JP4117978B2

JP4117978B2 - Excavator

Info

Publication number: JP4117978B2
Application number: JP19951999A
Authority: JP
Inventors: 義已重村; 芳則滝沢
Original assignee: 松山株式会社
Priority date: 1999-07-13
Filing date: 1999-07-13
Publication date: 2008-07-16
Anticipated expiration: 2019-07-13
Also published as: JP2001025313A

Description

【０００１】
【発明の属する技術分野】
本発明は、たとえば、馬鈴薯、球根等の地下塊茎類の収穫物を収穫する掘取機に関する。
【０００２】
【従来の技術】
従来、この種の掘取機としては、たとえば、収穫物を掘り取る掘取体を設け、この掘取体にて掘り取られた収穫物を搬送するコンベヤを設け、このコンベヤから搬出される収穫物を排出するシュートを設け、前記コンベヤは、前記掘取体の後端側に回転可能に設けられた回転輪と、この回転輪の後方に位置して回転可能に設けられ駆動輪を両端部に固着した駆動軸と、前記回転輪と前記駆動輪との間に掛け回され前記駆動輪の回転で移動され土をふるい落とす間隔をおいて並設された搬送杆を有する無端搬送体とを備えた構成が知られている。
【０００３】
【発明が解決しようとする課題】
前記従来の掘取機の構成では、掘取体にて掘り取られた収穫物が無端搬送体の各搬送杆にてこの各搬送杆の間から土をふるい落としながら搬送されるが、この収穫物が、たとえば、偏平状のメークイン、球根等の非球形状であるときは、この収穫物が各搬送杆の間に挟まった状態のまま搬送され易く、無端搬送体からシュートに収穫物がスムーズに搬出されないことがあり、また、収穫物が各搬送杆の間に挟まった状態のまま無端搬送体が搬出側折返し部から折返されると、この搬出側折返し部で収穫物がシュートに当接し、このシュートに当接する衝撃で収穫物が損傷され易い、という問題がある。
【０００４】
そこで、駆動軸の周囲に無端搬送体が周面に沿って移動する円筒状カラーを設け、この円筒状カラーの周面で各搬送杆の間に挟まった状態で搬送される収穫物を各搬送杆の間から押し出す構成が考えられるが、この構成では、各搬送杆の間からふるい落とされる土が円筒状カラーの周面に溜まり易く、この円筒状カラーの周面に溜まった土で無端搬送体の移動が困難になる、という問題がある。
【０００５】
本発明は、このような点に鑑みてなされたもので、各搬送杆の間からふるい落とされる土が収穫物押出体の周面に溜まることを防止して各搬送杆の間に挟まった状態で搬送される収穫物を各搬送杆の間から確実に押し出し、無端搬送体からシュート上に収穫物をスムーズに搬出できる掘取機を提供することを目的とするものである。
【０００６】
【課題を解決するための手段】
請求項１記載の掘取機は、収穫物を掘り取る掘取体と、この掘取体にて掘り取られた収穫物を搬送するコンベヤと、このコンベヤから搬出される収穫物を排出するシュートとを具備し、前記コンベヤは、前記掘取体の後端側の両端部にそれぞれ回転可能に設けられた回転輪と、この回転輪の後方に位置して回転可能に設けられ駆動輪を両端部に固着した駆動軸と、前記回転輪と前記駆動輪との間に掛け回され前記駆動輪の回転で移動され土をふるい落とす間隔をおいて並設された搬送杆を有する無端搬送体とを備え、前記駆動軸に前記無端搬送体の搬送杆の間に挟まった収穫物を押し出す収穫物押出体を設け、前記収穫物押出体は、前記駆動軸の両端部に固着した駆動輪にそれぞれ固着された円板状端板と、これら円板状端板の周縁部間に間隔をおいて並設固定され前記駆動軸の周囲を折返す各搬送杆の間に位置する収穫物押出棒とを有し、前記駆動軸は、この駆動軸の両端部にフランジをそれぞれ有し、前記駆動輪は、周縁部から突出し前記搬送杆に係合してこの搬送杆を移動させる係合爪及びこの周縁部に開口した半径方向の嵌合凹部をそれぞれ有し、この嵌合凹部内に前記駆動軸を嵌合した状態で前記フランジに前記駆動輪を着脱可能に固着するものである。
【０００７】
そして、掘取体が土を掘り起こしながら進行することにより、この掘取体にて収穫物が順次掘り出され、この掘取体にて掘り出された収穫物が掘取体からコンベヤの無端搬送体の各搬送杆上に順次搬入され、この無端搬送体の各搬送杆にてこれら各搬送杆の間から土をふるい落としながら収穫物が搬送される。
【０００８】
また、掘取体からコンベヤの無端搬送体の各搬送杆上に順次搬入された収穫物が各搬送杆の間に挟まった状態で収穫物押出体の周面に搬送されると、この収穫物押出体の各収穫物押出棒にて各搬送杆の間に挟まった収穫物がこれら各搬送杆の間から押し出され、これら収穫物が無端搬送体の搬出側折返し部からシュート上にスムーズに搬出され、このシュートから収穫物が地面に排出される。
【０００９】
このとき、収穫物押出体の各収穫物押出棒が駆動軸の周囲を折返す各搬送杆の間に位置する状態で移動することにより、この各収穫物押出棒にて無端搬送体の各搬送杆の間に挟まった状態で搬送される収穫物がこれら各搬送杆の間から確実に押し出される。
【００１０】
また、各搬送杆の間からふるい落とされる土が収穫物押出体の各収穫物押出棒の間から更にふるい落とされ、この収穫物押出体の周面に各搬送杆の間からふるい落とされる土が溜まることがなく、無端搬送体の移動が困難になることを防止できる。
【００１１】
さらに、無端搬送体の搬出側折返し部の内側に駆動軸を軸支したままの状態で、この駆動軸に嵌合凹部から駆動輪が簡単に嵌合され、この嵌合凹部内に駆動軸を嵌合した状態でこの駆動軸のフランジに駆動輪が確実に固着される。
【００１２】
また、駆動軸にて駆動輪が回転されると、この駆動輪の周縁部に突出した係合爪が無端搬送体の各搬送杆に順次係合して、これら係合爪にて無端搬送体の各搬送杆が順次確実に移動される。
【００１３】
また、駆動輪の周縁部に突出した係合爪が折損する等駆動輪に不測の事態が生じたときは、無端搬送体の搬出側折返し部の内側に駆動軸を軸支したままの状態で、駆動輪を簡単に着脱交換できる。
【００１４】
請求項２記載の掘取機は、請求項１記載の掘取機において、収穫物押出棒を周縁部間に並設固定した円板状端板は、周縁部に開口した半径方向の嵌合凹部をそれぞれ有し、これら嵌合凹部内に前記駆動軸を嵌合した状態で前記駆動輪に着脱可能に固着するものである。
【００１５】
そして、無端搬送体の搬出側折返し部の内側に駆動軸を軸支したままの状態で、この駆動軸に嵌合凹部から円板状端板がそれぞれ簡単に嵌合され、この嵌合凹部内に駆動軸を嵌合した状態でこの駆動軸のフランジに固着された駆動輪に円板状端板がそれぞれ確実に固着される。
【００１６】
また、既存の掘取機に設けられたコンベヤの無端搬送体の搬出側折返し部の内側に軸支された駆動軸に円板状端板がそれぞれ簡単に嵌合され、この嵌合凹部内に駆動軸を嵌合した状態でこの駆動軸のフランジに固着された駆動輪に円板状端板がそれぞれ確実に固着される。
【００１７】
請求項３記載の掘取機は、請求項１または２記載の掘取機において、収穫物押出棒の外周面を弾性材で被覆するものである。
【００１８】
そして、収穫物押出棒にて無端搬送体の各搬送杆の間に挟まった状態で搬送される収穫物を押し出すとき、この収穫物押出棒の外周面を被覆した弾性材にて収穫物を損傷することなく各搬送杆の間から収穫物を押し出すことができる。
【００１９】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【００２０】
図１及び図２において、１は掘取機で、この掘取機１は、機体２と、収穫物を掘り取る掘取体３と、この掘取体３にて掘り取られた収穫物を搬送するコンベヤ４と、このコンベヤ４から搬出される収穫物を排出するシュート５とを具備している。
【００２１】
そして、前記機体２は、主フレーム６と、ミッション装置７と、連結機枠８と、板状側枠９とを有し、前記主フレーム６は前記掘取機１の進行方向に対して左右方向を長手方向とした中空筒状部材にて形成されている。
【００２２】
また、前記ミッション装置７は、前記主フレーム６の中間部に固定されたミッションケース10に入力軸11が回転自在に軸支され、この入力軸11にて回転される出力軸12が前記ミッションケース10及びこのミッションケース10の一側部から前記主フレーム６内に回転自在に軸支され、前記ミッションケース10内において前記入力軸11に固定されたベベルギヤ13に前記出力軸12に固定されたベベルギヤ14が噛合されている。
【００２３】
また、前記連結機枠８は、前記主フレーム６の両側部からそれぞれ前下方に向かって突出されたロワアーム15と、前記ミッションケース10の上部から前方に向かって突出されたトップアーム16とを有し、前記ロワアーム15の先端部にロワピン17がそれぞれ設けられ、前記トップアーム16の先端部にトップピン18が設けられている。また、前記両ロワアーム15と前記トップアーム16とは連結片19にて連結されている。
【００２４】
さらに、前記板状側枠９は、前記主フレーム６の両端部に相対してそれぞれ固定され、これら板状側枠９の前側下端部に前方に向かって突出した取付板20が相対してそれぞれ固定されている。
【００２５】
つぎに、前記掘取体３は、前記相対する取付板20間に前下方に向かって傾斜して突出した状態で固定され、この掘取体３は先端を山形状に形成した先金板にて形成されている。
【００２６】
つぎに、前記コンベヤ４は、前記掘取体３の後端側の両端部にそれぞれ回転可能に設けられた回転輪21と、この回転輪21の後方に位置して回転可能に設けられ駆動輪22を両端部に固着した駆動軸23と、前記回転輪21と前記駆動輪22との間に掛け回され前記駆動輪22の回転で移動され土をふるい落とす間隔をおいて並設された搬送杆24を有する無端搬送体25とを備え、さらに、前記無端搬送体24の搬送面及び非搬送面を張設するテンションローラ26を備えている。
【００２７】
そして、前記回転輪21は、前記掘取体３の後端側に位置して前記相対する取付板20及び板状側枠９からそれぞれ内側に向かって対向して突出された支軸27にてそれぞれ回転自在に軸支され、この両端部の回転輪21は、前記駆動軸23の両端部の駆動輪22に対向した位置でそれぞれ回転可能に軸支されている。また、前記回転輪21はローラにて形成されている。
【００２８】
また、前記駆動輪22を両端部に固着した駆動軸23は、前記支軸27より後側上方に位置して前記相対する板状側枠９の後端部間に回転自在に軸支されている。また、前記駆動軸23は、図３に示すように、この駆動軸23の両端部に円板状に一体に形成されたフランジ28をそれぞれ有し、これらフランジ28の周縁部に周面に雌ねじを有する複数のねじ孔29がそれぞれ形成されている。
【００２９】
また、前記駆動輪22は、図３に示すように、周縁部30から突出し前記各搬送杆24に係合してこれら搬送杆24を移動させる係合爪31及びこの周縁部30に開口した半径方向の嵌合凹部32をそれぞれ有している。
【００３０】
そして、前記係合爪31は、前記駆動輪22の周縁部30に前記各搬送杆24に順次係合してこれら搬送杆24を移動させる間隔をおいてこの周縁部30から複数突出されている。
【００３１】
また、前記嵌合凹部32は、前記周縁部30に開口し前記駆動軸23を嵌合する嵌合口33及びこの嵌合口33に連通し駆動輪22の中心部に前記駆動軸23を嵌合する嵌合部34をそれぞれ有している。また、前記嵌合部34の周縁部に前記フランジ28に形成された複数のねじ孔29にそれぞれ連通する複数のボルト挿通孔35が形成されている。
【００３２】
そして、前記嵌合凹部32の嵌合部34内に前記駆動軸23を嵌合した状態で前記フランジ28に前記駆動輪22がそれぞれ着脱可能に固着されるようになっている。また、前記駆動輪22はスプロケットにて形成されている。
【００３３】
さらに、前記無端搬送体25は、図１及び図３に示すように、無端状に順次軸支される複数のリンクプレート36と、これらリンクプレート36を無端状に順次軸支して土をふるい落とす間隔をおいて並設される前記複数の搬送杆24とを有している。
【００３４】
そして、前記複数の搬送杆24は、前記掘取機１の進行方向に対して左右方向をそれぞれ軸方向とし、これら搬送杆24の両端部に前記各リンクプレート36の両端部を互いに重ね合わせた状態でこれら重ね合わ部がそれぞれ回動自在に軸支され、前記複数の搬送杆24及びこれら搬送杆24の両端部に軸支された複数のリンクプレート36にて前記無端搬送体25が形成されている。
【００３５】
また、前記テンションローラ26は前記無端搬送体25の搬送面及びこの搬送面が前記両駆動輪22から下方に向かって折返し移動する非搬送面を張設する所定の位置に位置して前記相対する板状側枠９にそれぞれ回転自在に軸支されている。
【００３６】
つぎに、前記駆動軸23に前記無端搬送体25の各搬送杆24の間に挟まった収穫物をこれら搬送杆24の間から押し出す収穫物押出体37が設けられている。
【００３７】
前記収穫物押出体37は、図１に示すように、前記駆動軸23の両端部に固着した駆動輪22にそれぞれ固着された円板状端板38と、これら円板状端板38の周縁部40間に間隔をおいて並設固定され前記駆動軸23の周囲を折返す前記各搬送杆24の間に位置する状態で移動する収穫物押出棒39とを有している。
【００３８】
そして、図３に示すように、前記円板状端板38は、周縁部40に開口した半径方向の嵌合凹部41をそれぞれ有し、前記嵌合凹部41は、前記周縁部40に開口し前記駆動軸23を嵌合する嵌合口42及びこの嵌合口42に連通し円板状端板38の中心部に前記駆動軸23を嵌合する嵌合部43をそれぞれ有している。
【００３９】
また、前記嵌合部43の周縁部に前記フランジ28に形成された複数のねじ孔29及び前記駆動輪22に形成された複数のボルト挿通孔35にそれぞれ連通する複数のボルト挿通孔44が形成されている。
【００４０】
そして、図４及び図５に示すように、前記嵌合凹部41の嵌合部43内に前記駆動軸23を嵌合した状態で前記駆動輪22に前記両円板状端板38がそれぞれ着脱可能に固着され、すなわち、前記両円板状端板38に形成された各ボルト挿通孔44から前記駆動輪22に形成された各ボルト挿通孔35及び前記フランジ28に形成された各ねじ孔29に複数の固定ボルト45を挿通して螺着し、これら固定ボルト45にて前記両フランジ28に前記両駆動輪22が、この両駆動輪22に両円板状端板38がそれぞれ着脱可能に固着されている。
【００４１】
また、前記各収穫物押出棒39の外周面を弾性材46で被覆している。前記各収穫物押出棒39は丸棒にて形成されている。
【００４２】
そして、前記駆動軸23の両端部の駆動輪22に固着する相対する円板状端板38と、これら円板状端板38の周縁部40間に間隔をおいて並設固定された前記収穫物押出棒39とにて前記収穫物押出体37が前記駆動軸23の両端部の駆動輪22に着脱可能に固着されるユニットとして形成されている。
【００４３】
つぎに、前記シュート５は、図１及び図４に示すように、前記無端搬送体25の搬送面の搬出側折返し部47から所定の間隔で離間した状態で前記相対する板状側枠９に固定されている。
【００４４】
そして、前記シュート５は、前記相対する板状側枠９の後端部間に固定された固定杆48と、この固定杆48にこの固定杆48の軸方向に土をふるい落とす間隔をおいて並設固定された案内杆49とを有し、これら案内杆49がそれぞれ前記固定杆48から後方に向かって突出されている。
【００４５】
また、前記相対する板状側枠９の後端部に前記シュート５上に搬出される収穫物をこのシュート５の中間部の案内杆49に向かう方向に案内する案内側板50がそれぞれ固定されている。
【００４６】
つぎに、図１及び図２に示すように、前記コンベヤ４の駆動軸23の一端部にプーリ51が固定され、前記主フレーム６から突出された前記出力軸12の一端部にプーリ52が固定され、前記駆動軸23の一端部のプーリ51と前記出力軸12の一端部のプーリ52との間に無端ベルト53が掛け回されている。
【００４７】
また、前記板状側枠９に前記無端ベルト53に係合したテンションローラ54が回転自在に軸支され、このテンションローラ54は前記無端ベルト53を常時緊張させる方向に向かってコイルばね55にて附勢されている。
【００４８】
そして、前記出力軸12からの出力によりプーリ51，52及び無端ベルト53を介して前記駆動軸23が回転され、この駆動軸23の両端部に固定した駆動輪22にて前記無端搬送体25が移動され、この無端搬送体25の搬送面が後上方に向かって移動されるようになっている。
【００４９】
なお、図中56は前記相対する板状側枠９にそれぞれ上下方向に位置調節可能に取り付けられた接地体で、これら接地体56は地面に接地して地面を滑動するそり体にて形成されている。
【００５０】
つぎに、前記実施の形態の作用を説明する。
【００５１】
トラクタの左右のロワリンクに掘取機１の左右のロワアーム15に設けたロワピン17をそれぞれ連結し、トラクタのトップリンクに掘取機１のトップアーム16に設けたトップピン18を連結し、さらに、トラクタのＰＴＯ軸に掘取機１に設けたミッション装置７の入力軸11を連結する。
【００５２】
つぎに、トラクタにて掘取機１が牽引され、トラクタのＰＴＯ軸から出力によりミッション装置７の入力軸11が回転されるとともに、この入力軸11にて出力軸12が回転され、この出力軸12から出力により無端ベルト53を介してコンベヤ４の駆動軸23が回転駆動され、この駆動軸23の両端部に固着した駆動輪22にてコンベヤ４の無端搬送体25が回行され、この無端搬送体25の搬送面が後上方に向かって移動される。
【００５３】
そして、この状態で、掘取体３が土を掘り起こしながら進行することにより、この掘取体３にて土中から収穫物Ａが順次掘り出され、この掘取体３にて掘り出された収穫物Ａが掘取体３からコンベヤ４の無端搬送体25の搬送面の各搬送杆24上に順次搬入され、この無端搬送体25の各搬送杆24にてこれら各搬送杆24の間から土をふるい落としながら収穫物Ａが搬送される。
【００５４】
また、掘取体３からコンベヤ４の無端搬送体25の各搬送杆24上に順次搬入された収穫物Ａが各搬送杆24の間に挟まった状態で収穫物押出体37の周面に搬送されると、図６に示すように、この収穫物押出体37の各収穫物押出棒39にて各搬送杆24の間に挟まった収穫物Ａがこれら各搬送杆24の間から押し出され、これら収穫物Ａが無端搬送体25の搬出側折返し部47からシュート５上にスムーズに搬出され、このシュート５から収穫物Ａが地面に排出される。
【００５５】
このとき、収穫物押出体37の各収穫物押出棒39が駆動軸23の周囲を折返す各搬送杆24の間に位置する状態で移動することにより、この各収穫物押出棒39にて無端搬送体25の各搬送杆24の間に挟まった状態で搬送される収穫物Ａがこれら各搬送杆24の間から確実に押し出される。
【００５６】
このため、各搬送杆24の間に挟まり易い、たとえば、偏平状のメークイン、球根等の非球形状の収穫物Ａを搬送するときも、各搬送杆24の間に挟まった非球形状の収穫物Ａが収穫物押出体37の各収穫物押出棒39にて各搬送杆24の間から確実に押し出され、無端搬送体25の搬出側折返し部47で、収穫物Ａがシュート５の固定杆48に当接してその衝撃で収穫物Ａが損傷することがなく、また、無端搬送体25の搬出側折返し部47を折返し移動する搬送面とシュート５の固定杆48との間に収穫物Ａが引き込まれることを確実に防止できる。
【００５７】
また、無端搬送体25の各搬送杆24の間からふるい落される土が収穫物押出体37の各収穫物押出棒39の間から更に確実にふるい落とされ、この収穫物押出体37の周面に各搬送杆24の間からふるい落とされる土が溜まることがなく、各搬送杆24の間からふるい落とされる土で無端搬送体25の移動が困難になることを確実に防止できる。
【００５８】
つぎに、コンベヤ４の駆動軸23は、この駆動軸23の両端部にフランジ28をそれぞれ有し、駆動輪22は、この駆動輪22の周縁部30から突出し搬送杆24に係合してこの搬送杆24を移動させる係合爪31及びこの周縁部30に開口した半径方向の嵌合凹部32をそれぞれ有し、この嵌合凹部32内に前記駆動軸23を嵌合した状態で前記フランジ28に前記駆動輪22を着脱可能に固着することにより、無端搬送体25の搬出側折返し部47の内側に位置して駆動軸23を軸支したままの状態で、この駆動軸23に嵌合凹部32の嵌合口33から駆動輪22が簡単に嵌合され、この嵌合凹部32の嵌合部34内に駆動軸23を嵌合した状態でこの駆動軸23のフランジ28に駆動輪22が確実に固着される。
【００５９】
また、駆動軸23にて駆動輪22が回転されると、この駆動輪22の周縁部30から突出した係合爪31が無端搬送体25の各搬送杆24に順次係合して、これら係合爪31にて無端搬送体25の各搬送杆24が順次確実に移動される。
【００６０】
また、駆動輪22の周縁部から突出した係合爪31が折損する等駆動輪22に不測の事態が生じたときは、無端搬送体25の搬出側折返し部47の内側に位置して駆動軸23を軸支したままの状態で、駆動軸23から駆動輪22を引き抜くことにより、駆動輪22を簡単に着脱交換することができる。
【００６１】
つぎに、収穫物押出棒39を周縁部40間に並設固定した円板状端板38は、この円板状端板38の周縁部40に開口した半径方向の嵌合凹部41をそれぞれ有し、これら嵌合凹部41の嵌合部43内に前記駆動軸23を嵌合した状態で前記駆動輪22に着脱可能に固着することにより、無端搬送体25の搬出側折返し部47の内側に位置して駆動軸23を軸支したままの状態で、この駆動軸23に嵌合凹部41の嵌合口42から円板状端板38がそれぞれ簡単に嵌合され、この嵌合凹部41の嵌合部43内に駆動軸23を嵌合した状態でこの駆動軸23のフランジ28に固着された駆動輪22に円板状端板38がそれぞれ確実に固着される。
【００６２】
また、既存の掘取機１に設けられたコンベヤ４の無端搬送体25の搬出側折返し部47の内側に位置した駆動軸23に円板状端板38がそれぞれ簡単に嵌合され、この嵌合凹部41の嵌合部43内に駆動軸23を嵌合した状態でこの駆動軸23のフランジ28に固着された駆動輪22に円板状端板38がそれぞれ確実に固着される。
【００６３】
そして、円板状端板38の各ボルト挿通孔44から駆動輪22の各ボルト挿通孔35に固定ボルト45をそれぞれ挿通するとともに、これら固定ボルト45をフランジ28の各ねじ孔29に挿通して締着することにより、駆動軸23のフランジ28に駆動輪22及び円板状端板38が確実に固定される。
【００６４】
また、各固定ボルト45を引き抜くことにより、駆動軸23のフランジ28から駆動輪22及び円板状端板38を簡単に取り外すことができる。また、駆動軸23のフランジ28に駆動輪22及び円板状端板38を各固定ボルト45にて共締めすることにより、駆動軸23のフランジ28に対する駆動輪22及び円板状端板38の着脱交換が簡単であり、部品点数も少なく、製造性を向上することができる。
【００６５】
また、収穫物押出体37はユニットとして形成され、この収穫物押出体37の両端部の円板状端板38が両駆動輪22に対して着脱交換が簡単であるため、収穫物Ａの種類や大きさに応じて無端搬送体25の各搬送杆24の間の間隔が変更されても、その無端搬送体25の各搬送杆24間の間隔に応じて各搬送杆24の間に位置する状態で移動する収穫物押出棒39を備えた収穫物押出体37に簡単に着脱交換することができる。
【００６６】
つぎに、収穫物押出体37の各収穫物押出棒39の外周面を弾性材46で被覆することにより、各収穫物押出棒39にて無端搬送体25の各搬送杆24の間に挟まった状態で搬送される収穫物Ａを押し出すとき、この各収穫物押出棒39の外周面を被覆した弾性材46にて収穫物Ａを損傷することなく各搬送杆24の間から収穫物Ａを押し出すことができる。
【００６７】
【発明の効果】
請求項１の発明によれば、無端搬送体の各搬送杆の間からふるい落とされる土を収穫物押出体の各収穫物押出棒の間から更にふるい落とし、この収穫物押出体の周面に各搬送杆の間からふるい落とされる土が溜まることを確実に防止できるとともに、この収穫物押出体の各収穫物押出棒にて各搬送杆の間に挟まった状態で搬送される収穫物を各搬送杆の間から確実に押し出すことができ、無端搬送体からシュート上に収穫物をスムーズに搬出することができ、収穫物が各搬送杆の間に挟まった状態のままでシュートに当接して収穫物が損傷されることを確実に防止できる。また、無端搬送体の搬出側折返し部の内側に駆動軸を軸支した状態で、この駆動軸に駆動輪を簡単に嵌合でき、この駆動軸を嵌合した状態でこの駆動軸のフランジに駆動輪を確実に固着でき、また、駆動輪の周縁部に突出した係合爪にて無端搬送体の各搬送杆を確実に移動できる。また、駆動輪の周縁部面に突出した係合爪が折損する等駆動輪に不測の事態が生じたときは、無端搬送体の搬出側折返し部内に駆動軸を挿通した状態のままで、駆動輪を簡単に着脱交換できる。
【００６８】
請求項２の発明によれば、請求項１の発明の効果に加え、無端搬送体の搬出側折返し部の内側に駆動軸を軸支した状態で、この駆動軸に円板状端板をそれぞれ簡単に嵌合でき、この駆動軸を嵌合した状態でこの駆動軸のフランジに固着された駆動輪に円板状端板をそれぞれ確実に固着できる。また、既存の掘取機に設けられたコンベヤの無端搬送体の搬出側折返し部の内側に軸支された駆動軸に円板状端板をそれぞれ簡単に嵌合でき、この駆動軸を嵌合した状態でこの駆動軸のフランジに固着された駆動輪に円板状端板をそれぞれ確実に固着でき、既存の掘取機の性能を向上することができる。
【００６９】
請求項３の発明によれば、請求項１または２の発明の効果に加え、収穫物押出棒にて無端搬送体の各搬送杆の間に挟まった状態で搬送される収穫物を押し出すとき、この収穫物押出棒の外周面を被覆した弾性材にて収穫物を損傷することなく各搬送杆の間から収穫物を確実に押し出すことができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す掘取機の平面図である。
【図２】同上側面図である。
【図３】同上無端搬送体を駆動する駆動部を示す一部の分解拡大斜視図である。
【図４】同上組み立てた状態を示す一部の拡大平面図である。
【図５】同上側面図である。
【図６】同上収穫物を押し出す状態を示す説明図である。
【符号の説明】
３掘取体
４コンベヤ
５シユート
21 回転輪
22 駆動輪
23 駆動軸
24 搬送杆
25 無端搬送体
28 フランジ
31 係合爪
32，41 嵌合凹部
37 収穫物押出体
38 円板状端板
39 収穫物押出棒
46 弾性材
Ａ収穫物[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an excavator for harvesting a crop of underground tubers such as potatoes and bulbs.
[0002]
[Prior art]
Conventionally, as this type of excavator, for example, a digging body for digging a harvested product is provided, and a conveyor for conveying the harvested product digged by the digging product is provided, and the harvesting carried out from this conveyor is provided. A chute for discharging the object is provided, and the conveyor is provided with a rotating wheel rotatably provided at a rear end side of the digging body, and a drive wheel provided rotatably at both ends of the rotating wheel. A driving shaft fixed to the rotating wheel, and an endless conveying body having a conveying rod arranged in parallel with an interval between the rotating wheel and the driving wheel, which is moved by rotation of the driving wheel and sifts the soil. Configurations provided are known.
[0003]
[Problems to be solved by the invention]
In the configuration of the conventional digging machine, the harvested material dug by the digging body is transported while sieving the soil from between the transporting troughs in each transport trough of the endless transporting body. However, for example, when it is a non-spherical shape such as a flat-shaped make-in or bulb, the harvest is easily transported while being sandwiched between the transport rods, and the harvest is smoothly transferred from the endless transport body to the chute. When the endless transporter is folded back from the carry-out side folded portion while the harvest is sandwiched between the respective transport troughs, the harvest comes into contact with the chute at the carry-out side folded portion, There is a problem that the crop is easily damaged by the impact abutting against the chute.
[0004]
Therefore, a cylindrical collar is provided around the drive shaft so that the endless transport body moves along the peripheral surface. The harvested material transported in a state of being sandwiched between the transport rods on the peripheral surface of the cylindrical collar is transported. A configuration that pushes out from between the troughs can be considered, but in this configuration, the soil that is sifted out from between each transport trough tends to collect on the circumferential surface of the cylindrical collar, and endless conveyance with the soil accumulated on the circumferential surface of this cylindrical collar There is a problem that it becomes difficult to move the body.
[0005]
The present invention has been made in view of such a point, and prevents soil collected from between the transporting troughs from being collected on the peripheral surface of the harvested extrudate and sandwiched between the transporting troughs. It is an object of the present invention to provide a digger capable of reliably extruding a harvested product conveyed by the above-mentioned between each conveying rod and smoothly carrying out the harvested product onto a chute from an endless conveying body.
[0006]
[Means for Solving the Problems]
請 Motomeko 1 photo machine according discharges and up body digging takes digging harvest, a conveyor for conveying the crop taken digging at this digging-up body, the crop to be unloaded from the conveyor A chute, and the conveyor includes a rotating wheel rotatably provided at both ends on the rear end side of the digging body, and a driving wheel rotatably provided at the rear of the rotating wheel. An endless transport body having a drive shaft fixed to both ends, and a transport rod that is arranged between the rotating wheel and the driving wheel, arranged in parallel with an interval that is moved by the rotation of the driving wheel and sifts the soil. Provided with a harvested product extrudate for extruding the harvested product sandwiched between the transport rods of the endless transporter on the drive shaft, the harvested product extrudate on the drive wheels fixed to both ends of the drive shaft Between the fixed disk-shaped end plates and the peripheral edges of these disk-shaped end plates The and a crop extruded rod juxtaposed fixed positioned between the respective conveying rod to wrap around the drive shaft at the drive shaft, the flange and has on both ends of the drive shaft, the drive wheel has a engaging claw and radial fitting recess which is open to the periphery moves the conveying rod engages a projecting said conveying rod from the periphery, respectively, into the fitting in the recess The drive wheel is detachably fixed to the flange with the drive shaft fitted.
[0007]
Then, as the digging body progresses while digging up the soil, the harvested material is dug in order by this digging body, and the harvested material excavated by this digging body is transported endlessly from the digging body to the conveyor. The products are sequentially carried onto the respective transport baskets of the body, and the harvested products are transported while sieving the soil from among the respective transport baskets by the respective transport baskets of the endless transport body.
[0008]
In addition, when the harvested product sequentially transferred from the excavated body onto each transport rod of the endless transport body of the conveyor is transported to the peripheral surface of the crop extrudate while being sandwiched between the transport rods, The harvested product sandwiched between the transporting rods by each harvested product extrusion rod of the extruded body is pushed out from between the respective transporting rods, and these harvested products are smoothly transported onto the chute from the unfolding side folding portion of the endless transporter. From this chute, the harvest is discharged to the ground.
[0009]
At this time, each crop push bar of the crop pusher moves in a state where it is positioned between each feed rod that folds around the drive shaft. The harvested product conveyed in a state of being sandwiched between the straws is surely pushed out from between these transporting straws.
[0010]
In addition, the soil screened from between the transport rods is further screened from between the crop extrusion rods of the crop extrudate, and the soil to be screened from between the transport rods on the peripheral surface of the crop extrudate. Therefore, it is possible to prevent the endless transfer body from becoming difficult to move.
[0011]
Further, the drive wheel is easily fitted to the drive shaft from the fitting recess while the drive shaft is pivotally supported inside the carry-out side folded portion of the endless transport body, and the drive shaft is fitted into the fitting recess. The drive wheel is securely fixed to the flange of the drive shaft in the fitted state.
[0012]
Further, when the driving wheel is rotated by the driving shaft, the engaging claws protruding from the peripheral portion of the driving wheel are sequentially engaged with the conveying rods of the endless conveying body, and the endless conveying body is engaged with these engaging claws. Each of the transport rods is sequentially and reliably moved.
[0013]
Also, when an unexpected situation occurs in the drive wheel, such as the engaging claw protruding to the peripheral edge of the drive wheel breaks, the drive shaft is supported on the inner side of the carry-out side folded portion of the endless transport body. The drive wheel can be easily attached and detached.
[0014]
Photo machine according to claim 2, wherein, in the photo machine according to claim 1 Symbol placement, disc-shaped end plates juxtaposed fixed between the peripheral edge portion of the crop push rod is fitted in the radial direction which is open to the periphery Each has a joint recess, and is detachably fixed to the drive wheel in a state in which the drive shaft is fitted in the fitting recess.
[0015]
Then, with the drive shaft pivotally supported inside the carry-out side folded portion of the endless transport body, the disk-shaped end plates are easily fitted to the drive shaft from the fitting recesses, respectively. The disc-shaped end plates are securely fixed to the drive wheels fixed to the flange of the drive shaft in a state where the drive shaft is fitted to the drive shaft.
[0016]
In addition, disk-like end plates are easily fitted to drive shafts that are pivotally supported on the inner side of the carry-out side folding portion of the endless conveyor of the conveyor provided in the existing excavator, and this fitting recess When the drive shaft is fitted, the disk-shaped end plates are securely fixed to the drive wheels fixed to the flange of the drive shaft.
[0017]
The excavator according to claim 3 is the excavator according to claim 1 or 2 , wherein the outer peripheral surface of the harvested product push rod is covered with an elastic material.
[0018]
Then, when the harvested product that is transported in a state sandwiched between the transport rods of the endless transport body is pushed out by the harvested product extrusion rod, the harvested product is damaged by the elastic material that covers the outer peripheral surface of the harvested product extrusion rod. It is possible to extrude the harvest from between each transport rod without doing so.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
1 and 2, reference numeral 1 denotes a digger. The digger 1 includes a body 2, a digging body 3 for digging a harvested product, and a crop digged by the digging body 3. The conveyor 4 which conveys, and the chute | shoot 5 which discharges the crops conveyed from this conveyor 4 are comprised.
[0021]
The airframe 2 has a main frame 6, a mission device 7, a connecting machine frame 8, and a plate-like side frame 9, and the main frame 6 is left and right with respect to the traveling direction of the excavator 1. It is formed of a hollow cylindrical member whose direction is the longitudinal direction.
[0022]
The transmission device 7 has an input shaft 11 rotatably supported on a mission case 10 fixed to an intermediate portion of the main frame 6, and an output shaft 12 rotated by the input shaft 11 is connected to the mission case. 10 and a bevel gear fixed to the output shaft 12 by a bevel gear 13 rotatably supported in the main frame 6 from one side of the transmission case 10 and fixed to the input shaft 11 in the mission case 10 14 is meshed.
[0023]
The connecting machine frame 8 has a lower arm 15 projecting forward and downward from both sides of the main frame 6 and a top arm 16 projecting forward from the upper portion of the transmission case 10. A lower pin 17 is provided at the tip of the lower arm 15, and a top pin 18 is provided at the tip of the top arm 16. Further, the lower arm 15 and the top arm 16 are connected by a connecting piece 19.
[0024]
Further, the plate-like side frames 9 are fixed to both ends of the main frame 6 respectively, and mounting plates 20 projecting forward from the front lower ends of the plate-like side frames 9 are respectively opposed to each other. It is fixed.
[0025]
Next, the digging body 3 is fixed between the opposing mounting plates 20 in a state of projecting while being inclined forward and downward, and the digging body 3 is attached to a tip metal plate having a tip formed in a mountain shape. Is formed.
[0026]
Next, the conveyor 4 includes a rotating wheel 21 that is rotatably provided at both end portions on the rear end side of the digging body 3, and a driving wheel that is rotatably provided behind the rotating wheel 21. The drive shaft 23 having 22 fixed to both ends, and the conveyance wheel arranged between the rotating wheel 21 and the driving wheel 22 and arranged in parallel with an interval to remove the soil by moving by the rotation of the driving wheel 22 An endless transport body 25 having a flange 24, and a tension roller 26 that stretches the transport surface and the non-transport surface of the endless transport body 24.
[0027]
The rotating wheel 21 is located on the rear end side of the digging body 3 by a support shaft 27 projecting inwardly from the opposing mounting plate 20 and the plate-like side frame 9. The rotating wheels 21 at both ends are rotatably supported at positions opposite to the driving wheels 22 at both ends of the driving shaft 23, respectively. The rotating wheel 21 is formed of a roller.
[0028]
A drive shaft 23 having the drive wheel 22 fixed to both ends is pivotally supported between the rear end portions of the plate-like side frames 9 located on the rear upper side of the support shaft 27. Yes. Further, as shown in FIG. 3, each of the drive shafts 23 has flanges 28 integrally formed in a disc shape at both ends of the drive shaft 23, and the peripheral surfaces of these flanges 28 are internally threaded on the peripheral surface. A plurality of screw holes 29 having the above are respectively formed.
[0029]
Further, as shown in FIG. 3, the driving wheel 22 protrudes from the peripheral portion 30, engages with each of the conveying rods 24 and moves the conveying rods 24, and a radius opened at the peripheral portion 30. Each has a fitting recess 32 in the direction.
[0030]
A plurality of the engaging claws 31 are protruded from the peripheral edge 30 with an interval for sequentially engaging the peripheral edges 30 of the drive wheel 22 with the respective conveying rods 24 and moving the conveying rods 24. .
[0031]
Further, the fitting recess 32 opens to the peripheral edge 30 and is fitted to the fitting port 33 for fitting the driving shaft 23, and the driving shaft 23 is fitted to the center of the driving wheel 22 in communication with the fitting port 33. Each has a fitting portion 34. Further, a plurality of bolt insertion holes 35 communicating with the plurality of screw holes 29 formed in the flange 28 are formed at the peripheral edge of the fitting portion 34.
[0032]
The drive wheels 22 are detachably fixed to the flange 28 in a state where the drive shaft 23 is fitted in the fitting portion 34 of the fitting recess 32. The drive wheel 22 is formed of a sprocket.
[0033]
Further, as shown in FIGS. 1 and 3, the endless transport body 25 includes a plurality of link plates 36 that are sequentially supported in an endless manner, and sieves the soil by sequentially supporting these link plates 36 in an endless manner. The plurality of conveying rods 24 arranged in parallel at intervals to be dropped.
[0034]
The plurality of transport rods 24 have axial directions in the left and right directions with respect to the traveling direction of the excavator 1, and both end portions of the link plates 36 are overlapped with both end portions of the transport rod 24. In this state, the overlapping portions are pivotally supported so that the endless transport body 25 is formed by the plurality of transport rods 24 and the plurality of link plates 36 pivotally supported at both ends of the transport rods 24. Yes.
[0035]
The tension roller 26 is located at a predetermined position where the conveying surface of the endless conveying member 25 and the non-conveying surface in which the conveying surface is turned downward from the drive wheels 22 are stretched and face each other. Each of the plate-like side frames 9 is rotatably supported.
[0036]
Next, a harvested product extruding body 37 is provided on the drive shaft 23 to push the harvested product sandwiched between the transporting rods 24 of the endless conveying body 25 from between the conveying rods 24.
[0037]
As shown in FIG. 1, the harvested product extrudate 37 includes a disk-shaped end plate 38 fixed to drive wheels 22 fixed to both ends of the drive shaft 23, and the peripheral edges of the disk-shaped end plates 38. And a crop pusher bar 39 that moves in a state of being positioned between the conveying rods 24 that are fixed in parallel with a gap between the portions 40 and that folds around the drive shaft 23.
[0038]
As shown in FIG. 3, each of the disk-shaped end plates 38 has a fitting recess 41 in the radial direction that opens to the peripheral edge 40, and the fitting recess 41 opens to the peripheral edge 40. A fitting port 42 into which the drive shaft 23 is fitted, and a fitting portion 43 that communicates with the fitting port 42 and fits the drive shaft 23 at the center of the disc-shaped end plate 38 are provided.
[0039]
Further, a plurality of bolt insertion holes 44 communicating with a plurality of screw holes 29 formed in the flange 28 and a plurality of bolt insertion holes 35 formed in the drive wheel 22 are formed in the peripheral portion of the fitting portion 43. Has been.
[0040]
4 and 5, both the disc-shaped end plates 38 are attached to and detached from the drive wheel 22 in a state where the drive shaft 23 is fitted in the fitting portion 43 of the fitting recess 41, respectively. Each bolt hole 35 formed in the driving wheel 22 and each screw hole 29 formed in the flange 28 from each bolt insertion hole 44 formed in the both disc-shaped end plates 38. A plurality of fixing bolts 45 are inserted and screwed to each other, and the both driving wheels 22 can be attached to and removed from both the flanges 28 by the fixing bolts 45. It is fixed.
[0041]
In addition, the outer peripheral surface of each harvested product extrusion bar 39 is covered with an elastic material 46. Each of the harvested product extrusion bars 39 is formed of a round bar.
[0042]
Further, the disc-shaped end plates 38 that are fixed to the drive wheels 22 at both ends of the drive shaft 23, and the harvesting that is fixed in parallel with a gap between the peripheral portions 40 of the disc-shaped end plates 38. The harvested product extruding body 37 is formed as a unit that is detachably fixed to the drive wheels 22 at both ends of the drive shaft 23 by the product pushing rod 39.
[0043]
Next, as shown in FIGS. 1 and 4, the chute 5 is attached to the opposing plate-like side frame 9 in a state of being spaced from the carry-out side turn-up portion 47 of the transport surface of the endless transport body 25 at a predetermined interval. It is fixed.
[0044]
And the said chute | shoot 5 has the space | interval which sifts out the soil in the axial direction of this fixed rod 48 to the fixed rod 48 fixed between the rear-end parts of the said plate-shaped side frame 9 which opposes. The guide rods 49 are juxtaposed and fixed, and these guide rods 49 protrude rearward from the fixed rod 48, respectively.
[0045]
Further, the guide side plates 50 for guiding the harvested product carried on the chute 5 in the direction toward the guide rod 49 at the middle portion of the chute 5 are fixed to the rear end portions of the plate-like side frames 9 facing each other. Yes.
[0046]
Next, as shown in FIGS. 1 and 2, a pulley 51 is fixed to one end of the drive shaft 23 of the conveyor 4, and a pulley 52 is fixed to one end of the output shaft 12 protruding from the main frame 6. An endless belt 53 is wound around a pulley 51 at one end of the drive shaft 23 and a pulley 52 at one end of the output shaft 12.
[0047]
A tension roller 54 engaged with the endless belt 53 is rotatably supported on the plate-like side frame 9, and the tension roller 54 is supported by a coil spring 55 in a direction in which the endless belt 53 is always tensioned. It is energized.
[0048]
Then, the output from the output shaft 12 rotates the drive shaft 23 via pulleys 51 and 52 and an endless belt 53, and the endless transport body 25 is driven by drive wheels 22 fixed to both ends of the drive shaft 23. The transport surface of the endless transport body 25 is moved rearward and upward.
[0049]
In the figure, 56 is a grounding body attached to the opposing plate-like side frames 9 so that the position thereof can be adjusted in the vertical direction. These grounding bodies 56 are formed by sled bodies that come in contact with the ground and slide on the ground. ing.
[0050]
Next, the operation of the embodiment will be described.
[0051]
The lower pins 17 provided on the left and right lower arms 15 of the excavator 1 are respectively connected to the left and right lower links of the tractor, and the top pins 18 provided on the top arm 16 of the excavator 1 are connected to the top links of the tractor. The input shaft 11 of the mission device 7 provided in the excavator 1 is connected to the PTO shaft of the tractor.
[0052]
Next, the excavator 1 is pulled by the tractor, and the input shaft 11 of the mission device 7 is rotated by the output from the PTO shaft of the tractor, and the output shaft 12 is rotated by the input shaft 11, and the output shaft The drive shaft 23 of the conveyor 4 is rotationally driven by the output from 12 via the endless belt 53, and the endless transport body 25 of the conveyor 4 is rotated by the drive wheels 22 fixed to both ends of the drive shaft 23. The transport surface of the transport body 25 is moved rearward and upward.
[0053]
In this state, the digging body 3 proceeds while digging up the soil, and the digging body 3 sequentially digs the harvest A from the soil, and the digging body 3 digs up. The harvest A is sequentially carried from the excavated body 3 onto each transport rod 24 on the transport surface of the endless transport body 25 of the conveyor 4, and from between each of the transport rods 24 by each transport rod 24 of the endless transport body 25. The harvest A is conveyed while sieving the soil.
[0054]
In addition, the harvested product A, which has been sequentially transferred from the excavated body 3 onto the transport rods 24 of the endless transport body 25 of the conveyor 4, is transported to the peripheral surface of the crop extrudate 37 while being sandwiched between the transport rods 24. Then, as shown in FIG. 6, the crop A sandwiched between the transport rods 24 by each crop push bar 39 of the crop extrudate 37 is pushed out between the transport rods 24. These harvested products A are smoothly carried out onto the chute 5 from the carry-out side folding portion 47 of the endless transport body 25, and the harvested product A is discharged from the chute 5 to the ground.
[0055]
At this time, each crop push bar 39 of the crop push body 37 moves endlessly at each crop push bar 39 by moving in a state where it is positioned between each transport rod 24 turning around the drive shaft 23. The harvested product A transported in a state of being sandwiched between the transport rods 24 of the transport body 25 is reliably pushed out from between the transport rods 24.
[0056]
For this reason, when transporting non-spherical harvested products A such as flat-shaped make-ins and bulbs, which are easily caught between the transport baskets 24, non-spherical harvests sandwiched between the transport baskets 24 The product A is reliably pushed out from between the transport rods 24 by the respective crop extrusion rods 39 of the harvest product extrudate 37, and the crop A is fixed to the chute 5 at the unloading side folding portion 47 of the endless transport body 25. The crop A is not damaged by the impact due to the contact with the 48, and the crop A is between the transport surface that folds and moves the unfolding-side folding portion 47 of the endless transport body 25 and the fixed basket 48 of the chute 5. Can be reliably prevented from being drawn.
[0057]
In addition, the soil sieved from between the transport rods 24 of the endless transport body 25 is more surely screened from between the harvest push rods 39 of the crop extrudate 37, and the periphery of the crop extrudate 37 is It is possible to reliably prevent the movement of the endless transport body 25 with the soil that is screened from between the transport rods 24 without the soil being screened from between the transport rods 24 being accumulated on the surface.
[0058]
Next, the drive shaft 23 of the conveyor 4 has flanges 28 at both ends of the drive shaft 23. The drive wheel 22 protrudes from the peripheral portion 30 of the drive wheel 22 and engages with the conveying rod 24. Each of the flanges 28 has an engaging claw 31 for moving the conveying rod 24 and a radial fitting recess 32 opened in the peripheral portion 30, and the drive shaft 23 is fitted in the fitting recess 32. The drive wheel 22 is detachably secured to the drive shaft 23 so that the drive shaft 23 is supported on the inner side of the carry-out side folded portion 47 of the endless transport body 25 while the drive shaft 23 is pivotally supported. The drive wheel 22 is easily fitted through the fitting port 33 of the 32, and the drive wheel 22 is securely fitted to the flange 28 of the drive shaft 23 in a state where the drive shaft 23 is fitted in the fitting portion 34 of the fitting recess 32. It is fixed to.
[0059]
Further, when the drive wheel 22 is rotated by the drive shaft 23, the engaging claws 31 protruding from the peripheral portion 30 of the drive wheel 22 are sequentially engaged with the transport rods 24 of the endless transport body 25, and these engagements. The conveyance hooks 24 of the endless conveyance body 25 are sequentially and reliably moved by the pawl 31.
[0060]
Further, when an unexpected situation occurs in the drive wheel 22 such that the engaging claw 31 protruding from the peripheral edge of the drive wheel 22 breaks, the drive shaft is positioned inside the carry-out side folding part 47 of the endless transport body 25. By pulling out the drive wheel 22 from the drive shaft 23 with the shaft 23 still supported, the drive wheel 22 can be easily attached and detached.
[0061]
Next, the disc-shaped end plates 38 in which the harvested product extrusion rods 39 are arranged and fixed between the peripheral portions 40 have radial fitting recesses 41 opened in the peripheral portions 40 of the disc-shaped end plates 38, respectively. In the state where the drive shaft 23 is fitted in the fitting portion 43 of the fitting recess 41, the drive wheel 22 is detachably fixed to the inside of the carry-out side folded portion 47 of the endless transport body 25. With the drive shaft 23 positioned and pivotally supported, the disk-shaped end plates 38 are simply fitted to the drive shaft 23 from the fitting ports 42 of the fitting recess 41, and the fitting recess 41 is fitted. With the drive shaft 23 fitted in the joint portion 43, the disk-shaped end plates 38 are securely fixed to the drive wheels 22 fixed to the flanges 28 of the drive shaft 23, respectively.
[0062]
In addition, the disk-like end plates 38 are easily fitted to the drive shafts 23 located inside the carry-out side folding portion 47 of the endless transport body 25 of the conveyor 4 provided in the existing excavator 1, respectively. When the drive shaft 23 is fitted in the fitting portion 43 of the mating recess 41, the disk-shaped end plates 38 are securely fixed to the drive wheels 22 fixed to the flanges 28 of the drive shaft 23, respectively.
[0063]
Then, the fixing bolts 45 are respectively inserted from the respective bolt insertion holes 44 of the disc-shaped end plate 38 into the respective bolt insertion holes 35 of the drive wheel 22, and the fixing bolts 45 are inserted into the respective screw holes 29 of the flange 28. By fastening, the drive wheel 22 and the disc-shaped end plate 38 are securely fixed to the flange 28 of the drive shaft 23.
[0064]
Further, by pulling out each fixing bolt 45, the drive wheel 22 and the disc-shaped end plate 38 can be easily removed from the flange 28 of the drive shaft 23. Further, the drive wheel 22 and the disc-shaped end plate 38 are fastened to the flange 28 of the drive shaft 23 with the respective fixing bolts 45, so that the drive wheel 22 and the disc-shaped end plate 38 with respect to the flange 28 of the drive shaft 23 are secured. The attachment / detachment / replacement is simple, the number of parts is small, and the productivity can be improved.
[0065]
Further, the harvested product extrudate 37 is formed as a unit, and the disc-shaped end plates 38 at both ends of the harvested product extrudate 37 can be easily attached to and detached from both drive wheels 22, so the kind of the harvested product A Even if the interval between the transport rods 24 of the endless transport body 25 is changed according to the size, it is located between the transport rods 24 according to the interval between the transport rods 24 of the endless transport body 25 The harvested product extruding body 37 having the harvested product pushing rod 39 moving in a state can be easily attached and detached.
[0066]
Next, by covering the outer peripheral surface of each harvest push bar 39 of the harvest extrudate 37 with an elastic material 46, each harvest push bar 39 is sandwiched between each transport rod 24 of the endless transport body 25. When the harvested product A conveyed in the state is pushed out, the harvested product A is pushed out from between the transporting baskets 24 without damaging the harvested product A by the elastic material 46 covering the outer peripheral surface of each harvested product extrusion rod 39. be able to.
[0067]
【The invention's effect】
According to the invention 請 Motomeko 1, further attrition soil to be screened out from between the respective conveying rods endless carrier from between the crop push rod crops extrudate, the peripheral surface of the crop extrudate It is possible to reliably prevent accumulation of soil that is sifted out from between the transport baskets, and the harvested products that are transported in the state of being sandwiched between the transport rods by the harvest push rods of the crop extrudate. It can be pushed out from between the transport baskets reliably, and the harvested product can be smoothly transported from the endless transporter onto the chute, and the harvested product is in contact with the chute while sandwiched between the transport baskets. It is possible to reliably prevent the harvest from being damaged. In addition, the drive wheel can be easily fitted to the drive shaft in a state in which the drive shaft is pivotally supported inside the carry-out side folded portion of the endless transport body, and the drive shaft can be fitted to the flange of the drive shaft with the drive shaft fitted. The drive wheels can be securely fixed, and the transport rods of the endless transport body can be reliably moved by the engaging claws protruding from the peripheral edge of the drive wheels. Also, when an unexpected situation occurs in the drive wheel, such as the engaging claw protruding to the peripheral surface of the drive wheel breaks, the drive shaft is inserted into the carry-out side folded portion of the endless transport body, and the drive wheel is inserted. The wheel can be easily attached and detached.
[0068]
According to the invention of claim 2 , in addition to the effect of the invention of claim 1, in a state where the drive shaft is pivotally supported inside the carry-out side folded portion of the endless transport body, a disk-shaped end plate is respectively attached to the drive shaft. The disk-like end plates can be securely fixed to each other, and the disk-shaped end plates can be securely fixed to the drive wheels fixed to the flanges of the drive shaft in a state where the drive shaft is fitted. In addition, the disc-shaped end plate can be easily fitted to the drive shaft that is pivotally supported on the inside of the carry-out side folding part of the endless conveyor of the conveyor provided in the existing excavator, and this drive shaft is fitted. In this state, the disk-like end plates can be reliably fixed to the drive wheels fixed to the flange of the drive shaft, and the performance of the existing excavator can be improved.
[0069]
According to the invention of claim 3 , in addition to the effect of the invention of claim 1 or 2 , when extruding the crop conveyed in a state sandwiched between the conveyance rods of the endless conveyance body with the harvest push rod, The harvested product can be reliably pushed out from between the transporting rods without damaging the harvested product with the elastic material covering the outer peripheral surface of the harvested product pushing rod.
[Brief description of the drawings]
FIG. 1 is a plan view of a digger showing an embodiment of the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is a partial exploded enlarged perspective view showing a drive unit for driving the endless transport body.
FIG. 4 is a partial enlarged plan view showing the assembled state.
FIG. 5 is a side view of the same as above.
FIG. 6 is an explanatory view showing a state in which the harvested product is pushed out.
[Explanation of symbols]
3 digging body 4 conveyor 5 shout
21 Rotating wheel
22 Drive wheels
23 Drive shaft
24 Transport rod
25 Endless carrier
28 Flange
31 engaging claw
32, 41 Mating recess
37 Extruded crop
38 Disc end plate
39 Crop Extrusion Bar
46 Elastic material A Harvest

Claims

A digging body for digging the harvested product, a conveyor for transporting the harvested product digged in the digging body, and a chute for discharging the harvested product carried from the conveyor,
The conveyor has a rotating wheel rotatably provided at both ends on the rear end side of the digging body, and a drive that is rotatably provided at the rear of the rotating wheel and has driving wheels fixed to both ends. An endless transport body having a shaft, and a transport rod arranged in parallel with an interval between which the rotary wheel and the drive wheel are wound around and moved by the rotation of the drive wheel to remove the soil,
Provided with a harvested product extrusion body for extruding the harvested product sandwiched between the transport rods of the endless transport body on the drive shaft,
The harvested product extrudate is fixed in parallel with a disk-shaped end plate fixed to each of the driving wheels fixed to both ends of the drive shaft, with a gap between the peripheral edges of the disk-shaped end plates. A harvest push bar located between each conveying rod that wraps around the drive shaft,
The drive shaft has a flange on both ends of the drive shaft, said drive wheel engaging claw and the opening to the periphery to engage with the protruding said conveying rod from the periphery to move the conveying rod butoxy respectively have a radial fitting recess, drilling you wherein said state fitted to the drive shaft that removably securing the drive wheel to the flange to the fitting recess.

The disc-shaped end plates in which the crop push rods are juxtaposed between the peripheral portions have radial fitting recesses opened in the peripheral portions, and the drive shaft is fitted in the fitting recesses. photo machine according to claim 1 Symbol mounting, characterized in that removably fastened to the drive wheel in.

The digging machine according to claim 1 or 2 , wherein the outer peripheral surface of the harvest extruded bar is covered with an elastic material.