JP3998865B2

JP3998865B2 - Rice transplanter

Info

Publication number: JP3998865B2
Application number: JP19515599A
Authority: JP
Inventors: 裕一竹田; 敏夫中尾; 雄一小川
Original assignee: Yanma Agricultural Equipment Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd
Priority date: 1999-07-09
Filing date: 1999-07-09
Publication date: 2007-10-31
Anticipated expiration: 2019-07-09
Also published as: JP2001016939A

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と共に、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送風によって搬送して施肥を行う技術がある。前記従来技術は、肥料繰出部の下側に前記空気送給管を左右長手方向に配設し、空気送給管と多条用の複数の肥料繰出部を接続させると共に、空気送給管の一側端に送風機を取付けるから、送風機が機外側に位置して障害物に衝突させ易いと共に、送風機を機体内方に収納して衝突を防ぐことにより、作業後の洗車時に送風機または空気送給管の接続開口から水が入り込み易く、送風機のモータが錆びたり、湿気によって肥料が固って詰る不具合がある。また、多条用の各肥料繰出部の送風圧力を均等にするには、大径の空気送給管を用いたり、送風機の送風量を多くする必要があり、肥料を搬送する送風構造の簡略化及び小型化並びに取扱い操作性の向上などを容易に図り得ない等の問題がある。
【０００３】
【課題を解決するための手段】
請求項１に係る発明は、走行車に植付部及び施肥機を搭載し、前記施肥機の肥料繰出部よりも前方の機体中央部であって、運転席の下方の本機ステップの下面側に、施肥用送風機を設置してなる田植機において、前記肥料繰出部に前記施肥用送風機を接続する送風管の入口側の断面より、前記送風管の出口側の断面を末広がり形に大きくなるように形成し、前記施肥用送風機の吸込口及び吐出口よりも高位置に、前記施肥用送風機の送風モータを配置し、前記運転席下方の前記本機ステップ内に、前記走行車の補助車体フレームを介して前記施肥用送風機のファンケースを固定させ、前記ファンケースに前記送風モータを取付け、前記ファンケースに吸込口を下向きに開口させ、前記走行車の車体フレームに固定させたミッションケースの上面に向けて前記吸込口を開口させ、前記本機ステップの内部に、前記施肥用送風機の吸込口を配置したものであるから、前記送風機から前記肥料繰出部に肥料搬送風を安定して供給できる。前記施肥用送風機の肥料搬送風力を確保できる。また、前記吸込口の開口部の下方側を前記ミッションケースによって遮閉できるから、前記吸込口から前記ファンケース内部に水または泥土が入るのを防止でき、前記施肥用送風機の防水構造等を簡略化できるものである。
【０００４】
【０００５】
【０００６】
【０００７】
【０００８】
【０００９】
【００１０】
【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、前記ミッションケース（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。
【００１１】
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。
【００１２】
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。
【００１３】
さらに、図３、図４、図５、図６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）にフレキシブルパイプ製搬送ホース（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、中空形の肥料搬送空気送給用エアダクト（４２）とを、前記施肥部（３６）に備えると共に、運転席（１３）前側に送風機（４１）を取付け、６条分６組の肥料繰出ケース（３８）…にエアダクト（４２）を接続させている。
【００１４】
また、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）を介して施肥部（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）に縦フレーム（４７）を立設させて中央の受板（４８）と左右の受板（４９）を支持させるもので、中央及び左右受板（４８）（４９）の上部前側を丸パイプ形の前フレーム（５０）で、また上部後側を四角パイプ形の後フレーム（５１）で一体固定させて、前後フレーム（５０）（５１）に６組の繰出ケース（３８）を固定支持させる。
【００１５】
さらに、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。
【００１６】
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、前記エアダクト（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）の送風をエアダクト（４２）からホースジョイント（５９）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。
【００１７】
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、各板（６４）（６６）（６８）を下方に抜出し自在に繰出軸（６９）に支持させ、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。また、前記繰出軸（６９）にバネ製掻落し棒（７０）を固定させ、底蓋（５６）及び出口（５７）の肥料を落下させる。
【００１８】
さらに、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）を溶接またはボルト止め固定させ、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）後端部に１対のベベルギヤ（７６）を介して繰出用駆動部材である縦駆動軸（７７）を略垂直に連動連結させている。また、背面視で左側から２組目と３組目の繰出ケース（３８）間に縦駆動軸（７７）上端を臨ませ、前記繰出軸（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）を介して連動連結させる。そして、前記ＰＴＯ軸（７１）の回転によって入力軸（７９）を介して繰出軸（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。また、前記縦駆動軸（７７）の中間に無段変速機構であるリングコーン無段変速機（８１）を介設させ、前記繰出軸（６９）の回転を無段変速させ、繰出ケース（３８）から繰出される肥料の繰出量を調節するように構成している。
【００１９】
さらに、図２、図６、図７に示す如く、送風ファン（８２）を内設させるファンケース（８３）と、前記送風ファン（８２）を駆動する電動送風モータ（８４）を、前記送風機（４１）に備えるもので、前記運転席（１３）下方の車体カバー（１２）内部に補助車体フレーム（８５）を介してファンケース（８３）を固定させ、ファンケース（８３）上面に送風モータ（８４）を取付け、ファンケース（８３）下面に吸込口（８６）を下向きに開口させ、ファンケース（８３）後面に吐出口（８７）を形成し、前記エアダクト（４２）を吐出口（８７）に接続させ、運転席（１３）後方の車体カバー（１２）上面のスペースを利用してエアダクト（４２）を施肥機（３６）全幅に末広がり形に延設させる。
【００２０】
また、前後フレーム（５０）（５１）と同様に前記受板（４８）（４９）に四角パイプ形の下フレーム（８８）を一体固定させ、下フレーム（８８）に係合板（８９）を着脱自在にボルト止め固定させ、係合板（８９）の下向き開口ノッチ（９０）にホースジョイント（５９）を下方から係入させて着脱自在にボルト止め固定させ、下フレーム（８８）から係合板（８９）を取外す操作、または係合板（８９）からホースジョイント（５９）を取外す操作のいずれかにより、エアダクト（４２）から接合パイプ（５８）を抜取ってホースジョイント（５９）を底蓋（５６）から離反させ、底蓋（５６）を取外して繰出ケース（３８）の掃除などを行うように構成している。
【００２１】
また、走行車（１）の左右幅中央で運転席（１３）下方の車体カバー（１２）内部に送風機（４１）を配設させ、上下幅を略均一形成するエアダクト（４２）前部の吐出口（８７）連結部に対し、接合パイプ（５８）を接続させるエアダクト（４２）後部を平面視で末広がり形に形成し、エアダクト（４２）の前側に対して後側の断面積を連続的に大きく形成し、エアダクト（４２）の管内空気抵抗を全体が同一大きさのものに比べて小さくし、６条分の各搬送ホース（４０）への送風量が略等しくなるように構成している。さらに、送風機（４１）によるエアダクト（４２）の送風方向と、搬送ホース（４０）の肥料搬送方向を略一致させ、ホースジョイント（５９）を介して分岐ホース（４２）と搬送ホース（４０）を一直線形に接続させ、送風機（４１）の吐出口（８７）乃至ホースジョイント（５９）間の送風圧力損失の低減を図ると共に、車体カバー（１２）によって送風機（４１）上面側を遮閉させ、雨天作業時または洗車時にファンケース（８３）内に水が入るのを防いでいる。
【００２２】
また、前記エアダクト（４２）の末広がり後部両側に開閉自在な蓋（９１）を取付け、蓋（９１）を取外してエアダクト（４２）内部の掃除を行うと共に、車体フレーム（３）に固定させたミッションケース（４）上面に向けて吸込口（８６）を開口させ、吸込口（８６）開口部下方をミッションケース（４）によって遮閉させ、吸込口（８６）からファンケース（８３）内部に水または泥土が入るのを防いでいる。
【００２３】
上記から明らかなように、機体後部に施肥機（３６）を装備させる田植機において、施肥機（３６）の肥料繰出部である肥料繰出ケース（３８）よりも前方で機体中央部に施肥用送風機（４１）を設置させ、従来の機体外側設置構造のように機体内外に送風機（４１）を出入させる必要がなく、送風機（４１）の衝突防止または浸水防止を図ることなく輸送または洗車などを行えると共に、両側の肥料繰出ケース（３８）と送風機（４１）の接続距離を短縮して送風抵抗の低減並びに肥料搬送風の安定供給などを図るもので、施肥用送風機（４１）を運転席（１３）の下方に設置させ、衝突等によって損傷させる不具合、雨水または洗車水が入り込む不具合、並びに運転席（１３）回りでの作業者の移動が制限される不具合などをなくし、送風機（４１）取付け構造の簡略化並びに作業性向上などを図る。
【００２４】
また、施肥用送風機（４１）を本機ステップである車体カバー（１２）の内部に設置させ、衝突等によって損傷させる不具合、雨水または洗車水が入り込む不具合、並びに運転席（１３）回りでの作業者の移動が制限される不具合などをなくし、送風機（４１）取付け構造の簡略化並びに作業性向上などを図ると共に、肥料繰出ケース（３８）に接続させる施肥用送風機（４１）の送風管であるエアダクト（４２）を出口側の断面が末広がり形に大きくなるように形成し、前記エアダクト（４２）内部の送風抵抗を少なくして送風圧力損失を低減し、送風機（４１）の小型軽量化並びに肥料搬送風力の確保などを図る。
【００２５】
また、施肥用送風機（４１）の送風モータ（８４）を吸込口（８６）及び吐出口（８７）よりも高位置に配設させ、送風モータ（８４）と送風ファン（８２）の間に放熱間隙を形成しても送風モータ（８４）に浸水する不具合がなくなり、送風モータ（８４）の空冷構造または防水構造などの簡略化を図れると共に、施肥用送風機（４１）の吸込口（８６）を車体カバー（１２）下面側の内部に設け、吸込口（８６）の防水カバーとして車体カバー（１２）を兼用し、雨天作業時または洗車時に吸込口（８６）に水が吸込まれる不具合をなくし、雨天作業用の防水カバーを省略し、取扱い操作性の向上などを図る。また、施肥用送風機（４１）の肥料搬送風吐出方向と肥料繰出ケース（３８）からの肥料搬送方向を一致させ、従来の肥料搬送風吐出方向が機体左右方向で肥料搬送方向が機体後向きに形成された構造に比べ、送風抵抗を少なくして送風圧力損失を低減し、送風効率の向上並びに送風動力の低減などを図る。
【００２６】
さらに、図８、図９に示す如く、前記車体フレーム（３）上面と運転席（１３）下面の間に送風機（４１）を縦形に略垂直に設け、平面視で二等辺三角形状のエアダクト（４２）の頂角部に送風機（４１）の吐出口（８７）を接続させ、エアダクト（４２）の底辺部に６条分の肥料繰出ケース（３８）を配置させて各ホースジョイント（５９）を接続させるもので、エアダクト（４２）の容積を図４及び図７のものよりも大きく形成し、６条分の肥料搬送ホース（４０）の送風圧力を略均等に保つと共に、エアダクト（４２）全体を側面視で前低後高に傾斜させ、エアダクト（４２）の末広がり後側内部に肥料または埃が留まるのを防いでいる。
【００２７】
さらに、図１０、図１１に示す如く、運転席（１３）後側の車体カバー（１２）上面に送風機（４１）を設置させ、平面視山形に配置させる左右の送風管形エアダクト（４２）に６条分の肥料繰出ケース（３８）を配設させるもので、６条分のエアダクト（４２）の中間に送風機（４１）を設け、側面視で前高後低にエアダクト（４２）を傾斜させ、エアダクト（４２）前部高位置に送風機（４１）を接続させ、エアダクト（４２）後部低位置に前高後低のホースジョイント（５９）を介して搬送ホース（４０）を設け、送風機（４１）の吐出口（８７）乃至搬送ホース（４０）を側面視で略一直線形に接続させ、搬送ホース（４０）に至る送風損失を低減させる。また、図１２のように、ファンケース（８３）に左右吐出口（８７）を形成して左右エアダクト（４２）を接続させたり、図１３のように、ファンケース（８３）の吐出口（８７）に対向させてエアダクト（４２）内部に左右分配用突条形仕切（４２ａ）を形成し、６条分のエアダクト（４２）を左右３条に中央部で分割し、吐出口（８７）に近い中央寄りの搬送ホース（４０）と離れた側方の搬送ホース（４０）の送風圧力差を従来の単一エアダクト構造よりも小さくし、６条の各肥料搬送用送風圧力を均等にし、かつ送風損失を低減して送風機の小型化を図る。
【００２８】
【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、走行車（１）に植付部（１５）及び施肥機（３６）を搭載し、施肥機（３６）の肥料繰出部（３８）よりも前方の機体中央部であって、運転席（１３）の下方の本機ステップとしての車体カバー（１２）の下面側に、施肥用送風機（４１）を設置してなる田植機において、肥料繰出部（３８）に施肥用送風機（４１）を接続する送風管としてのエアダクト（４２）の入口側の断面より、エアダクト（４２）の出口側の断面を末広がり形に大きくなるように形成し、施肥用送風機（４１）の吸込口（８６）及び吐出口（８７）よりも高位置に、施肥用送風機（４１）の送風モータ（８４）を配置し、運転席（１３）の下方の車体カバー（１２）内に、走行車（１）の補助車体フレーム（８５）を介して施肥用送風機（４１）のファンケース（８３）を固定させ、ファンケース（８３）に送風モータ（８４）を取付け、ファンケース（８３）に吸込口（８６）を下向きに開口させ、走行車（１）の車体フレーム（３）に固定させたミッションケース（４）の上面に向けて吸込口（８６）を開口させ、車体カバー（１２）の内部に、施肥用送風機（４１）の吸込口（８６）を配置したものであるから、施肥用送風機（４１）から肥料繰出部（３８）に肥料搬送風を安定して供給できる。施肥用送風機（４１）の肥料搬送風力を確保できる。また、吸込口（８６）の開口部の下方側をミッションケース（４）によって遮閉できるから、吸込口（８６）からファンケース（８３）内部に水または泥土が入るのを防止でき、施肥用送風機（４１）の防水構造等を簡略化できるものである。
【００２９】
【００３０】
【００３１】
【００３２】
【００３３】
【００３４】
【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】施肥部の平面図である。
【図５】施肥部の背面図である。
【図６】施肥部の断面側面図である。
【図７】施肥機の側面説明図である。
【図８】図４の変形例を示す平面図である。
【図９】同側面説明図である。
【図１０】図４の他の変形例を示す平面図である。
【図１１】同側面図である。
【図１２】同送風機部の説明図である。
【図１３】同送風機部の説明図である。
【符号の説明】
（１）走行車
（３）車体フレーム
（４）ミッションケース
（１２）車体カバー（本機ステップ）
（１３）運転席
（１５）植付部
（３６）施肥機
（３８）繰出ケース（肥料繰出部）
（４１）施肥用送風機
（４２）エアダクト（送風管）
（８３）ファンケース
（８４）送風モータ
（８５）補助車体フレーム
（８６）吸込口
（８７）吐出口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice transplanter that includes a seedling stage and a planting claw to perform seedling planting work continuously and fertilize the side of a planting strip.
[0002]
[Problems to be solved by the invention]
Conventionally, there is a technique for applying fertilizer by conveying fertilizer in a fertilizer hopper by blowing air from an air supply pipe of a blower. In the prior art, the air supply pipe is arranged in the left and right longitudinal direction below the fertilizer feed section, and the air feed pipe and a plurality of fertilizer feed sections for multiple strips are connected together. Since the blower is installed at one end, the blower is located on the outside of the machine so that it can easily collide with obstacles. There is a problem that water can easily enter from the connection opening of the pipe, the motor of the blower is rusted, and the fertilizer is hardened and clogged by moisture. In addition, in order to equalize the blowing pressure of each fertilizer feed section for multiple strips, it is necessary to use a large-diameter air supply pipe or increase the amount of air blown from the blower. There is a problem that it is not possible to easily achieve downsizing, downsizing, and handling operability.
[0003]
[Means for Solving the Problems]
The invention according to claim 1 includes a planting unit and a fertilizer applicator mounted on a traveling vehicle, the machine body central portion in front of the fertilizer supply portion of the fertilizer applicator, and the lower surface side of the main unit step below the driver's seat , in rice transplanters made by installing a fertilizer blower, the inlet side of the cross-section of the blower tube connecting the fertilizer blower in the fertilizer feeding unit, so that a large outlet side of the cross section of the blower tube flared shape formed in, a position higher than the suction port and discharge port of the fertilizer blower, the blower motor of the fertilizer blower arranged, in said handset step of the driver's seat lower auxiliary body frame of the vehicle The fan case of the fertilizer application fan is fixed via the fan case, the fan motor is attached to the fan case, the suction opening is opened downward in the fan case, and the upper part of the transmission case is fixed to the vehicle body frame of the traveling vehicle. Wherein the suction port is opened, the inside of the camcorder step, since it is obtained by placing the inlet of the fertilizer blower, a fertilizer carrier air to the manure feeding unit from the blower can be supplied stably toward the . The fertilizer conveyance wind power of the said fertilizer fan can be ensured. In addition, since the lower side of the opening of the suction port can be blocked by the mission case, water or mud can be prevented from entering the fan case from the suction port, and the waterproof structure of the fertilizer blower can be simplified. It can be made.
[0004]
[0005]
[0006]
[0007]
[0008]
[0009]
[0010]
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 the figure, (1) is a traveling vehicle on which an operator is boarded, and an engine (2) is mounted on the upper part of the front of the body frame (3) A front axle case (5) is supported in front of the transmission case (4) via a front axle case (5), and a rear axle case (7) is connected to the rear of the transmission case (4). The rear wheel case (7) is supported by 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).
[0011]
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.
[0012]
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 fertilizer for six strips.
[0013]
Furthermore, as shown in FIG. 3, FIG. 4, FIG. 5, FIG. 6, a fertilizer feeding hopper (37) for putting fertilizer, a fertilizer feeding case (38) which is a fertilizer feeding section for supplying a fixed amount of fertilizer, and a float (34) ( 35) a turbo blower type blower (41) for discharging fertilizer through a flexible pipe transport hose (40) to a side groove grooving device (39), a hollow fertilizer transport air supply air duct (42), Are provided in the fertilizer section (36), a blower (41) is attached to the front side of the driver's seat (13), and the air duct (42) is connected to six sets of fertilizer feed cases (38) for six strips.
[0014]
In addition, left and right base frames (45) and (45) are attached to both sides of the horizontal frame (44) that is horizontally mounted between the upper ends of the left and right support columns (43) at the rear end of the vehicle body frame (3), and horizontally mounted in the front-rear direction. A fertilizer (36) is provided via the base frame (45), and a side stay (46) is connected between the rear end of the base frame (45) and the vehicle body frame (3), so that the left and right base frames (45) ( The vertical frame (47) is erected on 45) to support the center receiving plate (48) and the left and right receiving plates (49). The center and the upper front side of the left and right receiving plates (48) (49) are rounded. The pipe-shaped front frame (50) and the upper rear side are integrally fixed with a square pipe-shaped rear frame (51), and six sets of feeding cases (38) are fixedly supported on the front and rear frames (50) (51). Let
[0015]
Further, 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 outlet (54) is placed below the front surface of the feeding case (38). The outlet (54) is closed by a detachable cap (55).
[0016]
The bottom cover (56) is detachably fixed to the lower surface of the feeding case (38), and the outlet (57) is formed on the lower surface of the hard synthetic resin bottom cover (56). The air duct (42 ) Is provided with a soft synthetic resin joining pipe (58) to which the front end portion is fitted, and a hard synthetic resin hose joint (59) front end is detachably fitted to the rear end of the pipe (58). The conveying hose (40) is fitted to the rear end of the joint (59), and the air blown from the blower (41) is blown out from the air duct (42) to the hose joint (59) 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 directed upward to 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).
[0017]
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 on the feeding case (38) so as to be substantially vertically rotatable, and the lower end side of the feeding shaft (69) is passed through the center of each plate (64) (66) (68). (64) (66) (68) is supported on the feeding shaft (69) so that it can be pulled out downward, and each plate (64) (66) (68) is elastically pressed between the feeding case (38) and the bottom lid (56). The inlet plate (64) and the outlet plate (68) are locked to the feeding case (38), and each plate (64) (68) Then, the feeding shaft (69) is rotated freely, the feeding plate (66) is engaged with the feeding shaft (69) and the feeding plate (66) is forcibly rotated by the feeding shaft (69). The fertilizer that has entered the feeding outlet (65) from the inlet (62) is moved to the outlet (67) and dropped in the direction of the outlet (57). Further, the spring scraper bar (70) is fixed to the feeding shaft (69), and the fertilizer at the bottom lid (56) and the outlet (57) is dropped.
[0018]
Further, the PTO shaft (71) for transmitting the output of the engine (2) to the planting part (15) is extended rearward from the transmission case (4), and the bearing case (72) is attached to the left column (43). After fixing by welding or bolting, the input shaft (73) of the bearing case (72) is linked to the PTO shaft (71) in the middle via the chain (74), and after the output shaft (75) of the bearing case (72). A vertical drive shaft (77), which is a drive member for feeding, is interlocked and connected to the end portion through a pair of bevel gears (76) substantially vertically. In addition, when viewed from the rear, the upper end of the longitudinal drive shaft (77) faces between the second and third feeding cases (38) from the left side, and is linked to the feeding shaft (69) via a pair of bevel gears (78). The upper end of the vertical drive shaft (77) is interlocked and connected to a feed input shaft (79) that is elongated in the left-right direction via a pair of bevel gears (80). The fertilizer is fed by rotating the feeding shaft (69) via the input shaft (79) by the rotation of the PTO shaft (71). Further, a ring cone continuously variable transmission (81), which is a continuously variable transmission mechanism, is interposed in the middle of the vertical drive shaft (77), and the rotation of the supply shaft (69) is continuously variable, so that a supply case (38 ) Is adjusted so that the amount of fertilizer paid out is adjusted.
[0019]
Further, as shown in FIGS. 2, 6, and 7, a fan case (83) in which a blower fan (82) is installed and an electric blower motor (84) that drives the blower fan (82) are connected to the blower ( 41), a fan case (83) is fixed to the inside of the vehicle body cover (12) below the driver seat (13) via an auxiliary vehicle body frame (85), and a fan motor (83) is mounted on the upper surface of the fan case (83). 84), the suction port (86) is opened downward on the lower surface of the fan case (83), the discharge port (87) is formed on the rear surface of the fan case (83), and the air duct (42) is connected to the discharge port (87). The air duct (42) is extended to the full width of the fertilizer applicator (36) using the space on the upper surface of the vehicle body cover (12) behind the driver seat (13).
[0020]
Similarly to the front and rear frames (50) and (51), a rectangular pipe-shaped lower frame (88) is integrally fixed to the receiving plates (48) and (49), and an engagement plate (89) is attached to and detached from the lower frame (88). The hose joint (59) is engaged with the downward opening notch (90) of the engagement plate (89) from below, and is detachably bolted to the engagement plate (89). ) Or the operation of removing the hose joint (59) from the engagement plate (89), the joining pipe (58) is removed from the air duct (42), and the hose joint (59) is removed from the bottom lid (56). The bottom cover (56) is removed and the feeding case (38) is cleaned.
[0021]
In addition, a blower (41) is disposed inside the vehicle body cover (12) below the driver's seat (13) at the center of the left and right width of the traveling vehicle (1), and the air duct (42) front portion that forms a substantially uniform vertical width is discharged. The rear part of the air duct (42) for connecting the joining pipe (58) to the outlet (87) coupling part is formed in a divergent shape in a plan view, and the rear cross-sectional area is continuously set with respect to the front side of the air duct (42). The air duct (42) has a large air resistance in the pipe as compared to the same size as the whole, and is configured so that the amount of air blown to the respective conveying hoses (40) for the six strips is substantially equal. . Further, the air blowing direction of the air duct (42) by the blower (41) and the fertilizer conveying direction of the transfer hose (40) are substantially matched, and the branch hose (42) and the transfer hose (40) are connected via the hose joint (59). It is connected in a straight line, and while reducing the blowing pressure loss between the discharge port (87) and the hose joint (59) of the blower (41), the upper surface side of the blower (41) is closed by the vehicle body cover (12), Water is prevented from entering the fan case (83) during rainy work or car washing.
[0022]
Further, a lid (91) that can be opened and closed is attached to both sides of the rear end of the air duct (42), and the lid (91) is removed to clean the inside of the air duct (42), and the mission is fixed to the vehicle body frame (3). The suction port (86) is opened toward the upper surface of the case (4), the lower part of the opening of the suction port (86) is blocked by the mission case (4), and water is introduced from the suction port (86) into the fan case (83). Or it prevents mud from entering.
[0023]
As is clear from the above, in the rice transplanter equipped with a fertilizer applicator (36) at the rear part of the machine body, a fertilizer fan for fertilizer application in the center of the machine body ahead of the fertilizer feed case (38) which is a fertilizer feed part of the fertilizer machine (36) (41) is installed, and there is no need to allow the blower (41) to go in and out of the fuselage unlike the conventional outer structure of the fuselage, and transport or car washing can be performed without preventing the blower (41) from colliding or preventing flooding. At the same time, the connection distance between the fertilizer feeding case (38) and the blower (41) on both sides is shortened to reduce the blowing resistance and to stably supply the fertilizer conveying wind. ) To eliminate damages caused by collisions, rainwater or car wash water, and restrictions on the movement of workers around the driver's seat (13). Machine (41) achieve such simplification and improving workability of the mounting structure.
[0024]
In addition, the fertilizer blower (41) is installed inside the body cover (12), which is the main unit step, so that it can be damaged by a collision or the like, rain water or car wash water enters, and work around the driver's seat (13). This is a blower pipe for a fertilizer application fan (41) to be connected to the fertilizer feeding case (38) while eliminating the problem of restricting the movement of the person and simplifying the fan (41) mounting structure and improving workability. The air duct (42) is formed so that the cross section on the outlet side is widened toward the end, the blowing resistance inside the air duct (42) is reduced to reduce blowing pressure loss, and the fan (41) is reduced in size and weight and fertilizer. Secure transport wind power.
[0025]
Further, the fan motor (84) of the fertilizer application fan (41) is disposed higher than the suction port (86) and the discharge port (87), and heat is radiated between the fan motor (84) and the fan (82). Even if the gap is formed, there is no problem that the blower motor (84) is submerged, the air cooling structure or the waterproof structure of the blower motor (84) can be simplified, and the suction port (86) of the fertilizer blower (41) can be provided. The body cover (12) is provided inside the lower surface of the body cover, and serves as a waterproof cover for the suction port (86). The body cover (12) is also used to eliminate the problem of water being sucked into the suction port (86) during rainy weather work or car washing. The waterproof cover for rainy weather work is omitted to improve handling operability. Moreover, the fertilizer conveyance wind discharge direction of the fertilizer application fan (41) and the fertilizer conveyance direction from the fertilizer feeding case (38) are made to coincide, and the conventional fertilizer conveyance wind discharge direction is formed in the left-right direction of the machine and the fertilizer transfer direction is formed in the rear direction of the machine. Compared to the structure, the blowing resistance is reduced to reduce the blowing pressure loss, thereby improving the blowing efficiency and reducing the blowing power.
[0026]
Further, as shown in FIGS. 8 and 9, a blower (41) is provided vertically between the upper surface of the vehicle body frame (3) and the lower surface of the driver's seat (13) so that the air duct has an isosceles triangle shape in plan view ( 42) The discharge port (87) of the blower (41) is connected to the apex portion of the air blower (41), and the fertilizer feed case (38) for six strips is arranged on the bottom side of the air duct (42) to connect each hose joint (59). The volume of the air duct (42) is made larger than that of FIGS. 4 and 7, and the air pressure of the fertilizer transfer hose (40) for the six strips is kept substantially uniform, and the entire air duct (42) is connected. Is inclined to the front low and high in a side view to prevent the fertilizer or dust from staying in the rear side of the air duct (42).
[0027]
Further, as shown in FIGS. 10 and 11, the blower (41) is installed on the upper surface of the vehicle body cover (12) on the rear side of the driver's seat (13), and left and right air ducts (42) are arranged in a mountain shape in plan view. A fertilizer feed case (38) for 6 strips is arranged. A blower (41) is provided in the middle of the air duct (42) for 6 strips, and the air duct (42) is inclined in front and rear and low in a side view. The blower (41) is connected to the front high position of the air duct (42), and the transfer hose (40) is provided to the rear low position of the air duct (42) via the hose joint (59). ) Discharge port (87) to conveying hose (40) are connected in a substantially straight line in a side view, and air loss to the conveying hose (40) is reduced. Further, as shown in FIG. 12, left and right discharge ports (87) are formed in the fan case (83) to connect the left and right air ducts (42), or the discharge port (87) of the fan case (83) is connected as shown in FIG. ) Is formed in the air duct (42) so as to face the right and left distribution ribs (42a), and the six air ducts (42) are divided into three right and left at the central portion, and the discharge port (87). The difference between the air pressure of the near-center-side transfer hose (40) and the remote side transfer hose (40) is made smaller than that of the conventional single air duct structure, and the air pressure for each fertilizer transfer of 6 items is made equal, and Reduce the blower loss and reduce the size of the blower.
[0028]
【The invention's effect】
As is apparent from the above embodiments, the invention according to claim 1 includes a planting part (15) and a fertilizer applicator (36) mounted on a traveling vehicle (1), and a fertilizer feed part (38) of the fertilizer applicator (36). In the rice transplanter in which the fertilizer blower (41) is installed on the lower surface side of the vehicle body cover (12) as the main unit step below the driver's seat (13) in the center of the machine body ahead of The cross section on the outlet side of the air duct (42) is formed so as to be wider from the cross section on the inlet side of the air duct (42) as a blow pipe connecting the fertilizer feeding fan (41) to the fertilizer feed section (38). The fan motor (84) of the fertilizer blower (41) is disposed at a position higher than the suction port (86) and the discharge port (87) of the fertilizer blower (41), and the vehicle body below the driver seat (13). In the cover (12), the auxiliary body frame (1) of the traveling vehicle (1) 5), the fan case (83) of the fan for fertilizer application (41) is fixed, the fan motor (84) is attached to the fan case (83), and the suction port (86) is opened downward in the fan case (83). The suction port (86) is opened toward the upper surface of the transmission case (4) fixed to the vehicle body frame (3) of the traveling vehicle (1), and the fertilizer blower (41) is provided inside the vehicle body cover (12). ), The fertilizer conveying air can be stably supplied from the fertilizer application fan (41) to the fertilizer feeding section (38). The fertilizer conveyance wind power of the fan for fertilizer application (41) can be secured. Moreover, since the lower side of the opening of the suction port (86) can be blocked by the mission case (4), it is possible to prevent water or mud from entering the fan case (83) from the suction port (86) . The waterproof structure of the blower (41) can be simplified.
[0029]
[0030]
[0031]
[0032]
[0033]
[0034]
[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 plan view of a fertilizer application part.
FIG. 5 is a rear view of a fertilizer application part.
FIG. 6 is a cross-sectional side view of a fertilizer application part.
FIG. 7 is a side view of the fertilizer applicator.
FIG. 8 is a plan view showing a modification of FIG.
FIG. 9 is an explanatory view of the same side.
10 is a plan view showing another modification of FIG. 4. FIG.
FIG. 11 is a side view of the same.
FIG. 12 is an explanatory diagram of the blower unit.
FIG. 13 is an explanatory diagram of the blower unit.
[Explanation of symbols]
(1) Traveling vehicle
(3) Body frame
(4) Mission case (12) Body cover (this machine step)
(13) Driver's seat (15) Planting part (36) Fertilizer applicator (38) Feeding case (fertilizer feeding part)
(41) Blower for fertilizer application (42) Air duct (blower pipe)
(83) Fan case (84) Blower motor
(85) Auxiliary body frame (86) Suction port (87) Discharge port

Claims

A planting part and a fertilizer machine are mounted on the traveling vehicle, and a fertilizer fan is installed in the center of the machine body in front of the fertilizer feed part of the fertilizer machine and on the lower surface side of the main unit step below the driver's seat. In the rice transplanter
From the cross section on the inlet side of the blower pipe connecting the fertilizer feeding fan to the fertilizer feed section, the cross section on the outlet side of the blower pipe is formed so as to be enlarged in a divergent shape ,
Arrange the blower motor of the fertilizer blower at a position higher than the suction port and discharge port of the fertilizer blower,
A fan case of the fertilizer blower is fixed through the auxiliary body frame of the traveling vehicle in the machine step below the driver's seat, the fan motor is attached to the fan case, and a suction port is provided in the fan case. Open downward,
A rice transplanter characterized in that the suction port is opened toward the upper surface of a transmission case fixed to the vehicle body frame of the traveling vehicle, and the suction port of the fertilizer blower is arranged inside the main unit step.