JP2017190909A - Ammunition container - Google Patents

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JP2017190909A
JP2017190909A JP2016080755A JP2016080755A JP2017190909A JP 2017190909 A JP2017190909 A JP 2017190909A JP 2016080755 A JP2016080755 A JP 2016080755A JP 2016080755 A JP2016080755 A JP 2016080755A JP 2017190909 A JP2017190909 A JP 2017190909A
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container
container body
ammunition
length
opening
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JP6707965B2 (en
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中村 雄一
Yuichi Nakamura
雄一 中村
純也 松川
Junya Matsukawa
純也 松川
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NOF Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an ammunition container capable of securing safety when explosives are ignited inside the container while more reliably ensuring falling strength and airtightness at a normal time.SOLUTION: An ammunition container has a container body 10 of a bottomed cylindrical shape, and a lid body 11 for closing the opening of the container body 10. In a cylindrical part 10a of the container body 10 having continuous welded portions 30, a perforated slit 20 is formed, in which a plurality of opening holes 20 are lined up in the same straight line extending in the axial direction. When representing the outer diameter of the container body as D0 and the thickness of the container body as D1, a relationship of 0.015≤D1/D0≤0.031 is satisfied, and when representing the length of the container body 10 as L0, the length of the slits 20 as L1, and the length of a non-opening portion 20b between the opening holes 20a as A1, relationships of 0.60≤L1/L0≤0.95 and 0.04≤the sum of A1/L1≤0.30 are satisfied at the same time.SELECTED DRAWING: Figure 1

Description

本発明は、例えばりゅう弾砲用発射装薬や火砲用弾薬の梱包容器などとして利用される円筒状の弾薬用容器に関する。   The present invention relates to a cylindrical ammunition container that is used, for example, as a packing container for a shooting gun for a cannon or a gun.

りゅう弾砲用発射装薬等に使用される弾薬用容器とは、細かい粒状の発射薬を装填した複数個の発射装薬を梱包して、運搬したり弾薬庫に保管する際に一時的に使用する金属容器のことである。発射装薬をりゅう弾砲等の薬室に挿入する際には、弾薬用容器は取り除かれる。一般に、りゅう弾砲用発射装薬や火砲用弾薬等に使用される梱包容器としての弾薬用容器は、運用面を配慮して一定以上の落下強度と気密性を有する構造となっている。   An ammunition container used for an ammunition cannon is used to pack a plurality of projectiles loaded with fine granular projectiles for temporary transportation when transported or stored in an ammunition depot. It is a metal container to be used. The ammunition container is removed when the propellant is inserted into a chamber such as an howitzer. In general, an ammunition container as a packing container used for a shooting gun for a cannon or an ammunition for a gun has a structure having a drop strength and airtightness of a certain level or more in consideration of operational aspects.

近年、りゅう弾砲用発射薬や火砲用弾薬は、平和貢献活動に基づく海外への派遣活動を理由に保管及び運用時における良好な取り扱い性が求められるようになってきている。火砲用弾薬や発射薬の取り扱い評価方法として、米国のITOP(International Test Operations Procedure)で試験方法が規格化されている。この規格の中で運用面での取り扱い性を評価する試験項目としては、落下試験や振動試験が規定されている。このような規定を満たすために、りゅう弾砲用発射装薬や火砲用弾薬用の弾薬用容器には強固な落下強度と高い気密性が要求されている。   In recent years, gunpowder ammunition and artillery ammunition have been required to have good handling at the time of storage and operation because of overseas dispatch activities based on peace-contributing activities. As a method for evaluating the handling of artillery ammunition and ammunition, test methods are standardized by the International Test Operations Procedure (ITOP) in the United States. In this standard, a drop test and a vibration test are defined as test items for evaluating the handling property in operation. In order to satisfy such regulations, a solid drop strength and high airtightness are required for ammunition containers for ammunition and gun ammunition.

ところが、従来の弾薬用容器では、容器内部に収容された弾薬や発射装薬を構成する火薬類が発火した場合、高い気密性を有する弾薬用容器内において火薬類の燃焼反応が生じるので、弾薬用容器自体が弾薬のように爆発してしまい、周囲の人員や機材などに多大な被害や損失を与える事態が発生する。   However, in conventional ammunition containers, if the explosives composing the ammunition or the propellant charged inside the container ignite, the combustion reaction of the explosives occurs in the highly airtight ammunition container. The container itself will explode like ammunition, causing serious damage and loss to surrounding personnel and equipment.

また、弾薬用容器に開口孔を設け、銃弾や燃焼時に弾薬容器内の弾薬が発火しても開口部が大きく開口し、内部圧力を逃がすことで、爆発するのを防ぐ弾薬用容器も提案されている。しかし、弾頭の破片のような高速破片が衝突した場合には、火薬類の燃焼が促進されて開口部が大きく開くよりも先に内圧が高くなり、弾薬容器自体が爆発してしまう。   In addition, an ammunition container has been proposed in which an opening hole is provided in the ammunition container so that the opening will open greatly even if the ammunition in the ammunition container ignites during bullet or combustion, and the internal pressure is released to prevent explosion. ing. However, when high-speed fragments such as warhead fragments collide, the internal pressure becomes higher and the ammunition container itself explodes before the explosives are promoted and the opening is greatly opened.

そこで、一定の落下強度を保持しながらも弾薬の燃焼反応を緩和することで、周囲の被害を抑制できる弾薬用容器として、特許文献1がある。具体的には、有底円筒状の容器本体と、前記容器本体の円筒部には螺旋状の接合部を有し、前記容器本体の開口を塞ぐ蓋体とを有する弾薬用容器であって、容器本体の円筒部に、軸方向に延びる1本線からなるスリットが形成されている。当該スリットは複数箇所に設けてもよいとされており、円筒部の長さLに対するスリットの長さxの和(Σx)の比率(Σx/L)が0.25〜3.0であり、円筒部の外径Dに対するスリットの幅yの比率(y/D)が0.001〜0.05となるように設計されている。   Thus, there is Patent Document 1 as an ammunition container that can suppress surrounding damage by relaxing the combustion reaction of ammunition while maintaining a certain drop strength. Specifically, a container body for ammunition having a bottomed cylindrical container body, and a cylindrical joint portion of the container body having a spiral joint, and a lid for closing the opening of the container body, A slit made of a single line extending in the axial direction is formed in the cylindrical portion of the container body. The slits may be provided at a plurality of locations, and the ratio (Σx / L) of the sum (Σx) of the slit length x to the length L of the cylindrical portion is 0.25 to 3.0, The ratio (y / D) of the slit width y to the outer diameter D of the cylindrical portion is designed to be 0.001 to 0.05.

また、特許文献2には、有底円筒状の容器本体と、容器本体の開口を塞ぐ蓋体とを有する弾薬用容器であって、前記容器本体の円筒部に、所定形状及び所定長さの長孔が所定隙間をもって内外貫通状に穿設され、前記長孔は所定長さの接合部と交互に並び少なくとも1つのスティッチ状脆弱部として軸方向に延びており、そして、軸方向に延びるスティッチ状脆弱部内の全長孔の隙間に、封止手段を設けることで、容器が封止されている弾薬用容器が開示されている。   Patent Document 2 discloses an ammunition container having a bottomed cylindrical container main body and a lid that closes the opening of the container main body, and the cylindrical portion of the container main body has a predetermined shape and a predetermined length. A long hole is bored in an inner and outer through shape with a predetermined gap, the long hole is alternately arranged with a joint portion of a predetermined length and extends in the axial direction as at least one stitch-like weakened portion, and the stitch extends in the axial direction. An ammunition container in which a container is sealed by providing a sealing means in a gap between full length holes in a fragile portion is disclosed.

特開2012−117741号公報JP 2012-117741 A 特開2015−227764号公報Japanese Patent Laying-Open No. 2015-227764

しかしながら、特許文献1及び特許文献2では容器本体の円筒部が螺旋状の接合部を有する鋼管、すなわちスパイラル鋼管であるため、スパイラル鋼管の厚みは鋼帯を引き出しながら螺旋状に整形する製法の関係故に厚みの上限が低く、連続した直線状の溶接部を有する電縫鋼管、板巻き鋼管、または継ぎ目無し鋼管と比べて薄い。具体的には、鋼管の外径をD0、鋼管の厚みをD1とした場合、スパイラル鋼管ではD1/D0が最大で0.014に対し、電縫鋼管ではD1/D0が最大で0.075である。容器本体としてスパイラル鋼管を用いた弾薬用容器では、弾頭の破片のような高速破片が衝突して弾薬用容器内の弾薬や発射装薬が発火した場合に生じる急激な内部圧力に対して機械的強度が不十分である場合があり、スパイラル鋼管が細かく破片化して高速度で飛散することによって周囲の人員や機材などに多大な被害や損失を与える恐れがある。   However, in Patent Document 1 and Patent Document 2, since the cylindrical portion of the container body is a steel pipe having a spiral joint, that is, a spiral steel pipe, the thickness of the spiral steel pipe is related to the manufacturing method in which the steel strip is drawn into a spiral shape. Therefore, the upper limit of the thickness is low, and it is thinner than an ERW steel pipe, a sheet-wound steel pipe, or a seamless steel pipe having a continuous linear weld. Specifically, when the outer diameter of the steel pipe is D0 and the thickness of the steel pipe is D1, the spiral steel pipe has a maximum D1 / D0 of 0.014, whereas the ERW steel pipe has a maximum D1 / D0 of 0.075. is there. In a container for ammunition using a spiral steel pipe as the container body, it is mechanical against the sudden internal pressure generated when high-speed fragments such as warhead fragments collide and the ammunition or projectile in the ammunition container ignites. In some cases, the strength is insufficient, and the spiral steel pipe breaks into fine pieces and scatters at a high speed, which may cause great damage and loss to surrounding personnel and equipment.

そこで、本発明は上記課題を解決するものであって、通常時における落下強度をより確実に担保しながら、容器内部において火薬類が発火した際の安全性も担保できる弾薬用容器を提供することを目的とする。   Therefore, the present invention solves the above-mentioned problem, and provides an ammunition container that can ensure the safety when an explosive is ignited inside the container while ensuring the drop strength in a normal state more reliably. With the goal.

上記の目的を達成するために、第1の発明の弾薬用容器は、有底筒状の容器本体と、該容器本体の開口を塞ぐ蓋体とを有し、前記容器本体の円筒部に、複数個の開口孔が軸方向に延びる貫通した同一直線上に並んだミシン目状のスリットを有する弾薬用容器であって、前記容器本体の円筒部は軸方向に連続した溶接部を有する鋼管であり、前記容器本体の外径をD0、前記容器本体の厚みをD1としたとき、0.015≦D1/D0≦0.031の関係を満たし、前記容器本体の長さをL0、前記スリットの長さをL1、各開口孔間の非開口部の長さをA1としたとき、0.60≦L1/L0≦0.95、0.04≦A1の和/L1≦0.30の関係を満たすことを特徴とする。   In order to achieve the above object, the ammunition container of the first invention has a bottomed cylindrical container main body and a lid for closing the opening of the container main body. An ammunition container having perforated slits arranged on the same straight line through which a plurality of opening holes extend in the axial direction, wherein the cylindrical portion of the container body is a steel pipe having a welding portion continuous in the axial direction. Yes, when the outer diameter of the container body is D0 and the thickness of the container body is D1, the relationship of 0.015 ≦ D1 / D0 ≦ 0.031 is satisfied, the length of the container body is L0, When the length is L1 and the length of the non-opening portion between the opening holes is A1, the relationship of 0.60 ≦ L1 / L0 ≦ 0.95, 0.04 ≦ A1 / L1 ≦ 0.30 is established. It is characterized by satisfying.

第2の発明の弾薬用容器は、有底筒状の容器本体と、該容器本体の開口を塞ぐ蓋体とを有し、前記容器本体の円筒部に、複数個の開口孔が軸方向に延びる貫通した同一直線上に並んだミシン目状のスリットを有する弾薬用容器であって、前記容器本体の円筒部は継ぎ目無し鋼管であり、前記容器本体の外径をD0、前記容器本体の厚みをD1としたとき、0.015≦D1/D0≦0.031の関係を満たし、前記容器本体の長さをL0、前記スリットの長さをL1、各開口孔間の非開口部の長さをA1としたとき、0.60≦L1/L0≦0.95、0.04≦A1の和/L1≦0.30の関係を満たすことを特徴とする。   The ammunition container of the second invention has a bottomed cylindrical container main body and a lid for closing the opening of the container main body, and a plurality of opening holes are formed in the cylindrical portion of the container main body in the axial direction. An ammunition container having perforated slits arranged on the same straight line extending through, wherein the cylindrical portion of the container body is a seamless steel pipe, the outer diameter of the container body is D0, and the thickness of the container body Where D1 satisfies the relationship of 0.015 ≦ D1 / D0 ≦ 0.031, the length of the container body is L0, the length of the slit is L1, and the length of the non-opening portion between the opening holes Where A1 is 0.60 ≦ L1 / L0 ≦ 0.95, 0.04 ≦ sum of A1 / L1 ≦ 0.30.

本発明の弾薬用容器によれば、容器本体の外径(D0)に対する容器本体の厚み(D1)の比を0.015≦D1/D0≦0.031に設定していることで、火薬類が発火した非常時に容器本体が破片化することを避けられ、発火時安全性を担保することができる。更に容器本体の長さ(L0)に対するスリットの長さ(L1)の比と、スリットの長さ(L1)に対する非開口部のトータル長さ(ΣA1)の比を所定の範囲に設計していることで、通常時における落下強度および気密性をより確実に担保しながら、容器内部において火薬類が発火した非常時には弾薬用容器の爆発を避けられ、発火時安全性も担保することができる。   According to the ammunition container of the present invention, the ratio of the thickness (D1) of the container body to the outer diameter (D0) of the container body is set to 0.015 ≦ D1 / D0 ≦ 0.031. It is possible to avoid fragmentation of the container body in the event of an emergency, and to ensure safety during ignition. Further, the ratio of the length (L1) of the slit to the length (L0) of the container body and the ratio of the total length (ΣA1) of the non-opening portion to the length (L1) of the slit are designed within a predetermined range. Thus, the explosion strength of the ammunition container can be avoided in the event of an emergency when the explosives ignite inside the container, and the safety at the time of ignition can be ensured while ensuring the drop strength and airtightness in the normal state more reliably.

実施形態1の弾薬用容器の一部破断側面図である。FIG. 3 is a partially cutaway side view of the ammunition container of the first embodiment. 実施形態2の弾薬用容器の一部破断側面図である。It is a partially broken side view of the ammunition container of the second embodiment.

以下に、本発明の代表的な実施形態について説明する。図1に示すように、本実施形態1の弾薬用容器1は、有底筒状の容器本体10と、該容器本体10の開口を塞ぐ蓋体11とを有し、内部に複数個の弾薬または発射装薬(図示せず)が直列に並べて装填されるようになっている。弾薬(発射薬)としては、シングルベース発射薬、ダブルベース発射薬、トリプルベース発射薬、マルチベース発射薬等が用いられる。   Hereinafter, representative embodiments of the present invention will be described. As shown in FIG. 1, the ammunition container 1 of the first embodiment has a bottomed cylindrical container body 10 and a lid body 11 that closes the opening of the container body 10, and a plurality of ammunition inside. Alternatively, a projectile charge (not shown) is loaded side by side in series. As the ammunition (propellant), a single base propellant, a double base propellant, a triple base propellant, a multi-base propellant and the like are used.

第1の発明の容器本体10は鉄鋼製であり、鉄鋼板の短辺を丸めて、長辺同士を突き合わせ、突き合わせた長辺において溶接される電縫鋼管または板巻鋼管であって、軸方向に連続した溶接部30を有する。   The container body 10 of the first invention is made of steel, and is an electric-welded steel pipe or a sheet-wound steel pipe that is rounded on the short sides of the steel plate, butts the long sides, and is welded at the long sides. A continuous weld 30.

第2の発明の容器本体10は鉄鋼製であり、加熱された丸鋼片を穿孔機で中空管とした後、プラグミルで圧延した継ぎ目無し鋼管であって、溶接部を有さない。   The container main body 10 of the second invention is made of steel, and is a seamless steel pipe which is rolled with a plug mill after a heated round steel piece is made into a hollow pipe with a piercing machine, and does not have a weld.

容器本体10の外径D0に対して容器本体10の厚みD1の比を0.015≦D1/D0≦0.031に設定することが好ましい。D1/D0が0.015より小さいと火薬類が発火した非常時に容器本体が破片化する場合があり、D1/D0が0.031より大きいと容器本体10自体の重量が増加して運搬時や取り扱い時に支障をきたす。155mm級のりゅう弾砲用発射装薬に用いる弾薬用容器の場合、容器本体10の厚みD0は一般に2.6〜3.7mmである。   The ratio of the thickness D1 of the container body 10 to the outer diameter D0 of the container body 10 is preferably set to 0.015 ≦ D1 / D0 ≦ 0.031. If D1 / D0 is less than 0.015, the container body may be broken in an emergency when explosives ignite. If D1 / D0 is greater than 0.031, the weight of the container body 10 itself increases, It will cause trouble when handling. In the case of an ammunition container used for a 155 mm-class gun shell projectile, the thickness D0 of the container body 10 is generally 2.6 to 3.7 mm.

蓋体11は、弾薬用容器1内を密閉できるものであれば、その材料は特に制限されない。例えば容器本体10と同様の鉄鋼製とするほか、鉄鋼以外の金属製、プラスチック製、繊維強化プラスチック製、樹脂含浸紙製、又はゴム製とすることも可能である。蓋体11の形状は、平板状、ドーム状、カップ状であり特に制限されない。蓋体11は、容器本体10の開口へ圧入又は螺合により嵌合される。   If the lid | cover 11 can seal the inside of the container 1 for ammunition, the material in particular will not be restrict | limited. For example, in addition to the steel body similar to that of the container body 10, it is also possible to use a metal other than steel, a plastic, a fiber reinforced plastic, a resin-impregnated paper, or a rubber. The shape of the lid 11 is not particularly limited, and is a flat plate shape, a dome shape, or a cup shape. The lid 11 is fitted into the opening of the container body 10 by press fitting or screwing.

そのうえで、容器本体10の円筒部10aには、軸方向に延びるスリット20が形成されている。当該スリット20は、複数個の開口孔20aが同一直線上に並んだミシン目状(破線状)を呈し、各開口孔20aは円筒部10aを内外貫通して穿設されている。これにより、弾薬用容器1内において弾薬が発火した際に、各開口孔20aを介して燃焼ガスを積極的に弾薬用容器1外へ放出することで内圧上昇を抑制でき、弾薬用容器1の爆発を回避することができる。一方、スリット20はミシン目状に形成されているため、各開口孔20aの間には非開口部20bが存在する。これにより、非開口部を有しない、すなわちスリット全体が連続した開口孔からなるスリットを形成した場合よりも落下強度が高くなる。   In addition, a slit 20 extending in the axial direction is formed in the cylindrical portion 10 a of the container body 10. The slit 20 has a perforated shape (broken line shape) in which a plurality of opening holes 20a are arranged on the same straight line, and each opening hole 20a penetrates the cylindrical portion 10a. As a result, when the ammunition is ignited in the ammunition container 1, the increase in internal pressure can be suppressed by positively releasing the combustion gas to the outside of the ammunition container 1 through the respective opening holes 20 a, and the ammunition container 1 Explosion can be avoided. On the other hand, since the slit 20 is formed in a perforated shape, a non-opening portion 20b exists between the opening holes 20a. Thereby, drop strength becomes higher than the case where it does not have a non-opening part, ie, the slit which consists of a continuous opening hole is formed.

各開口孔20aの形状は、軸方向に長い長方形や楕円形のほか、円形や正方形とすることもできる。中でも、軸方向に長い略直線形状となるような長方形や楕円形が好ましい。   The shape of each opening 20a can be a rectangle or an ellipse that is long in the axial direction, or a circle or a square. Among them, a rectangle or an ellipse that is a substantially linear shape that is long in the axial direction is preferable.

ここで、容器本体10の長さをL0、スリット20の長さをL1、各開口孔20aの長さをA0、各開口孔20aの間に存在する非開口部20bの長さ(隣り合う開口孔20a同士の距離)をA1としたとき、容器本体10の長さL0に対するスリット20の長さL1の比(L1/L0)は、0.60≦L1/L0≦0.95、好ましくは0.70≦L1/L0≦0.95とする。(L1/L0)が0.60未満では、容器本体10の長さL0に対してスリット20の長さL1が短すぎることで、弾薬用容器1内において火薬類が発火した際に、燃焼ガスが弾薬用容器1の全体から効率よく放出されず、弾薬用容器1が爆発する危険性が高まり発火時安全性が不足する。一方、(L1/L0)の上限が0.95より大きい場合は蓋体11の嵌合部に干渉し、火薬類が発火した際に嵌合部が変形し蓋体11が飛散して発火時安全性が不足する。   Here, the length of the container body 10 is L0, the length of the slit 20 is L1, the length of each opening hole 20a is A0, and the length of the non-opening portion 20b existing between the opening holes 20a (adjacent openings When the distance between the holes 20a is A1, the ratio of the length L1 of the slit 20 to the length L0 of the container body 10 (L1 / L0) is 0.60 ≦ L1 / L0 ≦ 0.95, preferably 0 70 ≦ L1 / L0 ≦ 0.95. When (L1 / L0) is less than 0.60, the length L1 of the slit 20 is too short with respect to the length L0 of the container body 10, so that when the explosives are ignited in the ammunition container 1, the combustion gas However, it is not efficiently released from the entire ammunition container 1, and the danger of the ammunition container 1 exploding increases and the safety at the time of ignition is insufficient. On the other hand, when the upper limit of (L1 / L0) is larger than 0.95, it interferes with the fitting portion of the lid body 11, and when the explosives are ignited, the fitting portion is deformed, and the lid body 11 is scattered to cause ignition. Insufficient safety.

同時に、スリット20の長さL1に対する非開口部20bの長さA1の和(ΣA1)が、0.04≦ΣA1/L1≦0.30、好ましくは0.12≦ΣA1/L1≦0.20の関係も満たすように設計する。これにより、スリット20を設けることで発火時安全性を担保しながら、スリット20を形成することによる強度低下を必要最低限に抑えられるので、落下強度も確実に担保することができる。(ΣA1/L1)が0.04未満では弾薬用容器1の落下強度が不足し、0.30を超えるとスリット20が開口するために必要な圧力が高すぎて発火時安全性が不足する。スリット20の長さL1は弾薬用容器に収納する弾薬の大きさにより設定されるため、非開口部20bの長さA1としては、好ましくは1mm以上13mm以下、さらに好ましくは1mm以上5mm以下に設定することで、落下強度試験及び発火時安全性試験を同時に満たすことができる。   At the same time, the sum (ΣA1) of the length A1 of the non-opening portion 20b with respect to the length L1 of the slit 20 satisfies 0.04 ≦ ΣA1 / L1 ≦ 0.30, preferably 0.12 ≦ ΣA1 / L1 ≦ 0.20. Design to meet relationships. Thereby, since the strength reduction by forming the slit 20 can be suppressed to the minimum necessary while ensuring the safety at the time of ignition by providing the slit 20, the drop strength can also be reliably ensured. If (ΣA1 / L1) is less than 0.04, the drop strength of the ammunition container 1 is insufficient, and if it exceeds 0.30, the pressure required for opening the slit 20 is too high, and the safety at the time of ignition is insufficient. Since the length L1 of the slit 20 is set according to the size of the ammunition stored in the ammunition container, the length A1 of the non-opening portion 20b is preferably set to 1 mm to 13 mm, more preferably 1 mm to 5 mm. By doing so, the drop strength test and the fire safety test can be satisfied simultaneously.

上記2つの条件を同時に満たす限り、開口孔20aの穿設個数は特に制限されない。好ましくは3〜50個、より好ましくは10〜40個、さらに好ましくは20〜30個の範囲で自由に設計できる。また、上記2つの条件を同時に満たす範囲において、各開口孔20aの長さは10〜200mm好ましくは20〜160mmの範囲で自由に設計することができる。各開口孔20aや各非開口部20bの長さは必ずしも統一されていなくてもよいが、全ての開口孔20a及び非開口部20bの長さは同じであることが好ましい。また、各開口孔20bの幅(弾薬用容器における周方向寸法)も0.05〜7.0mm、好ましくは0.1〜5.0mmの範囲で自由に設計すればよい。   As long as the above two conditions are satisfied at the same time, the number of openings 20a is not particularly limited. Preferably, it can be freely designed in the range of 3-50, more preferably 10-40, and still more preferably 20-30. In addition, the length of each opening 20a can be freely designed within a range of 10 to 200 mm, preferably 20 to 160 mm, within a range that satisfies the above two conditions simultaneously. Although the length of each opening hole 20a and each non-opening part 20b does not necessarily need to be unified, it is preferable that all the opening holes 20a and the non-opening part 20b have the same length. Further, the width of each opening 20b (circumferential dimension in the ammunition container) may be freely designed in the range of 0.05 to 7.0 mm, preferably 0.1 to 5.0 mm.

次に、図2に示す本実施形態2の弾薬用容器2について説明する。容器本体10は鉄鋼製であり、予め円筒状に形成された継目無し鋼管である。   Next, the ammunition container 2 of the second embodiment shown in FIG. 2 will be described. The container body 10 is made of steel and is a seamless steel pipe formed in a cylindrical shape in advance.

容器本体10の外径D0に対して容器本体10の厚みD1の比を0.015≦D1/D0≦0.031に設定することが好ましい。D1/D0が0.015より小さいと火薬類が発火した非常時に容器本体が破片化する場合があり、D1/D0が0.031より大きいと容器本体10自体の重量が増加して運搬時や取り扱い時に支障をきたす。155mm級のりゅう弾砲用発射装薬に用いる弾薬用容器の場合、容器本体10の厚みD0は一般に2.6〜3.7mmである。   The ratio of the thickness D1 of the container body 10 to the outer diameter D0 of the container body 10 is preferably set to 0.015 ≦ D1 / D0 ≦ 0.031. If D1 / D0 is less than 0.015, the container body may be broken in an emergency when explosives ignite. If D1 / D0 is greater than 0.031, the weight of the container body 10 itself increases, It will cause trouble when handling. In the case of an ammunition container used for a 155 mm-class gun shell projectile, the thickness D0 of the container body 10 is generally 2.6 to 3.7 mm.

本実施形態2である弾薬用容器2の蓋体11及びスリット20の形態は、実施形態1である弾薬用容器1と同一である。   The form of the lid 11 and the slit 20 of the ammunition container 2 according to the second embodiment is the same as that of the ammunition container 1 according to the first embodiment.

なお、図示していないが、円筒部10aの外周面又は内周面には、弾薬用容器1の気密性を担保するため、スリット20の各開口孔20aを封止する封止材が接合される。封止材は、各開口孔20aを個別に封止したり、複数個を纏めて封止するなど、比較的短寸なものを複数枚接合することもできるが、生産性の観点からは、全ての開口孔20aを長尺な1つの封止材によって封止することが好ましい。封止材は、容器本体10へ接着ないし溶接等によって接合すればよい。また、封止材は、容器本体10よりも強度が低い素材とする。弾薬用容器1内において弾薬が発火した際に、内圧上昇に伴って他の部位よりも優先的に破損されなければならないためである。例えば、鉄鋼製の容器本体10に対して、封止材はアルミニウムや銅などの軟質金属製、又はポリエチレンやポリプロピレンなどの合成樹脂製、又はシリコンシーラントなどのシーラント材とする。   In addition, although not shown in figure, the sealing material which seals each opening hole 20a of the slit 20 is joined to the outer peripheral surface or internal peripheral surface of the cylindrical part 10a, in order to ensure the airtightness of the container 1 for ammunition. The The sealing material can individually seal each opening hole 20a, or can be used to join a plurality of relatively short ones such as sealing a plurality, but from the viewpoint of productivity, It is preferable to seal all the opening holes 20a with one long sealing material. What is necessary is just to join a sealing material to the container main body 10 by adhesion | attachment or welding. The sealing material is a material having a lower strength than the container body 10. This is because when the ammunition is ignited in the ammunition container 1, it must be damaged preferentially over other parts as the internal pressure increases. For example, for the container body 10 made of steel, the sealing material is made of a soft metal such as aluminum or copper, a synthetic resin such as polyethylene or polypropylene, or a sealant material such as silicon sealant.

次に、上記構成の弾薬用容器1の作用について説明する。弾薬用容器1の運搬時や一時保管時等の取扱時において、衝撃や温度上昇等の原因により弾薬用容器1内の弾薬または発射装薬が燃焼反応を引き起こした場合、発生する燃焼ガスによって弾薬用容器1内の圧力が上昇する。すると、燃焼ガスの高い圧力により封止材が他の部位に優先して破損することでスリット20が開口され、燃焼ガスがスリット20を介して外部へ積極的に放出される。これにより、弾薬用容器1の内圧上昇が抑制されて弾薬用容器1の爆発が回避され、発火時安全性が確保される。一方、容器本体10の長さL0に対するスリット20の長さL1の比及びスリット20の長さL1に対する非開口部20bの長さA1の和(ΣA1)の比が所定の条件を満たすことで、仮に運搬時等に弾薬用容器1が地面に落下しても、落下強度が確保されているので破損および気密性の損失が回避される。   Next, the operation of the ammunition container 1 having the above configuration will be described. When the ammunition container 1 is handled during transportation or temporary storage, if the ammunition or projectile in the ammunition container 1 causes a combustion reaction due to impact or temperature rise, the ammunition is generated by the generated combustion gas. The pressure in the container 1 increases. Then, the slit 20 is opened because the sealing material is preferentially damaged by the high pressure of the combustion gas, and the combustion gas is positively released to the outside through the slit 20. Thereby, the internal pressure rise of the ammunition container 1 is suppressed, the explosion of the ammunition container 1 is avoided, and the safety at the time of ignition is ensured. On the other hand, the ratio of the length L1 of the slit 20 to the length L0 of the container body 10 and the ratio of the sum of the length A1 of the non-opening portion 20b (ΣA1) to the length L1 of the slit 20 satisfy a predetermined condition. Even if the ammunition container 1 falls to the ground during transportation or the like, since the drop strength is secured, damage and loss of airtightness are avoided.

また、弾薬用容器が落下した際の破損をより回避できると共に、運搬容易性を向上するため、容器本体10の軸方向端部や中央部に、容器本体10の外面を囲むよう溶接等によって設けられた、把手状のリムを設けることもできる。   In addition, in order to further avoid damage when the ammunition container is dropped and improve ease of transportation, the container body 10 is provided by welding or the like so as to surround the outer surface of the container body 10 at the axial end or center. A handle-like rim can also be provided.

容器本体としては、板巻鋼管、継目無し鋼管、スパイラル鋼管を用いた。各鋼管の引張強度は270N/mmの鋼材を用いた。容器本体の長さL0は1126mmとした。 As the container body, a sheet steel pipe, a seamless steel pipe, and a spiral steel pipe were used. A steel material having a tensile strength of 270 N / mm 2 was used for each steel pipe. The length L0 of the container body was 1126 mm.

スリットを封止する封止材には、厚み0.5mmで粘着力が7.9N/10mmのアルミニウムテープを使用した。封止材の長さは各スリットの長さL1に対して30mm長くなるように、封止材の両端をスリットの両端から各15mmの位置に配置した。   As a sealing material for sealing the slit, an aluminum tape having a thickness of 0.5 mm and an adhesive strength of 7.9 N / 10 mm was used. Both ends of the sealing material were arranged at positions of 15 mm from both ends of the slit so that the length of the sealing material was 30 mm longer than the length L1 of each slit.

弾薬用容器の内部には、ニトロセルロース、ニトログリセリン及びニトログアニジンを主成分とするトリプルベース発射薬を13kg収容した。このトリプルベース発射薬は六角19孔形状に形成され、直径14mm及び長さ14mm、内孔径0.5mmである。   Inside the ammunition container, 13 kg of triple base propellant mainly composed of nitrocellulose, nitroglycerin and nitroguanidine was accommodated. This triple base propellant is formed in a hexagonal 19-hole shape, and has a diameter of 14 mm, a length of 14 mm, and an inner diameter of 0.5 mm.

そのうえで、容器本体へ、表1,表2および表3に示す条件で1本のスリットを軸方向と平行に形成し、落下強度及び発火時安全性を下記のように評価した。その結果も表1,2,3に示す。   Then, one slit was formed in the container body in parallel with the axial direction under the conditions shown in Table 1, Table 2 and Table 3, and the drop strength and ignition safety were evaluated as follows. The results are also shown in Tables 1, 2, and 3.

(落下強度)
弾薬用容器を地面に対して平行にした状態で2.1mの高さから落下させる落下強度試験で、次の基準で評価した。
○:容器本体が変形せず、アルミニウムテープが破れなかった。
×:容器本体が変形して、アルミニウムテープが破れた。
(Drop strength)
A drop strength test in which an ammunition container was dropped from a height of 2.1 m in a state parallel to the ground was evaluated according to the following criteria.
○: The container body was not deformed and the aluminum tape was not torn.
X: The container body was deformed and the aluminum tape was torn.

(発火時安全性)
爆薬によって1900m/sに加速された、直径15mm、質量20gの円柱形状の鋼鉄製飛翔体を弾薬用容器の円筒部側面へ衝突させて発火時安全性試験を行い、次の基準で評価した。
○:弾薬用容器が破片化することなくスリットが開口し爆発しなかった。
×:弾薬用容器が2つ以上の破片となって飛散して爆発した。
(Safety at ignition)
A column-shaped steel flying object having a diameter of 15 mm and a mass of 20 g accelerated to 1900 m / s by an explosive was made to collide with the side surface of the cylindrical portion of the ammunition container, and a safety test at the time of ignition was performed.
○: The ammunition container did not explode without opening the slit.
X: The ammunition container was scattered as two or more pieces and exploded.

Figure 2017190909
Figure 2017190909

Figure 2017190909
Figure 2017190909

Figure 2017190909
Figure 2017190909

表1,2の結果から、0.60≦L1/L0≦0.95と0.04≦A1の和/L1≦0.30の条件を同時に満たす条件のスリットを形成した実施例1〜15では、落下強度及び発火時安全性が確実に担保されていた。   From the results of Tables 1 and 2, in Examples 1 to 15 in which slits having conditions satisfying the conditions of 0.60 ≦ L1 / L0 ≦ 0.95 and 0.04 ≦ A1 / L1 ≦ 0.30 were simultaneously formed, In addition, the drop strength and safety at the time of ignition were ensured.

一方、比較例1はスパイラル鋼管であって(D1/D0)が小さすぎるため、発火時安全性が悪かった。比較例2,7は、(D1/D0)が小さすぎるため、発火時安全性が悪かった。比較例3,8は(L1/L0)が小さすぎるため、発火時安全性が悪かった。比較例4,9は(L1/L0)が大きすぎるため、蓋体の嵌合部に干渉し、火薬類が発火した際に嵌合部が変形して蓋体が飛散して発火時安全性が不足していた。また、比較例5,10は(A1の和/L1)が小さすぎるため、落下強度が悪かった。一方、比較例6,11は、(A1の和/L1)が大きすぎるため、発火時安全性が悪かった。   On the other hand, since Comparative Example 1 was a spiral steel pipe and (D1 / D0) was too small, the safety at the time of ignition was poor. In Comparative Examples 2 and 7, since (D1 / D0) was too small, the safety at the time of ignition was poor. In Comparative Examples 3 and 8, since (L1 / L0) was too small, the safety at the time of ignition was poor. In Comparative Examples 4 and 9, since (L1 / L0) is too large, it interferes with the fitting part of the lid, and when the explosives are ignited, the fitting part is deformed and the lid is scattered and safety at the time of ignition. Was lacking. In Comparative Examples 5 and 10, (sum of A1 / L1) was too small, so the drop strength was poor. On the other hand, in Comparative Examples 6 and 11, since (sum of A1 / L1) was too large, the safety at the time of ignition was poor.

1・2・3 弾薬用容器
10 容器本体
10a 円筒部
11 蓋体
20 スリット
20a 開口孔
20b 非開口部
30 連続した溶接部
1 ・ 2 ・ 3 Ammunition Container 10 Container Body 10a Cylindrical Part 11 Lid 20 Slit 20a Opening Hole 20b Non-Opening 30 Continuous Welding

Claims (2)

有底筒状の容器本体と、該容器本体の開口を塞ぐ蓋体とを有し、前記容器本体の円筒部に、複数個の開口孔が軸方向に延びる貫通した同一直線上に並んだミシン目状のスリットを有する弾薬用容器であって、
前記容器本体の円筒部は軸方向に連続した溶接部を有する鋼管であり、
前記容器本体の外径をD0、前記容器本体の厚みをD1としたとき、
0.015≦D1/D0≦0.031の関係を満たし、
前記容器本体の長さをL0、前記スリットの長さをL1、各開口孔間の非開口部の長さをA1としたとき、
0.60≦L1/L0≦0.95
0.04≦A1の和/L1≦0.30
の関係を満たす弾薬用容器。
A sewing machine having a bottomed cylindrical container body and a lid that closes the opening of the container body, and a plurality of opening holes arranged in the same straight line extending in the axial direction in the cylindrical portion of the container body An ammunition container having a slit in an eye shape,
The cylindrical portion of the container body is a steel pipe having a welding portion continuous in the axial direction,
When the outer diameter of the container body is D0 and the thickness of the container body is D1,
Satisfies the relationship of 0.015 ≦ D1 / D0 ≦ 0.031,
When the length of the container body is L0, the length of the slit is L1, and the length of the non-opening portion between the opening holes is A1,
0.60 ≦ L1 / L0 ≦ 0.95
0.04 ≦ sum of A1 / L1 ≦ 0.30
A container for ammunition that satisfies this relationship.
有底筒状の容器本体と、該容器本体の開口を塞ぐ蓋体とを有し、前記容器本体の円筒部に、複数個の開口孔が軸方向に延びる貫通した同一直線上に並んだミシン目状のスリットを有する弾薬用容器であって、
前記容器本体の円筒部は継目無し鋼管であり、
前記容器本体の外径をD0、前記容器本体の厚みをD1としたとき、
0.015≦D1/D0≦0.031の関係を満たし、
前記容器本体の長さをL0、前記スリットの長さをL1、各開口孔間の非開口部の長さをA1としたとき、
0.60≦L1/L0≦0.95
0.04≦A1の和/L1≦0.30
の関係を満たす弾薬用容器。
A sewing machine having a bottomed cylindrical container body and a lid that closes the opening of the container body, and a plurality of opening holes arranged in the same straight line extending in the axial direction in the cylindrical portion of the container body An ammunition container having a slit in an eye shape,
The cylindrical portion of the container body is a seamless steel pipe,
When the outer diameter of the container body is D0 and the thickness of the container body is D1,
Satisfies the relationship of 0.015 ≦ D1 / D0 ≦ 0.031,
When the length of the container body is L0, the length of the slit is L1, and the length of the non-opening portion between the opening holes is A1,
0.60 ≦ L1 / L0 ≦ 0.95
0.04 ≦ sum of A1 / L1 ≦ 0.30
A container for ammunition that satisfies this relationship.
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