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JP3701764B2 - Rice transplanter - Google Patents
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JP3701764B2 - Rice transplanter - Google Patents

Rice transplanter Download PDF

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Publication number
JP3701764B2
JP3701764B2 JP03980497A JP3980497A JP3701764B2 JP 3701764 B2 JP3701764 B2 JP 3701764B2 JP 03980497 A JP03980497 A JP 03980497A JP 3980497 A JP3980497 A JP 3980497A JP 3701764 B2 JP3701764 B2 JP 3701764B2
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planting
planting part
link
hitch
rice transplanter
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JP03980497A
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JPH10215626A (en
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井 邦 夫 土
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Yanmar Agricultural Equipment Co Ltd
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Yanmar Agricultural Equipment Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は例えば苗載台及び植付爪を備えて連続的に苗植作業を行う田植機に関する。
【0002】
【発明が解決しようとする課題】
従来、トップリンク及びロワーリンクを介して走行車に植付部を昇降自在に装設させると共に、ローリング自在に取付ける植付部の左右傾斜を調節するローリング部材を設ける田植機において、植付部の下降動作を制限するストッパを設けていない場合、苗載台の苗積載量などによって植付部の下げ高さが異なり易い不具合があると共に、植付部の下降動作を制限するストッパを機体左右幅方向略中央に設けることにより、植付部が左右に傾斜したとき、走行車後部の後輪などに植付部傾斜下端側が異常に接近する不具合があり、走行車に対して植付部を離反させて配置させる必要があり、植付部取付け前後長さの短縮を容易に行い得ず、植付部の左右側の走行抵抗の差によって植付部が垂直軸回りに回転する尻振り現象が起き易く、また圃場枕地での旋回半径の縮少による枕地の行程(後処理植付け幅)の低減を容易に図り得ない等の問題がある。また、トップリンクの長さを縮少して植付部を前傾支持させることにより、下降させることによって植付部両側が走行車の後輪に異常接近し易く、植付部の前傾調節が制限される不具合がある。さらに、植付部の上昇を制限するストッパを設けていないから、苗載台の苗積載量などによって植付部の上げ高さが異なり易い不具合があると共に、最上げ位置の植付部が走行車に異常接近するのを防ぐことにより、植付部の十分な揚程量を確保し得ず、畦越えなどのとき、植付部の上昇不足によってフロートが畦に接触し易い等の不具合がある。
【0003】
【課題を解決するための手段】
然るに、本発明は、トップリンク及びロワーリンクを介して走行車に植付部を昇降自在に装設させると共に、ローリング自在に取付ける植付部の左右傾斜を調節するローリング部材を設ける田植機において、ロワーリンクに植付部を連結させるヒッチの両側を側方に突出させ、ヒッチの両側突出部にロワーリンクを当接させて植付部下降動作を制限するように構成したもので、苗載量などによって植付部の最下げ高さが異なる不具合をなくし得ると共に、植付部がローリング時に傾斜下端側のヒッチ突出部とロワーリンクの当接によって最下げ高さが決定され、植付部のローリングなどによって走行車と植付部が異常接近して干渉するのを防止し得、走行車に対して植付部を従来よりも接近させて配置し得、植付部取付け前後長さの短縮により植付部の尻振り現象の防止並びに枕地の行程(枕地苗植作業幅)の低減などを容易に行い得、走行車及び植付部の前後長さ縮少によって走行車の走行性能の向上並びに取扱い操作性の向上などを容易に図り得るものである。
【0004】
また、ヒッチの両側にステーを突設させると共に、ロワーリンクの両横に下降ストッパを張出し固定させ、該下降ストッパと前記ステーの当接によって植付部を最下げ高さ位置に支持させるように構成したもので、前記ステーをヒッチの補強部材として兼用し得ると共に、ロワーリンク及びヒッチ構造の簡略化並びにステー及びストッパの最下げ高さの設定などを容易に行い得るものである。
【0005】
また、伸縮自在なトップリンクの長さを変更するピッチング部材を設け、植付部の前後傾斜を調節するように構成したもので、圃場の深浅などに応じて植付部作業姿勢を適正に得られると共に、トップリンク長さの縮少により植付部が前傾しても、ステーとストッパの当接により植付部の最下げ高さが標準よりも高くなり、走行車と植付部の間隔を維持して干渉を防止し得、植付部のピッチング制御機能の向上並びに取扱い操作性の向上などを従来よりも容易に図り得るものである。
【0006】
また、走行車に連結させるトップリンク基端部下面側にロワーリンク上面側を当接させる上昇ストッパを設け、植付部上昇動作を上昇ストッパによって制限するように構成したもので、苗載量または植付部の前後傾斜調節などの影響を受けることなく、略一定した最上げ高さに植付部を上昇支持し得ると共に、走行車との異常接近を防いで植付部の十分な揚程量を容易に確保し得、畦越えなどにおいて、植付部の上昇不足によりフロートなどが畦に接触する等の不具合をなくし得、植付部を上昇支持した状態での移動操作性の向上などを容易に図り得るものである。
【0007】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図1は植付部昇降リンク機構の側面図、図2は乗用田植機の側面図、図3は同平面図を示し、図中(1)は作業者が搭乗する走行車であり、エンジン(2)を車体フレーム(3)前部上方に搭載させ、ギヤ変速ケース(4)前方にフロントアクスルケース(5)を介して水田走行用前走行輪(6)を支持させると共に、前記ギヤ変速ケース(4)の後部にリヤアクスルケース(7)を連設し、前記リヤアクスルケース(7)に水田走行用後走行輪(8)を支持させる。そして前記エンジン(2)等を覆うボンネット(9)両側に予備苗載台(10)を取付けると共に、ステップ(11)を介して作業者が搭乗する車体カバー(12)によって前記ギヤ変速ケース(4)等を覆い、前記車体カバー(12)上部に運転席(13)を取付け、その運転席(13)の前方で前記ボンネット(9)後部に操向ハンドル(14)を設ける。
【0008】
また、図中(15)は8条植え用の苗載台(16)並びに8条分の植付爪(17)などを具備する8条植付部であり、前高後低の合成樹脂製の前傾式苗載台(16)を下部レール(18)及びガイドレール(19)を介して植付ケース(20)に左右往復摺動自在に支持させると共に、一方向に等速回転させるロータリケース(21)を前記植付ケース(20)に支持させ、該ケース(21)の回転軸芯を中心に対称位置に一対の爪ケース(22)(22)を配設し、その爪ケース(22)(22)先端に植付爪(17)(17)を取付ける。また前記植付ケース(20)の前側にローリング支点軸(23)を介して支持フレーム(24)を設け、トップリンク(25)及びロワーリンク(26)を含むリンク機構(27)のクィックヒッチ(24a)を介して走行車(1)後側に支持フレーム(24)を連結させ、前記リンク機構(27)を介して植付部(15)を昇降させる油圧昇降シリンダ(28)をロワーリンク(26)に連結させ、前記前後走行輪(6)(8)を走行駆動して移動すると同時に、左右に往復摺動させる苗載台(16)から一株分の苗を植付爪(17)によって取出し、連続的に苗植え作業を行うように構成する。
【0009】
また、図中(29)は主変速レバー、(30)は植付昇降兼作業走行変速用副変速レバー、(31)は植付け感度調節レバー、(32)は主クラッチペダル、(33)(33)は左右ブレーキペダル、(34)は2条分均平用センターフロート、(35)は2条分均平用サイドフロート、(36)は6条用の側条施肥機である。
【0010】
さらに、図4、図5に示す如く、左右一対の四角筒形の前記車体フレーム(3)(3)前部にエンジン(2)を搭載し、前車軸(37)(37)を介して左右前走行輪(6)(6)を軸支させるフロントアクスルケース(5)をエンジン(2)後方の車体フレーム(3)(3)下面に取付け、フロントアクスルケース(5)後方の左右車体フレーム(3)(3)間に無段ベルト変速ケース(38)を設け、無段変速ケース(38)後方の左右車体フレーム(3)(3)間にギヤ変速ケース(4)を設けると共に、後車軸(39)(39)を介して左右後走行輪(8)(8)を軸支させるリヤアクスルケース(7)を左右車体フレーム(3)(3)後端下面に固設させ、エンジン(2)出力を各変速ケース(38)(4)を介して各アクスルケース(5)(7)に走行駆動力として伝達させ、前後走行輪(6)(8)を駆動するように構成している。
【0011】
また、左右車体フレーム(3)(3)後端部上面に左右支柱(40)(40)を立設させ、左右支柱(40)(40)上端を水平フレーム(41)によって連結させ、支柱(40)と水平フレーム(41)を一体固定させて正面視門形に形成する。そして、車体フレーム(3)中間のブレーキペダル受軸(42)と、前記水平フレーム(41)中間の間に、前低後高に傾斜させるサブフレーム(43)(43)を架設させると共に、サブフレーム(43)(43)間に昇降シリンダ(28)を取付け、またトップリンク(25)及びロワーリンク(26)で形成するリンク機構(27)を各フレーム(3)(41)に支軸(44)(45)を介して取付け、昇降シリンダ(28)によってリンク機構(27)を揺動させて植付部(15)を昇降させるように構成している。
【0012】
さらに、図6、図7に示す如く、前記支持フレーム(24)にステー(46)を一体固定させ、該ステー(46)に支軸(47)を介して油圧ローリングシリンダ(48)中間を回転自在に取付けると共に、左右の植付ケース(20)(20)に下端を固定させる左右苗台支柱(49)(49)を立設させ、ガイドレール(19)に摺動自在に係入させる摺動子(50)(50)を前記支柱(49)(49)上端に取付け、また左右支柱(49)(49)を連杆(51)によって連結させ、ローリングシリンダ(48)のピストン(52)両側を連杆(51)にブラケット(53)(53)を介して連結させ、図7のように、前記ローリングシリンダ(48)制御によってローリング支点軸(23)を中心に植付部(15)を左右に傾動させるように構成している。
【0013】
また、植付ケース(20)に設けて植付部(15)の左右傾斜を検出する振子型傾斜センサ(54)を備え、前記傾斜センサ(54)の検出結果に基づき、ローリングシリンダ(48)を作動させて植付部(15)の左右傾斜を修正するもので、左右の後走行輪(8)(8)が転動する圃場耕盤の凹凸によって走行車(1)が左右に傾動したとき、植付部(15)の左右傾斜角度を傾斜センサ(57)によって検出させ、植付部(15)の水平制御を自動的に行わせるように構成している。
【0014】
さらに、図1、図8、図9に示す如く、前記ロワーリンク(26)前端部の本機支持部に基板(55)を立設させ、基板(55)上端とロワーリンク(26)間にリンクフレーム(56)を側面視三角形に連結させ、前記三角形頂角の基板(55)とリンクフレーム(56)連結部にピン(57)を介して昇降シリンダ(28)のピストンロッド(28a)を連結させると共に、ロワーリンク(26)後端部の二叉部の間に前記ヒッチ(24a)を挾んで下ヒッチピン(58)によって連結させる。また、前記トップリンク(25)を構成する前後ロッド(59)(60)を伸縮させる電動ピッチングモータ(61)を設け、該モータ(61)によってトップリンク(25)長さを変更し、前ロッド(59)前端の支軸(44)と該ロッド(60)後端の上ヒッチピン(62)の間隔を変化させ、下ヒッチピン(62)回りにクィックヒッチ(24a)を前後方向に回転させ、クィックヒッチ(24a)に係脱自在なクィックヒッチピン(63)(64)を介して連結させる支持フレーム(24)及び植付部(15)を前後に傾斜させ、植付部(15)の前後傾斜角調節によってフロート(34)(35)の接地姿勢を修正するように構成している。
【0015】
さらに、前記クィックヒッチ(24a)にパイプ形ステー(65)を貫通させ、前記ヒッチ(24a)側面に補強金具(66)を介してステー(65)を固定させ、前記ヒッチ(24a)両側にステー(65)両端を突設させると共に、前記ロワーリンク(26)後端側二叉部上面に鈑金製下降ストッパ(67)を一体固定させ、クィックヒッチ(24a)の両側で左右二組のステー(65)及び下降ストッパ(67)を当接させ、ロワーリンク(26)の下降動作を禁止し、植付部(15)を最下げ高さ位置に支持するもので、苗載台(16)の苗載量の増減などによって植付部(15)の最下げ高さが変化する不具合をなくしていると共に、ピッチングモータ(61)を操作して植付部(15)を前傾させたとき、また植付部(15)が走行車(1)に対して左右に傾斜したとき、両方または左右いずれか一方のステー(65)の前方移動により、植付部(15)の最下げ高さが高くなるように構成している。
【0016】
上記から明らかなように、トップリンク(25)及びロワーリンク(26)を介して走行車(1)に植付部(15)を昇降自在に装設させると共に、ローリング自在に取付ける植付部(15)の左右傾斜を調節するローリング部材であるローリングシリンダ(48)を設ける田植機において、ロワーリンク(26)に植付部(15)を連結させるヒッチ(24a)の両側を側方に突出させ、ヒッチ(24a)の両側突出部であるステー(65)にロワーリンク(26)を当接させて植付部(15)下降動作を制限するもので、苗載量などによって植付部(15)の最下げ高さが異なる不具合をなくすると共に、植付部(15)がローリング時に傾斜下端側のヒッチ(24a)突出部(65)とロワーリンク(26)の当接によって最下げ高さが決定され、植付部(15)のローリングなどによって走行車(1)と植付部(15)が異常接近して干渉するのを防止し、走行車(1)に対して植付部(15)を従来よりも接近させて配置させ、植付部(15)取付け前後長さの短縮により植付部(15)の尻振り現象の防止並びに枕地の行程(枕地苗植作業幅)の低減などを行え、走行車(1)及び植付部(15)の前後長さ縮少によって走行車(1)の走行性能の向上並びに取扱い操作性の向上などを図れるように構成している。
【0017】
また、ヒッチ(24a)の両側にステー(65)を突設させると共に、ロワーリンク(26)の両横に下降ストッパ(67)を張出し固定させ、該下降ストッパ(67)と前記ステー(65)の当接によって植付部(15)を最下げ高さ位置に支持させるもので、前記ステー(65)をヒッチ(24a)の補強部材として兼用させると共に、ロワーリンク(26)及びヒッチ(24a)構造の簡略化並びにステー(65)及びストッパ(67)の最下げ高さの設定などを行えると共に、伸縮自在なトップリンク(25)の長さを変更するピッチング部材であるピッチングモータ(61)を設け、植付部(15)の前後傾斜を調節するもので、圃場の深浅などに応じて植付部(15)作業姿勢を適正に得られると共に、トップリンク(25)長さの縮少により植付部(15)が前傾しても、ステー(65)とストッパ(67)の当接により植付部(15)の最下げ高さが標準よりも高くなり、走行車(1)と植付部(15)の間隔を維持して干渉を防止し、植付部(15)のピッチング制御機能の向上並びに取扱い操作性の向上などを従来よりも容易に図れるように構成している。
【0018】
さらに、図8、図9に示す如く、前記トップリンク(25)基端部である前ロッド(59)前端部に鈑金製上昇ストッパ(68)を一体固定させると共に、昇降シリンダ(28)操作によって植付部(15)を最上げ位置に上昇させたとき、トップリンク(25)とロワーリンク(26)の上昇動作により各リンク(25)(26)間隔が縮少し、受フレーム(69)によって補強されたリンクフレーム(56)上面に上昇ストッパ(68)下面が当接し、植付部(15)の上昇を禁止するもので、走行車(1)に連結させるトップリンク(25)基端部下面側にロワーリンク(26)上面側を当接させる上昇ストッパ(68)を設け、植付部(15)上昇動作を上昇ストッパ(68)によって制限し、苗載量または植付部(15)の前後傾斜調節などの影響を受けることなく、略一定した最上げ高さに植付部(15)を上昇支持させると共に、走行車(1)との異常接近を防いで植付部(15)の十分な揚程量を確保し、畦越えなどにおいて、植付部(15)の上昇不足によりフロート(34)(35)などが畦に接触する等の不具合をなくし、植付部(15)を上昇支持した状態での移動操作性の向上などを図れるように構成している。
【0019】
【発明の効果】
以上実施例から明らかなように本発明は、トップリンク(25)及びロワーリンク(26)を介して走行車(1)に植付部(15)を昇降自在に装設させると共に、ローリング自在に取付ける植付部(15)の左右傾斜を調節するローリング部材(48)を設ける田植機において、ロワーリンク(26)に植付部(15)を連結させるヒッチ(24a)の両側を側方に突出させ、ヒッチ(24a)の両側突出部(65)にロワーリンク(26)を当接させて植付部(15)下降動作を制限するように構成したもので、苗載量などによって植付部(15)の最下げ高さが異なる不具合をなくすことができると共に、植付部(15)がローリング時に傾斜下端側のヒッチ(24a)突出部(65)とロワーリンク(26)の当接によって最下げ高さが決定され、植付部(15)のローリングなどによって走行車(1)と植付部(15)が異常接近して干渉するのを防止でき、走行車(1)に対して植付部(15)を従来よりも接近させて配置でき、植付部(15)取付け前後長さの短縮により植付部(15)の尻振り現象の防止並びに枕地の行程(枕地苗植作業幅)の低減などを容易に行うことができ、走行車(1)及び植付部(15)の前後長さ縮少によって走行車(1)の走行性能の向上並びに取扱い操作性の向上などを容易に図ることができるものである。
【0020】
また、ヒッチ(24a)の両側にステー(65)を突設させると共に、ロワーリンク(26)の両横に下降ストッパ(67)を張出し固定させ、該下降ストッパ(67)と前記ステー(65)の当接によって植付部(15)を最下げ高さ位置に支持させるように構成したもので、前記ステー(65)をヒッチ(24a)の補強部材として兼用できると共に、ロワーリンク(26)及びヒッチ(24a)構造の簡略化並びにステー(65)及びストッパ(67)の最下げ高さの設定などを容易に行うことができるものである。
【0021】
また、伸縮自在なトップリンク(25)の長さを変更するピッチング部材(61)を設け、植付部(15)の前後傾斜を調節するように構成したもので、圃場の深浅などに応じて植付部(15)作業姿勢を適正に得ることができると共に、トップリンク(25)長さの縮少により植付部(15)が前傾しても、ステー(65)とストッパ(67)の当接により植付部(15)の最下げ高さが標準よりも高くなり、走行車(1)と植付部(15)の間隔を維持して干渉を防止でき、植付部(15)のピッチング制御機能の向上並びに取扱い操作性の向上などを従来よりも容易に図ることができるものである。
【0022】
また、走行車(1)に連結させるトップリンク(25)基端部下面側にロワーリンク(26)上面側を当接させる上昇ストッパ(68)を設け、植付部(15)上昇動作を上昇ストッパ(68)によって制限するように構成したもので、苗載量または植付部(15)の前後傾斜調節などの影響を受けることなく、略一定した最上げ高さに植付部(15)を上昇支持できると共に、走行車(1)との異常接近を防いで植付部(15)の十分な揚程量を容易に確保でき、畦越えなどにおいて、植付部(15)の上昇不足によりフロート(34)(35)などが畦に接触する等の不具合をなくすことができ、植付部(15)を上昇支持した状態での移動操作性の向上などを容易に図ることができるものである。
【図面の簡単な説明】
【図1】植付部昇降リンク機構の側面図。
【図2】全体の側面図。
【図3】同平面図。
【図4】走行車の側面図。
【図5】同平面図。
【図6】植付部の側面図。
【図7】同正面図。
【図8】図1の作動説明図。
【図9】同説明図。
【符号の説明】
(1) 走行車
(15) 植付部
(24a)クィックヒッチ
(25) トップリンク
(26) ロワーリンク
(48) ローリングシリンダ(ローリング部材)
(61) ピッチングモータ(ピッチング部材)
(65) ステー(突出部)
(67) 下降ストッパ
(68) 上昇ストッパ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to, for example, a rice transplanter that includes a seedling stage and a planting claw and performs seedling planting work continuously.
[0002]
[Problems to be solved by the invention]
Conventionally, in a rice transplanter in which a planting part is installed on a traveling vehicle via a top link and a lower link so that the planting part can be moved up and down, and a rolling member that adjusts the right and left inclination of the planting part that is mounted so as to be able to roll freely is provided. If there is no stopper to limit the descending operation, the planting part's lowering height tends to vary depending on the seedling loading amount of the seedling stand, etc. When the planting part is tilted to the left and right by providing it in the approximate center of the direction, there is a problem that the planting part tilting lower end side abnormally approaches the rear wheel etc. of the rear part of the traveling vehicle, and the planting part is separated from the traveling vehicle. It is not possible to easily shorten the length before and after installing the planting part, and there is a phenomenon that the planting part rotates around the vertical axis due to the difference in running resistance on the left and right sides of the planting part. Easy to get up and farm And the like which can not aim to facilitate the reduction of the stroke of the headland by low shrinkage of the turning radius at headland (postprocessing planting width) in question. Also, by reducing the length of the top link and supporting the planting part forward, the planting part both sides are likely to abnormally approach the rear wheel of the traveling vehicle by lowering, and the forward tilt adjustment of the planting part is possible. There is a limited bug. In addition, since there is no stopper to limit the ascent of the planting part, there is a problem that the height of the planting part tends to vary depending on the seedling load of the seedling stand, etc., and the planting part at the highest position runs By preventing abnormal approach to the car, it is not possible to secure a sufficient lifting amount of the planting part, and there is a problem that the float tends to come into contact with the kite due to insufficient rise of the planting part, etc. .
[0003]
[Means for Solving the Problems]
However, the present invention provides a rice transplanter in which a traveling vehicle is mounted on a traveling vehicle via a top link and a lower link so that the planting portion can be moved up and down, and a rolling member that adjusts the right and left inclination of the planting portion that is mounted so as to be able to roll freely is provided. The hitch that connects the planting part to the lower link protrudes from both sides, and the lower link is brought into contact with the projecting part on both sides of the hitch to limit the planting part descending operation. The lowering height of the planting part may be eliminated depending on the planting part, and when the planting part is rolling, the lowest height is determined by the abutment of the hitch protrusion on the lower end of the slope and the lower link. It can prevent the traveling vehicle and planting part from interfering with each other due to rolling etc., and the planting part can be placed closer to the traveling vehicle than before, shortening the length before and after installing the planting part By It can easily prevent the tailing phenomenon of the planting part and reduce the headland travel (headland seedling planting work width), etc., and the traveling performance of the traveling vehicle can be reduced by reducing the front and rear length of the traveling vehicle and the planting part. The improvement and the improvement of handling operability can be easily achieved.
[0004]
In addition, the stays are projected on both sides of the hitch, and the lowering stopper is extended and fixed on both sides of the lower link so that the planting portion is supported at the lowest position by the contact between the lowering stopper and the stay. In this configuration, the stay can be used as a hitch reinforcing member, the lower link and hitch structure can be simplified, and the minimum height of the stay and stopper can be easily set.
[0005]
In addition, a pitching member that changes the length of the telescopic top link is provided to adjust the front / rear inclination of the planting part, so that the planting part working posture can be appropriately obtained according to the depth of the field. In addition, even if the planting part tilts forward due to the shortening of the top link length, the lowest height of the planting part becomes higher than the standard by the contact of the stay and the stopper, and the traveling vehicle and the planting part It is possible to prevent the interference by maintaining the interval, and to improve the pitching control function of the planting part and the handling operability more easily than in the past.
[0006]
In addition, a rising stopper that abuts the upper surface side of the lower link is provided on the lower surface side of the top link base end portion to be connected to the traveling vehicle, and the planting portion ascending operation is limited by the rising stopper. The planting part can be lifted and supported at a substantially constant maximum height without being affected by the front and rear tilt adjustment of the planting part, and the lifting height of the planting part is sufficient to prevent abnormal approach to the traveling vehicle. Can be easily secured, and when the planting part is over, etc., it is possible to eliminate problems such as floats coming into contact with the kite due to insufficient rise of the planting part. It can be easily planned.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a planting part raising / lowering link mechanism, FIG. 2 is a side view of a riding rice transplanter, FIG. 3 is a plan view thereof, (1) is a traveling vehicle on which an operator is boarded, and an engine ( 2) is mounted above the front of the vehicle body frame (3), the front shifting wheel (6) for paddy field traveling is supported via the front axle case (5) in front of the gear shifting case (4), and the gear shifting case (4) A rear axle case (7) is connected to the rear of the rear axle, and the rear axle case (7) supports the rear traveling wheels (8) for paddy field traveling. The spare seedling stage (10) is attached to both sides of the bonnet (9) that covers the engine (2) and the like, and the gear shift case (4) is mounted by a vehicle body cover (12) on which an operator rides through step (11). ) And the like, and a driver's seat (13) is attached to the upper part of the vehicle body cover (12), and a steering handle (14) is provided at the rear of the bonnet (9) in front of the driver's seat (13).
[0008]
Further, in the figure, (15) is an 8-row planting portion having a seedling stand (16) for 8-row planting and a planting claw (17) for eight strips, which is made of a synthetic resin with high front and rear and low The forward tilting type seedling platform (16) is supported by the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable in the left and right directions and is rotated at a constant speed in one direction. The case (21) is supported by the planting case (20), and a pair of claw cases (22) and (22) are arranged at symmetrical positions around the rotation axis of the case (21). 22) (22) Attach the planting claws (17) and (17) to the tip. Further, a support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a quick hitch (27) of a link mechanism (27) including a top link (25) and a lower link (26) ( 24a) connects the support frame (24) to the rear side of the traveling vehicle (1), and lowers the hydraulic lifting cylinder (28) for raising and lowering the planting part (15) via the link mechanism (27). 26), and the front and rear traveling wheels (6) and (8) are driven to move, and at the same time, a seedling for a single plant is planted from a seedling stand (16) that reciprocally slides left and right. And is configured to continuously perform seedling planting work.
[0009]
In the figure, (29) is the main transmission lever, (30) is the planting lifting / working transmission subtransmission lever, (31) is the planting sensitivity adjustment lever, (32) is the main clutch pedal, and (33) (33). ) Is a left and right brake pedal, (34) is a center float for leveling two strips, (35) is a side float for leveling two strips, and (36) is a side fertilizer for six strips.
[0010]
Further, as shown in FIGS. 4 and 5, an engine (2) is mounted on the front part of the pair of left and right square cylindrical body frames (3) and (3), and left and right via the front axles (37) and (37). A front axle case (5) for pivotally supporting the front traveling wheels (6) (6) is attached to the lower surface of the body frame (3) (3) behind the engine (2), and the left and right body frames (5) behind the front axle case (5) 3) A continuously variable belt transmission case (38) is provided between (3), a gear transmission case (4) is provided between the left and right vehicle body frames (3) and (3) behind the continuously variable transmission case (38), and the rear axle. (39) A rear axle case (7) for pivotally supporting the left and right rear traveling wheels (8) and (8) is fixed to the lower surfaces of the rear ends of the left and right body frames (3) and (3) through the engine (2). The output is supplied to each axle case via each shift case (38) (4). Scan (5) (7) is transmitted as driving force, and configured to drive the front and rear running wheel (6) (8).
[0011]
Also, left and right columns (40) and (40) are erected on the upper surfaces of the rear end portions of the left and right body frames (3) and (3), and the upper ends of the left and right columns (40) and (40) are connected by the horizontal frame (41). 40) and the horizontal frame (41) are integrally fixed to form a frontal portal shape. And, a sub-frame (43) (43) inclined to the front low and rear high is installed between the brake pedal bearing shaft (42) in the middle of the vehicle body frame (3) and the middle of the horizontal frame (41). A lifting cylinder (28) is attached between the frames (43) and (43), and a link mechanism (27) formed by a top link (25) and a lower link (26) is attached to each frame (3) and (41) as a support shaft ( 44) and 45), and the planting part (15) is moved up and down by swinging the link mechanism (27) by the lifting cylinder (28).
[0012]
Further, as shown in FIGS. 6 and 7, a stay (46) is integrally fixed to the support frame (24), and the middle of the hydraulic rolling cylinder (48) is rotated to the stay (46) via a support shaft (47). The left and right seedling support columns (49) and (49) that are installed freely and that fix the lower ends of the left and right planting cases (20) and (20) are erected and slidably engaged with the guide rail (19). The moving element (50) (50) is attached to the upper end of the column (49) (49), and the left and right columns (49) (49) are connected by the linkage (51), and the piston (52) of the rolling cylinder (48) is connected. Both sides are connected to the linkage (51) via brackets (53) (53), and as shown in FIG. 7, the planting portion (15) is centered on the rolling fulcrum shaft (23) by the rolling cylinder (48) control. Tilt left or right It is configured so as.
[0013]
Moreover, the pendulum type inclination sensor (54) provided in the planting case (20) and detecting the right and left inclination of the planting part (15) is provided, and the rolling cylinder (48) is based on the detection result of the inclination sensor (54). The left and right rear traveling wheels (8) and (8) are tilted to the left and right by the unevenness of the field cultivator on which the left and right rear traveling wheels (8) roll. The horizontal inclination angle of the planting part (15) is detected by the inclination sensor (57), and the horizontal control of the planting part (15) is automatically performed.
[0014]
Further, as shown in FIGS. 1, 8, and 9, a substrate (55) is erected on the machine support portion at the front end of the lower link (26), and the upper end of the substrate (55) and the lower link (26) are disposed. The link frame (56) is connected to the triangle in a side view, and the piston rod (28a) of the elevating cylinder (28) is connected to the triangular apex substrate (55) and the link frame (56) connecting portion via a pin (57). At the same time, the hitch (24a) is sandwiched between the two forks at the rear end of the lower link (26) and is connected by the lower hitch pin (58). Further, an electric pitching motor (61) for extending and retracting the front and rear rods (59) and (60) constituting the top link (25) is provided, and the length of the top link (25) is changed by the motor (61), so that the front rod (59) The distance between the support shaft (44) at the front end and the upper hitch pin (62) at the rear end of the rod (60) is changed, and the quick hitch (24a) is rotated in the front-rear direction around the lower hitch pin (62). The support frame (24) and the planting part (15) to be connected to the hitch (24a) via the quick hitch pins (63) and (64) that are freely detachable are tilted forward and backward, and the forward and backward tilt angles of the planting part (15). The ground contact posture of the floats (34) and (35) is corrected by adjustment.
[0015]
Further, a pipe-shaped stay (65) is passed through the quick hitch (24a), a stay (65) is fixed to the side of the hitch (24a) via a reinforcing metal fitting (66), and stays are provided on both sides of the hitch (24a). (65) Both ends protrude, and a lowering stopper (67) made of a metal plate is integrally fixed to the upper surface of the lower end of the lower link (26), and two sets of stays on both sides of the quick hitch (24a) ( 65) and the lowering stopper (67) are brought into contact with each other, the lowering link (26) is prohibited from lowering, and the planting part (15) is supported at the lowest position. When the planting part (15) has been eliminated by changing the minimum height of the planting part (15) and the planting part (15) is tilted forward by operating the pitching motor (61). The planting part (15) When tilted to the left and right with respect to the row vehicle (1), the forward movement of both or one of the left and right stays (65), is configured so as outermost lowered height of the planting unit (15) is increased.
[0016]
As is apparent from the above, the planting part (15) is mounted on the traveling vehicle (1) via the top link (25) and the lower link (26) so as to be movable up and down, and is installed so as to be able to roll freely ( 15) In a rice transplanter provided with a rolling cylinder (48) which is a rolling member for adjusting the right and left inclination of 15), both sides of the hitch (24a) for connecting the planting part (15) to the lower link (26) are protruded laterally. The lower link (26) is brought into contact with the stay (65), which is a projecting portion on both sides of the hitch (24a), to limit the descending operation of the planting unit (15). The planting unit (15 ) And the planting portion (15) is at the lowest height when the hitch (24a) projecting portion (65) on the inclined lower end side and the lower link (26) are in contact with each other when rolling. The traveling vehicle (1) and the planting unit (15) are prevented from abnormally approaching and interfering with each other by rolling of the planting unit (15) and the planting unit (15 ) Are placed closer than before and the planting part (15) is shortened before and after the installation to prevent the planting part (15) from swinging and the headland travel (headland seedling planting width). The traveling vehicle (1) and the planting part (15) can be reduced in length, and the traveling performance of the traveling vehicle (1) and the handling operability can be improved.
[0017]
Further, stays (65) are protruded on both sides of the hitch (24a), and lowering stoppers (67) are extended and fixed on both sides of the lower link (26), so that the lowering stoppers (67) and the stays (65) are fixed. The planting portion (15) is supported at the lowest height position by abutment of the stay, and the stay (65) is also used as a reinforcing member for the hitch (24a), and the lower link (26) and the hitch (24a). A pitching motor (61), which is a pitching member that can simplify the structure, set the minimum height of the stay (65) and the stopper (67), and change the length of the extendable top link (25). The planting part (15) adjusts the front / rear inclination of the planting part (15) so that the working position of the planting part (15) can be appropriately obtained according to the depth of the field and the length of the top link (25) Even if the planting part (15) tilts forward due to the contraction of the vehicle, the lowering height of the planting part (15) becomes higher than the standard by the contact of the stay (65) and the stopper (67), and the traveling vehicle (1) Maintaining the distance between the planting part (15) to prevent interference and improving the pitching control function and the handling operability of the planting part (15) more easily than before. are doing.
[0018]
Further, as shown in FIGS. 8 and 9, a metal plate raising stopper (68) is integrally fixed to the front end portion of the front rod (59) which is the base end portion of the top link (25), and the lifting cylinder (28) is operated. When the planting portion (15) is raised to the highest position, the distance between the links (25) and (26) is reduced by the upward movement of the top link (25) and the lower link (26). The top surface of the top link (25) to be connected to the traveling vehicle (1), in which the bottom surface of the rising stopper (68) abuts on the top surface of the reinforced link frame (56) and prohibits the planting portion (15) from rising. A lower stopper (68) for contacting the upper surface side of the lower link (26) is provided on the lower surface side, and the ascending operation of the planting part (15) is restricted by the ascending stopper (68). Forward and backward tilt The planting part (15) is lifted and supported at a substantially constant maximum height without being affected by adjustment or the like, and the planting part (15) is sufficiently prevented by preventing abnormal approach to the traveling vehicle (1). The lifting amount was secured, and the planting part (15) was lifted and supported by eliminating problems such as the floats (34) and (35) coming into contact with the kite due to insufficient rise of the planting part (15) when passing over the fence. It is configured to improve the movement operability in the state.
[0019]
【The invention's effect】
As is clear from the above embodiments, the present invention allows the traveling portion (15) to be mounted on the traveling vehicle (1) via the top link (25) and the lower link (26) so that the planting portion (15) can be lifted and lowered. In a rice transplanter provided with a rolling member (48) for adjusting the right and left inclination of the planting part (15) to be attached, both sides of the hitch (24a) for connecting the planting part (15) to the lower link (26) protrude sideways. The lower link (26) is brought into contact with the projecting portions (65) on both sides of the hitch (24a) so as to limit the descending operation of the planting portion (15). (15) It is possible to eliminate the inconvenience of the lowest lowered height, and when the planting part (15) rolls, the hitch (24a) projecting part (65) on the inclined lower end side and the lower link (26) contact each other. Lowest The traveling vehicle (1) and the planting portion (15) can be prevented from abnormally approaching and interfering with each other by rolling the planting portion (15), and the planting portion ( 15) can be placed closer than before, and the planting part (15) is prevented from swinging by the shortened length before and after installation and the heading process (headland seedling planting work width) is prevented. Can be easily reduced, and the traveling performance of the traveling vehicle (1) and the handling operability can be easily improved by reducing the longitudinal length of the traveling vehicle (1) and the planting part (15). It can be planned.
[0020]
Further, stays (65) are protruded on both sides of the hitch (24a), and lowering stoppers (67) are extended and fixed on both sides of the lower link (26), so that the lowering stoppers (67) and the stays (65) are fixed. So that the planting portion (15) is supported at the lowest height position, and the stay (65) can be used as a reinforcing member for the hitch (24a), and the lower link (26) and The hitch (24a) structure can be simplified and the minimum height of the stay (65) and the stopper (67) can be easily set.
[0021]
Also, a pitching member (61) for changing the length of the telescopic top link (25) is provided, and the planting part (15) is configured to adjust the front / rear inclination, depending on the depth of the farm field, etc. The planting part (15) can obtain a working posture appropriately, and the stay (65) and the stopper (67) even if the planting part (15) tilts forward due to the shortening of the top link (25) length. The lowering height of the planting part (15) becomes higher than the standard due to the contact, and the distance between the traveling vehicle (1) and the planting part (15) can be maintained to prevent interference, and the planting part (15 ) And the handling operability can be improved more easily than before.
[0022]
Moreover, the top link (25) to be connected to the traveling vehicle (1) is provided with a rising stopper (68) for contacting the upper surface side of the lower link (26) on the lower surface side of the base end portion, and the planting portion (15) is lifted. The planting portion (15) is configured to be limited by the stopper (68), and is not affected by the amount of seedlings or the front / rear tilt adjustment of the planting portion (15), etc. Can be lifted and supported, and it is possible to easily secure a sufficient lift of the planting part (15) by preventing abnormal approach to the traveling vehicle (1). It is possible to eliminate problems such as the floats (34) and (35) coming into contact with the ridges, and to easily improve the movement operability in the state in which the planting part (15) is supported by raising. is there.
[Brief description of the drawings]
FIG. 1 is a side view of a planting part lifting link mechanism.
FIG. 2 is an overall side view.
FIG. 3 is a plan view of the same.
FIG. 4 is a side view of a traveling vehicle.
FIG. 5 is a plan view of the same.
FIG. 6 is a side view of a planting part.
FIG. 7 is a front view of the same.
8 is an operation explanatory view of FIG. 1. FIG.
FIG. 9 is an explanatory diagram of the same.
[Explanation of symbols]
(1) Traveling vehicle (15) Planting part (24a) Quick hitch (25) Top link (26) Lower link (48) Rolling cylinder (rolling member)
(61) Pitching motor (pitching member)
(65) Stay (protruding part)
(67) Lowering stopper (68) Lifting stopper

Claims (4)

トップリンク及びロワーリンクを介して走行車に植付部を昇降自在に装設させると共に、ローリング自在に取付ける植付部の左右傾斜を調節するローリング部材を設ける田植機において、ロワーリンクに植付部を連結させるヒッチの両側を側方に突出させ、ヒッチの両側突出部にロワーリンクを当接させて植付部下降動作を制限するように構成したことを特徴とする田植機。In the rice transplanter, the planting part is installed on the lower link in the rice transplanter in which the planting part is installed on the traveling vehicle via the top link and the lower link so that the planting part can be moved up and down and the right and left inclination of the planting part to be installed in a rolling manner is adjusted. The rice transplanter is characterized in that both sides of the hitch connecting the two are projected sideways, and the lower link is brought into contact with the both-side protruding portions of the hitch to restrict the descending operation of the planting portion. ヒッチの両側にステーを突設させると共に、ロワーリンクの両横に下降ストッパを張出し固定させ、該下降ストッパと前記ステーの当接によって植付部を最下げ高さ位置に支持させるように構成したことを特徴とする請求項1に記載の田植機。The stay is protruded on both sides of the hitch, and the lowering stopper is extended and fixed on both sides of the lower link, and the planting part is supported at the lowest position by the contact between the lowering stopper and the stay. The rice transplanter according to claim 1. 伸縮自在なトップリンクの長さを変更するピッチング部材を設け、植付部の前後傾斜を調節するように構成したことを特徴とする請求項1に記載の田植機。The rice transplanter according to claim 1, wherein a pitching member for changing the length of the stretchable top link is provided to adjust the front-back inclination of the planting portion. 走行車に連結させるトップリンク基端部下面側にロワーリンク上面側を当接させる上昇ストッパを設け、植付部上昇動作を上昇ストッパによって制限するように構成したことを特徴とする請求項1に記載の田植機。The upper link base end part lower surface side connected with a traveling vehicle is provided with the raising stopper which contact | abuts a lower link upper surface side, It comprised so that a planting part raising operation | movement might be restrict | limited by a raising stopper. The rice transplanter described.
JP03980497A 1997-02-06 1997-02-06 Rice transplanter Expired - Lifetime JP3701764B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03980497A JP3701764B2 (en) 1997-02-06 1997-02-06 Rice transplanter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03980497A JP3701764B2 (en) 1997-02-06 1997-02-06 Rice transplanter

Publications (2)

Publication Number Publication Date
JPH10215626A JPH10215626A (en) 1998-08-18
JP3701764B2 true JP3701764B2 (en) 2005-10-05

Family

ID=12563156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03980497A Expired - Lifetime JP3701764B2 (en) 1997-02-06 1997-02-06 Rice transplanter

Country Status (1)

Country Link
JP (1) JP3701764B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4491984B2 (en) * 2001-03-23 2010-06-30 井関農機株式会社 Mobile farm machine
JP2008161202A (en) * 2008-03-26 2008-07-17 Kubota Corp Passenger rice transplanter
JP4988792B2 (en) * 2009-06-26 2012-08-01 ヤンマー株式会社 Rice transplanter
JP6139309B2 (en) * 2013-07-12 2017-05-31 小橋工業株式会社 畦 coating machine

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