JP2004194579A

JP2004194579A - Rice transplanter

Info

Publication number: JP2004194579A
Application number: JP2002367936A
Authority: JP
Inventors: Makoto Inoue; 誠井上; Tsunatake Yamashita; 綱丈山下; Tomohito Maekawa; 智史前川; Hideki Matsuoka; 秀樹松岡
Original assignee: Yanmar Agricultural Equipment Co Ltd
Current assignee: Yanmar Co Ltd
Priority date: 2002-12-19
Filing date: 2002-12-19
Publication date: 2004-07-15
Anticipated expiration: 2022-12-19
Also published as: JP3922366B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter improving the operation of containing a marker 76 through reducing mud-splashings on an operator in a steering seat or inside of the machine body in containing the marker 76 by diminishing the rising level of the tip of the marker 76 compared to the conventional cases, and also facilitating the operation of containing the marker 76 through reducing the operative force therefor. <P>SOLUTION: This rice transplanter includes a transverse striation marker 76 with a striation marker portion 82 on the tip of a marker arm 90, wherein the transverse striation marker 76 is turnable about three pivotal points 77, 80 and 81 located at the basal end, tip and midpoint of the marker arm 90, respectively. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は例えば苗載台及び苗植付爪を植付部に備えて連続的に苗植作業を行う田植機に関する。
【０００２】
【従来の技術】
従来、田植機に用いる左右筋引マーカは基部から先端部まで一体的に形成されたもので、マーカの水平使用状態（線引姿勢）から略直立収納位置まで上昇させた場合には、後輪上端より上方にマーカ先端部が位置する構造となっている。（例えば、特許文献１参照）
【０００３】
【特許文献１】
特開２００１−７８５１４号公報
【０００４】
【発明が解決しようとする課題】
上記の如き従来構造の場合、マーカ先端部に付着した泥土が、マーカ収納時にはオペレータ側に飛んでくる泥はね現象が生じることがある。またこの泥はね現象を回避させるため運転席位置を変更させるなどした場合機体前後長が長くなるという不都合がある。
【０００５】
【課題を解決するための手段】
したがって本発明は、マーカアーム先端に筋引マーカ部を有する左右筋引マーカを備えると共に、マーカアームの基端及び先端及び中間の３箇所の枢支点回りで回動可能に構成して、マーカ先端部の上昇量を従来に比べて小さくして、マーカ収納時に運転席の作業者や機体内側に泥が飛ぶなどの泥はね現象を低減させ、マーカ収納作業を良好とさせると共に、マーカの収納操作力を軽減させてマーカ収納作業の容易化を図るものである。
【０００６】
また、左右筋引マーカの上昇収納時筋引マーカ部を後輪上端より低位置に配置させて、マーカ収納時にマーカ先端部によって泥はね現象が発生しても、運転席から離れた後輪内側方向に泥はねさせる状態とさせて、作業者に泥がかかったり機体に泥が堆積するのを低減させるものである。
【０００７】
さらに、植付部の下降状態で筋引マーカを上昇収納させたとき、後輪後方と苗載台前方に形成される空間部に筋引マーカ部を配置させて、機体前後長を伸ばすことなく既存構造の機体内側にコンパクトにマーカを収納可能とさせると共に、植付作業の第１工程で行う所謂空植え時にあって畦際に障害物がある場合でもマーカを障害物に接触などさせることのない良好な作業を可能とさせるものである。
【０００８】
また、植付部の上昇時、苗載台上面より下方で本機最大幅寸法よりも内側に左右筋引マーカを収納させて、植付部を上昇させての機体旋回時に畦・大・家屋などの障害物にマーカを接触させ破損させる不都合を低減させて旋回性を良好とさせ作業の信頼性を向上させるものである。
【０００９】
【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は全体の側面図、図２は同平面図、図３は同正面図、図４は車体の側面図、図５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、空冷式エンジン２を車体フレーム３に搭載させ、ミッションケース４側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後方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後側上方にシートフレーム１２を介して運転席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。
【００１０】
また、図中１５は８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及び上部レール１９を介して植付ケース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を前記植付ケース２０に支持させ、該ケース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。
【００１１】
また、前記植付ケース２０前側のヒッチブラケット２３をトップリンク２４及びロワーリンク２５を含む昇降リンク機構２６を介し走行車１後側に連結させ、前記リンク機構２６を介して植付部１５を昇降させる油圧昇降シリンダ２７をロワーリンク２５に連結させ、前記前後輪６・８を走行駆動して移動すると同時に、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、連続的に苗を植える田植作業を行うように構成する。
【００１２】
また、図中２８は主変速レバー、２９は植付部１５の昇降・植付クラッチの入切・マーカ操作を行う植付操作レバー、３０は変速ペダル、３１はアクセルレバー、３２はユニットクラッチレバーである。
【００１３】
さらに、図中３３は中央２条均平用センタフロート、３４は左右２条均平用サイドフロート、３５は左右最外側１条均平用補助フロート、３６は肥料ホッパ３７内の肥料を送風機３８の送風力で各フロート３３・３４・３５の側条作溝器（図示せず）に排出させる８条用側条施肥機である。
【００１４】
図４乃至図５に示す如く、前記車体フレーム３は前部フレーム３９と中間フレーム４０と後部フレーム４１とに３分割させ、左右一対の前部フレーム３９にエンジン２を、左右一対の中間フレーム４０にフロントアクスルケース５を、左右一対の後部フレーム４１にリヤアクスルケース７及びエンジン２に燃料を供給する燃料タンク４２などを設けるもので、前部フレーム３９の前側と中間に前フレーム４３とベースフレーム４４を連結させて平面視４角枠状に形成し、前部フレーム３９の固定ブラケット４５とベースフレーム４４に防振ゴム４６を介しエンジン２を上載させる。
【００１５】
また、前記ミッションケース４の前面左側にパワーステアリングケース４７を設け、かつケース４の右側に無段油圧変速機（ＨＳＴ）４８を設け、油圧変速機４８の変速入力用ポンプ軸４９を車体前方向に突出させ、エンジン２の右下側で前後方向の伝達軸５０にポンプ軸４９を連結させると共に、エンジン２の出力軸５１に伝達ベルト５２を介して前記伝達軸５０を連結させ、エンジン２出力を油圧変速機４８に伝達する。
【００１６】
さらに、前記ミッションケース４とリヤアクスルケース７を車体の前後方向の中心ライン上でパイプ状の連結フレーム５３によって一体連結させ、ミッションケース４後方に走行出力軸５４及びＰＴＯ出力軸５５を突出させ、リヤアクスルケース７前方に突出させるリヤ入力軸５６にリヤ伝達軸５７を介し前記走行出力軸５４を連結させ、走行出力軸５４から左右の後輪８に動力を伝える。またリヤアクスルケース７上部の軸受５８に設ける仲介軸５９に自在継手軸６０を介して前記ＰＴＯ出力軸５５を連結させ、前記植付ケース２０の入力軸に自在継手軸を介して仲介軸５９を連結させ、ＰＴＯ出力軸５５から植付部１５に動力を伝える。
【００１７】
図６乃至図１３に示す如く、前記植付ケース２０は中央の植付駆動ケース６１と、各２条分用のロータリケース２１を後端部の左右両側に取付ける縦ケース６２と、駆動ケース６１と左右の縦ケース６２前端間及び隣接の各縦ケース６２前端間を連結する横パイプケース６３とを備え、横パイプケース６３の左右最外側端に略Ｕ形状の左右サイドバンパ６４を折畳み自在に備えると共に、サイドバンパ６４より内側の横パイプケース６３に左右サイドフレーム６５を立設させ、左右サイドフレーム６５の上端側間をローリングフレーム６６によって連結させ、左右サイドフレーム６５及びローリングフレーム６６に取付ける４つの上部苗受板シュー６７を上部レール１９に嵌合させて苗載台１６上部を左右摺動自在に支持するように構成している。
【００１８】
また、前記ヒッチブラケット２３にローリング支点軸６８を介して植付ケース２０中央の支点部材６９を回動自在に連結させ、支点部材６９とローリングフレーム６６中央の左右固定ブラケット７０間を左右アーム７１によって連結させ、左右固定ブラケット７０と左右サイドフレーム６５基端間を斜め補強部材７２で連結させ、ヒッチブラケット２３と左固定ブラケット７０間に油圧或いは電動ローリングシリンダ７３を介設させて、該シリンダ７３の進退制御で支点軸６８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。
【００１９】
図１２、図１４乃至図２０に示す如く、前記植付ケース２０左右最外側の縦ケース６２の前側上部にブラケット７４を介しマーカ台７５を固設させ、該マーカ台７５に起伏自在に左右筋引マーカ７６を取付けるもので、マーカ台７５に第１揺動軸７７を介し基端揺動板７８を揺動自在に連結する第１アーム７９と、第１アーム７９先端に第２揺動軸８０を介し基端側を揺動自在に連結する第２アーム８１と、第２アーム８１先端の軸回り回動自在に連結して先端側に風車形回転マーカ体８２を有する第３アーム８４とを左右筋引マーカ７６とを備え、図１５の左側マーカ７６に示す如く、植付部１５の下降状態で第１及び第２アーム７９・８１を機体外側の右方向に一直線に伸ばし第３アーム８４を略９０度下方向に折曲げるとき、マーカ体８２を圃場面に接地させ、マーカ体８２の外周縁に放射状に突出形成する爪部材８５によって圃場からの泥土を取出し圃場表面上に一定間隔毎に落下堆積させる状態とさせて次回工程の走行基準線を形成させ、次回工程作業中に機体前側のセンタマーカ９１をこの基準線に合わせた走行を行うように構成している。
【００２０】
一方図１５の右側マーカ７６・図１６、図２０に示す如く、植付部１５の下降状態で、前記揺動板７８に連結するマーカワイヤ８６を引張操作し第１アーム７９を横水平姿勢より略直立姿勢に起立させるとき、ロッドなどの連動部材８７によって第２アーム８１を第１アーム７９に沿う状態に折畳んで近接させ、前記マーカ体８２を後輪８の左或いは左外側で後輪８上端より低位置の近接位置に収納状態とさせるもので、図２４、図２５にも示す如く、前記連結部材８７はマーカ台７５第２アーム８１基端のアーム揺動板８１ａとの間に軸８１ｂ・８１ｃを介して連結させ、第１揺動軸７７を支点として第１アーム７９を上方向に揺動させるとき、連結部材８７によって第２揺動軸８０を中心として揺動板８１ａを第１アーム７９の揺動方向とは反対方向に揺動させて、第１アーム７９の起立動作に連動して第２アーム８１を下方向に折畳み状態とさせるものである。
【００２１】
また図１４に示す如く、植付部１５の上昇状態で前記マーカ７６の収納時には後輪８後側上方と苗載台１６間の余剰空間部８８に大きなスペースを必要とするマーカ体８２をコンパクトに収納して旋回作業などでの支持とさせることが防止されるもので、図１６、図１９に示す如く、この場合マーカ７６を苗載台１６の最大幅寸法Ｗより寸法Ｌ内側で苗載台１６の最上端より下側に収納状態とさせて、マーカ７６を破損などから保護するように構成している。
【００２２】
なお、第２アーム８１は調節ボルト８９を介し第１アーム７９に取付長さ調節自在に取付けたものである。また前記左右サイドフレーム６５には筋引マーカ７６の収納フック１０２を取付けて、該フック１０２にマーカ７６を係合時には機体内側に最大収納させるように設けている。
【００２３】
上記からも明らかなように、第１アーム７９・第２アーム８１・第３アーム８４で形成するマーカアーム９０先端に起伏自在なマーカ部であるマーカ体８２を有する左右筋引マーカ７６を備え、マーカアーム９０の基端及び先端及び中間の３箇所の枢支点である軸７７・８０及びアーム８１回りで回動可能に構成したことによって、マーカ７６先端部の上昇量を従来に比べて小さくして、マーカ７６収納時に運転席の作業者や機体内側に泥が飛ぶなどの泥はね現象を低減させ、マーカ７６収納作業を良好とさせると共に、マーカ７６の収納操作力を軽減させてマーカ７６収納作業の容易化を図ることができる。
【００２４】
また、左右筋引マーカ７６の上昇収納時マーカ体８２を後輪８上端より低位置に配置させたことによって、マーカ７６収納時にマーカ先端部によって泥はね現象が発生しても、運転席１３から離れた後輪８内側方向に泥はねさせる状態とさせて、作業者に泥がかかったり機体に泥が堆積するのを低減させることができる。
【００２５】
さらに、植付部１５の下降状態で筋引マーカ７６を上昇収納させたとき、後輪８後方と苗載台１５前方に形成される空間部８８にマーカ体８２を配置させたことによって、機体前後長を伸ばすことなく既存構造の機体内側にコンパクトにマーカ７６を収納可能とさせると共に、植付作業の第１工程で行う所謂空植え時にあって畦際に障害物がある場合でもマーカ７６を障害物に接触などさせることのない良好な作業を可能とさせることができる。
【００２６】
また、植付部１５の上昇時、苗載台１６上面より下方で本機最大幅寸法よりも内側に左右筋引マーカ７６を収納させたことによって、植付部１５を上昇させての機体旋回時に畦・大・家屋などの障害物にマーカ７６を接触させ破損させる不都合を低減させて旋回性を良好とさせ作業の信頼性を向上させることができる。
【００２７】
図２１、図２２に示す如く、左右のリヤアクスルケース７上部間を左右方向の補強パイプ９２で連結させ、前記連結フレーム５３の後端上面と補強パイプ９２中間とを補強板９３で連結させると共に、ロワーリンク２５のリンク軸９４を支持するリンク受け部材９５に補強パイプ９２に固設するブラケット９６をボルト９７止め固定させて、植付部１５の荷重をロワーリンク２５を介しリヤアクスルケース７・連結フレーム５３に支持強度良好に支持させるように構成している。
【００２８】
図２１、図２３に示す如く、前記筋引マーカ７６のマーカワイヤ８６をロワーリンク２５に連結させるもので、マーカワイヤ８６を構成するインナワイヤ８６ａの一端側をロワーリンク２５のワイヤ受け９８に止着させ、インナワイヤ８６ａのアウタチューブ８６ｂをヒッチブラケット２３のワイヤ受け９９に止着させ、植付部１５の上昇時にはインナワイヤ８６ａを引張ってマーカ７６を収納するように構成している。
【００２９】
そして前記ワイヤ受け９８・９９にはインナワイヤ８６ａとアウタチューブ８６ｂ両方の止着を可能とさせる止着部１００・１０１をそれぞれ形成させ、図２３実線状態の如くマーカ７６を植付ケース２０に装備させるリヤ仕様ではロワーリンク２５のワイヤ受け９８にインナワイヤ８６ａを、またヒッチブラケット２３のワイヤ受け９９にはアウタチューブ８６ｂを連結させる一方、同図仮想線に示す如く、マーカ７６を機体前側に装備させるフロント仕様ではヒッチブラケット２３のワイヤ受け９９にインナワイヤ８６ａを、またロワーリンク２５のワイヤ受け９８にアウタチューブ８６ｂを連結させて、従来の如くマーカ７６のリヤ或いはフロント仕様でワイヤ８６をとり回すなどの効率の悪さを解消させるように構成している。
【００３０】
【発明の効果】
以上実施例から明らかなように本発明は、マーカアーム９０先端に筋引マーカ部８２を有する左右筋引マーカ７６を備えると共に、マーカアーム９０の基端及び先端及び中間の３箇所の枢支点７７・８０・８１回りで回動可能に構成したものであるから、マーカ７６先端部の上昇量を従来に比べて小さくして、マーカ７６収納時に運転席の作業者や機体内側に泥が飛ぶなどの泥はね現象を低減させ、マーカ７６収納作業を良好とさせると共に、マーカ７６の収納操作力を軽減させてマーカ７６収納作業の容易化を図ることができるものである。
【００３１】
また、左右筋引マーカ７６の上昇収納時筋引マーカ部８２を後輪８上端より低位置に配置させたものであるから、マーカ７６収納時にマーカ先端部によって泥はね現象が発生しても、運転席１３から離れた後輪８内側方向に泥はねさせる状態とさせて、作業者に泥がかかったり機体に泥が堆積するのを低減させることができるものである。
【００３２】
さらに、植付部１５の下降状態で筋引マーカ７６を上昇収納させたとき、後輪８後方と苗載台１５前方に形成される空間部８８に筋引マーカ部８２を配置させたものであるから、機体前後長を伸ばすことなく既存構造の機体内側にコンパクトにマーカ７６を収納可能とさせると共に、植付作業の第１工程で行う所謂空植え時にあって畦際に障害物がある場合でもマーカ７６を障害物に接触などさせることのない良好な作業を可能とさせることができるものである。
【００３３】
また、植付部１５の上昇時、苗載台１６上面より下方で本機最大幅寸法よりも内側に左右筋引マーカ７６を収納させたものであるから、植付部１５を上昇させての機体旋回時に畦・大・家屋などの障害物にマーカ７６を接触させ破損させる不都合を低減させて旋回性を良好とさせ作業の信頼性を向上させることができるものである。
【図面の簡単な説明】
【図１】田植機の全体側面図。
【図２】田植機の全体平面図。
【図３】田植機の全体正面図。
【図４】車体の側面図。
【図５】車体の平面図。
【図６】植付部の側面説明図。
【図７】植付部の斜視説明図。
【図８】植付部の正面説明図。
【図９】ヒッチブラケット部の側面説明図。
【図１０】フロート部の平面説明図。
【図１１】フロート部の正面説明図。
【図１２】苗載台支持部の説明図。
【図１３】植付ケース部の側面説明図。
【図１４】植付部上昇時の側面説明図。
【図１５】植付部の正面説明図。
【図１６】マーカの収納説明図。
【図１７】マーカの斜視説明図。
【図１８】マーカの側面説明図。
【図１９】マーカの正面説明図。
【図２０】植付部下降時の側面説明図。
【図２１】リヤアクスル部の斜視説明図。
【図２２】補強パイプ部の説明図。
【図２３】マーカワイヤ取付部の説明図。
【図２４】マーカの折畳み説明図。
【図２５】マーカの折畳み動作を示す説明図。
【符号の説明】
８後輪
１５植付部
１６苗載台
７６マーカ
７７軸（枢支点）
８０軸（枢支点）
８１第２アーム（枢支点）
８２マーカ体（マーカ部）
８８空間部
９０マーカアーム[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a rice transplanter that continuously performs a seedling planting operation, for example, by providing a seedling mounting table and a seedling planting claw in a planting section.
[0002]
[Prior art]
Conventionally, left and right muscle markers used in rice transplanters are integrally formed from the base to the tip. When the marker is raised from a horizontal use state (drawing posture) to a substantially upright storage position, the rear wheel The structure is such that the marker tip is located above the upper end. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP 2001-78514 A
[Problems to be solved by the invention]
In the case of the conventional structure as described above, the mud adhering to the tip of the marker may cause a mud splashing phenomenon flying toward the operator when the marker is stored. Further, when the position of the driver's seat is changed in order to avoid the mud splashing phenomenon, there is a disadvantage that the longitudinal length of the aircraft becomes longer.
[0005]
[Means for Solving the Problems]
Therefore, the present invention comprises a left and right muscle marker having a muscle marker at the distal end of the marker arm, and is configured to be rotatable around the base end and the distal end of the marker arm and three intermediate pivot points. The height of the raised part is smaller than before, reducing mud splashing phenomena, such as mud flying into the driver's seat or inside the machine when storing the marker, improving the marker storing work and storing the marker. The operation force is reduced to facilitate the marker storage operation.
[0006]
Also, when the left and right muscle pulling markers are retracted, the muscle pulling marker portion is disposed at a position lower than the upper end of the rear wheel, so that even if a mud splashing phenomenon occurs at the marker tip when the marker is stored, the rear wheel separated from the driver's seat. The mud is made to splash inward, so that mud is not applied to the operator or mud is deposited on the machine body.
[0007]
Further, when the pulling marker is raised and stored in the lowered state of the planting portion, the pulling marker portion is arranged in a space formed behind the rear wheel and in front of the seedling mounting table, without extending the longitudinal length of the machine. The marker can be stored compactly inside the fuselage of the existing structure, and the marker can be brought into contact with the obstacle even if there is an obstacle in the ridge at the so-called empty planting performed in the first step of the planting operation. It does not allow good work.
[0008]
Also, when the planting section is raised, the left and right muscle markers are stored below the upper surface of the seedling table and inside the maximum width of the machine, and when turning the machine with the planting section raised, the ridge, large, house The inconvenience of contacting the marker with an obstacle, such as an obstacle, to damage the marker is reduced, the turning property is improved, and the reliability of the operation is improved.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is an overall side view, FIG. 2 is a plan view of the same, FIG. 3 is a front view of the same, FIG. 4 is a side view of a vehicle body, and FIG. 5 is a plan view of the same. The air-cooled engine 2 is mounted on the vehicle body frame 3, the front case 6 for paddy fields is supported on the side of the transmission case 4 via the front axle case 5, and the paddy field is mounted on the rear axle case 7 behind the transmission case 4. The rear wheel 8 is supported. A spare seedling mounting table 10 is mounted on both sides of the hood 9 covering the engine 2 and the like, and the transmission case 4 and the like are covered by a body cover 11 on which an operator rides. The driver's seat 13 is attached to the vehicle, and a steering handle 14 is provided in front of the driver's seat 13 and at the rear of the hood 9.
[0010]
In the figure, reference numeral 15 denotes a planting portion provided with a seedling mounting table 16 for eight-row planting and a plurality of seedling mounting claws 17 and the like. The planting case 20 is supported by the planting case 20 via the lower rail 18 and the upper rail 19 so as to be reciprocally slidable left and right, and a rotary case 21 that rotates at a constant speed in one direction is supported by the planting case 20 to rotate the case 21. A pair of claw cases 22 are disposed at symmetrical positions about the axis, and seedlings 17 are attached to tips of the claw cases 22.
[0011]
Further, the hitch bracket 23 on the front side of the planting case 20 is connected to the rear side of the traveling vehicle 1 via a lifting link mechanism 26 including a top link 24 and a lower link 25, and the planting section 15 is raised and lowered via the link mechanism 26. A hydraulic raising / lowering cylinder 27 to be connected is connected to the lower link 25, and the front and rear wheels 6.8 are driven and moved. It is configured to take out and continuously perform rice transplanting to plant seedlings.
[0012]
In the figure, reference numeral 28 denotes a main shift lever, 29 denotes a planting operation lever for raising / lowering the planting section 15, turning on / off the planting clutch, and operating the marker, 30 denotes a speed change pedal, 31 denotes an accelerator lever, and 32 denotes a unit clutch lever. It is.
[0013]
Further, in the figure, reference numeral 33 denotes a center float for leveling the center of two lines, 34 denotes a side float for leveling the left and right lines, 35 denotes an auxiliary float for leveling the outermost one line on the left and right, and 36 denotes a blower 38 for feeding fertilizer in the fertilizer hopper 37. This is an 8-row side-strip fertilizer that is discharged to the side-slot production device (not shown) of each of the floats 33, 34, and 35 by the sending wind.
[0014]
As shown in FIGS. 4 and 5, the body frame 3 is divided into a front frame 39, an intermediate frame 40, and a rear frame 41, and the engine 2 is mounted on the pair of left and right front frames 39 and the pair of left and right intermediate frames 40. A front axle case 5 is provided, and a pair of left and right rear frames 41 are provided with a rear axle case 7, a fuel tank 42 for supplying fuel to the engine 2, and the like. Are connected to form a quadrangular frame shape in a plan view, and the engine 2 is mounted on the fixing bracket 45 and the base frame 44 of the front frame 39 via the vibration isolating rubber 46.
[0015]
A power steering case 47 is provided on the front left side of the transmission case 4 and a continuously variable hydraulic transmission (HST) 48 is provided on the right side of the case 4, and a shift input pump shaft 49 of the hydraulic transmission 48 is moved forward of the vehicle body. The pump shaft 49 is connected to the transmission shaft 50 in the front-rear direction on the lower right side of the engine 2, and the transmission shaft 50 is connected to the output shaft 51 of the engine 2 via a transmission belt 52, so that the output of the engine 2 Is transmitted to the hydraulic transmission 48.
[0016]
Further, the transmission case 4 and the rear axle case 7 are integrally connected by a pipe-shaped connecting frame 53 on the center line in the front-rear direction of the vehicle body, and the traveling output shaft 54 and the PTO output shaft 55 The traveling output shaft 54 is connected to a rear input shaft 56 projecting forward of the case 7 via a rear transmission shaft 57, and power is transmitted from the traveling output shaft 54 to the left and right rear wheels 8. Further, the PTO output shaft 55 is connected via a universal joint shaft 60 to an intermediate shaft 59 provided on a bearing 58 on the upper part of the rear axle case 7, and the intermediate shaft 59 is connected via an universal joint shaft to the input shaft of the planting case 20. Then, power is transmitted from the PTO output shaft 55 to the planting section 15.
[0017]
As shown in FIGS. 6 to 13, the planting case 20 includes a central planting drive case 61, a vertical case 62 for attaching the rotary case 21 for each of the two rows to the left and right sides of the rear end, and a drive case 61. And a horizontal pipe case 63 that connects between the front ends of the left and right vertical cases 62 and between the front ends of the adjacent vertical cases 62. The U-shaped left and right side bumpers 64 are freely foldable at the left and right outermost ends of the horizontal pipe case 63. At the same time, the left and right side frames 65 are erected on the horizontal pipe case 63 inside the side bumper 64, the upper ends of the left and right side frames 65 are connected by a rolling frame 66, and attached to the left and right side frames 65 and the rolling frame 66. The two upper seedling receiving plate shoes 67 are fitted to the upper rail 19 to support the upper part of the seedling mounting table 16 so as to be slidable left and right. That.
[0018]
Further, a fulcrum member 69 at the center of the planting case 20 is rotatably connected to the hitch bracket 23 via a rolling fulcrum shaft 68, and a left and right arm 71 connects between the fulcrum member 69 and the left and right fixed bracket 70 at the center of the rolling frame 66. The left and right fixing brackets 70 and the left and right side frames 65 are connected by diagonal reinforcing members 72 between the base ends thereof, and a hydraulic or electric rolling cylinder 73 is interposed between the hitch bracket 23 and the left fixing bracket 70 so that the cylinder 73 The planting section 15 is swung right and left around the fulcrum axis 68 by the advance / retreat control to maintain the planting section 15 horizontally.
[0019]
As shown in FIGS. 12, 14 to 20, a marker table 75 is fixed to the front upper portion of the vertical case 62 on the left and right outermost sides of the planting case 20 via a bracket 74. A pull arm 76 is attached, a first arm 79 for swingably connecting a base rocking plate 78 to a marker table 75 via a first rocking shaft 77, and a second rocking shaft at the tip of the first arm 79. A second arm 81 rotatably connected to the base end side via an 80; a third arm 84 connected to the end of the second arm 81 so as to be rotatable around an axis thereof and having a windmill-shaped rotary marker body 82 at the end side; The left and right muscle markers 76 are provided, and as shown by the left marker 76 in FIG. 15, the first and second arms 79 and 81 are extended straight to the right outside the body of the third arm when the planting portion 15 is lowered. When bending 84 approximately 90 degrees downward, the marker body 2 is grounded on the field scene, and the mud from the field is taken out by the claw members 85 radially protrudingly formed on the outer peripheral edge of the marker body 82 so as to be dropped and deposited on the surface of the field at regular intervals. A line is formed, and the center marker 91 on the front side of the machine body is adapted to travel along the reference line during the next process operation.
[0020]
On the other hand, as shown in the right side marker 76 in FIG. 15 and FIGS. 16 and 20, with the planting portion 15 lowered, the marker wire 86 connected to the rocking plate 78 is pulled to move the first arm 79 from the horizontal position. When standing upright, the second arm 81 is folded by the interlocking member 87 such as a rod so as to be along the first arm 79 so as to be close to the first arm 79, and the marker body 82 is moved to the left or the left outside of the rear wheel 8. As shown in FIGS. 24 and 25, the connecting member 87 is pivoted between the marker base 75 and the arm swinging plate 81a at the base end of the second arm 81 as shown in FIGS. When the first arm 79 is swung upward with the first swing shaft 77 as a fulcrum, the swing plate 81a is pivoted about the second swing shaft 80 by the connecting member 87. Swing direction of 1 arm 79 Is swung in the opposite direction is a second arm 81 in conjunction with the standing operation of the first arm 79 that is a folded downward.
[0021]
Further, as shown in FIG. 14, when the planting section 15 is raised and the marker 76 is stored, the marker body 82 which requires a large space in the extra space 88 between the rear upper side of the rear wheel 8 and the seedling mounting table 16 is compact. In this case, as shown in FIG. 16 and FIG. 19, in this case, the marker 76 is placed on the inner side of the seedling mounting table 16 within the dimension L from the maximum width dimension W. The marker 16 is stored below the uppermost end of the table 16 to protect the marker 76 from damage and the like.
[0022]
The second arm 81 is attached to the first arm 79 via an adjustment bolt 89 so that the attachment length can be freely adjusted. A storage hook 102 for a muscle marker 76 is attached to the left and right side frames 65, and is provided so that when the marker 76 is engaged with the hook 102, the storage hook 102 is maximally stored inside the body.
[0023]
As is clear from the above description, a left and right muscle pulling marker 76 having a marker body 82 which is a marker portion which can be raised and lowered is provided at the tip of a marker arm 90 formed by the first arm 79, the second arm 81, and the third arm 84. The marker arm 90 is configured to be rotatable around the shafts 77 and 80 and the arm 81, which are three pivot points between the base end and the end and the intermediate position, so that the amount of elevation of the tip of the marker 76 can be reduced as compared with the conventional case. Thus, when the marker 76 is stored, the mud splashing phenomenon, such as mud flying into the operator's seat or inside the machine body, is reduced, and the marker 76 storing operation is improved. The storage operation can be facilitated.
[0024]
Further, by disposing the marker body 82 at the time of raising and retracting the right and left muscle pulling markers 76 at a position lower than the upper end of the rear wheel 8, even if a mud splash phenomenon occurs due to the marker tip portion at the time of storing the marker 76, the driver's seat 13 The mud is made to splash toward the inside of the rear wheel 8 away from the mud, so that it is possible to reduce mud splashing on the operator and accumulation of mud on the machine body.
[0025]
Further, when the pulling marker 76 is lifted and stored in the lowered state of the planting section 15, the marker body 82 is arranged in a space 88 formed behind the rear wheel 8 and in front of the seedling mounting table 15, and the The marker 76 can be stored compactly inside the body of the existing structure without extending the fore-and-aft length, and the marker 76 can be stored even when there is an obstacle at the ridge when so-called empty planting is performed in the first step of the planting operation. It is possible to perform a favorable operation without making contact with an obstacle.
[0026]
Further, when the planting section 15 is raised, the left and right muscle pulling markers 76 are stored below the upper surface of the seedling mounting table 16 and inside the maximum width dimension of the machine, so that the body turning with the planting section 15 raised. At the same time, the inconvenience of contacting the marker 76 with an obstacle such as a ridge, a large building, a house, or the like to damage the marker 76 can be reduced, the turning property can be improved, and the reliability of the operation can be improved.
[0027]
As shown in FIGS. 21 and 22, the upper portions of the left and right rear axle cases 7 are connected by a reinforcing pipe 92 in the left-right direction, and the upper surface of the rear end of the connecting frame 53 and the middle of the reinforcing pipe 92 are connected by a reinforcing plate 93. A bracket 96 fixed to a reinforcing pipe 92 is fixedly fastened to a link receiving member 95 supporting a link shaft 94 of the lower link 25 by a bolt 97, and the load of the planting portion 15 is reduced via the lower link 25 to the rear axle case 7 / connection frame. 53 is configured to be supported with good support strength.
[0028]
As shown in FIGS. 21 and 23, the marker wire 86 of the muscle marker 76 is connected to the lower link 25. One end of an inner wire 86a constituting the marker wire 86 is fixed to a wire receiver 98 of the lower link 25. The outer tube 86b of the inner wire 86a is fixed to the wire receiver 99 of the hitch bracket 23, and the marker 76 is housed by pulling the inner wire 86a when the planting portion 15 is raised.
[0029]
The wire receivers 98 and 99 are respectively provided with fastening portions 100 and 101 for enabling fastening of both the inner wire 86a and the outer tube 86b, and the marker 76 is mounted on the planting case 20 as shown by the solid line in FIG. In the rear specification, the inner wire 86a is connected to the wire receiver 98 of the lower link 25, and the outer tube 86b is connected to the wire receiver 99 of the hitch bracket 23, while the marker 76 is mounted on the front side of the fuselage as shown by the phantom line in FIG. According to the specification, the inner wire 86a is connected to the wire receiver 99 of the hitch bracket 23, and the outer tube 86b is connected to the wire receiver 98 of the lower link 25. Is configured to eliminate the badness.
[0030]
【The invention's effect】
As is apparent from the above embodiment, the present invention includes the left and right muscle markers 76 having the muscle marker portions 82 at the distal ends of the marker arms 90, and the base and distal ends of the marker arm 90 and three pivot points 77 in the middle.・ Since it is configured to be rotatable around 80 and 81, the amount of elevation of the tip of the marker 76 is made smaller than in the past, and when the marker 76 is stored, mud flies into the operator in the driver's seat or inside the machine. In addition to reducing the mud splash phenomenon and improving the marker 76 storing operation, the marker 76 storing operation force can be reduced to facilitate the marker 76 storing operation.
[0031]
Further, since the muscle pulling marker portion 82 is stored at a position lower than the upper end of the rear wheel 8 when the left and right muscle pulling markers 76 are raised, even if a mud splashing phenomenon occurs due to the marker tip when the marker 76 is stored. The mud is made to splash toward the inside of the rear wheel 8 away from the driver's seat 13, so that it is possible to reduce mud splashing on the operator and accumulation of mud on the machine body.
[0032]
Furthermore, when the pulling marker 76 is raised and stored in the lowered state of the planting section 15, the pulling marker section 82 is disposed in a space 88 formed behind the rear wheel 8 and in front of the seedling mounting table 15. Therefore, the marker 76 can be compactly stored inside the existing structure of the fuselage without extending the longitudinal length of the fuselage, and there is an obstacle at the ridge at the time of so-called empty planting performed in the first step of the planting work. However, it is possible to perform a favorable operation without bringing the marker 76 into contact with an obstacle.
[0033]
Further, when the planting section 15 is raised, the left and right muscle pulling markers 76 are stored below the upper surface of the seedling mounting table 16 and inside the maximum width dimension of the machine, so that the planting section 15 is raised. The inconvenience of contacting the marker 76 with an obstacle such as a ridge, a large building, a house, or the like at the time of turning the body can be reduced, and the turning property can be improved, and the reliability of the operation can be improved.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter.
FIG. 2 is an overall plan view of the rice transplanter.
FIG. 3 is an overall front view of the rice transplanter.
FIG. 4 is a side view of the vehicle body.
FIG. 5 is a plan view of the vehicle body.
FIG. 6 is an explanatory side view of the planting section.
FIG. 7 is an explanatory perspective view of a planting section.
FIG. 8 is an explanatory front view of the planting section.
FIG. 9 is an explanatory side view of the hitch bracket.
FIG. 10 is an explanatory plan view of a float portion.
FIG. 11 is an explanatory front view of a float unit.
FIG. 12 is an explanatory diagram of a seedling mounting table support portion.
FIG. 13 is an explanatory side view of the planting case portion.
FIG. 14 is an explanatory side view when the planting section is raised.
FIG. 15 is an explanatory front view of the planting section.
FIG. 16 is an explanatory diagram of storing a marker.
FIG. 17 is an explanatory perspective view of a marker.
FIG. 18 is an explanatory side view of the marker.
FIG. 19 is an explanatory front view of a marker.
FIG. 20 is an explanatory side view when the planting section is lowered.
FIG. 21 is an explanatory perspective view of a rear axle portion.
FIG. 22 is an explanatory diagram of a reinforcing pipe portion.
FIG. 23 is an explanatory view of a marker wire attaching portion.
FIG. 24 is an explanatory view of folding of a marker.
FIG. 25 is an explanatory diagram showing a marker folding operation.
[Explanation of symbols]
8 Rear wheel 15 Planting section 16 Seedling stand 76 Marker 77 Axle (pivot point)
80 axes (pivot point)
81 2nd arm (pivot point)
82 Marker body (Marker part)
88 space 90 marker arm

Claims

A rice transplanter comprising: a left and right muscle marker having a muscle marker portion at a tip of a marker arm; and a rotatable pivot about a base end and a tip of the marker arm and three intermediate pivot points.

2. The rice transplanter according to claim 1, wherein the left and right muscle pulling markers are disposed at a position lower than the upper end of the rear wheel when the raising and lowering markers are stored.

3. The muscle pulling marker portion is arranged in a space formed behind the rear wheel and in front of the seedling mounting table when the muscle pulling marker is raised and stored in a lowered state of the planting portion. Rice transplanter as described.

2. The rice transplanter according to claim 1, wherein when the planting section is raised, the left and right muscle markers are stored below the upper surface of the seedling mounting table and inside the maximum width dimension of the machine.