JP3782852B2

JP3782852B2 - Ammunition loading mechanism of rotating chamber type cannon

Info

Publication number: JP3782852B2
Application number: JP20275396A
Authority: JP
Inventors: 盛喜吉松
Original assignee: Japan Steel Works Ltd
Current assignee: Japan Steel Works Ltd
Priority date: 1996-07-15
Filing date: 1996-07-15
Publication date: 2006-06-07
Anticipated expiration: 2016-07-15
Also published as: JPH1030899A

Description

【０００１】
【産業上の利用分野】
本発明は、回転薬室型機関砲の弾薬装填機構に関するもので、特に弾薬の給弾、装填及び空薬莢の排出までを含んだ回転薬室型機関砲の弾薬装填機構に関するものである。
【０００２】
【従来の技術】
従来の回転薬室型機関砲の弾薬装填機構は、砲尾に備えられ、複数の薬室を同一円周上に等間隔で配置したドラムを有し、薬室と同一円周上に砲身が配置されている。そして、このドラムを間欠的に回転駆動することにより、各ステップ毎に弾薬の薬室への装入、閉鎖、弾丸の発射及び薬莢の排出を行つている。
【０００３】
通常、薬室は５個程度からなり、５ステップでドラムが１回転する。この場合、ドラムの１回転つまり５ステップで５発の弾丸を発射している。このとき、弾薬の薬室への装入は、２段階で行う。すなわち、１段階で弾薬の約１／２を装入し、２段階目で残りの１／２を装入する。このため、１段階で装入を完了するものに比べて装入速度を小さくできるといつた特徴を有している。
【０００４】
一方、ドラムの回転駆動力には、発射時のガスを利用することが一般的に行われているが、外部動力による方法もある。しかし、ドラムの駆動力として発射時のガスを利用する場合でも、最初の駆動には外部動力が必要である。
【０００５】
【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の弾薬装填機構にあつては、次のような技術的課題を有している。
すなわち、弾薬装填機構による弾薬の装入時の作動は、回転間欠運動及び往復間欠運動の２つから成つている。具体的には、ドラムを１ステップ回転させて停止させる回転間欠運動と、ドラムが停止している間に弾薬を薬室に２段階で装入及び弾丸を発射した後に残渣として残る薬莢を１段階で引き抜く往復間欠運動とから成つている。この往復間欠運動は、通常、ランマを往復運動させて行つているので、装填ランマが２個、引き抜きランマが１個必要である。更に、ドラムの回転間欠運動及び弾薬又は薬莢に与える往復間欠運動の両方を与える間欠機構を含み、この回転運動及び往復運動を適宜にコントロールする機構が必要となる。その結果、弾薬装填機構の構造が複雑になるという技術的課題がある。また、ランマの型式にもよるが、一般に弾薬装填機構ひいては砲身の長さを長くして対応させることになるため、機関砲が大形化せざるを得ない。
【０００６】
【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及び給弾機４を結合するフレーム２内に回転自在に支持され、給弾機４より送弾される弾薬８を給弾位置に保持する弾薬保持部３ｆ，３ｆ’、及び弾薬保持部３ｆ，３ｆ’に対応させて形成され、弾薬８を受け入れて砲身１に対応する装填位置を採らせる薬室３ｇ，３ｇ’を有する薬室ドラム３と、薬室ドラム３を前記給弾位置から装填位置及び装填位置から給弾位置へと間欠的に回転させる間欠機構５と、間欠機構５を介して薬室ドラム３を回転駆動する回転駆動手段（６）と、薬室ドラム３の回転に伴い、弾薬保持部３ｆ，３ｆ’に保持された弾薬８を薬室３ｇに送弾する装填手段（１０）と、薬室３ｇに装填された弾薬８を閉鎖する閉鎖保持手段（１２）と、閉鎖保持手段（１２）によつて閉鎖された弾薬８を撃発する発火機構７と、薬室ドラム３の回転に伴い、撃発された後に薬室３ｇに残る空薬莢を引き抜いてフレーム２の薬莢排出孔１３にまで搬送する薬莢排出手段（１１）とを備え、
前記装填手段（１０）が、フレーム２の内面に円周方向に延在させて、弾薬保持部３ｆ，３ｆ’に保持されて給弾位置を採る弾薬８の尾端面から、薬室ドラム３の回転方向に連続して形成され、薬室ドラム３の回転に伴い、給弾された弾薬保持部３ｆ，３ｆ’に対応する薬室３ｇ，３ｇ’に向けて弾薬８を押し込むカム面を有する装填カム１０によつて構成され、
前記閉鎖保持手段（１２）が、装填カム１０の先端に接続させて設けられ、装填位置を採る弾薬８の尾端面を支持するロック部１２によつて構成され、
前記薬莢排出手段（１１）が、フレーム２の内面に円周方向に延在させて、薬室３ｇ，３ｇ’に装填されて装填位置を採る弾薬８の引き抜き溝９と係合する位置から、薬室ドラム３の回転方向に連続して薬莢排出孔１３にまで形成され、薬室ドラム３の回転に伴い、装填位置を採る空薬莢を引き抜いて薬莢排出孔１３にまで搬送するカム面を有する引き抜きカム１１によつて構成されていることを特徴とする回転薬室型機関砲の弾薬装填機構である。
請求項２の発明は、弾薬保持部３ｆ，３ｆ’及び薬室３ｇ，３ｇ’が、薬室ドラム３の回転中心軸線に対する直径方向にそれぞれ形成されると共に、間欠機構５が、回転駆動手段（６）の連続回転により、第１時間ｔ₁で給弾位置を採る薬室ドラム３を１８０°回転させて装填位置を採らせた後、第２時間ｔ₂の間は薬室ドラム３を装填位置で停止させ、第２時間ｔ₂の経過の後、再び第１時間ｔ₁で薬室ドラム３を１８０°回転させて第２時間ｔ₂の間は薬室ドラム３を停止させるサイクルを繰り返す構成を有することを特徴とする請求項１の回転薬室型機関砲の弾薬装填機構である。
【０００７】
【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、本発明に係る回転薬室型機関砲の弾薬装填機構の１実施の形態を示す。図中において符号２は弾薬装填機構のフレームを示し、フレーム２は、円筒状をなしている。このフレーム２の中心軸線方向の前端の一側に偏らせてボス部２ａが形成され、このボス部２ａに砲身１の基端部が結合され、フレーム２の後端他側面には、給弾機４が接続され、また、フレーム２の内部に薬室ドラム３が回転自在に支持されている。
【０００８】
薬室ドラム３は、平板状をなし、前側の薬室部３ｄと後側の送弾部３ｅとが軸部３ｃを介して同軸に形成され、前後の支軸３ａ，３ｂによつてフレーム２の中心軸線の回りに回転自在に支持されている。この薬室部３ｄの左右両側部には、それぞれ円形孔からなる薬室３ｇ，３ｇ’が形成され、送弾部３ｅの左右両側部には、それぞれ円筒面の一部からなる弾薬保持部３ｆ，３ｆ’が形成され、左右の薬室３ｇ，３ｇ’及び弾薬保持部３ｆ，３ｆ’は、それぞれ同一軸線上に対向配置されて対をなしている。また、後側の支軸３ａが、間欠機構５を介して回転駆動源であるモータ６に接続している。
【０００９】
給弾機４は、内部に弾薬８（８ｃ，８ｄ，８ｅ，８ｇ）が複数個収納され、平板状の薬室ドラム３が水平な給弾位置を採る図２に示す状態で、その開口４ａがいずれか一方の弾薬保持部３ｆ，３ｆ’に整合して給弾可能となる位置に配置されている。しかして、薬室ドラム３が水平な給弾位置を採る間（後記するように薬室ドラム３が停止している間）に、図外の送り込み手段により、給弾機４内の１個の弾薬８が薬室ドラム３の弾薬保持部３ｆ，３ｆ’のいずれか一方に送り込まれる。また、給弾機４の開口４ａの下方位置のフレーム２には、薬莢をフレーム２の外部へ排出させる薬莢排出孔１３が貫通して形成されている。薬莢排出孔１３は、弾薬８の弾丸が発射後に残る薬莢が通過可能な大きさに形成されている。なお、薬莢排出孔１３は、フレーム２の薬室部３ｄよりも後方であつて、水平な給弾位置を採る薬室ドラム３の下方に形成されていればよい。更に、フレーム２の薬莢排出孔１３の回転方向の前側縁部には、薬莢を係止させて薬莢排出孔１３に向けて案内させる排出爪１４，１４’が、図１，図２に示すように突設されている。勿論、排出爪１４，１４’は、薬室ドラム３と干渉しない位置に形成してある。
【００１０】
薬室ドラム３が水平な給弾位置を採つた状態では、図１上で左方に位置する他側の薬室３ｇ’及び弾薬保持部３ｆ’の中心軸線は、砲身１の中心軸線と合致しており、また、右方に位置する一側の弾薬保持部３ｆの中心軸線は、前述したように給弾機４の開口部４ａと整合する位置、つまり給弾機４内の弾薬８を給弾可能な位置となつている。この弾薬保持部３ｆ，３ｆ’は、弾薬８又は空薬莢を保持可能な形状に形成され、薬室３ｇ，３ｇ’は弾薬８を挿入可能な大きさを有している。
【００１１】
間欠機構５は、ゼネバ機構、欠歯機構等によつて構成され、薬室ドラム３に図４に示す駆動、つまり薬室ドラム３に給弾位置から装填位置及び装填位置から給弾位置への間欠的な回転を与える。すなわち、モータ６の連続回転により、水平姿勢を採つて停止状態にある薬室ドラム３が、所定の第１時間ｔ₁の間に反時計回り方向に１８０°だけ回転し、その後の第２時間ｔ₂の間は停止する。この両時間ｔ₁＋ｔ₂が薬室ドラム３の１動作時間であり、この動作を２回繰り返すことにより、薬室ドラム３は１回転し、水平な停止状態に戻る。このようにして、薬室ドラム３が次々に間欠回転する。
【００１２】
フレーム２の内面には、図５に示すように薬室ドラム３の回転を支障しない位置として、装填手段である装填カム１０、薬莢排出手段である引き抜きカム１１及び閉鎖保持手段であるロック部１２が、それぞれ形成されている。図５は、フレーム２の内側３６０°を平面に展開して示している。
【００１３】
装填カム１０は、水平姿勢を採つて停止状態にある薬室ドラム３の一側の薬室３ｇ、つまり給弾機４の開口部４ａと対応する薬室３ｇの後方から薬室ドラム３の回転方向（反時計回り方向）に約１８０°の範囲で形成され、次第に前方に向けて湾曲する連続したカム面を有している。
【００１４】
また、ロック部１２は、装填カム１０の先端に接続させて形成されている。すなわち、ロック部１２は、水平姿勢を採つて停止状態にある薬室ドラム３の他側の薬室３ｇ’、つまり砲身１と対応する薬室３ｇ’の後方に形成されている。装填カム１０のカム面及びロック部１２の前面は、弾薬８（８ａ，８ｂ）の尾端面に当接して支持する。このロック部１２には、図１に示すように発火機構７が装着されている。
【００１５】
引き抜きカム１１は、水平姿勢を採つて停止状態にある薬室ドラム３の他側の薬室３ｇ’、つまり砲身１と対応する薬室３ｇ’の後方から始まり、薬室ドラム３の回転方向（反時計回り方向）に１８０°よりも小さなθ₃°の範囲で形成され、次第に後方に向けて湾曲する連続したカム面を有している。引き抜きカム１１の先端は、図２に仮想線で示すように薬莢排出孔１３の回転方向の後側縁部に接続している。引き抜きカム１１の基端部は、他側の薬室３ｇ’に装填されている弾薬８ｂの引き抜き溝９と係合する位置に形成され、また、引き抜きカム１１の全体は、弾薬８の引き抜き溝９と係合可能な厚さを有している。
【００１６】
しかして、給弾機４から供給された弾薬８ａが一側の弾薬保持部３ｆに保持されて給弾位置を採れば、この弾薬８ａの尾端面が装填カム１０のカム面の基端部によつて支持される。そして、薬室ドラム３の回転に伴い、装填カム１０のカム面によつて弾薬８ａの尾端面が押され、弾薬８ａが次第に前方に位置する一側の薬室３ｇに押し込まれ、弾薬８ｂとして示す装填位置にまで移送される。装填位置にまで移送された弾薬８ｂは、その尾端面がロック部１２に当接した状態で支持される。一方、他側の薬室３ｇ’に装填されて装填位置を採る弾薬８ｂは、その引き抜き溝９が引き抜きカム１１のカム面の基端部に係合しているで、弾丸（図５に弾丸８’として示す）が発射されて空薬莢となつた後、薬室ドラム３の回転に伴い、次第に後方に引き抜かれ、薬室ドラム３がθ₃°だけ回転したときに、他側の薬室３ｇ’と干渉しない位置にまで引き抜かれ、薬莢排出孔１３にまで移動する。従つて、図２に示す薬莢排出孔１３は、砲身１と対応する薬室３ｇ’の後方を基準として、薬室ドラム３の回転方向（反時計回り方向）にθ₃°だけ回転した位置に形成されている。
【００１７】
次に作用について説明する。
先ず、モータ６をＯＮ作動させれば、間欠機構５の機能により、薬室ドラム３が図２に示す水平な給弾位置を採つて停止する。この状態で、給弾機４からの弾薬８ａが薬室ドラム３に送り込まれ、一側の弾薬保持部３ｆに保持される。薬室ドラム３の停止は、第２時間ｔ₂の間だけ行われる。
【００１８】
続いて、間欠機構５の機能によつて薬室ドラム３が第１時間ｔ₁だけ、つまり１８０°だけ反時計回り方向に回転して停止する。この薬室ドラム３の回転の間に、弾薬８ａは弾薬保持部３ｆに保持されながら、図５に示す装填カム１０のカム面に沿つて押されて、一側の弾薬保持部３ｆの前方に位置する一側の薬室３ｇに押し込まれ、薬室ドラム３が装填位置を採つて、図１，図３に示すように他側の薬室３ｇ’に装填された弾薬８ｂの状態になる。この薬室ドラム３が１８０°だけ回転した後の停止は、第２時間ｔ₂である。薬室ドラム３が装填位置を採ることにより、弾薬８ｂの尾部が装填カム１０の先端に接続するロック部１２に支えられた状態となる。この状態で発火機構７の作用によつて弾薬８ｂが撃発されて弾丸が発射され、弾丸の発射反動がロック部１２によつて支持される。弾丸の発射により、他側の薬室３ｇ’に空薬莢が残渣として残る。一方、この停止の第２時間ｔ₂の間に、給弾機４内の次の弾薬８ｃが送弾部３ｅの一側の弾薬保持部３ｆに送り込まれる。
【００１９】
次に、薬室ドラム３が１８０°だけ反時計回り方向に回転する間に、他側の薬室３ｇ’に残つている薬莢が、引き抜きカム１１によつて薬室３ｇ’から引き抜かれながら、回転する薬室ドラム３によつて搬送され、薬室ドラム３がθ₃°だけ回転したときに薬莢と引き抜きカム１１との係合が離脱すると同時に、薬莢が排出爪１４，１４’に係合して案内され、薬莢排出孔１３から外部に排出される。すなわち、薬室３ｇ’から引き抜かれた薬莢は、他側の弾薬保持部３ｆ’に保持された状態にあるため、薬莢排出孔１３に至つた薬莢は、弾薬保持部３ｆ’と排出爪１４，１４’との間に挟まれ、かつ、重力を受けながらフレーム２の下部に形成した薬莢排出孔１３から自然落下する。薬莢が薬莢排出孔１３から排出された後も薬室ドラム３の回転が続き、上記１８０°だけ回転する。この薬室ドラム３の１８０°の回転により、一側の弾薬保持部３ｆに給弾された弾薬８ｃは、前述したと同様に他側の薬室３ｇ’に装填される。この薬室ドラム３の１８０°の回転が終了すれば、薬莢が排出された薬室３ｇ’は図１，図２に示す一側の薬室３ｇの位置に戻り、給弾機４内の次の弾薬８ｄを受け取れる状態になる。
【００２０】
このようにして、薬室ドラム３が２動作、つまり薬室ドラム３が１回転する間に、弾薬８の弾薬保持部３ｆから薬室３ｇへの装入、薬莢の薬室３ｇ’からの引き抜き及び薬莢排出孔１３から外部への放出が次々に行われる。また、薬室ドラム３の停止の間に、弾丸の発射及び給弾（給弾機４から機関砲への弾薬８の受け渡し）が同時に行われる。このため、弾薬８の薬室３ｇへの装入及び薬莢の薬室３ｇ’からの引き抜きが、装填カム１０及び引き抜きカム１１によつてなされることとも相まつて、第１時間ｔ₁と第２時間ｔ₂との和で与えられる１動作の時間を縮めても無理が生じ難く、高発射速度の達成が可能である。なお、発射速度は、目標によつて使い分けるものであり、例えば対空用であれば、高発射速度が要求され、反対に対地用では、どちらかといえば低発射速度となる。この場合の発射速度の高低切換えは、モータ６の回転速度の変更によつて対応が可能である。
【００２１】
ところで、上記の１実施の形態にあつては、それぞれ２個の薬室３ｇ，３ｇ’及び弾薬保持部３ｆ，３ｆ’を、薬室ドラム３の回転中心軸線に対する直径方向に形成したが、薬室３ｇ，３ｇ’及び弾薬保持部３ｆ，３ｆ’は、それぞれ１個又は任意の複数個を形成し、同様の作用を得ることも可能である。
【００２２】
【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弾薬装填機構によれば、下記の効果を奏することができる。
すなわち、間欠機構は回転方向のみとなるので、従来の往復運動を与える間欠機構が不必要になる。その結果、構造が簡単な弾薬装填機構が得られた。加えて、装填ランマ及び引き抜きランマのいずれも省略されるので、これらの駆動装置及びコントロール機構が不要となることとも相まつて、より簡素な構造が得られ、弾薬装填機構の小形化が図れる。
【図面の簡単な説明】
【図１】本発明の１実施の形態に係る回転薬室型機関砲の弾薬装填機構を示す断面図。
【図２】図１のＩＩ−ＩＩ線断面図。
【図３】図１のＩＩＩ−ＩＩＩ線断面図。
【図４】同じく時間−薬室ドラムの回転角度特性を示す線図。
【図５】同じくフレームの内側３６０°を示す展開図。
【符号の説明】
１：砲身、２：フレーム、３：薬室ドラム、３ｆ，３ｆ’：弾薬保持部、３ｇ，３ｇ’：薬室、４：給弾機、５：間欠機構、６：モータ（回転駆動手段）、７：発火機構、８：弾薬、１０：装填カム（装填手段）、１１：引き抜きカム（薬莢排出手段）、１２：ロック部（閉鎖保持手段）、１３：薬莢排出孔、ｔ₁：第１時間、ｔ₂：第２時間。[0001]
[Industrial application fields]
The present invention relates to an ammunition loading mechanism of a rotating chamber type cannon, and more particularly to an ammunition loading mechanism of a rotating chamber type cannon including the supply and loading of ammunition and the discharge of empty cartridges.
[0002]
[Prior art]
The conventional ammunition loading mechanism of a rotating chamber type cannon has a drum with a plurality of chambers arranged at equal intervals on the same circumference, and a gun barrel on the same circumference as the chamber. Has been placed. The drum is driven to rotate intermittently, so that the ammunition is loaded into the chamber, closed, the bullet is fired, and the cartridge is discharged at each step.
[0003]
Usually, there are about 5 chambers, and the drum rotates once in 5 steps. In this case, five bullets are fired in one rotation of the drum, that is, in 5 steps. At this time, charging the ammunition into the chamber is performed in two stages. That is, about half of the ammunition is charged in the first stage, and the remaining half is charged in the second stage. For this reason, it has a feature that the charging speed can be reduced as compared with the case where the charging is completed in one stage.
[0004]
On the other hand, a gas at the time of launch is generally used for the rotational driving force of the drum, but there is also a method using external power. However, even when the gas at the time of launch is used as the driving force of the drum, external power is required for the first driving.
[0005]
[Problems to be solved by the invention]
However, the conventional ammunition loading mechanism of the conventional rotating chamber type cannon has the following technical problems.
That is, the operation at the time of loading of ammunition by the ammunition loading mechanism is composed of two operations of intermittent rotation and reciprocal intermittent motion. Specifically, the rotary intermittent motion that stops the drum by rotating it one step, and the cartridge shell that remains as a residue after loading the bullet into the chamber and firing the bullet in two steps while the drum is stopped It consists of a reciprocating intermittent motion that is pulled out by Since this reciprocating intermittent movement is usually performed by reciprocating the rammers, two loading rammers and one pulling rammer are required. Furthermore, an intermittent mechanism that provides both the intermittent rotation motion of the drum and the reciprocal intermittent motion applied to the ammunition or cartridge case is required, and a mechanism for appropriately controlling the rotational motion and the reciprocating motion is required. As a result, there is a technical problem that the structure of the ammunition loading mechanism becomes complicated. In addition, although depending on the type of Ranma, the ammunition loading mechanism and thus the length of the gun barrel is generally increased, so that the cannon must be enlarged.
[0006]
[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.
The invention of claim 1 is an ammunition holder 3f, which is rotatably supported in a frame 2 connecting the barrel 1 and the bullet feeder 4, and holds the ammunition 8 fed from the bullet feeder 4 at the bullet feed position. A chamber chamber drum 3 having chamber chambers 3g and 3g ′ formed to correspond to 3f ′ and the ammunition holding portions 3f and 3f ′ and receiving the ammunition 8 and adopting a loading position corresponding to the gun barrel 1; An intermittent mechanism 5 that intermittently rotates 3 from the bullet feeding position to the loading position and from the loading position to the bullet feeding position, and a rotation driving means (6) that rotationally drives the chamber drum 3 via the intermittent mechanism 5; With the rotation of the chamber drum 3, the loading means (10) for sending the ammunition 8 held in the ammunition holding portions 3f and 3f ′ to the chamber 3g and the closing for closing the ammunition 8 loaded in the chamber 3g The holding means (12) and the ammunition 8 closed by the closing holding means (12) are fired. An ignition mechanism 7 that performs, and a cartridge case discharge means (11) that pulls out an empty case remaining in the chamber 3g after being fired and conveys it to the case discharge hole 13 of the frame 2 as the chamber drum 3 rotates,
The loading means (10) extends in the circumferential direction on the inner surface of the frame 2 and from the tail end surface of the ammunition 8 held by the ammunition holding portions 3f and 3f ′ to take the bullet feeding position. Loading having a cam surface that is formed continuously in the rotation direction and that pushes the ammunition 8 toward the chambers 3g and 3g ′ corresponding to the ammunition holders 3f and 3f ′ fed as the chamber drum 3 rotates. Constituted by a cam 10,
The closing holding means (12) is provided by being connected to the tip of the loading cam 10, and is constituted by a lock portion 12 that supports the tail end surface of the ammunition 8 taking the loading position,
From the position where the cartridge discharge means (11) extends in the circumferential direction on the inner surface of the frame 2 and engages with the extraction groove 9 of the ammunition 8 loaded in the drug chambers 3g and 3g ′ and taking the loading position, A cam surface is formed continuously in the rotation direction of the chamber drum 3 up to the cartridge case discharge hole 13, and with the rotation of the chamber chamber drum 3, the empty cartridge case taking the loading position is pulled out and conveyed to the case discharge hole 13. An ammunition loading mechanism of a rotating chamber type cannon characterized by being constituted by an extraction cam 11.
According to the invention of claim 2, the ammunition holding portions 3f and 3f ′ and the drug chambers 3g and 3g ′ are respectively formed in the diameter direction with respect to the rotation center axis of the drug chamber drum 3, and the intermittent mechanism 5 is a rotation drive means ( 6) After rotating the medicine chamber drum 3 which takes the bullet feed position at the first time t ₁ by 180 ° and adopting the loading position by the continuous rotation of 6), the medicine chamber drum 3 is loaded for the second time t _2. is stopped at the position after the elapse of the second time t _2, during the second time t ₂ and the drug chamber drum 3 in the first hour t ₁ is rotated 180 ° again repeat the cycle to stop the medication chamber drum 3 The ammunition loading mechanism of the rotary chamber type cannon according to claim 1, characterized in that it has a configuration.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of an ammunition loading mechanism of a rotary chamber type cannon according to the present invention. In the figure, reference numeral 2 denotes a frame of the ammunition loading mechanism, and the frame 2 has a cylindrical shape. A boss portion 2a is formed by being biased to one side of the front end in the central axis direction of the frame 2, and the base end portion of the gun barrel 1 is coupled to the boss portion 2a. The machine 4 is connected, and the chamber drum 3 is rotatably supported inside the frame 2.
[0008]
The chamber drum 3 has a flat plate shape, and a front chamber portion 3d and a rear bullet feeding portion 3e are formed coaxially via a shaft portion 3c, and the frame 2 is formed by front and rear support shafts 3a and 3b. Is supported so as to be rotatable about the central axis of the shaft. The chambers 3g and 3g 'each formed of a circular hole are formed on the left and right sides of the chamber 3d, and the ammunition holders 3f each formed of a part of a cylindrical surface are formed on the left and right sides of the bullet feeding unit 3e. , 3f ′, and the left and right chambers 3g, 3g ′ and the ammunition holders 3f, 3f ′ are paired so as to face each other on the same axis. Further, the rear support shaft 3 a is connected to a motor 6 that is a rotational drive source via an intermittent mechanism 5.
[0009]
The ammunition machine 4 has a plurality of ammunitions 8 (8c, 8d, 8e, 8g) stored therein, and the opening 4a in the state shown in FIG. Is arranged at a position where it can be fed in alignment with either one of the ammunition holders 3f, 3f ′. Thus, while the chamber chamber drum 3 takes a horizontal feed position (while the chamber chamber drum 3 is stopped as will be described later), one of the inside of the feeder 4 is fed by an unillustrated feeding means. The ammunition 8 is fed into one of the ammunition holding portions 3f and 3f ′ of the chamber drum 3. Further, a cartridge case discharge hole 13 through which the cartridge case is discharged to the outside of the frame 2 is formed through the frame 2 at a position below the opening 4 a of the bullet feeder 4. The cartridge case discharge hole 13 is formed in a size that allows the cartridge case remaining after the bullet of the ammunition 8 is fired to pass through. The cartridge discharge hole 13 only needs to be formed behind the chamber 3d of the frame 2 and below the chamber drum 3 that takes a horizontal bullet feed position. Further, on the front edge of the frame 2 in the rotational direction of the case discharge hole 13, there are discharge claws 14, 14 ′ that lock the guide case and guide it toward the case discharge hole 13 as shown in FIGS. 1 and 2. Projected to Of course, the discharge claws 14, 14 ′ are formed at positions that do not interfere with the chamber drum 3.
[0010]
In a state where the chamber chamber drum 3 has a horizontal bullet feed position, the center axis of the other chamber chamber 3g ′ and the ammunition holder 3f ′ located on the left side in FIG. In addition, the central axis of the ammunition holding part 3f on one side located on the right side is aligned with the opening 4a of the ammunition machine 4 as described above, that is, the ammunition 8 in the ammunition machine 4 is aligned. It is in a position where it can be fed. The ammunition holding portions 3f and 3f ′ are formed in a shape capable of holding the ammunition 8 or the empty cartridge case, and the chambers 3g and 3g ′ have a size in which the ammunition 8 can be inserted.
[0011]
The intermittent mechanism 5 is configured by a Geneva mechanism, a toothless mechanism, or the like, and the medicine chamber drum 3 is driven as shown in FIG. 4, that is, the medicine chamber drum 3 is moved from the loading position to the loading position and from the loading position to the feeding position. Give intermittent rotation. That is, by continuous rotation of the motor 6, the drug chamber drum 3 in the connexion stopped adopted a horizontal posture, rotated by 180 ° in the counterclockwise direction during a predetermined first time t _1, the second time later between t ₂ is stopped. Both times t ₁ + t ₂ are one operation time of the chamber drum 3, and by repeating this operation twice, the chamber drum 3 rotates once and returns to a horizontal stop state. In this way, the medicine chamber drum 3 rotates intermittently one after another.
[0012]
On the inner surface of the frame 2, as shown in FIG. 5, as a position that does not hinder the rotation of the medicine chamber drum 3, a loading cam 10 that is a loading means, a pulling cam 11 that is a cartridge discharge means, and a lock portion 12 that is a closing holding means. Are formed. FIG. 5 shows the inner side 360 ° of the frame 2 expanded on a plane.
[0013]
The loading cam 10 rotates the chamber drum 3 from the rear of the chamber 3g on the side of the chamber drum 3 in the stopped state in a horizontal position, that is, the chamber 3g corresponding to the opening 4a of the ammunition machine 4. It has a continuous cam surface which is formed in a range of about 180 ° in the direction (counterclockwise direction) and gradually curves forward.
[0014]
The lock portion 12 is formed to be connected to the tip of the loading cam 10. That is, the lock portion 12 is formed behind the chamber 3g ′ on the other side of the chamber drum 3 in a stopped state in a horizontal posture, that is, behind the chamber 3g ′ corresponding to the gun barrel 1. The cam surface of the loading cam 10 and the front surface of the lock portion 12 are in contact with and supported by the tail end surface of the ammunition 8 (8a, 8b). As shown in FIG. 1, an ignition mechanism 7 is attached to the lock portion 12.
[0015]
The extraction cam 11 starts from the rear side of the chamber 3g ′ on the other side of the chamber drum 3 in a stopped state in a horizontal position, that is, from the rear of the chamber 3g ′ corresponding to the gun barrel 1, and the rotation direction of the chamber drum 3 ( It has a continuous cam surface which is formed in the range of θ ₃ ° smaller than 180 ° (counterclockwise direction) and gradually curves backward. The leading end of the pull-out cam 11 is connected to the rear edge of the cartridge case discharge hole 13 in the rotational direction as indicated by a virtual line in FIG. The base end portion of the extraction cam 11 is formed at a position where it engages with the extraction groove 9 of the ammunition 8b loaded in the other side chamber 3g ', and the entire extraction cam 11 is formed in the extraction groove of the ammunition 8. 9 has a thickness that can be engaged with 9.
[0016]
Thus, when the ammunition 8a supplied from the ammunition machine 4 is held by the ammunition holding part 3f on one side and takes the bullet feeding position, the tail end surface of the ammunition 8a is at the base end of the cam surface of the loading cam 10. Therefore supported. Then, as the chamber drum 3 rotates, the tail end surface of the ammunition 8a is pushed by the cam surface of the loading cam 10, and the ammunition 8a is gradually pushed into the chamber 3g on the one side located forward, as ammunition 8b. It is transferred to the loading position shown. The ammunition 8b transferred to the loading position is supported in a state in which its tail end surface is in contact with the lock portion 12. On the other hand, the ammunition 8b loaded in the other side chamber 3g ′ and taking the loading position has a pull-out groove 9 engaged with the proximal end portion of the cam surface of the pull-out cam 11. 8 ′) is fired to become an empty cartridge case, and is gradually withdrawn rearward as the chamber drum 3 rotates, and when the chamber chamber drum 3 rotates by θ ₃ °, the other chamber chamber It is pulled out to a position where it does not interfere with 3g ′ and moves to the cartridge case discharge hole 13. Accordingly, the cartridge case discharge hole 13 shown in FIG. 2 is at a position rotated by θ ₃ ° in the rotation direction (counterclockwise direction) of the chamber drum 3 with reference to the rear of the chamber 3g ′ corresponding to the barrel 1. Is formed.
[0017]
Next, the operation will be described.
First, if the motor 6 is turned ON, the chamber drum 3 stops by taking the horizontal bullet feed position shown in FIG. In this state, the ammunition 8a from the ammunition machine 4 is fed into the chamber drum 3 and held in the one side ammunition holding part 3f. Stop for the chamber drum 3 is carried out only during the second time t _2.
[0018]
Subsequently, due to the function of the intermittent mechanism 5, the chamber drum 3 rotates counterclockwise only for the first time t ₁ , that is, 180 ° and stops. During the rotation of the chamber drum 3, the ammunition 8 a is pushed along the cam surface of the loading cam 10 shown in FIG. 5 while being held by the ammunition holding portion 3 f, and in front of the one side ammunition holding portion 3 f. The medicine chamber 3g is pushed into the one-side medicine chamber 3g, and the medicine chamber drum 3 takes the loading position to be in the state of the ammunition 8b loaded in the other medicine chamber 3g 'as shown in FIGS. The stop after the chamber drum 3 is rotated by 180 ° is the second time t ₂ . By taking the loading position of the chamber drum 3, the tail portion of the ammunition 8b is supported by the lock portion 12 connected to the tip of the loading cam 10. In this state, the ammunition 8 b is fired by the action of the firing mechanism 7 and the bullet is fired, and the firing reaction of the bullet is supported by the lock portion 12. Due to the firing of the bullet, an empty shell remains as a residue in the other chamber 3g ′. On the other hand, during the second time t ₂ of this stop, the next ammunition 8c in the ammunition machine 4 is fed into the ammunition holding part 3f on one side of the bullet feeding part 3e.
[0019]
Next, while the chamber drum 3 rotates counterclockwise by 180 °, the shell remaining in the other chamber 3g ′ is pulled out from the chamber 3g ′ by the extraction cam 11, When the chamber drum 3 is transported by the rotating chamber chamber drum 3 and the chamber chamber drum 3 is rotated by θ ₃ °, the cartridge chamber is disengaged from the extraction cam 11 and at the same time, the chamber chamber is engaged with the discharge claws 14, 14 ′. And is discharged to the outside through the cartridge discharge hole 13. That is, since the cartridge case pulled out from the chamber 3g ′ is held in the other side ammunition holding portion 3f ′, the cartridge case that reaches the cartridge case discharge hole 13 has the ammunition holding portion 3f ′ and the discharge claws 14, 14 ', and naturally falls from the cartridge case discharge hole 13 formed in the lower part of the frame 2 while receiving gravity. Even after the cartridge case is discharged from the case discharge hole 13, the rotation of the chamber drum 3 continues and rotates by 180 °. By this 180 ° rotation of the chamber drum 3, the ammunition 8c fed to the ammunition holding portion 3f on one side is loaded into the other chamber 3g ′ as described above. When the rotation of the chamber drum 3 by 180 ° is completed, the chamber 3g ′ from which the cartridge has been discharged returns to the position of the chamber 3g on one side shown in FIGS. Ready to receive the ammo 8d.
[0020]
Thus, while the chamber chamber drum 3 is operated twice, that is, while the chamber chamber drum 3 rotates once, the ammunition 8 is loaded from the ammunition holder 3f into the chamber chamber 3g, and the cartridge case is pulled out from the chamber chamber 3g '. And the discharge | release to the exterior from the cartridge case discharge hole 13 is performed one after another. Moreover, while the chamber drum 3 is stopped, bullets are fired and bullets are delivered (ammunition 8 is delivered from the bullet feeder 4 to the machine gun). For this reason, the loading of the ammunition 8 into the chamber 3g and the extraction of the cartridge case from the chamber 3g ′ are performed by the loading cam 10 and the extraction cam 11, and the first time t ₁ and the second time Even if the time of one operation given by the sum of the time t ₂ is shortened, it is difficult to cause unreasonableness, and a high firing speed can be achieved. Note that the firing speed is selected depending on the target. For example, a high launch speed is required for anti-air use, whereas a low launch speed is required for ground use. In this case, the switching of the firing speed can be handled by changing the rotational speed of the motor 6.
[0021]
By the way, in the above-described one embodiment, the two chambers 3g and 3g ′ and the ammunition holding portions 3f and 3f ′ are formed in the diameter direction with respect to the rotation center axis of the chamber drum 3, respectively. The chambers 3g, 3g ′ and the ammunition holders 3f, 3f ′ may each be one or any plurality, and the same action can be obtained.
[0022]
【The invention's effect】
As will be understood from the above description, the ammunition loading mechanism of the rotating chamber type cannon according to the present invention has the following effects.
That is, since the intermittent mechanism is only in the rotational direction, the conventional intermittent mechanism that provides the reciprocating motion becomes unnecessary. As a result, an ammunition loading mechanism with a simple structure was obtained. In addition, since both the loading runner and the pulling runner are omitted, a simpler structure can be obtained and the size of the ammunition loading mechanism can be reduced due to the fact that these driving device and control mechanism become unnecessary.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an ammunition loading mechanism of a rotary chamber type cannon according to an embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is a sectional view taken along line III-III in FIG.
FIG. 4 is also a diagram showing a time-rotation angle characteristic of the chamber drum.
FIG. 5 is a development view showing the inner 360 ° of the frame.
[Explanation of symbols]
1: gun barrel, 2: frame, 3: chamber drum, 3f, 3f ′: ammunition holder, 3g, 3g ′: chamber, 4: ammunition machine, 5: intermittent mechanism, 6: motor (rotation drive means) , 7: ignition mechanism, 8: ammunition, 10: loading cam (loading means), 11: extraction cam (chamber discharge means), 12: lock portion (closed holding means), 13: cartridge discharge hole, t ₁ : first Time, t ₂ : Second time.

Claims

An ammunition holder that is rotatably supported in a frame (2) that connects the gun barrel (1) and the ammunition machine (4), and that retains the ammunition (8) delivered from the ammunition machine (4) at the ammunition position. The chamber (3g, 3f ′) formed to correspond to the portion (3f, 3f ′) and the ammunition holding portion (3f, 3f ′), which receives the ammunition (8) and takes the loading position corresponding to the gun barrel (1). A chamber chamber drum (3) having a '), an intermittent mechanism (5) for intermittently rotating the chamber chamber drum (3) from the bullet feeding position to the loading position and from the loading position to the bullet feeding position; 5) through the rotational drive means (6) for rotationally driving the chamber drum (3), and the ammunition (8) held in the ammunition holder (3f, 3f ′) as the chamber drum (3) rotates. ) To the chamber (3g), and the holding means for closing the ammunition (8) loaded in the chamber (3g) Means (12), an ignition mechanism (7) for firing the ammunition (8) closed by the closing holding means (12), and a chamber (after the firing with the rotation of the chamber drum (3)) 3) and a cartridge case discharging means (11) for pulling out the empty cartridge case remaining in the frame (2) and transporting it to the cartridge case discharge hole (13) of the frame (2),
From the tail end surface of the ammunition (8), the loading means (10) extends in the circumferential direction on the inner surface of the frame (2) and is held by the ammunition holding part (3f, 3f ′) to take the bullet feeding position. The chambers (3g, 3g) formed continuously in the rotation direction of the chamber drum (3) and corresponding to the ammunition holders (3f, 3f ′) fed with the rotation of the chamber drum (3) ') Constituted by a loading cam (10) having a cam surface for pushing the ammunition (8) towards
The closure holding means (12) is provided by being connected to the tip of the loading cam (10), and is constituted by a lock portion (12) that supports the tail end surface of the ammunition (8) taking the loading position,
The cartridge discharge means (11) extends in the circumferential direction on the inner surface of the frame (2) and is loaded into the chamber (3g, 3g ′) to take out the loading slot (9) of the ammunition (8). ) To the cartridge case discharge hole (13) continuously in the rotation direction of the chamber drum (3), and with the rotation of the chamber chamber drum (3) An ammunition loading mechanism of a rotary chamber type cannon characterized by being constituted by a withdrawal cam (11) having a cam surface that is pulled out and conveyed to a cartridge case discharge hole (13).

The ammunition holding part (3f, 3f ′) and the chamber (3g, 3g ′) are formed in the diameter direction with respect to the rotation center axis of the chamber drum (3), and the intermittent mechanism (5) is a rotation driving means. During the second time (t ₂ ), the chamber drum (3) that takes the bullet feed position at the first time (t ₁ ) is rotated 180 ° by the continuous rotation of (6) and the loading position is taken. Stops the chamber drum (3) at the loading position, and after the elapse of the second time (t ₂ ), the chamber chamber drum (3) is rotated 180 ° again for the first time (t ₁ ) for the second time. The ammunition loading mechanism of the rotary chamber type cannon according to claim 1, wherein a cycle for stopping the chamber drum (3) is repeated during (t ₂ ).