JP2004105014A - Granule discharging machine - Google Patents

Granule discharging machine Download PDF

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Publication number
JP2004105014A
JP2004105014A JP2002268419A JP2002268419A JP2004105014A JP 2004105014 A JP2004105014 A JP 2004105014A JP 2002268419 A JP2002268419 A JP 2002268419A JP 2002268419 A JP2002268419 A JP 2002268419A JP 2004105014 A JP2004105014 A JP 2004105014A
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Prior art keywords
fertilizer
transmission
feeding
shaft
powder
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JP4089364B2 (en
Inventor
Takahide Shiozaki
塩崎　孝秀
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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  • Transplanting Machines (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that vibration is readily produced in the vertical direction in a machine body by reciprocating operation of a shaking rod in the vertical direction and the amount of delivered granule becomes unstable because the habitability of an operator on board a traveling car body is deteriorated or the transmission to a granule delivering part is not smoothly carried out in a granule discharging machine. <P>SOLUTION: The granule discharging machine is composed so that power from an engine 20 is branched into a seedling planting part 4 and a fertilizer delivering part 61 and transmitted thereto in a planting clutch case 25 to be a transmission branching part provided at the rear of a traveling car body 2 on the lower side of the fertilizer delivering part. Furthermore, the shaking rod 132 on the driving side extending from the planting clutch case 25 in the vertical direction is subjected to reciprocating operation in the vertical direction to transmit the power from the engine 20 to the fertilizer delivering part. The transmission speed to the fertilizer delivering part is increased by an acceleration transmission part composed of a driving gear 147 and a driven gear 148 provided in a transmission route from the shaking rod 132 on the driving side to the fertilizer delivering part 61. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
この発明は、上下方向に延びる揺動ロッドを上下往復作動させて粉粒体繰出部へ伝動する構成の施肥装置、播種装置あるいは薬剤散布装置等を備える粉粒体吐出機の技術分野に属する。
【０００２】
【従来の技術】
従来、原動機を備える走行車体の後側に苗植付部を設けると共に、走行車体の後部上側で苗植付部の前側に粉粒体貯留タンク及び該タンク内の粉粒体を繰り出す複数の粉粒体繰出部を設け、原動機からの動力を走行車体の後部で粉粒体繰出部の下側に設けた伝動分岐部で粉粒体繰出部へ分岐して伝動すると共に、伝動分岐部から上下方向に延びる揺動ロッドを上下方向に往復作動させて粉粒体繰出部へ伝動する構成の苗移植機（粉粒体吐出機）が知られている。そして、その苗移植機（粉粒体吐出機）において、同じ回転方向で伝動する一対の一方向クラッチのうちの一方へ逆転伝達機構を介して伝動することにより、前記揺動ロッドからの往復作動で前記一対の一方向クラッチへ互いに逆方向の動力が伝達されて前記往復作動における往作動及び復作動を共に何れかの一方向クラッチで伝動する構成も知られている（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２０００ー２７０６３８号公報
【０００４】
【発明が解決しようとする課題】
上記従来技術の粉粒体吐出機においては、上下方向に延びる揺動ロッドを上下方向に往復作動させて粉粒体繰出部へ伝動する構成となっているので、揺動ロッドの上下方向に往復作動により機体に上下方向の振動が発生しやすく、走行車体に搭乗するオペレ−タの居住性が悪化したり、粉粒体繰出部への伝動が円滑に行われないために粉粒体の繰出量が不安定になったりするおそれがある。
【０００５】
【課題を解決するための手段】
この発明は、上記課題を解決するべく次の技術的手段を講じた。
すなわち、請求項１に係る発明は、原動機２０を備える走行車体２の後側に苗植付部４を設けると共に、走行車体２の後部上側で苗植付部４の前側に粉粒体貯留タンク６０及び該タンク６０内の粉粒体を繰り出す複数の粉粒体繰出部６１を設け、原動機２０からの動力を走行車体２の後部で粉粒体繰出部６１の下側に設けた伝動分岐部２５で苗植付部４と粉粒体繰出部６１とへ分岐して伝動すると共に、伝動分岐部２５から上下方向に延びる揺動ロッド１３２を上下方向に往復作動させて粉粒体繰出部６１へ伝動する構成の苗移植機において、前記揺動ロッド１３２から粉粒体繰出部６１への伝動経路の間に増速する増速伝動部を設けたことを特徴とする粉粒体吐出機とした。
【０００６】
従って、請求項１に記載の粉粒体吐出機は、走行車体に設けた原動機からの動力により、苗植付部を作動させて苗を植え付けると共に、粉粒体繰出部を作動させて粉粒体貯留タンク内の粉粒体を繰り出し圃場に施用する。粉粒体繰出部へは、粉粒体繰出部の下側に設けた伝動分岐部から上下方向に延びる揺動ロッドの上下方向の往復作動により上側へ伝動される。また、揺動ロッドから増速伝動部を介して粉粒体繰出部へ伝動される。
【０００７】
また、請求項２に係る発明は、同じ回転方向で伝動する一対の一方向クラッチ１３６Ｌ，１３６Ｒのうちの一方１３６Ｒへ逆転伝達機構を介して伝動することにより、揺動ロッド１３２からの往復作動で前記一対の一方向クラッチ１３６Ｌ，１３６Ｒへ互いに逆方向の動力が伝達されて前記往復作動における往作動及び復作動を共に何れかの一方向クラッチ１３６Ｌ，１３６Ｒで伝動する構成とし、前記一対の一方向クラッチ１３６Ｌ，１３６Ｒより伝動下手側で複数の粉粒体繰出部６１への伝動分岐部より伝動上手側に増速伝動部を設けたことを特徴とする請求項１に記載の粉粒体吐出機とした。
【０００８】
従って、請求項２に記載の粉粒体吐出機は、請求項１に記載の粉粒体吐出機の作用に加えて、一方の一方向クラッチへ揺動ロッドからの往復作動を逆転伝達機構を介して伝動することにより、前記往復作動における往作動及び復作動を共に一対の一方向クラッチの何れかで伝動し、揺動ロッドからの往復作動を一対の一方向クラッチにより連続的に回転伝動する。そして、一対の一方向クラッチによる連続的な回転伝動が増速伝動部へ伝動され、増速伝動部から伝動を分岐して複数の粉粒体繰出部へ伝動される。
【０００９】
【発明の効果】
よって、請求項１に記載の粉粒体吐出機は、増速伝動部を介して粉粒体繰出部へ伝動する分、揺動ロッドの上下方向の往復作動の作動ストロ−クが比較的小さくても所望の伝動速度で粉粒体繰出部へ伝動することができるので、揺動ロッドの上下方向の往復作動による機体に上下方向の振動を抑えることができ、走行車体に搭乗するオペレ−タの居住性を良好に維持すると共に、粉粒体繰出部による粉粒体の繰出量を所望に維持しつつ粉粒体の繰出量を安定させることができる。
【００１０】
また、請求項２に記載の粉粒体吐出機は、請求項１に記載の粉粒体吐出機の効果に加えて、一対の一方向クラッチにより揺動ロッドからの往復作動を連続的に伝動して粉粒体繰出部による粉粒体の繰出を連続的に行うことができると共に、一対の一方向クラッチのうちの何れによる伝動も増速伝動部へ伝動され、また複数の粉粒体繰出部の何れへの伝動も前記増速伝動部を介して伝動されるから、複数の粉粒体繰出部の各々への伝動速度が均一化すると共に安定し、各粉粒体繰出部の粉粒体の繰出量を均一に安定させることができる。
【００１１】
【発明の実施の形態】
この発明の実施の一形態を図面に基づき説明する。
図１及び図２は、施肥装置付きの乗用型の田植機１を示すものであり、この乗用型の田植機１は、走行車体２の後側に昇降リンク装置３を介して苗植付部４が昇降可能に装着され、走行車体２の後部上側に施肥装置５の本体部分が設けられている。
【００１２】
走行車体２は、駆動輪である各左右一対の前輪１０，１０及び後輪１１，１１を備えた四輪駆動車両であって、機体の前部にミッションケース１２が配置され、そのミッションケース１２の左右側方に前輪ファイナルケース１３，１３が設けられ、該前輪ファイナルケースの変向可能な前輪支持部から外向きに突出する前輪車軸に前輪１０，１０が取り付けられている。また、ミッションケース１２の背面部にメインフレーム１５の前端部が固着されており、そのメインフレーム１５の後端左右中央部に前後水平に設けた後輪ローリング軸を支点にして後輪ギヤケース１８，１８がローリング自在に支持され、その後輪ギヤケース１８，１８から外向きに突出する後輪車軸に後輪１１，１１が取り付けられている。
【００１３】
原動機となるエンジン２０はメインフレーム１５の上に搭載されており、該エンジンの回転動力が、第一ベルト伝動装置２１及び第二ベルト伝動装置２３を介してミッションケース１２に伝達される。ミッションケース１２に伝達された回転動力は、該ケース内のトランスミッションにて変速された後、走行動力と外部取出動力に分離して取り出される。そして、走行動力は、一部が前輪ファイナルケース１３，１３に伝達されて前輪１０，１０を駆動すると共に、残りが後輪ギヤケース１８，１８に伝達されて後輪１１，１１を駆動する。また、外部取出動力は、走行車体２の後部に設けた植付クラッチケース２５に伝達され、それから植付伝動軸２６によって苗植付部４へ伝動されるとともに、施肥伝動機構２７によって施肥装置５へ伝動される。
【００１４】
エンジン２０の上部はエンジンカバー３０で覆われており、その上に座席３１が設置されている。座席３１の前方には各種操作機構を内蔵するボンネット３２があり、その上方に前輪１０，１０を操向操作するハンドル３４が設けられている。エンジンカバー３０及びボンネット３２の下端左右両側は水平状のフロアステップ３５になっている。フロアステップ３５の後部は、後輪フェンダを兼ねるリヤステップ３６となっている。また、走行車体２の前部左右両側には、補給用の苗を載せておく予備苗載台３８，３８が機体よりも側方に張り出す位置と内側に収納した位置とに回動可能に設けられている。
【００１５】
昇降リンク装置３は平行リンク構成であって、１本の上リンク４０と左右一対の下リンク４１，４１を備えている。これらリンク４０，４１，４１は、その基部側がメインフレーム１５の後端部に立設した背面視門形のリンクベースフレーム４２に回動自在に取り付けられ、その先端側に縦リンク４３が連結されている。そして、縦リンク４３の下端部に苗植付部４に回転自在に支承された連結軸４４が挿入連結され、連結軸４４を中心として苗植付部４がローリング自在に連結されている。メインフレーム１５に固着した支持部材と上リンク４０に一体形成したスイングアーム４５の先端部との間に昇降油圧シリンダ４６が設けられており、該シリンダを油圧で伸縮させることにより、上リンク４０が上下に回動し、苗植付部４がほぼ一定姿勢のまま昇降する。
【００１６】
苗植付部４は６条植の構成で、フレームを兼ねる伝動ケース５０、マット苗を載せて左右往復動し苗を一株分づつ各条の苗取出口５１ａ，…に供給するとともに横一列分の苗を全て苗取出口５１ａ，…に供給すると苗送りベルト５１ｂ，…により苗を下方に移送する苗載台５１、苗取出口５１ａ，…に供給された苗を苗植付具５２ａで圃場に植付ける苗植付装置５２，…、次行程における機体進路を表土面に線引きする左右一対の線引きマーカ５３，５３等を備えている。伝動ケース５０内には、苗植付装置５２，…の作動を２条単位で入・切する計３個の植付畦クラッチ５４（１・２），５４（３・４），５４（５・６）が設けられている。これらの植付畦クラッチは、後述する畦クラッチレバー１１０（１・２），１１０（３・４），１１０（５・６）で入・切操作する。
【００１７】
苗植付部４の下部にはセンターフロート５５及びサイドフロート５６，５６が設けられている。これらフロートを圃場の泥面に接地させた状態で機体を進行させると、フロートが泥面を整地しつつ滑走し、その整地跡に苗植付装置５２，…により苗が植付けられる。各フロート５５，５６，５６は圃場表土面の凹凸に応じて前端側が上下動するように回動自在に取り付けられており、植付作業時にはセンターフロート５５の前部の上下動が上下動検出機構５７により検出され、その検出結果に応じ前記昇降油圧シリンダ４６を制御する油圧バルブを切り替えて苗植付部４を昇降させることにより、苗の植付深さを常に一定に維持する。
【００１８】
施肥装置５は、肥料貯留タンク（粉粒体貯留タンク）６０に貯留されている肥料（粉粒体）を肥料繰出部（粉粒体繰出部）６１，…によって一定量づつ繰り出し、その肥料を肥料移送ホース（粉粒体移送ホース）６２，…でフロート５５，５６，５６の左右両側に取り付けた施肥ガイド６３，…まで導き、施肥ガイド６３，…の前側に設けた作溝体６４，…によって苗植付条の側部近傍に形成される施肥溝内に吐出するようになっている。モータ６６で駆動のブロア６７で発生させた圧力風を左右方向に長いエアチャンバ６８を経由して肥料移送ホース６２，…内に吹き込み、肥料移送ホース６２，…内の肥料を苗植付部側の肥料吐出口へ強制的に移送するようになっている。
【００１９】
以下、図３〜図１２に示す施肥装置本体部の各部の構成について説明する。
各条が一体に成形された肥料貯留タンク６０は、上部に後側を支点にして開閉可能な蓋６０ａが取り付けられている。肥料貯留タンク６０の下部は各条ごとに漏斗状になっており、その下部が肥料繰出部６１，…の上端に接続されている。肥料貯留タンク６０はその背面下部で、左右方向に長い施肥フレーム７０から上方に突設した支持板７１に回動自在に取り付けられており、図３で二点鎖線で示すように、肥料繰出部６１，…から分離して後方に回動させられるようになっている。肥料貯留タンク６０の下部を肥料繰出部６１，…の上端に接続した通常位置では、係止具７２により肥料貯留タンク６０を固定する。
【００２０】
肥料貯留タンク６０の下部には、肥料貯留タンク６０から肥料繰出部６１への肥料供給を停止する場合や、肥料貯留タンク６０を回動させたときに中の肥料が流出するのを防ぐ開閉シャッタ７３が設けられている。この開閉シャッタ７３は、スライド支持部材７４にスライド自在に支持されていて、把手７３ａをつかんで図６で実線で示す閉じた位置と二点鎖線で示す開いた位置とにスライドさせるようになっている。開閉シャッタ７３を閉じた状態にしないと係止具７２を外せないので、誤ってシャッタ７３を開けたまま肥料貯留タンク６０を回動させて肥料を流出させることの防止になっている。
【００２１】
開閉シャッタ７３の下側には、肥料貯留タンク６０を肥料繰出部６１に接続したときに肥料繰出部６１の上部に挿入される筒状部７５が形成されている。筒状部７５と肥料繰出部６１の上部との間に隙間が形成されるようになっている。肥料貯留タンク６０に肥料が入っている状態で開閉シャッタ７３を閉じて肥料貯留タンク６０を回動させるとき、肥料繰出部６１の上端よりも上側かつ開閉シャッタ７３よりも下側に位置していた肥料が前記隙間に流入することにより、肥料繰出部６１から肥料が溢れ落ちるのを防いでいる。
【００２２】
肥料貯留タンク６０下端部には、肥料貯留タンク６０を肥料繰出部６１に接続するときの緩衝用の弾性体７６ａと両者間の気密保持のためのパッキン７６ｂとが取り付けられている。パッキン７６ｂは肥料繰出部６１の上端部分とその少し下方の部分の２箇所で肥料繰出部６１のケースと接触するようになっている。このため、肥料繰出部６１のケースとパッキン７６ｂとの間に空間が有り、肥料貯留タンク６０と肥料繰出部６１との位置関係が多少ずれてもこの空間で吸収され、両者間の気密性が損われない。
【００２３】
肥料繰出部６１は、肥料貯留タンク６０内の肥料を下方に繰り出す繰出ロール７７を内蔵している。繰出ロール７７は、外周部に肥料が入り込む複数本（図示例では６本）の溝７７ａ，…が形成された回転体で、左右方向に設けた繰出軸７８の角軸部７８ａ（図示例は四角軸）にそれぞれ一体回転するように嵌合している。繰出ロール７７が図６の矢印方向に回転することにより、肥料貯留タンク６０から落下供給される肥料が溝７７ａに収容されて下方に搬送され、下端の繰出口６１ａから繰り出される。
【００２４】
繰出ロール７７の前側には該繰出ロールの外周面に摺接するブラシ７９が着脱自在に設けられており、このブラシ７９が溝７７ａから溢れる肥料を受けて下方へ落下するのを規制することにより、溝７７ａに肥料が摺り切り状態で収容され、肥料繰出量を一定に保持するようになっている。
【００２５】
肥料繰出部６１の繰出口６１ａには、若干後ろ下がりで略前後方向に連通する接続管８０が設けられている。この接続管８０の後端に前記肥料移送ホース６２のホッパ側の端部が接続される。一方、接続管８０の前端部はエアチャンバ６８の背面部に挿入連結されている。エアチャンバ６８の左端部はエア切替管８１を介してブロア６７に接続されており、該ブロアからの圧力風がエアチャンバ６８を経由し管状部６１ｂから肥料移送ホース６２に吹き込まれるようになっている。
【００２６】
肥料移送ホース６２は、接続管８０の少し後方の位置で、後述する左右方向に長い肥料回収管８５に固定されたホースホルダ８２により下から支えられている。
また、繰出ロール７７の後側には、下端が繰出ロール７７の上端よりも下位になる位置に肥料排出口８３が形成されている。この肥料排出口８３は後ろ下がりに傾斜しており、その中間部に上端側を支点にして開閉自在な排出シャッタ８４が取り付けられている。そして、各肥料繰出部の肥料排出口８３と肥料繰出部６１の後方に設けた左右方向に長い肥料回収管８５とが肥料排出管８３ａで接続されている。
【００２７】
肥料回収管８５の左端部は、前記エア切替管８１を介してブロア６７に接続されている。エア切替管８１は二股状の管であって、一方にエアチャンバ６８が接続され、他方に肥料回収管８５が接続されている。エア切替管８１にはエア切替シャッタ８６が設けられ、ブロア６７から吹き出されるエアをエアチャンバ側に供給する状態と肥料回収管側に供給する状態とに切り替えられようになっている。肥料回収管８５の右端部は下向きに屈曲し、その先端部にフレキシブルな回収シュート８７が接続されている。
【００２８】
図７は排出シャッタ及びエア切替シャッタの開閉機構を示す図である。回収シュート８７の近傍に肥料回収レバー９０が回動自在に設けられている。この肥料回収レバー９０の回動支点軸９０ａと同軸上に設けられた左右方向のシャッタ開閉伝達軸９１には扇形プレート９２が取り付けられており、この扇形プレート９２に形成された円弧状の長穴９２ａに、肥料回収レバー９０に固着されたピン９０ｂが遊嵌している。シャッタ開閉伝達軸９１には各肥料繰出部ごとに開閉ギヤ９３が取り付けられ、該ギヤ９３が排出シャッタ８４の回動軸８４ａに取り付けた半円形ギヤ９４と噛み合っている（図６参照）。また、肥料回収レバー９０には、エア切替ワイヤ９５の一端が繋がれている。エア切替ワイヤ９５の他端は、エア切替シャッタ８６の回動軸８６ａに取り付けたアーム９６に引張りスプリング９７を介して繋がれている。
【００２９】
肥料回収レバー９０を回動操作すると、エア切替ワイヤ９５が引かれてエア切替シャッタ８６を切り替え、ブロア６７から吹き出される圧力風が肥料回収管８５に供給されるようになる。肥料回収レバー９０の回動操作量が少ないうちは、ピン９０ｂが長穴９２ａの中を移動するだけにすぎないので、シャッタ開閉伝達軸９１は回動しない。しかしながら、肥料回収レバー９０を一定量以上回動操作すると、ピン９０ｂが扇形プレート９２に係合し、シャッタ開閉伝達軸９１が回動する。これにより、排出シャッタ８４，…が開き、肥料貯留タンク６０内の肥料が肥料回収管８５に排出される。尚、開閉ギヤ９３，…は条ごとに位相をずらして設けられており、ブロアに近い側の肥料繰出部から順に排出シャッタ８４が開くようになっている。これにより、一度の多量の肥料が肥料回収管８５内に流れ込むのを防ぎ、肥料回収管８５内を肥料が円滑に流れ、同管内で肥料詰まりが生じないようにしている。
【００３０】
肥料回収レバー９０はレバーガイド９８に沿って回動操作するようになっている。このレバーガイド９８にはガイド穴９８ａ，９８ｂが形成されており、肥料回収レバー９０の撓みを利用して肥料回収レバー９０の係合部（図示せず）をガイド穴９８ａ，９８ｂに係合させることにより、肥料回収レバー９０をエア切替シャッタ８６だけが切り替えられる位置Ｐ１と、エア切替シャッタ８６及び排出シャッタ８４，…の両方が切り替えられる位置Ｐ２とに固定することができるようになっている。
【００３１】
次に、施肥伝動機構２７について説明する。尚、施肥伝動機構２７は、左から数えて第４条と第５条の肥料繰出部６１の間に配置されている。
前記植付クラッチケース２５の後面から突出するクランクア−ム１３１が出力回転し、該クランクア−ム１３１に連結した上下方向に延びる駆動側揺動ロッド１３２の上下方向の往復動作が上側のカウンタア−ム１３３に伝動される。尚、カウンタア−ム１３３は、側面視でくの字形状になっており、前記駆動側揺動ロッド１３２と後記する従動側揺動ロッド１３４とが連結されている。そして、カウンタア−ム１３３の往復揺動による従動側揺動ロッド１３４の前後方向の往復動作がカウンタア−ム１３３の後側の繰出入力ア−ム１３５ヘ伝動され、この繰出入力ア−ム１３５の前後方向の往復作動が左側の一方向クラッチ１３６Ｌへ伝動される。尚、一方向クラッチ１３６Ｌ，１３６Ｒは、左右に２個設けられており、左右方向の同一の一方向クラッチ軸１３７回りに回動する構成となっており、外環部１３８Ｌ，１３８Ｒと前記一方向クラッチ軸１３７との間に複数の伝動用ロ−ラ１３９を備えたロ−ラクラッチであり、外環部１３８Ｌ，１３８Ｒの回動を一方向クラッチ軸１３７に伝達するようになっている。従って、左側の一方向クラッチ１３６Ｌは、外環部１３８Ｌが繰出入力ア−ム１３５と一体に設けられ、繰出入力ア−ム１３５の前後方向の往復作動における一方向となる外環部１３８Ｌの回動を一方向クラッチ軸１３７に伝達するようになっている。尚、左右の一方向クラッチ１３６Ｌ，１３６Ｒは、それぞれの外環部１３８Ｌ，１３８Ｒの同じ方向の回動で一方向クラッチ軸１３７に伝達するようになっている。
【００３２】
左側の一方向クラッチ１３６Ｌの外環部１３８Ｌの上側には該外環部１３８Ｌと一体の第一ア−ム１４０を設け、この第一ア−ム１４０と前側にある第二ア−ム１４１とを第一リンク１４２により連結している。第二ア−ム１４１は、左右方向の中継軸１４３と一体回転する構成となっており、該中継軸１４３の下側で前記第一リンク１４２を連結するべく中継軸１４３から下側に延びている。第二ア−ム１４１の右側には前記中継軸１４３と一体回転する第三ア−ム１４４を中継軸１４３から上側に延設しており、この第三ア−ム１４４は第二ア−ム１４１と一体回転する。第三ア−ム１４４の中継軸１４３より上側の位置には第二リンク１４５を連結しており、この第二リンク１４５の他端側には第四ア−ム１４６を連結している。この第四ア−ム１４６は、右側の一方向クラッチ１３６Ｒの外環部１３８Ｒの上側に該外環部１３８Ｒと一体に設けられている。従って、左側の一方向クラッチ１３６Ｌの外環部１３８Ｌの往復回動により第一ア−ム１４０が前後方向に往復回動し、第一リンク１４２を介して第二ア−ム１４１へ伝達され、該第二ア−ム１４１が第一ア−ム１４０と同期して同じ側に前後方向に往復回動する。第三ア−ム１４４は、中継軸１４３に対して第二ア−ム１４１とは上下反対側（上側）に延びているので、その第二リンク１４５との連結位置では第二ア−ム１４１の往復回動と同期して第二ア−ム１４１の第一リンク１４２の連結位置における前後方向の往復動とは前後反対側に往復揺動することになる。そして、第三ア−ム１４４の往復動が第二リンク１４５を介して第四ア−ム１４６へ伝達され、第四ア−ム１４６が第三ア−ム１４４と同期して同じ側に前後方向に往復回動するので、右側の一方向クラッチ１３６Ｒの外環部１３８Ｒは、左側の一方向クラッチ１３６Ｌの外環部１３８Ｌの往復回動と同期して反対側に回動する。従って、前記第一ア−ム１４０乃至第四ア−ム１４６、第一リンク１４２及び第二リンク１４５により、逆転伝達機構を構成している。
【００３３】
よって、前記逆転伝達機構により左右の一方向クラッチ１３６Ｌ，１３６Ｒの外環部１３８Ｌ，１３８Ｒが互いに反対側に回動するため、繰出入力ア−ム１３５の往復作動において左右の一方向クラッチ１３６Ｌ，１３６Ｒの何れか一方が一方向クラッチ軸１３７を同じ一方向（正転方向）に回転させることとなり、常時、連続的に一方向クラッチ軸１３７を駆動することができる。
【００３４】
左右の一方向クラッチ１３６Ｌ，１３６Ｒの間には一方向クラッチ軸１３７とキ−１４７ａにより一体回転する駆動ギヤ１４７を設け、この駆動ギヤ１４７が後述する繰出駆動軸１０５と一体回転する従動ギヤ１４８に噛み合う。従って、一方向クラッチ軸１３７の連続回転が繰出駆動軸１０５へ伝動される。尚、駆動ギヤ１４７の歯数は、従動ギヤ１４８の歯数より多く、従動ギヤ１４８の歯数の約２倍となっている。従って、駆動ギヤ１４７及び従動ギヤ１４８により、回転速度を増速して伝動する増速伝動部を構成している。尚、左右の一方向クラッチ１３６Ｌ，１３６Ｒのそれぞれの外環部１３８Ｌ，１３８Ｒの外周には、一方向クラッチ１３６Ｌ，１３６Ｒの伝動用ロ−ラ１３９部分へ肥料や塵等の異物が混入しないように駆動ギヤ１４７の基部内径部との隙間を塞ぐシール材１４９を設けている。尚、左右の一方向クラッチ１３６Ｌ，１３６Ｒの伝動用ロ−ラ１３９の駆動ギヤ１４７とは反対側にも、外環部１３８Ｌ，１３８Ｒの内面と一方向クラッチ軸１３７の外面とに接触するように外側シール材１４９ａを設けている。
【００３５】
従って、左右の一方向クラッチ１３６Ｌ，１３６Ｒの間に駆動ギヤ１４７を設けているので、左右何れの一方向クラッチ１３６Ｌ，１３６Ｒが伝動状態であっても伝動する一方向クラッチ１３６Ｌ，１３６Ｒと駆動ギヤ１４７並びにキ−１４７ａとが近いため、左右一対の一方向クラッチ１３６Ｌ，１３６Ｒの左右一方側に駆動ギヤ１４７を配置した場合と比較して、一方向クラッチ１３６Ｌ，１３６Ｒにより伝動される動力を駆動ギヤ１４７へ適正な速度で精度良く伝動することができ、肥料繰出部６１の肥料の繰出量を適正に安定させることができる。また、一方向クラッチ１３６Ｌ，１３６Ｒの外環部１３８Ｌ，１３８Ｒと駆動ギヤ１４７の基部内径部との隙間を塞ぐシール材１４９が一方向クラッチ軸１３７方向において前記外環部１３８Ｌ，１３８Ｒと重複する構成となるので、一方向クラッチ１３６Ｌ，１３６Ｒの伝動用ロ−ラ１３９と駆動ギヤ１４７との左右方向（一方向クラッチ軸１３７方向）の位置を近づけることができ、一方向クラッチ１３６Ｌ，１３６Ｒにより伝動される動力を駆動ギヤ１４７へ適正な速度でより精度良く伝動することができる。従来の一般的な一方向クラッチを使用すると、この一方向クラッチは、図１０に示す外側シール材１４９ａのように、伝動用ロ−ラの外側（一方向クラッチ軸方向の外側）にシール材を設けているので、そのシール材の一方向クラッチ軸方向の厚み分駆動ギヤ並びにキ−と伝動用ロ−ラとの間隔を設けなければならず、駆動ギヤ１４７の回転作動速度が一方向クラッチ軸の支持におけるがたの影響を受けやすくなって不適正になったり不安定になったりすることが考えられる。
【００３６】
逆転伝達機構の左右には、該逆転伝達機構を支持する逆転用支持部材１５０Ｌ，１５０Ｒをそれぞれ設けている。この逆転用支持部材１５０Ｌ，１５０Ｒは、鋳物により構成され、施肥装置５の基部フレ−ム１５１に締付ボルト１５２にて固定されており、一方向クラッチ軸１３７、繰出駆動軸１０５及び逆転伝達機構の中継軸１４３を軸受するボ−ルベアリング１５３、１５４、１５５をそれぞれ備えている。尚、繰出駆動軸１０５は、逆転用支持部材１５０Ｌ，１５０Ｒを貫通して左右に長く設けられている。従って、前記一方向クラッチ軸１３７、繰出駆動軸１０５及び中継軸１４３は、左右の逆転用支持部材１５０Ｌ，１５０Ｒにより左右で軸受され、一方向クラッチ１３７、逆転伝達機構及び駆動ギヤ１４７並びに従動ギヤ１４８等の施肥伝動機構２７の伝動部の左右で両持支持されているので、支持剛性が向上し、繰出伝動が適正に精度良く行われる。特に、図９及び図１０に示すように、第二ア−ム１４１は左側の逆転用支持部材１５０Ｌに近づけて配置され、第三ア−ム１４４は右側の逆転用支持部材１５０Ｒに近づけて配置されているので、中継軸１４３におけるこれらのア−ム１４１，１４４から受ける作動荷重を左右それぞれのボ−ルベアリング１５５がしっかりと受け、前記ア−ム１４１，１４４の伝達精度の向上を図ることができる。
【００３７】
左側の逆転用支持部材１５０Ｌの左側には、繰出量調節機構１５６を設けている。この繰出量調節機構１５６は、前部に繰出量調節ねじ部分１５７を備える繰出量調節軸１５８と該軸１５８の後部に取り付けた繰出量調節ハンドル１５９とを備えている。繰出量調節軸１５８の中途部には該軸１５８が回動できるように外嵌された軸支持部材１６０を設けており、この軸支持部材１６０に固着した左右方向の軸支持支点軸１６０ａを左側の逆転用支持部材１５０Ｌに挿入した構成となっている。従って、繰出量調節機構１５６は、前記軸支持支点軸１６０ａ回りに回動可能に設けられている。尚、軸支持支点軸１６０ａは、繰出量調節軸１５８の右側で左側の逆転用支持部材１５０Ｌに支持されると共に、左側で格別に設けた調節軸支持フレ−ム１６１に支持されている。従って、繰出量調節機構１５６は、軸支持支点軸１６０ａ部分において繰出量調節軸１５８の左右で両持支持された構成となっている。
【００３８】
カウンタア−ム１３３の回動軸１６２を支持するカウンタ支持部材１６３の上部には、雌ねじ部分１６４ａを備える主要部が側面視六角形の位置調節体１６４を左右方向の軸回りに回動可能に設けている。尚、カウンタ支持部材１６３の後端部には左右方向の同一直線上に軸心が位置するカウンタ支点軸１６５を左右それぞれ設け、カウンタ支持部材１６３は、このカウンタ支点軸１６５回りに基部フレ−ム１５１に対して回動可能に設けられている。尚、基部フレ−ム１５１にはカウンタ支点軸１６５を装着する孔１６６を複数個（４個）前後に配列しており、型式、仕様等により施肥装置５のスペースが制限されるようなときにはカウンタ支点軸１６５の前後位置を変更して対応し、カウンタ支持部材１６３及び基部フレ−ム１５１等の部品の共用化を図っている。カウンタ支点軸１６５部分は基部フレ−ム１５１とは別の補強部材１６７により機体に支持されており、カウンタ支点軸１６５の位置が変わってもカウンタ支点軸１６５部分に補強部材１６７を取り付けて剛性を保ち、カウンタ支点軸１６５の位置が変化しにくいようにしている。前記位置調節体１６４の雌ねじ部分１６４ａに繰出量調節軸１５８の前部の繰出量調節ねじ部分１５７が螺合しており、繰出量調節軸１５８の回動により位置調節体１６４が前後に移動してカウンタ支持部材１６３がカウンタ支点軸１６５回りに回動し、カウンタア−ム１３３の回動軸１６２を前上方あるいは後下方に移動させる構成となっている。従って、カウンタア−ム１３３の回動軸１６２を移動させることにより、カウンタア−ム１３３の姿勢が変化し、例えば前記回動軸１６２を前上方へ移動させると、駆動側揺動ロッド１３２及び従動側揺動ロッド１３４が共にカウンタア−ム１３３と直角に近い状態で交差するように姿勢が変更されるので、駆動側揺動ロッド１３２で作動するカウンタア−ム１３３及び従動側揺動ロッド１３４で作動する繰出入力ア−ム１３５の揺動ストロ−ク（揺動角）がそれぞれ大きくなり、一方向クラッチ軸１３７ひいては繰出駆動軸１０５の回転速度が大きくなって、肥料繰出部６１による繰出量が多くなる。一方、前記回動軸１６２を後下方へ移動させると、駆動側揺動ロッド１３２及び従動側揺動ロッド１３４が共にカウンタア−ム１３３と直角からかけ離れた状態で交差するように姿勢が変更されるので、駆動側揺動ロッド１３２で作動するカウンタア−ム１３３及び従動側揺動ロッド１３４で作動する繰出入力ア−ム１３５の揺動ストロ−ク（揺動角）がそれぞれ小さくなり、一方向クラッチ軸１３７ひいては繰出駆動軸１０５の回転速度が小さくなって、肥料繰出部６１による繰出量が多くなる。従って、繰出量調節ハンドル１５９を操作して繰出量調節軸１５８を回動させることにより、施肥装置５の肥料の繰出量を連続的に変更して調節できるようになっている。
【００３９】
カウンタ支持部材１６３は、左右のプレ−ト部１６３ａと該左右のプレ−ト部１６３ａを繋ぐ前部プレ−ト部１６３ｂとにより平面視コの字状に構成され、前記左右のプレ−ト部１６３ａに位置調節体１６４、カウンタア−ム１３３の回動軸１６２及びカウンタ支点軸１６５を軸受するボ−ルベアリング１６８，１６９，１７０をそれぞれ設けている。従って、位置調節体１６４及びカウンタア−ム１３３の回動軸１６２は左右のボ−ルベアリング１６８，１６９により両持支持され、左右のカウンタ支点軸１６５は左右に配置したそれぞれのボ−ルベアリング１７０により左右別個に支持されている。よって、繰出量調節軸１５８の繰出量調節ねじ部分１５７と位置調節体１６４の雌ねじ部分１６４ａとの螺合部は螺合しているためにがたが生じやすく、カウンタ支持部材１６３の回動位置が不安定になる要因となりやすいが、この螺合部の左右にボ−ルベアリング１６８を設けて位置調節体１６４を両持支持しているので、カウンタ支持部材１６３の回動位置の安定を図ることができ、繰出量調節の適正化及び施肥装置５の肥料の繰出量の安定化を図ることができる。尚、図１１に示すように、前記螺合部を位置調節体１６４の左右のボ−ルベアリング１６８の一方（左側のボ−ルベアリング１６８）に近づけて配置しているので、位置調節体１６４における螺合部のカウンタ支持部材１６３に対する位置が変化しにくく、カウンタ支持部材１６３の回動位置の更なる安定化を図ることができる。また、カウンタア−ム１３３は、往復揺動する構成であるので、該ア−ム１３３の回動軸１６２の位置が少しでも変化すると、回動量（揺動量）が変化して肥料繰出部６１の肥料の繰出量が変化しやすい傾向がある。しかしながら、カウンタア−ム１３３の回動軸１６２を左右のボ−ルベアリング１６９により両持支持しているので、カウンタ支持部材１６３に対する前記回動軸１６２の位置が変化しにくく、カウンタア−ム１３３の回動量（揺動量）の安定化を図ることができ、ひいては施肥装置５の肥料の繰出量の安定化を図ることができる。
【００４０】
尚、位置調節体１６４は、左右両端部１６４ｂが丸軸状に構成され、この左右両端部１６４ｂをボ−ルベアリング１６８に嵌合させて左右方向の軸回りに回動可能となっている。前部プレ−ト部１６３ｂの繰出量調節軸１５８の延長線上となる適所には孔１７１を設け、繰出量調節ハンドル１５９の操作により繰出量調節軸１５８の繰出量調節ねじ部分１５７が位置調節体１６４の前側に大きく突出する状態となっても、繰出量調節軸１５８が前記孔１７１を貫通するようにしてカウンタ支持部材１６３と干渉しないようになっている。また、前部プレ−ト部１６３ｂの下部には切欠き１７２を設け、カウンタア−ム１３３が前記切欠き１７２を貫通するようにしている。
【００４１】
繰出量調節軸１５８の軸支持部材１６０より前側の部分には繰出量表示用ねじ部分１７３を設けると共に、該ねじ部分１７３に螺合する雌ねじ部分１７４ａを備える繰出量表示具１７４を設けている。尚、繰出量表示具１７４は、繰出量表示用ねじ部分１７３を覆うカバ−１７５の右側部に設けた長孔部１７６に係合し、この長孔部１７６から一部がカバ−１７５の右側に突出するように設けられ、前記カバ−１７５に対して回動しないように支持されると共に前記長孔部１７６に案内されて繰出量調節軸１５８方向に移動可能に支持され、繰出量調節軸１５８の回動に伴って該軸１５８方向に移動する構成となっている。前記カバ−１７５の長孔部１７６の縁にはこの長孔方向に目盛１７７をつけていると共に、繰出量表示具１７４にはマ−ク１７８をつけており、該マ−ク１７８が指し示す目盛１７７を読みながら作業者が肥料の繰出量を認識したり調節したりするようになっている。
【００４２】
繰出量調節軸１５８は側面視で前上がり姿勢に傾斜して設けられ、繰出量調節軸１５８の前端部に設けた繰出量調節ハンドル１５９を肥料繰出部６１より前側に配置している。従って、作業者は、肥料繰出部６１が邪魔にならずに座席３１に座ったまま、走行車体２側から繰出量調節ハンドル１５９を容易に操作することができる。
【００４３】
繰出駆動軸１０５に伝達された施肥動力は、２条ごとに１組設けられた施肥畦クラッチ１０６，…を介して、繰出駆動軸１０５に回転自在に外嵌する筒軸１０７，…に伝達される。そして、一対の繰出伝動ギヤ１０８ａ，１０８ｂを介して、各筒軸１０７から各条の繰出軸７９へ伝動される。駆動側の繰出伝動ギヤ１０８ａは筒軸１０７に摺動自在に嵌合しており、該ギヤ１０８ａをずらして一対の繰出伝動ギヤ１０８ａ，１０８ｂの噛み合いを解除することができる。つまり、条ごとに施肥作動を入り・切りする単条クラッチ１０８として構成されているのである。
【００４４】
左から数えて第１条と第２条の施肥作動を入・切する施肥畦クラッチ１０６（１・２）及び第３条と第４条の施肥作動を入・切する施肥畦クラッチ１０６（３・４）は、第２条の肥料繰出部６１と第３条の肥料繰出部６１との間隔部にそれぞれ設けられている。第５条と第６条の施肥作動を入・切する施肥畦クラッチ１０６（５・６）は、第６条の肥料繰出部６１の右側すなわち施肥装置の右端に設けられている。これらの施肥畦クラッチを操作する畦クラッチレバー１１０（１・２），１１０（３・４），１１０（５・６）は、先端を前方に突出させて上下に回動操作するように設けられている。左右の後輪１１，１１は平面視で第１条の肥料繰出部６１と第２条の肥料繰出部６１との間隔部及び第５条の肥料繰出部６１と第６条の肥料繰出部６１との間隔部にそれぞれ位置しており、後輪１１，１１と畦クラッチレバー１１０，…とが同じ肥料繰出部間にないように配置されている。
【００４５】
また、左から１条目の施肥作動を入・切する単条クラッチ１０８（１）及び左から２条目の施肥作動を入・切する単条クラッチ１０８（２）は、１条目と２条目の間隔部にそれぞれ設けられている。同様に、単条クラッチ１０８（３）及び単条クラッチ１０８（４）は３条目と４条目の間隔部に設けられ、単条クラッチ１０８（５）及び単条クラッチ１０８（６）は５条目と６条目の間隔部に設けられている。これらの単条クラッチ１０８，…は切替つまみ１１１で操作する。
【００４６】
施肥作業時には、繰出ロール７７を正転（図６の矢印方向）させ、肥料貯留タンク６０の肥料を繰出口６１ａから下方に繰り出す。繰出口６１ａから繰り出された肥料は、管状部６１ｂ及び肥料移送ホース６２内をブロア６７から吹き出される圧力風によって運ばれ、肥料移送ホース６２の先端吐出口から施肥ガイド６３に吐出され圃場に供給される。尚、繰出量調節機構１５６により、繰出駆動軸１０５の回転速度を変更して肥料吐出量を無段階に調節できる。
【００４７】
肥料回収時には、肥料貯留タンク６０の肥料を肥料排出口８３から排出する。排出された肥料は、肥料回収管８５及び回収シュート８７内をブロア６７から吹き出される圧力風によって運ばれ、回収シュート先端の回収口から吐出されて回収容器等に回収される。
【００４８】
また、各畦クラッチレバー１１０，…には、施肥畦クラッチ１０６，…の入・切に連係して前記植付畦クラッチ５４，…を入・切するためのケーブル１２０，…が繋がれている。畦クラッチレバー１１０，…は後輪のない粉粒体繰出部間に設けられているので、ケーブル１２０，…を肥料移送ホース６２，…及び後輪１１，１１と干渉することなく配索することが可能になっている。
【００４９】
尚、図１３及び図１４に示すような７条植え苗移植機の施肥装置に前述の施肥伝動機構２７を設けてもよい。このときも、施肥伝動機構２７は、左から数えて第４条と第５条の肥料繰出部６１の間に配置される。７条植え苗移植機の場合、中央条は１条だけで植付畦クラッチ及び施肥畦クラッチを入・切し、他は２条単位で植付畦クラッチ及び施肥畦クラッチを入・切する。第１条と第２条の施肥作動を入・切する施肥畦クラッチ１０６（１・２）及び第３条と第４条の施肥作動を入・切する施肥畦クラッチ１０６（３・４）は、第２条の肥料繰出部６１と第３条の肥料繰出部６１との間隔部にそれぞれ設けられている。第５条の施肥作動を入・切する施肥畦クラッチ１０６（５）及び第６条と第７条の施肥作動を入・切する施肥畦クラッチ１０６（６・７）は、第５条の肥料繰出部６１と第６条の肥料繰出部６１との間隔部にそれぞれ設けられている。これらの施肥畦クラッチを操作する畦クラッチレバー１１０（１・２），１１０（３・４），１１０（５），１１０（６・７）は、先端を前方に突出させて上下に回動操作するように設けられている。
【００５０】
上記構成とすることにより、畦クラッチレバー１１０，…と植付畦クラッチ５４，…とを結ぶケーブル１２０，…を肥料移送ホース６２，…と干渉することなく配索することが可能になっている。また、４本の畦クラッチレバー１１０，…が座席３１の左右両側の左右対称の位置に配置されているので、座席３１からの操作を行いやすい。
【００５１】
以上により、この乗用型の田植機１は、原動機となるエンジン２０を備える走行車体２の後側に苗植付部４を設けると共に、走行車体２の後部上側で苗植付部４の前側に粉粒体貯留タンクとなる肥料貯留タンク６０及び該タンク６０内の粉粒体を繰り出す粉粒体繰出部となる肥料繰出部６１を複数設け、エンジン２０からの動力を走行車体２の後部で肥料繰出部６１の下側に設けた伝動分岐部となる植付クラッチケ−ス２５内で苗植付部４と肥料繰出部６１とへ分岐して伝動すると共に、植付クラッチケ−ス２５から上下方向に延びる駆動側揺動ロッド１３２を上下方向に往復作動させて肥料繰出部６１へ伝動し、前記駆動側揺動ロッド１３２から肥料繰出部６１への伝動経路の間に設けた駆動ギヤ１４７及び従動ギヤ１４８で構成される増速伝動部で肥料繰出部６１へ伝動速度が増速される。
【００５２】
従って、この乗用型の田植機１は、走行車体２に設けたエンジン２０からの動力により、機体を走行させながら苗植付部４を作動させて苗を植え付けると共に、肥料繰出部６１を作動させて肥料貯留タンク６０内の粒状肥料を繰り出し圃場の苗植付位置の側方に施肥していく。肥料繰出部６１へは、該肥料繰出部６１の下側に設けた植付クラッチケ−ス２５から上下方向に延びる駆動側揺動ロッド１３２の上下方向の往復作動により上側へ伝動される。また、駆動側揺動ロッド１３２から増速伝動部を介して肥料繰出部６１へ伝動される。
【００５３】
よって、増速伝動部を介して肥料繰出部６１へ伝動する分、駆動側揺動ロッド１３２の上下方向の往復作動の作動ストロ−クが比較的小さくても所望の伝動速度で肥料繰出部６１へ伝動することができるので、駆動側揺動ロッド１３２の上下方向の往復作動による機体に上下方向の振動を抑えることができ、走行車体２に座席３１に座るオペレ−タへの振動の伝播を抑えてオペレ−タの居住性を良好に維持すると共に、繰出駆動軸１０５を所望の回転速度にして肥料繰出部６１による肥料の繰出量を所望に維持しつつ肥料の繰出量を安定させることができる。
【００５４】
また、この乗用型の田植機１は、同じ回転方向で伝動する一対の一方向クラッチ１３６Ｌ，１３６Ｒのうち右側の一方向クラッチ１３６Ｒへ逆転伝達機構を介して伝動することにより、駆動側揺動ロッド１３２からの往復作動で前記一対の一方向クラッチ１３６Ｌ，１３６Ｒへ互いに逆方向の動力が伝達されて前記往復作動における往作動及び復作動を共に何れかの一方向クラッチ１３６Ｌ，１３６Ｒで伝動する構成とし、前記一対の一方向クラッチ１３６Ｌ，１３６Ｒより伝動下手側で各肥料繰出部６１への伝動分岐部となる繰出伝動ギヤ１０８ａより伝動上手側に増速伝動部を設けている。
【００５５】
従って、右側の一方向クラッチ１３６Ｒへ駆動側揺動ロッド１３２からの往復作動を逆転伝達機構を介して伝動することにより、前記往復作動における往作動及び復作動を共に一対の一方向クラッチ１３６Ｌ，１３６Ｒの何れかで伝動し、駆動側揺動ロッド１３２からの往復作動を一対の一方向クラッチ１３６Ｌ，１３６Ｒにより一方向クラッチ軸１３７へ連続的に回転伝動する。そして、一対の一方向クラッチ１３６Ｌ，１３６Ｒによる一方向クラッチ軸１３７の連続的な回転伝動が増速伝動部へ伝動され、増速伝動部から繰出駆動軸１０５を介して該軸１０５と一体回転する複数の繰出伝動ギヤ１０８ａにより伝動を分岐して複数の肥料繰出部６１へ伝動される。
【００５６】
よって、一対の一方向クラッチ１３６Ｌ，１３６Ｒにより駆動側揺動ロッド１３２からの往復作動を連続的に伝動して肥料繰出部６１による肥料の繰出を連続的に行うことができると共に、一対の一方向クラッチ１３６Ｌ，１３６Ｒのうちの何れによる伝動も増速伝動部へ伝動され、また複数の肥料繰出部６１の何れへの伝動も前記増速伝動部を介して伝動されるから、複数の肥料繰出部６１の各々への伝動速度が均一化すると共に安定し、各肥料繰出部６１の肥料の繰出量を均一に安定させることができる。
【００５７】
また、この乗用型の田植機１は、走行車体２の座席３１より後側に複数の肥料繰出部６１を左右に並べて設けると共に、肥料繰出部６１の上方に肥料貯留タンク６０を設け、肥料繰出部６１の後側に設けたカウンタア−ム１３３から前側に延びる従動側揺動ロッド１３４を介して肥料繰出部６１へ伝動し、カウンタア−ム１３３の回動軸１６２を移動させて肥料繰出部６１の肥料の繰出量を変更調節する繰出量調節機構１５６の繰出量調節軸１５８をカウンタア−ム１３３から前上側に延設し、繰出量調節機構１５６の操作具となる繰出量調節ハンドル１５９及び繰出量表示具１７４を肥料繰出部６１より前側に配置している。
【００５８】
従って、カウンタア−ム１３３の作動により従動側揺動ロッド１３４を介して複数の肥料繰出部６１へ伝動し、該肥料繰出部６１を作動させて肥料貯留タンク６０内の肥料を繰り出し圃場に施肥する。そして、作業者が、走行車体２の座席３１側すなわち前側から繰出量表示具１７４により繰出量調節位置を確認しながら繰出量調節機構１５６の繰出量調節ハンドル１５９を操作することにより、カウンタア−ム１３３の回動軸１６２を移動させて肥料繰出部６１の肥料の繰出量を変更調節できる。尚、繰出量調節機構１５６を左右に配列される肥料繰出部６１の間に設けた施肥伝動機構２７の左右一方（左側）に配置し、繰出量調節機構１５６の施肥伝動機構２７側となる側部（右側部）に繰出量表示具１７４を設けているので、作業者は隣接する近い側の（左側の）肥料繰出部６１が邪魔にならずにその反対側（右側）から繰出量表示具１７４を視認することになるので、繰出量表示具１７４の視認を容易に行える。しかも、繰出量調節軸１５８をカウンタア−ム１３３から前上側に延設し、繰出量調節ハンドル１５９及び繰出量表示具１７４を肥料繰出部６１より前側に配置しているので、繰出量調節ハンドル１５９及び繰出量表示具１７４がカウンタア−ム１３３ひいては肥料繰出部６１に対して比較的高い位置に配置されるため、肥料繰出部６１のメンテナンスを行うときに肥料繰出部６１に残留する肥料が繰出量調節ハンドル１５９及び繰出量表示具１７４等にかかりにくくなる。
【００５９】
よって、繰出量表示具１７４により繰出量調節位置を確認しながら繰出量調節ハンドル１５９を操作することができるので、肥料繰出部６１の肥料の繰出量を精度良く微調節できる。また、繰出量調節ハンドル１５９及び繰出量表示具１７４を肥料繰出部６１より前側に配置しているので、走行車体２の座席３１側すなわち前側から繰出量調節をするとき、肥料繰出部６１が邪魔になりにくく、繰出量調節を容易に行える。しかも、繰出量調節ハンドル１５９及び繰出量表示具１７４は比較的高い位置に配置されて肥料がかかりにくくなるので、繰出量調節機構１５６の作動の適正化を図ることができる。尚、繰出量調節軸１５８において繰出量表示用ねじ部分１７３と繰出量調節ねじ部分１５７とを肥料繰出部６１に対して前後に振り分けて設け、繰出量表示用ねじ部分１７３及び繰出量調節ねじ部分１５７が肥料繰出部６１の側方近傍に配置されないようにしたので、繰出量表示用ねじ部分１７３及び繰出量調節ねじ部分１５７に肥料がかかりにくくなり、繰出量調節機構１５６の作動の適正化を図ることができる。
【００６０】
また、繰出駆動軸１０５及び中継軸１４３より前側に一方向クラッチ軸１３７を配置しており、繰出駆動軸１０５ひいては逆転伝達機構の構成部材等が邪魔にならずに一方向クラッチ１３６Ｌ，１３６Ｒのメンテナンスを走行車体２の座席３１側すなわち前側から容易に行える。
【００６１】
図１５及び図１６に示す施肥伝動機構は、左右の一方向クラッチ１３６Ｌ，１３６Ｒの一方向クラッチ軸を繰出駆動軸１０５としたものであり、カウンタ支持部材１６３をプレートにより構成している。尚、前述の第一ア−ム１４０及び第四アーム１４６の代わりに、左右の一方向クラッチ１３６Ｌ，１３６Ｒの外環部１３８Ｌ，１３８Ｒにそれぞれ第一軸２０１、第二軸２０２を固着している。繰出駆動軸１０５は、一方向クラッチ１３６Ｌ，１３６Ｒを外装する一方向クラッチ軸部１０５ａからその左右両側に設けた六角軸部１０５ｂを介して更にその左右外側の外側軸部１０５ｃへ伝動する構成となっている。尚、一方向クラッチ軸部１０５ａ及び外側軸部１０５ｃには六角軸部１０５ｂを挿入できる六角穴２０３を備えており、一方向クラッチ軸部１０５ａ及び外側軸部１０５ｃに対して六角軸部１０５ｂを左右方向にスライドさせて移動できるようになっている。六角軸部１０５ｂの適宜の位置にはＥ型止め輪２０４（スプリング止め輪）を装着するようになっており、このＥ型止め輪２０４が機体側の部材２０５に当接して六角軸部１０５ｂの左右方向の移動を規制している。
【００６２】
そして、一方向クラッチ１３６Ｌ，１３６Ｒの調整や修理等のメンテナンスを行うとき、Ｅ型止め輪２０４を外して左右の六角軸部１０５ｂをそれぞれ左右外側へ移動させて一方向クラッチ軸部１０５ａとの連結を外すことにより、一方向クラッチ軸部１０５ａごと一方向クラッチ１３６Ｌ，１３６Ｒを取り外すことができ、繰出駆動軸１０５上に一方向クラッチ１３６Ｌ，１３６Ｒを設けた構成でありながら、一方向クラッチ１３６Ｌ，１３６Ｒの取り外しが容易に行えてメンテナンスの容易化を図ることができる。
【００６３】
図１７及び図１８は、更に異なる逆転伝達機構を示すものであり、左側の一方向クラッチ１３６Ｌの外環部１３８Ｌと一体回転する第一ギヤ２０６、第二ギヤ２０７を介して第三ギヤ２０８へ伝動し、この第三ギヤ２０８が右側の一方向クラッチ１３６Ｒの外環部１３８Ｒと一体の第四ギヤ２０９と噛み合って前記外環部１３８Ｒへ伝動する。この逆転伝達機構は、ギヤ２０６，２０７，２０８，２０９により構成したので、前述のア−ムやリンクを使用したものと比較して、伝動が確実で精度良く行える。第三ギヤ２０８は、繰出量切替レバ−２１１によりその回動軸方向へ左右移動可能に設けられ、第二ギヤ２０７との噛合を外すことができる。従って、繰出量切替レバ−２１１により、逆転伝達機構を非伝動状態にすることができ、左側の一方向クラッチ１３６Ｌのみにより繰出伝動して２分の１の繰出量にワンタッチで容易に変更することができる。従来は、逆転伝達機構のリンクを外して逆転伝達機構を非伝動状態にしていたので、リンクを外す操作が面倒であった。尚、第三ギヤ２０８の右側には該ギヤに固着される駆動クラッチ爪２１０ａと機体側に固定される従動クラッチ爪２１０ｂとにより構成される固定用クラッチ２１０を設けており、逆転伝達機構を非伝動状態にしたとき、第四ギヤ２０９と常時噛み合う第三ギヤ２０８を回転しない状態にして右側の一方向クラッチ１３６Ｒの外環部１３８Ｒが不用意に回動しないようにしており、繰出伝動の精度向上を図っている。
【００６４】
尚、この発明の実施の形態は乗用型の田植機１について記述したが、本発明は乗用型の田植機に限定されるものではない。
【図面の簡単な説明】
【図１】乗用施肥田植機の側面図
【図２】乗用施肥田植機の平面図
【図３】施肥装置の一部の側面図
【図４】施肥装置の一部の平面図
【図５】施肥装置の一部の背面図
【図６】肥料繰出部を示す側面断面図
【図７】排出シャッタ及びエア切替シャッタの開閉機構を示す図
【図８】施肥伝動機構を示す側面図
【図９】施肥伝動機構を示す平面図
【図１０】逆転伝達機構及び繰出量調節機構の一部を示す展開平面断面図
【図１１】カウンタ支持部材を示す展開背面断面図
【図１２】肥料繰出部への伝動構成を示す断面図
【図１３】異なる施肥装置の平面図
【図１４】異なる施肥装置の背面図
【図１５】異なる施肥伝動機構を示す側面図
【図１６】異なる施肥伝動機構を示す背面断面図
【図１７】異なる逆転伝達機構を示す側面図
【図１８】異なる逆転伝達機構を示す展開断面図
【符号の説明】
１…乗用型の田植機、２…走行車体、４…苗植付部、２０…エンジン、２５…植付クラッチケ−ス、６０…肥料貯留タンク、６１…肥料繰出部、１０８ａ…繰出伝動ギヤ、１３２…駆動側揺動ロッド、１３６Ｌ，１３６Ｒ…一方向クラッチ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention belongs to the technical field of a powder and granular material discharger including a fertilizer, a seeding device, a chemical spraying device, and the like, which are configured to reciprocate a swing rod extending in a vertical direction and to transmit the powder to a powder and particle feeding unit.
[0002]
[Prior art]
Conventionally, a seedling planting section is provided on the rear side of a traveling vehicle body equipped with a motor, and a powder and granular material storage tank and a plurality of powders for feeding out powder particles in the tank are provided on the rear upper side of the traveling vehicle body and in front of the seedling planting section. A granule feeding section is provided, and the power from the prime mover is branched and transmitted to the granule feeding section at a transmission branch section provided below the granule feeding section at the rear of the traveling vehicle body, and is transmitted from the transmission branch section up and down. 2. Description of the Related Art There is known a seedling transplanter (powder / particle discharger) having a configuration in which a swing rod extending in a vertical direction is reciprocated in a vertical direction and transmitted to a powder / particle feeder. Then, in the seedling transplanter (powder / particle discharger), the reciprocating operation from the oscillating rod is performed by transmitting to one of a pair of one-way clutches transmitting in the same rotational direction via a reverse rotation transmission mechanism. There is also known a configuration in which power in opposite directions is transmitted to the pair of one-way clutches so that both the forward operation and the return operation in the reciprocating operation are transmitted by any one-way clutch (for example, see Patent Document 1). .).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-27038
[0004]
[Problems to be solved by the invention]
In the above-mentioned prior-art powder discharger, the swing rod extending in the up-down direction is reciprocated in the up-down direction to transmit the powder to the powder feeding section, so that the swing rod reciprocates in the up-down direction. Vertical vibrations are likely to occur in the body due to the operation, and the livability of the operator mounted on the traveling vehicle body is deteriorated, and the powder is dispensed because the power is not transmitted smoothly to the powder delivery section. The amount may be unstable.
[0005]
[Means for Solving the Problems]
The present invention has taken the following technical measures in order to solve the above problems.
That is, the invention according to claim 1 provides a seedling planting section 4 on the rear side of the traveling vehicle body 2 provided with the prime mover 20 and a powder storage tank on the rear upper side of the traveling vehicle body 2 and in front of the seedling planting section 4. A transmission branch portion provided with a plurality of powder and granular material feeding portions 61 for feeding out the powder and granular material in the tank 60 and provided with power from the prime mover 20 at the rear of the traveling vehicle body 2 below the powder and granular material feeding portion 61; At 25, the power is branched and transmitted to the seedling planting section 4 and the granular material feeding section 61, and the rocking rod 132 extending vertically from the transmission branching section 25 is reciprocated in the vertical direction. A seedling transplanter having a configuration in which a speed increasing transmission portion is provided between the transmission path from the swing rod 132 to the powder material feeding portion 61 and a speed increasing transmission portion. did.
[0006]
Therefore, the granular material discharger according to claim 1 operates the seedling planting section to plant the seedlings by the power from the prime mover provided on the traveling vehicle body, and operates the granular material feeding section to operate the granular material discharge section. The powder in the body storage tank is fed out and applied to the field. The swinging rod extending vertically from the transmission branch provided below the powder and granular material feeding section is transmitted to the powder and granular material feeding section by a reciprocating operation in the vertical direction. Further, the power is transmitted from the swinging rod to the powder material feeding section via the speed increasing transmission section.
[0007]
Further, the invention according to claim 2 transmits to one of the pair of one-way clutches 136L and 136R that transmit in the same rotational direction via a reverse rotation transmission mechanism, thereby reciprocating from the rocking rod 132. Power is transmitted in opposite directions to the pair of one-way clutches 136L, 136R so that both the forward operation and the return operation in the reciprocating operation are transmitted by one of the one-way clutches 136L, 136R. 2. The powdery and granular material discharger according to claim 1, wherein a speed-increasing transmission portion is provided on the transmission lower side from the clutches 136 </ b> L and 136 </ b> R and on the transmission upper side from the transmission branch portion to the plurality of powdery material feeding portions 61. 3. And
[0008]
Therefore, in addition to the operation of the granular material discharger according to the first aspect, the granular material discharger according to the second aspect includes a reverse transmission mechanism that reciprocates the reciprocating operation from the swing rod to one one-way clutch. In this way, both the forward operation and the return operation in the reciprocating operation are transmitted by one of a pair of one-way clutches, and the reciprocating operation from the swing rod is continuously rotationally transmitted by the pair of one-way clutches. . Then, the continuous rotational transmission by the pair of one-way clutches is transmitted to the speed-increasing transmission section, and the transmission is branched from the speed-increasing transmission section and transmitted to the plurality of powdery material feeding sections.
[0009]
【The invention's effect】
Therefore, the stroke of the reciprocating operation of the oscillating rod in the up-down direction is relatively small by the amount of power transmitted to the powder-particle feeding section via the speed increasing transmission section. However, since the power can be transmitted to the powder material feeding section at a desired transmission speed, the vertical vibration of the body caused by the reciprocating operation of the swing rod in the vertical direction can be suppressed, and the operator mounted on the traveling vehicle body Of the powder and granules can be stabilized while maintaining the desired amount of powder and granules to be fed out by the powder and grain feed section.
[0010]
According to the second aspect of the present invention, in addition to the effect of the first aspect, the reciprocating operation from the swing rod is continuously transmitted by the pair of one-way clutches. The powder material can be continuously fed by the powder material feeding portion, and the transmission by any one of the pair of one-way clutches is transmitted to the speed increasing transmission portion. Since the transmission to any of the parts is transmitted via the speed increasing transmission part, the transmission speed to each of the plurality of powder and material delivery parts becomes uniform and stable, and the powder and granules in each of the powder and material delivery parts are stabilized. The amount of body extended can be uniformly stabilized.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a riding type rice transplanter 1 equipped with a fertilizer application device. The riding type rice transplanter 1 is provided with a seedling planting section via a lifting link device 3 behind a traveling vehicle body 2. 4 is mounted so as to be able to move up and down, and a main body of the fertilizer application device 5 is provided on the upper rear part of the traveling vehicle body 2.
[0012]
The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10, 10 and rear wheels 11, 11, which are driving wheels, and a transmission case 12 is disposed at a front portion of an airframe. Front wheel final cases 13, 13 are provided on the left and right sides of the vehicle, and front wheels 10, 10 are attached to front wheel axles that project outward from the front wheel support portions of the front wheel final case that can be turned. A front end portion of the main frame 15 is fixed to a rear portion of the transmission case 12, and the rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally at the rear left and right central portions of the main frame 15 as a fulcrum. A rear wheel 11, 11 is mounted on a rear wheel axle that is supported in a freely rolling manner and that protrudes outward from the rear wheel gear cases 18, 18.
[0013]
The engine 20 as a prime mover is mounted on the main frame 15, and the rotational power of the engine is transmitted to the transmission case 12 via the first belt transmission 21 and the second belt transmission 23. After the rotational power transmitted to the transmission case 12 is shifted by the transmission in the case, the rotational power is separated and taken out into traveling power and external take-out power. A part of the traveling power is transmitted to the front wheel final cases 13, 13 to drive the front wheels 10, 10, and the rest is transmitted to the rear wheel gear cases 18, 18 to drive the rear wheels 11, 11. The external take-out power is transmitted to a planting clutch case 25 provided at the rear of the traveling vehicle body 2, and then transmitted to a seedling planting section 4 by a planting transmission shaft 26. Transmitted to
[0014]
An upper portion of the engine 20 is covered with an engine cover 30, and a seat 31 is provided thereon. In front of the seat 31, there is a bonnet 32 containing various operation mechanisms, and a handle 34 for steering the front wheels 10, 10 is provided above the hood 32. The left and right lower ends of the engine cover 30 and the bonnet 32 are horizontal floor steps 35. The rear part of the floor step 35 is a rear step 36 also serving as a rear wheel fender. In addition, on both front left and right sides of the traveling vehicle body 2, spare seedling mounting tables 38, 38 on which replenishing seedlings are mounted can be rotated between a position protruding sideward from the body and a position housed inside. Is provided.
[0015]
The lifting link device 3 has a parallel link configuration and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are rotatably mounted on a rear-view portal type link base frame 42 erected on the rear end of the main frame 15 on the base side, and a vertical link 43 is connected to the distal end side. ing. A connection shaft 44 rotatably supported by the seedling planting portion 4 is inserted and connected to the lower end of the vertical link 43, and the seedling planting portion 4 is connected to the seedling planting portion 4 in a rolling manner around the connection shaft 44. An elevating hydraulic cylinder 46 is provided between a supporting member fixed to the main frame 15 and a tip end of a swing arm 45 integrally formed with the upper link 40, and the upper link 40 is expanded and contracted by hydraulic pressure. Rotating up and down, the seedling planting section 4 moves up and down with a substantially constant posture.
[0016]
The seedling planting section 4 has a six-row planting structure. A transmission case 50 also serving as a frame, a mat seedling is placed and reciprocated left and right to supply seedlings to the seedling outlets 51a,. When all of the seedlings are supplied to the seedling outlets 51a,..., The seedlings are transported downward by the seedling feed belts 51b, and the seedlings supplied to the seedling outlets 51a,. , A pair of left and right drawing markers 53, 53, etc., for drawing the course of the machine in the next step on the topsoil surface. In the transmission case 50, a total of three planting ridge clutches 54 (1.2), 54 (3.4), 54 (5) for turning on and off the operation of the seedling planting devices 52,.・ 6) is provided. These planting ridge clutches are turned on and off by ridge clutch levers 110 (1.2), 110 (3.4), and 110 (5.6) described later.
[0017]
A center float 55 and side floats 56 are provided below the seedling planting section 4. When the airframe advances while the floats are in contact with the mud surface of the field, the floats slide while leveling the mud surface, and seedlings are planted at the leveling ground by the seedling planting devices 52,. Each of the floats 55, 56, 56 is rotatably mounted so that the front end moves up and down in accordance with the unevenness of the topsoil of the field, and the vertical movement of the front part of the center float 55 during planting operation is a vertical movement detection mechanism. The planting depth of the seedlings is always kept constant by switching the hydraulic valve that controls the raising and lowering hydraulic cylinder 46 according to the detection result and raising and lowering the planting portion 4.
[0018]
The fertilizer applicator 5 feeds out a certain amount of fertilizer (powder / granule) stored in a fertilizer storage tank (powder / granule storage tank) 60 by a fertilizer feeding unit (powder / granule feeding unit) 61,. With fertilizer transfer hoses (powder transfer hoses) 62,... Are guided to fertilizer guides 63,... Attached to the left and right sides of the floats 55, 56, 56, and groove forming bodies 64,. As a result, the water is discharged into a fertilizing groove formed near the side of the seedling attachment strip. The compressed air generated by the blower 67 driven by the motor 66 is blown into the fertilizer transfer hoses 62,... Through the air chamber 68 which is long in the left-right direction, and the fertilizer in the fertilizer transfer hoses 62,. Forcibly transferred to the fertilizer discharge port.
[0019]
Hereinafter, the configuration of each part of the main part of the fertilizer applicator shown in FIGS. 3 to 12 will be described.
The fertilizer storage tank 60 in which the strips are integrally formed is provided with a lid 60a which can be opened and closed with the rear side as a fulcrum. The lower part of the fertilizer storage tank 60 is funnel-shaped for each strip, and the lower part is connected to the upper ends of the fertilizer feeding parts 61,. The fertilizer storage tank 60 is rotatably attached to a support plate 71 protruding upward from a fertilizer application frame 70 that is long in the left-right direction at a lower part of the rear surface thereof. As shown by a two-dot chain line in FIG. 61, and can be rotated rearward. At the normal position where the lower part of the fertilizer storage tank 60 is connected to the upper end of the fertilizer feeding part 61,...
[0020]
At the lower part of the fertilizer storage tank 60, an opening / closing shutter for stopping the supply of fertilizer from the fertilizer storage tank 60 to the fertilizer feeding unit 61 or preventing the fertilizer in the fertilizer storage tank 60 from flowing out when the fertilizer storage tank 60 is rotated. 73 are provided. The opening / closing shutter 73 is slidably supported by a slide support member 74, and is slid to a closed position indicated by a solid line and an open position indicated by a two-dot chain line in FIG. I have. Since the locking member 72 cannot be removed unless the opening / closing shutter 73 is closed, it is possible to prevent the fertilizer storage tank 60 from rotating by mistake while the shutter 73 is opened, thereby preventing the fertilizer from flowing out.
[0021]
Below the opening / closing shutter 73, a cylindrical portion 75 is formed which is inserted above the fertilizer feeding section 61 when the fertilizer storage tank 60 is connected to the fertilizer feeding section 61. A gap is formed between the cylindrical part 75 and the upper part of the fertilizer feeding part 61. When closing the opening / closing shutter 73 and rotating the fertilizer storage tank 60 with fertilizer stored in the fertilizer storage tank 60, the fertilizer storage tank 60 was positioned above the upper end of the fertilizer feeding section 61 and below the open / close shutter 73. The flow of the fertilizer into the gap prevents the fertilizer from overflowing from the fertilizer feeding section 61.
[0022]
At the lower end of the fertilizer storage tank 60, an elastic body 76a for buffering when the fertilizer storage tank 60 is connected to the fertilizer feeding section 61 and a packing 76b for maintaining airtightness between them are attached. The packing 76b comes into contact with the case of the fertilizer feeding section 61 at two points, that is, at the upper end portion of the fertilizer feeding section 61 and a portion slightly below the upper section. For this reason, there is a space between the case of the fertilizer feeding section 61 and the packing 76b, and even if the positional relationship between the fertilizer storage tank 60 and the fertilizer feeding section 61 is slightly shifted, the space is absorbed by the space, and the airtightness between the two is reduced. Does not damage.
[0023]
The fertilizer feeding section 61 has a built-in feeding roll 77 for feeding the fertilizer in the fertilizer storage tank 60 downward. The feeding roll 77 is a rotating body in which a plurality of (six in the illustrated example) grooves 77a,... Into which fertilizer enters the outer peripheral portion are formed, and a square shaft portion 78a of a feeding shaft 78 provided in the left-right direction (in the illustrated example, FIG. (Square shafts) so as to rotate together. When the feeding roll 77 rotates in the direction of the arrow in FIG. 6, the fertilizer dropped and supplied from the fertilizer storage tank 60 is accommodated in the groove 77a, transported downward, and fed out from the feeding outlet 61a at the lower end.
[0024]
On the front side of the feeding roll 77, a brush 79 slidingly contacting the outer peripheral surface of the feeding roll 77 is provided detachably, and by restricting the brush 79 from receiving the fertilizer overflowing from the groove 77a and falling downward, The fertilizer is housed in the groove 77a in a cut-off state, so that the fertilizer feeding amount is kept constant.
[0025]
A connection pipe 80 is provided at the feeding outlet 61a of the fertilizer feeding section 61, which is slightly lowered and communicates in a substantially front-rear direction. The end of the fertilizer transfer hose 62 on the hopper side is connected to the rear end of the connection pipe 80. On the other hand, the front end of the connection pipe 80 is inserted and connected to the back of the air chamber 68. The left end of the air chamber 68 is connected to a blower 67 via an air switching pipe 81, and pressure air from the blower is blown into the fertilizer transfer hose 62 from the tubular portion 61 b via the air chamber 68. I have.
[0026]
The fertilizer transfer hose 62 is supported from below by a hose holder 82 fixed to a fertilizer collection pipe 85 that is long in the left-right direction, which will be described later, at a position slightly behind the connection pipe 80.
Further, a fertilizer discharge port 83 is formed at the rear side of the feeding roll 77 at a position where the lower end is lower than the upper end of the feeding roll 77. The fertilizer discharge port 83 is inclined backward and downward, and a discharge shutter 84 that can be freely opened and closed with its upper end serving as a fulcrum is attached to an intermediate portion thereof. The fertilizer discharge port 83 of each fertilizer feeding section is connected to a fertilizer collecting pipe 85 provided in the rear of the fertilizer feeding section 61 in the left-right direction by a fertilizer discharging pipe 83a.
[0027]
The left end of the fertilizer collection pipe 85 is connected to the blower 67 via the air switching pipe 81. The air switching pipe 81 is a forked pipe, one of which is connected to the air chamber 68, and the other is connected to the fertilizer collection pipe 85. The air switching pipe 81 is provided with an air switching shutter 86 so that the air supplied from the blower 67 can be switched between a state of supplying the air to the air chamber and a state of supplying the air to the fertilizer collection pipe. The right end of the fertilizer collection pipe 85 is bent downward, and a flexible collection chute 87 is connected to the tip.
[0028]
FIG. 7 is a diagram showing an opening and closing mechanism of the discharge shutter and the air switching shutter. A fertilizer collection lever 90 is rotatably provided near the collection chute 87. A fan-shaped plate 92 is attached to a left-right shutter opening / closing transmission shaft 91 provided coaxially with a rotation fulcrum shaft 90a of the fertilizer recovery lever 90. An arc-shaped elongated hole formed in the fan-shaped plate 92 is provided. A pin 90b fixed to the fertilizer recovery lever 90 is loosely fitted to the nut 92a. An opening / closing gear 93 is attached to the shutter opening / closing transmission shaft 91 for each fertilizer feeding section, and the gear 93 meshes with a semicircular gear 94 attached to a rotation shaft 84 a of a discharge shutter 84 (see FIG. 6). One end of an air switching wire 95 is connected to the fertilizer collection lever 90. The other end of the air switching wire 95 is connected to an arm 96 attached to a rotation shaft 86a of the air switching shutter 86 via a tension spring 97.
[0029]
When the fertilizer recovery lever 90 is rotated, the air switching wire 95 is pulled to switch the air switching shutter 86, and the pressure air blown from the blower 67 is supplied to the fertilizer recovery pipe 85. As long as the amount of turning operation of the fertilizer collecting lever 90 is small, the pin 90b only moves in the elongated hole 92a, so that the shutter opening / closing transmission shaft 91 does not turn. However, when the fertilizer recovery lever 90 is rotated by a certain amount or more, the pin 90b engages with the sector plate 92, and the shutter opening / closing transmission shaft 91 rotates. As a result, the discharge shutters 84 are opened, and the fertilizer in the fertilizer storage tank 60 is discharged to the fertilizer collection pipe 85. The opening / closing gears 93 are provided with a phase shifted for each row, and the discharge shutters 84 are opened in order from the fertilizer feeding section near the blower. This prevents a large amount of fertilizer from flowing into the fertilizer collection pipe 85 at one time, so that the fertilizer flows smoothly in the fertilizer collection pipe 85 and prevents the fertilizer from being clogged in the pipe.
[0030]
The fertilizer collection lever 90 is rotated along a lever guide 98. Guide holes 98a and 98b are formed in the lever guide 98, and an engaging portion (not shown) of the fertilizer recovery lever 90 is engaged with the guide holes 98a and 98b by using the bending of the fertilizer recovery lever 90. Thus, the fertilizer collection lever 90 can be fixed at a position P1 at which only the air switching shutter 86 is switched, and at a position P2 at which both the air switching shutter 86 and the discharge shutters 84 are switched.
[0031]
Next, the fertilizer transmission mechanism 27 will be described. Note that the fertilizer transmission mechanism 27 is disposed between the fourth and fifth fertilizer feeding sections 61 counted from the left.
The crank arm 131 protruding from the rear surface of the planting clutch case 25 is output and the vertical reciprocating motion of the drive-side swing rod 132 connected to the crank arm 131 and extending in the vertical direction is the upper counter arm. 133 is transmitted. The counter arm 133 has a U-shape in a side view, and the driving-side rocking rod 132 and a driven-side rocking rod 134 described later are connected to each other. The reciprocating movement of the driven-side swing rod 134 in the front-rear direction due to the reciprocating swing of the counter arm 133 is transmitted to the feed input arm 135 on the rear side of the counter arm 133. The reciprocating operation in the front-rear direction is transmitted to the left one-way clutch 136L. The two one-way clutches 136L and 136R are provided on the left and right, and are configured to rotate around the same one-way clutch shaft 137 in the left and right direction. This is a roller clutch provided with a plurality of transmission rollers 139 between the clutch shaft 137 and the transmission shaft 137. The rotation of the outer ring portions 138L and 138R is transmitted to the one-way clutch shaft 137. Therefore, in the left one-way clutch 136L, the outer ring portion 138L is provided integrally with the feeding input arm 135, and the outer ring portion 138L turns in one direction in the reciprocating operation of the feeding input arm 135 in the front-rear direction. The movement is transmitted to the one-way clutch shaft 137. The left and right one-way clutches 136L and 136R transmit the one-way clutch shaft 137 by the rotation of the outer rings 138L and 138R in the same direction.
[0032]
A first arm 140 integrated with the outer ring portion 138L is provided above the outer ring portion 138L of the one-way clutch 136L on the left side, and the first arm 140 and the second arm 141 on the front side are provided. Are connected by a first link 142. The second arm 141 is configured to rotate integrally with the relay shaft 143 in the left-right direction, and extends downward from the relay shaft 143 to connect the first link 142 below the relay shaft 143. I have. On the right side of the second arm 141, a third arm 144 that rotates integrally with the relay shaft 143 extends upward from the relay shaft 143, and the third arm 144 is a second arm. 141 and rotates together. A second link 145 is connected to a position above the relay shaft 143 of the third arm 144, and a fourth arm 146 is connected to the other end of the second link 145. The fourth arm 146 is provided integrally with the outer ring 138R above the outer ring 138R of the right one-way clutch 136R. Therefore, the first arm 140 reciprocates in the front-rear direction by the reciprocating rotation of the outer ring portion 138L of the one-way clutch 136L on the left side, and is transmitted to the second arm 141 via the first link 142. The second arm 141 reciprocates back and forth to the same side in synchronization with the first arm 140. The third arm 144 extends up and down (upper side) with respect to the relay shaft 143 from the second arm 141 with respect to the relay shaft 143. Therefore, the third arm 144 is connected to the second link 145 at the connecting position. In synchronism with the reciprocating rotation of the second arm 141, the second arm 141 reciprocates back and forth at the connecting position of the first link 142 in the front-rear direction. Then, the reciprocating motion of the third arm 144 is transmitted to the fourth arm 146 via the second link 145, and the fourth arm 146 is moved back and forth on the same side in synchronization with the third arm 144. The outer ring 138R of the one-way clutch 136R on the right rotates in the opposite direction in synchronization with the reciprocating rotation of the outer ring 138L of the one-way clutch 136L on the left. Therefore, the first to fourth arms 140 to 146, the first link 142 and the second link 145 constitute a reverse rotation transmission mechanism.
[0033]
Therefore, since the outer ring portions 138L and 138R of the left and right one-way clutches 136L and 136R rotate to opposite sides by the reverse rotation transmission mechanism, the left and right one-way clutches 136L and 136R in the reciprocating operation of the feeding input arm 135. Causes the one-way clutch shaft 137 to rotate in the same one direction (forward rotation direction), so that the one-way clutch shaft 137 can always be driven continuously.
[0034]
A drive gear 147 that rotates integrally with the one-way clutch shaft 137 and the key 147a is provided between the left and right one-way clutches 136L and 136R, and the drive gear 147 is connected to a driven gear 148 that rotates integrally with the feeding drive shaft 105 described later. Mesh with each other. Therefore, the continuous rotation of the one-way clutch shaft 137 is transmitted to the feeding drive shaft 105. The number of teeth of the driving gear 147 is larger than the number of teeth of the driven gear 148, and is about twice the number of teeth of the driven gear 148. Therefore, the drive gear 147 and the driven gear 148 constitute a speed-up transmission unit that transmits power by increasing the rotation speed. The outer periphery of the outer ring portions 138L and 138R of the left and right one-way clutches 136L and 136R should prevent foreign matter such as fertilizer and dust from entering the transmission roller 139 of the one-way clutches 136L and 136R. A seal member 149 is provided to close the gap between the drive gear 147 and the base inner diameter. It should be noted that the transmission rollers 139 of the left and right one-way clutches 136L and 136R are also in contact with the inner surfaces of the outer ring portions 138L and 138R and the outer surface of the one-way clutch shaft 137 on the side opposite to the drive gear 147. An outer sealing material 149a is provided.
[0035]
Accordingly, since the drive gear 147 is provided between the left and right one-way clutches 136L and 136R, the drive gear 147 and the one-way clutches 136L and 136R that transmit even if the left or right one-way clutch 136L or 136R is in the transmission state. Since the drive gear 147 is disposed on one of the left and right sides of the pair of left and right one-way clutches 136L and 136R, the power transmitted by the one-way clutches 136L and 136R is compared with that of the drive gear 147. The fertilizer can be properly transmitted at an appropriate speed, and the amount of fertilizer fed from the fertilizer feeding unit 61 can be appropriately stabilized. Further, a seal member 149 for closing a gap between the outer ring portions 138L, 138R of the one-way clutches 136L, 136R and the inner diameter portion of the drive gear 147 overlaps with the outer ring portions 138L, 138R in the one-way clutch shaft 137 direction. Therefore, the positions of the transmission rollers 139 of the one-way clutches 136L and 136R and the drive gear 147 in the left-right direction (direction of the one-way clutch shaft 137) can be made closer to each other, and transmitted by the one-way clutches 136L and 136R. Power can be more accurately transmitted to the drive gear 147 at an appropriate speed. When a conventional general one-way clutch is used, this one-way clutch has a sealing material on the outside of the transmission roller (outside in the one-way clutch axial direction) like an outer sealing material 149a shown in FIG. Therefore, the gap between the drive gear and the key and the transmission roller must be provided by the thickness of the seal material in the one-way clutch axial direction, and the rotational operation speed of the drive gear 147 is reduced by the one-way clutch shaft. May be susceptible to the influence of supporters and become inappropriate or unstable.
[0036]
On the left and right sides of the reverse rotation transmission mechanism, reverse rotation support members 150L and 150R for supporting the reverse rotation transmission mechanism are provided, respectively. The reverse rotation support members 150L and 150R are made of a casting, and are fixed to a base frame 151 of the fertilizer application device 5 with tightening bolts 152. The one-way clutch shaft 137, the feeding drive shaft 105, and the reverse rotation transmission mechanism are provided. Ball bearings 153, 154, and 155 for bearing the relay shaft 143 of FIG. The feed drive shaft 105 is provided to extend leftward and rightward through the reverse rotation support members 150L and 150R. Therefore, the one-way clutch shaft 137, the feed drive shaft 105, and the relay shaft 143 are supported on the left and right by the left and right reverse rotation support members 150L and 150R, and the one-way clutch 137, the reverse rotation transmission mechanism and the drive gear 147, and the driven gear 148 are provided. And so on, so that the support rigidity is improved, and the feed-out transmission is appropriately and accurately performed. In particular, as shown in FIGS. 9 and 10, the second arm 141 is arranged close to the left-side reverse support member 150L, and the third arm 144 is arranged close to the right-side reverse support member 150R. Therefore, the left and right ball bearings 155 firmly receive the operating load received from the arms 141 and 144 on the relay shaft 143, and the transmission accuracy of the arms 141 and 144 can be improved. it can.
[0037]
A feeding amount adjusting mechanism 156 is provided on the left side of the left-side reverse rotation support member 150L. The feed amount adjusting mechanism 156 includes a feed amount adjusting shaft 158 having a feed amount adjusting screw portion 157 at a front portion, and a feed amount adjusting handle 159 attached to a rear portion of the shaft 158. A shaft support member 160 is provided at an intermediate portion of the feed amount adjusting shaft 158 so that the shaft 158 can rotate. The left and right shaft support fulcrum shaft 160a fixed to the shaft support member 160 is moved to the left. Of the reverse rotation support member 150L. Therefore, the feeding amount adjusting mechanism 156 is provided rotatably around the shaft supporting fulcrum shaft 160a. The shaft support fulcrum shaft 160a is supported on the left-hand side reverse support member 150L on the right side of the feeding amount adjustment shaft 158, and is supported on the specially provided adjustment shaft support frame 161 on the left side. Accordingly, the feeding amount adjusting mechanism 156 is configured to be supported at both sides of the feeding amount adjusting shaft 158 at the shaft support fulcrum shaft 160a.
[0038]
On the upper part of the counter support member 163 that supports the rotating shaft 162 of the counter arm 133, a main part having a female screw portion 164a is provided with a hexagonal position adjuster 164 in a side view so as to be rotatable around a left-right axis. ing. At the rear end of the counter support member 163, a counter fulcrum shaft 165 whose axis is located on the same straight line in the left-right direction is provided on each of the left and right sides, and the counter support member 163 is a base frame around the counter fulcrum shaft 165. 151 so as to be rotatable. The base frame 151 is provided with a plurality (four) of holes 166 for mounting the counter fulcrum shafts 165 in the front and rear directions. The front and rear positions of the fulcrum shaft 165 are changed so that the counter support member 163 and the base frame 151 are shared. The counter fulcrum shaft 165 is supported by the body by a reinforcing member 167 separate from the base frame 151. Even if the position of the counter fulcrum shaft 165 changes, the reinforcing member 167 is attached to the counter fulcrum shaft 165 to increase rigidity. The position of the counter fulcrum shaft 165 is hardly changed. A feeding amount adjusting screw portion 157 at the front of the feeding amount adjusting shaft 158 is screwed to the female screw portion 164a of the position adjusting body 164, and the position adjusting body 164 moves back and forth by the rotation of the feeding amount adjusting shaft 158. As a result, the counter support member 163 rotates around the counter fulcrum shaft 165, and the rotating shaft 162 of the counter arm 133 is moved forward and upward or backward and downward. Therefore, by moving the rotation shaft 162 of the counter arm 133, the posture of the counter arm 133 changes. For example, when the rotation shaft 162 is moved forward and upward, the driving side swing rod 132 and the driven side Since the posture is changed so that the swing rod 134 intersects the counter arm 133 at a right angle, the counter arm 133 operated by the drive-side swing rod 132 and the driven arm 134 operate. The swing stroke (swing angle) of the feed input arm 135 is increased, and the rotation speed of the one-way clutch shaft 137 and thus the feed drive shaft 105 is increased, so that the amount of feed by the fertilizer feed unit 61 is increased. . On the other hand, when the rotating shaft 162 is moved rearward and downward, the posture is changed so that the driving side swinging rod 132 and the driven side swinging rod 134 both intersect with the counter arm 133 at a distance from a right angle. Therefore, the swing stroke (swing angle) of the counter arm 133 operated by the drive-side swing rod 132 and the feeding input arm 135 operated by the driven-side swing rod 134 is reduced, and the one-way clutch is provided. The rotation speed of the shaft 137 and, consequently, the feed drive shaft 105 is reduced, and the amount of feed by the fertilizer feed unit 61 is increased. Therefore, by manipulating the feeding amount adjusting handle 159 to rotate the feeding amount adjusting shaft 158, the feeding amount of the fertilizer of the fertilizer application device 5 can be continuously changed and adjusted.
[0039]
The counter supporting member 163 is formed in a U-shape in plan view by left and right plate portions 163a and a front plate portion 163b connecting the left and right plate portions 163a. 163a is provided with a position adjusting body 164, ball bearings 168, 169, and 170 for bearing a rotating shaft 162 of the counter arm 133 and a counter fulcrum shaft 165, respectively. Accordingly, the position adjusting body 164 and the rotating shaft 162 of the counter arm 133 are supported by both left and right ball bearings 168 and 169, and the left and right counter fulcrum shafts 165 are left and right by the respective left and right ball bearings 170. Supported separately. Therefore, since the screwing portion between the feeding amount adjusting screw portion 157 of the feeding amount adjusting shaft 158 and the female screw portion 164a of the position adjusting body 164 is screwed, rattling is likely to occur, and the rotational position of the counter support member 163 is increased. However, since the ball bearings 168 are provided on the left and right sides of the threaded portion to support the position adjusting member 164 at both ends, it is necessary to stabilize the rotational position of the counter support member 163. This makes it possible to optimize the feed amount adjustment and stabilize the feed amount of the fertilizer of the fertilizer application device 5. As shown in FIG. 11, since the screw portion is disposed close to one of the left and right ball bearings 168 (the left ball bearing 168) of the position adjusting body 164, the screw in the position adjusting body 164 is not provided. The position of the joint portion with respect to the counter support member 163 is unlikely to change, and the rotational position of the counter support member 163 can be further stabilized. Further, since the counter arm 133 is configured to reciprocate and swing, if the position of the rotating shaft 162 of the arm 133 changes even a little, the amount of rotation (the amount of swing) changes and the fertilizer feeding section 61 There is a tendency for the amount of fertilizer to be dispensed easily. However, since the rotating shaft 162 of the counter arm 133 is supported at both ends by the left and right ball bearings 169, the position of the rotating shaft 162 with respect to the counter supporting member 163 is hard to change, and the rotation of the counter arm 133 is prevented. The amount of movement (the amount of swing) can be stabilized, and the amount of fertilizer delivered from the fertilizer application device 5 can be stabilized.
[0040]
The left and right end portions 164b of the position adjusting body 164 are formed in a round shaft shape, and the left and right end portions 164b are fitted to a ball bearing 168 so as to be rotatable around the left and right axis. A hole 171 is provided at an appropriate position on the extension of the feed amount adjusting shaft 158 of the front plate portion 163b, and the feed amount adjusting screw portion 157 of the feed amount adjusting shaft 158 is operated by operating the feed amount adjusting handle 159 so that the position adjusting body is formed. Even if it is in a state of protruding largely to the front side of 164, the feed amount adjusting shaft 158 penetrates the hole 171 so as not to interfere with the counter support member 163. A notch 172 is provided below the front plate 163b so that the counter arm 133 passes through the notch 172.
[0041]
A thread amount display screw portion 173 is provided at a portion of the extension amount adjusting shaft 158 on the front side of the shaft support member 160, and a thread amount indicator 174 having a female screw portion 174a screwed to the screw portion 173 is provided. Note that the dispensing amount indicator 174 engages with a long hole 176 provided on the right side of the cover 175 that covers the dispensing amount indicating screw portion 173, and a part of the long hole 176 extends rightward of the cover 175. And is supported so as not to rotate with respect to the cover-175, and is guided by the long hole portion 176 so as to be movable in the direction of the feed amount adjusting shaft 158. It is configured to move in the direction of the shaft 158 as the 158 rotates. A scale 177 is provided on the edge of the long hole portion 176 of the cover-175 in the direction of the long hole, and a mark 178 is provided on the feeding amount indicator 174, and the scale indicated by the mark 178 is provided. While reading 177, the worker recognizes and adjusts the amount of fertilizer to be fed.
[0042]
The feed amount adjusting shaft 158 is provided so as to be inclined upward in a front view when viewed from the side, and a feed amount adjusting handle 159 provided at the front end of the feed amount adjusting shaft 158 is disposed on the front side of the fertilizer feeding portion 61. Therefore, the worker can easily operate the feeding amount adjustment handle 159 from the traveling vehicle body 2 side while the fertilizer feeding section 61 is sitting on the seat 31 without obstruction.
[0043]
The fertilizing power transmitted to the feeding drive shaft 105 is transmitted to the cylindrical shafts 107 rotatably fitted to the feeding drive shaft 105 via fertilization furrow clutches 106 provided for every two rows. You. Then, the power is transmitted from each cylinder shaft 107 to each of the feed shafts 79 via a pair of feed transmission gears 108a and 108b. The drive transmission gear 108a is slidably fitted to the cylindrical shaft 107, and the engagement of the pair of transmission gears 108a and 108b can be released by shifting the gear 108a. That is, it is configured as a single-row clutch 108 that turns on and off the fertilizing operation for each row.
[0044]
Fertilizing ridge clutch 106 (1.2) for turning on / off the first and second fertilizing operations counted from the left, and fertilizing ridge clutch 106 (3) for turning on / off the third and fourth fertilizing operations. (4) is provided at an interval between the second fertilizer feeding section 61 and the third fertilizer feeding section 61, respectively. The fertilizing ridge clutch 106 (5.6) for turning on / off the fertilizing operation of Articles 5 and 6 is provided on the right side of the fertilizer feeding section 61 of Article 6, that is, on the right end of the fertilizer application device. The ridge clutch levers 110 (1.2), 110 (3.4), and 110 (5.6) for operating these fertilizing ridge clutches are provided so that the tips protrude forward and can be rotated up and down. ing. The left and right rear wheels 11, 11 are, in plan view, an interval between the first fertilizer feeding section 61 and the second fertilizer feeding section 61, and a fifth fertilizer feeding section 61 and a sixth fertilizer feeding section 61. , Respectively, and the rear wheels 11, 11 and the ridge clutch levers 110,... Are arranged so as not to be between the same fertilizer feeding sections.
[0045]
The single-line clutch 108 (1) for turning on / off the first fertilization operation from the left and the single-line clutch 108 (2) for turning on / off the second fertilization operation from the left are provided between the first and second lines. It is provided in each part. Similarly, the single-line clutch 108 (3) and the single-line clutch 108 (4) are provided at the interval between the third and fourth lines, and the single-line clutch 108 (5) and the single-line clutch 108 (6) are It is provided at the interval of the sixth row. These single-line clutches 108 are operated by the switching knob 111.
[0046]
During the fertilization operation, the feeding roll 77 is rotated forward (in the direction of the arrow in FIG. 6), and the fertilizer in the fertilizer storage tank 60 is fed downward from the feeding outlet 61a. The fertilizer fed from the feed port 61a is carried in the tubular portion 61b and the fertilizer transfer hose 62 by the pressurized air blown from the blower 67, discharged from the distal end outlet of the fertilizer transfer hose 62 to the fertilizer guide 63, and supplied to the field. Is done. The feed rate adjusting mechanism 156 can change the rotation speed of the feed drive shaft 105 to adjust the fertilizer discharge amount steplessly.
[0047]
When the fertilizer is collected, the fertilizer in the fertilizer storage tank 60 is discharged from the fertilizer outlet 83. The discharged fertilizer is carried by the pressurized air blown from the blower 67 through the fertilizer collection pipe 85 and the collection chute 87, discharged from the collection port at the tip of the collection chute, and collected in a collection container or the like.
[0048]
Cables 120,... For connecting / disconnecting the planting ridge clutches 54,... In connection with the on / off of the fertilizing ridge clutches 106,. . Since the ridge clutch levers 110,... Are provided between the powdery material feeding portions without the rear wheels, the cables 120,... Are routed without interfering with the fertilizer transfer hoses 62,. Has become possible.
[0049]
The fertilizer transmission mechanism 27 may be provided in a fertilizer device of a seven-row planting seedling transplanter as shown in FIGS. Also at this time, the fertilizer transmission mechanism 27 is disposed between the fourth and fifth fertilizer feeding sections 61 counted from the left. In the case of a seven-row seedling transplanter, the central row turns on / off the planting ridge clutch and fertilization ridge clutch with only one row, and the other turns on / off the planting ridge clutch and fertilization ridge clutch with two rows. The fertilizing ridge clutch 106 (1.2) for turning on / off the fertilizing operation of Articles 1 and 2 and the fertilizing ridge clutch 106 (3.4) for turning on / off the fertilizing operation of Articles 3 and 4 , Are provided at intervals between the second fertilizer feeding section 61 and the third fertilizer feeding section 61, respectively. The fertilizing ridge clutch 106 (5) for turning on / off the fertilizing operation of Article 5 and the fertilizing ridge clutch 106 (6.7) for turning on / off the fertilizing operation of Articles 6 and 7 are the fertilizer of Article 5. The fertilizer feeding section 61 is provided at an interval between the feeding section 61 and the sixth fertilizer feeding section 61. The ridge clutch levers 110 (1.2), 110 (3.4), 110 (5), and 110 (6.7) that operate these fertilizer ridge clutches are operated to rotate up and down with their tips protruding forward. It is provided to be.
[0050]
With the above configuration, cables 120,... Connecting the ridge clutch levers 110,... And the planting ridge clutches 54,. . Further, since the four ridge clutch levers 110 are arranged at symmetrical positions on both left and right sides of the seat 31, the operation from the seat 31 is easy.
[0051]
As described above, this riding type rice transplanter 1 is provided with the seedling planting portion 4 on the rear side of the traveling vehicle body 2 having the engine 20 as a prime mover, and on the rear upper side of the traveling vehicle body 2 in front of the seedling planting portion 4. A plurality of fertilizer storage tanks 60 serving as powder and granular material storage tanks and a plurality of fertilizer delivery units 61 serving as a powder / particle delivery unit for delivering the powder / granules in the tank 60 are provided. In the planting clutch case 25, which is a transmission branching portion provided below the feeding portion 61, the seedling planting portion 4 and the fertilizer feeding portion 61 are branched and transmitted. The drive-side swing rod 132 extending in the vertical direction is reciprocated in the up-down direction to be transmitted to the fertilizer feeding section 61, and the drive gear 147 provided between the drive path from the drive-side swing rod 132 to the fertilizer feed section 61 and the driven Gear 148 Transmission speed to fertilizer feeding unit 61 is accelerated in the transmission section.
[0052]
Therefore, the riding type rice transplanter 1 operates the seedling planting section 4 while running the fuselage to plant seedlings and activates the fertilizer feeding section 61 by the power from the engine 20 provided on the traveling vehicle body 2. The granular fertilizer in the fertilizer storage tank 60 is fed out and fertilized on the side of the seedling planting position in the field. The upper part is transmitted to the fertilizer feeding part 61 by a vertical reciprocating operation of a drive side swing rod 132 extending vertically from a planting clutch case 25 provided below the fertilizer feeding part 61. Further, the power is transmitted from the drive-side rocking rod 132 to the fertilizer feeding unit 61 via the speed increasing transmission unit.
[0053]
Therefore, even if the operation stroke of the vertical reciprocating operation of the drive side swing rod 132 is relatively small, the fertilizer feeding unit 61 is transmitted at a desired transmission speed by the amount transmitted to the fertilizer feeding unit 61 via the speed increasing transmission unit. , The vertical vibration of the body caused by the reciprocating operation of the drive side swing rod 132 in the vertical direction can be suppressed, and the propagation of the vibration to the operator sitting on the seat 31 on the traveling vehicle body 2 can be suppressed. It is possible to stably stabilize the amount of fertilizer fed while maintaining the desired driving speed of the feed drive shaft 105 and maintaining the desired amount of fertilizer fed by the fertilizer feeding section 61 while keeping the comfort of the operator favorable. it can.
[0054]
In addition, the riding type rice transplanter 1 transmits a driving side swing rod to the right one-way clutch 136R of the pair of one-way clutches 136L and 136R transmitting in the same rotation direction via a reverse rotation transmission mechanism. In the reciprocating operation from 132, powers in opposite directions are transmitted to the pair of one-way clutches 136L, 136R, so that the forward operation and the return operation in the reciprocating operation are transmitted by either one-way clutch 136L, 136R. A speed increasing transmission portion is provided on the transmission lower side of the pair of one-way clutches 136L and 136R and on the transmission upper side of the delivery transmission gear 108a serving as a transmission branch portion to each fertilizer delivery portion 61.
[0055]
Therefore, by transmitting the reciprocating operation from the driving side swing rod 132 to the right one-way clutch 136R via the reverse rotation transmission mechanism, both the forward operation and the return operation in the reciprocating operation are performed by a pair of one-way clutches 136L and 136R. , And the reciprocating operation from the drive side swing rod 132 is continuously transmitted to the one-way clutch shaft 137 by the pair of one-way clutches 136L and 136R. Then, the continuous rotation transmission of the one-way clutch shaft 137 by the pair of one-way clutches 136L and 136R is transmitted to the speed-increasing transmission unit, and rotates integrally with the shaft 105 via the feeding drive shaft 105 from the speed-increasing transmission unit. The transmission is branched by a plurality of feed transmission gears 108a and transmitted to a plurality of fertilizer feed sections 61.
[0056]
Accordingly, the reciprocating operation from the drive-side swing rod 132 is continuously transmitted by the pair of one-way clutches 136L and 136R, so that the fertilizer feeding unit 61 can continuously feed the fertilizer, and also, the pair of one-way clutches. The transmission by any one of the clutches 136L and 136R is transmitted to the speed increasing transmission portion, and the transmission to any of the plurality of fertilizer feeding portions 61 is transmitted via the speed increasing transmission portion. The speed of transmission to each of the fertilizers 61 becomes uniform and stable, and the amount of fertilizer fed from each fertilizer feeding section 61 can be uniformly stabilized.
[0057]
In addition, the riding type rice transplanter 1 has a plurality of fertilizer feeding units 61 arranged side by side on the rear side of the seat 31 of the traveling vehicle body 2, and a fertilizer storage tank 60 provided above the fertilizer feeding unit 61. The counter arm 133 provided on the rear side of the section 61 is transmitted to the fertilizer feeding section 61 via a driven side swinging rod 134 extending forward, and the rotating shaft 162 of the counter arm 133 is moved to move the fertilizer feeding section 61. The feeding amount adjusting shaft 158 of the feeding amount adjusting mechanism 156 for changing and adjusting the feeding amount of the fertilizer extends forward and upward from the counter arm 133, and the feeding amount adjusting handle 159 and the feeding device which are operating tools of the feeding amount adjusting mechanism 156. The quantity indicator 174 is arranged on the front side of the fertilizer feeding section 61.
[0058]
Accordingly, the operation of the counter arm 133 is transmitted to the plurality of fertilizer feeding sections 61 via the driven-side swing rod 134, and the fertilizer feeding sections 61 are operated to feed the fertilizer in the fertilizer storage tank 60 and apply the fertilizer to the field. . Then, the operator operates the feeding amount adjusting handle 159 of the feeding amount adjusting mechanism 156 while confirming the feeding amount adjusting position from the seat 31 side, that is, the front side of the traveling vehicle body 2 with the feeding amount display tool 174, so that the counter arm is operated. By moving the rotation shaft 162 of the 133, the amount of fertilizer to be fed out of the fertilizer feeding section 61 can be changed and adjusted. The feeding amount adjusting mechanism 156 is disposed on one side (left side) of the fertilizing transmission mechanism 27 provided between the fertilizer feeding sections 61 arranged on the left and right sides, and the side of the feeding amount adjusting mechanism 156 that is on the fertilizing transmission mechanism 27 side. Since the dispensing amount indicator 174 is provided in the portion (right side), the worker can feed the dispensing amount indicator from the opposite side (right side) without disturbing the adjacent (left) fertilizer dispensing portion 61 on the adjacent side. Since the user can visually recognize the 174, it is easy to visually recognize the dispensing amount indicator 174. In addition, the feed amount adjusting shaft 158 extends forward and upward from the counter arm 133, and the feed amount adjusting handle 159 and the feed amount indicator 174 are disposed forward of the fertilizer feeding section 61. Since the feed amount indicator 174 is disposed at a relatively high position with respect to the counter arm 133 and the fertilizer feed section 61, the amount of fertilizer remaining in the fertilizer feed section 61 when the fertilizer feed section 61 is maintained is increased. It is less likely to be applied to the adjustment handle 159 and the feeding amount display 174.
[0059]
Therefore, the feed amount adjustment handle 159 can be operated while checking the feed amount adjustment position with the feed amount display tool 174, so that the fertilizer feed amount of the fertilizer feed unit 61 can be finely adjusted with high accuracy. Further, since the feed amount adjusting handle 159 and the feed amount indicator 174 are arranged on the front side of the fertilizer feed portion 61, the fertilizer feed portion 61 is obstructed when the feed amount is adjusted from the seat 31 side of the traveling vehicle body 2, that is, from the front side. And the amount of feeding can be easily adjusted. In addition, since the feed amount adjusting handle 159 and the feed amount indicator 174 are disposed at a relatively high position, it is difficult for fertilizer to be applied, so that the operation of the feed amount adjusting mechanism 156 can be optimized. In the feed amount adjusting shaft 158, a feed amount indicating screw portion 173 and a feed amount adjusting screw portion 157 are provided separately to the front and rear with respect to the fertilizer feeding portion 61, and the feed amount display screw portion 173 and the feed amount adjusting screw portion are provided. Since the 157 is not disposed near the side of the fertilizer feeding section 61, it becomes difficult for the fertilizer to be applied to the feeding amount display screw portion 173 and the feeding amount adjusting screw portion 157, and the operation of the feeding amount adjusting mechanism 156 can be optimized. Can be planned.
[0060]
Also, a one-way clutch shaft 137 is disposed on the front side of the feed drive shaft 105 and the relay shaft 143, and the maintenance of the one-way clutches 136L and 136R without disturbing the feed drive shaft 105 and the components of the reverse rotation transmission mechanism. Can be easily performed from the seat 31 side of the traveling vehicle body 2, that is, from the front side.
[0061]
The fertilizer application transmission mechanism shown in FIGS. 15 and 16 uses the one-way clutch shaft of the left and right one-way clutches 136L and 136R as the feeding drive shaft 105, and the counter support member 163 is formed of a plate. Instead of the first arm 140 and the fourth arm 146, the first shaft 201 and the second shaft 202 are fixed to the outer ring portions 138L and 138R of the left and right one-way clutches 136L and 136R, respectively. . The feeding drive shaft 105 is configured to transmit power from the one-way clutch shaft portion 105a that covers the one-way clutches 136L and 136R to the left and right outer shaft portions 105c via hexagonal shaft portions 105b provided on both left and right sides thereof. ing. The one-way clutch shaft portion 105a and the outer shaft portion 105c are provided with a hexagonal hole 203 into which the hexagonal shaft portion 105b can be inserted. It can be moved by sliding in the direction. An E-shaped retaining ring 204 (spring retaining ring) is attached to an appropriate position of the hexagonal shaft portion 105b, and the E-shaped retaining ring 204 comes into contact with a member 205 on the body side to form a hexagonal shaft portion 105b. Restricts horizontal movement.
[0062]
Then, when performing maintenance such as adjustment and repair of the one-way clutches 136L and 136R, the E-shaped retaining ring 204 is removed and the left and right hexagonal shaft portions 105b are respectively moved to the left and right outer sides to connect with the one-way clutch shaft portion 105a. , The one-way clutches 136L and 136R can be removed together with the one-way clutch shaft portion 105a, and the one-way clutches 136L and 136R are provided while the one-way clutches 136L and 136R are provided on the feeding drive shaft 105. Can be easily removed and maintenance can be facilitated.
[0063]
FIGS. 17 and 18 show a further different reverse rotation transmission mechanism. The reverse rotation transmission mechanism is connected to a third gear 208 via a first gear 206 and a second gear 207 which rotate integrally with an outer ring portion 138L of a left one-way clutch 136L. The third gear 208 is engaged with the fourth gear 209 integral with the outer ring 138R of the one-way clutch 136R on the right side and is transmitted to the outer ring 138R. Since this reverse rotation transmission mechanism is constituted by the gears 206, 207, 208, and 209, the transmission can be performed more reliably and more accurately than the one using the above-described arm or link. The third gear 208 is provided so as to be movable left and right in the direction of its rotation axis by a feed-amount switching lever- 211, and can be disengaged from the second gear 207. Therefore, the reverse rotation transmission mechanism can be set to the non-transmission state by the feed amount switching lever- 211, and the feed is transmitted only by the one-way clutch 136L on the left side to easily change the feed amount to one half by one touch. Can be. In the related art, since the link of the reverse rotation transmission mechanism is removed and the reverse rotation transmission mechanism is set in the non-transmission state, the operation of removing the link is troublesome. Note that a fixing clutch 210 including a driving clutch pawl 210a fixed to the third gear 208 and a driven clutch pawl 210b fixed to the machine body is provided on the right side of the third gear 208. In the transmission state, the third gear 208, which is always meshed with the fourth gear 209, is not rotated so that the outer ring 138R of the one-way clutch 136R on the right side does not rotate carelessly. We are trying to improve.
[0064]
Although the embodiment of the present invention has been described with respect to the riding type rice transplanter 1, the present invention is not limited to the riding type rice transplanter.
[Brief description of the drawings]
FIG. 1 is a side view of a riding fertilizer rice transplanter.
FIG. 2 is a plan view of a riding fertilizer rice transplanter.
FIG. 3 is a side view of a part of the fertilizer application device.
FIG. 4 is a plan view of a part of the fertilizer application device.
FIG. 5 is a rear view of a part of the fertilizer application device.
FIG. 6 is a side sectional view showing a fertilizer feeding section.
FIG. 7 is a diagram showing an opening / closing mechanism of a discharge shutter and an air switching shutter.
FIG. 8 is a side view showing the fertilizer transmission mechanism.
FIG. 9 is a plan view showing a fertilizer application transmission mechanism.
FIG. 10 is an exploded plan sectional view showing a part of a reverse rotation transmission mechanism and a feeding amount adjustment mechanism.
FIG. 11 is an exploded rear sectional view showing the counter supporting member.
FIG. 12 is a cross-sectional view showing a transmission configuration to a fertilizer feeding section.
FIG. 13 is a plan view of a different fertilizer application device.
FIG. 14 is a rear view of a different fertilizer application device.
FIG. 15 is a side view showing a different fertilizer transmission mechanism.
FIG. 16 is a rear sectional view showing a different fertilizer application transmission mechanism.
FIG. 17 is a side view showing a different reverse transmission mechanism.
FIG. 18 is an expanded sectional view showing a different reverse transmission mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Riding type rice transplanter, 2 ... running body, 4 ... seedling planting part, 20 ... engine, 25 ... planting clutch case, 60 ... fertilizer storage tank, 61 ... fertilizer feeding part, 108a ... feeding transmission gear, 132: Drive-side swing rod, 136L, 136R: One-way clutch

Claims (2)

原動機２０を備える走行車体２の後側に苗植付部４を設けると共に、走行車体２の後部上側で苗植付部４の前側に粉粒体貯留タンク６０及び該タンク６０内の粉粒体を繰り出す複数の粉粒体繰出部６１を設け、原動機２０からの動力を走行車体２の後部で粉粒体繰出部６１の下側に設けた伝動分岐部２５で苗植付部４と粉粒体繰出部６１とへ分岐して伝動すると共に、伝動分岐部２５から上下方向に延びる揺動ロッド１３２を上下方向に往復作動させて粉粒体繰出部６１へ伝動する構成の苗移植機において、前記揺動ロッド１３２から粉粒体繰出部６１への伝動経路の間に増速する増速伝動部を設けたことを特徴とする粉粒体吐出機。A seedling planting section 4 is provided on the rear side of the traveling vehicle body 2 having the prime mover 20, and a granular material storage tank 60 and a granular material in the tank 60 are provided on the rear upper side of the traveling vehicle body 2 and in front of the seedling planting section 4. A plurality of powdery material feeding portions 61 are provided for feeding the seedlings, and the power from the prime mover 20 is provided at the rear of the traveling vehicle body 2 below the powdery material feeding portion 61 at the transmission branching portion 25 and the seedling planting portion 4 and the powdery and granular materials. A seedling transplanter configured to transmit to the powder feeding unit 61 by reciprocating the swing rod 132 extending in the vertical direction from the transmission branch unit 25 in the vertical direction while transmitting to the body feeding unit 61 by branching and transmitting. A powdered and granular material discharger comprising a speed increasing transmission portion provided between a transmission path from the oscillating rod 132 to the powder and material delivery portion 61. 同じ回転方向で伝動する一対の一方向クラッチ１３６Ｌ，１３６Ｒのうちの一方１３６Ｒへ逆転伝達機構を介して伝動することにより、揺動ロッド１３２からの往復作動で前記一対の一方向クラッチ１３６Ｌ，１３６Ｒへ互いに逆方向の動力が伝達されて前記往復作動における往作動及び復作動を共に何れかの一方向クラッチ１３６Ｌ，１３６Ｒで伝動する構成とし、前記一対の一方向クラッチ１３６Ｌ，１３６Ｒより伝動下手側で複数の粉粒体繰出部６１への伝動分岐部より伝動上手側に増速伝動部を設けたことを特徴とする請求項１に記載の粉粒体吐出機。By transmitting to one of the pair of one-way clutches 136L and 136R that transmit in the same rotational direction via a reverse rotation transmission mechanism, the reciprocating operation from the swinging rod 132 causes the pair of one-way clutches 136L and 136R to transmit. Powers in opposite directions are transmitted to each other to transmit the forward operation and the return operation in the reciprocating operation by one of the one-way clutches 136L and 136R. 2. The powder-particle discharger according to claim 1, further comprising a speed-enhancing transmission portion provided on a transmission upper side from a transmission branch portion to the powder-particle feeding portion 61. 3.
JP2002268419A 2002-09-13 2002-09-13 Powder and particle dispenser Expired - Fee Related JP4089364B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006034175A (en) * 2004-07-27 2006-02-09 Iseki & Co Ltd Seedling transplanter
KR101175113B1 (en) 2008-12-09 2012-08-21 이세키노우키가부시키가이샤 Agricultural working vehicle
JP2017060418A (en) * 2015-09-24 2017-03-30 株式会社クボタ Paddy working machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006034175A (en) * 2004-07-27 2006-02-09 Iseki & Co Ltd Seedling transplanter
JP4677741B2 (en) * 2004-07-27 2011-04-27 井関農機株式会社 Seedling transplanter
KR101175113B1 (en) 2008-12-09 2012-08-21 이세키노우키가부시키가이샤 Agricultural working vehicle
JP2017060418A (en) * 2015-09-24 2017-03-30 株式会社クボタ Paddy working machine

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