JPH0929732A - Apparatus and method for breaking material to be broken - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate low-cost manufacture and to easily decide the amplitude of an applied voltage to an electrode by aligning metal cores, removing the coating member end of a cable covered with a coating member and exposing the cores with breaking substance as electrodes. SOLUTION: The apparatus for breaking has metal cores 4 exposed with breaking substance 3 by holding a plurality of metal wires 4 in parallel and removing the ends of the coating member 7 of existing cable 6 covered with the member 7 as electrodes 4. When electric energy is stored in a capacitor and a discharge switch is closed, the electrodes 4a are discharged therebetween, the substance 3 is abruptly vaporized to break or embrittle substance H to be broken by impact pressure generated in this case. Thus, in the case of manufacturing the apparatus, an operator does not need the regulation of a distance between the electrodes 4 and skillfulness. Special electrode for manufacturing the apparatus is not necessarily prepared.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for destroying an object to be destroyed using impact energy generated by electric discharge.

[0002]

2. Description of the Related Art Conventionally, there are the following destruction devices for destroying an object to be destroyed such as a concrete structure or rock by using impact energy due to electric discharge.

That is, a destruction container to be mounted in a mounting hole formed in an object to be destroyed, and a pair of a pair of members whose tip is immersed in a destruction substance (for example, water is used) for transmitting generated pressure filled in the destruction container. It has an electrode (for example, a rod-shaped one or a plate-shaped one is used), and electric energy is charged and stored in a capacitor connected to the other end of the pair of electrodes, and this electric energy is applied to each electrode in a short time. By supplying it, it discharges between each electrode and vaporizes the destructive substance rapidly,
The object to be destroyed is destroyed by the impact pressure generated at that time.

[0004]

In the above-mentioned destruction device, since the discharge is performed between the pair of electrodes, it is difficult to set the distance between the electrodes for determining the discharge position, and this makes it possible to reduce the amount of electric energy charged and accumulated in the capacitor. Setting is also difficult.

Further, when manufacturing the destruction device, a pair of electrodes must be specially prepared, which causes a problem of high cost. Therefore, an object of the present invention is to provide a destruction device and a destruction method for an object to be destroyed that can solve the above problems.

[0006]

Means for solving the problems of the present invention is to prepare a ready-made cable in which a plurality of metal cores are arranged side by side and covered with a covering member by cutting off the end of the covering member. By exposing the part to the destructive substance and using this as an electrode, the electric energy charged and accumulated in the capacitor is supplied between the electrodes in a short time to cause discharge,
The destructive substance for transmitting shock pressure is rapidly vaporized, and the object to be destroyed is destroyed by the impact pressure generated at that time.Because the metal core of the ready-made cable is used as the electrode, the distance between the electrodes can be adjusted. Is unnecessary, and the destruction device can be easily manufactured.

Similarly, a ready-made coaxial cable in which the metal inner core portion and the metal outer core portion arranged concentrically with each other are covered with a covering member, the end portions of the covering member are cut off, and the metal inner core portion and the metal outer core portion are cut off. Even if the material is exposed to a destruction material and is used as an electrode, it is not necessary to adjust the distance between the electrodes, and the destruction device can be easily manufactured.

Further, the relationship between the distance L (mm) between the electrodes and the voltage Vp (volt) applied between the electrodes is set to Vp ≧ 1000L, so that the distance between the electrodes is fixed in a ready-made cable. , The electric energy corresponding to the voltage Vp satisfying the above inequality is charged and accumulated in the capacitor and is supplied between the electrodes to be discharged, whereby the destructive substance for transmitting the impact pressure is rapidly vaporized and generated at that time. It is possible to reliably destroy or weaken the object to be destroyed by the impact pressure applied.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to FIGS. This destruction device 1
Is used for rock mass destruction of a residential land development site and small-scale work of rock, or for finishing damage of a tunnel or dismantling of an object to be destroyed H1 such as a concrete structure.

Then, as shown in the configuration diagram of FIG. 1 and the enlarged view of FIG. 2, a breakage which is formed from a plastic rubber (synthetic rubber), waterproof paper or glass and which is mounted in a mounting hole 20a formed in an object to be destroyed H1. The container 2 is filled with a destructive substance (for example, water or the like) 3 for transmitting the generated impact force, and the enclosure plug 2a of the destructive container 2 is provided with a plurality (two in the figure) of metal core portions (for example, from Cu). 4) are arranged side by side, and the ready-made cable 6 covered and held by the covering member 7 made of synthetic resin is inserted and fixed, and the tip end portion of the covering member 7 is cut off to destroy the metal core portions 4 and 4. The material 3 is exposed, and each exposed portion is used as an electrode 4a. In the ready-made cable 6, the distance L between the metal core portions 4 and 4 is predetermined.

An energy supply device 9 for supplying electric energy is provided between the electrodes 4a, and the energy supply device 9 is connected to the other end side terminals 5, 5 of the metal core portions 4, 4. Power supply device 10 and this power supply device 1
0 and one of the terminals 5 are connected in series to connect the power supply device 10
A charge control circuit 11 for controlling the amount of electric energy (charge voltage amount) accumulated in the battery, a discharge switch 12 connected between the charge control circuit 11 and one terminal 5, a power supply device 10, and both terminals. It is composed of a capacitor 13 connected in parallel between the capacitors 5 and 5.

In the destruction apparatus 1 constructed as described above, the destruction substance 3 is injected into the destruction container 2, the ready-made cable 6 is inserted into the sealing plug 2a, and the tip of the covering member 7 of the cable 6 is inserted. The metal cores 4 and 4 are cut off to expose the metal cores 4 and 4 and immersed in the substance 3 for destruction.
The mounting hole 20 in which the destruction container 2 is formed in the object to be destroyed H1
Attached to a, the energy supply device 9 is connected to the terminals 5 and 5 of the metal cores 4 and 4, and electric energy is stored in the condenser 13.

By the way, the distance L (mm) between the electrodes 4a
And the voltage Vp (volt) applied between the electrodes 4a, which is the minimum required to generate a discharge between the electrodes 4a, were experimentally obtained, and the result is as shown in the graph of FIG.

That is, from this graph, the distance L between the electrodes 4a and the voltage V required to generate the discharge between the electrodes 4a are shown.
The relationship with p is 10 when the distance L between the electrodes 4a is 1 mm.
It was found that the voltage was 00 volts, and therefore the relationship between the distance L between the electrodes 4a and the voltage Vp was Vp ≧ 1000L (1), so that between the electrodes 4a separated by the distance L. Can be discharged. That is, it is necessary to store electric energy in the capacitor 13 so as to satisfy the above (1).

Then, electric energy is accumulated in the capacitor 13 so as to satisfy the above (1), and the discharge switch 12
When is turned on, a discharge is generated between the electrodes 4a, the destructive substance 3 is rapidly vaporized, and the impact pressure generated at that time destroys or weakens the object to be destroyed H1.

According to the first embodiment of the present invention,
Since the tip of the covering member 7 of the ready-made cable 6 holding the metal cores 4 and 4 in parallel is cut off to expose the metal cores 4 and 4 to the destructive substance 3, which is used as the electrode 4a. When the destruction device 1 is manufactured, it is not necessary for an operator to adjust the distance between the electrodes 4a, and therefore, the destruction device 1 can be easily manufactured without requiring skill, and for the purpose of manufacturing the destruction device 1. Since it is not necessary to prepare a special electrode, the destruction device 1 can be manufactured at low cost.

If the cable 6 is a ready-made cable, the electrode 4
Since the distance L between a is fixed, the cable 6
With respect to the distance L between the electrodes 4a corresponding to, the electric energy corresponding to the voltage Vp satisfying the above equation (1) is stored in the capacitor 13, so that the discharge can be generated between the electrodes 4a, and therefore, It is also easy to control the amount of electric energy stored in the condenser 13.

Next, a second embodiment of the present invention will be described with reference to FIGS.
Electrodes 27, 27 immersed in the destructive substance 26 filled in
The metal inner core portion 28 and the metal outer core portion 2 arranged concentrically with each other.
A ready-made coaxial cable 31 in which 9 is covered with a covering member 30.
The metal inner core portion 28 and the metal outer core portion 29 exposed by cutting off the tip end of the covering member 30 are exposed.

Similar to the first embodiment, the coaxial cable 31 is inserted into the enclosure plug 32 attached to the destruction container 25, and both electrodes 27, 27 are immersed in the destruction substance 26 filled in the destruction container 25. An energy supply device similar to that shown in FIG. 1 is connected between the other end side terminals 24 of the core portions 28, 29.

In this structure, the breaking substance 26 is injected into the breaking container 25, the ready-made coaxial cable 31 is inserted into the sealing plug 32, and the tip end portion of the covering member 30 of the coaxial cable 31 is cut off to remove the inside of the metal. The core portion 28 and the metal outer core portion 29 are exposed and immersed in the destruction substance 26, the destruction container 25 is covered with the sealing plug 32, and the destruction container 25 is mounted in the mounting hole 20a formed in the object to be destroyed H1.

Further, the metal inner core portion 28 and the metal outer core portion 2
An energy supply device is connected between the terminals 24 of 9 and the electric energy is stored in the capacitor so that the relationship between the distance L between the electrodes 27 and the voltage Vp applied between the electrodes 27 satisfies the above formula (1). To do.

When the discharge switch is turned on in this manner, a discharge is generated between the electrodes 27, 27, and the destruction material 26
Rapidly evaporates, and the object to be destroyed H1 is broken or weakened by the impact pressure generated at that time.

According to the second embodiment of the present invention, the tip of the covering member 30 of the ready-made coaxial cable 31 is cut off to expose the inner metal core portion 28 and the outer metal core portion 29 to the destructive substance 26. Since the electrodes are used as the electrodes 27, 27, it is not necessary for an operator to adjust the distance between the electrodes 27, 27 at the time of manufacturing the destruction device, and thus, similarly to the first embodiment, without requiring skill. It can be easily manufactured, and since it is not necessary to prepare a special electrode for manufacturing the destruction device, the destruction device can be manufactured at low cost and the amount of electric energy stored in the capacitor can be easily controlled.

[0024]

As is apparent from the above description, according to the present invention, in a cable having a plurality of metal cores, an electrode immersed in a destructive substance is exposed by cutting off a covering member at its end. Since it is the core part, when manufacturing the destruction device, it is not necessary to adjust the distance between the electrodes which was conventionally done,
Therefore, since the destruction device can be easily manufactured, and it is not necessary to prepare a special electrode for manufacturing the destruction device,
Since the destruction device can be manufactured at a low cost and the distance between the metal core portions, that is, the distance between the electrodes is fixed, the magnitude of the applied voltage applied to the electrodes can be easily determined.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a breaking device according to a first embodiment of the present invention.

FIG. 2 is also an enlarged vertical sectional view of the destruction container.

FIG. 3 is likewise a horizontal enlarged sectional view of the destruction container.

FIG. 4 is a graph showing the relationship between the distance between electrodes and the applied voltage required for destruction.

FIG. 5 is an enlarged vertical sectional view of a destruction container showing a second embodiment of the present invention.

FIG. 6 is likewise a horizontal enlarged sectional view of the destruction container.

[Explanation of symbols]

 1 Destruction Device 2 Destruction Container 2a Enclosure 3 Destruction Material 4 Metal Core 4a Electrode 5 Terminal 6 Cable 7 Covering Material 9 Energy Supply Device 10 Power Supply Device 11 Charge Control Circuit 12 Discharge Switch 13 Capacitor 20a Mounting Hole 25 Destruction Container 26 Destruction Material 27 Electrode 28 Metal inner core portion 29 Metal outer core portion 30 Covering member 31 Coaxial cable H1 Destroyed object

Claims (3)

[Claims] 1. The electric energy charged and accumulated in the capacitor is supplied between the electrodes in a short time to discharge the electric energy, thereby rapidly vaporizing the destructive substance for transmitting the impact pressure, and by the impact pressure generated at that time. A destruction device for destroying an object to be destroyed, wherein a cable having a plurality of metal cores arranged side by side and covered with a covering member is cut off at the end of the covering member to expose each of the metal cores to a substance for destruction, A device for destroying an object to be destroyed, which is used as an electrode. 2. The electric energy charged and accumulated in the capacitor is supplied between the electrodes in a short time to discharge the electric energy, thereby rapidly vaporizing the destructive substance for transmitting the impact pressure, and by the impact pressure generated at that time. A destruction device for destroying an object to be destroyed, wherein a coaxial cable in which a metal inner core portion and a metal outer core portion arranged concentrically with each other are covered with a covering member, the end portion of the covering member is cut off, and the metal inner core portion and the metal An apparatus for destroying an object to be destroyed, wherein an outer core portion is exposed to a material for destruction and used as an electrode. 3. When destroying an object to be destroyed using the destruction apparatus according to claim 1 or 2, the distance L (mm) between the electrodes immersed in the destruction material and the voltage applied between the electrodes are applied. The method for destroying an object to be destroyed is characterized in that the relationship with the voltage Vp (volt) to be applied is Vp ≧ 1000L.