【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】
【従来の技術】
従来、特開平5−276818号公報に示す如く、走行車にミッドマウント型の施肥機を取付ける技術があった。
【0003】
【発明が解決しようとする課題】
前記従来技術は、肥料繰出ケースを一定高さに固定した場合、肥料繰出ケースに残留する肥料を取出す作業またはメンテナンス作業が面倒になる。また、肥料繰出ケースを昇降自在に設けることにより、該ケースを上昇させて残留肥料を容易に取出すことができる。しかし乍ら、前記ケースを上昇位置または下降位置に固定させるロックレバーを前側に設けた場合、運転席側からロックレバーを容易に操作できるが、作業中に前後に振動し易く、施肥量が不均一になったり、肥料搬送ホースが外れる不具合がある。
【0004】
【課題を解決するための手段】
然るに、本発明は、走行車(1)の後側にリンク機構(27)を介して植付部(15)を昇降自在に装設させると共に、肥料を入れる施肥ホッパ(46)と、肥料を繰出す繰出ケース(47)と、施肥ホッパ(46)と繰出ケース(47)を支持している昇降フレーム(58)と、植付部(15)のフロート(34)の施肥シュート(48)に肥料を搬送する搬送ホース(49)とを設ける施肥機(36)を走行車(1)後部に搭載し、走行車(1)後部の左右に設ける前後昇降レール(56,56)を介して前記施肥ホッパ(46)と繰出ケース(47)を昇降レール(56)の下降位置に固定させて施肥作業を行う一方、昇降レール(56)の上昇位置に前記施肥ホッパ(46)と繰出ケース(47)を固定させて施肥ホッパ(46)の残留肥料を受取る田植機において、前側の昇降レール(56)に、前記施肥ホッパ(46)と繰出ケース(47)を下降位置及び上昇位置に固定支持させるため、昇降フレーム(58)側のロックレバー(63)のフックアーム(137)が係入する係合孔(65、66)を設けると共に、後側の昇降レール(56)に、前記施肥ホッパ(46)と繰出ケース(47)を下降位置に固定支持させるため、昇降フレーム(58)側の係合孔(58a)に係入するロック部材(64)を設けたもので、肥料繰出ケースの前側と後側を前記ロックレバーとロック部材によって係止させ得、作業中に肥料繰出ケースが前後に振動するのを容易に防止し得、施肥量が不均一になったり、肥料搬送ホースが外れる等の不具合をなくし得ると共に、肥料繰出ケース昇降構造の耐久性向上などを容易に図り得るものである。
【0005】
【0006】
【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は昇降レール部の側面説明図、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、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)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。
【0009】
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、肥料を入れる施肥ホッパ(46)と、肥料を定量供給する肥料繰出ケース(47)と、フロート(34)(35)の側条施肥シュート(48)にフレキシブル形搬送ホース(49)を介して肥料を排出させる送風機(50)と、円筒形のエアタンク(51)とを、前記施肥機(36)に備えると共に、エアタンク(51)右側端に送風機(50)を取付け、6条分の6組の肥料繰出ケース(47)…をエアタンク(51)上側に配設させている。
【0013】
さらに、図8、図9、図10、図11、図12に示す如く、前記車体フレーム(3)後端部で水平フレーム(41)両側に左右ベースフレーム(52)(52)を取付け、前後方向に略水平に横架させる前記左右ベースフレーム(52)(52)にブラケット(54)(54)を介してエアタンク(51)をボルト止め固定させるもので、ベースフレーム(52)後端部と車体フレーム(3)間にサイドステー(55)を連結させ、略水平に横架させるベースフレーム(52)前後側に前後昇降レール(56)…を立設させ、前後一組左右二対の4本の該昇降レール(56)(56)(56)(56)に対して施肥機(36)を昇降自在に取付けると共に、左右一対の2本のガススプリング(57)(57)によって昇降自在に施肥機(36)を取付け、車体フレーム(3)後端部に配置させるリヤアクスルケース(7)に施肥機(36)重量を支持させるもので、図13にも示す如く、前後昇降レール(56)(56)に対向させる軸受板(58)を設け、前記レール(56)に転動自在に嵌込むベアリングローラ(59)…を軸受板(58)に回転自在に軸支させ、前後2本のレール(56)(56)を左右対称に2組設け、1本のレール(56)に対して上下2個のローラ(59)(59)を取付け、左右一対の軸受板(58)(58)を4本のレール(56)と8個のローラ(59)…によってベースフレーム(52)に昇降自在に支持させている。
【0014】
また、前記ガススプリング(57)の下端を前記車体フレーム(3)に連結させ、前記軸受板(58)にガススプリング(57)上端を連結させ、前記レール(56)とガススプリング(57)を略平行に立設させると共に、施肥機(36)の前後幅方向の重心位置にガススプリング(57)を連結させるもので、施肥機(36)の重量と略等しいかまたは若干小さい伸張力をガススプリング(57)が有するように構成している。
【0015】
さらに、図12、図14、図15、図16に示す如く、左右の軸受板(58)(58)を丸パイプ形の前フレーム(60)によって一体固定させ、施肥機(36)を持上げるときに作業者が握る取手(61)を前記前フレーム(60)に溶接固定させ、左右の前記軸受板(58)(58)に支軸(62)(62)を介して左右ロックレバー(63)(63)を回転自在に軸支させ、前側の左右昇降レール(56)(56)に左右ロックレバー(63)(63)を介して左右軸受板(58)(58)前部を係止させると共に、後側の左右昇降レール(56)(56)に左右ロックピン(64)(64)を摺動自在に取付け、図13に示す軸受板(58)の係合孔(58a)にロックピン(64)を係脱自在に係入させ、後側の左右昇降レール(56)(56)に左右軸受板(56)(56)後部を左右ロックピン(64)(64)を介して係止させ、軸受板(56)の前部と後部を前後の昇降レール(56)(56)にロックレバー(63)とロックピン(64)により固定させる。また、前記前側の昇降レール(56)に上下係合孔(65)(66)を形成させ、各係合孔(65)(66)にロックレバー(63)を係入させて施肥機(36)を上昇位置または下降位置で固定支持させるもので、ロックレバー(63)を前記取手(61)の下側に延出させ、運転席(13)側に突設させる取手(61)を作業者が握り乍らロックレバー(63)を操作し、ロックレバー(63)を係合孔(65)(66)から離脱させることができるように構成している。
【0016】
また、前記前フレーム(60)にケース前ブラケット(67)を溶接固定させ、該ケース前ブラケット(67)に前記繰出ケース(47)前側をボルト止め固定させるもので、1ユニットとして構成する2条分の繰出ケース(47)(47)を左右の昇降レール(56)(56)間に配設させ、昇降レール(56)(56)の機外側に2条分の繰出ケース(47)(47)を夫々配設させ、2条1組として3ユニットの繰出ケース(47)…を左右に並設させている。
【0017】
さらに、図17、図18、図19に示す如く、前記繰出ケース(47)の上面前側の取入口(68)に前記ホッパ(46)の下部出口(69)を嵌着させると共に、前記繰出ケース(47)前面下側に取出口(70)を形成し、着脱自在なキャップ(71)によって取出口(70)を閉塞している。前記キャップ(71)を取外して取出口(70)を開放し、タンク(46)内部の肥料を前側下方に流下させるもので、このときに施肥機(36)を昇降レール(56)の上昇位置に支持させ、取出口(70)と下方のエアタンク(51)の間隔を拡大させ、肥料を入れる容器を前記取出口(70)下方に容易に差し入れることができ、残留肥料の取出しを容易に行えるように構成している。
【0018】
また、前記繰出ケース(47)下面に閉塞レバー(72)を介して底蓋(73)を着脱自在に固定させると共に、硬質合成樹脂製の前記底蓋(73)下面に出口(74)を形成するもので、エアタンク(51)に前端部を嵌着させる軟質合成樹脂製の接合パイプ(75)を備え、該パイプ(75)後端に硬質合成樹脂製のジョイント(76)前端を着脱自在に嵌着させると共に、前記ジョイント(76)後端に前記搬送ホース(49)を嵌着させ、前記送風機(50)の送風をエアタンク(51)から各パイプ(75)…及びホース(49)に吹出させ、底蓋(73)の出口(74)からジョイント(76)中間に落下する肥料を搬送ホース(49)に移動させるもので、T字形フランジを形成する前記ジョイント(76)中間に入口(77)を上向き開放に形成し、底蓋(73)の出口(74)に嵌合キャップ(78)を固定させ、該キャップ(78)を前記入口(77)に着脱自在に嵌着させ、出口(74)を入口(77)に接続させると共に、前記エアタンク(51)に取付板(79)を一体固定させ、取付板(79)に前記ジョイント(76)をボルト止め固定させている。
【0019】
また、取入口(80)及び吹出口(81)を有する入口板(82)と、同一円周上に略四角形の複数の繰出口(83)…を有する繰出板(84)と、排出口(85)を有する出口板(86)を備え、略円形平板製の前記各板(82)(84)(86)を繰出ケース(47)と底蓋(73)の間に多層状に配設させると共に、繰出ケース(47)に繰出軸(87)を略垂直に回転自在に軸支させ、各板(82)(84)(86)の中央部に繰出軸(87)下端側を貫通させ、繰出軸(87)下端にゴム輪(88)を着脱自在に係止させ、各板(82)(84)(86)を下方に抜出し自在に繰出軸(87)に支持させ、かつ閉塞レバー(72)によって各板(82)(84)(86)を繰出ケース(47)と底蓋(73)間に弾圧させるもので、入口板(82)と出口板(86)を繰出ケース(47)に係止させ、各板(82)(86)に対して繰出軸(87)を遊転させると共に、繰出板(84)を繰出軸(87)に係合軸支させ、繰出軸(87)によって繰出板(84)を強制的に回転させ、取入口(80)から繰出口(83)に入った肥料を排出口(85)に移動させて出口(74)方向に落下させるように構成している。
【0020】
また、前記取入口(80)端部で繰出口(83)上面の余分な肥料を取除くブラシ(89)を備え、高さ調節する撮(90)を介して前記ブラシ(89)を繰出ケース(47)に高さ調節自在に取付け、繰出板(84)上面に対するブラシ(89)下端の高さ調節を繰出ケース(47)外部から行い、繰出口(83)の肥料送出量を調節するように構成している。
【0021】
また、前記入口板(82)の吹出口(81)に対向させる圧風取入口(91)を繰出ケース(47)に形成し、前記エアタンク(51)の中空部と前記圧風取入口(91)を分流パイプ(92)によって連通させ、前記パイプ(92)及び取入口(91)を介して送風機(50)及びエアタンク(51)からの送風を吹出口(81)に供給し、排出口(85)位置に移動した繰出口(83)に吹出口(81)から送風し、該送風によって繰出口(83)の肥料を下方に強制的に落下させ、粒形の肥料またはこの粉が繰出口(83)内に残るのを防ぐように構成している。
【0022】
さらに、図11、図16などに示す如く、前記エンジン(2)出力を植付部(15)に伝達させるPTO軸(93)をギヤ変速ケース(4)から後方に延出させると共に、前記左支柱(40)に軸受筒(94)を溶接固定させ、軸受筒(94)の施肥入力軸(95)を前記PTO軸(93)中間にチェン(96)を介して連動連結させる。前記施肥入力軸(95)後端部にクランク板(97)をボールロック構造により着脱自在に固定させる。また、前記軸受板(58)及びケース後ブラケット(98)を一体固定させる四角パイプ形後面フレーム(99)を備え、エアタンク(51)及び前フレーム(60)と略平行に後面フレーム(99)を横架させ、ケース後ブラケット(98)に前記繰出ケース(47)後側をボルト止め固定させる。
【0023】
また、前記左の軸受板(58)にブラケット(100)及び軸(101)を介して繰出量調節レバー(102)を軸支させると共に、左の軸受板(58)に支軸(103)を介して調節リンク(104)及び支点リンク(105)を設け、前記レバー(102)のネジ部(106)に調節リンク(104)を連結させ、支点リンク(105)に調節支点(107)を取付け、該支点(107)に駆動アーム(108)を軸支させる。そして、運転席(13)方向に突出させる前記レバー(102)の回転操作によってネジ部(106)を回転させることにより、前記各リンク(104)(105)が一体的に回転し、前記調節支点(107)位置を変更させるもので、運転席(13)の作業者によって前記レバー(102)の繰出量調節操作が行えるように構成している。
【0024】
また、前記後面フレーム(99)に軸受板(109)を介して繰出駆動軸(110)を回転自在に軸支させ、該駆動軸(110)に揺動アーム(111)を固定させ、前記駆動アーム(108)に長さ調節自在な伸縮ロッド(112)一端側を連結させ、かつ前記揺動アーム(111)に前記伸縮ロッド(112)の他端側を連結させると共に、前記クランク板(97)を駆動アーム(108)に入力ロッド(113)を介して連結させ、植付駆動用のPTO軸(93)から駆動アーム(108)及び入力ロッド(113)を介して繰出駆動軸(110)に駆動力を伝え、図示しない植付クラッチの入切によって植付部(15)と施肥機(36)を同時に作動させたり停止させる操作を行い、また施肥入力軸(95)に対してクランク板(97)を取外して駆動部を切離して施肥機(36)の上昇部を持上げる操作を行うもので、前記レバー(102)操作により調節支点(107)を位置変更させ、伸縮ロッド(112)の往復ストロークを無段階に変更させて肥料繰出量の無段調節を行うように構成している。
【0025】
さらに、図10に示す如く、前記後面フレーム(99)に連れ回り防止一方向クラッチ(114)を介してクラッチ軸(116)を軸支させ、該クラッチ軸(116)に一方向クラッチ(117)を介して入力リンク(118)を設けると共に、前記繰出駆動軸(109)に揺動リンク(119)を固定させ、該リンク(119)を前記入力リンク(118)に連係ロッド(120)を介して連結させ、入力リンク(118)を揺動させてクラッチ軸(116)を一方向に間欠的に回転させるように構成している。
【0026】
また、前記繰出ケース(47)に条止めクラッチケース(121)を固定させると共に、前記繰出軸(87)上端側にベベルギヤ(122)(123)を介して入力軸(124)を常時連結させるもので、入力軸(124)を前記クラッチ軸(116)に継断自在に連結させる条止めクラッチ(図示省略)を前記クラッチケース(121)に内設させると共に、前記ケース(121)の条止めクラッチを継断操作するクラッチレバー(126)とクラッチアーム(127)を前記クラッチケース(121)の前後に振分け配設させ、前記植付部(15)の苗載台(16)上側背面部に設ける植付け条止め用ユニットクラッチレバー(128)に、後面フレーム(98)のアウタ受(129)により張設させる条止めワイヤ(130)を介して、前記クラッチアーム(127)を連結させる。そして、前記植付け条止めユニットクラッチレバー(128)操作によって6条植え用の各植付爪(17)…のいずれかを停止させたとき、停止させた植付爪(17)に対応する前記ケース(121)の条止めクラッチを切断動作させて施肥動作を中止させ、植付爪(17)によって苗を植付ける条にだけ施肥を行うもので、例えば左側と中央の4条の苗植付けを行うとき、左側と中央の4条の繰出ケース(47)…から施肥を行うと共に、作業者によってクラッチレバー(126)を操作して前記ケース(121)の条止めクラッチを切断させることにより、6条の繰出ケース(47)…のいずれかまたは全部を任意に選択して、苗植付けとは関係なく、施肥を中止させることができるように構成している。
【0027】
さらに、図8、図9、図10、図12に示す如く、前側の左右の昇降レール(56)(56)上端部に左右支脚(131)(131)下端部を固定させ、左右支脚(131)(131)上端部の間のパイプフレーム(132)両側を固定させ、中央2条分の施肥ホッパ(46)(46)前側にパイプフレーム(132)を横架させるもので、パイプフレーム(132)の連結によって左右昇降レール(56)(56)を補強すると共に、図6のように運転席(13)後側の車体カバー(12)後部中央上面に補充用の肥料袋(134)を載せたとき、肥料袋(134)の前方傾倒を運転席(13)によって防ぎ、略平行に左右に延設させた上方のパイプフレーム(132)と下方の取手(61)によって肥料袋(134)の後方傾倒を防ぐ。また、1ユニット2条分の搬送ホース(49)(49)下側に丸棒形ホースガイド体(133)の中間を延設させ、前記ホースガイド体(133)両端部を搬送ホース(49)上方に折曲げて取付板(79)(79)側面に固定させ、ジョイント(76)連結部近くの搬送ホース(49)の下方向及び左右方向の折曲がりをホースガイド体(133)によって制限し、ジョイント(76)延長方向に搬送ホース(49)連結端部を延設支持させ、搬送ホース(49)の折曲がりによって該ホース(49)連結端部がジョイント(76)から外れるのを防いでいる。
【0028】
さらに、図13、図14、図15に示す如く、中央2条分の肥料繰出ケース(47)(47)取付位置外側で前フレーム(60)と後面フレーム(99)に左右の軸受板(58)(58)を溶接固定させると共に、前フレーム(60)と後面フレーム(99)の両端部を左右のサイドフレーム(135)(135)によって一体固定させ、両側2条分の肥料繰出ケース(47)(47)を軸受板(58)とサイドフレーム(135)間の前フレーム(60)及び後面フレーム(99)に取付けるもので、四角枠形の各フレーム(60)(99)(135)を軸受板(58)によって左右方向に三等分に区切り、前後のフレーム(60)(99)間に6条分の肥料繰出ケース(47)を掛け渡し支持させる。
【0029】
さらに、図1、図20、図21に示す如く、前記昇降レール(56)の係合孔(65)(66)にバネ(136)によって係入保持させるフックアーム(137)を前記支軸(62)に連設させ、前記ロックレバー(63)に支軸(62)を介してフックアーム(137)を一体固定させ、ロックレバー(63)の上方回転操作によってバネ(136)に抗してフックアーム(137)が係合孔(65)(66)から抜出すように構成している。また、後側の昇降レール(56)背面の補強フレーム(138)にガイドフレーム(139)を介して前記ロックピン(64)を左右方向に摺動自在に取付けると共に、前記軸受板(58)の係合孔(58a)にロックピン(64)を係入保持させるバネ(140)と、ロックピン(64)に一体固定させる解除レバー(141)を設け、後方に突出させる前記解除レバー(141)をガイドフレーム(139)のノッチ(142)に係脱自在に係入させ、バネ(140)に抗して係合孔(58a)からロックピン(64)を抜出させた位置に支持させる。
【0030】
そして、前記フックアーム(137)を下係合孔(66)に係入させ、肥料繰出ケース(47)前側の軸受板(58)前部を前記ロックレバー(63)及びフックアーム(137)を介して前側の昇降レール(56)に係止させ、また肥料繰出ケース(47)後側の軸受板(58)後部をロックピン(64)を介して後側の昇降レール(56)に係止させ、肥料繰出ケース(47)を下降位置に固定させ、田植作業と平行して施肥作業を行わせると共に、前記フックアーム(137)を上係合孔(65)に係入させ、フックアーム(137)を介して軸受板(58)前部を前側の昇降レール(56)に係止させ、肥料繰出ケース(47)を上昇位置に固定させ、肥料繰出ケース(47)内部に残留している肥料を取出口(70)から排出させる残留肥料取出し作業または底蓋(73)を取外して繰出板(84)などを分解解除するメンテナンス作業などを行うように構成している。
【0031】
上記から明らかなように、肥料を入れる施肥ホッパ(46)と、該ホッパ(46)の肥料を送出させる多条用の肥料繰出ケース(47)と、前記ケース(47)の肥料送出部に送風を供給するエアタンク(51)を備えると共に、前記肥料繰出ケース(47)を昇降自在に取付ける昇降レール(56)と、肥料繰出ケース(47)の前側で昇降レール(56)に係脱自在に係止させるロックレバー(63)と、前記肥料繰出ケース(47)の後側で該ケース(47)を昇降レール(56)に係止させる後側ロック部材であるロックピン(64)を設け、肥料繰出ケース(47)の前側と後側を前記ロックレバー(62)とロックピン(64)によって係止させ、作業中に肥料繰出ケース(47)が前後に振動するのを防ぐと共に、前記肥料繰出ケース(47)を昇降レール(56)に昇降自在に取付ける左右昇降フレームである軸受板(58)(58)と、左右軸受板(58)(58)間に連結させるリフトフレームである取手(61)と、軸受板(58)に取付けるロックレバー(63)を、作業者が手で同時に握れる範囲に近接させて配設させ、左右軸受板(58)の連結を前記取手(61)によって補強して、左右軸受板(58)の取付け強度を向上させ、また前記取手(61)とロックレバー(63)を同時に握ることによって軸受板(58)の昇降操作を容易に行え、運転席(13)側から後向き姿勢の作業者が両手に左右のロックレバー(63)と取手(61)を握って持上げたり押下げることにより、施肥ホッパ(46)及び肥料繰出ケース(47)が昇降するように構成している。
【0032】
さらに、図16、図22に示す如く、前記クランク板(97)に筒軸(143)を溶接固定させ、ベアリング(144)を介して軸支させる施肥入力軸(95)後端を前記筒軸(143)の内孔に嵌入させると共に、施肥入力軸(95)に弾圧係合させるロックボール(145)を筒軸(143)に設け、筒軸(143)を施肥入力軸(95)にロックボール(145)を介して着脱自在に係合軸支させ、施肥入力軸(95)に対して筒軸(143)を工具なしで着脱させ、上記のようにロックピン(64)の係合を解除するときに施肥入力軸(95)から筒軸(143)を取外し、取手(61)及びロックレバー(63)を握って肥料繰出ケース(47)を上昇させる一方、肥料繰出ケース(47)を下降させたとき、ロックピン(64)の係合操作を行い、また施肥入力軸(95)に筒軸(143)を取付け、施肥駆動を行わせるもので、昇降自在に取付ける施肥繰出ケース(47)に施肥駆動力を伝達させる駆動ロッドである入力ロッド(113)を設けると共に、本機側の施肥入力軸(95)に着脱自在なジョイント部材である筒軸(143)を介して前記入力ロッド(113)を連結させ、筒軸(143)を工具なしで着脱させる構造にすることにより、施肥入力軸(95)に対して入力ロッド(113)側の部品を残すことなく分離させ、肥料繰出ケース(47)昇降後に入力ロッド(113)が切離された状態で誤動作させても、施肥入力軸(95)が空回転するだけで、施肥入力軸(95)の空回転による部品破損などを不具合をなくすように構成している。
【0033】
【発明の効果】
以上実施例から明らかなように本発明は、走行車(1)の後側にリンク機構(27)を介して植付部(15)を昇降自在に装設させると共に、肥料を入れる施肥ホッパ(46)と、肥料を繰出す繰出ケース(47)と、施肥ホッパ(46)と繰出ケース(47)を支持している昇降フレーム(58)と、植付部(15)のフロート(34)の施肥シュート(48)に肥料を搬送する搬送ホース(49)とを設ける施肥機(36)を走行車(1)後部に搭載し、走行車(1)後部の左右に設ける前後昇降レール(56,56)を介して前記施肥ホッパ(46)と繰出ケース(47)を昇降レール(56)の下降位置に固定させて施肥作業を行う一方、昇降レール(56)の上昇位置に前記施肥ホッパ(46)と繰出ケース(47)を固定させて施肥ホッパ(46)の残留肥料を受取る田植機において、前側の昇降レール(56)に、前記施肥ホッパ(46)と繰出ケース(47)を下降位置及び上昇位置に固定支持させるため、昇降フレーム(58)側のロックレバー(63)のフックアーム(137)が係入する係合孔(65、66)を設けると共に、後側の昇降レール(56)に、前記施肥ホッパ(46)と繰出ケース(47)を下降位置に固定支持させるため、昇降フレーム(58)側の係合孔(58a)に係入するロック部材(64)を設けたもので、肥料繰出ケース(47)の前側と後側を前記ロックレバー(62)とロック部材(64)によって係止させることができ、作業中に肥料繰出ケース(47)が前後に振動するのを容易に防止でき、施肥量が不均一になったり、肥料搬送ホース(49)が外れる等の不具合をなくすことができると共に、肥料繰出ケース(47)昇降構造の耐久性向上などを容易に図ることができるものである。
【0034】
【0035】
【図面の簡単な説明】
【図1】昇降レール部の側面説明図。
【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】施肥機部の平面図。
【図7】同背面図。
【図8】昇降レール部側面図。
【図9】肥料繰出ケース部の側面図。
【図10】肥料繰出ケース部の平面図。
【図11】ベースフレーム部の背面図。
【図12】肥料繰出ケース部の背面図。
【図13】軸受板部の側面図。
【図14】取手部の平面図。
【図15】同背面図。
【図16】同側面図。
【図17】肥料繰出ケースの断面側面図。
【図18】同断面背面図。
【図19】同断面平面図。
【図20】ロックレバー部の背面説明図。
【図21】ロックピン部の背面説明図。
【図22】施肥入力軸部の側面説明図。
【符号の説明】
(46) 施肥ホッパ
(47) 肥料繰出ケース
(56) 昇降レール
(58) 軸受板(昇降フレーム)
(61) 取手(リフトフレーム)
(63) ロックレバー
(64) ロックピン(ロック部材)
(95) 施肥入力軸
(113) 入力ロッド(駆動ロッド)
(143) 筒軸(ジョイント部材)[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]
[Prior art]
Conventionally, as shown in Japanese Patent Laid-Open No. 5-276818, there has been a technique for attaching a mid-mount fertilizer to a traveling vehicle.
[0003]
[Problems to be solved by the invention]
In the prior art, when the fertilizer feeding case is fixed at a certain height, the work of taking out the fertilizer remaining in the fertilizer feeding case or the maintenance work becomes troublesome. Further, by providing the fertilizer feeding case so as to be movable up and down, the case can be raised and the residual fertilizer can be easily taken out. However, if a lock lever that fixes the case to the raised or lowered position is provided on the front side, the lock lever can be easily operated from the driver's seat side. There is a problem that it becomes uniform or the fertilizer transfer hose comes off.
[0004]
[Means for Solving the Problems]
However, the present invention A planting portion (15) is installed on the rear side of the traveling vehicle (1) via a link mechanism (27) so as to be movable up and down, and a fertilizer hopper (46) for containing fertilizer and a feeding case (47) for feeding the fertilizer ), A lifting frame (58) supporting the fertilizer hopper (46) and the feeding case (47), and a transport hose for transporting fertilizer to the fertilizer chute (48) of the float (34) of the planting part (15) The fertilizer applicator (36) provided with (49) is mounted on the rear part of the traveling vehicle (1), and the fertilizer hopper (46) via front and rear lifting rails (56, 56) provided on the left and right of the rear part of the traveling vehicle (1). Fertilization is performed by fixing the feeding case (47) at the lowered position of the lifting rail (56), while fertilization is performed by fixing the fertilizer hopper (46) and the feeding case (47) at the raised position of the lifting rail (56). Rice fields receiving residual fertilizer from hopper (46) In order to fix and support the fertilizer hopper (46) and the feeding case (47) in the lowered position and the raised position on the lifting rail (56) on the front side, the hook of the locking lever (63) on the lifting frame (58) side Engagement holes (65, 66) for engaging the arm (137) are provided, and the fertilizer hopper (46) and the feeding case (47) are fixedly supported at the lowered position on the rear lifting rail (56). , Provided with a lock member (64) that engages with the engagement hole (58a) on the lifting frame (58) side, The front side and the rear side of the fertilizer feeding case can be locked by the lock lever and the locking member, and the fertilizer feeding case can be easily prevented from vibrating back and forth during the work, the amount of fertilizer application becomes uneven or the fertilizer In addition to eliminating problems such as the transfer hose coming off, it is possible to easily improve the durability of the fertilizer feeding case lifting structure.
[0005]
[0006]
[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 lifting rail section, FIG. 2 is a side view of a riding rice transplanter, FIG. 3 is a plan view thereof, and (1) is a traveling vehicle on which an operator is boarded, and an engine (2) Is mounted on the front of the vehicle body frame (3), the front wheel (6) for paddy field traveling is supported via the front axle case (5) in front of the gear transmission case (4), and the gear transmission case (4) A rear axle case (7) is connected to the rear, and the rear axle case (7) supports the rear wheels (8) for paddy field travel. 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 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. A support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and travels via a link mechanism (27) including a top link (25) and a lower link (26). A support frame (24) is connected to the rear side of the vehicle (1), and an elevating cylinder (28) for raising and lowering the planting part (15) via the link mechanism (27) is connected to the lower link (26), At the same time as the front and rear wheels (6) and (8) are driven to move, the seedlings are taken out from the seedling mount (16) that slides back and forth to the left and right with the planting claws (17), and seedlings are planted continuously. Configure to do work.
[0009]
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 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 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 (3) behind the front axle case (5). 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 The rear axle case (7) for pivotally supporting the left and right rear wheels (8) and (8) via (39) is fixed to the lower surface of the rear end of the left and right body frames (3) and (3), and the engine (2) output is Each axle case (5 through the transmission case (38) (4) (7) is transmitted as driving force, and configured to drive the front and rear wheels (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 fertilizer hopper (46) for containing fertilizer, a fertilizer feeding case (47) for supplying fertilizer in a fixed amount, and a side fertilizer chute (48) for floats (34) and (35). A blower (50) for discharging fertilizer through a flexible conveying hose (49) and a cylindrical air tank (51) are provided in the fertilizer applicator (36), and a blower (50 at the right end of the air tank (51) is provided. ), And six sets of fertilizer feed cases (47) for six strips are arranged on the upper side of the air tank (51).
[0013]
Further, as shown in FIGS. 8, 9, 10, 11, and 12, left and right base frames (52) and (52) are attached to both sides of the horizontal frame (41) at the rear end of the vehicle body frame (3). Lay horizontally in the direction The left and right base frames (52) (52) The air tank (51) is bolted and fixed to the base frame (52) via brackets (54) and (54). A side stay (55) is connected between the rear end portion of the base frame (52) and the vehicle body frame (3) so as to be substantially horizontal. The front and rear elevating rails (56) are erected on the front and rear sides of the base frame (52) that is horizontally mounted on the base frame, and the four elevating rails (56) (56) (56) (56) Against A rear axle that attaches the fertilizer applicator (36) so that it can be raised and lowered, and attaches the fertilizer applicator (36) so that it can be raised and lowered by a pair of left and right gas springs (57) (57), and is disposed at the rear end of the vehicle body frame (3) The case (7) supports the weight of the fertilizer applicator (36). As shown in FIG. 13, a bearing plate (58) is provided to face the front and rear elevating rails (56) and (56), and the rail (56) is provided. A bearing roller (59) that is rotatably fitted is rotatably supported on the bearing plate (58), and two sets of two front and rear rails (56) and (56) are provided symmetrically. 56) two upper and lower rollers (59) and (59) are attached to the base frame, and a pair of left and right bearing plates (58) and (58) are attached to the base frame by four rails (56) and eight rollers (59). (52) Let it be raised and lowered freely There.
[0014]
Further, the lower end of the gas spring (57) is connected to the vehicle body frame (3), the upper end of the gas spring (57) is connected to the bearing plate (58), and the rail (56) and the gas spring (57) are connected. The gas spring (57) is connected to the center of gravity of the fertilizer applicator (36) in the front-rear width direction, and the stretching force is approximately equal to or slightly smaller than the weight of the fertilizer applicator (36). The spring (57) is configured to have.
[0015]
Further, as shown in FIGS. 12, 14, 15, and 16, the left and right bearing plates (58) and (58) are integrally fixed by a round pipe-shaped front frame (60), and the fertilizer applicator (36) is lifted. A handle (61) that is sometimes gripped by an operator is welded and fixed to the front frame (60), and left and right lock levers (63) are attached to the left and right bearing plates (58) and (58) via support shafts (62) and (62). ) (63) is rotatably supported, and the front portions of the left and right bearing plates (58) (58) are locked to the front left and right lifting rails (56) (56) via the left and right lock levers (63) (63). At the same time, left and right lock pins (64) and (64) are slidably attached to the left and right lifting rails (56) and (56) on the rear side, and locked to the engagement holes (58a) of the bearing plate (58) shown in FIG. The pin (64) is detachably engaged, and the left and right lifting rails ( 6) The rear portions of the left and right bearing plates (56) and (56) are locked to the front and rear of the bearing plates (56) via the left and right lock pins (64) and (64). ) (56) is fixed by a lock lever (63) and a lock pin (64). In addition, Front side Upper and lower engaging holes (65) (66) are formed in the elevating rail (56), and a lock lever (63) is engaged with each engaging hole (65) (66) to move the fertilizer applicator (36) to the raised position or The lock lever (63) extends below the handle (61), and the operator grips the handle (61) protruding from the driver's seat (13) and locks it. By operating the lever (63), the lock lever (63) can be detached from the engagement holes (65) (66).
[0016]
Further, the case front bracket (67) is fixed by welding to the front frame (60), and the front side of the feeding case (47) is fixed to the front case bracket (67) by bolting. Are provided between the left and right lifting rails (56) and (56), and two feeding cases (47) and (47) are provided on the outside of the lifting rails (56) and (56). ) Are arranged, and three units of feeding cases (47)...
[0017]
Further, as shown in FIGS. 17, 18, and 19, the lower outlet (69) of the hopper (46) is fitted into the intake port (68) on the upper surface front side of the feeding case (47), and the feeding case (47) An outlet (70) is formed on the lower front side, and the outlet (70) is closed by a detachable cap (71). The cap (71) is removed, the outlet (70) is opened, and the fertilizer in the tank (46) is allowed to flow downward on the front side. At this time, the fertilizer applicator (36) is moved up to the lift rail (56). The container between the take-out port (70) and the lower air tank (51) is enlarged, and the container for fertilizer can be easily inserted under the take-out port (70), so that the remaining fertilizer can be easily taken out. It is configured to do so.
[0018]
Further, the bottom cover (73) is detachably fixed to the lower surface of the feeding case (47) via the closing lever (72), and the outlet (74) is formed on the lower surface of the hard synthetic resin bottom cover (73). A soft synthetic resin joint pipe (75) for fitting the front end portion to the air tank (51) is provided, and the front end of the hard synthetic resin joint (76) is detachable at the rear end of the pipe (75). At the same time, the transfer hose (49) is fitted to the rear end of the joint (76), and the air blown from the blower (50) is blown out from the air tank (51) to each pipe (75)... And the hose (49). The fertilizer that falls from the outlet (74) of the bottom lid (73) to the middle of the joint (76) is moved to the conveying hose (49), and the inlet (77) is inserted into the middle of the joint (76) forming the T-shaped flange. , The fitting cap (78) is fixed to the outlet (74) of the bottom lid (73), the cap (78) is detachably fitted to the inlet (77), and the outlet (74 ) Is connected to the inlet (77), the mounting plate (79) is integrally fixed to the air tank (51), and the joint (76) is fixed to the mounting plate (79) with bolts.
[0019]
Further, an inlet plate (82) having an intake port (80) and a blower outlet (81), a feeding plate (84) having a plurality of substantially rectangular outlets (83) on the same circumference, and a discharge port ( 85), and each plate (82) (84) (86) made of a substantially circular flat plate is arranged in a multilayer between the feeding case (47) and the bottom cover (73). At the same time, the feeding shaft (87) is pivotally supported in the feeding case (47) so as to be substantially vertically rotatable, and the lower end side of the feeding shaft (87) is passed through the center of each plate (82) (84) (86). The rubber ring (88) is detachably locked to the lower end of the feeding shaft (87), the plates (82), (84), and (86) are supported on the feeding shaft (87) so as to be able to be pulled out downward, and a closing lever ( 72), each plate (82) (84) (86) is pressed between the feeding case (47) and the bottom cover (73). The inlet plate (82) and the outlet plate (86) are locked to the feeding case (47), and the feeding shaft (87) is rotated with respect to each plate (82) (86), and the feeding plate (84) is The feed shaft (87) is engaged with the feed shaft (87), the feed plate (84) is forcibly rotated by the feed shaft (87), and the fertilizer that has entered the feed port (83) from the intake port (80) is discharged into the discharge port (85 ) And dropped in the direction of the exit (74).
[0020]
In addition, the brush (89) is provided through a photograph (90) that is provided with a brush (89) that removes excess fertilizer on the upper surface of the feed outlet (83) at the end of the intake (80) and adjusts the height (90). It is attached to (47) so that the height can be adjusted, and the height of the lower end of the brush (89) with respect to the upper surface of the feeding plate (84) is adjusted from the outside of the feeding case (47) to adjust the fertilizer delivery amount of the feeding outlet (83). It is configured.
[0021]
Further, a compressed air intake (91) that faces the air outlet (81) of the inlet plate (82) is formed in the feeding case (47), and the hollow portion of the air tank (51) and the compressed air intake (91) are formed. ) Are communicated by the diversion pipe (92), and the air blown from the blower (50) and the air tank (51) is supplied to the blowout port (81) through the pipe (92) and the intake port (91). 85) Air is blown from the outlet (81) to the outlet (83) moved to the position, and the fertilizer of the outlet (83) is forcibly dropped downward by the ventilation, and the granular fertilizer or this powder is supplied to the outlet. (83) It is configured to prevent it from remaining in.
[0022]
Further, as shown in FIGS. 11 and 16, the PTO shaft (93) for transmitting the output of the engine (2) to the planting part (15) extends rearward from the gear transmission case (4) and the left The bearing cylinder (94) is welded and fixed to the support column (40), and the fertilization input shaft (95) of the bearing cylinder (94) is interlocked and connected to the middle of the PTO shaft (93) via the chain (96). A crank plate (97) is detachably fixed to the rear end portion of the fertilization input shaft (95) by a ball lock structure. The bearing plate (58) and the rear case bracket (98) are integrally provided with a square pipe-shaped rear frame (99). The rear frame (99) is substantially parallel to the air tank (51) and the front frame (60). Horizontally, the rear side of the feeding case (47) is fixed to the rear bracket (98) with bolts.
[0023]
The left bearing plate (58) is pivotally supported by a feed amount adjusting lever (102) via a bracket (100) and a shaft (101), and the left bearing plate (58) is pivotally supported by a support shaft (103). The adjustment link (104) and the fulcrum link (105) are provided, the adjustment link (104) is connected to the screw portion (106) of the lever (102), and the adjustment fulcrum (107) is attached to the fulcrum link (105). The drive arm (108) is pivotally supported on the fulcrum (107). Then, by rotating the screw portion (106) by rotating the lever (102) that protrudes in the direction of the driver's seat (13), the links (104) (105) rotate integrally, and the adjustment fulcrum (107) The position is changed, and an operator of the driver's seat (13) can perform a feed amount adjustment operation of the lever (102).
[0024]
Further, a feeding drive shaft (110) is rotatably supported on the rear frame (99) via a bearing plate (109), and a swing arm (111) is fixed to the drive shaft (110) to thereby drive the drive. One end of the telescopic rod (112) whose length is adjustable is connected to the arm (108), the other end of the telescopic rod (112) is connected to the swing arm (111), and the crank plate (97 ) To the drive arm (108) via the input rod (113), and the feeding drive shaft (110) from the PTO shaft (93) for planting drive via the drive arm (108) and the input rod (113). The driving force is transmitted to the plant, and the planting part (15) and the fertilizer applicator (36) are simultaneously operated and stopped by turning on and off a planting clutch (not shown), and the crank plate is applied to the fertilizer input shaft (95). (9 ) To remove the drive unit and lift the ascending portion of the fertilizer applicator (36). The lever (102) is operated to change the position of the adjustment fulcrum (107), and the telescopic rod (112) is reciprocated. The stroke is changed steplessly and the fertilizer feed amount is continuously adjusted.
[0025]
Further, as shown in FIG. 10, a clutch shaft (116) is pivotally supported on the rear frame (99) via a one-way clutch (114) for preventing rotation, and the one-way clutch (117) is supported on the clutch shaft (116). And an oscillating link (119) is fixed to the feeding drive shaft (109), and the link (119) is connected to the input link (118) via a connecting rod (120). The clutch shaft (116) is intermittently rotated in one direction by swinging the input link (118).
[0026]
Further, the fastening clutch case (121) is fixed to the feeding case (47), and the input shaft (124) is always connected to the upper end side of the feeding shaft (87) via bevel gears (122) (123). In the clutch case (121), a latching clutch (not shown) for connecting the input shaft (124) to the clutch shaft (116) is connected to the clutch shaft (116). The clutch lever (126) and the clutch arm (127) for performing the on / off operation are distributed to the front and rear of the clutch case (121), and are provided on the rear rear part of the seedling stand (16) of the planting part (15). Via a stopper wire (130) that is stretched by the outer receiver (129) of the rear frame (98) to the planting stopper unit clutch lever (128). Wherein linking the clutch arm (127). And when any of the planting claws (17) for 6-row planting is stopped by the operation of the planting-stitching unit clutch lever (128), the case corresponding to the planting claw (17) stopped. (121) The suspension clutch of (121) is disengaged to stop the fertilization operation, and the fertilization is performed only on the strip where the seedlings are planted by the planting claws (17), for example, the left and center four seedlings are planted When the fertilizer is applied from the four feeding cases (47) of the left side and the center, and the clutch lever (126) is operated by the operator to cut the hooking clutch of the case (121), Any one or all of the feeding cases (47) are arbitrarily selected and fertilization can be stopped regardless of seedling planting.
[0027]
Further, as shown in FIGS. 8, 9, 10, and 12, the lower ends of the left and right support legs (131) (131) are fixed to the upper ends of the front left and right lifting rails (56) (56), and the left and right support legs (131 ) (131) Both sides of the pipe frame (132) between the upper ends are fixed, and the pipe frame (132) is placed horizontally on the front side of the fertilizer hoppers (46) (46) for the two central strips. ) And the left and right lifting rails (56) and (56) are reinforced, and a replenishing fertilizer bag (134) is placed on the rear center cover of the driver's seat (13) as shown in FIG. When this happens, the forward tilt of the fertilizer bag (134) is prevented by the driver's seat (13), and the upper pipe frame (132) and the lower handle (61) extended substantially in parallel to the left and right of the fertilizer bag (134). Prevent backward tilting. Further, the middle part of the round bar-shaped hose guide body (133) is extended below the transport hoses (49) and (49) for two strips of one unit, and both ends of the hose guide body (133) are transported hoses (49). Bend upward and fix to the side of the mounting plate (79) (79), and the hose guide body (133) limits the downward and left-right bending of the transport hose (49) near the joint (76) connection. The conveying hose (49) connecting end is extended and supported in the joint (76) extending direction, and the hose (49) connecting end is prevented from being detached from the joint (76) by bending of the conveying hose (49). Yes.
[0028]
Further, as shown in FIGS. 13, 14, and 15, the left and right bearing plates (58) are attached to the front frame (60) and the rear frame (99) outside the attachment position of the fertilizer feed case (47) (47) for the two central strips. ) (58) are welded and fixed, and both ends of the front frame (60) and the rear frame (99) are integrally fixed by the left and right side frames (135) (135), and the fertilizer feeding case (47) ) (47) is attached to the front frame (60) and the rear frame (99) between the bearing plate (58) and the side frame (135), and each of the square frames (60), (99), (135) is attached. The bearing plate (58) is divided into three equal parts in the left-right direction, and the fertilizer feeding case (47) for six strips is spanned and supported between the front and rear frames (60) (99).
[0029]
Further, as shown in FIGS. 1, 20, and 21, a hook arm (137) that is engaged and held by a spring (136) in an engagement hole (65) (66) of the elevating rail (56) is attached to the support shaft (65). 62), the hook arm (137) is integrally fixed to the lock lever (63) via the support shaft (62), and the lock lever (63) is rotated upward to resist the spring (136). The hook arm (137) is configured to be extracted from the engagement holes (65) (66). The lock pin (64) is slidably attached to the reinforcing frame (138) on the back surface of the rear lifting rail (56) via the guide frame (139), and the bearing plate (58) The release lever (141) is provided with a spring (140) for engaging and holding the lock pin (64) in the engagement hole (58a) and a release lever (141) integrally fixed to the lock pin (64) and protruding backward. Is engaged with the notch (142) of the guide frame (139) so that the lock pin (64) is removed from the engagement hole (58a) against the spring (140).
[0030]
Then, the hook arm (137) is engaged with the lower engagement hole (66), and the front portion of the bearing plate (58) on the front side of the fertilizer feeding case (47) is connected to the lock lever (63) and the hook arm (137). To the front elevating rail (56), and the rear portion of the fertilizer feed case (47) rear bearing plate (58) to the rear elevating rail (56) via the lock pin (64). The fertilizer feeding case (47) is fixed at the lowered position, and the fertilization work is performed in parallel with the rice transplanting work, and the hook arm (137) is engaged with the upper engagement hole (65). 137) is used to lock the front portion of the bearing plate (58) to the front elevating rail (56), the fertilizer feeding case (47) is fixed in the raised position, and remains in the fertilizer feeding case (47). Remove the fertilizer from the outlet (70) Residual fertilizer taken out are working or configured to perform maintenance work for releasing decomposed and bottom cover (73) removed by feeding plate (84).
[0031]
As is clear from the above, a fertilizer hopper (46) for containing fertilizer, a multi-fertilizer feed case (47) for feeding the fertilizer of the hopper (46), and a fertilizer feed section of the case (47) An air tank (51) for supplying the fertilizer, and a lift rail (56) for mounting the fertilizer feeding case (47) so as to be movable up and down, and a lift rail (56) on the front side of the fertilizer feeding case (47). A lock lever (63) to be stopped, and a lock pin (64) which is a rear lock member for locking the case (47) to the lifting rail (56) on the rear side of the fertilizer feeding case (47), The front side and the rear side of the feeding case (47) are locked by the lock lever (62) and the lock pin (64) to prevent the fertilizer feeding case (47) from vibrating back and forth during the operation, and the fertilizer feeding. Bearing plates (58) and (58) which are left and right lifting frames for attaching the case (47) to the lifting rail (56) so as to be movable up and down, and handles (61) which are lift frames connected between the left and right bearing plates (58) and (58). ) And a lock lever (63) to be attached to the bearing plate (58) are arranged close to the range where the operator can grasp them simultaneously by hand, and the connection of the left and right bearing plates (58) is reinforced by the handle (61). Thus, the mounting strength of the left and right bearing plates (58) is improved, and the lifting and lowering operation of the bearing plates (58) can be easily performed by simultaneously grasping the handle (61) and the lock lever (63). An operator in a backward-facing posture from the side lifts and lowers the left and right lock levers (63) and the handle (61) with both hands, so that the fertilizer hopper (46) and the fertilizer feeding case (47) are raised and lowered. It is configured.
[0032]
Further, as shown in FIGS. 16 and 22, the cylinder shaft (143) is welded and fixed to the crank plate (97), and the rear end of the fertilization input shaft (95) that is pivotally supported via the bearing (144) is connected to the cylinder shaft. A lock ball (145) that fits into the inner hole of (143) and is elastically engaged with the fertilizer input shaft (95) is provided on the tube shaft (143), and the tube shaft (143) is locked to the fertilizer input shaft (95). An engagement shaft is removably supported via the ball (145), the cylindrical shaft (143) is detached from the fertilizer input shaft (95) without a tool, and the lock pin (64) is engaged as described above. When releasing, the cylinder shaft (143) is removed from the fertilizer application input shaft (95), and the fertilizer feeding case (47) is raised by holding the handle (61) and the lock lever (63), while the fertilizer feeding case (47) is removed. Lock pin (64) when lowered A drive rod that engages and attaches the cylinder shaft (143) to the fertilizer input shaft (95) to drive the fertilizer, and transmits the fertilizer driving force to the fertilizer feeding case (47) that is mounted so as to be movable up and down. An input rod (113) is provided, and the input rod (113) is connected to a fertilizer input shaft (95) on the machine side via a cylindrical shaft (143) which is a detachable joint member. ) Is attached and detached without a tool, so that the fertilizer input shaft (95) can be separated without leaving any parts on the input rod (113) side, and the fertilizer feed case (47) can be moved up and down before the input rod (113). Even if the fertilizer input shaft (95) is rotated idly even if the fertilizer input shaft (95) is erroneously operated in a state where the fertilizer input is separated, it is configured to eliminate problems such as component breakage due to idling of the fertilizer input shaft (95).
[0033]
【The invention's effect】
As apparent from the above examples, the present invention A planting portion (15) is installed on the rear side of the traveling vehicle (1) via a link mechanism (27) so as to be movable up and down, and a fertilizer hopper (46) for containing fertilizer and a feeding case (47) for feeding the fertilizer ), A lifting frame (58) supporting the fertilizer hopper (46) and the feeding case (47), and a transport hose for transporting fertilizer to the fertilizer chute (48) of the float (34) of the planting part (15) The fertilizer applicator (36) provided with (49) is mounted on the rear part of the traveling vehicle (1), and the fertilizer hopper (46) via front and rear lifting rails (56, 56) provided on the left and right of the rear part of the traveling vehicle (1). Fertilization is performed by fixing the feeding case (47) at the lowered position of the lifting rail (56), while fertilization is performed by fixing the fertilizer hopper (46) and the feeding case (47) at the raised position of the lifting rail (56). Rice fields receiving residual fertilizer from hopper (46) In order to fix and support the fertilizer hopper (46) and the feeding case (47) in the lowered position and the raised position on the lifting rail (56) on the front side, the hook of the locking lever (63) on the lifting frame (58) side Engagement holes (65, 66) for engaging the arm (137) are provided, and the fertilizer hopper (46) and the feeding case (47) are fixedly supported at the lowered position on the rear lifting rail (56). , Provided with a lock member (64) that engages with the engagement hole (58a) on the lifting frame (58) side, The front side and the rear side of the fertilizer feeding case (47) can be locked by the lock lever (62) and the locking member (64), and it is easy for the fertilizer feeding case (47) to vibrate back and forth during the operation. It is possible to prevent problems such as non-uniform fertilization amount and removal of the fertilizer transport hose (49), and easily improve the durability of the lifting structure of the fertilizer feed case (47). Is.
[0034]
[0035]
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a lifting rail part.
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 plan view of a fertilizer applicator unit.
FIG. 7 is a rear view of the same.
FIG. 8 is a side view of a lifting rail part.
FIG. 9 is a side view of a fertilizer feeding case portion.
FIG. 10 is a plan view of a fertilizer feeding case portion.
FIG. 11 shows the base frame portion. Rear view .
FIG. 12 is a rear view of a fertilizer feeding case part.
FIG. 13 is a side view of a bearing plate portion.
FIG. 14 is a plan view of a handle part.
FIG. 15 is a rear view of the same.
FIG. 16 is a side view of the same.
FIG. 17 is a sectional side view of a fertilizer feeding case.
FIG. 18 is a rear view of the same cross section.
FIG. 19 is a plan view of the same section.
FIG. 20 is a rear view of the lock lever portion.
FIG. 21 is a rear view of the lock pin portion.
FIG. 22 is an explanatory side view of a fertilizer input shaft portion.
[Explanation of symbols]
(46) Fertilizer hopper
(47) Fertilizer feeding case
(56) Lift rail
(58) Bearing plate (elevating frame)
(61) Handle (lift frame)
(63) Lock lever
(64) Lock pin (lock member)
(95) Fertilizer input shaft
(113) Input rod (drive rod)
(143) Tube shaft (joint member)