JP3742192B2 - Rice transplanter - Google Patents

Rice transplanter Download PDF

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Publication number
JP3742192B2
JP3742192B2 JP15029597A JP15029597A JP3742192B2 JP 3742192 B2 JP3742192 B2 JP 3742192B2 JP 15029597 A JP15029597 A JP 15029597A JP 15029597 A JP15029597 A JP 15029597A JP 3742192 B2 JP3742192 B2 JP 3742192B2
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hitch
link
planting
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shaft
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JPH10323104A (en
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岡 秀 樹 松
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Yanmar 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植付部を走行車に装設させると共に、ネジ軸及びナット部材をトップリンクに組込んで伸縮自在に形成し、前記ネジ軸の螺出入によってトップリンクを伸縮させて植付部の前後方向傾斜角度を変更させ、フロートの植深検出精度の向上または植付爪の苗植付け姿勢の適正化などを図る技術がある。しかし乍ら、前記従来技術は、トップリンクを形成するリンク部材にナット部材を溶接固定させていたから、前記ナット部材を高精度で固定し得ず、ナット部材に螺着させるネジ軸の回転負荷を容易に低減し得ず、ネジ軸を回転させるのに出力の大きなモータを大電流で駆動する必要があると共に、ナット部材を残した状態でネジ軸側を脱着させて分解組立を行う必要があり、しかも前記トップリンク後部のヒッチ連結部を曲げ加工により左右幅を縮少させて形成することにより、トップリンクの強度が曲げ加工によって低下し易く、大型植付部の支持に必要なトップリンク強度を容易に確保し得ず、トップリンク構造の小型軽量化並びに製造コストの低減などを容易に図り得ない等の問題がある。
【0003】
【課題を解決するための手段】
請求項1に係る発明は、トップリンク及びロワーリンクを介して植付部を走行車に装設させると共に、ネジ軸及びナット部材をトップリンクに組込んで伸縮自在に形成する田植機において、前記トップリンクを形成するリンク部材に前記ナット部材をインロー嵌合させて着脱可能に固定させたもので、インロー嵌合によってナット部材をリンク部材に高精度で固定し得、前記ネジ軸の回転操作力を容易に低減し得、前記ネジ軸を回転させるモータの小型化並びにモータ駆動電流低減などを容易に行い得ると共に、リンク部材に対しナット部材を脱着させることによってネジ軸にナット部材を螺着させた状態で脱着作業を行い得、前記ネジ軸及びナット部材を同一ユニットとして組立分解などを行えて取扱い操作性の向上などを容易に図り得、またトップリンク構造の小型軽量化並びに製造コストの低減なども容易に図り得るものである。
【0004】
請求項2に係る発明は、トップリンク後部をヒッチの左右外側に連結させたもので、トップリンク後部を略一直線形に前後方向に延設し得、トップリンク後部の曲げ加工による強度低下によって強度不足になる不具合を容易になくし得、トップリンク構造の小型軽量化並びに製造コストの低減などを容易に図り得るものである。
【0005】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図1は乗用田植機の側面図、図2は同平面図を示し、図中(1)は作業者が搭乗する走行車であり、エンジン(2)を車体フレーム(3)前部上方に搭載させ、ミッションケース(4)前方にフロントアクスルケース(5)を介して水田走行用前輪(6)を支持させると共に、前記ギヤ変速ケース(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、乗降ステップ(11)を介して作業者が搭乗する車体カバー(12)によって前記ミッションケース(4)等を覆い、前記車体カバー(12)上部に運転席(13)を取付け、その運転席(13)の前方で前記ボンネット(9)後部に操向ハンドル(14)を設ける。
【0006】
また、図中(15)は10条植え用の苗載台(16)並びに10条分の植付爪(17)などを具備する植付部であり、前高後低の合成樹脂製の前傾式苗載台(16)を下部レール(18)及びガイドレール(19)を介して植付ケース(20)に左右往復摺動自在に支持させると共に、一方向に等速回転させるロータリケース(21)を前記植付ケース(20)に支持させ、該ケース(21)の回転軸芯を中心に対称位置に一対の爪ケース(22)(22)を配設し、その爪ケース(22)(22)先端に植付爪(17)(17)を取付ける。また前記植付ケース(20)の前側にヒッチ台(23)を設け、該ヒッチ台(23)をヒッチ機構(24)に連結させ、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)後部にヒッチ機構(24)を取付け、走行車(1)後側にリンク機構(27)を介して植付部(15)を連結させ、前記リンク機構(27)を介して植付部(15)を昇降させる昇降シリンダ(28)をロワーリンク(26)に連結させ、前記前後輪(6)(8)を走行駆動して移動すると同時に、左右に往復摺動させる苗載台(16)から一株分の苗を植付爪(17)によって取出し、連続的に苗植え作業を行うように構成する。
【0007】
また、図中(29)は走行変速レバー、(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10条用の側条施肥機である。
【0008】
さらに、図2、図3、図4に示す如く、前記運転席(13)両側の車体カバー(12)両側に左右補助デッキ(37)(37)を固定させ、該デッキ(37)(37)前部に前記乗降ステップ(11)(11)を固定させ、前記補助デッキ(37)(37)後部の機外側に左右サイドデッキ(38)(38)を起伏自在かつ脱着自在に連結させると共に、6条用の中央施肥部(39)と、各2条用の左右施肥部(40)(40)とに、前記施肥機(36)を分割して構成し、右施肥部(40)機外側に送肥ブロワ(41)を配設させ、運転席(13)両側にレバー(29)(30)(31)取付け位置を隔てて左右施肥部(40)(40)を収納する一方、6条分の中央苗台(42)と各2条分の左右苗台(43)(43)とに苗載台(16)を分割して形成し、苗台支点軸(44)(44)回りに左右苗台(43)(43)を上昇させて中央苗台(42)上側に折畳み収納させ、また2条分の植付爪(17)…及びフロート(35)を備える左右植付ケース(20)(20)を中央苗台(42)後側にケース支点軸(45)回りに回動させて折畳み収納させるように構成している。
【0009】
さらに、図3乃至図6に示す如く、前記の左右一対の車体フレーム(3)(3)後端部上側に正面視門形のヒッチフレーム(46)を固定させ、前低後高に傾斜させて後端部をヒッチフレーム(46)中間に固定させる左右一対のサブフレーム(47)(47)の間に前記昇降シリンダ(28)を取付けると共に、車体フレーム(3)後端部に支軸(48)を介して前記ロワーリンク(26)前部を回転自在に取付け、またヒッチフレーム(46)中間のブラケット(49)に支軸(50)を介してトップリンク(25)前部を回転自在に取付けるもので、前記ロワーリンク(26)前端部の本機支持部に基板(51)を立設させ、基板(51)上端とロワーリンク(26)間にリンクフレーム(52)を側面視三角形に連結させて固定させ、前記三角形頂角の基板(51)とリンクフレーム(52)の連結固定部にピン(53)を介して昇降シリンダ(28)のピストンロッド(28a)を連結させている。
【0010】
さらに、図3、図4、図7乃至図9に示す如く、前記ロワーリンク(26)の後端二叉部間に支軸(54)を介して前ヒッチ(55)下端部を連結させ、前ヒッチ(55)の上下長さ中間に貫通させる支軸(56)両端部にトップリンク(25)後端二叉部を連結させると共に、前ヒッチ(55)下端部に受筒(57)を一体固定させ、ローリング支点軸(58)の前半部を受筒(57)に軸受ベアリング(59)を介して回転自在に軸支させる一方、後ヒッチ(60)の下端部に受筒(61)を一体固定させ、該受筒(61)にローリング支点軸(58)の後半部を貫挿固定させる。
【0011】
また、図10にも示す如く、前ヒッチ(55)上端部に受枠(62)を介して油圧ローリングシリンダ(63)を取付け、後ヒッチ(60)上端部で一側に突出させる受フレーム(64)にローリングシリンダ(63)のピストン(65)先端を連結させ、ピストン(65)の進退動作制御によってローリング支点軸(59)回りに後ヒッチ(60)を左右に揺動させると共に、後ヒッチ(60)下端部にクイックヒッチピン(66)を固定させ、後ヒッチ(60)上端部に上向き凹形のクイックヒッチフック(67)を固定させるもので、前記植付部(15)の中央植付ケース(20)前面部にブラケット(68)を介してヒッチ台(69)下端部を固定させ、前向き凹形ノッチ(70)を有するノッチ板(71)をヒッチ台(69)下端部前面に固定させ、またヒッチ台(69)上端部にヒッチ軸(72)を横架させ、前記クイックヒッチピン(66)にノッチ(70)を後方から嵌合させ、前記クイックヒッチフック(67)にヒッチ軸(72)を上方から嵌合させ、後ヒッチ(60)にヒッチ台(69)を着脱自在に連結させ、前記ローリング支点軸(59)回りにローリング自在に植付部(15)を取付け、ローリングシリンダ(63)制御により植付部(15)の左右傾斜調節を行うと共に、前記車体フレーム(3)後部と植付ケース(20)の間に植付PTO軸(73)を着脱自在に架設し、ミッションケース(4)の植付駆動力を植付ケース(20)にPTO軸(73)を介して伝えるように構成している。
【0012】
また、図8、図9に示す如く、前記ヒッチ台(69)に支軸(74)を介してロックボルト(75)基端を回転自在に連結させると共に、前記クイックヒッチピン(66)に一対二組のロック板(76)…を固定させ、一対のロック板(76)(76)間に上方からロックボルト(75)先端部を挿入させ、ロックボルト(75)先端のナット(77)をロック板(76)前面に螺着当接させ、ナット(77)の締付け固定によってクイックヒッチピン(66)とノッチ(70)を嵌合固定させ、後ヒッチ(60)にヒッチ台(69)を一体固定させて衝撃などによるヒッチ台(69)の機械振動を防ぐように構成している。
【0013】
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田植機において、前記各リンク(25)(26)を連結させる前ヒッチ(55)を設け、前ヒッチ(55)にローリング支点軸(59)を介して後ヒッチ(60)を連結させると共に、後ヒッチ(60)に着脱自在に連結させるヒッチ台(69)を植付部(15)に取付け、前記ヒッチ台(69)と植付部(15)の連結強度を容易に向上させ、かつ前後ヒッチ(55)(60)間に設けるローリング支点軸(59)の軸受長さを容易に確保し、ローリング支点軸(59)及び軸受の許容荷重を容易に増大させ、大型植付部(15)の支持強度向上並びに支持構造の簡略化などを容易に行えると共に、植付部(15)の左右傾斜を調節するローリングシリンダ(63)などのローリング制御機構を走行車(1)側に前後ヒッチ(55)(60)を介して取付け、走行車(1)側にローリング制御機構を残した状態で植付部(15)を取外せるように構成している。
【0014】
また、クイックヒッチピン(66)及びクイックヒッチフック(67)を介して後ヒッチ(60)にヒッチ台(69)を着脱自在に係止させるように構成し、前記リンク(25)(26)の昇降操作によって後ヒッチ(60)にヒッチ台(69)を係脱させる動作を行わせると共に、前ヒッチ(55)と後ヒッチ(60)の相対角度を変更するローリング制御用アクチュエータであるローリングシリンダ(63)を設け、前記ローリングシリンダ(63)の動力源を走行車(1)側で確保し乍ら植付部(15)脱着作業性の向上などを容易に行得るもので、前後ヒッチ(55)(60)下端部をローリング支点軸(59)によって連結させると共に、前後ヒッチ(55)(60)の各上端部間をローリングシリンダ(63)によって連結させ、ローリングシリンダ(63)及び油圧ホースなどを前記リンク(25)(26)に取付けた状態で植付部(15)を脱着できると共に、後ヒッチ(60)またはヒッチ台(69)のいずれか一方に設けるロックボルト(75)をもう一方に着脱自在に固定させ、着脱自在なヒッチ台(69)の機械振動をロックボルト(75)の固定によって容易に阻止できるように構成している。
【0015】
さらに、前記支軸(50)に前端側を連結させるパイプ形前フレーム(78)と、前記の前ヒッチ(55)に中間を貫挿させた支軸(56)両端に連結させる左右一対の平板形後フレーム(79)(79)と、後フレーム(79)前端部に固定させるモータベース(80)と、該モータベース(80)に取付ける電動ピッチングモータ(81)と、該モータ(81)の出力軸(82)に固定させるネジ軸(83)を、前記トップリンク(25)に備える。そして、前記ネジ軸(83)先端をナット体(84)に螺着挿入させ、前フレーム(78)後部内孔にナット体(84)前部を着脱自在にインロー嵌合させ、前フレーム(78)後部のフランジ(85)とナット体(84)前部のフランジ(86)を着脱自在にボルト(87)止め固定させ、前記ピッチングモータ(81)制御によりネジ軸(83)を正逆転させてトップリンク(25)前後長を変更し、前後ヒッチ(55)(60)及びヒッチ台(69)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と共に、モータベース(80)にセンサフレーム(88)を連設させ、ポテンショメータ形伸縮センサ(89)をフレーム(88)に取付け、該センサ(89)によってトップリンク(25)長さを検出させるように構成している。
【0016】
また、後フレーム(79)(79)左右外側に軸体(90)を介して左右バネ座(91)(91)を固定させ、左右バネ座(91)(91)にテンション調節ボルト(92)(92)を介して左右リンクバネ(93)(93)後端を連結させると共に、前記支軸(50)両端部に左右リンクバネ(93)(93)前端を連結させ、側面視で各支軸(50)(56)を結ぶ直線上にリンクバネ(93)を張設させ、植付部(15)重量に抗してトップリンク(25)を縮少させるモータ(81)負荷をリンクバネ(93)のトップリンク(25)縮少方向の縮少力によって低減させるように構成している。さらに、前記モータベース(80)両側と支軸(56)両端部の間に連結させる左右の後フレーム(79)(79)を前後方向に略一直線上で延設させ、各フレーム(79)(79)を略平行に延長させて植付部(15)支持強度を確保するように構成している。
【0017】
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)を介して植付部(15)を走行車(1)に装設させると共に、ネジ軸(83)及びナット部材であるナット体(84)をトップリンク(25)に組込んで伸縮自在に形成する田植機において、前記トップリンク(25)を形成するリンク部材である前フレーム(78)に前記ナット体(84)をインロー嵌合させて固定させ、インロー嵌合によってナット体(84)を前フレーム(78)に高精度で固定でき、前記ネジ軸(83)の回転操作力を容易に低減させ、前記ネジ軸(83)を回転させるピッチングモータ(81)の小型化並びにピッチングモータ(81)駆動電流低減などを行えると共に、前フレーム(78)に対しナット体(84)を脱着させることによってネジ軸(83)にナット体(84)を螺着させた状態で脱着作業を行え、前記ネジ軸(83)及びナット体(84)を同一ユニットとして組立分解などを行えて取扱い操作性の向上などを図れ、またトップリンク(25)構造の小型軽量化並びに製造コストの低減なども図れる。またトップリンク(25)後部の後フレーム(79)を前ヒッチ(55)の左右外側に連結させ、トップリンク(25)後部の左右の後フレーム(79)(79)を略一直線形に前後方向に延設させ、トップリンク(25)後部の後フレーム(79)の曲げ加工による強度低下によって強度不足になる不具合をなくし、トップリンク(25)構造の小型軽量化並びに製造コストの低減などを図れるように構成している。
【0018】
さらに、図5、図6に示す如く、前記ロワーリンク(26)前部側面に支点軸(94)を介して引上アーム(95)(96)を回転自在に軸支させ、ターンバックル付長さ調節自在なフレキシブルワイヤ(97)を介して引上アーム(95)を車体フレーム(3)後部に連結させ、植付部(15)両側の左右サイドマーカアーム(図示省略)に引上ワイヤ(98)を介して引上アーム(96)を連結させ、ロワーリンク(26)の上昇によって引上ワイヤ(98)が引張られてサイドマーカ(図示省略)を上昇させると共に、前記リンクフレーム(52)側面に支軸(99)を介してロックアーム(100)を回転自在に取付け、支軸(99)を介してロックアーム(100)に解除アーム(101)を固定させ、解除アーム(101)に解除ワイヤ(102)を連結させ、副変速レバー(30)の左右切換操作により解除ワイヤ(102)を引張り、ロワーリンク(26)上昇により引上アーム(96)の係合軸体(103)がサイドマーカ引上げ位置に係止されているロックアーム(100)を解除動作させ、左右いずれか一方の解除操作されたサイドマーカを接地させ、次工程圃場面に次工程植付け軌跡を描かせるもので、植付部(15)上昇動作によってサイドマーカを自動的に上昇させ、ロックアーム(100)に軸体(103)を係合させてサイドマーカを上昇維持する一方、前記レバー(30)の植付部(15)下降操作後のサイドマーカ選択操作によって左右いずれかのロックアーム(100)を解除動作させてサイドマーカを下降着地させ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、請求項1に係る発明は、トップリンク(25)及びロワーリンク(26)を介して植付部(15)を走行車(1)に装設させると共に、ネジ軸(83)及びナット部材(84)をトップリンク(25)に組込んで伸縮自在に形成する田植機において、前記トップリンク(25)を形成するリンク部材(78)に前記ナット部材(84)をインロー嵌合させて着脱可能に固定させたもので、インロー嵌合によってナット部材(84)をリンク部材(78)に高精度で固定でき、前記ネジ軸(83)の回転操作力を容易に低減でき、前記ネジ軸(83)を回転させるモータ(81)の小型化並びにモータ(81)駆動電流低減などを容易に行うことができると共に、リンク部材(78)に対しナット部材(84)を脱着させることによってネジ軸(83)にナット部材(84)を螺着させた状態で脱着作業を行うことができ、前記ネジ軸(83)及びナット部材(84)を同一ユニットとして組立分解などを行えて取扱い操作性の向上などを容易に図ることができ、またトップリンク(25)構造の小型軽量化並びに製造コストの低減なども容易に図ることができるものである。
【0020】
請求項2に係る発明は、トップリンク(25)後部をヒッチ(55)の左右外側に連結させたもので、トップリンク(25)後部を略一直線形に前後方向に延設でき、トップリンク(25)後部の曲げ加工による強度低下によって強度不足になる不具合を容易になくすことができ、トップリンク(25)構造の小型軽量化並びに製造コストの低減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】田植機の全体側面図である。
【図2】同平面図である。
【図3】リンク機構の側面図である。
【図4】同平面説明図である。
【図5】リンク機構前部の側面図である。
【図6】同平面図である。
【図7】リンク機構後部の側面図である。
【図8】同部分側面図である。
【図9】リンク機構後部の正面説明図である。
【図10】同部分正面図である。
【図11】トップリンクの平面図である。
【図12】同側面図である。
【図13】同拡大側面図である。
【符号の説明】
(1)走行車
(15)植付部
(25)トップリンク
(26)ロワーリンク
(55)前ヒッチ
(78)前フレーム(リンク部材)
(83)ネジ軸
(84)ナット体(ナット部材)
[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, a planting part is installed in a traveling vehicle via a top link and a lower link, and a screw shaft and a nut member are incorporated into the top link to be formed to be extendable and retracted. There is a technique for expanding and contracting to change the inclination angle in the front-rear direction of the planting part to improve float planting depth detection accuracy or optimize the planting nail seedling planting posture. However, according to the prior art, the nut member is welded and fixed to the link member forming the top link. Therefore, the nut member cannot be fixed with high accuracy, and the rotational load of the screw shaft screwed to the nut member is easy. In order to rotate the screw shaft, it is necessary to drive a motor with a large output with a large current, and it is necessary to detach and reassemble the screw shaft side with the nut member remaining, In addition, by forming the hitch connecting portion at the rear of the top link by bending the left and right widths, the strength of the top link is easily lowered by bending, and the top link strength necessary for supporting the large planting portion is increased. There is a problem that the top link structure cannot be easily secured, and the top link structure cannot be easily reduced in size and weight and reduced in manufacturing cost.
[0003]
[Means for Solving the Problems]
The invention according to claim 1 is a rice transplanter in which a planting portion is installed on a traveling vehicle via a top link and a lower link, and a screw shaft and a nut member are incorporated into the top link to be formed to be stretchable. The nut member is fitted into the link member forming the top link by inlay fitting and fixed detachably, and the nut member can be fixed to the link member with high precision by inlay fitting, and the rotational operating force of the screw shaft The motor that rotates the screw shaft can be reduced in size and the motor drive current can be easily reduced, and the nut member is attached to and detached from the link member by screwing the nut member onto the screw shaft. It is possible to perform the detaching work in a state where the screw shaft and the nut member can be assembled and disassembled as the same unit, and the handling operability can be easily improved. Such as the top link size and weight as well as the manufacturing cost of the structure is also to obtain aim ease.
[0004]
The invention according to claim 2 is such that the rear portion of the top link is connected to the left and right outer sides of the hitch, and the rear portion of the top link can be extended in the front-rear direction in a substantially straight line, and the strength is reduced by the strength reduction due to bending of the rear portion of the top link. Insufficient defects can be easily eliminated, and it is possible to easily reduce the size and weight of the top link structure and reduce the manufacturing cost.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view thereof. In the figure, (1) is a traveling vehicle on which an operator is boarded, and an engine (2) is mounted on the upper part of the front of the body frame (3) A front axle case (5) for supporting the front wheel (6) for paddy field travel in front of the transmission case (4), and a rear axle case (7) connected to the rear of the gear transmission case (4), Paddy field traveling rear wheels (8) are supported on the rear axle case (7). The spare seedling platforms (10) are attached to both sides of the bonnet (9) covering the engine (2) and the like, and the transmission case (4) is mounted by the vehicle body cover (12) on which the operator gets on via the getting-on / off 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).
[0006]
Further, in the figure, (15) is a planting part having a seedling stand (16) for ten-row planting and a planting claw (17) for ten strips, etc. A rotary case (in which a tilted seedling mounting table (16) is supported by a planting case (20) through a lower rail (18) and a guide rail (19) so as to be slidable in a reciprocating manner in the left-right direction and is rotated at a constant speed in one direction ( 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). The claw case (22) (22) Attach the planting claws (17) and (17) to the tip. Further, a hitch stand (23) is provided on the front side of the planting case (20), the hitch stand (23) is connected to the hitch mechanism (24), and includes a top link (25) and a lower link (26). (27) A hitch mechanism (24) is attached to the rear, a planting part (15) is connected to the rear side of the traveling vehicle (1) via a link mechanism (27), and planted via the link mechanism (27). A lifting cylinder (28) for raising and lowering the part (15) is connected to the lower link (26), and the front and rear wheels (6) and (8) are driven to move, and at the same time, a seedling stage that is reciprocated to the left and right ( 16) The seedlings for one stock are taken out by the planting claws (17), and the seedlings are continuously planted.
[0007]
In the figure, (29) is a traveling speed change lever, (30) is a sub-shifting lever for planting lifting and working traveling speed change, (31) is a planting sensitivity adjusting lever, (32) is a main clutch pedal, and (33) (33 ) Is a left and right brake pedal, (34) is a center float for leveling two strips, (35) is a side float for leveling two strips, and (36) is a side fertilizer for 10 strips.
[0008]
Further, as shown in FIGS. 2, 3 and 4, left and right auxiliary decks (37) and (37) are fixed to both sides of the vehicle body cover (12) on both sides of the driver seat (13), and the decks (37) and (37) are fixed. The boarding steps (11) and (11) are fixed to the front, and the left and right side decks (38) and (38) are connected to the rear side of the rear side of the auxiliary decks (37) and (37) in a undulating and detachable manner, The fertilizer (36) is divided into a central fertilizer section (39) for six strips and left and right fertilizer sections (40) (40) for two strips, and the right fertilizer section (40) outside the machine The fertilizer feed blower (41) is disposed in the left and right fertilizers (40) (40) with the levers (29), (30), (31) being mounted on both sides of the driver's seat (13). On the center nursery stand (42) and the left and right seedling stands (43) (43) for each of the two strips. The left and right nurseries (43) and (43) are raised around the seedling fulcrum shafts (44) and (44), folded and stored above the center nursery bed (42), and planted for two strips. The left and right planting cases (20) and (20) having the claws (17) and the float (35) are rotated around the case fulcrum shaft (45) on the rear side of the center seedling stand (42) so as to be folded and stored. It is composed.
[0009]
Further, as shown in FIGS. 3 to 6, a front-view portal hitch frame (46) is fixed to the upper side of the rear end of the pair of left and right body frames (3) and (3), and is tilted to the front low and rear high. The lifting cylinder (28) is mounted between a pair of left and right subframes (47) (47) for fixing the rear end portion to the middle of the hitch frame (46), and a support shaft ( 48), and the front part of the lower link (26) is rotatably attached to the bracket (49) in the middle of the hitch frame (46), and the front part of the top link (25) is rotatable via the support shaft (50). The substrate (51) is erected on the machine support portion at the front end of the lower link (26), and the link frame (52) is triangular in the side view between the upper end of the substrate (51) and the lower link (26). Connect to and fix Wherein and substrate triangle apex angle (51) via a pin (53) to the connecting fixing portion of the link frame (52) is connected to a piston rod (28a) of the lifting cylinder (28).
[0010]
Further, as shown in FIGS. 3, 4, 7 to 9, a lower end portion of the front hitch (55) is connected between the rear end bifurcated portions of the lower link (26) via a support shaft (54), The top link (25) and the rear end bifurcated portion are connected to both ends of the support shaft (56) passing through the middle of the vertical length of the front hitch (55), and the receiving tube (57) is connected to the lower end of the front hitch (55). The front half of the rolling fulcrum shaft (58) is rotatably supported by the receiving tube (57) via the bearing bearing (59), while the receiving tube (61) is attached to the lower end of the rear hitch (60). Are integrally fixed, and the latter half portion of the rolling fulcrum shaft (58) is inserted and fixed to the receiving tube (61).
[0011]
Also, as shown in FIG. 10, a hydraulic rolling cylinder (63) is attached to the upper end of the front hitch (55) via a receiving frame (62), and the receiving frame (64) is projected to one side at the upper end of the rear hitch (60). ) Is connected to the tip of the piston (65) of the rolling cylinder (63), and the rear hitch (60) is swung left and right around the rolling fulcrum shaft (59) by the forward / backward movement control of the piston (65). 60) A quick hitch pin (66) is fixed to the lower end portion, and an upward concave quick hitch hook (67) is fixed to the upper end portion of the rear hitch (60). The central planting case of the planting portion (15) (20) The lower end portion of the hitch base (69) is fixed to the front portion via the bracket (68), and the notch plate (71) having the forward concave notch (70) is fixed to the lower end of the hitch base (69). The hitch shaft (72) is horizontally mounted on the upper end of the hitch base (69), the notch (70) is fitted to the quick hitch pin (66) from the rear, and the quick hitch hook (67) is fixed. The hitch shaft (72) is fitted from above, the hitch base (69) is detachably connected to the rear hitch (60), and the planting portion (15) is mounted so as to be rotatable about the rolling fulcrum shaft (59). The planting part (15) is controlled to be tilted horizontally by controlling the rolling cylinder (63), and the planting PTO shaft (73) is detachable between the rear part of the body frame (3) and the planting case (20). It is constructed so that the planting driving force of the mission case (4) is transmitted to the planting case (20) via the PTO shaft (73).
[0012]
As shown in FIGS. 8 and 9, a lock bolt (75) base end is rotatably connected to the hitch base (69) via a support shaft (74), and the quick hitch pin (66) is paired with one to two. The lock plate (76) of the set is fixed, the tip of the lock bolt (75) is inserted between the pair of lock plates (76) (76) from above, and the nut (77) at the tip of the lock bolt (75) is locked. The quick hitch pin (66) and the notch (70) are fitted and fixed by screwing and abutting the front surface of the plate (76), and the nut (77) is fixed, and the hitch base (69) is fixed integrally to the rear hitch (60). Thus, it is configured to prevent mechanical vibration of the hitch base (69) due to impact or the like.
[0013]
As is apparent from the above, in the rice transplanter in which the traveling part (15) is installed in the traveling vehicle (1) through the top link (25) and the lower link (26) so as to be able to move up and down, each link (25) A front hitch (55) for connecting (26) is provided, and the rear hitch (60) is connected to the front hitch (55) via the rolling fulcrum shaft (59) and is also detachably connected to the rear hitch (60). Rolling which attaches a hitch stand (69) to a planting part (15), improves the connection strength of the hitch stand (69) and the planting part (15) easily, and is provided between the front and rear hitch (55) (60) The bearing length of the fulcrum shaft (59) is easily secured, the allowable load of the rolling fulcrum shaft (59) and the bearing is easily increased, the support strength of the large planting part (15) is improved, and the support structure is simplified. Can be done easily, A rolling control mechanism such as a rolling cylinder (63) that adjusts the right and left inclination of the attachment (15) is attached to the traveling vehicle (1) via the front and rear hitches (55) (60), and is rolled to the traveling vehicle (1). It is comprised so that the planting part (15) can be removed in the state which left the control mechanism.
[0014]
Further, the hitch base (69) is detachably locked to the rear hitch (60) through the quick hitch pin (66) and the quick hitch hook (67), and the links (25) (26) are lifted and lowered. A rolling cylinder (63), which is a rolling control actuator that changes the relative angle between the front hitch (55) and the rear hitch (60) while causing the rear hitch (60) to engage and disengage the hitch base (69) by operation. ) And securing the power source of the rolling cylinder (63) on the traveling vehicle (1) side, the planting part (15) can be easily attached and detached, and the front and rear hitch (55) (60) The lower end portion is connected by a rolling fulcrum shaft (59), and the upper end portions of the front and rear hitches (55) (60) are connected by a rolling cylinder (63). The planting part (15) can be detached and attached to either the rear hitch (60) or the hitch stand (69) with the rolling cylinder (63) and the hydraulic hose attached to the link (25) (26). The provided lock bolt (75) is detachably fixed to the other, and the mechanical vibration of the detachable hitch base (69) can be easily prevented by fixing the lock bolt (75).
[0015]
Furthermore, a pipe-shaped front frame (78) for connecting the front end side to the support shaft (50), and a pair of left and right flat plates connected to both ends of the support shaft (56) inserted through the front hitch (55) in the middle. The rear frame (79) (79), the motor base (80) fixed to the front end of the rear frame (79), the electric pitching motor (81) attached to the motor base (80), and the motor (81) The top link (25) includes a screw shaft (83) that is fixed to the output shaft (82). Then, the tip end of the screw shaft (83) is screwed and inserted into the nut body (84), and the front portion of the nut body (84) is detachably fitted into the rear inner hole of the front frame (78), and the front frame (78 ) The rear flange (85) and the nut body (84) front flange (86) are detachably fixed with bolts (87), and the screw shaft (83) is rotated forward and backward by the pitching motor (81) control. By changing the front / rear length of the top link (25), the front / rear hitch (55) (60), the hitch stand (69) and the planting part (15) are tilted back and forth, and the front / rear tilt angle of the planting part (15) is adjusted. The grounding posture of the floats (34) and (35) is corrected, the sensor frame (88) is connected to the motor base (80), the potentiometer type expansion / contraction sensor (89) is attached to the frame (88), and the sensor ( It is configured so as to detect the top link (25) length by 9).
[0016]
The left and right spring seats (91) and (91) are fixed to the left and right outer sides of the rear frames (79) and (79) via the shaft body (90), and the tension adjusting bolt (92) is attached to the left and right spring seats (91) and (91). The rear ends of the left and right link springs (93) and (93) are connected via (92), and the front ends of the left and right link springs (93) and (93) are connected to both ends of the support shaft (50). A link spring (93) is stretched on a straight line connecting the shafts (50) and (56), and the load of the motor (81) that contracts the top link (25) against the weight of the planting part (15) is applied to the link spring. The top link (25) of (93) is configured to be reduced by the reduction force in the reduction direction. Further, left and right rear frames (79) (79) connected between both sides of the motor base (80) and both ends of the support shaft (56) extend in a substantially straight line in the front-rear direction, and each frame (79) ( 79) is extended substantially in parallel to secure the planting portion (15) support strength.
[0017]
As is clear from the above, the planting portion (15) is mounted on the traveling vehicle (1) via the top link (25) and the lower link (26), and the screw shaft (83) and the nut as a nut member are installed. In the rice transplanter in which the body (84) is incorporated into the top link (25) to be stretchable, the nut body (84) is inserted into the front frame (78) which is a link member forming the top link (25). The nut body (84) can be fixed to the front frame (78) with high accuracy by fitting with a spigot fitting, and the rotational operating force of the screw shaft (83) can be easily reduced, and the screw shaft (83 The pitching motor (81) can be reduced in size and the driving current of the pitching motor (81) can be reduced, and the nut body (84) can be attached to and detached from the front frame (78). Thus, the nut shaft (84) is screwed onto the screw shaft (83), and the detachment work can be performed. The screw shaft (83) and the nut body (84) can be assembled and disassembled as the same unit for handling operability. The top link (25) structure can be reduced in size and weight and the manufacturing cost can be reduced. Further, the rear frame (79) of the rear portion of the top link (25) is connected to the left and right outer sides of the front hitch (55), and the left and right rear frames (79) and (79) of the rear portion of the top link (25) are substantially straight. The problem of insufficient strength due to strength reduction due to bending of the rear frame (79) at the rear portion of the top link (25) can be eliminated, and the top link (25) structure can be reduced in size and weight and the manufacturing cost can be reduced. It is configured as follows.
[0018]
Further, as shown in FIGS. 5 and 6, the pull-up arm (95) (96) is rotatably supported on the front side surface of the lower link (26) via a fulcrum shaft (94), thereby providing a length with a turnbuckle. The pull-up arm (95) is connected to the rear part of the vehicle body frame (3) through a flexible wire (97) that can be adjusted in height, and the pull-up wire (15) is connected to the left and right side marker arms (not shown) on both sides. 98) is connected to the pull-up arm (96), and the pull-up wire (98) is pulled by raising the lower link (26) to raise the side marker (not shown), and the link frame (52). The lock arm (100) is rotatably attached to the side surface via the support shaft (99), the release arm (101) is fixed to the lock arm (100) via the support shaft (99), and the release arm (101) is fixed. Solution The wire (102) is connected, the release wire (102) is pulled by the left / right switching operation of the sub-transmission lever (30), and the engagement shaft (103) of the pull-up arm (96) is moved to the side by raising the lower link (26). The lock arm (100) locked at the marker pulling position is released, and either the left or right release side marker is grounded, and the next process planting scene is drawn in the next process field scene. Attached part (15) The side marker is automatically raised by the raising operation, and the shaft (103) is engaged with the lock arm (100) to keep the side marker raised, while the planting part of the lever (30) (15) It is configured such that either the left or right lock arm (100) is released by the side marker selection operation after the lowering operation and the side marker is lowered and landed.
[0019]
【The invention's effect】
As is apparent from the above embodiments, the invention according to claim 1 is configured such that the planting part (15) is mounted on the traveling vehicle (1) via the top link (25) and the lower link (26), and the screw In the rice transplanter in which the shaft (83) and the nut member (84) are incorporated in the top link (25) to be extendable and retractable, the nut member (84) is connected to the link member (78) forming the top link (25). the one obtained by detachably fixed by fitting spigot, can be fixed with high precision nut member (84) to the link member (78) by spigot fit easily a rotational operation force of the screw shaft (83) The motor (81) for rotating the screw shaft (83) can be reduced in size and the drive current of the motor (81) can be easily reduced, and the nut member (84) with respect to the link member (78) can be reduced. By attaching / detaching, the nut member (84) can be attached / detached to the screw shaft (83), and the screw shaft (83) and the nut member (84) can be assembled and disassembled as the same unit. Thus, the handling operability can be easily improved, and the top link (25) structure can be reduced in size and weight and the manufacturing cost can be easily reduced.
[0020]
The invention according to claim 2 is such that the rear portion of the top link (25) is connected to the left and right outer sides of the hitch (55), and the rear portion of the top link (25) can be extended in the front-rear direction in a substantially straight line. 25) It is possible to easily eliminate the problem of insufficient strength due to a decrease in strength due to bending of the rear portion, and to easily reduce the size and weight of the top link (25) structure and reduce the manufacturing cost.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of a link mechanism.
FIG. 4 is an explanatory view of the same plane.
FIG. 5 is a side view of the front part of the link mechanism.
FIG. 6 is a plan view of the same.
FIG. 7 is a side view of a rear portion of the link mechanism.
FIG. 8 is a partial side view of the same.
FIG. 9 is an explanatory front view of the rear part of the link mechanism.
FIG. 10 is a partial front view of the same.
FIG. 11 is a plan view of a top link.
FIG. 12 is a side view of the same.
FIG. 13 is an enlarged side view of the same.
[Explanation of symbols]
(1) traveling vehicle (15) planting part (25) top link (26) lower link (55) front hitch (78) front frame (link member)
(83) Screw shaft (84) Nut body (nut member)

Claims (2)

トップリンク及びロワーリンクを介して植付部を走行車に装設させると共に、ネジ軸及びナット部材をトップリンクに組込んで伸縮自在に形成する田植機において、前記トップリンクを形成するリンク部材に前記ナット部材をインロー嵌合させて着脱可能に固定させたことを特徴とする田植機。In the rice transplanter in which the planting portion is installed in the traveling vehicle via the top link and the lower link, and the screw shaft and the nut member are incorporated into the top link and formed to be extendable and contractible, the link member that forms the top link A rice transplanter characterized in that the nut member is fitted with a spigot and fixed detachably . トップリンク後部をヒッチの左右外側に連結させ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 the rear portion of the top link is connected to the left and right outer sides of the hitch.
JP15029597A 1997-05-23 1997-05-23 Rice transplanter Expired - Fee Related JP3742192B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15029597A JP3742192B2 (en) 1997-05-23 1997-05-23 Rice transplanter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15029597A JP3742192B2 (en) 1997-05-23 1997-05-23 Rice transplanter

Publications (2)

Publication Number Publication Date
JPH10323104A JPH10323104A (en) 1998-12-08
JP3742192B2 true JP3742192B2 (en) 2006-02-01

Family

ID=15493882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15029597A Expired - Fee Related JP3742192B2 (en) 1997-05-23 1997-05-23 Rice transplanter

Country Status (1)

Country Link
JP (1) JP3742192B2 (en)

Also Published As

Publication number Publication date
JPH10323104A (en) 1998-12-08

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