【０００１】
【産業上の利用分野】
本発明は、コンバインの穀物排出装置に係るものである。
【０００２】
【従来技術】
従来公知の、特開昭６３−２７９７１９号公報には、走行装置の前方に設けた刈取部と、前記走行装置の上方位置に設けた脱穀装置と、該脱穀装置の側部に設けたグレンタンクと、該グレンタンク内の穀粒を揚殻する揚穀機構と、該揚穀機構の上部に基部を取付けた固定筒と該固定筒に対して伸縮自在に重合させた移動筒からなる排出オーガを有するコンバインにおいて、前記固定筒内には中空の中空軸の外周面に固定した固定螺旋翼を設け、前記移動筒内には前記中空軸内を螺合することで出入り自在であって中空軸と一体回転する回転摺動軸と、該回転摺動軸の先端を固定し基部側を自由端にしたリボンコンベアとにより構成する伸縮螺旋翼を設けたコンバインの穀物排出装置について記載されている。
【０００３】
【発明が解決しようとする課題】
前記公知例は、移動筒内に設けた伸縮螺旋翼に課題がある。即ち、リボンコンベアであるから、搬送力に課題がある。基部側が固定螺旋翼と重合するので詰まることがあるという課題がある。
また、リボンコンベアの基部は自由端なので回転による遠心力が作用して移動筒の内周面に接触するという課題がある。即ち、公知公報の図面では、かなり大径のリボンコンベアが図示されているが、このように大径のものは必ず接触するし、小径にすると搬送力に課題が残る。
【０００４】
【発明の目的】
搬送力の確保、詰まりの防止、破損防止。
【０００５】
【課題を解決するための手段】
よって、本発明は、走行装置２の前方に設けた刈取部４と、前記走行装置２の上方位置に設けた脱穀装置３と、該脱穀装置３の側部に設けたグレンタンクと、該グレンタンク内の穀粒を揚殻する揚穀機構１９と、該揚穀機構１９の上部に基部を取付けた固定筒２１と該固定筒２１に対して伸縮自在に重合させた移動筒２２からなる排出オーガ２０を有するコンバインにおいて、前記固定筒２１内には中空の中空軸３０の外周面に固定した固定螺旋翼２４を設け、前記移動筒２２内には前記中空軸３０内を摺動のみ自在に嵌合して一体回転する回転摺動軸３７を設け、該回転摺動軸３７に摺動のみ自在に嵌合させた係合板３９に中空の小径カラー４１の一端を固定し、該小径カラー４１の他端にボス４３を介して前記小径カラー４１よりも大径の大径カラー４４を固定し、該大径カラー４４の外周に螺旋翼体４７を設けて独立した螺旋翼ピース３６を構成し、各螺旋翼ピース３６は、前記係合板３９が隣接する螺旋翼ピース３６の大径カラー４４内に挿入されて該大径カラー４４に設けた係合体４６に係合するように、前記回転摺動軸３７に取付けると共に、一端の小径カラー４１を穀粒搬送方向上手側の螺旋翼ピース３６の大径カラー４４内に、他端の大径カラー４４に穀粒搬送方向下手側の螺旋翼ピース３６の小径カラー４１を、それぞれ摺動のみ自在に嵌合させ、前記移動筒２２の伸縮に対応してその間隔を変更自在にして伸縮螺旋翼３５を構成し、前記各螺旋翼ピース３６のうち排出オーガ２０の排出口４８側の最先端の螺旋翼ピース３６Ｘは、回転摺動軸３７に回転のみ自在で位置不動に固定し、前記移動筒２２の伸長に対応して最先端の螺旋翼ピース３６Ｘが移動すると、該最先端の螺旋翼ピース３６Ｘが上手側の螺旋翼ピース３６を牽引し、各螺旋翼ピース３６の間隔を広くするように構成し、前記各螺旋翼ピース３６の間の間隔は最大に前記移動筒２２が伸長したときでも各螺旋翼ピース３６の螺旋翼体４７が穀粒を搬送しうるように設定し、前記揚穀機構１９の上部メタル２５に固定のモーター取付板５９に伸縮用モーター５８を固定し、モーター取付板５９に排出オーガ２０と平行の支持部材６０の基部を固定し、支持部材６０の先端には軸受部材６１を設け、軸受部材６１に前記伸縮用モーター５８により回転する回転螺子軸６２の先端を回転自在に取付け、回転螺子軸６２には移動筒２２側に固定の移動体６３の螺子孔を螺合させ、前記支持部材６０の始端部と終端部に前記移動体６３を検知する検知装置７２を設け、前記移動筒２２の基部側外周には、固定筒２１の外周に当接する複数の案内ローラー７０を取付け、複数の案内ローラー７０のうちの一つは、固定筒２１の外周に設けた２本の突条７１の間に位置させたコンバインの穀物排出装置としたものである。
【０００６】
【実施例】
本発明の実施例を図面により説明すると、１は機体フレ−ム、２は機体フレ−ム１の下部位置に設けた走行装置、３は前記機体フレ−ム１の上方位置に設けた脱穀装置、４は機体フレ−ム１の前方位置に設けた刈取部、５は刈取部４の分草体、６は掻込リール、７は刈刃、８は刈取られた穀稈を集束するオーガ、９は前記刈取部４の後部に設けた搬送エレベータである。
前記脱穀装置３内の上部には脱穀室１０を形成する。１１は脱穀室１０内に軸装した扱胴、１２は前記扱胴１１の主として下方を包囲する扱網、１３は前記脱穀室１０の下方に形成した風選室、１４は前記風選室１３内に設けた揺動選別装置、１５は前記風選室１３に送風する送風ファン、１６は１番コンベア、１７は２番コンベアである。
前記脱穀装置３の側部には、前記１番コンベア１６により取出された穀物を一時貯留するグレンタンク１８を設ける。グレンタンク１８内には該タンク１８内の穀物を排出する排出装置（図示省略）を設け、排出装置には該タンク１８内の穀物を揚穀する揚穀機構１９の下部を取付ける。揚穀機構１９の上部には揚穀された穀物を排出する排出オーガ２０の基部を取付ける。排出オーガ２０は、排出オーガ２０の先端が、シリンダ等の旋回機構（図示省略）により前記揚穀機構１９の軸心を中心に縦軸回転自在であって、かつ、オーガ上下シリンダ等の上下動機構（図示省略）により上下動自在に前記揚穀機構１９に取付ける。
【０００７】
しかして、前記排出オーガ２０は、基部側の固定筒２１と先端側の移動筒２２とに分割形成し、移動筒２２の基部側を固定筒２１の先端部外周に嵌合させ、移動筒２２は固定筒２１に対して搬送方向に移動可能に構成し、排出オーガ２０全体長を伸縮させ得るように形成する。
したがって、伸縮しない固定筒２１内には伸縮しない固定螺旋翼２４を設ける。固定筒２１の基部を取付けた上部メタル２５内に軸受２６を設け、該軸受２６に軸装した回転伝動軸２７の異径部（四角軸）２８にボス２９を嵌合固定し、ボス２９に中空軸３０の基部を固定し、中空軸３０の先端には筒部材３１を固定し、筒部材３１は固定筒２１の先端に設けた軸受３２に回転自在に取付け、前記中空軸３０の外周に固定螺旋翼２４を取付ける。
前記固定筒２１の外周に嵌合させた移動筒２２内には、移動筒２２の伸縮に合わせて長さが伸縮し得る伸縮螺旋翼３５を設ける。伸縮螺旋翼３５は、複数の螺旋翼ピース３６を回転摺動軸３７に摺動のみ自在に設け、移動筒２２の伸縮により各螺旋翼ピース３６の間隔を変化させることで対応させる。係合板３９の外周縁に一対の溝３８を形成し、係合板３９の中心には、多角形状の前記回転摺動軸３７が嵌合する嵌合孔４０を形成する。係合板３９には中空の小径カラー４１の一端を固定し、小径カラー４１の他端は前記嵌合孔４０と同様の嵌合孔４２を有するボス４３に固定する。ボス４３には前記小径カラー４１よりも大径の大径カラー４４を固定し、大径カラー４４の他端は開口して開口部４５に形成し、該開口部４５には大径カラー４４内に突出する一対の係合体（ピン）４６を設け、前記大径カラー４４の外周に螺旋翼体４７を設ける。そして、係合板３９、小径カラー４１、ボス４３、大径カラー４４により前記螺旋翼ピース３６を構成する。
【０００８】
各螺旋翼ピース３６は、係合板３９の嵌合孔４０およびボス４３の嵌合孔４２を回転摺動軸３７に挿通し、係合板３９を隣接する螺旋翼ピース３６の大径カラー４４内に挿入し、螺旋翼ピース３６が移動すると、係合板３９が係合体４６に係合するようにする。即ち、組立の一例を示すと、前記固定筒２１側の螺旋翼ピース３６ａ （便宜上符号にアルハベットを付して区別している）の大径カラー４４ａ 内に回転摺動軸３７の先端を位置させ、前記螺旋翼ピース３６ａ の搬送方向下手側の螺旋翼ピース３６ｂ の係合板３９ｂ の溝３８ｂ を係合体４６ａ に合わせて係合板３９ｂ を大径カラー４４ａ 内に挿入し、係合板３９ｂ を回転摺動軸３７に嵌合させる前に溝３８ｂ が係合体４６ａ に対してずれるように螺旋翼ピース３６ｂ を回転させ、この状態で係合板３９ｂ の嵌合孔４０ｂ およびボス４３ｂ の嵌合孔４２ｂ を回転摺動軸３７に挿入し、これを反復して各螺旋翼ピース３６を回転摺動軸３７に取付ける。
そして、各螺旋翼ピース３６は、前記したように、回転摺動軸３７に対して摺動してその間隔を変化させることで移動筒２２の伸縮に対応するが、排出オーガ２０の排出口４８側の最先端の螺旋翼ピース３６Ｘ は、回転摺動軸３７と一体回転するが軸方向には移動しないように回転摺動軸３７に固定する（なお、軸方向には移動しないようにすればよく、その構成は問わず、移動筒２２の先端に設けた軸受５０に取付けてもよい）。即ち、最先端の螺旋翼ピース３６Ｘ を移動筒２２と一緒に伸縮させることにより搬送方向上手側の螺旋翼ピース３６の間隔を変更させる。しかし、螺旋翼ピース３６のうち最も前記固定筒２１に近い螺旋翼ピース３６Ｙ は搬送方向下手側の螺旋翼ピース３６により牽引されないように、前記筒部材３１に筒部材３１と一体回転するが、軸方向には移動しないように取付ける。したがって、螺旋翼ピース３６Ｙ は、螺旋翼体４７を設けた大径カラー４４を回転摺動軸３７に取付ければよく、大径カラー４４の排出口４８側のボス４３は回転摺動軸３７に挿通し、大径カラー４４の固定筒２１側のボス４３は前記筒部材３１の外周に嵌合させ、ボルトで固定している。
【０００９】
前記回転摺動軸３７の基部は、前記筒部材３１に摺動のみ自在に嵌合させ、回転摺動軸３７の先端は、移動筒２２の先端に設けた軸受５０に回転のみ自在に取付ける。したがって、回転する筒部材３１により回転摺動軸３７は回転し、移動筒２２の先端の伸縮によって伸縮し、移動筒２２が縮小したとき回転摺動軸３７の基部は中空軸３０内に収納される。回転摺動軸３７は、角柱形状（スプライン軸も含む）であればよいが、実施例では、六角形状に形成し、複数分割形成したものを固定して一軸形状に形成し、分割部分にグリス５１を溜めるグリス溜５２を形成する。
図１０、図１１は、前記移動筒２２と固定筒２１の間に穀粒が入らないようにしたものであり、前記軸受３２を取付ける取付部材５３に筒部材５４を固定し、筒部材５４にＯリング等のシール部材５５を取付ける。また、前記螺旋翼ピース３６の大径カラー４４の開口部４５にシール部材５６を設け、大径カラー４４内への穀粒の進入を防止する（図１３）。
【００１０】
また、伸縮螺旋翼３５を構成する螺旋翼ピース３６のうち、中間部の螺旋翼体４７は小径に形成することもある（図１４）。
また、前記固定筒２１と移動筒２２との関係は、移動筒２２が最大に伸びたとき、移動筒２２は固定筒２１の長さＴに対して約１／３ 重合するように構成する。しかして、前記移動筒２２の伸縮は、伸縮用モーター５８により行う。伸縮用モーター５８は、前記上部メタル２５に固定のモーター取付板５９に固定し、モーター取付板５９には排出オーガ２０と平行の支持部材６０の基部を固定し、支持部材６０の先端には軸受部材６１を設け、軸受部材６１に前記伸縮用モーター５８により回転する回転螺子軸６２の先端を回転自在に取付ける。回転螺子軸６２には移動体６３の螺子孔を螺合させ、移動体６３を前記移動筒２２側に固定する。したがって、回転螺子軸６２の回転により移動体６３が移動して移動筒２２を伸縮させる。なお、回転螺子軸６２と移動体６３の関係は、移動体６３が移動すればよく、移動体６３を螺旋溝６４に係合する突起６５により形成してもよい。前記軸受部材６１には嵌合溝６６を有する案内ローラー６７を設け、案内ローラー６７はその嵌合溝６６を前記移動筒２２の外周に設けた案内突条６８に係合させる。
【００１１】
図２０、図２１の実施例では、移動筒２２の基部側外周に２個以上の案内ローラー７０を取付け、一方の案内ローラー７０は固定筒２１の外周に当接させ、他方の案内ローラー７０は前記案内ローラー６７と同様に嵌合溝６６を形成して突条に係合させるか、または、固定筒２１の外周に設けた２本の突条７１の間に位置させる。実施例では３個の案内ローラー７０を設けているので、下部の案内ローラー７０に対して上部の２個の案内ローラー７０を等間隔に配置するが、２個の場合は対峙するように設けるとよい。また、各案内ローラー７０はバネ等により固定筒２１の外周に弾着するようにしてもよい。
図２２、図２３の実施例では、前記支持部材６０の始端部と終端部に前記移動体６３を検知する検知装置７２を設けている。そして、検知装置７２は取付板７３に設けるが、取付板７３は検知装置７２の検知部７４に干渉しない範囲で突出させ、ストッパーの作用も期待する。
７５は排出オーガ２０の格納支持装置である。
【００１２】
次に実施例の作用を述べる。
格納支持装置７５に縮小状態の排出オーガ２０の移動筒２２の途中部分を支持させて走行し、圃場に到着すると、機体を前進させ、分草体５で分草し、掻込リール６により穀稈を掻込み、刈刃７の摺動で穀稈を刈取り、脱穀装置３に穀稈を供給し、脱穀装置３内で脱穀して、刈取脱穀作業を行ない、グレンタンク１８内に一定量の穀物が脱穀されると、機体を圃場近傍に待機中の軽トラックまで移動させる。
次に、排出オーガ２０をオーガ上下シリンダにより上動させ、その後回動シリンダにより揚穀機構１９を中心に固定筒２１の取付部を回転させると、移動筒２２の排出口４８は任意の位置に位置する。次に、伸縮スイッチを操作して伸縮用モーター５８に通電すると、回転螺子軸６２が回転し、回転螺子軸６２の回転により移動体６３が移動し、移動筒２２が固定筒２１に対して伸張して、移動筒２２の排出口３２を軽トラックのタンク上方位置に位置させる。
【００１３】
この状態で、揚穀機構１９および排出オーガ２０を作動させると、揚穀機構１９がグレンタンク１８内の穀物を揚穀する。揚穀機構１９の回転によりベベルギヤ等を介して上部メタル２５内の回転伝動軸２７を回転させ、回転伝動軸２７の異径部２８はボス２９を回転させ、ボス２９はボス２９に固定の中空軸３０を回転させ、中空軸３０は固定螺旋翼２４を回転させて、穀粒を搬送する。
そして、中空軸３０の回転により筒部材３１が回転し、筒部材３１に摺動のみ自在に嵌合している回転摺動軸３７が回転し、回転摺動軸３７は伸縮螺旋翼３５の各螺旋翼ピース３６の係合板３９およびボス４３を回転させ、ボス４３は大径カラー４４を回転させて螺旋翼体４７を回転させ、各螺旋翼ピース３６の螺旋翼体４７が回転することで伸縮螺旋翼３５が機能して穀粒を搬送する。
【００１４】
この場合、回転摺動軸３７に対して螺旋翼ピース３６は回転するが摺動自在であり、排出オーガ２０の排出口４８側の最先端の螺旋翼ピース３６Ｘ は、回転摺動軸３７に回転のみ自在で位置不動に固定しているから、移動筒２２が伸長すると、先端の螺旋翼ピース３６Ｘ が移動し、この螺旋翼ピース３６Ｘ の移動により大径カラー４４内を係合板３９が移動し、係合板３９が次の螺旋翼ピース３６の係合体４６に係合すると、この係合体４６を牽引して移動させ、各螺旋翼ピース３６が移動することによって、各螺旋翼ピース３６の間隔が広くなって、移動筒２２の伸長に対応する。
そして、移動筒２２が伸長すると、各螺旋翼ピース３６は搬送方向下手側の螺旋翼ピース３６により牽引されるが、最も固定筒２１に近い部分の螺旋翼ピース３６は、次の搬送方向下手側の螺旋翼ピース３６によって牽引されない独立した独立螺旋翼ピース３６Ｙ に構成しているから、固定筒２１の固定螺旋翼２４の終端と独立螺旋翼ピース３６Ｙ の間の間隔は常時一定となって、軸受等の存在による搬送抵抗があっても確実に穀粒を搬送し、固定筒２１から移動筒２２への穀粒搬送の引継を良好にする。
【００１５】
また、各螺旋翼ピース３６は搬送方向下手側の螺旋翼ピース３６により牽引されて、間隔を広げているだけであるが、排出オーガ２０は排出口４８側が上部メタル２５よりも高いので、各螺旋翼ピース３６は排出口４８より順次間隔を置いて位置し、排出口４８側に片寄ることはない。
また、各螺旋翼ピース３６の間の間隔は、最大に移動筒２２が伸長したときでも各螺旋翼ピース３６の螺旋翼体４７が穀粒を搬送しうるように設定する。そして、各螺旋翼ピース３６の間の間隔は、螺旋翼ピース３６の嵌合孔４２の長さにより設定されているので、各嵌合孔４２の長さを短くして螺旋翼ピース３６の数を多くすると、螺旋翼体４７の間隔は広くならない。
しかして、前記作業が終了してグレンタンク１８内が空になると、排出オーガ２０の移動筒２２の途中部分を格納支持装置７５に支持させて格納し、次の脱穀作業に備えるが、この移動筒２２が縮小するときは、係合板３９が大径カラー４４内を移動してボス４３に当接し、次にボス４３を押して、各螺旋翼ピース３６の間隔を移動筒２２の縮小に対応させて短くする。
【００１６】
そして、排出オーガ２０を格納させて刈取作業穀物の排出作業が終了すると、前記のように刈取脱穀作業および排出作業を反復する。
しかして、前記回転摺動軸３７は、角柱形状に形成し、中間部より分割形成し、分割部分にグリス５１を溜めるグリス溜５２を形成しているから、回転摺動軸３７と係合板３９の嵌合孔４０およびボス４３の嵌合孔４２の摺動部分の摺動を円滑にする。なお、回転摺動軸３７の外周は各螺旋翼ピース３６の小径カラー４１および大径カラー４４に包囲され、係合板３９は大径カラー４４内に位置しているので、排出オーガ２０内を移動する穀粒がグリス５１により汚染されることはなく、回転摺動軸３７の外周は包囲されているので、組立前にグリス溜５２にグリス５１を充填した後はグリス５１を追加補充できず、この点でもグリス溜５２の存在は、各螺旋翼ピース３６の移動の円滑化に貢献する。
【００１７】
しかして、固定筒２１の先端に軸受３２を取付部材５３により取付け、取付部材５３に筒部材５４を一体的に形成し、筒部材５４にＯリング等のシール部材５５を取付けているから、固定筒２１と移動筒２２の重合部分の間に穀粒が進入するのを防止し、移動筒２２の伸縮を円滑かつ確実に行う（図１０、図１１）。
また、螺旋翼ピース３６の大径カラー４４の開口部４５にシール部材５６を設けているから、大径カラー４４内への穀粒の進入を防止し、大径カラー４４内での係合板３９および小径カラー４１の移動を円滑かつ確実に行って、伸縮螺旋翼３５の伸縮を確実にする（図１３）。
しかして、穀粒が排出オーガ２０内に送られる前に、試験的に伸縮螺旋翼３５を作動させることがあり、このようなときは、伸縮螺旋翼３５の前後中心部分の振幅が大きくなることがあるが、伸縮螺旋翼３５を構成する螺旋翼ピース３６のうち、中間部の螺旋翼体４７は小径に形成しているから、振幅が大きくなっても移動筒２２の内周に接触するのを防止し、移動筒２２および伸縮螺旋翼３５の破損を防止する（図１４）。なお、螺旋翼体４７を小径にするに当たり、搬送力を考慮する。
【００１８】
また、前記固定筒２１と移動筒２２との関係は、移動筒２２が最大に伸びたとき、移動筒２２は固定筒２１の長さＴに対して約１／３ 重合するように構成しているから、移動筒２２を伸長させたとき、移動筒２２が傾かず、かつ、重量も重くならず、固定筒２１により確実に支持され、円滑に伸縮する。また、縮小状態のときは固定筒２１は移動筒２２と重合するので、継ぎ手部分のボルトやメタルがないためスムーズに見られる。
しかして、前記移動筒２２の伸縮は、伸縮用モーター５８により行うが、伸縮用モーター５８は揚穀機構１９の上部の上部メタル２５に固定のモーター取付板５９に取付けているから、移動筒２２の伸縮量を大にすることができる。また、固定筒２１と移動筒２２の重合部分を多くすることができ、移動筒２２の垂れ下がりを防止して伸縮用モーター５８への負荷を減少させる。また、固定筒２１あるいは移動筒２２に伸縮用モーター５８を設けていないので、排出オーガ２０を軽くすることができ、、伸縮、旋回等が確実に行え、支持構成も簡単で強固に支持し得る。
【００１９】
また、移動筒２２の伸縮を行う駆動機構の支持部材６０には、伸縮用モーター５８により回転する回転螺子軸６２の先端を支持する軸受部材６１を設け、軸受部材６１に嵌合溝６６を有する案内ローラー６７を設け、案内ローラー６７はその嵌合溝６６を移動筒２２の外周に設けた案内突条６８に係合させているから、移動体６３が回転螺子軸６２に螺合している部分と、案内ローラー６７と案内突条６８との２か所で支持でき、移動筒２２の伸縮を確実に案内する。
また、移動筒２２の基部側外周に２個以上の案内ローラー７０を取付けると、より一層移動筒２２の伸縮を確実にする（図２０、２１）。
また、移動体６３の移動を検知する検知装置７２を設けているから、移動筒２２の伸縮を確実に停止させる。この場合、検知装置７２は取付板７３に設け、取付板７３は検知装置７２の検知部７４に干渉しない範囲で突出させているから、検知装置７２が故障等の理由で作動しなくても、移動体６３の移動を取付板７３により停止させ、取付板７３はストッパーとしても作用し、伸縮駆動機構ばかりでなく、排出オーガ２０全体の破損も防止できる。
【００２０】
【効果】
本発明は、走行装置２の前方に設けた刈取部４と、前記走行装置２の上方位置に設けた脱穀装置３と、該脱穀装置３の側部に設けたグレンタンクと、該グレンタンク内の穀粒を揚殻する揚穀機構１９と、該揚穀機構１９の上部に基部を取付けた固定筒２１と該固定筒２１に対して伸縮自在に重合させた移動筒２２からなる排出オーガ２０を有するコンバインにおいて、前記固定筒２１内には中空の中空軸３０の外周面に固定した固定螺旋翼２４を設け、前記移動筒２２内には前記中空軸３０内を摺動のみ自在に嵌合して一体回転する回転摺動軸３７を設け、該回転摺動軸３７に摺動のみ自在に嵌合させた係合板３９に中空の小径カラー４１の一端を固定し、該小径カラー４１の他端にボス４３を介して前記小径カラー４１よりも大径の大径カラー４４を固定し、該大径カラー４４の外周に螺旋翼体４７を設けて独立した螺旋翼ピース３６を構成し、各螺旋翼ピース３６は、前記係合板３９が隣接する螺旋翼ピース３６の大径カラー４４内に挿入されて該大径カラー４４に設けた係合体４６に係合するように、前記回転摺動軸３７に取付けると共に、一端の小径カラー４１を穀粒搬送方向上手側の螺旋翼ピース３６の大径カラー４４内に、他端の大径カラー４４に穀粒搬送方向下手側の螺旋翼ピース３６の小径カラー４１を、それぞれ摺動のみ自在に嵌合させ、前記移動筒２２の伸縮に対応してその間隔を変更自在にして伸縮螺旋翼３５を構成し、前記各螺旋翼ピース３６のうち排出オーガ２０の排出口４８側の最先端の螺旋翼ピース３６Ｘは、回転摺動軸３７に回転のみ自在で位置不動に固定し、前記移動筒２２の伸長に対応して最先端の螺旋翼ピース３６Ｘが移動すると、該最先端の螺旋翼ピース３６Ｘが上手側の螺旋翼ピース３６を牽引し、各螺旋翼ピース３６の間隔を広くするように構成し、前記各螺旋翼ピース３６の間の間隔は最大に前記移動筒２２が伸長したときでも各螺旋翼ピース３６の螺旋翼体４７が穀粒を搬送しうるように設定し、前記揚穀機構１９の上部メタル２５に固定のモーター取付板５９に伸縮用モーター５８を固定し、モーター取付板５９に排出オーガ２０と平行の支持部材６０の基部を固定し、支持部材６０の先端には軸受部材６１を設け、軸受部材６１に前記伸縮用モーター５８により回転する回転螺子軸６２の先端を回転自在に取付け、回転螺子軸６２には移動筒２２側に固定の移動体６３の螺子孔を螺合させ、前記支持部材６０の始端部と終端部に前記移動体６３を検知する検知装置７２を設け、前記移動筒２２の基部側外周には、固定筒２１の外周に当接する複数の案内ローラー７０を取付け、複数の案内ローラー７０のうちの一つは、固定筒２１の外周に設けた２本の突条７１の間に位置させたコンバインの穀物排出装置としたものであるから、穀粒を確実に搬送でき、螺旋翼ピース３６は固定螺旋翼２４と重合しないので、穀粒が詰まることも防止でき、螺旋翼ピース３６は回転摺動軸３７に嵌合させているから、移動筒２２の内周面に接触することも防止でき、また、移動筒２２を伸縮させると、各螺旋翼ピース３６がその間隔を変更して伸縮螺旋翼３５を伸縮させ、簡単な構成で螺旋翼３５を伸縮させることができる。
また、本発明は、伸縮用モーター５８は揚穀機構１９の上部の上部メタル２５に固定のモーター取付板５９に取付けているから、移動筒２２の伸縮量を大にすることができ、また、固定筒２１と移動筒２２の重合部分を多くすることができ、移動筒２２の垂れ下がりを防止して伸縮用モーター５８への負荷を減少させ、また、固定筒２１あるいは移動筒２２に伸縮用モーター５８を設けていないので、排出オーガ２０を軽くすることができ、、伸縮、旋回等が確実に行え、支持構成も簡単で強固に支持し得る。
また、本発明は、支持部材６０の始端部と終端部に前記移動体６３を検知する検知装置７２を設けているから、移動筒２２の伸縮を確実に停止させる
また、本発明は、前記移動筒２２の基部側外周には、固定筒２１の外周に当接する複数の案内ローラー７０を取付け、複数の案内ローラー７０のうちの一つは、固定筒２１の外周に設けた２本の突条７１の間に位置させているから、移動筒２２の伸縮を確実に案内する。
【図面の簡単な説明】
【図１】コンバインの全体側面図。
【図２】排出オーガーの側面図。
【図３】同断面図。
【図４】螺旋翼ピースの組立状態斜視図。
【図５】螺旋翼ピースの断面図。
【図６】同組立状態の一例を示す断面図。
【図７】同伸長状態断面図。
【図８】回転摺動軸の第２実施例図。
【図９】同断面図。
【図１０】シール部材を設けた状態の断面図。
【図１１】同拡大図。
【図１２】シール部材を設けた状態の断面図。
【図１３】同斜視図。
【図１４】伸縮螺旋翼の他の実施例図。
【図１５】固定筒と移動筒の関係を示す側面図。
【図１６】伸縮機構の側面図。
【図１７】移動体の断面図。
【図１８】伸縮機構の案内装置の側面図。
【図１９】同背面図。
【図２０】同第２実施例図。
【図２１】同断面図。
【図２２】同検知装置の側面図。
【図２３】同拡大図。
【符号の説明】
１…機体フレ−ム、２…走行装置、３…脱穀装置、４…刈取部、５…分草体、６…掻込リール、７…刈刃、８…オーガ、９…搬送エレベータ、１０…脱穀室、１１…扱胴、１２…扱網、１３…風選室、１４…揺動選別装置、１５…送風ファン、１６…１番コンベア、１７…２番コンベア、１８…グレンタンク、１９…揚穀機構、２０…排出オーガ、２１…固定筒、２２…移動筒、２４…固定螺旋翼、２５…上部メタル、２６…軸受、２７…回転伝動軸、２８…異径部、２９…ボス、３０…中空軸、３１…筒部材、３２…軸受、３５…伸縮螺旋翼、３６…螺旋翼ピース、３７…回転摺動軸、３８…溝、３９…係合板、４０…嵌合孔、４１…小径カラー、４２…嵌合孔、４３…ボス、４４…大径カラー、４５…開口部、４６…係合体、４７…螺旋翼体、４８…排出口、５０…軸受、５１…グリス、５２…グリス溜、５３…取付部材、５４…筒部材、５５…シール部材、５６…シール部材、５８…伸縮用モーター、５９…モーター取付板、６０…支持部材、６１…軸受部材、６２…回転螺子軸、６３…移動体、６４…螺旋溝、６５…突起、６６…嵌合溝、６７…案内ローラー、６８…案内突条、７０…案内ローラー、７１…突条、７２…検知装置、７３…取付板、７４…検知部、７５…格納支持装置。[0001]
[Industrial applications]
The present invention relates to a combine grain discharging device.
[0002]
[Prior art]
Conventionally, Japanese Patent Application Laid-Open No. 63-279719 discloses a reaper provided in front of a traveling device, a threshing device provided above the traveling device, and a Glen tank provided on a side portion of the threshing device. And a discharge auger comprising a frying mechanism for raising the grains in the Glen tank, a fixed cylinder having a base mounted on the upper part of the graining mechanism, and a movable cylinder stretchably superimposed on the fixed cylinder. A fixed spiral blade fixed to the outer peripheral surface of a hollow hollow shaft is provided in the fixed cylinder, and the movable shaft is freely movable in and out by screwing the inside of the hollow shaft into the movable cylinder. This paper describes a combine grain discharging device provided with telescopic spiral blades constituted by a rotary sliding shaft that rotates integrally with the rotary sliding shaft, and a ribbon conveyor having a fixed end and a free end on the base side of the rotary sliding shaft.
[0003]
[Problems to be solved by the invention]
The known example has a problem with a telescopic spiral wing provided in a moving cylinder. That is, since it is a ribbon conveyor, there is a problem in the conveying force. There is a problem that the base side overlaps with the fixed spiral blade, so that it may be clogged.
In addition, since the base of the ribbon conveyor is a free end, there is a problem that centrifugal force due to rotation acts on the base and comes into contact with the inner peripheral surface of the moving cylinder. That is, in the drawings of the publicly known publication, a ribbon conveyor having a considerably large diameter is shown, but such a large diameter one always comes into contact with the ribbon conveyor.
[0004]
[Object of the invention]
Ensuring transfer force, preventing jamming, and preventing breakage.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a mowing unit 4 provided in front of the traveling device 2, a threshing device 3 provided at a position above the traveling device 2, a Glen tank provided on a side of the threshing device 3, Discharge consisting of a frying mechanism 19 for raising husks in the tank, a fixed cylinder 21 having a base mounted on the upper part of the frying mechanism 19, and a movable cylinder 22 which is superimposed and stretchable on the fixed cylinder 21. In the combine having the auger 20, a fixed spiral blade 24 fixed to the outer peripheral surface of a hollow hollow shaft 30 is provided in the fixed tube 21, and the movable tube 22 can slide only inside the hollow shaft 30 in the movable tube 22. Rotating sliding shaft 37 that fits and rotates integrallyAnd one end of a hollow small-diameter collar 41 is fixed to an engagement plate 39 fitted only slidably on the rotary sliding shaft 37, and the other end of the small-diameter collar 41 is connected to the other end of the small-diameter collar via a boss 43. A large-diameter collar 44 having a diameter larger than 41 is fixed, and a spiral wing body 47 is provided on the outer periphery of the large-diameter collar 44 to constitute an independent spiral wing piece 36. Is attached to the rotary sliding shaft 37 so as to be inserted into the large-diameter collar 44 of the adjacent spiral wing piece 36 and engage with the engaging body 46 provided on the large-diameter collar 44, and a small-diameter collar 41 at one end. The small-diameter collar 41 of the spiral wing piece 36 on the lower side in the grain transport direction is freely slidable into the large-diameter collar 44 of the spiral wing piece 36 on the upper side in the grain transport direction, and the large-diameter collar 44 on the other end is freely slidable. To accommodate the expansion and contraction of the moving cylinder 22 The leading and trailing spiral wing pieces 36X on the discharge port 48 side of the discharge auger 20 among the spiral wing pieces 36 are rotated only by the rotary sliding shaft 37. When it is freely and fixed in position and the most advanced spiral wing piece 36X moves in response to the extension of the moving cylinder 22, the most advanced spiral wing piece 36X pulls the better spiral wing piece 36, The interval between the spiral wing pieces 36 is configured to be widened, and the interval between the spiral wing pieces 36 is maximized. Even when the moving cylinder 22 is extended, the spiral wing body 47 of each spiral wing piece 36 reduces the grain. The telescopic motor 58 is fixed to a motor mounting plate 59 fixed to the upper metal 25 of the frying mechanism 19, and the base of the support member 60 parallel to the discharge auger 20 is fixed to the motor mounting plate 59. Fix and support A bearing member 61 is provided at the tip of the member 60, and the tip of a rotary screw shaft 62 rotated by the telescopic motor 58 is rotatably attached to the bearing member 61, and the rotary screw shaft 62 is fixed to the movable cylinder 22 side. The screw holes of the body 63 are screwed together, and a detection device 72 for detecting the moving body 63 is provided at the start end and the end of the support member 60. A plurality of guide rollers 70 are attached to the fixed cylinder 21, and one of the plurality of guide rollers 70 is located between two ridges 71 provided on the outer periphery of the fixed cylinder 21.This is a combine grain discharge device.
[0006]
【Example】
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. 1 is a body frame, 2 is a traveling device provided at a lower position of the body frame 1, and 3 is a threshing device provided at a position above the body frame 1. Reference numeral 4 denotes a cutting unit provided in front of the body frame 1. Reference numeral 5 denotes a weeding body of the cutting unit 4. Reference numeral 6 denotes a scraping reel. Reference numeral 7 denotes a cutting blade. Reference numeral 8 denotes an auger for collecting cut culms. Is a transport elevator provided at the rear of the reaper 4.
A threshing room 10 is formed in the upper part of the threshing device 3. Reference numeral 11 denotes a handling cylinder mounted in the threshing room 10, reference numeral 12 denotes a handling net that mainly surrounds the lower portion of the handling cylinder 11, reference numeral 13 denotes a wind selection chamber formed below the threshing room 10, and reference numeral 14 denotes the wind selection chamber 13. A swing sorting device provided therein, 15 is a blower fan for blowing into the wind selection chamber 13, 16 is a first conveyor, and 17 is a second conveyor.
On the side of the threshing device 3, a Glen tank 18 for temporarily storing the grains taken out by the first conveyor 16 is provided. A discharge device (not shown) for discharging the grains in the tank 18 is provided in the Glen tank 18, and a lower portion of a frying mechanism 19 for frying the grains in the tank 18 is attached to the discharge device. A base of a discharge auger 20 for discharging the grain is mounted on the upper part of the frying mechanism 19. The discharge auger 20 is configured such that the tip of the discharge auger 20 is rotatable about the axis of the frying mechanism 19 by a turning mechanism (not shown) such as a cylinder, and the vertical movement of an auger vertical cylinder or the like. A mechanism (not shown) is attached to the frying mechanism 19 so as to be vertically movable.
[0007]
Thus, the discharge auger 20 is divided into a fixed cylinder 21 on the base side and a movable cylinder 22 on the distal end side, and the base side of the movable cylinder 22 is fitted to the outer periphery of the distal end of the fixed cylinder 21. Is formed so as to be movable in the transport direction with respect to the fixed cylinder 21 and is formed so that the entire length of the discharge auger 20 can be expanded and contracted.
Therefore, the fixed spiral blade 24 which does not expand and contract is provided in the fixed cylinder 21 which does not expand and contract. A bearing 26 is provided in an upper metal 25 to which the base of the fixed cylinder 21 is attached, and a boss 29 is fitted and fixed to a different diameter portion (square shaft) 28 of a rotary transmission shaft 27 mounted on the bearing 26. The base of the hollow shaft 30 is fixed, and a cylindrical member 31 is fixed to the distal end of the hollow shaft 30. The cylindrical member 31 is rotatably mounted on a bearing 32 provided at the distal end of the fixed cylinder 21, and is mounted on the outer periphery of the hollow shaft 30. The fixed spiral blade 24 is mounted.
Inside the movable cylinder 22 fitted to the outer periphery of the fixed cylinder 21, there is provided a telescopic spiral wing 35 whose length can expand and contract in accordance with the expansion and contraction of the movable cylinder 22. The telescopic spiral wing 35 is provided with a plurality of spiral wing pieces 36 slidably provided only on the rotary sliding shaft 37 and by changing the interval between the spiral wing pieces 36 by the expansion and contraction of the moving cylinder 22. A pair of grooves 38 is formed on the outer peripheral edge of the engaging plate 39, and a fitting hole 40 is formed at the center of the engaging plate 39 so that the polygonal rotary sliding shaft 37 is fitted. One end of a hollow small-diameter collar 41 is fixed to the engagement plate 39, and the other end of the small-diameter collar 41 is fixed to a boss 43 having a fitting hole 42 similar to the fitting hole 40. A large-diameter collar 44 having a larger diameter than the small-diameter collar 41 is fixed to the boss 43, and the other end of the large-diameter collar 44 is formed in an opening 45 by opening the large-diameter collar 44. A pair of engaging bodies (pins) 46 are provided, and a spiral wing 47 is provided on the outer periphery of the large-diameter collar 44. The spiral wing piece 36 is constituted by the engagement plate 39, the small diameter collar 41, the boss 43, and the large diameter collar 44.
[0008]
Each spiral wing piece 36 is inserted through the fitting hole 40 of the engaging plate 39 and the fitting hole 42 of the boss 43 into the rotary sliding shaft 37, and the engaging plate 39 is inserted into the large-diameter collar 44 of the adjacent spiral wing piece 36. When the spiral blade piece 36 is inserted and moved, the engagement plate 39 is engaged with the engagement body 46. That is, as an example of assembling, the tip of the rotary sliding shaft 37 is positioned within the large-diameter collar 44a of the spiral wing piece 36a on the fixed cylinder 21 side (for convenience, the code is distinguished by attaching an Alhabet). The engagement plate 39b is inserted into the large-diameter collar 44a by aligning the groove 38b of the engagement plate 39b of the spiral wing piece 36b on the lower side in the transport direction of the spiral wing piece 36a with the engagement body 46a. Before fitting into the engagement member 37, the spiral blade piece 36b is rotated so that the groove 38b is displaced with respect to the engagement body 46a. In this state, the engagement hole 40b of the engagement plate 39b and the engagement hole 42b of the boss 43b are rotationally slid. The spiral wing pieces 36 are inserted into the shaft 37, and each of the spiral wing pieces 36 is attached to the rotary sliding shaft 37.
As described above, each spiral wing piece 36 slides with respect to the rotary sliding shaft 37 to change the distance between the spiral wing pieces 36 and expands and contracts the moving cylinder 22. The tip helical wing piece 36X on the side rotates integrally with the rotary sliding shaft 37, but is fixed to the rotary sliding shaft 37 so as not to move in the axial direction. It may be attached to a bearing 50 provided at the tip of the moving cylinder 22 regardless of the configuration. That is, the space between the spiral wing pieces 36 on the upper side in the transport direction is changed by expanding and contracting the most advanced spiral wing pieces 36X together with the moving cylinder 22. However, among the spiral wing pieces 36, the spiral wing piece 36Y closest to the fixed cylinder 21 rotates integrally with the cylindrical member 31 so that the spiral wing piece 36Y is not pulled by the spiral wing piece 36 on the lower side in the transport direction. Mount so that it does not move in the direction. Therefore, the spiral blade piece 36Y may be provided by attaching the large-diameter collar 44 provided with the spiral blade body 47 to the rotary sliding shaft 37, and the boss 43 on the discharge port 48 side of the large-diameter collar 44 is connected to the rotary sliding shaft 37. The boss 43 of the large-diameter collar 44 on the fixed cylinder 21 side is fitted to the outer periphery of the cylindrical member 31 and fixed by bolts.
[0009]
The base of the rotary sliding shaft 37 is slidably fitted to the cylindrical member 31 only, and the distal end of the rotary sliding shaft 37 is attached to a bearing 50 provided at the distal end of the movable cylinder 22 so as to be rotatable only. Therefore, the rotating and sliding shaft 37 is rotated by the rotating tubular member 31, and expands and contracts by the expansion and contraction of the tip of the movable barrel 22. When the movable barrel 22 is reduced, the base of the rotating and sliding shaft 37 is housed in the hollow shaft 30. You. The rotary sliding shaft 37 may have a prismatic shape (including a spline shaft). In the embodiment, the rotary sliding shaft 37 is formed in a hexagonal shape. A grease reservoir 52 for storing 51 is formed.
FIGS. 10 and 11 show a structure in which grains are prevented from entering between the moving cylinder 22 and the fixed cylinder 21. A cylinder member 54 is fixed to a mounting member 53 for mounting the bearing 32, and Attach a seal member 55 such as an O-ring. Further, a sealing member 56 is provided at the opening 45 of the large-diameter collar 44 of the spiral blade piece 36 to prevent grains from entering the large-diameter collar 44 (FIG. 13).
[0010]
Further, the spiral wing body 47 in the middle of the spiral wing pieces 36 constituting the telescopic spiral wing 35 may be formed to have a small diameter (FIG. 14).
The relationship between the fixed barrel 21 and the movable barrel 22 is such that when the movable barrel 22 is extended to the maximum, the movable barrel 22 has the length of the fixed barrel 21.TAbout 1/3 of the polymer. The expansion and contraction of the moving cylinder 22 is performed by an expansion and contraction motor 58. The telescopic motor 58 is fixed to a motor mounting plate 59 fixed to the upper metal 25, a base of a supporting member 60 parallel to the discharge auger 20 is fixed to the motor mounting plate 59, and a bearing is provided at the tip of the supporting member 60. A member 61 is provided, and a tip of a rotary screw shaft 62 rotated by the telescopic motor 58 is rotatably attached to the bearing member 61. A screw hole of a moving body 63 is screwed into the rotary screw shaft 62, and the moving body 63 is fixed to the moving cylinder 22 side. Therefore, the moving body 63 is moved by the rotation of the rotary screw shaft 62 to expand and contract the moving cylinder 22. Note that the relationship between the rotary screw shaft 62 and the moving body 63 may be such that the moving body 63 moves, and the moving body 63 may be formed by the protrusion 65 engaging with the spiral groove 64. The bearing member 61 is provided with a guide roller 67 having a fitting groove 66, and the guide roller 67 engages the fitting groove 66 with a guide ridge 68 provided on the outer periphery of the movable cylinder 22.
[0011]
In the embodiment of FIGS. 20 and 21, two or more guide rollers 70 are attached to the outer periphery of the base side of the movable cylinder 22, one of the guide rollers 70 is brought into contact with the outer periphery of the fixed cylinder 21, and the other guide roller 70 is The fitting groove 66 is formed in the same manner as the guide roller 67 and is engaged with the ridge, or is positioned between two ridges 71 provided on the outer periphery of the fixed cylinder 21. In the embodiment, since three guide rollers 70 are provided, the upper two guide rollers 70 are arranged at equal intervals with respect to the lower guide roller 70, but in the case of two, they are provided so as to face each other. Good. Further, each guide roller 70 may be elastically attached to the outer periphery of the fixed cylinder 21 by a spring or the like.
In the embodiment of FIGS. 22 and 23, a detection device 72 for detecting the moving body 63 is provided at the start end and the end of the support member 60. The detecting device 72 is provided on the mounting plate 73. The mounting plate 73 is projected so as not to interfere with the detecting portion 74 of the detecting device 72, and the function of the stopper is expected.
Reference numeral 75 denotes a storage and support device for the discharge auger 20.
[0012]
nextExample ofThe operation will be described.
The vehicle travels with the storage support device 75 supporting the middle part of the movable cylinder 22 of the discharge auger 20 in the reduced state, and when it arrives at the field, the body is advanced, the weeding body 5 is weeded, and the stalks are pulled by the scraping reel 6. And stalk the cutting blade 7 to cut the stalks, supply the stalks to the threshing device 3, thresh in the threshing device 3, perform cutting and threshing work, and set a certain amount of grain in the Glen tank 18. When threshing, the aircraft is moved to a waiting light truck near the field.
Next, when the discharge auger 20 is moved upward by the auger vertical cylinder, and then the mounting portion of the fixed cylinder 21 is rotated by the rotating cylinder around the frying mechanism 19, the discharge port 48 of the movable cylinder 22 is moved to an arbitrary position. To position. Next, when a telescopic switch is operated to energize the telescopic motor 58, the rotary screw shaft 62 rotates, and the rotation of the rotary screw shaft 62 causes the moving body 63 to move. Then, the discharge port 32 of the movable cylinder 22 is positioned above the tank of the light truck.
[0013]
In this state, when the frying mechanism 19 and the discharge auger 20 are operated, the frying mechanism 19 flies the grains in the Glen tank 18. The rotation of the grain raising mechanism 19 causes the rotation transmission shaft 27 in the upper metal 25 to rotate via a bevel gear or the like, the different diameter portion 28 of the rotation transmission shaft 27 rotates the boss 29, and the boss 29 is a hollow fixed to the boss 29. The shaft 30 is rotated, and the hollow shaft 30 rotates the fixed spiral blade 24 to convey the grain.
Then, the rotation of the hollow shaft 30 rotates the cylindrical member 31, and the rotary sliding shaft 37, which is slidably fitted to the cylindrical member 31, rotates. The engagement plate 39 and the boss 43 of the spiral wing piece 36 are rotated, and the boss 43 rotates the large-diameter collar 44 to rotate the spiral wing body 47, and the spiral wing body 47 of each spiral wing piece 36 rotates to expand and contract. The spiral blades 35 function to transport the grains.
[0014]
In this case, the spiral blade piece 36 rotates but is slidable with respect to the rotary sliding shaft 37, and the most advanced spiral blade piece 36X on the discharge port 48 side of the discharge auger 20 rotates with the rotary sliding shaft 37. When the movable cylinder 22 is extended, the spiral wing piece 36X at the tip moves, and the engagement plate 39 moves within the large-diameter collar 44 by the movement of the spiral wing piece 36X. When the engaging plate 39 is engaged with the engaging body 46 of the next spiral wing piece 36, the engaging body 46 is pulled and moved, and each spiral wing piece 36 moves, so that the interval between the spiral wing pieces 36 is widened. This corresponds to the extension of the movable barrel 22.
When the movable cylinder 22 is extended, each spiral wing piece 36 is pulled by the spiral wing piece 36 on the lower side in the transport direction, but the spiral wing piece 36 closest to the fixed cylinder 21 is moved to the lower side in the next transport direction. Of the fixed spiral blade 24 of the fixed cylinder 21 and the independent spiral blade piece 36Y are always constant, and the bearings are always fixed. Even if there is a transport resistance due to the presence of the like, the kernel is reliably transported, and the transfer of the kernel from the fixed cylinder 21 to the movable cylinder 22 is improved.
[0015]
Further, each spiral wing piece 36 is pulled by the spiral wing piece 36 on the lower side in the transport direction and only widens the interval. However, since the discharge auger 20 is higher on the discharge port 48 side than the upper metal 25, each spiral wing piece 36 The wing pieces 36 are sequentially spaced from the outlet 48, and do not shift to the outlet 48 side.
The interval between the spiral wing pieces 36 is set such that the spiral wing body 47 of each spiral wing piece 36 can transport the grain even when the moving cylinder 22 is extended to the maximum. Since the interval between the spiral wing pieces 36 is set by the length of the fitting hole 42 of the spiral wing piece 36, the length of each fitting hole 42 is shortened to reduce the number of the spiral wing pieces 36. Is increased, the interval between the spiral wings 47 does not increase.
When the work is completed and the interior of the Glen tank 18 is emptied, the middle part of the moving cylinder 22 of the discharge auger 20 is stored and supported by the storage support device 75 to prepare for the next threshing work. When the cylinder 22 contracts, the engaging plate 39 moves in the large-diameter collar 44 and abuts the boss 43, and then pushes the boss 43 so that the interval between the spiral wing pieces 36 corresponds to the contraction of the movable cylinder 22. And shorten it.
[0016]
Then, when the discharging auger 20 is stored and the discharging operation of the reaping work grains is completed, the cutting and threshing operation and the discharging operation are repeated as described above.
Since the rotary sliding shaft 37 is formed in a prismatic shape, is divided from an intermediate portion, and forms a grease reservoir 52 for storing grease 51 in the divided portion, the rotary sliding shaft 37 and the engaging plate 39 are formed. The sliding of the sliding portion of the fitting hole 40 and the fitting hole 42 of the boss 43 is smooth. Note that the outer periphery of the rotary sliding shaft 37 is surrounded by the small-diameter collar 41 and the large-diameter collar 44 of each spiral wing piece 36, and the engagement plate 39 is located within the large-diameter collar 44, so that it moves within the discharge auger 20. The grease 51 is not contaminated by the grease 51, and since the outer periphery of the rotary sliding shaft 37 is surrounded, the grease 51 cannot be additionally refilled after the grease reservoir 52 is filled with the grease 51 before assembly. Also in this regard, the presence of the grease reservoir 52 contributes to smooth movement of each spiral wing piece 36.
[0017]
Thus, the bearing 32 is attached to the distal end of the fixed cylinder 21 by the attachment member 53, the cylinder member 54 is formed integrally with the attachment member 53, and the seal member 55 such as an O-ring is attached to the cylinder member 54. The grain is prevented from entering between the overlapping portions of the cylinder 21 and the moving cylinder 22, and the moving cylinder 22 is smoothly and reliably expanded and contracted (FIGS. 10 and 11).
Further, since the seal member 56 is provided at the opening 45 of the large diameter collar 44 of the spiral blade piece 36, the entry of grains into the large diameter collar 44 is prevented, and the engagement plate 39 in the large diameter collar 44 is prevented. In addition, the movement of the small-diameter collar 41 is performed smoothly and reliably, so that the expansion and contraction of the telescopic spiral blade 35 is ensured (FIG. 13).
However, before the kernel is sent into the discharge auger 20, the telescopic spiral blade 35 may be operated on a trial basis. In such a case, the amplitude of the front and rear central portion of the telescopic spiral blade 35 may increase. However, among the spiral wing pieces 36 constituting the telescopic spiral wing 35, the spiral wing body 47 in the middle portion is formed to have a small diameter, so that the spiral wing body 47 contacts the inner periphery of the moving cylinder 22 even when the amplitude increases. To prevent the movable cylinder 22 and the telescopic spiral wing 35 from being damaged (FIG. 14). In order to reduce the diameter of the spiral blade body 47, the conveying force is taken into consideration.
[0018]
The relationship between the fixed barrel 21 and the movable barrel 22 is such that when the movable barrel 22 is extended to the maximum, the movable barrel 22 has the length of the fixed barrel 21.TSince the moving cylinder 22 is extended, the moving cylinder 22 does not tilt and the weight does not increase when the moving cylinder 22 is extended, and is securely supported by the fixed cylinder 21. It expands and contracts smoothly. When the fixed cylinder 21 is in the contracted state, the fixed cylinder 21 overlaps with the movable cylinder 22, so that there is no bolt or metal at the joint portion, so that the fixed cylinder 21 can be seen smoothly.
The expansion and contraction of the moving cylinder 22 is performed by an expansion and contraction motor 58. Since the expansion and contraction motor 58 is mounted on a motor mounting plate 59 fixed to the upper metal 25 on the upper part of the lifting mechanism 19, the moving cylinder 22 is expanded. Can increase the amount of expansion and contraction. Further, the overlapping portion between the fixed cylinder 21 and the movable cylinder 22 can be increased, and the movable cylinder 22 is prevented from sagging to reduce the load on the motor 58 for expansion and contraction. In addition, since the telescopic motor 58 is not provided in the fixed cylinder 21 or the movable cylinder 22, the discharge auger 20 can be made lighter, the expansion and contraction, turning, and the like can be reliably performed, and the support structure can be simply and firmly supported. .
[0019]
The support member 60 of the drive mechanism that expands and contracts the movable cylinder 22 is provided with a bearing member 61 that supports the tip of a rotary screw shaft 62 that is rotated by an expansion / contraction motor 58, and the bearing member 61 has a fitting groove 66. The guide roller 67 is provided, and the guide roller 67 engages the fitting groove 66 with the guide ridge 68 provided on the outer periphery of the moving cylinder 22, so that the moving body 63 is screwed to the rotary screw shaft 62. And the guide roller 67 and the guide ridge 68 can be supported to reliably guide the expansion and contraction of the movable cylinder 22.
Further, when two or more guide rollers 70 are attached to the outer periphery of the base of the movable cylinder 22, the expansion and contraction of the movable cylinder 22 is further ensured (FIGS. 20 and 21).
Further, since the detection device 72 for detecting the movement of the moving body 63 is provided, the expansion and contraction of the moving cylinder 22 is reliably stopped. In this case, since the detecting device 72 is provided on the mounting plate 73 and the mounting plate 73 is protruded in a range that does not interfere with the detecting portion 74 of the detecting device 72, even if the detecting device 72 does not operate due to a failure or the like, The movement of the moving body 63 is stopped by the mounting plate 73, and the mounting plate 73 also functions as a stopper, so that not only the expansion / contraction drive mechanism but also the entire discharge auger 20 can be prevented from being damaged.
[0020]
【effect】
The present invention includes a mowing unit 4 provided in front of the traveling device 2, a threshing device 3 provided in a position above the traveling device 2, a Glen tank provided in a side portion of the threshing device 3, and an inside of the Glen tank. A discharge auger 20 comprising a frying mechanism 19 for raising the husks of a grain, a fixed cylinder 21 having a base mounted on the upper part of the frying mechanism 19, and a movable cylinder 22 superposed and stretched on the fixed cylinder 21. A fixed spiral blade 24 fixed to the outer peripheral surface of a hollow hollow shaft 30 is provided in the fixed cylinder 21, and only the sliding inside the hollow shaft 30 is fitted in the movable cylinder 22. Sliding shaft 37 that rotates togetherAnd one end of a hollow small-diameter collar 41 is fixed to an engagement plate 39 fitted only slidably on the rotary sliding shaft 37, and the other end of the small-diameter collar 41 is connected to the other end of the small-diameter collar via a boss 43. A large-diameter collar 44 having a diameter larger than 41 is fixed, and a spiral wing body 47 is provided on the outer periphery of the large-diameter collar 44 to constitute an independent spiral wing piece 36. Is attached to the rotary sliding shaft 37 so as to be inserted into the large-diameter collar 44 of the adjacent spiral wing piece 36 and engage with the engaging body 46 provided on the large-diameter collar 44, and a small-diameter collar 41 at one end. The small-diameter collar 41 of the spiral wing piece 36 on the lower side in the grain transport direction is freely slidable into the large-diameter collar 44 of the spiral wing piece 36 on the upper side in the grain transport direction, and the large-diameter collar 44 on the other end is freely slidable. To accommodate the expansion and contraction of the moving cylinder 22 The leading and trailing spiral wing pieces 36X on the discharge port 48 side of the discharge auger 20 among the spiral wing pieces 36 are rotated only by the rotary sliding shaft 37. When it is freely and fixed in position and the most advanced spiral wing piece 36X moves in response to the extension of the moving cylinder 22, the most advanced spiral wing piece 36X pulls the better spiral wing piece 36, The interval between the spiral wing pieces 36 is configured to be widened, and the interval between the spiral wing pieces 36 is maximized. Even when the moving cylinder 22 is extended, the spiral wing body 47 of each spiral wing piece 36 reduces the grain. The telescopic motor 58 is fixed to a motor mounting plate 59 fixed to the upper metal 25 of the frying mechanism 19, and the base of the support member 60 parallel to the discharge auger 20 is fixed to the motor mounting plate 59. Fix and support A bearing member 61 is provided at the tip of the member 60, and the tip of a rotary screw shaft 62 rotated by the telescopic motor 58 is rotatably attached to the bearing member 61, and the rotary screw shaft 62 is fixed to the movable cylinder 22 side. The screw holes of the body 63 are screwed together, and a detection device 72 for detecting the moving body 63 is provided at the start end and the end of the support member 60. A plurality of guide rollers 70 are attached to the fixed cylinder 21, and one of the plurality of guide rollers 70 is located between two ridges 71 provided on the outer periphery of the fixed cylinder 21.Since this is a combine grain discharging device, the grain can be transported reliably, and the spiral wing piece 36 does not overlap with the fixed spiral wing 24, so that the grain can be prevented from being clogged, and the spiral wing piece 36 can be rotated. Since the moving cylinder 22 is fitted to the moving shaft 37, it can be prevented from coming into contact with the inner peripheral surface of the moving cylinder 22. Further, when the moving cylinder 22 is expanded and contracted, the spiral wing pieces 36 change the distance between the helical wing pieces 36 and extend and contract. The wings 35 can be expanded and contracted, and the spiral wings 35 can be expanded and contracted with a simple configuration.
Further, according to the present invention, since the telescopic motor 58 is mounted on the motor mounting plate 59 fixed to the upper metal 25 on the upper part of the lifting mechanism 19, the amount of expansion and contraction of the movable cylinder 22 can be increased. The overlapping portion between the fixed cylinder 21 and the movable cylinder 22 can be increased, preventing the movable cylinder 22 from sagging and reducing the load on the telescopic motor 58. Since the auger 58 is not provided, the discharge auger 20 can be made lighter, can be reliably expanded and contracted, swirled, and the like, and can be easily and firmly supported.
Further, in the present invention, since the detection device 72 for detecting the moving body 63 is provided at the start end and the end of the support member 60, the expansion and contraction of the moving cylinder 22 is reliably stopped.
Further, in the present invention, a plurality of guide rollers 70 that are in contact with the outer periphery of the fixed cylinder 21 are attached to the outer periphery of the base side of the movable cylinder 22, and one of the plurality of guide rollers 70 is attached to the outer periphery of the fixed cylinder 21. Since it is located between the two protruding ridges 71 provided on the movable tube 22, the expansion and contraction of the movable cylinder 22 is reliably guided.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine.
FIG. 2 is a side view of a discharge auger.
FIG. 3 is a sectional view of the same.
FIG. 4 is an assembled perspective view of a spiral wing piece.
FIG. 5 is a sectional view of a spiral wing piece.
FIG. 6 is a sectional view showing an example of the assembled state.
FIG. 7 is a sectional view of the same extended state.
FIG. 8 is a view showing a second embodiment of the rotary sliding shaft.
FIG. 9 is a sectional view of the same.
FIG. 10 is a sectional view showing a state where a seal member is provided.
FIG. 11 is an enlarged view of FIG.
FIG. 12 is a sectional view showing a state where a seal member is provided.
FIG. 13 is a perspective view of the same.
FIG. 14 is a view showing another embodiment of a telescopic spiral wing.
FIG. 15 is a side view showing a relationship between a fixed cylinder and a movable cylinder.
FIG. 16 is a side view of the extension mechanism.
FIG. 17 is a cross-sectional view of a moving object.
FIG. 18 is a side view of a guide device of the extension mechanism.
FIG. 19 is a rear view of the same.
FIG. 20 is a view of the second embodiment.
FIG. 21 is a sectional view of the same.
FIG. 22 is a side view of the detection device.
FIG. 23 is an enlarged view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Body frame, 2 ... Traveling device, 3 ... Threshing device, 4 ... Cutting part, 5 ... Weeding body, 6 ... Scraping reel, 7 ... Cutting blade, 8 ... Auger, 9 ... Transport elevator, 10 ... Threshing Chamber, 11: Handling cylinder, 12: Handling net, 13: Wind selection chamber, 14: Swing sorting device, 15: Ventilation fan, 16: No. 1 conveyor, 17: No. 2 conveyor, 18: Glen tank, 19: Lifting Grain mechanism, 20: discharge auger, 21: fixed cylinder, 22: moving cylinder, 24: fixed spiral blade, 25: upper metal, 26: bearing, 27: rotary transmission shaft, 28: different diameter part, 29: boss, 30 ... Hollow shaft, 31 ... Cylinder member, 32 ... Bearing, 35 ... Expandable spiral blade, 36 ... Spiral wing piece, 37 ... Rotary sliding shaft, 38 ... Groove, 39 ... Engaging plate, 40 ... Fit hole, 41 ... Small diameter Collar, 42: fitting hole, 43: boss, 44: large diameter collar, 45: opening, 46: engaging body, 47: spiral Body, 48 ... discharge port, 50 ... bearing, 51 ... grease, 52 ... grease reservoir, 53 ... mounting member, 54 ... cylinder member, 55 ... sealing member, 56 ... sealing member, 58 ... telescopic motor, 59 ... motor mounting Plate, 60: Support member, 61: Bearing member, 62: Rotating screw shaft, 63: Moving body, 64: Spiral groove, 65: Projection, 66: Fitting groove, 67: Guide roller, 68: Guide ridge, 70 ... guide roller, 71 ... ridge, 72 ... detection device, 73 ... mounting plate, 74 ... detection part, 75 ... storage support device.
