JP3643531B2 - Agricultural machine and rotary maintenance method - Google Patents

Agricultural machine and rotary maintenance method Download PDF

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JP3643531B2
JP3643531B2 JP2000387775A JP2000387775A JP3643531B2 JP 3643531 B2 JP3643531 B2 JP 3643531B2 JP 2000387775 A JP2000387775 A JP 2000387775A JP 2000387775 A JP2000387775 A JP 2000387775A JP 3643531 B2 JP3643531 B2 JP 3643531B2
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leveling
engagement
rotary
pin
work
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JP2002186304A (en
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勉 谷澤
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松山株式会社
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【0001】
【発明の属する技術分野】
本発明は、ロータリにて耕耘砕土された土を平らにする整地体を備えた農作業機およびロータリのメンテナンス作業方法に関する。
【0002】
【従来の技術】
従来の農作業機は、例えば、回転して耕耘砕土するロータリと、このロータリの後方に回動可能に位置する整地体とを備えている。そして、整地体は、操作レバー体等からなる設定手段により、ロータリにて耕耘砕土された土を平らにする整地作業を行う整地作業状態に設定されたり、土を引き寄せる土引き作業を行う土引き作業状態に設定されたりする。
【0003】
【発明が解決しようとする課題】
しかしながら、上記従来の農作業機の構成では、例えば、ロータリの洗浄、或いは、ロータリの爪の交換等に手間がかかり、ロータリのメンテナンス作業を効率良く行えないおそれがある。
【0004】
本発明は、このような点に鑑みなされたもので、ロータリのメンテナンス作業を効率良く行うことができる農作業機およびロータリのメンテナンス作業方法を提供することを目的とする。
【0005】
【課題を解決するための手段】
求項記載の農作業機は、耕耘砕土するロータリと、このロータリにて耕耘砕土された土を平らにする整地体と、この整地体を、前記ロータリにて耕耘砕土された土を平らにする整地作業を行う整地作業状態、土を引き寄せる土引き作業を行う土引き作業状態、および、前記ロータリが後方に向って露出するメンテナンス作業状態の各々の状態に選択的に設定可能な設定手段とを具備し、前記設定手段は、操作レバー体と、この操作レバー体の操作に応じて回動する回動係合体と、この回動係合体に対して係脱可能な作用係合体とを備え、前記回動係合体は、前記整地体の整地作業状態時に前記作用係合体の移動を許容する移動許容部と、前記整地体の土引き作業状態時に前記作用係合体と係合する第1係合部と、前記整地体のメンテナンス作業状態時に前記作用係合体と係合する第2係合部とを有しているものである。
【0006】
そして、この構成では、設定手段にて整地体を整地作業状態および土引き作業状態に加えてメンテナンス作業状態に設定でき、ロータリを後方に向けて露出させることができるので、従来の構成に比べて、ロータリのメンテナンス作業を効率良く行うことが可能となり、また、簡単な構成であるにもかかわらず、操作レバー体の操作で作用係合体を回動係合体に対して係脱させることにより、整地体を整地作業状態、土引き作業状態、メンテナンス作業状態に適切に設定可能である。
【0007】
請求項記載の農作業機は、請求項記載の農作業機において、操作レバー体と回動係合体とが一体に形成されているものである。
【0008】
そして、この構成では、操作レバー体と回動係合体とを一体に形成したので、操作レバー体と回動係合体との間に別体の連結部材等を設けた構成に比べて、部品点数が少なくなる。
【0009】
請求項記載のロータリのメンテナンス作業方法は、ロータリが後方に向って露出する位置まで整地体を上方に回動させることにより、この整地体と連動する回動アームの係合ピンを回動係合体のピン当接部に当接させる工程と、前記係合ピンと前記ピン当接部とが当接した後に操作レバー体を回動操作することにより、この操作レバー体と連動する前記回動係合体の係合凹部に前記係合ピンを係合させる工程とを具備しているもので、簡単にロータリを後方に向けて露出させることができ、作業効率良くロータリのメンテナンス作業が可能である。
【0010】
【発明の実施の形態】
以下、本発明の農作業機の一実施の形態の構成を図面を参照して説明する。
【0011】
図1において、1は農作業機で、この農作業機1は、走行車である牽引車としてのトラクタTに着脱可能に装着して使用する牽引式の代掻装置等で、トラクタTの牽引動作により水田圃場上を移動しながら、水田圃場を耕耘砕土して水田圃場の表面部を水平面状に平らに整地するものである。
【0012】
そして、農作業機1は、図1および図2に示すように、機枠2を備えており、機枠2の前側上部には、トップピン3を有する1本のトップマスト4、ロワピン5を有する左右一対で2本のロワアーム6,6等にて構成された連結部であるトラクタ連結部としての三点連結部7が設けられている。三点連結部7は、トラクタTの後部に設けられた油圧式の作業機昇降用の支持装置としての三点リンク機構(三点ヒッチ部)T1に着脱可能に連結されている。なお、三点リンク機構T1は、1本のトップリンクa、左右一対で2本のロワリンクb,b等にて構成されている(図7等参照)。
【0013】
また、機枠2は、図1および図2に示すように、左右方向に長手方向を有する細長形状の主フレーム11を有し、主フレーム11の長手方向中央部にはミッションケース等からなる入力軸保持部12が取り付けられ、入力軸保持部12にて前後方向の入力軸13が回転可能に保持されている。入力軸13は、トラクタTの図示しないPTO軸にユニバーサルジョイント等を介して連結され、トラクタTからの駆動力を農作業機1側に入力する。
【0014】
また、主フレーム11の長手方向両端部には、上下方向に長手方向を有する側面視細長略矩形状をなす互いに離間対向した左右一対のチェーンケースやブラケット等からなる側板フレーム15,15の上端部が取り付けられている。
【0015】
両側板フレーム15の下部間には、水田圃場を耕耘砕土する耕耘砕土体としてのロータリ16が回転可能に設けられている。ロータリ16は、両側板フレーム15下端部間に水平状に軸架された左右方向の回転軸17を有し、回転軸17の爪取付け部(図示せず)には複数の爪18が軸方向に互いに間隔を介して並設状に取り付けられ、各爪18が回転軸17から放射状に突出している。なお、農作業機1のメンテナンス作業の際にはロータリ16の回転軸17が後方に露出した状態となるため、例えば回転軸17の爪取付け部が後方に露出され、爪18の交換作業等を容易にできることとなる。
【0016】
また、各側板フレーム15の下部後端部からは、板状の突出部としてのサイドカバー体21が後方に向って突出しており、サイドカバー体21,21は、ロータリ16の両側方位置に配置され、側板フレーム15とともにロータリ16から放出される土の側方への飛散を防止する。
【0017】
また一方、ロータリ16の上方位置には、左右方向に長手方向を有する細長略矩形板状で幅方向中央側が上方に膨出したやや湾曲状のカバー体としての上部カバー体22が配置されており、上部カバー体22は、ロータリ16から放出される土の上方への飛散を防止する。
【0018】
上部カバー体22の後端部には、左右方向に長手方向を有する細長略矩形板状の弾性変形可能な連結体としてのゴム板等の弾性連結体26の前端部が取り付けられている。弾性連結体26の後端部には、左右方向に長手方向を有する細長略矩形板状の均平板等の第1の整地体27の前端部が取り付けられている。第1の整地体27の後端部には、左右方向に長手方向を有する細長略矩形板状のレーキ板等の第2の整地体28の前端部が左右方向のピン等の軸部29を介して回転可能に取り付けられている。
【0019】
そして、弾性連結体26、第1の整地体27、第2の整地体28等にて整地手段である整地体30が構成されており、この整地体30は、ロータリ16にて耕耘砕土された土を平らにするもので、弾性連結体26の変形に基づいて前端側を中心として上下方向に回動可能な構成すなわち前端側を中心として後端側が昇降するように回動可能な構成とされている。また、整地体30は弾性連結体26の変形に基づいて左右方向に回動可能な構成とされている。
【0020】
一方、図1および図2において、31は整地体30の状態を切換え設定するための切換操作機構としての操作設定手段である設定手段で、この設定手段31は、例えば、整地体30を、ロータリ16にて耕耘砕土された土を平らにする整地作業を行う整地作業状態(図1に示す回動可能なフリー状態)、畦際等で高く盛り上がった土を引き寄せる土引き作業を行う土引き作業状態(図3に示す略鉛直状の土引きロック状態)、および、ロータリ16の略全体が後方に向って露出(開放)した状態となるメンテナンス作業状態(図6に示す略水平状のメンテナンスロック状態)の各々の状態に、選択的に設定可能な構成とされている。
【0021】
まず、設定手段31は、機枠の入力軸保持部に固着された左右一対の取付けフレーム32,32を備えている。これら両取付けフレーム32間には、付勢体としてのねじりばね34を保持した軸状のばね保持部材36が橋架されているとともに、軸状の係止手段であるストッパ37が橋架され、かつ、プレート用の支持軸38が橋架されている。
【0022】
そして、取付けフレーム32の後端上部には、所定範囲内で上下方向に回動可能な板状のカム体である回動係合体としての回動係合プレート41の前端部が支持軸38を介して回動可能に取り付けられており、この回動係合プレート41は左右方向の支持軸38を中心として上下方向に回動可能すなわち前端側を中心として後端側が昇降するように回動可能な構成とされている。
【0023】
ここで、回動係合プレート41は、図4に示されるように、一端部である前端部に形成されたレバー取付け段部42を有している。そして、レバー取付け段部42には棒状の操作レバー体43の下端部が固着され、操作レバー体43と回動係合プレート41とが一体の構成とされ、操作レバー体43は支持軸38を中心として回動操作可能となっている。また、回動係合プレート41の前端部下部には突出状のばね取付け部45が形成され、ばね取付け部45の連結孔部46にねじりばね34の一端側が挿通連結され、ねじりばね34の他端側は左側の取付けフレーム32の連結孔部32aに挿通連結されている(図2)。
【0024】
また、回動係合プレート41は、下端部に切欠き形成された移動許容部48を有し、この移動許容部48は、整地体30の整地作業状態時に作用係合体としてのロックピンである係合ピン50の移動(図1のイ方向の移動)を許容するための細長状の空間部で、段部としての第1ピン当接部51とピン当接部としての第2ピン当接部52との間に位置している。また、回動係合体41の前側下端面には、ピン当接部である第2ピン当接部52の近傍位置に第1ストッパ当接部53が形成されているとともに、ばね取付け部45の近傍位置に第2ストッパ当接部54が形成されている。第1ストッパ当接部53および第2ストッパ当接部54の各々は、ねじりばね34にて付勢された状態でストッパ37の円筒面状の外周面の所定部位に当接し、これら第1ストッパ当接部53および第2ストッパ当接部54にて回動係合プレート41の回動範囲が設定されている。
【0025】
さらに、回動係合プレート41は、後側下部に切欠き形成されて整地体30の土引き作業状態時に係合ピン50と係合する細長状の第1係合部としての第1係合凹部56を有している。この長孔状の第1係合凹部56の開放した下端側は移動許容部48の一端側に連通しており、第1係合凹部56の上端側が回動係合プレート41の上端縁近傍まで延びており、この上端部にてピン保持部56aが形成されている。第1係合凹部56の幅寸法は係合ピン50の外径より若干大きい寸法とされ、第1係合凹部56内を係合ピン50が第1係合凹部56の長手方向に沿ってスライド移動する。なお、第1係合凹部56の下方位置に第1ピン当接部51が位置し、この第1ピン当接部51は円弧状の後端縁部55の下端部から前方に向って突出状となっている。
【0026】
また、回動係合プレート41は、前側下部に切欠き形成されて整地体30のメンテナンス作業状態時(ロータリのメンテナンス作業を行うための状態時)に係合ピン50と係合する係合凹部である第2係合部としての第2係合凹部57を有している。第2係合凹部57の開放した下端側は移動許容部48の他端側に連通している。第2係合凹部57は抜け止め用の凸部58の存在で先太状とされ、先側である上側は係合ピン50の外径より若干大きい寸法の略円形状をなしている。なお、回動係合プレート41の前側に支持軸38が挿通された軸挿通孔部59が開口形成されている。また、移動許容部48、第1係合凹部56および第2係合凹部57は互いに連続している。
【0027】
また一方、設定手段31は、図1および図2に示すように、係合ピン50を有した略前後方向に細長形状の回動アーム61を備えており、この回動アーム61の前端部が、取付けフレーム32の後端下部に、アーム用の支持軸62を介して回動可能に取り付けられている。回動アーム61は、左右方向の支持軸62を中心として上下方向に回動可能すなわち前端側を中心として後端側が昇降するように回動可能な構成とされている。なお、回動アーム61の前側上部に、軸方向が左右方向に一致した断面円形状の係合ピン50が固着されている。
【0028】
また、回動アーム61の後端部には、略上下方向に長手方向を有する吊持竿等の連結ロッド63の上端部が、左右方向のピン等の軸部64を介して回転可能に取り付けられている。連結ロッド63の下端部は、第2の整地体28の連結板部28aに、左右方向のピン等の軸部65を介して回転可能に連結されている。
【0029】
次に、上記一実施の形態の動作等について説明する。
【0030】
まず、農作業機1を用いて整地作業(代掻作業)を行う場合について説明する。
【0031】
整地作業を行う場合、作業者は、設定手段31にて整地体30を図1に示す整地作業状態、すなわち、圃場側から受ける力に基づいて回動可能なフリー状態に設定する。
【0032】
この図1に示す状態では、回動アーム61の係合ピン50は、移動許容部48内に位置し、図1のイ方向に移動可能なフリーな状態にあり、回動アーム61がアーム用の支持軸62を中心に回動可能な状態にある。また、回動係合プレート41は、ねじりばね34にて上方に回動しようとする方向に付勢され、第2ストッパ当接部54がストッパ37の前側の所定部位に当たって圧接した状態にある。
【0033】
そして、図7に示すように、トラクタTの三点リンク機構T1で農作業機1を所定位置まで下降させた状態で、トラクタTの牽引動作により農作業機1を前進方向に移動させる。
【0034】
すると、トラクタTからの駆動力で駆動回転するロータリ16にて耕耘砕土され、このロータリ16から放出されて盛り上がった細砕土が整地体30の第1の整地体27および第2の整地体28にて均平、鎮圧される。こうして、水田圃場の表面部が水平面状に平らになる。
【0035】
この作業時において、均平板である第2の整地体28の上下動に対応して、係合ピン50が回動アーム61および連結ロッド63を介して移動許容部48内で移動するが、この係合ピン50の移動は第1ピン当接部51と第2ピン当接部52とで規制されるため、第2の整地体28が必要以上に上下動することなく所定範囲内で上下動する。
【0036】
次いで、農作業機1を用いて土引き作業を行う場合について説明する。
【0037】
上述の代掻作業の前に、畦際等で高く盛り上がった土を低い方へ移動させる場合、作業者は、設定手段31にて整地体30を図3に示す土引き作業状態、すなわち、やや傾斜した略鉛直状の土引きロック状態に設定する。
【0038】
例えば、整地体30を図1に示す整地作業状態から図3に示す土引き作業状態に切り換える場合、トラクタTに乗った作業者は、三点リンク機構T1で農作業機1を持上げて整地体30を圃場面等から浮き上がらせた状態を維持したまま、操作レバー体43を、この操作レバー体43と一体の回動係合プレート41の第1ストッパ当接部53がストッパ37の後側の所定部位に当接するまで、所定方向(図示A方向)に回動操作する(操作レバー体43を押す)。
【0039】
すると、第1ピン当接部51に当接していた係合ピン50が、第1係合凹部56内に入り込み、この第1係合凹部56に沿って移動して上端部のピン保持部56aにて係合保持される。
【0040】
この係合ピン50の移動に応じて、連結ロッド63にて第2の整地体28が下方に押されて、この第2の整地体28が軸部29を中心として下方に回動し、その結果、第1の整地体27および第2の整地体28が、略同一面上に位置した状態となりかつ回動不能な土引きロック状態となる(図3の状態)。
【0041】
そして、図8に示すように、トラクタTの三点リンク機構T1で農作業機1を所定位置まで下降させた状態で、トラクタTの牽引動作により農作業機1を前進方向に移動させる。すると、整地体30の第2の整地体28にて、盛り上がった土Aが低い方へ引き寄せられる。
【0042】
土引き作業終了後、例えば、整地体30を図3に示す土引き作業状態から図1に示す整地作業状態に切り換える場合、トラクタTに乗った作業者は、まず、図4に示すように、三点リンク機構T1で農作業機1を持上げて整地体30を圃場面等から浮き上がらせた状態を維持したまま、操作レバー体43を、係合ピン50が回動係合プレート41の第1ピン当接部51に当接するまで、所定方向(図示B方向)に回動操作する(操作レバー体43を引く)。
【0043】
この操作途中で、ねじりばね34の付勢方向が変化する。すなわち、回動係合プレート41は、操作前半ではねじりばね34にて下方に回動しようとする方向(図4中の白抜き矢印方向である時計回り方向)に付勢され、操作後半ではねじりばね34にて上方に回動しようとする方向(図5中の白抜き矢印方向である反時計回り方向)に付勢される。
【0044】
操作レバー体43の引き操作後、作業者は、三点リンク機構T1で農作業機1を下降させて、整地体30の下端側を例えば圃場面に接地させる。すると、図5に示されるように、第1係合凹部56内で第1ピン当接部51の上面51aに当接していた係合ピン50が、移動許容部48内に移動し、第1ピン当接部51の前面51bに当接した状態となる(図5の二点鎖線の状態)。すなわち、整地体30の接地に基づいて係合ピン50が第1ピン当接部51の上面51aから離反するとともに、回動係合プレート41がねじりばね34の付勢力で図示B方向に回動し、その結果、第1ピン当接部51の上面51aに当接していた係合ピン50が、移動許容部48内に移動し、第1ピン当接部51の前面51bに当接した状態となる(図5の二点鎖線の状態)。
【0045】
こうして、第1係合凹部56と係合ピン50との係合が解除され、整地体30のロック状態が解除されて、整地体30が代掻作業、運搬移動等に適した回動可能なフリー状態となる。
【0046】
次いで、農作業機1のメンテナンス作業を行う場合について説明する。
【0047】
例えば、ロータリ16の爪18、上部カバー体22の内面側、サイドカバー体21の内面側等の洗浄、ロータリ16の爪18の交換等を行う場合、作業者は、設定手段31にて整地体30を図6に示すメンテナンス作業状態、すなわち、略水平状のメンテナンスロック状態に設定する。
【0048】
例えば、整地体30を整地作業状態から図6に示すロータリ16のメンテナンスのためのメンテナンス作業状態に切り換える場合、作業者は、三点リンク機構T1で農作業機1を持上げて整地体30を圃場面或いは倉庫の床面等から浮き上がらせた状態(図1の状態)とした後、トラクタTから降りる。
【0049】
そして、作業者は、農作業機1の後方に回り込んでから、一方の手で整地体30を上方に回動させて、回動アーム61の係合ピン50を回動係合プレート41の第2ピン当接部52に当接させる。
【0050】
係合ピン50と第2ピン当接部52とを当接させた後、作業者は、他方の手で操作レバー体43をいずれかの所定方向(図示A方向)に回動操作して、係合ピン50を第2係合凹部57内に進入させ、第2係合凹部57にて係合ピン50を係合保持させる。こうして、第1の整地体27および第2の整地体28が、略同一面上に位置した状態となりかつ回動不能なメンテナンスロック状態となる(図6の状態)。
【0051】
この図6に示す状態、或いは、三点リンク機構T1で農作業機1をより高い位置に持上げた図9に示す状態では、第2の整地体28がロータリ16の回転軸17より高い位置或いはロータリ16全体より高い位置等に、位置決め固定され、ロータリ16が後方に向って開放した露出状態に保持される。このため、作業者は、ロータリ16等に関するメンテナンス作業を容易に行うことができる。
【0052】
メンテナンス作業後、例えば、整地体30を図6に示すメンテナンス作業状態から図1に示す整地作業状態に切り換える場合、トラクタTに乗った作業者は、三点リンク機構T1で農作業機1を持上げて整地体30を圃場面等から浮き上がらせた状態を維持したまま、操作レバー体43を所定方向(図示B方向)に回動操作して、第2係合凹部57と係合ピン50との係合を解除する。
【0053】
すると、図1に示されるように、整地体30がその自重で下方に回動し、係合ピン50が移動許容部48内を後方に移動して第1ピン当接部51の前面51bに当接した状態となる。こうして、整地体30のロック状態が解除されて、整地体30が代掻作業、運搬移動等に適した回動可能なフリー状態となる。
【0054】
このように、上記実施の形態によれば、トラクタTに乗ったまま操作できる1本の操作レバー体43を有する設定手段31にて、整地体30を整地作業状態(代掻作業状態)および土引き作業状態(土寄せ作業状態)の2つの状態に加え、さらにメンテナンス作業状態に設定できるため、簡単にロータリ16を後方露出状態にでき、ロータリ16のメンテナンス作業を効率良く行うことができる。
【0055】
すなわち、土引固定、土引固定解除(代掻作業時・運搬移動時)の設定手段31である切換操作機構にさらにメンテナンス位置での固定ができるようにした構成であるから、この切換操作機構を利用して整地体30をメンテナンス作業状態に設定固定することで、図9に示すように、整地体30全体をロータリ16の上端位置より高い位置に位置決め固定でき、また、整地体30を略水平状すなわち例えばやや傾斜した前低後高状の姿勢に保持できるため、ロータリ16の爪18の洗浄、ロータリ16の爪18の交換等を行う際に整地体30が邪魔にならず、効率良くメンテナンス作業ができる。
【0056】
また、一つの切換操作機構である設定手段31で整地作業状態、土引き作業状態およびメンテナンス作業状態の3つの状態に設定できる構成としたので、例えばメンテナンス作業状態設定用の手段を別に設けた構成に比べて、構成を簡単にでき、組立て作業を容易にでき、製造コストを低減でき、しかも、見栄えが良好である。
【0057】
また一方、操作レバー体43と回動係合プレート41とを一体に形成して一つの部材としたので、操作レバー体43と回動係合プレート41との間に別体の連結部材等を設けた構成に比べて、部品点数が少なく、組立て作業を容易にでき、製造コストを低減できる。
【0058】
なお、上記実施の形態においては、代掻装置等の農作業機1は、トラクタTに装着して使用する牽引式の構成として説明したが、例えば、図示しないが、トラクタT等の牽引車を必要としない走行用のエンジン等の駆動部等を設けて自走式の構成とすることもできる。
【0059】
また、上記いずれの実施の形態においても、整地体30の設定に際して操作レバー体43の手動操作が必要となる構成について説明したが、例えば、図示しないが、モータ、シリンダ等の駆動源等を設けて遠隔操作で整地体30を各作業状態に設定できるようにしてもよい。
【0060】
さらに、上記いずれの実施の形態においても、操作レバー体43は、回動係合プレート41の前端部に一体に設けた構成として説明したが、例えば、図示しないが、トラクタTに乗ったまま容易に操作できるようトラクタT側に接近させるために、操作レバー体43と回動係合プレート41との間に連絡部材等を配設した構成とすることもできる。
【0061】
また、整地体30は、第1の整地体27、第2の整地体28等からなる構成には限定されず、例えば、図示しないが、弾性連結体26を設けずに、上部カバー体22の後端部にピン等を介して整地体の前端側を取り付けて、整地体を上下、左右方向に回動自在の構成としてもよい。
【0062】
【発明の効果】
求項記載の発明によれば、設定手段にて整地体を整地作業状態および土引き作業状態に加えてメンテナンス作業状態に設定でき、ロータリを後方に向けて露出させることができるので、従来の構成に比べて、ロータリのメンテナンス作業を効率良く行うことができ、また、簡単な構成であるにもかかわらず、操作レバー体の操作で作用係合体を回動係合体に対して係脱させることにより、整地体を整地作業状態、土引き作業状態、メンテナンス作業状態に適切に設定できる。
【0063】
請求項記載の発明によれば、操作レバー体と回動係合体とを一体に形成したので、操作レバー体と回動係合体との間に別体の連結部材等を設けた構成に比べて、部品点数が少なく、組立て作業を容易にでき、製造コストを低減できる。
【0064】
請求項記載の発明によれば、簡単にロータリを後方に向けて露出させることができ、作業効率良くロータリのメンテナンス作業ができる。
【図面の簡単な説明】
【図1】 本発明の農作業機の一実施の形態の側面図である。
【図2】 同上農作業機の部分平面図である。
【図3】 同上農作業機の土引きロック状態の側面図である。
【図4】 同上農作業機の回動係合体の側面図である。
【図5】 同上農作業機の回動係合体の側面図である。
【図6】 同上農作業機のメンテナンスロック状態の側面図である。
【図7】 同上農作業機の整地作業時の側面図である。
【図8】 同上農作業機の土引き作業時の側面図である。
【図9】 同上農作業機のメンテナンス作業時の側面図である。
【符号の説明】
1 農作業機
16 ロータリ
30 整地体
31 設定手段
41 回動係合体としての回動係合プレート
43 操作レバー体
48 移動許容部
50 作用係合体としての係合ピン
52 ピン当接部としての第2ピン当接部
56 第1係合部としての第1係合凹部
57 係合凹部である第2係合部としての第2係合凹部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agricultural machine having a leveling body for flattening soil cultivated and crushed by a rotary, and a rotary maintenance method.
[0002]
[Prior art]
A conventional agricultural machine includes, for example, a rotary that rotates and cultivates and cultivates soil, and a leveling body that is pivotably positioned behind the rotary. Then, the leveling body is set to a leveling work state in which the leveling work for flattening the soil cultivated by the rotary is set by the setting means including an operation lever body or the like, or the earthing work for performing the earthing work for attracting the soil is performed. Or set to working state.
[0003]
[Problems to be solved by the invention]
However, in the configuration of the conventional agricultural machine, for example, it takes time to clean the rotary or replace the claws of the rotary, and there is a possibility that the rotary maintenance work cannot be performed efficiently.
[0004]
This invention is made in view of such a point, and it aims at providing the agricultural work machine and the maintenance work method of a rotary which can perform the maintenance work of rotary efficiently.
[0005]
[Means for Solving the Problems]
Motomeko 1 agricultural machine according includes a rotary to tilling Harrow, and ground leveling member for leveling the plow Harrow soils in the rotary, the leveling member, flat the plow Harrow soils in the rotary A setting means that can be selectively set in each of a leveling work state for performing leveling work, a earthing work state for performing earthing work for attracting soil, and a maintenance work state in which the rotary is exposed backward. The setting means includes an operation lever body, a rotation engagement body that rotates in response to an operation of the operation lever body, and an action engagement body that can be engaged with and disengaged from the rotation engagement body. The rotating engagement body includes a movement allowing portion that allows movement of the action engagement body when the leveling body is in a leveling work state, and a first engagement that engages with the action engagement body when the leveling body is in a soiling work state. Joint and maintenance of the leveling body Those having a second engaging portion that engages the action engagement body when working state.
[0006]
In this configuration, the leveling body can be set to the maintenance work state in addition to the leveling work state and the earthing work state by the setting means, and the rotary can be exposed rearward. , it is possible to efficiently perform the maintenance work of the rotary, also without straw also written a simple configuration, by disengaging relative rotation engager action engagement body in operation of the operating lever member The leveling body can be appropriately set to the leveling work state, the earthing work state, and the maintenance work state.
[0007]
The farm machine according to claim 2 is the farm machine according to claim 1, wherein the operation lever body and the rotating engagement body are integrally formed.
[0008]
In this configuration, since the operation lever body and the rotation engagement body are integrally formed, the number of parts is smaller than that in a configuration in which a separate connecting member is provided between the operation lever body and the rotation engagement body. Less.
[0009]
According to a third aspect of the rotary maintenance work method of the present invention, the leveling body is rotated upward to a position where the rotary is exposed rearward, whereby the engaging pin of the rotating arm that is interlocked with the leveling body is rotated. A step of abutting on a combined pin abutting portion, and a pivoting operation of the operating lever body after the engaging pin and the pin abutting portion abut on each other to rotate the operating lever body. And a step of engaging the engaging pin with the engaging recess of the united body. The rotary can be easily exposed rearward, and the maintenance work of the rotary can be performed efficiently.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.
[0011]
In FIG. 1, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is a towing type scraper that is detachably mounted on a tractor T as a towing vehicle that is a traveling vehicle. While moving on the paddy field, the paddy field is cultivated and ground to level the surface of the paddy field in a horizontal plane.
[0012]
As shown in FIGS. 1 and 2, the farm work machine 1 includes a machine frame 2, and has a top mast 4 having a top pin 3 and a lower pin 5 on the upper front side of the machine frame 2. A three-point connecting portion 7 is provided as a tractor connecting portion which is a connecting portion composed of a pair of left and right lower arms 6, 6 and the like. The three-point connecting portion 7 is detachably connected to a three-point link mechanism (three-point hitch portion) T1 as a support device for lifting and lowering the hydraulic work machine provided at the rear portion of the tractor T. The three-point link mechanism T1 is composed of one top link a and a pair of left and right lower links b and b (see FIG. 7 and the like).
[0013]
As shown in FIGS. 1 and 2, the machine frame 2 has an elongated main frame 11 having a longitudinal direction in the left-right direction, and an input composed of a transmission case or the like at the longitudinal center of the main frame 11. A shaft holder 12 is attached, and the input shaft 13 in the front-rear direction is rotatably held by the input shaft holder 12. The input shaft 13 is connected to a PTO shaft (not shown) of the tractor T via a universal joint or the like, and inputs the driving force from the tractor T to the agricultural machine 1 side.
[0014]
Further, at both ends in the longitudinal direction of the main frame 11, the upper end portions of side plate frames 15 and 15 consisting of a pair of left and right chain cases and brackets which are opposed to each other and have a substantially rectangular shape in a side view having a longitudinal direction in the vertical direction. Is attached.
[0015]
Between the lower portions of the both side plate frames 15, a rotary 16 as a cultivated crushed soil body for cultivating crushed soil in a paddy field is rotatably provided. The rotary 16 has a left and right rotating shaft 17 that is horizontally mounted between the lower ends of both side plate frames 15, and a plurality of claws 18 are axially attached to a claw mounting portion (not shown) of the rotating shaft 17. Are attached in parallel with each other at intervals, and the claws 18 project radially from the rotating shaft 17. In addition, since the rotary shaft 17 of the rotary 16 is exposed rearward during the maintenance work of the agricultural work machine 1, for example, the claw mounting portion of the rotary shaft 17 is exposed rearward, and the replacement work of the claw 18 is easy. Will be able to.
[0016]
Further, a side cover body 21 as a plate-like protruding portion protrudes rearward from the lower rear end portion of each side plate frame 15, and the side cover bodies 21 and 21 are arranged at both side positions of the rotary 16. The side plate frame 15 and the soil discharged from the rotary 16 are prevented from being scattered to the side.
[0017]
On the other hand, at the upper position of the rotary 16, there is disposed an upper cover body 22 as a slightly curved cover body with an elongated rectangular plate shape having a longitudinal direction in the left-right direction and a center side in the width direction bulging upward. The upper cover body 22 prevents the soil discharged from the rotary 16 from scattering upward.
[0018]
The rear end portion of the upper cover body 22 is attached with a front end portion of an elastic coupling body 26 such as a rubber plate as an elastically deformable coupling body having an elongated substantially rectangular plate shape having a longitudinal direction in the left-right direction. A front end portion of the first leveling body 27 such as an elongated substantially rectangular plate-shaped flat plate having a longitudinal direction in the left-right direction is attached to the rear end portion of the elastic coupling body 26. At the rear end portion of the first leveling body 27, the front end portion of the second leveling body 28 such as an elongated substantially rectangular plate-shaped rake plate having a longitudinal direction in the left-right direction has a shaft portion 29 such as a pin in the left-right direction. It is attached to be rotatable.
[0019]
And the leveling body 30 which is leveling means is comprised by the elastic coupling body 26, the 1st leveling body 27, the 2nd leveling body 28, etc., and this leveling body 30 was cultivated and crushed by the rotary 16 It is a structure that flattens the soil and can be rotated up and down around the front end side based on deformation of the elastic coupling body 26, i.e., can be rotated so that the rear end side moves up and down around the front end side. ing. Further, the leveling body 30 is configured to be rotatable in the left-right direction based on the deformation of the elastic coupling body 26.
[0020]
On the other hand, in FIG. 1 and FIG. 2, 31 is a setting means which is an operation setting means as a switching operation mechanism for switching and setting the state of the leveling body 30. Ground leveling work (leveling free state shown in Fig. 1) that performs leveling work to flatten the soil cultivated and crushed in 16; And a maintenance work state (substantially horizontal maintenance lock shown in FIG. 6) in which the entire state of the rotary 16 is exposed (opened) rearward (opened). Each state) can be selectively set.
[0021]
First, the setting means 31 includes a pair of left and right mounting frames 32, 32 fixed to the input shaft holding portion of the machine frame. Between these mounting frames 32, a shaft-like spring holding member 36 holding a torsion spring 34 as a biasing body is bridged, and a stopper 37 which is a shaft-like locking means is bridged, and A plate support shaft 38 is bridged.
[0022]
A front end portion of a rotation engagement plate 41 as a rotation engagement body, which is a plate-like cam body that can rotate in the vertical direction within a predetermined range, is attached to the support shaft 38 at the upper rear end of the mounting frame 32. The pivot engagement plate 41 is pivotable in the vertical direction around the support shaft 38 in the left-right direction, that is, pivotable so that the rear end side is raised and lowered around the front end side. It is made into the composition.
[0023]
Here, as shown in FIG. 4, the rotation engagement plate 41 has a lever attachment step portion 42 formed at the front end portion which is one end portion. Then, the lower end portion of the rod-shaped operation lever body 43 is fixed to the lever mounting step portion 42, and the operation lever body 43 and the rotation engagement plate 41 are integrated, and the operation lever body 43 has the support shaft 38 attached thereto. The center can be turned. Further, a projecting spring mounting portion 45 is formed at the lower part of the front end portion of the rotating engagement plate 41, and one end side of the torsion spring 34 is inserted and connected to the connecting hole portion 46 of the spring mounting portion 45. The end side is inserted and connected to the connecting hole 32a of the left mounting frame 32 (FIG. 2).
[0024]
Further, the rotation engagement plate 41 has a movement allowance portion 48 formed in a notch at a lower end portion, and this movement allowance portion 48 is a lock pin as an action engagement body when the leveling body 30 is in a leveling operation state. A slender space for allowing the engagement pin 50 to move (moving in the direction B in FIG. 1), a first pin contact portion 51 as a stepped portion and a second pin contact as a pin contact portion. It is located between the part 52. In addition, a first stopper contact portion 53 is formed in the vicinity of the second pin contact portion 52 which is a pin contact portion on the front lower end surface of the rotating engagement body 41 and the spring mounting portion 45 A second stopper contact portion 54 is formed in the vicinity position. Each of the first stopper abutting portion 53 and the second stopper abutting portion 54 abuts against a predetermined portion of the cylindrical outer peripheral surface of the stopper 37 in a state of being biased by the torsion spring 34, and these first stoppers The rotation range of the rotation engagement plate 41 is set by the contact portion 53 and the second stopper contact portion 54.
[0025]
Further, the rotation engagement plate 41 is formed as a notch in the lower part of the rear side, and is a first engagement as an elongated first engagement portion that engages with the engagement pin 50 when the leveling body 30 is in the earthing work state. A recess 56 is provided. The lower open end of the elongated hole-shaped first engagement recess 56 communicates with one end of the movement allowing portion 48, and the upper end of the first engagement recess 56 extends to the vicinity of the upper end edge of the rotation engagement plate 41. The pin holding portion 56a is formed at the upper end portion. The width of the first engagement recess 56 is slightly larger than the outer diameter of the engagement pin 50, and the engagement pin 50 slides along the longitudinal direction of the first engagement recess 56 within the first engagement recess 56. Moving. The first pin contact portion 51 is positioned below the first engagement recess 56, and the first pin contact portion 51 protrudes forward from the lower end portion of the arcuate rear end edge portion 55. It has become.
[0026]
Further, the rotation engagement plate 41 is formed in a notch in the lower part on the front side, and engages with the engagement pin 50 when the leveling body 30 is in the maintenance work state (when the rotary maintenance work is performed). It has the 2nd engagement recessed part 57 as a 2nd engagement part which is. The opened lower end side of the second engaging recess 57 communicates with the other end side of the movement allowing portion 48. The second engaging recess 57 has a tip-like shape due to the presence of the protrusion 58 for retaining, and the upper side, which is the tip side, has a substantially circular shape with a size slightly larger than the outer diameter of the engaging pin 50. A shaft insertion hole 59 through which the support shaft 38 is inserted is formed on the front side of the rotation engagement plate 41. Further, the movement allowing portion 48, the first engaging recess 56 and the second engaging recess 57 are continuous with each other.
[0027]
On the other hand, as shown in FIG. 1 and FIG. 2, the setting means 31 includes an elongated rotary arm 61 having an engagement pin 50 in the substantially front-rear direction, and the front end of the rotary arm 61 is The lower end of the mounting frame 32 is pivotally attached via a support shaft 62 for the arm. The pivot arm 61 is configured to be pivotable in the vertical direction around the support shaft 62 in the left-right direction, that is, pivotable so that the rear end side moves up and down around the front end side. Note that an engaging pin 50 having a circular cross section whose axial direction coincides with the left-right direction is fixed to the upper front portion of the rotating arm 61.
[0028]
Further, an upper end portion of a connecting rod 63 such as a suspension rod having a longitudinal direction in a substantially vertical direction is attached to the rear end portion of the rotating arm 61 so as to be rotatable via a shaft portion 64 such as a pin in the left-right direction. It has been. The lower end portion of the connecting rod 63 is rotatably connected to the connecting plate portion 28a of the second leveling body 28 via a shaft portion 65 such as a pin in the left-right direction.
[0029]
Next, the operation and the like of the above embodiment will be described.
[0030]
First, the case where the leveling work (pricking work) is performed using the agricultural machine 1 will be described.
[0031]
When performing the leveling work, the operator sets the leveling body 30 in the leveling work state shown in FIG. 1, that is, the free state in which the ground leveling body 30 can be rotated based on the force received from the field side.
[0032]
In the state shown in FIG. 1, the engaging pin 50 of the rotating arm 61 is located in the movement permitting portion 48 and is free to move in the direction B in FIG. The support shaft 62 can be rotated around the support shaft 62. Further, the rotation engagement plate 41 is urged in a direction to rotate upward by the torsion spring 34, and the second stopper contact portion 54 is in a state of being pressed against the predetermined portion on the front side of the stopper 37.
[0033]
Then, as shown in FIG. 7, the farm work machine 1 is moved in the forward direction by the pulling operation of the tractor T in a state where the farm work machine 1 is lowered to a predetermined position by the three-point link mechanism T <b> 1 of the tractor T.
[0034]
Then, the cultivated crushed soil is rotated by the rotary 16 driven and rotated by the driving force from the tractor T, and the crushed soil discharged and raised from the rotary 16 is transferred to the first leveling body 27 and the second leveling body 28 of the leveling body 30. Flattened and suppressed. Thus, the surface portion of the paddy field is flattened in a horizontal plane.
[0035]
During this operation, the engaging pin 50 moves in the movement allowing portion 48 via the rotating arm 61 and the connecting rod 63 in response to the vertical movement of the second leveling body 28 that is a leveling plate. Since the movement of the engagement pin 50 is restricted by the first pin contact portion 51 and the second pin contact portion 52, the second leveling body 28 moves up and down within a predetermined range without moving up and down more than necessary. To do.
[0036]
Next, the case where the earth work is performed using the agricultural machine 1 will be described.
[0037]
Before moving the above-mentioned scraping work, when moving the soil that has risen high by dredging or the like to the lower side, the operator uses the setting means 31 to move the leveling body 30 to the earthing work state shown in FIG. Set to a slanted, almost vertical, earth-moving lock state.
[0038]
For example, when the leveling body 30 is switched from the leveling work state shown in FIG. 1 to the earthing work state shown in FIG. 3, the worker riding on the tractor T lifts the agricultural work machine 1 with the three-point link mechanism T1 and moves the leveling body 30. The operation lever body 43 is fixed to the predetermined position on the rear side of the stopper 37 with the first stopper abutting portion 53 of the rotation engagement plate 41 integral with the operation lever body 43, while maintaining the state where the operation lever body 43 is lifted from the field scene or the like. A rotation operation is performed in a predetermined direction (A direction in the figure) until the part abuts on the part (the operation lever body 43 is pushed).
[0039]
Then, the engagement pin 50 that has been in contact with the first pin contact portion 51 enters the first engagement recess 56 and moves along the first engagement recess 56 to move the pin holding portion 56a at the upper end. Is held engaged.
[0040]
In response to the movement of the engagement pin 50, the second leveling body 28 is pushed downward by the connecting rod 63, and the second leveling body 28 rotates downward about the shaft portion 29. As a result, the first leveling body 27 and the second leveling body 28 are in a state of being positioned on substantially the same plane and in a non-rotatable earth pulling locked state (state of FIG. 3).
[0041]
Then, as shown in FIG. 8, the farm work machine 1 is moved in the forward direction by the pulling operation of the tractor T in a state where the farm work machine 1 is lowered to a predetermined position by the three-point link mechanism T <b> 1 of the tractor T. Then, the raised soil A is drawn toward the lower side by the second leveling body 28 of the leveling body 30.
[0042]
After the earthing work is completed, for example, when the leveling body 30 is switched from the earthing work state shown in FIG. 3 to the leveling work state shown in FIG. 1, an operator riding on the tractor T firstly, as shown in FIG. With the three-point link mechanism T1 lifting the farm implement 1 and maintaining the leveling body 30 floating from the field scene, the operating lever body 43 is engaged with the engaging pin 50 and the first pin of the rotating engaging plate 41. Until it comes into contact with the contact portion 51, it is rotated in a predetermined direction (direction B in the drawing) (the operation lever body 43 is pulled).
[0043]
During this operation, the urging direction of the torsion spring 34 changes. That is, the rotation engagement plate 41 is urged in the direction to rotate downward by the torsion spring 34 in the first half of the operation (clockwise direction, which is the direction of the white arrow in FIG. 4). The spring 34 is urged in a direction to rotate upward (counterclockwise direction which is the direction of the white arrow in FIG. 5).
[0044]
After the pulling operation of the operation lever body 43, the operator lowers the farm work machine 1 with the three-point link mechanism T1, and grounds the lower end side of the leveling body 30 to, for example, a field scene. Then, as shown in FIG. 5, the engagement pin 50 that has been in contact with the upper surface 51 a of the first pin contact portion 51 in the first engagement recess 56 moves into the movement allowance portion 48, and the first It will be in the state contact | abutted to the front surface 51b of the pin contact part 51 (state of the dashed-two dotted line of FIG. 5). That is, the engaging pin 50 is separated from the upper surface 51a of the first pin contact portion 51 based on the grounding of the leveling body 30, and the rotating engaging plate 41 is rotated in the direction B in the figure by the biasing force of the torsion spring 34. As a result, the engagement pin 50 that has been in contact with the upper surface 51a of the first pin contact portion 51 has moved into the movement allowing portion 48 and has been in contact with the front surface 51b of the first pin contact portion 51. (The state of the two-dot chain line in FIG. 5).
[0045]
In this way, the engagement between the first engagement recess 56 and the engagement pin 50 is released, and the leveling body 30 is unlocked, so that the leveling body 30 can be rotated suitable for cutting work, transport movement, and the like. Become free.
[0046]
Next, a case where maintenance work of the agricultural working machine 1 is performed will be described.
[0047]
For example, when cleaning the claw 18 of the rotary 16, the inner surface side of the upper cover body 22, the inner surface side of the side cover body 21, etc., replacing the claw 18 of the rotary 16, etc., the operator uses the setting means 31 30 is set to the maintenance work state shown in FIG. 6, that is, the substantially horizontal maintenance lock state.
[0048]
For example, when the leveling body 30 is switched from the leveling work state to the maintenance work state for the maintenance of the rotary 16 shown in FIG. 6, the operator lifts the agricultural work machine 1 with the three-point link mechanism T1 and moves the leveling body 30 to the field scene. Alternatively, after getting up from the floor of the warehouse (state shown in FIG. 1), get off the tractor T.
[0049]
Then, after the worker turns around to the rear side of the farm work machine 1, the leveling body 30 is rotated upward with one hand, and the engagement pin 50 of the rotation arm 61 is moved to the first position of the rotation engagement plate 41. The two-pin contact part 52 is brought into contact.
[0050]
After the engagement pin 50 and the second pin contact portion 52 are brought into contact with each other, the operator rotates the operation lever body 43 in any predetermined direction (direction A in the drawing) with the other hand, The engagement pin 50 enters the second engagement recess 57 and the engagement pin 50 is engaged and held in the second engagement recess 57. Thus, the first leveling body 27 and the second leveling body 28 are in a state of being positioned on substantially the same plane and in a maintenance lock state in which they cannot rotate (the state of FIG. 6).
[0051]
In the state shown in FIG. 6 or the state shown in FIG. 9 in which the agricultural working machine 1 is lifted to a higher position by the three-point link mechanism T1, the second leveling body 28 is positioned higher than the rotary shaft 17 of the rotary 16 or the rotary. Positioned and fixed at a position higher than the whole 16 and the like, the rotary 16 is held in an exposed state opened rearward. For this reason, the operator can easily perform maintenance work on the rotary 16 and the like.
[0052]
For example, when the leveling body 30 is switched from the maintenance work state shown in FIG. 6 to the leveling work state shown in FIG. 1 after the maintenance work, the worker on the tractor T lifts the farm work machine 1 with the three-point link mechanism T1. While maintaining the state where the leveling body 30 is lifted from the field scene or the like, the operation lever body 43 is rotated in a predetermined direction (B direction in the drawing), and the engagement between the second engagement recess 57 and the engagement pin 50 is performed. Release the match.
[0053]
Then, as shown in FIG. 1, the leveling body 30 is rotated downward by its own weight, and the engagement pin 50 moves rearward in the movement allowance portion 48 to the front surface 51 b of the first pin contact portion 51. It comes into contact. In this way, the leveling body 30 is released from the locked state, and the leveling body 30 enters a free-rotating state suitable for scraping work, transportation movement, and the like.
[0054]
As described above, according to the above embodiment, the leveling body 30 is placed in the leveling work state (skinning work state) and the soil by the setting means 31 having the single operating lever body 43 that can be operated while riding on the tractor T. Since the maintenance work state can be set in addition to the two work states (the pulling work state), the rotary 16 can be easily exposed to the rear, and the maintenance work of the rotary 16 can be performed efficiently.
[0055]
In other words, the switching operation mechanism, which is the setting means 31 for the earthing fixing and the earthing fixing release (at the time of scraping work or transporting movement), can be further fixed at the maintenance position. As shown in FIG. 9, the entire leveling body 30 can be positioned and fixed at a position higher than the upper end position of the rotary 16, as shown in FIG. Since it can be held in a horizontal position, for example, a slightly slanted front / rear / high position, the ground leveling body 30 does not get in the way when cleaning the claws 18 of the rotary 16 and replacing the claws 18 of the rotary 16 and so on. Maintenance work is possible.
[0056]
In addition, since the setting means 31 that is one switching operation mechanism can be set in three states of the leveling work state, the earthing work state, and the maintenance work state, for example, a configuration in which a means for setting the maintenance work state is provided separately Compared to the above, the configuration can be simplified, the assembling work can be facilitated, the manufacturing cost can be reduced, and the appearance is good.
[0057]
On the other hand, since the operation lever body 43 and the rotation engagement plate 41 are integrally formed as one member, a separate connecting member or the like is provided between the operation lever body 43 and the rotation engagement plate 41. Compared to the provided configuration, the number of parts is small, assembly work can be facilitated, and manufacturing costs can be reduced.
[0058]
In the above embodiment, the agricultural working machine 1 such as a scraping device has been described as a towing type structure that is used by being attached to the tractor T. However, for example, although not shown, a towing vehicle such as the tractor T is required. It is also possible to provide a self-propelled configuration by providing a drive unit such as a traveling engine that does not.
[0059]
In any of the above embodiments, the configuration that requires manual operation of the operation lever body 43 when setting the leveling body 30 has been described. For example, although not shown, a drive source such as a motor or a cylinder is provided. Thus, the leveling body 30 may be set to each work state by remote control.
[0060]
Further, in any of the above-described embodiments, the operation lever body 43 has been described as a structure integrally provided at the front end portion of the rotation engagement plate 41. However, for example, although not shown, the operation lever body 43 can be easily mounted on the tractor T. In order to make it closer to the tractor T side so that it can be operated, a connecting member or the like may be provided between the operation lever body 43 and the rotation engagement plate 41.
[0061]
Further, the leveling body 30 is not limited to the configuration including the first leveling body 27, the second leveling body 28, and the like. For example, although not shown, the elastic coupling body 26 is not provided and the upper cover body 22 is not provided. The front end side of the leveling body may be attached to the rear end portion via a pin or the like, and the leveling body may be configured to be rotatable in the vertical and horizontal directions.
[0062]
【The invention's effect】
According to the invention Motomeko 1, can be set to a maintenance work state in addition to the leveling work conditions and soil pulling work status ground leveling member at setting means, it can be exposed toward the rotary backwards, conventional compared to the configuration, it is possible to efficiently perform the maintenance work of the rotary, also without straw also written a simple structure, engaged against rotating engagement body action engagement body in operation of the operating lever member By removing, the leveling body can be appropriately set to the leveling work state, the earthing work state, and the maintenance work state.
[0063]
According to the second aspect of the present invention, since the operation lever body and the rotation engagement body are integrally formed, as compared with a configuration in which a separate connecting member or the like is provided between the operation lever body and the rotation engagement body. Thus, the number of parts is small, the assembly work can be facilitated, and the manufacturing cost can be reduced.
[0064]
According to the third aspect of the present invention, the rotary can be easily exposed rearward, and the maintenance work of the rotary can be performed with high work efficiency.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of an agricultural machine according to the present invention.
FIG. 2 is a partial plan view of the agricultural working machine.
FIG. 3 is a side view of the agricultural work machine according to the embodiment of the present invention in a soiling locked state.
FIG. 4 is a side view of a rotating engagement body of the agricultural working machine.
FIG. 5 is a side view of the rotational engagement body of the agricultural working machine.
FIG. 6 is a side view showing the maintenance lock state of the agricultural working machine.
[Fig. 7] Fig. 7 is a side view of the above agricultural working machine during leveling work.
FIG. 8 is a side view of the agricultural working machine when soiling is performed.
FIG. 9 is a side view showing the maintenance work of the agricultural machine.
[Explanation of symbols]
1 Agricultural machine
16 Rotary
30 Leveling body
31 Setting method
41 Rotating engagement plate as rotating engagement body
43 Control lever body
48 Allowable movement part
50 Engagement pin as working engagement body
52 Second pin contact part as pin contact part
56 First engaging recess as the first engaging portion
57 2nd engagement recessed part as 2nd engaging part which is an engagement recessed part

Claims (3)

耕耘砕土するロータリと、
このロータリにて耕耘砕土された土を平らにする整地体と、
この整地体を、前記ロータリにて耕耘砕土された土を平らにする整地作業を行う整地作業状態、土を引き寄せる土引き作業を行う土引き作業状態、および、前記ロータリが後方に向って露出するメンテナンス作業状態の各々の状態に選択的に設定可能な設定手段とを具備し、
前記設定手段は、操作レバー体と、この操作レバー体の操作に応じて回動する回動係合体と、この回動係合体に対して係脱可能な作用係合体とを備え、
前記回動係合体は、
前記整地体の整地作業状態時に前記作用係合体の移動を許容する移動許容部と、
前記整地体の土引き作業状態時に前記作用係合体と係合する第1係合部と、
前記整地体のメンテナンス作業状態時に前記作用係合体と係合する第2係合部とを有している
ことを特徴とする農作業機。
Rotary rotary tillage,
A leveling body to flatten the soil cultivated by this rotary,
The leveling body is subjected to a leveling work state for leveling the soil cultivated and crushed by the rotary, a ground leveling work state for performing a ground leveling work to draw the soil, and the rotary is exposed rearward. Setting means capable of being selectively set in each state of the maintenance work state,
The setting means includes an operation lever body, a rotation engagement body that rotates according to an operation of the operation lever body, and an action engagement body that can be engaged with and disengaged from the rotation engagement body.
The rotating engagement body is
A movement allowing portion for allowing movement of the action engagement body during the leveling work state of the leveling body;
A first engagement portion that engages with the action engagement body during the earthing work of the leveling body;
A farm working machine comprising: a second engagement portion that engages with the action engagement body when the leveling body is in a maintenance work state.
操作レバー体と回動係合体とが一体に形成されている
ことを特徴とする請求項記載の農作業機。
Agricultural machine according to claim 1, wherein the operating lever member and the rotating engagement body are integrally formed.
ロータリが後方に向って露出する位置まで整地体を上方に回動させることにより、この整地体と連動する回動アームの係合ピンを回動係合体のピン当接部に当接させる工程と、
前記係合ピンと前記ピン当接部とが当接した後に、操作レバー体を回動操作することにより、この操作レバー体と連動する前記回動係合体の係合凹部に前記係合ピンを係合させる工程と
を具備していることを特徴とするロータリのメンテナンス作業方法。
Rotating the leveling body upward to a position where the rotary is exposed rearward, thereby bringing the engaging pin of the rotating arm linked to the leveling body into contact with the pin contact portion of the rotating engagement body; ,
After the engagement pin and the pin contact portion abut, the operation lever body is rotated to engage the engagement pin with the engagement recess of the rotation engagement body interlocked with the operation lever body. And a step of combining the rotary maintenance work method.
JP2000387775A 2000-12-20 2000-12-20 Agricultural machine and rotary maintenance method Expired - Lifetime JP3643531B2 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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JP3643531B2 true JP3643531B2 (en) 2005-04-27

Family

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4205599B2 (en) * 2004-01-23 2009-01-07 小橋工業株式会社 Pricking machine
JP5743313B2 (en) * 2010-11-25 2015-07-01 松山株式会社 Agricultural machine
JP5787442B2 (en) * 2011-09-06 2015-09-30 松山株式会社 Rotary work machine
JP5956300B2 (en) * 2012-03-15 2016-07-27 小橋工業株式会社 Tillage work machine
JP6076674B2 (en) * 2012-10-09 2017-02-08 小橋工業株式会社 Shaving machine
CN106888585A (en) * 2017-01-24 2017-06-27 南宁市武拖机械有限责任公司 One kind is ploughed and uses tractor

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