JP2004267014A - Device for planting seedling - Google Patents

Device for planting seedling Download PDF

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Publication number
JP2004267014A
JP2004267014A JP2003058152A JP2003058152A JP2004267014A JP 2004267014 A JP2004267014 A JP 2004267014A JP 2003058152 A JP2003058152 A JP 2003058152A JP 2003058152 A JP2003058152 A JP 2003058152A JP 2004267014 A JP2004267014 A JP 2004267014A
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JP
Japan
Prior art keywords
gear
seedling
final
rotating body
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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JP2003058152A
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Japanese (ja)
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JP2004267014A5 (en
JP4277538B2 (en
Inventor
Takahide Shiozaki
塩崎  孝秀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP2003058152A priority Critical patent/JP4277538B2/en
Priority to KR1020040005960A priority patent/KR100694651B1/en
Priority to CNB200410003752XA priority patent/CN1295952C/en
Publication of JP2004267014A publication Critical patent/JP2004267014A/en
Publication of JP2004267014A5 publication Critical patent/JP2004267014A5/ja
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Publication of JP4277538B2 publication Critical patent/JP4277538B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for planting a seedling designed to actuate seedling planting tools for two rows with one rotary case and accurately actuate the seedling planting tools without applying unreasonable force to an operating mechanism of the seedling planting tools. <P>SOLUTION: Transverse final shafts 25 eccentric to a rotation shaft are freely rotatably provided in a rotor 21 rotating around the rotation axis in the left and right directions and the seedling planting tools 26 are integrally mounted on protruding parts protruding from the rotor 21 to the left and the right in the final shafts 25. Transmission is carried out through a gear train 35, 36, 37, 38 and 39 provided in the rotor 21 to the final gear 39 integrally rotating with the final shafts 25. A fixed gear 40 meshing with the rotating gear and determining an orbit of the rotating gear is served as an internal gear and the final shafts 25 are installed on the inside of the fixed gear 40. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、田植機等の苗移植機に設けられる苗植付装置に関する。
【0002】
【従来の技術】
左右方向の植付駆動軸を回転中心にして回転するロータリケースに苗植付具が設けられ、該苗植付具が円軌道上を移動しながら苗を植付けるロータリ苗植付装置は、例えば特許文献1に記載されているように、一般的には1個のロータリケース(回転ケース)21に苗植付具(移植具)30が1条分だけ設けられている。これは、植付駆動軸(回転軸)22へ伝動する植付伝動ケース12がロータリケースの側方近傍に設けられるため、ロータリケース21の左右両側に苗植付具30を設けることができないからである。
【0003】
【特許文献1】
特公平7−112381号公報
【0004】
特殊な例としては、特許文献2に示すように、左右並列に設けた2個のロータリケース21,21同士、又はロータリケース21と回転体65とを左右方向の軸51で結び、この軸51に苗植付具22を取り付けた構成がある。この構成であれば、1個のロータリケースで2条以上の苗植付具を作動させることも可能である。
【0005】
【特許文献2】
実開昭62−91926号公報
【0006】
【発明が解決しようとする課題】
特許文献1に代表される構成の場合、植付条数と同数だけロータリケースが必要であるから、全体の部品点数が多くコスト高になるという問題点があった。一方、特許文献2の構成は、ロータリケース1個当たり2条以上の苗植付具を設けられるので上記問題点は解決できるが、苗植付具を取り付ける軸51に捩じれが生じやすく、それに起因する破損や植付精度の低下が起きることが想像される。そこで本発明では、1個のロータリケースで2条の苗植付具を作動させることができ、しかもその作動機構に無理な力がかからず正確に作動させられる苗植付装置を提供することを課題としている。
【0007】
【課題を解決するための手段】
上記課題に対して本発明は下記の構成とした。すなわち、請求項1に記載の苗植付装置は、左右方向の回転中心線回りに回転する回転体に前記回転中心線に対し偏心した左右方向の最終軸を回転自在に設け、その最終軸における回転体から左右に突出する突出部に苗植付具を一体に取り付けるとともに、前記最終軸と一体回転する最終ギヤへ前記回転体に設けたギヤ列を介して伝動するようにしたことを特徴としている。
【0008】
回転体が回転中心線回りに回転することにより、苗植付具が円軌道を移動する。その際、苗植付具が取り付けられている最終軸がギヤ列を介して伝動されることにより、苗植付具の姿勢が適宜変化して円軌道上の移動位置に応じた適正姿勢を保持する。ギヤ列を回転体に設けることにより、最終軸を回転体から左右両側に突出させ、その左右両突出部に苗植付具を設けることが可能になる。
【0009】
請求項2に記載の苗植付装置は、請求項1の内容に加え、ギヤ列は、回転体の回転中心線を中心とする円軌道を移動しながら回転する回転ギヤと、該回転ギヤと一体回転する中間ギヤと、該中間ギヤに噛合する第一カウンタギヤと、該第一カウンタギヤと一体回転し最終ギヤに噛合する第二カウンタギヤとからなり、第一カウンタギヤ、第二カウンタギヤ、最終ギヤ及び最終軸の組み合わせを2組設け、回転ギヤ及び中間ギヤの軸を、両組の第一カウンタギヤ及び第二カウンタギヤの軸から等距離で、かつ両組の第一カウンタギヤ及び第二カウンタギヤの軸同士を結ぶ直線からずれた配置する構成とした。
【0010】
請求項3に記載の苗植付装置は、請求項2の内容に加え、回転体停止時に、前後方向の関係に関して、両組の第一カウンタギヤ及び第二カウンタギヤの軸の間に回転ギヤ及び中間ギヤの軸が位置するように構成した。
【0011】
請求項4に記載の苗植付装置は、請求項1乃至3のいずれかの内容に加え、最終軸を駆動ギヤで支持する構成とした。
【0012】
請求項5に記載の苗植付装置は、請求項1乃至4のいずれかの内容に加え、回転体が左右の分割体に分割され、その左右の分割体で駆動ギヤを挟んで固定した構成とした。
【0013】
請求項6に記載の苗植付装置は、請求項1乃至5のいずれかの内容に加え、回転体が左右の分割体に分割され、その左右の分割体を最終軸の近傍に配した結合部材で結合する構成とした。
【0014】
請求項7に記載の苗植付装置は、請求項2乃至6の内容に加え、回転体が左右の分割体に分割され、その回転体の回転中心線に対して一方側に左右の分割体と駆動ギヤとを共に結合する結合部材を設け、他方側に左右の分割体とを結合する結合部材を兼ねる回転ギヤ及び中間ギヤの軸を設けた構成とした。
【0015】
請求項8に記載の苗植付装置は、請求項2乃至6のいずれかの内容に加え、回転体が左右の分割体に分割され、一方の分割体に駆動ギヤ、第一カウンタギヤ及び第二カウンタギヤとを取り付けた構成とした。
【0016】
【発明の効果】
請求項1乃至8の構成とすると、回転体の左右両側に苗植付具を設けられるので、1個の回転体を複数条(通常は2条)で兼用させ、苗植付装置全体の軽量化及びコストダウンを図ることが可能となるとともに、ギヤ列の各ギヤをあまり左右にずらさずに配置することができるので、苗植付具への伝動が安定し植付精度が向上する。具体的には、請求項2乃至8の構成とすることにより、請求項1の構成を良好な形態で実現できる。
【0017】
請求項2の場合は、2組設けられた第一カウンタギヤ、第二カウンタギヤ、最終ギヤ及び最終軸の組み合わせに対し中間ギヤを共用させることができるとともに、回転体を小型にすることができ、作動の安定化及び高速化、軽量化、コストダウンが図れる。請求項3の場合は、回転体停止時の前後重量バランスが良好となり、停止位置が安定する。請求項4の場合は、最終軸の撓みを防止でき、苗植付具の作動精度が向上する。
【0018】
また、請求項5の場合は、駆動ギヤの変形を防止でき、装置全体の作動が安定する。請求項6の場合は、最終軸の支持が安定し、苗植付具の作動が安定する。請求項7の場合は、左右の分割体をバランス良く結合することができるとともに、駆動ギヤ、回転ギヤ及び中間ギヤの支持が安定する。請求項8の場合は、左右の分割体の組付けや分離が容易になる。
【0019】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づき説明する。
図1及び図2は本発明の苗植付装置を装備した乗用田植機を表している。この乗用田植機1は、エンジン2を搭載し駆動回転する各左右一対の前輪3,3及び後輪4,4を備えた走行車体5の後方に、昇降リンク装置6を介して6条植の苗植付部7が連結されている。図中の符号8は操縦座席、9は前輪3,3を操向するステアリングハンドル、10は予備の苗を載せておく予備苗載台である。
【0020】
苗植付部7は、走行車体5から伝動入力される伝動ケース12の上側に前部が上位となるように傾斜した苗載台13を設けるとともに、伝動ケース12の植付伝動部12a,…の後端部に2条ごとで1組の苗植付装置14,…を設けている。フロート15,…を接地させた状態で機体を進行させると、苗載台13が左右に往復移動して台上のマット苗を苗載台下端側の苗取出口16,…に一株づつ順次供給し、それを苗植付装置14,…が掻き取って圃場に植付ける。
【0021】
苗植付装置14は、図3乃至図9に示す構成となっている。植付伝動部12aの後端に側面視環状の固定支持体20が一体に設けられ、その内側に左右の分割体21L,21Rからなる回転体としてのロータリケース21がベアリング22及びブッシュ23を介して回動自在に嵌合している。ロータリケース21には、その回転中心線24を中心とする円周上に互いに180度の位相で2本の最終軸25,25が回動自在に設けられ、それぞれの最終軸25,25のロータリケースから突出する左右両端部に苗植付具26,26が一体に取り付けられている。
【0022】
ロータリケース21の左右分割体21L,21Rの間には、該ケースを駆動する駆動ギヤ30が設けられている。この駆動ギヤ30は、植付伝動部12a内のチェーン31を介して伝動される軸32に取り付けた伝動ギヤ33と噛み合い、一定方向に一定速度で回転する。
【0023】
また、ロータリケース21内には、最終軸25,25へ伝動するためのギヤ列が設けられている。このギヤ列は、ロータリケース21の回転中心線24を中心とする円軌道を移動しながら回転する回転ギヤ35と、該回転ギヤと一体回転する中間ギヤ36と、該中間ギヤに噛合する第一カウンタギヤ37,37と、該第一カウンタギヤと一体回転する第二カウンタギヤ38,38と、最終軸25,25に取り付けられ第二カウンタギヤと噛合する最終ギヤ39,39とからなっている。第一カウンタギヤ37、第二カウンタギヤ38、及び最終ギヤ39の組み合わせは2組設けられており、中間ギヤ36の回転が2系統に分岐して2本の最終軸25へそれぞれ伝達される。回転ギヤ35は、固定支持体20に固定された内歯の固定ギヤ40と噛合し、ロータリケース21の回転に連動して前記作動をするようになっている。
【0024】
駆動ギヤ30が回転すると、それと一体のロータリケース21も回転し、一対の苗植付具26,26が円軌道を移動する。そのとき、ロータリケース21の回転に連動する回転ギヤ35の作動がギヤ列を介して最終軸25,25へ伝達され、苗植付具26,26の姿勢が変化する。第二カウンタギヤ38及び最終ギヤ39は非円形ギヤであるため、苗植付具26の姿勢変化には緩急が生じる。結果的に、苗植付具26は図10乃至図15に示すように姿勢を変化する。これを一つの図にまとめて表すと図16のようになる。苗植付具26は逐次姿勢を変えつつ、後記苗分離爪47の先端が軌跡Pを描くように作動する。苗分離爪47の移動速度は、苗取出位置A及び苗植付位置B付近で遅く、両位置A,B間は速くなっている。機体の移動を加味した苗分離爪47の先端動軌跡P′は図17のようになる。
【0025】
また、ロータリケース21の内部には、最終軸25に一体回転するように取り付けた制動カム42と、該制動カムの外周面に当接する制動アーム43と、該制動アームを制動カム42に押し付けるスプリング44とからなる苗植付具の位相ずれ防止機構が設けられている。この位相ずれ防止機構は、苗植付具26が苗取出位置A及び苗植付位置Bにある時に最終ギヤ39の回転を制動し、各ギヤ間のバックラッシュを吸収して、後述する苗分離及び苗植付の動作が正確に行われように作用する。なお、スプリング44は、2組の位相ずれ防止機構で共用である。
【0026】
苗植付具26は、コッタピン46により最終軸25に一体作動するように取り付けられている。苗植付具26には、先端部が鋭利に形成された二股フォーク状の苗分離爪47と、該苗分離爪の下側で突出・後退作動をする苗押出体48とが設けられている。
【0027】
苗押出体48の作動機構は次のようになっている。すなわち、最終軸25に回転自在に嵌合する押出カム50の外周面に、アーム軸51に回動自在に軸支されたカムアーム52が摺接している。また、アーム軸51にはカムアーム52と一体に回動する押出規制アーム53が軸支されていて、該押出規制アームの先端部と苗押出体48を支持する押出ロッド54の端部とが継手部材55を介して連結されている。継手部材55は、押出ロッド54を突出させる側に押出スプリング56によって付勢されている。
【0028】
最終軸25が回転すると、該軸に対し押出カム50が相対的に回転し、押出カム50とカムアーム52とからなるカム機構の働きで押出規制アーム53が揺動する。押出スプリング56を圧縮する位置に押出規制アーム53があるときは、苗押出体48が後退した状態にある。その位置から押出規制アーム53が回動して押出スプリング56の圧縮が緩和されると、押出スプリング56の弾発力で押出ロッド54が押し出され、苗押出体48が突出する。
【0029】
乗用田植機1での作業時、前述したように、一対の苗植付具26,26が先端軌跡Pを描きながら同一軌道上を互いに1/2周期の間隔を保ったまま移動する。苗取出位置Aで苗分離爪47が苗取出口16の苗を一株分に分割して取り出す。このとき、苗押出体48は後退した状態にある。苗植付具26が下動して苗植付位置Bまで移動すると、苗押出体48が突出し、苗分離爪47が保持している苗の土部を下向きに押すことにより、苗を苗分離爪47から押し出して圃場に植付ける。その後、苗植付具26が下動時よりも後方の軌道を通って上動するとともに、苗押出体48が後退する。苗分離爪47先端の移動速度を苗取出位置A及び苗植付位置B付近で遅く、両位置A,B間は速くすることにより、苗の取出し及び植付けの精度は高く、かつ高速の植付けを可能にしている。
【0030】
このように、この苗植付装置14は、固定支持体20により外側から回転自在に支持されたロータリケース(回転体)21の左右両側に苗植付具26を設け、1個のロータリケースで同時に2条に苗を植付けるように構成されている。この構成を可能にするとともに、機能性向上、コスト低減のために、この苗植付装置には以下の特徴的な構造が採用されている。
【0031】
まず、回転体であるロータリケース21は左右の分割体21L,21Rに分割されていて、その間に駆動ギヤ30を挟み込んで固定している。これにより、ロータリケース外から駆動ギヤ30への伝動を可能にするとともに、駆動ギヤ30を変形しにくくしている。駆動ギヤ30の外径は固定支持体20の内径よりは小さく、側面視で駆動ギヤ30が固定支持体20と重複しないようにしている。これにより、駆動ギヤ30ごとロータリケース21を固定支持体20から容易に着脱できる。
【0032】
また、駆動ギヤ30の外径は最終軸25,25が配置された円周よりも大きく、最終軸25,25は駆動ギヤ30を貫通して設けられている。このため、最終軸25,25の中間部が駆動ギヤ30に支持された状態となり、最終軸25,25の撓み防止に有効である。
【0033】
最終軸25,25へ伝動するギヤ列は、ロータリケース21の左右中央に位置する駆動ギヤ30の左右一方(図示例では右側)に回転ギヤ35があり、反対側に中間ギヤ36、第一カウンタギヤ37,37、第二カウンタギヤ38,38、及び最終ギヤ39,39がある配置としている。駆動ギヤ30は中心部が開口しており、この開口部30aに回転ギヤ35及び中間ギヤ36を取り付けた中間軸60が挿通されている。このように、ギヤ列の各ギヤを左右に振り分けて配置することにより、左右のバランスが良好になる。
【0034】
前記中間軸60は、第一、第二両カウンタギヤ37,38をそれぞれ取り付けた2本のカウンタ軸61,61から当距離の位置にあり、かつ側面視で2本のカウンタ軸を結ぶ直線62から外れた位置に配置している。また、2本のカウンタ軸の間隔Dは、第一カウンタギヤ37又は第二カウンタギヤ38の直径の2倍よりも小さくしている。これにより、ギヤ列が比較的簡略でコンパクトな構成とすることができる。ギヤ列は全体が最終軸25,25と重複しないように配置されている。
【0035】
苗植付装置14を停止させる場合、定位置クラッチにより一対の苗植付具26,26が同じ高さで停止するようになっているが、この時、2本のカウンタ軸61,61も同じ高さで停止し、その間に中間軸60が位置するようになっている。このため、苗植付装置停止時の前後重量バランスが良好で、停止位置が安定している。また、中間軸60が2本のカウンタ軸を結ぶ直線62の下側で停止した場合は、中間ギヤ36がロータリケース21内の潤滑油に浸った状態となるので、次回植付けを開始するときの動作がスムーズであるという効果もある。
【0036】
回転ギヤ35と噛合して該回転ギヤの軌道を決定する固定ギヤ40は内歯ギヤとし、これを固定支持体20に固定して取り付けている。その取付は、固定ギヤ40の外周4箇所に形成されている凸部40a,…を固定支持体20に形成された凹部に係合させ、固定支持体20に固定ギヤ40を回り止めした状態で固定している。この取付方法は、確実に回り止めできるうえ、ボルト等の固着具が不要で構造が簡単であるという利点がある。固定ギヤ40はロータリケース21と一体に構成してもよい。
【0037】
固定ギヤ40は、最終軸25,25の外側に、側面視でロータリケース21と重複しないように配置されている。また、最終ギヤ25,25は固定支持体20に側面視で重複しないようになっている。このため、ロータリケース21の着脱に際して、固定ギヤ40や最終ギヤ25,25が邪魔にならない。
【0038】
ロータリケースの左右分割体21L,21Rは、締付けボルト65により4箇所で互いに連結されている。図4に図示されているように、締付けボルト65の位置を最終軸25,25を挟む両側近傍に配置することにより、最終軸25,25を安定して支持できる。これら4本の締付けボルトのうち2本は左の分割体21L側から挿入され、残りの2本は右の分割体21R側から挿入される。左右の左右分割体21L,21Rは同じ部品で共用しているため、上記のように締付けボルト65の挿入方向を左右に分けている。
【0039】
駆動ギヤ30は、最終軸25と90度の位相をなす2箇所で固定されている。回転ギヤ35がある側の固定箇所は、両端に雄ねじ部66aと雌ねじ部66bとが形成された第一結合部材66の雄ねじ部66aを左の分割体21Lにナット67で固着するとともに、その第一結合部材66の雌ねじ部66bに駆動ギヤ30をボルト68で固定している。反対側の固定箇所は、両端に雄ねじ部69a,69bが形成された第二結合部材69の一方の雄ねじ部69aを左の分割体21Lに螺着し、その雄ねじ側に外嵌させた筒体70と第二結合部材の段部69cとの間で駆動ギヤ30を挟んで固定し、他方の雄ねじ部69bを右の分割体21Rにナット67で固着している。
【0040】
中間軸60は、両端に雄ねじ部60a,60bが形成されており、一方の雄ねじ部60aを左の分割体21Lの雌ねじ部71に螺着し、他方の雄ねじ部60bを右の分割体21Rの通孔72に挿通して、その突出部にナット67で螺着している。つまり、中間軸60は左右の分割体21L,21Rを結合する結合部材を兼ねている。このように、ロータリケース21の回転中心24を挟んで一方側には両分割体21L,21Rと駆動ギヤ30とを共に結合する結合部材(第二結合部材)69を設け、反対側には左右両方の分割体21L,21Rの結合部材を兼ねる中間軸60を設けている。なお、中間軸60が取り付けられない左の分割体21Lの通孔72には栓73が取り付けられている。
【0041】
図18に示すように、分割体21L,21Rの外周部に嵌合するブッシュ80を内端側が閉じたドラム状とし、その内端壁部80aに形成された中間軸穴81及び締付けボルト孔82,…に中間軸60及び締付けボルト65,…をそれぞれ挿通する構成とすれば、中間軸60及び締付けボルト65,…をブッシュ80でも支持することができ、支持強度が向上する。さらに、上記支持強度の向上により、アルミ鋳物、樹脂等の軽量素材を使用することが可能となり、装置の軽量化や作動安定化を図れる。
【0042】
以上に挙げた特徴的な構造は、ロータリケース21とそれを支持する固定支持体20とについてであり、それよりも先の苗植付具26は含まれていないので、本発明は苗植付装置に限定せず、苗載台から苗を取り出すだけの動作を行う苗取出装置にも適用できる。
【図面の簡単な説明】
【図1】乗用田植機の側面図である。
【図2】図1に示す乗用田植機の平面図である。
【図3】苗植付装置の外観側面図である。
【図4】苗植付装置の伝動機構を示す側面図その1である。
【図5】苗植付装置の伝動機構を示す側面図その2である。
【図6】S1−S1断面図である。
【図7】S2−S2断面図である。
【図8】S3−S3断面図である。
【図9】苗植付具の側面断面図である。
【図10】ギヤ列の状態と苗植付具の状態との関係を示す図その1である。
【図11】ギヤ列の状態と苗植付具の状態との関係を示す図その2である。
【図12】ギヤ列の状態と苗植付具の状態との関係を示す図その3である。
【図13】ギヤ列の状態と苗植付具の状態との関係を示す図その4である。
【図14】ギヤ列の状態と苗植付具の状態との関係を示す図その5である。
【図15】ギヤ列の状態と苗植付具の状態との関係を示す図その6である。
【図16】苗植付具の静軌跡を示す図である。
【図17】苗植付具の動軌跡を示す図である。
【図18】異なるブッシュの装着方法を示す斜視図である。
【符号の説明】
1 乗用田植機
5 走行車体
6 昇降リンク装置
7 苗植付部
14 苗植付装置
20 固定支持体
21 ロータリケース(回転体)
21L,21R 分割体
24 回転体の回転中心線
25 最終軸
26 苗植付具
30 駆動ギヤ
35 回転ギヤ
36 中間ギヤ
37 第一カウンタギヤ
38 第二カウンタギヤ
39 最終ギヤ
40 固定ギヤ
180 ブッシュ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seedling planting device provided in a seedling transplanter such as a rice transplanter.
[0002]
[Prior art]
A seedling planting tool is provided in a rotary case that rotates about the planting drive shaft in the left-right direction as a rotation center, and the seedling planting tool moves a circular orbit to plant a seedling. As described in Patent Literature 1, generally, one rotary case (rotating case) 21 is provided with one seedling planting tool (transplanting tool) 30 for one row. This is because the planting transmission case 12 for transmitting to the planting drive shaft (rotary shaft) 22 is provided near the side of the rotary case, so that the seedling planting tool 30 cannot be provided on the left and right sides of the rotary case 21. It is.
[0003]
[Patent Document 1]
Japanese Patent Publication No. 7-112381
As a special example, as shown in Patent Literature 2, two rotary cases 21 and 21 provided in parallel on the left and right, or the rotary case 21 and the rotating body 65 are connected by a shaft 51 in the left and right direction. There is a configuration in which a seedling attaching tool 22 is attached to the apparatus. With this configuration, it is possible to operate two or more seedling-planting tools with one rotary case.
[0005]
[Patent Document 2]
Japanese Utility Model Application Laid-Open No. 62-91926 [0006]
[Problems to be solved by the invention]
In the case of the configuration represented by Patent Literature 1, the same number of rotary cases as the number of planting strips is required, so that there is a problem that the number of parts as a whole is large and the cost is high. On the other hand, the configuration of Patent Literature 2 can solve the above problem because two or more seedlings are provided per rotary case. However, the shaft 51 for attaching the seedling is likely to be twisted. It is conceivable that damages and deterioration of planting accuracy may occur. Therefore, the present invention provides a seedling planting apparatus that can operate two seedling planting tools with one rotary case and that can be accurately operated without exerting an excessive force on the operation mechanism. Is an issue.
[0007]
[Means for Solving the Problems]
The present invention has the following configuration to solve the above problem. In other words, the seedling planting apparatus according to claim 1 is provided with a left-right final axis eccentric to the rotation center line rotatably provided on a rotating body that rotates around the left-right rotation center line, The seedling attachment is integrally attached to a protruding portion projecting left and right from the rotating body, and transmitted to a final gear that rotates integrally with the final shaft via a gear train provided on the rotating body. I have.
[0008]
The rotation of the rotating body about the rotation center line causes the seedling attachment to move in a circular orbit. At this time, the final shaft on which the seedling-planting implement is mounted is transmitted via the gear train, so that the posture of the seedling-planting implement changes appropriately and maintains an appropriate posture according to the moving position on the circular orbit. I do. By providing the gear train on the rotating body, it is possible to make the final shaft project from the rotating body to the left and right sides, and to provide seedling attachments at both left and right projected portions.
[0009]
According to a second aspect of the present invention, in addition to the first aspect, the gear train includes a rotating gear that rotates while moving along a circular orbit about a rotation center line of the rotating body; An intermediate gear that rotates integrally, a first counter gear that meshes with the intermediate gear, and a second counter gear that rotates integrally with the first counter gear and meshes with the final gear; , Two sets of combinations of the final gear and the final shaft are provided, and the shafts of the rotating gear and the intermediate gear are equidistant from the axes of the first counter gear and the second counter gear of both sets, and both sets of the first counter gear and The second counter gear is configured to be displaced from a straight line connecting the axes of the second counter gear.
[0010]
According to a third aspect of the present invention, in addition to the contents of the second aspect, when the rotating body is stopped, the rotation gear is disposed between the shafts of the first counter gear and the second counter gear with respect to the front-rear direction when the rotating body is stopped. And the shaft of the intermediate gear is located.
[0011]
According to a fourth aspect of the present invention, in addition to any one of the first to third aspects, the seedling-planting device has a configuration in which a final shaft is supported by a drive gear.
[0012]
According to a fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the seedling plant is configured such that the rotating body is divided into left and right divided bodies, and the left and right divided bodies sandwich a driving gear and are fixed. It was.
[0013]
According to a sixth aspect of the present invention, in addition to any one of the first to fifth aspects, the rotating body is divided into right and left divided bodies, and the left and right divided bodies are arranged near the final axis. It was configured to be joined by members.
[0014]
According to a seventh aspect of the present invention, in addition to the contents of the second to sixth aspects, the rotating body is divided into left and right divided bodies, and the left and right divided bodies are arranged on one side with respect to the rotation center line of the rotating body. A coupling member for coupling the drive gear and the driving gear together is provided, and a shaft of a rotary gear and an intermediate gear that also serves as a coupling member for coupling the left and right divided bodies is provided on the other side.
[0015]
In the seedling planting apparatus according to claim 8, in addition to the contents of claims 2 to 6, the rotating body is divided into left and right divided bodies, and one of the divided bodies has a driving gear, a first counter gear, and a The configuration was such that two counter gears were attached.
[0016]
【The invention's effect】
According to the configuration of claims 1 to 8, since the seedling attachments are provided on both the left and right sides of the rotating body, one rotating body can be shared by a plurality of rows (usually two rows), and the weight of the entire seedling planting apparatus is reduced. It is possible to reduce the number of gears in the gear train without shifting the gears to the left and right, so that transmission to the seedling planting tool is stabilized and planting accuracy is improved. Specifically, by adopting the configurations of claims 2 to 8, the configuration of claim 1 can be realized in a favorable mode.
[0017]
In the case of claim 2, the intermediate gear can be shared with the combination of the two sets of the first counter gear, the second counter gear, the final gear, and the final shaft, and the rotating body can be downsized. In addition, it is possible to stabilize the operation, increase the speed, reduce the weight, and reduce the cost. In the case of the third aspect, the front-rear weight balance at the time of stopping the rotating body becomes good, and the stopping position is stabilized. In the case of claim 4, the bending of the final shaft can be prevented, and the operation accuracy of the seedling planting tool is improved.
[0018]
In the case of the fifth aspect, the deformation of the drive gear can be prevented, and the operation of the entire apparatus is stabilized. In the case of claim 6, the support of the final shaft is stabilized, and the operation of the seedling-planting tool is stabilized. In the case of claim 7, the left and right divided bodies can be connected in a well-balanced manner, and the support of the drive gear, the rotating gear and the intermediate gear is stabilized. In the case of claim 8, assembling and separating the left and right divided bodies are facilitated.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a riding rice transplanter equipped with the seedling transplanting device of the present invention. The riding rice transplanter 1 is provided with a six-row plantation via an elevating link device 6 behind a traveling body 5 having a pair of left and right front wheels 3, 3 and rear wheels 4, 4 on which an engine 2 is mounted and driven to rotate. The seedling planting part 7 is connected. In the drawing, reference numeral 8 denotes a control seat, 9 denotes a steering handle for steering the front wheels 3 and 3, and 10 denotes a spare seedling mounting table on which spare seedlings are placed.
[0020]
The seedling planting section 7 is provided with a seedling mounting table 13 that is inclined so that a front portion thereof becomes higher in the upper side of a transmission case 12 to which power is input from the traveling vehicle body 5, and a planting transmission section 12 a of the transmission case 12. A set of seedling planting devices 14,... When the airframe advances while the floats 15,... Are in contact with the ground, the seedling table 13 reciprocates left and right, and the mat seedlings on the table are sequentially transferred to the seedling outlets 16,. , And the seedlings are scraped and planted in the field.
[0021]
The seedling planting apparatus 14 has a configuration shown in FIGS. An annular fixed support 20 is integrally provided at the rear end of the planting transmission section 12a, and a rotary case 21 as a rotating body composed of left and right divided bodies 21L and 21R is provided on the inner side thereof via a bearing 22 and a bush 23. And are rotatably fitted. The rotary case 21 is provided with two final shafts 25, 25 rotatably on the circumference around the rotation center line 24 at a phase of 180 degrees with respect to each other. Seedling attachments 26 are integrally attached to both right and left ends protruding from the case.
[0022]
A drive gear 30 for driving the rotary case 21 is provided between the left and right divided bodies 21L and 21R. The drive gear 30 meshes with a transmission gear 33 attached to a shaft 32 that is transmitted via a chain 31 in the planting transmission section 12a, and rotates at a constant speed in a fixed direction.
[0023]
In the rotary case 21, a gear train for transmitting power to the final shafts 25, 25 is provided. The gear train includes a rotating gear 35 that rotates while moving along a circular orbit about the rotation center line 24 of the rotary case 21, an intermediate gear 36 that rotates integrally with the rotating gear, and a first gear that meshes with the intermediate gear. It comprises counter gears 37, 37, second counter gears 38, 38 integrally rotating with the first counter gear, and final gears 39, 39 attached to the final shafts 25, 25 and meshing with the second counter gear. . Two combinations of the first counter gear 37, the second counter gear 38, and the final gear 39 are provided, and the rotation of the intermediate gear 36 branches into two systems and is transmitted to the two final shafts 25, respectively. The rotary gear 35 meshes with a fixed gear 40 of internal teeth fixed to the fixed support 20, and performs the above operation in conjunction with the rotation of the rotary case 21.
[0024]
When the drive gear 30 rotates, the rotary case 21 integral therewith also rotates, and the pair of seedling-planting tools 26 move in a circular orbit. At this time, the operation of the rotating gear 35 that is linked to the rotation of the rotary case 21 is transmitted to the final shafts 25, 25 via the gear train, and the posture of the seedling attachments 26, 26 changes. Since the second counter gear 38 and the final gear 39 are non-circular gears, the posture change of the seedling planting tool 26 is slowed down. As a result, the posture of the seedling attachment 26 changes as shown in FIGS. FIG. 16 shows this in a single diagram. The seedling attaching tool 26 operates so that the tip of the seedling separation claw 47 described later draws a locus P while sequentially changing the posture. The moving speed of the seedling separating claw 47 is low near the seedling extracting position A and the seedling planting position B, and is high between the two positions A and B. The tip movement locus P ′ of the seedling separation claw 47 taking into account the movement of the machine is as shown in FIG.
[0025]
Further, inside the rotary case 21, a brake cam 42 attached so as to rotate integrally with the final shaft 25, a brake arm 43 abutting on the outer peripheral surface of the brake cam, and a spring for pressing the brake arm against the brake cam 42. 44 is provided. This phase shift prevention mechanism brakes the rotation of the final gear 39 when the seedling placement tool 26 is at the seedling removal position A and the seedling placement position B, absorbs backlash between the gears, and separates the seedling separation described later. And it acts so that the operation of planting seedlings is performed accurately. The spring 44 is shared by the two sets of phase shift prevention mechanisms.
[0026]
The seedling attachment 26 is attached to the final shaft 25 by a cotter pin 46 so as to be integrally operated. The seedling attaching tool 26 is provided with a forked fork-shaped seedling separating claw 47 having a sharp tip, and a seedling extruded body 48 that protrudes and retracts below the seedling separating claw. .
[0027]
The operation mechanism of the seedling extruded body 48 is as follows. That is, the cam arm 52 rotatably supported by the arm shaft 51 is in sliding contact with the outer peripheral surface of the pushing cam 50 rotatably fitted to the final shaft 25. An extruding control arm 53 that rotates integrally with the cam arm 52 is pivotally supported on the arm shaft 51, and the distal end of the extruding control arm and the end of the extruding rod 54 that supports the seedling extruded body 48 are connected by a joint. They are connected via a member 55. The joint member 55 is urged by a pushing spring 56 to the side where the pushing rod 54 projects.
[0028]
When the final shaft 25 rotates, the pushing cam 50 rotates relatively to the shaft, and the pushing regulating arm 53 swings by the action of the cam mechanism including the pushing cam 50 and the cam arm 52. When the push-out regulating arm 53 is located at a position where the push-out spring 56 is compressed, the seedling push-out body 48 is in a retracted state. When the push-out regulating arm 53 rotates from that position and the compression of the push-out spring 56 is relaxed, the push-out rod 54 is pushed out by the elastic force of the push-out spring 56, and the seedling extruded body 48 projects.
[0029]
At the time of the operation with the riding rice transplanter 1, as described above, the pair of seedling attaching tools 26, 26 move on the same orbit while maintaining a half cycle interval while drawing the tip trajectory P. At the seedling removal position A, the seedling separating claw 47 takes out the seedling at the seedling removal outlet 16 by dividing it into one plant. At this time, the seedling extruded body 48 is in a retracted state. When the seedling placement tool 26 moves downward and moves to the seedling placement position B, the seedling extruded body 48 protrudes and pushes the soil portion of the seedling held by the seedling separation claw 47 downward to separate the seedling. It is extruded from the nail 47 and planted in the field. Thereafter, the seedling attaching tool 26 moves upward through the orbit behind the downward movement, and the seedling extruded body 48 retreats. The moving speed of the tip of the seedling separation claw 47 is slow near the seedling picking position A and the seedling planting position B, and is high between the two positions A and B, so that the accuracy of picking and planting the seedlings is high and high-speed planting is possible. Making it possible.
[0030]
In this way, the seedling planting apparatus 14 is provided with the seedling planting tools 26 on both the left and right sides of the rotary case (rotating body) 21 rotatably supported from the outside by the fixed support body 20. At the same time, the seedlings are planted in two rows. The following characteristic structure is adopted in this seedling-planting apparatus in order to make this configuration possible, and to improve functionality and reduce costs.
[0031]
First, the rotary case 21, which is a rotating body, is divided into left and right divided bodies 21L and 21R, and the drive gear 30 is sandwiched and fixed therebetween. This enables transmission to the drive gear 30 from outside the rotary case and makes the drive gear 30 less deformable. The outer diameter of the drive gear 30 is smaller than the inner diameter of the fixed support 20 so that the drive gear 30 does not overlap with the fixed support 20 in a side view. Thus, the rotary case 21 together with the drive gear 30 can be easily attached to and detached from the fixed support 20.
[0032]
The outer diameter of the drive gear 30 is larger than the circumference on which the final shafts 25, 25 are arranged, and the final shafts 25, 25 are provided through the drive gear 30. Therefore, the intermediate portions of the final shafts 25, 25 are supported by the drive gear 30, which is effective for preventing the final shafts 25, 25 from bending.
[0033]
The gear train transmitted to the final shafts 25, 25 has a rotary gear 35 on one of the left and right sides (right side in the illustrated example) of the drive gear 30 located at the left and right center of the rotary case 21, an intermediate gear 36 on the opposite side, and a first counter. The gears 37, 37, the second counter gears 38, 38, and the final gears 39, 39 are arranged. The drive gear 30 has an opening at the center, and the intermediate shaft 60 to which the rotating gear 35 and the intermediate gear 36 are attached is inserted through the opening 30a. In this way, by arranging the gears of the gear train separately on the left and right, the balance on the left and right is improved.
[0034]
The intermediate shaft 60 is located at a position equidistant from the two counter shafts 61, 61 to which the first and second counter gears 37, 38 are attached, respectively, and is a straight line 62 connecting the two counter shafts in a side view. It is located at a position outside the range. Further, the distance D between the two counter shafts is smaller than twice the diameter of the first counter gear 37 or the second counter gear 38. Thus, the gear train can be made relatively simple and compact. The gear train is arranged so that the whole does not overlap with the final shafts 25, 25.
[0035]
When the seedling planting device 14 is stopped, the pair of seedling planting tools 26, 26 is stopped at the same height by the fixed position clutch. At this time, the two counter shafts 61, 61 are also the same. It stops at the height, during which the intermediate shaft 60 is positioned. Therefore, the weight balance before and after the seedling planting device is stopped is good, and the stopping position is stable. Further, when the intermediate shaft 60 stops below the straight line 62 connecting the two counter shafts, the intermediate gear 36 is immersed in the lubricating oil in the rotary case 21, so that the next time planting is started. There is also an effect that the operation is smooth.
[0036]
The fixed gear 40 that meshes with the rotating gear 35 to determine the trajectory of the rotating gear is an internal gear, which is fixedly attached to the fixed support 20. The attachment is performed in a state where the protrusions 40a,... Formed at four places on the outer periphery of the fixed gear 40 are engaged with the recesses formed in the fixed support 20, and the fixed gear 40 is prevented from rotating around the fixed support 20. It is fixed. This mounting method has the advantages that the rotation can be reliably prevented, and that a fixing tool such as a bolt is not required and the structure is simple. The fixed gear 40 may be formed integrally with the rotary case 21.
[0037]
The fixed gear 40 is arranged outside the final shafts 25, 25 so as not to overlap with the rotary case 21 in a side view. Further, the final gears 25, 25 do not overlap the fixed support 20 in a side view. Therefore, when the rotary case 21 is attached or detached, the fixed gear 40 and the final gears 25 and 25 do not interfere.
[0038]
The left and right divided bodies 21 </ b> L and 21 </ b> R of the rotary case are connected to each other at four places by fastening bolts 65. As shown in FIG. 4, the final shafts 25, 25 can be stably supported by arranging the positions of the tightening bolts 65 near both sides of the final shafts 25, 25. Two of these four tightening bolts are inserted from the left divided body 21L side, and the other two are inserted from the right divided body 21R side. Since the left and right divided bodies 21L and 21R are shared by the same parts, the insertion direction of the tightening bolt 65 is divided into left and right as described above.
[0039]
The drive gear 30 is fixed at two positions that are 90 degrees in phase with the final shaft 25. The fixed portion on the side where the rotary gear 35 is located is such that the male screw portion 66a of the first coupling member 66 having the male screw portion 66a and the female screw portion 66b formed at both ends is fixed to the left divided body 21L with the nut 67, and The drive gear 30 is fixed to the female screw portion 66b of the one coupling member 66 with a bolt 68. The opposite fixed portion is a cylindrical body in which one male screw portion 69a of the second coupling member 69 having male screw portions 69a and 69b formed at both ends is screwed to the left divided body 21L, and externally fitted to the male screw side. The drive gear 30 is sandwiched and fixed between 70 and the step portion 69c of the second coupling member, and the other male screw portion 69b is fixed to the right divided body 21R with a nut 67.
[0040]
The intermediate shaft 60 has male screw portions 60a and 60b formed at both ends. One male screw portion 60a is screwed to the female screw portion 71 of the left divided body 21L, and the other male screw portion 60b is formed of the right divided body 21R. It is inserted into the through hole 72 and is screwed to the protruding portion with a nut 67. That is, the intermediate shaft 60 also serves as a connecting member for connecting the left and right divided bodies 21L and 21R. As described above, the coupling member (second coupling member) 69 that couples the divided bodies 21L and 21R and the drive gear 30 together is provided on one side of the rotation center 24 of the rotary case 21 and the left and right sides are provided on the opposite side. An intermediate shaft 60 is provided, which also serves as a connecting member for the two divided bodies 21L and 21R. A plug 73 is attached to the through hole 72 of the left divided body 21L to which the intermediate shaft 60 is not attached.
[0041]
As shown in FIG. 18, a bush 80 fitted to the outer peripheral portions of the divided bodies 21 </ b> L and 21 </ b> R is formed in a drum shape with an inner end closed, and an intermediate shaft hole 81 and a tightening bolt hole 82 formed in the inner end wall 80 a. , The intermediate shaft 60 and the tightening bolts 65,... Can be respectively supported by the bush 80, and the supporting strength is improved. Further, by improving the support strength, it is possible to use a lightweight material such as an aluminum casting or a resin, so that the device can be reduced in weight and operation can be stabilized.
[0042]
The characteristic structure described above is about the rotary case 21 and the fixed support 20 that supports the rotary case 21. Since the seedling planting tool 26 prior to the rotary case 21 is not included, the present invention provides a method for planting seedlings. The present invention is not limited to the device, and can be applied to a seedling removal device that performs an operation of merely removing a seedling from a seedling mounting table.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter.
FIG. 2 is a plan view of the riding rice transplanter shown in FIG.
FIG. 3 is an external side view of the seedling planting apparatus.
FIG. 4 is a first side view showing a transmission mechanism of the seedling planting apparatus.
FIG. 5 is a second side view showing the transmission mechanism of the planting apparatus.
FIG. 6 is a sectional view taken along line S1-S1.
FIG. 7 is a sectional view taken along line S2-S2.
FIG. 8 is a sectional view taken along line S3-S3.
FIG. 9 is a side sectional view of the seedling attachment.
FIG. 10 is a first diagram illustrating a relationship between a state of a gear train and a state of a seedling plant.
FIG. 11 is a second diagram illustrating the relationship between the state of the gear train and the state of the seedling attachment.
FIG. 12 is a third diagram showing the relationship between the state of the gear train and the state of the seedling-planting implement.
FIG. 13 is a fourth diagram illustrating the relationship between the state of the gear train and the state of the seedling plant.
FIG. 14 is a fifth diagram illustrating the relationship between the state of the gear train and the state of the seedling attachment.
FIG. 15 is a view No. 6 showing the relationship between the state of the gear train and the state of the seedling plant.
FIG. 16 is a diagram showing a static locus of a seedling attachment.
FIG. 17 is a diagram showing a moving locus of a seedling attachment.
FIG. 18 is a perspective view showing a different bush mounting method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Riding rice transplanter 5 Running vehicle body 6 Elevating link device 7 Seedling planting part 14 Seedling planting device 20 Fixed support 21 Rotary case (rotary body)
21L, 21R Split body 24 Center of rotation 25 of rotating body Final shaft 26 Seedling attachment 30 Drive gear 35 Rotating gear 36 Intermediate gear 37 First counter gear 38 Second counter gear 39 Final gear 40 Fixed gear 180 Bush

Claims (8)

左右方向の回転中心線回りに回転する回転体に前記回転中心線に対し偏心した左右方向の最終軸を回転自在に設け、その最終軸における回転体から左右に突出する突出部に苗植付具を一体に取り付けるとともに、前記最終軸と一体回転する最終ギヤへ前記回転体に設けたギヤ列を介して伝動するようにしたことを特徴とする苗植付装置。A left-right final axis eccentric to the rotation center line is rotatably provided on a rotating body that rotates around the left-right rotation center line, and a seedling attachment is provided at a protruding portion of the final shaft that projects left and right from the rotating body. And a transmission unit for transmitting the gears to a final gear that rotates integrally with the final shaft via a gear train provided on the rotating body. ギヤ列は、回転体の回転中心線を中心とする円軌道を移動しながら回転する回転ギヤと、該回転ギヤと一体回転する中間ギヤと、該中間ギヤに噛合する第一カウンタギヤと、該第一カウンタギヤと一体回転し最終ギヤに噛合する第二カウンタギヤとからなり、第一カウンタギヤ、第二カウンタギヤ、最終ギヤ及び最終軸の組み合わせを2組設け、回転ギヤ及び中間ギヤの軸を、両組の第一カウンタギヤ及び第二カウンタギヤの軸から等距離で、かつ両組の第一カウンタギヤ及び第二カウンタギヤの軸同士を結ぶ直線からずれた配置した請求項1に記載の苗植付装置。The gear train includes a rotating gear that rotates while moving along a circular orbit about the rotation center line of the rotating body, an intermediate gear that rotates integrally with the rotating gear, a first counter gear that meshes with the intermediate gear, A first counter gear and a second counter gear that rotates integrally with the final gear and meshes with the final gear. Two sets of combinations of the first counter gear, the second counter gear, the final gear, and the final shaft are provided, and the shafts of the rotary gear and the intermediate gear are provided. 2 is arranged at an equal distance from the axes of both sets of the first counter gear and the second counter gear and displaced from a straight line connecting the axes of the two sets of the first counter gear and the second counter gear. Seedling planting equipment. 回転体停止時に、前後方向の関係に関して、両組の第一カウンタギヤ及び第二カウンタギヤの軸の間に回転ギヤ及び中間ギヤの軸が位置する請求項2に記載の苗植付装置。3. The seedling planting apparatus according to claim 2, wherein when the rotating body stops, the shafts of the rotating gear and the intermediate gear are located between the shafts of the first and second counter gears in the front-rear direction. 最終軸を駆動ギヤで支持する構成とした請求項1乃至3のいずれかに記載の苗植付装置。The seedling planting apparatus according to any one of claims 1 to 3, wherein the final shaft is supported by a drive gear. 回転体が左右の分割体に分割され、その左右の分割体で駆動ギヤを挟んで固定する構成とした請求項1乃至4のいずれかに記載の苗植付装置。The seedling planting apparatus according to any one of claims 1 to 4, wherein the rotating body is divided into left and right divided bodies, and the left and right divided bodies sandwich and fix a driving gear. 回転体が左右の分割体に分割され、その左右の分割体を最終軸の近傍に配した結合部材で結合する構成とした請求項1乃至5のいずれかに記載の苗植付装置。The seedling planting apparatus according to any one of claims 1 to 5, wherein the rotating body is divided into left and right divided bodies, and the left and right divided bodies are connected by a connecting member disposed near the final shaft. 回転体が左右の分割体に分割され、その回転体の回転中心線に対して一方側に左右の分割体と駆動ギヤとを共に結合する結合部材を設け、他方側に左右の分割体とを結合する結合部材を兼ねる回転ギヤ及び中間ギヤの軸を設けた請求項2乃至6のいずれかに記載の苗植付装置。The rotating body is divided into left and right divided bodies, and a coupling member that couples the left and right divided bodies and the drive gear together on one side with respect to the rotation center line of the rotating body, and the left and right divided bodies on the other side. The seedling planting device according to any one of claims 2 to 6, further comprising a shaft of a rotating gear and an intermediate gear that also serves as a connecting member to be connected. 回転体が左右の分割体に分割され、一方の分割体に駆動ギヤ、第一カウンタギヤ及び第二カウンタギヤを取り付けた請求項2乃至6のいずれかに記載の苗植付装置。The seedling planting apparatus according to any one of claims 2 to 6, wherein the rotating body is divided into left and right divided bodies, and a drive gear, a first counter gear, and a second counter gear are attached to one of the divided bodies.
JP2003058152A 2003-01-31 2003-03-05 Seedling planting equipment Expired - Fee Related JP4277538B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003058152A JP4277538B2 (en) 2003-03-05 2003-03-05 Seedling planting equipment
KR1020040005960A KR100694651B1 (en) 2003-01-31 2004-01-30 Transplanting device
CNB200410003752XA CN1295952C (en) 2003-01-31 2004-01-30 Transplanting appts.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003058152A JP4277538B2 (en) 2003-03-05 2003-03-05 Seedling planting equipment

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JP2004267014A true JP2004267014A (en) 2004-09-30
JP2004267014A5 JP2004267014A5 (en) 2008-12-18
JP4277538B2 JP4277538B2 (en) 2009-06-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101561029B (en) * 2009-05-25 2011-03-16 浙江理工大学 Eccentric modified gear transmission mechanism
CN101347068B (en) * 2007-07-19 2014-07-09 井关农机株式会社 Seedling planting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101347068B (en) * 2007-07-19 2014-07-09 井关农机株式会社 Seedling planting machine
CN101561029B (en) * 2009-05-25 2011-03-16 浙江理工大学 Eccentric modified gear transmission mechanism

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