JP4675849B2 - Electric discharge crushing method - Google Patents

Electric discharge crushing method Download PDF

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JP4675849B2
JP4675849B2 JP2006194594A JP2006194594A JP4675849B2 JP 4675849 B2 JP4675849 B2 JP 4675849B2 JP 2006194594 A JP2006194594 A JP 2006194594A JP 2006194594 A JP2006194594 A JP 2006194594A JP 4675849 B2 JP4675849 B2 JP 4675849B2
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discharge
groove
electrode
crushing
crushed
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JP2008018397A (en
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幸雄 垣内
真実 石口
守 平林
定雄 宇野
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Kumagai Gumi Co Ltd
Fatech Co Ltd
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Kumagai Gumi Co Ltd
Fatech Co Ltd
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Description

本発明は、放電によって破砕対象物を破砕する放電破砕方法に関する。   The present invention relates to a discharge crushing method for crushing a crushing object by electric discharge.

岩石、岩盤、コンクリート構造物などの破砕対象物を破砕するために放電破砕装置を用いた放電破砕方法が知られている(特許文献1;2参照)。
放電破砕装置50Aは、図7に示すように、パルスパワー源80、発電機等の電源部81、電極装置70を備える。
パルスパワー源80は、大容量のコンデンサ82及びスイッチ83,84を備えた回路により形成される。図示しないが、パルスパワー源80の回路は接地(アース)されている。
電源部81は、コンデンサ82の一方の極82bに接続されるとともにコンデンサ82の他方の極82aにスイッチ83を介して接続される。
電極装置70は、コンデンサ82の一方の極82bに接続された一方電極とコンデンサ82の他方の極82aにスイッチ84を介して接続された他方電極とこれら一方電極と他方電極とを絶縁する絶縁体とで形成される。例えば、+電極のような一方電極としての棒状の内部導体73と、内部導体73の外周囲を被覆する筒状の絶縁体74と、絶縁体74の外周囲に設けられた−電極のような他方電極としての外部導体75とにより構成される。即ち、電極装置70は、内部導体73と絶縁体74と外部導体75とが同軸状に配置された構成の同軸電極装置である。内部導体73及び外部導体75は、コネクタ72及び接続ケーブル71によりパルスパワー源80に接続される。
外部導体75は、内部導体73の中心線に沿った方向に間隔を隔てて設けられた複数の浮遊電極76を構成する。浮遊電極76とは、電源側と電気的に絶縁された電極のことである。
絶縁体74の先端74tより突出して露出する内部導体73の先端部により形成された先端電極73tとこの先端電極73tに最も近い浮遊電極76である先端側浮遊電極76tとの間で先端側放電ギャップ77が形成され、互いに対向する浮遊電極76同士の端部76sと端部76sとの間で中間側放電ギャップ78が形成される。中間側放電ギャップ78は複数形成される。
先端側放電ギャップ77を隔てて配置された先端電極73tと先端側浮遊電極76tとによって放電部が形成される。中間側放電ギャップ78を隔てて配置された浮遊電極76と浮遊電極76とによって放電部が形成される。即ち、電極装置は、複数の放電部を備える。
以上の構成の放電破砕装置50Aを用いた放電破砕方法を説明する。破砕対象物60に孔61を形成し、スイッチ84及びスイッチ83の非導通の状態で孔61内に水などの電解液63を注入してこの電解液63中に電極装置70の放電部を挿入する。スイッチ83を導通してコンデンサ82に電源部81からの電荷を蓄積させる。そして、スイッチ84を導通させて電極装置70の放電部の電極に電圧を印加して放電させることによって破砕対象物60を破砕する。
図示しないが、板状の破砕対象物の面と電極装置の放電部とを対向させ、放電部を取り囲むようにゼリー状の非圧縮体を設け、放電部の電極に電圧を印加して放電させることによって破砕対象物を破砕する方法も知られている(特許文献3参照)。
特開2003−311175号公報 特開2003−320268号公報 特開2005−161151号公報
An electric discharge crushing method using an electric discharge crushing device for crushing a crushing object such as a rock, bedrock, concrete structure or the like is known (see Patent Documents 1 and 2).
As shown in FIG. 7, the electric discharge crushing device 50 </ b> A includes a pulse power source 80, a power supply unit 81 such as a generator, and an electrode device 70.
The pulse power source 80 is formed by a circuit including a large-capacitance capacitor 82 and switches 83 and 84. Although not shown, the circuit of the pulse power source 80 is grounded.
The power supply unit 81 is connected to one pole 82 b of the capacitor 82 and is connected to the other pole 82 a of the capacitor 82 via a switch 83.
The electrode device 70 includes an insulator that insulates the one electrode connected to one electrode 82b of the capacitor 82, the other electrode connected to the other electrode 82a of the capacitor 82 via the switch 84, and the one electrode from the other electrode. And formed. For example, a rod-like inner conductor 73 as one electrode such as a + electrode, a cylindrical insulator 74 covering the outer periphery of the inner conductor 73, and a-electrode provided around the outer periphery of the insulator 74 It comprises an external conductor 75 as the other electrode. That is, the electrode device 70 is a coaxial electrode device having a configuration in which the inner conductor 73, the insulator 74, and the outer conductor 75 are coaxially arranged. The inner conductor 73 and the outer conductor 75 are connected to the pulse power source 80 by the connector 72 and the connection cable 71.
The outer conductor 75 constitutes a plurality of floating electrodes 76 provided at intervals in a direction along the center line of the inner conductor 73. The floating electrode 76 is an electrode that is electrically insulated from the power supply side.
A tip-side discharge gap between the tip electrode 73t formed by the tip of the internal conductor 73 protruding and exposed from the tip 74t of the insulator 74 and the tip-side floating electrode 76t that is the floating electrode 76 closest to the tip electrode 73t. 77 is formed, and an intermediate discharge gap 78 is formed between the end 76s and the end 76s of the floating electrodes 76 facing each other. A plurality of intermediate discharge gaps 78 are formed.
A discharge portion is formed by the tip electrode 73t and the tip side floating electrode 76t arranged with the tip side discharge gap 77 therebetween. A discharge portion is formed by the floating electrode 76 and the floating electrode 76 arranged with the intermediate discharge gap 78 therebetween. That is, the electrode device includes a plurality of discharge units.
A discharge crushing method using the discharge crushing apparatus 50A having the above configuration will be described. A hole 61 is formed in the object 60 to be crushed, and an electrolytic solution 63 such as water is injected into the hole 61 with the switch 84 and the switch 83 being in a non-conductive state, and the discharge part of the electrode device 70 is inserted into the electrolytic solution 63. To do. The switch 83 is turned on to cause the capacitor 82 to accumulate charges from the power supply unit 81. Then, the object to be crushed 60 is crushed by causing the switch 84 to conduct and applying a voltage to the electrode of the discharge part of the electrode device 70 to discharge it.
Although not shown, the surface of the plate-shaped crushing object and the discharge part of the electrode device are opposed to each other, a jelly-like uncompressed body is provided so as to surround the discharge part, and a voltage is applied to the electrode of the discharge part to cause discharge. There is also known a method of crushing a crushing object (see Patent Document 3).
JP 2003-31175 A JP 2003-320268 A JP-A-2005-161151

特許文献1;2に示された従来技術のように、破砕対象物60に孔61を形成して、孔61内に電極装置70の放電部を設置して放電させる方法では、破砕対象物60に多数の孔61を形成する必要があり、多数の孔61を形成する作業が煩わしいという課題があった。
また、特許文献3に示された従来技術では、放電により生じた圧力が破砕対象物の面に加わらず、面より離れる方向に逃げてしまうので、破砕効率が悪いという課題があった。
In the method of forming the hole 61 in the crushing object 60 and installing the discharge part of the electrode device 70 in the hole 61 to discharge the crushing object 60 as in the prior art disclosed in Patent Documents 1 and 2; It is necessary to form a large number of holes 61, and there is a problem that the work of forming the large number of holes 61 is troublesome.
Moreover, in the prior art shown by patent document 3, since the pressure which generate | occur | produced by discharge is not added to the surface of a crushing target object, but escapes in the direction away from a surface, there existed a subject that crushing efficiency was bad.

本発明による放電破砕方法は、破砕対象物の面に溝壁と溝底と溝壁と溝底との境界である角部とを備えた溝を形成し、溝内に電極装置の放電部を設置するとともに放電部を取り囲む圧力伝達媒体としての水や電解液を充填し、放電部が設置され水や電解液が充填された溝の開口を重りで塞ぐとともに破砕対象物の溝が形成された面と重りとの間に密着性維持材を設けた後、放電部の電極に電圧を印加して放電させることによって破砕対象物を破砕すること特徴とする Discharge breaking method according to the invention, a groove and a corner portion which is the boundary between the groove wall on the surface of the crushing object and the groove bottom and the groove wall and the groove bottom is formed, the discharge portion of the electrode device in the groove filled with water or the electrolytic solution as a pressure transmission medium surrounding the discharge portion with placing the groove of busy Gutotomoni crushed object an opening of the groove the discharge portion is installed water or electrolyte solution filled in weight after There is provided an adhesion maintaining material between the formed surface and a weight, characterized by crushing the crushed object by discharging by applying a voltage to the electrodes of the discharge portion.

本発明の放電破砕方法によれば、溝部の角部がひび割れの起点となって破砕対象物にひび割れが生じやすくなるので、破砕対象物を効果的に破砕できる。 According to the discharge crushing method of the present invention, since the corner portion of the groove portion is the starting point of cracking, the crushing object is likely to be cracked, so that the crushing object can be effectively crushed.

最良の形態1
図1乃至図3は本発明の最良の形態1を示し、図1は放電破砕装置及び破砕対象物を示し、図2は放電破砕方法の工程を示し、図3は放電破砕後のコンクリート版の破砕状態を示す。
Best form 1
1 to 3 show the best mode 1 of the present invention, FIG. 1 shows a discharge crushing apparatus and a crushing object, FIG. 2 shows the steps of a discharge crushing method, and FIG. 3 shows a concrete plate after discharge crushing. The crushed state is shown.

図1を参照し、放電破砕装置及び破砕対象物を説明する。
放電破砕装置1は、電源装置2、電極装置3を備える。
破砕対象物としての平板状のコンクリート版4は、例えば、縦の長さaが500mm、横の長さbが400mm、厚さdが140mmである。縦500mm、横400mmの表裏2つの面としての方形の面5;6のうち、上に向ける一方の面5には、例えば、幅eが20mm〜25mm程度、深さfが50mm程度の溝7が形成される。溝7は、一方の面5において互いに相対峙する一方の縁部8から他方の縁部9まで連続して延長し、上部10及び両縁部11;11が開口する形状である。
本発明で定義する溝とは、溝の延長方向の長さ、即ち、溝長a(ここでは縦の長さaと同じ)が、幅eより長く形成された溝のことを言う。
本発明で定義する平板状とは、上述した厚さdが、縦の長さaや横の長さbよりも短い寸法の平板形状のことを言う。厚さdは均一でも均一でなくてもよい。
With reference to FIG. 1, an electric discharge crushing apparatus and a crushing object are demonstrated.
The electric discharge crusher 1 includes a power supply device 2 and an electrode device 3.
The flat concrete plate 4 as the object to be crushed has, for example, a vertical length a of 500 mm, a horizontal length b of 400 mm, and a thickness d of 140 mm. Of the rectangular surfaces 5 as the two front and back surfaces of 500 mm in length and 400 mm in width, one of the surfaces 5 facing upward is a groove 7 having a width e of about 20 mm to 25 mm and a depth f of about 50 mm, for example. Is formed. The groove 7 has a shape that continuously extends from one edge 8 that faces each other to the other edge 9 on one surface 5, and the upper part 10 and both edges 11; 11 open.
The groove defined in the present invention refers to a groove formed with a length in the extending direction of the groove, that is, a groove length a (here, the same as the vertical length a) longer than the width e.
The flat plate shape defined in the present invention refers to a flat plate shape in which the thickness d described above is shorter than the vertical length a and the horizontal length b. The thickness d may be uniform or not uniform.

電源装置2は、パルスパワー源16、昇圧部17、電極接続部18を備える。
パルスパワー源16は、コンデンサ20及びスイッチ21,22を備えた回路19により形成される。図示しないが、パルスパワー源16の回路19は接地(アース)されている。
昇圧部17は、コンデンサ20の一方の極23に接続されるとともにコンデンサ20の他方の極24にスイッチ21を介して接続される。コンデンサ20の容量は例えば200μF(マイクロファラッド)である。
電極接続部18は、パルスパワー源16の筐体25に設けられる。一方の電極接続部18aは、コンデンサ20の一方の極23に接続される。他方の電極接続部18bは、コンデンサ20の他方の極24にスイッチ22を介して接続される。
最良の形態では、スイッチ22、スイッチ21がともに非導通の状態で、例えば、図外の電源コードを経由して昇圧部17に交流200V電源が供給され、交流200Vが昇圧部17で直流22kVに昇圧される。そして、スイッチ21を導通すると、コンデンサ20に電荷が蓄積される。コンデンサ20に電荷が蓄積された後に、スイッチ22を導通すると、電極装置3の放電部30の電極35;36間で放電を生じる。
The power supply device 2 includes a pulse power source 16, a booster 17, and an electrode connector 18.
The pulse power source 16 is formed by a circuit 19 including a capacitor 20 and switches 21 and 22. Although not shown, the circuit 19 of the pulse power source 16 is grounded.
Booster 17 is connected to one pole 23 of capacitor 20 and to the other pole 24 of capacitor 20 via switch 21. The capacity of the capacitor 20 is, for example, 200 μF (microfarad).
The electrode connecting portion 18 is provided in the housing 25 of the pulse power source 16. One electrode connection portion 18 a is connected to one pole 23 of the capacitor 20. The other electrode connection portion 18 b is connected to the other pole 24 of the capacitor 20 via the switch 22.
In the best mode, the switch 22 and the switch 21 are both in a non-conducting state. For example, the AC 200V power is supplied to the booster 17 via a power cord (not shown), and the AC 200V is changed to 22 kV by the booster 17. Boosted. When the switch 21 is turned on, charge is accumulated in the capacitor 20. When the switch 22 is turned on after the electric charge is accumulated in the capacitor 20, a discharge is generated between the electrodes 35; 36 of the discharge unit 30 of the electrode device 3.

放電用の電極装置3は、電線37、放電部30、締結バンドのような間隔維持材31、コネクタ40を備える。電線37は、例えば線径2mm〜3mm程度の銅線のような導体線の周囲がビニル樹脂などの樹脂で被覆された線径4mm〜5mm程度の、いわゆる被覆線により形成される。
放電部30は、放電ギャップとなる所定の間隔gを隔てて互いに対向するよう配置された一対の電極35;36と、一対の電極35;36を所定の間隔gを隔てて互いに対向する状態に維持する間隔維持材31とにより形成される。一対の電極35;36は電線37の端部により形成される。
電極装置3は放電部30を1つ以上備える。複数の放電部30が直列状に形成される場合には、直列の一方の最端側の電極35Aを形成する電線37Aが、当該電極35Aとは反対側の端部に設けられたコネクタ40Aを介して電源装置2の一方の電極接続部18aに接続されるとともに、直列の他方の最端側の電極36Bを形成する電線37Bが、当該電極36Bとは反対側の端部に設けられたコネクタ40Bを介して電源装置2の他方の電極接続部18bに接続される。図示しないが、放電部30が1つの場合には、当該放電部30の一方の電極を形成する電線が、当該電極とは反対側の端部に設けられたコネクタを介して電源装置2の一方の電極接続部18aに接続されるとともに、放電部30の他方の電極を形成する電線が、当該電極とは反対側の端部に設けられたコネクタを介して電源装置2の他方の電極接続部18bに接続される。
The discharge electrode device 3 includes an electric wire 37, a discharge unit 30, a gap maintaining material 31 such as a fastening band, and a connector 40. The electric wire 37 is formed of a so-called covered wire having a wire diameter of about 4 mm to 5 mm in which a conductor wire such as a copper wire having a wire diameter of about 2 mm to 3 mm is covered with a resin such as vinyl resin.
The discharge part 30 is in a state in which the pair of electrodes 35; 36 disposed so as to face each other with a predetermined gap g serving as a discharge gap and the pair of electrodes 35; 36 face each other with a predetermined gap g. It forms with the space | interval maintenance material 31 to maintain. The pair of electrodes 35; 36 is formed by the ends of the electric wires 37.
The electrode device 3 includes one or more discharge units 30. When the plurality of discharge portions 30 are formed in series, the electric wire 37A that forms one end electrode 35A in the series is connected to the connector 40A provided at the end opposite to the electrode 35A. The electric wire 37B which forms the other end electrode 36B in series and is connected to the one electrode connecting portion 18a of the power supply device 2 via the connector is provided at the end opposite to the electrode 36B. It is connected to the other electrode connection part 18b of the power supply device 2 through 40B. Although not shown, in the case where there is one discharge unit 30, one of the power supply devices 2 is connected to an electric wire forming one electrode of the discharge unit 30 via a connector provided at an end opposite to the electrode. The other electrode connecting portion of the power supply device 2 is connected to the electrode connecting portion 18a of the power supply device 2 via a connector provided at the end opposite to the electrode. 18b.

放電部30の形成方法としては、例えば、両端にコネクタ40を備えた1本の電線37の中間部を境として電線37の一端側を電線37の他端側に折り返し、電線37の中間部側において、電線37の一端側と電線37の他端側とを複数箇所で間隔維持材31により縛って束ねる。間隔維持材31で縛る箇所は、電極35;36を形成する位置に合わせる。即ち、放電用ギャップとなる所定の間隔gより少し広い間隔を隔てた2箇所を間隔維持材31で縛り付ける。そして、この2箇所に縛り付けた一対の間隔維持材31;31の間にある電線37の一端側又は他端側のうちのいずれか一方を切断して放電ギャップを形成することによって放電部30を形成できる(図1のA部拡大図参照)。このような放電部30を1つ以上形成すればよい。   As a method for forming the discharge unit 30, for example, one end side of the electric wire 37 is folded back to the other end side of the electric wire 37 with the intermediate portion of the single electric wire 37 provided with the connectors 40 at both ends as a boundary. 1, the one end side of the electric wire 37 and the other end side of the electric wire 37 are bound and bundled by the spacing maintaining material 31 at a plurality of locations. Locations to be bound by the spacing material 31 are adjusted to positions where the electrodes 35 and 36 are formed. In other words, the gap maintaining material 31 binds two places separated by a gap slightly wider than the predetermined gap g serving as a discharge gap. And the discharge part 30 is formed by cutting either one of the one end side or the other end side of the electric wire 37 between the pair of spacing members 31; 31 tied to the two places to form a discharge gap. It can be formed (see an enlarged view of part A in FIG. 1). One or more such discharge portions 30 may be formed.

図2を参照し、放電破砕方法を説明する。図2(a)は溝7内に電極装置3の放電部30と放電部30を取り囲む圧力伝達媒体としての非圧縮体42とが設けられ、溝7の両縁部11;11の開口がパテなどの充填塞材41により塞がれた状態の溝の部分を溝の延長方向に沿って切断した断面図、図2(b)は図2(a)の状態のコンクリート版4の面5の上に被せ材を被せた状態を溝7の延長方向と直交する方向に沿って切断した断面図、図2(c)は放電破砕されたコンクリート版4を示す図である。まず、コンクリート版4の一方の面5に上述した溝7を形成する。溝7は、例えば、円盤状のカッターを回転させてコンクリートを切削する図外のコンクリートカッターと呼ばれるような切削工具を用いて形成する。円盤状の2枚のカッターを備えた図外のコンクリートカッターを用いれば、幅eの広い溝7を一度に形成できるので、幅eの広い溝7を効率的に形成できる。2枚のカッターを備えたコンクリートカッターは、例えば、円形板の円形面を互いに平行に対向させて円の中心を一直線状に通過する回転中心軸を回転中心として回転可能に設けられた2枚のカッターを備えた構成により実現される。そして、図2(a)のように、溝7を形成した面5が上にくるように面6を地面などの設置部99に向けてコンクリート版4を設置部99に設置する。面5に形成された溝7内に電極装置3の放電部30を設置し、溝7の両縁部11;11の開口をパテなどの充填塞材41により塞ぐ。両縁部11;11の塞がれた溝7内に、圧力伝達媒体としての非圧縮体42を充填して、放電部30を非圧縮体42で取り囲む。即ち、溝7内に設置された放電部30の回りを非圧縮体42で埋める。溝7内に非圧縮体42を充填した後に、この非圧縮体42中に放電部30を埋めてもよい。非圧縮体42としては、水や水溶液のような電解液を用いる。そして、図2(b)のように、上に向けた一方の面5の上に被せ材としての重り43を載せて溝7の上部10の開口を塞いだ後に、電源装置2を起動する。所定時間だけ電源装置2のスイッチ22を非道通とするとともにスイッチ21を導通してコンデンサ20に電荷を蓄積させる。上記所定時間経過後にスイッチ22を導通すると、電極装置3の放電部30の電極35;36に電圧が印加されて、放電部30で放電を生じる。この放電によるエネルギーによって押圧された非圧縮体が溝7の内面(溝壁45及び溝底46)を押圧することによってコンクリート版4を破砕したり、放電によるエネルギーによって非圧縮体42の一部が気化することで体積膨張して溝7の内面を押圧することによってコンクリート版4を破砕する。即ち、放電の際に発生するエネルギーにより生じた圧力によってコンクリート版4が破砕される。
尚、重り43は、放電の際に発生するエネルギーによって生じた圧力を受けても浮き上がらない重量のものを用いれば、放電の際に発生するエネルギーによって生じた圧力が溝7の外に漏れることなく溝7の内面に加わるので、より効果的である。
即ち、コンクリート版4の一方の面5に溝7を形成し、溝7内に電極装置3の放電部30と放電部30を取り囲む非圧縮体42とを設け、放電部30及び非圧縮体42の設置された溝7の両縁部11;11の開口を充填塞材41により塞ぐとともに、溝7の上部10の開口を被せ材としての重り43によって塞いだ状態で、放電部30の電極35;36に電圧を印加して放電させることによってコンクリート版4を破砕する。
The electric discharge crushing method will be described with reference to FIG. In FIG. 2A, the discharge portion 30 of the electrode device 3 and the non-compressed body 42 as a pressure transmission medium surrounding the discharge portion 30 are provided in the groove 7, and the openings of both edges 11; Sectional drawing which cut | disconnected the part of the groove | channel of the state obstruct | occluded with the filling obstruction | occlusion materials 41, such as along the extension direction of a groove | channel, FIG.2 (b) is the surface 5 of the concrete plate 4 of the state of Fig.2 (a). Sectional drawing which cut | disconnected the state which covered the covering material on along the direction orthogonal to the extension direction of the groove | channel 7, FIG.2 (c) is a figure which shows the concrete plate 4 by which electric discharge crushing was carried out. First, the groove 7 described above is formed on one surface 5 of the concrete plate 4. The groove 7 is formed using, for example, a cutting tool called a concrete cutter (not shown) that cuts concrete by rotating a disk-shaped cutter. If a non-illustrated concrete cutter provided with two disc-shaped cutters is used, the wide groove 7 with a wide width e can be formed at a time, and therefore the wide groove 7 with a wide width e can be efficiently formed. The concrete cutter provided with two cutters is, for example, two pieces provided so as to be rotatable about a rotation center axis passing through the center of the circle in a straight line with the circular surfaces of the circular plates facing each other in parallel. This is realized by a configuration including a cutter. Then, as shown in FIG. 2A, the concrete plate 4 is installed on the installation unit 99 with the surface 6 facing the installation unit 99 such as the ground so that the surface 5 on which the groove 7 is formed faces up. The discharge part 30 of the electrode device 3 is installed in the groove 7 formed on the surface 5, and the openings of both edges 11; 11 of the groove 7 are closed with a filling plug 41 such as a putty. The non-compressed body 42 as a pressure transmission medium is filled in the groove 7 closed by the both edges 11; 11, and the discharge part 30 is surrounded by the uncompressed body 42. That is, the periphery of the discharge part 30 installed in the groove 7 is filled with the non-compressed body 42. After filling the non-compressed body 42 in the groove 7, the discharge part 30 may be buried in the non-compressed body 42. As the non-compressed body 42, an electrolytic solution such as water or an aqueous solution is used. Then, as shown in FIG. 2 (b), after placing a weight 43 as a covering material on one surface 5 facing upward to close the opening of the upper portion 10 of the groove 7, the power supply device 2 is started. The switch 22 of the power supply device 2 is turned off for a predetermined time, and the switch 21 is turned on to accumulate the electric charge in the capacitor 20. When the switch 22 is turned on after the predetermined time has elapsed, a voltage is applied to the electrodes 35; 36 of the discharge unit 30 of the electrode device 3, and discharge occurs in the discharge unit 30. The non-compressed body pressed by the energy generated by the discharge presses the inner surface (the groove wall 45 and the groove bottom 46) of the groove 7 to crush the concrete plate 4, or a part of the non-compressed body 42 is generated by the energy generated by the discharge. The concrete plate 4 is crushed by expanding the volume by vaporizing and pressing the inner surface of the groove 7. That is, the concrete plate 4 is crushed by the pressure generated by the energy generated during discharge.
If the weight 43 is of a weight that does not lift even when subjected to the pressure generated by the energy generated during discharge, the pressure generated by the energy generated during discharge does not leak out of the groove 7. Since it is added to the inner surface of the groove 7, it is more effective.
That is, the groove 7 is formed on one surface 5 of the concrete plate 4, the discharge part 30 of the electrode device 3 and the non-compressed body 42 surrounding the discharge part 30 are provided in the groove 7, and the discharge part 30 and the non-compressed body 42 are provided. The electrodes 35 of the discharge unit 30 are closed in a state where the openings of both edges 11; 11 of the groove 7 in which are installed are closed by the filling plug 41 and the opening of the upper part 10 of the groove 7 is closed by the weight 43 as a covering material. The concrete plate 4 is crushed by applying a voltage to 36 and discharging.

最良の形態1によれば、放電部30の設置された溝7の両縁部11;11の開口をパテなどの充填塞材41により塞ぐとともに、重り43により溝7の上部10の開口を塞ぐことによって、放電の際に発生するエネルギーによって生じた圧力が溝7の外に漏れにくいように構成してから放電を行うので、放電の際に発生するエネルギーによって生じた圧力が溝7の内面に加わるようになる。この内面に加わる圧力が、コンクリート版4のコンクリートを自由面となる側面4s側に移動させる力となってコンクリートに伝わることにより、コンクリートにひび割れ(亀裂)Dが生じてコンクリート版4が破砕する。また、溝7が、図1;2に示すように、溝壁45と溝底46との境界である角部47を備えるため、角部47がひび割れDの起点となってコンクリートにひび割れDを生じやすくなるので、コンクリート版4を効果的に破砕できる。   According to the best mode 1, the openings of both edges 11; 11 of the groove 7 where the discharge part 30 is installed are closed by the filling plug 41 such as putty, and the opening of the upper part 10 of the groove 7 is closed by the weight 43. Accordingly, the discharge is performed after the pressure generated by the energy generated during the discharge is made difficult to leak out of the groove 7, so that the pressure generated by the energy generated during the discharge is applied to the inner surface of the groove 7. Come to join. The pressure applied to the inner surface is transmitted to the concrete as a force that moves the concrete of the concrete plate 4 to the side surface 4s, which is a free surface, whereby cracks (cracks) D are generated in the concrete and the concrete plate 4 is crushed. In addition, as shown in FIGS. 1 and 2, since the groove 7 includes a corner portion 47 that is a boundary between the groove wall 45 and the groove bottom 46, the corner portion 47 becomes a starting point of the crack D, and the crack D is formed in the concrete. Since it becomes easy to occur, the concrete plate 4 can be effectively crushed.

また、厚さdが縦の長さaや横の長さbよりも短い寸法に形成された平板状のコンクリート版4を破砕対象物としたことで、厚さdの短いコンクリート版4を電線37による電極装置3の放電部30での放電により破砕でき、電源装置2のコンデンサ20の容量を小さくできて、電源装置2の省コスト化が図れる。   Further, the flat concrete plate 4 having a thickness d shorter than the vertical length a and the horizontal length b is used as the object to be crushed. 37 can be crushed by the discharge in the discharge unit 30 of the electrode device 3, the capacity of the capacitor 20 of the power supply device 2 can be reduced, and the cost of the power supply device 2 can be reduced.

図7に示した従来の放電破砕方法でコンクリート版4を細かく破砕しようとする場合、図4((a)図は平面図、(b)図は(a)図のA−A断面図)に示すように、コンクリート版4に一方の面5から他方の面6の方向に延長する孔61を多数形成した後に、適当な孔61内に水と電極装置70の放電部とを入れて放電させることによってコンクリート版4を破砕したり、孔61を、一方の面5の縁部に近い側から1つずつ形成して行ってその孔61内で放電を行わせてコンクリート版4の縁部側から順番に破砕していく必要がある。即ち、一方の面5に多数の孔61を形成する必要があり、多数の孔61を形成する作業が煩わしい。   When the concrete plate 4 is to be finely crushed by the conventional electric discharge crushing method shown in FIG. 7, FIG. 4 ((a) is a plan view, and (b) is a cross-sectional view taken along the line AA in FIG. As shown, after many holes 61 extending in the direction from one surface 5 to the other surface 6 are formed in the concrete plate 4, water and a discharge part of the electrode device 70 are put into an appropriate hole 61 and discharged. The concrete plate 4 is crushed or the holes 61 are formed one by one from the side close to the edge of the one surface 5 to cause discharge in the hole 61 and the edge side of the concrete plate 4 It is necessary to crush in order. That is, it is necessary to form a large number of holes 61 on one surface 5, and the work of forming a large number of holes 61 is troublesome.

一方、最良の形態による放電破砕方法によれば、一方の面5に溝7を1つ又は少数形成して、溝7内での放電により、例えば、図3に示すように、コンクリート版4を効率的に細かく破砕でき、多数の孔61を形成する場合に比べて作業を簡単にできる。
特に、コンクリート版4のような平板状の破砕対象物を破砕する場合は、面に少数の溝7を形成して、溝7内で放電を行わせることによってコンクリート版4を効率的に細かく破砕できる。
On the other hand, according to the electric discharge crushing method according to the best mode, one or a small number of grooves 7 are formed on one surface 5 and, for example, as shown in FIG. The work can be efficiently and finely crushed, and the operation can be simplified as compared with the case where a large number of holes 61 are formed.
In particular, when crushing a flat crushing object such as the concrete plate 4, the concrete plate 4 is efficiently and finely crushed by forming a small number of grooves 7 on the surface and causing discharge in the grooves 7. it can.

また、図7に示した従来の放電破砕方法では、コンクリート版4の厚さ寸法が比較的小さい場合は、孔61の深さ寸法t(図4(b)参照)も小さくなり、電極装置70の放電部や非圧縮体を収納するための孔61内の大きさも小さくなるので、電極装置70の放電部が孔61内に入らない場合は、コンクリート版4を破砕できなくなる。電極装置70の放電部が孔61内に入ったとしても孔61内に入る電極装置70の放電部の数が少なくなってしまって、1つ1つの孔61内での放電により生じる圧力は小さくなるので、一方の面5に多数の孔61を形成して、いくつかの個々の孔61内で1回ずつ順番に放電を行わなければならず、多数の孔61を形成する作業及び放電作業が煩わしくなる。   In the conventional electric discharge crushing method shown in FIG. 7, when the thickness dimension of the concrete plate 4 is relatively small, the depth dimension t (see FIG. 4B) of the hole 61 is also reduced, and the electrode device 70. Accordingly, the size of the discharge portion and the hole 61 for accommodating the non-compressed body is also reduced. Therefore, when the discharge portion of the electrode device 70 does not enter the hole 61, the concrete plate 4 cannot be crushed. Even if the discharge part of the electrode device 70 enters the hole 61, the number of discharge parts of the electrode device 70 that enter the hole 61 decreases, and the pressure generated by the discharge in each hole 61 is small. Therefore, it is necessary to form a large number of holes 61 on one surface 5 and to discharge each of the individual holes 61 in order one by one. Becomes annoying.

尚、重り43と、面5側に向けられる重り43の一面に設けられたゴムシートやウレタンシートのような密着性維持材とで構成された被せ材を用い、被せ材の密着性維持材を面5側に向けて面5に被せ材を被せれば、面5と密着性維持材との密着性が向上し、面5と密着性維持材との間から圧力が抜けるようなこと(圧力漏れ)を防止でき、コンクリート版4を効率的に破砕できる。   In addition, using the covering material comprised by the weight 43 and the adhesion maintenance material like the rubber sheet and urethane sheet provided in one surface of the weight 43 orient | assigned to the surface 5, the adhesion maintenance material of a covering material is used. If the surface 5 is covered with the covering material toward the surface 5, the adhesion between the surface 5 and the adhesion maintaining material is improved, and the pressure is released from between the surface 5 and the adhesion maintaining material (pressure Leakage) can be prevented, and the concrete plate 4 can be efficiently crushed.

最良の形態2
図5を参照し、最良の形態2について説明する。図5(a);図5(c)は平面図、図5(b)は図5(a)のA−A断面図である。
破砕対象物が、縁の切れていないコンクリート構造体4A、例えば、道路や橋の床を形成する床版、既設建設物の床や壁などの場合、コンクリート構造体4Aの縁の切れていない一方の面5Aに設けた溝7(以下、最良の形態2では放電溝という)の近傍に自由面を形成する溝79(以下、最良の形態2では自由溝という)を設ける。即ち、自由溝79の内面が自由面となる。例えば、図5(a)や図5(b)のように、自由溝79と放電溝7とを並べて形成したり、図5(c)のように、一方の面5Aにおいて放電溝7を取り囲むように自由溝79を形成する。自由溝79は放電溝7より所定の距離Wを隔てた場所に形成する。距離Wは、放電溝7内での放電の際に発生するエネルギーによって生じた圧力が自由面に及び得る距離に決める。自由溝79の溝幅Pは放電溝7の溝幅eより小さくてよく、例えば5mm程度でよい。
最良の形態2によれば、放電溝7内での放電の際に発生するエネルギーによって生じた圧力が自由溝79の自由面に及ぶことによってコンクリート構造体4Aを効率的に破砕できる。
図示しないが、自由溝79は、一方の面5Aから他方の面6Aの方向に向けて斜めに延長するよう形成された溝であってもよい。
また、図5(b)に示す自由溝79の深さQは、深くした方が自由面の面積を大きくできるので好ましく、放電溝7の深さR以上とすれば自由面を他方の面6の近くまで形成できて好ましい。
図5の自由溝79の代わりに放電溝7としても利用する図外の兼用溝を形成し、放電溝7での放電の際に当該兼用溝の内面を自由面として機能させてもよい。
尚、コンクリート構造体4Aの一方の面5Aから他方の面6Aまでの距離、即ち、コンクリート構造体4Aの厚さV(図5(b)参照)が薄く、面6Aが自由面として機能する場合には、自由溝79を形成しなくても良い。
Best form 2
The best mode 2 will be described with reference to FIG. 5 (a); FIG. 5 (c) is a plan view, and FIG. 5 (b) is a cross-sectional view taken along line AA of FIG. 5 (a).
When the object to be crushed is a concrete structure 4A with no edges, such as a floor slab that forms the floor of a road or a bridge, a floor or a wall of an existing construction, one of the edges of the concrete structure 4A is not cut. A groove 79 (hereinafter referred to as a free groove in the best mode 2) is provided in the vicinity of the groove 7 (hereinafter referred to as a discharge groove in the best mode 2) provided on the surface 5A. That is, the inner surface of the free groove 79 becomes a free surface. For example, the free groove 79 and the discharge groove 7 are formed side by side as shown in FIGS. 5A and 5B, or the discharge groove 7 is surrounded on one surface 5A as shown in FIG. 5C. Thus, the free groove 79 is formed. The free groove 79 is formed at a location separated from the discharge groove 7 by a predetermined distance W. The distance W is determined such that the pressure generated by the energy generated during the discharge in the discharge groove 7 can reach the free surface. The groove width P of the free groove 79 may be smaller than the groove width e of the discharge groove 7, for example, about 5 mm.
According to the best mode 2, the concrete structure 4A can be efficiently crushed by the pressure generated by the energy generated during the discharge in the discharge groove 7 reaching the free surface of the free groove 79.
Although not shown, the free groove 79 may be a groove formed so as to extend obliquely from the one surface 5A toward the other surface 6A.
Further, the depth Q of the free groove 79 shown in FIG. 5 (b) is preferably increased because the area of the free surface can be increased. If the depth Q is equal to or greater than the depth R of the discharge groove 7, the free surface becomes the other surface 6. It is preferable that it can be formed up to near.
It is also possible to form a dual-purpose groove (not shown) that is also used as the discharge groove 7 in place of the free groove 79 in FIG. 5 and to make the inner surface of the dual-purpose groove function as a free surface when discharging in the discharge groove 7.
When the distance from one surface 5A of the concrete structure 4A to the other surface 6A, that is, the thickness V of the concrete structure 4A (see FIG. 5B) is thin, and the surface 6A functions as a free surface. In this case, the free groove 79 may not be formed.

最良の形態3
最良の形態1では、電極装置3の放電部30を溝7内に設置したが、コンクリート版4の面5に溝7を形成することなく、コンクリート版4の面5に電極装置3の放電部30と放電部30を取り囲む非圧縮体42とを設け、放電部30及び非圧縮体42を被せ材で覆った状態で、放電部30の電極に電圧を印加して放電させることによってコンクリート版4を破砕するようにしてもよい。
上記被せ材として、面5側に向けられる面に、放電部30及び非圧縮体42を収納するために溝7と同じような溝により形成された収納部を備えた重りを用いることによって、重りの面における収納部の周りが面5と接触する接触面となるため、重りの面とコンクリート版4の面5との間から圧力が抜けるようなことを防止でき、コンクリート版4を効率的に破砕できる。
また、例えば図6に示すように、重り43と、面5側に向けられる重り43の一面に設けられたゴムシートやウレタンシートのような密着性維持材43Aとで構成され、密着性維持材43Aの面5側に向けられる面43aに放電部30及び非圧縮体42を収納するために溝7と同じような溝により形成された収納部43bを備えた被せ材43Xを用い、この被せ材43Xの密着性維持材43A側を面5側に向けて面5に被せ材43Xを被せるようにすれば、収納部43bの周りの密着性維持材43Aが面5と密着状態に接触する接触面43cとなって密着性維持材43Aと面5との密着性が向上し、面5と密着性維持材43Aとの間から圧力が抜けるようなことを防止できて、コンクリート版4を効率的に破砕できる。
尚、重り43と密着性維持材43Aとを備え、密着性維持材43Aの面5側に向けられる面43aに収納部43bを形成する溝が予め形成されていない構成の被せ材を用いてもよい。このような被せ材を用いた場合でも、重り43の重量を大きくしたり、密着性維持材43Aとして柔らかい材質のものを用いたりすることによって、密着性維持材43Aの面5側の面43aが、重り43の圧力と電線37の圧力とで押圧されて窪むことによって密着性維持材43Aの面5側の面43aに収納部43bが形成され、密着性維持材43Aの面5側の面43aにおける収納部43bの周りの密着性維持材43Aが面5と密着状態に接触する接触面43cとなるので、面5と密着性維持材43Aとの間から圧力が抜けるようなことを防止できて、コンクリート版4を効率的に破砕できる。
非圧縮体42は、例えば、放電部30を覆うように設けられた図外の袋内に密閉充填することによって放電部30を取り囲むように設ければよい。
即ち、コンクリート版4の面5に放電部30及び非圧縮体42を設けて、放電の際に発生するエネルギーによって生じた圧力が外部に漏れにくいように、これら放電部30及び非圧縮体42を被せ材で覆ってから放電を行う。
尚、電極装置3の電線37が面5の縁部8;9から外部に導出される部分において、電線37と面5や被せ材との間に隙間が生じている場合には、この隙間をパテなどの充填塞材41で塞ぐ。
最良の形態3によれば、コンクリート版4の面5に多数の孔61を形成する作業を不要とでき、作業を簡単にできる。
また、放電部30を取り囲むように非圧縮体42を設け、面5の上に設置した放電部30及び非圧縮体42を被せ材で覆った状態とし、被せ材が収納部43bを備え、被せ材の面5側の面43aにおける収納部43bの周りが面5と密着状態に接触する接触面43cとなるので、放電の際に発生するエネルギーによって生じた圧力が外部に抜けにくくなり面5に加わる。この面5に加わる圧力が、コンクリート版4のコンクリートを自由面である側面4s側や面5側に移動させる力となってコンクリートに伝わることにより、コンクリートにひび割れが生じてコンクリート版4が破砕する。
Best form 3
In the best mode 1, the discharge part 30 of the electrode device 3 is installed in the groove 7, but the discharge part of the electrode device 3 is formed on the surface 5 of the concrete plate 4 without forming the groove 7 on the surface 5 of the concrete plate 4. 30 and a non-compressed body 42 surrounding the discharge part 30, and the concrete plate 4 is discharged by applying a voltage to the electrodes of the discharge part 30 in a state where the discharge part 30 and the non-compressed body 42 are covered with a covering material. May be crushed.
By using a weight provided with a storage portion formed by a groove similar to the groove 7 for storing the discharge portion 30 and the non-compressed body 42 on the surface facing the surface 5 side as the covering material, Since the periphery of the storage portion on the surface of the surface is a contact surface in contact with the surface 5, it is possible to prevent pressure from being released from between the surface of the weight and the surface 5 of the concrete plate 4. Can be crushed.
For example, as shown in FIG. 6, the weight 43 and the adhesion maintaining material 43 </ b> A such as a rubber sheet or a urethane sheet provided on one surface of the weight 43 directed to the surface 5 side are provided. In order to accommodate the discharge part 30 and the non-compressed body 42 in the surface 43a directed to the surface 5 side of 43A, a covering material 43X provided with a housing portion 43b formed by a groove similar to the groove 7 is used, and this covering material is used. If the covering material 43X is placed on the surface 5 with the adhesion maintaining material 43A side of 43X facing the surface 5, the contact surface where the adhesion maintaining material 43A around the storage portion 43b contacts the surface 5 in close contact. 43c, the adhesion between the adhesion maintaining material 43A and the surface 5 is improved, and it is possible to prevent the pressure from being released from between the surface 5 and the adhesion maintaining material 43A. Can be crushed.
In addition, even if it uses the covering material of the structure provided with the weight 43 and the adhesiveness maintenance material 43A, and the groove | channel which forms the accommodating part 43b in the surface 43a orient | assigned to the surface 5 side of the adhesiveness maintenance material 43A is not formed beforehand. Good. Even when such a covering material is used, the surface 43a on the surface 5 side of the adhesion maintaining material 43A can be increased by increasing the weight of the weight 43 or using a soft material as the adhesion maintaining material 43A. The housing 43b is formed on the surface 43a on the surface 5 side of the adhesion maintaining material 43A by being depressed by being pressed by the pressure of the weight 43 and the pressure of the electric wire 37, and the surface on the surface 5 side of the adhesion maintaining material 43A. Since the adhesion maintaining material 43A around the storage portion 43b in 43a becomes the contact surface 43c in contact with the surface 5 in a close contact state, it is possible to prevent pressure from being released between the surface 5 and the adhesion maintaining material 43A. Thus, the concrete plate 4 can be efficiently crushed.
For example, the non-compressed body 42 may be provided so as to surround the discharge unit 30 by hermetically filling a bag (not shown) provided so as to cover the discharge unit 30.
That is, the discharge part 30 and the non-compressed body 42 are provided on the surface 5 of the concrete plate 4, and the discharge part 30 and the non-compressed body 42 are arranged so that the pressure generated by the energy generated during the discharge is difficult to leak to the outside. Discharge after covering with covering material.
In addition, in the part where the electric wire 37 of the electrode device 3 is led out to the outside from the edge portions 8; 9 of the surface 5, if there is a gap between the electric wire 37 and the surface 5 or the covering material, this gap is reduced. Close with a filling filler 41 such as putty.
According to the best mode 3, the operation of forming a large number of holes 61 in the surface 5 of the concrete plate 4 can be eliminated, and the operation can be simplified.
In addition, an uncompressed body 42 is provided so as to surround the discharge unit 30, the discharge unit 30 and the non-compressed body 42 installed on the surface 5 are covered with a covering material, and the covering material includes a storage portion 43 b, and is covered. Since the periphery of the storage portion 43b in the surface 43a on the surface 5 side of the material is a contact surface 43c that comes into close contact with the surface 5, the pressure generated by the energy generated during discharge is less likely to escape to the outside. Join. The pressure applied to the surface 5 is transmitted to the concrete as a force to move the concrete of the concrete plate 4 to the side surface 4s side or the surface 5 side, which is a free surface. .

尚、最良の形態2で説明したコンクリート構造体4Aを最良の形態3による方法で破砕する場合は、コンクリート構造体4Aの厚さVが厚い場合には、溝7の近傍に自由面を形成する溝79を設ける。コンクリート構造体4Aの面6Aが自由面として機能する場合には、自由溝79を形成しなくても良い。   When the concrete structure 4A described in the best mode 2 is crushed by the method according to the best mode 3, if the thickness V of the concrete structure 4A is thick, a free surface is formed in the vicinity of the groove 7. A groove 79 is provided. When the surface 6A of the concrete structure 4A functions as a free surface, the free groove 79 need not be formed.

コンクリート版4の面5の上に被せ材としての金属板などの剛板を載せて、図外の万力装置のあごで剛板の面とコンクリート版4の面6とを挟み付けて固定してから、放電を行うようにしても良い。面5と剛板との間に密着性維持材43Aを設ければ、放電の際に発生するエネルギーによって生じた圧力の抜けを効果的に防止できて好ましい。コンクリート版4の面5側に向けられる面に予め密着性維持材43Aが取り付けられた剛板を用いても良い。
コンクリート版4の一方の面5を下に向けて図外の平板載台の上に載せて放電を行えば、重り43を不要とできる。
電極装置として、図7に示したような同軸電極装置を用いてもよい。
溝7は、溝長aが、幅eより長く形成された溝であればよく、一方の縁部8から他方の縁部9まで連続して延長しない溝でもよい。例えば、一方の縁部8が開口し他方の縁部9が開口していない溝としたり、一方の縁部8及び他方の縁部9のいずれも開口していない溝とすれば、溝7の両縁部11;11の開口をパテなどの充填塞材41で塞ぐ作業を少なくでき、作業の簡略化が図れる。尚、この場合、電線37を溝7から外部に導くための溝をコンクリート版4の面5や被せ材の面に形成しておけば、面5と被せ材との密着性が増し、放電の際に発生するエネルギーによって生じた圧力の抜けを効果的に防止できて好ましい。
溝7は、面5;5Aから面6;6Aの方向に向けて斜めに延長するよう形成された溝であってもよい。
間隔維持材31としては、ゴムバンド、専用の接続具、ビニルテープのような粘着テープなどを使用できる。
破砕対象物はコンクリート塊や岩石のような塊状のものであっても良い。この場合、塊状の破砕対象物の面としての外面に溝を形成し、溝内に放電部を設置し、放電部の周囲に非圧縮体を設け、溝の開口を被せ材で塞いで放電を行わせることで当該塊状の破砕対象物を破砕できる。
A rigid plate such as a metal plate as a covering material is placed on the surface 5 of the concrete plate 4, and the surface of the rigid plate and the surface 6 of the concrete plate 4 are sandwiched and fixed by a jaw of a vise device (not shown). Then, the discharge may be performed. It is preferable to provide an adhesion maintaining material 43A between the surface 5 and the rigid plate because it is possible to effectively prevent pressure loss caused by energy generated during discharge. You may use the rigid board to which 43A of adhesiveness maintenance materials were previously attached to the surface turned to the surface 5 side of the concrete plate 4. FIG.
The weight 43 can be dispensed with if one surface 5 of the concrete plate 4 faces downward and is placed on a flat plate mount (not shown) for discharging.
A coaxial electrode device as shown in FIG. 7 may be used as the electrode device.
The groove 7 may be a groove that has a groove length a longer than the width e, and may be a groove that does not extend continuously from one edge 8 to the other edge 9. For example, if a groove in which one edge 8 is opened and the other edge 9 is not opened, or a groove in which neither one edge 8 nor the other edge 9 is opened, the groove 7 The work of closing the openings of both edge portions 11; 11 with the filling material 41 such as putty can be reduced, and the work can be simplified. In this case, if a groove for guiding the electric wire 37 from the groove 7 to the outside is formed on the surface 5 of the concrete plate 4 or the surface of the covering material, the adhesion between the surface 5 and the covering material is increased, and the discharge The pressure loss caused by the energy generated at the time can be effectively prevented, which is preferable.
The groove 7 may be a groove formed to extend obliquely from the surface 5; 5A to the surface 6; 6A.
As the distance maintaining member 31, a rubber band, a dedicated connector, an adhesive tape such as a vinyl tape, or the like can be used.
The object to be crushed may be a concrete block or a block like a rock. In this case, a groove is formed on the outer surface as the surface of the crushed object, a discharge part is installed in the groove, an uncompressed body is provided around the discharge part, and the opening of the groove is covered with a covering material for discharging. By carrying out, the said block-shaped crushing target object can be crushed.

放電破砕装置及び破砕対象物を示す図(最良の形態1)。The figure which shows an electric discharge crushing apparatus and the crushing object (best form 1). 放電破砕方法の工程を示す図(最良の形態1)。The figure which shows the process of the electric discharge crushing method (best form 1). コンクリート版の破砕状態を示す図(最良の形態1)。The figure which shows the crushing state of a concrete plate (best form 1). コンクリート版を従来の放電破砕方法で破砕する場合の孔の設け方を示す図。The figure which shows how to provide the hole in the case of crushing a concrete plate with the conventional electric discharge crushing method. 自由面の形成例を示す図(最良の形態2)。The figure which shows the example of formation of a free surface (best form 2). 放電部の設置状態を示す断面図(最良の形態3)。Sectional drawing which shows the installation state of a discharge part (best form 3). 従来の放電破砕装置及び破砕対象物を示す図。The figure which shows the conventional electric discharge crushing apparatus and the crushing target object.

符号の説明Explanation of symbols

1 放電破砕装置、2 電源装置、3 電極装置、
4 コンクリート版(破砕対象物)、5 面、7 溝、30 放電部、
35;36 放電部の電極、41 充填塞材、
42 非圧縮体(圧力伝達媒体)、43 重り(被せ材)、
43A 密着性維持材、43X 被せ材、43b 収納部。
1 discharge crushing device, 2 power supply device, 3 electrode device,
4 Concrete plate (object to be crushed), 5 surfaces, 7 grooves, 30 discharge section,
35; 36 Electrodes of the discharge part, 41 Filling material,
42 non-compressed body (pressure transmission medium), 43 weight (covering material),
43A Adhesiveness maintenance material, 43X covering material, 43b storage part.

Claims (1)

破砕対象物の面に溝壁と溝底と溝壁と溝底との境界である角部とを備えた溝を形成し、溝内に電極装置の放電部を設置するとともに放電部を取り囲む圧力伝達媒体としての水や電解液を充填し、放電部が設置され水や電解液が充填された溝の開口を重りで塞ぐとともに破砕対象物の溝が形成された面と重りとの間に密着性維持材を設けた後、放電部の電極に電圧を印加して放電させることによって破砕対象物を破砕することを特徴とする放電破砕方法 Forming a groove with a groove wall, a groove bottom, and a corner that is a boundary between the groove wall and the groove bottom on the surface of the object to be crushed, and setting the discharge part of the electrode device in the groove and surrounding the discharge part filled with water or the electrolytic solution as a transmission medium, the discharge unit is installed water or electrolyte between the surface and the weight which the grooves are formed in the busy Gutotomoni crushed object by weight an opening of the groove filled A discharge crushing method comprising crushing a crushing object by applying a voltage to an electrode of a discharge part to discharge after providing an adhesion maintaining material therebetween .
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002115483A (en) * 2000-10-06 2002-04-19 Sumitomo Electric Ind Ltd Crushing method
JP2004160740A (en) * 2002-11-11 2004-06-10 Sumitomo Electric Ind Ltd Crushing device and method
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3288233B2 (en) * 1996-11-21 2002-06-04 日立造船株式会社 Destruction device and destruction method
JP3370558B2 (en) * 1997-05-30 2003-01-27 日立造船株式会社 Destruction method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002115483A (en) * 2000-10-06 2002-04-19 Sumitomo Electric Ind Ltd Crushing method
JP2004160740A (en) * 2002-11-11 2004-06-10 Sumitomo Electric Ind Ltd Crushing device and method
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

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