JP2000064765A - Rupture device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve rupture energy efficiency by discharging and supplying electric energy charged and accumulated in a capacitor through an electrode to a metal fine wire in a short time, and rupturing a rupture target by impact force rapidly melting and evaporating the metal fine wire. SOLUTION: For instance, when a bedrock H1 is ruptured, a mounting hole 20a for mounting a rupture device 1 in the bedrock H1 is drilled vertically, and the rupture device 1 is mounted in the mounting hole 20a. An energy supply circuit 9 is connected to terminals 5, 5, the electric energy of a prescribed capacity is accumulated in an energy accumulation circuit to input a discharge switch. Next, the electric energy is supplied to a metal fine wire 8 in a short time. The metal fine wire 8 is melted and evaporated to gasify gel substance 3, the bedrock H1 is ruptured and weakened by the impact force. Thereby the preparation position of a ditch is set so that a rupture face is formed in a desired direction, and the rupture method of the rupture target can be set in accordance with the condition of a jobsite.

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a destruction device using impact energy due to electric discharge. 2. Description of the Related Art Conventionally, as shown in FIG. 17, a destruction device 51 for destructing an object 50 to be destroyed, such as a bedrock, has a pair of electrodes 52, 53 with tips of Cu, Al, etc. And a capacitor 5 serving as a power supply for discharging and supplying electric energy to the thin metal wire 54.
5 is used. [0003] When the object 50 is to be destroyed by using the destruction device 51, a device insertion hole 56 is formed at a predetermined position of the object 50, and the device insertion hole 56 is filled with water 57 for destruction. , 53 and the thin metal wire 54 are immersed in water for destruction 57, electric energy is charged and accumulated in the condenser 55, and is discharged and supplied to the thin metal wire 54. Then, the thin metal wire 54 is rapidly melted and vaporized, and the destruction water 57 is vaporized, and the object to be destroyed 50 receives the impact force and is destroyed. [0004] As described above, when the device insertion hole 56 is formed from above the object 50 to be destroyed, the device insertion hole 56 can be filled with the destruction water 57.
As shown by the imaginary line in the figure, a position suitable for breaking the object to be destroyed 50 is a side portion thereof, and the device insertion hole 5 is disposed in a horizontal direction.
6, or when the position suitable for breaking the object 50 to be destroyed is the lower part and the device insertion hole 56 needs to be drilled in the elevation direction, the destruction water 57 is inserted into the device insertion hole 56. Cannot be satisfied, and it is difficult to destroy the object 50 to be destroyed. [0005] In recent years, various events have been held. For temporary structures such as pavilions used for such events, the date of removal is often specified. In the case of removing these structures, large-scale removal work is required even for a temporary facility, similar to a permanent structure. At this time, the destruction method using explosives such as dynamite involves danger. [0006] Therefore, an object of the present invention is to provide a destruction device capable of solving the above-mentioned problems. Means for solving the problem of the present invention is that a pair of electrodes are connected to a capacitor, the two electrodes are connected to each other via a thin metal wire, and the capacitor is charged and stored in advance in the capacitor. Energy is supplied to the thin metal wire in a short time through the electrode to rapidly melt and evaporate the thin metal wire to destroy the object to be broken by the impact force. Is immersed in the gel-like substance filled in and filled in a destruction container. In the above configuration, since the electrodes and the fine metal wires are immersed in the gel substance filled in the destruction container and sealed in the destruction container, the device insertion hole is formed in the object to be destroyed in the horizontal direction or the elevation angle direction. Even if it is necessary, the gel-like substance does not spill out of the mounting hole, and can be mounted in the mounting hole in any direction. Further, since the gel-like substance is excellent in the transmission speed of the impact force, the breaking energy efficiency when breaking the object to be broken is improved. Further, by mounting a destruction device which does not explode unless electric energy is supplied to the object to be destroyed in advance, there is no fear of explosion due to vibration of the object to be destroyed like dynamite. By mounting on a breakable object, a step for installation such as drilling a mounting hole in the breakable object can be omitted. Also, at a predetermined position of the mounting hole formed in the object to be destroyed, by forming a wedge-shaped groove continuous with the mounting hole in the breaking direction and destroying the object to be destroyed,
Since the impact force at the time of destruction works to break from the groove of the object to be broken and forms a fracture surface in the groove direction, determine the position where the groove is formed according to the situation at the site, and change the direction of destruction of the object to be destroyed. Can be determined. In addition, a plurality of mounting holes which are close to each other are formed in the object to be destroyed, a destruction device is mounted in each of the mounting holes, and electric energy is supplied from a capacitor to the thin metal wire at a different timing to discharge the electric energy. Since the partition between the holes is broken to make the mounting holes continuous, the mounting hole is made elliptical, and then the object to be destroyed is broken. Therefore, the breaking direction can be set based on the mutual positional relationship of the plurality of mounting holes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a breaking device according to the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view of a destruction device showing an embodiment of the present invention, FIG. 2 is a configuration diagram of a destruction device showing an embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view showing an example in which the breaking device is used, FIG. 4 is a cross-sectional view using a concrete structure such as a building, and FIG. 5 is a graph showing experimental results. As shown in FIG. 1, a destruction device 1 according to an embodiment of the present invention is configured such that a destruction container 2 made of plastic rubber (synthetic rubber) or waterproof paper is filled with a gel-like substance 3, A pair of electrode rods 4, 4 (for example, made of Cu) are inserted into the top plate 2a of the second through the through holes 2b, and the two electrode rods 4, 4 are nuts B1 (or caulked) on the top plate 2a.
And is immersed in the gel substance 3 and sealed in the destruction container 2. The two electrode rods 4, 4 are held in the middle thereof by holding members 7, 7 for holding them in parallel. C
u, Al) 8 are connected by welding or caulking. The portions where the electrode rods 4, 4 protrude from the top plate 2a are terminals 5, 5, and the terminals 5, 5 are connected to the top plate 2a.
5 is provided with a terminal cover 6 for preventing an insulating film from being formed. As shown in FIG. 2, an energy supply circuit 9 for supplying electric energy to the thin metal wires 8 is provided. The energy supply circuit 9 is connected to a power supply 10 connected to the terminals 5 and 5. The amount of electric energy stored in an energy storage circuit (capacitor) 13 connected in series between the power supply device 10 and one terminal 5 and connected in parallel between the power supply device 10 and both terminals 5 and 5 is calculated. It comprises a control circuit 11 for controlling and a discharge switch 12 connected between the control circuit 11 and one terminal 5. Next, a destruction method for destructing the rock H1 (destroyed object) using the destruction device 1 according to the embodiment of the present invention will be described with reference to FIG. First, when the upper part of the rock H1 is destroyed, as shown in the upper part of the figure, a mounting hole 20a for mounting the breaking device 1 according to the embodiment of the present invention is drilled in the rock H1, for example, in a vertical direction. The breaking device 1 is mounted in the mounting hole 20a. The energy supply circuit 9 is connected to the terminals 5 and 5, electric energy of a predetermined capacity is stored in the energy storage circuit 13, and the discharge switch 12 is turned on. 8 to supply electrical energy. Then, the thin metal wire 8 melts and evaporates, and the gel material 3 is vaporized, and the rock H1 is broken or weakened by the impact force. When the middle part (side portion) of the bedrock H1 is to be destroyed, as shown in the lower part of FIG. 1, a mounting hole 20b is drilled in the horizontal direction, and the breaking device 1 is inserted into the mounting hole 20b from the side. The thin metal wire 8 is attached and broken by supplying electric energy to the thin metal wire 8 in the same manner as described above. Even if the mounting hole 20b is formed in the middle part of the bedrock H1 in the horizontal direction, since the gel substance 3 is filled in the destruction container 2 of the destruction device 1, the gel substance 3 spills out of the mounting hole 20b. It is possible to deal with any direction of the mounting holes 20a and 20b drilled in the bedrock H1. Next, a destruction method for destroying a structure H2 (destructible object) such as a building will be described with reference to FIG. In this, when the pillars of the structure H2 are constructed, the breaking device 1 configured as described above is buried in a predetermined location in concrete in advance. In this case, the ends of the terminals 5 and 5 are led out to the surface of the structure H2 with the electric wires 14 and attached to the terminal block 15 made of an insulating material.
The terminal block 15 is fixed to the structure H2 with bolts B2, and the terminal block 15 is covered with a terminal cover 16. Then, when the structure H2 is destroyed, the energy supply circuit 9 is connected to the terminals 5 and 5 as in the above-described embodiment, and electric energy of a predetermined capacity is stored in the energy storage circuit 13,
When the discharge switch 12 is turned on, electric energy is supplied to the thin metal wire 8 in a short time, the thin metal wire 8 melts and evaporates, and the gel-like substance 3 is vaporized, and the impact force destroys the structure H2. Or vulnerable. According to this embodiment, since the destruction device 1 does not explode unless electric energy is supplied, even if the destruction device 1 is buried in the structure H2 in advance,
There is no danger of explosion due to the vibration of the structure H2 like dynamite, and it is safe.
By embedding in H2, the process for installation of an apparatus, such as making a mounting hole in the structure H2, can be omitted. FIG. 5 shows the results of experiments using the apparatus according to the embodiment of the present invention, and shows the waveform of the pressure (P) generated due to the vaporization of the fine metal wires 8. In the figure, the horizontal axis is the elapsed time (t). The amount of electric energy stored in the energy storage circuit 13 was 750 J, and the diameter of the thin metal wire 8 was 0.3 mm. According to the results of this experiment (in this experiment, water was used instead of the gel-like substance 3), the generated pressure (Pm) at a position 1 cm from the discharge point was 5000 kg / cm ² . As described above, even when it is necessary to drill the mounting holes 20a and 20b in the horizontal direction and the elevation direction in the object to be destroyed such as the bedrock H1, the gelling substance 3 is filled in the destroying container 2. As a result, the gel-like substance 3 does not spill out of the mounting holes, and therefore can be mounted in the mounting holes 20a and 20b in all directions.
Since the destruction device 1 according to the embodiment of the present invention does not explode unless electric energy is supplied, even if the destruction device 1 is buried in a destruction object such as a building in advance, the destruction device 1 vibrates like a dynamite. It is safe because there is no concern about the damage, and furthermore, it is possible to omit an installation process such as making a mounting hole in the object to be destroyed. When destroying a wide range of objects to be destroyed,
Connect electrical wiring to a plurality of destruction devices 1
By supplying electrical energy to each destruction device at once or sequentially, efficient destruction is possible. In the case of the destruction device 1 using this gel-like substance 3, the gel-like substance 3 is excellent in the transmission speed of the impact force, so that the mounting hole 20a (20b) formed in the object to be destroyed has a wedge-like shape connected thereto. As shown in FIGS. 6 and 7, a pair of the grooves 20c are formed at a height equal to the mounting hole 20a and in a direction to be a fracture surface. The mounting hole 20a in which the groove 20c is formed
The destruction container 2 filled with the gel-like substance 3 is mounted, electric energy of a predetermined capacity is stored in the energy storage circuit 13, and the discharge switch 12 is turned on to supply electric energy to the thin metal wire 8 in a short time. It destroys objects to be destroyed. When such an object to be destroyed is broken, the impact force is radially dispersed around the thin metal wire 8 in the radial direction of the virtual sphere in FIGS. 6 and 7, but the wedge-shaped groove is formed in the mounting hole 20a. By forming a pair of the grooves 20c, a broken surface broken along a line C1 connecting the grooves 20c is formed. Therefore, according to this method, by setting the position where the groove 20c is formed so as to form a fractured surface in a desired direction, a method of destroying an object to be destroyed according to the situation at the site becomes possible. As shown in FIGS. 8 and 9, the groove 20c can be easily formed by driving a blade-shaped pile 25 into the mounting hole 20a once formed. Further, another embodiment of the destruction method is shown in FIG.
This will be described with reference to FIG. 16. This is because a plurality of (two in the figure) cylindrical mounting holes 20a (20b)
Are formed close to each other via the partition wall 20d of the object to be destroyed (H1, H2), and the destruction device 1 is mounted in each of the mounting holes 20a to break the device. After the discharge switch 12 is turned on, the other discharge switch 1 is turned on.
As shown in FIG. 16, electric energy is discharged and supplied to the thin metal wires 8 of each destruction device 1 with the timing shifted by T time. The destruction apparatus 1 used in this destruction method is one in which the destruction container 2 is filled with the gel-like substance 3. In the above destruction method, first, one of the destruction devices 1
The partition 20d between the two mounting holes 20a is broken by
As shown in FIG. 11, the two mounting holes 20a separated by the partition wall 20d communicate as shown in FIGS. 13 and 14 to form an ellipse. In this state, when the discharge switch 12 of the other destruction device 1 is turned on to supply electric energy to the thin metal wire 8 in a discharge manner, the impact force first acts on the inner wall of the elliptical hole in the short diameter direction and then on the long diameter direction. It acts on the inner wall and is synthesized as a whole in directions D3 and D4 indicated by arrows in FIG. The amount of energy (voltage) stored in the energy supply circuit 13 of one destruction device 1 is
Any device that can destroy 0d is sufficient, and the object to be destroyed is destroyed by the other destruction device 1. According to the destruction method in this embodiment, the destruction method can be set in a desired direction according to the situation at the site, based on the mutual positional relationship of the plurality of mounting holes 20a. Further, there is no need to form the mounting hole 20a in an elliptical shape in advance, and therefore, it is possible to improve the working efficiency for breaking the object to be broken. As is apparent from the above description, since the destruction device of the present invention fills the destruction container with the gel-like substance, the object to be destroyed can be mounted in the horizontal direction or the elevation direction. Even if it is necessary to drill a mounting hole, the gel-like substance does not spill out of the mounting hole and can be mounted in the mounting hole in any direction. Since it is excellent, it is possible to improve the breaking energy efficiency when destroying the object to be destroyed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a partly broken main part of a breaking device according to an embodiment of the present invention. FIG. 2 is a configuration diagram showing an experimental example of the destruction device. FIG. 3 is a cross-sectional view showing the same destruction device mounted on rock. FIG. 4 is a cross-sectional view of another embodiment showing a state in which a breaking device is embedded in a structure. FIG. 5 is a graph showing a waveform of a pressure generated due to evaporation and vaporization of a thin metal wire obtained by the experimental apparatus of the present invention. FIG. 6 is a horizontal sectional view of a breaking method according to another embodiment of the present invention. FIG. 7 is a vertical sectional view of the same. FIG. 8 is a horizontal sectional view when a groove is formed in the mounting hole. FIG. 9 is a vertical sectional view of the same. FIG. 10 is a partially cutaway sectional view showing a state in which a breaking device according to another embodiment is mounted in a mounting hole. FIG. 11 is an enlarged horizontal sectional view of a groove formed in the object to be destroyed. FIG. 12 is a schematic vertical sectional view showing a state where a breaking device is mounted in a groove formed in the object to be broken. FIG. 13 is a horizontal cross-sectional view of an object to be broken which has become elliptical due to supply of electric energy to a thin metal wire of one of the breaking devices. FIG. 14 is a schematic vertical sectional view of the same. FIG. 15 is a horizontal sectional view showing a breaking direction of an object to be broken. FIG. 16 is a time chart showing the timing of destruction of an object to be destroyed by one destruction device and the other destruction device. FIG. 17 is a cross-sectional view of a state in which a conventional breaking device is mounted on rock. [Description of Signs] 1 Destruction device 2 Destruction container 3 Gel-like substance 4 Electrode rod 5 Terminal 8 Metal wire 9 Energy supply circuit 10 Power supply device 11 Control circuit 13 Energy storage circuit 15 Terminal block 20a Mounting hole 20c Groove 20d Partition wall C1 Breaking direction H1 bedrock H2 structure

Continuation of front page    (72) Inventor Hidehiko Maehata             1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi, Osaka             No. Within Hitachi Zosen Corporation (72) Inventor Hiroyuki Carpenter             1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi, Osaka             No. Within Hitachi Zosen Corporation (72) Inventor Tetsuya Inoue             1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi, Osaka             No. Within Hitachi Zosen Corporation

Claims (1)

Claims 1. A pair of electrodes are connected to a capacitor,
The two electrodes are connected to each other via a thin metal wire, and the electric energy previously charged and stored in the capacitor is discharged and supplied to the thin metal wire in a short time through the electrode.
In a destruction device for rapidly melting and evaporating a thin metal wire to break an object to be destroyed by its impact force, the electrode and the thin metal wire are immersed in a gel-like substance filled in the destruction container and sealed in the destruction container. A destruction device.