of them. 4. It has a plurality of electrode pairs (1).
In the electro-crushing method of applying a high voltage to (1) to discharge and crush the object to be crushed, applying a high voltage to each of the plurality of electrode pairs (1) in a predetermined order and at a predetermined timing. An electrocrushing method, characterized in that: 5. A semiconductor device comprising: a plurality of electrode pairs;
(1) An electric crushing method in which a high voltage is applied and discharged to crush the object to be crushed, wherein the plurality of electrode pairs (1) are at least one or more electrode pairs.
(1) is divided into a plurality of areas so as to include (1), and each electrode pair (1) in each block is set in a predetermined order and by a high-voltage power supply (10) corresponding to each area. An electric crushing method characterized by applying a high voltage at each timing.