JP3891951B2

JP3891951B2 - Rice fertilizer application equipment

Info

Publication number: JP3891951B2
Application number: JP2003088498A
Authority: JP
Inventors: 義昭園田; 哲也松村
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2003-03-27
Filing date: 2003-03-27
Publication date: 2007-03-14
Anticipated expiration: 2023-03-27
Also published as: JP2004290110A

Description

【０００１】
【発明の属する技術分野】
本発明は、肥料繰り出しロールを回転操作する往復回動自在な操作部材、駆動自在なクランク体の回転駆動力を往復動力に変換して前記操作部材に伝達する連動杆を備えている田植機用施肥装置に関する。
【０００２】
【従来の技術】
上記施肥装置において、従来、たとえば特許文献１に示されるように、肥料繰り出しロールを回転操作する往復回動自在な操作部材としての入力側回転体３１ａに、この入力側回転体３１ａの半径方向に並ぶ複数の連結孔３１ｂを設け、この複数の連結孔３１ｂから選択した一つに連動杆としての出力杆３９を連結することにより、入力側回転体３１ａの出力杆作用位置が入力側回転体３１ａの半径方向に変化し、入力側回転体３１ａが出力杆３９によって往復回動される回転角が変化して肥料繰り出しロールによる繰り出し量が変化するようになったものがあった。
【０００３】
【特許文献１】
特開２００２−８４８２５号公報（段落番号〔００４２〕、〔００４３〕、図４、図７）
【０００４】
【発明が解決しようとする課題】
上記した従来の調節技術を採用して繰り出し量調節を可能にした場合、繰り出し量を所望量に精度よく調節できなくなるとか、繰り出し量を大幅に変更する際に必要な調節手間が大になっていた。
すなわち、従来の調節技術では、操作部材の連動杆が作用する位置を一つの変更手段によって変更するものだから、操作部材の半径方向に並ぶ複数の連動杆連結位置の間隔を比較的大きな間隔にして、操作部材の連動杆作用位置を大調節ピッチで迅速に変更調節できるようにすると、操作部材の連動杆作用位置を小調節ピッチで変更できなくて繰り出し量の微調節ができず、繰り出し量が所望量にならない場合が発生していた。
これに対し、操作部材の連動杆が連結する位置をネジ送りなどによって変更調節できるようにし、操作部材の連動杆作用位置を小調節ピッチで変更して繰り出し量を微細に調節できるようにすると、繰り出し量の変更幅が大きい調節を行なう際、連動杆が操作部材に対して大幅に移動するように調節ネジを数多く回転操作するなど、多くの調節手間が掛かっていた。
【０００５】
本発明の目的は、操作部材の連動杆作用位置を変更して繰り出し量調節を行なうものでありながら適切な調節が能率よく行なえる田植機用施肥装置を提供することにある。
【０００６】
【課題を解決するための手段】
請求項１による発明の構成、作用、効果はつぎのとおりである。
【０００７】
〔構成〕
肥料繰り出しロールを回転操作する往復回動自在な操作部材、駆動自在なクランク体の回転駆動力を往復動力に変換して前記操作部材に伝達する連動杆を備えている田植機用施肥装置において、前記操作部材と前記連動杆の間に介在して操作部材と連動杆を連動させる操作部材側連結部材および連動杆側連結部材を備え、前記操作部材側連結部材を前記操作部材に対して操作部材の半径方向に大調節ピッチで位置変更調節自在に連結する粗調節機構、および、前記連動杆側連結部材を前記操作部材側連結部材に対して前記操作部材の半径方向に小調節ピッチで位置変更調節自在に連結して前記操作部材側連結部材の連動杆連結位置を操作部材の半径方向に変更する微調節機構を備えてある。
【０００８】
〔作用〕
連動杆が操作部材に対して操作部材側連結部材および連動杆側連結部材を介して連結し、連動杆の往復動力が連動杆側連結部材および操作部材側連結部材を介して操作部材に作用するものである。粗調節機構を操作すると、操作部材側連結部材が操作部材に対して大調節ピッチで移動して、操作部材の操作部材側連結部材が連結する位置が操作部材の半径方向に大調節ピッチで変化する。微調節機構を操作すると、連動杆側連結部材が操作部材側連結部材に対して小調節ピッチで移動して、操作部材側連結部材の連動杆が連結する位置が操作部材の半径方向に小調節ピッチで変化するものである。
【０００９】
これにより、粗調節機構を操作すると、操作部材の連動杆が作用する位置が操作部材の半径方向に大調節ピッチで変化して操作部材が連動杆によって往復回動操作される回動角が比較的大きな変化幅で変化し、繰り出しロールが操作部材の往復回動によって操作される回転角が比較的大きな変化幅で変化して、肥料繰り出しロールが単位時間当たりに繰り出す肥料の量が比較的大きい変化幅で変化する。
【００１０】
微調節機構を操作すると、操作部材の連動杆が作用する位置が操作部材の半径方向に小調節ピッチで変化して操作部材が連動杆によって往復回動操作される回動角が比較的小さな変化幅で変化し、繰り出しロールが操作部材の往復回動によって操作される回転角が比較的小さな変化幅で変化して、肥料繰り出しロールが単位時間当たりに繰り出す肥料の量が比較的小さい変化幅で変化する。このとき、粗調節機構の操作も併せて行なうと、この粗調節機構によって決まる繰り出し量が基準繰り出し量となり、この基準繰り出し量から小さい幅で変化した繰り出し量が実際の繰り出し量になる。すなわち、微調節機構と粗調節機構の両調節機構を併せて操作することにより、微調節機構による微調節の効く範囲が、微調節機構のみを操作する場合のその範囲より広くなる。
【００１１】
〔効果〕
従って、粗調節機構と微調節機構を適切に操作することにより、操作部材の連動杆が作用する位置を大調節ピッチや小調節ピッチで変更したり、小調節ピッチによる変更が効く範囲を広くして繰り出し量を所望量に精度よくなるように調節できる。しかも、微調節機構だけで調節するように構成した場合に比し、所望の変更幅が大きいときの連動杆の大幅な移動調節を粗調節機構によって迅速に行なうことができ、全体としては少ない調節手間で能率よくできる。
【００１２】
請求項２による発明の構成、作用、効果はつぎのとおりである。
【００１３】
〔構成〕
請求項１による発明の構成において、前記粗調節機構に、前記操作部材側連結部材を操作部材に対して締め付け固定するロック具を備えるとともに、前記ロック具のロック操作によって前記微調節機構の調節ネジが回り止めストッパーに当て付け固定されるように構成してある。
【００１４】
〔作用〕
操作部材側連結部材の位置調節を行なった後、ロック具を操作して操作部材側連結部材を操作部材に締め付け固定すると、このときのロック具の操作によって微調節機構の調節ネジが回り止めストッパーに当て付けて固定されるものである。これにより、操作部材側連結部材を固定するロック操作を行なうことによって調節ネジの回り止め固定も一挙に行なえる。
【００１５】
〔効果〕
従って、繰り出し量の変更調節を行なうと、操作部材側連結部材を操作部材に、連動杆側連結部材を操作部材側連結部材にそれぞれ固定して施肥装置の駆動を可能にするのであるが、ロック具による操作部材側連結部材の固定と、調節ネジの回り止めによる連動杆側連結部材の固定を一挙に行なって、施肥装置を駆動可能な状態に操作簡単にできる。
【００１６】
請求項３による発明の構成、作用、効果はつぎのとおりである。
【００１７】
〔構成〕
請求項１又は２による発明の構成において、前記クランク体に、前記連動杆の連結位置をクランク体回動軸芯に対して遠近方向に変更する駆動ピッチ調節機構を備えてある。
【００１８】
〔作用〕
駆動ピッチ調節機構を操作すると、クランク体の連動杆連結位置がクランク体回動軸芯に対して遠近方向に変化し、連動杆がクランク体によって駆動されるストロークが変化し、操作部材が連動杆によって往復回動操作される回動角が変化するものである。これにより、駆動ピッチ調節機構を操作すると、操作部材の往復回動によって操作される繰り出しロールの回転角が変化し、肥料繰り出しロールが単位時間当たりに繰り出す肥料の量が変化する。
【００１９】
〔効果〕
従って、粗調節機構や微調節機構だけを操作して肥料の繰り出し量を調節するよりも、駆動ピッチ調節機構も併せて操作することによってさらに広い調節範囲にわたって調節でき、単位面積当たりの散布量を広い調節範囲にわたって調節するとか、単位面積当たりに散布するべき量が異なる数多くの種類の肥料を使用することができる。
【００２０】
【発明の実施の形態】
図１，２に示すように、左右一対の操向操作および駆動自在な前車輪１、左右一対の駆動自在な後車輪２、エンジン１１を有した原動部１０の両横側方に位置する予備苗収容装置３、運転座席４を有した運転部を備えた自走車体の車体フレーム５の後部に、リフトシリンダ７を備えたリンク機構６を介して苗植付装置２０を連結するとともに、前記エンジン１１からの駆動力を、回転軸８を介して苗植付装置２０に伝達するように構成し、自走車体の運転座席４の後側近くに、肥料タンク３１が付いている施肥装置３０を設けて、施肥装置付きの乗用型田植機を構成してある。
【００２１】
すなわち、リフトシリンダ７を操作すると、このリフトシリンダ７がリンク機構６を車体フレーム５に対して上下に揺動操作することにより、苗植付装置２０を接地フロート２１が圃場面上に接地した下降作業状態と、接地フロート２１が圃場面から上方に高く上昇した非作業状態とに昇降操作するようになっている。苗植付装置２０を下降作業状態にして自走車体を走行させると、苗植付装置２０の機体横方向に並んでいる複数個の苗植付機構２２が、この苗植付機構２２の苗植え運動に連動して機体横方向に往復移送される苗載せ台２５に載置されているマット状苗の下端部から一株分のブロック苗を切断して取り出し、圃場面に下降して植付けていくようになっている。これとともに、施肥装置３０により、肥料タンク３１に貯留されている粒状の肥料を各苗植付機構２２による植付け苗の横側近くで圃場に供給していくようになっている。
【００２２】
図１，３に示すように、施肥装置３０は、車体フレーム５の左右一対のメインフレーム５ａに左右一対のブロワ支持板１２、支柱１３などを介して連結している施肥フレーム１４の車体横方向での複数箇所に取付けた肥料繰り出し装置４０、この複数個の肥料繰り出し装置４０の上端部に対して複数の漏斗型底部が各別に連通している前記肥料タンク３１、前記複数個の肥料繰り出し装置４０それぞれの下部に位置する左右一対の車体後方向きの肥料送出筒４１の両方又は一方から苗植付装置２０まで延出している肥料供給管路３２、エンジン１１からの駆動力を後輪伝動ケース９に伝達するように自走車体に設けた回転軸１５の駆動力によって各肥料繰り出し装置４０を駆動する繰り出し駆動装置７０を備えて構成してある。
【００２３】
図１に示すように、前記複数の肥料供給管路３２の苗植付装置２０に至っている端部は、各苗植付機構２２による苗植付け箇所の横側付近に一個ずつ位置するように配置して接地フロート２１に取付けた複数個の作溝施肥具２６に各別に連通させてある。各肥料供給管路３２は、苗植付装置２０が昇降されるに伴って屈曲して苗植付装置２０の昇降を可能にするように可撓性を備えた樹脂ホース３２ａ、この樹脂ホース３２ａを作溝施肥具２６に接続している樹脂管で成る肥料供給管３２ｂを備えて構成してある。
【００２４】
図３，４，５などに示すように、前記複数の肥料繰り出し装置４０それぞれの下部に位置する左右一対の車体前方向きの搬送風供給口４８に対して連通している車体横向きの１本の送風管５０、この送風管５０の長手方向での中央部に吐出部５４ｂが連通するように構成して前記左右一対のブロワ支持板１２にわたって支持させた電動ブロワ５４、この電動ブロワ５４の車体横外向きの吸気部５４ａに対して接続ダクト５６によって基端側が接続し、先端側が原動部１０に位置している吸気ダクト５５を備えて搬送風供給装置を構成してある。
【００２５】
吸気ダクト５５は、車体側面視で先端側がほぼ水平になり、基端側が車体後方側に至るほど高レベルに位置する後上がり傾斜になるように、かつ、車体上下方向視で基端側が車体前後方向に沿い、先端側が車体前方側に至るほど車体横外側に位置する前横外向き傾斜になるように屈曲成形した樹脂製の円形管で構成し、運転部床の下方を車体前後方向に通るように配置して、かつ、基端側の開口が前記接続ダクト５６によって前記ブロワ５４の吸気部５４ａに連通されるようにして、さらに、先端側の吸気口５５ａがブロワ５４の吸気部５４ａの配置レベルより低い配置レベルに位置するようにして車体フレーム５に組み付けてある。吸気ダクト５５の前記吸気口５５ａは、原動部１０に位置するエンジン排気マフラー１１ａの車体後側の近くに車体内向きに開口するようにして配置してある。この吸気ダクト５５の吸気口５５ａは、さらに、エンジン１１の後方に位置している静油圧式無段変速装置１６が備えている冷却ファン１７の風下側にその静油圧式無段変速装置１６に向かって開口するようにして配置してある。
【００２６】
前記静油圧式無段変速装置１６は、エンジン１１の出力軸に対して伝動ベルト１８を介して入力軸１６ａが連動している可変容量形のアキシャルプランジャ形油圧ポンプ（図示せず）、および、この油圧ポンプからの圧油によって駆動される油圧モータ（図示せず）を備えて成り、エンジン１１からの駆動力を前進側と後進側に切り換えて、前進側においても後進側においても無段階に変速してミッションケース１９の内部に位置する走行用ミッション（図示せず）に伝達してこの走行用ミッションから前後輪１，２に伝達するようになっている。また、前記入力軸１６ａに一体回動自在に付いている前記冷却ファン１７は、無段変速装置１６のケーシングを車体横方向に沿って吸気ダクト５５の前記吸気口５５ａの方に向けて流れる冷却風を発生させることにより、無段変速装置１６の空冷を図るようになっている。
【００２７】
これにより、搬送風供給装置は、エンジン排気マフラー１１ａのために温度上昇した空気、静油圧式無段変速装置１６のために温度上昇した空気を、冷却ファン１７による送風力を送り込みに利用して、この送り込みと、ブロワ５４による吸引力とによって、吸気ダクト５５の吸気口５５ａの付近に位置する空気と混合させながら吸気ダクト５５に取り込んでこの吸気ダクト５５からブロワ５４に吸引させ、このブロワ５４によって常温の空気よりも温度が高い肥料搬送風を発生させ、この肥料搬送風を吐出部５４ｂから送風管５０に供給し、この送風管５０によって各肥料繰り出し装置４０の搬送風供給口４８に分配して供給し、各搬送風供給口４８からこれに連通している前記肥料送出筒４１に送り込むようになっている。
【００２８】
つまり、施肥装置３０は、次の如く施肥作業するようになっている。
すなわち、前記繰り出し駆動装置７０によって前記回転軸１５からの駆動力で全ての肥料繰り出し装置４０の肥料繰り出しロール４２を駆動する。そして、各肥料繰り出し装置４０において、肥料繰り出しロール４２により、この肥料繰り出しロール４２の周面に設けてある繰り出し凹部（図示せず）の容積と、肥料繰り出しロール４２の駆動回転数によって決まる単位時間当たりの設定繰り出し量で粒状肥料を肥料タンク３１から各肥料送出筒４１に繰り出し、この繰り出し肥料を、前記搬送風供給装置の送風管５０からの肥料搬送風によって肥料送出筒４１から肥料供給管路３２を通して作溝施肥具２６に供給し、この作溝施肥具２６が圃場の泥土部の植付け苗の横側に作成した溝内に肥料を落下させるようになっている。そして、常温の空気より温度が高い肥料搬送風によって肥料や肥料供給路３２の乾燥を図りながら施肥するようになっている。
【００２９】
図３，５に示すように、各肥料繰り出し装置４０の肥料繰り出しロール４２の回転支軸４３が一体回転自在に備えている支軸ギヤ４３ａに対して係脱自在な施肥クラッチギヤ４４を、車体横向きの１本の六角軸で成る回転式の操作軸４５によって一体回転および摺動自在に支持させ、図６，９の如くこの操作軸４５に対して一対の一方向クラッチ６０，６１およびリンク機構６２を利用してアーム形の操作部材６３を連動させることにより、この操作部材６３によって全ての肥料繰り出し装置４０の肥料繰り出しロール４２を回転操作するようになっている。
【００３０】
すなわち、前記一対の一方向クラッチ６０，６１それぞれの出力側回転体６０ａ，６１ａは、操作軸４５に対して外嵌しており、かつ、操作軸４５の六角形状のために操作軸４５に対して一体回転するように係合している。一対の一方向クラッチ６０，６１は、操作軸４５に対して互いに逆回転方向の回動力を伝達するようになっている。
【００３１】
リンク機構６２は、前記一対の一方向クラッチ６０，６１のうちの第1一方向クラッチ６０の入力側回転体６０ｂから一体回転自在に延出している揺動アーム６４、この揺動アーム６４に一端側が相対回動自在に連結している連動ロッド６５、この連動ロッド６５の他端側が第１アーム部６６ａに相対回動自在に連結しているとともに支持部材６７に連結ピン６７ａを介して回動自在に支持されている揺動リンク６６、この揺動リンク６６の第２アーム部６６ｂに一端側が相対回動自在に連結している連動ロッド６８、この連動ロッド６８の他端側が相対回動自在に連結しているとともに第２一方向クラッチ６１の入力側回転体６１ｂから一体回転自在に延出している揺動アーム６９を備えて構成してある。
【００３２】
つまり、操作部材６３が操作軸４５の軸芯まわりで正回転方向ロに回動操作されると、この回動力が第1一方向クラッチ６０によって操作軸４５に伝達され、この操作軸４５が正回転方向に回転駆動されて全ての肥料繰出し装置４０の施肥クラッチギヤ４４、支軸ギヤ４３ａを介して回転支軸４３を駆動して肥料繰り出しロール４２を繰り出し方向に回転操作する。このとき、操作部材６３の駆動力が第1一方向クラッチ６０の揺動アーム６４、連動ロッド６５、揺動リンク６６、連動ロッド６８、揺動アーム６９を介して第２一方向クラッチ６１の入力側回転体６１ｂに伝達されるが、この入力側回転体６１ｂは操作軸４５に対して逆回転方向に空回りし、第２一方向クラッチ６１は操作軸４５に対して伝動しない。操作部材６３が操作軸４５の軸芯まわりで逆回転方向イに回動操作されると、この回動力が第１一方向クラッチ６０の揺動アーム６４、連動ロッド６５、揺動リンク６６、連動ロッド６８、揺動アーム６９を介して第２一方向クラッチ６１の入力側回転体６１ｂに伝達されてこの第２一方向回転クラッチ６１によって操作軸４５に伝達され、操作軸４５が正回転方向に駆動されて全ての肥料繰り出し装置４０の施肥クラッチギヤ４４、支軸ギヤ４３ａを介して回転支軸４３を駆動して肥料繰り出しロール４２を繰り出し方向に回転操作する。このとき、第1一方向クラッチ６０の入力側回転体６０ｂは操作軸４５に対して逆回転方向に空回りし、この第1一方向クラッチ６０は操作軸４５に対して伝動しない。
【００３３】
これにより、操作部材６３は、操作軸４５の軸芯まわりで往復回動するように駆動されることにより、全ての肥料繰出し装置４０のうちの施肥クラッチギヤ４４が入りになっている肥料繰り出し装置４０の肥料繰り出しロール４２を繰り出し方向に回転操作する。そして、操作部材６３の往復回動駆動される回動角が変化することにより、各肥料繰り出しロール４２の単位時間での回転数が変化し、各肥料繰り出しロール４２が単位時間当たり繰り出す肥料の量が変化するようになっている。
【００３４】
図３，６などに示すように、前記繰り出し駆動装置７０は、前記回転軸１５が一端側を貫通している動力取り出しケース７１の他端側に軸芯７２ａまわりで回転自在に支持されているクランク体７２、このクランク体７２に下端側が球面利用の継ぎ手７３で相対回転自在に連結している連動杆７４、この連動杆７４の上端側を連動杆側連結部材８１および操作部材側連結部材９１を介して前記操作部材６３に連動連結させている繰り出し量調節機構７７を備えて構成してある。
【００３５】
クランク体７２の回転支軸７２ｂが動力取り出しケース７１の内部に位置するベベルギヤ機構（図示せず）によって前記回転軸１５に連動しており、クランク体７２は、回転軸１５の駆動力によって軸芯７２ａまわりで回転するように駆動され、前記継ぎ手７３のクランク体７２に連結している連結ピン７３ａを、前記軸芯７２ａを中心にした回転軌跡に沿わせて回転駆動するようになっている。
【００３６】
図８などに示すように、繰り出し量調節機構７７は、前記連動杆側連結部材８１を有した微調節機構８０と、前記操作部材側連結部材９１を有した粗調節機構９０を備えて構成してある。
【００３７】
図７，８などに示すように、前記粗調節機構９０は、一対の側板部９１ａ、上板部９１ｂ、背板部９１ｃを備えるように板金部材を組み合わせて成り、かつ、上板部９１ｂから連結ボルト９２が上向きに突出している前記操作部材側連結部材９１、この操作部材側連結部材９１の前記一対の側板部９１ａにわたって装着した位置決めピン９３、前記連結ボルト９２にメネジ部９４ａで装着したロック具９４を備えて構成してある。前記連結ボルト９２は、前記操作部材６３の背板部６３ａに操作部材６３の半径方向としての長手方向に沿う長孔形状にして設けたボルト長孔６３ｂを挿通しており、前記ロック具９４は、前記連結ボルト９２の操作部材６３の外側に突出している部分に装着してある。前記位置決めピン９３は、操作部材６３の一対の側板部６３ｃそれぞれの操作部材６３の半径方向としての長手方向に並ぶ複数箇所に設けた位置決め凹部９５に係脱するようになっている。
【００３８】
これにより、粗調節機構９０にあっては、ロック具９４を締め込み操作（ロック操作）してこのロック具９４と連結ボルト９２による締め付け力を発生させ、この締め付け力によって位置決めピン９３を操作部材６３の一対の側板部６３ｃそれぞれのいずれか一つの位置決め凹部９５に入り込ませて押し付けることにより、操作部材側連結部材９１を操作部材６３に対して締め付け連結できるようになっている。また、位置決めピン９３の位置決め凹部９５に対する押し付けを解除し、ロック具９４を操作部材に利用して、操作部材側連結部材９１を前記ボルト長孔６３に沿わせて操作部材６３に対してこれの長手方向にスライド操作し、操作部材６３の一対の側板部６３ｃそれぞれの複数個の位置決め凹部９５から一つを選択し、選択した位置決め凹部９５に位置決めピン９３を装着することにより、操作部材側連結部材９１を操作部材６３に対してこれの長手方向に位置変更して連結できるようになっており、この位置変更は、前記位置決め凹部９５の並列ピッチで決まる大調節ピッチでできるようになっている。
【００３９】
図７，８などに示すように、前記微調節機構８０は、一対の側板部８１ａ、背板部８１ｂを備えるように屈曲成形した板金部材で成り、背板部８１ｂから連結ボルトに兼用の調節ネジ軸８２が突出している前記連動杆側連結部材８１、前記調節ネジ軸８２にメネジ部８３ａで装着した調節ネジ具８３を備えて構成してある。連動杆側連結部材８１の前記一対の側板部８１ａの下端部どうしにわたって装着した連結ピン８４により、連動杆側連結部材８１の下端側と、前記連動杆７４の上端側の連結ボス部７４ａを相対回動自在に連結してある。連動杆側連結部材８１の前記一対の側板部８１ａそれぞれの上端側に操作部材６３の長手方向に沿う方向の長孔に形成したガイド長孔８５を設け、この各ガイド長孔８５に前記操作部材側連結部材９１の前記位置決めピン９３が摺動自在に挿通するようにして、かつ、前記連結ピン８４が前記操作部材側連結部材９１の一対の側板部９１ａそれぞれの下端側に操作部材６３の長手方向に沿う長孔に形成して設けてあるガイド長孔９６を摺動自在に挿通するようにして、連動杆側連結部材８１を操作部材側連結部材９１の内部に組み付けてある。操作部材側連結部材９１の前記背板部９１ｃが、前記調節ネジ軸８２が挿通している切欠き９７の周辺で調節ネジ具８３ａの環状溝８３ｂに入り込んでおり、これにより、調節ネジ具８３は操作部材側連結部材９１に対して相対回転しても、操作部材側連結部材９１に対して操作部材６３の長手方向には相対移動しないように、操作部材側連結部材９１と調節ネジ具８３が係合し合っている。
【００４０】
これにより、微調節機構８０にあっては、調節ネジ具８３と操作部材側連結部材９１の背板部９１ｃの係合により、連結杆側連結部材８１を操作部材側連結部材９１に対して操作部材６３の長手方向に相対移動しないように連結し、連動杆７４を連動杆側連結部材８１を介して操作部材側連結部材９１に連結するようになっている。そして、調節ネジ具８３を回転操作することにより、この調節ネジ具８３が操作部材側連結部材９１の背板部９１ｃを反力部材にして調節ネジ軸８２にネジ送り作用して連動杆側連結部材８１をガイド長孔８５および９６に沿わせて移動操作するため、連動杆側連結部材８１を操作部材側連結部材９１に対して操作部材６３の長手方向に位置変更して連結できるようになっており、この位置変更は、調節ネジ具８３によるネジ送りピッチによって決まる調節ピッチであって、操作部材側連結部材９１の操作部材６３に対する位置変更の調節ピッチより小ピッチの調節ピッチでできるようになっている。
【００４１】
粗調節機構９０の前記ロック具９４を締め込み操作し、位置決めピン９３を位置決め凹部９５に押し付けて操作部材側連結部材９１を操作部材６３に締め付け固定すると、この操作部材側連結部材９１が位置決めピン９３や連結ピン８４を介して連結杆側連結部材８１を操作アーム６３の方に引き寄せ操作し、これに伴って調節ネジ軸８２が調節ネジ具８３を操作アーム６３の方に引き上げ操作して調節ネジ具８３の両方の側面８３ｃのいずれか一方を操作部材６３の一対の側板部６３ｃそれぞれの端面で成る回り止めストッパー９８に当て付け操作するようになっている。すなわち、操作部材側連結部材９１を操作部材６３に対して調節した位置に固定されると、このロック操作によって調節ネジ具８３が回り止めストッパー９８に当て付け固定されて走行や駆動による振動などで回転しないように回り止めされた状態になり、連動杆側連結部材８１を操作部材側連結部材９１に対して調節した位置に固定できるようになっている。
【００４２】
図１０に示すように、前記クランク体７２に、複数個のピン孔１０１を有した駆動ピッチ調節機構１００を備えてある。
前記複数個のピン孔１０１は、一方のピン孔１０１の中心からクランク体７２の前記駆動回動軸芯７２ａまでの距離Ｌ１と、他方のピン孔１０１の中心からクランク体７２の前記駆動回動軸芯７２ａまでの距離Ｌ２が異なるように配置してクランク体７２に設けてある。各ピン孔１０１は、連動杆７４の前記継ぎ手７３の連結ピン７３ａを脱着できる仕様のピン孔にしてある。
【００４３】
これにより、駆動ピッチ調節機構１０１は、継ぎ手７３の連結ピン７３ａを前記複数個のピン孔１０１に付け替えることにより、クランク体７２における連動杆７４の連結位置を、クランク体回動軸芯７２ａからの直線距離が変更前よりも遠くなるとか近くなるように変化したものに変更し、これにより、クランク体７２によって駆動されて往復移動する連動杆７４の移動ストロークを変更して、連動杆７４によって往復駆動される操作部材６３の回動角を変更し、操作部材６３の往復回動によって操作される繰り出しロール４２の回転角を変更するようになっている。
【００４４】
つまり、各肥料繰り出し装置４０の駆動および繰り出し量調節を次の如く行なうようになっている。
すなわち、エンジン１１からの駆動力を左右後輪２に伝達する回転軸１５によって回動駆動されるクランク体７２の回転駆動力を連動杆７４によって往復動力に変換して微調節機構８０の連動杆側連結部材８１、粗調節機構９０の操作部材側連結部材９１を介して操作部材６３に伝達して、この操作部材６３を操作軸４５の軸芯まわりで正回転方向ロと、逆回転方向イに往復回動するように駆動する。正回転方向ロに回動する操作部材６３によって第1一方向クラッチ６０を介して操作軸４５を繰り出し回転方向に回転操作し、この操作軸４５の回転を入り位置になっている施肥クラッチギヤ４４、支軸ギヤ４３ａを介して繰り出しロール支軸４３に伝達し、複数個の施肥繰り出し装置４０のうちの施肥クラッチギヤ４４が入りになっている肥料繰り出し装置４０の肥料繰り出しロール４２を繰り出し方向に回転操作する。また、逆回転方向イに回動する操作部材６３によって第１一方向クラッチ６０の入力側回転体６０ｂ、リンク機構６２、第２一方向クラッチ６１を介して操作軸４５を繰り出し回転方向に回転操作し、この操作軸４５の回転を入り位置になっている施肥クラッチギヤ４４、支軸ギヤ４３ａを介して繰り出しロール支軸４３に伝達し、複数個の施肥繰り出し装置４０のうちの施肥クラッチギヤ４４が入りになっている肥料繰り出し装置４０の肥料繰り出しロール４２を繰り出し方向に回転操作する。
【００４５】
粗調節機構９０を操作すると、操作部材側連結部材９１が操作部材６３に対して大調節ピッチで移動して操作部材６３の操作部材側連結部材９１が連結する位置が操作部材６３の長手方向に大調節ピッチで変化し、操作部材６３の連動杆７４が作用する位置が操作部材６３の半径方向に大調節ピッチで変化して連動杆７４によって往復回動操作される回動角が比較的大きな変化幅で変化し、肥料繰り出しロール４２が単位時間当たりに繰り出す肥料の量を比較的大きい変化幅で変化するように粗調節できる。微調節機構８０を操作すると、連動杆側連結部材８１が操作部材側連結部材９１に対して小調節ピッチで移動して操作部材側連結部材９１の連動杆側連結部材８１が連結する位置が操作部材６３の半径方向に小調節ピッチで変化し、操作部材６３の連動杆７４が作用する位置が操作部材６３の半径方向に小調節ピッチで変化して連動杆７４によって往復回動操作される回動角が比較的小さな変化幅で変化し、肥料繰り出しロール４２が単位時間当たりに繰り出す肥料の量を比較的小さい変化幅で変化するように微調節できる。このとき、駆動ピッチ調節機構１００を併せて操作することにより、連動杆７４によって往復回動操作される操作部材６３の回動角がさらに変化する。これにより、操作部材６３の往復回動によって操作される肥料繰り出しロール４２の回転角がさらに変化し、肥料繰り出しロール４２によって単位時間当たりに繰り出される肥料の量がさらに広い調節範囲にわたって変化する。
【００４６】
粗調節機構９０に併せて微調節機構８０を操作すると、粗調節機構９０による調節によって決まった操作部材６３の連動杆作用位置が基準位置となり、この基準位置から小調節ピッチで変化した連結杆作用位置が実際の連結杆作用位置になり、微調節機構８０による微調節の効く範囲が、粗調節機構９０を操作しないで微調節機構８０のみを操作した場合のその範囲より広くして、繰り出し量調節ができる。このとき、ロック具９４を締め込み操作して調節位置になった操作部材側連結部材９１を操作部材６３に対して固定すれば、この固定操作によって調節ネジ具８３を回り止めストッパー９８に当て付け固定し、調節位置になった連動杆側連結部材８１を操作部材側連結部材９１に対して固定できる。
【００４７】
〔別実施形態〕
上記実施形態の如くアーム形の操作部材６３を採用する他、回動軸芯に沿う方向で扇形や円形であるなど、各種形状の操作部材を採用して実施してもよい。扇形や円形を採用した場合、連動杆側連結部材８１や操作部材側連結部材９１を操作部材の半径方向に位置変更調節自在に連結するように構成すれば、本発明の目的を達成できる。
【図面の簡単な説明】
【図１】施肥装置付き乗用型田植機全体の側面図
【図２】施肥装置付き乗用型田植機全体の平面図
【図３】施肥装置の後面図
【図４】吸気ダクトの平面図
【図５】肥料繰り出し装置の側面図
【図６】粗調節機構及び微調節機構の側面図
【図７】粗調節機構及び微調節機構の分解状態での斜視図
【図８】（イ）は、微調節機構を一方向に調節した状態を示す断面図、（ロ）は、微調節機構を他方向に調節した状態を示す断面図
【図９】操作軸と操作部材の連動状態を示す断面図
【図１０】駆動ピッチ調節機構の側面図
【符号の説明】
４２肥料繰り出しロール
６３操作部材
７２クランク体
７２ａクランク体の回動軸芯
７４連動杆
８０微調節機構
８１連動杆側連結部材
８２調節ネジ
９０粗調節機構
９１操作部材側連結部材
９４ロック具
９８回り止めストッパー
１００駆動ピッチ調節機構[0001]
BACKGROUND OF THE INVENTION
The present invention is for a rice transplanter equipped with a reciprocating rotatable operation member for rotating a fertilizer feeding roll, and an interlocking rod for converting a rotational driving force of a driveable crank body into reciprocating power and transmitting it to the operation member. It relates to fertilizer application equipment.
[0002]
[Prior art]
In the fertilizer application apparatus, as shown in, for example, Patent Document 1, conventionally, an input-side rotating body 31a as a reciprocally-rotatable operating member for rotating a fertilizer feeding roll is provided in a radial direction of the input-side rotating body 31a. By providing a plurality of connecting holes 31b arranged side by side and connecting an output rod 39 as an interlock rod to one selected from the plurality of coupling holes 31b, the output rod acting position of the input side rotating body 31a is changed to the input side rotating body 31a. The rotation angle by which the input side rotating body 31a is reciprocally rotated by the output rod 39 is changed to change the feed amount by the fertilizer feed roll.
[0003]
[Patent Document 1]
JP 2002-84825 A (paragraph numbers [0042], [0043], FIG. 4, FIG. 7)
[0004]
[Problems to be solved by the invention]
If the above-mentioned conventional adjustment technology is used to make it possible to adjust the feed amount, it becomes impossible to accurately adjust the feed amount to the desired amount, or the adjustment work required to change the feed amount significantly increases. It was.
That is, in the conventional adjustment technique, the position where the interlocking rod of the operating member acts is changed by one changing means, so the interval between the multiple interlocking rod connecting positions arranged in the radial direction of the operating member is set to a relatively large interval. , If the interlocking action position of the operation member can be quickly changed and adjusted at a large adjustment pitch, the interlocking action position of the operation member cannot be changed at a small adjustment pitch, and the feed amount cannot be finely adjusted. There was a case where the desired amount was not achieved.
On the other hand, the position where the interlocking rod of the operating member is connected can be changed and adjusted by screw feed, etc., and the interlocking rod action position of the operating member can be changed with a small adjustment pitch so that the feeding amount can be finely adjusted. When performing an adjustment with a large amount of change in the feed amount, a lot of adjustment work is required, such as rotating the adjustment screw many times so that the interlocking rod moves greatly with respect to the operation member.
[0005]
An object of the present invention is to provide a fertilizer application for rice transplanters that can perform appropriate adjustment efficiently while changing the amount of feeding operation by changing the interlocking action position of the operation member.
[0006]
[Means for Solving the Problems]
The configuration, operation, and effect of the invention according to claim 1 are as follows.
[0007]
〔Constitution〕
In a fertilizer for rice transplanters comprising a reciprocating rotatable operation member for rotating a fertilizer feeding roll, and an interlocking rod for converting the rotational driving force of a driveable crank body into reciprocating power and transmitting it to the operation member. An operation member side coupling member that is interposed between the operation member and the interlocking rod and interlocks the operation member and the interlocking rod, and an interlocking rod side coupling member, wherein the operation member side coupling member is an operation member with respect to the operation member And a coarse adjustment mechanism for freely changing the position in the radial direction with a large adjustment pitch, and the position of the interlocking rod side connection member with respect to the operation member side connection member at a small adjustment pitch in the radial direction of the operation member. A fine adjustment mechanism is provided that is connected in an adjustable manner to change the interlocking rod connection position of the operation member side connection member in the radial direction of the operation member.
[0008]
[Action]
The interlocking rod is connected to the operating member via the operating member side connecting member and the interlocking rod side connecting member, and the reciprocating power of the interlocking rod acts on the operating member via the interlocking rod side connecting member and the operating member side connecting member. Is. When the coarse adjustment mechanism is operated, the operating member side connecting member moves with respect to the operating member at a large adjusting pitch, and the position of the operating member connected to the operating member side connecting member changes in the radial direction of the operating member at the large adjusting pitch. To do. When the fine adjustment mechanism is operated, the interlocking rod side connecting member moves with a small adjustment pitch relative to the operating member side connecting member, and the position where the interlocking rod of the operating member side connecting member connects is slightly adjusted in the radial direction of the operating member. It changes with the pitch.
[0009]
As a result, when the coarse adjustment mechanism is operated, the position at which the interlocking rod of the operation member acts changes at a large adjustment pitch in the radial direction of the operation member, and the rotation angle at which the operation member is reciprocally rotated by the interlocking rod is compared. The amount of fertilizer delivered by the fertilizer feed roll per unit time is relatively large because the rotation angle at which the feed roll is operated by the reciprocating rotation of the operation member is changed by a relatively large change width. It changes with the range of change.
[0010]
When the fine adjustment mechanism is operated, the position where the interlocking rod of the operating member acts changes at a small adjustment pitch in the radial direction of the operating member, and the rotation angle at which the operating member is reciprocally rotated by the interlocking rod changes relatively small The amount of fertilizer that the fertilizer feeding roll pays out per unit time changes with a relatively small change width, and the rotation angle at which the feeding roll is operated by the reciprocating rotation of the operation member changes with the width. Change. At this time, if the coarse adjustment mechanism is also operated, the feed amount determined by the coarse adjustment mechanism becomes the reference feed amount, and the feed amount changed with a small width from the reference feed amount becomes the actual feed amount. That is, by operating both the fine adjustment mechanism and the coarse adjustment mechanism together, the range in which the fine adjustment by the fine adjustment mechanism is effective is wider than that when only the fine adjustment mechanism is operated.
[0011]
〔effect〕
Therefore, by appropriately operating the coarse adjustment mechanism and the fine adjustment mechanism, the position where the interlocking movement of the operation member acts can be changed with the large adjustment pitch or the small adjustment pitch, or the range in which the change with the small adjustment pitch is effective can be widened. The feed amount can be adjusted to a desired amount with high accuracy. In addition, compared with the case where the adjustment is made only with the fine adjustment mechanism, the coarse adjustment mechanism can quickly adjust the movement of the interlocking rod when the desired change width is large, and the overall adjustment is less. Can be done efficiently with effort.
[0012]
The structure, operation, and effect of the invention according to claim 2 are as follows.
[0013]
〔Constitution〕
In the configuration of the invention according to claim 1, the coarse adjustment mechanism includes a lock tool for fastening and fixing the operation member side connecting member to the operation member, and an adjustment screw of the fine adjustment mechanism by a lock operation of the lock tool. Is configured to be fixed to the rotation stopper.
[0014]
[Action]
After adjusting the position of the operating member side connecting member, the lock member is operated and the operating member side connecting member is fastened and fixed to the operating member. It is fixed by applying to. As a result, the adjustment screw can be fixed at once by performing a locking operation for fixing the operating member side connecting member.
[0015]
〔effect〕
Therefore, when the adjustment of the feeding amount is performed, the operating member side connecting member is fixed to the operating member and the interlocking rod side connecting member is fixed to the operating member side connecting member to enable the fertilizer to be driven. By fixing the operating member side connecting member with the tool and fixing the interlocking rod side connecting member by preventing the adjustment screw from rotating at once, the operation of the fertilizer can be easily performed.
[0016]
The structure, operation, and effect of the invention according to claim 3 are as follows.
[0017]
〔Constitution〕
In the configuration of the invention according to claim 1 or 2, the crank body is provided with a drive pitch adjusting mechanism for changing the connecting position of the interlocking rod in the perspective direction with respect to the crank body rotation axis.
[0018]
[Action]
When the drive pitch adjusting mechanism is operated, the interlocking position of the crank body changes in the perspective direction with respect to the crank body rotation axis, the stroke of the interlocking body driven by the crank body changes, and the operation member moves in the interlocking direction. The rotation angle at which the reciprocating operation is performed is changed. Accordingly, when the drive pitch adjusting mechanism is operated, the rotation angle of the feeding roll operated by the reciprocating rotation of the operation member changes, and the amount of fertilizer that the fertilizer feeding roll feeds per unit time changes.
[0019]
〔effect〕
Therefore, rather than operating only the coarse adjustment mechanism and fine adjustment mechanism to adjust the feed rate of fertilizer, it can be adjusted over a wider adjustment range by operating the drive pitch adjustment mechanism together, and the spraying amount per unit area can be reduced. Numerous types of fertilizers can be used that adjust over a wide adjustment range or differ in the amount to be spread per unit area.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, a spare wheel located on both lateral sides of a prime mover 10 having a pair of left and right steering operations and a front wheel 1 that can be driven, a pair of left and right drivelable rear wheels 2, and an engine 11. A seedling planting device 20 is connected to a rear portion of a body frame 5 of a self-propelled vehicle body having a driving unit having a seedling container 3 and a driver's seat 4 via a link mechanism 6 having a lift cylinder 7. It is configured to transmit the driving force from the engine 11 to the seedling planting device 20 via the rotary shaft 8, and a fertilizer application device 30 having a fertilizer tank 31 near the rear side of the driver's seat 4 of the self-propelled vehicle body. The riding type rice transplanter with a fertilizer application is constituted.
[0021]
That is, when the lift cylinder 7 is operated, the lift cylinder 7 swings the link mechanism 6 up and down with respect to the vehicle body frame 5, so that the seedling planting device 20 is lowered with the grounding float 21 touching the field scene. The working state and the grounding float 21 are moved up and down to a non-working state in which the ground float 21 is raised upward from the farm scene. When the seedling planting device 20 is moved down and the self-propelled vehicle is driven, a plurality of seedling planting mechanisms 22 arranged in the lateral direction of the body of the seedling planting device 20 are seedlings of the seedling planting mechanism 22. A block of seedlings is cut out from the lower end of the mat-like seedling placed on the seedling placing table 25 that is reciprocated in the horizontal direction in conjunction with the planting movement, taken down and planted in the field. It has come to go. At the same time, the fertilizer 30 supplies the granular fertilizer stored in the fertilizer tank 31 to the field near the side of the seedlings planted by each seedling planting mechanism 22.
[0022]
As shown in FIGS. 1 and 3, the fertilizer application device 30 includes a fertilizer frame 14 that is connected to the pair of left and right main frames 5 a of the body frame 5 via a pair of left and right blower support plates 12 and struts 13. The fertilizer feeding device 40 attached to a plurality of locations in the above, the fertilizer tank 31 in which a plurality of funnel-shaped bottom portions communicate with the upper ends of the plurality of fertilizer feeding devices 40, and the plurality of fertilizer feeding devices. 40 Fertilizer supply pipe 32 extending from both or one of the pair of left and right body-facing fertilizer delivery cylinders 41 located at the lower part of each body to the seedling planting device 20, and the driving force from the engine 11 as a rear wheel transmission case 9 is provided with a feeding drive device 70 that drives each fertilizer feeding device 40 by the driving force of the rotary shaft 15 provided on the self-propelled vehicle body so as to be transmitted to the vehicle 9.
[0023]
As shown in FIG. 1, the end portions of the plurality of fertilizer supply conduits 32 leading to the seedling planting device 20 are arranged so as to be positioned one by one near the side of the seedling planting site by each seedling planting mechanism 22. The plurality of groove fertilizers 26 attached to the grounding float 21 are communicated with each other. Each fertilizer supply pipe line 32 is bent as the seedling planting device 20 is lifted and lowered so that the seedling planting device 20 can be lifted and lowered, and this resin hose 32a has flexibility. Is provided with a fertilizer supply pipe 32b made of a resin pipe connected to the groove fertilizer 26.
[0024]
As shown in FIGS. 3, 4, 5, etc., one sideways vehicle body that communicates with a pair of left and right forward vehicle wind supply ports 48 located at the bottom of each of the plurality of fertilizer feeding devices 40. A blower pipe 50, an electric blower 54 configured such that a discharge portion 54b communicates with a central portion in the longitudinal direction of the blower pipe 50 and supported across the pair of left and right blower support plates 12, and the side of the electric blower 54 in the side of the vehicle body. A conveying wind supply device is configured by including an intake duct 55 whose proximal end is connected to the outward intake portion 54a by a connection duct 56 and whose distal end is located in the driving portion 10.
[0025]
The intake duct 55 has a substantially horizontal front end side when viewed from the side of the vehicle body, and a rearwardly rising slope that is positioned at a higher level as the base end side reaches the rear side of the vehicle body. It consists of a circular tube made of resin that is bent and molded so as to be inclined to the front laterally outward as the tip side reaches the front side of the vehicle body along the direction, and passes below the driving part floor in the vehicle longitudinal direction Further, the opening on the proximal end side is communicated with the intake portion 54a of the blower 54 by the connection duct 56, and the intake port 55a on the distal end side is further connected to the intake portion 54a of the blower 54. The vehicle body frame 5 is assembled so as to be located at a lower arrangement level than the arrangement level. The intake port 55a of the intake duct 55 is disposed so as to open inward of the vehicle body near the rear side of the vehicle body of the engine exhaust muffler 11a located in the prime mover 10. The intake port 55 a of the intake duct 55 is further connected to the hydrostatic continuously variable transmission 16 on the leeward side of the cooling fan 17 provided in the hydrostatic continuously variable transmission 16 located behind the engine 11. It arrange | positions so that it may open toward.
[0026]
The hydrostatic continuously variable transmission 16 includes a variable displacement axial plunger hydraulic pump (not shown) in which an input shaft 16a is interlocked with an output shaft of the engine 11 via a transmission belt 18, and A hydraulic motor (not shown) driven by pressure oil from the hydraulic pump is provided, and the driving force from the engine 11 is switched between the forward side and the reverse side, and steplessly on both the forward side and the reverse side. The speed is changed and transmitted to a traveling mission (not shown) located inside the mission case 19 and transmitted from the traveling mission to the front and rear wheels 1 and 2. Further, the cooling fan 17 attached to the input shaft 16a so as to be integrally rotatable is a cooling that flows through the casing of the continuously variable transmission 16 toward the intake port 55a of the intake duct 55 along the lateral direction of the vehicle body. By generating wind, the continuously variable transmission 16 is air-cooled.
[0027]
As a result, the carrier air supply device uses the air that has risen in temperature due to the engine exhaust muffler 11a and the air that has risen in temperature due to the hydrostatic continuously variable transmission 16 to send in the blowing power from the cooling fan 17. The feed and the suction force of the blower 54 take in the intake duct 55 while mixing with the air located in the vicinity of the intake port 55a of the intake duct 55 and suck it from the intake duct 55 to the blower 54. Generates a fertilizer conveying wind having a temperature higher than that of normal temperature air, supplies the fertilizer conveying wind from the discharge portion 54b to the blower pipe 50, and distributes it to the carry wind supply port 48 of each fertilizer feeding device 40 by the blower pipe 50. Thus, the fertilizer delivery tube 41 communicates with each of the conveying wind supply ports 48 and sends it to the fertilizer delivery tube 41.
[0028]
That is, the fertilizer application device 30 is adapted to perform fertilization work as follows.
That is, the feed drive device 70 drives the fertilizer feed rolls 42 of all the fertilizer feed devices 40 with the driving force from the rotating shaft 15. In each fertilizer feeding device 40, the unit time determined by the fertilizer feeding roll 42 is determined by the volume of a feeding recess (not shown) provided on the peripheral surface of the fertilizer feeding roll 42 and the drive rotation speed of the fertilizer feeding roll 42. The granular fertilizer is fed from the fertilizer tank 31 to each fertilizer delivery tube 41 with a set feed amount per hit, and this feed fertilizer is fed from the fertilizer feed tube 41 to the fertilizer supply pipe by the fertilizer transport wind from the blower pipe 50 of the transport wind supply device. 32 is supplied to the grooving fertilizer 26, and the grooving fertilizer 26 drops the fertilizer into the groove created on the side of the planted seedling in the mud portion of the field. Then, fertilizer is applied while drying the fertilizer and the fertilizer supply path 32 by a fertilizer conveying wind having a temperature higher than that of normal temperature air.
[0029]
As shown in FIGS. 3 and 5, a fertilizer clutch gear 44 that is detachable with respect to a support gear 43 a that is provided so that the rotation support shaft 43 of the fertilizer supply roll 42 of each fertilizer supply device 40 is integrally rotatable is provided on the vehicle body. It is supported by a rotary operation shaft 45 consisting of one lateral hexagonal shaft so as to be integrally rotatable and slidable, as shown in FIGS. 6 and 9, a pair of one-way clutches 60 and 61 and a link mechanism. When the arm-shaped operation member 63 is interlocked using 62, the manure feeding rolls 42 of all the manure feeding devices 40 are rotated by the operation member 63.
[0030]
That is, the output-side rotators 60 a and 61 a of the pair of one-way clutches 60 and 61 are externally fitted to the operation shaft 45, and because of the hexagonal shape of the operation shaft 45, Are engaged so as to rotate together. The pair of one-way clutches 60 and 61 are configured to transmit the rotational force in the reverse rotation direction to the operation shaft 45.
[0031]
The link mechanism 62 includes a swing arm 64 extending from the input side rotary body 60b of the first one-way clutch 60 of the pair of one-way clutches 60, 61 so as to be integrally rotatable. The interlocking rod 65 whose side is connected to be relatively rotatable, the other end of the interlocking rod 65 is connected to the first arm portion 66a so as to be relatively rotatable, and is also rotated to the support member 67 via the connecting pin 67a. A swinging link 66 that is freely supported, an interlocking rod 68 having one end connected to the second arm portion 66b of the swinging link 66 so as to be relatively rotatable, and the other end of the interlocking rod 68 being relatively rotatable. And a swinging arm 69 extending from the input side rotating body 61b of the second one-way clutch 61 so as to be integrally rotatable.
[0032]
That is, when the operation member 63 is rotated in the forward rotation direction B around the axis of the operation shaft 45, the rotational force is transmitted to the operation shaft 45 by the first one-way clutch 60, and the operation shaft 45 is moved forward. The rotation support shaft 43 is driven via the fertilizer application clutch gear 44 and the support shaft gear 43a of all the fertilizer supply devices 40 by being rotationally driven in the rotation direction, and the fertilizer supply roll 42 is rotated in the supply direction. At this time, the driving force of the operating member 63 is input to the second one-way clutch 61 via the swing arm 64, the interlocking rod 65, the swing link 66, the interlocking rod 68, and the swing arm 69 of the first one-way clutch 60. Although transmitted to the side rotating body 61 b, the input side rotating body 61 b idles in the reverse rotation direction with respect to the operation shaft 45, and the second one-way clutch 61 is not transmitted to the operation shaft 45. When the operation member 63 is rotated in the reverse rotation direction A around the axis of the operation shaft 45, this rotational force is used for the swing arm 64, the interlocking rod 65, the swing link 66, and the interlocking of the first one-way clutch 60. It is transmitted to the input side rotating body 61b of the second one-way clutch 61 via the rod 68 and the swing arm 69, and is transmitted to the operation shaft 45 by the second one-way rotation clutch 61, so that the operation shaft 45 is moved in the forward rotation direction. The rotary support shaft 43 is driven through the fertilizer application clutch gear 44 and the support shaft gear 43a of all the fertilizer supply devices 40 to be driven to rotate the fertilizer supply roll 42 in the supply direction. At this time, the input-side rotating body 60 b of the first one-way clutch 60 idles in the reverse rotation direction with respect to the operation shaft 45, and the first one-way clutch 60 is not transmitted to the operation shaft 45.
[0033]
As a result, the operating member 63 is driven so as to reciprocately rotate around the axis of the operating shaft 45, so that the fertilizer feeding device in which the fertilizing clutch gear 44 of all the fertilizer feeding devices 40 is contained. 40 manure feed rolls 42 are rotated in the feed direction. Then, the rotation angle of the operation member 63 that is driven to reciprocate is changed, so that the number of rotations of each fertilizer feeding roll 42 changes per unit time, and the amount of fertilizer that each fertilizer feeding roll 42 feeds per unit time. Is changing.
[0034]
As shown in FIGS. 3 and 6, the feeding drive device 70 is rotatably supported around an axis 72 a on the other end side of the power take-out case 71 through which the rotary shaft 15 penetrates one end side. A crank body 72, an interlocking rod 74 whose lower end side is connected to the crank body 72 by a joint 73 using a spherical surface so as to be relatively rotatable, and an upper end side of the interlocking rod 74 is connected to an interlocking rod side connecting member 81 and an operating member side connecting member 91. The feed amount adjusting mechanism 77 is interlocked and connected to the operation member 63 via the operation member 63.
[0035]
A rotating support shaft 72b of the crank body 72 is linked to the rotating shaft 15 by a bevel gear mechanism (not shown) located inside the power take-out case 71. The crank body 72 is driven by the driving force of the rotating shaft 15. The connecting pin 73a, which is driven to rotate around 72a and is connected to the crank body 72 of the joint 73, is driven to rotate along a rotation locus centered on the shaft core 72a.
[0036]
As shown in FIG. 8 and the like, the feed amount adjustment mechanism 77 includes a fine adjustment mechanism 80 having the interlocking rod side connection member 81 and a rough adjustment mechanism 90 having the operation member side connection member 91. It is.
[0037]
As shown in FIGS. 7 and 8, etc., the coarse adjustment mechanism 90 is formed by combining sheet metal members so as to include a pair of side plate portions 91a, an upper plate portion 91b, and a back plate portion 91c, and from the upper plate portion 91b. The operating member side connecting member 91 from which the connecting bolt 92 protrudes upward, the positioning pin 93 attached over the pair of side plate portions 91a of the operating member side connecting member 91, and the lock attached to the connecting bolt 92 by the internal thread portion 94a. A tool 94 is provided. The connecting bolt 92 is inserted into a back plate portion 63a of the operation member 63 through a bolt long hole 63b provided in a long hole shape along the longitudinal direction of the operation member 63 as a radial direction. The connecting bolt 92 is mounted on a portion protruding outside the operation member 63. The positioning pins 93 are engaged with and disengaged from positioning recesses 95 provided at a plurality of positions in the longitudinal direction as the radial direction of the operation member 63 of each of the pair of side plate portions 63c of the operation member 63.
[0038]
As a result, in the coarse adjustment mechanism 90, the lock 94 is tightened (locked) to generate a tightening force by the lock 94 and the connecting bolt 92, and the positioning pin 93 is operated by the tightening force. The operating member side connecting member 91 can be clamped and connected to the operating member 63 by entering and pressing any one positioning recess 95 of each of the pair of side plate parts 63c of 63. Further, the pressing of the positioning pin 93 against the positioning recess 95 is released, and the operation member side connecting member 91 is moved along the bolt long hole 63 with respect to the operation member 63 by using the lock 94 as the operation member. By operating the slide in the longitudinal direction, selecting one of the plurality of positioning recesses 95 of each of the pair of side plate portions 63c of the operation member 63, and mounting the positioning pin 93 on the selected positioning recess 95, the operation member side connection The member 91 can be connected to the operation member 63 by changing its position in the longitudinal direction, and this change of position can be made with a large adjustment pitch determined by the parallel pitch of the positioning recesses 95. .
[0039]
As shown in FIGS. 7 and 8, the fine adjustment mechanism 80 is formed of a sheet metal member that is bent so as to include a pair of side plate portions 81a and a back plate portion 81b, and the dual adjustment from the back plate portion 81b to the connecting bolt. The interlocking rod side connecting member 81 from which the screw shaft 82 protrudes and the adjusting screw tool 83 attached to the adjusting screw shaft 82 by a female screw portion 83a are provided. The connecting pin 84 attached across the lower ends of the pair of side plate portions 81a of the interlocking rod side connecting member 81 causes the lower end side of the interlocking rod side connecting member 81 and the connecting boss portion 74a on the upper end side of the interlocking rod 74 to be relative to each other. It is pivotably connected. Guide long holes 85 formed in long holes in the direction along the longitudinal direction of the operation member 63 are provided on the upper ends of the pair of side plate portions 81a of the interlocking saddle-side connecting member 81, and the operation members are provided in the guide long holes 85. The positioning pin 93 of the side connecting member 91 is slidably inserted, and the connecting pin 84 is disposed on the lower end side of each of the pair of side plate portions 91a of the operating member side connecting member 91. The interlock rod side connecting member 81 is assembled inside the operation member side connecting member 91 so as to be slidably inserted through a guide long hole 96 formed in a long hole along the direction. The back plate portion 91c of the operation member side connecting member 91 enters the annular groove 83b of the adjusting screw tool 83a around the notch 97 through which the adjusting screw shaft 82 is inserted. The operating member side connecting member 91 and the adjusting screw 83 are prevented from moving relative to the operating member side connecting member 91 in the longitudinal direction of the operating member 63 even if they rotate relative to the operating member side connecting member 91. Are engaged.
[0040]
As a result, in the fine adjustment mechanism 80, the connection rod side connection member 81 is operated with respect to the operation member side connection member 91 by the engagement of the adjustment screw 83 and the back plate portion 91c of the operation member side connection member 91. The members 63 are connected so as not to move relative to each other in the longitudinal direction, and the interlocking rod 74 is connected to the operation member side connecting member 91 via the interlocking rod side connecting member 81. Then, by rotating the adjusting screw 83, the adjusting screw 83 acts as a reaction member on the back plate portion 91c of the operating member side connecting member 91 and feeds it to the adjusting screw shaft 82 so that the interlocking side connection is achieved. Since the member 81 is moved and operated along the guide elongated holes 85 and 96, the interlocking rod side connecting member 81 can be connected to the operating member side connecting member 91 by changing the position in the longitudinal direction of the operating member 63. This position change is an adjustment pitch determined by the screw feed pitch by the adjustment screw tool 83, and can be made with an adjustment pitch smaller than the adjustment pitch for changing the position of the operation member side connecting member 91 relative to the operation member 63. It has become.
[0041]
When the locking member 94 of the coarse adjustment mechanism 90 is tightened and the positioning pin 93 is pressed against the positioning recess 95 and the operating member side connecting member 91 is fastened and fixed to the operating member 63, the operating member side connecting member 91 becomes the positioning pin. The connecting rod side connecting member 81 is pulled toward the operation arm 63 via the connecting pin 93 and the connecting pin 84, and the adjustment screw shaft 82 pulls the adjustment screw 83 toward the operation arm 63 and adjusts accordingly. Either one of both side surfaces 83c of the screw tool 83 is applied to a rotation stopper 98 formed by the end surfaces of the pair of side plate portions 63c of the operation member 63 for operation. That is, when the operating member side connecting member 91 is fixed at a position adjusted with respect to the operating member 63, the adjusting screw tool 83 is abutted and fixed to the anti-rotation stopper 98 by this locking operation, and vibration due to running or driving is caused. The interlocked rod side connecting member 81 can be fixed at an adjusted position with respect to the operating member side connecting member 91 so as not to rotate.
[0042]
As shown in FIG. 10, the crank body 72 is provided with a drive pitch adjusting mechanism 100 having a plurality of pin holes 101.
The plurality of pin holes 101 include a distance L1 from the center of one pin hole 101 to the drive rotation axis 72a of the crank body 72, and the drive rotation of the crank body 72 from the center of the other pin hole 101. The crank body 72 is provided so that the distance L2 to the shaft core 72a is different. Each pin hole 101 is a pin hole having a specification that allows the connection pin 73a of the joint 73 of the interlocking rod 74 to be attached and detached.
[0043]
As a result, the drive pitch adjusting mechanism 101 replaces the connecting pin 73a of the joint 73 with the plurality of pin holes 101, thereby changing the connecting position of the interlocking rod 74 in the crank body 72 from the crank body rotating shaft 72a. The linear distance is changed so that it is longer or closer than before the change, and by this, the movement stroke of the interlocking rod 74 that is driven by the crank body 72 to reciprocate is changed. The rotation angle of the operation member 63 to be driven is changed, and the rotation angle of the feeding roll 42 operated by the reciprocating rotation of the operation member 63 is changed.
[0044]
That is, the driving of each fertilizer feeding device 40 and the feeding amount adjustment are performed as follows.
That is, the rotational driving force of the crank body 72 that is rotationally driven by the rotating shaft 15 that transmits the driving force from the engine 11 to the left and right rear wheels 2 is converted into reciprocating power by the interlocking rod 74, and the interlocking rod of the fine adjustment mechanism 80. This is transmitted to the operation member 63 via the side connection member 81 and the operation member side connection member 91 of the coarse adjustment mechanism 90, and the operation member 63 is rotated in the forward and reverse rotation directions around the axis of the operation shaft 45. To reciprocally rotate. The operating shaft 45 is fed out and rotated in the rotating direction via the first one-way clutch 60 by the operating member 63 that rotates in the forward rotation direction B, and the fertilizer clutch gear 44 that is in the rotation position is rotated. The fertilizer feed roll 42 of the fertilizer feed device 40 in which the fertilizer clutch gear 44 of the plurality of fertilizer feed devices 40 is inserted is transmitted to the feed roll support shaft 43 via the support shaft gear 43a in the feed direction. Rotate. Further, the operating shaft 45 is fed out and rotated in the rotating direction by the operating member 63 that rotates in the reverse rotating direction A through the input side rotating body 60b of the first one-way clutch 60, the link mechanism 62, and the second one-way clutch 61. Then, the rotation of the operation shaft 45 is transmitted to the feed roll support shaft 43 via the fertilization clutch gear 44 and the support shaft gear 43a which are in the entering position, and the fertilization clutch gear 44 of the plurality of fertilization supply devices 40 is transmitted. The fertilizer feeding roll 42 of the fertilizer feeding device 40 in which is entered is rotated in the feeding direction.
[0045]
When the coarse adjustment mechanism 90 is operated, the operation member side connecting member 91 moves with a large adjustment pitch with respect to the operation member 63, and the position where the operation member side connecting member 91 of the operation member 63 is connected is in the longitudinal direction of the operation member 63. The position at which the interlocking rod 74 of the operating member 63 acts changes at a large adjustment pitch, and the rotational angle at which the interlocking rod 74 is reciprocally rotated by the large adjustment pitch in the radial direction of the operating member 63 is relatively large. The amount of fertilizer fed by the fertilizer feeding roll 42 per unit time can be roughly adjusted so as to change with a relatively large variation width. When the fine adjustment mechanism 80 is operated, the interlocking hook side connecting member 81 moves with a small adjustment pitch with respect to the operating member side connecting member 91, and the position where the interlocking hook side connecting member 81 of the operating member side connecting member 91 is connected is operated. The position at which the interlocking rod 74 of the operating member 63 acts in the radial direction of the member 63 changes with a small adjustment pitch in the radial direction of the operating member 63, and the position where the interlocking rod 74 is reciprocally rotated. The moving angle changes with a relatively small change width, and the amount of fertilizer fed by the fertilizer feeding roll 42 per unit time can be finely adjusted so as to change with a relatively small change width. At this time, by operating the drive pitch adjusting mechanism 100 together, the rotation angle of the operation member 63 that is reciprocally rotated by the interlocking rod 74 is further changed. Thereby, the rotation angle of the fertilizer feeding roll 42 operated by the reciprocating rotation of the operation member 63 further changes, and the amount of fertilizer fed per unit time by the fertilizer feeding roll 42 changes over a wider adjustment range.
[0046]
When the fine adjustment mechanism 80 is operated together with the coarse adjustment mechanism 90, the interlocking action position of the operation member 63 determined by the adjustment by the coarse adjustment mechanism 90 becomes the reference position, and the connection action changes from this reference position with a small adjustment pitch. The position becomes the actual coupling lever action position, and the range in which fine adjustment by the fine adjustment mechanism 80 is effective is wider than that when only the fine adjustment mechanism 80 is operated without operating the coarse adjustment mechanism 90, and the feed amount is increased. You can adjust. At this time, if the operation member side connecting member 91 that has been in the adjustment position by tightening the lock tool 94 is fixed to the operation member 63, the adjustment screw 83 is applied to the rotation stopper stopper 98 by this fixing operation. The interlocking saddle side connecting member 81 that is fixed and in the adjustment position can be fixed to the operating member side connecting member 91.
[0047]
[Another embodiment]
In addition to employing the arm-shaped operation member 63 as in the above embodiment, operation members having various shapes such as a fan shape or a circular shape in a direction along the rotation axis may be employed. When the sector shape or the circular shape is adopted, the object of the present invention can be achieved if the interlocking saddle side connecting member 81 and the operating member side connecting member 91 are connected so as to be freely adjustable in position change in the radial direction of the operating member.
[Brief description of the drawings]
[Fig. 1] Side view of the entire riding rice transplanter with fertilizer application
[Fig. 2] Plan view of the entire riding rice transplanter with fertilizer application
Fig. 3 Rear view of fertilizer application equipment
FIG. 4 is a plan view of the intake duct
FIG. 5 is a side view of the fertilizer feeding device.
FIG. 6 is a side view of a coarse adjustment mechanism and a fine adjustment mechanism.
FIG. 7 is a perspective view of the coarse adjustment mechanism and the fine adjustment mechanism in an exploded state.
8A is a cross-sectional view showing a state in which the fine adjustment mechanism is adjusted in one direction, and FIG. 8B is a cross-sectional view showing a state in which the fine adjustment mechanism is adjusted in the other direction.
FIG. 9 is a cross-sectional view showing the interlocking state of the operating shaft and the operating member.
FIG. 10 is a side view of a drive pitch adjusting mechanism.
[Explanation of symbols]
42 Fertilizer feed roll
63 Operation member
72 Crank body
72a Rotating shaft core of crank body
74 Linkage
80 Fine adjustment mechanism
81 Interlocking side connection member
82 Adjustment screw
90 Coarse adjustment mechanism
91 Operation member side connecting member
94 Locking device
98 Stopper stopper
100 Drive pitch adjustment mechanism

Claims

This is a fertilizer for rice transplanters equipped with a reciprocating operation member that rotates a fertilizer feeding roll, and an interlocking rod that converts the rotational driving force of a driveable crank body into reciprocating power and transmits it to the operation member. And
An operation member side coupling member and an interlocking rod side coupling member that are interposed between the operation member and the interlocking rod and interlock the operation member and the interlocking rod;
A coarse adjustment mechanism for connecting the operating member side connecting member to the operating member in a radial direction of the operating member at a large adjustment pitch so that the position can be freely adjusted, and the interlocking rod side connecting member to the operating member side connecting member On the other hand, a rice transplanter provided with a fine adjustment mechanism for changing the position of the operation member side connection member in the radial direction of the operation member by connecting the operation member in the radial direction of the operation member so that the position change can be freely adjusted. Fertilizer.

The coarse adjustment mechanism is provided with a lock device for fastening and fixing the operation member side connecting member to the operation member, and the adjustment screw of the fine adjustment mechanism is fixed to the rotation stopper by the lock operation of the lock device. 2. The fertilizer application for rice transplanters according to claim 1, which is configured as described above.

The fertilizer for rice transplanters according to claim 1 or 2, wherein the crank body is provided with a drive pitch adjusting mechanism for changing a connection position of the interlocking rod in a perspective direction with respect to the crank body rotation axis.