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JP3907311B2 - Bean cutter - Google Patents
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JP3907311B2 - Bean cutter - Google Patents

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JP3907311B2
JP3907311B2 JP10575198A JP10575198A JP3907311B2 JP 3907311 B2 JP3907311 B2 JP 3907311B2 JP 10575198 A JP10575198 A JP 10575198A JP 10575198 A JP10575198 A JP 10575198A JP 3907311 B2 JP3907311 B2 JP 3907311B2
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frame
tractor
shaft
pipe body
girder
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JPH11275928A (en
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芳雄 佐藤
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株式会社 イダ
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Description

【0001】
【発明の属する技術分野】
本発明は、トラクタの一方の外側方に前進方向に沿って左右および前後方向に間隔をあけて円盤回転刃を配設するとともに、これらを後方に旋回・固定可能にした2畦の豆刈機に関する。
【0002】
【従来の技術】
従来の豆刈機として、たとえば実公平6−27053号公報に示されているように、トラクタの一方の外側方に連結枠を介し2枚の円盤回転刃を前後方向および横方向に間隔をあけて配置し、2畦を一度に刈取り可能にした豆刈機がある。そして、この豆刈機は、畦の高さが不揃いの場合には、高さ調節のためのコントロールアクチュエータを利用し、円盤回転刃が畦の断面形状に従って畦の表面を自在に動きながら刈取りができる構成である。
【0003】
また特開平9−224450号公報には、弾性的に上下動する平行四辺形リンクの前部リンクに軸筒を縦設し、この軸筒の頂面に油圧モータを設け、この油圧モータで回転される回転軸を前記軸筒内に軸支し、この回転軸の下端に円盤回転刃を取付け、畦の起伏に円盤回転刃が順応して刈取りができる豆刈機が示されている。
【0004】
上述のようにトラクタの一方の外側方に装着する豆刈機は、トラクタの運転者が運転席から刈取り状態を見ながら作業できる点が好ましい。一方、豆茎の刈取りを良好にするには、円盤回転刃を前進方向に対しわずかに前傾させるとともに、刈倒す側にわずかに傾斜させるとよいことが知られている。また畦の表面は必ずしも平坦ではないので、円盤回転刃が畦の高低に順応しなければ、切断状態の好適が得られないこともよく知られている。
【0005】
【発明が解決しようとする課題】
前述のように、トラクタの一方の外側方に装着する豆刈機は作業上好ましいが、トラクタを含めた幅が大きくなるために、移動時における走行に支障があるという問題点があつた。また円盤回転刃が畦の高低に自動的に順応して刈取りができ、トラクタに容易に着脱できる豆刈機が要望されている。
【0006】
本発明は、上記の点に鑑み、トラクタの外側方に装着できるとともに、これを後方に旋回・固定可能にすることによっトラクタの幅からの張出しを少なくすることでき、畦の高低に自動的に順応して刈取りができ、トラクタへの着脱が容易な豆刈機を提供することを目的としている。
【0007】
【課題を解決するための手段】
上記目的を達成するために、本発明においては、トラクタの後部に着脱自在に装着し一端部をトラクタの外方に突出する連結枠を設け、トラクタの一方の外側方に前進方向に沿い前方に突設する縦桁を備え、前記連結枠の突出端部に旋回フレームを前、後方に旋回・固定自在に枢着する。そして前記縦桁の前端部にその後端部を横軸回りに枢着し、油圧を介し上下動自在にした中間桁を前方に突設し、前記中間桁の前端部に左右揺動連結体で先端フレームを結合する。この先端フレームから前後および左右間隔を調節可能に地表に向け弾性的に上下動自在にし、前、後方位置に円盤回転刃を設ける。これら左右の円盤回転刃の前方には分草器を設け、後方には刈高調節輪を設ける。前記左右の円盤回転刃の左右間隔の中央部に前記先端フレームから直桁を前方に突設し、この直桁の前端部に昇降自在に前部高低調節輪を設ける。前記連結枠の後部に油タンクを設け、この油圧タンクに油圧ポンプを設け、前記左右の円盤回転刃を油圧回転させるものにした。
【0008】
前記中間桁を、前記縦桁の前端部と中間桁に立設する腕板との間に油圧シリンダを架設し、この油圧シリンダにより枢着回りに上下動するものにした。
【0009】
前記左右揺動連結体は、前記中間桁上に中間桁と平行に段付軸を固着し、前記先端フレームの基端部に前記段付軸の小径部を抜け止めをして軸支する軸受を固設し、この軸受を左右に制限的に回動できるものにしたものである。
【0010】
前記先端フレームから前方突設する直桁の前端部に高低調節可能に角パイプ体を縦設し、上端面に昇降表示棒を立設する角軸を前記角パイプ体に昇降自在に内嵌し、昇降表示棒を角パイプ体から上方に突出させ、角パイプ体の上部には昇降表示棒と平行に昇降ゲージを設ける。そして前記角パイプ体および角パイプ体から下方に突出する角軸部分に、バッテリーシリンダの上端部および下端部をそれぞれ取付け、角軸の下端部に旋回自在に設けた車輪ヨークに前部高低調節輪を軸支し、豆刈機の高低を調節できるようにした。さらに、油タンクの左右両側に設ける支持脚を、倒立し固定できるものにした。
【0011】
【発明の実施の形態】
本発明の豆刈機における連結枠は、トラクタ後部の三点リンクヒッチに水平に連結し、トップリンクをブレースで固定し油圧昇降を止め、一方の端末部(通常は右側端末部)をトラクタの後車輪よりも外方に突出させる。この突出端部に前後に旋回、固定自在に旋回フレームを枢着する。旋回フレームは、旋回横桁と直交に縦桁を固着し、この縦桁をトラクタの前進方向に沿って前方に突出させて旋回横桁を前記連結枠に固定するとともに、旋回横桁を後方に180度旋回し前記連結枠にピン等で止めるものにする。
【0012】
中間桁は、前記の縦桁の前端部に後端部を横軸回りに枢着し、前方に突出する。さらに縦桁の前端部と中間桁の中間部に立設する腕板との間に油圧シリンダを架設し、この油圧シリンダにより前記中間桁を前記横軸回りに上下動させる。前記油圧シリンダは、ピストン縮退時に油圧が働き中間桁の前端部を上昇させ、油圧を抜くと中間桁の前端部が自重下降するものにした。
【0013】
中間桁の先端部に先端フレームを左右揺動連結体で連結する。左右揺動連結体は、中間桁の前端部に中間桁と平行に固設した段付軸の小径部を、先端フレームの後端部に固設する軸受に内嵌し抜け止めをするものであり、前記中間桁上の段付軸に対し前記軸受が回転し、先端フレームが中間桁に対し左右に揺動できる構成である。また前記軸受の回転を、軸受の左右に螺着するボルトの下端面を間隙を介し中間桁上に固設する座板に当接させ、前記間隙の調節によって軸受の左右揺動量を変えるようにした。
【0014】
左側の円盤回転刃を、トラクタの右側車輪が豆列畦間の中央部を走行して右側の豆畦上の豆茎を切断できる位置に設ける。また左右の円盤回転刃の中心間隔は、円盤回転刃の前進方向に対する内側周縁で豆茎を刈取るので、豆列畦間より若干広くする。前記先端フレームの左右に突設する横桁から左右および前後の間隔を調節可能にそれぞれ平行四辺形リンクを前方に突設し、この平行四辺形リンクを上方からスプリングを介し吊下げる。また前記平行四辺形リンクの上、下リンクが接するガイドを設け、平行四辺形リンクの最下降位置を前記ガイドの下部に設ける長孔の下縁に当接する突片で決めるようにした。
【0015】
前記平行四辺形リンクの前部リンクの前面に地表に向け軸筒を縦設し、前記軸筒の頂部に油圧モータを取付け、油圧モータの出力軸に回転軸を接続し軸筒内に軸支する。前記回転軸は下端部を軸筒下端面より下方に僅かに突出させ、この突出端に円盤回転刃の中心部を着脱可能に取付ける。円盤回転刃の前方には、前記軸筒から前方に分草器を突設し、円盤回転刃の後方には、前記平行四辺形リンクの前部リンクの下端部から後方にアームを突設し、このアームの後端部に前進方向に沿って高低調節可能に刈高調節輪を設ける。
【0016】
また左右の円盤回転刃の中央部に先端フレームから直桁を前方に突設し、この直桁の前端部に縦設する角穴体に角パイプ体を高低調節可能に挿通する。そしてこの角パイプ体に、上端面に昇降表示棒を立設する角軸を昇降自在に内嵌するとともに、昇降表示棒を角パイプ体から上方に突出させる。バッテリーシリンダの上端部および下端部をそれぞれ前記角パイプ体および角パイプ体から下方に突出する角軸の部分に取付け、バッテリーシリンダにより角パイプ体内で角軸を昇降させ、角軸の下端部に旋回自在に取付ける車輪ヨークに軸支する前部高低調節輪を昇降させる。前記角パイプ体の上部に昇降表示棒と平行に昇降ゲージを立設し、トラクタの運転席から昇降ゲージに対する昇降表示棒の上端位置を見て、前部高低調節輪の昇降量を知るようにした。
【0017】
前記連桁枠の後部に油タンクを設け、この油タンクの底板の下方に設ける油圧ポンプに油タンクより油を供給し、油圧ポンプをトラクタのPTO軸に結合する自在継手軸を介し回転し、発生する油圧を前記油圧モータに循環させ、円盤回転刃を回転させるようにした。連結枠をトラクタから容易に着脱できるようにするために、油タンクの左右両側に支持脚を設け、この支持脚の上端部を油タンクの下部両側のブラケツトに枢着し、それぞれ外回りに倒立し固定できるものにした。
【0018】
【実施例】
次に実施例について図面を参照して説明する。図1は本発明豆刈機をトラクタに装着した平面図、図2は同じく左側面図である。これらの図において、1は連結枠であり、トラクタTの後車輪より一端が右方に突出する横桁2を、トラクタの油圧三点リンクヒッチの下部リンク7、7の後端部に水平に連結し、横桁2上に立設する縦板4の上端部にトップリンク3の上端部をピン止めしている。そして横桁2の前面とトップリンク3の中間部との間にブレース5を掛け渡し、油圧三点リンクヒッチの上下動を固定している。6は、前記下部リンク7、7を連結するブラケツトであり(図8参照)、角パイプの横桁2の左半分の箇所に左右に対向させて設けている。
【0019】
8は油タンクであり、横桁2の後部に突設する台枠10に載置している。9は油圧ポンプであり、油圧ポンプ8の底板の下方に固定され、トラクタのPTOに連結する自在継手軸117(図8参照)に接続する図示省略のチーエン伝動機構を介し回転されるようになっている。11は送油ホース連結口、12は戻り油ホース連結口であり、油タンク8の上面に設けている。13、14は、油タンク8の左右両側に倒立自在に設ける支持脚であり、豆刈機をトラクタから外すときには下方に旋回して地上に立て、豆刈機をトラクタに取付けた時には倒立し、固定しておくようになっている。
【0020】
17は旋回フレームであり、旋回横桁18の右端部に縦桁20を直交に固着し、旋回横桁18の左端部を横桁2の右側端末部後面に固着するコ形ブラケツト15に縦ピン16で枢着したとき、縦桁20がトラクタの前進方向に沿って前方に突出するようになっている。25は、縦桁20の前端部から後方に斜設したブレースであり、端末を横桁2の右端部前面に突設する突片21に縦ピン23で止め、前方に突出する縦桁20の旋回を固定している。また旋回横桁18の先端部に突片19を上下に設け、旋回横桁18を縦ピン16回りに後方へ180度旋回し、上下の突片19の間を横桁2の後面に固着した突片22に外嵌し縦ピン24で固定すると、縦桁20が前進方向に沿って後方突出に固定されるようになっている(図3参照)。
【0021】
そして縦桁20の前端部にU形ブラケツト27を固着し、U形ブラケツト27内に中間桁29の後端部を入れ横ピン28で枢着する。中間桁29の中間部に腕板31を左右対向に立設し、縦桁20の前端部に左右対向に立設するブラケツト26との間に油圧シリンダ30を架設する。油圧シリンダ30には、トラクタの油圧ポンプに連結する油圧ホース32を介し油圧を供給する。油圧シリンダ30は縮退に油圧が作用し、中間桁29の前端部が横ピン28回りに上昇し、油圧を抜くと中間桁29が自重で下降するようになっている。
【0022】
34は先端フレームであり、後端が中間桁29の前端と小間隙を隔てて対向し、中間桁29に後述の左右揺動連結体33で連結され、前進方向に沿って前方に突設されている。先端フレーム34は、前端部に左右に突出する横桁35を水平に固着している。36は横桁であり、先端フレーム34の中間部に外嵌するコ字枠金38の右側に一端が固着され、先端フレーム34の右側に水平に突設されている。コ字枠金38は、上下面にねじ棒40をコ字枠金38と直交に固着し、ねじ棒40の先端部をコ字枠金38の開口側に突出している。39は、ねじ棒40が挿通する孔を上下に設けたプレートである。コ字枠金38は、開口部を先端フレーム34に外嵌し、ねじ棒40にプレート38の上下の孔を嵌め、ねじ棒40にナットを螺着して締付け、先端フレーム34に前後に移動して固定する構成である。なお、以下の説明におけるコ字枠金は、コ字枠金38と同様の構成である。
【0023】
37は横桁であり、先端フレーム34前端部の横桁35の前方に前進方向と直交させ水平に設けられている。先端フレーム34の中間部で、コ字枠金38の取付位置を前後させ、横桁36と横桁37との前後間隔を豆列畦間を標準に変えることができるようになっている。41は、横桁36に外嵌し左右にスライドして固定するコ字枠金である。42は、横桁37にスライドして固定するコ字枠金である。43は平行四辺形リンクであり、コ字枠金41、42の前部に取付けそれぞれ前方に突設している。
【0024】
さらに図6も参照し説明すると、平行四辺形リンク43の後部リンク44の上部から前方にブラケツト45を突設し(図2参照)、ブラケツト45の前端部を貫通して取付けたアイボルト46の下端部に、コイルスプリング47の上端部を取付け、コイルスプリング47の下端部を平行四辺形リンク43の下部リンクに結合し、平行四辺形リンク43をブラケツト45に弾性的に吊下げている。
【0025】
48はガイド板であり、上端部をブラケツト45にボルト止めし、側面が平行四辺形リンク43の上部および下部のリンクの側面に摺接し、上部および下部リンクが上下動する際の案内になつている。またガイド板48は下半部に長孔49が設けられ、平行四辺形リンク43の下部リンクに固設した突片50が長孔49に嵌合している。そして長孔49の下縁に突片50が当接すると(図4参照)、平行四辺形リンク43がそれ以上下降しないようになっている。すなわち、本発明豆刈機を圃場の端末等で、図4のように上昇させた時、平行四辺形リンク43の下降限度をきめている。
【0026】
左側および右側の平行四辺形リンク43の前部リンク44aにブロック体51を取付け、ブロック体51の前部に軸筒52の中央部を取付けるとともに、前進方向へ約5度前傾させている。また軸筒52は、左側に配設のものを左傾させ、右側に配設のものを右傾させ、地表に向けて設けている。左右への傾斜角は正面視で約5度である。軸筒52を前傾および左右に傾斜させるのは、円盤回転刃54、55が豆茎を良好に切断できるようにする公知の手段である。軸筒52は、鋼管を用い、長さが大豆等の草丈より若干長い約70cmである。
ブロック体51は、前記の前傾、左傾および右傾に対応するように前部リンク44aに取付けられている。
【0027】
53、53は油圧モータであり、左、右の軸筒52の上端面に固着したフランジの上面にそれぞれ固設し、図示省略の出力軸が軸筒52内に突出している。この出力軸に上端を連結した回転軸を軸筒52内に軸支し、軸筒52の下端面からわずかに突出する回転軸の下端部に、円盤回転刃54、円盤回転刃55をそれぞれ取付けている。また、左側の油圧モータ53は、円盤回転刃54を左回りに回転させ、右側の油圧モータ53は円盤回転刃55を右回りに回転させるようになっている。この円盤回転刃54、55の回転によって、円盤回転刃と共回りする土砂を前進方向に対しそれぞれ外方に飛散させ、畦間に刈倒す豆作物にはかからないようになっている。左右の軸筒52には分草器取付体56を介して左側分草器取付板57、右側分草器取付板58を取付けている。
【0028】
右側分草器取付板58に取付棒62、63により滑走板61を固着し、右側分草器60を円盤回転刃55の中央部前方に前進方向に沿って突設している。64、65は案内棒であり、刈取った豆茎を前進方向の左側に倒すように滑走板61から後方に斜設している。同様に左側分草器取付板57にも左側分草器59を円盤回転刃54の中央部前方に前進方向に沿って突設し、刈取った豆茎を前進方向の右側に倒すように案内棒を設けている。すなわち、左右の円盤回転刃54、55で刈取られた2畦の豆茎が、左側および右側の分草器59、60によって畦間に倒されるようになっている。
【0029】
66はスクレーパであり、下縁が円盤回転刃54、55の後部中央部とそれぞれ小間隙を介して対向し、円盤回転刃の表面を清掃するように、軸筒52の下端部後面から後方に取付けられている。67はアームであり、平行四辺形リンク43の前部リンク44aの下部から前進方向に沿って後方へ水平に突設し、後端部に刈高調節輪68を円盤回転刃54、55の後方に設けている。
【0030】
刈高調節輪68の取付構造について説明すると、図6において、98は角穴体であり、アーム67の後端部に垂直に固設されている。99は角軸であり、角穴体98に昇降自在に内嵌し、上端面に上部突片100を水平に固設し外方に突設している。102は中間部突片であり、上部突片100の下方においてアーム67の外側面から外方に突設している。101はボルトであり、上方から上部突片100の先端部を貫通してナットが螺着され、下端部が中間部突片102に螺着され、前記ナットを緩めて左右に捻回すると中間部突片102に対し上部突片100が上下し、角軸99が角穴体98内で昇降するようになっている。103は軸受板であり、上端部が角軸99の下端部に固着され、刈高調節輪68を円盤回転刃55の中央部後方に軸支104している。105は刈高調節輪68外周の土落しである。すなわち、刈高調節輪68は、ボルト101の左右捻回によって角軸99が昇降し、円盤回転刃55の地表に対する高さを調節することができるものである。
【0031】
図1において、69は供給油圧ホースであり、油タンク8の送油ホース連結口11と右側の油圧モータ53の吸入口との間に配設されている。70は中間油圧ホースであり、右側の油圧モータ53の吐出し口から左側の油圧モータ53の吸入口に連結され、右側の油圧モータ53から左側の油圧モータ53に圧油を供給する油圧ホースである。71は戻り油圧ホースであり、左側の油圧モータ53の吐出し口から油タンク8の戻り油ホース連結口12に連結されている。すなわち、油圧ポンプ9から右側の油圧モータ53、左側の油圧モータ53、油タンク8へ圧油が直列に循環するようになつている。
【0032】
次に図7は、円盤回転刃取付部の要部破断面図である。同図において、106は回転軸であり、下端部を段部を介し大径部107にし、さらにその下端部をフランジにしている。軸筒52の下端部の内側に玉軸受108を内嵌し、大径部107より上方の軸部を軸支している。109は、玉軸受98の下方において軸筒52に内嵌した防塵シールである。大径部107の中心部には、下方から上方に後述のねじ棒111を螺着する雌ねじ部が設けられている。110は座金であり、中心部上面にねじ棒111を直立に突設し、さらに中心部上面に左右の円盤回転刃54、55中心部の丸孔が丁度はまる円形突起を形成している。
【0033】
大径部107の下底面には、前記円形突起が嵌入する円形凹所を設けている。左、右の円盤回転刃54、55は、中心部の丸孔を座金110の円形突起に外嵌し、ねじ棒111を大径部107の雌ねじ部に下方から螺着して締付け、回転軸107の下端に取付けられている。ねじ棒111と大径部107の雌ねじ部のねじ方向は、円盤回転刃の回転によって締まる方向である。円盤回転刃54、55は外径35cm、丸鋸歯形状である。
【0034】
図1、図2において、72は直桁であり、横桁35に横方向に位置調節可能に外嵌固定するコ字枠金に基端部を固着し、前進方向に沿って前方に突設している。直桁72は角パイプ製であり、1本ものでも差支えないが、基端部に先端部を内嵌し伸縮可能にしている。図10も参照して説明すると、73は角穴体であり、直桁72の先端に直桁72と直交に中央部を固着している。74は角パイプ体であり、角穴体73に挿通し止めねじ126、126で上下の位置を調節可能に固定されている。角パイプ体74には角軸75を摺動自在に内嵌し、角軸75の下端部を角パイプ体74の下端から下方に突出させている。
【0035】
角軸75は上端面が角パイプ体74の上端面との間に空隙を介して角パイプ体74に内嵌している。76は昇降表示棒であり、角軸75の上端面に垂直に立設し、角パイプ体74の上端面から上方に適当長に突出している。77は昇降ゲージであり、角パイプ体74の上端部に昇降表示棒76と平行に基端部固着している。昇降ゲージ77は、角パイプ体74内を昇降する角軸75上端部の昇降表示棒76の上端位置と比較し、角軸75の昇降状態をトラクタ運転席から容易に知るためのものである。
【0036】
78は車輪ヨークであり、角軸75下端部の丸軸部127が上面を貫通しカラー128で抜け止めされ、丸軸127回りに旋回できるように、角軸75の下端部に取付けられている。79は前部高低調節輪であり、車輪ヨーク78の下端部に軸支されている。129はアームであり、車輪ヨーク78の両側から前方に突設され、前端部に双翼板80を取付けている。双翼板80は、畦間に倒れている未収穫の豆茎が前部高低調節輪79で踏みつけられないように、左右にすき分けるものである。図1中の81はチゼル、82は中央分草棒、83は双翼板80の両側下縁に沿設した下部分草棒、130は土落しである。
【0037】
84は前部高低調節輪79を昇降するためのバッテリーシリンダであり、上部を取付板85で角パイプ体74の上部に取付け、シリンダの下部を角パイプ体74から下方に突出する角軸75の部分に取付板86で取付けている。バッテリーシリンダ84の電源は、豆刈機を装着するトラクタのバッテリである。87はコードであり、バッテリーシリンダ84のモータからスイッチレバー89を経てトラクタのバッテリに結合されている。スイッチレバー89は、トラクタの後車輪のフェンダー上に固設する台板88取付けられ、後方に倒すとバッテリーシリンダ84のシリンダが上昇し、前方に倒すとシリンダが下降し、中央位置でバッテリーシリンダ84が停止するように設けられている。
【0038】
94、95は、円盤回転刃54、円盤回転刃55の内側にそれぞれ前進方向に沿って突設する畦間分草具である。図6を参照し、畦間分草具95を説明すると、既に説明したブロック体51の内側面に角支柱90を立設し、角支柱90に上下位置調節自在に保持具91を取付けている。そして保持具91の左側面から左方へ横桁92を水平に突設し、横桁92に移動固定自在に保持具93を取付けている。保持具93は前後方向に角穴を備えており、この角穴に畦間分草具95のビームが前後方向に移動可能に取付けられている。畦間分草具95の下端部には、前進方向に沿って引起し棒97をほぼ水平に固着している。
【0039】
畦間分草具94は、左側の平行四辺形リンク43の前部に取付けたブロック体51の右側に畦間分草具95と同様に角支柱を立設し、この角支柱から右側に横桁を水平に突設し、この横桁に取付ける保持具93の角穴に前後方向に移動可能に取付けられている。畦間分草具94は、下端部に引起し棒96を前進方向に沿ってほぼ水平に固着している。畦間分草具94、95は、畦間に倒れた豆茎を引起し円盤回転刃54、55に誘導して切断されるようにするためのものであり、引起し棒96および97の後端部はそれぞれ円盤回転刃54および55の上方にのぞませている。
【0040】
次に図8において、油タンク8は左右両側の前後に横断面がコ字状のブラケツト112、113を固設している。右側のブラケツト112と113に支持脚13の上端部をはめ込み、左側のブラケツト113と図示省略のブラケツト112に支持脚14の上端部をはね込み、一点鎖線b,cのように外回りに上下可能に旋回中心軸114で止着している。そして支持脚13、14を下方に旋回し接地させたとき、止めピン115をブラケツト112、113の下端部と支持脚13、14の上端部に連通し、接地状態を保つようになっている。また止めピン115を引抜いて支持脚13、14を旋回中心軸114回りに上方へ旋回し、止め孔116と支持脚13、14の上端部に引抜いた止めピン115を連通させ、一点鎖線で示すように、支持脚13、14を上昇状態に保持できるようになっている。
【0041】
図9を参照し、左右揺動連結体33の構成について説明すると、中間桁29の前端部上方に小径部を有する段付軸118を中間桁29と平行に固設し、先端フレーム34の後端部上方に先端フレーム34と平行に固設した軸受119の後端面に段付軸118の段部を当接して前記小径部を軸受119で軸支し、軸受119からわずかに前方に突出する段付軸118の前端面にカラー120を止めねじ121で固設し、軸受119に対し段付軸118を抜け止めしている。すなわち、段付軸118回りに軸受119が回動し、先端フレーム34が左右に揺動する構成である。
【0042】
また軸受119の中間部両側から後方にひれ板122、123を水平に固着し、ひれ板122、123の後端部にボルト124を螺着し、中間桁29の前端部上面を横断して固着した座板125にボルト124の下端面が小間隙を介して対向させている。先端フレーム34の左右揺動量は、前記ボルト124の下端面と座板125との間隙を調節して加減することができるようになっている。
【0043】
図3は本発明の豆刈機をトラクタの後方に旋回した平面図であり、突片21から縦ピン23を抜いてブレース25の固定を解除し、旋回フレーム17をコ形ブラケツト15の縦ピン16回りにa−a矢印のように旋回し、旋回横桁18先端の突片19を突片22に縦ピン24で固定し、縦桁20を前進方向に沿った状態で後方に向け固定した状態である。縦桁20が上述の状態になると、縦桁20に連結された中間桁29、中間桁29に連結された先端フレーム34も後方に旋回される。先端フレーム34が後方旋回すると、旋回フレーム34に配設されている円盤回転刃54、55と左側分草器59、右側分草器60と前部高低調節輪79および畦間分草具94、95等が後方に旋回された状態になる。すなわち、豆刈機をトラクタの右側に突出する部分を少なくし、狭い路上での走行等に支障のない状態になる。
【0044】
図4は本発明豆刈機上昇時の左側面図であり、トラクタ運転者がトラクタから油圧シリンダ30に油圧を供給し、中間桁29の前端部を上昇させ、先端フレーム34を上昇した状態である。先端フレーム34の上昇により平行四辺形リンク43が上昇し、円盤回転刃54、55、左右の分草器59、60、畦間分草具94、95および前部高低調節輪79が上昇する。平行四辺形リンク43が上昇した時、上部、下部および前部リンク44aが後部リンク44に対し下方旋回するが、ガイド板48の長孔49の下縁に上部リンクに設けた突片50が当接し、平行四辺形リンク43の下降が止まるのである。
【0045】
図5は、図3のように、豆刈機をトラクタの後方に旋回し、旋回フレーム17を横桁2に固定し、油圧シリンダ30によって先端フレーム34を縦桁20に対し上昇した左側面である。この状態では、図3のように、トラクタの外側方に突出する部分がほとんどなくなるので、狭い路上での移動に何等支障がなくなるのである。
【0046】
【発明の効果】
本発明は、以上に説明した構成を備えるので、以下に記載されるような効果を奏する。
【0047】
トラクタの油圧三点リンクヒッチに上下動を固定的に連結枠を着脱自在に装着し、この連結枠の一端をトラクタの外側方に突出させた突出端部に後方へ旋回・固定できる旋回フレームを結合し、旋回フレームの縦桁の前方に油圧昇降する中間桁と先端フレームを順次に配設し、先端フレームに円盤回転刃、分草器、前部前部高低調節輪および畦間分草具等の刈取装置を設けたので、刈取装置を油圧によって容易に昇降させることができる。また縦ピンを抜き差しするという簡単な操作で、旋回フレームを後方に旋回し、豆刈機をトラクタから外方に突出する部分が少ないものにできるので、トラクタの側方に装着する豆刈機でありながら、移動時には路上走行等に支障のないものにすることができる。
【0048】
中間桁の前端部に左右揺動連結体を介し先端フレームを左右に揺動可能に連結したので、先端フレームに配設する円盤回転刃を自動的に豆畦の高低に順応させて好適な刈取りができる。また円盤回転刃の後方に高低調節可能に刈高調節輪を設けたので、円盤回転刃を地表に対し好適な豆茎切断位置にすることができる。
【0049】
豆刈機の前端部中央に畦間を走行しながらバッテリーシリンダにより昇降される前部高低調節輪を、トラクタの操縦席から高低調節可能に設けたので、豆刈機を容易に地表の高低に倣わせて的確な刈取りができる。また前部高低調節輪を下端部に取付ける角軸の上端に昇降表示棒を設け、前記角軸を内嵌する角パイプ体の上端部に前記昇降表示棒と平行に昇降ゲージを設けたので、昇降ゲージに対する昇降表示棒の高低をトラクタの運転席から見ることによって、前部高低調節輪の昇降状態を容易に知ることができる。
【0050】
トラクタに装着する前記連結枠の後部に設ける油タンクを、左右両側に倒立し固定できる支持脚を設けたものにしたので、豆刈機をトラクタから取外すときには支持脚を地表に立てることによって、容易にトラクタから取外すことができる。またトラクタに連結枠を装着したときには、支持脚を油タンクの両側に倒立し固定しておくことができるので、支持脚を刈取り作業に全く支障のないものにすることができる。
【図面の簡単な説明】
【図1】本発明の豆刈機をトラクタに装着した平面図。
【図2】同じく左側面図。
【図3】本発明の豆刈機をトラクタの後方に旋回した平面図。
【図4】本発明豆刈機上昇時の左側面図。
【図5】本発明豆刈機をトラクタの後方に旋回し上昇した左側面図。
【図6】刈取部付近の要部斜視図。
【図7】円盤回転刃取付部の要部破断面図。
【図8】要部の後方斜視図。
【図9】左右揺動連結体の要部を破断した分解斜視図。
【図10】要部を破断した一部分の正面図。
【符号の説明】
1 連結枠
2 横桁
8 油タンク
13 支持脚
14 支持脚
17 旋回フレーム
18 旋回横桁
20 縦桁
29 中間桁
30 油圧シリンダ
33 左右揺動連結体
34 先端フレーム
43 平行四辺形リンク
52 軸筒
53 油圧モータ
54、55 円盤回転刃
59、60 分草器
68 刈高調節輪
72 直桁
76 昇降表示棒
77 昇降ゲージ
79 前部高低調節輪
84 バッテリーシリンダ
94、95 畦間分草具
114 旋回中心軸
115 止めピン
118 段付軸
119 軸受
120 カラー
121 止めねじ
122、123 ひれ板
124 ボルト
125 座板
[0001]
BACKGROUND OF THE INVENTION
The present invention provides a two-row bean cutting machine in which disk rotary blades are disposed on one outer side of a tractor with a space in the left and right and front and rear directions along the forward direction, and these can be rotated and fixed rearward. About.
[0002]
[Prior art]
As a conventional bean cutting machine, for example, as shown in Japanese Utility Model Publication No. 6-27053, two disk rotary blades are spaced apart in the front-rear direction and the lateral direction via a connecting frame on one outer side of the tractor. There is a bean mower that can be arranged and trimmed 2 一度 at once. This bean cutter uses a control actuator for height adjustment when the height of the cocoons is uneven, so that the disk rotating blade can move freely along the surface of the cocoon according to the cross-sectional shape of the cocoon. It is a possible configuration.
[0003]
In Japanese Patent Laid-Open No. 9-224450, a shaft cylinder is provided vertically on the front link of a parallelogram link that moves elastically up and down, and a hydraulic motor is provided on the top surface of the shaft cylinder, which is rotated by this hydraulic motor. A bean cutting machine is shown in which a rotating shaft is pivotally supported in the shaft cylinder, a disk rotating blade is attached to the lower end of the rotating shaft, and the disk rotating blade adapts to the undulation of the ridge and can cut.
[0004]
As described above, the bean mower mounted on one outer side of the tractor is preferably such that the tractor driver can work while looking at the cutting state from the driver's seat. On the other hand, it is known that in order to achieve good harvesting of the bean stalk, it is preferable to slightly tilt the disk rotary blade forward with respect to the forward direction and slightly tilt it toward the side of cutting. Further, it is well known that the surface of the ridge is not necessarily flat, and the cutting state is not suitable unless the disk rotary blade adapts to the height of the ridge.
[0005]
[Problems to be solved by the invention]
As described above, the bean mower mounted on one outer side of the tractor is preferable in terms of work, but there is a problem in that traveling during movement is hindered because the width including the tractor becomes large. In addition, there is a need for a bean cutter that can automatically cut and rotate the disk rotary blade to the height of the ridge and can be easily attached to and detached from the tractor.
[0006]
In view of the above points, the present invention can be mounted on the outer side of the tractor and can be rotated and fixed rearward to reduce overhang from the width of the tractor. The purpose of the present invention is to provide a bean mower that can be cut and adapted to the tractor and can be easily attached to and detached from the tractor.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a connecting frame that is detachably attached to the rear portion of the tractor and has one end projecting outward from the tractor is provided, and forwardly along the forward direction on one outer side of the tractor. A projecting vertical girder is provided, and a pivot frame is pivotally attached to the projecting end portion of the connecting frame so as to be pivotable and fixed forward and backward. The rear end of the stringer is pivoted around the horizontal axis, and an intermediate beam that can be moved up and down via hydraulic pressure is projected forward. Join the tip frame. The front / rear and left / right distances can be adjusted from the front end frame to be elastically movable up and down toward the ground surface, and disk rotary blades are provided at front and rear positions. A weeder is provided in front of these left and right disk rotary blades, and a cutting height adjusting wheel is provided in the rear. A straight girder is projected forward from the front end frame at the center of the left and right interval between the left and right disc rotary blades, and a front height adjustment wheel is provided at the front end of the straight girder so as to be movable up and down. An oil tank is provided at the rear of the connection frame, and a hydraulic pump is provided in the hydraulic tank so that the left and right disk rotary blades are hydraulically rotated.
[0008]
The intermediate girder is constructed such that a hydraulic cylinder is installed between a front end portion of the vertical girder and an arm plate standing on the intermediate girder, and is moved up and down around the pivot by this hydraulic cylinder.
[0009]
The left and right swing coupling body has a stepped shaft fixed on the intermediate beam in parallel with the intermediate beam, and a small diameter portion of the stepped shaft is prevented from coming off at the base end portion of the distal end frame and is supported by the bearing. Is fixed, and this bearing can be limitedly rotated to the left and right.
[0010]
A square pipe body is vertically installed at the front end of a straight beam projecting forward from the front end frame so that the height can be adjusted, and a square shaft for erecting an elevating display bar on the upper end surface is fitted in the square pipe body so as to be movable up and down. The elevating display bar protrudes upward from the square pipe body, and an elevating gauge is provided on the upper part of the square pipe body in parallel with the elevating display bar. The upper and lower ends of the battery cylinder are respectively attached to the square pipe body and the square shaft portion projecting downward from the square pipe body, and a front height adjustment wheel is mounted on a wheel yoke that is pivotally provided at the lower end portion of the square shaft. The height of the bean mower can be adjusted. In addition, the support legs provided on the left and right sides of the oil tank can be fixed upside down.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The connecting frame in the bean cutter of the present invention is connected horizontally to the three-point link hitch at the rear of the tractor, the top link is fixed with braces, and the hydraulic lift is stopped, and one terminal (usually the right terminal) is connected to the tractor. Project outward from the rear wheels. A swivel frame is pivotally attached to the protruding end so as to be swiveled back and forth and fixed. The swivel frame has a vertical girder fixed orthogonally to the swivel cross beam, and the vertical cross beam protrudes forward along the forward direction of the tractor to fix the swivel cross beam to the connecting frame, and the swivel cross beam is moved backward. Turn 180 degrees and fix to the connecting frame with a pin or the like.
[0012]
The intermediate girder is pivotally attached around the horizontal axis to the front end of the vertical girder and protrudes forward. Further, a hydraulic cylinder is installed between the front end portion of the vertical beam and the arm plate standing at the intermediate portion of the intermediate beam, and the intermediate beam is moved up and down around the horizontal axis by the hydraulic cylinder. In the hydraulic cylinder, when the piston is retracted, the hydraulic pressure works to raise the front end of the intermediate beam, and when the hydraulic pressure is released, the front end of the intermediate beam is lowered by its own weight.
[0013]
The front end frame is connected to the front end portion of the intermediate girder by a left-right swing connecting body. The left-right swing joint is used to prevent a small diameter part of a stepped shaft fixed in parallel to the intermediate beam at the front end of the intermediate beam from being fitted into a bearing fixed to the rear end of the front end frame. The bearing rotates with respect to the stepped shaft on the intermediate beam, and the tip frame can swing left and right with respect to the intermediate beam. Further, the rotation of the bearing is brought into contact with a seat plate fixed on an intermediate girder through a gap with a lower end surface of a bolt screwed to the left and right of the bearing, and the amount of lateral swing of the bearing is changed by adjusting the gap. did.
[0014]
The disc rotating blade on the left side is provided at a position where the right wheel of the tractor can cut the bean stalk on the right side bean pod by running through the center between the bean rows. The center interval between the left and right disk rotary blades is slightly wider than the space between the bean rows because the bean stalk is trimmed at the inner periphery of the disk rotary blade in the forward direction. A parallelogram link is projected forward from a lateral girder projecting to the left and right of the front end frame so that the distance between the left and right and the front and rear can be adjusted, and the parallelogram link is suspended from above via a spring. In addition, a guide that the lower link is in contact with above and below the parallelogram link is provided, and the lowest descending position of the parallelogram link is determined by a projecting piece that contacts the lower edge of the long hole provided at the lower portion of the guide.
[0015]
A shaft cylinder is vertically installed on the front of the front link of the parallelogram link toward the ground surface, a hydraulic motor is attached to the top of the shaft cylinder, a rotary shaft is connected to the output shaft of the hydraulic motor, and the shaft is supported in the shaft cylinder. To do. The lower end of the rotating shaft slightly protrudes below the lower end surface of the shaft tube, and the central portion of the disk rotary blade is detachably attached to the protruding end. A weeding device is projected forward from the shaft cylinder in front of the disk rotary blade, and an arm is projected backward from the lower end of the front link of the parallelogram link behind the disk rotary blade. The cutting height adjusting wheel is provided at the rear end of the arm so as to be adjustable in height along the forward direction.
[0016]
Further, a straight beam is projected forward from the tip frame at the center of the left and right disk rotary blades, and the square pipe body is inserted in a square hole body vertically provided at the front end portion of the straight beam so as to be adjustable in height. Then, the square pipe body is fitted with a square shaft standing up and down on the upper end surface so as to be movable up and down, and the lift display bar is projected upward from the square pipe body. The upper and lower ends of the battery cylinder are respectively attached to the square pipe body and the square shaft portion projecting downward from the square pipe body, and the battery cylinder raises and lowers the square shaft within the square pipe body and pivots to the lower end of the square shaft. The front height adjustment wheel that is pivotally supported by a freely mounted wheel yoke is raised and lowered. An elevating gauge is erected on the upper part of the square pipe body in parallel with the elevating display bar, and the upper / lower position of the elevating display bar with respect to the elevating gauge is seen from the driver seat of the tractor to know the amount of elevation of the front height adjustment wheel. did.
[0017]
An oil tank is provided at the rear of the beam frame, oil is supplied from the oil tank to a hydraulic pump provided below the bottom plate of the oil tank, and the hydraulic pump is rotated through a universal joint shaft coupled to the PTO shaft of the tractor. The generated hydraulic pressure was circulated to the hydraulic motor, and the disk rotary blade was rotated. In order to make it easy to detach the connecting frame from the tractor, support legs are provided on both the left and right sides of the oil tank, and the upper ends of the support legs are pivotally attached to the brackets on both sides of the lower part of the oil tank. I was able to fix it.
[0018]
【Example】
Next, examples will be described with reference to the drawings. FIG. 1 is a plan view of the reamer mounted on a tractor according to the present invention, and FIG. 2 is a left side view of the same. In these drawings, 1 is a connecting frame, and a horizontal girder 2 whose one end protrudes rightward from the rear wheel of the tractor T is placed horizontally on the rear ends of the lower links 7 and 7 of the hydraulic three-point link hitch of the tractor. The upper end of the top link 3 is pinned to the upper end of the vertical plate 4 that is connected and erected on the cross beam 2. And the brace 5 is spanned between the front surface of the cross beam 2 and the intermediate part of the top link 3, and the vertical movement of the hydraulic three-point link hitch is fixed. Reference numeral 6 denotes a bracket for connecting the lower links 7 and 7 (see FIG. 8), and is provided to face the left half of the horizontal pipe 2 of the square pipe so as to be opposed to the left and right.
[0019]
Reference numeral 8 denotes an oil tank, which is placed on a base frame 10 protruding from the rear part of the cross beam 2. Reference numeral 9 denotes a hydraulic pump, which is fixed below the bottom plate of the hydraulic pump 8 and is rotated via a Chien transmission mechanism (not shown) connected to a universal joint shaft 117 (see FIG. 8) connected to the PTO of the tractor. ing. 11 is an oil feed hose connection port, 12 is a return oil hose connection port, and is provided on the upper surface of the oil tank 8. Reference numerals 13 and 14 are support legs provided on both the left and right sides of the oil tank 8 so as to be able to be inverted. When the bean cutter is removed from the tractor, it is turned downward to stand on the ground, and when the bean cutter is attached to the tractor, it is inverted. It is supposed to be fixed.
[0020]
Reference numeral 17 denotes a swivel frame. A vertical girder 20 is fixed to the right end of the swivel cross beam 18 at right angles, and the left end of the swivel cross girder 18 is fixed to the rear end of the right end of the cross beam 2 with a vertical pin. When pivoted at 16, the stringer 20 projects forward along the forward direction of the tractor. Reference numeral 25 denotes a brace obliquely provided rearward from the front end portion of the stringer 20. The terminal is fixed to a protruding piece 21 protruding from the front surface of the right end of the horizontal beam 2 with a vertical pin 23, and the vertical beam 20 protruding forward. The turn is fixed. Further, a projecting piece 19 is provided at the top and bottom at the tip of the swiveling girder 18, the swiveling cross girder 18 is swiveled backward 180 degrees around the vertical pin 16, and the space between the upper and lower projecting pieces 19 is fixed to the rear surface of the cross beam 2 When externally fitted to the projecting piece 22 and fixed by the vertical pin 24, the vertical beam 20 is fixed to the rearward protrusion along the forward direction (see FIG. 3).
[0021]
Then, a U-shaped bracket 27 is fixed to the front end portion of the vertical beam 20, and the rear end portion of the intermediate beam 29 is inserted into the U-shaped bracket 27 and is pivotally attached by a lateral pin 28. An arm plate 31 is erected on the middle portion of the intermediate beam 29 so as to be opposed to the left and right, and a hydraulic cylinder 30 is installed between the bracket 26 erected on the front end portion of the vertical beam 20 so as to be opposed to the left and right. The hydraulic cylinder 30 is supplied with hydraulic pressure through a hydraulic hose 32 connected to the hydraulic pump of the tractor. The hydraulic cylinder 30 is depressurized so that hydraulic pressure acts, the front end of the intermediate beam 29 rises around the lateral pin 28, and when the hydraulic pressure is released, the intermediate beam 29 descends by its own weight.
[0022]
Reference numeral 34 denotes a front end frame, the rear end of which is opposed to the front end of the intermediate beam 29 with a small gap, and is connected to the intermediate beam 29 by a left and right swing connecting body 33 which will be described later, and protrudes forward along the forward direction. ing. The front end frame 34 has a horizontal girder 35 protruding left and right at the front end portion thereof fixed horizontally. Reference numeral 36 denotes a cross beam, one end of which is fixed to the right side of the U-shaped frame metal 38 that is fitted around the middle portion of the front end frame 34, and is horizontally provided on the right side of the front end frame 34. The U-shaped frame metal 38 has a screw rod 40 fixed to the upper and lower surfaces thereof at right angles to the U-shaped frame metal 38, and the tip of the screw rod 40 protrudes toward the opening side of the U-shaped frame metal 38. Reference numeral 39 denotes a plate having upper and lower holes through which the screw rod 40 is inserted. The U-shaped frame metal 38 has an opening that is externally fitted to the tip frame 34, and the upper and lower holes of the plate 38 are fitted to the threaded rod 40, and a nut is screwed onto the threaded rod 40 and tightened. And fixed. The U-shaped frame metal in the following description has the same configuration as the U-shaped frame metal 38.
[0023]
Reference numeral 37 denotes a cross beam, which is provided in front of the cross beam 35 at the front end portion of the front end frame 34 so as to be orthogonal to the forward direction. At the middle part of the front end frame 34, the mounting position of the U-shaped frame metal 38 is moved back and forth so that the front-rear distance between the horizontal beam 36 and the horizontal beam 37 can be changed to the standard between the bean rows. Reference numeral 41 denotes a U-shaped frame metal that is externally fitted to the cross beam 36 and is slid right and left to be fixed. Reference numeral 42 denotes a U-shaped frame metal that is slid and fixed to the cross beam 37. Reference numeral 43 denotes a parallelogram link, which is attached to the front part of the U-shaped frame bars 41 and 42 and protrudes forward.
[0024]
Further, referring also to FIG. 6, a bracket 45 is projected forward from the upper part of the rear link 44 of the parallelogram link 43 (see FIG. 2), and the lower end of the eyebolt 46 attached through the front end of the bracket 45. The upper end of the coil spring 47 is attached to the part, the lower end of the coil spring 47 is coupled to the lower link of the parallelogram link 43, and the parallelogram link 43 is elastically suspended from the bracket 45.
[0025]
Reference numeral 48 denotes a guide plate, the upper end of which is bolted to the bracket 45, the side surface is in sliding contact with the side surfaces of the upper and lower links of the parallelogram link 43, and guides when the upper and lower links move up and down. Yes. The guide plate 48 is provided with a long hole 49 in the lower half, and a projecting piece 50 fixed to the lower link of the parallelogram link 43 is fitted in the long hole 49. When the projecting piece 50 comes into contact with the lower edge of the long hole 49 (see FIG. 4), the parallelogram link 43 is prevented from further descending. In other words, when the present invention towing machine is lifted at a farm terminal or the like as shown in FIG. 4, the lower limit of the parallelogram link 43 is determined.
[0026]
The block body 51 is attached to the front link 44a of the left and right parallelogram links 43, the central portion of the shaft cylinder 52 is attached to the front portion of the block body 51, and is tilted forward by about 5 degrees in the forward direction. In addition, the shaft cylinder 52 is provided toward the ground surface by tilting the left side of the shaft cylinder and tilting the right side of the shaft cylinder 52. The inclination angle to the left and right is about 5 degrees in front view. Inclining the shaft cylinder 52 forward and left and right is a known means for enabling the disk rotary blades 54 and 55 to cut the legumes satisfactorily. The shaft cylinder 52 uses a steel pipe and has a length of about 70 cm which is slightly longer than the plant height of soybean or the like.
The block body 51 is attached to the front link 44a so as to correspond to the forward tilt, the left tilt, and the right tilt.
[0027]
Reference numerals 53 and 53 denote hydraulic motors, which are respectively fixed on the upper surfaces of flanges fixed to the upper end surfaces of the left and right shaft cylinders 52, and output shafts (not shown) project into the shaft cylinder 52. A rotating shaft having an upper end connected to the output shaft is supported in the shaft cylinder 52, and a disk rotating blade 54 and a disk rotating blade 55 are respectively attached to the lower end portion of the rotating shaft slightly protruding from the lower end surface of the shaft cylinder 52. ing. The left hydraulic motor 53 rotates the disk rotary blade 54 counterclockwise, and the right hydraulic motor 53 rotates the disk rotary blade 55 clockwise. Due to the rotation of the disk rotary blades 54 and 55, the earth and sand rotating together with the disk rotary blades are scattered outwardly in the forward direction so as not to be applied to the bean crops that are cut down between the furrows. A left weeder attachment plate 57 and a right weeder attachment plate 58 are attached to the left and right shaft cylinders 52 via a weeder attachment body 56.
[0028]
The sliding plate 61 is fixed to the right weeding device mounting plate 58 by mounting rods 62 and 63, and the right weeding device 60 is projected in the forward direction in front of the center portion of the disk rotary blade 55. Reference numerals 64 and 65 are guide bars, and are obliquely provided rearward from the sliding plate 61 so as to tilt the harvested legumes to the left in the forward direction. Similarly, the left weeding device 59 is also provided on the left weeding device mounting plate 57 in front of the center portion of the disk rotary blade 54 along the forward direction, and the cut bean stem is guided to the right side in the forward direction. A bar is provided. That is, the two pods of stems cut by the left and right disc rotary blades 54 and 55 are brought down between the left and right weeds 59 and 60.
[0029]
Reference numeral 66 denotes a scraper, the lower edge of which faces the central part of the rear part of the disk rotary blades 54 and 55 through a small gap, and rearward from the rear surface of the lower end of the shaft cylinder 52 so as to clean the surface of the disk rotary blade. Installed. Reference numeral 67 denotes an arm, which projects horizontally from the lower part of the front link 44a of the parallelogram link 43 to the rear in the forward direction, and has a cutting height adjusting wheel 68 at the rear end thereof behind the disk rotary blades 54 and 55. Provided.
[0030]
The attachment structure of the cutting height adjusting wheel 68 will be described. In FIG. 6, reference numeral 98 denotes a square hole body, which is fixed vertically to the rear end portion of the arm 67. Reference numeral 99 denotes a square shaft, which is fitted in the square hole body 98 so as to be able to move up and down, and has an upper projecting piece 100 fixed horizontally on the upper end surface and projecting outward. Reference numeral 102 denotes an intermediate protrusion, which protrudes outward from the outer surface of the arm 67 below the upper protrusion 100. A bolt 101 penetrates the tip of the upper projecting piece 100 from above and is screwed with a nut. A lower end of the nut is screwed onto the intermediate projecting piece 102. The upper projecting piece 100 moves up and down with respect to the projecting piece 102, and the square shaft 99 moves up and down in the square hole body 98. Reference numeral 103 denotes a bearing plate, the upper end of which is fixed to the lower end of the square shaft 99, and the cutting height adjusting wheel 68 is pivotally supported 104 behind the central portion of the disk rotary blade 55. Reference numeral 105 denotes a soil drop around the cutting height adjusting wheel 68. That is, the cutting height adjusting wheel 68 is capable of adjusting the height of the disk rotary blade 55 with respect to the ground surface by raising and lowering the square shaft 99 by twisting the bolt 101 left and right.
[0031]
In FIG. 1, reference numeral 69 denotes a supply hydraulic hose, which is disposed between the oil supply hose connection port 11 of the oil tank 8 and the suction port of the right hydraulic motor 53. Reference numeral 70 denotes an intermediate hydraulic hose, which is connected from the discharge port of the right hydraulic motor 53 to the suction port of the left hydraulic motor 53 and supplies hydraulic oil from the right hydraulic motor 53 to the left hydraulic motor 53. is there. Reference numeral 71 denotes a return hydraulic hose, which is connected from the discharge port of the left hydraulic motor 53 to the return oil hose connection port 12 of the oil tank 8. That is, the pressure oil circulates in series from the hydraulic pump 9 to the right hydraulic motor 53, the left hydraulic motor 53, and the oil tank 8.
[0032]
Next, FIG. 7 is a fragmentary sectional view of the main part of the disk rotary blade mounting part. In the same figure, 106 is a rotating shaft, the lower end part is made into the large diameter part 107 through the step part, and also the lower end part is made into the flange. A ball bearing 108 is fitted inside the lower end portion of the shaft cylinder 52, and the shaft portion above the large diameter portion 107 is pivotally supported. Reference numeral 109 denotes a dustproof seal fitted into the shaft cylinder 52 below the ball bearing 98. A female screw portion for screwing a screw rod 111 (described later) from below to above is provided at the center of the large diameter portion 107. Reference numeral 110 denotes a washer, which has a screw rod 111 projecting upright on the upper surface of the central portion, and further forming circular projections in which the round holes in the central portions of the left and right disk rotary blades 54 and 55 just fit.
[0033]
A circular recess into which the circular protrusion is fitted is provided on the lower bottom surface of the large diameter portion 107. The left and right disk rotary blades 54 and 55 have a round hole in the center portion fitted on the circular protrusion of the washer 110, and a screw rod 111 is screwed onto the female screw portion of the large diameter portion 107 from below and tightened. It is attached to the lower end of 107. The screw directions of the threaded rod 111 and the female threaded portion of the large-diameter portion 107 are tightened by the rotation of the disk rotary blade. The disk rotary blades 54 and 55 have an outer diameter of 35 cm and a circular sawtooth shape.
[0034]
1 and 2, 72 is a straight beam, and a base end portion is fixed to a U-shaped frame metal that is externally fitted and fixed to the cross beam 35 so that the position of the cross beam can be adjusted in the horizontal direction, and protrudes forward along the forward direction. is doing. The straight girder 72 is made of a square pipe, and even a single girder 72 can be used. Referring also to FIG. 10, reference numeral 73 denotes a square hole body, and a central portion is fixed to the front end of the straight beam 72 so as to be orthogonal to the straight beam 72. Reference numeral 74 denotes a square pipe body, which is fixed to the square hole body 73 so that the vertical position can be adjusted by inserting and fixing screws 126 and 126. A square shaft 75 is slidably fitted into the square pipe body 74, and a lower end portion of the square shaft 75 is protruded downward from a lower end of the square pipe body 74.
[0035]
The square shaft 75 is fitted into the square pipe body 74 with a gap between the upper end surface and the upper end face of the square pipe body 74. Reference numeral 76 denotes an elevating display bar, which stands vertically on the upper end surface of the square shaft 75 and projects upward from the upper end surface of the square pipe body 74 to an appropriate length. Reference numeral 77 denotes an elevating gauge, which is fixed to the upper end portion of the square pipe body 74 in parallel with the elevating display bar 76. The elevating gauge 77 is used for easily knowing the ascending / descending state of the angular shaft 75 from the tractor driver's seat as compared with the upper end position of the elevating display bar 76 at the upper end of the angular shaft 75 moving up and down in the rectangular pipe body 74.
[0036]
Reference numeral 78 denotes a wheel yoke, which is attached to the lower end portion of the square shaft 75 so that the round shaft portion 127 at the lower end portion of the square shaft 75 passes through the upper surface and is prevented from coming off by the collar 128. . Reference numeral 79 denotes a front height adjustment wheel, which is pivotally supported at the lower end of the wheel yoke 78. Reference numeral 129 denotes an arm, which protrudes forward from both sides of the wheel yoke 78, and has a twin blade plate 80 attached to the front end. The double wing plate 80 separates left and right so that unharvested bean stalks falling between the ribs cannot be stepped on by the front height adjustment wheel 79. In FIG. 1, 81 is a chisel, 82 is a central weed rod, 83 is a lower grass rod provided along the lower edges of both sides of the double wing plate 80, and 130 is a soil drop.
[0037]
84 is a battery cylinder for raising and lowering the front height adjustment wheel 79. The upper part is attached to the upper part of the square pipe body 74 by a mounting plate 85, and the lower part of the cylinder is connected to the square shaft 75 projecting downward from the square pipe body 74. It is attached to the part with a mounting plate 86. The power source of the battery cylinder 84 is a battery for a tractor to which the bean cutter is mounted. Reference numeral 87 denotes a cord which is coupled to the battery of the tractor from the motor of the battery cylinder 84 via the switch lever 89. The switch lever 89 is attached to a base plate 88 fixed on the fender of the rear wheel of the tractor. When the switch lever 89 is tilted rearward, the cylinder of the battery cylinder 84 is raised. When the switch lever 89 is tilted forward, the cylinder is lowered. Is provided to stop.
[0038]
Reference numerals 94 and 95 denote intercostal weed tools that project along the forward direction inside the disk rotary blade 54 and the disk rotary blade 55, respectively. Referring to FIG. 6, the intercostal weeding tool 95 will be described. A square column 90 is erected on the inner surface of the block body 51 described above, and a holder 91 is attached to the corner column 90 so that the vertical position can be adjusted. . A horizontal girder 92 is projected horizontally from the left side of the holder 91 to the left, and a holder 93 is attached to the horizontal girder 92 so as to be movable and fixed. The holder 93 has a square hole in the front-rear direction, and a beam of the intercostal weeding tool 95 is attached to the square hole so as to be movable in the front-rear direction. A rod 97 is fixed substantially horizontally at the lower end of the intercostal weed tool 95 along the forward direction.
[0039]
In the intercostal weed tool 94, a square post is erected on the right side of the block body 51 attached to the front portion of the left parallelogram link 43 in the same manner as the intercostal weed implement 95, and is laterally extended to the right side from this square post. A girder is protruded horizontally, and is attached to a square hole of a holder 93 attached to the cross girder so as to be movable in the front-rear direction. The intercostal weeding tool 94 is raised at the lower end, and the rod 96 is fixed substantially horizontally along the forward direction. The intercostal weeding tools 94 and 95 are for raising the bean stalks that fell between the intercostals and guiding them to the disk rotary blades 54 and 55 so as to be cut. The end portions are seen above the disk rotary blades 54 and 55, respectively.
[0040]
Next, in FIG. 8, the oil tank 8 is provided with brackets 112 and 113 having a U-shaped cross section in front and rear on both the left and right sides. The upper end of the support leg 13 can be fitted into the right brackets 112 and 113, and the upper end of the support leg 14 can be fitted into the left bracket 113 and the bracket 112 (not shown) to move up and down outwardly as shown by alternate long and short dashed lines b and c. It is fixed to the turning center shaft 114. When the support legs 13 and 14 are pivoted downward and brought into contact with the ground, the stop pin 115 communicates with the lower ends of the brackets 112 and 113 and the upper ends of the support legs 13 and 14 so as to maintain the grounded state. Further, the retaining pin 115 is pulled out to pivot the support legs 13 and 14 upward about the pivoting center axis 114, and the retaining hole 116 is connected to the upper end portion of the supporting legs 13 and 14, and is indicated by a one-dot chain line. Thus, the support legs 13 and 14 can be held in the raised state.
[0041]
With reference to FIG. 9, the configuration of the left-right swing coupling body 33 will be described. A stepped shaft 118 having a small diameter portion is fixed above the front end of the intermediate beam 29 in parallel with the intermediate beam 29, and A stepped portion of a stepped shaft 118 is brought into contact with a rear end surface of the bearing 119 fixed in parallel with the front end frame 34 above the end portion, and the small diameter portion is pivotally supported by the bearing 119 and slightly protrudes forward from the bearing 119. A collar 120 is fixed to the front end surface of the stepped shaft 118 with a set screw 121 to prevent the stepped shaft 118 from coming off from the bearing 119. That is, the bearing 119 rotates around the stepped shaft 118 and the tip frame 34 swings to the left and right.
[0042]
Further, fin plates 122 and 123 are fixed horizontally from both sides of the intermediate portion of the bearing 119, bolts 124 are screwed to the rear end portions of the fin plates 122 and 123, and fixed across the upper surface of the front end portion of the intermediate beam 29. The lower end surface of the bolt 124 is opposed to the seat plate 125 through a small gap. The left / right swing amount of the front end frame 34 can be adjusted by adjusting the gap between the lower end surface of the bolt 124 and the seat plate 125.
[0043]
FIG. 3 is a plan view of the reaper of the present invention turned to the rear of the tractor. The vertical pin 23 is removed from the projecting piece 21 to release the brace 25 and the rotary frame 17 is connected to the vertical pin 15 of the U-shaped bracket 15. It swirls around 16 around the aa arrow, the protruding piece 19 at the tip of the turning cross beam 18 is fixed to the protruding piece 22 with the vertical pin 24, and the vertical beam 20 is fixed to the rear in a state along the forward direction. State. When the vertical beam 20 is in the above-described state, the intermediate beam 29 connected to the vertical beam 20 and the front end frame 34 connected to the intermediate beam 29 are also turned backward. When the tip frame 34 turns backward, the disk rotary blades 54 and 55 and the left weeding device 59, the right weeding device 60, the front height adjusting wheel 79 and the intercostal weeding tool 94, which are disposed on the turning frame 34, 95 etc. will be in the state turned to back. That is, the part which protrudes a bean cutter to the right side of a tractor is reduced, and it will be in the state which does not have trouble in driving | running | working on a narrow road.
[0044]
FIG. 4 is a left side view of the present invention towing machine when the tractor driver supplies hydraulic pressure from the tractor to the hydraulic cylinder 30, raises the front end of the intermediate beam 29, and raises the front end frame 34. is there. The parallelogram link 43 ascends as the tip frame 34 rises, and the disk rotary blades 54 and 55, the left and right weeding devices 59 and 60, the intercostal weeding tools 94 and 95, and the front height adjustment wheel 79 rise. When the parallelogram link 43 is raised, the upper, lower, and front links 44a pivot downward with respect to the rear link 44, but the protruding piece 50 provided on the upper link hits the lower edge of the long hole 49 of the guide plate 48. The descent of the parallelogram link 43 stops.
[0045]
FIG. 5 is a left side view of FIG. 3 in which the bean cutter is swung to the rear of the tractor, the swivel frame 17 is fixed to the cross beam 2, and the tip frame 34 is raised with respect to the vertical beam 20 by the hydraulic cylinder 30. is there. In this state, as shown in FIG. 3, there is almost no portion projecting outward from the tractor, so there is no problem in moving on a narrow road.
[0046]
【The invention's effect】
Since the present invention has the configuration described above, the following effects can be obtained.
[0047]
A connecting frame can be attached to the tractor's hydraulic three-point link hitch so that it can be moved up and down in a fixed manner. Combined, an intermediate girder that hydraulically moves up and down in front of the vertical girder of the swivel frame and a tip frame are sequentially arranged. A disc rotating blade, a weeding device, a front front height adjustment wheel and an intercostal weeding tool on the tip frame Since the reaping device such as the above is provided, the reaping device can be easily moved up and down by hydraulic pressure. In addition, with a simple operation of inserting and removing the vertical pin, the swivel frame can be swiveled backwards to make the bean mower less projecting outward from the tractor, so the bean mower mounted on the side of the tractor However, when traveling, it is possible to make it difficult to travel on the road.
[0048]
The front frame is connected to the front end of the intermediate girder via a left / right swing coupling body so that it can swing left and right. Can do. Further, since the cutting height adjusting wheel is provided at the rear of the disk rotating blade so that the height can be adjusted, the disk rotating blade can be set to a suitable leg cutting position with respect to the ground surface.
[0049]
The front height adjustment wheel that is raised and lowered by the battery cylinder while traveling between the furrows in the center of the front end of the bean mower is provided so that the height can be adjusted from the pilot seat of the tractor, so that the bean mower can be easily raised and lowered on the ground surface It can be cut accurately. In addition, since a lift indicator bar is provided at the upper end of the square shaft for attaching the front height adjustment wheel to the lower end, and a lift gauge is provided in parallel with the lift indicator bar at the upper end portion of the square pipe body into which the angular shaft is fitted. By looking at the height of the lift display bar relative to the lift gauge from the driver seat of the tractor, it is possible to easily know the lift state of the front height adjustment wheel.
[0050]
The oil tank provided at the rear of the connecting frame to be mounted on the tractor is provided with support legs that can be fixed upside down on both the left and right sides, so when removing the bean cutter from the tractor, it is easy to stand on the ground. Can be removed from the tractor. Further, when the connecting frame is mounted on the tractor, the support legs can be inverted and fixed on both sides of the oil tank, so that the support legs can be made without any trouble in the cutting operation.
[Brief description of the drawings]
FIG. 1 is a plan view of a bean reaper mounted on a tractor according to the present invention.
FIG. 2 is a left side view of the same.
FIG. 3 is a plan view of the reaper of the present invention turned to the rear of the tractor.
FIG. 4 is a left side view of the present invention towing machine when ascending.
FIG. 5 is a left side view in which the present invention towing machine is turned to the rear of the tractor and raised.
FIG. 6 is a perspective view of a main part in the vicinity of a cutting part.
FIG. 7 is a fragmentary cross-sectional view of a main part of a disk rotary blade mounting part.
FIG. 8 is a rear perspective view of the main part.
FIG. 9 is an exploded perspective view in which a main part of the left-right swing coupling body is broken.
FIG. 10 is a front view of a part in which a main part is broken.
[Explanation of symbols]
1 connection frame
2 horizontal girder
8 Oil tank
13 Support legs
14 Support legs
17 Rotating frame
18 Turning horizontal girder
20 column
29 Intermediate digits
30 Hydraulic cylinder
33 Left-right swing coupling
34 Tip frame
43 Parallelogram links
52 Shaft cylinder
53 Hydraulic motor
54, 55 Disc rotating blade
59, 60
68 Cutting height adjustment wheel
72 digits
76 Lifting display bar
77 Lifting gauge
79 Front height adjustment wheel
84 Battery cylinder
94, 95 Sakuma Weeding Tool
114 Turning center axis
115 Stop pin
118 Stepped shaft
119 Bearing
120 colors
121 Set screw
122, 123 Fin plate
124 volts
125 seat plate

Claims (5)

トラクタの後部に着脱自在に装着し一端部をトラクタの外方に突出する連結枠と、トラクタの外側方に前進方向に沿い前方に突設する縦桁を備え、前記連結枠の突出端部に前、後方に旋回・固定自在に枢着する旋回フレームと、前記縦桁の前端部にその後端部を横軸回りに枢着し、この枢着回りに油圧を介し上下動自在に前方に突設する中間桁と、前記中間桁の前端部に左右揺動連結体を介し結合する先端フレームと、この先端フレームから左右および前後間隔を調節可能に地表に向け弾性的に上下動自在にし、前、後位置にそれぞれ設ける円盤回転刃と、これら円盤回転刃の前方に設ける分草器と、前記円盤回転刃の後方に設ける刈高調節輪と、前記回転円盤刃の左右間隔の中央部に前記先端フレームから前方に突設する直桁の前端部に昇降自在に設ける前部高低調節輪と、前記連結枠の後部に設ける油タンクと、この油タンクに付設する油圧ポンプとを備え、前記左右の円盤回転刃を油圧回転するものにした豆刈機。A connecting frame that is detachably attached to the rear part of the tractor and has one end projecting outward from the tractor, and a vertical girder projecting forward along the forward direction outward of the tractor, and at the projecting end of the connecting frame A revolving frame that pivots forward and backward to be freely fixed, and a rear end portion pivots around the horizontal axis at the front end portion of the stringer. An intermediate girder to be installed, a front end frame that is coupled to the front end of the intermediate girder via a left-right swing coupling body, and a left-right and front-rear distance can be adjusted from the front end frame to be elastically movable up and down toward the ground surface. A disc rotary blade provided at each of the rear positions, a weeder provided in front of these disc rotary blades, a cutting height adjusting wheel provided at the rear of the disc rotary blade, and a central portion of a left-right interval between the rotary disc blades. Ascend to the front end of the straight girder that protrudes forward from the tip frame A front height adjustment ring provided freely, and an oil tank provided on a rear portion of the connecting frame, and a hydraulic pump attached to the oil tank, Mamekari machine in which the rotating disc blade of the right and left to those that hydraulic rotary. 前記中間桁を、前記縦桁の前端部と中間桁に立設する腕板との間に架設する油圧シリンダにより、枢着回りに上下動するものにした請求項1記載の豆刈機。The bean cutter according to claim 1, wherein the intermediate beam is moved up and down around a pivot by a hydraulic cylinder installed between a front end of the vertical beam and an arm plate standing on the intermediate beam. 前記左右揺動連結体を、前記中間桁上に中間桁と平行に段付軸を固着し、前記段付軸の小径部を抜け止めを施して軸支する軸受を前記先端フレームの基端部に固設するとともに、左右に制限的に回動できるものにした請求項1記載の豆刈機。A base end portion of the front end frame is provided with a bearing that supports the left-right swinging coupling body on the intermediate girder by fixing a stepped shaft in parallel with the intermediate girder and preventing the small-diameter portion of the stepped shaft from coming off. The bean cutter according to claim 1, wherein the bean cutter is fixed to the left and right and can be limitedly rotated to the left and right. 前記前部高低調節輪が、前記先端フレームから前方に突設する直桁の前端部に高低調節可能に角パイプ体を縦設し、上端面に昇降表示棒を立設する角軸を前記角パイプ体に昇降自在に内嵌するとともに、昇降表示棒を角パイプ体から上方に突出させ、角パイプ体上部に昇降表示棒と平行に昇降ゲージを立設し、バッテリーシリンダの上端部および下端部をそれぞれ前記角パイプ体および角パイプ体の下端から下方に突出する角軸部分に取付け、角軸下端部の縦軸回りに旋回自在に設けた車輪ヨークに軸支したものである請求項1記載の豆刈機。In the front height adjustment wheel, a square pipe body is vertically installed at a front end portion of a straight beam projecting forward from the tip frame so as to be adjustable in height, and an angular axis for erecting an elevating display bar on the upper end surface is set to the angle. It is fitted in the pipe body so as to be able to move up and down, and the lift display bar protrudes upward from the square pipe body, and a lift gauge is erected on the upper part of the square pipe body in parallel with the lift display bar. 2. A rectangular pipe body and an angular shaft portion projecting downward from a lower end of the rectangular pipe body, respectively, and supported by a wheel yoke provided so as to be pivotable about a vertical axis at a lower end portion of the angular shaft. Bean cutter. 前記連結枠の後部に設ける油タンクが、左右両側に倒立し固定できる支持脚を設けている請求項1記載の豆刈機。The bean cutter according to claim 1, wherein an oil tank provided at a rear portion of the connection frame is provided with support legs that can be inverted and fixed on both left and right sides.
JP10575198A 1998-03-31 1998-03-31 Bean cutter Expired - Fee Related JP3907311B2 (en)

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Application Number Priority Date Filing Date Title
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JPH11275928A JPH11275928A (en) 1999-10-12
JP3907311B2 true JP3907311B2 (en) 2007-04-18

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Publication number Priority date Publication date Assignee Title
JP6262695B2 (en) * 2015-08-31 2018-01-17 株式会社ミツワ Green soybean harvesting machine
CN121264281B (en) * 2025-12-05 2026-03-10 重庆市万州区农业技术与机械推广中心 Multi-terrain horizontal cutting table for corn harvester

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