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JP3551186B2 - Telescopic discharge auger - Google Patents
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JP3551186B2 - Telescopic discharge auger - Google Patents

Telescopic discharge auger Download PDF

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JP3551186B2
JP3551186B2 JP2002333841A JP2002333841A JP3551186B2 JP 3551186 B2 JP3551186 B2 JP 3551186B2 JP 2002333841 A JP2002333841 A JP 2002333841A JP 2002333841 A JP2002333841 A JP 2002333841A JP 3551186 B2 JP3551186 B2 JP 3551186B2
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cylinder
rotary shaft
movable
moving
distal end
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JP2003143934A (en
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公二 安野
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Iseki and Co Ltd
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Iseki and Co Ltd
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Description

【0001】
【発明の属する技術分野】
この発明は、コンバイン等に設ける伸縮式の排出オ−ガに関するものである。
【0002】
【従来の技術】
従来公知の、特開昭63−279719号公報、実開平1−121340号公報および実開平1−121339号公報には、排出オーガを伸縮可能に構成する技術が開示されている。
【0003】
例えば、特開昭63−279719号公報には、基部側の固定筒に対して排出口を有する先端側の移動筒を長手方向摺動自在に嵌合し、前記固定筒内に螺旋翼を備えた回転軸筒を軸装し、前記移動筒内に移動回転軸を軸装して該移動回転軸の先端部を移動筒内の先端部に設けた軸受に軸受すると共に該移動回転軸に線状部材を空隙を有して螺旋状に巻き掛けて設け、前記回転軸筒の先端側に移動回転軸の基部側を螺合させて構成した伸縮式の排出オ−ガが記載されている。
【0004】
また、実開平1−121340号公報には、基部側の固定筒に対して排出口を有する先端側の移動筒を長手方向摺動自在に嵌合し、前記固定筒内に螺旋翼を備えた回転軸筒を軸装し、前記移動筒内に移動回転軸を軸装して該移動回転軸の先端部を移動筒内の先端部に設けた軸受に軸受すると共に該移動回転軸に螺旋翼を空隙を有して巻き掛けて設け、前記回転軸筒の先端側に移動回転軸の基部側を軸心方向摺動自在且つ相対回転不能に嵌合させて構成した伸縮式の排出オ−ガが記載されている。
【0005】
また、実開平1−121339号公報には、基部側の固定筒に対して排出口を有する先端側の移動筒を長手方向摺動自在に上下段違い状に支持し、前記固定筒内に螺旋翼を備えた回転軸を軸装して該回転軸の先端部を固定筒内の先端部に設けた軸受に軸受し、前記移動筒内に螺旋翼を備えた移動回転軸を軸装して該移動回転軸の先端部を移動筒内の後端部と先端部とに設けた軸受に軸受し、前記回転軸の基部側と移動回転軸の基部側とを軸心方向摺動自在且つ相対回転不能に連動連結した伸縮式の排出オ−ガが記載されている。
【0006】
【発明が解決しようとする課題】
上述の特開昭63−279719号公報に記載された伸縮式の排出オ−ガは、先端側の移動筒内に軸装される移動回転軸に巻き掛けた螺旋状の線状部材が、固定筒内に軸装される回転軸筒に設けた螺旋翼の螺旋ピッチ間に侵入することによって、排出オ−ガを伸縮可能としたものである。このため、この排出オ−ガを伸長させた状態において、先端側の移動筒内における搬送作用は該移動筒内に軸装される移動回転軸に巻き掛けた螺旋状の線状部材の送り作用のみに頼ることとなる。そして、このような螺旋状の線状部材は、移動筒内に占める搬送作用面積が小さいため、螺旋翼に比較して搬送能力が低く、排出オ−ガを伸長させて排出作業を行う場合、筒内において被搬送物の詰まりを生じ易い欠点がある。また、固定筒内に軸装される回転軸筒の先端部が軸受されていないため、特に排出オ−ガを伸長させて排出作業を行う場合に、回転軸筒と移動回転軸との回転軸心のブレが大きくなり、螺旋翼や螺旋状の線状部材が各筒の内面に干渉し易く、円滑な排出作業を行うことができない欠点がある。
【0007】
また、上述の実開平1−121340号公報に記載された伸縮式の排出オ−ガは、先端側の移動筒内に軸装される移動回転軸に巻き掛けた螺旋翼を、固定筒内に軸装される回転軸筒に設けた螺旋翼の螺旋ピッチ間にこの螺旋翼どうしが重合するように侵入させるために、移動回転軸とこの移動回転軸に巻き掛ける螺旋翼との間に空隙が設けられている。従って、排出オ−ガの伸長時において、この先端側の移動筒内に設けられる螺旋翼は、その先端部のみが移動回転軸に固着支持され、その後端部側は自由端であって、回転軸筒に設けられる螺旋翼に重合支持されるだけである。このため、排出作業時において移動回転軸が回転軸筒と共に駆動回転した際に、先端側の移動筒内に設けられる螺旋翼は、この移動回転軸に固着された先端部から駆動力の供給を受けるだけであって、この先端部以外の螺旋翼は、移動回転軸から駆動力の供給を受けることができない。従って、被搬送物を搬送する際に受ける反力によって、この移動筒内に設けられる螺旋翼が変形して螺旋ピッチが変化したり移動回転軸の軸心に対する螺旋翼の外周円の中心位置がずれたりして、円滑な排出作業を行うことができない欠点がある。また、固定筒内に軸装される回転軸筒の先端部が軸受されていないため、特に排出オ−ガを伸長させて排出作業を行う場合に、回転軸筒と移動回転軸との回転軸心のブレが大きくなり、各螺旋翼が各筒の内面に干渉し易く、円滑な排出作業を行うことができない欠点がある。
【0008】
また、上述の実開平1−121339号公報に記載された伸縮式の排出オ−ガは、基部側の固定筒に対して排出口を有する先端側の移動筒が上下段違い状に支持されているため、この排出オ−ガが全体的に大きな構造物となって、例えばこの排出オ−ガをコンバインに搭載した際には、このコンバインの車高が高くなって小型特殊自動車としての法規制に適合させにくくなるような欠点がある。また、固定筒に軸装される回転軸の基部側と移動筒に軸装される移動回転軸の基部側とを連動連結する伝動機構が複雑となって安価に提供できない欠点がある。更に、固定筒及び回転軸に対して、移動筒及び移動回転軸が上下段違い状に配置されるために、排出作業において、被搬送物が固定筒内先端部から移動筒内に流れ込む際に、この移動筒内で回転している移動回転軸の螺旋翼に衝突して被搬送物が損傷し易くなる欠点がある。
【0009】
【課題を解決するための手段】
この発明は、上述の如き課題を解決するために、以下のような技術的手段を講じる。
即ち、基部側の固定筒21に対して排出口32を有する先端側の移動筒22を長手方向摺動自在に嵌合し、前記固定筒21内に螺旋翼24を備えた回転軸筒23を軸装して該回転軸筒23の先端部を固定筒21内の先端部に設けた軸受25に軸受し、前記移動筒22内に移動回転軸27を軸装して該移動回転軸27の先端部を移動筒22内の先端部に設けた軸受28に軸受すると共に該移動回転軸27に弾性部材より形成した螺旋翼31を備えた複数のボス29を軸心方向摺動自在に設け、該複数のボス29は移動回転軸27と共に回転可能に構成し、前記回転軸筒23の先端側に移動回転軸27の基部側を軸心方向摺動自在に設け、該移動回転軸27は回転軸筒23と共に回転可能に構成し、前記ボス29の軸心方向の長さは前記螺旋翼31の1ピッチの長さよりも短く構成し、さらに、前記移動筒22が長手方向に伸長するほど移動筒22内の搬送能力が向上するように構成したことを特徴とする伸縮式の排出オ−ガの構成としたものである。
【0010】
これにより、基部側の固定筒21内に軸装された回転軸筒23を駆動回転させると、先端側の移動筒22内に軸装された移動回転軸27が該回転軸筒23と一体回転し、該回転軸筒23の螺旋翼24と移動回転軸27上の複数のボス29に備えた螺旋翼31とが回転して被搬送物の搬送が行なわれ、この被搬送物は基部側の固定筒21内から先端側の移動筒22内を経て該移動筒22の排出口32から外部へ排出される。
【0011】
このような排出作業に際し、基部側の固定筒21に対して先端側の移動筒22を長手方向に摺動させて排出オ−ガを伸縮させ、該移動筒22の排出口32の位置を変更することができる。
そして、例えば、排出オ−ガを伸長させる場合、固定筒21に対して移動筒22を遠ざかる方向に摺動させると、移動筒22内に軸装された移動回転軸27の基部側が、固定筒21内に軸装された回転軸筒23の先端側から抜け出す方向へ摺動する。
【0012】
この際、移動回転軸27の基部側と回転軸筒23の先端側とは相対回転不能の状態を維持するため、回転軸筒23を駆動回転させることによって移動回転軸27も一体回転する。
また、移動回転軸27上に嵌合した複数のボス29は、この排出オ−ガの伸長に際して移動回転軸27上を摺動することとなるが、これら複数のボス29は移動回転軸27に対して相対回転不能の状態を維持するため、移動回転軸27の回転によってこれら複数のボス29も一体回転する。
【0013】
また、このように排出オ−ガを伸長させた状態においても、移動回転軸27の先端部が移動筒22内の先端部に設けた軸受28に軸受され、且つ、回転軸筒23の先端部が固定筒21内の先端部に設けた軸受25に軸受されているため、これら移動回転軸27および回転軸筒23の回転軸心のブレが少なくなる。
【0014】
また、弾性部材より形成した螺旋翼31は、移動筒22が縮少している状態であっても、伸長している状態であっても、継ぎ目の無い連続螺旋からなっているので、穀粒は安定して連続的に搬送されていく。そして、移動筒22が伸長すると、弾性部材より形成した螺旋翼31の螺旋ピッチが長くなることで穀粒の搬送能力が上昇する。
【0015】
【発明の効果】
この発明によると、排出オ−ガを伸縮させて排出作業位置を該排出オ−ガの長手方向に調節することができるものでありながら、この排出オ−ガを伸長させた状態においても、移動回転軸27の先端部を移動筒22内の先端部に設けた軸受28に軸受し且つ回転軸筒23の先端部を固定筒21内の先端部に設けた軸受25に軸受することによって、これら移動回転軸27および回転軸筒23の回転軸心のブレを少なくしてこれら移動回転軸27および回転軸筒23に備える螺旋翼31,24による被搬送物の搬送を円滑に行うことができ、排出作業の能率を向上させることができる。
【0016】
また、先端側の移動筒22内に設ける螺旋翼31は、移動回転軸27から該移動回転軸27に軸心方向摺動自在且つ相対回転不能に嵌合した複数のボス29を介して駆動されるため、被搬送物を搬送する際に受ける反力によって、この螺旋翼31が変形して螺旋ピッチが変化したり移動回転軸27の軸心に対する螺旋翼31の外周円の中心位置がずれたりしにくく、該螺旋翼31による被搬送物の搬送を円滑に行うことができ、排出作業の能率を向上させることができる。
【0017】
また、基部側の固定筒21及び回転軸筒23に対して、先端側の移動筒22及び移動回転軸27を同一軸心上で摺動させることによって排出オ−ガを伸縮させるものであるため、上述の従来技術のように基部側の固定筒に対して先端側の移動筒を上下段違い状に支持する構成に比較して、この排出オ−ガを全体的にコンパクトに構成できるうえに、基部側の固定筒21内に軸装される回転軸筒23の螺旋翼24から先端側の移動筒22内に軸装される移動回転軸27の螺旋翼31への被搬送物の引継ぎを円滑に行うことができ、この被搬送物の損傷を少なくすることができる。
【0018】
また、弾性部材より形成した螺旋翼31は、移動筒22が縮少している状態であっても、伸長している状態であっても、継ぎ目の無い連続螺旋からなっているので、穀粒は安定して連続的に搬送されていく。従って、穀粒の脱っぷが少なくなり、回収した穀粒の品質低下を防止できるようになる。
【0019】
また、移動筒22が伸長すると、弾性部材より形成した螺旋翼31の螺旋ピッチが長くなることで穀粒の搬送能力が上昇する。従って、コンバインから遠い場所への排出時において、詰まり等を防止できるようになる。
【0020】
【発明の実施の形態】
本発明の実施の形態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である。
【0021】
5は前記刈取部4の最先端位置に設けた分草体、6は分草体5の上方に設けた掻込リール、7は掻込リール6の下方に設けた刈刃、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が形成される。11は脱穀室10内に軸装される扱胴、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。
【0022】
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には該グレンタンク18内の穀物を揚穀する揚穀機構19の下部を取付け、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の一端(基部)を取付ける。排出オーガ20は、図示は省略するが、排出オーガ20の他端(先端)が、シリンダ等の旋回機構により前記揚穀機構19の軸心を中心に水平回転自在であって、かつ、オーガ上下シリンダ等の上下動機構により上下動自在に前記揚穀機構19に取付けられる。
【0023】
しかして、前記排出オーガ20は、一端側(基部側)の固定筒21と他端側(先端側)の移動筒22とに分割形成し、移動筒22の基端部を固定筒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て排出オーガ20全体長を伸縮させるように形成する。
【0024】
図2において、23は前記固定筒内に軸装した回転軸筒、24は該回転軸筒23の外周に位置不動に固定した固定螺旋翼(螺旋翼)である。前記回転軸筒23の先端部は前記固定筒内の先端部に設けた軸受25により支持される。
前記回転軸筒23内の先端部には、スプラインボス26を固定する。該スプラインボス26には移動回転軸27の基端部を挿入係合させる。移動回転軸27の先端部は前記移動筒22内の先端部に設けた軸受28に軸支する。
【0025】
前記移動回転軸27の外周には、該移動回転軸27の軸心方向に摺動のみ自在にボス29を複数嵌合させる。ボス29は移動回転軸27の外周に形成したスプライン突条30に係合させる。スプライン突条30は前記スプラインボス26に係合させ、前記移動回転軸27およびボス29を回転軸筒23と共に回転させる。 前記ボス29には弾性部材により形成した伸縮螺旋翼(螺旋翼)31を固定する。32は移動筒22の先端部下面に形成した排出口、33は排出口32の上部の移動回転軸27に固定した排出体である。
【0026】
34は移動筒22を伸縮させる伸縮装置であり、本実施例では伸縮用シリンダにより構成され、該伸縮用シリンダ34の基部は前記固定筒21の外面に固定し、伸縮用シリンダ34のロッド35の先端を移動筒22の基端部外面に取付ける。 図1において、36は脱穀装置3の前側側部に設けた運転席、37は運転席36に設けた手動伸縮スイッチ(手動伸縮操作具)である。該手動伸縮スイッチ37は前記伸縮用シリンダ34のソレノイドバルブ38を、「伸長」、「停止」、「短縮」、に切替える(図4)。39は伸長ソレノイド、40は短縮ソレノイドである。
【0027】
前記伸縮用シリンダ34には排出オーガ20の長さを検知する検知手段43を設け、検知手段43は伸縮用シリンダ34のロッド35によりオン・オフされる最伸長位置検知スイッチ44と最短縮位置検知スイッチ45とにより構成される。 しかして、運転席36の側部には、排出オーガ20の移動筒22の途中部分を支持する格納支持装置41が設けられており、前記格納支持装置41の近傍には格納スイッチ42を設ける。該格納スイッチ42と検知手段43と伸縮用シリンダ34とを接続し、格納スイッチ42は、移動筒22が伸長状態で格納支持装置41に支持されると、自動的にソレノイドバルブ38の短縮ソレノイド40をオンにして、伸縮用シリンダ34を自動的に短縮させる。
【0028】
即ち、排出オーガ20が伸長状態では最短縮位置検知スイッチ45がオフになっており、この移動筒22が伸長状態で格納支持装置41に支持されると、格納スイッチ42はオンになり伸縮用シリンダ34を自動的に短縮させる。
なお、前記手動伸縮スイッチ37は前記格納スイッチ42に優先させる。
【0029】
図5は、第2実施例であり、運転席36には排出オーガ20のクラッチを入切させる排出オーガクラッチ操作レバー47を設け、排出オーガクラッチ操作レバー47の近傍にクラッチ入感知スイッチ46を設ける。
クラッチ入感知スイッチ46は、排出オーガクラッチ操作レバー47を切操作するとオンになり、伸縮用シリンダ34を短縮させて、移動筒22を短縮させる。 図6は排出オーガ20の他の実施例であり、伸縮螺旋翼31を伸縮螺旋翼31aおよび伸縮螺旋翼31bの二条螺旋に形成し、伸縮螺旋翼31aおよび伸縮螺旋翼31bは、それぞれ形状記憶合金により形成する。伸縮螺旋翼31aは、成形時には、大ピッチに形成し、伸縮螺旋翼31bは、成形時小ピッチに形成される。
【0030】
そして、伸縮螺旋翼31aに通電すると、伸縮螺旋翼31aが元の大ピッチに復元して移動筒22を伸長させ、伸縮螺旋翼31bに通電すると、伸縮螺旋翼31bが元の小ピッチに復元して移動筒22を短縮させる。したがって、伸縮螺旋翼31aおよび伸縮螺旋翼31bの基端部を固定してあるボス29は移動回転軸27に固定されている。
【0031】
次に作用を述べる。
本発明は前記の構成であり、運転席36の側部の格納支持装置41に短縮状態の排出オーガ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い、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。
【0032】
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32は任意の位置に位置する。次に、手動伸縮スイッチ37を操作してソレノイドバルブ38の伸長ソレノイド39をオンにすると、伸縮用シリンダ34のロッド35が伸長し、移動筒22が固定筒21に対して伸長して、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。
【0033】
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内の穀物を揚穀し、揚穀された穀物は回転する回転軸筒23の固定螺旋翼24により搬送される。
回転軸筒23の回転により移動筒22内の移動回転軸27が回転し、ボス29を回転させ、各ボス29に固定されている伸縮螺旋翼31が回転するので、固定筒21から移動筒22を通って伸縮螺旋翼31により搬送され、排出口32より軽トラックのタンクに排出する。
【0034】
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41に支持させて格納し、次の脱穀作業に備えるが、このとき、移動筒22の短縮を忘れることがある。
そこで、伸縮用シリンダ34には検知手段43を設け、伸縮用シリンダ34内には、最伸長位置検知スイッチ44と最短縮位置検知スイッチ45とが設けられ、格納支持装置41の近傍には格納スイッチ42が設けられているから、排出作業終了後、排出オーガ20が伸長状態で格納支持装置41に格納すると、最短縮位置検知スイッチ45がオフのままであるので、格納スイッチ42はオンになり伸縮用シリンダ34を自動的に短縮させ、最短縮位置検知スイッチ45がオンになると、伸縮用シリンダ34の短縮を自動的に停止させる。
【0035】
しかして、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。
図5の第2実施例では、運転席36にクラッチ入感知スイッチ46が設けられ、クラッチ入感知スイッチ46は排出オーガクラッチ操作レバー47を切操作するとオンになって、自動的にソレノイドバルブ38の短縮ソレノイド40をオンにし、自動的に伸縮用シリンダ34を短縮させて移動筒22を短縮させ、移動筒22が最短縮位置に至ると、最短縮位置検知スイッチ45が伸縮用シリンダ34の短縮を停止させ、移動筒22の短縮させることの忘れを防止する。
【0036】
なお、排出オーガクラッチ操作レバー47を切操作したときクラッチ入感知スイッチはオンになるが、手動伸縮スイッチ37とクラッチ入感知スイッチ46との関係は手動伸縮スイッチ37が優先しており、手動伸縮スイッチ37による移動筒22の位置合せ中は、排出オーガクラッチ操作レバー47を切にしていても手動伸縮スイッチ37により移動筒22を伸縮可能であるから、支障はない。
【0037】
また、排出作業中はクラッチ入感知スイッチがオフであり、排出作業が終了して、次の脱穀作業を行なうときに、排出オーガクラッチ操作レバー47を切操作するとクラッチ入感知スイッチがオンになるから、自動的に移動筒22を短縮させる。それゆえ、安全かつ円滑に排出オーガ20を格納できる。
【0038】
図6の実施例では、伸縮螺旋翼31を伸縮螺旋翼31aおよび伸縮螺旋翼31bの二条螺旋に形成し、伸縮螺旋翼31aおよび伸縮螺旋翼31bは、それぞれ形状記憶合金により形成し、伸縮螺旋翼31aは成形時大ピッチに形成し、伸縮螺旋翼31bは成形時小ピッチに形成してあるから、伸縮螺旋翼31aに通電して加熱すると、伸縮螺旋翼31aは元の大ピッチに復元して移動筒22を伸長させ、伸縮螺旋翼31bに通電して加熱すると、伸縮螺旋翼31bが元の小ピッチに復元して移動筒22を短縮させ、伸縮螺旋翼31aおよび伸縮螺旋翼31bのいずれか一方に通電することにより移動筒22を伸縮させて位置合わせを行なう。 そして、前記格納スイッチ42がオンになると、伸縮螺旋翼31bに通電させて自動的に移動筒22を短縮させる。
【図面の簡単な説明】
【図1】この発明の実施の形態におけるコンバインの全体側面図である。
【図2】この発明の実施の形態における伸長状態の要部の縦断側面図である。
【図3】この発明の実施の形態における短縮状態の要部の縦断側面図である。
【図4】この発明の実施の形態における回路図である。
【図5】この発明の実施の形態における第2実施例のコンバインの全体側面図である。
【図6】この発明の実施の形態における第3実施例の要部の縦断側面図である。
【図7】この発明の実施の形態における説明図である。
【図8】この発明に実施の形態における説明図である。
【符号の説明】
21 固定筒
22 移動筒
23 回転軸筒
24 固定螺旋翼(螺旋翼)
25 軸受
27 移動回転軸
28 軸受
29 ボス
31 伸縮螺旋翼(螺旋翼)
32 排出口
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a telescopic discharge auger provided in a combine or the like.
[0002]
[Prior art]
Japanese Patent Laid-Open Publication No. 63-279719, Japanese Utility Model Laid-Open No. 1-121340, and Japanese Utility Model Laid-Open No. 1-112339 disclose a technique of making a discharge auger extendable.
[0003]
For example, Japanese Unexamined Patent Publication No. 63-279719 discloses that a moving cylinder on the distal end side having a discharge port is slidably fitted in a longitudinal direction in a fixed cylinder on a base side, and a spiral blade is provided in the fixed cylinder. The movable rotary shaft is mounted in the movable barrel, the movable rotary shaft is mounted in the movable barrel, and the distal end of the movable rotary shaft is supported by a bearing provided at the distal end in the movable barrel. A telescopic discharge auger is described in which a helical member is spirally wound with a gap, and a base portion of a moving rotary shaft is screwed to a tip end of the rotary shaft cylinder.
[0004]
In Japanese Utility Model Laid-Open Publication No. 1-121340, a moving cylinder on the distal end side having a discharge port is fitted slidably in the longitudinal direction with a fixed cylinder on the base side, and a spiral blade is provided in the fixed cylinder. A rotary shaft cylinder is axially mounted, a movable rotary shaft is axially mounted in the movable cylinder, and a distal end of the movable rotary shaft is supported by a bearing provided at a distal end in the movable cylinder, and a spiral blade is attached to the movable rotary shaft. And a retractable discharge auger constructed by fitting the base of the moving rotary shaft in the axial direction slidably and non-rotatably with the distal end side of the rotary shaft cylinder. Is described.
[0005]
Japanese Utility Model Laid-Open Publication No. 1-121339 discloses that a movable cylinder on the distal end side having a discharge port is vertically slidably supported on a fixed cylinder on the base side so as to be slidable in the longitudinal direction. A rotating shaft provided with a shaft is provided, and a distal end of the rotating shaft is mounted on a bearing provided at a leading end in a fixed cylinder, and a movable rotating shaft provided with a spiral blade in the movable cylinder is fitted. The front end of the moving rotary shaft is supported by bearings provided at the rear end and the front end in the moving cylinder, and the base side of the rotary shaft and the base side of the moving rotary shaft are slidable in the axial direction and relatively rotated. A telescopic discharge auger that is operatively linked is described.
[0006]
[Problems to be solved by the invention]
The telescopic discharge auger described in the above-mentioned Japanese Patent Application Laid-Open No. 63-279719 has a spiral linear member wound around a movable rotary shaft mounted in a movable cylinder on the distal end side. The discharge auger can be extended and contracted by invading between the spiral pitches of the spiral blades provided on the rotary shaft cylinder mounted in the cylinder. For this reason, in a state where the discharge auger is extended, the conveying action in the moving cylinder on the distal end side is the feeding action of the helical linear member wound around the moving rotating shaft mounted in the moving cylinder. Only rely on. Since such a spiral linear member has a small conveying action area in the moving cylinder, the conveying capacity is lower than that of the spiral blade, and when performing the discharging operation by extending the discharging auger, There is a disadvantage that the transported object is easily clogged in the cylinder. Also, since the distal end of the rotary shaft cylinder mounted in the fixed cylinder is not bearing, especially when the discharge auger is extended to perform the discharge operation, the rotary shaft between the rotary shaft cylinder and the movable rotary shaft is used. There is a disadvantage that the blurring of the heart increases, and the spiral wings and the spiral linear members easily interfere with the inner surfaces of the respective cylinders, so that a smooth discharge operation cannot be performed.
[0007]
The telescopic discharge auger described in the above-mentioned Japanese Utility Model Laid-Open Publication No. 1-121340 discloses a fixed-cylinder in which a spiral wing wound around a movable rotary shaft mounted in a movable cylinder on the distal end side is provided in a fixed cylinder. In order to make the spiral blades penetrate so as to overlap each other between the spiral pitches of the spiral blades provided on the rotating shaft cylinder mounted on the shaft, a gap is formed between the moving rotary shaft and the spiral blade wound around the moving rotary shaft. Is provided. Therefore, when the discharge auger is extended, only the tip of the spiral wing provided in the moving cylinder on the tip side is fixedly supported by the moving rotary shaft, and the rear end is a free end, and It is merely supported by a spiral blade provided on the barrel. For this reason, when the moving rotary shaft is driven to rotate together with the rotary shaft cylinder during the discharging operation, the spiral wing provided in the moving cylinder on the distal end side supplies the driving force from the distal end portion fixed to the moving rotary shaft. The spiral wing other than the tip cannot receive the driving force from the moving rotary shaft. Therefore, the spiral blade provided in the moving cylinder is deformed due to the reaction force received when the object is conveyed, the spiral pitch changes, and the center position of the outer circumferential circle of the spiral blade with respect to the axis of the moving rotary shaft is changed. There is a drawback that a smooth discharge operation cannot be performed due to deviation. Also, since the distal end of the rotary shaft cylinder mounted in the fixed cylinder is not bearing, especially when the discharge auger is extended to perform the discharge operation, the rotary shaft between the rotary shaft cylinder and the movable rotary shaft is used. There is a drawback that the displacement of the heart becomes large, and each spiral wing easily interferes with the inner surface of each cylinder, so that a smooth discharge operation cannot be performed.
[0008]
In the telescopic discharge auger described in the above-mentioned Japanese Utility Model Laid-Open Publication No. 1-121339, a moving cylinder on the distal end side having a discharge port is supported in a vertically different shape with respect to a fixed cylinder on the base side. Therefore, this exhaust auger becomes a large structure as a whole. For example, when this exhaust auger is mounted on a combine, the height of the combine becomes high, and the regulation as a small special vehicle is required. There are drawbacks that make it difficult to adapt. Further, there is a disadvantage that a transmission mechanism for interlockingly connecting the base side of the rotary shaft mounted on the fixed barrel and the base side of the movable rotary shaft mounted on the movable barrel becomes complicated and cannot be provided at low cost. Further, with respect to the fixed cylinder and the rotation axis, since the moving cylinder and the moving rotation axis are arranged in a vertically different shape, in the discharging operation, when the conveyed object flows into the moving cylinder from the front end of the fixed cylinder, There is a disadvantage that the transferred object is easily damaged by colliding with the spiral wing of the moving rotary shaft rotating in the moving cylinder.
[0009]
[Means for Solving the Problems]
The present invention employs the following technical means in order to solve the above-mentioned problems.
That is, the moving cylinder 22 on the distal end side having the discharge port 32 is slidably fitted to the fixed cylinder 21 on the base side in the longitudinal direction, and the rotating shaft cylinder 23 having the spiral blade 24 inside the fixed cylinder 21 is moved. The rotary shaft barrel 23 is mounted on a shaft, and the distal end of the rotary shaft barrel 23 is supported on a bearing 25 provided at the distal end of the fixed barrel 21. A plurality of bosses 29 having a spiral wing 31 formed of an elastic member are provided on the movable rotary shaft 27 so as to be slidable in the axial direction, while the distal end is supported by a bearing 28 provided at the distal end in the movable cylinder 22. The plurality of bosses 29 are configured to be rotatable together with the moving rotary shaft 27, and the base side of the moving rotary shaft 27 is slidably provided in the distal end side of the rotary shaft barrel 23 in the axial direction. The boss 29 is configured to be rotatable together with the shaft cylinder 23, and the length of the boss 29 in the axial direction is the same as that of the spiral blade 3. Of shorter configuration than the length of one pitch, further telescoping discharge Oh, characterized in that the movable cylinder 22 is configured to improve the carrying capacity of the mobile cylinder 22 as extending longitudinally - moth This is the configuration.
[0010]
Accordingly, when the rotating shaft barrel 23 mounted in the fixed barrel 21 on the base side is driven to rotate, the moving rotating shaft 27 mounted in the moving barrel 22 on the distal end side rotates integrally with the rotating barrel 23. Then, the spiral wings 24 of the rotary shaft cylinder 23 and the spiral wings 31 provided on the plurality of bosses 29 on the moving rotary shaft 27 rotate to convey the object to be conveyed. The moving cylinder 22 is discharged from the fixed cylinder 21 to the outside through the outlet 32 of the moving cylinder 22 through the moving cylinder 22 on the distal end side.
[0011]
In such a discharging operation, the moving cylinder 22 on the distal end side is slid in the longitudinal direction with respect to the fixed cylinder 21 on the base side to expand and contract the discharging auger, and the position of the discharge port 32 of the moving cylinder 22 is changed. can do.
For example, when the discharge auger is extended, when the movable cylinder 22 is slid in a direction away from the fixed cylinder 21, the base side of the movable rotary shaft 27 mounted in the movable cylinder 22 is fixed. The sliding shaft 21 slides in a direction to come out from the tip side of the rotary shaft cylinder 23 mounted in the shaft 21.
[0012]
At this time, in order to maintain a state in which the base side of the moving rotary shaft 27 and the distal end side of the rotary shaft tube 23 cannot rotate relative to each other, the rotary shaft tube 23 is driven to rotate, so that the moving rotary shaft 27 also rotates integrally.
The plurality of bosses 29 fitted on the moving rotary shaft 27 slide on the moving rotary shaft 27 when the discharge auger is extended. On the other hand, in order to maintain a state in which relative rotation is impossible, the plurality of bosses 29 are also integrally rotated by rotation of the moving rotation shaft 27.
[0013]
Even in the state where the discharge auger is extended in this manner, the distal end of the moving rotary shaft 27 is supported by the bearing 28 provided at the distal end in the movable barrel 22, and the distal end of the rotary shaft barrel 23. Are supported by bearings 25 provided at the distal end in the fixed cylinder 21, so that the rotational axes of the moving rotary shaft 27 and the rotary shaft cylinder 23 are less likely to shake.
[0014]
Further, the spiral blade 31 formed of the elastic member is formed of a continuous spiral without any seam even when the moving cylinder 22 is in a contracted state or in an extended state. It is transported stably and continuously. When the movable cylinder 22 is extended, the spiral pitch of the spiral blade 31 formed of the elastic member is increased, so that the grain conveying capacity is increased.
[0015]
【The invention's effect】
According to the present invention, while the discharge auger can be extended and contracted to adjust the discharge operation position in the longitudinal direction of the discharge auger, the discharge auger can be moved even when the discharge auger is extended. By bearing the tip of the rotating shaft 27 on a bearing 28 provided at the tip of the movable barrel 22 and bearing the tip of the rotating barrel 23 on a bearing 25 provided at the tip of the fixed barrel 21, The movement of the transported object by the spiral wings 31 and 24 provided on the moving rotating shaft 27 and the rotating shaft tube 23 can be performed smoothly by reducing the deviation of the rotating shaft centers of the moving rotating shaft 27 and the rotating shaft tube 23. The efficiency of the discharging operation can be improved.
[0016]
The helical wing 31 provided in the movable cylinder 22 on the distal end side is driven from the movable rotary shaft 27 via a plurality of bosses 29 fitted to the movable rotary shaft 27 so as to be slidable in the axial direction and relatively non-rotatable. Therefore, the spiral blade 31 is deformed by the reaction force received when the object is transported, and the spiral pitch changes, or the center position of the outer circumferential circle of the spiral blade 31 with respect to the axis of the moving rotary shaft 27 is shifted. It is difficult to carry out the transfer of the conveyed object by the spiral wing 31, and the efficiency of the discharging operation can be improved.
[0017]
Further, the discharge auger is expanded and contracted by sliding the moving cylinder 22 and the moving rotary shaft 27 on the distal end side on the same axis with respect to the fixed cylinder 21 and the rotating shaft cylinder 23 on the base side. Compared with the above-described prior art, in which the moving cylinder on the distal end side is supported in a vertically different manner with respect to the fixed cylinder on the base side, this discharge auger can be configured to be compact as a whole. The transfer of the transferred object from the spiral blade 24 of the rotary shaft barrel 23 mounted in the fixed cylinder 21 on the base side to the spiral blade 31 of the movable rotary shaft 27 mounted in the movable barrel 22 on the distal end side is smoothly performed. The damage to the transported object can be reduced.
[0018]
Further, the spiral blade 31 formed of the elastic member is formed of a continuous spiral without any seam even when the moving cylinder 22 is in a contracted state or in an extended state. It is transported stably and continuously. Therefore, the detachment of the grains is reduced, and the quality of the collected grains can be prevented from lowering.
[0019]
In addition, when the movable cylinder 22 is extended, the spiral pitch of the spiral blade 31 formed of the elastic member becomes longer, so that the grain conveying capacity is increased. Therefore, clogging or the like can be prevented when discharging to a place far from the combine.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
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 provided at a position above the body frame 1. The device 4 is a mowing unit provided at a position in front of the body frame 1.
[0021]
Reference numeral 5 denotes a weeding body provided at the foremost position of the cutting unit 4, 6 denotes a raking reel provided above the weeding body 5, 7 denotes a cutting blade provided below the raiding reel 6, and 8 denotes a cut grain. An auger 9 for collecting culms is a transport elevator provided at a rear portion 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 drum 11, reference numeral 13 denotes a wind selection chamber formed below the threshing room 10, and reference numeral 14 denotes the wind selection chamber. A swing sorting device provided in 13, a blower fan 15 for blowing into the wind selection chamber 13, a first conveyor 16 and a second conveyor 17 are provided.
[0022]
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 lower part of a frying mechanism 19 for frying the grains in the Glen tank 18 is attached to the Glen tank 18, and one end (base) of a discharge auger 20 for discharging the fried grains is mounted on an upper part of the frying mechanism 19. Attach. Although not shown, the discharge auger 20 is configured such that the other end (tip) of the discharge auger 20 is horizontally rotatable around the axis of the frying mechanism 19 by a turning mechanism such as a cylinder, and A vertically movable mechanism such as a cylinder is attached to the frying mechanism 19 so as to be vertically movable.
[0023]
The discharge auger 20 is divided into a fixed cylinder 21 on one end side (base side) and a movable cylinder 22 on the other end side (distal end side). The movable barrel 22 is configured to be movable in the transport direction with respect to the fixed barrel 21 so as to extend and contract the entire length of the discharge auger 20.
[0024]
In FIG. 2, reference numeral 23 denotes a rotating shaft barrel mounted in the fixed barrel, and 24 denotes a fixed spiral blade (spiral blade) fixedly fixed on the outer periphery of the rotating barrel 23. The distal end of the rotary barrel 23 is supported by a bearing 25 provided at the distal end in the fixed barrel.
A spline boss 26 is fixed to a tip portion in the rotary shaft cylinder 23. The base end of the moving rotary shaft 27 is inserted into and engaged with the spline boss 26. The distal end of the movable rotary shaft 27 is supported by a bearing 28 provided at the distal end in the movable cylinder 22.
[0025]
A plurality of bosses 29 are fitted around the outer periphery of the movable rotary shaft 27 so as to be slidable only in the axial direction of the movable rotary shaft 27. The boss 29 is engaged with a spline ridge 30 formed on the outer periphery of the moving rotary shaft 27. The spline ridge 30 is engaged with the spline boss 26, and rotates the moving rotary shaft 27 and the boss 29 together with the rotary shaft cylinder 23. A telescopic spiral wing (spiral wing) 31 formed of an elastic member is fixed to the boss 29. Reference numeral 32 denotes a discharge port formed on the lower surface of the distal end portion of the movable cylinder 22, and reference numeral 33 denotes a discharge body fixed to the movable rotary shaft 27 above the discharge port 32.
[0026]
Reference numeral 34 denotes a telescopic device that expands and contracts the movable cylinder 22. In this embodiment, the telescopic device is constituted by a telescopic cylinder. The base of the telescopic cylinder 34 is fixed to the outer surface of the fixed cylinder 21. The distal end is attached to the outer surface of the base end of the movable cylinder 22. In FIG. 1, reference numeral 36 denotes a driver's seat provided on the front side of the threshing device 3, and reference numeral 37 denotes a manual expansion / contraction switch (manual expansion / contraction operating tool) provided on the driver's seat 36. The manual expansion / contraction switch 37 switches the solenoid valve 38 of the expansion / contraction cylinder 34 to “extend”, “stop”, or “short” (FIG. 4). 39 is an extension solenoid, and 40 is a shortening solenoid.
[0027]
The telescopic cylinder 34 is provided with a detecting means 43 for detecting the length of the discharge auger 20, and the detecting means 43 detects a most extended position detecting switch 44 which is turned on / off by a rod 35 of the telescopic cylinder 34 and a most shortened position. And a switch 45. A storage support device 41 for supporting the middle portion of the moving cylinder 22 of the discharge auger 20 is provided on the side of the driver's seat 36, and a storage switch 42 is provided near the storage support device 41. The retract switch 42 is connected to the retractable switch 42, the detecting means 43, and the telescopic cylinder 34. When the movable cylinder 22 is extended and supported by the retractable support device 41, the retractable solenoid 40 of the solenoid valve 38 is automatically turned on. Is turned on to automatically shorten the telescopic cylinder 34.
[0028]
That is, when the discharge auger 20 is in the extended state, the shortest position detection switch 45 is off. When the movable cylinder 22 is supported by the storage support device 41 in the extended state, the storage switch 42 is turned on and the retractable cylinder is turned on. 34 is automatically shortened.
Note that the manual expansion / contraction switch 37 is prioritized over the storage switch 42.
[0029]
FIG. 5 shows a second embodiment in which a driver seat 36 is provided with a discharge auger clutch operation lever 47 for engaging and disengaging the clutch of the discharge auger 20, and a clutch engagement detection switch 46 is provided near the discharge auger clutch operation lever 47. .
The clutch engagement detection switch 46 is turned on when the discharge auger clutch operation lever 47 is turned off, thereby shortening the telescopic cylinder 34 and shortening the movable cylinder 22. FIG. 6 shows another embodiment of the discharge auger 20, in which the telescopic spiral wing 31 is formed as a double spiral of a telescopic spiral wing 31a and a telescopic spiral wing 31b, and the telescopic spiral wing 31a and the telescopic spiral wing 31b are each made of a shape memory alloy. Formed by The telescopic spiral blade 31a is formed at a large pitch during molding, and the telescopic spiral blade 31b is formed at a small pitch during molding.
[0030]
When the telescopic spiral wing 31a is energized, the telescopic spiral wing 31a is restored to the original large pitch and the movable cylinder 22 is extended, and when the telescopic spiral wing 31b is energized, the telescopic spiral wing 31b is restored to the original small pitch. The moving cylinder 22 is shortened. Therefore, the boss 29 to which the base ends of the telescopic spiral blade 31a and the telescopic spiral blade 31b are fixed is fixed to the moving rotary shaft 27.
[0031]
Next, the operation will be described.
The present invention is configured as described above, and travels with the storage support device 41 on the side of the driver's seat 36 supporting the middle portion of the movable cylinder 22 of the discharge auger 20 in the shortened state, and when arriving at the field, the aircraft is advanced. , The culm is raked by the raking reel 6, the culm is cut by sliding the cutting blade 7, the culm is supplied to the threshing device 3, and threshing is performed in the threshing device 3. When a certain amount of grain is threshed in the Glen tank 18 by cutting and threshing, the aircraft is moved to a standby light truck near the field.
[0032]
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 32 of the movable cylinder 22 is moved to an arbitrary position. To position. Next, when the extension solenoid 39 of the solenoid valve 38 is turned on by operating the manual expansion / contraction switch 37, the rod 35 of the expansion / contraction cylinder 34 extends, and the movable cylinder 22 extends with respect to the fixed cylinder 21. 22 is located at the position above the tank of the light truck.
[0033]
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, and the fried grains are fixed spiral blades 24 of the rotating rotary barrel 23. Transported by
The rotation of the rotating shaft tube 23 rotates the moving rotation shaft 27 in the moving tube 22 to rotate the bosses 29, and the telescopic spiral blades 31 fixed to the bosses 29 rotate. And is conveyed by the telescopic spiral wings 31 and discharged from the discharge port 32 to the tank of the light truck.
[0034]
When the above operation is completed and the inside of the Glen tank 18 becomes empty, the middle part of the moving cylinder 22 of the discharge auger 20 is stored and supported by the storage support device 41 to prepare for the next threshing operation. In some cases, the user may forget to shorten the moving cylinder 22.
Therefore, a detecting means 43 is provided on the telescopic cylinder 34, and a maximum extension position detection switch 44 and a minimum contraction position detection switch 45 are provided in the telescopic cylinder 34, and a storage switch is provided near the storage support device 41. When the discharge auger 20 is stored in the storage support device 41 in the extended state after the discharge operation, the shortest position detection switch 45 remains off, and the storage switch 42 is turned on to extend and retract. When the shortest position detecting switch 45 is turned on, the shortening of the telescopic cylinder 34 is automatically stopped.
[0035]
When the discharge auger 20 is stored and the discharge operation of the reaping work grain is completed, the reaping and threshing operation and the discharge operation are repeated as described above.
In the second embodiment shown in FIG. 5, a clutch engagement detection switch 46 is provided in the driver's seat 36. The clutch engagement detection switch 46 is turned on when the discharge auger clutch operation lever 47 is turned off, and the solenoid valve 38 is automatically turned on. When the shortening solenoid 40 is turned on, the movable cylinder 22 is shortened by automatically shortening the telescopic cylinder 34, and when the movable cylinder 22 reaches the shortest position, the shortest position detecting switch 45 causes the telescopic cylinder 34 to shorten. The moving cylinder 22 is stopped to prevent the moving cylinder 22 from being forgotten to be shortened.
[0036]
When the discharge auger clutch operation lever 47 is turned off, the clutch engagement detection switch is turned on. However, the manual expansion switch 37 has priority over the manual expansion switch 37 and the clutch engagement detection switch 46. During positioning of the movable cylinder 22 by the 37, the movable cylinder 22 can be extended and contracted by the manual extension switch 37 even when the discharge auger clutch operation lever 47 is turned off, so that there is no problem.
[0037]
Also, during the discharging operation, the clutch engagement detection switch is off, and when the discharging operation is completed and the next threshing operation is performed, the clutch engagement detection switch is turned on when the discharge auger clutch operation lever 47 is turned off. The moving cylinder 22 is automatically shortened. Therefore, the discharge auger 20 can be stored safely and smoothly.
[0038]
In the embodiment of FIG. 6, the telescopic spiral wing 31 is formed as a double spiral of a telescopic spiral wing 31a and a telescopic spiral wing 31b, and the telescopic spiral wing 31a and the telescopic spiral wing 31b are each formed of a shape memory alloy. 31a is formed at a large pitch at the time of molding, and the telescopic spiral wing 31b is formed at a small pitch at the time of molding. When the movable cylinder 22 is extended and energized and heated to the telescopic spiral wing 31b, the telescopic spiral wing 31b is restored to the original small pitch to shorten the movable cylinder 22, and one of the telescopic spiral wing 31a and the telescopic spiral wing 31b By energizing one, the movable cylinder 22 is expanded and contracted to perform positioning. Then, when the storage switch 42 is turned on, the energizing spiral blade 31b is energized to automatically shorten the moving cylinder 22.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional side view of a main part in an extended state according to the embodiment of the present invention.
FIG. 3 is a longitudinal sectional side view of a main part in a shortened state according to the embodiment of the present invention.
FIG. 4 is a circuit diagram according to the embodiment of the present invention.
FIG. 5 is an overall side view of a combine according to a second embodiment of the present invention.
FIG. 6 is a longitudinal sectional side view of a main part of a third example of the embodiment of the present invention.
FIG. 7 is an explanatory diagram according to the embodiment of the present invention.
FIG. 8 is an explanatory diagram in the embodiment of the present invention.
[Explanation of symbols]
21 Fixed cylinder 22 Moving cylinder 23 Rotating shaft cylinder 24 Fixed spiral blade (spiral blade)
25 Bearing 27 Moving rotary shaft 28 Bearing 29 Boss 31 Telescopic spiral blade (spiral blade)
32 outlet

Claims (1)

基部側の固定筒21に対して排出口32を有する先端側の移動筒22を長手方向摺動自在に嵌合し、前記固定筒21内に螺旋翼24を備えた回転軸筒23を軸装して該回転軸筒23の先端部を固定筒21内の先端部に設けた軸受25に軸受し、前記移動筒22内に移動回転軸27を軸装して該移動回転軸27の先端部を移動筒22内の先端部に設けた軸受28に軸受すると共に該移動回転軸27に弾性部材より形成した螺旋翼31を備えた複数のボス29を軸心方向摺動自在に設け、該複数のボス29は移動回転軸27と共に回転可能に構成し、前記回転軸筒23の先端側に移動回転軸27の基部側を軸心方向摺動自在に設け、該移動回転軸27は回転軸筒23と共に回転可能に構成し、前記ボス29の軸心方向の長さは前記螺旋翼31の1ピッチの長さよりも短く構成し、さらに、前記移動筒22が長手方向に伸長するほど移動筒22内の搬送能力が向上するように構成したことを特徴とする伸縮式の排出オ−ガ。A moving cylinder 22 on the distal end side having a discharge port 32 is slidably fitted in the fixed cylinder 21 on the base side in the longitudinal direction, and a rotating shaft cylinder 23 having a spiral blade 24 inside the fixed cylinder 21 is axially mounted. Then, the distal end portion of the rotary shaft barrel 23 is supported by a bearing 25 provided at the distal end portion in the fixed barrel 21, and the movable rotary shaft 27 is mounted in the movable barrel 22, and the distal end portion of the movable rotary shaft 27 is mounted. And a plurality of bosses 29 provided with a spiral wing 31 formed of an elastic member on the moving rotary shaft 27 so as to be slidable in the axial direction. The boss 29 is configured to be rotatable together with the moving rotary shaft 27, and the base side of the moving rotary shaft 27 is slidably provided in the distal end side of the rotary shaft barrel 23 in the axial direction. 23, and the length of the boss 29 in the axial direction is one of the spiral blades 31. Tsu configured shorter than the length of the switch, further telescoping discharge Oh, characterized in that the movable cylinder 22 is configured to improve the carrying capacity of the mobile cylinder 22 as extending longitudinally - moth.
JP2002333841A 2002-11-18 2002-11-18 Telescopic discharge auger Expired - Fee Related JP3551186B2 (en)

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