JP3735440B2

JP3735440B2 - Push-through cylinder method for rotating chamber type cannon

Info

Publication number: JP3735440B2
Application number: JP04843197A
Authority: JP
Inventors: 盛喜吉松
Original assignee: Japan Steel Works Ltd
Current assignee: Japan Steel Works Ltd
Priority date: 1997-02-17
Filing date: 1997-02-17
Publication date: 2006-01-18
Anticipated expiration: 2017-02-17
Also published as: JPH10227597A

Description

【０００１】
【発明の属する技術分野】
本発明は、回転薬室型機関砲のプッシュスルー抽筒方法に関する。
【０００２】
【従来の技術】
回転薬室型機関砲は、複数の薬室を同一円周上に等間隔に配置したチャンバドラムを間欠的に回転させ、外部から給弾された弾薬を順次に薬室に押し込み、押し込みを完了した薬室がチャンバドラムの前方に配置された砲身の位置に一致して停止している間に、薬室内の弾薬を発火して弾丸を発射する。弾丸が発射された後の薬室には、薬莢が残つている。射撃を継続するためには、この薬莢を薬室外へ放出する必要がある。このため、薬室に新たに押し込まれる弾薬によつて薬莢の後部を押し、新たな弾薬が薬室に完全に押し込まれたとき、薬室に残る薬莢が薬室外に放出されるようになつている。薬室に残る薬莢をランマで直接押し出すことも可能であるが、この方法ではランマが薬室に侵入した後に完全に後退して抜け出すまで、チャンバドラムを回転させて次の工程に移行することができないため、発射速度の低いものとなる。
【０００３】
【発明が解決しようとする課題】
しかしながら、このような従来の回転薬室型機関砲にあつては、大きな抽筒力つまりプッシュスルーによる押し出し力が必要となるため、次のような技術的課題を有している。
射撃後に薬室に残つている薬莢は、射撃時に発生する高圧の発射ガスの作用で薬室に張りついている。この張りつき力は、薬莢の動き始めに最も大きく、動き始めると急激に低下することが知られている。上記の薬莢の抽筒方法では、大きな張りつき力に応じて薬莢の強度を高める必要がある。すなわち、張りつき力に十分に対抗して薬莢が押し出されるように、特に新たな弾薬の薬莢に変形が生ずることを防止する必要があり、必然的に薬莢の重量及び大きさが大きくなる。これにより、弾薬の収納スペースを増加し、更に、弾薬の装填力が増加することにもなる。
【０００４】
【課題を解決するための手段】
本発明は、このような従来の技術的課題に鑑みてなされたもので、その構成は、次の通りである。
請求項１の発明は、砲身１を備える砲架３にチャンバドラム２が回転自在に支持され、該チャンバドラム２の同一円周上に複数の薬室１０が形成され、回転移動する薬室１０にランマ機構４によつて弾薬７を装填した後に射撃を行い、薬室１０内に残る薬莢１２を薬室１０外に押し出す回転薬室型機関砲のプッシュスルー抽筒方法であつて、
チャンバドラム２の薬室１０の後面付近に設けられ、隣接する薬室１０の間でチャンバドラム２の回転方向で次第に後方に突出する傾斜面２１ａ及び段差２１ｂからなるカム面２１を有するカム部２０と、
新たな弾薬７の装填前で射撃後の薬莢１２が残る薬室１０₆の位置として砲架３に固設され、ばね３０によつて前方に常時付勢されるウエイト部材３２を備え、ウエイト部材３２が、カム面２１と係合する係合部３２ａ及び打撃部３２ｂを有する衝撃機構８とを備え、
チャンバドラム２の間欠的回転により、ばね３０を弾性的に圧縮させながら、カム面２１の傾斜面２１ａと係合する係合部３２ａによつてウエイト部材３２が次第に後方に押し込まれ、新たな弾薬７の装填前で射撃後の薬莢１２が残る薬室１０₆に前記打撃部３２ｂが合致したときに該係合部３２ａがカム面２１の段差２１ｂに沿つて解放され、該打撃部３２ｂが、弾丸１１を発射した後の薬室１０₆内に残る薬莢１２の後面１２ａに打撃を加え、該薬莢１２に抽筒方向の移動を与えることを特徴とする回転薬室型機関砲のプッシュスルー抽筒方法である。
請求項２は、傾斜面２１ａ及び段差２１ｂを備えるカム部２０のカム面２１が、隣接する薬室１０の間の全てに形成され、打撃部３２ｂが薬莢１２の後面１２ａに打撃を加えた後のチャンバドラム２の間欠的回転により、該傾斜面２１ａに係合する係合部３２ａを介してウエイト部材３２が後退復帰する際、該打撃部３２ｂが薬室１０₆の側壁を越えて後退復帰するように、該傾斜面２１ａの傾斜角度が設定されていることを特徴とする請求項１の回転薬室型機関砲のプッシュスルー抽筒方法である。
【０００５】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。
図１〜図５は、本発明に係るプッシュスルー抽筒装置を備える回転薬室型機関砲の１実施の形態を示す。図中において符号３は砲架を示し、この砲架３には、チャンバドラム２が回転自在に支持され、かつ、１個の砲身１が前端下部に固設されている。チャンバドラム２は、その前部の円筒状部２ａの外周部に円形断面の複数（本例では６個）の薬室１０が形成されている。各薬室１０は、砲身１と中心軸線が平行をなすように等間隔で形成されている。図２で所定位置（下端部）に位置する薬室１０₅は、図１に示す砲身１と中心軸線が合致している。従つて、チャンバドラム２が後記する間欠駆動機構５によつて駆動されて間欠的に回転し、薬室１０₄，薬室１０₃，薬室１０₂，薬室１０₁，薬室１０₆がそれぞれ薬室１０₅の位置にくることにより、砲身１と中心軸線が合致する。
【０００６】
薬室１０よりも後方位置となる砲架３の中間部には、図２に示すように給弾孔３ｃが形成されている。弾丸１１及び薬莢１２を有する弾薬７は、給弾孔３ｃを通じて外部から供給され、ランマ機構４によつて所定の薬室１０に送り込まれる。給弾孔３ｃに対応する箇所では、ランマ機構４のランマ４ａが図１に仮想線で示すように最も後退した位置を採り、この位置を採るランマ４ａの前方に弾薬７が次々に供給される。ランマ機構４は、チャンバドラム２の間欠運動に連動してランマ４ａに前進及び後退移動を与え、ランマ機構４の前方に供給された弾薬７を射撃前、つまり射撃が行なわれる薬室１０₅に達する前に薬室１０内に押し込んで装填すると共に、射撃に際して砲架３の閉鎖部９と干渉しない位置にまで後退する機能を有すればよい。
【０００７】
また、砲架３の下端部中央に閉鎖部９が形成されている。この閉鎖部９は、下端部の薬室１０₅の後部を閉鎖する。この閉鎖部９には、撃発のための発火装置１４を設けてある。
【０００８】
チャンバドラム２は、モータ６を備える間欠駆動機構５によつて駆動されて回転する。図示の例では、６個の薬室１０₁〜１０₆を備えているので、１ステップはチャンバドラム２の６０°の回転からなり、その後に停止する。回転と停止とからなるステップの時間つまり発射速度は、間欠駆動機構５のモータ６の速度を増減変えて調節する。
【０００９】
そして、チャンバドラム２の円筒状部２ａの後部の所定位置に、抽筒補助機構１８を設ける。抽筒補助機構１８は、チャンバドラム２の円筒状部２ａの後面の外径部に形成したカム部２０と、新たな弾薬７の装填前で弾丸１１が発射された後の薬莢１２が残る薬室１０₆の後方に位置させて配設した衝撃機構８とを有する。カム部２０は、隣接する薬室１０₁〜１０₆の間にそれぞれ同様形状として形成され、カム部２０のカム面２１は、カム部２０の後面の円周上に形成され、チャンバドラム２が図２に示す回転方向Ａに間欠的に回転することにより、次第に後方に突出する周方向の傾斜面２１ａ及び前後方向に延びる段差２１ｂを有している。
【００１０】
衝撃機構８は、新たな弾薬７の装填前で射撃後の薬莢１２が残る薬室１０₆の後面付近に位置させてチャンバドラム２に固設した有底筒状のブラケット３１と、ブラケット３１に摺動自在に嵌合し、コイルスプリングからなるばね３０によつて常時前方に突出付勢されるウエイト部材３２とを有する。ウエイト部材３２は、ブラケット３１に摺動自在に嵌合した状態で、前方に突出するように配置され、カム部２０の傾斜面２１ａ及び段差２１ｂからなるカム面２１と係合する係合部３２ａを有すると共に、前方に突出する打撃部３２ｂを有する。
【００１１】
カム部２０及びウエイト部材３２は、次の位置関係を有する。すなわち、衝撃機構８のウエイト部材３２は、チャンバドラム２が間欠回転をする間に、係合部３２ａがカム部２０の傾斜面２１ａに係合することによつてストロークＳ₁だけ押し込まれ、ばね３０を圧縮する。チャンバドラム２が間欠回転を行い、新たな弾薬７の装填前で射撃後の薬莢１２が残る薬室１０₆に打撃部３２ｂが合致したとき（望ましくはチャンバドラム２が停止する直前）に係合部３２ａが傾斜面２１ａとの係合を離脱し、係合部３２ａが段差２１ｂに沿つて前方に移動することによつてウエイト部材３２が突出する。このとき、打撃部３２ｂが薬室１０₆に残つている薬莢１２の後方に位置している。これにより、打撃部３２ｂの先端が薬室１０₆に残つている薬莢１２の後部に衝突し、薬莢１２を前方つまり抽筒方向に押し出すように衝撃を加える。
【００１２】
前方に移動した係合部３２ａは、チャンバドラム２の間欠回転により、速やかにカム面２１の傾斜面２１ａとの係合を開始し、ウエイト部材３２の後方に向かう復帰移動を開始させる。そして、背面視で、打撃部３２ｂが薬室１０₆に対応する箇所を移動し終わるときには、ウエイト部材３２が後方に向けて所定長さの復帰移動を行い、打撃部３２ｂが、薬室１０₆の側壁よりも後方に復帰している。しかして、打撃部３２ｂが薬莢１２の後面１２ａに打撃を加えた後のチャンバドラム２の間欠的回転により、傾斜面２１ａに係合する係合部３２ａによつてウエイト部材３２が後退復帰する際、打撃部３２ｂが薬室１０₆の側壁を越えて後退復帰するように、傾斜面２１ａの傾斜角度が設定されている。
【００１３】
すなわち、図５に示すようにウエイト部材３２の係合部３２ａがカム部２０の傾斜面２１ａとの係合を離脱してストロークＳ₁だけ前方に突出し、同時に打撃部３２ｂもストロークＳ₁だけ前方に突出して薬莢１２の後面１２ａに打撃を加え、薬莢１２を長さＳ₁₁だけ抽筒方向に移動させる。この打撃部３２ｂが打撃を加える位置から薬室１０₆の側壁までの周方向前側の距離をＬ₁とする。次いで、チャンバドラム２の間欠回転によつて打撃部３２ｂが距離Ｌ₁を相対移動する間に、係合部３２ａはカム部２０の傾斜面２１ａに沿つてＳ₁₀だけ後退移動する。一方、打撃を加えた状態の打撃部３２ｂの先端と薬室１０₆の側壁後端面との間の前後方向の長さは上記Ｓ₁₁であり、Ｓ₁₀＞Ｓ₁₁を満たすように傾斜面２１ａの傾斜角度を設定する。これにより、打撃部３２ｂが薬室１０₆の側壁と干渉することなく、チャンバドラム２の間欠回転が継続される。なお、ウエイト部材３２のストロークＳ₁の移動によつて薬莢１２に与える移動長さＳ₁₁は、ウエイト部材３２のストロークＳ₁に比して極わずかで良く、その差（Ｓ₁−Ｓ₁₁）によつてばね３０の弾発力を受けるウエイト部材３２が加速される。
【００１４】
ランマ機構４の具体例について図６，図７を参照して説明する。このランマ機構４は、ランマ４ａをカムドラム２３によつて駆動するようになつている。カムドラム２３は、チャンバドラム２の内部に前方（図６上で左方）から挿入した状態で、前端部２３ａが砲架３に片持ち状態で固定されている。チャンバドラム２は、前端部が軸受２７にて、また、後端部が軸受２８にて、それぞれカムドラム２３に回転自在に支持され、更に後端部が軸受２９にて、砲架３に回転自在に支持されている。従つて、チャンバドラム２は、砲架３及びカムドラム２３に対して回転自在である。
【００１５】
チャンバドラム２の円筒状部２ａよりも後側には、薬室１０に合わせてランマ案内溝２ｄが形成され、このランマ案内溝２ｄに薬室１０の数と適合した数量のランマ４ａが摺動自在に係合している。また、ランマ案内溝２ｄの両側には、前後方向の所定間隔として弾薬保持部２ｂが外径方向に突設され、対向する一対の弾薬保持部２ｂによつて半円形状の弾薬案内部２ｃを形成している。弾薬７は、図２に示す給弾孔３ｃを通じて外部から供給され、薬室１０よりも後方位置となる所定の弾薬案内部２ｃに送り込まれる。給弾孔３ｃに対応する箇所では、ランマ４ａが図６に仮想線で示すように最も後退した位置を採り、この位置を採るランマ４ａの前方に弾薬７が次々に供給される。
【００１６】
カムドラム２３は、その後半部、つまり薬室１０よりも後方位置の外周面に無端つる巻状のカム溝２３ｂが個別に形成され、カム溝２３ｂに各ランマ４ａの突起部４ｂがそれぞれ摺動自在に係合している。しかして、各ランマ４ａは、それぞれのランマ案内溝２ｄに案内されながら、カム溝２３ｂの溝形状に沿つて薬室１０の後方で弾薬保持部２ｂの間を前後に移動することができる。
【００１７】
間欠駆動機構５によつてチャンバドラム２が一方向（図２に示す矢印Ａ方向）に１ステップ（６０°）回転すれば、各ランマ４ａは係合するカム溝２３ｂの溝形状つまり傾きに応じて前進又は後退移動する。各ランマ４ａは、図２に示す薬室１０₁〜１０₄の間で３ステップの前進を行なつて弾薬７を薬室１０に押し込むと共に、薬室１０に残る薬莢１２を前方に押し出し、薬室１０₄〜１０₁の間で最大３ステップの後退を行なつて元位置に復帰する。薬室１０₄〜１０₁の間では、１ステップでランマ４ａを元位置に復帰させることも可能であり、その場合には各ランマ４ａに前進及び後退をしない停止ステップを組み込むこともできる。しかして、機関砲は、弾薬７を薬室１０に押し込む動作を行うことにより、薬室１０内に残る薬莢１２が前方に押し出されて排出されるプッシュスルー方式を構成している。
【００１８】
次に、作用について説明する。
いま、給弾孔３ｃから次々に供給された弾薬７が、それぞれの弾薬案内部２ｃ又は薬室１０に保持されているものとする。間欠駆動機構５によつてチャンバドラム２が一方向（図２に示す矢印Ａ方向）に１ステップ（６０°）回転すれば、各ランマ４ａは係合するカム溝２３ｂの溝形状つまり傾きに応じて前進又は後退移動する。図２は、ランマ４ａが、カム溝２３ｂに沿つて前進３ステップ、後退（及び停止）３ステップとした例を示している。薬室１０₁〜１０₄に対応する間で前進３ステップを採るランマ４ａは、弾薬７を薬室１０に押し込む動作を行い、同時に薬室１０に残る薬莢１２を前方に押し出して排出する動作を行い、また、薬室１０₄〜１０₁に対応する間で後退ステップを採るランマ４ａは、後退作動を行なつて当初位置に復帰する。従つて、チャンバドラム２が間欠的に３６０°回転する間に、ランマ４ａは前後進（及び停止）の６ステップを行なう。
【００１９】
この機関砲では、弾薬７を砲身１と合致する前の薬室１０に向けて装填し、その後に薬室１０₅の位置で射撃を行うと共に、薬室１０に残つている薬莢１２は新たな弾薬７の装填によつて前方へ押し出す。従つて、ランマ４ａの後退作動は、弾薬７（又は薬莢１２）と関係なく行なわれる。
【００２０】
弾薬７が給弾孔３ｃから弾薬案内部２ｃに供給された状態では、上述したようにランマ４ａが図１に仮想線で示すように最も後退した位置を採つている。その後、チャンバドラム２の回転に伴つてランマ４ａが前進を開始し、薬室１０₁〜１０₄に対応する間で、弾薬７が薬室１０に次第に押し込まれて装填が完了する。薬室１０₁〜１０₄に対応する間では、未だ、薬室１０の前方が砲身１によつて支障されず開放されているので、薬室１０内に残つている薬莢１２が前方に押し出されながら新たな弾薬７が装填される。
【００２１】
その後、弾薬７を薬室１０内に残したままでランマ４ａが後退移動に移行し、薬室１０₅の位置で薬室１０₅の後部が閉鎖部９によつて閉鎖される。この状態で発火装置１４の作用によつて弾薬７が撃発され、弾丸１１が砲身１から発射され、薬莢１２が薬室１０₅内に残る。ランマ４ａは、薬室１０₄〜１０₁の間で適宜に後退し、図１に仮想線で示す元位置にまで復帰する。
【００２２】
チャンバドラム２の間欠回転により、薬莢１２が残る薬室１０₅が回転移動を始めると、ウエイト部材３２の係合部３２ａがカム部２０の傾斜面２１ａを摺動しながら、ウエイト部材３２が後方に向けて次第に押し戻される。その際、ばね３０が弾性的に圧縮変形する。チャンバドラム２の間欠回転により、薬莢１２が残る薬室１０₅が薬室１０₆の位置に達すれば、ばね３０の弾発力を受けるウエイト部材３２は、図４に示すように係合部３２ａが傾斜面２１ａによる支持を解放されて段差２１ｂに沿つてストロークＳ₁だけ前方に突出する。同時に、ウエイト部材３２の打撃部３２ｂが前方に突出し、薬莢１２の後面１２ａに衝突する。
【００２３】
これにより、薬室１０₆に静的な摩擦力によつて凝着していた薬莢１２が若干移動（Ｓ₁₁）する。薬室１０₅においては、チャンバドラム２の１ステップの間欠回転の後の停止の間に、次の弾丸１１が発射される。前述したようにランマ４ａは、薬室１０₄〜１０₁の間で適宜ステップの後退を行なつて元位置に復帰しようとしている。従つて、薬室１０₅〜１０₁の間で間欠回転後に停止している薬室１０₆に合わせて抽筒補助機構１８を配設することにより、抽筒補助機構１８とランマ４ａとが干渉を生ずることもない。
【００２４】
引き続いてなされるチャンバドラム２の間欠回転により、ウエイト部材３２は、図４に示すように係合部３２ａが次位の傾斜面２１ａに摺接しながらストロークＳ₁だけ後退復帰する。このようにして、薬室１０₅の位置で弾丸１１が発射された後の薬莢１２が薬室１０₆の位置に達することにより、次々にウエイト部材３２の打撃部３２ｂによる打撃を受けて若干移動して動き易くなる。これにより、薬室１０₁〜１０₄に対応する間で行なわれる薬室１０への新たな弾薬７の装填作業が、残つている薬莢１２を前方に押し出しながら円滑に行なわれる。
【００２５】
ところで、上記の１実施の形態にあつては、カムドラム２３のカム溝２３ｂに各ランマ４ａの突起部４ｂを摺動自在に係合させ、ランマ４ａが、ランマ案内溝２ｄに案内されながら、カム溝２３ｂの溝形状に従つて弾薬保持部２ｂの間を前後に移動するようにした。しかし、ランマ機構４としては、間欠駆動機構５とは別個の駆動機構によつて作動して弾薬７を射撃前の所定の薬室１０₁〜１０₄内に押し込んで装填する装填機構とすることもできる。
【００２６】
【発明の効果】
以上の説明によつて理解されるように、本発明に係る回転薬室型機関砲のプッシュスルー抽筒方法によれば、下記の効果を奏することができる。
（１）薬莢を薬室から押し出すとき、最も大きな力を要する初期の薬莢抽筒作動をばねの弾発力によつて作動する衝撃機構によつて行なう。これにより、その後の薬莢の抽筒に要する力が小さくなる。従つて、新たな弾薬を押し込んで薬莢を押し出す際、弾薬に掛かる力が小さくて済み、ランマ機構の駆動力を低減させることができる。その結果、新たに装填される弾薬に変形を生じて射撃不能となる不具合を防止することと、薬莢の強度を小さくして、軽量化及び小形化を図ることとが良好に両立する。
【００２７】
（２）ランマ機構による薬莢の抽筒力が小さくて済むので、ランマ機構の強度を小さくすることができる。その結果、ランマ機構の軽量化が可能となり、摩耗、焼付き等のトラブルも少なくなる。
【図面の簡単な説明】
【図１】本発明の１実施の形態に係る機関砲を示す断面図。
【図２】同じく図１のＩＩ−ＩＩ線断面図。
【図３】同じく図２のＩＩＩ−ＩＩＩ線断面図。
【図４】同じく図３のＩＶ−ＩＶ線断面図。
【図５】同じくウエイト部材の係合部及び打撃部の作用説明図。
【図６】同じくランマ機構を備える機関砲をカム溝を一部省略して示す断面図。
【図７】同じく図６の要部を拡大して示す断面図。
【符号の説明】
１：砲身、２：チャンバドラム、３：砲架、４：ランマ機構、５：間欠駆動機構、７：弾薬、８：衝撃機構、１０₁〜１０₆：薬室、１１：弾丸、１２：薬莢、１２ａ：後面、１８：抽筒補助機構、２０：カム部、２１：カム面、２１ａ：傾斜面、２１ｂ：段差、３０：ばね、３２：ウエイト部材、３２ａ：係合部、３２ｂ：打撃部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a push-through drawing method for a rotating chamber type cannon.
[0002]
[Prior art]
Rotating chamber type cannons intermittently rotate chamber drums with multiple chambers arranged at equal intervals on the same circumference, and sequentially push the ammunition supplied from the outside into the chamber, completing the push-in While the closed chamber is stopped in accordance with the position of the barrel arranged in front of the chamber drum, the bullets are fired by firing the ammunition in the chamber. There is a cartridge case in the chamber after the bullet is fired. In order to continue shooting, it is necessary to release this cartridge out of the chamber. For this reason, when the ammunition is pushed into the chamber, the rear of the cartridge case is pushed, and when new ammunition is completely pushed into the chamber, the cartridge case remaining in the chamber is released out of the chamber. Yes. It is also possible to push the cartridge case remaining in the chamber directly with a ramma, but in this method, the chamber drum can be rotated and moved to the next process until the rammer completely moves backward after it enters the chamber. Because it can not, it will be a low firing speed.
[0003]
[Problems to be solved by the invention]
However, such a conventional rotating chamber type cannon has the following technical problems because it requires a large extraction force, that is, push-out force by push-through.
The cartridge case remaining in the chamber after shooting sticks to the chamber due to the action of high-pressure gas generated during shooting. It is known that this sticking force is greatest at the beginning of the movement of the shell, and decreases rapidly when it starts to move. In the above-mentioned cartridge case drawing method, it is necessary to increase the strength of the case according to the large sticking force. That is, it is necessary to prevent the cartridge case of new ammunition from being deformed so that the cartridge case is pushed out sufficiently against the sticking force, and the weight and size of the cartridge case inevitably increase. This increases the storage space for ammunition and also increases the loading capacity of ammunition.
[0004]
[Means for Solving the Problems]
The present invention has been made in view of such a conventional technical problem, and the configuration thereof is as follows.
According to the first aspect of the present invention, a chamber drum 2 is rotatably supported on a gun rack 3 having a barrel 1, a plurality of chambers 10 are formed on the same circumference of the chamber drum 2, and the chamber 10 rotates and moves. In the push-through method of the rotary chamber type cannon, which is shot after the ammunition 7 is loaded by the Ranma mechanism 4 and the shell 12 remaining in the chamber 10 is pushed out of the chamber 10.
A cam portion 20 that is provided near the rear surface of the chamber 10 of the chamber drum 2 and has a cam surface 21 that includes an inclined surface 21 a and a step 21 b that gradually protrude rearward in the rotation direction of the chamber drum 2 between adjacent chambers 10. When,
A weight member 32 is provided which is fixed to the gun rack 3 as a position of the chamber 10 ₆ where the shell 12 after shooting is left before the new ammunition 7 is loaded, and is always urged forward by a spring 30. 32 includes an impact mechanism 8 having an engaging portion 32a and a striking portion 32b that engage with the cam surface 21;
Due to the intermittent rotation of the chamber drum 2, the weight member 32 is gradually pushed backward by the engaging portion 32a engaged with the inclined surface 21a of the cam surface 21 while elastically compressing the spring 30, and new ammunition When the striking portion 32b is aligned with the chamber 10 ₆ where the shell 12 after shooting is left before loading 7, the engaging portion 32a is released along the step 21b of the cam surface 21, and the striking portion 32b Push-through extraction of a rotating chamber type cannon characterized by striking the rear surface 12a of the cartridge case 12 remaining in the chamber 10 ₆ after the bullet 11 has been fired to give the cartridge case 12 movement in the direction of the extraction cylinder. It is a cylinder method.
In claim 2, after the cam surface 21 of the cam portion 20 having the inclined surface 21a and the step 21b is formed in all between the adjacent chambers 10, and the hitting portion 32b hits the rear surface 12a of the cartridge case 12 of the intermittent rotation of the chamber drum 2, when the weight member 32 through the engaging portion 32a which engages with the inclined surface 21a is retracted return, backward return the striking portion 32b is beyond the side walls for the chamber ₁₀₆ Thus, the tilt angle of the inclined surface 21a is set, and the push-through extraction method for the rotating chamber type cannon of claim 1 is characterized.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 5 show an embodiment of a rotating chamber type cannon equipped with a push-through cylinder device according to the present invention. In the figure, reference numeral 3 denotes a gun mount, on which the chamber drum 2 is rotatably supported, and one gun barrel 1 is fixed to the lower front end. The chamber drum 2 is formed with a plurality of (six in this example) chambers 10 having a circular cross section on the outer peripheral portion of the cylindrical portion 2a at the front thereof. Each chamber 10 is formed at equal intervals so that the barrel 1 and the central axis are parallel. In the chamber 10 ₅ located at a predetermined position (lower end) in FIG. 2, the barrel 1 shown in FIG. Therefore, the chamber drum 2 is driven by the intermittent drive mechanism 5 described later and rotates intermittently, and the chamber 10 ₄ , the chamber 10 ₃ , the chamber 10 ₂ , the chamber 10 ₁ , and the chamber 10 ₆ are opened. The gun barrel 1 and the central axis coincide with each other by coming to the position of the chamber 10 ₅ .
[0006]
As shown in FIG. 2, a bullet feed hole 3 c is formed in the middle part of the gun rack 3 which is located behind the chamber 10. The ammunition 7 having the bullet 11 and the cartridge case 12 is supplied from the outside through the bullet feed hole 3 c and is sent into the predetermined medicine chamber 10 by the ramper mechanism 4. At the location corresponding to the bullet feed hole 3c, the runner 4a of the runner mechanism 4 takes the most retracted position as shown by the phantom line in FIG. 1, and the ammunition 7 is successively supplied in front of the runner 4a taking this position. . The rammer mechanism 4 gives the rammer 4a forward and backward movement in conjunction with the intermittent movement of the chamber drum 2, and the ammunition 7 supplied to the front of the rammer mechanism 4 is shot before the shot, that is, into the chamber 10 ₅ where the shot is performed. Before reaching the chamber 10, it may be pushed into the chamber 10 and loaded, and may have a function of retreating to a position where it does not interfere with the closing portion 9 of the gun rack 3 during shooting.
[0007]
A closing portion 9 is formed at the center of the lower end portion of the gun rack 3. The closing part 9 closes the rear part of the lower chamber 10 ₅ . The closing part 9 is provided with an ignition device 14 for firing.
[0008]
The chamber drum 2 is driven to rotate by an intermittent drive mechanism 5 having a motor 6. In the illustrated example, since six chambers 10 ₁ to 10 ₆ are provided, one step consists of rotation of the chamber drum 2 by 60 ° and then stops. The time of step consisting of rotation and stop, that is, the firing speed, is adjusted by increasing or decreasing the speed of the motor 6 of the intermittent drive mechanism 5.
[0009]
Then, an extraction auxiliary mechanism 18 is provided at a predetermined position on the rear portion of the cylindrical portion 2a of the chamber drum 2. The extraction cylinder assisting mechanism 18 has a cam portion 20 formed on the outer diameter portion of the rear surface of the cylindrical portion 2a of the chamber drum 2 and a medicine in which the cartridge case 12 after the bullet 11 is fired before the new ammunition 7 is loaded is left. And an impact mechanism 8 disposed behind the chamber 10 ₆ . The cam portion 20 is formed in the same shape between the adjacent chambers 10 ₁ to 10 ₆ , the cam surface 21 of the cam portion 20 is formed on the circumference of the rear surface of the cam portion 20, and the chamber drum 2 is By intermittently rotating in the rotation direction A shown in FIG. 2, a circumferentially inclined surface 21 a that gradually protrudes rearward and a step 21 b that extends in the front-rear direction are provided.
[0010]
The impact mechanism 8 includes a bottomed cylindrical bracket 31 fixed to the chamber drum 2 and positioned in the vicinity of the rear surface of the chamber 10 ₆ where the shell 12 after shooting is left before the new ammunition 7 is loaded. And a weight member 32 that is slidably fitted and is always projected forward and biased by a spring 30 comprising a coil spring. The weight member 32 is slidably fitted to the bracket 31 and is disposed so as to protrude forward, and is engaged with the cam surface 21 including the inclined surface 21a and the step 21b of the cam portion 20. And a striking portion 32b projecting forward.
[0011]
The cam part 20 and the weight member 32 have the following positional relationship. That is, the weight member 32 of the impact mechanism 8 is pushed by the stroke S ₁ by the engagement portion 32 a engaging the inclined surface 21 a of the cam portion 20 while the chamber drum 2 rotates intermittently, and the spring 30 is compressed. The chamber drum 2 is intermittently rotated, and is engaged when the striking portion 32b is aligned with the chamber 10 ₆ where the shell 12 after shooting is left before the new ammunition 7 is loaded (preferably immediately before the chamber drum 2 stops). When the portion 32a is disengaged from the inclined surface 21a and the engaging portion 32a moves forward along the step 21b, the weight member 32 protrudes. At this time, the striking portion 32b is located behind the cartridge case 12 remaining in the chamber 10 ₆ . Thus, collides with the rear of the cartridge case 12 the tip of the striking portion 32b is Zantsu the drug chamber _106, bombarding to push cartridges 12 to the front, that抽筒direction.
[0012]
The engagement portion 32a that has moved forward starts the engagement with the inclined surface 21a of the cam surface 21 promptly by the intermittent rotation of the chamber drum 2, and starts the return movement toward the rear of the weight member 32. Then, when the striking portion 32b finishes moving in a position corresponding to the chamber 10 ₆ in the rear view, the weight member 32 performs a return movement of a predetermined length toward the rear, and the striking portion 32b is moved to the chamber 10 _6. It has returned to the back rather than the side wall. Therefore, when the weight member 32 moves backward by the engaging portion 32a engaged with the inclined surface 21a due to the intermittent rotation of the chamber drum 2 after the hitting portion 32b hits the rear surface 12a of the cartridge case 12. The inclination angle of the inclined surface 21a is set so that the striking portion 32b moves backward and returns beyond the side wall of the chamber 10 ₆ .
[0013]
That protrudes forward by a stroke S ₁ engaging portion 32a of the weight member 32 as shown in FIG. 5 is disengaged from engagement with the inclined surface 21a of the cam portion 20, only the striking portion 32b is also a stroke S ₁ at the same time forward projecting the striking added to the surface 12a after the cartridge case 12, is moved by the抽筒direction length S ₁₁ the cartridge 12. The distance on the front side in the circumferential direction from the position where the striking portion 32b strikes to the side wall of the chamber 10 ₆ is denoted by L ₁ . Next, while the striking portion 32 b relatively moves by the distance L _{1 due} to the intermittent rotation of the chamber drum 2, the engaging portion 32 a moves backward by S ₁₀ along the inclined surface 21 a of the cam portion 20. On the other hand, longitudinal length between the tip and the Kusurishitsu 10 ₆ sidewalls rear end face of the striking portion 32b of the state plus striking is the S _11, the inclined surface 21a so as to satisfy S _10> S ₁₁ Set the tilt angle. Thereby, the intermittent rotation of the chamber drum 2 is continued without the striking part 32b interfering with the side wall of the chamber 10 ₆ . Incidentally, the stroke S moving length S ₁₁ to provide the I connexion cartridge 12 to move _one of the weight member 32, may be the only electrode than the stroke S ₁ of the weight member 32, the difference (S ₁ -S ₁₁₎ Thus, the weight member 32 receiving the elastic force of the spring 30 is accelerated.
[0014]
A specific example of the runner mechanism 4 will be described with reference to FIGS. The ramper mechanism 4 drives the ramper 4a by the cam drum 23. The cam drum 23 is inserted into the chamber drum 2 from the front (left side in FIG. 6), and the front end 23a is fixed to the gun mount 3 in a cantilever state. The chamber drum 2 is rotatably supported on the cam drum 23 at the front end portion by the bearing 27 and at the rear end portion by the bearing 28, and further, the rear end portion is freely rotatable by the gun mount 3 by the bearing 29. It is supported by. Accordingly, the chamber drum 2 is rotatable with respect to the gun mount 3 and the cam drum 23.
[0015]
On the rear side of the cylindrical portion 2a of the chamber drum 2, a rammer guide groove 2d is formed in alignment with the drug chamber 10, and a number of rammers 4a matching the number of the drug chambers 10 slide in the rammer guide groove 2d. Engage freely. Further, ammunition holding portions 2b are provided on both sides of the ramp guide groove 2d in the outer diameter direction as predetermined intervals in the front-rear direction, and a semicircular ammunition guide portion 2c is formed by a pair of opposing ammunition holding portions 2b. Forming. The ammunition 7 is supplied from the outside through the bullet feed holes 3 c shown in FIG. 2, and is sent to a predetermined ammunition guide portion 2 c that is located behind the medicine chamber 10. At the location corresponding to the bullet feed hole 3c, the runner 4a takes the most retracted position as shown by the phantom line in FIG. 6, and the ammunition 7 is successively supplied in front of the runner 4a taking this position.
[0016]
The cam drum 23 is individually formed with endless helical cam grooves 23b on the rear half thereof, that is, on the outer peripheral surface at a position rearward of the chamber 10, and the protrusions 4b of the rammers 4a are slidable in the cam grooves 23b. Is engaged. Thus, each luma 4a can move back and forth between the ammunition holders 2b behind the chamber 10 along the groove shape of the cam groove 23b while being guided by the respective luma guide grooves 2d.
[0017]
When the chamber drum 2 is rotated by one step (60 °) in one direction (direction of arrow A shown in FIG. 2) by the intermittent drive mechanism 5, each rammer 4a corresponds to the groove shape, that is, the inclination of the cam groove 23b to be engaged. Move forward or backward. Each rammer 4a advances three steps between the chambers 10 ₁ to 10 ₄ shown in FIG. 2 to push the ammunition 7 into the chamber 10 and push the cartridge 12 remaining in the chamber 10 forward. Perform a maximum of 3 steps of retraction between the chambers 10 ₄ to 10 ₁ and return to the original position. Between the chambers 10 ₄ to 10 ₁ , it is possible to return the rammer 4a to the original position in one step. In this case, a stop step that does not advance and retreat can be incorporated in each rammer 4a. Thus, the cannon constitutes a push-through method in which the cartridge case 12 remaining in the chamber 10 is pushed forward and discharged by performing an operation of pushing the ammunition 7 into the chamber 10.
[0018]
Next, the operation will be described.
Now, it is assumed that the ammunition 7 successively supplied from the bullet supply holes 3c is held in the respective ammunition guides 2c or the chemical chambers 10. When the chamber drum 2 is rotated by one step (60 °) in one direction (direction of arrow A shown in FIG. 2) by the intermittent drive mechanism 5, each rammer 4a corresponds to the groove shape, that is, the inclination of the cam groove 23b to be engaged. Move forward or backward. FIG. 2 shows an example in which the runner 4a has three steps forward and three steps backward (and stopped) along the cam groove 23b. The ramma 4a, which takes three steps forward while corresponding to the chambers 10 ₁ to 10 ₄ , performs an operation to push the ammunition 7 into the chamber 10 and simultaneously pushes the cartridge case 12 remaining in the chamber 10 forward and discharges it. The rammer 4a that performs the retreating step during the period corresponding to the chambers 10 ₄ to 10 ₁ performs the retreating operation and returns to the initial position. Therefore, while the chamber drum 2 is intermittently rotated 360 °, the ramper 4a performs forward and backward (and stop) six steps.
[0019]
In this cannon, the ammunition 7 is loaded toward the chamber 10 before matching the barrel 1, and then fired at the position of the chamber 10 ₅ , and the cartridge case 12 remaining in the chamber 10 is a new one. Pushing forward by loading ammunition 7. Therefore, the retreating operation of the rammer 4a is performed regardless of the ammunition 7 (or the cartridge case 12).
[0020]
In a state where the ammunition 7 is supplied from the bullet supply hole 3c to the ammunition guide portion 2c, as described above, the rammer 4a takes the most retracted position as indicated by the phantom line in FIG. Thereafter, as the chamber drum 2 rotates, the rammer 4a starts moving forward, and the ammunition 7 is gradually pushed into the chamber 10 while corresponding to the chambers 10 ₁ to 10 ₄ to complete the loading. In the period corresponding to the chambers 10 ₁ to 10 ₄ , since the front of the chamber 10 is still open without being hindered by the gun barrel 1, the cartridge case 12 remaining in the chamber 10 is pushed forward. However, a new ammunition 7 is loaded.
[0021]
Thereafter, rammer 4a while leaving the ammunition 7 to Kusurishitsu 10 is shifted to backward movement, the rear for the chamber ₁₀₅ at a position of the chamber ₁₀₅ is by connexion closed closure 9. In this state, the ammunition 7 is fired by the action of the firing device 14, the bullet 11 is fired from the barrel 1, and the cartridge case 12 remains in the chamber 10 ₅ . Ranma 4a is appropriately retracted between chambers 10 ₄ to 10 ₁ and returned to the original position indicated by the phantom line in FIG.
[0022]
When the chamber 10 ₅ where the cartridge case 12 remains due to the intermittent rotation of the chamber drum 2, the engagement member 32a of the weight member 32 slides on the inclined surface 21a of the cam portion 20 while the weight member 32 moves backward. It is pushed back gradually toward. At that time, the spring 30 is elastically compressed and deformed. When the chamber 10 _{5 in} which the cartridge case 12 remains due to the intermittent rotation of the chamber drum 2 reaches the position of the chamber 10 ₆ , the weight member 32 that receives the elastic force of the spring 30 has an engaging portion 32a as shown in FIG. There projects forwardly been stepped 21b release the support by the inclined surface 21a only along connexion stroke S _1. At the same time, the striking portion 32b of the weight member 32 projects forward and collides with the rear surface 12a of the cartridge case 12.
[0023]
As a result, the cartridge case 12 adhered to the chamber 10 ₆ by a static frictional force slightly moves (S ₁₁ ). In the chamber 10 ₅ , the next bullet 11 is fired while the chamber drum 2 is stopped after one step of intermittent rotation. As described above, the rammer 4a attempts to return to the original position by appropriately moving back the steps between the chambers 10 ₄ to 10 ₁ . Accordingly, by providing the extraction cylinder assisting mechanism 18 in accordance with the chamber 10 ₆ stopped after intermittent rotation between the chambers 10 ₅ to 10 ₁ , the extraction cylinder auxiliary mechanism 18 and the rammer 4a interfere with each other. Will not occur.
[0024]
As a result of the intermittent rotation of the chamber drum 2 that is subsequently performed, the weight member 32 retreats back by the stroke S ₁ while the engaging portion 32a is in sliding contact with the next inclined surface 21a as shown in FIG. In this way, the cartridge case 12 after the bullet 11 is fired at the position of the chamber 10 ₅ reaches the position of the chamber 10 ₆ , so that it is successively moved by being hit by the hitting portion 32b of the weight member 32 one after another. And become easy to move. Thereby, the loading operation of the new ammunition 7 to the chamber 10 performed while corresponding to the chambers 10 ₁ to 10 ₄ is smoothly performed while pushing the remaining cartridge 12 forward.
[0025]
By the way, in the above-described one embodiment, the protrusion 4b of each luma 4a is slidably engaged with the cam groove 23b of the cam drum 23, and the rammer 4a is guided while being guided by the rammer guide groove 2d. According to the groove shape of the groove 23b, it was moved back and forth between the ammunition holders 2b. However, the ramper mechanism 4 is a loading mechanism that is operated by a driving mechanism separate from the intermittent driving mechanism 5 to push the ammunition 7 into the predetermined chambers 10 ₁ to 10 ₄ before shooting. You can also.
[0026]
【The invention's effect】
As will be understood from the above description, according to the push-through drawing method for the rotating chamber type cannon according to the present invention, the following effects can be obtained.
(1) When pushing out the cartridge case from the chamber, an initial cartridge case cylinder operation that requires the greatest force is performed by an impact mechanism that is operated by the spring force of the spring. As a result, the force required for the subsequent extraction of the cartridge case is reduced. Therefore, when pushing in a new ammunition and pushing out the cartridge case, the force applied to the ammunition can be small, and the driving force of the rammer mechanism can be reduced. As a result, it is possible to satisfactorily achieve both the prevention of the problem that the newly loaded ammunition is deformed and the shooting becomes impossible and the strength of the cartridge is reduced to reduce the weight and size.
[0027]
(2) Since the extraction force of the cartridge case by the Ranma mechanism is small, the strength of the Ranma mechanism can be reduced. As a result, the lighter mechanism can be reduced in weight, and troubles such as wear and seizure can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a cannon according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along the line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is an operation explanatory view of the engaging portion and the striking portion of the weight member.
FIG. 6 is a cross-sectional view showing a machine gun that is also provided with a ramp mechanism, with a cam groove partially omitted.
7 is an enlarged cross-sectional view of the main part of FIG.
[Explanation of symbols]
1: gun barrel, 2: chamber drum, 3: gun mount, 4: rammer mechanism, 5: intermittent drive mechanism, 7: ammunition, 8: impact mechanism, 10 ₁ to 10 ₆ : chamber, 11: bullet, 12: cartridge case 12a: rear surface, 18: extraction cylinder auxiliary mechanism, 20: cam portion, 21: cam surface, 21a: inclined surface, 21b: step, 30: spring, 32: weight member, 32a: engagement portion, 32b: striking portion .

Claims

A chamber drum (2) is rotatably supported by a gun rack (3) having a gun barrel (1), and a plurality of chambers (10) are formed on the same circumference of the chamber drum (2) and rotate. Rotating chamber which shoots after loading ammunition (7) by the ramma mechanism (4) into the chamber (10) and pushes the cartridge case (12) remaining in the chamber (10) out of the chamber (10) A push-through method for a type cannon,
An inclined surface (21a) and a step (provided near the rear surface of the chamber (10) of the chamber drum (2) and gradually project backward between the adjacent chambers (10) in the rotation direction of the chamber drum (2). A cam part (20) having a cam surface (21) composed of 21b) and a gun rack (3) as a position of a chamber (10 ₆ ) where a cartridge case (12) after shooting is left before a new ammunition (7) is loaded. ) And is provided with a weight member (32) constantly biased forward by a spring (30), and the weight member (32) engages with the cam surface (21). And an impact mechanism (8) having a striking part (32b),
The weight member (32a) engages with the inclined surface (21a) of the cam surface (21) while the spring (30) is elastically compressed by the intermittent rotation of the chamber drum (2). 32) is gradually pushed backward, and when the striking portion (32b) is aligned with the chamber (10 ₆ ) where the shell (12) after shooting is left before the loading of new ammunition (7), the engaging portion (32a) is released along the step (21b) of the cam surface (21), and the cartridge (12) remaining in the chamber (10 ₆ ) after the hitting portion (32b) has fired the bullet (11) A push-through lottery method for a rotating chamber type cannon characterized by striking the rear surface (12a) and imparting movement to the cartridge case (12) in the barrel direction.

The cam surface (21) of the cam portion (20) having the inclined surface (21a) and the step (21b) is formed at all between the adjacent chambers (10), and the striking portion (32b) is the cartridge case (12). Due to the intermittent rotation of the chamber drum (2) after hitting the rear surface (12a), the weight member (32) is retracted back through the engaging portion (32a) engaged with the inclined surface (21a). The inclination angle of the inclined surface (21a) is set so that the striking part (32b) is retracted and returned beyond the side wall of the chamber (10 ₆ ). A push-through method for a rotating chamber cannon.