JPH031143Y2 - - Google Patents
Info
- Publication number
- JPH031143Y2 JPH031143Y2 JP1840785U JP1840785U JPH031143Y2 JP H031143 Y2 JPH031143 Y2 JP H031143Y2 JP 1840785 U JP1840785 U JP 1840785U JP 1840785 U JP1840785 U JP 1840785U JP H031143 Y2 JPH031143 Y2 JP H031143Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- piston
- cylinder
- explosion
- piston rod
- 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
Links
- 238000004880 explosion Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002360 explosive Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003721 gunpowder Substances 0.000 description 3
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Control Of Cutting Processes (AREA)
- Shearing Machines (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は深海において電線、ボルト頚部等を切
断する爆破カツターに関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an explosive cutter for cutting electric wires, bolt necks, etc. in the deep sea.
従来の技術
第６図に従来型の爆破カツターを示す。同図に
おいて、シリンダー１′の中にカツター２′が備え
つけられており、点火プラグ３′が点火すること
により爆発室４′の中で爆発がおこる。この時発
生する力Ｆを利用してカツター２′を押し出し、
電線を切断するものである。Prior Art Figure 6 shows a conventional blast cutter. In the figure, a cutter 2' is installed in a cylinder 1', and when a spark plug 3' is ignited, an explosion occurs in an explosion chamber 4'. Using the force F generated at this time, push out the cutter 2',
It is used to cut electric wires.
考案が解決しようとする問題点
しかし、従来のものは、カツター２′に水圧に
よる外力f0が働き、深度が深い所では外力f0が非
常に大きくなり、所望の切断力が得られない。Problems to be Solved by the Invention However, in the conventional cutter 2', an external force f 0 due to water pressure acts on the cutter 2', and the external force f 0 becomes extremely large at deep depths, making it impossible to obtain the desired cutting force.
また深度によつて切断力が大きく異なるという
欠点がある。 Another disadvantage is that the cutting force varies greatly depending on the depth.
更に、従来型のものは、使用に際しカツター
２′がシリンダー１′から離脱してしまうため、再
使用が困難である。 Furthermore, in the conventional type, the cutter 2' separates from the cylinder 1' during use, making it difficult to reuse it.
問題点を解決するための手段
カツターに水圧が働かない様にする為、前部に
カツターを具えたピストンの後部にピストンロツ
ドを設け、該ピストンロツドをシリンダー外に突
出させ、カツター前面とピストンロツド後面に働
く水圧をバランスさせる。Measures to solve the problem: In order to prevent water pressure from acting on the cutter, a piston rod is provided at the rear of the piston with the cutter on the front, and the piston rod is made to protrude outside the cylinder so that it acts on the front surface of the cutter and the rear surface of the piston rod. Balance water pressure.
作 用
カツターに働く水圧が打ち消され、容易且つ確
実にカツターが動作できる。Function The water pressure acting on the cutter is canceled out, allowing the cutter to operate easily and reliably.
また、カツターがシリンダーより離脱しないの
で再使用が可能となる。 In addition, the cutter does not separate from the cylinder, so it can be reused.
実施例
第１図、第２図において、カツター１の後方に
ピストン２が取り付けられており、ピストン２の
後部には水圧を打ち消す為ピストンロツド２ａが
シリンダー３の外に出ている。ピストン２には通
気孔４が設けてあり爆発室５に火薬をそう入した
後、ピストン２をセツトする際には、爆発室５の
中の空気はこの通気孔４を通つて外部へ逃げる。
ピストン２セツト終了後は、通気孔４をプラグ６
で塞ぎ、シリンダー３の開口部にふた１０を装着
する。９はＯリングであり、シール膜１１，１２
によりシリンダー３内の水密を二重にガードす
る。Embodiment In FIGS. 1 and 2, a piston 2 is attached to the rear of a cutter 1, and a piston rod 2a protrudes from a cylinder 3 at the rear of the piston 2 to counteract water pressure. The piston 2 is provided with a vent hole 4, and when the piston 2 is set after charging explosives into the explosion chamber 5, the air in the explosion chamber 5 escapes to the outside through the vent hole 4.
After setting the piston 2, connect the vent hole 4 to the plug 6.
and attach the lid 10 to the opening of the cylinder 3. 9 is an O-ring, sealing films 11, 12
This doubles the watertightness inside the cylinder 3.
まず、爆発室５内に火薬を入れピストン２をセ
ツトする。この時爆発室５内の空気は、通気孔４
を通つてて外部へ逃げる。従つて、爆発室５内の
圧力と圧縮室８内の圧力は等しくなり、ピストン
２にはどちらの方向にも圧力は働かない。 First, gunpowder is put into the explosion chamber 5 and the piston 2 is set. At this time, the air in the explosion chamber 5 is
Escape to the outside through. Therefore, the pressure in the explosion chamber 5 and the pressure in the compression chamber 8 are equal, and no pressure acts on the piston 2 in either direction.
次に水中では、カツター１にかかる水力とピス
トンロツド２ａにかかる水圧が釣り合つている。
このためカツター１にかかる水圧は打ち消され
る。 Next, underwater, the hydraulic force applied to the cutter 1 and the hydraulic pressure applied to the piston rod 2a are balanced.
Therefore, the water pressure applied to the cutter 1 is canceled out.
第３図は爆発前の状態を示すもので、同図にお
いて点火プラグ７が点火することにより爆発室５
内で爆発が起こりその時発生する力Ｆでピストン
２とカツター１が押し出され、電線１３が切断さ
れる。なお、電線１３のカツター１の反対側に適
当な固定部材１４を設ける。第４図に爆発直後の
状態を示す。 Figure 3 shows the state before the explosion, and in this figure, the explosion chamber 5 is ignited by the spark plug 7.
An explosion occurs inside, and the force F generated at that time pushes out the piston 2 and the cutter 1, cutting the electric wire 13. Note that a suitable fixing member 14 is provided on the opposite side of the electric wire 13 from the cutter 1. Figure 4 shows the situation immediately after the explosion.
この時、圧縮室８内の空気も圧縮されるが、例
えばストロークＳのうちの4/5Ｓだけピストンが
押されたとしても、圧縮室８内の圧力は始めの状
態の５倍にしかならない。通常これは、１×５＝
５の５気圧であり、これは水中深度、約50mにし
かならない。この値は、1000m以上の深海に比べ
遥かに小さい。従つて、4/5Ｓのストロークで電
線が切断される様にセツトすれば何ら問題はな
い。爆発後、シリンダー３にはふた１０があるた
め、カツター１は離脱しない。 At this time, the air in the compression chamber 8 is also compressed, but even if the piston is pushed by, for example, 4/5 S of the stroke S, the pressure in the compression chamber 8 will only be five times the initial state. Usually this is 1×5=
5 atm, which is only at a depth of about 50 meters underwater. This value is much smaller than in the deep sea of 1000m or more. Therefore, there will be no problem if the wire is set so that it is cut with a stroke of 4/5S. After the explosion, the cutter 1 does not come off because the cylinder 3 has a lid 10.
第５図は、アンビル１５をふた１０′に結合し
た他の実施例で、切断すべき電線を電線挿入口１
６に挿入した後カツターを作動させる。 FIG. 5 shows another embodiment in which the anvil 15 is connected to the lid 10', and the wire to be cut is inserted into the wire insertion port 1.
6, then operate the cutter.
考案の効果
ピストンに通気孔がある為、火薬もそう入した
時点では、ピストンにかかる圧力は打ち消され
る。次に水中においてもカツターとピストンロツ
ドの両方をシリンダーの外に出したことによりカ
ツターに働く水圧は打ち消される。Effects of the invention Since the piston has a vent, the pressure on the piston is canceled out when gunpowder is introduced. Next, even when underwater, the water pressure acting on the cutter is canceled out by having both the cutter and piston rod out of the cylinder.
これよりカツターを押し出す力が小さくて済
み、爆発も小さくて良いので、火薬の量も少なく
てすむ。 The force required to push out the cutter is smaller than this, and the explosion is also smaller, so less gunpowder is needed.
また爆発力が小さくなることによりシリンダー
外板の強度も低くてよいので軽量化がはかれる。
爆発後は、シリンダーにふたがあるのでカツター
が離脱せず再使用が可能である。 Furthermore, since the explosive force is reduced, the strength of the cylinder outer plate can be lowered, resulting in weight reduction.
After the explosion, the cylinder has a lid, so the cutter does not come off and can be reused.
第１図は本考案爆破カツターの実施例の平面断
面図、第２図は第１図の側面断面図、第３図は爆
発前の状態を示す断面図、第４図は爆発後の状態
を示す断面図、第５図は本考案の他の実施例の断
面図、第６図は従来装置の断面図である。
１……カツター、２……ピストン、２ａ……ピ
ストンロツド、３……シリンダー、４……通気
孔、５……爆発室、６……プラグ、１０……ふ
た、１３……電線。
Fig. 1 is a plan sectional view of an embodiment of the detonating cutter of the present invention, Fig. 2 is a side sectional view of Fig. 1, Fig. 3 is a sectional view showing the state before explosion, and Fig. 4 shows the state after explosion. 5 is a sectional view of another embodiment of the present invention, and FIG. 6 is a sectional view of a conventional device. 1... cutter, 2... piston, 2a... piston rod, 3... cylinder, 4... vent, 5... explosion chamber, 6... plug, 10... lid, 13... electric wire.
Claims (1)
ストンを嵌装し、前記ピストンの前面には前記ふ
たを貫通するカツターを突設し、前記ピストンの
後面には前記シリンダの後部壁を貫通するピスト
ンロツドを突設し、前記ピストンには通気孔と該
通気孔を閉鎖するプラグとを設け、前記シリンダ
の後部に点火プラグを設けて爆発室となし、前記
カツター前面と前記ピストンロツド後面に働く水
圧がバランスした状態で、前記点火プラグにより
爆発室内の爆薬を爆発させ、前記カツターにより
電線等を切断するようにしたことを特徴とする爆
破カツター。 A piston is fitted in a cylinder having a removable lid at the front, a cutter is provided on the front surface of the piston to protrude through the lid, and a cutter is provided on the rear surface of the piston to penetrate the rear wall of the cylinder. A piston rod is provided protrudingly, the piston is provided with a vent hole and a plug for closing the vent hole, a spark plug is provided at the rear of the cylinder to form an explosion chamber, and water pressure acting on the front surface of the cutter and the rear surface of the piston rod is provided. An explosive cutter characterized in that, in a balanced state, the spark plug detonates explosives in the explosion chamber, and the cutter cuts electric wires and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1840785U JPH031143Y2 (en) | 1985-02-14 | 1985-02-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1840785U JPH031143Y2 (en) | 1985-02-14 | 1985-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61137416U JPS61137416U (en) | 1986-08-26 |
| JPH031143Y2 true JPH031143Y2 (en) | 1991-01-16 |
Family
ID=30507018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1840785U Expired JPH031143Y2 (en) | 1985-02-14 | 1985-02-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031143Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4949043B2 (en) * | 2007-01-10 | 2012-06-06 | 株式会社キッツ | Branch pipe fitting |
-
1985
- 1985-02-14 JP JP1840785U patent/JPH031143Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61137416U (en) | 1986-08-26 |
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