JP3986035B2

JP3986035B2 - Rice transplanter

Info

Publication number: JP3986035B2
Application number: JP07291199A
Authority: JP
Inventors: 裕一竹田
Original assignee: Yanma Agricultural Equipment Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd
Priority date: 1999-03-18
Filing date: 1999-03-18
Publication date: 2007-10-03
Anticipated expiration: 2019-03-18
Also published as: JP2000262117A

Description

【０００１】
【発明の属する技術分野】
本発明は苗載台及び植付爪を備えて連続的に苗植作業を行う田植機にあって、植付条の側方に施肥を行う田植機に関する。
【０００２】
【発明が解決しようとする課題】
従来、施肥ホッパ内の肥料を送風機の空気送給管からの空気流でもって搬送して施肥を行う施肥装置を備えた田植機にあっては、施肥装置の繰出部を挾んだ前方に前記空気送給管を左右長手方向に配設して、空気送給管と繰出部との良好な配管接続を行うと共に、繰出部を駆動する駆動リンク機構を空気送給管との反対側となる繰出部の後方に配設して、空気送給管との干渉を回避させた駆動リンク機構の設置を行っている。しかし乍らこのような繰出部の後方に駆動リンク機構を配設する構造の場合、苗載台がローリングやピッチングした際の干渉を避けるため、苗載台の上下長さを短くしたり、本機に植付部を連結するリンクの長さを長くするなどしているが、この場合苗載台上の苗量が不足状態となったり、機体全長が長くなるなどの不都合がある。またこれら苗載台の上下長さやリンク長さを一定保持させる場合には施肥機の支持高さを下げたり、駆動リンクを短くするなどして苗載台との干渉を回避させる必要があるが、施肥機の支持高さが低くなる程、空気送給管と繰出部との配管接続も行い難くなったり、駆動リンクが短くなる程ガタや寸法精度の影響が大きくなるため駆動精度が低下するなどの不都合があった。
【０００３】
【課題を解決するための手段】
したがって本発明は、本機の車体フレームの後端側に支柱を配置し、支柱の上端側に施肥機を配置すると共に、本機の前記施肥機よりも後方に植付部を昇降自在に装設する田植機において、前記本機下方のＰＴＯ軸と前記施肥機の繰出部とを連動連結する施肥駆動機構を、前記繰出部より前方位置に上下方向に延びるように配設した縦駆動軸と、前記ＰＴＯ軸から前記縦駆動軸の下端への第１回転伝達部としてのチェン及び出力軸及びベベルギヤと、前記縦駆動軸の上端からその後方に位置する前記繰出部への第２回転伝達部としてのベベルギヤ及び中間伝達軸及びチェンとで構成し、前記縦駆動軸の途中に、前記繰出部の回転を変速する無段変速機を配置し、前記支柱の前側に前記無段変速機の変速ケースを配置し、前記変速ケースの前端側のガイド部に、繰出量調節ノブを有する調節ネジ軸を配置し、前記繰出量調節ノブの操作によって前記調節ネジ軸を介して前記無段変速機の出力回転数を変更するように構成したものであるから、繰出部（３８）から繰出される肥料の繰出量を、運転席（１３）の作業者によって簡単に調節できるものである。
【０００４】
【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）前部上方に搭載させ、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、前記ギヤ変速ケース（４）の後部にリヤアクスルケース（７）を連設し、前記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、足掛台（１１）を介して作業者が搭乗するステップである車体カバー（１２）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（１２）上部に運転席（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６条植え用の苗載台（１６）並びに複数の植付爪（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）及びガイドレール（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）先端に植付爪（１７）（１７）を取付ける。また前記植付ケース（２０）の前側にローリング支点軸（２３）を介して支持フレーム（２４）を設け、トップリンク（２５）及びロワーリンク（２６）を含むリンク機構（２７）を介して走行車（１）後側に支持フレーム（２４）を連結させ、前記リンク機構（２７）を介して植付部（１５）を昇降させる昇降シリンダ（２８）をロワーリンク（２６）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）は植付昇降兼作業走行変速用副変速レバー、（３１）は植付け感度設定器、（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条分均平用センターフロート、（３５）は２条分均平用サイドフロート、（３６）は６条用の施肥機である側条施肥機である。
【０００８】
さらに、図３、図４に示す如く、肥料を入れる施肥ホッパ（３７）と、肥料を定量供給する肥料繰出部である肥料繰出ケース（３８）と、フロート（３４）（３５）の側条作溝器（３９）にフレキシブル形搬送ホース（４０）を介して肥料を排出させるターボブロワー型送風機（４１）と、円筒形の空気送給管であるエアタンク（４２）とを、前記施肥機（３６）に備えると共に、エアタンク（４２）右側端に送風機（４１）を取付け、６条分６組の肥料繰出ケース（３８）…をエアタンク（４２）上側に配設させている。
【０００９】
また、図６、図７に示す如く、前記車体フレーム（３）後端の左右支柱（４３）上端間に横架する水平フレーム（４４）両側に左右ベースフレーム（４５）（４５）を取付け、前後方向に略水平に横架させる前記ベースフレーム（４５）を介して施肥機（３６）を設けると共に、ベースフレーム（４５）後端部と車体フレーム（３）間にサイドステー（４６）を連結させ、左右ベースフレーム（４５）（４５）の前後に立設させる昇降レール（４７）（４８）に左右軸受板（４９）（４９）を介して施肥機（３６）を昇降自在に支持させている。
【００１０】
そして、左右軸受板（４９）（４９）の上部前側を丸パイプ形の横フレーム（５０）で、また上部後側を四角パイプ形の横フレーム（５１）で一体固定させて、これら横フレーム（５０）（５１）に６組の繰出ケース（３８）を固定支持させると共に、左右ベースフレーム（４５）（４５）の前側間に横長の前記エアタンク（４２）を取外し自在に固定させている。
【００１１】
図５に示す如く、前記繰出ケース（３８）の上面前側の取入口（５２）に前記ホッパ（３７）の下部出口（５３）を嵌着させると共に、前記繰出ケース（３８）前面下側に取出口（５４）を形成し、着脱自在なキャップ（５５）によって取出口（５４）を閉塞している。
【００１２】
また、前記繰出ケース（３８）下面に底蓋（５６）を着脱自在に固定させると共に、硬質合成樹脂製の前記底蓋（５６）下面に出口（５７）を形成するもので、エアタンク（４２）に前端部を嵌着させる軟質合成樹脂製の接合パイプ（５８）を備え、該パイプ（５８）後端に硬質合成樹脂製のホースジョイント（５９）前端を着脱自在に嵌着させると共に、前記ジョイント（５９）後端に前記搬送ホース（４０）を嵌着させ、前記送風機（４１）の送風をエアタンク（４２）から各パイプ（５８）…及びホース（４０）に吹出させ、底蓋（５６）の出口（５７）からジョイント（５９）中間に落下する肥料を搬送ホース（４０）に移動させるもので、Ｔ字形フランジを形成する前記ジョイント（５９）中間に入口（６０）を上向き開放に形成し、底蓋（５６）の出口（５７）に嵌合キャップ（６１）を固定させ、該キャップ（６１）を前記入口（６０）の外壁に着脱自在に嵌着させ、出口（５７）を入口（６０）に接続させている。
【００１３】
さらに、取入口（６２）を有する入口板（６４）と、同一円周上に略四角形の複数の繰出口（６５）…を有する繰出ロールである繰出板（６６）と、排出口（６７）を有する出口板（６８）を備え、略円形平板製の前記各板（６４）（６６）（６８）を繰出ケース（３８）と底蓋（５６）の間に多層状に配設させると共に、繰出ケース（３８）に繰出軸（６９）を略垂直に回転自在に軸支させ、各板（６４）（６６）（６８）の中央部に繰出軸（６９）下端側を貫通させ、出口板（６８）下面に下方側からバネ（７０）を弾圧させ、各板（６４）（６６）（６８）を下方に抜出し自在に繰出軸（６９）に支持させ、かつ閉塞レバーによって各板（６４）（６６）（６８）を繰出ケース（３８）と底蓋（５６）間に弾圧させるもので、入口板（６４）と出口板（６８）を繰出ケース（３８）に係止させ、各板（６４）（６８）に対して繰出軸（６９）を遊転させると共に、繰出板（６６）を繰出軸（６９）に係合軸支させ、繰出軸（６９）によって繰出板（６６）を強制的に回転させ、取入口（６２）から繰出口（６５）に入った肥料を排出口（６７）に移動させて出口（５７）方向に落下させるように構成している。
【００１４】
またさらに、図４、図６乃至図８にも示す如く、前記エンジン（２）出力を植付部（１５）に伝達させるＰＴＯ軸（７１）をミッションケース（４）から後方に延出させると共に、前記左支柱（４３）に軸受ケース（７２）を溶接固定させ、軸受ケース（７２）の入力軸（７３）を前記ＰＴＯ軸（７１）中間にチェン（７４）を介して連動連結させ、軸受ケース（７２）の出力軸（７５）前端部に１対のベベルギヤ（７６）を介して施肥駆動機構である縦駆動軸（７７）を略垂直に連動連結させている。
なお、前記チェン（７４）、出力軸（７５）及びベベルギヤ（７６）にて、前記ＰＴＯ軸（７１）から前記縦駆動軸（７７）の下端への第１回転伝達部を構成している。
【００１５】
また、前記縦駆動軸（７７）は図４に示す如く、背面視で左側から２組目と３組目の繰出ケース（３８）間前方に上端を臨ませて、各繰出軸（６９）に１対のベベルギヤ（７８）を介し連動連結する左右方向に長手状の繰出入力軸（７９）に、前記縦駆動軸（７７）の上端を１対のベベルギヤ（８０）・中間伝達軸（８１）・チェン（８２）を介し連動連結させて、前記ＰＴＯ軸（７１）の回転でもって入力軸（７９）を介し繰出軸（６９）を回転させて肥料の繰出しを行うように構成している。なお前記伝達軸（８１）は入力軸（７９）の前方で略同一高さ位置に略平行に配設して、前記縦駆動軸（７７）とは１対のベベルギヤ（８０）を介し、また入力軸（７９）とはチェン（８２）を介しそれぞれ連動連結して、縦駆動軸（７７）の回転を入力軸（７９）に伝達している。また、前記ベベルギヤ（８０）、中間伝達軸（８１）及びチェン（８２）にて、前記縦駆動軸（７７）の上端から繰出部３８への第２回転伝達部を構成している。
【００１６】
図９に示す如く、前記チェン（８２）のスプロケット（８２ａ）を取付ける入力軸（７９）部分を分割して短寸のスプロケット軸（７９ａ）に形成し、入力軸（７９）の接続側端に固設する円筒形継手（８３）にロールピン（８４）を介しギヤ軸（８２）両端を取外し自在に嵌合固定させるように構成している。
【００１７】
また図１０、図１１にも示す如く、前記縦駆動軸（７７）の中間に無段変速機であるリングコーン無段変速機（８５）を介設するもので、該無段変速機（８５）は入力側の下駆動軸（７７ａ）に配設される入力円板（８６）と、出力側の上駆動軸（７７ｂ）に配置される出力円板（８７）と、両板（８６）（８７）の間に配設される複数の遊星コーン（８８）と、遊星コーン（８８）の円錐面に摩擦係合する変速リング（８９）等からなり、左支柱（４３）の左外側前方に無段変速機（８５）の変速ケース（９０）を配設させ、変速ケース（９０）前端のガイド部（９１）に繰出量調節ノブ（９２）を有する調節ネジ軸（９３）を設け、該ネジ軸（９３）に前端を結合させるシフター（９４）の後端を前記変速リング（８９）に係合連結させて、調節ノブ（９２）の回動操作でシフター（９４）を介し変速リング（８９）を移動させ遊星コーン（８８）の円錐面の摩擦係合に位置を上下方向に変化させることにより、出力側の駆動軸（７７ｂ）に取出される回転を無段変速させて、繰出ケース（３８）から繰出される肥料の繰出量を適宜調節するように構成している。
【００１８】
ところで、図５、図９、図１２、図１３に示す如く、前記繰出軸（６９）の上端に固設するベベルギヤ（７８）と繰出軸（６９）との間には条止めクラッチ（９５）を介設するもので、該クラッチ（９５）は前記ベベルギヤ（７８）下位置の繰出軸（６９）をスプライン軸（６９ａ）に形成し、該スプライン軸（６９ａ）に上下摺動自在に円筒形クラッチ体（９６）を嵌合させ、対向するベベルギヤ（７８）下面とクラッチ体（９６）上面とに結合するクラッチ爪（９７）（９８）をそれぞれ一体形成すると共に、クラッチ体（９６）下面と繰出ケース（３８）間にクラッチバネ（９９）を介設して、クラッチバネ（９９）に抗しクラッチ体（９６）を下動させるときクラッチ体（９７）（９８）の結合を解除させるように構成している。
【００１９】
また、前記クラッチ体（９６）の上面外周縁部で、繰出軸（６９）を中心とした前後対向位置に上方より当接させる２つ１対のシフト軸（１００）を設け、繰出ケース（３８）に回動自在に支持するクラッチ操作軸（１０１）に揺動アーム（１０２）を介してシフト軸（１００）を連結させ、繰出ケース（３８）外側に突出させる操作軸（１０１）端に条止めレバー（１０３）下端を固設させ、各条繰出ケース（３８）の条止めレバー（１０３）上端間を条止めワイヤ（１０４）で連動連結させると共に、図３に示す如き苗載台（１６）裏側のユニットクラッチレバー（１０５）に条止めワイヤ（１０４）を連結させて、ユニットクラッチレバー（１０５）操作でもって図１２に示す如くレバー戻りバネ（１０６）に抗しワイヤ（１０４）を矢印方向に引張るとき、クラッチ爪（９７）（９８）の結合を解除させて対応する条の施肥を中止させるように構成している。
【００２０】
さらに図６、図８、図９に示す如く、前記縦駆動軸（７７）の前側及び左右両側及びチェン（８２）の上側と左右両側を覆う断面門形の保護カバー（１０７）（１０８）を、側面視逆Ｌ字状に変速ケース（９０）上方に配設して、施肥機（３６）前方のステップ（１２）上で苗や肥料の補給作業など行う作業者が、これら縦駆動軸（７７）やチェン（８２）に接触する不都合を防止するように構成している。またこの場合、従来のリンク機構及び揺動アームを用いて入力軸（７９）に回転を伝達するものに比べ、静止位置を保持する縦駆動軸（７７）によって回転を伝達させるため、保護カバー（１０７）も小形コンパクトな形状のものにできて施肥機（３６）前方のスペースを良好に拡大させることができる。
【００２１】
而して、前記縦駆動（７７）や繰出ケース（３８）より前方で略垂直に配設された構成のため、従来の如く、駆動リンクなどが繰出ケース（３８）より後方に配置されて植付部（１５）とは近接する構成に比べ、植付部（１５）より遠く離れて植付部（１５）のローリングやピッチングの発生にも関係なく、常に良好に繰出駆動力を繰出軸（６９）に伝達可能とさせて、肥料の繰出性能を安定維持させることができる。
【００２２】
また前記縦駆動軸（７７）には既存のリングコーン式など無段変速機（８５）をユニットとして容易且つコンパクトに組込んで、簡単な構成手段によって肥料の繰出量の調節も正確に行って、施肥精度を向上させることができる。
【００２３】
さらに、前記無段変速機（８５）を施肥機（３６）より前方に配置させるため、運転席（１３）位置からこの保守点検などを容易に可能とさせることができると共に、前記無段変速機（８５）を変速操作する繰出量調節ノブ（９２）を無段変速機（８５）より前方に突出させる構成のため、運転席（１３）位置からも繰出量の調節操作が極めて容易に行えて、施肥精度を向上させることができる。
【００２４】
【発明の効果】
以上実施例から明らかなように本発明は、本機の車体フレーム（３）の後端側に支柱（４３）を配置し、支柱（４３）の上端側に施肥機（３６）を配置すると共に、本機の前記施肥機（３６）よりも後方に植付部（１５）を昇降自在に装設する田植機において、前記本機下方のＰＴＯ軸（７１）と前記施肥機（３６）の繰出部（３８）とを連動連結する施肥駆動機構を、前記繰出部（３８）より前方位置に上下方向に延びるように配設した縦駆動軸（７７）と、前記ＰＴＯ軸（７１）から前記縦駆動軸（７７）の下端への第１回転伝達部としてのチェン（７４）及び出力軸（７５）及びベベルギヤ（７６）と、前記縦駆動軸（７７）の上端からその後方に位置する前記繰出部（３８）への第２回転伝達部としてのベベルギヤ（８０）及び中間伝達軸（８１）及びチェン（８２）とで構成し、前記縦駆動軸（７７）の途中に、前記繰出部（３８）の回転を変速する無段変速機（８５）を配置し、支柱（４３）の前側に無段変速機（８５）の変速ケース（９０）を配置し、変速ケース（９０）の前端側のガイド部（９１）に、繰出量調節ノブ（９２）を有する調節ネジ軸（９３）を配置し、繰出量調節ノブ（９２）の操作によって調節ネジ軸（９３）を介して無段変速機（８５）の出力回転数を変更するように構成したものであるから、繰出部（３８）から繰出される肥料の繰出量を、運転席（１３）の作業者によって簡単に調節できるものである。
【００２５】
【図面の簡単な説明】
【図１】乗用田植機の全体側面図である。
【図２】乗用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】施肥機の背面図である。
【図５】施肥機の断面側面図である。
【図６】施肥フレーム部の側面説明図である。
【図７】ベースフレーム部の背面説明図である。
【図８】無段変速部の側面説明図である。
【図９】繰出ケース部の背面説明図である。
【図１０】無段変速部の説明図である。
【図１１】無段変速機の説明図である。
【図１２】条止めクラッチ部の説明図である。
【図１３】条止めクラッチ部の説明図である。
【符号の説明】
（３）車体フレーム
（１５）植付部
（３６）施肥機
（３８）繰出ケース（繰出部）
（４３）支柱
（７１）ＰＴＯ軸
（７４）チェン
（７５）出力軸
（７６）ベベルギヤ
（７７）縦駆動軸
（８０）ベベルギヤ
（８１）中間伝達軸
（８２）チェン
（８５）無段変速機
（９０）変速ケース
（９１）変速ケース（９０）のガイド部
（９２）繰出量調節ノブ
（９３）調節ネジ軸 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice transplanter that includes a seedling stand and a planting claw and continuously performs seedling planting work, and relates to a rice transplanter that performs fertilization on the side of a planting strip.
[0002]
[Problems to be solved by the invention]
Conventionally, in a rice transplanter equipped with a fertilizer that conveys fertilizer in a fertilizer hopper with an air flow from an air supply pipe of a blower and applies fertilizer, the fertilizer is fed forward of the fertilizer feeding unit. Air supply pipes are arranged in the left-right longitudinal direction to make a good pipe connection between the air supply pipe and the feeding part, and the drive link mechanism that drives the feeding part is on the opposite side of the air feeding pipe A drive link mechanism is installed so as to avoid interference with the air supply pipe by being arranged behind the feeding portion. However, in the case of such a structure in which the drive link mechanism is arranged behind the feeding portion, in order to avoid interference when the seedling table is rolled or pitched, the vertical length of the seedling table is shortened, The length of the link connecting the planting part to the machine is increased, but in this case, there is a disadvantage that the amount of seedlings on the seedling stand is insufficient or the overall length of the machine body is increased. In addition, when maintaining the vertical length and link length of these seedling platforms, it is necessary to avoid interference with the seedling platform by lowering the support height of the fertilizer applicator or shortening the drive link. The lower the support height of the fertilizer machine, the harder it is to connect the air supply pipe and the feeding section, and the shorter the drive link, the greater the influence of backlash and dimensional accuracy, resulting in lower drive accuracy. There was inconvenience such as.
[0003]
[Means for Solving the Problems]
Therefore, according to the present invention , a support column is disposed on the rear end side of the body frame of the machine, a fertilizer is disposed on the upper end side of the support, and a planting portion is mounted on the rear side of the machine so that the planting unit can be raised and lowered. In the rice transplanter to be installed, a vertical drive shaft provided with a fertilizer drive mechanism for interlockingly connecting the PTO shaft below the machine and the feed portion of the fertilizer applicator so as to extend in the vertical direction at a position forward of the feed portion; A chain, an output shaft and a bevel gear as a first rotation transmission portion from the PTO shaft to the lower end of the vertical drive shaft, and a second rotation transmission portion from the upper end of the vertical drive shaft to the feeding portion located behind it constituted by a bevel gear and the intermediate transmission shaft and Cheng as the midway of the vertical drive shaft, wherein arranged CVT to shift the rotation of the feeding unit, the shift of the continuously variable transmission on the front side of the strut Place the case and the front end of the transmission case An adjustment screw shaft having a feed amount adjustment knob is disposed in the guide portion of the guide, and the output rotation speed of the continuously variable transmission is changed via the adjustment screw shaft by operation of the feed amount adjustment knob. Therefore, the amount of fertilizer fed from the feeding section (38) can be easily adjusted by the operator at the driver's seat (13).
[0004]
[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 passenger rice transplanter, and FIG. 2 is a plan view thereof. In FIG. A front axle case (5) for supporting the front wheel (6) for paddy field travel in front of the transmission case (4), and a rear axle case (7) connected to the rear of the gear transmission case (4), Paddy field traveling rear wheels (8) are supported on the rear axle case (7). The bonnet (9) covering the engine (2) and the like is attached to the spare seedling stage (10) on both sides, and the vehicle body cover (12) is a step in which an operator gets on the footrest (11). A mission case (4) and the like are covered, a driver's seat (13) is attached to the upper part of the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) at the rear of the bonnet (9).
[0006]
Further, in the figure, (15) is a planting part having a seedling mount (16) for six-row planting and a plurality of planting claws (17), etc. A rotary case (21) for supporting the seedling stage (16) on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable to the left and right and rotating at a constant speed in one direction. Is supported by the planting case (20), and a pair of claw cases (22) and (22) are arranged at symmetrical positions around the rotational axis of the case (21). The claw cases (22) and (22) ) Attach the planting claws (17) and (17) to the tip. A support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and travels via a link mechanism (27) including a top link (25) and a lower link (26). A support frame (24) is connected to the rear side of the vehicle (1), and an elevating cylinder (28) for raising and lowering the planting part (15) via the link mechanism (27) is connected to the lower link (26), At the same time as the front and rear wheels (6) and (8) are driven to move, the seedlings are taken out from the seedling mount (16) that slides back and forth to the left and right with the planting claws (17), and seedlings are planted continuously. Configure to do work.
[0007]
In the figure, (29) is a main shift lever, (30) is a sub-shift lever for planting raising / lowering and working travel shifting, (31) is a planting sensitivity setting device, (32) is a main clutch pedal, and (33) (33). ) Is a left and right brake pedal, (34) is a center float for leveling two strips, (35) is a side float for leveling two strips, and (36) is a side strip fertilizer that is a fertilizer for six strips. .
[0008]
Further, as shown in FIG. 3 and FIG. 4, a fertilizer hopper (37) for containing fertilizer, a fertilizer feeding case (38) which is a fertilizer feeding section for supplying a fixed amount of fertilizer, and a side crop of floats (34) (35) A turbo blower blower (41) that discharges fertilizer to the groove (39) via a flexible conveying hose (40) and an air tank (42) that is a cylindrical air supply pipe are connected to the fertilizer (36 ), A blower (41) is attached to the right end of the air tank (42), and six sets of six fertilizer feed cases (38) are arranged on the upper side of the air tank (42).
[0009]
Further, as shown in FIGS. 6 and 7, left and right base frames (45) and (45) are attached to both sides of a horizontal frame (44) that lies horizontally between the upper ends of the left and right columns (43) at the rear end of the body frame (3), A fertilizer applicator (36) is provided via the base frame (45) that is horizontally mounted in the front-rear direction, and a side stay (46) is connected between the rear end of the base frame (45) and the vehicle body frame (3). The fertilizer applicator (36) is supported by the lifting rails (47) and (48) that are erected on the front and rear of the left and right base frames (45) and (45) via the left and right bearing plates (49) and (49). Yes.
[0010]
The upper front side of the left and right bearing plates (49) (49) is integrally fixed with a round pipe-shaped horizontal frame (50), and the upper rear side is integrally fixed with a square pipe-shaped horizontal frame (51). 50 and 51 are fixedly supported by six sets of feeding cases (38), and the horizontally long air tank (42) is detachably fixed between the front sides of the left and right base frames (45) and (45).
[0011]
As shown in FIG. 5, the lower outlet (53) of the hopper (37) is fitted into the inlet (52) on the upper front side of the feeding case (38), and the lower side of the feeding case (38) is attached to the lower front side. An outlet (54) is formed, and the outlet (54) is closed by a removable cap (55).
[0012]
A bottom cover (56) is detachably fixed to the lower surface of the feeding case (38), and an outlet (57) is formed on the lower surface of the hard synthetic resin. The air tank (42) A joint pipe (58) made of a soft synthetic resin for fitting a front end portion to the front end, and a hose joint (59) made of a hard synthetic resin detachably fitted to the rear end of the pipe (58), and the joint (59) The transfer hose (40) is fitted to the rear end, and the air blown from the blower (41) is blown out from the air tank (42) to each pipe (58)... And the hose (40), and the bottom cover (56). The fertilizer that falls from the outlet (57) to the middle of the joint (59) is moved to the conveying hose (40), and the inlet (60) is opened upward in the middle of the joint (59) forming the T-shaped flange. The fitting cap (61) is fixed to the outlet (57) of the bottom lid (56), the cap (61) is detachably fitted to the outer wall of the inlet (60), and the outlet (57) is connected to the inlet ( 60).
[0013]
Furthermore, an inlet plate (64) having an intake port (62), a feeding plate (66) which is a feeding roll having a plurality of substantially square outlets (65) on the same circumference, and an outlet (67) An outlet plate (68) having a substantially circular flat plate, the plates (64), (66), (68) being arranged in a multilayer between the feeding case (38) and the bottom cover (56), A feeding shaft (69) is pivotally supported in the feeding case (38) so as to be rotatable substantially vertically, and the lower end side of the feeding shaft (69) is passed through the central portion of each plate (64) (66) (68). (68) The spring (70) is elastically pressed on the lower surface from the lower side, and the plates (64), (66), (68) are supported on the feeding shaft (69) so as to be freely pulled out downward, and each plate (64 ) (66) (68) is pressed between the feeding case (38) and the bottom cover (56). 4) The outlet plate (68) is locked to the feeding case (38), and the feeding shaft (69) is rotated with respect to the plates (64) and (68), and the feeding plate (66) is moved to the feeding shaft ( 69), the feeding plate (66) is forcibly rotated by the feeding shaft (69), and the fertilizer that has entered the feeding port (65) from the intake port (62) is moved to the discharge port (67). It is made to fall in the direction of an exit (57).
[0014]
Further, as shown in FIGS. 4 and 6 to 8, the PTO shaft (71) for transmitting the output of the engine (2) to the planting part (15) extends rearward from the mission case (4). The bearing case (72) is fixed to the left support post (43) by welding, and the input shaft (73) of the bearing case (72) is interlocked and connected to the PTO shaft (71) through a chain (74). A vertical drive shaft (77), which is a fertilization drive mechanism, is connected to the front end portion of the output shaft (75) of the case (72) via a pair of bevel gears (76) in a substantially vertical manner.
The chain (74), the output shaft (75), and the bevel gear (76) constitute a first rotation transmission portion from the PTO shaft (71) to the lower end of the vertical drive shaft (77).
[0015]
Further, as shown in FIG. 4, the vertical drive shaft (77) faces the front in front between the second and third feeding cases (38) from the left side in the rear view, and faces each feeding shaft (69). A pair of bevel gears (80) and an intermediate transmission shaft (81) are connected to a feed input shaft (79) that is elongated in the left-right direction and interlocked with each other via a pair of bevel gears (78). -It is configured such that the fertilizer is fed by being interlocked and coupled via a chain (82) and by rotating the feeding shaft (69) via the input shaft (79) by the rotation of the PTO shaft (71). The transmission shaft (81) is disposed in front of the input shaft (79) and substantially parallel to the same height position, and is connected to the longitudinal drive shaft (77) via a pair of bevel gears (80). The input shaft (79) is linked to each other via a chain (82) to transmit the rotation of the vertical drive shaft (77) to the input shaft (79). The bevel gear (80), the intermediate transmission shaft (81), and the chain (82) constitute a second rotation transmission unit from the upper end of the vertical drive shaft (77) to the feeding unit 38.
[0016]
As shown in FIG. 9, the input shaft (79) portion to which the sprocket (82a) of the chain (82) is attached is divided into a short sprocket shaft (79a), which is connected to the connection side end of the input shaft (79). Both ends of the gear shaft (82) are detachably fitted and fixed to the fixed cylindrical joint (83) via the roll pin (84).
[0017]
10 and 11, a ring cone continuously variable transmission (85), which is a continuously variable transmission, is interposed between the longitudinal drive shafts (77). The continuously variable transmission (85 ) Is an input disk (86) disposed on the lower drive shaft (77a) on the input side, an output disk (87) disposed on the upper drive shaft (77b) on the output side, and both plates (86). A plurality of planetary cones (88) disposed between (87) and a transmission ring (89) that frictionally engages the conical surface of the planetary cone (88). A transmission case (90) of the continuously variable transmission (85) is provided, and an adjustment screw shaft (93) having a feed amount adjustment knob (92) is provided on the guide portion (91) at the front end of the transmission case (90), The rear end of the shifter (94) for coupling the front end to the screw shaft (93) is engaged with the transmission ring (89). By rotating the adjustment knob (92), the speed change ring (89) is moved via the shifter (94), and the position of the planetary cone (88) is frictionally engaged with the conical surface of the planetary cone (88). The rotation taken out by the drive shaft (77b) is continuously variable, and the feed amount of the fertilizer fed from the feed case (38) is appropriately adjusted.
[0018]
By the way, as shown in FIG. 5, FIG. 9, FIG. 12, and FIG. 13, there is a locking clutch (95) between the bevel gear (78) fixed to the upper end of the feeding shaft (69) and the feeding shaft (69). The clutch (95) has a feeding shaft (69) below the bevel gear (78) formed on a spline shaft (69a), and is cylindrically slidable up and down on the spline shaft (69a). The clutch body (96) is engaged, and clutch claws (97) and (98) coupled to the lower surface of the opposed bevel gear (78) and the upper surface of the clutch body (96) are integrally formed, and the lower surface of the clutch body (96) A clutch spring (99) is interposed between the feeding cases (38) so that the clutch body (97) (98) is released when the clutch body (96) is moved downward against the clutch spring (99). It is configured.
[0019]
Further, at the outer peripheral edge of the upper surface of the clutch body (96), two pairs of shift shafts (100) are provided to be brought into contact with the front-rear facing position around the feeding shaft (69) from above, and the feeding case (38) The shift shaft (100) is connected to the clutch operation shaft (101) rotatably supported by the movement arm (102) via the swing arm (102), and the strip is formed on the end of the operation shaft (101) that protrudes outward from the feeding case (38). The lower ends of the stop levers (103) are fixed, the upper ends of the stop levers (103) of each of the feeding cases (38) are interlocked and connected by the stop wires (104), and the seedling platform (16) as shown in FIG. ) The fastening wire (104) is connected to the unit clutch lever (105) on the back side, and the wire (104) is resisted against the lever return spring (106) by the operation of the unit clutch lever (105) as shown in FIG. When pulling in the sign direction, and configured to stop the fertilization condition corresponding by releasing the coupling of the clutch pawls (97) (98).
[0020]
Further, as shown in FIGS. 6, 8, and 9, protective gates (107) and (108) each having a gate-shaped cross section covering the front side and the left and right sides of the vertical drive shaft (77) and the upper side and the left and right sides of the chain (82). An operator who arranges the seedling and fertilizer on the step (12) in front of the fertilizer applicator (36) by arranging the vertical drive shaft ( 77) and the inconvenience of contact with the chain (82). Further, in this case, since the rotation is transmitted by the vertical drive shaft (77) that holds the stationary position, compared with the conventional one that transmits the rotation to the input shaft (79) using the link mechanism and the swing arm, the protective cover ( 107) can also be made compact and compact, and the space in front of the fertilizer applicator (36) can be expanded well.
[0021]
Thus, because the vertical drive (77) and the feeding case (38) are arranged in front of the vertical drive (38), the drive link and the like are arranged behind the feeding case (38) and are planted as in the prior art. Compared to the configuration close to the attaching portion (15), the feeding drive force is always excellently provided regardless of the occurrence of rolling and pitching of the planting portion (15) far away from the planting portion (15). 69) can be transmitted, and the fertilizer feeding performance can be stably maintained.
[0022]
The vertical drive shaft (77) incorporates an existing ring cone type continuously variable transmission (85) as an easy and compact unit, and the fertilizer feed amount is accurately adjusted by simple means. , Fertilization accuracy can be improved.
[0023]
Furthermore, since the continuously variable transmission (85) is disposed in front of the fertilizer applicator (36), it is possible to easily perform maintenance and inspection from the position of the driver seat (13), and the continuously variable transmission. Since the feed amount adjustment knob (92) for shifting the speed of (85) projects forward from the continuously variable transmission (85), the feed amount adjustment operation can be performed very easily from the position of the driver seat (13). , Fertilization accuracy can be improved.
[0024]
【The invention's effect】
As is apparent from the above embodiments, the present invention has the support column (43) disposed on the rear end side of the vehicle body frame (3) of the machine and the fertilizer applicator (36) disposed on the upper end side of the support column (43). In the rice transplanter in which the planting part (15) is installed so as to be movable up and down behind the fertilizer machine (36) of the machine, the PTO shaft (71) below the machine and the fertilizer machine (36) are fed out. A fertilizer drive mechanism that interlocks and couples the portion (38) with a vertical drive shaft (77) disposed so as to extend in a vertical direction forward from the feeding portion (38) and the PTO shaft (71) to the vertical drive shaft. The chain (74), the output shaft (75), and the bevel gear (76) as a first rotation transmission unit to the lower end of the drive shaft (77), and the feed that is located behind the upper end of the vertical drive shaft (77) part as a second rotation transmitting means to (38) bevel gear (80) and intermediate Configure out with Itarujiku (81) and Chen (82), during the vertical drive shaft (77), arranged continuously variable transmission for shifting a rotation of the feeding unit (38) (85), posts ( 43) A transmission case (90) of the continuously variable transmission (85) is disposed on the front side of the transmission gear 43, and an adjustment screw shaft having a feed amount adjustment knob (92) on the guide portion (91) on the front end side of the transmission case (90). (93) is arranged, and the output rotation speed of the continuously variable transmission (85) is changed via the adjustment screw shaft (93) by operating the feed amount adjustment knob (92). The amount of fertilizer fed from the section (38) can be easily adjusted by the operator of the driver's seat (13).
[0025]
[Brief description of the drawings]
FIG. 1 is an overall side view of a riding rice transplanter.
FIG. 2 is an overall plan view of the riding rice transplanter.
FIG. 3 is a side view of a planting part.
FIG. 4 is a rear view of the fertilizer applicator.
FIG. 5 is a cross-sectional side view of a fertilizer applicator.
FIG. 6 is an explanatory side view of a fertilization frame portion.
FIG. 7 is a rear view of the base frame portion.
FIG. 8 is an explanatory side view of a continuously variable transmission unit.
FIG. 9 is a rear view of the feeding case portion.
FIG. 10 is an explanatory diagram of a continuously variable transmission.
FIG. 11 is an explanatory diagram of a continuously variable transmission.
FIG. 12 is an explanatory diagram of a hook clutch portion.
FIG. 13 is an explanatory diagram of a hooking clutch portion.
[Explanation of symbols]
(3) Body frame (15) Planting part (36) Fertilizer applicator (38) Feeding case (feeding part)
(43) Prop (71) PTO shaft
(74) Chen
(75) Output shaft
(76) Bevel gear (77) Vertical drive shaft
(80) Bevel gear
(81) Intermediate transmission shaft
(82) Chain (85) Continuously variable transmission
(90) Shift case
(91) Guide portion of transmission case (90)
(92) Feed amount adjustment knob
(93) Adjustment screw shaft

Claims

In a rice transplanter in which a post is arranged on the rear end side of the body frame of the machine, a fertilizer is arranged on the upper end side of the post, and a planting part is installed so that it can be raised and lowered behind the fertilizer of the machine. ,
A fertilizer driving mechanism for interlockingly connecting the PTO shaft below the machine and the feeding unit of the fertilizer machine is disposed so as to extend in a vertical direction to a front position from the feeding unit, and the PTO shaft Chain and output shaft and bevel gear as a first rotation transmission portion to the lower end of the vertical drive shaft, and bevel gear and intermediate transmission as a second rotation transmission portion from the upper end of the vertical drive shaft to the feeding portion located behind it Composed of shaft and chain ,
In the middle of the vertical drive shaft, a continuously variable transmission for shifting the rotation of the feeding portion is disposed,
A transmission case of the continuously variable transmission is disposed on the front side of the support column, an adjustment screw shaft having a feed amount adjustment knob is disposed on a guide portion on the front end side of the transmission case, and the operation is performed by operating the feed amount adjustment knob. A rice transplanter configured to change the output rotational speed of the continuously variable transmission via an adjustment screw shaft .