JP3107718B2 - How to destroy objects - Google Patents
How to destroy objectsInfo
- Publication number
- JP3107718B2 JP3107718B2 JP06295438A JP29543894A JP3107718B2 JP 3107718 B2 JP3107718 B2 JP 3107718B2 JP 06295438 A JP06295438 A JP 06295438A JP 29543894 A JP29543894 A JP 29543894A JP 3107718 B2 JP3107718 B2 JP 3107718B2
- Authority
- JP
- Japan
- Prior art keywords
- destruction
- destroyed
- breaking
- distance
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、放電による衝撃エネル
ギーを用いた被破壊物の破壊方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for destroying an object to be destroyed using impact energy due to electric discharge.
【０００２】[0002]
【従来の技術】従来、コンクリート構造物などの被破壊
物を破壊する方法として次のようなものがある。2. Description of the Related Art Conventionally, there are the following methods for destroying an object to be destroyed such as a concrete structure.
【０００３】すなわち、コンデンサーに接続された一対
の電極と、この両電極間に接続された金属細線とを備え
た破壊装置を用い、コンデンサーに充電蓄積した電気エ
ネルギーを短時間で金属細線に供給放電して、これによ
り生じる金属細線の急激な溶融気化に伴う発生衝撃力で
被破壊物を破壊するものであり、図５に示すように、被
破壊物５０に所定間隔ごとで、かつ同一線上に破壊用孔
５１を形成し、各破壊用孔５１に破壊装置（破壊プロー
ブ）５２を装着して、各破壊装置５２の電極に電気エネ
ルギーを供給するものである。That is, using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes, the electric energy charged and stored in the capacitor is supplied to the thin metal wire in a short time. Then, the object to be destroyed is destroyed by the impact force generated by the rapid melting and vaporization of the fine metal wire generated thereby, and as shown in FIG. A breaking hole 51 is formed, a breaking device (breaking probe) 52 is attached to each breaking hole 51, and electric energy is supplied to an electrode of each breaking device 52.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の方法によれ
ば、各破壊用孔５１に装着した破壊装置５２の電極に電
気エネルギーを供給することにより、被破壊物５０を破
壊することができるが、各破壊用孔５１間の離間距離は
設定されていても、この離間距離と破壊用孔５１から被
破壊物５０の外側の自由面である外表面５３までの距離
との間に一定の関係を設定していない。According to the above-mentioned conventional method, the object 50 can be destroyed by supplying electric energy to the electrode of the destruction device 52 mounted in each destruction hole 51. Even if the separation distance between the breaking holes 51 is set, there is a fixed relationship between the separation distance and the distance from the breaking hole 51 to the outer surface 53 which is the free surface outside the object 50 to be destroyed. Is not set.
【０００５】このため、例えば破壊用孔５１間の離間距
離よりも、破壊用孔５１から被破壊物５０の外表面５３
までの距離が小さい場合は、各破壊用孔５１を結んだ方
向に破壊せずに、破壊用孔５１から外表面５３に向けて
（各破壊用孔５１を結んだ方向に直角な方向）に破壊し
てしまう場合があり、正確に破壊方向の予測ができない
といった課題がある。For this reason, for example, the outer surface 53 of the object 50 to be destroyed is larger than the separation distance between the holes 51 for destruction.
In the case where the distance is small, the wire is not broken in the direction connecting the breaking holes 51 but is directed from the breaking hole 51 toward the outer surface 53 (in a direction perpendicular to the direction connecting the breaking holes 51). There is a problem that the device may be destroyed and the direction of the failure cannot be accurately predicted.
【０００６】そこで本発明は上記課題を解決し得る被破
壊物の破壊方法の提供を目的とする。Accordingly, an object of the present invention is to provide a method for destroying an object to be destroyed which can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】本発明における課題を解
決するための手段は、コンデンサーに接続された一対の
電極と、該両電極間に接続された金属細線とを備えた破
壊装置を用い、コンデンサーに充電蓄積した電気エネル
ギーを金属細線に供給放電し、これにより生じる金属細
線の急激な溶融気化に伴う発生衝撃力で被破壊物を破壊
する破壊方法において、被破壊物に穿つ複数の破壊用孔
の間隔を、各破壊用孔から被破壊物の外表面までの距離
より小さく設定して被破壊物を破壊するものである。Means for solving the problem of the present invention is achieved by using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes. In the destruction method that supplies and discharges the electric energy stored in the capacitor to the fine metal wire and destroys the destructible object by the impact force generated by the rapid melting and vaporization of the fine metal wire, the multiple destruction of the The distance between the holes is set smaller than the distance from each breaking hole to the outer surface of the object to be destroyed, and the object to be destroyed is destroyed.
【０００８】[0008]
【作用】上記破壊方法において、被破壊物に穿つ複数の
破壊用孔の間隔を、各破壊用孔から被破壊物の外表面ま
での距離より小さく設定して破壊装置を破壊用孔に装着
し、所定の容量の電気エネルギーをコンデンサーに蓄積
してその電気エネルギーを金属細線に供給放電すると、
金属細線の急激な溶融気化に伴う衝撃力が発生し、その
衝撃力が各破壊用孔を結んだ線で被破壊物を分離させる
方向に働き、被破壊物が、各破壊用孔を結んだ線に沿っ
て破壊あるいは脆弱化する。In the above destruction method, the distance between the plurality of destruction holes drilled in the object to be destroyed is set to be smaller than the distance from each of the destruction holes to the outer surface of the object to be destroyed, and the destruction device is mounted on the destruction hole. When a predetermined amount of electric energy is stored in a capacitor and the electric energy is supplied to a thin metal wire and discharged,
An impact force is generated due to the rapid melting and vaporization of the thin metal wire, and the impact force acts in the direction that separates the destruction object at the line connecting each destruction hole, and the destruction object connects each destruction hole Breaks or weakens along the line.
【０００９】[0009]
【実施例】以下、本発明破壊方法の実施例を図面に基づ
いて説明する。図１は本発明の実施例を示す破壊容器の
一部破断正面図、図２は使用状態を示す説明図、図３は
破壊用孔を穿った被破壊物の平面図、図４は破壊後の被
破壊物の破壊状態を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway front view of a destruction container showing an embodiment of the present invention, FIG. 2 is an explanatory view showing a use state, FIG. 3 is a plan view of an object to be destroyed having a hole for destruction, and FIG. It is a perspective view which shows the destruction state of the to-be-destructed object.
【００１０】図１に示すように、本発明の実施例に係る
破壊方法を実施するための破壊装置１は、プラスチック
ゴムや防水処理紙製の破壊容器２に、破壊用液（例え
ば、水などが用いられる）３が充填され、前記破壊容器
２の天板２ａに一対の電極棒４，４（例えばＣｕからな
る）が貫通孔２ｂから挿入され、前記両電極棒４，４は
前記天板２ａにナットＢ１（又はかしめ）により固定さ
れて破壊用液３に浸漬されるとともに破壊容器２に封入
されている。As shown in FIG. 1, a destruction apparatus 1 for carrying out a destruction method according to an embodiment of the present invention includes a destruction container 2 made of plastic rubber or waterproof paper and a destruction liquid (for example, water or the like). 3), a pair of electrode rods 4, 4 (for example, made of Cu) are inserted into the top plate 2a of the destruction container 2 from the through-hole 2b, and the two electrode rods 4, 4 are connected to the top plate. 2a is fixed by a nut B1 (or caulking), is immersed in the breaking liquid 3, and is sealed in the breaking container 2.
【００１１】また前記両電極棒４，４は、その途中が電
極棒４，４を平行に保持するための保持部材７，７で保
持され、両電極棒４，４の先端部には金属細線８（例え
ばＣｕ，Ａｌからなる）が溶接やかしめにより取り付け
られている。The two electrode rods 4 and 4 are held in the middle thereof by holding members 7 and 7 for holding the electrode rods 4 and 4 in parallel. 8 (for example, made of Cu and Al) is attached by welding or caulking.
【００１２】そして前記両電極棒４, ４の天板２aから
突出した部分が端子５, ５とされ、前記天板２aに端子
５, ５に絶縁被膜が形成されるのを防止する端子カバー
６が取り付けられている。[0012] Then the both electrode rod 4, 4 portion projecting from the top plate 2a of the terminal 5, 5, terminal cover to prevent the insulating film is formed on the terminal 5, 5 to the top plate 2a 6 Is attached.
【００１３】図２に示すように、前記金属細線８に電気
エネルギーを供給するためのエネルギー供給回路９が設
けられ、該エネルギー供給回路９は、前記端子５，５に
接続された電源装置１０と、該電源装置１０と一方の端
子５との間に直列接続されて前記電源装置１０に蓄積す
る電気エネルギー量を制御するための制御回路１１と、
該制御回路１１と一方の端子５との間に接続された放電
スイッチ１２と、前記電源装置１０と両端子５，５との
間に並列接続されたエネルギー蓄積回路（コンデンサー
からなる）１３とから構成されている。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 device 10 connected to the terminals 5 and 5. A control circuit 11 connected in series between the power supply device 10 and the one terminal 5 for controlling the amount of electric energy stored in the power supply device 10;
A discharge switch 12 connected between the control circuit 11 and one terminal 5 and an energy storage circuit (consisting of a capacitor) 13 connected in parallel between the power supply device 10 and both terminals 5 and 5 are provided. It is configured.
【００１４】次に図２および図３に基づいて、本発明の
実施例に係る破壊装置１を用いて被破壊物Ｈ１を破壊す
る破壊方法を説明する。まず、被破壊物Ｈ１に所定の離
間距離Ｙで複数個の破壊用孔２０ａを穿つ。このとき破
壊用孔２０ａの離間距離Ｙを、破壊用孔２０ａから被破
壊物Ｈ１の外側自由面である外表面３０までの距離Ｚよ
りも小さく設定しておく。Next, with reference to FIGS. 2 and 3, a destruction method for destroying an object to be destroyed H1 using a destruction device 1 according to an embodiment of the present invention will be described. First, a plurality of destruction holes 20a are drilled at a predetermined distance Y in the object to be destroyed H1. At this time, the separation distance Y between the breaking holes 20a is set to be smaller than the distance Z from the breaking hole 20a to the outer surface 30 which is the outer free surface of the object H1.
【００１５】そして、破壊容器２の内部に破壊用液３を
充填するとともに、この破壊用液３に電極４，４および
これに接続した金属細線８を浸漬し、例えば破壊容器２
を、破壊用孔２０ａに一個置きに装着する。Then, the inside of the destruction vessel 2 is filled with the destruction liquid 3, and the electrodes 4, 4 and the thin metal wires 8 connected thereto are immersed in the destruction liquid 3.
Are mounted in the breaking holes 20a alternately.
【００１６】そして上記のエネルギー供給回路９を端子
５，５に接続し、所定の容量の電気エネルギーをエネル
ギー蓄積回路１３に蓄積し、放電スイッチ１２をオンす
ると、短時間の間に金属細線８に電気エネルギーが供給
され、金属細線８が溶融蒸発するとともにその際の衝撃
力が破壊用液３に与えられる。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. Electric energy is supplied, and the thin metal wire 8 is melted and evaporated, and an impact force at that time is given to the breaking liquid 3.
【００１７】そして、破壊用孔２０ａの離間距離Ｙを、
破壊用孔２０ａから被破壊物Ｈ１の外表面３０までの距
離Ｚよりも小さく設定し、破壊容器２は破壊用孔２０ａ
に一個置きに装着しているので、破壊容器２に隣合っ
た、破壊容器２を装着していない破壊用孔２０ａの内周
面が破壊容器２に最も近い自由面となり、従って、金属
細線８が溶融蒸発する際の衝撃力が、各破壊用孔２０を
結んだ線で被破壊物Ｈ１を分離させる方向に働き、図４
に示すように、被破壊物Ｈ１を、各破壊用孔２０ａを結
んだ線に沿って破壊あるいは脆弱化させることができ
る。The distance Y between the breaking holes 20a is
The distance Z from the hole 20a for destruction to the outer surface 30 of the object to be destroyed H1 is set smaller than the distance Z.
The inner peripheral surface of the destruction hole 20a adjacent to the destruction container 2 where the destruction container 2 is not mounted is the free surface closest to the destruction container 2, and therefore, the thin metal wire 8 The impact force at the time of melting and evaporating acts on the line connecting the breaking holes 20 in the direction of separating the object to be destroyed H1, and FIG.
As shown in (1), the object to be destroyed H1 can be broken or weakened along the line connecting the breaking holes 20a.
【００１８】このように、本発明の実施例における破壊
方法によれば、被破壊物Ｈ１に穿つ破壊用孔２０ａの離
間距離Ｙを、破壊用孔２０ａから被破壊物Ｈ１の外表面
３０までの距離Ｚよりも小さく設定しているので、破壊
容器２に隣合った、破壊容器２を装着していない破壊用
孔２０ａの内周面が破壊容器２に最も近い自由面とな
り、金属細線８が溶融蒸発する際の衝撃力が、各破壊用
孔２０を結んだ線で被破壊物Ｈ１を分離させる方向に働
き、従って、被破壊物Ｈ１が破壊用孔２０ａから外表面
３０に向けて破壊されるのを防止して、被破壊物Ｈ１を
予め設定した破壊方向に正確に破壊できる。As described above, according to the destruction method in the embodiment of the present invention, the separation distance Y between the destruction hole 20a drilled in the object H1 and the outer surface 30 of the object H1 is determined. Since the distance Z is set smaller than the distance Z, the inner peripheral surface of the breaking hole 20a adjacent to the breaking container 2 where the breaking container 2 is not mounted is the free surface closest to the breaking container 2, and the thin metal wire 8 is The impact force at the time of melting and evaporating acts in a direction to separate the object to be destroyed H1 by a line connecting each of the holes for destruction 20, so that the object to be destroyed H1 is destroyed from the hole for destruction 20a toward the outer surface 30. In this way, the object H1 can be accurately destroyed in a predetermined direction.
【００１９】特に、小さい体積の被破壊物Ｈ１の場合、
従来の方法では破壊方向の設定が難しかったが、上記の
ように破壊用孔２０ａの離間距離Ｙを、破壊用孔２０ａ
から被破壊物Ｈ１の外表面３０までの距離Ｚよりも小さ
く設定して破壊するようにすれば、小さい体積の被破壊
物Ｈ１であっても、予め設定した破壊方向に正確に破壊
できる。In particular, in the case of a small-volume destructible object H1,
Although it was difficult to set the breaking direction by the conventional method, as described above, the separation distance Y of the breaking hole 20a was changed to the breaking hole 20a.
By setting the distance to be smaller than the distance Z from the object to the outer surface 30 of the object H1, the object H1 having a small volume can be accurately destroyed in the preset breaking direction.
【００２０】なお上記実施例では、破壊用孔２０ａを被
破壊物Ｈ１に直線上に配置したがこれに限定されるもの
ではなく、破壊用孔２０ａの離間距離Ｙを、破壊用孔２
０ａから被破壊物Ｈ１の外表面３０までの距離Ｚよりも
小さく設定するといった関係を維持していれば、破壊用
孔２０ａを曲線上に穿つように配置した場合であって
も、その曲線に沿って被破壊物Ｈ１を破壊できる。In the above embodiment, the breaking holes 20a are arranged in a straight line on the object to be destroyed H1, but the invention is not limited thereto.
If the relationship that the distance Z is set to be smaller than the distance Z from 0a to the outer surface 30 of the object to be destroyed H1 is maintained, even if the breaking holes 20a are arranged so as to be drilled on the curve, The object H1 can be destroyed along.
【００２１】また上記実施例では、破壊容器２を破壊用
孔２０ａに一個置きに装着したがこれに限定されるもの
ではなく、破壊装置１の破壊力を考慮して二個置きに装
着するようにしても、上記実施例と同様に、予め設定し
た方向に被破壊物Ｈ１を破壊することができる。In the above embodiment, the destruction containers 2 are mounted alternately in the destruction holes 20a. However, the present invention is not limited to this. Even in this case, similarly to the above-described embodiment, the object H1 can be destroyed in a preset direction.
【００２２】[0022]
【発明の効果】以上の説明から明らかな通り、本発明に
よれば、被破壊物に穿つ複数の破壊用孔の間隔を、各破
壊用孔から被破壊物の外表面までの距離より小さく設定
し、破壊用孔に破壊装置を装着して被破壊物を破壊する
ようにしたので、破壊装置に隣合った破壊用孔の内周面
が破壊容器に最も近い自由面となり、破壊装置において
金属細線が溶融蒸発する際の衝撃力が、各破壊用孔を結
んだ線で被破壊物を分離させる方向に働き、従って、被
破壊物が破壊用孔から外表面に向けて破壊されるのを防
止して、被破壊物を予め設定した破壊方向に正確に破壊
できる。As is apparent from the above description, according to the present invention, the interval between the plurality of breaking holes drilled in the object to be destroyed is set smaller than the distance from each breaking hole to the outer surface of the object to be destroyed. Then, a breaking device is attached to the breaking hole to break the object.The inner peripheral surface of the breaking hole adjacent to the breaking device becomes the free surface closest to the breaking container. The impact force when the thin wire melts and evaporates acts in the direction that separates the object to be destroyed at the line connecting each of the holes for destruction, so that the object to be destroyed is broken from the hole for destruction toward the outer surface. Thus, the object to be destroyed can be accurately destroyed in the preset direction of failure.
【図１】本発明の実施例を示す破壊容器の一部破断要部
正面図である。FIG. 1 is a front view of a partly broken main part of a destruction container showing an embodiment of the present invention.
【図２】同じく使用状態を示す説明図である。FIG. 2 is an explanatory view showing a state of use.
【図３】同じく破壊用孔を穿った被破壊物の平面図であ
る。FIG. 3 is a plan view of an object to be destroyed having a hole for destruction.
【図４】同じく破壊後の被破壊物の破壊状態を示す斜視
図である。FIG. 4 is a perspective view showing a destruction state of an object to be destroyed after destruction.
【図５】従来の破壊方法において破壊用孔を穿った被破
壊物の平面図である。FIG. 5 is a plan view of an object to be broken having a hole for breaking in a conventional breaking method.
１ 破壊装置 ２ 破壊容器 ３ 破壊用液 ４ 電極棒 ５ 端子 ８ 金属細線 ９ エネルギー供給回路 １０ 電源装置 １１ 制御回路 １２ 放電スイッチ １３ エネルギー蓄積回路 １５ 端子台 Ｈ１ 被破壊物 DESCRIPTION OF SYMBOLS 1 Destruction device 2 Destruction container 3 Destruction liquid 4 Electrode rod 5 Terminal 8 Metal wire 9 Energy supply circuit 10 Power supply device 11 Control circuit 12 Discharge switch 13 Energy storage circuit 15 Terminal block H1 Destructible object
───────────────────────────────────────────────────── フロントページの続き (72)発明者 前畑 英彦 大阪府大阪市此花区西九条５丁目３番28 号 日立造船株式会社内 (56)参考文献 特開 平６−235266（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E04G 23/08 B26F 3/00 B28D 1/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hidehiko Maehata 5-3-28 Nishikujo, Konohana-ku, Osaka-shi, Hitachi Zosen Corporation (56) References JP-A-6-235266 (JP, A) ( 58) Fields surveyed (Int. Cl. 7 , DB name) E04G 23/08 B26F 3/00 B28D 1/00
Claims (1)
と、該両電極間に接続された金属細線とを備えた破壊装
置を用い、コンデンサーに充電蓄積した電気エネルギー
を金属細線に供給放電し、これにより生じる金属細線の
急激な溶融気化に伴う発生衝撃力で被破壊物を破壊する
破壊方法において、被破壊物に穿つ複数の破壊用孔の間
隔を、各破壊用孔から被破壊物の外表面までの距離より
小さく設定して被破壊物を破壊することを特徴とする被
破壊物の破壊方法。An electric energy charged and stored in a capacitor is supplied and discharged to a thin metal wire using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes. In the destruction method of destroying the object to be destroyed by the impact force generated by the rapid melting and vaporization of the thin metal wire generated by the method, the distance between the plurality of holes for drilling in the object to be destroyed is changed from each fracture hole to the outer surface of the object to be destroyed. A method for destroying an object to be destroyed, characterized in that the object to be destroyed is set with a distance smaller than the distance to the object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06295438A JP3107718B2 (en) | 1994-11-30 | 1994-11-30 | How to destroy objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06295438A JP3107718B2 (en) | 1994-11-30 | 1994-11-30 | How to destroy objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08155943A JPH08155943A (en) | 1996-06-18 |
| JP3107718B2 true JP3107718B2 (en) | 2000-11-13 |
Family
ID=17820602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06295438A Expired - Fee Related JP3107718B2 (en) | 1994-11-30 | 1994-11-30 | How to destroy objects |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3107718B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005095758A1 (en) * | 2004-03-31 | 2005-10-13 | Kumagai Gumi Co., Ltd. | Discharge crushing method for crushing object to be crushed, method of excavating horizontal tunnel using discharge crushing method, and method of excavating vertical shaft |
| JP2005313149A (en) * | 2004-03-31 | 2005-11-10 | Kumagai Gumi Co Ltd | Discharge crushing method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5843528B2 (en) * | 2011-09-06 | 2016-01-13 | 日本原子力発電株式会社 | Electric discharge crushing method |
| JP5860641B2 (en) * | 2011-09-06 | 2016-02-16 | 日本原子力発電株式会社 | Electric discharge crushing method |
| JP6192445B2 (en) * | 2013-09-04 | 2017-09-06 | 日立造船株式会社 | Object surface crushing method |
-
1994
- 1994-11-30 JP JP06295438A patent/JP3107718B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005095758A1 (en) * | 2004-03-31 | 2005-10-13 | Kumagai Gumi Co., Ltd. | Discharge crushing method for crushing object to be crushed, method of excavating horizontal tunnel using discharge crushing method, and method of excavating vertical shaft |
| JP2005313149A (en) * | 2004-03-31 | 2005-11-10 | Kumagai Gumi Co Ltd | Discharge crushing method |
| JP4727256B2 (en) * | 2004-03-31 | 2011-07-20 | 株式会社熊谷組 | Electric discharge crushing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08155943A (en) | 1996-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3107718B2 (en) | How to destroy objects | |
| WO1997003797A1 (en) | Discharge destroying device and method of discharge destroy | |
| JP2980512B2 (en) | How to destroy objects | |
| JP2894940B2 (en) | Destruction equipment for destroyed objects | |
| JP2894938B2 (en) | Destruction device and destruction method of destructible object | |
| JP3103018B2 (en) | Destruction device and destruction method of destructible object | |
| JPH07317330A (en) | Demolition method of reinforced concrete structure | |
| JPH07145698A (en) | Equipment and method of breaking article to be broken | |
| WO1998054425A1 (en) | Destroying apparatus and method, and holding member for use in that method | |
| JP2894963B2 (en) | Destruction equipment for destroyed objects | |
| JP2894945B2 (en) | How to destroy objects | |
| JP3247061B2 (en) | Destruction device | |
| JP3888732B2 (en) | Destruction method | |
| JP3103019B2 (en) | Destruction device and destruction method of destructible object | |
| JPH08219698A (en) | Method of preparing metallic thin wire for demolishing apparatus | |
| JP3770663B2 (en) | Destruction method | |
| JP3888734B2 (en) | Destruction method | |
| JP3128550B2 (en) | Destruction device | |
| JP3672443B2 (en) | Destruction method | |
| JPH10323826A (en) | Breaking method | |
| JPH10331449A (en) | Destruction method | |
| JP3888733B2 (en) | Destruction method | |
| JP3167277B2 (en) | Destruction method | |
| JP3100533B2 (en) | Discharge impact destruction device | |
| JPH10266588A (en) | Destroying device and destroying method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080908 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090908 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090908 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100908 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110908 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120908 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130908 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |