JP3751875B2

JP3751875B2 - Rice transplanter

Info

Publication number: JP3751875B2
Application number: JP2001354122A
Authority: JP
Inventors: 邦夫土井
Original assignee: Yanma Agricultural Equipment Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd
Priority date: 2001-11-20
Filing date: 2001-11-20
Publication date: 2006-03-01
Anticipated expiration: 2021-11-20
Also published as: JP2003153622A

Description

【０００１】
【発明の属する技術分野】
本発明は苗載台及び苗植付爪などを備えて連続的に苗植作業を行う田植機に関する。
【０００２】
【発明が解決しようとする課題】
例えば特願２００１−６６６０２にあっては、横フレームより右外側に突出させるＬ形状の支持ステーに横送りネジ軸の外端側を軸受板を介し支持させた構造のものがあるが、支持ステーに取付ける軸受板とネジ軸とは直交関係にあって、苗載台の横送り時には支持ステーや軸受板にネジ軸の左右横方向の力を作用させて、支持ステーや軸受板を変形させるなどの恐れがあった。また、支持ステーによるネジ軸の支持も片持ち構造のため、横送り精度に秀れた支持を行うためには充分な強度を確保する必要があり、重量の増大化やコスト高となる。
【０００３】
【課題を解決するための手段】
請求項１に係る発明は、苗載台を左右方向に横送りする横送り軸を備え、走行車にリンク機構を介して連結するための植付フレームの横フレームと、前記横送り軸とを略平行に配置してなる田植機において、前記横フレームの一側端部には苗送りケースを固設し、前記横フレームの他側端部のフランジ部には、複数の軸状部材を、前記横送り軸と略平行に取付けるように、機外側に向けて突設し、前記軸状部材の先端側には、前記横送り軸の軸受を配置するための軸受部材を設けたものであるから、横送り軸の一側を複数の軸状部材で堅固に支持して、横送り軸を簡単に支持できるものである。
【０００４】
請求項２に係る発明は、サイドマーカを起立させて保持するためのマーカ収納フックを、前記軸受部材に設けたものであるから、軸受部材にサイドマーカの収納ガイドの機能をもたせて、サイドマーカの確実な起立収納保持を図ると共に、マーカ収納機構のコスト低減や重量の軽減化を容易にできるものである。
【０００５】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図１は乗用田植機の側面図、図２は同平面図を示し、図中１は作業者が搭乗する走行車であり、エンジン２を車体フレーム３に搭載させ、前後方向に長手状のミッションケース４前方にフロントアクスルケース５を介して水田走行用前輪６を支持させると共に、前記ミッションケース４後部のリヤアクスルケース７に水田走行用後輪８を支持させる。そして前記エンジン２等を覆うボンネット９両側に予備苗載台１０を取付けると共に、作業者が搭乗する車体カバー１１によって前記ミッションケース４等を覆い、前記車体カバー１１後側の運転台１２上面に運転席１３を取付け、その運転席１３の前方で前記ボンネット９後部に操向ハンドル１４を設ける。
【０００６】
また、図中１５は４条植え用の苗載台１６並びに複数の苗植付爪１７などを具備する植付部であり、前高後低の合成樹脂製の前傾式苗載台１６を下部レール１８及び上部ガイドレール１９を介して植付フレーム２０に左右往復摺動自在に支持させると共に、一方向に等速回転させるロータリケース２１を前記植付フレーム２０に支持させ、該ロータリケース２１の回転軸芯を中心に対称位置に一対の爪ケース２２・２２を配設し、その爪ケース２２・２２先端に苗植付爪１７・１７を取付ける。また前記植付フレーム２０の左右両端側に左右サイドフレーム２３・２３を立設させて苗載台１６を支持させ、植付フレーム２０左右中央のヒッチブラケット２４をトップリンク２５及びロワーリンク２６を含む昇降リンク機構２７を介し走行車１に連結させ、走行車１に設ける油圧昇降シリンダ２８をロワーリンク２６に連結させ、該昇降シリンダ２８の駆動時に昇降リンク機構２７を介し植付部１５を昇降させると共に、植付部１５の下降時には左右に往復摺動させる苗載台１６から一株分の苗を植付爪１７によって取出し、連続的に苗植え作業を行うように構成する。
【０００７】
また、図中２９は主変速レバー、３０は機体の搭乗位置は勿論のこと機体から降りた位置で走行停止などの操作を可能とさせる苗継ぎレバー、３１は植付昇降レバー、３２は主クラッチペダル、３３・３３は左右ブレーキペダル、３４は２条分均平用センタフロート、３５は１条分均平用サイドフロート、３６は４条用側条施肥機、３７・３７は後輪８の外側に配備させる補助車輪である。
【０００８】
前記側条用施肥機３６は、肥料を入れる肥料ホッパ３８と、肥料を供給する肥料繰出部である肥料繰出ケース３９と、フロート３４・３５の側条作溝器４０にフレキシブル形搬送ホース４１を介して肥料を排出させるターボブロワー型送風機４２と、円筒形のエアタンク４３とを備えると共に、エアタンク４３右側端に送風機４２を取付け、４条分４組の肥料繰出ケース３９をエアタンク４３上側に配設させ、肥料ホッパ３８の後側に前記苗載台１６の上端を近接配備させている。
【０００９】
図３乃至図１２に示す如く、前記植付フレーム２０は各２条分用のパイプ製左右縦フレーム４４ａ・４４ｂと、左右縦フレーム４４ａ・４４ｂの前端間を連結するパイプ製横フレーム４５とを備え、バルジ加工で形成する十字形フレーム継手（十字管継手）４６を各縦フレーム４４ａ・４４ｂ後端に溶接固定させ、回転軸４７を介し前記ロータリケース２１を継手４６に回転自在に支持させると共に、バルジ加工で形成する左右十字形フレーム継手（十字管継手）４８ａ・４８ｂを縦フレーム４４ａ・４４ｂと横フレーム４５に溶接固定させて、これら縦及び横フレーム４４ａ・４４ｂ・４５を一体連結させて軽量の植付フレーム２０を低コストに形成するように構成している。
【００１０】
また、右フレーム継手４８ｂの前端部に植付入力軸４９を設け、前記ミッションケース４のＰＴＯ軸からの駆動力を自在継手軸５０を介し入力軸４９に伝達させ、横フレーム４５に内設する植付駆動軸５１にベベルギヤ４９ａ・５２を介し入力軸４９を連動連結させると共に、左右縦フレーム４４ａ・４４ｂに内設する植付爪駆動軸５３をベベルギヤ５２・５４及び安全クラッチ５５を介し植付駆動軸５１に連結させ、前記回転軸４７にベベルギヤ５６ａ・５６ｂ及び植付爪ユニットクラッチ５７を介し植付爪駆動軸５３を連動連結させて、苗植付爪１７の駆動を行うように構成している。
【００１１】
さらに、苗載台１６の左右方向の横送りと苗載台１６上の苗の縦送りを行う苗送り軸５８をアルミダイキャスト製の苗送りケース５９を介し植付駆動軸５１の左端に連動連結させるもので、左フレーム継手４８ａの左側フランジ部６０に苗送りケース５９の一端側フランジ部６１をボルト止め固定させ、ケース５９の他端側に苗送り軸５８の左端を挿入支持させ、苗送りケース５９内の駆動軸５１と苗送り軸５８間に高低変速用の２組の切換ギヤ６２・６３で形成する変速機構６４を介在させ、機体略中心に対し苗送り軸５８の左半分を苗縦送りカム軸６５として設け、機体略中心に対し苗送り軸５８の右半分を苗台横送りネジ軸６６として設けて、苗送り軸５８の高低２速の回転駆動時に苗載台１６の横送りと、苗載台１６上の苗の縦送りを行うように構成している。
【００１２】
図３０、図３３にも示す如く、前記植付フレーム２０の前端下側に植付深さ調節支点軸６７を回動自在に枢支させ、各フロート３４・３５後端上面のブラケット６８・６９を植付深さ調節リンク７０・７１を介し前記支点軸６７に連結させ、センタフロート３４の前端に連結する昇降リンク７２によってフロート傾斜角度（植付深さ）の変化を検出すると共に、前記支点軸６７に基端を固設する植深調節レバー７３によって基準植付深さの調節を行うように構成している。
【００１３】
なお、前記支点軸６７の左右両端にはＬ形状の左右サイドバンパ７４をバンパ取付部材７５を介し折畳み自在に外方に突設させている。
【００１４】
図１３乃至図１６にも示す如く、左右サイドマーカ７６の基端を前記支点軸６７左右両端近傍に折畳み（起伏）自在に支持させるもので、前記支点軸６７のバンパ取付部材７５より内側近傍位置のサイドマーカ７６基端の折曲部７６ａを回動自在に支持させ、サイドマーカ７６基端に固設するマーカアーム７８とバンパ取付部材７５間に捩りコイルバネ式のマーカ倒伏バネ７９を介設させ、サイドマーカ７６を起立操作する起立ワイヤ８０を前記マーカアーム７８に連結させ、サイドマーカ７６の起立操作時にマーカアーム７８の係合軸８１に係合させてサイドマーカ７６を起立保持するフック８２を支点軸６７にピン８３を介して回動自在に設け、フックバネ８４力に抗しマーカ７６を起立保持するフック８２の係合解除を行う解除ワイヤ８５をフック８２と植付昇降レバー３１間に設け、植付部１５の上昇動作に連動して起立ワイヤ８０を引張ってサイドマーカ７６を起立させフック８２に係合保持させると共に、植付昇降レバー３１で左右何れか一方のフック８２の係合解除を行って左或いは右サイドマーカ７６を横方向に倒伏させるように構成している。
【００１５】
図８、図９、図１４、図１５にも示す如く、前記車体フレーム３の後部フレーム８６にワイヤ受け８７を介し左右サイドマーカ７６用２本の起立ワイヤ８０の一端を、左右マーカアーム７８に起立ワイヤ８０の他端を連結させ、機体中心ライン上に配置させるロワーリンク２６を中心として右側に自在継手軸５０を、左側に左右サイドマーカ７６用２本の起立ワイヤ８０を配設させるもので、ロワーリンク２６の後部左外側に起立ワイヤ８０のアウタチューブ８０ａ一端側のアウタ受け８８を固設すると共に、アウタチューブ８０ａ他端側のアウタ受け８９を支点軸６７に固設し、前記ワイヤ受け８７とマーカアーム７８とを起立ワイヤ８０のインナワイヤ８０ｂで連結して、植付部１５の上昇に連動して左右サイドマーカ７６を起立させるように構成している。
【００１６】
上記からも明らかなように、植付部１５の上昇に連動してマーカワイヤである起立ワイヤ８０を介し左右サイドマーカ７６を折畳みする田植機において、機体中心に対し左右一側に植付部１５に駆動力を入力する植付伝動軸である自在継手軸５０を、他側にワイヤ８０を配設したことによって、自在継手軸５０との接触を回避させるクランプなどの使用に気をつかうことなく、継手軸５０とワイヤ８０の巻き付きを確実に防止して継手軸５０とワイヤ８０の動作の安定保持を図ると共に、継手軸５０とワイヤ８０との左右重量バランスを良好とさせて機体の安定保持を図ることができる。
【００１７】
また、起立ワイヤ８０のアウタ部材であるアウタチューブ８０ａをロワーリンク２６に、インナワイヤ８０ｂを車体フレーム３にそれぞれ配設させたことによって、従来のロワーリンク２６及び植付ヒッチにインナワイヤ８０ｂ及びアウタチューブ８０ａを配設する構造に比べ、機体外側で前後方向に略平行にして簡潔に配設して、組付・調整など容易とさせ、操作ロスなども低減させることができる。
【００１８】
さらに、起立ワイヤ８０をロワーリンク２６側方の近傍位置に配設させたことによって、昇降リンク機構２７の影響を受けることなく、植付部１５の昇降時に起立ワイヤ８０が突っ張ったり、弛んだりするのを防止して、簡潔な起立ワイヤ８０の配置構造のものでサイドマーカ７６の確実な起立動作などを可能とさせて信頼性を向上させることができる。
【００１９】
またこの場合、起立ワイヤ８０はロワーリンク２６側方でロワーリンク２６と略同一高さ位置に配設して、サイドマーカ７６の引上げストロークを充分に確保し、単一のアウタ受け８８に２本の起立ワイヤ８０を一体支持させて、ワイヤ８０を他部品に干渉させることのないワイヤ寿命が良好で低コスト、軽量の配置を可能とさせている。
【００２０】
図１８、図１９にも示す如く、苗載台１６下端の苗取出板９０を上下動させて苗取量を調節する苗取調節板９１を、植付フレーム２０のガイド部材９２にガイドロッド９３を介し上下動自在に支持させ、ガイドロッド９３上部に切溝９４を係合させる係合板９５を左右方向の苗取量調節軸９６に設け、該苗取量調節軸９６の左端側に連結する苗取量調節レバー９７の操作によって、苗植付爪１７が取出す１株分の苗量の調節を行うもので、苗送りケース５９及び縦フレーム４４ａ・４４ｂに固設する各軸受板に苗取量調節軸９６の横軸部９６ａを回動自在に支持させ、苗送りケース５９より外方で横軸部９６ａの左端側を前方に略９０度に折曲げて前後方向の縦軸部９６ｂに形成し、苗送りケース５９の前方で縦軸部９６ｂの前端を内方に略９０度に折曲げて、レバー取付部９６ｃに形成して、該取付部９６ｃにＬ形状の調節レバー９７基端を２本のボルト９８で固定させ、苗取量調節レバー９７先端をレバーガイド９９の前方斜上方に延設させ、左後輪８と補助車輪３７間に臨ませるように設けて、各部９６ａ・９６ｂ・９６ｃで苗送りケース５９を囲んで保護すると共に、苗送りケース５９と苗取量調節軸９６の隙間１００で前記搬送ホース４１の位置決めを行うように構成している。
【００２１】
図１１、図１２にも示す如く、前記ヒッチブラケット２４はトップリンク２５及びロワーリンク２６を連結させる上下リンク軸１０１・１０２を有し、植付フレーム２０の横フレーム４５略中央に溶接で抱持固定する支点部材１０３をブラケット２４の下端にローリング支点軸１０４を介して回動自在に連結させ、ブラケット２４上端の取付座１０５に油圧ローリングシリンダ１０６を取付け、ローリングシリンダ１０６のピストンロッド１０７先端を右サイドフレーム２３上端の固定ブラケット１０８に連結させ、複動型の前記ローリングシリンダ１０６を往復駆動するギヤポンプ１０９と、該ポンプ１０９を正逆駆動する可逆型電動モータ１１０と油タンク１１１とをローリングシリンダ１０６に一体的に設け、前記取付座１０５上面に固設する受板１１２と苗載台１６裏側面の上部ガイドレール１９左右端間にローリング補正バネ１１３を張設して、ヒッチブラケット２４左側の横フレーム４５に設けた振子型ローリングセンサ１１４が植付部１５の傾斜を検出するとき、ローリングシリンダ１０６のピストンロッド１０７を進退制御してローリング支点軸１０４回りに植付部１５を左右に揺動させて植付部１５の水平保持を図るように構成している。
【００２２】
また、前記横フレーム４５と支点部材１０３右端とに溶接固定させるブラケット１１５を設け、該ブラケット１１５と右サイドフレーム２３上端のブラケット１０８との間を斜めステー１１６で補強連結させて、最も軽量構造のもので右サイドフレーム２３の剛性を向上させて、ローリング性能の確保を図るように構成している。
【００２３】
図１０、図１２、図１６、図１７にも示す如く、前記苗送り軸５８の中間及び右端を前記ブラケット１１５及び軸受板１１７を介し横フレーム４５に支持させるもので、右フレーム継手４８ｂの右側フランジ部１１８より右外側に苗送り軸５８と略平行な２本のパイプ１１９を延設させ、該パイプ１１９の延設端に軸受板１１７を取付けて、前記ブラケット１１５と軸受板１１７とに軸受１２０を介し前記横送りネジ軸６６の両端部を支持させ、前記縦送りカム軸６５の右端を角パイプ製の継手１２１を介しネジ軸６６左端に、また縦送りカム軸６５の左端を苗送りケース５９にそれぞれ連結支持させて、これら左右に分割される縦送りカム軸６５及び横送りネジ軸６６を両持ち構造とさせて支持強度を向上させると共に、縦送りカム軸６５の右端を同一軸芯で横送りネジ軸６６に連結させて縦送り精度を向上させるように構成している。前記縦送りカム軸６５は鉄製中空パイプで、また横送りネジ軸６６は中実鉄材で形成して、機体中心よりも左側に前記苗送りケース５９と縦送りカム軸６５を配置し、機体中心よりも右側に重さの大きい横送りネジ軸６６を振り分け配置させて、植付部１５の左右重量のバランスを良好とさせるように設けている。
【００２４】
また図７、図１０、図２０、図３７に示す如く、前記横送りネジ軸６６には滑り子１２２をネジ結合させ、苗載台１６に滑り子受け１２３を介して滑り子１２２を連結させて、横送りネジ軸６６の一方向の回転時に苗載台１６を左右往復移動させると共に、前記縦送りカム軸６５には左右縦送りカム１２４を有して、苗載台１６が左右移動端まで移動するときには従動カム１２５に縦送りカム１２４を当接させ一方向クラッチ１２６を介し縦送りローラ軸１２７を一方向に回転させて、苗載台１６下端側に設ける上下一対のローラ軸１２７・１２８の縦送りローラ１２９・１３０間に巻回する縦送りベルト１３１を苗１株分下端方向に移動させるように構成している。
【００２５】
さらに図１６、図１７に示す如く、前記右側フランジ部１１８及び軸受板１１７はネジ軸取付用の切欠き１３２・１３３を上部に形成し、横送りネジ軸６６に軸受１２０を装着させた状態でフランジ部１１８及び軸受板１１７への取付けを容易に可能とさせると共に、右サイドマーカ７６の最収納時にマーカ７６を係合保持する棒状のマーカ収納フック１３４を軸受板１１７上側部に溶接固定させている。
【００２６】
また、前記右側フランジ部１１８の下側一部を下方に延長させ、右サイドフロート３５の上げストッパ部１３５に形成して、右サイドフロート３５が揺動で上げ動作したときにも他の部品との干渉を防止するように構成している。
【００２７】
上記からも明らかなように、苗載台１６を左右方向に横送りする横送り軸である横送りネジ軸６６を備えた田植機において、植付フレーム２０から横送りネジ軸６６と略平行に軸状部材であるパイプ１１９を複数延設させ、横送りネジ軸６６の一側を支持する軸受部材である軸受板１１７を前記パイプ１１９に取付けることによって、横送りネジ軸６６の一側を複数のパイプ１１９で変形させることなく支持して、横送りネジ軸６６による力をパイプ１１９の引張りで受けるなどして簡単且つ軽量化構造のもので精度の良い横送りネジ軸６６の支持を可能とさせることができる。
【００２８】
また、サイドマーカ７６を起立保持させるマーカ収納フック１３４を軸受板１１７に設けることによって、例えば棒状形状のフック１３４を軸受板１１７に固設するだけの簡単な構造のもので、軸受板１１７も収納時のガイドとして利用してサイドマーカ７６の確実な起立収納保持を図ると共にマーカ収納機構のコスト低減や重量の軽減化を容易に可能とさせることができる。
【００２９】
図１３乃至図１５に示す如く、前記苗送りケース５９の下側面を曲面部５９ａに形成し、左サイドフロート３５が揺動で上げ動作したときのストッパとして利用すると共に、左サイドマーカ７６の最大収納時にサイドマーカ７６を係合保持するバネ鋼製のマーカ収納フック１３６を苗送りケース５９外側面に取外し自在にボルト１３７止め固定させている。
【００３０】
また、前記マーカ収納フック１３６は苗送りケース５９左外方に延出させて先端を平面視略三角形状に折曲げてサイドマーカ７６の係合部１３６ａに形成し、植付部１５最上げ時のサイドマーカ７６位置より機体中心側に係合部１３６ａを配置させ、植付部１５最上げ時にマーカ収納フック１３６にサイドマーカ７６が引掛るのを防止させ、サイドマーカ７６とマーカ収納フック１３６の位置関係に差がある場合や植深変更によって支点軸６７が回動してマーカ７６収納姿勢が変化するときにもマーカ収納フック１３６の弛みでサイドマーカ７６を良好に係合保持させるように構成している。
【００３１】
また図３に示す如く、施肥機３６前面位置に配備させるユニットレバーボックス１３９に左右各２条用２本のユニットクラッチレバー１４０を設け、図２０に示す如く縦送りローラ軸１２７の両端側に設ける縦送りユニットクラッチ１４１と植付爪ユニットクラッチ５７と施肥機３６肥料繰出ケース３９の駆動の入切を行う施肥ユニットクラッチとに各クラッチワイヤを介しユニットクラッチレバー１４０を連結させて、左右何れか一方のユニットクラッチレバー１４０の切操作によって左或いは右側２条分の縦送りと植付爪１７及び施肥機３６の駆動を停止させるもので、図１３に示す如くユニットクラッチレバー１４０と縦送りユニットクラッチ１４１とを連結する縦送りクラッチワイヤ１４２の中間を前記マーカ収納フック１３６にクランプさせるように構成している。
【００３２】
図２０乃至図２２に示す如く、前記苗取量調節レバー９７に縦送り連動ワイヤ１４３を介し従動カム１２５を連結させ、苗取量の変化に対応させ苗縦送り量も変化させて、苗取量に応じた適正な苗縦送りを行うもので、調節レバー９７のレバーアーム１４４と従動カム１２５の外側面の突出ピン１４５間を連動ワイヤ１４３のインナワイヤ１４３ｂで、横フレーム４５及び苗載台１６裏面に固設するアウタ受け１４６・１４７間をアウタチューブ１４３ａで連結させている。そして、調節レバー９７側のインナワイヤ１４３ｂにおいてはアウタチューブ１４３ａを前方に位置させインナワイヤ１４３ｂを前方側に引き動作させることにより、泥水のアウタチューブ１４３ａ内への侵入を有効に防止すると共に、苗載台１６側のアウタ受け１４７は上部ローラ軸１２８を苗載台１６裏面に支持する軸受１４８の取付穴など取付部材１４９を利用して苗載台１６に固定させている。
【００３３】
図２２乃至図２６に示す如く、前記植深調節レバー７３の上端側を案内するレバーガイド１５０に多段の係合ノッチ１５１を有する調節板１５２をガイドレール１５３を介しスライド自在に設け、植深調節レバー７３をノッチ１５１を介し調節板１５２に係脱自在に連結させ、植付作業速度感応型植深さ自動調節用（速度同調）の植深補正モータ１５４にネジ軸１５５及びネジ係合体１５６を介し調節板１５２を連結させて、手動による植付深さの基準調節を行うと共に、走行速度の変化時には補正モータ１５４でもって植付深さの基準補正を行うように構成している。
【００３４】
また、前記レバーガイド１５０は機体中心より左側の横フレーム４５前面の固定ブラケット１５７にレバーガイド１５０の右折曲側板１５０ａをボルト１５８を介し取外し自在に固定させるもので、レバーガイド１５０の取付位置を変更させる複数のボルト取付孔１５９をレバーガイド１５０に形成して、密植（深植え）或いは疎植（浅植え）など基準植付深さ仕様が変更されたときには、対応した位置（図２４に示す如く、レバーガイド１５０が上取付位置のとき密植、下取付位置のとき疎植）にレバーガイド１５０の取付位置を変更させるように構成している。
【００３５】
また、レバーガイド１５０と調節板１５２との相対位置を変化させる調節板１５２位置規制用の正逆規制スイッチ１６０・１６１をレバーガイド１５０の裏面にビス１６２を介して取外し自在に固定させ、調節板１５２一側に折曲形成するスイッチ作用部１５２ａを規制スイッチ１６０・１６１のアクチュエータ１６０ａ・１６１ａ内に臨ませて、設定されるアクチュエータ１６０ａ・１６１ａ間の距離内で補正モータ１５４の正逆駆動制御を行うと共に、前記規制スイッチ１６０・１６１の取付位置を変更させる複数のビス取付孔１６３をレバーガイド１５０に形成して、密植或いは疎植など基準植付深さが変更されたときには、対応した位置（図２６に示す如く、規制スイッチ１６０・１６１が実線状態の上取付位置のとき密植、仮想線状態の下取付位置のとき疎植）に規制スイッチ１６０・１６１を変更させるように構成している。そしてこの場合レバーガイド１５０の取付位置の変更或いは規制スイッチ１６０・１６１の取付位置の変更の何れか一方を用いて植付深さの基準調節を行うものである。
【００３６】
上記からも明らかなように、苗の植付深さを調節する植深調節レバー７３を植付フレーム２０の横フレーム４５に備えた田植機において、横フレーム４５に対する植深調節レバー７３のレバーガイド１５０の取付位置を調節する複数の取付孔１５９を横フレーム４５或いはレバーガイド１５０に形成することによって、密植・疎植など基準植付深さ仕様の変更や、様々な地域或いはユーザーの要望で植付深さを変更させる場合、レバーガイド１５０の取付位置を容易に変更させて基準とする植付深さを変更させ、各種条件にあった最適な植深調節を可能とさせて、植付精度を向上させることができる。
【００３７】
また、苗の植付深さを調節する植深調節レバー７３をレバーガイド１５０を介し植付フレーム２０に備えた田植機において、レバーガイド１５０に対する植深調節レバー７３の操作位置を規制するレバー位置規制部材である規制スイッチ１６０・１６１を設けると共に、レバーガイド１５０に規制スイッチ１６０・１６１を位置変更自在に取付けることによって、例えば植付作業速度感応型（速度同調）自動植深モータに植深調節レバー７３を連結させた構造にあっては、植深調節レバー７３の位置規制する規制スイッチ１６０・１６１の取付位置を変更させるだけの簡単な操作によって、各種条件にあった最適な植深調節を容易に可能とさせることができる。
【００３８】
図１８、図１９、図２７、図２８に示す如く、前記下部レール１８に嵌合させて苗載台１６を支持する下部ガイドレールである苗取出板９０の断面形状は取口部直線とさせるもので、苗載台１６の底板１６ａの下端裏面に下部レール１８を固設させ、苗取出板９０は前記下部レール１８に摺動体１６５を介し嵌合させる４角嵌合部９０ａと、苗マット底面に摺接させる底板１６ａの延長方向に沿う苗底面受部９０ｂと、苗マット前面と摺接させる底板１６ａに対し略９０度立設傾斜させた苗前面受部９０ｃとを有し、底板１６ａと下部レール１８の合体部下縁１６６の下側位置より底板１６ａの延長線上の高さ位置に直線の上り傾斜に苗底面受部９０ｂを形成して、苗載台１６の横送り時に従来の如く苗取出板９０の苗取出口１６７で苗底面受部９０ｂに苗が引掛るなどの不都合を解消させ、苗取出板９０上でのスムーズな苗の横送りを行って正確な苗取出しを可能とさせると共に、苗載台底板１６ａの苗の縦送り方向に対し苗取出板９０の苗底面受部９０ｂを前低後高状の上り傾斜面に形成して、苗載台１６の横送り動作中苗マット下端部が浮上り状態となっても苗取出板９０の傾斜面（受部９０ｂ）によって、苗載台底板１６ａと苗マットとの隙間を開かず密着状態を良好に保って苗を確実に掻取り可能とさせるように構成している。
【００３９】
また、前記苗取出板９０の苗取出口１６７の裏側面にボルト１６８及び苗ガイド１６９を介し固設する苗取出板補強用の受刃１７０は苗取出板９０の嵌合部９０ａに取付ける連結部１７０ａと、苗取出口１６７を中心とした苗取出板９０の左右両側に取付ける左右受板部１７０ｂと、連結部１７０ａと受板部１７０ｂ間で連結して苗ガイド１６９に苗を案内するガイド部１７０ｃとを有する平面視コノ字形の一体構造に設け、苗取出板９０の苗取出口１６７の強度を向上させ、苗植付爪１７による苗取量を安定させるように構成している。
【００４０】
また図２９に示す如く、前記苗送りケース５９と植付駆動軸５１とカム軸６５との連結接続時にあっては、前記苗送りケース５９の内側面に形成する植付用スリット１７１及び縦送り用スリット１７２と、駆動軸５１及び苗送り軸５８（カム軸６５）に形成するボンチマーク１７３・１７４とを合せて、密植仕様及び疎植仕様に対応させた苗送りケース５９と軸５１・５８の容易な組付けを可能とさせるように構成している。
【００４１】
図３０乃至図３６に示す如く、前記サイドフロート３５は平面視門形に形成し、内側の後方延出部１７５より外側の後方延出部１７６の前後長を短く形成し、車輪である後輪８位置後方のフロート内側後方延出部１７５の左右幅Ｗ１を後輪８の左右幅Ｗ３と略同一若しくは幅広（Ｗ１≧Ｗ３）に形成すると共に、フロート外側後方延出部１７６の左右幅Ｗ２をフロート内側後方延出部１７５の左右幅Ｗ１より幅狭（Ｗ１＞Ｗ２）に形成して、既植苗に対するサイドフロート３５の影響を小とさせた良好な回り植えを可能とさせると共に、隣接苗への泥押しを最小限に抑えながら車輪８跡を確実に消す植付作業を可能とさせて植付精度を安定維持させるように構成している。
【００４２】
また、フロート内側後方延出部１７５上方に植付フレーム２０の縦フレーム４４ａ・４４ｂを配置させ、該延出部１７５の左右両側で苗植付爪１７による２条分の苗植えを行わせ、ロータリケース２１の回転軌跡の最後側部より延出部１７５を後方に突出させて、ロータリケース２１の低コストによる保護を図ると共に、圃場条件に応じてフロート外側後方延出部１７６前方位置に補助車輪３７を設ける場合には、該車輪３７の車輪跡も延出部１７６で消すように構成している。
【００４３】
また図３５にも示す如く、後輪８に対応するサイドフロート３５の前面位置を凹部１７７に形成して、後輪８とサイドフロート３５の隙間を確保しつつ、サイドフロート３５を可及的に前方に配置することができ、その結果植付部１５を可及的に本機に近づけることができるため、機体全長の縮小化を容易に可能とさせると共に、水の流れＭを隣接苗でなく後輪跡に流し込ませて、隣接苗への影響を小とさせ整地性を向上させるように構成している。
【００４４】
また図３０、図３１にも示す如く、フロート外側後方延出部１７６の後端上面に固設するブラケット６９と、支点軸６７に基端を固設する調節リンク７１との間に、サイドフロート３５の先端側に上げ荷重を作用させる捩りコイルバネ１７８を介設させるもので、ブラケット６９と調節リンク７１とを連結する枢支軸１７９周りに前記コイルバネ１７８を設け、ブラケット６９に開成する低及び高荷重用２つのバネ係合孔１８０・１８１の何れか一方にコイルバネ１７８の一端側フック１７８ａを係合させると共に、調節リンク７１にコイルバネ１７８の他端側フック１７８ｂを係合させて、係合孔１８０・１８１に対するコイルバネ１７８のフック１７８ａの掛け替えでサイドフロート３５先端側の上げ荷重を容易に変更するように構成している。
【００４５】
図３１に示す如く、前記枢支軸１７９に取付けるコイルバネ１７８のフック１７８ａとコイル部１７８ｃ側端までの距離ａよりバネ７８を挿入する枢支軸１７９の首下長さｂを大（ａ＜ｂ）に形成して、バネ係合孔１８０・１８１に対しバネフック１７８ａの掛け替えを容易とさせるように構成している。つまり枢支軸１７９に取付けるバネ座金１７８ｄと植付深さ調節リンク７１間の取付長さｂを、コイルバネ１７８のコイル部１７８ｃの幅長さとフック１７８ａの幅長さの加算値ａより大に形成して、フック１７８ａの係合解除時には植付深さ調節リンク７１とフック１７８ａとの間に隙間を形成させる状態とさせて掛け替えを容易とさせるように構成している。
【００４６】
上記からも明らかなように、植付部１５の下方に支点軸６７を介し上下揺動自在にサイドフロート３５を支持させた田植機において、サイドフロート３５先端側に上げ荷重を作用させる上げ荷重変更部材である捩りコイルバネ１７８を設けると共に、コイルバネ１７８のバネ力を調節自在に設けることによって、長さの異なるサイドフロート３５に変更或いは施肥機３６やレベラの装着・非装着或いは圃場条件による泥押しの具合などに応じてサイドフロート３５の上げ荷重を変更する必要のあるときには、従来の如くバネをその都度取換えるなどの煩わしさなくコイルバネ１７８のバネ力の調節操作によるバネ力の変更で容易に対応させて、サイドフロート３５上げ荷重変更時に必要とする操作性の向上やコスト低減を図ることができる。
【００４７】
また、サイドフロート３５とフロート支持部材である調節リンク７１間に介設するコイルバネ１７８のバネ取付位置を調節自在に設けることによって、サイドフロート３５の上げ荷重を変更する必要のあるときには、その都度バネを取換える必要なく、バネ１７８を掛け替えるなどの簡単な調節操作で対応させて、操作性の向上やコスト低減を図って植付精度を向上させることができる。
【００４８】
また、サイドフロート３５と調節リンク７１間の枢支軸１７９周りに捩りコイルバネ１７８を介設すると共に、コイルバネ１７８掛け替え用のスペースを枢支軸１７９に設けて、例えばサイドフロート３５の固定ブラケット６９に対するコイルバネ１７８一側の掛け替え時には、コイルバネ１７８を枢支軸１７９のスペース内で自在に移動させてバネの掛け替えを容易に行って、サイドフロート３５の上げ荷重を適正維持させることができる。
【００４９】
図３０、図３３にも示す如く、前記縦フレーム４４ａ・４４ｂ後端側でロータリケース２１など支持させるフランジ１８２にＵ字形状のパイプ製フロートストッパ１８３を固定させて、ロータリケース２１回転中のサイドフロート３５との干渉を有効に防止するように構成している。また図６、図３１にも示す如く、左右サイドフレーム１３５のブラケットは立上り部６９ａを機体内側に向け配置させ、該立上り部６９ａに取付ける枢支軸１７９を機体内側に突出させて、コイルバネ１７８を調節リンク７１より内側に配置させて、支点軸６７両端の空きスペースを大きくしてサイドマーカ７６の取付スペースなどを充分に確保するように構成している。
【００５０】
図１４、図１５、図１８、図３０、図３２に示す如く、前記苗取出板９０の左右両端と左右サイドバンパ７４を機体内側に折畳み自在に設けるもので、苗載台１６より外側に突出する略長さ分の苗取出板９０の左右両端を分割させて分割体１８４に形成し、苗取出板９０本体側に摺動体１８５・回動軸１８６・連結板１８７、係合体１８８・姿勢保持バネ１８９などを介し分割体１８４を折畳み自在に連結させている。
【００５１】
また前記サイドバンパ７４は支点軸６７の両端に固設する側面視コ形状の取付部材７５にバンパ折曲垂直部７４ａを上下動自在に挿通させ、取付部材７５より下方に突出させる垂直部７４ａのバネ座１９０と取付部材７５間に圧縮バネ１９１を介設させると共に、取付部材７５の外端面及び前面に当接させて位置規制するＬ形状の位置規制板１９２を垂直部７４ａに固定させ、規制板１９２と取付部材７５前面との当接位置ではバンパ水平部７４ｂを支点軸６７の延長方向に突出状態とさせて苗取出板９０などを保護する一方、圧縮バネ１９１に抗しサイドバンパ７４を上方に引上げ後方に水平部７４ｂを略９０度回動させ、規制板１９２と取付部材７５外端面とを当接させるバンパ収納位置のとき機体巾を縮小させて運搬車への積込みや格納を容易に可能とさせるように構成している。
【００５２】
図３８に示す如く、左右サイドバンパ７４の水平部７４ｂの端部７４ｃは前方から後方に折曲げる形状として、運転席１３位置から端部７４ｃの長さ方向でサイドバンパ７４の開放状態を容易に確認可能とさせて視認性を向上させると共に、障害物に当たっても引掛るなどの不都合を解消させるように構成している。
【００５３】
また、前記サイドバンパ７４と苗取出板９０の分割体１８４の折畳み収納時にあっては、側面視で分割体１８４の外側でサイドバンパ７４をラップさせて分割体１８４が外方に開くのをサイドバンパ７４の端部７４ｃで防いで、分割体１８４が干渉するなどの事故を防止し折畳み時にもサイドバンパ７４で分割体１８４を保護するように構成している。さらに左右サイドバンパ７４は下方からの突き上げに対しても、圧縮バネ１９１に抗する上動によって破損などが防止される。
【００５４】
図３３、図３５に示す如く、前記作溝器４０はセンタフロート３４の左右両側に２つ、左右サイドフロート３４に各１つ配置されるもので、左右サイドフロート３４にあってはフロート外側後方延出部１７６の内側基部に作溝器取付部１９３を設け、作溝器４０に接続させる搬送ホース４１と苗載台１６との間を縮小させた良好な配置を行うように構成している。
【００５５】
図１９に示す如く、前記縦フレーム４４ａ・４４ｂの前部上方にホース取付ステー１９４を固定させ、該ステー１９４に取付けるクランプ金具１９５に作溝器４０のブーツ４０ａ上方近傍の搬送ホース４１を固定支持させると共に、横フレーム４５・苗送り軸５８・縦送りカム１２４より後方で苗載台１６・苗取量調節軸９６の前方に搬送ホース４１を通して、搬送ホース４１の屈曲を小さく抑えて肥料の詰まりなどを防止するように構成している。
【００５６】
そして図３７に示す如く、前記従動カム１２５と滑り子受け１２３の横移動範囲より外側に搬送ホース４１を配置させて、搬送ホース４１と苗載台１６間の距離を縮小させると共に、図１２に示す如くローリングシリンダ１０６のギヤポンプ１０９・モータ１１０など油圧ユニット下部に搬送ホース４１を通して、搬送ホース４１のスペースを有効に確保した搬送ホース４１の組込みを行うと共に、図５、図６に示す如く苗送りケース５９と苗取量調節軸９６の隙間１００に搬送ホース４１を通して、別途ホース取付部材などの必要のない搬送ホース４１の低コストで軽量良好な保持を行うように構成している。
【００５７】
また、図３７に示す如く搬送ホース４１の中間部にあっては、前記ヒッチブラケット２４の左右両側に左右ホースガイド１９６を配置させ、左右ホースガイド１９６の左右両端に搬送ホース４１のクランプ金具１９７を取付けて、搬送ホース４１とヒッチブラケット２４を側面視でラップさせることによって、本機と苗載台１６間の距離を縮めて機体全長の縮小化を図るように構成している。
【００５８】
【発明の効果】
以上実施例から明らかなように、請求項１に係る発明は、苗載台１６を左右方向に横送りする横送り軸としての横送りネジ軸６６を備え、走行車１にリンク機構２７を介して連結するための植付フレーム２０の横フレーム４５と、前記横送りネジ軸６６とを略平行に配置してなる田植機において、前記横フレーム４５の一側端部には苗送りケース５９を固設し、前記横フレーム４５の他側端部のフランジ部１１８には、複数の軸状部材としてのパイプ１１９を、前記横送りネジ軸６６と略平行に取付けるように、機外側に向けて突設し、前記軸状部材１１９の先端側には、前記横送りネジ軸６６の軸受１２０を配置するための軸受部材としての軸受板１１７を設けたものであるから、横送りネジ軸６６の一側を複数の軸状部材１１９で堅固に支持して、横送りネジ軸６６を簡単に支持できるものである。
【００５９】
また、請求項２に係る発明は、サイドマーカ７６を起立させて保持するためのマーカ収納フック１３４を、前記軸受部材１１７に設けたものであるから、軸受部材１１７にサイドマーカ７６の収納ガイドの機能をもたせて、サイドマーカ７６の確実な起立収納保持を図ると共に、マーカ収納機構のコスト低減や重量の軽減化を容易にできるものである。
【図面の簡単な説明】
【図１】田植機の全体側面図である。
【図２】田植機の全体平面図である。
【図３】植付部の側面図である。
【図４】植付部の側面説明図である。
【図５】植付部の平面図である。
【図６】植付部の平面説明図である。
【図７】植付部の側面説明図である。
【図８】昇降リンク機構の側面である図。
【図９】昇降リンク機構の平面図である。
【図１０】植付フレーム部の断面説明図である。
【図１１】苗載台の正面説明図である。
【図１２】ヒッチブラケット部の正面説明図である。
【図１３】苗送りケース部の側面図である。
【図１４】サイドマーカ部の背面説明図である。
【図１５】サイドマーカ部の平面説明図である。
【図１６】サイドマーカ部の斜視説明図である。
【図１７】軸受板部の側面説明図である。
【図１８】苗取量調節軸部の平面説明図である。
【図１９】苗縦送り部の側面説明図である。
【図２０】苗載台の背面説明図である。
【図２１】従動カム部の側面説明図である。
【図２２】植深調節部の側面図である。
【図２３】植深調節部の平面図である。
【図２４】植深モータ部の説明図である。
【図２５】植深調節板の説明図である。
【図２６】スイッチ部の説明図である。
【図２７】苗取出板部の側面説明図である。
【図２８】受け刃部の斜視説明図である。
【図２９】苗送りケース部の内側面である図。
【図３０】サイドバンパ部の側面説明図である。
【図３１】サイドフロート枢支部の説明図である。
【図３２】苗取出板の折畳み説明図である。
【図３３】フロート部の平面図である。
【図３４】フロートの平面説明図である。
【図３５】サイドフロート部の平面説明図である。
【図３６】サイドフロートの底面説明図である。
【図３７】搬送ホース部の説明図である。
【図３８】サイドバンパ及び苗取出板分割体の折畳み説明図である。
【符号の説明】
１走行車
１６苗載台
２０植付フレーム
２７リンク機構
４５横フレーム
５９苗送りケース
６６横送りネジ軸（横送り軸）
７６サイドマーカ
１１７軸受板（軸受部材）
１１８フランジ部
１１９パイプ（軸条部材）
１２０軸受
１３４フック[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a rice transplanter that is provided with a seedling stage, a seedling planting claw, and the like and continuously performs seedling planting work.
[0002]
[Problems to be solved by the invention]
  For example, in Japanese Patent Application No. 2001-66602, there is a structure in which an outer end side of a lateral feed screw shaft is supported via a bearing plate on an L-shaped support stay that protrudes to the right outside of the horizontal frame. The bearing plate and the screw shaft to be attached to each other are orthogonal to each other, and when the seedling table is laterally fed, the support stay and the bearing plate are deformed by applying the lateral force of the screw shaft to the support stay and the bearing plate. There was a fear. In addition, since the screw shaft is supported by the support stay in a cantilever structure, it is necessary to ensure sufficient strength to perform support with excellent lateral feed accuracy, resulting in an increase in weight and cost.
[0003]
[Means for Solving the Problems]
  The invention according to claim 1 includes a lateral feed shaft that laterally feeds the seedling platform in the left-right direction,A horizontal frame of a planting frame for connecting to a traveling vehicle via a link mechanism and the horizontal feed shaft are arranged substantially in parallel.In rice transplanter,A seedling feeding case is fixed to one side end of the horizontal frame, and a plurality of shaft-like members are attached to the flange portion of the other side end of the horizontal frame substantially parallel to the horizontal feeding shaft. Since it projects toward the outside of the machine, a bearing member for arranging the bearing of the transverse feed shaft is provided on the tip side of the shaft-shaped member.Multiple shaft-like members on one side of the transverse feed shaftsoFirmly supporting the transverse feed shaftsimplyIt can be supported.
[0004]
  The invention according to claim 2SStand up id markerLet meRetentionin order toMarker storage hookSaidSince it is provided on the bearing member,sideMarkerStorageGive the guide function,sideEasily reduce the cost and weight of the marker storage mechanism while ensuring that the marker is stood and storedInIt is possible.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view thereof. In FIG. 1, reference numeral 1 denotes a traveling vehicle on which an operator is boarded. The front paddy field traveling wheel 6 is supported in front of the case 4 via the front axle case 5 and the rear axle case 7 at the rear of the transmission case 4 is supported by the rear wheel case 8 for paddy field traveling. The spare seedling platforms 10 are attached to both sides of the bonnet 9 covering the engine 2 and the like, and the mission case 4 and the like are covered by the vehicle body cover 11 on which an operator gets on, and the vehicle is operated on the upper surface of the cab 12 on the rear side of the vehicle body cover 11. A seat 13 is attached, and a steering handle 14 is provided at the rear of the bonnet 9 in front of the driver seat 13.
[0006]
  In the figure, reference numeral 15 denotes a planting part having a seedling mounting table 16 for four-row planting and a plurality of seedling planting claws 17, and the like. The planting frame 20 is supported by the planting frame 20 through the lower rail 18 and the upper guide rail 19 so as to be slidable in the left-right direction, and a rotary case 21 that rotates at a constant speed in one direction is supported by the planting frame 20.RotaryA pair of claw cases 22 and 22 are arranged at symmetrical positions around the rotation axis of the case 21, and seedling planting claws 17 and 17 are attached to the tips of the claw cases 22 and 22. Further, left and right side frames 23 and 23 are erected on both the left and right ends of the planting frame 20 to support the seedling mounting table 16, and a hitch bracket 24 at the center of the planting frame 20 includes a top link 25 and a lower link 26. The hydraulic lift cylinder 28 provided in the traveling vehicle 1 is connected to the lower link 26 by being connected to the traveling vehicle 1 via the lifting link mechanism 27, and when the lifting cylinder 28 is driven.ElevatingThe planting part 15 is moved up and down through the link mechanism 27, and when the planting part 15 is lowered, one seedling is taken out by the planting claw 17 from the seedling mount 16 that is reciprocated to the left and right. Configure to do work.
[0007]
  In the figure, 29 is a main speed change lever, 30 is a seedling lever that enables operations such as travel stop at the position where the aircraft is lowered as well as the boarding position, 31 is a planting lift lever, and 32 is a main clutch. Pedals 33 and 33 are left and right brake pedals, 34 is a center float for leveling two strips, 35 is a side float for leveling one strip, 36 is a side strip fertilizer for four strips, 37 and 37 are rear wheel 8 Auxiliary wheels to be deployed on the outside.
[0008]
  The fertilizer for side strip 36 includes a fertilizer hopper 38 for feeding fertilizer, a fertilizer feed case 39 that is a fertilizer feed section for supplying fertilizer, and a flexible transport hose 41 to the side strip groover 40 of the floats 34 and 35. A blower 42 for discharging fertilizer and a cylindrical air tank 43 and a blower 42 are attached to the right end of the air tank 43, and four sets of four fertilizer feeding cases 39 are disposed above the air tank 43. The upper end of the seedling stage 16 is arranged close to the rear side of the fertilizer hopper 38.
[0009]
  As shown in FIG. 3 to FIG. 12, the planting frame 20 includes left and right vertical frames 44a and 44b made of two pipes and a horizontal frame 45 made of pipe that connects the front ends of the left and right vertical frames 44a and 44b. And a cruciform frame joint (cross pipe joint) 46 formed by bulging is welded and fixed to the rear ends of the vertical frames 44a and 44b, and the rotary case 21 is rotatably supported by the joint 46 via a rotary shaft 47. The left and right cruciform frame joints (cross pipe joints) 48a and 48b formed by bulging are welded and fixed to the vertical frames 44a and 44b and the horizontal frame 45, and the vertical and horizontal frames 44a, 44b and 45 are integrally connected. The lightweight planting frame 20 is formed at a low cost.
[0010]
  In addition, a planting input shaft 49 is provided at the front end of the right frame joint 48b, and the driving force from the PTO shaft of the transmission case 4 is transmitted to the input shaft 49 via the universal joint shaft 50 and installed in the horizontal frame 45. The input shaft 49 is linked to the planting drive shaft 51 via bevel gears 49 a and 52, and the planting claw drive shaft 53 provided in the left and right vertical frames 44 a and 44 b is planted via the bevel gears 52 and 54 and the safety clutch 55. The seedling planting claw 17 is driven by being coupled to the drive shaft 51 and interlockingly coupled with the rotating shaft 47 via the bevel gears 56a and 56b and the planting claw unit clutch 57. ing.
[0011]
  Further, a seedling feed shaft 58 for laterally feeding the seedling stage 16 in the horizontal direction and vertical feeding of the seedlings on the seedling stage 16 is linked to the left end of the planting drive shaft 51 through a seedling feeding case 59 made of aluminum die cast. The one end side flange portion 61 of the seedling feeding case 59 is bolted and fixed to the left flange portion 60 of the left frame joint 48a, and the left end of the seedling feeding shaft 58 is inserted and supported on the other end side of the case 59.Seedling feedingA speed change mechanism 64 formed by two sets of switching gears 62 and 63 for high and low speed changes is interposed between the drive shaft 51 and the seedling feed shaft 58 in the case 59, and the left half of the seedling feed shaft 58 is seeded with respect to the substantial center of the machine body. Vertical feed camshaft 65Of the seedling feed shaft 58 with respect to the center of the machine body.The right half is the seedling horizontal feed screw shaft 66AsIt is configured to perform lateral feed of the seedling stage 16 and vertical feed of the seedlings on the seedling stage 16 when the seedling feed shaft 58 is rotated at high and low speeds.
[0012]
  30 and 33, a planting depth adjustment fulcrum shaft 67 is pivotally supported on the lower side of the front end of the planting frame 20, and brackets 68 and 69 on the upper surfaces of the rear ends of the floats 34 and 35 are provided. Is connected to the fulcrum shaft 67 through the planting depth adjustment links 70 and 71, and a change in the float inclination angle (planting depth) is detected by the elevating link 72 coupled to the front end of the center float 34, and the fulcrum A reference planting depth is adjusted by a planting depth adjusting lever 73 having a base end fixed to the shaft 67.
[0013]
  In addition, L-shaped left and right side bumpers 74 are provided on the left and right ends of the fulcrum shaft 67 so as to be foldable outwardly via a bumper mounting member 75.
[0014]
  As shown in FIGS. 13 to 16, the base end of the left and right side markers 76 is supported in the vicinity of both left and right ends of the fulcrum shaft 67 so that it can be folded (raised). ofsideThe bent portion 76a at the base end of the marker 76 is rotatably supported,sideBetween the marker arm 78 fixed to the base end of the marker 76 and the bumper mounting member 75, a torsion coil spring type marker fall spring 79 is interposed,sideAn erection wire 80 for erecting the marker 76 is connected to the marker arm 78;sideEngage with the engaging shaft 81 of the marker arm 78 during the standing operation of the marker 76sideA hook 82 for standing and holding the marker 76 is rotatably provided on the fulcrum shaft 67 via a pin 83, and a release wire 85 for releasing the engagement of the hook 82 that stands and holds the marker 76 against the force of the hook spring 84 is provided on the hook 82. Between the planting elevating lever 31 and pulling the standing wire 80 in conjunction with the ascending operation of the planting part 15sideThe marker 76 is erected and engaged with the hook 82, and the right and left hooks 82 are disengaged by the planting lifting / lowering lever 31 and left or rightsideThe marker 76 is configured to fall down in the lateral direction.
[0015]
  As shown in FIGS. 8, 9, 14, and 15, the rear frame 86 of the vehicle body frame 3 is connected to the left and right sides via wire receivers 87.sideOne end of the two standing wires 80 for the marker 76 is connected to the left and right marker arms 78 at the other end of the standing wire 80, and the universal joint shaft 50 is placed on the right side with the lower link 26 arranged on the machine body center line as the center. Left and rightsideMarker76The two standing wires 80 are disposed, and an outer receiver 88 on one end side of the outer tube 80a of the standing wire 80 is fixed to the rear left outer side of the lower link 26 and an outer receiver on the other end side of the outer tube 80a. 89 is fixed to the fulcrum shaft 67, the wire receiver 87 and the marker arm 78 are connected by the inner wire 80 b of the upright wire 80, and the right and left are interlocked with the raising of the planting part 15.sideThe marker 76 is configured to stand up.
[0016]
  As is clear from the above, in the rice transplanter that folds the left and right side markers 76 via the standing wire 80 that is a marker wire in conjunction with the ascent of the planting unit 15, the planting unit 15 is located on the left and right sides with respect to the center of the machine body. Without worrying about the use of a clamp or the like that avoids contact with the universal joint shaft 50 by disposing the wire 80 on the other side of the universal joint shaft 50 that is a planting transmission shaft for inputting a driving force. The joint shaft 50 and the wire 80 are reliably prevented from being wound to stably maintain the operation of the joint shaft 50 and the wire 80, and the right and left weight balance between the joint shaft 50 and the wire 80 is improved so that the airframe is stably maintained. Can be planned.
[0017]
  Further, by arranging the outer tube 80a, which is the outer member of the standing wire 80, on the lower link 26 and the inner wire 80b on the vehicle body frame 3, respectively, the inner wire 80b and the outer tube 80a are attached to the conventional lower link 26 and the planting hitch. Compared to the structure in which the air conditioner is disposed, it can be arranged in a concise manner in the front-rear direction on the outer side of the machine body to facilitate assembly and adjustment, and reduce operation loss.
[0018]
  Further, by arranging the standing wire 80 at a position near the side of the lower link 26, the standing wire 80 is stretched or slackened when the planting portion 15 is lifted and lowered without being affected by the lifting link mechanism 27. With a simple arrangement of upright wires 80.sideThe reliability of the marker 76 can be improved by enabling a reliable standing operation.
[0019]
  Further, in this case, the upright wire 80 is disposed on the side of the lower link 26 at substantially the same height as the lower link 26,sideThe pulling stroke of the marker 76 is sufficiently secured, and the two upright wires 80 are integrally supported by the single outer receiver 88, so that the wire 80 does not interfere with other parts, the wire life is good, the cost is low, and the weight is low. It is possible to arrange.
[0020]
  As shown in FIGS. 18 and 19, a seedling adjustment plate 91 that adjusts the amount of seedling by moving the seedling extraction plate 90 at the lower end of the seedling mount 16 up and down is provided on the guide member 92 of the planting frame 20 as a guide rod 93. An engagement plate 95 is provided on the upper part of the guide rod 93 and engaged with the groove 94 on the guide rod 93. The engagement plate 95 is provided on the seedling adjustment shaft 96 in the left-right direction, and is connected to the left end side of the seedling adjustment shaft 96. The amount of seedlings for one strain taken out by the seedling planting claw 17 is adjusted by operating the seedling amount adjusting lever 97. The seedlings are attached to the bearing plates fixed to the seedling feeding case 59 and the vertical frames 44a and 44b. The horizontal shaft portion 96a of the amount adjusting shaft 96 is rotatably supported, and the left end side of the horizontal shaft portion 96a is bent forward by approximately 90 degrees outward from the seedling feeding case 59 to form a vertical axis portion 96b in the front-rear direction. The front end of the vertical axis portion 96b is formed inward in front of the seedling feeding case 59. By bending at 0 °, to form a lever mounting portion 96c, the adjusting lever 97 proximal of L shaped attachment portion 96c is fixed by two bolts 98,Adjusting seedling amountThe tip of the lever 97 is extended obliquely above the front of the lever guide 99 and is provided so as to face between the left rear wheel 8 and the auxiliary wheel 37, and the seedling feeding case 59 is surrounded and protected by the respective parts 96a, 96b and 96c. ,Seedling feedingThe conveyance hose 41 is positioned in the gap 100 between the case 59 and the seedling collection amount adjusting shaft 96.
[0021]
  As shown in FIGS. 11 and 12, the hitch bracket 24 has upper and lower link shafts 101 and 102 for connecting the top link 25 and the lower link 26, and is held by welding at the approximate center of the horizontal frame 45 of the planting frame 20. A fulcrum member 103 to be fixed is rotatably connected to a lower end of the bracket 24 via a rolling fulcrum shaft 104, and a hydraulic rolling cylinder 106 is attached to a mounting seat 105 at the upper end of the bracket 24.rollingThe tip of the piston rod 107 of the cylinder 106 is connected to the fixed bracket 108 at the upper end of the right side frame 23, so that the double-acting typerollingA gear pump 109 that reciprocates the cylinder 106, a reversible electric motor 110 that drives the pump 109 forward and reverse, and an oil tank 111 are provided.rollingA rolling correction spring 113 is provided between the receiving plate 112 provided integrally with the cylinder 106 and fixed to the upper surface of the mounting seat 105 and the left and right ends of the upper guide rail 19 on the back side of the seedling table 16 so that the left side of the hitch bracket 24 When the pendulum type rolling sensor 114 provided on the horizontal frame 45 detects the inclination of the planting part 15,rollingThe piston rod 107 of the cylinder 106 is controlled to advance and retract.rollingThe planting part 15 is swung left and right around the fulcrum shaft 104 so that the planting part 15 can be held horizontally.
[0022]
  Also, a bracket 115 to be welded and fixed to the horizontal frame 45 and the right end of the fulcrum member 103 is provided.ofThe space is reinforced and connected with an oblique stay 116, and the rigidity of the right side frame 23 is improved with the lightest structure so as to ensure the rolling performance.
[0023]
  As shown in FIGS. 10, 12, 16, and 17, the middle and right ends of the seedling feed shaft 58 are supported by the horizontal frame 45 via the bracket 115 and the bearing plate 117, and the right side of the right frame joint 48b. Two pipes 119 substantially parallel to the seedling feed shaft 58 are extended to the right outside of the flange portion 118, and a bearing plate 117 is attached to the extended end of the pipe 119, and the bracket 115 and the bearing plate 117 are attached.WhenThe transverse feed screw shaft 66 via the bearing 120Both ends ofAnd the right end of the longitudinal feed cam shaft 65 is connected to the left end of the screw shaft 66 through a joint 121 made of square pipe.Vertical feedThe left end of the cam shaft 65 is connected to and supported by the seedling feed case 59, and the vertical feed cam shaft 65 and the left and right divided cam shaft 65 andHorizontal feedThe screw shaft 66 has a double-sided structure to improve the support strength, and the right end of the vertical feed cam shaft 65 is the same axis.Horizontal feedIt is configured to be connected to the screw shaft 66 to improve the longitudinal feed accuracy. SaidVertical feedThe camshaft 65 is an iron hollow pipe,Horizontal feedThe screw shaft 66 is made of solid iron material,AlsoOn the left side is the seedling feeding case 59 andVertical feedCam shaft 65Place,Than the aircraft centerHeavy on the rightHorizontal feedDistribute and arrange the screw shaft 66,Of planting part 15Left and rightweightThe balance is set to be good.
[0024]
  In addition, as shown in FIGS.Horizontal feedA slider 122 is screwed to the screw shaft 66, and the slider is connected to the seedling stage 16 via a slider receiver 123.122AndHorizontal feedWhen the screw shaft 66 is rotated in one direction, the seedling stage 16 is reciprocated left and right, and the vertical feed cam shaft 65 has a left and right vertical feed cam 124 so that the seedling stage 16 moves to the left and right moving end. The longitudinal feed cam 124 is brought into contact with the driven cam 125, and the longitudinal feed roller shaft 127 is rotated in one direction via the one-way clutch 126, whereby the longitudinal feed of the pair of upper and lower roller shafts 127 and 128 provided on the lower end side of the seedling stage 16 The vertical feed belt 131 wound between the rollers 129 and 130 is configured to move in the lower end direction by one seedling.
[0025]
  Further, as shown in FIGS. 16 and 17, the right flange portion 118 and the bearing plate 117 are formed with notches 132 and 133 for attaching the screw shaft at the upper portion,Horizontal feedA rod-shaped marker storage hook that allows easy attachment to the flange 118 and the bearing plate 117 with the bearing 120 mounted on the screw shaft 66 and that engages and holds the marker 76 when the right side marker 76 is fully stored. 134 is fixed to the upper side of the bearing plate 117 by welding.
[0026]
  Further, a part of the lower side of the right flange portion 118 is extended downward and formed on the raising stopper portion 135 of the right side float 35. Is configured to prevent interference.
[0027]
  As is clear from the above, in the rice transplanter provided with a lateral feed screw shaft 66 that is a lateral feed shaft for laterally feeding the seedling table 16 in the left-right direction, the planting frame 20 is substantially parallel to the lateral feed screw shaft 66. A plurality of pipes 119 that are shaft-shaped members are extended, and a bearing plate 117 that is a bearing member that supports one side of the transverse feed screw shaft 66 is attached to the pipe 119, whereby a plurality of sides of the transverse feed screw shaft 66 are provided. The pipe 119 is supported without being deformed, and the force of the lateral feed screw shaft 66 is received by pulling the pipe 119, so that it is possible to support the lateral feed screw shaft 66 with high accuracy with a simple and light weight structure. Can be made.
[0028]
  In addition, by providing the bearing storage 117 with the marker storage hook 134 that holds the side marker 76 upright, it has a simple structure in which, for example, a rod-shaped hook 134 is fixed to the bearing plate 117, and the bearing plate 117 is also stored. Use as a time guidesideThe marker 76 can be securely stood and held, and the marker storage mechanism can be easily reduced in cost and weight.
[0029]
  As shown in FIGS. 13 to 15, the lower surface of the seedling feeding case 59 is formed on the curved surface portion 59a, which is used as a stopper when the left side float 35 is moved up by swinging, and the maximum of the left side marker 76 is When storingsideA spring storage marker 136 made of spring steel for engaging and holding the marker 76Seedling feedingA bolt 137 is fixed to the outer surface of the case 59 so as to be freely removable.
[0030]
  Also, the aboveMarker storageThe hook 136 extends to the left outward of the seedling feeding case 59 and the tip is bent into a substantially triangular shape in plan view.sideIt is formed in the engaging part 136a of the marker 76, and when the planting part 15 is raised upsideWhen the engaging portion 136a is arranged closer to the center of the body than the marker 76 position,Marker storageOn hook 136sidePrevent the marker 76 from being caught,sideWith marker 76Marker storageEven when there is a difference in the positional relationship of the hook 136 or when the fulcrum shaft 67 is rotated by changing the planting depth and the posture of storing the marker 76 changesMarker storageThe slack of the hook 136sideThe marker 76 is configured to be engaged and held satisfactorily.
[0031]
  Further, as shown in FIG. 3, two unit clutch levers 140 for the left and right two strips are provided in the unit lever box 139 provided at the front position of the fertilizer applicator 36, and provided at both ends of the longitudinal feed roller shaft 127 as shown in FIG. The longitudinal feed unit clutch 141, the planting claw unit clutch 57, and the fertilizer application unit clutch for turning on and off the drive of the fertilizer feeding machine 36 fertilizer feeding case 39 are connected via respective clutch wires.unitBy connecting the clutch lever 140, either left or rightunitBy turning the clutch lever 140, the longitudinal feed of the left or right two strips and the driving of the planting claws 17 and the fertilizer application 36 are stopped, as shown in FIG.unitThe middle of the longitudinal feed clutch wire 142 that couples the clutch lever 140 and the longitudinal feed unit clutch 141 isMarker storageThe hook 136 is configured to be clamped.
[0032]
  As shown in FIG. 20 to FIG. 22, a follower cam 125 is connected to the seedling collection amount adjusting lever 97 via a vertical feed interlocking wire 143 to change the seedling vertical feed amount in response to the change in the seedling collection amount. The seedling vertical feed is performed in accordance with the amount, and between the lever arm 144 of the adjusting lever 97 and the projecting pin 145 on the outer surface of the driven cam 125, the inner wire 143b of the interlocking wire 143 is used for the horizontal frame 45 and the seedling mount 16. The outer receivers 146 and 147 fixed on the back surface are connected by an outer tube 143a. Then, in the inner wire 143b on the adjustment lever 97 side, the outer tube 143a is positioned forward and the inner wire 143b is pulled forward, thereby effectively preventing muddy water from entering the outer tube 143a and the seedling stage. The outer receiver 147 on the 16 side is fixed to the seedling table 16 by using an attachment member 149 such as a mounting hole of a bearing 148 that supports the upper roller shaft 128 on the back surface of the seedling table 16.
[0033]
  As shown in FIGS. 22 to 26, an adjustment plate 152 having a multistage engagement notch 151 is provided on a lever guide 150 for guiding the upper end side of the planting depth adjustment lever 73 so as to be slidable through a guide rail 153.Planting depthThe adjustment lever 73 is detachably connected to the adjustment plate 152 through a notch 151, and a screw shaft 155 and a screw engagement body 156 are connected to a planting depth correction motor 154 for planting speed sensitive type planting depth automatic adjustment (speed tuning). The adjustment plate 152 is connected to the base plate so that the reference adjustment of the planting depth is performed manually, and the reference correction of the planting depth is performed by the correction motor 154 when the traveling speed changes.
[0034]
  Further, the lever guide 150 is for fixing the right bent side plate 150a of the lever guide 150 to the fixing bracket 157 on the front side of the horizontal frame 45 on the left side from the center of the machine body through a bolt 158, and the mounting position of the lever guide 150 is changed. A plurality of bolt mounting holes 159leverWhen the reference planting depth specification such as dense planting (deep planting) or sparse planting (shallow planting) is changed in the guide 150, the lever guide 150 is in the upper mounting position as shown in FIG. The position of the lever guide 150 is changed at a time when the plant is densely planted and when the plant is in the lower mounting position.
[0035]
  Further, the adjustment plate 152 for restricting the position of the adjustment plate 152 for regulating the relative position between the lever guide 150 and the adjustment plate 152 is fixed to the back surface of the lever guide 150 through screws 162 so as to be detachable. The switch action part 152a that bends to one side of the 152RegulationThe corrector motor 154 is controlled in the forward / reverse direction within the set distance between the actuators 160a and 161a so as to face the actuators 160a and 161a of the switches 160 and 161, and the mounting position of the restriction switches 160 and 161 is changed. When a plurality of screw mounting holes 163 are formed in the lever guide 150 and the standard planting depth is changed, such as dense planting or sparse planting, the corresponding switches (as shown in FIG. 26, the restriction switches 160 and 161 are in a solid line state). The restriction switches 160 and 161 are changed so as to change to dense planting at the upper mounting position and sparse planting at the lower mounting position in the virtual line state. In this case, the reference adjustment of the planting depth is performed using either the change of the attachment position of the lever guide 150 or the change of the attachment position of the restriction switches 160 and 161.
[0036]
  As is clear from the above, in the rice transplanter provided with the planting depth adjusting lever 73 for adjusting the planting depth of the seedling in the lateral frame 45 of the planting frame 20, the lever guide of the planting depth adjusting lever 73 with respect to the lateral frame 45 A plurality of mounting holes 159 for adjusting the mounting position of 150 are formed in the horizontal frame 45 or the lever guide 150, so that the standard planting depth specification such as dense planting and sparse planting can be changed, or can be planted according to various regions or user requests. When changing the attachment depth, the mounting position of the lever guide 150 can be easily changed to change the reference planting depth, and the optimum planting depth adjustment according to various conditions can be made. Can be improved.
[0037]
  Further, in the rice transplanter provided with the planting depth adjusting lever 73 for adjusting the planting depth of the seedling in the planting frame 20 via the lever guide 150, the lever position for regulating the operation position of the planting depth adjusting lever 73 with respect to the lever guide 150. Regulating memberRegulationThe switches 160 and 161 are provided, and the lever guide 150RegulationFor example, in the structure in which the planting depth adjusting lever 73 is connected to a planting speed-sensitive (speed-synchronized) automatic planting motor by attaching the switches 160 and 161 so that the position of the planting depth adjusting lever 73 can be changed. Regulate positionRegulationBy a simple operation only by changing the mounting positions of the switches 160 and 161, it is possible to easily make the optimum planting depth adjustment suitable for various conditions.
[0038]
  As shown in FIGS. 18, 19, 27, and 28, the sectional shape of the seedling extraction plate 90, which is a lower guide rail that is fitted to the lower rail 18 and supports the seedling mounting table 16, is a straight line of the mouth portion. Therefore, a lower rail 18 is fixed to the bottom lower surface of the bottom plate 16a of the seedling mounting table 16, and a seedling extraction plate 90 is fitted to the lower rail 18 via a sliding body 165, and a seedling mat. The bottom plate 16a has a seedling bottom surface receiving portion 90b along the extending direction of the bottom plate 16a to be slidably contacted with the bottom surface, and a seedling front surface receiving portion 90c that is inclined substantially 90 degrees with respect to the bottom plate 16a to be slidably contacted with the front surface of the seedling mat. A bottom receiving portion 90b is formed in a straight upward slope at a height position on the extension line of the bottom plate 16a from the lower position of the lower edge 166 of the united portion of the lower rail 18 and when the seedling stage 16 is laterally fed as in the conventional case. Seedling bottom at seedling outlet 167 of seedling extraction plate 90 This eliminates the inconvenience such as the seedling being caught on the portion 90b, enables smooth seedling to be carried out by smoothly feeding the seedling on the seedling extraction plate 90, and enables vertical feeding of the seedling on the seedling mounting base plate 16a. Even if the seedling bottom receiving portion 90b of the seedling extraction plate 90 with respect to the direction is formed in an up-and-down inclined surface in front and back, the seedling mat lower end portion of the seedling mounting table 16 is lifted during the lateral feeding operation. The inclined surface (receiving portion 90b) of the take-out plate 90 is configured so that the seedling can be surely scraped while keeping a close contact state without opening a gap between the seedling mounting base plate 16a and the seedling mat.
[0039]
  Further, a receiving blade 170 for reinforcing a seedling extraction plate fixed to the back side surface of the seedling extraction outlet 167 of the seedling extraction plate 90 via a bolt 168 and a seedling guide 169 is a connecting portion that is attached to the fitting portion 90 a of the seedling extraction plate 90. 170a, left and right receiving plate portions 170b attached to the left and right sides of the seedling extraction plate 90 centering on the seedling extracting port 167, and a guide portion connected between the connecting portion 170a and the receiving plate portion 170b to guide the seedlings to the seedling guide 169 It is provided in an integrated structure having a conical shape in a plan view having 170c, so that the strength of the seedling outlet 167 of the seedling extraction plate 90 is improved, and the amount of seedling taken by the seedling planting claws 17 is stabilized.
[0040]
  29, when the seedling feeding case 59, the planting drive shaft 51, and the cam shaft 65 are connected and connected, the planting slit 171 and the vertical feeding formed on the inner surface of the seedling feeding case 59 are provided. The slit 172 for use in combination with the drive shaft 51 and the punch marks 173 and 174 formed on the seedling feed shaft 58 (cam shaft 65) is combined with the seedling feed case 59 and the shafts 51 and 58 corresponding to the dense planting specification and the loose planting specification. It is configured to allow easy assembly.
[0041]
  As shown in FIGS. 30 to 36, the side float 35 is formed in a plan view portal shape, the front and rear lengths of the rear extension 176 outside the inner rear extension 175 are made shorter, and the rear wheel is a wheel. The left and right width W1 of the float inner rear extension 175 at the rear of the eight positions is formed to be substantially the same as or wider (W1 ≧ W3) as the left and right width W3 of the rear wheel 8, and the left and right width W2 of the float outer rear extension 176 is It is formed narrower (W1> W2) than the left and right width W1 of the float inner rearward extending portion 175, and enables good rotation planting with a small influence of the side float 35 on the already planted seedling, and to adjacent seedlings. It is configured to enable the planting operation to reliably erase the traces of the wheels 8 while minimizing mud pushing, and to stably maintain the planting accuracy.
[0042]
  Further, the vertical frames 44a and 44b of the planting frame 20 are arranged above the float inner rear extending part 175, and two seedlings are planted by the seedling planting claws 17 on both the left and right sides of the extending part 175, The extension part 175 protrudes rearward from the rearmost part of the rotation locus of the rotary case 21 to protect the rotary case 21 at low cost, and assists the front position of the float outer rear extension part 176 according to the field conditions. When the wheel 37 is provided, the wheel mark of the wheel 37 is also erased by the extending portion 176.
[0043]
  Also, as shown in FIG. 35, the front surface position of the side float 35 corresponding to the rear wheel 8 is formed in the recess 177, while ensuring a gap between the rear wheel 8 and the side float 35,sideThe float 35 can be arranged as far forward as possible, and as a result, the planting part 15 can be brought as close to the machine as possible. The flow M is poured into the rear wheel traces instead of the adjacent seedlings, so that the influence on the adjacent seedlings is reduced and the leveling property is improved.
[0044]
  Further, as shown in FIGS. 30 and 31, the side float is provided between the bracket 69 fixed to the upper surface of the rear end of the float outer rear extension 176 and the adjustment link 71 fixed to the fulcrum shaft 67. 35, a torsion coil spring 178 for applying a lifting load is provided on the front end side of the coil 35. The coil spring 178 is provided around a pivot shaft 179 that connects the bracket 69 and the adjustment link 71. The one end side hook 178a of the coil spring 178 is engaged with either one of the two spring engaging holes 180, 181 for loading, and the other end side hook 178b of the coil spring 178 is engaged with the adjustment link 71, thereby engaging the engagement hole. By changing the hook 178a of the coil spring 178 to 180/181, the lifting load at the tip side of the side float 35 can be easily changed. There.
[0045]
  As shown in FIG. 31, the length under the neck b of the pivot shaft 179 into which the spring 78 is inserted is larger (a <b) than the distance a between the hook 178a of the coil spring 178 attached to the pivot shaft 179 and the coil portion 178c side end. ) So that the spring hooks 178a can be easily exchanged with respect to the spring engagement holes 180 and 181. That is, the attachment length b between the spring washer 178d attached to the pivot shaft 179 and the planting depth adjusting link 71 is formed larger than the added value a of the width length of the coil portion 178c of the coil spring 178 and the width length of the hook 178a. Thus, when the hook 178a is disengaged, a gap is formed between the planting depth adjustment link 71 and the hook 178a to facilitate replacement.
[0046]
  As is clear from the above, it can swing up and down via the fulcrum shaft 67 below the planting portion 15.sideIn the rice transplanter that supported the float 35,sideA torsion coil spring 178 which is a lifting load changing member for applying a lifting load to the tip side of the float 35 is provided, and the spring force of the coil spring 178 is provided to be adjustable so that the lengths are different.sideChange to float 35, or depending on the condition of mud pushing depending on the field conditions, with or without fertilizer application 36 or levelersideWhen it is necessary to change the lifting load of the float 35, it can be easily handled by changing the spring force by adjusting the spring force of the coil spring 178 without the trouble of replacing the spring each time as in the prior art.sideIt is possible to improve the operability and reduce the cost required when changing the float 35 raising load.
[0047]
  Also,sideBy providing the spring mounting position of the coil spring 178 interposed between the float 35 and the adjustment link 71 which is a float support member in an adjustable manner,sideWhen it is necessary to change the lifting load of the float 35, it is not necessary to change the spring each time. Instead, it can be handled by a simple adjustment operation such as changing the spring 178 to improve operability and reduce costs. Accuracy can be improved.
[0048]
  Also,sideA torsion coil spring 178 is provided around a pivot shaft 179 between the float 35 and the adjustment link 71, and a space for replacing the coil spring 178 is provided in the pivot shaft 179.sideWhen the one side of the coil spring 178 is replaced with the fixed bracket 69 of the float 35, the coil spring 178 can be freely moved in the space of the pivot shaft 179 to easily change the spring.sideThe lift load of the float 35 can be maintained appropriately.
[0049]
  As shown in FIGS. 30 and 33, a U-shaped pipe float stopper 183 is fixed to a flange 182 to be supported on the rear end side of the vertical frames 44a and 44b, and the side of the rotary case 21 rotating. It is configured to effectively prevent interference with the float 35. Further, as shown in FIGS. 6 and 31, the brackets of the left and right side frames 135 are arranged with the rising portion 69a facing the inside of the body, and the pivot shaft 179 attached to the rising portion 69a is protruded to the inside of the body so that the coil spring 178 is provided. Arranged inside the adjustment link 71, the vacant space at both ends of the fulcrum shaft 67 is increased to ensure a sufficient space for attaching the side marker 76.
[0050]
  14, 15, 18, 30, and 32, the left and right ends of the seedling extraction plate 90 and the left and right side bumpers 74 are provided so as to be foldable on the inner side of the machine body, and protrude outward from the seedling mount 16. The left and right ends of the seedling extraction plate 90 corresponding to approximately the length to be divided are formed into a divided body 184, and the sliding body 185, the rotating shaft 186, the connecting plate 187, the engagement body 188, and the posture holding are formed on the seedling extraction plate 90 main body side. The divided body 184 is connected to be foldable via a spring 189 or the like.
[0051]
  Further, the side bumper 74 has a vertical bumper bent portion 74a inserted through a mounting member 75 having a U-shaped side view that is fixed to both ends of the fulcrum shaft 67 so that the bumper bent vertical portion 74a can be moved up and down. A compression spring 191 is interposed between the spring seat 190 and the attachment member 75, and an L-shaped position restriction plate 192 that is brought into contact with the outer end surface and the front surface of the attachment member 75 to restrict the position is fixed to the vertical portion 74a. While the plate 192 and the front surface of the mounting member 75 are in contact with each other, the bumper horizontal portion 74b is projected in the extending direction of the fulcrum shaft 67 to protect the seedling extraction plate 90 and the like,compressionAgainst the spring 191sideWhen the bumper 74 is pulled up and the horizontal portion 74b is rotated approximately 90 degrees rearward to bring the restricting plate 192 and the outer end surface of the mounting member 75 into contact with each other, the width of the body is reduced, It is configured to allow easy storage.
[0052]
  As shown in FIG. 38, the end portion 74c of the horizontal portion 74b of the left and right side bumpers 74 is bent from the front to the rear, and from the position of the driver's seat 13 in the length direction of the end portion 74c.sideThe configuration is such that the open state of the bumper 74 can be easily confirmed to improve visibility, and inconvenience such as being caught even if it hits an obstacle.
[0053]
  When the divided body 184 of the side bumper 74 and the seedling extraction plate 90 is folded and stored, the side bumper 74 is wrapped outside the divided body 184 in a side view and the divided body 184 is opened outward. It is prevented by the end 74c of the bumper 74 to prevent accidents such as interference of the divided body 184, and also when foldedsideThe divided body 184 is protected by the bumper 74. In addition, the left and right side bumpers 74 arecompressionDamage or the like is prevented by the upward movement against the spring 191.
[0054]
  As shown in FIGS. 33 and 35, two groove forming devices 40 are arranged on the left and right sides of the center float 34 and one on each of the left and right side floats 34. Groover mounting portion 193 is provided at the inner base of the extension 176 and connected to the groover 40.TransportIt is configured so as to perform a favorable arrangement in which the space between the hose 41 and the seedling stage 16 is reduced.
[0055]
  As shown in FIG. 19, a hose mounting stay 194 is fixed above the front portions of the vertical frames 44a and 44b, and a clamp fitting 195 to be attached to the stay 194 is positioned near the upper portion of the boot 40a of the groove producing device 40.TransportThe hose 41 is fixedly supported, and in front of the horizontal frame 45, the seedling feed shaft 58, and the vertical feed cam 124 and in front of the seedling mounting table 16 and the seedling collection amount adjusting shaft 96.TransportThrough the hose 41,TransportThe hose 41 is configured to prevent bending of the fertilizer by suppressing bending of the hose 41 to a small extent.
[0056]
  As shown in FIG. 37, the driven cam 125 and the slider receiver 123 are outside the lateral movement range.TransportPlace the hose 41,TransportThe distance between the hose 41 and the seedling mount 16 is reduced, and at the bottom of the hydraulic unit such as the gear pump 109 and the motor 110 of the rolling cylinder 106 as shown in FIG.TransportThrough the hose 41,TransportThe space for the hose 41 is effectively secured.TransportAs shown in FIGS. 5 and 6, the hose 41 is assembled, and the gap 100 between the seedling feeding case 59 and the seedling collection amount adjusting shaft 96 is installed.TransportThere is no need for a separate hose attachment member through the hose 41.TransportThe hose 41 is configured to hold the hose 41 at a low cost and with a good weight.
[0057]
  As shown in FIG. 37, at the intermediate portion of the transport hose 41, left and right hose guides 196 are arranged on both left and right sides of the hitch bracket 24, and left and right ends of the left and right hose guides 196 are arranged.TransportAttach the clamp fitting 197 of the hose 41,TransportBy wrapping the hose 41 and the hitch bracket 24 in a side view, the distance between the machine and the seedling stage 16 is reduced to reduce the overall length of the machine body.
[0058]
【The invention's effect】
  As is clear from the above examples,The invention according to claim 1A transverse feed shaft that feeds the seedling table 16 laterallyAs a cross feed screw shaft66,The horizontal frame 45 of the planting frame 20 for connecting to the traveling vehicle 1 via the link mechanism 27 and the horizontal feed screw shaft 66 are arranged substantially in parallel.In rice transplanter,A seedling feeding case 59 is fixed to one side end of the horizontal frame 45, and a plurality of pipes 119 as shaft-like members are provided to the flange 118 of the other side end of the horizontal frame 45. A bearing as a bearing member for projecting toward the outside of the machine so as to be mounted substantially parallel to the screw shaft 66, and for disposing the bearing 120 of the transverse feed screw shaft 66 on the tip side of the shaft-shaped member 119. A plate 117 was provided.Since it is a thing, it feeds horizontallyscrewA plurality of shaft-shaped members 119 are provided on one side of the shaft 66.soSolid support and lateral feedscrewShaft 66simplyIt can be supported.
[0059]
  Also,The invention according to claim 2 providesStand up id marker 76Let meRetentionin order toMarker storage hook 134SaidSince the bearing member 117 is provided, the bearing member 117sideMarker 76StorageGive the guide function,sideThe marker 76 can be securely stood and held, and the marker storage mechanism can be easily reduced in cost and weight.InIt is possible.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter.
FIG. 2 is an overall plan view of a rice transplanter.
FIG. 3 is a side view of a planting part.
FIG. 4 is an explanatory side view of a planting part.
FIG. 5 is a plan view of a planting part.
FIG. 6 is an explanatory plan view of a planting part.
FIG. 7 is a side explanatory view of a planting part.
FIG. 8 is a side view of the lifting link mechanism.
FIG. 9 is a plan view of the lifting link mechanism.
FIG. 10 is a cross-sectional explanatory view of a planting frame part.
FIG. 11 is an explanatory front view of a seedling stage.
FIG. 12 is a front explanatory view of a hitch bracket portion.
FIG. 13 is a side view of a seedling feeding case portion.
FIG. 14 is a rear view of the side marker portion.
FIG. 15 is an explanatory plan view of a side marker portion.
FIG. 16 is an explanatory perspective view of a side marker portion.
FIG. 17 is an explanatory side view of a bearing plate portion.
FIG. 18 is a plan view of a seedling collection amount adjusting shaft portion.
FIG. 19 is a side explanatory view of the seedling vertical feeding portion.
FIG. 20 is an explanatory view of the rear surface of the seedling stage.
FIG. 21 is an explanatory side view of a driven cam portion.
FIG. 22 is a side view of a planting depth adjusting unit.
FIG. 23 is a plan view of a planting depth adjusting unit.
FIG. 24 is an explanatory diagram of a planting motor unit.
FIG. 25 is an explanatory view of a planting depth adjusting plate.
FIG. 26 is an explanatory diagram of a switch unit.
FIG. 27 is an explanatory side view of a seedling extraction plate portion.
FIG. 28 is a perspective explanatory view of a receiving blade part.
FIG. 29 is a diagram showing an inner surface of a seedling feeding case portion.
FIG. 30 is an explanatory side view of a side bumper portion.
FIG. 31 is an explanatory view of a side float pivot part.
FIG. 32 is an explanatory diagram of folding the seedling extraction plate.
FIG. 33 is a plan view of a float part.
FIG. 34 is an explanatory plan view of a float.
FIG. 35 is an explanatory plan view of a side float portion.
FIG. 36 is an explanatory diagram of a bottom surface of a side float.
FIG. 37 is an explanatory diagram of a transport hose part.
FIG. 38 is a diagram illustrating folding of the side bumper and the seedling extraction plate division body.
[Explanation of symbols]
1 traveling vehicle
16 Seedling stand
20 Planting frame
27 Link mechanism
45 horizontal frame
59 Seedling feeding case
66 Horizontal feed screw shaft (transverse feed shaft)
76 Side marker
117 Bearing plate (bearing member)
118 Flange
119 Pipe (shaft member)
120 Bearing
134 hook

Claims

A rice transplanter comprising a horizontal feed shaft for laterally feeding the seedling platform in the left-right direction , wherein the horizontal frame of the planting frame for connecting to a traveling vehicle via a link mechanism and the horizontal feed shaft are arranged substantially in parallel. In the machine
A seedling feeding case is fixed to one end of the horizontal frame,
A plurality of shaft-like members projecting toward the outside of the machine so as to be mounted substantially parallel to the lateral feed shaft, on the flange portion of the other side end of the horizontal frame,
A rice transplanter characterized in that a bearing member for disposing a bearing of the transverse feed shaft is provided on the distal end side of the shaft-like member .

The marker housing hooks for holding by upright support Idomaka, planting machine according to claim 1, wherein a provided in the bearing member.