JP3882975B2 - Rice transplanter - Google Patents

Rice transplanter Download PDF

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Publication number
JP3882975B2
JP3882975B2 JP31994098A JP31994098A JP3882975B2 JP 3882975 B2 JP3882975 B2 JP 3882975B2 JP 31994098 A JP31994098 A JP 31994098A JP 31994098 A JP31994098 A JP 31994098A JP 3882975 B2 JP3882975 B2 JP 3882975B2
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planting depth
planting
motor
shaft
cover
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JP31994098A
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JP2000125624A (en
Inventor
本 二 教 山
石 俊 樹 南
井 邦 夫 土
川 雄 一 小
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Yanma Agricultural Equipment Co Ltd
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Yanma Agricultural Equipment Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は植付部に支持するフロートの支持高さを変化させて、苗の植付深さを変更するようにした田植機に関する。
【0002】
【発明が解決しようとする課題】
従来、植付部の植付ケースに支持する植付深さ調節支点軸に、調節リンクなどを介しフロートは支持されていて、調節支点軸に連結する植深レバーを段階的に揺動操作することによって、フロートの支持高さを変化させて植付深さを変更している。
【0003】
しかし乍ら、植深レバーを段階的に操作する場合、植付深さも一定値毎の段階的な変更でしか行われないため、目標とする植付深さに常に一致させるような高精度な植付深さ調節は期待できないものであった。
【0004】
【課題を解決するための手段】
請求項1に係る発明は、走行車の後側にリンク機構を介して昇降可能に連結された植付部と、前記植付部に設けたフロートの支持高さを変更する植深調節部材と、前記植深調節部材に連動部材を介して連結して苗植付深さを無段階に調節する調節作動部材と、該調節作動部材を作動させる植深モータとを備え、前記植深モータによって前記調節作動部材を介して前記植深調節部材が作動されて、苗植付深さが変更されるように構成してなる田植機において、前記植深モータを配置するモータ取付台と、少なくとも前記植深調節部材と前記植深モータの上方を覆うカバーと、オペレータが前記カバーの前方から前記植深調節部材の植深操作位置を視認可能な植深確認部とを備え、前記モータ取付台の上面側に前記植深モータを固着し、前記モータ取付台に軸を介して前記カバーを開閉可能に連結し、前記植深モータの少なくとも前方及び上方が前記カバーによって開閉可能に覆われるように構成しものであるから、高精度な植付深さ調節によって植付爪の植付深さを無段階に調節できる。前記カバーによって前記植深調節部材及び前記植深モータを保護して、前記植深モータ等の性能を維持し、前記植深モータ等の誤動作を防止できる。オペレータが前記カバーの前方外側から前記植深確認部によって現在の植付爪の植付深さを確認できる。
【0005】
【0006】
【0007】
【0008】
【0009】
【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)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、前記ミッションケース(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)に後車輪である水田走行用後輪(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。
【0010】
また、図中(15)は6条植え用の苗載台(16)並びに複数の植付爪(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)の前側にローリング支点軸(23)を介してヒッチブラケット(24)を設け、トップリンク(25)及びロワーリンク(26)を含む昇降リンク機構(27)を介して走行車(1)後側にヒッチブラケット(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制御機構であ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。
【0011】
また、図中(29)は主変速レバー、(30)は副変速レバーでもある植付レバー、(31)は感度設定器、(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。
【0012】
さらに、図3図4に示す如く、前低後高(傾斜角約4度)に傾斜させる前記車体フレーム(3)前部上面に架台(37)…を一体固定させ、架台(37)…の上面に防振ゴム(38)…及びエンジン台(39)を介して前記エンジン(2)を上載させ、前記エンジン(2)の左側に燃料タンク(40)を、またエンジン(2)の右側にマフラー(41)を取付けると共に、車体フレーム(3)前端側略中央にバッテリ(43)を取付けている。
【0013】
またさらに、前記車体フレーム(3)にケース台(44)を一体固定させ、ケース台(44)にステアリングケース(45)を取付け、ハンドル筒体(46)に内挿させる操向ハンドル(14)のステアリング軸(14a)を、左右車体フレーム(3)(3)間の略中央でステアリングケース(45)上面に立設させると共に、ステアリングケース(45)下面に出力軸(47)を突設させ、左右の前輪(6)(6)を方向転換させる操向アーム(48)を前記出力軸(47)に取付けている。
【0014】
また、前記エンジン(2)下方のエンジン台(39)下側に、前後方向に略水平な円筒形の軸受体(49)を熔接固定させ、前記軸受体(49)にカウンタ軸(50)を挿通支持させ、軸受体(49)前方に突出させるカウンタ軸(50)前端にカウンタプーリ(51)を取付けると共に、左右車体フレーム(3)(3)間の略中央上方でエンジン(2)の前方にエンジン出力軸(52)を突設させ、該出力軸(52)に出力プーリ(53)を取付け、該出力プーリ(53)を前記カウンタプーリ(51)にVベルト(54)を介して連結させている。
【0015】
さらに、前記車体フレーム(3)後端部にリヤアクスルケース(7)をボルト止め固定させ、前記リヤアクスルケース(7)前面にミッションケース(4)後面を連結固定させると共に、ミッションケース(4)の右側前面にクラッチケース(55)を一体形成し、クラッチケース(55)前面に無段ベルト変速ケース(56)右側後面を嵌合固定させ、また昇降シリンダ(28)を作動させる油圧ポンプ(57)をベルト変速ケース(56)の左側後面に固定させるもので、四角パイプ形の左右車体フレーム(3)(3)の間でこの上面よりも低位置に前記各ケース(4)(55)(56)及び油圧ポンプ(57)を吊下げ固定させ、ユニバーサルジョイント付き伝動軸(58)を前記カウンタ軸(50)後端とベルト変速ケース(56)間に設け、エンジン(2)出力をベルト変速ケース(56)に伝えると共に、フロントアクスルケース(5)とミッションケース(4)間に前輪伝動軸(59)を設け、ミッションケース(4)の変速出力を各アクスルケース(5)(7)を介して前後輪(6)(8)に伝えるように構成している。
【0016】
図5乃至図8に示す如く、前記センタフロート(34)の前部を上下に揺動自在に支持するピッチング支点軸(60)をフロート(34)後部上面のブラケット(61)に設け、前記植付ケース(20)に回動自在に枢支する植付深さ調節支点軸(62)に、植付深さ調節リンク(63)の基端を固設させると共に、該リンク(63)の先端を前記ピッチング支点軸(60)に連結させている。
【0017】
そして、前記植付ケース(20)側に固定アーム(64a)を介し支持する支軸(65)に出力リンク(66)中間を回動自在に枢支し、前記調節支点軸(62)に基端を固設する揺動アーム(67)の先端に、結合ピン(68)を介して出力リンク(66)後端を連結させると共に、該出力リンク(66)前端の軸(69)に昇降リンク(70)を連結させ、センタフロート(34)の前部上面に固設するブラケット(71)の軸(72)と前記昇降リンク(70)一端側の軸(73)間を揺動リンク(74)を介し連結させている。
【0018】
また、前記支軸(65)にセンサリンク(75)の中間を回動自在に枢支し、センサリンク(75)一端側の軸(76)と前記昇降リンク(70)他端側の軸(77)間を連動リンク(78)で連結させると共に、植付ケース(20)側に固定アーム(64b)を介し支持するポテンショメータ式昇降センサ(79)の検出アーム(80)の長孔(81)に前記センサリンク(75)他端側の検出軸(82)を係合連結させて、耕盤の凹凸或いは深さの変化などで植付深さが変化するとき、昇降センサ(79)によってこれを検出するように構成している。
【0019】
図8乃至図12にも示す如く、前記支点軸(62)に基端を固設する基準植付深さ設定用の植深調節部材である植深調節レバー(83)を植深制御部材である植深モータ(84)により適宜駆動制御するようにしたもので、中央の植付ケース(20)より右側の伝動パイプ(85)に取付板(86)及び側板(87)を介しモータ取付台(88)を固設させ、該モータ取付台(88)のモータ(84)の調節作動部材である回転ネジ軸(89)に結合させる連動部材である移動子(90)のU字形係合金具(91)に、調節レバー(83)に設けるL形係合軸(92)の一端側を係合させて、モータ(84)の駆動によって移動子(90)がネジ軸(89)に沿って上下方向に移動するとき、調節レバー(83)を上下方向に揺動させて支点軸(62)を回動させ、基準植付深さの調節を行うように構成している。
【0020】
また、前記調節レバー(83)は支点軸(62)に固設する基端フレーム部(83a)と、前記係合軸(92)を固設する先端操作部(83b)とに分割させるもので、フレーム部(83a)先端に回動軸(93)を介し左右揺動自在に操作部(83b)を連結させると共に、これらフレーム部(83a)の係合軸(92)と操作部(83b)の軸(94)間に回動軸(93)を中心とした支点越えバネ(95)を張設して、回動軸(93)を中心として操作部(83b)を右方向に揺動させて係合金具(91)より係合軸(92)を離脱させるとき、手動による調節レバー(83)の操作を可能とさせるように構成している。なお、取付台(88)のレバーガイド孔(88a)の一側にはレバー位置決めノッチ(88b)を形成して、調節レバー(83)の手動操作時には操作部(83b)に固設する位置決め板(83c)をノッチ(88b)に係合させて、調節レバー(83)の位置固定を行うように構成している。
【0021】
さらに、前記調節レバー(83)の操作部(83b)は短寸に形成し、モータ取付台(88)に開閉自在に固定するケースであるカバー(96)内にコンパクトに配置させると共に、前記モータ取付台(88)にはフレーム部(83a)のセンサピン(97)の移動位置をアクチュエータ(98a)を介して検出するポテンショメータ式フィードバックセンサである植深センサ(98)を設けて、植付深さ位置を検出するように構成している。なお前記移動子(90)には取付台(88)の移動ガイド孔(88c)に挿入するガイドローラ(90a)を設けて、ネジ軸(89)回転時の移動子(90)の共回りを防止している。
【0022】
そして前記植深モータ(84)或いは調節レバー(83)により支点軸(62)を中心とした植深変更時にはピッチング支点軸(60)部の上下変位置と、出力リンク(66)前端の軸(69)部の上下変位置とを略同一とさせて、植深を変更させても昇降センサ(79)の出力を変化させないように構成している。
【0023】
一方、前記変速ケース(56)の入力軸部には伝動軸(58)を介し伝達されるエンジン(2)からの回転数を検出するエンジン回転センサ(99)を、また前記フロントアクスルケース(5)の入力軸部には伝動軸(59)を介し伝達されるミッションケース(4)からの走行出力を検出する車速センサ(100)を設けると共に、車体カバー(12)の後部略中央には走行車(1)の前後傾きを検出する振り子形或いは静電容量形などの傾斜センサ(101)を設けている。
【0024】
図5、図14に示す如く、左側の車体フレーム(3)にセンサ取付板(102)を介しポテンショメータ式昇降位置センサ(103)を設置すると共に、前記昇降シリンダ(28)のピストンロッド(28a)先端とロワーリンク(26)とを連結するリフトアーム(104)に検出板(105)を固設して、前記位置センサ(103)の検出アーム(106)先端の検出軸(106a)を検出板(105)の長孔に係合させて、前記昇降シリンダ(28)による植付部(15)の昇降時この昇降位置をセンサ(103)で検出するように構成している。
【0025】
ところで図6、図7、図9にも示す如く、前記調節レバー(83)・植深モータ(84)・ネジ軸(89)・移動子(90)などで構成する植深変更部材である植深変更ユニット(107)を、平面視(図6)でセンタフロート(34)と右サイドフロート(35)間で、且つ側面視(図9)で支点軸(60)を中心とした各フロート(34)(35)の上下揺動域内で各フロート(34)(35)とラップする位置に配置して、センタ及びサイドフロート(34)(35)間に植深変更ユニット(107)をコンパクトに配置すると共に、各フロート(34)(35)を植深変更ユニット(107)に干渉させることなく本機側に近接配置させて植付部(15)の前後バランスを良好とさせるように構成している。
【0026】
また、植深変更ユニット(107)をセンタ及びサイドフロート(34)(35)に干渉させることなく、これらフロート(34)(35)間の最大限低位置に配置させ、植付部(15)を低重心化させて、植付部(15)の左右バランスを良好とさせると共に、平面視で後車輪(8)後方の後車輪(8)とラップする位置に植深変更ユニット(107)を配置させた場合でも、調節レバー(83)が短寸のため側面視で後車輪(8)と干渉させることなく、後車輪(8)に最大限植深変更ユニット(107)を近接させて、このユニット(107)の配置の自由度と機体の前後バランスを向上させ、構成でのコンパクト化を図るように構成している。
【0027】
さらに、前記苗載台(16)を横送りする中央植付駆動ケース(20a)からの横送り軸(108)の下方に、植深変更ユニット(107)をコンパクトに配置させて、植付部(15)を低重心化させて機体の左右バランスを向上させるように構成している。
【0028】
また図9にも示す如く、前記調節支点軸(62)からピッチング支点軸(60)までの長さ(b)に対し、調節支点軸(62)から植深変更ユニット(107)或いはモータ(84)前端まで長さ(a)を略2倍以内(a≦2b)に設けて、植深変更ユニット(107)を最大限本機側に近接させ、この重心を前移動化させて、機体の前後バランスを良好とさせるように構成している。
【0029】
図10、図11に示す如く、前記モータ取付台(88)前面下部のブラケット(109)に、カバー(96)内側底面のブラケット(110)を軸(111)を介して回動自在に連結させて、モータ取付台(88)にカバー(96)を開閉自在に取付けて、自動切換時には調節レバー(83)を閉状態のカバー(96)内に収納するように設けている。また前記カバー(96)内に収納する調節レバー(83)の先端部に対応するカバー(96)位置に確認部である長円状のレバー確認孔(112)を開設して、カバー(96)内に収納する調節レバー(83)の植付深さ位置をカバー(96)の外側から確認孔(112)を通して視認して、自動操作中の植付深さの確認を容易に行うように構成している。
【0030】
而して、前記植深モータ(84)による自動植付深さ調節にあっては、前記ネジ軸(89)に結合させる移動子(90)の無段階の移動によって、植付深さの無段階な微調整を行って、植付深さ調節を高精度なものとさせると共に、植深モータ(84)を駆動する植深操作スイッチや、前記センサ(98)によって検出される植付深さの表示用パネルを運転席(13)前方などに配設することによって、運転席(13)位置から植付深さの変更操作や確認を容易に可能とさせることができるものである。またこの場合植付深さを直接的に変更する調節レバー(83)位置よりセンサ(98)で植付深さを検出することによって、部品の組立誤差などに影響されることのない常に正確な植付深さの検出が行われる。
【0031】
また、前記調節レバー(83)は植付深さの手動調節時の上下操作方向に対し、係合金具(91)に係合軸(92)を係脱させて行う自動及び手動の切換えを左右方向とさせて、植深操作方向と自動及び手動切換方向とを直交させ、係合金具(91)と係合軸(92)とが係合する自動から、係合軸(92)が離脱する手動に切換った場合にも植付深さを変化させることなく一定維持させるもので、植付深さの自動調節中に電気系の故障や不具合が発生しても、作業を停止させることなく植付深さを一定維持させた状態のまま手動による作業を継続させることができるものである。さらに機体整備時などにもキースイッチやバッテリ充電などの作業を行うことなく、手動による調節レバー(83)の操作によって、フロート(34)(35)の上下動作の確認などが容易に行えて、保守点検などでの至便化を図ることができる。
【0032】
また、調節レバー(83)の自動及び手動の切換方向と手動による植付深さ調節の操作方向とが略90度異なるため、誤操作を防止し操作フィーリング性を良好とさせると共に、手動切換時には切換方向終端のノッチ(88b)に位置決め板(83c)を確実に係合させて、植付深さを一定維持させることができる。
【0033】
また、通常の自動操作中前記調節レバー(83)やモータ(84)などのカバー(96)内収納によって、これらの性能や耐久性を向上させ、誤動作を防止することができると共に、収納される調節レバー(83)の植付深さ位置を、カバー(96)外側より確認孔(112)を通して確実に視認して、別途特別な植深用インジケータなど用いることなく、植付深さの確認を容易に行うことができる。
【0034】
さらに、前記取付台(88)の移動ガイド孔(88c)に移動子(90)のガイドローラ(90a)を挿入させることによって、移動子(90)のネジ軸(90)に沿った移動がスムーズとなって、モータ(84)の駆動負荷を軽減させ、モータ(84)の小型軽量化を可能とさせて、前後バランスを良好とさせることができる。
【0035】
このように、調節レバー(83)でもって自動及び手動の切換えが行われる植付深さ調節機構において、本実施例の如くレバー(83)位置の検出をレバー(83)に連結させるセンサ(98)のみで行う構成の場合、手動に切換えてレバー(83)を移動操作すると、センサ(98)からの出力で植深モータ(84)が駆動してフロート(34)(35)などの破損事故に連がる不具合がある。
【0036】
そのため、図13に示す如く、係合金具(91)と係合軸(92)との係合を検出するロック確認用センサ(113)をレバー(83)或いは移動子(90)側の何れか一方に設置して、手動切換えで係合軸(92)が係合金具(91)より離脱するときには、ロック確認用センサ(113)からの信号で植深センサ(98)出力で植深モータ(84)が駆動するのを中断させ、モータ(84)による植付深さ調節が行われるのを中止させるように構成している。
【0037】
また図15に示すものは、前記植深センサ(98)を移動子(90)側に設け、自動操作中で植深モータ(84)により移動子(90)が移動するときのみ植深センサ(98)を動作させ、センサ(98)の出力値と目標値とが一致するまで植深モータ(84)を駆動する構成例を示すもので、移動子(90)にセンサピン(97)を固設させ、該ピン(97)に当接させるアクチュエータ(98a)によって移動子(90)の移動位置を検出する植深センサ(98)を取付台(88)に設けて、係合金具(91)より係合軸(92)の離脱した調節レバー(83)の手動操作時には、植深センサ(98)との連結関係を遮断して、植深モータ(84)による植付深さ調節を中止させるものである。
【0038】
【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、走行車(1)の後側にリンク機構(27)を介して昇降可能に連結された植付部(15)と、植付部(15)に設けたフロート(34)(35)の支持高さを変更する植深調節部材(83)と、植深調節部材(83)に連動部材(90)を介して連結して苗植付深さを無段階に調節する調節作動部材(89)と、該調節作動部材(89)を作動させる植深モータ(84)とを備え、前記植深モータによって前記調節作動部材を介して前記植深調節部材が作動されて、苗植付深さが変更されるように構成してなる田植機において、植深モータ(84)を配置するモータ取付台(88)と、少なくとも植深調節部材(83)と植深モータ(84)の上方を覆うカバー(96)と、オペレータがカバー(96)の前方から植深調節部材(83)の植深操作位置を視認可能な植深確認部(112)とを備え、モータ取付台(88)の上面側に植深モータ(84)を固着し、モータ取付台(88)に軸(111)を介してカバー(96)を開閉可能に連結し、植深モータ(84)の少なくとも前方及び上方が前記カバー (96)によって開閉可能に覆われるように構成したものであるから、高精度な植付深さ調節によって植付爪(17)の植付深さを無段階に調節できる。カバー(96)によって植深調節部材(83)及び植深モータ(84)を保護して、植深モータ(84)等の性能を維持し、植深モータ(84)等の誤動作を防止できる。オペレータがカバー(96)の前方外側から植深確認部(112)によって現在の植付爪(17)の植付深さを確認できる。
【0039】
【0040】
【0041】
【0042】
【図面の簡単な説明】
【図1】田植機の全体側面図である。
【図2】田植機の全体平面図である。
【図3】走行車体の側面説明図である。
【図4】走行車体の平面説明図である。
【図5】植付部の側面説明図である。
【図6】フロート部の平面説明図である。
【図7】センタフロート部の平面説明図である。
【図8】センタフロート部の側面説明図である。
【図9】植深調節部の側面図である。
【図10】植深調節部の側面説明図である。
【図11】植深調節部の正面説明図である。
【図12】植深調節部の平面説明図である。
【図13】植深センサ部の平面説明図である。
【図14】昇降位置センサ部の取付説明図である。
【図15】植深センサ部の他の実施構造の説明図である。
【符号の説明】
(1)走行車
(15)植付部
(27)リンク機構
(34)(35)フロート
(83)植深調節レバー(植深調節部材)
(84)植深モータ
(88)モータ取付台
(89)ネジ軸(調節作動部材)
(90)移動子(連動部材)
(96)カバー
(111)軸
(112)確認孔(確認部)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice transplanter in which the support height of a float supported by a planting part is changed to change the seedling planting depth.
[0002]
[Problems to be solved by the invention]
Conventionally, the float is supported on the planting depth adjustment fulcrum shaft supported by the planting case of the planting part via an adjustment link or the like, and the planting depth lever connected to the adjustment fulcrum shaft is swung stepwise. Thus, the planting depth is changed by changing the support height of the float.
[0003]
However notwithstanding et al, when operating stepwise the Uefuka lever, since the planting depth also is performed only in a gradual change at constant values, high-precision, such as always to coincide with the planting depth of the target The planting depth adjustment was not expected.
[0004]
[Means for Solving the Problems]
The invention according to claim 1 is a planting part that is connected to the rear side of the traveling vehicle via a link mechanism so as to be movable up and down, and a planting depth adjusting member that changes the support height of the float provided in the planting part, An adjustment operating member that is connected to the planting depth adjusting member via an interlocking member to adjust the seedling planting depth steplessly, and a planting depth motor that operates the adjustment operating member , In the rice transplanter configured such that the planting depth adjusting member is operated via the adjustment operating member to change the seedling planting depth , a motor mounting base on which the planting motor is disposed, and at least the A cover that covers the planting depth adjustment member and the planting depth motor; and a planting depth confirmation unit that allows an operator to visually recognize the planting depth operation position of the planting depth adjustment member from the front of the cover. The planting motor is fixed to the upper surface side, and the mode is The mount via a shaft and linked to opening and closing the cover, from at least front and above the Uefuka motor is that configured to be openable and closable covered by the cover, accurate planting depth By adjusting the height, the planting depth of the planting claw can be adjusted steplessly. The cover can protect the planting depth adjusting member and the planting depth motor, maintain the performance of the planting depth motor, and prevent malfunction of the planting depth motor and the like. The operator can confirm the current planting depth of the planting claw from the front outside of the cover by the planting depth confirmation unit.
[0005]
[0006]
[0007]
[0008]
[0009]
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 passenger rice transplanter, and FIG. 2 is a plan view thereof. In FIG. 1, (1) is a traveling vehicle on which an operator is boarded, and an engine (2) is mounted on a body frame (3). A front axle case (5) is supported in front of the case (4) via a front axle case (5), and a rear axle case (7) is connected to the rear part of the transmission case (4) to connect the rear axle case ( 7) support the rear wheels (8) for paddy field traveling as rear wheels. 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).
[0010]
Further, in the figure, (15) is a planting part having a seedling mount (16) for six-row planting and a plurality of planting claws (17), etc. A rotary case (21) for supporting the seedling stage (16) on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable to the left and right and rotating at a constant speed in one direction. Is supported by the planting case (20), and a pair of claw cases (22) and (22) are arranged at symmetrical positions around the rotational axis of the case (21). The claw cases (22) and (22) ) Attach the planting claws (17) and (17) to the tip. Further, a hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a lifting link mechanism (27) including a top link (25) and a lower link (26) is provided. A hydraulic lift cylinder (28), which is a hydraulic lift control mechanism for connecting the hitch bracket (24) to the rear side of the traveling vehicle (1) and moving the planting part (15) up and down via the link mechanism (27), 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 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.
[0011]
In the figure, (29) is the main speed change lever, (30) is the planting lever that is also the sub speed change lever, (31) is the sensitivity setting device, (32) is the main clutch pedal, and (33) and (33) are the left and right brakes. Pedal, (34) is a two-level leveling center float, (35) is a two-level leveling side float, and (36) is a six-level side fertilizer.
[0012]
Further, as shown in FIGS . 3 and 4 , a gantry (37) is integrally fixed to the upper surface of the front part of the vehicle body frame (3) which is inclined to a front low rear height (an inclination angle of about 4 degrees), and the gantry (37). The engine (2) is mounted on the upper surface of the engine (2) via an anti-vibration rubber (38) and an engine stand (39), a fuel tank (40) is mounted on the left side of the engine (2), and a right side of the engine (2) is mounted. A muffler (41) is attached to the vehicle body, and a battery (43) is attached to the vehicle frame (3) at the front center side.
[0013]
Still further, a steering wheel (14) for fixing a case base (44) to the vehicle body frame (3), attaching a steering case (45) to the case base (44), and inserting the steering wheel into the handle cylinder (46). The steering shaft (14a) is erected on the upper surface of the steering case (45) at the approximate center between the left and right body frames (3) and (3), and the output shaft (47) is projected on the lower surface of the steering case (45). The steering arm (48) for changing the direction of the left and right front wheels (6) (6) is attached to the output shaft (47).
[0014]
A cylindrical bearing body (49) that is substantially horizontal in the front-rear direction is welded and fixed to the lower side of the engine base (39) below the engine (2), and a counter shaft (50) is attached to the bearing body (49). The counter pulley (51) is attached to the front end of the counter shaft (50) that is inserted and supported and protrudes forward of the bearing body (49), and the front of the engine (2) is positioned approximately at the upper center between the left and right body frames (3) and (3). The engine output shaft (52) is projected on the output shaft, the output pulley (53) is attached to the output shaft (52), and the output pulley (53) is connected to the counter pulley (51) via the V belt (54). I am letting.
[0015]
Further, a rear axle case (7) is bolted and fixed to the rear end of the vehicle body frame (3), the rear surface of the transmission case (4) is connected and fixed to the front surface of the rear axle case (7), and the right side of the transmission case (4) A hydraulic pump (57) for integrally forming a clutch case (55) on the front surface, fitting and fixing the right rear surface of the continuously variable belt transmission case (56) on the front surface of the clutch case (55), and operating the lifting cylinder (28). The case (4) (55) (56) is fixed to the left rear surface of the belt transmission case (56), and is positioned lower than the upper surface between the right and left body frames (3) and (3) of the square pipe shape. And the hydraulic pump (57) is suspended and fixed, and the transmission shaft (58) with a universal joint is connected to the rear end of the counter shaft (50) and the belt transmission case (56). The transmission output of the engine (2) is transmitted to the belt transmission case (56), and the front wheel transmission shaft (59) is provided between the front axle case (5) and the transmission case (4), and the transmission output of the transmission case (4) is provided. Is transmitted to the front and rear wheels (6) and (8) through the axle cases (5) and (7).
[0016]
As shown in FIGS. 5 to 8, a pitching fulcrum shaft (60) for swinging the front part of the center float (34) up and down is provided on the bracket (61) on the upper surface of the rear part of the float (34). The base end of the planting depth adjusting link (63) is fixed to the planting depth adjusting fulcrum shaft (62) pivotally supported by the attached case (20), and the tip of the link (63) is fixed. Is connected to the pitching fulcrum shaft (60).
[0017]
Then, the middle of the output link (66) is pivotally supported on the support shaft (65) supported on the planting case (20) via the fixed arm (64a), and is based on the adjustment fulcrum shaft (62). The rear end of the output link (66) is connected to the front end of the swing arm (67) having a fixed end via a coupling pin (68), and the lifting link is connected to the shaft (69) at the front end of the output link (66). (70) is connected, and a swing link (74) is provided between the shaft (72) of the bracket (71) fixed to the front upper surface of the center float (34) and the shaft (73) on one end side of the lift link (70). ).
[0018]
Further, the middle of the sensor link (75) is pivotally supported on the support shaft (65), and the shaft (76) on one end side of the sensor link (75) and the shaft on the other end side of the lift link (70) ( 77) are connected by an interlocking link (78), and the long hole (81) of the detection arm (80) of the potentiometer type lift sensor (79) supported on the planting case (20) via the fixed arm (64b) When the sensor shaft (82) on the other end side of the sensor link (75) is engaged and connected, and the planting depth changes due to the unevenness of the tiller or the change of the depth, the lifting sensor (79) Is configured to detect.
[0019]
As shown in FIGS. 8 to 12, a planting depth control member (83), which is a planting depth adjusting member for setting a reference planting depth, in which a base end is fixed to the fulcrum shaft (62), is used as a planting depth control member. Drive control is appropriately performed by a certain planting depth motor (84), and the motor mounting base is attached to the transmission pipe (85) on the right side of the center planting case (20) via the mounting plate (86) and the side plate (87). U-shaped engagement bracket of a moving element (90) which is an interlocking member to which (88) is fixed and coupled to a rotating screw shaft (89) which is an adjustment operating member of the motor (84) of the motor mounting base (88) (91) is engaged with one end of an L-shaped engaging shaft (92) provided on the adjusting lever (83), and the motor (84) is driven along the screw shaft (89) by driving the motor (84). When moving up and down, swing the adjustment lever (83) up and down to support (62) is rotated and is configured to perform adjustment of the reference planting depth.
[0020]
The adjustment lever (83) is divided into a base frame portion (83a) fixed to the fulcrum shaft (62) and a distal end operation portion (83b) fixed to the engagement shaft (92). The operating portion (83b) is connected to the front end of the frame portion (83a) via a rotating shaft (93) so as to be swingable left and right, and the engaging shaft (92) and the operating portion (83b) of these frame portions (83a) are connected. A fulcrum spring (95) centered on the rotation shaft (93) is stretched between the shafts (94), and the operation portion (83b) is swung rightward about the rotation shaft (93). Thus, when the engagement shaft (92) is detached from the engagement fitting (91), the adjustment lever (83) can be manually operated. In addition, a lever positioning notch (88b) is formed on one side of the lever guide hole (88a) of the mounting base (88), and a positioning plate fixed to the operating portion (83b) when the adjustment lever (83) is manually operated. (83c) is engaged with the notch (88b) to fix the position of the adjustment lever (83).
[0021]
Further, the operating portion (83b) of the adjusting lever (83) is formed in a short size, and is compactly disposed in a cover (96) which is a case that is openably and closably fixed to the motor mounting base (88). The mounting base (88) is provided with a planting depth sensor (98) which is a potentiometer type feedback sensor for detecting the movement position of the sensor pin (97) of the frame portion (83a) through the actuator (98a). The position is detected. The moving element (90) is provided with a guide roller (90a) to be inserted into the moving guide hole (88c) of the mounting base (88), so that the moving element (90) rotates together with the screw shaft (89). It is preventing.
[0022]
When the planting depth is changed around the fulcrum shaft (62) by the planting depth motor (84) or the adjusting lever (83), the vertical displacement position of the pitching fulcrum shaft (60) portion and the front link shaft (66) ( 69) The vertical change position of the portion is substantially the same, and the output of the lift sensor (79) is not changed even if the planting depth is changed.
[0023]
On the other hand, an engine rotation sensor (99) for detecting the number of rotations from the engine (2) transmitted through the transmission shaft (58) to the input shaft portion of the transmission case (56), and the front axle case (5 ) Is provided with a vehicle speed sensor (100) for detecting the traveling output from the transmission case (4) transmitted through the transmission shaft (59), and the vehicle body cover (12) is substantially at the rear center. A pendulum-type or capacitance-type tilt sensor (101) for detecting the front / rear tilt of the car (1) is provided.
[0024]
As shown in FIGS. 5 and 14, a potentiometer type lift position sensor (103) is installed on the left body frame (3) via a sensor mounting plate (102), and the piston rod (28a) of the lift cylinder (28). A detection plate (105) is fixed to a lift arm (104) that connects the tip and the lower link (26), and the detection shaft (106a) at the tip of the detection arm (106) of the position sensor (103) is used as a detection plate. The elevating position is detected by the sensor (103) when the planting portion (15) is moved up and down by the elevating cylinder (28).
[0025]
6, 7, and 9, a planting depth changing member constituted by the adjusting lever (83), the planting depth motor (84), the screw shaft (89), the mover (90), etc. The depth changing unit (107) is arranged between the center float (34) and the right side float (35) in a plan view ( FIG. 6 ) and in each float (60) centered on a fulcrum shaft (60) in a side view ( FIG. 9 ) . 34) In the vertical swing range of (35), it is arranged at a position where it wraps with each float (34) (35), and the planting depth changing unit (107) is compact between the center and side floats (34) (35). In addition, the floats (34) and (35) are arranged close to the machine without interfering with the planting depth changing unit (107) so that the front and rear balance of the planting part (15) is good. ing.
[0026]
Further, the planting depth changing unit (107) is arranged at the lowest position between the floats (34) and (35) without interfering with the center and the side floats (34) and (35). The planting depth changing unit (107) is placed at a position where it wraps with the rear wheel (8) behind the rear wheel (8) in plan view. Even when it is arranged, the adjusting lever (83) is short so that it does not interfere with the rear wheel (8) in a side view, and the planting depth changing unit (107) is as close as possible to the rear wheel (8), The unit (107) is configured to improve the degree of freedom in arrangement and the front-rear balance of the airframe and to be compact in configuration.
[0027]
Furthermore, a planting depth changing unit (107) is compactly arranged below the lateral feed shaft (108) from the central planting drive case (20a) for laterally feeding the seedling mounting table (16), and a planting unit (15) is configured to lower the center of gravity to improve the left-right balance of the aircraft.
[0028]
Further, as shown in FIG. 9, the planting depth changing unit (107) or the motor (84) from the adjustment fulcrum shaft (62) to the length (b) from the adjustment fulcrum shaft (62) to the pitching fulcrum shaft (60). ) The length (a) to the front end is set within approximately twice (a ≦ 2b), the planting depth changing unit (107) is moved as close as possible to the machine side, and the center of gravity is moved forward, The front-rear balance is good.
[0029]
As shown in FIGS. 10 and 11, a bracket (110) on the inner bottom surface of the cover (96) is rotatably connected to a bracket (109) on the lower front surface of the motor mount (88) via a shaft (111). The cover (96) is attached to the motor mount (88) so that it can be opened and closed, and the adjustment lever (83) is provided in the closed cover (96) during automatic switching. Further, an oblong lever confirmation hole (112) as a confirmation portion is opened at the cover (96) position corresponding to the tip of the adjustment lever (83) housed in the cover (96), and the cover (96) The planting depth position of the adjustment lever (83) housed inside is visually confirmed through the confirmation hole (112) from the outside of the cover (96), so that the planting depth during automatic operation can be easily confirmed. is doing.
[0030]
Thus, in the automatic planting depth adjustment by the planting depth motor (84), the planting depth can be reduced by the stepless movement of the mover (90) coupled to the screw shaft (89). The planting depth is detected by the planting depth operation switch for driving the planting depth motor (84) and the sensor (98) while performing fine adjustment in stages to make the planting depth adjustment highly accurate. By disposing the display panel in front of the driver's seat (13) or the like, it is possible to easily change or confirm the planting depth from the position of the driver's seat (13). In this case, the planting depth is detected by the sensor (98) from the position of the adjustment lever (83) that directly changes the planting depth, so that it is always accurate without being affected by the assembly error of the parts. Planting depth is detected.
[0031]
Further, the adjustment lever (83) performs automatic and manual switching by engaging and disengaging the engagement shaft (92) with the engagement fitting (91) with respect to the vertical operation direction during manual adjustment of the planting depth. The engagement shaft (92) is disengaged from the automatic operation in which the engagement metal fitting (91) and the engagement shaft (92) are engaged by making the planting depth operation direction orthogonal to the automatic and manual switching directions. Even when switched to manual operation, the planting depth is kept constant without changing, so even if an electrical failure or malfunction occurs during the automatic adjustment of the planting depth, the operation is not stopped. The manual operation can be continued with the planting depth kept constant. Furthermore, it is possible to easily check the vertical movement of the floats (34) and (35) by manually operating the adjustment lever (83) without carrying out operations such as key switches and battery charging during maintenance of the aircraft. Convenient for maintenance and inspections.
[0032]
In addition, since the automatic and manual switching directions of the adjustment lever (83) and the operation direction of manual planting depth adjustment are different by approximately 90 degrees, erroneous operation is prevented and the operational feeling is improved, and at the time of manual switching. The planting depth can be maintained constant by reliably engaging the positioning plate (83c) with the notch (88b) at the end of the switching direction.
[0033]
Further, during normal automatic operation, the adjustment lever (83), the motor (84), etc. can be housed in the cover (96) to improve their performance and durability and prevent malfunctions. Check the planting depth position of the adjustment lever (83) from the outside of the cover (96) through the confirmation hole (112) without using a special planting depth indicator. It can be done easily.
[0034]
Furthermore, by inserting the guide roller (90a) of the moving element (90) into the moving guide hole (88c) of the mounting base (88), the movement of the moving element (90) along the screw shaft (90) is smooth. Thus, the driving load of the motor (84) can be reduced, the motor (84) can be reduced in size and weight, and the front-rear balance can be improved.
[0035]
Thus, in the planting depth adjustment mechanism in which the automatic and manual switching is performed by the adjustment lever (83), the sensor (98) for connecting the detection of the position of the lever (83) to the lever (83) as in this embodiment. In the case of a configuration using only the control mechanism, when the lever (83) is moved and operated manually, the planting depth motor (84) is driven by the output from the sensor (98) and the float (34) (35) or the like is damaged. There is a bug that leads to
[0036]
Therefore, as shown in FIG. 13, the lock confirmation sensor (113) for detecting the engagement between the engagement fitting (91) and the engagement shaft (92) is provided on either the lever (83) or the mover (90) side. When the engagement shaft (92) is disengaged from the engagement fitting (91) by manual switching, the planting depth motor (98) outputs the planting depth sensor (98) with a signal from the lock confirmation sensor (113). 84) is stopped, and the planting depth adjustment by the motor (84) is stopped.
[0037]
Further, the one shown in FIG. 15 is provided with the planting depth sensor (98) on the moving element (90) side, and only when the moving element (90) is moved by the planting depth motor (84) during automatic operation. 98) is operated, and the planting depth motor (84) is driven until the output value of the sensor (98) matches the target value. The sensor pin (97) is fixed to the moving element (90). And a planting depth sensor (98) for detecting the moving position of the moving element (90) by the actuator (98a) to be brought into contact with the pin (97) is provided on the mounting base (88). During manual operation of the adjustment lever (83) with the engagement shaft (92) detached, the connection relationship with the planting depth sensor (98) is cut off and the planting depth adjustment by the planting depth motor (84) is stopped. It is.
[0038]
【The invention's effect】
As can be seen from the above embodiments, the invention according to claim 1 includes a planting part (15) connected to the rear side of the traveling vehicle (1) via a link mechanism (27) so as to be movable up and down, and planting. A planting depth adjusting member (83) for changing the support height of the floats (34) and (35) provided in the section (15), and a planting depth adjusting member (83) connected to the planting depth adjusting member (83) via an interlocking member (90). An adjustment actuating member (89) that adjusts the planting depth steplessly and a planting depth motor (84) that actuates the adjusting actuating member (89) are provided via the adjustment actuating member by the planting depth motor. In the rice transplanter configured to change the seedling planting depth by operating the planting depth adjusting member, the motor mounting base (88) for arranging the planting depth motor (84), and at least the planting depth adjustment A cover (96) covering the member (83) and the planting depth motor (84), and an operation Has a planting depth confirmation part (112) that can visually recognize the planting depth operation position of the planting depth adjusting member (83) from the front of the cover (96), and a planting depth motor (84) on the upper surface side of the motor mounting base (88). ), And the cover (96) is connected to the motor mounting base (88) via the shaft (111) so that the cover (96) can be opened and closed, and at least the front and upper side of the planting motor (84) can be opened and closed by the cover (96). Therefore, the planting depth of the planting claw (17) can be adjusted steplessly by adjusting the planting depth with high accuracy. The cover (96) protects the planting depth adjusting member (83) and the planting depth motor (84), maintains the performance of the planting depth motor (84), and prevents malfunction of the planting depth motor (84). The operator can check the current planting depth of the planting claw (17) from the front outer side of the cover (96) by the planting depth confirmation unit (112).
[0039]
[0040]
[0041]
[0042]
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter.
FIG. 2 is an overall plan view of a rice transplanter.
FIG. 3 is a side view of a traveling vehicle body.
FIG. 4 is an explanatory plan view of a traveling vehicle body.
FIG. 5 is an explanatory side view of a planting part.
FIG. 6 is an explanatory plan view of a float part.
FIG. 7 is an explanatory plan view of a center float unit.
FIG. 8 is an explanatory side view of a center float portion.
FIG. 9 is a side view of a planting depth adjusting unit.
FIG. 10 is a side view illustrating a planting depth adjusting unit.
FIG. 11 is an explanatory front view of a planting depth adjusting unit.
FIG. 12 is an explanatory plan view of a planting depth adjusting unit.
FIG. 13 is an explanatory plan view of a planting depth sensor unit.
FIG. 14 is an explanatory diagram of attachment of a lift position sensor unit.
FIG. 15 is an explanatory diagram of another implementation structure of the planting depth sensor unit.
[Explanation of symbols]
(1) Traveling vehicle (15) Planting part
(27) Link mechanism (34) (35) Float (83) Planting depth adjusting lever (planting depth adjusting member)
(84) Planting motor
(88) Motor mount (89) Screw shaft (Adjustment actuating member)
(90) Mover (interlocking member)
(96) Cover
(111) shaft (112) confirmation hole (confirmation part)

Claims (1)

走行車の後側にリンク機構を介して昇降可能に連結された植付部と、前記植付部に設けたフロートの支持高さを変更する植深調節部材と、前記植深調節部材に連動部材を介して連結して苗植付深さを無段階に調節する調節作動部材と、該調節作動部材を作動させる植深モータとを備え、前記植深モータによって前記調節作動部材を介して前記植深調節部材が作動されて、苗植付深さが変更されるように構成してなる田植機において、
前記植深モータを配置するモータ取付台と、少なくとも前記植深調節部材と前記植深モータの上方を覆うカバーと、オペレータが前記カバーの前方から前記植深調節部材の植深操作位置を視認可能な植深確認部とを備え、
前記モータ取付台の上面側に前記植深モータを固着し、前記モータ取付台に軸を介して前記カバーを開閉可能に連結し、前記植深モータの少なくとも前方及び上方が前記カバーによって開閉可能に覆われるように構成したことを特徴とする田植機。
A planting part connected to the rear side of the traveling vehicle through a link mechanism so as to be movable up and down, a planting depth adjusting member for changing the support height of the float provided in the planting part, and interlocking with the planting depth adjusting member An adjustment actuating member that is connected via a member to adjust the seedling planting depth steplessly and a planting depth motor that actuates the adjustment actuating member; In the rice transplanter configured so that the planting depth adjustment member is activated and the seedling planting depth is changed ,
A motor mounting base on which the planting depth motor is arranged, a cover that covers at least the planting depth adjustment member and the planting depth motor, and an operator can visually recognize the planting depth operation position of the planting depth adjustment member from the front of the cover With a deep planting confirmation section,
The planting depth motor is fixed to the upper surface side of the motor mounting base, the cover is connected to the motor mounting base via an axis so that the cover can be opened and closed, and at least the front and the upper side of the planting motor can be opened and closed by the cover. Rice transplanter characterized by being configured to be covered .
JP31994098A 1998-10-22 1998-10-22 Rice transplanter Expired - Fee Related JP3882975B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31994098A JP3882975B2 (en) 1998-10-22 1998-10-22 Rice transplanter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31994098A JP3882975B2 (en) 1998-10-22 1998-10-22 Rice transplanter

Publications (2)

Publication Number Publication Date
JP2000125624A JP2000125624A (en) 2000-05-09
JP3882975B2 true JP3882975B2 (en) 2007-02-21

Family

ID=18115949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31994098A Expired - Fee Related JP3882975B2 (en) 1998-10-22 1998-10-22 Rice transplanter

Country Status (1)

Country Link
JP (1) JP3882975B2 (en)

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